JPH11314896A - Fixing device for cylinder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To carry out the installing and removing work of a cylinder at a low position. SOLUTION: By combining a lower bracket 3 fixed on a body 2 at the rear part of a fork lift, and an upper bracket 6 loaded on the lower bracket 3, through links 4 and 5, a base member loading and fixing a bomb 1 is formed rotatable around a pin 14, as well as the upper bracket 6 is inclined by moving and rotating to the rear side, and after the upper bracket 6 is inclined by moving and rotating to the rear side, the base member is moved and rotated around the pin 14 so as to hang down the base member along the rear surface 2a of the body 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylinder fixing device, and more particularly to a forklift truck equipped with an LPG (liquefied petroleum gas) cylinder, driving an engine using the LPG as a fuel, and performing a predetermined cargo handling operation. This is useful when applied to industrial vehicles such as a forklift.

[0002]

2. Description of the Related Art Some forklifts run on LPG as fuel and perform predetermined cargo handling work. This type of forklift is shown in FIGS.
(B). As shown in both figures, it is necessary to mount a cylinder 1 in which LPG is sealed in the forklift, and the cylinder 1 is usually mounted on the upper surface of the body 2 above the counterweight at the rear of the forklift. The forklift is disposed at right angles to the front-rear direction. Further, the cylinder 1 can move rearward while being mounted on the forklift.

That is, as shown in FIGS. 7 (a) and 7 (b) in which the portion A in FIG.
A lower bracket 3 is disposed on the upper surface of the lower bracket 3, and an upper bracket 6 is disposed on the lower bracket 3 via links 4 and 5. The cylinder 1 is fixedly mounted on the upper bracket 6 with a belt 7. The links 4 and 5, together with the upper bracket 6 and the lower bracket 3, constitute a four-bar linkage. As a result, the cylinder 1 shown in FIG.
By releasing the lock mechanism 8 from the normal mounting position shown in FIG. 7A and pulling it behind the forklift, the forklift can be turned and moved rearward. As shown in FIG. Of the body 2 can be located behind the rear surface 2a. The cylinder 1 emptied by moving the cylinder 1 to the rear position is L
When filling the PG, the work of removing the cylinder 1 from the upper bracket 6 becomes easy. The cylinder 1 is detached by releasing the clamp 9 to release the fixing of the cylinder 1 by the belt 7.

[0004] Further, it is necessary to form the cylinder 1 so as to be movable backward in order to prevent interference between the seat 10 and the cylinder 1. That is, during maintenance and inspection of the engine, the engine cover 11 is rotated and opened in the rearward direction of the forklift, but since the seat 10 and the engine cover 11 are integrally formed, the cylinder is opened. When the cover 1 is in the normal mounting position, the seat 10 comes into contact with the cylinder 1 with the rotation of the engine cover 11 and the engine cover 11 cannot be further opened. By avoiding such interference, the engine cover 1
In order to open the cylinder 1 sufficiently, the cylinder 1 is configured to be able to move backward as described above.

[0005]

In the prior art as described above, the operation of mounting the cylinder 1 on the upper bracket 6 and the operation of removing the cylinder 1 from the upper bracket 6 must be performed at the level of the upper surface of the body 2 of the forklift. No. That is, the worker of the work must lift the cylinder 1 to the height of the upper surface of the body 2 when mounting the cylinder 1, and must lift the cylinder 2 when removing the cylinder 1. Cylinder 1 from the height of the upper surface
Must be held down. Such an operation is a heavy muscle operation, and causes lower back pain of the worker. By the way, cylinder 1 is 50K when LPG is filled.
g, which is about 30 kg even when empty.

SUMMARY OF THE INVENTION In view of the above-mentioned prior art, it is an object of the present invention to provide a cylinder fixing device which enables mounting and dismounting of a cylinder at a low position.

[0007]

The structure of the present invention that achieves the above object has the following features.

1) Connecting a lower bracket fixed to a horizontal surface such as a body at the rear of a vehicle such as a forklift truck and an upper bracket mounted on the lower bracket via a four-bar linkage. By
The upper bracket is configured so that it can be tilted by moving and rotating backward, and one corner is supported by a pin that is mounted vertically on the upper bracket when mounted on the lower bracket. After providing a base member that is rotatable around the lever pin, and that mounts the cylinder horizontally and secures it, moves and rotates the upper bracket backward and tilts it. And rotating the base member around the pin so that the base member can be hung down along the rear surface of the body.

According to the present invention, when the cylinder is removed, the upper bracket is moved and rotated rearward to be tilted,
Accordingly, by rotating the similarly inclined base member around the pin, the cylinder together with the base member hangs down along the rear surface of the body of the forklift, and can be removed after being set in a vertical state.

2) A lower bracket fixed to a horizontal surface such as a rear body of a vehicle such as a forklift truck, and an upper bracket mounted on the lower bracket are connected via a four-bar linkage. By
The upper bracket is configured so that it can be tilted by moving and rotating backward, and one corner is supported by a pin that is mounted vertically on the upper bracket when mounted on the lower bracket. After providing a base member that is rotatable around the lever pin, and that mounts the cylinder horizontally and secures it, moves and rotates the upper bracket backward and tilts it. By rotating the base member around the pin, the base member can be hung down along the rear surface of the body, and the hung base member is raised slightly upward to exceed the dead point. And an elastic member for applying a rotational force to the base member to lift the base member upward.

According to the present invention, when the cylinder is removed, the upper bracket is moved backward and pivoted to incline,
Accordingly, by rotating the inclined base member around the pin, the cylinder together with the base member is hung down along the rear surface of the body of the forklift, and can be removed after being set in a vertical state. In addition, when mounting the cylinder, the cylinder is mounted and fixed on the base member in a hanging state, and then the base member is slightly rotated upward, and the spring force of the elastic member acts on the base member to move upward. It becomes an assist force when rotating.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a side view showing an embodiment of the present invention.
FIG. 2 is a rear view, and FIG. 3 is a plan view thereof. These figures respectively show a normal state in which the cylinder 1 is placed and fixed on a forklift by the fixing device according to the present embodiment. As shown in these figures, a lower bracket 3 is disposed on the upper surface of the body 2, and an upper bracket 6 is disposed on the lower bracket 3 via links 4 and 5. This configuration is similar to that of the prior art shown in FIG. 6, but in this embodiment, a flat supporting plate 12 is fixed to the upper surface of the upper bracket 6, and the base member 13 is fixed to the supporting plate 12 in a horizontal plane. It is supported rotatably. That is, the base member 13 is rotatably supported on the pin 14 about the vertical axis via the right rear corner.
The cylinder 1 is mounted on a base member 13 and fixed to the base member 13 by a belt 7 and a clamp 9 as in the prior art. As a result, the cylinder 1 is normally placed horizontally on the base member 13 so that the axial direction is orthogonal to the front-rear direction of the forklift.

Here, the upper bracket 6 is provided with a lock mechanism 8.
Thus, the base member 13 is locked so as not to move with respect to the support plate 12 by the lock mechanism 16.

A base end of a horizontal rod 17 extending horizontally so as to be parallel to the axial direction of the cylinder 1 in a normal state mounted on a forklift is fixed to the upper bracket 6. The pin 14 is attached to the distal end portion of the device via a support member 18. Thus, the base member 1
3, after the lock mechanism 8 is released and the upper bracket 6 is moved / rotated and tilted integrally with the upper bracket 6 with the backward movement / rotation of the upper bracket 6, the state shown in FIG. By releasing the lock mechanism 16 and rotating about the axis of the pin 14, as shown in FIG.
It is configured to hang down along the rear surface 2a.

One end of the gas spring 19 has a support plate 12.
The other end is rotatably attached to the right front portion of the base member 13. The gas spring 19 is compressed in the normal state shown in FIGS. 1 to 3 and generates a spring force in the extension direction. From this state, the state shown in FIG. 4 is reached. After passing through this state, and before reaching the state shown in FIG. 5, the gas spring 19 is initially compressed and shrunk. The state shown in FIG. 5 is obtained in the extended state. In such a state, the spring force of the gas spring 19 acts to maintain this state of the base member 13. On the other hand, from this state, the base member 13 is pinned against the pin 14 against the spring force of the gas spring 19.
When the gas spring 19 exceeds the dead point with this rotation, the spring force in the extension direction of the gas spring 19 assists the upward rotation power in this case. It works as power.

In this embodiment, when refilling the cylinder 1 with LPG, the lock mechanism 8 is released in the state shown in FIGS. 1 to 3 and the upper bracket 6 is moved rearward with respect to the lower bracket 3. It is moved and rotated to be tilted to the state shown in FIG. Thereafter, the lock mechanism 16 is released and the base member 13 is pivoted about the pin 14 so that the base member 13 is hung down along with the cylinder 1 along the rear surface 2a of the body 2 of the forklift.
To the state shown in. In this state, the clamp 9 is released, the fixing of the cylinder 1 by the belt 7 is released, and the cylinder 1 is removed. Between the state shown in FIG. 4 and the state shown in FIG. 5, the gas spring 19 is initially compressed and contracted,
After contracting most at the dead point in the middle, the state shown in FIG. In such a state, the spring force of the gas spring 19 acts to maintain this state of the base member 13.

After the cylinder 1 is filled with LPG, the cylinder 1 is mounted on the base member 13 shown in FIG. 5 and the base member 13 is turned upward against the spring force of the gas spring 19. , The gas spring 1
When 9 exceeds the dead point, this gas spring 1
The spring force in the extension direction by 9 acts as a turning force assisting the upward turning force in this case, and the state shown in FIG. 4 can be easily achieved. In this state, the lock mechanism 1
6, the base member 13 is fixed to the support plate 12, and the base member 13 is rotated and moved forward together with the upper bracket 6 to be in a normal state shown in FIG.

[0019]

As described in detail with the above embodiments, the invention described in [Claim 1] is characterized in that a lower bracket fixed to a horizontal surface such as a body at a rear portion of a vehicle such as a forklift truck, By connecting the upper bracket mounted on the bracket to the upper bracket via a four-bar link mechanism, the upper bracket can be moved and rotated rearward to be tilted and mounted on the lower bracket. One corner is supported by a pin that is vertically attached to the upper bracket when it is placed, and it can be rotated around this pin, and the cylinder is placed horizontally and fixed. After the upper bracket is moved and pivoted rearward to incline, the base member is pivoted around a pin to thereby provide the base member. When the cylinder is removed, the upper bracket is moved backward and rotated to tilt, and the base member that is also tilted is rotated around the pin when removing the cylinder. By doing so, the cylinder together with the base member can be hung down along the rear surface of the body of the forklift, brought into a vertical state, and then removed. For this reason, the removal work can be performed at a fixed position, the force required for the work can be reduced correspondingly, and it is also effective as a measure against back pain of the worker.

According to the invention described in claim 2, a lower bracket fixed to a horizontal surface such as a body at a rear portion of a vehicle such as a forklift truck and an upper bracket mounted on the lower bracket are divided into four sections. The upper bracket can be moved and rotated backward and tilted by connecting via the link mechanism, and it is attached vertically to the upper bracket when placed on the lower bracket A base member that supports one corner with a pin that is rotatable around this pin, and that mounts a cylinder horizontally and fixes it, After being moved and rotated to tilt, the base member is rotated around the pin so that the base member can be hung down along the rear surface of the body. Further, since an elastic member is provided to give the base member upward power by pulling up the hanging base member slightly upward and passing the dead point beyond the dead point, the upper bracket is used when removing the cylinder. Move and rotate backward to tilt,
In addition to this, not only can the cylinder be hung down along the rear surface of the body of the forklift, and the cylinder can be removed after rotating the inclined base member about the pin along the rear surface of the forklift body. When mounting the cylinder, the cylinder is mounted and fixed to the hanging base member, and then the base member is pivoted slightly upward, so that the spring force of the elastic member acts on the base member to rotate upward. It becomes the assist force when moving. For this reason, not only can the same operation and effect as the invention described in [Claim 1] be exhibited, but also when the cylinder is remounted, it is necessary to rotate the cylinder slightly upward after mounting the cylinder on the base member. The operation force required for this operation can be significantly reduced.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is a rear view showing the embodiment of the present invention.

FIG. 3 is a plan view showing an embodiment of the present invention.

FIG. 4 is a side view showing the embodiment of the present invention, and shows a state in which the cylinder is moved backward and rotated and tilted from the state shown in FIG. 1;

FIG. 5 is a side view showing the embodiment of the present invention, and shows a state in which the cylinder is turned around a pin and is set upright from the state shown in FIG. 4;

FIG. 6A is a side view showing a forklift according to the related art, and FIG. 6B is a plan view thereof.

FIG. 7 is a drawing in which a portion A is extracted and enlarged in order to explain a moving state of a portion A in FIG. 6;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 cylinder 2 body 2 a rear surface 3 lower bracket 4, 5 link 6 upper bracket 13 base member 14 pin 19 gas spring

Claims (2)

[Claims] 1. A lower bracket fixed to a horizontal surface such as a rear body of a vehicle such as a forklift truck and an upper bracket mounted on the lower bracket are connected via a four-bar linkage. With this, the upper bracket is configured to be able to move and rotate backward and tilt by tilting, and one corner portion is vertically attached to the upper bracket while being mounted on the lower bracket. Provide a base member that supports and can rotate around this pin, and also mounts and fixes the cylinder horizontally, and moves and rotates the upper bracket backward and tilts it. After
A cylinder fixing device, characterized in that the base member can be hung down along a rear surface of the body by rotating the base member around a pin. 2. A lower bracket fixed to a horizontal surface such as a rear body of a vehicle such as a forklift truck, and an upper bracket mounted on the lower bracket are connected via a four-bar linkage. With this, the upper bracket is configured to be able to move and rotate backward and tilt by tilting, and one corner portion is vertically attached to the upper bracket while being mounted on the lower bracket. Provide a base member that supports and can rotate around this pin, and also mounts and fixes the cylinder horizontally, and moves and rotates the upper bracket backward and tilts it. After
By rotating the base member around the pin, the base member can be hung down along the rear surface of the body. Further, the hung base member can be pulled up slightly to exceed the dead point. An apparatus for fixing a cylinder, comprising: an elastic member for applying a rotational force for lifting the base member upward to the base member.