JPH0316784Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to the structure of a seat support portion of a traveling vehicle such as a forklift or a tractor, which has reinforcing frames on the left and right sides of the traveling vehicle body.

(Prior Art) For example, a traveling vehicle such as a forklift or a tractor has a vehicle body by directly connecting an engine, a transmission case, an axle frame, etc., and a lift device or agricultural machine is attached to the front or rear of the vehicle body. When installing equipment that is subject to heavy loads such as motor vehicles, the vehicle body may break due to excessive bending moment.

In order to prevent this, it is necessary to increase the strength of the vehicle body by connecting reinforcing frames to the left and right sides of the vehicle body, and a prior art technique for this purpose is disclosed in Japanese Patent Laid-Open No. 48-49118.

In the prior art, the front and rear ends of the left and right reinforcing frames are connected to each other, and a weight is attached to the front connection part and a heavy work machine is attached to the rear connection part.

(Problems to be Solved by the Invention) Although the reinforcing frame of the prior art reinforces the vehicle body, it does not involve the attachment of components of the running vehicle, such as seats and tool boxes, and its use is limited. The degree is low. In addition, since the left and right reinforcing frames do not have any members that connect to each other midway in the longitudinal direction, the load applied to one of the reinforcing frames is transmitted to the vehicle body,
This reduces the reinforcing effect.

(Means for Solving the Problems) The present invention connects the reinforcing frames 26 connected to the left and right sides of the vehicle body 5 with an intermediate connecting body 30 that crosses above the vehicle body 5 at a midway point in the longitudinal direction.
The seat 21 is supported on the top and the article storage section 59b
By installing a box 59 having a shape, the problems of the prior art described above can be solved.

That is, the specific structure of the problem-solving means of the present invention is characterized by connecting the reinforcing frames 26 of substantially the entire length to the left and right sides of the running vehicle body 5, and running on the middle part of the left and right reinforcing frames 26. car body 5
The boxes are connected by an intermediate connecting body 30 that crosses above, a floor sheet 51 is placed on the upper part of this intermediate connecting body 30, a seat 21 is supported on this floor sheet 51, and the inside is an article storage section 59b. 5
The structure of the seat support part of a traveling vehicle is such that two intermediate connectors 30 are provided, and the box 59 has a plate member 59a having an inverted U-shaped cross section with open sides, and the front and rear legs of this plate member 59a are This is because the floor sheet 51 and the floor sheet 51 are fastened to the two intermediate connecting bodies 30.

(Function) A pair of reinforcing frames 2 arranged on the left and right sides of the vehicle body 5
6 are connected to each other at the front and back, and are also connected to each other at a midway portion by a midway connector 30, so that the load applied to one can be transmitted to the other,
A box 59 that can store goods and a seat 21 are attached to the intermediate connector 30, and the reinforcing frame 26 is
The box 59 is effectively used for attaching vehicle components, the box 59 mutually reinforces the intermediate connector 30, and an article storage section 59b is formed at the position closest to the seat 21.
A plate material 59a having an inverted U-shaped cross section with open sides forming the box 59 has front and rear legs fixed together with the floor sheet 51 to two intermediate connecting bodies 30, and a framework consisting of left and right reinforcing frames 26, intermediate connecting bodies 30, etc. This prevents the floor sheet 51 from deforming into a diamond shape.
The bottom plate of the box 59 can be omitted.

(Example) Hereinafter, an example of the present invention will be described based on the drawings. In Figures 1 to 5, 1 is a cargo handling vehicle with a lift device 3 attached to the front of a traveling vehicle 2, and the lift device 3 has a working tool such as a fork 4 or a bucket, and is mainly used on rough terrain. Ru.

The traveling vehicle 2 is formed by a vehicle body 5 directly connecting an engine 6, a clutch housing, and a transmission case 7, and a pair of left and right axle frames 8 protruding rearward from the engine 6. A rear weight 9 that also serves as a grill is fixed.

A radiator 11, a battery 12, etc. are mounted on the axle frame 8, and a power steering cylinder 13 is arranged inside the axle frame 8. Also, a rear wheel differential device and a rear axle case (both not shown) are mounted on the axle frame 8. Rear wheels 14 that can be steered via, etc.
is supported.

A front wheel 17 is supported on both sides of the front portion of the transmission case 7 via a brake case 15, a front axle case 16, and the like.

Fuel tank 1 is located above the front of transmission case 7.
The fuel tank 18, engine 6, radiator 11, battery 12, air cleaner 20, etc. are covered by a bonnet 19, and a seat 21 is arranged in front of the bonnet 19. There is a handle device 22 on the front upper part.
is located.

Reference numeral 26 denotes reinforcing frames disposed on the left and right sides of the vehicle body 5, which run along approximately the entire length of the vehicle body 5 in the longitudinal direction. They are connected to each other and to the vehicle body 5 via the front connecting body 28, the rear end is bolted to the rear weight 9, and the middle part in the longitudinal direction is connected to the vehicle body 5 via the left and right brackets 29. , further, the intermediate portions are connected to each other by a connecting body 30 or the like. Intermediate connector 3
Two 0s are arranged across the top of the vehicle body 5 and can be placed on the vehicle body 5.

The left and right reinforcing frames 26 each have a bracket 29.
It is divided into two parts in the front and back near where it is provided, and flanges 26a and 26b are formed at each divided end,
They are connected via bolts 32, making it easy to attach and detach the reinforcing frame 26 and to assemble and disassemble the vehicle body.

Portal frames 33 and 34 are fixed to the front and middle portions of both reinforcing frames 26. Front gate frame 3
The left and right columns 34A and the top member 34B of No. 4 are formed of square pipes, and the legs of each column 34A are welded or bolted to the outer surface of the reinforcing frame 26.
A flange portion 34C is provided at the upper end of the left and right struts 34A.

A support plate 35 is fixed to the top member 34B of the front gate frame 34, and a handle post 36 of the handle device 22 is supported on this support plate 35. Further, a plurality of (three in the embodiment) lift operation levers 38 are pivotally supported on the top member 34B via a support base 37, and these lift operation levers 38 operate the tilt operation of the lift device 3 and the fork 4. It performs operations such as raising and lowering and moving the fork 4 left and right, and is connected to a control valve 40 via a rod 39. Note that the control valve 40 is attached to the front connecting body 28.

A front cover 41 shields the front of the seat 21 from the top member 34B to the front connector 27, covers the upper surface of the support plate 35, and also covers the lift operation lever 38.
A lever guide 42 is formed.

44 is a safety frame that protects the seat 21, and a ceiling frame 47 is attached to the upper ends of the four front and rear columns 45, 46.
It is formed by fixing it. A flange portion 45a is formed at the lower end of the front column 45, and the front portal frame 3
It is bolted to the No. 4 pillar 34A. That is,
The support column 34A serves as a support for the safety frame 44.

Flange portions 34 of the left and right pillars 34A, 45
C, 45a are connected by four bolts 48, two bolts are used to fasten the front cover 41 which is in contact with the inner lower surface of the flange portion 34C, and the other two bolts are connected to the flange portion 34C. A fender 49 that comes into contact with the outer lower surface of the belt is fastened together. As a result, the fender 49 has less vibration.

Reference numeral 51 designates a floor sheet disposed astride the mission case 7 and the left and right reinforcing frames 26, and its side portions are also connected to the left and right fenders 49. 5
Reference numeral 2 denotes a pair of left and right steps, which are located at the rear of the fender 49.

An operation panel 5 is located between the seat 21 and the right fender 49.
3 is placed. This operation panel 53 is fixed on the floor seat 51, but the right step 52
It may also be provided above like a door that can be opened and closed.
On the operation panel 53, a main shift lever 54, an auxiliary shift lever 55, a forward/reverse switching lever 55, etc. are arranged, and an easy checker 57, meters, and various switches are also arranged.

The gear shift levers 54, 55, 56, etc. can be placed side by side with the lift operating lever 38, etc., but they are not used during work and obstruct the front and downward visibility, and they are easier to operate on the sides of the seat 21. be. Further, by arranging the operation panel 53 on the side of the seat 21 in this way, the vicinity of the handle device 22 can be simplified, and the height of the upper surface of the front cover 41 can be lowered. In the example, as shown in FIG.
The height of the upper surface of the front cover 41 is made substantially flush with the upper surface of the fender 51, so that the front downward field of view is sufficiently wide.

The seat 21 is arranged on a box 59 provided on the floor seat 51. The floor sheet 51 is provided on the front and middle connecting bodies 27 and 30 that are constructed on the reinforcing frame 26, and a plate material 59a bent to have an inverted U-shaped cross section is fixed on the two middle connecting bodies 30A and 30B. A box 59 is formed by the plate material 59a and the floor sheet 51, and the seat 21 is mounted on the box 59 via a mounting device 60 which can freely adjust the height and longitudinal position of the seat. One side of the box 59 is closed by the operation panel 53, and the other side has a lid 61 that can be opened and closed via a pivot 77, and the inside thereof is an article storage section 59b in which tools and small items can be stored. The front and rear legs of the plate material 59a of the box 59 are connected to each intermediate connecting body 30A, 30B.
It is fastened together with the floor sheet 51 via bolts 78. The plate material 59a of the box 59 may be formed by covering the outside of a plurality of strip plates that are inverted U-shaped in side view with a sheet metal, and may have legs at the front and rear and one side surface is open. 58 is a parking brake lever mounted on box 59.

The midway gate-shaped frame 33 has left and right supports 33A and a top member 33.
The left and right columns 33A are made of square pipes, and the flange portions 33a of the legs thereof are bolted to the upper surface of the reinforcing frame 26. The upper ends of the left and right columns 33A are square tubes, and the rear columns 4 of the safety frame 44
The lower end insertion portion 46a of 6 is freely insertable,
The safety frame 44 is attached to the midway portal frame 33 by inserting the insertion portion 46a into the upper end of the support column 33A and passing the bolt 61 (or pin) through it. Since the safety frame 44 has front and rear struts 45 and 46 that can be attached to and detached from the front and middle portal frames 34 and 33, the structure is simple and can be easily attached and detached.

Although the top member 33B can be formed from a square pipe, it is formed to have a cross section (inverted U-shape), and both ends of the top member 33B are welded to the left and right support columns 33A, and the top member 33B extends slightly forward and downward to form a mounting portion 33b. It has become,
A shielding plate 62 that covers the front of the engine 6 is fixed between the mounting portion 33b and the vehicle body 5, and partitions the engine 6 and the fuel tank 18. 6
3 is fixed. The lower part of the fuel tank 18 is fixed to the reinforcing frame 26 via a lower bracket 64.

The bonnet 19 is divided into two parts, front and rear, with the portal frame 33 as a border.
The upper surfaces of F and 19R are approximately flush with the upper surface of the top member 33B, but the left and right side walls 19a of the front bonnet 19F are approximately flush with the outer surfaces of the left and right struts 33A, and the left and right side walls 19b of the rear bonnet 19R are flush with each other. are in contact with the inner surfaces of the left and right columns 33A, or the inner surfaces thereof are substantially flush with each other.

The front bonnet 19F is attached to the left and right columns 33A through tongue pieces 65, etc., and the front upper part of the rear bonnet 19R is attached to the rear part of the top member 33B with a pivot 65.
7, and the lower part is removably fixed to the vehicle body 5, reinforcing frame 26, etc. A rear wheel fender 66 is connected to the reinforcing frame 26, the rear bonnet 19R, the left and right steps 52, and the like.

At the front of the traveling vehicle 2, reference numeral 68 denotes a pair of left and right support stands that are simultaneously connected to the reinforcing frame 26 and the axle frame 8, and pivotally support the fixed mast 70 of the lift device 3 via a horizontal shaft 69. , 71 are a pair of left and right tilt cylinders that are pivotally supported by the reinforcing frame 26, and their rod tips are connected to the fixed mast 70, allowing the fixed mast 70 to be tilted. In addition, the lift device 3 is a fixed mast 7
0 has a lifting mast 72, and this lifting mast 7
2 has a lifting platform 73 that supports the fork 4,
The fork 4 can be freely adjusted in left and right positions with respect to the lifting table 73 by a cylinder 74.

In the embodiment described above, the framework of the traveling vehicle 2 is formed by the left and right reinforcing frames 26, the front gate frame 34, the midway gate frame 33, and the like. Although the traveling vehicle 2 is a dedicated lift machine, it may also be an agricultural machine or a tractor equipped with a front loader or the like.

(Effect of the invention) According to the invention described in detail above, the pair of reinforcing frames 26 arranged on the left and right sides of the vehicle body 5 are connected to each other at their midpoints by the midway connecting body 30, so that one of the reinforcing frames The load applied to 26 is transmitted to the other side, further enhancing the car body reinforcing effect.Since the box 59 is provided on this intermediate connection body 30, they can mutually reinforce each other, and this box 59 It also serves as a mounting base for the seat 21, and an article storage section 59b for tools and the like can be formed at the position closest to the seat 21. Furthermore, since the reinforcing frame 26 supports vehicle components such as the box 59 and the seat 21 via the intermediate connector 30, the reinforcing frame 26 can be used effectively. In particular, since two intermediate connectors 30 are provided and connected by the plate material 59a of the box 59, the framework consisting of the left and right reinforcing frames 26, the two intermediate connectors 30, etc. is prevented from deforming into a diamond shape. Since the floor sheet 51 is fixed to the intermediate connecting body 30 together with the front and rear legs of the plate material 59a, installation of the floor sheet 51 can be simplified, and the bottom wall of the box 59 can be prevented by the floor sheet 51. Since it is formed in this way, it is possible to omit the provision of a separate bottom plate, and since the sides are open, it is possible to store and take out articles extremely easily.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a partially sectional side view, Fig. 2 is a plan view, Fig. 3 is a front view, Fig. 4 is a sectional side view of main parts, and Fig. 5. 1 is a sectional view taken along the - line in FIG. 1. 1... Cargo handling vehicle, 2... Traveling vehicle, 5... Vehicle body, 21... Seat, 26... Reinforcement frame, 30
...Midway connecting body, 33...Midway gate frame, 34...
Front portal frame, 59... Box, 59b... Article storage section, 60... Seat attachment device, 61... Opening/closing lid.

Claims (1)

[Scope of Claim for Utility Model Registration] A reinforcing frame 26 having a length extending substantially over the entire length is connected to the left and right sides of the traveling vehicle body 5, and the left and right reinforcing frames 26
The midway portions are connected by a midway connector 30 that crosses above the traveling vehicle body 5, a floor sheet 51 is placed on top of this midway connector 30, the seat 21 is supported on the floor sheet 51, and the interior is designed to hold articles. Storage section 59b
This is a structure of a seat support part of a traveling vehicle in which a box 59 is arranged, in which two intermediate connectors 30 are provided, and the box 59 has a plate member 59a having an inverted U-shaped cross section with open sides. The structure of the seat support portion of a traveling vehicle is characterized in that the front and rear legs 59a are fastened together with the floor seat 51 to two intermediate connectors 30.