JPH054438Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a box-shaped vehicle body equipped with a lifting device for cargo handling, in which the box-shaped vehicle body itself mounted on a freight vehicle is provided with a lifting device for cargo handling.

(Prior Art) Recently, freight cars having a box-shaped vehicle body (van body) have come into use for transporting precision machinery, electronic equipment, and the like. In order to save labor in cargo handling operations for freight vehicles having a box-shaped vehicle body, a lifting device equipped with a lifting plate that is raised and lowered by a link mechanism or the like is installed on the outside of the rear of the box-shaped vehicle body.

(Problem that the invention aims to solve) However, if the lifting device is attached to the outside of a box-shaped car body with a general structure, it becomes a problem to store the lifting plate of the lifting device when the vehicle is running, and also when the cargo handling starts. I disliked the troublesome operation of pulling out the elevating plate from its retracted state. Furthermore, distribution centers, warehouses, etc. may have platforms that are at the same height as the floor of the truck body, and in this case, there is no need to use a lifting device; Depending on the structure, it may be difficult to bring the platform at the distribution center or warehouse side close to the floor surface of the truck body.

(Means for solving the problem) In view of the above points, the present invention has a structure in which the lifting device is built into the box-shaped vehicle body itself, instead of attaching the lifting device for cargo handling work externally to the box-shaped vehicle body. It is an object of the present invention to provide a box-shaped vehicle body with a lifting device that enables cargo handling work to be carried out efficiently when the device is in use, and in which the bumper does not interfere with the use of the lifting device.

This invention integrates side plates on both sides of the elevator plate that makes up the rear part of the floor, fixes runners vertically on the back side of each side plate, and fixes runner guide frames on the inside of both rear side walls of the box-shaped car body. By guiding the runner so as to be movable in the vertical direction, the elevating plate and the side plate can be moved up and down with respect to both rear side walls of the box-shaped vehicle body, and the cylinder provided on the box-shaped vehicle body side a lifting device for driving the lifting plate and the side plate up and down; Further, in conjunction with the detection result of the means for detecting elevation, when the elevating plate is lowered, the bumper member is made parallel to the side wall of the box-shaped vehicle body, and the elevating plate is at the upper limit position. The problems of the prior art described above are solved by providing a driving means for driving the bumper member so that it is parallel to the rear end surface of the box-shaped vehicle body.

(Function) In the box-type vehicle body with a lifting device of the present invention, the lifting device is configured such that the lifting plate constituting the rear part of the floor surface and the side plates integrated therein can be raised and lowered with respect to both rear side walls of the box-type vehicle body. There is no need to store or pull out the lift plate, and by lowering the lift plate and landing it on the ground, cargo on the ground can be loaded immediately, or cargo on the lift plate can be lowered to the ground. Since the height of the raised position of the elevating plate matches the height of the floor surface of the box-type vehicle body, when the elevating device is not used, the vehicle can be used just like a normal box-type vehicle body. In addition, side plates are integrated on both sides of the lift plate to prevent cargo from collapsing during cargo handling. In addition, a bumper member that also serves as a bumper and is used to attach a tail lamp is rotatably disposed below the rear end of the box-shaped vehicle body, and when the elevating plate is lowered, the bumper member is attached to the side wall of the box-shaped vehicle body. The bumper member is in a parallel retracted state, and when the vehicle is running, that is, when the elevating plate is at the upper limit position, the bumper member is parallel to the rear end surface of the box-shaped vehicle body and functions as a bumper.

(Example) Hereinafter, an example of a box-type vehicle body with a lifting device according to the present invention will be described with reference to the drawings.

1 to 3, reference numeral 1 denotes a box-shaped vehicle body mounted on the chassis of a freight vehicle, and a double-opening rear door 2 has a hinge 4 in a rear opening frame 3 of the box-shaped vehicle body 1. It is pivotally connected through the

Further, the rear floor surface of the box-shaped vehicle main body 1 is a notch portion, and the elevating plate 11 of the elevating device 10 is arranged as a rear floor surface corresponding to the notch portion to move up and down. Side plates 12 are integrated on both sides of the elevating plate 11, and a front edge plate 13 is pivotally attached to the tip edge of the elevating plate 11 via a hinge. This front edge plate 13
When not in use, stand it up as shown in Figure 3 so that it does not get in the way of closing the rear door 2.
During cargo handling work when the bottom surface of the lifting plate 11 lands on the ground, the lifting plate 11 is tilted toward the tip side as shown in FIG.

In the lifting device 10, on both sides of the lifting plate 11, that is, on the back side of each side plate 12, runners 14 in the shape of elongated square members are fixed in the vertical direction. Two runners 14 are provided on one side and two on the other side, and a guide roller 15 is pivotally attached to the upper end of each runner 14 as shown in FIG.

On the other hand, inside both side walls 1A of the box-shaped vehicle body 1,
As shown in FIG. 3, runner guide frames 16 are each fixed and guide the runners 14 in a vertically movable manner. Guide rollers 17 for guiding the runners 14 are pivotally attached to the lower part of the inside side of the box-shaped vehicle body 1.

Furthermore, the lower end of the main body of a lifting hydraulic cylinder 20 is pivotally attached to the inner side of both sides of the box-shaped vehicle main body 1, and a connecting plate 21 is attached to the tip of the rod 20A of the cylinder 20.
are pivotally connected, and two left and right sheaves (pulleys) 22 are pivotally supported by a connecting plate 21. A chain (or wire rope) 23, one end of which is fixed to the main body side of the hydraulic cylinder 20, is suspended around the sheave 22 and fixed to the upper end of the runner 14. The connecting plate 21 is provided with a roller 24 in order to cope with the fluctuating load on the elevating plate. 2
This makes it easier to move up and down. These cylinders 2
0, lifting plate 11 for sheave 22, chain 23, etc.
The mechanism for pulling up can be arranged compactly between the side plate 12 on the elevating plate side and the side wall on the box-shaped vehicle main body 1 side.

Closing and locking of the double door rear door 2 is performed by setting the elevating plate 11 of the elevating device 10 to the upper limit position,
The locking portion at the end of the locking rod 30, which is pivotally supported in the vertical direction on the outer surface of the door, is connected to a locking metal fitting fixed to the rear opening frame 3 of the box-shaped vehicle body 1 and the end face of the lifting plate 11 of the lifting device 10. This is done by engaging.

Now, as shown in FIGS. 4 to 6, the symmetrical rectangular frame-shaped bumper members 35A and 35B, which function as bumpers when the vehicle is running, are support members extending vertically from the lower rear end of the box-shaped vehicle body 1. axis 37 to 36
The shafts 37 are rotatably attached to each other, and a coil spring 38 is disposed on each pivot shaft 37 . Each bumper member 35A, 35B is
The side wall 1 of the box-shaped vehicle body 1 is fixed by the coil spring 38.
It is biased in the direction of the retracted state parallel to A (the position of the imaginary line in FIGS. 5 and 6). A tail lamp 39 and the like are attached to each bumper member 35A, 35B. Furthermore, cylinder mounting supports 40 are fixed to positions near the rear ends of both side walls of the box-shaped vehicle body 1, and a bumper drive hydraulic cylinder 41 is pivotally mounted between the supports 40 and the bumper members 35A, 35B. It is worn.

On the other hand, as shown in FIGS. 7 and 8, one end of a hydraulic cylinder 45 serving as a hydraulic pressure source for the bumper driving hydraulic cylinder 41 is pivotally mounted on the back side of the lifting plate 11,
Further, a rotating shaft 48 to which an arm 46 and an engaging plate 47 are fixed is pivotally supported on the back side of the elevating plate 10.
The rod of the hydraulic cylinder 45 is connected to the arm 46, and an operating arm 50 that engages the engagement plate 47 is pivotally supported by a rotating shaft 48.
A roller 51 is provided at the tip of the operating arm 50, and an extension spring 52 is provided between the engagement plate 47 and the operating arm 50. The engagement plate 47 has engagement bending parts 47A and 47B, and when the operating arm 50 is in abutment engagement with the bending part 47A side as shown by the solid line in FIG. 7, the operating arm 50 and the engagement plate 47 can be rotated clockwise as a unit. In addition, the hydraulic cylinder 4 for driving the bumper
1 and a hydraulic cylinder 45 serving as a hydraulic pressure source are connected through a hose. A block 56 is fixed to the runner guide frame 16 fixed to the box-shaped vehicle body 1 and protrudes downward, and when the lifting plate 11 is raised, the block 5
The operating arm 50 having a roller 51 that can freely come into contact with the bumper drive hydraulic cylinder 41 and the hydraulic cylinder 45 serving as a hydraulic pressure source linked to the operating arm 50 function as a means for detecting the elevation of the elevating plate 11. A mechanism associated with this functions as a bumper drive means.

In order to connect and integrate the left and right bumper members 35A and 35B, a connecting lock fitting 55 is pivotally attached to the bumper member 35B as shown in FIG. The connecting lock fitting 55 has a built-in micro switch, and when the connecting lock fitting 55 connects and locks the left and right bumper members 35A, 35B, it turns off the power source of the hydraulic pressure source (power unit) of the lifting hydraulic cylinder 20. Elevating plate 1 as off
The downward movement of step 1 is not possible.

In the configuration of the above embodiment, during cargo handling work,
Remove the connecting lock fitting 55 that connects and integrates the left and right bumper members 35A and 35B, turn on the hydraulic power source of the lifting hydraulic cylinder 20, and connect the lock rod 30 of the rear door 2, the rear opening frame 3, and the end surface of the lifting plate. The elevating plate 11 is released by disengaging it from the side locking metal fittings, and the rear door 2 is opened. In this state, hydraulic cylinder 2
By retracting the rod 20A (recirculating the oil in the cylinder to the hydraulic power source), the sheave 22
is lowered, and the runner 14 connected to the chain 23
is lowered, and the elevating plate 11 fixed to the runner 14 and the side plate 12 integrated therewith are lowered.

At this time, as shown in FIG. 7A, the runner guide frame 16
Block 56 fixed to the side and protruding downward
The operating arm 50 that was in contact with the block 5
6 and the operating arm 50 can rotate counterclockwise to the solid line position shown in FIG.
By the force of the coil springs 38 attached to the pivots 37 of the bumper members 35A and 35B, the bumper members 35A and 35B are respectively stored parallel to the side wall 1A of the box-shaped vehicle body and operate so as not to interfere with the lowering of the elevating plate 11.

The descending operation of the runner 14 continues, and the lower surface of the elevating plate 11 finally lands on the ground. Then, the front edge plate 13 connected to the elevating plate 11 is tilted forward so that the tip of the front edge plate 13 lands on the ground. In this state, it is possible to efficiently carry cargo into and out of the elevator board 11 using a truck on the ground side or the like.

By extending the rod 20A of the cylinder 20, the sheave 22 rises and the chain 23
The runner 14 connected to the runner 14 rises.

When the height of the elevating plate 11 reaches a position where it does not interfere with pulling out the bumper members 35A, 35B as shown in FIG. 4, the operating arm 50 starts to come into contact with the block 56 shown in FIG. 45 retracts and sends oil to the bumper drive hydraulic cylinder 41, and the rod of the cylinder 41 extends, and the left and right bumper members 35A, 35B are arranged in a straight line along the rear end surface of the box-shaped vehicle body 1 ( It is arranged parallel to the rear end surface) and functions as a bumper for the vehicle. At this time, bumper members 35A, 3
5B are connected and integrated using a connecting lock fitting 55.

As the runner 14 continues to rise, the elevating plate 11 and the side plate 12 reach the upper limit position, and the elevating plate 11 coincides with the floor surface of the box-shaped vehicle body 1. In this state, cargo can be efficiently transferred between the box-shaped vehicle body 1 side and the elevating plate 11.

When the vehicle is running, as shown in FIG.
is the upper limit position, close the rear door 2, and lift the elevator plate 1.
1 to the box-shaped car body.

In addition, when carrying out cargo handling work by raising and lowering the elevating plate 11 multiple times, the operating arm 50 is moved as shown in FIG. 7B.
The bumper members 35A, 3 are positioned on the imaginary line so as not to come into contact with the block 56 when the lifting plate 11 is raised, and each time the lifting plate 11 is raised and lowered during cargo handling, the bumper members 35A, 3
5B can be omitted from repeating opening and closing operations. In this case, if the operating arm 50 is returned to the solid line position shown in FIG. 7B after cargo handling is completed, the bumper members 35A and 35B can be taken out and arranged in a straight line as a bumper as shown in FIG. 4 while the vehicle is traveling.

(Effects of the invention) As explained above, the box-type vehicle body with a lifting device of the present invention has the elevator plate constituting the rear part of the floor surface and the side plates integrated therewith against both rear side walls of the box-type vehicle body. It can be raised and lowered freely, and has a structure in which the lift plate and side plates are raised and lowered using a cylinder provided on the box-shaped car body side, making it possible to carry out cargo handling operations efficiently when using a lifting device, and furthermore, eliminating the need for a lifting device. Sometimes the presence of a lifting device can be made unobtrusive.

Further, when the lifting device starts to be used, there is no need to perform operations such as pulling out the lifting plate, which was necessary in the conventional device, and there is an advantage that cargo handling work can be started immediately.

Furthermore, side plates are integrated on both sides of the lift plate to prevent cargo from collapsing during cargo handling operations.

In addition, the bumper member can be stored and pulled out as a bumper in conjunction with the operation of the lifting device, resulting in good operability.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a box-type vehicle body with an elevating device according to the present invention, in which the elevating plate is in a lowered state, Fig. 2 is a perspective view when the elevating plate is running, and Fig. 3 shows the mechanism part for elevating the elevating plate. FIG. 4 is a front view of the mounting part of the bumper member, FIG. 5 is a side view, FIG. 6 is a bottom view, and FIG. 7 is a side view showing the structure of the cylinder that serves as the hydraulic pressure source and its surroundings. FIG. 8 is a front view of the same. 1... Box-shaped vehicle body, 2... Rear door, 10...
Lifting device, 11... Lifting plate, 12... Side plate, 13
...Front edge plate, 14...Runner, 16...Runner guide frame, 20, 41, 45...Hydraulic cylinder, 2
2... Sheave, 23... Chain, 35A, 35
B...Bumper member, 38...Coil spring, 39
...Tail lamp, 50...Operation arm, 55...
...Connection lock fittings.

Claims (1)

[Claims for Utility Model Registration] Side plates 1 are provided on both sides of the elevating plate 11 that constitutes the rear part of the floor surface.
2 are integrated, runners 14 are fixed vertically to the back side of each side plate 12, and runner guide frames 16 are respectively fixed to the inside of the rear side walls 1A of the box-shaped vehicle body 1, and the runners 14 are moved vertically. By freely guiding the lifting plate 11 and the side plates 12 to the rear side walls 1A of the box-shaped vehicle body, the lifting plate 11 and the side plates 12 can be raised and lowered with respect to the rear side walls 1A of the box-shaped vehicle body. 12 is provided, and furthermore, a support member 3 is provided at the rear end of the box-shaped vehicle body 1.
6 is extended downward and attached, a pumper member is rotatably attached to the support member, and means for detecting the elevation of the elevating plate 11 is provided, and in conjunction with the detection result of the means for detecting the elevation, Driving means is provided for driving the bumper member so as to make it parallel to the side wall of the box-shaped vehicle body when the elevating plate is lowered, and to make the bumper member parallel to the rear end surface of the box-shaped vehicle body when the elevating plate is at its upper limit position. A box-shaped car body with a lifting device.