JP4142348B2 - Luggage unloading device for vehicles - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicular load unloading apparatus that loads and unloads a load by moving a movable platform housed on a load bed of a vehicle to the ground behind the load bed.
[0002]
[Prior art]
When loading and unloading heavy loads such as motorcycles on the loading platform of trucks and other vehicles, a board is diagonally inserted between the rear end of the loading platform and the ground, and the luggage is loaded and unloaded along this board. ing. However, with this method, a heavy load that cannot be rolled on a plate material, such as a motorcycle in which a tire does not rotate due to a failure, cannot be loaded or unloaded on a loading platform.
[0003]
On the other hand, some trucks and the like are equipped with a hoist crane and a lifter for loading and unloading such heavy loads. Although a hoist crane is relatively inexpensive, it requires a slinging work, so that a complicatedly shaped baggage such as a motorcycle takes time to lift, and the slinging operator may be injured. Further, since the lifter requires a hydraulic cylinder, an electric arm or the like for raising and lowering and turning, the apparatus becomes very expensive.
[0004]
[Problems to be solved by the invention]
SUMMARY OF THE INVENTION An object of the present invention is to provide an inexpensive vehicular load unloading apparatus that can load and unload a heavy load on a loading platform of a vehicle easily and safely.
[0005]
[Means for Solving the Problems]
In order to solve the above-described problems, a vehicle cargo unloading apparatus according to the present invention includes a fixed frame provided with a guide rail that is attached to a loading platform of a vehicle and extends in the front-rear direction from above the loading platform to substantially the ground behind the loading platform. It is stored on the guide rail and is moved in the front-rear direction from the loading platform to the ground behind the loading platform to load and unload the cargo. From the horizontal part of the guide rail that is formed in this order, a horizontal part that is generally horizontal, a rising slope part that slopes upward to the rear side, and a downward slope part that slopes downward to the rear side are sequentially formed. A descending part that descends almost to the ground is formed, and guided parts guided by each part of these guide rails are provided at the front end side of the movable platform, and the movable part is provided at the rear end part of the fixed frame. Provided with a support roller that is in rolling contact with the lower surface side of the platform and supports the movable platform so as to be movable in the front-rear direction, while supporting the rear end side of the movable platform stored on the cargo bed with the support roller, The guided portion on the front end side is sequentially guided by the horizontal portion of the guide rail, and the movable platform is moved substantially horizontally rearward on the loading platform, and then is guided obliquely upward by the ascending inclined portion. The rear end side of the movable platform is inclined downward, and then the lower inclined portion is guided obliquely downward, the rear end side of the movable platform is grounded to the rear of the loading platform, and then moved backward. A configuration was adopted in which the front end side of the movable platform, which was guided downward and grounded on the rear end side, was lowered to the ground.
[0006]
That is, the fixed frame attached to the loading platform extends in the front-rear direction of the loading platform, and the horizontal portion, the rising slope portion, and the descending slope portion are sequentially formed from the front end side at the portion on the loading platform, and descends to the ground at the rear portion of the loading platform. A guide rail with a descending part is provided, and the movable platform housed on the loading platform is supported by the support roller provided at the rear end of the fixed frame while the front end is guided by the guide rail. After moving the rear end of the loading platform to the rear and grounding the rear end side behind the loading platform, the front end is guided to the ground by the lowering part of the guide rail and lowered to the ground. Made it easy and safe to load and unload heavy loads on the platform.
[0007]
By providing a pair of the guide rails on the left and right sides of the movable platform, the movable platform can be smoothly moved back and forth without tilting or swinging in the lateral direction of the movable platform.
[0008]
By attaching a wheel that is brought into contact with the grounded ground to the rear end side of the movable platform, the movable platform with the rear end grounded can be smoothly moved back and forth.
[0009]
By providing a driving means for driving at least the forward movement of the movable platform moving in the front-rear direction, a heavy movable platform loaded with luggage can be easily moved onto the loading platform. As a means for driving only the movement in the forward direction, for example, a method of connecting a rope, a wire or the like to the front end portion of the movable platform and winding it up in front of the loading platform can be employed. Of course, driving means for driving movement in both the front and rear directions may be provided.
[0010]
A chain is laid along the guide rail of the driving means, a sprocket is attached to the front end side of the movable platform, the sprocket is meshed with the chain and driven to rotate, and the movable platform is moved in the front-rear direction. In this case, the movement of the movable platform in both the front and rear directions can be driven with an inexpensive configuration.
[0011]
By making the descending portion of the guide rail foldable or detachable and housed on the cargo bed, the vehicle can be safely driven without displaying the protrusion from the cargo bed.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS. As shown in FIGS. 1 and 2, this vehicle cargo unloading device extends in the front-rear direction on both the left and right sides of a rectangular fixed frame 1 attached to the loading platform of the vehicle A from the loading platform to substantially the ground behind the loading platform. A pair of guide rails 2 is provided, and a rectangular movable platform 3 housed on the loading platform is guided by a pair of left and right guide rails 2 and moved to the ground behind the loading platform, and the movable platform 3 moved to the ground. In addition, it loads and unloads luggage such as motorcycles.
[0013]
The pair of guide rails 2 includes a horizontal part 4 that is substantially horizontal from the front end side at the part on the loading platform, a rising slope part 5 that slopes upward to the rear side, and a downward slope part 6 that slopes downward to the rear side. A descending portion 7 that is formed sequentially and that descends to the ground is formed in the rear portion of the cargo bed that is continuous with the portion on the cargo bed. The movable platform 3 is guided by the guide rails 2 by rollers 9 as guided portions attached to the left and right ends of the rotary shaft 8 provided on the front end side. When moving on the loading platform, the rear end side is fixed to the fixed frame. 1 is supported by a rotatable support roller 10 attached to the left and right of the rear end. As will be described later, after the rear end side of the movable platform 3 is grounded, the movable platform 3 moves by rolling the wheels 11 attached to the left and right of the rear end to the ground.
[0014]
As shown in FIGS. 3 (a) and 3 (b), the pair of guide rails 2 are formed in a C-shaped cross section facing each other in an inward direction, and a chain 12 laid along the upper flange is connected to the rotating shaft 8 of the rotating shaft 8. Sprockets 13 attached to both ends are engaged with each other. The rotary shaft 8 is rotationally driven via a chain 15 and a sprocket 16 by a motor 14 attached to the front end portion of the movable platform 3.
[0015]
The left and right rollers 9 are rotatably attached to the rotary shaft 8 via bearings (not shown) and are guided by the lower flanges of the guide rails 2. Therefore, the movable platform 3 moves in the front-rear direction by meshing the sprocket 13 and the chain 12 that are rotationally driven while the front end side is guided by the guide rail 2 by the roller 9. Alternatively, the chain 12 that meshes with the sprocket 13 may be laid along the lower flange of the guide rail 2, and the roller 9 may be guided by the upper flange.
[0016]
As shown in FIG. 4, the descending portion 7 of the guide rail 2 is formed separately and is attached to the rear end of the descending inclined portion 6 by a hinge 17. When loading / unloading a load on the movable platform 3, as shown in FIG. 4 (a), the descending portion 7 has a notch portion 18 formed on the end face fitted into the shaft of the thumbscrew 19, so that the descending inclined portion 6 Tightened to be connected. When the vehicle A travels after finishing the loading and unloading of the load, the lowering portion 7 loosens the thumbscrew 19 and is rotated upward by the hinge 17 and stored on the loading platform, as shown in FIG. The clamp member 21 attached to the outer side surface of the descending inclined portion 6 is hung on the flange member 20 that is folded and attached to the outer side surface thereof, and is fastened and fixed.
[0017]
A procedure for moving the movable platform 3 housed on the loading platform to the ground behind the loading platform as shown by the solid line in FIG. 1 will be described below, as indicated by the one-dot chain line in FIG.
[0018]
By rotating the sprocket 13 attached to the rotating shaft 8 by the motor 14, the movable platform 3 is guided by the horizontal portion 4 of the guide rail 2 with the roller 9 on the front end side as shown in FIG. While the end side is supported by the support roller 10, it moves substantially horizontally to the rear of the loading platform. As shown in FIG. 6, when the roller 9 enters the rising inclined portion 5 of the guide rail 2, the movable platform 3 whose rear end side is supported by the support roller 10 is gradually lifted at the front end side and inclined downward at the rear end side. To do.
[0019]
As shown in FIG. 7, the movable platform 3 whose rear end side is inclined downward moves rearward while maintaining a substantially constant inclination angle when the roller 9 enters the descending inclined portion 6 of the guide rail 2, and the rear end thereof. The wheel 11 attached to the side is grounded to the ground behind the loading platform. When the wheel 11 is grounded, the movable platform 3 is lifted from the support roller 10, and the wheel 11 is brought into contact with the ground to move further back.
[0020]
Thereafter, as shown in FIG. 8, when the roller 9 enters the descending portion 7 of the guide rail 2, the front end side of the movable platform 3 descends, and the movable platform 3 is located behind the loading platform as shown by the solid line in FIG. The baggage is loaded and unloaded. The movable platform 3 loaded and unloaded is housed on the loading platform in the reverse movement procedure as described above by rotating the sprocket 13 in the reverse direction with the motor 14.
[0021]
In the above-described embodiment, a pair of left and right guide rails are provided on the fixed frame, but the number of guide rails may be one. In this case, one guide rail is provided so as to extend in the front-rear direction at the center of the fixed frame, and the slit portion that allows fitting from below of the rising and falling slopes of the guide rail protruding upward is movable. It may be provided in the center of the platform.
[0022]
Further, the guide rail is not limited to a laterally-shaped C-shaped cross section as in the embodiment, and the upwardly oriented C-shaped depending on the form of a guided portion such as a roller provided on the front end side of the movable platform. It can also be a cross section, a T-shaped cross section, an I-shaped cross section, or the like.
[0023]
Further, the means for driving the movement of the movable platform is not limited to the meshing of the sprocket and the chain in the embodiment. For example, when driving only the movement of the movable platform to the front, the front end of the movable platform is not limited. It is also possible to employ a method in which a rope, a wire or the like is connected to the side, and this is wound up forward of the loading platform.
[0024]
【The invention's effect】
As described above, the vehicular cargo unloading device according to the present invention extends to the fixed frame attached to the cargo bed in the front-rear direction of the cargo bed, and includes a horizontal portion, a rising slope portion, and a downward slope portion from the front end side on the cargo bed. A guide rail is formed in order and a guide rail is formed in the rear part of the cargo bed, and a descending part that descends to the ground is formed.The movable platform housed on the cargo bed is guided by the guide rail at the rear edge side while guiding the front edge side of the movable platform. The rear end of the fixed frame is supported by a support roller provided at the rear end of the fixed frame and moved to the rear of the loading platform. After the rear end is grounded to the rear of the loading platform, the front end is guided by the lowering portion of the guide rail and lowered to the ground. Thus, it is possible to unload and load heavy loads on the movable platform moved to the ground behind the loading platform, and to reduce the load / unload device.
[0025]
Further, by providing a driving means for driving at least the forward movement of the movable platform moving in the front-rear direction, the heavy movable platform loaded with luggage can be easily moved onto the loading platform. Of course, if a driving means for driving movement in both the front and rear directions is provided, the movable platform can be moved more easily backward.
[0026]
Furthermore, by making the descending portion of the guide rail foldable or detachable and housed on the cargo bed, the vehicle can be driven safely without displaying the protrusion from the cargo bed.
[Brief description of the drawings]
1 is a front view showing an embodiment of a vehicular cargo unloading apparatus. FIG. 2 is a plan view of FIG. 1. FIG. 3 is a front view showing an enlarged main part of FIG. Sectional view along line III-III [FIG. 4] a is an enlarged front view of the lowering portion of the guide rail of FIG. 1, and b is a front view showing a state in which the lowering portion of “a” is folded. FIG. 6 is a front view showing a state where the movable platform 1 is moved. FIG. 6 is a front view showing a state where the movable platform is moved. FIG. 7 is a front view showing a state where the movable platform is moved. FIG. 1 is a front view showing a state where the movable platform in FIG. 1 is moved.
DESCRIPTION OF SYMBOLS 1 Fixed frame 2 Guide rail 3 Movable platform 4 Horizontal part 5 Ascending slope part 6 Inclining part 7 Falling part 8 Rotating shaft 9 Roller 10 Support roller 11 Wheel 12 Chain 13 Sprocket 14 Motor 15 Chain 16 Sprocket 17 Hinge 18 Notch 19 Butterfly Screw 20 鉤 member 21 Clamp member

Claims (6)

A fixed frame provided with a guide rail that is attached to the loading platform of the vehicle and extends in the front-rear direction from above the loading platform to the ground behind the loading platform, and stored on the loading platform and guided by the guide rail from the loading platform to the ground behind the loading platform. It consists of a movable platform that moves in the front-rear direction and loads and unloads, and on the platform of the guide rail, a horizontal part that is generally horizontal from the front end side, a rising slope part that slopes upward to the rear side, and a rear part A descending slope part that slopes downward to the side is sequentially formed, and a descending part that descends to the ground is formed at the rear part of the guide rail that continues to the part on the cargo bed, and is guided to each part of these guide rails. The guided portion is provided on the front end side of the movable platform, and is brought into rolling contact with the rear end portion of the fixed frame on the lower surface side of the movable platform. A support roller for movably supporting is provided, and the guided portion on the front end side is sequentially placed on the horizontal portion of the guide rail while the support roller supports the rear end side of the movable platform housed on the loading platform. The movable platform is moved rearward substantially horizontally on the loading platform, and is then guided obliquely upward by the ascending inclined portion, and the rear end side of the movable platform is inclined downward, and then the descending inclined portion In this case, the rear end side of the movable platform is grounded to the rear of the loading platform and moved rearward. Finally, the lower end of the movable platform is guided by the lowering portion and the rear end side is grounded. A vehicular cargo unloading device that lowers the front end to the ground. The vehicular cargo loading / unloading device according to claim 1, wherein the guide rails are provided as a pair on both right and left sides of the movable platform. The vehicle cargo unloading apparatus according to claim 1 or 2, wherein a wheel that is brought into rolling contact with a grounded surface is attached to a rear end side of the movable platform. 4. The vehicle cargo loading / unloading apparatus according to claim 1, further comprising a driving means for driving at least a forward movement of the movable platform moving in the front-rear direction. The drive means lays a chain along the guide rail, attaches a sprocket to the front end side of the movable platform, engages the sprocket with the chain, rotationally drives it, and moves the movable platform in the front-rear direction. The cargo unloading apparatus for vehicles according to claim 4 which is a thing. The vehicular cargo unloading apparatus according to any one of claims 1 to 5, wherein the lowering portion of the guide rail is foldable or detachable and is stored on the cargo bed.

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