JPH0524595Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention has a box-shaped vehicle body (a cargo box called a bunhoday) for storing cargo that is mounted on the chassis of a truck. The present invention relates to a box-type vehicle body equipped with a lifting device.

(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. 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 existence of the lifting device does not become a hindrance when the device is not in use.

The present invention comprises: a box-shaped vehicle body having a rear opening and a notch formed in the rear floor surface along the rear opening; a rear door attached to the rear opening frame of the box-shaped vehicle body; An elevating plate that functions as a rear floor surface of the elevating type corresponding to the notch, side plates integrated on both sides of the elevating plate, and vertically arranged on the back side of each side plate and fixed to both sides of the elevating plate. with the runner who was
A runner guide frame is fixed to the inner side of both rear side walls of the box-shaped car body body and guides the runner in a vertically movable manner, and a runner guide frame is arranged between the both side walls and the side plate and is pivoted to the side wall side. a sheave that is pivotally supported on the tip end side of the piston rod of the cylinder and is guided to move vertically by the runner guide frame; and a sheave that is suspended by the sheave and has one end fixed to the liner. and a lifting device having a rope or a chain whose other end is fixed to the side wall, and the sheave is raised and lowered by the cylinder to drive the lifting plate and the side plate up and down.

(Function) In the box-type car body with a lifting device of the present invention, the lifting plate constituting the rear part of the floor surface and the side plates integrated therein are vertically movable up and down with respect to both rear side walls of the box-type car body body. There is no need to store or pull out the lift plate, and by lowering the lift plate and landing it, 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. For example, cargo stacked in multiple stages on a lift plate may protrude from the side edge of the lift plate and come into contact with the side wall of a box-shaped car body, causing the cargo to collapse, or may get caught on the side wall and interfere with the lifting and lowering movement of the lift plate. There is no risk of it happening.

(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.

In FIGS. 1 to 3, reference numeral 1 denotes a box-shaped vehicle body mounted on the chassis of a truck, and has a rear opening. A double door rear door 2 is pivotally attached to a rear opening frame 3 of the box-shaped vehicle body 1 via a hinge 4.

Further, the rear floor surface along the rear opening of the box-shaped vehicle body 1 is a notch, and the elevating plate 11 of the elevating device 10 is arranged as a rear floor surface corresponding to the notch 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. When not in use, the front edge plate 13 is raised up as shown in Fig. 3 so as not to obstruct the closing of the rear door 2, and during cargo handling operations when the bottom surface of the elevating plate 11 touches the ground, it can be raised and lowered as shown in Fig. 1. The plate 11 is tilted toward the tip side so that the tip lands on the ground, making it easy to carry in a cart or the like. Note that the elevating plate 11 is a combination structure of a steel plate and a reinforcing square pipe fixed to the back surface of the steel plate. Square pipes 12A for attaching side plates are erected and fixed on both sides of the elevating plate 11.
The side plate 12 is fixed with bolts or the like, and the elevating plate 11 and the side plate 12 are integrated. Square pipe 12A
The lower part and the elevating plate 11 are fixed with bolts or the like.

In the elevating device 10, as shown in FIGS. 1, 3, and 6, there are side plates 1 on both sides of the elevating plate 11.
The lower end of a long square runner 14 is fixed with a pin 14A (or bolt) so as to be disposed vertically on the back side of the runner 2. 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, as shown in FIGS. 3, 7, and 8, runner guide frames 16 are fixed to the inner sides of both side walls 1A of the box-shaped vehicle body 1, and guides that slide on the inner surfaces of the runner guide frames 16 are fixed. A roller 15 guides a pivotally mounted runner 14 so as to be movable in the vertical direction. 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 body 1 by a pin 20B, and a connecting plate 21 is pivotally attached to the tip of a rod 20A of the cylinder 20. Two sheaves (pulleys) 22 on the left and right are pivotally supported by.
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. 21 is made easier to ascend and descend. Mechanisms such as the cylinder 20, sheave 22, and chain 23 for lifting the elevating plate 11 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,
As shown in FIGS. 4 and 5 (enlarged illustration of circle P in FIG. 2), the locking portion 31 at the end of the locking rod 30, which is pivoted in the vertical direction on the outer surface of the door, is attached to the box-shaped vehicle body. This is done by engaging a locking metal fitting 32 fixed to the rear opening frame 3 of the main body 1 and the end face of the lifting plate 11 of the lifting device 10. At this time, a stopper piece 33 is attached to the lower end of the locking rod 30 by welding or the like. It is fixed, and at the same time as the rear door 2 is closed and locked, the stopper piece 33 is pressed against the lower surface of the elevating plate 11 to lock it so that the elevating plate 11 does not fall during traveling.

A mounting member 35 is fixed to the outer surface of the rear door 2 in the vertical direction as shown in FIG. 2, and a binder 36, a tail lamp 37, etc. are attached to the lower part of the mounting member 35. However, the bumper 36 is divided into two parts, and the left half of the bumper is fixed to the mounting material 35 of the left door, and the right half of the bumper is fixed to the mounting material 35 of the right door.

In the configuration of the above embodiment, during cargo handling work,
Rotate the locking rod 30 of the rear door 2 by 90 degrees as shown by arrow R from the state shown in FIGS.
Disengage the locking metal fitting 32 from the stopper piece 3.
3 from the lift plate 11 and open the rear door 2 as shown in FIG. In this state, by retracting the rod 20A of the hydraulic cylinder 20 (recirculating the oil in the cylinder to the hydraulic power source), the sheave 22 is lowered.
The runner 14 connected to the chain 23 descends, and the elevating plate 11 fixed to the runner 14 and the side plate 12 integrated therewith descend, and the lower surface of the elevating plate 11 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 elevating plate 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 rises, the lifting plate 11 and the side plate 12 reach the upper limit position, and the lifting plate 1
1 coincides with the floor surface of the box-shaped vehicle body main body 1. In this state, cargo can be efficiently transferred between the box-shaped vehicle main body 1 side and the elevating plate 11.

When the vehicle is running, as shown in FIG.
with the rear door 2 closed and the locking rod 30 in the state shown in FIGS. 4 and 5.
is engaged with the locking fitting 32, and the stopper piece 33
Press the bottom of the lifting plate 11 to lock it.

FIGS. 9 and 10 show another embodiment of the present invention, in which a bumper or the like is provided on the back side of the lifting plate 11 of the lifting device 10 so that it can be stored freely instead of providing the bumper on the rear door side. In these figures, a bumper member 41 is pivotally attached to a reinforcing rib 40 on the back side of the elevating plate 11 with a pin 42.
When the lift board lands, it will automatically be stored on the back side of the lift board. In this case, when the elevating plate 11 is raised, that is, when the vehicle is running, the bumper member 41 hangs under its own weight under the elevating plate and functions as a bumper.
It should be noted that the tail lamp may be placed on the rear door side or the like, and the other configurations are the same as those of the previous embodiment.

(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 is vertically movable and has a structure in which the elevating plate and side plates are raised and lowered by cylinders installed on the box-shaped car body side, making it possible to carry out cargo handling operations efficiently when the elevating device is used, and further when the elevating device is not in use. In this case, the presence of the lifting device can be avoided. Further, when the lifting device starts to be used, there is no need for work such as pulling up and down the lifting plate, which was necessary with 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. For example, if there is no side plate, cargo stacked in multiple stages on the elevating plate may protrude from the side edge of the elevating plate and come into contact with the side wall of the box-shaped car body when the elevating plate is raised or lowered, causing the cargo to collapse, or the cargo may get caught on the side wall. Although there is a risk of interfering with the elevating and lowering operation of the elevating plate, such a risk can be avoided.

[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 an enlarged front view showing the mechanism for locking the rear door, Fig. 5 is a bottom view of the same, Fig. 6 is a bottom view of the elevating plate and associated parts, and Fig. 7 is the runner. Plane sectional view of the upper part of the guide frame,
FIG. 8 is a plan cross-sectional view of the intermediate portion of the runner guide frame and its peripheral portion, FIG. 9 is a side view showing the configuration of a bumper member in another embodiment of the present invention, and FIG. 10 is a bottom view thereof. DESCRIPTION OF SYMBOLS 1... Box-shaped vehicle body main body, 2... Rear door, 10... Lifting device, 11... Lifting plate, 12... Side plate, 13... Front edge plate,
14...Runner, 16...Runner guide frame, 20...Hydraulic cylinder, 22...Sheave, 23...Chain.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A box-shaped vehicle body 1 having a rear opening and a notch formed in the rear floor along the rear opening, and a rear opening frame of the box-shaped vehicle body 1. 3, an elevating plate 11 that corresponds to the notch and functions as an elevating rear floor surface, side plates 12 integrated on both sides of the elevating plate, and a rear door attached to the back side of each side plate 12. Runners 14 arranged in the vertical direction and fixed to both sides of the elevating plate 11; and runners fixed to the inner side of the rear side walls 1A of the box-shaped vehicle body 1 and guiding the runners 14 so as to be movable in the vertical direction. The guide frame 16 and the both side walls 1A
and a cylinder 20 disposed between the side plate 12 and pivoted to the side wall, and a cylinder 20 pivoted to the tip end of the piston rod of the cylinder and guided to move vertically by the runner guide frame 16. a lifting device 10 having a sheave 22 and a rope or chain suspended by the sheave 22 and having one end fixed to the runner 14 and the other end fixed to the side wall 1A side; A box-type vehicle body with a lifting device characterized in that the sheave 22 is raised and lowered to drive the lifting plate 11 and the side plate 12 up and down. (2) The lifting device according to claim 1, wherein the rear door is pivotally attached to the rear opening frame, and a bumper and a tail lamp are provided on a mounting member extending downward from the rear door. Box-type car body. (3) A bumper member 41 is pivotally attached to the reinforcing rib 40 on the back side of the elevating plate 11, and when the elevating plate descends and lands, the bumper member is stored on the back side of the elevating plate, and the elevating plate rises. A box-shaped vehicle body with an elevating device according to claim 1 of the utility model registration claim, which is configured to sag when the vehicle body is lowered.