JPH0620853B2 - Lifting device for cargo receiving platform in freight car - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention is used in the field of a freight vehicle that allows loading and unloading of cargo on a cargo bed from any location.

(B) Conventional Technology In a conventional load receiving platform lifting device, a parallel link mechanism or a vertical lifting mechanism is fixed to a vehicle body, and by operating the mechanism, the load receiving platform is moved up and down to load and unload cargo. There is.

(C) Problems to be Solved by the Invention In the above-mentioned configuration, when loading luggage to the full of the loading platform in order to improve transport efficiency, the loading place is limited, so the luggage is loaded on the loading platform. Have to move a lot,
It requires a large amount of input and reduces work efficiency.

(D) Means for Solving Problems The present invention solves the problems as described above, and guide rails are fixed to both sides of the loading platform, and the guide rails can move back and forth on the guide rails. A movable body is provided respectively, and a pair of front and rear gate-shaped frames are fixed on the pair of movable bodies, and a horizontally-held load receiving platform can be moved up and down from the ground to the load platform on at least one side of the gate-shaped frame. The present invention relates to a cargo platform elevating / lowering device in a freight vehicle, which is provided with a drive device for elevating / lowering the cargo platform in the upper part of the gate frame.

(E) Example When an example is described below with reference to the drawings, (1) is a loading platform mounted on a vehicle body (2), and a frame body having a ceiling (3) on the loading platform (1)
(4) is provided, and the frame (4) protects the luggage (5) on the luggage carrier (1) from rain and the like.

Guide rails (7) and (7) extending in the front-rear direction are fixed to both side surfaces (6) and (6) of the loading platform (1), and the guide rails (7) and (7) have a U-shaped cross section. (8) (8) is provided.

Inside the movable bodies (8) (8), upper rollers (9) ... And lower rollers (10) are provided, and the upper rollers (9) ... are guide rails (7) (7) having an inverted L-shaped cross section. ) Rolling on the upper surface (11) (11),
The rollers (10) roll on the inner surfaces (12), (12) of the guide rails (7), (7), and the moving bodies (8), (8) are guided by the two guide rollers (9, 10). (7) It is movably supported along (7) and is prevented from coming off to the outside.

On the upper surface of the moving body (8) (8), the gate-shaped frames (13) and (13) straddling the frame body (4) on the loading platform (1) are placed in opposition to each other with a space provided in the front and rear. (8) By moving (8), the gate-shaped frames (13) and (13) are also moved back and forth.

The forward and backward movement of the moving bodies (8) and (8) is performed as shown in FIG.
Shafts (15) (1) supported by bearings (14) before and after (1)
5) is provided, and the sprocket is attached to both ends of this shaft (15) (15).
(16) ... is fixed, the chain (17) (17) is hung around the pair of front and rear sprockets (16) (16), and both ends of the chain (17) (17) are attached to the front and rear of the moving body (8) (8). With the structure attached to, the left and right moving bodies (8) and (8) can be moved at the same time by turning the handle (18) attached to the front shaft (15).

Guide frames (19) and (19) having substantially the same length are fixed to the outer surfaces of the gate-shaped frames (13) and (13), and the guide frames (19)
The lower part of (19) is also fixed to the outer surface of (8) (8) of the moving body.

Sliders (20) are provided on the guide frames (19) (19), respectively.
(20) is provided so as to be able to move up and down, and at the lower end of the sliders (20) and (20), the base of the load receiving table (22) horizontally held by the supporting rods (21) and (21) is pivotally supported, and the slider ( 20) When the (20) is moved up and down, the loading tray (22) is moved up and down.

As shown in FIG. 3, a drive unit (23) for raising and lowering the loading platform is provided on the upper portion of the gate-shaped frames (13) (13), and the drive unit (23) is a pair of gate-shaped frames (13). ) (13) between the reinforcement girders (2
4) (24) is attached, the hydraulic cylinder (25) is fixed to this reinforcing girder (24) (24), and the mounting member (26) at the end of the hydraulic cylinder (25)
Pulleys (27) (27) are provided on both ends, and one end is a portal frame (13)
(13) Attach the wire (28) (28) mounted on the upper surface to the pulley (27) (2
7) and the pulleys (29) (29) provided at the corners of the gate frame (13) (13) and the other end to the guide frame (1
9) Attached to the sliders (20) and (20) in (19), and by extending the hydraulic cylinder (25), the wires (28) and (28) are pulled so that the load receiving base (22) rises. ing.

In the embodiment, the drive device for raising and lowering the cargo receiving table is provided on the upper portion of the gate frame, but it may be provided on the side of the gate frame opposite to the cargo receiving table. It is also possible to provide a load receiving platform that can be raised and lowered on both sides of the gate frame so that luggage can be loaded from both sides of the platform.

The operation of the present invention will be described next with the structure as described above. First, when carrying out the unloading work, the load (5) is placed on the load receiving base (22) and the hydraulic cylinder (25) is extended in the state shown in FIG. Then, the sliders (20) (20) are raised along the guide frames (19) (19), and the hydraulic cylinder (25) expands when the load carrier (22) is at substantially the same height as the load carrier (1). To stop.

In that state, the luggage (5) is moved from the loading tray (22) to the loading tray (1).

When the luggage is unloaded from the loading platform, the reverse operation to the above may be performed.

Next, when changing the loading / unloading place, the handle (18) is fitted to the front shaft (15) and the handle (18) is rotated.

The shaft (15) and the sprocket (16) rotate and the moving body (8)
(8) and the gate type frames (13) and (13) are moved back and forth and stopped at a predetermined position.

After stopping the moving bodies (8) and (8), the hydraulic cylinder (25) is expanded and contracted to perform the unloading work.

It is possible to load luggage on the bed (1) without moving the luggage (5) on the bed (1) significantly during the above-mentioned work.

In addition, when the position of loading on the loading platform (22) from the ground is different from the position of loading on the loading platform (1), load the luggage (5) on the loading platform (22), and after raising the loading platform (22), This can be done by moving the moving bodies (8) (8) and moving the luggage at a predetermined position of the loading platform (1).

(F) Effects of the Invention As described above, according to the present invention, moving bodies are provided on both sides of the loading platform, a gate frame is attached between the moving bodies, and the loading platform is provided on the portal frame so that the loading platform can be moved up and down. Since the drive device is provided, it is possible to arbitrarily select the loading position on the loading platform simply by moving the moving body, and it is not necessary to move the luggage largely on the loading platform as in the conventional case, which is wasteful. Labor and time can be saved.

Further, since the movable bodies on both sides are connected by the gate type frame, the luggage on the cargo bed does not get in the way, and it is not necessary to provide a frame body on the cargo bed for supporting the load receiving platform elevating device.

[Brief description of drawings]

1 is an overall view, FIG. 2 is a rear view of FIG. 1, FIG. 3 is an AA view in FIG. 1, FIG. 4 is a sectional view taken along BB of FIG.
FIG. 5 is a drive system diagram of the moving body. (1) is a cargo bed, (7) is a guide rail, (8) is a moving body, (13) is a gate frame, (22) is a cargo carrier, and (23) is a drive unit.

Claims (1)

[Claims] 1. A guide rail is fixed to both sides of a loading platform, and each of the guide rails is provided with a movable body that can move back and forth on the guide rail. On the pair of movable bodies, a pair of front and rear gate frames are provided. A load-holding platform that is horizontally held is provided on at least one side of the gate-shaped frame so that it can be lifted from the ground to the load-bearing platform, and a drive device for lifting the load-receiving base is provided on the upper part of the gate-shaped frame. Lifting device for cargo cradle in a freight car.