JPS6340346Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a cargo handling machine suitable for mounting on a van-type vehicle with double doors.

General van-type vehicles with double doors have double-door locks and double-door lock holders protruding from the rear, so when conventional cargo handling equipment is installed, the lift plate that is raised and lowered by the link mechanism and the van-type vehicle A gap of more than a certain amount will be created between the vehicle body and the floor surface. For this reason,
If no measures are taken, it will be inconvenient to move cargo using a trolley or to move a loaded object with a trolley.

For this reason, conventionally, as shown in FIGS. 1 to 4, a span plate has been rotatably attached to the floor side of the vehicle body of a van-type vehicle.

FIG. 1 shows a structure adopted by a company other than the applicant in an ordinary van-type vehicle, in which a span plate 3 is attached to a floor plate 2 of a vehicle body 1 by a hinge so as to be rotatable through 180 degrees. When using the cargo handling machine 4 attached to the rear end of a van-type vehicle, the span plate 3 is folded down to the side of the elevating plate 6 which is raised and lowered by the link mechanism 5, and the elevating plate 6 and the floor plate 2 of the vehicle body 1 are connected. This eliminates the gap between the two, allowing cargo handling work to be carried out using carts, etc. In addition, when closing the double door 7 on the rear side of the vehicle body 1, after tilting the span plate 3 180 degrees to the floorboard side, fit the double door lock 8 into the double door lock receiver 9 and close the double door 7.
Close.

FIG. 2 shows a conventional structure adopted by the present applicant, in which the span plate 3A is rotatable by 90 degrees to the floor plate 2 of the vehicle body 1.
installed on. When the double door 7 is closed, the spanning board 3A is held down by the cushion rubber 10 inside the double door. In addition,
The operation of the cargo handling machine 4 when in use is the same as that shown in FIG. 1.

Figure 3 shows a structure in which a span plate is provided on the body of a refrigerated or refrigerated vehicle, which is used by other companies. In this figure, the gangplank 3B is also
It is attached to a heat insulating material 21 provided inside the vehicle body 20 so as to be rotatable by 180 degrees. Note that a heat insulating material 22 is also provided on the inside of the double door 7, and the action of the span plate 3B when the cargo handling machine 4 is used is the same as that shown in FIG. 1.

Figure 4 shows the structure adopted by the applicant,
A span plate 3C is attached to the heat insulating material 21 inside the body 20 of the refrigerated vehicle or the refrigerated vehicle so as to be rotatable by 90 degrees,
When the double door 7 is closed, the span plate 3C is pressed by cushion rubber 23. Note that a heat insulating material 22 is also provided on the inside of the double door 7, and the action of the span plate 3C when the cargo handling machine 4 is used is the same as that shown in FIG. 2.

On the other hand, instead of using double doors on van-type vehicles, a folding door 30 as shown in FIG. Other companies have proposed a structure in which the rear opening of the vehicle is closed, and the present applicant has proposed a structure in which the lifting plate 6 of the cargo handling machine 4 itself is used as a part of the door, and the remaining part is used as a springboard, as shown in FIG. A structure with a raised door 32 has been proposed.

In the case of FIGS. 5 to 7, there is no need to attach a spanning board. However, in the case of refrigerated trucks and refrigerated trucks where airtightness and insulation are important, Figures 5 to 7
The structure shown in the figure is not suitable, and a double door is used.
We had no choice but to adopt a structure with a spanning board as shown in Figures 3 or 4.

In view of the above points, the present invention does not require any modification to the body floor surface of van-type vehicles with double doors, etc., and the gap between the elevator plate and the vehicle body floor surface is sufficiently reduced when the elevator plate is in the raised position. The purpose of the present invention is to provide a cargo handling machine that enables cargo handling using a cart or the like.

Embodiments of the cargo handling machine according to the present invention will be described below with reference to the drawings.

In FIGS. 8 to 10, a cargo handling machine 4A is attached to the rear of a van-type vehicle A with double doors.
A frame 40 of this cargo handling machine 4A is fixed to the rear part of a chassis 41 of a van type vehicle A as shown in Fig. 9, and within the frame receives hydraulic pressure from a power unit operated by a battery attached to the van type vehicle. cylinder is installed. A rotating shaft 42 that receives rotational force from this cylinder is rotatably supported by the frame 40, and rotating side plates 43 are fixed to both sides of the rotating shaft 42. One end of a tension arm 44 is rotatably attached to the frame 40, and the other end is attached to the vertical arm 4.
5 and is pivotally connected to the elevating plate 6A via a pin 46. One end of a lift arm 47 is rotatably attached to the rotating side plate 43, and the other end is connected to the vertical arm 45 with a pin 48. and,
A length adjustment rod 49 is connected between the intermediate portion of the lift arm 47 and the rotating side plate 43. With such a parallel link mechanism, as the rotation shaft 42 rotates, the elevating plate 6A is raised and lowered while keeping it horizontal.

The elevating plate 6A is mounted on the vehicle body 1 as shown in FIG.
An extension plate part 50 extending in two directions of the floor plate is fixed to one end by welding or the like, and the part facing the vertical arm 45, lift arm 47, and tension arm 44 is connected to the extension plate part 50 through a hinge 51. As shown in FIGS. 11 and 12, a bent extension plate portion 52 is rotatably connected to the upper side of the elevating plate 6A. This bent extension plate portion 52 is held in a horizontal state by a supporting bracket 53 in a normal horizontal lifting state as shown in FIG.

The position of the double door lock receiver 9, which fits into the double door lock 8 for locking the double door 7 on the rear surface of the vehicle body 1, is different from the conventional position so that the extension plate part 50 of the elevating plate 6A does not come into contact with it. Place it in a slightly lowered position.

As a result of the above, when the lifting plate 6A is at the same height as the car body floor as shown in FIG. It can be used to carry out cargo handling work. After cargo handling is completed, under normal running conditions, the lift plate 6A is vertically erected by the opening/closing mechanism as shown in FIG. Since the bent extension plate portion 52 is in a bent state, it does not interfere with the movement of the lift arm 47 and the tension arm 44.

In addition, it is good also as a structure where the whole extension plate part is bendably connected to the elevating plate.

As explained above, according to the cargo handling machine of the present invention, in the configuration in which the elevating plate is mounted on the rear of the vehicle body and is raised and lowered by a link mechanism, an extension plate portion extending in the direction of the floor surface of the vehicle body is attached to the elevating plate. Since the extension plate is fixed or connected and at least the portion of the extension plate facing the arm of the link mechanism is configured as a rotatable bending extension plate, the following effects can be obtained.

(1) There is no need to perform special processing such as spanboards on the floor side of the vehicle body, and it can be easily installed on general van-type vehicles with double doors.

(2) Opening/closing (folding) of gangplank during cargo handling
This eliminates the need for additional operations, allowing cargo handling operations to be carried out more efficiently.

(3) There is no overlap between the elevating plate and the spanning board, and the area of the elevating plate is expanded, so the elevating plate can be used effectively.

(4) Since there is no spanboard inside the vehicle body, the interior length of the vehicle body can be used effectively.

(5) It does not require a spanboard and is extremely suitable for installation in refrigerated cars and freezer cars.

(6) Since the dimensions of the extension plate are smaller than when installing a conventional span plate, it is lightweight;
Construction costs are also low.

[Brief explanation of the drawing]

Figures 1 and 2 are side sectional views showing a configuration in which a conventional cargo handling machine is attached to a van-type car with double doors and a span plate is provided on the vehicle body side, and Figures 3 and 4 are side sectional views of a conventional cargo handling machine. Side sectional views showing a configuration in which the cargo handling machine is attached to a refrigerated truck or a refrigerated truck and a span plate is provided on the vehicle body side, and Figures 5 to 7 show a configuration in which another door is provided instead of the double door. Fig. 8 is a side sectional view showing the overall configuration of the embodiment of the cargo handling machine according to the present invention, and Fig. 9 shows the main part of the embodiment, with the lifting plate in a horizontal state. Fig. 10 is a side sectional view with the elevating plate standing vertically, Fig. 11 is a bottom view showing the main parts of the elevating plate;
FIG. 12 is a sectional view of the same essential part. 1... Vehicle body, 2... Floor plate, 4, 4A... Cargo handling machine, 6, 6A... Elevating plate, 7... Double door, 50
...Extension plate part, 52...Bending extension plate part.

Claims (1)

[Scope of utility model registration request] In a cargo handling machine that is disposed at the rear of a vehicle body and raises and lowers a lifting plate using a link mechanism, an extension plate portion extending in the direction of the floor surface of the vehicle body is fixed to or connected to the lifting plate, and the extension plate portion At least the portion of the link mechanism that faces the arm is configured with a folded extension plate that is rotatable relative to the elevating plate, thereby eliminating the need for a span plate at the rear end of the vehicle body floor surface and the gap between the elevating plates. A cargo handling machine that is characterized by: