JPS62131835A - Attachment-detachment device for truck cargo deck sheet - Google Patents

Abstract

PURPOSE:To facilitate attachment-detachment of a cargo deck sheet by arranging a rotating means for a scroll shaft of a cargo deck sheet and a winch for unfolding and stretching the cargo deck sheet. CONSTITUTION:A scroll shaft 2 of a cargo deck sheet A is rotated with a motor 3. And a winch 9 for unfolding the cargo deck sheet A is attached at the rear part of paired frame members 5 constituting a chassis frame of a truck. And a bar-shaped reinforcement B is sewed in at the tail end of the cargo deck sheet A scrolled on the scroll shaft 2. Hooks C are attached to both of the ends of the reinforcement B for hooking the front ends of tow cables 13 for the winch 9.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus for efficiently carrying out the work of loading and unloading bed sheets of various types of trucks, particularly large trucks, with as little manpower as possible.

[Prior art] In order to protect the precious cargo from the wind and rain, a typical 1~1000 truck with an open top of the loading platform requires at least 2 angstroms of human effort to cover the heavy and bulky loading platform sheet made of canvas or the like during rainy days. I was working on installing it after shifting it. During sunny days, it has become a common practice to remove the cargo seat to make it easier to load and unload cargo.

[Problems to be Solved by the Invention] The work of attaching and detaching the cargo bed sheet as described above may be fine for small trucks, but it becomes extremely hard work for large vehicles with a capacity of 10 tons or more, which are currently in widespread use, especially after rain. It is not easy to manipulate cargo seats that have absorbed moisture. Moreover, such work, which requires many manpower and a considerable amount of working time, is also problematic from the standpoint of improving productivity in the transportation business.

SUMMARY OF THE INVENTION An object of the present invention is to provide a truck bed seat removal device that can efficiently install, remove, and remove a truck bed sheet with a minimum of manpower and a minimum of time required.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the truck bed sheet attaching/detaching device of the present invention provides a loading/unloading device for loading and unloading a truck bed sheet, which is installed horizontally at the front or rear of the bed. The present invention adopts a configuration comprising: a rotation means for the winding shaft; and a winch installed at the rear or front of the loading platform for expanding the loading platform sheet wound around the winding shaft.

[Operation and Effects of the Invention] The truck loading/unloading bed seat attaching/detaching device having the above-mentioned configuration, when removing the loading bed sheet which is stretched out on the loading bed and is in use, removes the fixing hooks on the peripheral edge of the loading bed sheet from the loading bed. After removing it, fold the hanging portions on both the left and right sides of the loading platform sheet onto the top horizontal plane of the loading platform sheet and lift it up, then lock the front edge of the loading platform sheet to the winding shaft, and then operate the winding shaft rotation means. By doing so, the cargo bed sheet is stored in the front (or rear) of the cargo bed in an extremely compact and unobtrusive state without requiring any manual labor. If you want to reuse the sheets stored in this way, connect the end of the bed sheet wound around the winding shaft to the winch tow cable and operate the winch, and the bed sheet will be folded as shown above. Since the seat is automatically expanded from the front end to the rear end of the loading platform, the next time the folded left and right sides are manually pulled down, the sheet expansion process is instantly completed.

Therefore, the labor and work time required to attach and detach the cargo bed sheet are reduced to an extent that is incomparable compared to the conventional method that relied entirely on manual labor. Even in the event of a collision, the sheet can be quickly stretched without requiring emergency help, thereby avoiding damage to the cargo. And, of course, it contributes to reducing transportation costs.

[Example] A specific configuration of the present invention will be described below based on an example shown in the accompanying drawings.

1 to 6 are explanatory diagrams of one embodiment of the present invention. Reference numeral 1 denotes the loading platform of the truck, A the loading platform sheet, E the load, 2 the winding shaft of the loading platform sheet 1, and 6 the mounting base of the winding shaft 2, which in this embodiment is an L-shaped metal fitting. 3
A motor serves as a means for rotating the winding shaft 2, and is fixed to the upper surface of the metal fitting 6. Reference numeral 4 denotes a column for horizontally supporting the winding shaft 2, and in this embodiment, as means for adjusting the installation height of the winding shaft 2, it is configured as a hydraulic or pneumatic cylinder. 4a is the pillar 4 as a cylinder
A metal fitting 6 is fixed to the top surface of the piston portion 4a.

A pair of pillars 4 of the winding shaft 2 are installed in a gate shape on both sides of the front end of the loading platform 1.

Reference numeral 5 denotes a pair of left and right longitudinal frame members constituting the chassis of the truck, and a winch 9 for stretching the loading platform sheet A is attached near the rear end of each frame member. A rod-shaped reinforcing bone B is sewn into the end of the loading platform sheet A when it is wound around the winding shaft 2, and the loading platform sheet A is attached to both ends of this reinforcing bone B.
The hook C for hooking the tip of the tow rope 13 for the winch 9 for extending the winch 9 is attached.

Reference numeral 8 designates an arm for lifting and supporting the winch tow rope 13 in order to reduce the tendency of the sheet to droop and rub against the load when the winch tow rope 13 is lifted up and the loading platform sheet A is extended. This is a rotation shaft for rotating the arm 8 in the longitudinal direction of the vehicle body. A pulley 12 and a pulley 12 are built into the upper end of the arm 8, which has a hollow structure, and a winch 9 for winding up the tow cable 13 is built into the rotating shaft 8a at the lower end. Reference numeral 10 serves as a drive motor for the winch 9, and 11 and 11a serve as mounting bases for the motor 10, and serve to pull the supporting arm 8 of the tow cable 13 out of the way into the space under the loading platform when it is not in use. Hydraulic or pneumatic cylinders. Alternatively, it may be a mere rail-like mechanism for moving the winch 9 laterally. 14 is a mechanism for fixing the arm 8 when the arm 8 is brought to the storage position under the loading platform shown in broken lines in FIG. Stops 16 and 17 are stops for the towline 13.

Next, regarding how to use the above-mentioned embodiment device, please refer to the attached figure 1.
The explanation will be given mainly with reference to the drawings and FIGS. 5 and 6.

FIG. 5 shows the state in which the loading platform sheet A has been placed over the cargo on the truck loading platform using the winch 9. D and F
Reference numeral 11) rings made of rubber or the like are attached to the periphery of the loading platform sheet A at appropriate intervals, and 15 is a locking hook for boat transportation provided on the periphery of the loading platform.

Both the front and rear ends of the cargo bed sheet are folded to protect against rain using conventional methods.

Next, when the loading platform sheet 8 in the used state shown in Fig. 5 is no longer needed and is to be removed, the sheet should be folded along the sheet bending guide line shown by broken lines a and b in the figure as shown in Fig. 6. Fold it in five along the width of the sheet. This folding work can be completed easily and quickly by two people, but if it is a small or medium-sized truck, it can be done by one person using an auxiliary tool such as a rope. Also, depending on the car model, a tri-fold may be sufficient. Next, the front edge of the folded loading platform sheet A is connected to a hook or other locking member fixing means (not shown) attached to the winding shaft 2 of the loading platform sheet. In addition, by turning on the power switch (not shown) for the rotating motor 3 of the winding shaft 2, the sheet A can be rolled into an extremely compact external shape without requiring any manual labor. If you feel that the sheet A is rubbing the top surface of the load at this time, which is not desirable, or if the load is getting in the way, operate the hydraulic cylinder for vertical movement of the winding shaft 2 built into the support column 4, etc. In addition to moving the winch to the highest possible position in advance, the lifting and supporting arm 8 of the winch towing line 13 is also displaced from the storage position shown in broken lines in FIG. 1 to the arm use position shown in solid lines,
The sheet A may be lifted by hooking the tow rope 13 onto the hook C at the end of the winding of the sheet A. The arm 8 can be fixed at any rotation angle by the function of an attached detent mechanism or the like. As the sheet A is rolled in, the pull line 13 is pulled out from the winch 9 which is in an idling state. Sheet A
After winding the winding shaft 2 around the winding shaft 2, the arm 8 is returned to the storage position and fixed by the stopper 14. The arm 8 may be rotated manually, but a geared motor or a hydraulic cylinder for rotation may also be attached.

When it is desired to extend the loading platform seams 1 to A wound around the winding shaft 2 again into the state shown in FIG. 8 from the broken line position to the solid line position in FIG. Then, the very heavy cargo bed sheet A that is still folded in five will be automatically extended to the rear end of the cargo bed 1 without any effort (the first
(see figure). Once sheet A is expanded like this,
The work of pulling down both sides of the folded sheet and letting it hang over the sides of the cargo can be done easily and quickly by just one person. When the expansion work is completed, the arm 8 is returned to its storage position.

The installation and removal work of the truck bed seat using the device of the present invention as described above can be almost completely automated, except for the labor of folding the seat, so it does not require the manual labor of the conventional method. The seat that has been shifted and attached to the cargo bed is dragged down to the ground, folded to the extent that it can be placed on the roof of the driver's cab, and the worker unfolds the folded seat while riding on top of the cargo. Not only can it eliminate the heavy labor of transporting people, which is unsuitable in today's age of scientific omnipresence, but it can also indirectly contribute to reducing transportation costs.

In the above embodiment, the winding shaft 2 of the loading platform sheet A is installed above the front of the loading platform 1, but it may be installed at the rear of the loading platform 1, for example, below the loading platform, if necessary.

In that case, the winch 9 will be installed at the front of the loading platform 1. Further, instead of the motor 3 or the motor 10, the rotational force of an automobile engine or the like may be used. Furthermore, the folding of the loading platform sheet A or the unfolding of the folded sheet, which is the only work process that requires manual labor, can be accomplished by attaching a second winch that utilizes the rotational force of the motor 3 or 10. It can also be made significantly easier.

[Brief explanation of drawings]

1 to 6 are views explaining an embodiment of the present invention, and FIG. 1 is a side view of a truck illustrating a state in which a loading platform sheet is being expanded (or rolled up);
Figure 2 is a top view of Figure 1, Figures 3 and 4 are (a)-(a) and (b)-(b) sectional views of Figure 2, respectively, and Figure 5 is an expanded view of the loading platform sheet. FIG. 6 is a perspective view showing the carrier sheet partially wound up on the winding shaft. In the diagram A... Loading platform sheet 1... Loading platform 2...
Sheet winding shaft 3... Winding shaft rotation means (motor) 4
．． 4a... Means for adjusting the height of the winding shaft 8... Arm for lifting and supporting the winch towing cable 9... Winch 1
0...Motor 13...Winch tow cable Figure 5a Figure 6

Claims (1)

[Scope of Claims] 1) A winding shaft of a loading platform sheet for covering a load, which is installed horizontally at the front or rear of the loading platform, a means for rotating the winding shaft, and a loading platform wound around the winding shaft. A truck loading/unloading bed sheet attaching/detaching device comprising a winch installed at the rear or front of the loading platform for expanding the sheet. 2) The arm for lifting and supporting the winch tow cable is rotatably installed on both sides of the loading platform using its lower end as a fulcrum.
A device for attaching and detaching the truck bed seat described in Section 1. 3) The truck bed seat attachment/detachment device according to claim 1 or 2, further comprising means for adjusting the installation height of the winding shaft. 4) The truck bed seat attachment/detachment device according to any one of claims 1 to 3, wherein the winding shaft rotating means is an electric motor.