JP3422685B2 - Cylinder fixing device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for fixing a cylinder, and more particularly to a forklift truck (LPG (liquefied petroleum gas) cylinder mounted on the forklift truck (LPG) that drives the engine to run while carrying out a predetermined cargo handling operation. It is useful when applied to industrial vehicles such as forklifts).

[0002]

2. Description of the Related Art Some forklift trucks use LPG as fuel and carry out predetermined cargo handling work. This type of forklift is shown in FIGS.
It shows in (b). As shown in both figures, it is necessary to mount a cylinder 1 in which the LPG is enclosed in the forklift, but the cylinder 1 is usually above the counterweight at the rear part of the forklift and has an axial direction on the upper surface of its body 2. It is arranged so as to be perpendicular to the front-rear direction of the forklift. 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 of FIG. 6 (a) is extracted and enlarged, the body 2
A lower bracket 3 is disposed on the upper surface of the above, and an upper bracket 6 is disposed on the lower bracket 3 via links 4 and 5. The cylinder 1 is fixed to and 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 link mechanism. As a result, the cylinder 1 is shown in FIG.
By releasing the lock mechanism 8 from the normal mounting position shown in (a) and pulling the forklift rearward, the forklift can be rotated and moved rearward. As shown in FIG. 7 (b), the cylinder 1 is moved to the forklift truck. The body 2 can be located rearward of the rear surface 2a. By moving the cylinder 1 to the rear position, L is attached to the empty cylinder 1.
It becomes easy to remove the cylinder 1 from the upper bracket 6 when filling the PG. The cylinder 1 is removed by removing the clamp 9 to release the fixation of the cylinder 1 by the belt 7.

Further, it is necessary to form the cylinder 1 so as to be movable rearward in order to prevent the seat 10 and the cylinder 1 from interfering with each other. That is, the structure is such that the engine cover 11 is rotated and opened rearward in the forklift at the time of maintenance and inspection of the engine, but since the seat 10 and the engine cover 11 are integrally formed, When 1 is in the normal mounting position, the seat 10 contacts the cylinder 1 as the engine cover 11 rotates, and the engine cover 11 cannot be opened any further. Avoiding such interference, the engine cover 1
In order to fully open the cylinder 1, the cylinder 1 can be moved backward as described above.

[0005]

In the prior art as described above, the work of mounting the cylinder 1 on the upper bracket 6 and the work of removing it from the upper bracket 6 must be performed at a height position of the upper surface of the body 2 of the forklift truck. I won't. That is, the operator of the work must hold the cylinder 1 up to the height position of the upper surface of the body 2 when mounting the cylinder 1, and the body 2 when removing the cylinder 1. Cylinder 1 from the height of the upper surface of
I have to carry down. Such work is a heavy-duty work and has been desired to be improved because it may cause a backache of the worker. By the way, the cylinder 1 is 50K when filled with LPG.
g, even if it is empty, the weight is about 30 kg.

The present invention has been made in view of the above-mentioned prior art, and an object of the present invention is to provide a device for fixing a cylinder capable of mounting and removing the cylinder at a low position.

[0007]

The structure of the present invention for achieving the above object is characterized by the following points.

1) A lower bracket fixed to a horizontal surface of a rear body of a vehicle such as a forklift truck and an upper bracket placed on the lower bracket are connected via a four-bar linkage mechanism. Due to
The upper bracket is constructed so that it can be moved and rotated backward to tilt it, and one corner is supported by a pin that is vertically attached to the upper bracket when mounted on the lower bracket. After providing a base member that can be rotated around the lever and that can mount and fix the cylinder horizontally, move and rotate the upper bracket backward and tilt it. The base member can be hung along the rear surface of the body by rotating the base member around the pin.

According to the present invention, when the cylinder is detached, the upper bracket is moved / rotated backward and tilted,
Along with this, by similarly rotating the tilted base member around the pin, the cylinder together with this base member can be hung down along the rear surface of the body of the forklift truck to be in a vertical state and then removed.

2) A lower bracket fixed to a horizontal surface of 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 mechanism. Due to
The upper bracket is constructed so that it can be moved and rotated backward to tilt it, and one corner is supported by a pin that is vertically attached to the upper bracket when mounted on the lower bracket. After providing a base member that can be rotated around the lever and that can mount and fix the cylinder horizontally, move and rotate the upper bracket backward and tilt it. By rotating the base member around the pin, the base member can be hung along the rear surface of the body, and the hanging base member can be pulled up slightly above the dead point. Thus, an elastic member is provided for applying a turning force for pulling the base member upward by this.

According to the present invention, when the cylinder is removed, the upper bracket is moved / rotated backward and tilted,
Along with this, by similarly rotating the tilted base member around the pin, the cylinder together with the base member can be hung down along the rear surface of the body of the forklift truck to be in a vertical state and then removed. Also, when mounting the cylinder, mount the cylinder on the base member in a suspended state and fix it, and then rotate this base member slightly upward, the spring force of the elastic member acts on the base member and moves upward. It becomes the assisting force when rotating.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a side view showing an embodiment of the present invention,
2 is a rear view thereof, and FIG. 3 is a plan view thereof. These drawings respectively show the normal state in which the cylinder 1 is placed and fixed on the forklift by the fixing device according to the present embodiment. As shown in these drawings, a lower bracket 3 is arranged on the upper surface of the body 2, and an upper bracket 6 is arranged on the lower bracket 3 via links 4 and 5. This structure is similar to that of the conventional technique shown in FIG. 6, but in this embodiment, a support plate 12 which is a flat plate is fixed to the upper surface of the upper bracket 6, and the base member 13 is in a horizontal plane with respect to this support plate 12. It is rotatably supported by. That is, the base member 13 is rotatably supported by the pin 14 around the vertical axis through the corner portion on the right rear side thereof.
The cylinder 1 is placed on the base member 13 and is fixed to the base member 13 by the belt 7 and the 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.

The upper bracket 6 has a lock mechanism 8
Thus, the base member 13 is locked so as not to move with respect to the lower bracket 3, and 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 portion of a horizontal rod 17 which extends 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, and the horizontal rod 17 is fixed. A pin 14 is attached to the tip of the via a support member 18. Thus, the base member 1
After the lock mechanism 8 is released and the upper bracket 6 is moved / rotated rearward, the lock mechanism 8 is moved / rotated integrally with the upper bracket 6 to incline and become the state shown in FIG. , The lock mechanism 16 is released and the pin 14 is rotated about the axis of the pin 14, so that as shown in FIG.
It is configured to hang down along the rear surface 2a.

The gas spring 19 has a support plate 12 at one end.
And the other end is rotatably attached to the right front part of the base member 13. The gas spring 19 is compressed in the normal state shown in FIGS. 1 to 3 to generate a spring force in the extension direction. From this state, the state shown in FIG. 4 is reached, and thereafter, during this state, until reaching the state shown in FIG. 5, the gas spring 19 is first compressed and contracted, and then contracts the most at a dead point in the middle, and then slightly. The extended state is as shown in FIG. In such a state, the spring force of the gas spring 19 acts so as to maintain this state of the base member 13. On the other hand, from this state, the base member 13 is pinned to the pin 14 against the spring force of the gas spring 19.
When the gas spring 19 exceeds a dead point due to this rotation when it slightly rotates upward, the spring force of the gas spring 19 in the extending direction assists the upward rotation force in this case. It works as a power source.

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. Move / rotate and tilt to obtain the state shown in FIG. After that, by releasing the lock mechanism 16 and rotating the base member 13 around the pin 14, the base member 13 is suspended along with the cylinder 1 along the rear surface 2a of the body 2 of the forklift truck.
Set to the state shown in. In this state, the clamp 9 is released to release the fixing of the cylinder 1 by the belt 7, and the cylinder 1 is removed. From the state shown in FIG. 4 to the state shown in FIG. 5, the gas spring 19 is initially compressed and contracts,
After contracting most at a dead point on the way, the state shown in FIG. In such a state, the spring force of the gas spring 19 acts so as 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 in the state shown in FIG. 5, and the base member 13 is rotated upward against the spring force of the gas spring 19. , With this rotation, 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 that assists 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
The base member 13 is fixed to the support plate 12 by 6 and is rotated and moved forward together with the upper bracket 6 to be in the normal state shown in FIG.

[0019]

As described above in detail with the embodiments, the invention described in [Claim 1] includes a lower bracket fixed to a horizontal surface of a rear body of a vehicle such as a forklift truck and the like. By connecting the upper bracket mounted on the bracket with the four-bar link mechanism, the upper bracket can be moved / rotated backward and tilted, and mounted on the lower bracket. With the pin vertically attached to the upper bracket in the mounted state, one corner is supported and can be rotated around this pin, and the cylinder can be mounted horizontally and fixed. The base member is provided, and the upper bracket is moved and rotated backward to incline the base member, and then the base member is rotated around the pin. Since it is configured so that it can hang down along the rear surface of the body, when removing the cylinder, the upper bracket is moved and rotated backward to tilt, and with this, the similarly tilted base member is rotated around the pin. By doing so, the cylinder together with the base member can be hung down along the rear surface of the body of the forklift truck to be in a vertical state and then removed. Therefore, the detaching work can be performed at a fixed position, and the force required for the work can be reduced by that amount, which is also effective as a countermeasure for the back pain of the worker.

According to the second aspect of the present invention, a lower bracket fixed to a horizontal surface of a body of a rear portion of a vehicle such as a forklift truck and an upper bracket placed on the lower bracket are four-sectioned. By connecting via the link mechanism of, the upper bracket can be moved and rotated backward and tilted, and it is also attached vertically to the upper bracket when it is mounted on the lower bracket. One corner is supported by a pin that can be rotated around this pin, and a base member that mounts and fixes the cylinder horizontally is provided, and the upper bracket is rear After tilting by moving and rotating the base member around the pin, the base member can be hung down along the rear surface of the body by rotating the base member around the pin. In addition, an elastic member was added to the base member so that the hanging base member is pulled up slightly and the dead point is exceeded to pull up the base member upwards.Therefore, when removing the cylinder, the upper bracket Tilt backwards by moving and rotating
Along with this, by similarly rotating the tilted base member around the pin, the cylinder along with this base member hangs along the rear surface of the body of the forklift truck and can be removed after it is in a vertical state. , When mounting the cylinder, mount and fix the cylinder on the base member in a suspended state, and then rotate this base member slightly upward, and the spring force of the elastic member acts on the base member to rotate it upward. It becomes the assisting force when moving. Therefore, not only can the same effects and advantages as those of the invention described in [Claim 1] be exhibited, but when the cylinder is reattached, it is possible to mount the cylinder on the base member and then rotate it slightly upward. The operation force required for this work can be significantly reduced.

[Brief description of 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, showing a state in which the cylinder is moved and rotated backward from the state shown in FIG. 1 and tilted.

FIG. 5 is a side view showing an embodiment of the present invention, showing a state in which the cylinder is rotated around a pin to stand vertically from the state shown in FIG.

FIG. 6 is a side view (a) and a plan view (b) showing a conventional forklift.

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

[Explanation of symbols]

1 cylinder 2 body 2a rear side 3 Lower bracket 4,5 links 6 Upper bracket 13 Base member 14 pin 19 gas spring

Claims (2)

(57) [Claims] 1. A lower bracket fixed to a horizontal surface of 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 mechanism. The upper bracket is configured so that it can be moved and rotated backward to incline, and one corner is attached by a pin that is vertically attached to the upper bracket when it is mounted on the lower bracket. A base member that supports and can rotate around this pin, and that mounts and fixes the cylinder horizontally is provided, and the upper bracket is moved and rotated backward to tilt it. After
A cylinder fixing device, characterized in that the base member can be hung along the rear surface of the body by rotating the base member around a pin. 2. A lower bracket fixed to a horizontal surface of 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 mechanism. The upper bracket is configured so that it can be moved and rotated backward to incline, and one corner is attached by a pin that is vertically attached to the upper bracket when it is mounted on the lower bracket. A base member that supports and can rotate around this pin, and that mounts and fixes the cylinder horizontally is provided, and the upper bracket is moved and rotated backward to tilt it. After
By rotating the base member around the pin, the base member can be hung along the rear surface of the body, and the hanging base member can be pulled up slightly above the dead point. A cylinder fixing device, characterized in that an elastic member is provided for applying a turning force for pulling the base member upward to the base member.