JPS6116179Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tailgate device for raising, lowering, and rotating a tailgate mounted on a freight vehicle.

Conventionally, in the case where the tailgate attached to the loading platform of a freight vehicle is also used as a lift for loading and unloading cargo, the height of the tailgate is limited, so the length of the platform is also limited. Therefore, there is a problem that long items cannot be loaded on the tailgate, and if the tailgate is rotatable and its tip is grounded and used as a spanning board, the Because the length of the board is limited, the inclination becomes large, and vehicle carriers that adopt this mechanism cannot be used for cars with low vehicle height such as racing cars, so long spanboards cannot be used. It was a hassle to have to use it separately.

Therefore, the present invention was developed in view of the above-mentioned conventional problems, and it is possible to extend the length of the platform beyond the height of the tailgate as necessary, so that even long items can be loaded and unloaded. and the tailgate can also be used as a lift.
Another object of the present invention is to provide a tailgate device that can also be used as a gangboard.

The present invention will be described below with reference to illustrative embodiments.

A is a tailgate attached to the rear end of the loading platform b of a freight vehicle A, and is composed of a gate body 11 and a plurality of auxiliary plates 12. It is designed so that it can be put in and taken out by twisting it. In addition, in the illustration, the auxiliary plate 12 is connected at the rear end to form an integral structure, but it may be made to be independent and put in and taken out separately. 13 is a guide roller provided on the beam member 14 of the gate body 11; 15;
is a guide rail fixed to the beam member 16 of the auxiliary plate 12. A support shaft 17 is fixed to the base end of the gate body 11, and the protruding ends on both sides of the support shaft 17 are attached to guide members 20 which are vertically movably mounted on guide rails 19 formed in both vertical parts of the rear frame 18 of the loading platform b. A rotating cylinder 21 of the tailgate a is pivotally attached to the lower end bent portion 20a of the tailgate and is pivotably pivoted within the guide member 20.
is pivotally connected via a connecting rod 21a and a link 22. With the above configuration, the tailgate a can be freely rotated by operating the operating lever (not shown) of the rotation cylinder 21 of the tailgate a. 23 is a guide roller provided on the guide member 20, and 24 is a holding chain that holds the gate body 11 in a horizontal position, one end of which is removably connected to the gate body 11 and the other end to the guide member 20. It is designed to stop.

Reference numeral 25 denotes a cylinder for vertically moving the tailgate a provided at the center of the lower surface of the floor at the rear of the loading platform b, and the connecting rod 25a of the cylinder 25 and the upper end of the guide member 20 are connected by a wire 26. An intermediate portion of the wire 26 is wrapped around a pulley 27 disposed on the rear frame 18. As a result, by operating the operating lever (not shown) of the vertical movement cylinder 25,
The guide member 20 can be moved up and down, and therefore the tailgate a can be moved up and down.

Now, when the tailgate a is used as a lift, first the operating lever of the rotation cylinder 21 is operated to rotate the tailgate a to a horizontal position. Note that the holding chain 24 is locked between them. Thereafter, the operation lever of the vertical movement cylinder 25 is operated to lower or raise the tailgate a while keeping it horizontal. In addition, when loading and unloading long objects, use the auxiliary plate 1 as necessary.
Pull out 2 and use it.

Further, when the tailgate a is used as a gangplank, it is only necessary to operate the operating lever of the rotation cylinder 21 and rotate the tailgate a until the tip of the tailgate a touches the ground. In this case, when loading and unloading low-height vehicles such as racing cars in vehicle transport vehicles, the auxiliary plate 12
It can be used by pulling out and making the slope of the gangplank gentler.

As described above, according to the present invention, the tailgate is composed of the gate main body and the auxiliary plate that can be taken in and out, so when the tailgate is used as a lift or a gangway, its effective length can be extended as necessary. Therefore, it can be widely used as a multi-use transport vehicle that is not affected by the shape of the cargo, such as loading and unloading long objects or transporting racing cars, etc.

[Brief explanation of the drawing]

Fig. 1 is a side view of a freight vehicle equipped with a tailgate according to the present invention, Fig. 2 is an enlarged side view of the main parts of the same partially cut away, Fig. 3 is a plan view of the tailgate, and Fig. 4 is the gate. FIG. 3 is a partially enlarged vertical cross-sectional view showing the relationship between the main body and the auxiliary plate. a is a tailgate, 11 is a gate body, 12 is an auxiliary plate, 17 is a support shaft, 18 is a rear frame, 20 is a guide member, 21 is a rotation cylinder, 22 is a link, 25 is a vertical movement cylinder,
26 is a wire.

Claims (1)

[Scope of utility model registration request] A guide member in which a cylinder for vertical movement of the tailgate is provided near the rear end on the underside of the floor of the loading platform, and the rotation cylinder for the tailgate is pivotably pivoted to guide rails formed on both vertical sides of the rear frame. is mounted so as to be movable up and down, and the guide member and the connecting rod of the vertical movement cylinder are connected by a wire, and the tailgate is composed of a gate main body and a plurality of auxiliary plates mounted so as to be removable in and out of the gate main body. The base end of the tailgate is rotatably connected to the lower end of the guide member by a support shaft, and both ends of the support shaft and the connecting rod of the rotation cylinder are rotatably connected via links. A tailgate device for a freight vehicle, which is characterized by the following: