JPS6222431Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a gate plate rotation support mechanism for a vehicle cargo handling device, and in particular to a torsion bar used to reduce the weight when the gate plate rotates. This relates to the mounting structure.

[Conventional technology]

2. Description of the Related Art Conventionally, a spring or a torsion bar has been attached to a gate plate of a vehicle cargo handling device in order to reduce the weight of the gate plate when the gate plate rotates.

An example of this is the torsion bar described in detail in US Pat. No. 3,275,170. This torsion bar consists of two pairs of left and right torsion bars bent at approximately right angles. One end of each torsion bar is fixed to a lifting member attached to both sides of the vehicle, and the other end is fixed to the inside of a gate plate formed in a box shape. It has a structure that fits in.

[Problem that the invention attempts to solve]

However, since both ends of this type of torsion bar are fixed, when the torsion bar is first installed, it holds a certain amount of force, but after repeated use, the torsion bar wears out and the force exerted on the rotation of the gate plate increases. As a result, the original purpose of reducing labor has disappeared and the system has become useless. Such problems tend to become more apparent in the case where short torsion bars are used on both sides of the gate plate as described above.

Furthermore, in the case of automobiles, the torsion bar may be broken by a shock or the like during driving, and the conventional torsion bar has a complicated mounting structure, so there is a problem that it cannot be easily mounted and removed.

Furthermore, the difficulty in installing and removing the torsion bar meant that when an attachment was installed on the gate plate or when the size of the gate plate was changed, the strength of the torsion bar needed to be changed, which caused major problems.

The present invention was developed in view of the above circumstances, and is intended to provide a vehicle cargo handling device that is easy to install and remove, and that allows the strength of the torsion bar to be adjusted to a certain extent even if the torsion bar becomes flat or the weight of the gate plate changes. The object of the present invention is to provide a gate plate rotation support mechanism.

[Means to solve problems]

A gate plate rotation support mechanism for a vehicle cargo handling device according to the present invention, which achieves the above object, is configured to horizontally and A rotating support mechanism for a gate plate mounted so as to be able to rotate in a vertical direction, wherein both sides of the gate plate are fitted with a locking tube made of pipe material at the lower end of the elevating member and from both ends thereof. The plate is rotatably connected to the plate by a gate pin, and one of the gate pins is connected to a straight line having a length close to the width of the gate plate via a mounting bracket. One end of the torsion bar is removably connected, and the other gate pin is formed with a long hole and attached to the other end of the torsion bar, and has a double-sided milled part formed at the end so that a mounting bracket protrudes, and the other gate pin has a long hole formed therein and is attached to the other end of the torsion bar. An engaging adjusting plate is attached to the milling cutter portion, and the adjusting plate has a screw hole formed therein so that it can be attached to the elevating member at a different angle.

Here, the double-sided milling section refers to a section where both sides of the cross section of the member are substantially parallel.

[Effect]

In the gate plate rotation support mechanism for a vehicle cargo handling device according to the present invention, the gate plate is rotatably connected to a lifting member that can be raised and lowered by a pair of gate pins, and one end of a torsion bar is connected to one gate pin. Since a long hole is formed in the other gate pin and a mounting bracket attached to the other end of the torsion bar protrudes, the torsion bar can be easily taken out and replaced with another torsion bar. be.

Further, a double-sided milling part is formed at the end of the mounting bracket attached to the other end of the torsion bar,
Furthermore, since an engaging adjustment plate is attached to the double-sided milling section, it is possible to change the attachment angle of the torsion bar and attach it to the elevating member.

〔Example〕

Next, an embodiment embodying the present invention will be described with reference to the attached drawings to provide an understanding of the present invention.

Here, FIG. 1 is a plan sectional view showing the main part of the gate plate rotation support mechanism of a vehicle cargo handling device according to an embodiment of the present invention, and FIG. 2 is a plan view of a vehicle cargo handling device using the above embodiment. A rear perspective view, FIG. 3 is a side view of the gate plate rotation support mechanism of the vehicle cargo handling device according to the above embodiment, and FIG. 4 is an enlarged view of the section A in FIG. 3.
FIG. 5 is a plan view of the torsion bar used in the above embodiment, and FIGS. 6 and 7 are plan views of the gate pin used in the above embodiment.

As shown in FIGS. 2 and 3, lifting members 13 and 14 are mounted on both sides of the opening 11 of the vehicle cargo handling device 10 and are driven up and down by cylinders 12, which are power sources. The lifting member 13,1
A gate plate 15 is rotatably attached to the gate plate 4 so as to be rotatable in horizontal and vertical directions. The lifting members 13, 14 have a T-shaped cross section as shown in FIG. are fitted with outer rollers 20 and inner rollers 21, respectively, so as to slide on the columns 16 and 17.

A gate plate rotation support mechanism of a vehicle cargo handling device according to an embodiment of the present invention is applied to the attachment of the gate plate 15, and will be described in detail below.

Both sides of the gate plate 15 are connected to the elevating member 1.
A locking pipe 22 made of pipe material is attached to the lower end of 3 and 14,
It is rotatably attached by gate pins 26 and 27 which are fitted from 23 and both ends and are connected to the gate plate 15 by pins 24 and 25.

The gate pin 27 has a mounting bracket 2 at its end.
8 is attached to the linear torsion bar 29
One end of the 5th one is removably connected.
As shown in the figure, the mounting bracket 28 attached to the end of the torsion bar 29 has a double-sided milled part 30 formed at its end so as to fit into the groove 31 of the gate pin 27 shown in FIG. It's summery. In addition, in FIGS. 6 and 7, the holes 32,
Reference numeral 33 indicates a stopper hole formed for fitting the pins 24 and 25.

As shown in FIG. 6, the other gate pin 26 has an elongated hole 34 formed therein, and is attached to the other end of the torsion bar 29 so that a fitting 35 passes through it.

The other end of this mounting bracket 35 has a double-sided milling section 3.
7 is formed, and the double-sided milled portion 37 is adapted to protrude from the gate pin 26, as shown in FIG. Also, in Fig. 5, arrow b
and c each show a cross section of the mounting bracket 35.

An adjustment plate 38 as shown in FIG. 4 is attached to this double-sided milling part 37, and screw holes 39 (three in the embodiment) are formed in the adjustment plate 38 so that bolts 40 and nuts (not shown) can be inserted through the adjustment plate 38. It is adapted to be fixed to the elevating member 13.

Here, since three screw holes are formed in the adjustment plate 38, the mounting angle of the torsion bar 29 can be changed depending on the strength of the torsion bar 29.

Since the gate plate rotation support mechanism of the vehicle cargo handling device according to the above embodiment is configured as described above, when opening the gate plate 15 to the rear, the torsion bar 2
9 will be twisted, and therefore the load will be reduced.

When the torsion bar 29 is to be removed, it can be easily removed by removing the adjustment plate 38 via the bolt 40 and pulling the torsion bar 29 toward you.

[Effect of idea]

As is clear from the above explanation, the gate plate rotation support mechanism of the vehicle cargo handling device according to the present invention is provided with a mounting bracket having a double-sided milled part formed at the end of the torsion bar, and one end of the mounting bracket is connected to the gate pin. The torsion bar is fixed by attaching an adjustment plate to the double-sided milled part of the protruding mounting bracket, so that the torsion bar can be easily adjusted by removing the adjustment plate that is fixed with the screws. This makes it possible to easily replace the torsion bar if it breaks during use or if a heavier attachment is attached to the gate plate.

In addition, the strength of the torsion bar can be adjusted by changing the mounting angle of the adjustment plate that fixes the torsion bar, and even if the torsion bar becomes worn out due to repeated use, the mounting angle can be adjusted appropriately. By changing it, the torsion bar could be regenerated.

Furthermore, since the torsion bar is made of a single long bar, the elastic range can be maintained at a larger angle than the short bent torsion bar of the conventional example. This results in less fatigue and longer life compared to a torsion bar that is arranged in a conventional manner.

[Brief explanation of the drawing]

FIG. 1 is a plan sectional view showing the main parts of a gate plate rotation support mechanism of a vehicle cargo handling device according to an embodiment of the present invention, and FIG. 2 is a rear perspective view of a vehicle cargo handling device using the above embodiment. , Fig. 3 is a side view of the gate plate rotation support mechanism of the vehicle cargo handling device according to the above embodiment, Fig. 4 is an enlarged view of the section A in Fig. 3, and Fig. 5 is used in the above embodiment. Top view of torsion bar,
6 and 7 show plan views of gate pins used in the above embodiment. Explanation of symbols, 10...Vehicle cargo handling device, 11...
...opening, 12... cylinder, 13, 14...
Lifting member, 15... Gate plate, 16, 17...
Pillar, 22, 23... Locking pipe, 24, 25... Pin, 26, 27... Gate pin, 28, 35...
Mounting bracket, 29...Torsion bar, 30, 37
...Double-sided milling part, 34...Elongated hole, 38...Adjustment plate, 39...Screw hole.

Claims (1)

[Scope of utility model registration request] A rotation support mechanism for a gate plate that is attached so as to be able to rotate horizontally and vertically to an elevating member that is driven up and down by cylinders that are power sources provided on both sides of an opening of a vehicle cargo handling device. , both sides of the gate plate are rotatably connected to the lower end of the elevating member by a locking tube made of pipe material and a gate pin that is fitted from both ends and connected to the gate plate by a pin. In addition, one end of a linear torsion bar having a length close to the width of the gate plate is removably connected to one of the gate pins via a mounting bracket, and the other gate pin has a long hole formed therein. A mounting bracket is attached to the other end of the torsion bar and has a double-sided milled part formed at the end so that the mounting bracket protrudes, and an adjustment plate that engages is attached to the double-sided milled part of the mounting bracket, and the adjustment plate has a screw hole formed therein. A gate plate rotation support mechanism for a vehicle cargo handling device, characterized in that the mechanism is adapted to be attached to the elevating member at different angles.