JPH0415552Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a cargo handling vehicle in which a cargo box mounted on a vehicle body frame can be raised and lowered between a ground position and a vehicle body position.

(Prior Art) Conventionally, a so-called horizontally detachable cargo handling vehicle, in which a cargo box mounted on the vehicle body frame is detached from the vehicle body frame, has been used.
As shown in FIG. 7, support legs c are rotatably supported at the four corners of the cargo box b mounted on the vehicle body frame a, and the cargo box b is mounted on the vehicle body frame a.
Some vehicles are equipped with a lifting device d that can lift the cargo box b, and as shown in FIG.
After stretching out, the lifting device d... is lowered and the supporting legs c... are brought into contact with the ground, so that the cargo box b is lifted up to the supporting legs c...
There is one that is supported on the ground via ... and is detachable from the vehicle body frame a. Loading and unloading of cargo into the cargo box b in the cargo handling vehicle is mainly carried out with the cargo box b mounted on the vehicle body frame a, and in some cases, the cargo box b is loaded and unloaded. In some cases, cargo was loaded and unloaded by separating from the vehicle body frame a.

(Problem that the invention aims to solve) However, when loading and unloading cargo with the cargo box mounted on the vehicle body frame, the cargo handling vehicle is not equipped with cargo handling equipment, so the distance between the ground and the cargo box is It is difficult to load and unload cargo from the ground level to the height of the cargo box, and a separate hawk lift or the like must be used to unload the cargo. Also, when loading and unloading cargo with the cargo box removed from the vehicle body frame, the height of the cargo box supported by the support legs is the same as the height of the cargo box mounted on the vehicle body frame. However, it is difficult to load and unload cargo between the ground and the cargo box, and as above, it is necessary to use a hawk lift or the like to load and unload cargo. In this way, in addition to the driver, a new lifting device and a worker to operate this lifting device are required.
It could only be used in places with large-scale equipment, such as container yards. Furthermore, by using telescoping jack cylinders as support legs, the cargo box can be raised and lowered, but a large-scale pressure oil supply system is installed on the vehicle body side or on the load to extend and retract these jack cylinders. In addition to increasing costs, it is necessary to install a container in the box, and when loading and unloading cargo with the cargo box mounted on the vehicle body frame, loading and unloading the cargo between the ground and the cargo must be carried out via a receptacle. There was a problem that I had to do it.

The present invention was developed in view of these points, and it is possible to load and unload cargo into the cargo box mounted on the vehicle body frame using a lifting platform that can be raised and lowered, and also by lowering the cargo box to near the ground. The purpose is to provide a cargo handling vehicle that can load and unload cargo on the ground.

(Means for Solving the Problems) The cargo handling vehicle of the present invention has a cargo box mounted on the vehicle body frame, and a cargo receiving platform that can be raised and lowered via a link mechanism at the rear of the vehicle body frame, and the cargo handling vehicle has The front part of the box is provided with a moving means that can move back and forth between the vehicle body frame and the loading platform, and the rear part of the loading box supports the rear part of the loading box and synchronizes with the lifting and lowering movement of the loading platform. Means for raising and lowering the vehicle between the ground position and the vehicle body position is provided.

(Function) By lifting the rear part of the cargo box from the vehicle body frame using the lifting means at the rear of the cargo box, the cargo box is supported on the vehicle body frame only by the moving means at the front of the vehicle body, and by moving the vehicle forward, the front part of the cargo box will be supported by a loading platform that can be raised and lowered. Then, the lowering speeds of the cargo receiving platform and the lifting means provided on the cargo box are substantially synchronized, and the cargo box is lowered to substantially the ground surface, and the cargo box is loaded and unloaded. Also,
Depending on the weight, shape, etc. of the cargo, there is no need to take the trouble of lowering the cargo box, and the cargo can be loaded and unloaded using only the liftable receiving platform.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 shows a schematic configuration of a cargo handling vehicle according to the present invention.

In the figure, reference numeral 1 denotes a vehicle body frame, and at the rear of the vehicle body frame 1 there is provided a loading platform 3 that can be raised and lowered via a link mechanism 2. A cargo box 5 is removably mounted via a sub-frame 15.

The link mechanism 2 includes, for example, a rotating plate 21 fixed to both ends of a rotating shaft 12 horizontally supported in the left-right direction on a frame 11 provided at the rear of the bottom surface of the vehicle body frame 1; a lift arm 22 whose base end is rotatably supported by the frame 11; and a tension link 23 whose base end is rotatably supported by the frame 11.
and a vertical arm (not shown) whose upper end is rotatably supported by the tip of the tension link 23 and whose lower end is rotatably supported by the tip of the lift arm 22. The link mechanism 2 thus constructed is provided symmetrically on both sides of the vehicle body frame 1.

The cargo receiving platform 3 is rotatably supported on both sides of its rear edge by a support section that supports the tension link 23 and the vertical arm, and when going up and down, it is supported by a horizontal holding member such as a stopper (not shown). It is held horizontally by the That is, by driving a drive device (not shown) such as a hydraulic cylinder connected to the rotating shaft 12, the loading platform 3 is moved up and down while maintaining a horizontal state.

The cargo box 5 is stably mounted on the vehicle body frame 1 by having its bottom wall abut against the upper surface of a subframe 15 having a width substantially equal to that of the cargo box 5.
When running, it is fixed by appropriate fixing means. Jacking cylinders 52 are provided at the rear of both side walls of the cargo box 5, respectively. These jacking cylinders 52 are connected via a connecting hose 16 to a pressure oil supply device (not shown) such as a gear pump that is driven by a PTO provided on the vehicle body side.
By supplying pressure oil from this pressure oil supply device, the support legs 53 of the jacking cylinder 52 can be expanded and contracted in the vertical direction.

On the other hand, support rollers 55 are provided on both left and right sides of the front bottom wall of the cargo box 5 via brackets 56, respectively. This support roller 55 is supported by a guide rail 13 laid on the vehicle body frame 1, and guided by this guide rail 13, the support roller 55 is movable in the front and rear direction. Guide rail 1
3 are installed in cutout grooves 15a formed in both sides of the subframe 15 in the front-rear direction and parallel to each other. Furthermore, the upper surface of the front end of the guide rail 13 is formed into a tapered surface that gradually slopes downward, and the rear end of the guide rail 13 extends to a position close to the base end edge of the cargo receiving platform 3.

Further, a guide groove 31 is formed on the upper surface of the load receiving table 3 from the base end edge to the approximately central portion. As shown in FIG. 5, the guide groove 31 supports the support roller 55 on its bottom surface and guides the loading platform 3 in the front and back direction.
It is located opposite to. Therefore, the support roller 55 is guided by the guide rail 13 and the guide groove 31 and is movable between the vehicle body frame 1 and the cargo receiving platform 3.

Further, although not shown in the drawings, an engaged member is provided on the front of the bottom wall of the cargo box 5, and an engaging member that engages with the engaged member is provided on the cargo receiving platform 3. The front part of the cargo box is stably supported on the cargo receiving platform 3 by the engagement between the mating member and the engaging member. Here, specific examples of the above-mentioned engaged member and engaging member include a king pin and a coupler that are used to connect a tractor and a trailer. That is, by providing a coupler on the loading platform 3 and a king pin on the loading box 5, and locking the two when the loading box 5 is raised and lowered, the front part of the loading box 5 is stably supported by the loading platform 3. Ru.

Reference numeral 17 in the figure is a reel for winding and storing the connecting hose 16.

Note that the number and position of the support rollers 55 provided at the front of the bottom wall of the packing box 5 are not limited to this example; for example, one support roller 55 may be provided at the center of the front bottom wall of the packing box 5. . Furthermore, it goes without saying that, thereby, the guide rail 13 and the guide groove 31 are also provided at positions corresponding to the support rollers 55, respectively.

Next, the operation of this cargo handling vehicle will be explained with reference to FIGS. 2 to 4.

First, a case will be described in which the cargo box 5 is lowered to near the ground. By supplying pressure oil to the jacking cylinder 52 from the vehicle body frame 1 side via the connecting hose 16 and extending the support leg 53, the lower end of the support leg 53 comes into contact with the ground surface. Furthermore, when the support legs 53 are extended, the rear of the cargo box 5 is moved to the vehicle body frame 1.
It will be lifted from. In other words, packing box 5
is supported by the vehicle body frame 1 only by the support rollers 55 at the front of the cargo box 5 (see FIG. 2). Next, by moving the vehicle forward, the support roller 5
5 is guided by the guide rail 13 and moves to the rear end of the vehicle body frame 1. Further, when the vehicle body is moved forward, the support roller 55 moves from the guide rail 13 to the guide groove 31,
The forward movement of the vehicle body is stopped when the vehicle body is guided by the guide groove 31 and moves to approximately the center of the loading platform 3, that is, to the end of the guide groove 31. At this time, the cargo box 5 is located at the rear of the vehicle body frame 1, and the front part of the cargo box 5 is stably supported by the cargo receiving platform 3 by locking the engaged member and the engaging member. (See Figure 3). Then, when the jacking cylinder 52 and the cargo receiving platform 3 are lowered in substantially synchronization, the cargo box 5 is lowered to near the ground (see FIG. 4). Therefore, the cargo is loaded and unloaded into the cargo box 5.
Moreover, when returning the lowered cargo box 5 onto the vehicle body frame 1, the above-mentioned operation may be reversed.

Furthermore, if the packing box 5 is to be completely separated,
As mentioned above, lower the cargo box 5, stop the descent before the cargo box 5 reaches its lowest point, place a suitable member such as a piece of wood between the front of the bottom wall of the cargo box 5 and the ground surface, and After releasing the locking between the locking member and the locked member, the loading platform 3 can be removed from the front part of the cargo box 5 by lowering the loading platform 3 again.

Further, cargo can be loaded and unloaded into the cargo box 5 mounted on the vehicle body frame 1 using the cargo receiving platform 3 which can be raised and lowered.

FIG. 6 shows another guide groove 32 formed in the loading platform 3.
It shows.

The guide groove 32 is formed in a stepped shape by a bottom portion 32b on which the support roller 55 moves and an upper portion 32a whose width is narrowed so that the support roller 55 moving on the bottom portion 32b does not slip upward. , a bracket 56 is inserted through the upper portion 32a.
The guide groove 32 restricts the movement of the support roller 55 in the left and right and up and down directions, and the support roller 55 is stably supported by the loading platform 3, so that the above-mentioned locked member and locking member are not required. However, in this case, the loading platform 3 and the loading box 5 cannot be separated.

(Effects of the invention) As described above, according to the cargo handling vehicle of the present invention, cargo can be loaded and unloaded into the cargo box mounted on the vehicle body frame using the cargo receiving platform that can be raised and lowered, and the cargo box can be placed on the ground. Since it is possible to load and unload cargo by lowering it to a nearby location, optimal loading and unloading can be performed taking into consideration the condition of the cargo, such as its weight, shape, etc., and the location where loading and unloading will be performed, thereby improving the efficiency of loading and unloading work. I can do it.

[Brief explanation of the drawing]

FIG. 1 is a partially cut-away side view showing the schematic structure of the cargo handling vehicle of the present invention, FIGS. 2 to 4 are partially cut-away side views illustrating the operation of this cargo handling vehicle, and FIG.
The figure is a side view showing a guide groove formed in the cargo receiving platform, FIG. 6 is a sectional view showing another guide groove formed in the cargo receiving platform, and FIG. 7 is a side view showing the schematic configuration of a conventional cargo handling vehicle. FIG. 8 is a side view showing a conventional cargo handling vehicle in which the vehicle body and the cargo box are separated. 1... Vehicle body frame, 2... Link mechanism, 3... Loading platform, 5... Loading box, 52... Jacketing cylinder,
55...Support roller.

Claims (1)

[Scope of utility model registration request] A cargo box is mounted on the vehicle body frame, and a cargo platform is provided at the rear of the vehicle body frame that can be raised and lowered via a link mechanism. A moving means movable in the direction is provided at the rear of the cargo box, and an elevating means that supports the rear part of the cargo box and is movable between the ground position and the vehicle body position in synchronization with the elevating movement of the cargo receiving platform. A cargo handling vehicle characterized by the following: