JP2025098196A - Tire binding device and vehicle carrier equipped with tire binding device - Google Patents

Abstract

[Problem] To provide a tire lashing device and vehicle transporter that can suppress weight increase without reducing the degree of freedom in lashing down a tire. [Solution] A plurality of fixing holes are formed in the area of the floor plate where the tire is placed, arranged in a direction parallel to the tire width direction and a direction perpendicular to the width direction. A pair of fixing jigs are attached to each of the two fixing holes spaced apart in the direction perpendicular to the width direction and fix the tire together with the lashing belt. Each of the fixing jigs is provided with a structure for attaching the lashing belt at multiple positions along the tire width direction. A reinforcing member is attached to the back surface of the floor plate near the fixing holes, shaped to enable the portion of the floor plate where the fixing holes are formed to withstand the force acting on the floor plate when lashing down a tire. [Selected Figure] Figure 5

Description

The present invention relates to a tire fastening device for fastening tires of a vehicle to a floor plate, and a vehicle transporter equipped with the tire fastening device.

Many passenger cars these days have no towing hooks located on the underside of the chassis frame, and instead have screw-in towing hooks installed in the bumper. This means that, for example, it is impossible to use the towing hook for fastening when transporting the car on a vehicle carrier. Some vehicle carriers are also designed without fastening holes in the chassis frame. For this reason, Patent Document 1, for example, discloses a tire fastening device that can be used for a wide variety of vehicles, which fastens the tires of a vehicle loaded on a vehicle carrier to the floor plate of the loading platform.

The tire securing device disclosed in Patent Document 1 has multiple slits formed in the floor plate at intervals along the length of the vehicle to be loaded, and a round bar that is placed on the underside of the floor plate and extends along the multiple slits. In addition, it has a securing belt that is wrapped around the outer periphery of the tire of the vehicle to be loaded, two hooks provided on the securing belt, and a fastener that tightens the securing belt. The multiple slits are open along the left-right direction of the vehicle to be loaded.

In the tire securing device disclosed in Patent Document 1, two hooks are selectively passed through one of multiple slits at a position that clamps the tire to be secured from the front and rear, and the tips of the hooks are engaged with a round bar. Then, by tightening the securing belt using a fastener, it is possible to fasten and secure the tire to the loading platform.

JP 2005-153814 A

However, the tire fastening device disclosed in Patent Document 1 has many slits in the floor plate in order to be applicable to a wide variety of vehicles with different wheelbases and tire sizes, which reduces the strength of the floor plate. Therefore, it is necessary to increase the strength of the floor plate by adding a structure to reinforce the floor plate, but adding a structure to reinforce the floor plate may cause a problem of increasing the weight of the cargo bed.
In consideration of the above-mentioned problems, the present invention aims to provide a tire fastening device and a vehicle transporter equipped with a tire fastening device that can suppress weight increase without reducing the freedom of positioning for fastening tires.

A tire tyre fastening device according to one aspect of the present invention is a tire fastening device for fastening a tire to a floor plate using fasteners, the tire fastening device having a plurality of fastening holes arranged in a direction along the width direction of the tire and a direction along a direction perpendicular to the width direction in an area of the floor plate where the tire is placed, and a pair of fastening jigs attached to each of the two fastening holes arranged at a distance in the direction perpendicular to the width direction and fastening the tire together with the fastening belt, each of which is provided with a structure for attaching the fastening belt at a plurality of positions along the width direction of the tire. In addition, a reinforcing member is attached to the rear surface of the floor plate near the fastening holes, which is formed in a shape that allows the portion of the floor plate where the fastening holes are formed to exhibit a force that can withstand the force acting on the floor plate when the tire is fastened. Furthermore, the fastening jig has a structure for attaching the lashing belt on its front side, and a jig main body on its back side that faces the surface of the floor plate on which the tire is placed when the fastening jig is attached to the fixing hole, and a jig hook portion that faces the surface of the floor plate opposite the surface that faces the jig main body when the fastening jig is attached to the fixing hole. Then, with the fastening jig attached to the fixing hole, the floor plate and the reinforcing member are disposed between the jig main body and the jig hook portion.
A tire tying device according to one aspect of the present invention is a tire tying device for tying a tire to be tyed to a floor plate using a fastening device, and includes a plurality of fastening holes, a pair of fastening jigs, and a fastening belt. The plurality of fastening holes are formed in the floor plate, are arranged in an area of the floor plate where the tire is placed, and are arranged in a direction along the width direction of the tire and a direction along a direction perpendicular to the width direction of the tire. The fastening belt can be attached to the fastening holes, and one end of the fastening belt is connected to one of the pair of fastening jigs, and the other end of the fastening belt is connected to the fastening device via the other of the pair of fastening jigs with a part between both ends in contact with the outer circumferential surface of the tire. Furthermore, the fastening belt includes a first hook attached to one end of the fastening belt, and a second hook attached to the fastening belt so as to be movable between both ends along the length direction of the fastening belt. The fastening jig is formed with a plurality of hook insertion holes into which the first hook and the second hook can be attached. The hook insertion holes are arranged along the width direction of the tire when the fastening jig is attached to the fixing holes. In addition, a reinforcing member is attached to the rear surface of the floor plate near the fixing holes, the reinforcing member being shaped to withstand the force acting on the floor plate when the tire is fastened. The fastening jig has a jig main body portion on the front side of which the hook insertion holes are formed, and a back side of the fastening jig facing the surface of the floor plate on which the tire is placed when the fastening jig is attached to the fixing holes, and a jig hook portion facing the surface of the floor plate opposite the surface facing the jig main body portion when the fastening jig is attached to the fixing holes. Then, when the fastening jig is attached to the fixing holes, the floor plate and the reinforcing member are disposed between the jig main body portion and the jig hook portion.
A vehicle transporter according to another aspect of the present invention includes a tire fastening device.

The tire securing device and vehicle transporter of the present invention make it possible to suppress weight increase without reducing the degree of freedom of the position where the tire is secured.

1 is a side view of a vehicle transporter equipped with a tire fastening device according to an embodiment. FIG. 2 is a view taken along line II in FIG. 1 . FIG. 3 is a view taken along line III in FIG. 2 . FIG. FIG. 2 is a perspective view showing a state in which the tire is fastened. FIG. 4 is a perspective view showing a state in which a fastening jig is not attached to a fixing hole. FIG. 4 is a perspective view showing a state in which a fastening jig is attached to a fixing hole. FIG. IX-IX line cross-sectional view of FIG. 8(b). FIG. 4 is a diagram showing the configuration of a front fastening belt. 13A and 13B are diagrams showing the configuration of a front first hook. FIG. 4 is a diagram showing the configuration of a rear fastening belt. FIG. 2 is a perspective view showing a configuration of a jig bracket. FIG. 14 is a view taken along line XIV in FIG. 13 . FIG. 2 is a perspective view showing a state in which a fastening jig is attached to a jig bracket. FIG. 16 is a view taken along line XVI in FIG. 15 . 13A and 13B are diagrams showing the configuration of a modified example, and are diagrams showing the configuration of a jig bracket. FIG. 13 is a diagram showing the configuration of a modified example, illustrating a state in which a fastening jig is attached to a jig bracket. This is a cross-sectional view of line ZZ in Figure 18.

The following describes an embodiment of a tire fastening device and a vehicle transporter equipped with a tire fastening device according to the present invention, with appropriate reference to the drawings. Note that the drawings are schematic. Therefore, it should be noted that the relationship and ratio between thickness and planar dimensions may differ from the actual ones, and the drawings may contain parts with different dimensional relationships and ratios. In addition, the embodiments shown below are examples of devices and methods for embodying the technical idea of the present invention, and the technical idea of the present invention does not specify the materials, shapes, structures, arrangements, etc. of the components to the embodiments described below.

<Embodiment>
(composition)
As shown in Figures 1 to 5, the vehicle transporter 1 comprises a chassis frame 2, a cargo bed 3, a rear gate 4, a torii frame 5, a waist board 6, a cargo bed lifting device 8, a front tire fastening device 20, and a rear tire fastening device 30.
In the following description and drawings, the direction in which the vehicle transporter 1 moves forward (the direction in which the vehicle transporter 1 travels with the shift selected in the D range or the like) may be referred to as "forward". Similarly, in the following description and drawings, the direction in which the vehicle transporter 1 moves backward (the direction in which the vehicle transporter 1 travels with the shift selected in the R range) may be referred to as "rear". In the following description and drawings, the "left side" refers to the left side of the driver driving the vehicle transporter 1, and the "right side" refers to the right side of the driver driving the vehicle transporter 1. Therefore, in the following description and drawings, the "left side view" refers to the viewpoint of the driver driving the vehicle transporter 1 as seen from the left side, and the "right side view" refers to the viewpoint of the driver driving the vehicle transporter 1 as seen from the right side. In the following description, the "left side view" and the "right side view" may be collectively referred to as "side view".

The loading platform 3 is disposed on the chassis frame 2 and includes a floor plate 3f and a fastening ring 11.
The floor plate 3 f is a plate for fastening the tires (front tires Tf and rear tires Tr) of the loaded vehicle V, which is a vehicle to be loaded onto the vehicle transporter 1 .
The fastening ring 11 is formed in a ring shape and is disposed at the rear of the cargo bed 3, specifically, between the position on the floor plate 3f where the rear tire Tr is positioned when fastening the rear tire Tr, and the rear tailgate 4.

In addition, a towing device (not shown) is attached to the cargo bed 3.
The towing device is equipped with a winch around which a wire is wound and a hook connected to the tip of the wire, and by operating the winch with the hook connected to the loaded vehicle V, it is possible to tow the loaded vehicle V onto the loading platform 3.

The rear gate 4 is disposed at the rear end of the loading platform 3. The rear gate 4 is attached to the loading platform 3 so that it can rotate forward and backward around the rear end of the loading platform 3 as the center of rotation. By rotating the rear gate 4, it is possible to move the rear gate 4 to a vertical closed position shown in FIG. 1 or to an open position (not shown). The "open position" is a position where the rear gate 4 acts as a slope when the loaded vehicle V enters the loading platform 3.

The torii frame 5 is formed in a gate shape when viewed from the rear, and both ends are attached to the front part of the loading platform 3, so that it is integral with the loading platform 3 at the front part of the loading platform 3.
The wainscot 6 is formed in a rectangular plate shape and is provided integrally with both ends of the torii frame 5 and the frame of the loading platform 3. The wainscot 6 can be replaced by removing the bolts.

In addition, two jig brackets 9 are attached to the rear-facing surface of the wainscot 6 by welding or the like.
Furthermore, a mirror panel 7 is attached to the rear-facing surface of the wainscot 6.
The two jig brackets 9 are each disposed at a position on the wainscot 6 closer to the center of the bed 3 than the position where the tires of the loaded vehicle V are disposed, when viewed from the rear.

A front fastening jig 60f provided for the front tire fastening device 20 and a rear fastening jig 60r provided for the rear tire fastening device 30 can be attached to the jig bracket 9. The detailed configuration of the jig bracket 9 will be described later.
The mirror plate 7 is formed using a mirror, and is capable of reflecting the loaded vehicle V placed on the loading platform 3. This allows, for example, a driver of the loaded vehicle V to visually confirm the left end and right end of the loaded vehicle V reflected in the mirror plate 7. This makes it easy to move the loaded vehicle V to a desired position on the loading platform 3.

The bed lifting device 8 is disposed between the bed 3 and the chassis frame 2. The bed lifting device 8 also includes a movement mechanism (not shown) for moving the bed 3.
The movement mechanism is capable of changing the position of the loading platform 3 between a storage position and a boarding position. In addition, the movement mechanism is configured to be capable of changing the position of the loading platform 3 between the storage position and the boarding position by sliding the loading platform 3.
The storage position is a position where the loading platform 3 is stored on the chassis frame 2. The boarding position is a position where the loading platform 3 is lowered from the storage position to the rear of the vehicle transporter 1. In this way, the vehicle transporter 1 can load the loaded vehicle V onto the loading platform 3 with the position of the loading platform 3 as the boarding position, and transport the loaded vehicle V with the position of the loading platform 3 as the storage position.

The front tire fastening device 20 is a device for fastening the front tire Tf of the loaded vehicle V to be fastened to the floor plate 3f using a fastener (front fastener 27). The front tire fastening device 20 is a device for fastening the front tire Tf regardless of whether the loaded vehicle V has a towing hook or not.
Further, the front tire fastening devices 20 are respectively arranged for the right front tire Tf and the left front tire Tf. The front tire fastening device 20 arranged on the right side and the front tire fastening device 20 arranged on the left side are arranged symmetrically on the floor plate 3f with respect to the center line CL of the loading platform 3. Since the front tire fastening devices 20 have a symmetrical configuration, the following description will be given without distinguishing between left and right.

The rear tire fastening device 30 is a device for fastening the rear tire Tr of the loaded vehicle V to be fastened to the floor plate 3f using a fastener (rear fastener 31). The rear tire fastening device 30 is a device for fastening the rear tire Tr regardless of whether the loaded vehicle V has a towing hook or not.
Further, the rear tire fastening devices 30 are respectively arranged for the right rear tire Tr and the left rear tire Tr. The rear tire fastening device 30 arranged on the right side and the rear tire fastening device 30 arranged on the left side are arranged symmetrically on the floor plate 3f with respect to the center line CL of the loading platform 3. Since the rear tire fastening devices 30 have a symmetrical configuration, the following description will be given without distinguishing between left and right.

<Cargo bed>
The detailed configuration of the loading platform 3 will be described below.

The floor panel 3f is formed in a rectangular shape as shown in Fig. 2. For the sake of explanation, the chassis frame 2, the rear gate 4, the torii frame 5, the wainscoting 6, the bed lifting device 8, and the loaded vehicle V are not shown in Fig. 2.
A loading vehicle V such as a passenger car can be placed on the floor plate 3f.
In addition, the floor board 3f is reinforced by a plurality of cross frames 10 fixed to the rear surface 3r of the floor board 3f.

The multiple cross frames 10 are arranged at intervals along the traveling direction of the vehicle transporter 1.
A towing device 21 is disposed on the front right side of the floor plate 3f. The towing device 21 can be used after the loading platform 3 is moved to the boarding position to tow the loaded vehicle V onto the loading platform 3.

As shown in FIG. 2, a front fastener 27 is attached to the loading platform 3.
The front fasteners 27 are fastening means for fastening and fixing the front tires Tf to the cargo bed 3, and are arranged on the left and right sides forward of the center of the cargo bed 3.
The front tightening device 27 also includes a handle 27h, a ratchet mechanism 27t, a wire 27r, a plurality of pulleys 27s, and a hook 27f.

The ratchet mechanism 27t includes a drum (not shown). The drum operates in conjunction with an operation of an operator (such as a driver) rotating the handle 27h.
The wire 27r is wound around a drum from its base end.

The multiple pulleys 27s rotate to guide the middle portion of the wire 27r (the portion between the tip and base ends).
The hook 27f is attached to the tip of the wire 27r.

<Front tire securing device>
As shown in FIG. 3, the front tire fastening device 20 includes a tire stopper block 23, a plurality of front fixing holes 70f, a pair of front fastening jigs 60f, and a front fastening belt 22.

(Tire stopper block)
The tire stopper block 23 is fixed between the position of the floor plate 3f where the front tire Tf is placed and the front fastener 27. As shown in Fig. 3, the tire stopper block 23 is formed in a trapezoid whose bottom side is longer than its top side in a side view. The bottom side of the tire stopper block 23 in a side view is in contact with the floor plate 3f. The tire stopper block 23 is placed on the floor plate 3f at a position according to the front/rear position of the axle and the size (diameter) of the front tire Tf.

(Front fixing hole)
The front fixing holes 70f are formed in the floor plate 3f and are rectangular holes penetrating the floor plate 3f.
In the embodiment, as an example, a case will be described in which 35 front fixing holes 70f are formed for one front tire Tf.
The 35 front fixing holes 70f are arranged in three groups, spaced apart along the direction in which the vehicle transporter 1 travels.

The front group of the three groups is composed of eleven front fixing holes 70f, and is formed by a set of four rows arranged along the direction in which the vehicle transporter 1 travels. The set of four rows arranged at the front end of the set of four rows has two front fixing holes 70f. One of the two front fixing holes 70f is formed at a position near the center in the width direction of the front tire Tf. The other of the two front fixing holes 70f is formed at a position closer to the center line CL than one of the two front fixing holes 70f. The set of three rows, which is different from the set of three rows arranged at the front end, has three front fixing holes 70f. One of the three front fixing holes 70f is formed at a position near the center in the width direction of the front tire Tf. The remaining two of the three front fixing holes 70f are formed at a position closer to the center line CL and farther from the center line CL than one of the three front fixing holes 70f.

Of the three groups, the rear group is composed of 12 front fixing holes 70f, and is formed of a set of four rows arranged along the direction in which the vehicle transporter 1 travels. Each set of four rows has three front fixing holes 70f. One of the three front fixing holes 70f is formed at a position near the center in the width direction of the front tire Tf. The remaining two of the three front fixing holes 70f are formed at positions closer to the center line CL and farther from the center line CL than one of the three front fixing holes 70f, respectively.
Of the three groups, the group disposed between the front group and the rear group has a configuration similar to that of the rear group.

Therefore, the multiple front fixing holes 70f are arranged in an area of the floor plate 3f where the front tires Tf are arranged.
The multiple front fixing holes 70f are arranged in a direction along the width direction of the front tire Tf and in a direction perpendicular to the width direction of the front tire Tf.

In the embodiment, the floor plate 3f has a plurality of (35) front fixing holes 70f formed therein, so that it is possible to select a front fixing hole 70f at a position suitable for fastening the front tire Tf from among the plurality of front fixing holes 70f.
The front fixing hole 70f is selected, for example, taking into consideration a position corresponding to the size (outer diameter, width, etc.) of the front wheel tire Tf and a position that can avoid contact between the front fastening belt 22 and parts (fenders, etc.) equipped on the loaded vehicle V.

A front reinforcing member 80f is attached to the rear surface 3r of the floor plate 3f between the portions where the front fixing holes 70f are formed.
6 and 7, the front reinforcing member 80f has a front first reinforcing bar 81f, a front reinforcing rib 82f, and a front second reinforcing bar 83f. Also, each of the front reinforcing members 80f is formed in a shape that allows the portion of the floor plate 3f in which the front fixing hole 70f is formed to exhibit a force capable of withstanding the force acting on the floor plate 3f when the front tire Tf is fastened.

The front first reinforcing bar 81f is formed into a rod shape using, for example, an iron pipe.
In addition, with its length oriented parallel to the direction in which the vehicle transporter 1 travels, the front first reinforcing bar 81f is positioned closer to the center line CL than the front fixing hole 70f formed on the back surface 3r at a position farthest from the center line CL.

The front reinforcing rib 82f is made of, for example, an iron plate material, and is formed in a U-shape with an open upper side when viewed from the front and rear.
In addition, with its length oriented parallel to the direction in which the vehicle transporter 1 travels, the front reinforcing rib 82f is positioned closer to the center line CL than the front fixing hole 70f formed on the back surface 3r at a position near the center in the width direction of the front wheel tire Tf.

The front second reinforcing bar 83f is formed into a rod shape using, for example, an iron pipe.
In addition, with its length oriented parallel to the direction in which the vehicle transporter 1 travels, the front second reinforcing bar 83f is positioned closer to the center line CL than the front fixing hole 70f formed on the back surface 3r at a position closest to the center line CL.

(Front fastening jig)
The pair of front fastening jigs 60f can be attached to the front fixing holes 70f and are disposed corresponding to one front tire Tf. Thus, the front tire fastening device 20 includes two pairs of front fastening jigs 60f.
8 and 9, the front fastening jig 60f includes a jig main body 61, two jig hooks 62, a position holder 63, and a holder plate 64. That is, the front fastening jig 60f includes a plurality of jig hooks 62. Note that Fig. 8(b) is a view taken along line B in Fig. 8(a).

The jig main body 61 is formed in a rectangular tubular shape with a quadrilateral cross section.
Three hook insertion holes 65 are formed in the surface (the upper surface in FIG. 8(a)) of the jig body 61. That is, a plurality of hook insertion holes 65 are formed in the front fastening jig 60f.
The back surface of the jig main body 61 (the lower surface in Figure 8 (a)) faces the surface (front surface) on which the front wheel tires Tf of the floor plate 3f are placed when the front fastening jig 60f is attached to the front fixing hole 70f, for example, as shown in Figure 7.

The hook insertion hole 65 is formed in a groove shape having long and short sides. The long sides of the hook insertion hole 65 are parallel to the long sides of the jig body 61, and the short sides of the hook insertion hole 65 are parallel to the short sides of the jig body 61.
Furthermore, as shown in FIG. 7, the three hook insertion holes 65 are arranged in the width direction of the front tire Tf in a state in which the front fastening jig 60f is attached to the front fixing hole 70f.
The interval between adjacent hook insertion holes 65 arranged along the width direction of the front tire Tf is narrower than the interval between adjacent front fixing holes 70f arranged along the width direction of the front tire Tf. In other words, the interval between adjacent front fixing holes 70f arranged along the width direction of the front tire Tf is wider than the interval between adjacent hook insertion holes 65 arranged along the width direction of the front tire Tf.

The jig hook portion 62 is formed on the back surface of the jig body portion 61. Furthermore, as shown in Fig. 7, for example, when the front fastening jig 60f is attached to the front fixing hole 70f, the jig hook portion 62 faces a surface (back surface 3r) opposite to a surface (front surface) of the floor board 3f facing the jig body portion 61.
The jig hook portion 62 includes a hook base portion 62a and a hook hanging portion 62b.

The hook base 62a is formed into a cylindrical shape with a square cross section. The base end of the hook base 62a is attached to the back surface of the jig body 61. The tip of the hook base 62a protrudes from the back surface of the jig body 61.

The hook hook portion 62b is formed in a cylindrical shape with a square cross section. The hook hook portion 62b is formed continuous with the tip of the hook base portion 62a and is disposed parallel to the jig body portion 61. Therefore, a gap is formed between the back surface of the jig body portion 61 and the hook hook portion 62b.
The jig hook portion 62 is formed in a shape such that the gap formed between the hook hanging portion 62b and the back surface of the jig body portion 61 becomes the gap shown in Fig. 7. Specifically, the jig hook portion 62 is formed in a shape such that a front first reinforcing bar 81f, a front reinforcing rib 82f, and a front second reinforcing bar 83f are disposed between the jig hook portion 62 and the back surface 3r with the front fastening jig 60f attached to the front fixing hole 70f.

The position holding portion 63 is attached to a surface of the jig main body portion 61 that is positioned far from the center line CL when the front fastening jig 60f is attached to the front fixing hole 70f (in the following description, this may be referred to as the "outer surface").
In addition, the position maintaining portion 63 includes a bracket portion 66 , a cylinder portion 67 , and a rod portion 68 .

The bracket portion 66 includes a bracket base portion 90 and a rod support portion 91 .
The bracket base 90 is formed in a rectangular plate shape. One end face of the two long sides of the bracket base 90 is attached to a position adjacent to the outer surface of the upper surface of the jig main body 61. Therefore, the bracket base 90 and the upper surface of the jig main body 61 are configured in an L-shape when viewed from the side of the jig main body 61.

The rod support portion 91 is formed in a shape in which a rectangular plate material is bent at two positions at an angle of approximately 90°, and has a first plate portion 91a, a second plate portion 91b, and a third plate portion 91c.
One end of the first plate portion 91a is fixed to an end of the bracket base portion 90 that is far from the jig hook portion 62. Further, a through hole (not shown) penetrating the first plate portion 91a is formed in the first plate portion 91a.

The second plate portion 91b has one end fixed to the other end of the first plate portion 91a and is disposed parallel to the hook base 62a.
The third plate portion 91c has one end fixed to the other end of the second plate portion 91b and is disposed parallel to the first plate portion 91a. The third plate portion 91c protrudes from the second plate portion 91b in the same direction as the first plate portion 91a. The length by which the third plate portion 91c protrudes from the second plate portion 91b is shorter than the length by which the first plate portion 91a protrudes from the second plate portion 91b.

The cylinder portion 67 includes a large diameter cylinder portion 67a and a small diameter cylinder portion 67b.
The large diameter cylinder portion 67a is formed in a cylindrical shape.
One end of the large diameter cylinder portion 67a (the upper end in FIG. 8) is attached to one surface of the first plate portion 91a (the lower surface in FIG. 8). The hole of the large diameter cylinder portion 67a is arranged coaxially with the through hole formed in the first plate portion 91a. The inner diameter of the hole of the large diameter cylinder portion 67a is larger than the inner diameter of the through hole formed in the first plate portion 91a.
The other end (the lower end in Figure 8) of the large diameter cylinder portion 67a is positioned at the same position as the base end of the hook base 62a when viewed in the radial direction of the large diameter cylinder portion 67a (the left-right direction in Figure 8).

The small diameter portion 67b is formed in a cylindrical shape. The outer diameter of the small diameter portion 67b is smaller than the inner diameter of the large diameter portion 67a. The small diameter portion 67b is inserted into the large diameter portion 67a from the other end of the large diameter portion 67a (the lower end in FIG. 8). The small diameter portion 67b and the large diameter portion 67a are arranged coaxially.
As shown in FIG. 9, a step 67c is formed on the inner diameter surface of the cylinder small diameter portion 67b.
The step 67c is disposed at the end of the small diameter portion 67b farther from the large diameter portion 67a (the lower end in FIG. 9 ) and protrudes from the inner diameter surface of the small diameter portion 67b toward the central axis of the small diameter portion 67b. As a result, the inner diameter of the small diameter portion 67b differs between the portion where the step 67c is not formed and the portion where the step 67c is formed. The inner diameter of the small diameter portion 67b in the portion where the step 67c is not formed is larger than the inner diameter of the small diameter portion 67b in the portion where the step 67c is formed.

As shown in FIGS. 8 and 9, the rod portion 68 includes a large diameter portion 68a, a medium diameter portion 68b, a small diameter portion 68c, and a grip portion 68d.
The rod large diameter portion 68a is formed in a cylindrical shape, and is disposed on the other surface (the upper surface in FIG. 8) of the first plate portion 91a.

The rod medium diameter portion 68b is formed of a cylinder having an outer diameter smaller than that of the rod large diameter portion 68a, and is fixed to one end (the lower end in FIG. 9) of the rod large diameter portion 68a.
The rod medium diameter portion 68b is disposed inside the cylinder large diameter portion 67a and inside a portion of the cylinder small diameter portion 67b where the step portion 67c is not formed. A coil spring 69 is disposed around the rod medium diameter portion 68b. The axial direction of the rod small diameter portion 68c is parallel to the axial directions of the cylinder large diameter portion 67a and the cylinder small diameter portion 67b.

One end of the coil spring 69 (the upper end in FIG. 9) is in contact with the other surface (the lower surface in FIG. 9) of the first plate portion 91 a, and the other end is in contact with the step portion 67 c. The direction in which the coil spring 69 expands and contracts is parallel to the axial direction of the rod medium diameter portion 68 b.
The inner diameter of the coil spring 69 is larger than the inner diameter of the through hole formed in the first plate portion 91a and the inner diameter of the portion of the cylinder small diameter portion 67b where the step portion 67c is formed.
Therefore, when no load is applied, the coil spring 69 disposed inside the cylinder portion 67 pushes the cylinder small diameter portion 67b in a direction away from the first plate portion 91a by the force of expansion. Therefore, when no load is applied, the coil spring 69 disposed inside the cylinder portion 67 moves the rod portion 68 to a position where the rod large diameter portion 68a contacts the first plate portion 91a.

The rod small diameter portion 68c is formed of a cylinder having an outer diameter smaller than that of the rod medium diameter portion 68b, and is fixed to one end (the lower end in FIG. 9) of the rod medium diameter portion 68b.
The rod small diameter portion 68c is disposed inside the portion of the cylinder small diameter portion 67b where the step portion 67c is formed, and is fixed to the cylinder small diameter portion 67b. The axial direction of the rod small diameter portion 68c is parallel to the axial directions of the cylinder large diameter portion 67a and the cylinder small diameter portion 67b.

The grip portion 68d is formed of a cylinder and is fixed to the other end (the upper end in Figure 9) of the rod large diameter portion 68a with the central axis of the grip portion 68d perpendicular to the central axis of the rod large diameter portion 68a.
Furthermore, the grip portion 68d is disposed at a position that does not overlap with the third plate portion 91c when viewed in the longitudinal direction of the rod large diameter portion 68a (the vertical direction in FIG. 9).

The holding plate portion 64 is formed in a rectangular plate shape and is attached to the surface of the jig body portion 61 .
The holding plate portion 64 has three holding holes 64a formed therein.

The retaining holes 64a are formed in a circular shape, and overlap with the three hook insertion holes 65, respectively, when viewed from the thickness direction of the retaining plate portion 64. In addition, the retaining holes 64a surround the hook insertion holes 65, when viewed from the thickness direction of the retaining plate portion 64.
The inner diameter of the retaining hole 64 a is larger than the length of the long side of the hook insertion hole 65 .

(Front fastening belt)
As shown in FIG. 10 , the front fastening belt 22 has a front belt body 22 a , a front cover portion 22 b , a connecting ring 22 f , a front first hook 25 , and a front second hook 26 .
The front belt body 22a is formed in a belt shape by knitting polyester fibers having excellent tensile strength, for example.

The front cover portion 22b is disposed at a position of the front belt body 22a between the front first hook 25 and the front second hook 26. The front cover portion 22b contacts the outer peripheral surface of the front tire Tf and transmits tension to the front first hook 25, thereby reducing friction generated between the front belt body 22a and the front tire Tf.
The connecting ring 22f is attached to the base end 22k of the front belt body 22a. The connecting ring 22f is formed by bending a cylindrical member into a ring shape so that it can be connected to the hook 27f. With the hook 27f connected to the connecting ring 22f, the front lashing belt 22 can be tightened by rotating the handle 27h.

The front first hook 25 is connected to the tip 22s of the front belt body 22a, and is formed in a shape that allows it to be attached to the hook insertion hole 65.
As shown in Fig. 11, the front first hook 25 has a main body portion 25h, a connecting portion 25g, a shaft portion 25j, a retaining portion 25s, and a disk portion 25c. Fig. 11(b) is a view taken along line B in Fig. 11(a), Fig. 11(c) is a view taken along line C in Fig. 11(a), and Fig. 11(d) is a view taken along line D in Fig. 11(a).
The main body portion 25h is formed in a U-shape.

The connecting portion 25g is formed in a cylindrical shape, and both ends are respectively connected to a pair of opposing flat plate portions of the main body portion 25h.
Furthermore, the connecting portion 25g is connected to the main body portion 25h in a state in which it can rotate with respect to the main body portion 25h, with the central axis of the connecting portion 25g serving as the axis of rotation.

The shaft portion 25j is formed in a rod shape.
One end of the shaft portion 25j is integrally formed with the main body portion 25h, and the other end of the shaft portion 25j protrudes from the center of the main body portion 25h.

The retaining portion 25s is formed in a rectangular plate shape and is provided on the other end of the shaft portion 25j. The retaining portion 25s is formed in a shape that allows it to be inserted into the hook insertion hole 65.
Specifically, the length of the short side of the retaining portion 25s is smaller than the width of the short side of the hook insertion hole 65. The length of the long side of the retaining portion 25s is smaller than the width of the long side of the hook insertion hole 65.

When viewed from the axial direction of shaft portion 25j, the length direction of the long side of retaining portion 25s intersects with the axial direction of connecting portion 25g.
In the embodiment, as an example, a case will be described in which the length direction of the long side of the retaining portion 25s is perpendicular (intersects at 90°) to the axial direction of the connecting portion 25g when viewed from the axial direction of the shaft portion 25j.

The disk portion 25c is formed in a circular plate shape and is attached to the shaft portion 25j between the main body portion 25h and the retaining portion 25s.
6 and 7, the disk portion 25c is disposed inside the retaining hole 64a when the front first hook 25 is attached to the hook insertion hole 65. The outer peripheral surface of the disk portion 25c faces the inner peripheral surface of the retaining hole 64a when the front first hook 25 is attached to the hook insertion hole 65, as shown in FIG.

The diameter of the disk portion 25c is smaller than the inner diameter of the retaining hole 64a.
Therefore, when the front first hook 25 is attached to the hook insertion hole 65, a gap of about several mm is formed between the disk portion 25c and the retaining hole 64a.

The front second hook 26 is attached to a position in the middle part of the front belt body 22a, close to the base end 22k, is capable of moving along the length of the front belt body 22a, and is formed in a shape that allows it to be attached to the hook insertion hole 65.
As shown in FIG. 10, the front second hook 26 has a main body portion 26h, a connecting portion 26g, a shaft portion 26j, a retaining portion 26s, and a disk portion 26c.
Note that main body portion 26h and main body portion 25h, connecting portion 26g and connecting portion 25g, shaft portion 26j and shaft portion 25j, retaining portion 26s and retaining portion 25s, and disk portion 26c and disk portion 25c each have the same configuration, and therefore detailed description of main body portion 26h, connecting portion 26g, shaft portion 26j, retaining portion 26s, and disk portion 26c will be omitted.

Furthermore, the front second hook 26 is capable of moving along the length direction of the front belt main body 22a by being inserted between the main body portion 26h and the connecting portion 26g.
Therefore, the front fastening belt 22 has a front first hook 25 attached to one end and a front second hook 26 attached to the front fastening belt 22 so as to be movable along the length of the front fastening belt 22 between both ends.

<Rear tire securing device>
As shown in FIG. 2 , the rear tire fastening device 30 includes a rear fixing hole 70r, a rear fastening jig 60r, and a rear fastening belt 32.

(Rear fixing hole)
The rear fixing hole 70r is formed in the floor plate 3f, similar to the front fixing hole 70f. Also, the rear fixing hole 70r is formed as a rectangular hole penetrating the floor plate 3f, similar to the front fixing hole 70f.
In the embodiment, as an example, a case will be described in which 40 rear fixing holes 70r are formed for one rear tire Tr.
The forty rear fixing holes 70r are arranged in three groups, spaced apart from one another along the direction in which the vehicle transporter 1 travels.

Of the three groups, the front group is made up of eight rear fixing holes 70r, and is formed by a set of four rows arranged along the direction in which the vehicle transporter 1 travels. Each set of four rows has two rear fixing holes 70r. One of the two rear fixing holes 70r in each set of four rows is formed at a position near the center in the width direction of the rear tire Tr. In addition, the other of the two rear fixing holes 70r in each set of four rows is formed at a position closer to the center line CL than one of the two rear fixing holes 70r.

Of the three groups, the rear group is made up of eight rear fixing holes 70r, and is formed by a set of four rows arranged along the direction in which the vehicle transporter 1 travels. Each set of four rows has two rear fixing holes 70r. One of the two rear fixing holes 70r in each set of four rows is formed at a position near the center in the width direction of the rear tire Tr. The other of the two rear fixing holes 70r in each set of four rows is formed at a position farther from the center line CL than one of the two rear fixing holes 70r.

Of the three groups, the group located between the front group and the rear group is made up of 24 rear fixing holes 70r, and is formed of eight rows arranged along the direction in which the vehicle transporter 1 travels. Each of the eight rows has three rear fixing holes 70r. One of the three rear fixing holes 70r is formed at a position near the center in the width direction of the rear tire Tr. The remaining two of the three rear fixing holes 70r are formed at positions closer to the center line CL and farther from the center line CL than one of the three rear fixing holes 70r, respectively.

Therefore, the multiple rear fixing holes 70r are arranged in an area of the floor plate 3f where the rear tire Tr is arranged.
The multiple rear fixing holes 70r are arranged in a direction along the width direction of the rear tire Tr and in a direction perpendicular to the width direction of the rear tire Tr.
Furthermore, the interval between adjacent rear fixing holes 70r arranged along the width direction of the rear tire Tr is wider than the interval between adjacent hook insertion holes 65 arranged along the width direction of the rear tire Tr.

In the embodiment, the floor plate 3f is formed with a plurality of (40) rear fixing holes 70r, so that it is possible to select a rear fixing hole 70r at a position suitable for fastening the rear tire Tr from the plurality of rear fixing holes 70r.
The rear fixing hole 70r is selected, for example, taking into consideration a position according to the size of the rear wheel tire Tr or a position that can avoid contact between the front securing belt 22 and parts of the loaded vehicle V.
In the embodiment, the floor plate 3f is formed with a plurality of front fixing holes 70f and rear fixing holes 70r. Therefore, it is possible to select the front fixing holes 70f and rear fixing holes 70r at positions suitable for fastening the front tires Tf and rear tires Tr from the plurality of front fixing holes 70f and rear fixing holes 70r according to the wheelbase of the loaded vehicle V.

A rear reinforcing member (not shown) having a similar configuration to the front reinforcing member 80f is attached to the rear surface 3r of the floor plate 3f between the portions where the rear fixing holes 70r are formed.
The configuration of the rear reinforcing member is similar to that of the front reinforcing member 80f, and therefore a detailed description thereof will be omitted.
The rear reinforcing member may be formed using the same material as the front reinforcing member 80f.

(Rear fastening jig)
A pair of rear fastening jigs 60r can be attached to the rear fixing holes 70r, and are disposed corresponding to one rear tire Tr. Therefore, the rear tire fastening device 30 includes two pairs of rear fastening jigs 60r.
The configuration of the rear fastening jig 60r is similar to that of the front fastening jig 60f, and therefore a detailed description thereof will be omitted.

(Rear fastening belt)
As shown in Figure 12, the rear fastening belt 32 has a rear belt main body 32a, a connecting belt portion 32b, a rear cover portion 32c, a rear first hook 51, a rear second hook 52, and a connecting hook 53.

The rear belt body 32a is formed in a belt shape by knitting, for example, polyester fibers having excellent tensile strength, and is wound around the drum 31d.
Furthermore, a rear tightening device 31 is attached to the base end of the rear belt body 32a.

The rear fasteners 31 are fastening means for fastening and fixing the rear tires Tr of the loaded vehicle V to the loading platform 3, and are arranged on the left and right sides rearward of the center of the loading platform 3.
As shown in FIG. 12, the rear tightening device 31 includes a handle 31h and a ratchet mechanism 31t.
The ratchet mechanism 31t includes a drum 31d, and operates in conjunction with an operation of an operator (such as a driver) rotating a handle 31h.

The base end of the connecting belt portion 32b is connected to the rear tightening device 31 on the opposite side to the rear belt body 32a.

The rear cover portion 32c is disposed in a position on the rear belt body 32a between the rear first hook 51 and the rear tightening device 31. The rear cover portion 32c contacts the outer peripheral surface of the rear tire Tr and transmits tension to the rear first hook 51, thereby reducing friction generated between the rear belt body 32a and the rear tire Tr.

The rear first hook 51 is connected to the tip portion 32 s of the rear belt body 32 a , and is formed into a shape that allows it to be attached to the hook insertion hole 65 .
As shown in FIG. 12, the rear first hook 51 has a main body portion 51h, a connecting portion 51g, a shaft portion 51j, a retaining portion 51s, and a disk portion 51c.
Note that main body portion 51h and main body portion 25h, connecting portion 51g and connecting portion 25g, shaft portion 51j and shaft portion 25j, retaining portion 51s and retaining portion 25s, and disk portion 51c and disk portion 25c each have the same configuration, and therefore detailed description of main body portion 51h, connecting portion 51g, shaft portion 51j, retaining portion 51s, and disk portion 51c will be omitted.

The rear second hook 52 is attached to the middle part of the rear belt body 32a at a position between the rear cover part 32c and the rear fastener 31, and is movable along the length direction of the rear belt body 32a. The rear second hook 52 is formed into a shape that allows it to be attached to the hook insertion hole 65.
As shown in FIG. 12, the rear second hook 52 has a main body portion 52h, a connecting portion 52g, a shaft portion 52j, a retaining portion 52s, and a disk portion 52c.
Note that main body portion 52h and main body portion 25h, connecting portion 52g and connecting portion 25g, shaft portion 52j and shaft portion 25j, retaining portion 52s and retaining portion 25s, and disk portion 52c and disk portion 25c each have the same configuration, and therefore detailed description of main body portion 52h, connecting portion 52g, shaft portion 52j, retaining portion 52s, and disk portion 52c will be omitted.

Furthermore, the rear second hook 52 is capable of moving along the length direction of the rear belt main body 32a by being inserted between the main body portion 52h and the connecting portion 52g.
Therefore, the rear tack belt 32 has a rear first hook 51 attached to one end and a rear second hook 52 attached to the front tack belt 22 so as to be movable along the length of the rear tack belt 32 between both ends.

As described above, the front first hook 25, the front second hook 26, the rear first hook 51, and the rear second hook 52 all have the same configuration.
Therefore, the front first hook 25, the front second hook 26, the rear first hook 51, and the rear second hook 52 can be shared.

The connecting hook 53 is formed in a hook shape that can be attached to and detached from the fastening ring 11, and is connected to the tip of the connecting belt part 32b. With the connecting hook 53 attached to the fastening ring 11, the worker can tighten the rear lashing belt 32 by rotating the handle 31h.
Further, an opening/closing piece 53b is attached to the connecting hook 53.
The opening/closing piece 53b is formed in a plate shape. A spring (not shown) is attached to the opening/closing piece 53b. In an unloaded state, the opening/closing piece 53b covers the opening of the connecting hook 53 by the elastic force of the spring, thereby holding the connecting hook 53 in a position to close the connecting hook 53.
As described above, in the tire fastening device (front tire fastening device 20, rear tire fastening device 30) of the embodiment, a plurality of fastening holes are formed in the area of the floor plate 3f where the tires (front tire Tf, rear tire Tr) are arranged, arranged in the direction along the tire width direction and in the direction perpendicular to the tire width direction. In addition, each of the pair of fastening jigs (front tire fastening device 20, rear tire fastening device 30) that are attached to the two fastening holes (front fastening hole 70f, rear fastening hole 70r) that are spaced apart in the direction perpendicular to the tire width direction and fasten the tire together with the fastening belts (front fastening belt 22, rear fastening belt 32) is provided with a structure for attaching the fastening belt at a plurality of positions along the tire width direction.
In the embodiment, the structure provided on the fastening jig for attaching the fastening belts to a plurality of positions along the width direction of the tire is, for example, a plurality of hook insertion holes 65 .

<Jig bracket>
As shown in Figures 13 and 14, the jig bracket 9 includes a frame portion 93 and two holding pipe portions 94. Note that, for example, one front fastening jig 60f and two rear fastening jig 60r are attached to one jig bracket 9 as shown in Figures 15 and 16.

The frame portion 93 is formed in a shape in which a rectangular plate material is bent at two angles of approximately 90 degrees, and has a mounting plate portion 93a and two flange portions 93b.
The mounting plate portion 93a is formed in a flat plate shape. The thickness direction of the mounting plate portion 93a is parallel to the thickness direction of the wainscot 6.

The mounting plate portion 93a is formed with three pairs of hook holding holes 95 (six in total).
The hook holding hole 95 has the same shape as the front fixing hole 70f and the rear fixing hole 70r.
One set of hook retaining holes 95 is arranged in the up-down direction, and three sets of hook retaining holes 95 are arranged in the left-right direction. Also, one set of hook retaining holes 95 is arranged at intervals equal to the intervals between adjacent front fixing holes 70f and the intervals between adjacent rear fixing holes 70r.

Each of the two flange portions 93b is formed in a rectangular flat plate shape.
One of the long sides of the flange portion 93b is continuous with the left and right ends of the mounting plate portion 93a, and the other of the long sides of the flange portion 93b is fixed to the waist board 6 by welding or the like.

Each of the two holding pipe parts 94 is formed in a cylindrical shape. Both ends of the holding pipe part 94 are fixed to the opposing surfaces of the two flange parts 93b.
The position at which the holding pipe portion 94 is fixed to the flange portion 93b is a position at which a gap is formed between the holding pipe portion 94 and the waist board 6 in which the jig hook portion 62 can be positioned.
One of the two holding pipe parts 94 is disposed below the hook holding hole 95 arranged at the upper end of the pair of hook holding holes 95. The other of the two holding pipe parts 94 is disposed below the hook holding hole 95 arranged at the lower end of the pair of hook holding holes 95.

<Attachment and detachment of the fastening jig to the jig bracket>
13 to 16, an operation for attaching and detaching the front fastening jig 60f and the rear fastening jig 60r to and from the jig bracket 9 will be described. Note that since the operation for attaching and detaching the front fastening jig 60f to and from the jig bracket 9 and the operation for attaching and detaching the rear fastening jig 60r to and from the jig bracket 9 are the same operation, only the operation for attaching and detaching the front fastening jig 60f to and from the jig bracket 9 will be described.
First, the operation of mounting the front fastening jig 60f on the jig bracket 9 will be described.

When the front fastening jig 60f is attached to the jig bracket 9, the two jig hook portions 62 are inserted from above into a pair of hook holding holes 95 in the order of the hook hanging portion 62b to the hook base portion 62a. At this time, the cylinder small diameter portion 67b is pressed against the mounting plate portion 93a, causing the coil spring 69 to contract and the cylinder small diameter portion 67b and the rod portion 68 to move rearward (in the direction away from the mounting plate portion 93a). When the rod portion 68 moves rearward, the rod large diameter portion 68a moves upward and away from the first plate portion 91a.
After the jig hook portion 62 is inserted into the hook holding hole 95, the front fastening jig 60f is moved downward, and the cylinder small diameter portion 67b is placed in the hook holding hole 95. In addition, when viewed from the thickness direction of the mounting plate portion 93a, the jig hook portion 62 and the holding pipe portion 94 are placed in an overlapping state.

At this time, the rod portion 68 and the cylinder small diameter portion 67b, which had been moving rearward in contact with the mounting plate portion 93a, move forward as the coil spring 69 expands, as the cylinder small diameter portion 67b is disposed in the hook holding hole 95. When the rod portion 68 moves forward, the rod large diameter portion 68a moves downward and comes into contact with the first plate portion 91a.
When the cylinder small diameter portion 67b moves forward, the mounting plate portion 93a and the cylinder small diameter portion 67b overlap when viewed from the top-bottom direction inside the hook holding hole 95. Therefore, even if a force is applied to move the front fastening jig 60f upward, the cylinder small diameter portion 67b comes into contact with the mounting plate portion 93a inside the hook holding hole 95. As a result, the jig hook portion 62 does not completely overlap the hook holding hole 95 when viewed from the thickness direction of the mounting plate portion 93a, so it is possible to prevent the front fastening jig 60f from coming off the hook holding hole 95.

Next, the operation of detaching the front fastening jig 60f from the jig bracket 9 will be described with reference to Figs.
When the front fastening jig 60f is to be detached from the jig bracket 9, the grip portion 68d is pulled rearward to contract the coil spring 69, and the cylinder small diameter portion 67b and the rod portion 68 are moved rearward.
Then, the front fastening jig 60f is moved upward, and the jig hook portions 62 are pulled out of the hook holding holes 95 in the order from the hook base portion 62a to the hook hanging portion 62b. As a result, the front fastening jig 60f is removed from the hook holding holes 95, and the front fastening jig 60f is detached from the jig bracket 9.

<Operation>
Next, a method for fastening tires using the tire fastening devices (the front tire fastening device 20 and the rear tire fastening device 30) will be described.
When loading a loaded vehicle V onto the vehicle transporter 1, the rear gate 4 is moved to the open position, and the loaded vehicle V is driven onto the loading platform 3, or the loaded vehicle V is towed onto the loading platform 3 using a winch. Then, as shown in Fig. 1, the left and right front tires Tf are brought into contact with the tire stopper blocks 23 to stop the loaded vehicle V, and the loaded vehicle V is loaded onto the loading platform 3. Thereafter, the left and right front tires Tf are fastened to the loading platform 3 by the front tire fastening device 20, and the left and right rear tires Tr are fastened to the loading platform 3 by the rear tire fastening device 30, and then the rear gate 4 is moved to the closed position.

(Securing front tires)
When fastening the front tire Tf, the front tire fastening device 20 is used, and first, the two front fastening jigs 60f are formed at positions corresponding to the outer diameter of the front tire Tf and attached to two front fixing holes 70f adjacent to each other along the width direction of the front tire Tf.
When attaching the front fastening jigs 60f to the front fixing holes 70f, for example, as shown in Figures 1, 3 and 5, the two front fastening jigs 60f are arranged at positions where both ends of the front fastening belt 22 placed on the upper side of the tire outer circumferential surface Tsf are perpendicular to the floor plate 3f. Then, the two arranged front fastening jigs 60f are attached to the front fixing holes 70f. Note that, for the sake of explanation, the right front tire Tf and the right rear tire Tr are not shown in Figure 5.

That is, the front fastening jig 60f is attached to the front fastening hole 70f that is formed at a position where the tangent plane that contacts the tire outer peripheral surface Tsf is perpendicular to the floor plate 3f.

Therefore, with the front first hook 25 and the front second hook 26 placed between both ends on the upper side of the front tire Tf, it becomes possible to pull the front fastening belt 22, which is in contact along the outer circumferential surface of the front tire Tf, straight down.
Therefore, it is possible to secure the front tire Tf while the front fastening belt 22 is positioned at a position that least interferes with parts such as the fender equipped on the loaded vehicle V.

In the following description, the front fastening jig 60f positioned rearward of the center of the front tire Tf may be referred to as "one front fastening jig 60f," and the front fastening jig 60f positioned forward of the center of the front tire Tf may be referred to as "the other front fastening jig 60f." Also, the one front fastening jig 60f is the front fastening jig 60f that has been detached from the jig bracket 9.

When attaching the front fastening jig 60f to the front fixing hole 70f, the jig hook portion 62 is inserted from above into the front fixing hole 70f in the order of the hook hanging portion 62b to the hook base portion 62a. At this time, the cylinder small diameter portion 67b is pressed against the floor plate 3f, causing the coil spring 69 to contract and the cylinder small diameter portion 67b and the rod portion 68 to move upward (in the direction away from the floor plate 3f). When the rod portion 68 moves upward, the rod large diameter portion 68a moves upward and away from the first plate portion 91a.
After inserting the jig hook portion 62 into the front fixing hole 70f, the front fastening jig 60f is moved toward the center line CL, the cylinder small diameter portion 67b is positioned in the front fixing hole 70f, and the jig hook portion 62 and the front reinforcing member 80f are overlapped when viewed from the thickness direction of the floor board 3f.

That is, the front fastening jig 60f is attached to the front fixing hole 70f by moving the jig hook portion 62 inserted into the front fixing hole 70f along the width direction of the front tire Tf.
Specifically, the front fastening jig 60f is moved along the width direction of the front wheel tire Tf with the jig hook portion 62 inserted into the front fixing hole 70f, thereby achieving a fixed state in which the floor plate 3f is positioned between the jig main body portion 61 and the jig hook portion 62.
In addition, the multiple (two) jig hook portions 62 are arranged along the width direction of the front wheel tire Tf and inserted into the multiple (two) front fixing holes 70f arranged along the width direction of the front wheel tire Tf among the multiple front fixing holes 70f.

At this time, the rod portion 68 and the cylinder small diameter portion 67b, which had been moving upward in contact with the floor plate 3f, move downward with the expansion of the coil spring 69, as the cylinder small diameter portion 67b is disposed in the front fixing hole 70f. When the rod portion 68 moves downward, the rod large diameter portion 68a moves downward and comes into contact with the first plate portion 91a.
When the cylinder small diameter portion 67b moves downward, the floor plate 3f and the cylinder small diameter portion 67b overlap inside the front fixing hole 70f when viewed from the left-right direction. Therefore, even if a force is applied to move the front fastening jig 60f in a direction away from the center line CL, the cylinder small diameter portion 67b comes into contact with the floor plate 3f inside the front fixing hole 70f. As a result, the jig hook portion 62 does not completely overlap the front fixing hole 70f when viewed from the thickness direction of the floor plate 3f, so it is possible to prevent the front fastening jig 60f from coming off the front fixing hole 70f.
Therefore, the position maintaining portion 63 maintains the fixed state in which the front fastening jig 60f is attached to the front fixing hole 70f. Furthermore, the position maintaining portion 63 is disposed in the front fixing hole 70f in the fixed state.

Next, the retaining portion 25s of the front first hook 25 is inserted into one of the three hook insertion holes 65 formed in one front fastening jig 60f, and the disk portion 25c is placed inside the retaining hole 64a. When selecting one hook insertion hole 65 for one front fastening jig 60f, for example, a hook insertion hole 65 located at an appropriate position (for example, the center of the three) is selected depending on the state of fastening the front tire Tf.
Furthermore, the front first hook 25 is rotated circumferentially around the shaft portion 25j, so that when viewed from the thickness direction of the floor board 3f, the jig main body portion 61 provided on one of the front fastening tools 60f and the anti-slip portion 25s provided on the front first hook 25 overlap with each other.

When the jig body 61 and the retaining portion 25s are overlapped as viewed from the thickness direction of the floorboard 3f, even if a force is generated that causes the front first hook 25 to come off the front fastening jig 60f, the retaining portion 25s comes into contact with the jig body 61 from below. Therefore, the retaining portion 25s makes it possible to prevent the front first hook 25 from coming off the front fastening jig 60f.
Therefore, the front first hook 25 is provided with a slip-out prevention portion 25s that prevents the front first hook 25 from coming off the front fastening jig 60f when the front first hook 25 is attached to the hook insertion hole 65 and the width direction of the front fastening belt 22 is oriented parallel to the width direction of the front wheel tire Tf.

After that, as shown in FIG. 3, the front cover portion 22b is placed on the upper side of the tire outer peripheral surface Tsf. Then, the retaining portion 26s of the front second hook 26 is inserted into one of the three hook insertion holes 65 formed in the other front fastening jig 60f, and the disk portion 26c is placed inside the retaining hole 64a. When selecting one hook insertion hole 65 for the other front fastening jig 60f, as in the case of the one front fastening jig 60f, for example, a hook insertion hole 65 located in an appropriate position is selected depending on the state of fastening the front tire Tf.

Furthermore, the front second hook 26 is rotated circumferentially around the shaft portion 26j, so that when viewed from the thickness direction of the floor board 3f, the jig main body portion 61 provided on the other front fastening jig 60f and the anti-slip portion 26s provided on the front second hook 26 overlap each other.
Therefore, the front first hook 25 and the front second hook 26 can be moved along the width direction of the front tire Tf to set the position for fastening the front tire Tf.

Next, the base end 22k of the front belt body 22a is moved forward to connect the connecting ring 22f to the hook 27f, and then the handle 27h is rotated to tighten the front fastening belt 22.
When the front fastening belts 22 are tightened, the left and right front tires Tf can be fastened and fixed to the floor plate 3f, respectively, with the front cover portions 22b in contact with the outer circumferential surfaces Tsf.

As a result, the front first hook 25 is held in one of the front fastening tools 60f at a position where the posture of the front fastening belt 22 is perpendicular to the floor board 3f due to the tightening force generated by the front fastening belt 22.
In addition, the front second hook 26 is held by the other front fastening jig 60f in a position where the posture of the front fastening belt 22 is perpendicular to the floor board 3f due to the tightening force generated by the front fastening belt 22.
Therefore, one end of the front fastening belt 22 is connected to one of the front fastening tools 60f, and the other end is connected to the front fastening tool 27 via the other front fastening tool 60f, with a portion between both ends in contact with the outer circumferential surface Tsf.

Next, a procedure for releasing the front tire Tf secured by the front tire securing device 20 will be described.
When releasing the fastening of the front tires Tf, first, the handle 27h is rotated to loosen the front fastening belts 22.

Furthermore, the front second hook 26 is rotated in the circumferential direction of the shaft portion 26j, and the retaining portion 26s is pulled out of the hook insertion hole 65 formed in the other front fastening jig 60f. Also, the front first hook 25 is rotated in the circumferential direction of the shaft portion 25j, and the retaining portion 25s is pulled out of the hook insertion hole 65 formed in the one front fastening jig 60f.
Thereafter, the front lashing belts 22 are removed from the front tires Tf. The front lashing belts 22 removed from the front tires Tf are stored, for example, in the passenger seat or the like.

Next, for one of the front fastening jigs 60f, for example, while placing the thumb against the third plate portion 91c, the grip portion 68d is pulled with the fingers other than the thumb to contract the coil spring 69, thereby moving the cylinder small diameter portion 67b and the rod portion 68 upward.
Then, one of the front fastening jigs 60f is moved in a direction away from the center line CL. As a result, the jig hook portions 62 are pulled out of the front fixing holes 70f in the order from the hook base portion 62a to the hook hanging portion 62b, and the one of the front fastening jigs 60f is removed from the front fixing holes 70f, thereby releasing the fastening of the front tire Tf.

That is, the front fastening jig 60f can be changed between a fixed state and a detached state by moving the jig hook portion 62 in the width direction of the front tire Tf with the jig hook portion 62 inserted in the front fixing hole 70f. The detached state is a state in which the floor plate 3f is not disposed between the jig body portion 61 and the jig hook portion 62, and the front fastening jig 60f is not attached to the front fixing hole 70f.
One of the front fastening jigs 60f removed from the front fixing hole 70f is attached to the jig bracket 9. The other front fastening jig 60f may be left attached to the front fixing hole 70f, or may be removed from the front fixing hole 70f and stored in the passenger seat, etc.

(Securing rear tires)
When fastening the rear tire Tr, the rear tire fastening device 30 is used, and first, the two rear fastening jigs 60r are formed at positions corresponding to the outer diameter of the rear tire Tr, and are attached to two rear fixing holes 70r adjacent to each other along the width direction of the rear tire Tr.
When attaching the rear fastening jigs 60r to the rear fixing holes 70r, for example, as shown in Figures 1 and 5, the two rear fastening jigs 60r are placed at positions where both ends of the rear fastening belt 32 placed on the upper side of the tire outer circumferential surface Tsr are perpendicular to the floor plate 3f. Then, the two rear fastening jigs 60r thus placed are attached to the rear fixing holes 70r.
In the following description, the rear fastening jig 60r arranged forward of the center of the rear tire Tr may be referred to as "one rear fastening jig 60r," and the rear fastening jig 60r arranged rearward of the center of the rear tire Tr may be referred to as "the other rear fastening jig 60r." In addition, both rear fastening jig 60r are detached from the jig bracket 9 and attached to the rear fixing holes 70r.

When attaching the rear fastening jig 60r to the rear fixing hole 70r, the same operation is performed as when attaching the front fastening jig 60f to the front fixing hole 70f, so that the jig hook portion 62 and the rear reinforcing member overlap when viewed from the thickness direction of the floor board 3f.
At this time, the floor plate 3f and the cylinder small diameter portion 67b overlap inside the rear fixing hole 70r when viewed from the left-right direction. Therefore, even if a force is applied to move the rear fastening jig 60r in a direction away from the center line CL, the cylinder small diameter portion 67b comes into contact with the floor plate 3f inside the rear fixing hole 70r. As a result, the jig hook portion 62 does not completely overlap the rear fixing hole 70r when viewed from the thickness direction of the floor plate 3f, so it is possible to prevent the rear fastening jig 60r from coming off the rear fixing hole 70r.

Next, the retaining portion 51s of the rear first hook 51 is inserted into one of the three hook insertion holes 65 formed in one rear fastening jig 60r, and the disk portion 51c is placed inside the retaining hole 64a. When selecting one hook insertion hole 65 for one rear fastening jig 60r, for example, a hook insertion hole 65 located at an appropriate position (for example, the center of the three) is selected depending on the state of fastening the rear tire Tr.
Furthermore, the rear first hook 51 is rotated circumferentially about the shaft portion 51j, so that when viewed from the thickness direction of the floor board 3f, the jig main body portion 61 provided on one of the rear fastening jig 60r and the anti-slip portion 51s provided on the rear first hook 51 overlap with each other.

Thereafter, the rear cover portion 32c is placed on the upper side of the tire outer circumferential surface Tsr. Then, the retaining portion 52s of the rear second hook 52 is inserted into one of the three hook insertion holes 65 formed in the other rear fastening jig 60r, and the disk portion 52c is placed inside the retaining hole 64a. When selecting one hook insertion hole 65 for the other rear fastening jig 60r, similar to the one rear fastening jig 60r, for example, a hook insertion hole 65 that is located at an appropriate position is selected depending on the state of fastening the rear tire Tr.
Furthermore, the rear second hook 52 is rotated circumferentially around the shaft portion 52j, so that when viewed from the thickness direction of the floor board 3f, the jig main body portion 61 provided on the other rear fastening jig 60r and the anti-slip portion 52s provided on the rear second hook 52 overlap with each other.

Next, after the connecting hook 53 is attached to the fastening ring 11, the handle 31h is rotated to fasten the rear fastening belt 32.
When the rear fastening belts 32 are tightened, the left and right rear tires Tr can be fastened and fixed to the floor plate 3f with the rear cover portions 32c in contact with the outer circumferential surfaces Tsr.

As a result, the rear first hook 51 is held by one of the rear fastening tools 60r in a position where the posture of the rear fastening belt 32 is perpendicular to the floor board 3f due to the tightening force generated by the rear fastening belt 32.
In addition, the rear second hook 52 is held by the other rear fastening jig 60r in a position where the rear fastening belt 32 is positioned perpendicular to the floor board 3f due to the tightening force generated by the rear fastening belt 32.
Therefore, one end of the rear fastening belt 32 is connected to one of the rear fastening tools 60r, and the other end is connected to the rear fastening tool 31 via the other rear fastening tool 60r, with a portion between both ends in contact with the outer circumferential surface Tsr.

Next, a procedure for releasing the rear tire Tr secured by the rear tire securing device 30 will be described.
When releasing the fastening of the rear tire Tr, first, the handle 31h is rotated to loosen the rear fastening belt 32.

Furthermore, the rear second hook 52 is rotated in the circumferential direction of the shaft portion 52j, and the retaining portion 52s is pulled out of the hook insertion hole 65 formed in the other rear fastening jig 60r. Also, the rear first hook 51 is rotated in the circumferential direction of the shaft portion 51j, and the retaining portion 51s is pulled out of the hook insertion hole 65 formed in the one rear fastening jig 60r.
Thereafter, the rear tether belts 32 are removed from the rear tires Tr. The rear tether belts 32 removed from the rear tires Tr are stored, for example, in the passenger seat.

Next, for each of the two rear fastening jigs 60r, for example, while placing the thumb against the third plate portion 91c, the grip portion 68d is pulled with the fingers other than the thumb to contract the coil spring 69, thereby moving the cylinder small diameter portion 67b and the rod portion 68 upward.
Then, the two rear fastening jigs 60r are each moved in a direction away from the center line CL, and the jig hook portions 62 are pulled out of the rear fixing holes 70r in the order from the hook base portions 62a to the hook hanging portions 62b, thereby releasing the fastening of the rear tire Tr. The two rear fastening jigs 60r removed from the rear fixing holes 70r are attached to the jig bracket 9.

<Actions and Effects of the Embodiments>
The tire fastening device (front tire fastening device 20, rear tire fastening device 30) of the embodiment can achieve the following actions and effects.
(1) In the area of the floor plate 3f where the tires (front tires Tf, rear tires Tr) are arranged, a plurality of fixing holes are formed arranged in a direction along the tire width direction and a direction along a direction perpendicular to the tire width direction. In addition, a pair of fastening jigs (front tire fastening device 20, rear tire fastening device 30) are attached to the two fixing holes (front fixing hole 70f, rear fixing hole 70r) arranged at a distance from each other in the direction perpendicular to the tire width direction, and fasten the tire together with the fastening belts (front fastening belt 22, rear fastening belt 32). Each of the pair of fastening jigs is provided with a structure for attaching the fastening belts at a plurality of positions along the tire width direction.
Therefore, it is possible to select a fixing hole at a position suitable for fastening the tire in the direction along the tire width direction and the direction perpendicular to the tire width direction from among the multiple fixing holes arranged on the floor plate 3f. In addition, it is possible to select a hook insertion hole 65 at a position suitable for fastening the tire in the tire width direction from among the multiple hook insertion holes 65, which are an example of a structure for attaching a fastening belt.
As a result, by combining a fixing hole selected from the multiple fixing holes arranged on the floor panel 3f with the hook insertion hole 65 formed in the fastening jig, it is possible to improve the freedom of the position for fastening the tire.

Therefore, in order to accommodate a wide variety of vehicles with different wheelbases and tire sizes, there is no need to form many openings in the floor panel 3f, and there is no need to add a structure to reinforce the floor panel 3f.
This makes it possible to provide a tire securing device that can suppress an increase in weight without reducing the degree of freedom in the position where the tire is secured.
(2) A plurality of fixing holes (front fixing holes 70f, rear fixing holes 70r) are arranged in an area of the floor plate 3f where the tires (front tire Tf, rear tire Tr) are arranged, and are arranged in a direction along the tire width direction and a direction along a direction perpendicular to the tire width direction. The fastening belts (front fastening belt 22, rear fastening belt 32) are provided with a first hook (front first hook 25, rear first hook 51) and a second hook (front second hook 26, rear second hook 52). In addition, the fastening jig (front tire fastening device 20, rear tire fastening device 30) is formed with a plurality of hook insertion holes 65 to which the first hook or the second hook can be attached. The plurality of hook insertion holes 65 are arranged along the tire width direction when the fastening jig is attached to the fixing holes.

Therefore, it is possible to select a fixing hole at a position suitable for fastening the tire in the direction along the tire width direction and the direction perpendicular to the tire width direction from among the multiple fixing holes arranged on the floor plate 3f. In addition, it is possible to select a hook insertion hole 65 at a position suitable for fastening the tire in the tire width direction from among the multiple hook insertion holes 65 formed in the fastening jig.
As a result, by combining a fixing hole selected from the multiple fixing holes arranged on the floor panel 3f with the hook insertion hole 65 formed in the fastening jig, it is possible to improve the freedom of the position for fastening the tire.

Therefore, in order to accommodate a wide variety of vehicles with different wheelbases and tire sizes, there is no need to form many openings in the floor panel 3f, and there is no need to add a structure to reinforce the floor panel 3f.
This makes it possible to provide a tire securing device that can suppress an increase in weight without reducing the degree of freedom in the position where the tire is secured.

(3) The fastening jig includes a jig body portion 61 having a hook insertion hole 65 formed on its front surface and a back surface facing the front surface of the floor plate 3f when the fastening jig is attached to the fixing hole, and a jig hook portion 62 facing the back surface 3r of the floor plate 3f when the fastening jig is attached to the fixing hole. In addition, the fastening jig can be changed between a fixed state and a released state by moving the jig hook portion 62 in the width direction of the tire with the jig hook portion 62 inserted in the fixing hole.
Therefore, when the fastening jig is attached to the fixing hole, the jig main body portion 61 faces the surface of the floor board 3f and the jig hook portion 62 faces the back surface 3r, so that the floor board 3f is clamped by the fastening jig.
As a result, the fastening jig can be stabilized in a state where it is attached to the fixing hole by the jig body portion 61 and the jig hook portion 62 .

(4) The fastening jig includes a plurality of jig hook portions 62. The plurality of jig hook portions 62 are arranged in the width direction of the tire and are inserted into a plurality of fixing holes that are arranged in the width direction of the tire among the plurality of fixing holes.
Therefore, when the fastening jig is attached to the fixing hole, even if a force is applied in a direction that rotates the fastening jig when viewed from the thickness direction of the floor board 3f, it is possible to suppress displacement of the fastening jig by the multiple jig hook portions 62.
As a result, the fastening jig can be stably attached to the fixing hole by the multiple jig hook portions 62 arranged along the width direction of the tire.

(5) The fastening jig further includes a plate-shaped retaining plate 64 attached to the surface of the jig body 61. The retaining plate 64 is formed with a circular retaining hole 64a that overlaps with the hook insertion hole 65 when viewed from the thickness direction of the retaining plate 64 and surrounds the hook insertion hole 65 when viewed from the thickness direction of the retaining plate 64. At least one of the first hook and the second hook includes a circular disk portion that is disposed inside the retaining hole 64a when attached to the hook insertion hole 65.
As a result, when the hook is attached to the hook insertion hole 65, the outer surface of the disc portion faces the inner surface of the retaining hole 64a, so that even if the hook is displaced relative to the fastening jig, the disc portion comes into contact with the inner surface of the retaining hole 64a, making it possible to suppress the displacement of the hook.

(6) The fastening jig further includes a position retaining portion 63 that retains the fastening jig in a state where it is attached to the fixing hole. Moreover, the position retaining portion 63 is disposed in the fixing hole in a state where the fastening jig is attached to the fixing hole.
As a result, when the fastening jig is attached to the fixing hole, the position holding portion 63 makes it possible to maintain the fastening jig in its attached state in the fixing hole, thereby improving the stability of the tire in its fastened state.

(7) At least one of the first hook and the second hook has a retaining portion (retaining portion 25s, retaining portion 26s, retaining portion 51s, retaining portion 52s) that prevents the hook from coming off the fastening jig.
Therefore, when viewed from the thickness direction of the floor board 3f, when the jig main body portion 61 and the anti-slip portion are overlapped, a force is generated that tensions the fastening belt, and even if a force is generated that causes the hook to detach from the fastening jig, the anti-slip portion will come into contact with the jig main body portion 61.
As a result, when the tire is secured in place, the anti-slip portion can prevent the hook from coming off the securing jig.
(8) The spacing between adjacent fixing holes (front fixing hole 70f, rear fixing hole 70r) arranged along the width direction of the tire (front tire Tf, rear tire Tr) is wider than the spacing between adjacent hook insertion holes 65 arranged along the width direction of the tire.
Therefore, after selecting a fixing hole at a position suitable for fastening the tire in the direction along the tire width direction from among the multiple fixing holes, it is possible to select a hook insertion hole 65 at a precise position suitable for fastening the tire in the tire width direction from among the multiple hook insertion holes 65.
As a result, by combining a fixing hole selected from a plurality of fixing holes with a hook insertion hole 65 selected from a plurality of hook insertion holes 65, it is possible to improve the freedom to select the position to fasten the tire.

In addition, a vehicle transporter equipped with the tire fastening device (front tire fastening device 20, rear tire fastening device 30) of the embodiment can achieve the following actions and effects.
(9) The vehicle transporter 1 is equipped with tire fastening devices (front tire fastening device 20, rear tire fastening device 30).
Therefore, by combining a fixing hole selected from the multiple fixing holes arranged on the floor panel 3f with the hook insertion hole 65 formed in the fastening jig, it is possible to improve the freedom of the position for fastening the tire.

As a result, there is no need to form many openings in the floor panel 3f in order to accommodate a wide variety of vehicles with different wheelbases and tire sizes, and there is no need to add a structure to reinforce the floor panel 3f.
Therefore, it is possible to provide a vehicle transporter 1 that is capable of suppressing an increase in weight without reducing the degree of freedom in the positions at which the tires are fastened.

<Modification>
(1) In the embodiment, the tire fastening devices (front tire fastening device 20, rear tire fastening device 30) are provided on the bed 3 of the vehicle transporter 1, but the present invention is not limited to this. That is, for example, the tire fastening device can be applied to various vehicles as long as the tire to be fastened is fastened to the floor plate using a fastener. Therefore, the tire fastening device can be applied to, for example, a ship, an airplane, etc.

(2) In the embodiment, the case where the front fixing hole 70f and the rear fixing hole 70r are formed in the floor plate 3f has been described, but this is not limited to this. That is, for example, only the front fixing hole 70f or only the rear fixing hole 70r may be formed in the floor plate 3f.

(3) In the embodiment, the front fastening jig 60f and the rear fastening jig 60r are attached to the jig bracket 9 attached to the waist board 6, but this is not limited to the configuration. That is, for example, an opening similar to the hook holding hole 95 may be formed in the waist board 6, and the holding pipe part 94 may be fixed to the surface of the waist board 6 facing forward. Note that the waist board 6 can be replaced by removing the bolts, so that the waist board 6 with the jig bracket 9 attached and the waist board 6 without the jig bracket 9 attached can be replaced as necessary.

(4) In the embodiment, the front tire fastening device 20 is configured to include a tire stopper block 23, but this is not limited to this, and the front tire fastening device 20 may be configured not to include a tire stopper block 23.
(5) In the embodiment, the structure provided on the fastening jig for attaching the tack belts to multiple positions along the width direction of the tire is the multiple hook insertion holes 65, but this is not limited to this. In other words, the structure provided on the fastening jig for attaching the tack belts to multiple positions along the width direction of the tire may be a structure that uses magnetic force, for example, to enable the first hook and the second hook to be attached to the fastening jig.
(6) In the embodiment, the jig bracket 9 is configured to include a frame portion 93 and two holding pipe portions 94, but is not limited to this. That is, the jig bracket 9 may be configured to include a frame portion 93, one holding plate portion 95, and one holding pipe portion 94, for example, as shown in Fig. 17 to Fig. 19. Fig. 17(b) is a view taken along line B in Fig. 17(a). Fig. 18(b) is a view taken along line B in Fig. 18(a).
One holding plate portion 95 is disposed below the uppermost hook holding hole 95 of a set of hook holding holes 95 .
The holding plate 95 is formed by bending a rectangular plate material at two points parallel to the long side. The short sides of the plate material forming the holding plate 95 are fixed to the opposing surfaces of the two flanges 93b.
The holding plate portion 95 has a first holding portion 95a, a second holding portion 95b, and an inclined end portion 95c, which are formed by bending a plate material at two locations.
The first retaining portion 95a faces the hook base 62a when the fastening jig (the front tire fastening device 20, the rear tire fastening device 30) is attached to the jig bracket 9.
The second holding portion 95b is bent at an angle of approximately 90° with respect to the first holding portion 95a, and faces the hook hanging portion 62b when the fastening jig is attached to the jig bracket 9.
The inclined end portion 95c is bent at an angle greater than 90° relative to the second retaining portion 95b, and is inclined downward as it approaches the waist board 6 from the mounting plate portion 93a.
One holding pipe portion 94 is disposed below the hook holding hole 95 that is arranged on the lower side of a pair of hook holding holes 95 .
The position at which one holding pipe portion 94 is fixed to the flange portion 93b is a position where a gap is formed between the holding pipe portion 94 and the waist board 6 in which the jig hook portion 62 can be positioned.
(7) In the embodiment, the jig bracket 9 is configured such that three sets of hook holding holes 95 are formed in the mounting plate portion 93a, and one front fastening jig 60f and two rear fastening jig 60r are attached to one jig bracket 9. However, the configuration of the jig bracket 9 is not limited to this. That is, for example, the jig bracket 9 may be configured such that four sets of hook holding holes 95 are formed in the mounting plate portion 93a, as shown in FIG. 17(a), and two front fastening jig 60f and two rear fastening jig 60r are attached to one jig bracket 9.
(8) In the embodiment, the jig bracket 9 is configured such that a portion of the frame portion 93 is fixed to the wainscot 6 by welding or the like, but this is not limited to this. That is, the jig bracket 9 may be configured such that a portion of the frame portion 93 is fixed to the wainscot (not shown) by using a bolt (not shown) and a nut 96, for example, as shown in Figures 17 and 18 .
Specifically, the frame portion 93 has a mounting plate portion 93a, two flange portions 93b, and two bracket flat plate portions 93c.
The two bracket flat plate portions 93c are each formed in a rectangular flat plate shape. The thickness direction of the bracket flat plate portion 93c is parallel to the thickness direction of the wainscot 6.
One of the long sides of the bracket flat plate portion 93c is continuous with the end of the flange portion 93b opposite to the end that is continuous with the mounting plate portion 93a. The other of the long sides of the flange portion 93b is fixed to the waist board 6 by welding or the like.
Furthermore, the bracket flat plate portion 93c is formed with two bolt holes (not shown) for inserting bolts.

REFERENCE SIGNS LIST 1 Vehicle transporter 2 Chassis frame 3 Loading platform 3f Floor board 4 Rear gate 5 Torii frame 6 Wainboard 7 Mirror board 8 Loading platform lifting device 9 Jig bracket 10 Cross frame 11 Fastening ring 20 Front tire fastening device (tire fastening device)
21 towing device 22 front securing belt 23 tire stop block 25 front first hook 26 front second hook 27 front fastener 30 rear tire securing device (tire securing device)
Description of Reference Signs 31 rear fastening device 32 rear fastening belt 51 rear first hook 52 rear second hook 60f front fastening jig 60r rear fastening jig 61 jig main body portion 62 jig hook portion 62a hook base portion 62b hook hanging portion 63 position holding portion 64 holding plate portion 65 hook insertion hole 66 bracket portion 67 cylinder portion 68 rod portion 69 coil spring 70f front fixing hole 70r rear fixing hole 80f front reinforcing member V loaded vehicle Tf front tire Tr rear tire

Claims (9)

A tire fastening device for fastening a tire to a floor plate using a fastener,
a plurality of fixing holes are formed in an area of the floor plate where the tire is placed, the fixing holes being arranged in a direction along the width direction of the tire and a direction along a direction perpendicular to the width direction; and a pair of fastening jigs are attached to each of the two fixing holes arranged at a distance from each other in the direction perpendicular to the width direction and fasten the tire together with a fastening belt, and each of the fastening jigs is provided with a structure for attaching the fastening belt at a plurality of positions along the width direction of the tire,
A reinforcing member is attached to the rear surface of the floor plate near the fixing hole so that the portion of the floor plate where the fixing hole is formed can withstand the force acting on the floor plate when the tire is fastened,
The fastening jig is
a structure for attaching the fastening belt is provided on the front side, and the back side includes a jig main body portion that faces a surface of the floor plate on which the tire is placed when the fastening jig is attached to the fixing hole, and a jig hook portion that faces a surface of the floor plate opposite to the surface that faces the jig main body when the fastening jig is attached to the fixing hole,
A tire fastening device in which, with the fastening jig attached to the fixing hole, the floor plate and the reinforcing member are disposed between the jig main body portion and the jig hook portion. A tire fastening device for fastening a tire to a floor plate using a fastener,
A plurality of fixing holes formed in the floor plate;
A pair of fastening jigs that can be attached to the fixing holes;
a fastening belt having one end connected to one of the set of fastening tools and the other end connected to the fastener via the other of the set of fastening tools with a portion between both ends in contact with the outer circumferential surface of the tire;
The plurality of fixing holes are arranged in a region of the floor panel where the tire is placed, and are arranged in a direction along a width direction of the tire and a direction along a direction perpendicular to the width direction,
The lashing belt includes a first hook attached to the one end and a second hook attached to the lashing belt so as to be movable between the two ends along the length direction of the lashing belt,
The fastening jig is formed with a plurality of hook insertion holes into which the first hook or the second hook can be attached,
the plurality of hook insertion holes are arranged along the width direction of the tire in a state in which the fastening jig is attached to the fixing hole,
A reinforcing member is attached to the rear surface of the floor plate near the fixing hole so that the portion of the floor plate where the fixing hole is formed can withstand the force acting on the floor plate when the tire is fastened,
The fastening jig is
a jig body portion having a front side formed with the hook insertion hole and a back side facing a surface of the floor plate on which the tire is placed when the fastening jig is attached to the fixing hole, and a jig hook portion facing a surface of the floor plate opposite to the surface facing the jig body portion when the fastening jig is attached to the fixing hole,
A tire fastening device in which, with the fastening jig attached to the fixing hole, the floor plate and the reinforcing member are disposed between the jig main body portion and the jig hook portion. The tire fastening device according to claim 2, which is capable of changing between a fixed state in which the floor plate is disposed between the jig main body part and the jig hook part, and a detached state in which the floor plate is not disposed between the jig main body part and the jig hook part, by moving the jig hook part along the width direction of the tire while inserted into the fixing hole. The fastening jig includes a plurality of the jig hook portions,
A tire fastening device as described in claim 3, wherein the plurality of jig hook portions are inserted into a plurality of fixing holes arranged along the width direction of the tire among the plurality of fixing holes while being arranged along the width direction of the tire. The fastening jig further includes a plate-shaped holding plate portion attached to the front side,
The retaining plate portion has a circular retaining hole that overlaps with the hook insertion hole when viewed in a thickness direction of the retaining plate portion and surrounds the hook insertion hole when viewed in the thickness direction of the retaining plate portion,
A tire securing device as described in claim 3 or claim 4, wherein at least one of the first hook and the second hook has a circular disk portion that is positioned inside the retaining hole when attached to the hook insertion hole. The fastening jig further includes a position retaining portion for retaining the fixed state,
The tire fastening device according to claim 3 , wherein the position maintaining portion is disposed in the fixing hole in the fixed state. A tire fastening device according to any one of claims 2 to 6, in which at least one of the first hook and the second hook is provided with a retaining portion that prevents the at least one hook from coming off the fastening jig when the at least one hook is attached to the hook insertion hole and the width direction of the fastening belt is oriented parallel to the width direction of the tire. A tire fastening device according to any one of claims 2 to 7, in which the spacing between adjacent fixing holes arranged along the width direction of the tire is wider than the spacing between adjacent hook insertion holes arranged along the width direction of the tire. A vehicle transporter equipped with a tire fastening device according to any one of claims 1 to 8.

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