JP2005170559A - Lever type winding and load bundling device using belt - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To omit the use of a chain which possibly damages a load, and to eliminate possibility of load shift even when the force is released collectively. <P>SOLUTION: A winding shaft 2 which has a groove part 3 penetrated in the diameter direction to pass a belt V and held by a pair of side plates 4 and 5, a driving shaft 1 integrally connected to the winding shaft 2 protruded from the side plates 4 and 5, and a driving unit mainly consisting of a brake mechanism 13, a pushing member 14 and an operation handle 15 provided on the driving shaft 1 are provided. An operation lever 21 is engaged with the driving unit. The reciprocating operation of the operation lever 21 is transmitted to the winding shaft 2 via the pushing member 14 and a bearing member 7 to the forward direction and the reverse direction in a changing manner, and the operation lever can be changed in a neutral position. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

The present invention relates to a lever-type hoisting and loading device using a belt, and more specifically, a winding shaft is rotated by a reciprocating movement of an operation lever, and a belt wound around the winding shaft is wound up or down. For example, in addition to winding and unloading the luggage, for example, fixing the luggage loaded on the truck to the loading platform by tightening this belt (clamping),
The present invention relates to a lever-type hoisting and load-clamping device using a completely new belt that does not exist in the past, and is also used for winding around wooden boxes, wood, steel pipes, and the like.

Conventionally, there is a so-called chain lever hoist for rotating a wheel by reciprocating movement of an operation lever and winding and lowering a chain wound around the wheel. Also,
There is a so-called belt lashing, that is, a load-clamping device using a belt, for fixing a load loaded on a truck to a loading platform or winding around a wooden box, wood, a steel pipe or the like.

Needless to say, the chain lever hoist has a JIS standard and is widely used in fields such as architecture and logistics. Used to hang things or to fix things with chains. This chain lever hoist is a kind of machine.
Actually, the force applied by humans is small. The load can be increased or decreased freely,
It also has a brake function.

Although belt lashing does not have a JIS standard, it is mainly used to fix the load of a truck using a fiber belt, and is not suitable for an operation of hanging an object. This belt lashing is made of a simple fastener for a fiber belt, and is lighter and less expensive than an all-metal chain lever hoist. Since a fiber belt is used, there is almost no fear of damaging the load even when the load of the truck is fixed, for example.
JP 2002-249298 A JP-A-9-99775

By the way, since the chain lever hoist is used to fix an object, there is a high risk of damaging the chain when it hits the object. Cost. Moreover, it is generally expensive.

In addition, belt lashing requires a large force when tightening, and is very labor-intensive compared to using a chain lever hoist. The fastener works stepwise only in the direction in which the force is applied, but cannot be controlled in the direction in which the force is weakened, so the force can only be relaxed at once. In other words, for example, when fixing the load of a truck, even if you think that the load has been tightened too much and try to loosen the force a little, the load is released at once, so there is a risk of collapse of the load This method is not adopted because it is very dangerous.

In light of such a current situation, the present inventor noticed that each of the chain lever hoist and the belt lashing has been adopted only in a usage manner specialized in the past, and captured the advantages of each other. We sought to develop products that could be eliminated as much as possible. As a result of repeated examinations and experiments, it is possible to handle both hanging work and fixing work, there is no risk of damaging the load, it can be tightened and loosened freely, and less human power is required. We have developed a completely new device that does not release and cause the collapse of cargo, and we will provide it here.

Accordingly, an object of the present invention is to eliminate the use of a chain that damages a load and to eliminate the possibility of causing collapse of the load even when the force is released at once.

The lever type hoisting and loading device using the belt according to the present invention is basically characterized in that the above technical problem is solved by applying the chain lever hoist drive mechanism to belt lashing. There is.

Therefore, the invention described in claim 1 embodies this basic concept, has a groove portion that penetrates the belt in the diametrical direction and is inserted and held between a pair of side plates. A winding shaft, a driving shaft integrally connected to the winding shaft protruding from one side plate, a pressure receiving member provided to be rotatable integrally with the driving shaft, a brake plate provided on the pressure receiving member, and a brake plate on both sides And a brake mechanism provided on the outside of the anti-reverse wheel, and provided with an anti-reverse pawl that engages with the meshing teeth of the anti-reverse wheel, and the anti-reverse wheel A pressing drive member that is held so as to be able to advance and retreat on the drive shaft on the outer side in the axial direction and presses the pressure receiving member via a brake plate and a reverse rotation prevention wheel, and a switching claw that meshes with an engagement gear of the pressing drive member. Have this An operating lever that drives the pressing drive member in a predetermined direction via a claw, an operating member that is inserted through the outer end of the driving shaft and is attached to the pressing drive member so as not to be relatively rotatable, and the pressing drive member And an urging unit that urges the anti-reverse wheel to move away from the reverse rotation prevention wheel.

According to such a configuration, the drive shaft that protrudes from the take-up shaft provided with the groove portion through which the belt is inserted is provided with the brake mechanism, the drive portion mainly including the pressing drive member and the operation member, and the operation lever is provided on the drive portion. At the same time, the switching lever provided on the operation lever causes the reciprocating swinging operation of the operation lever to move to the winding shaft via the pressing drive member and the pressure receiving member, and to the forward rotation direction and the reverse rotation direction. Can also be switched, and at the same time can be switched to neutral. Therefore, unlike the conventional belt lash, the belt can be freely wound and rewound. Further, the winding state is maintained by the operation of the brake mechanism, specifically, the engagement of the reverse rotation prevention pawl with the reverse rotation prevention wheel. Furthermore, since no-load condition can also appear, for example, when you want to adjust the belt length at the start of work etc., manually rotate the operating member freely in the forward / reverse direction to rotate the winding shaft. The belt can be rotated in an unloaded state, and the belt can be easily wound and rewinded.

Therefore, this invention has the following effects.
The belt can be wound and unwound freely, so that the main function of the chain hoist is to suspend the luggage and the main function of the belt lashing is to fix the luggage (clamping or tightening).
It can be applied to both work, its application range is greatly expanded, and the utility value is great. Also,
Since a belt is used, for example, there is no risk of inadvertently damaging a load compared to a chain hoist using a chain. Since the brake mechanism is provided, the load can be gradually reduced. The winding force is not released all at once, and there is no possibility of collapsing the load like belt lashing, and the work can be performed safely. After the belt is rewound and the load is released, the belt can be easily removed by simply pulling the belt out of the groove.

In the present invention, as described in claim 2, it is desirable to use a belt sling in which polyarylate fibers are included in the belt.
Because polyarylate fiber is used, it has great resistance to load, and the width and thickness of the belt that can handle the same load are much shorter and thinner than ordinary fiber belts. You can adopt things. Therefore, this apparatus can also be compactly integrated, which greatly contributes to cost reduction.

In addition, as described in claim 3, it is desirable that the pressure receiving member is splined to the drive shaft.
The original effect of the present invention can be achieved even with screw fitting, but when a heavy load is applied to the belt, the female screw of the pressure receiving member tends to bite into the male screw of the drive shaft, and it is disassembled during maintenance repair. In addition, it is difficult to perform subsequent assembly work, and the life of the equipment tends to be shortened.However, with spline fitting, this biting phenomenon does not occur at all, and it is possible to easily disassemble and assemble, and the service life becomes longer. is there.

Furthermore, as described in claim 4, it is desirable that the drive shaft includes a speed reduction mechanism.
This is because even when an excessive load is applied to the belt, the reciprocating operation of the operating lever, that is, the winding of the belt can be easily performed with a light force.

According to a fifth aspect of the present invention, the upper hook support shaft is provided between the upper portions of the pair of side plates, and the upper hook is pivotally supported by being biased toward the operation lever side of the shaft so that the left and right balances are balanced. It is desirable to antagonize.
This is because, when the cargo tightening device is suspended through the upper hook, the device is suspended vertically, so that the operation lever can be easily operated and the belt can be wound up smoothly.

According to the sixth aspect of the present invention, it is desirable that the take-up shaft has a left and right intermediate portion formed larger in diameter than both ends, and has a function of automatically aligning the belt.
This is because it is possible to prevent inconvenience that the belt is biased to either the left or right of the winding shaft during the operation and interferes with the belt winding, and the belt winding becomes much smoother.

As described in claim 7, an auxiliary operation lever is rotatably provided on the side opposite to the operation lever mounting side of the winding shaft, and its free end is connected to the operation lever as a grip portion. It is desirable that they are connected together through pins.
This is because the reciprocating swing operation of the operation lever becomes smoother and is also a preferable means for competing the right and left balance of the apparatus.

By applying the chain lever hoist drive mechanism to belt lashing, we have eliminated the use of chains that damage the load, and at the same time, eliminated the risk of load collapse even if the force is released at once.

FIGS. 1-6 shows the 1st Example of the lever type winding using the belt which concerns on this invention, and a cargo tightening apparatus, and shows the specific example of the form which is not equipped with a gear reduction mechanism.

A winding shaft 2 is integrally formed at one end of the drive shaft 1 (on the right side in FIG. 1). As shown in FIGS. 2 and 3, the winding shaft 2 has a groove portion 3 that penetrates in a diametrical direction through which the fiber belt V is inserted. In the illustrated example, the groove portion 3 penetrates through the central portion of the shaft and is formed over substantially the entire axial length of the winding shaft 2. Further, the small diameter shaft portions 2A on both sides of the winding shaft 2 can be rotated by bearings 6 mounted on a pair of side plates 4 and 5 arranged in parallel.
It is clamped and held (see FIG. 1).

The drive shaft 1 projecting from one side plate 5 is formed integrally with the take-up shaft 2, and in order from the side closer to the side plate 5, the drive shaft 1 is spaced apart from the spline portion 1A and the small-diameter intermediate shaft portion 1B. 1
A screw portion 1C, a small-diameter portion 1D having a smaller diameter than the first screw portion 1C, and a second screw portion having a smaller diameter than the small-diameter portion 1D at the shaft end and formed in a reverse screw with respect to the first screw portion. 1E is formed. In this embodiment, the dimension is set so that the spline portion 1A has the maximum diameter.

As shown in FIGS. 1 and 4, the spline portion 1 </ b> A of the drive shaft 1 receives pressure at a position in contact with the small-diameter shaft portion 2 </ b> A of the take-up shaft 2 protruding from the one side plate 5 toward the drive shaft 1. The member 7 is pivotally supported by spline fitting. The pressure receiving member 7 includes a disk portion 7 on one side plate 5 side.
A and a boss portion 7B projecting from the central portion to the shaft end side of the drive shaft 1 (left side in FIG. 1). A brake plate 8 made of a pair of friction members and an anti-reverse wheel 9 sandwiched between them are externally fitted to the boss portion 7B so as to be freely rotatable.

A claw shaft 10 is provided on one side plate 5, and a reversing prevention claw 11 that meshes with a meshing tooth 9 </ b> A provided on the outer periphery of the reversing prevention wheel 9 is swingably supported on the claw shaft 10. Has been. Further, a claw spring 12 for urging the reverse rotation prevention claw 11 toward the reverse rotation prevention wheel 9 is provided between the reverse rotation prevention claw 11 and the one side plate 5 on the claw shaft 10. The pressure receiving member 7, the brake plate 8, the reverse rotation preventing wheel 9 and the reverse rotation preventing claw 11 constitute a mechanical brake 13 as a brake mechanism. The reverse rotation prevention wheel 9 preferably has a gear structure.

A pressing drive member 14 that is a main part of the drive unit is screwed to the first screw portion 1C of the drive shaft 1 adjacent to the pressure receiving member 7, and can advance and retreat in the axial direction. Further, an engagement gear 14A is provided at a position on the outer peripheral surface of the drive shaft 1 that is close to the shaft end side. And this press drive member 14 is formed in the end part by the side of the said winding shaft 2 by making the inner peripheral part concave, and the outer peripheral side is located in the shaft end side of the drive shaft 1 of the mechanical brake 13 A pressing portion 14 </ b> B for pressing the brake plate 8 is used. The pressing drive member 14 preferably has a gear structure.

Further, on the shaft end side of the drive shaft 1 of the pressing drive member 14, an operation handle 15 as an operation member is screwed to the second screw portion 1 E of the drive shaft 1. The operation handle 15 is composed of a cylindrical gripping portion 15B that protrudes continuously from the outer periphery of the base portion 15A.
The two screws 16 are attached to the pressing drive member 14 so as not to be relatively rotatable.

The operation handle 15 is fixed to the shaft end of the drive shaft 1 by a lock nut 17 screwed into the second screw portion 1E of the drive shaft 1. Screwed in a spaced state. Thus, the axial movement range of the pressing drive member 14 that moves together with the operation handle 15 is restricted.

Further, the end of the operation handle 15 on the axially inner side (right side in FIG. 1), that is, the base 15A.
Includes a spring receiver 15 having a concave inner periphery and an open side of the pressing drive member 14.
C is formed, and a pressing spring 15D as an urging means is loaded in the spring receiver 15C so as to surround the small diameter portion 1D of the drive shaft 1. The pressing spring 15D is connected to the pressing drive member 1
The end on the 4 side abuts on the end on the operation handle 15 side of the first screw portion 1C of the drive shaft 1 and always presses it toward the pressing drive member 14, that is, the mechanical brake 13 side. In other words, the pressing drive member 14 functions so as to be applied to the operating handle 15 so as to separate the pressing drive member 14 from the mechanical brake 13 via the operating handle 15. And this press spring 15D is provided in order to hold | maintain the cancellation | release state of the mechanical brake 13 at the time of idle operation. Therefore, the spring force of the pressing spring 15D causes the mechanical brake 13 to operate when the drive shaft 1 is given rotational driving exceeding the contact resistance with the pressing driving member 14 in the idle state. What has a spring force of the grade which makes the member 14 screw is employ | adopted.

As shown in FIG. 1, a side cover 18 that covers the side of the take-up shaft 2 is attached to the other side plate 4, and a mechanical brake 13 is covered to one side plate 5 and pressed. Brake covers 20 each having an opening 19 (see FIG. 4) for inserting the member 14 are attached.

The operating lever 21 is loosely fitted on the outer periphery of the pressing drive member 14, and the operating lever 21 is separated from the pressing drive member 14 at a predetermined interval in the opening portion 19 of the brake cover 20. It is rotatably supported.

As shown in FIG. 1, the operation lever 21 includes a first cover 21A and a second cover 2 that face each other.
1B is assembled by a plurality of bolts 22, and a switching claw 23 that engages and disengages with the engaging gear 14A of the pressing drive member 14 between the first cover 21A and the second cover 21B is provided on the head. Is pivotably attached by a shaft 25 having a switching lever 24. Further, the switching claw 23 is provided between the first cover 21A and the second cover 21B.
4, a pressing member 26 that presses toward the engaging gear 14 </ b> A, a receiving member 27 that receives the pressing member 26, and a pressure member 26 that is interposed between the pressing member 26 and the receiving member 27.
3 is provided.

As shown in FIG. 5, the switching claw 23 meshes with the engaging gear 14 </ b> A only when the pressing drive member 14 is rotated forward (rotated in the winding direction), and the operation lever 21 is driven by the pressing drive member 14. Only when the forward engaging protrusion 23A and the pressing drive member 14 are reversely rotated (rotated downward), the engaging gear 14A is engaged, and the drive of the operating lever 21 is transmitted to the pressing drive member 14. And a reverse meshing protrusion 23B. Then, by operating the switching lever 24, the switching claw 23 is moved in the forward meshing projection 23 with respect to the engaging gear 14 </ b> A of the pressing drive member 14.
A forward rotation position that meshes with A and transmits only the forward rotation drive of the operation lever 24, and the reverse engagement protrusion 23
It is possible to switch to a reverse position that meshes with B and transmits only the reverse drive, and a neutral position where the switching claw 23 and the engagement gear 14A do not mesh.

The one side plate 5 and the other side plate 4 are fixed together with the side cover 18 and the brake cover 20 by an upper stay bolt 29 (see FIG. 5) and a lower stay bolt 30 (see FIGS. 1 and 4). .

Moreover, as shown in FIG. 1, the upper hook spindle 31 is spanned over the both side plates 4 and 5 over the both side plates. An upper hook support member 3 is provided at an intermediate portion of the upper hook support shaft 31.
2 is pivotally supported. The upper hook support member 32 is engaged with a locking shaft portion 33A that is integrally attached to the lower end of the upper hook 33 so as to be rotatable about the longitudinal axis. In addition, on the upper hook support shaft 31, cylindrical spacing holders 35 are externally fitted on both sides of the upper hook support member 32.

The claw shaft 10 extends to the other side plate 4 and is fixed by a bolt 34 together with the side cover 18 outside the other side plate 4. Therefore, this claw shaft 10
Also has a function as a spacer between the side plates 4 and 5 and a reinforcing member. There is an advantage that the strength of the device can be increased to more fully cope with a large load.
The claw shaft 10 protrudes from only one side plate 5 without using both a spacer and a reinforcing member as in the structure shown in the figure, and is provided as a dedicated part for supporting the reverse rotation prevention claw 11. Also good.

In FIG. 1, the belt V indicated by an imaginary line is made of a thick and durable cloth, but if necessary, a polyarylate fiber [for example, “Vectran” (registered by Kuraray) (registered) A belt sling including a trade name)] can be employed. Because polyarylate fiber is used, it has great resistance to load, and the width and thickness of the belt that can handle the same load are much shorter and thinner than ordinary fiber belts. You can adopt things. Therefore, this apparatus can also be gathered compactly and contributes greatly to cost reduction.

In addition, the belt V is folded at one end of the belt V and sewn (forms an eye).
A lower hook 38 is provided via an attached hanging metal fitting 36 and a lower hook supporting member 37 attached to the hanging metal fitting 36 and having the same structure as the upper hook supporting member 32. The lower hook 38 is supported by the lower hook support member 37 so as to be rotatable about the longitudinal axis.

Next, the operation of the lever-type hoisting using the belt having the configuration shown in the first embodiment and the operation of the cargo tightening device will be described.
First, the case where the load hung on the lower hook 38 provided at the tip of the load side (loading side) of the belt V is wound up and down will be described.
When winding a load, first, the free end side of the belt V inserted through the groove portion 3 of the take-up shaft 2 is pulled up so that the belt portion V1 between the load and the take-up shaft 2 is loosened as much as possible. Keep it small (see FIG. 6A). Next, by operating the switching lever 24, the switching claw 23 is positioned at the normal rotation position, and then the operating lever 21 is reciprocated. By this operation, the drive member 14 is driven by the drive lever 14 to screw on the drive shaft 1 to press the brake plate 8 (on the press drive member 14 side) of the mechanical brake 13. As a result, the drive shaft 1 is intermittently driven in the forward rotation direction via the pressure receiving member 7 that is coupled to the drive shaft 1 so as not to be relatively rotatable. The rotation of the drive shaft 1 directly rotates the winding shaft 2 in the normal rotation direction. At this time, the belt portion V1 between the load of the belt V and the take-up shaft 2 is superimposed on the unloaded side V2 initially taken up by the take-up shaft 1, as shown in FIG. The belt V is prevented from slipping in consideration of the frictional resistance. By continuously reciprocating the operating lever 21, the belt V is further wound up, and finally, as shown in FIG. The wound state is maintained by the operation of the mechanical brake 13, that is, the meshing of the reverse rotation prevention pawl 11 with the reverse rotation prevention wheel 9.

Next, when unloading the load, first, by operating the switching lever 24, the switching claw 23 is positioned at the reverse rotation position, and then the operation lever 21 is reciprocated. With this operation, the drive from the operation lever 21 causes the press drive member 14 to be screwed over the drive shaft 1 to release the press of the press drive member 14 against the mechanical brake 13. As a result, mechanical brake 13
Is released, the drive shaft 1 can freely rotate, is rotated in the reverse rotation direction by the weight of the load, and the load is lowered. However, due to the rotation of the drive shaft 1 in the reverse direction, the drive shaft 1
Since the pressing drive member 14 screwed to the screw again rotates on the drive shaft 1 and presses the brake plate 8, the mechanical brake 13 is actuated again, and the rotation of the drive shaft 1 in the reverse direction is prevented. The Thus, when unloading the load, the release and operation of the mechanical brake 13 are repeated, and the winding shaft 2 is gradually rotated in the lowering direction, whereby the load is unloaded.

Further, when it is desired to adjust the length of the belt V at the start of work, the switching claw 23 is positioned at the neutral position by operating the switching lever 24, and in some cases, the unloaded side V2 of the belt V is pulled. Alternatively, if the operation handle 15 is rotated in the reverse rotation direction, the idle state is entered as it is. That is, when the belt V is not loaded and the switching claw 23 and the engagement gear 14A of the pressing drive member 14 do not mesh with each other, the driving force of the mechanical brake 13 against the brake plate 8 is driven by the spring force of the pressing spring 15D. Since the pressing of the member 14 is released and the pressing drive member 14 and the drive shaft 1 can rotate, the idle state is maintained. In a state where a load is applied to the belt V on the load side, that is, in a state where a load is suspended from the lower hook 38, a large thrust is applied to the drive shaft 1 due to the gravity of the load. Even when 23 is in the neutral position, the pressing drive member 14 presses the brake plate 8 of the mechanical brake 13 against the spring force of the pressing spring 15D, so that it does not enter the idle state. Further, in the idle state, when the belt V on the load side is pulled abruptly and a rotational drive exceeding the contact resistance with the pressing drive member 14 is given to the drive shaft 1, the mechanical force is resisted against the spring force of the pressing spring 15D. Since the brake 13 operates, in such a case, the idle state is released and safety is ensured.

Next, for example, an operation for fixing or loosening a load loaded on a truck bed will be described.
In order to fix the luggage, first, the upper hook 33 is locked in advance on an appropriate engagement hook of the cargo bed directly or via another connector. Next, the lower hook 38 is locked to the engaging hook on the opposite side of the loading platform directly or via another connector, and the belt V is placed on the load while the front side of the loading platform, that is, the apparatus main body is Bring to the engaged side. Thereafter, the free end side of the belt is inserted into the groove portion 3 of the winding shaft 2. Furthermore, the belt V inserted through the groove 3 of the winding shaft 2
The unloaded side V2 of the belt is pulled to reduce as much as possible the slack of the belt portion V1 stretched over the load (see FIG. 6A). Next, by operating the switching lever 24, the switching claw 23 is positioned at the normal rotation position, and then the operating lever 21 is reciprocated. By this operation, the operation lever 2
1, the pressing drive member 14 is screwed on the driving shaft 1 to press the brake plate 8 (the pressing drive member 14 side) of the mechanical brake 13. As a result, the drive shaft 1 is intermittently driven in the forward rotation direction via the pressure receiving member 7 that is coupled to the drive shaft 1 so as not to be relatively rotatable.
The rotation of the drive shaft 1 directly rotates the winding shaft 2 in the normal rotation direction. At this time, as shown in FIG. 6B, the belt portion V1 between the load of the belt V and the take-up shaft 2 is overlapped on the unloaded side V2 initially taken up by the take-up shaft 1. The belt V is wound up and the frictional resistance is taken into consideration, and the belt V is prevented from slipping. By continuously reciprocating the operation lever 21, the belt V is further wound, and finally, as shown in FIG. 6C, the belt V is finally wound as much as a double stack, and the loads are sequentially tightened (secured or tightened). . The tightened state is maintained by the operation of the mechanical brake 13, that is, the meshing of the reverse rotation prevention pawl 11 with the reverse rotation prevention wheel 9.

Next, when loosening the load, first the switching claw 2 is operated by operating the switching lever 24.
After positioning 3 in the reverse rotation position, the operation lever 21 is reciprocated. With this operation, the drive from the operation lever 21 causes the press drive member 14 to be screwed over the drive shaft 1 to release the press of the press drive member 14 against the mechanical brake 13. As a result, the operation of the mechanical brake 13 is released. As a result, the drive shaft 1 can freely rotate. Therefore, by pulling the belt portion V1 hung over the load, the belt portion V1 is rotated in the reverse rotation direction, and the fixation (binding) of the belt V to the load is loosened. However, the rotation of the drive shaft 1 in the reverse rotation direction causes the pressing drive member 14 screwed to the drive shaft 1 to screw on the drive shaft 1 again,
Since the brake plate 8 is pressed, the mechanical brake 13 is actuated again and rotation of the drive shaft 1 in the reverse direction is prevented. Thus, when loosening the load, the mechanical brake 1
While the release and operation of 3 are repeated, the take-up shaft 2 is rewinded little by little,
Luggage fixing (clamping) is released.

Further, since the operation procedure and operation when the length of the belt V is desired to be adjusted at the start of the work and the like are as described above, detailed description thereof will be omitted.

Hereinafter, another embodiment will be described in detail with reference to FIGS. 7 to 10.
In the following description of another embodiment, the same structure and parts as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment, and the detailed description thereof is omitted.

In the second embodiment, a speed reduction mechanism 39 is added to the drive shaft 1.
Specifically, as shown in FIG. 7, the drive shaft 1 and the winding shaft 2 are configured separately.
The take-up shaft 102 has a cylindrical shape, and the drive shaft 101 is rotatably inserted into the shaft hole 102B. The shaft end on the other axial end side (right side in the figure) of the drive shaft 101 is supported by a bearing 40, and is between the bearing 40 and the take-up shaft 102 and outside the other side plate 4. Is provided with a gear reduction mechanism 39 as a gear transmission mechanism having a plurality of reduction gears. The gear reduction mechanism 39 meshes with the first gear 41 formed at the shaft end portion of the drive shaft 101. A second gear 43 formed on each of the pair of intermediate shafts 42, a third gear 44 formed on each of the pair of intermediate shafts 42, and an extension portion of the take-up shaft 102. The fourth gear 45 is meshed with the first gear 45. The drive from the drive shaft 101 is transmitted from the first gear 41 to each second gear 42 meshing therewith, and each second gear 4
3 is transmitted to the fourth gear 45 via the third gears 44 that are also supported by the intermediate shafts 42. As a result, the drive from the drive shaft 101 is transmitted to the take-up shaft 102 at a predetermined reduction ratio.

In the second embodiment, it goes without saying that the groove 103 formed on the winding shaft 102 needs to be provided avoiding the drive shaft 101 as shown.

By providing the gear reduction mechanism 39, even when an excessive load is applied to the belt, the reciprocating operation of the operation lever, that is, the winding of the belt can be easily performed with a light force. As a result, even if the operating lever 21 is formed short, a sufficient operating force can be obtained, which can contribute to the compactness of the apparatus.

In the third embodiment, as shown in FIG. 8, the upper hook 33 is biased to the operation lever 21 side and is pivoted on the upper hook support shaft 31 so that the overall right and left balance of the device antagonizes. It is configured as follows.

In the structure shown in FIG. 1, when the device is suspended through the upper hook, the center of gravity is biased toward the operation lever 21, so that the entire device is inclined and tends to be difficult to operate the operation lever 21. By biasing the upper hook 33 as described above, the overall right / left balance of the apparatus is maintained, the apparatus is properly suspended, the operation lever 21 is easy to operate, and the belt can be wound up smoothly.

In the fourth embodiment, as shown in FIG. 9, the winding shaft 2 has a left and right middle portion formed larger in diameter than both ends, and has a function of automatically aligning the belt V. It is.
In other words, when the belt is wound, the right and left central portion of the belt V is always aligned with the left and right central portion of the winding shaft 2, and the belt V may be biased to either the left or right of the winding shaft 2 to hinder the subsequent winding. This is to prevent it in advance.

The method of increasing the diameter may simply be an abacus ball shape. As shown in the figure, the intermediate part may have a horizontal large diameter part, or the entire part may have a maximum intermediate part. It may be a beer barrel shape that bulges. In any case, any shape having a function of automatically aligning the belt V may be used.

In the fifth embodiment, as shown in FIG. 10, the small-diameter shaft portion 2A on the side opposite to the operation lever 21 mounting side of the winding shaft 2 is further extended outward from the side cover 18. An auxiliary operation lever 46 is rotatably mounted on the extended portion, and its free end is integrally connected to the free end of the operation lever 21 via a connecting pin 47 that also serves as a grip. In the figure, reference numeral 48 denotes a separation preventing plate for the auxiliary operation lever 46.

The reciprocating swing operation of the operation lever 21 is further smoothed, and it is also preferable for antagonizing the left / right balance of the apparatus, and the belt V winding operation is much smoother and lighter.

In each embodiment, the upper hook 33 is directly attached to the cargo tightening device via the hook support member 32 on the upper hook support shaft 31, but between the upper hook support shaft 31 and the upper hook 33. A structure in which a fixing belt (not shown) and a hanging fitting (not shown) similar to the hanging fitting 36 for connecting the lower hook 38 are interposed and connected can also be adopted. In particular, when performing truck tightening work,
Compared with the case where the upper hook 33 is directly locked to the engagement hook or the like of the cargo bed, the flexibility of the locking is increased, and the loading device can be easily mounted. In addition, for the connection between the belt V and the lower hook 38,
A means for directly connecting the lower hook 38 to the belt V via an eye (not shown) formed at the end of the belt can be employed without using the hanging metal fitting 36 shown in FIG.

In addition, it goes without saying that each of the above-described embodiments and specific structures and components are used in combination with each other within a range not departing from the intended purpose of the present invention.

1 is a partially cutaway cross-sectional view illustrating a first embodiment of a lever-type hoisting and loading device using a belt according to the present invention. FIG. 2 is a partially omitted front view of a lever-type hoisting using the belt shown in FIG. 1 and a drive shaft of a cargo tightening device. FIG. 3 is an AA cross-sectional view of the drive shaft shown in FIG. 2. FIG. 2 is an enlarged cross-sectional view of a main part of a lever-type hoisting and loading device using the belt shown in FIG. 1. FIG. 2 is a partially cutaway side view of a lever-type hoisting and loading device using the belt shown in FIG. 1. It is description of the effect | action of the lever type winding using the belt shown in FIG. 1, and a cargo tightening apparatus. It is sectional drawing of the principal part which notched and showed the 2nd Example of the lever type winding using the belt which concerns on this invention, and a cargo tightening apparatus. It is a partial notch whole front view of the principal part which shows the lever type winding using the belt which concerns on this invention, and the 3rd Example of a cargo tightening apparatus. It is a partially cutaway front view of the principal part which shows the lever-type winding using the belt which concerns on this invention, and the 4th Example of a cargo tightening apparatus. FIG. 9 is a partially cut-away front view showing a fifth embodiment of a lever-type hoisting and loading device using a belt according to the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,101 ... Drive shaft 2,102 ... Winding shaft 3,103 ... Groove 7 ... Pressure receiving member 8 ... Brake plate 9 ... Reverse rotation prevention wheel 9A ... Engagement tooth 11 ... Reverse rotation prevention claw 13 ... Mechanical brake 14 ... Press drive member 14A ... engagement gear 15 ... operating handle 15D ... pressing spring 21 ... operating lever 23 ... engaging claw 24 ... switching lever 39 ... gear reduction mechanism 46 ... auxiliary operating lever 47 ... connecting pin V ... belt

Claims (7)

A winding shaft penetrating in the diametrical direction and having the belt inserted therethrough, held between the pair of side plates, and a driving shaft integrally connected to the winding shaft protruding from one side plate; A pressure receiving member provided so as to be rotatable integrally with the drive shaft, a reverse rotation preventing wheel provided on the pressure receiving member and provided with a brake plate on both sides so that only forward rotation is possible, and provided outside the reverse rotation preventing wheel. And a brake mechanism having a reverse rotation prevention pawl that meshes with the meshing teeth of the reverse rotation prevention wheel, and a pressure receiving member that is held so as to be able to advance and retreat on the drive shaft on the outer side in the axial direction of the reverse rotation prevention wheel. A pressing drive member that can be rotated forward by pressing, a switching claw that meshes with an engagement gear of the pressing driving member, an operation lever that drives the pressing driving member in a predetermined direction via the switching claw, and the drive Axial An operation member that is inserted into an end portion and is attached to the pressing drive member so as not to rotate relative to the pressing drive member, and a biasing unit that biases the pressing drive member so as to be separated from the reverse rotation prevention wheel. Lever type hoisting and loading device using a belt. 2. The lever-type hoisting and loading device using a belt according to claim 1, wherein a belt sling containing polyarylate fibers is used for the belt. 2. The lever-type hoisting and loading device using a belt according to claim 1, wherein the pressure receiving member is spline-fitted to the drive shaft. The lever type hoisting and loading device using a belt according to claim 1, wherein the drive shaft is provided with a speed reduction mechanism. 2. The lever type according to claim 1, wherein an upper hook support shaft is provided between the upper portions of the pair of side plates, and the upper hook is pivotally supported by being biased toward the operation lever side of the shaft to antagonize the left and right balance. Hoisting and packing equipment. The lever type hoisting and cargo tightening device according to claim 1, wherein the winding shaft has a left and right intermediate portion formed larger in diameter than both ends, and has a function of automatically aligning the belt. An auxiliary operation lever is rotatably mounted on the side opposite to the operation lever mounting side of the winding shaft,
2. The lever-type hoisting and loading device according to claim 1, wherein the free end is integrally connected to the operating lever via a connecting pin that also serves as a grip.

Images