JPH1089154A - Gas cylinder holding device for industrial vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lower the exchanging position of a gas cylinder. SOLUTION: A supporting frame 4 on which a cylinder retaining frame 5 is assembled in such manner that it can be drawn out to a point side, is rotatable on a basic end as a fulcrum, the cylinder retaining frame 5 comprises a stopper 7 to be rocked to the supporting frame 4 with the minimum drawing length, a part lower than the rotating fulcrum, of the supporting frame 4, and a slot 8a of a guide plate fixed to the cylinder retaining frame 5, are connected with a supporting rod 9, and the supporting rod 9 is positioned on an end part of the slot at the side where the cylinder retaining frame 5 keeps the minimum drawing length, to retain the supporting frame in the horizontal position, when the cylinder retaining frame 6 is rocked. When the cylinder is exchanged, the stopper 7 is released, and the cylinder retaining frame 5 is rotated downward while shifted in the drawing direction, and further lowered by the amount corresponding to the slot 8a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas cylinder holding device for mounting propane gas for fuel on a machine base in an industrial vehicle represented by, for example, a forklift.

[0002]

2. Description of the Related Art In an industrial vehicle, since it is difficult to secure a space for accommodating a gas cylinder in a machine stand, the gas cylinder is often externally mounted. In a forklift, as a gas cylinder holding device for mounting a gas cylinder by an external means, a cylinder holding frame 5 is horizontally and horizontally mounted on a bracket 18 fixed to a pillar 2 as illustrated in FIG. In the case of mounting vertically downward and changing the position, it is necessary to
As shown in (b), first, it is rotated horizontally from the mounting position on the counterweight W to protrude to the side, and then rotated downward while being protruded to the side, and the cylinder holding frame 5 is rotated.
Is positioned along the side surface of the counterweight W, the fastening means is released and removed at that position, and the newly replaced gas cylinder is set to the mounting position in the reverse order.

[0003]

Although the replacement position is lower than the mounting position on the counterweight, it is still quite high from the ground, so it is difficult to lift a heavy gas-filled cylinder to the replacement position. I do.

[0004]

SUMMARY OF THE INVENTION The present invention relates to a gas cylinder holding device which lowers the cylinder replacement position and facilitates the replacement operation. The gas cylinder holding device is rotatable in a vertical direction about a base end edge as a fulcrum. The cylinder holding frame is attached to the support frame such that the cylinder holding frame can be pulled out in the distal direction, and a portion below the rotation fulcrum of the support frame and an appropriate portion of the cylinder holding frame are connected to one or both ends thereof. Both ends are rotatably connected by a connecting member having a slide mechanism to any one of the above-mentioned portions, and at least the cylinder holding frame is at a minimum drawing length position between the support frame and the cylinder holding frame. A locking stopper is provided, and the movement range of the slide mechanism is locked at a position where the cylinder holding frame has a minimum drawing length. From the position to maintain the horizontal posture at,
By removing the stopper, the cylinder holding frame is directed obliquely downward while the cylinder holding frame is being pulled out, and the cylinder holding frame facing the obliquely downward direction is positioned between a position where the cylinder holding frame is pulled out to the maximum length. The connecting member has one end formed along the lower part of the cylinder holding frame, and the other end of the connecting rod pivotally attached to a portion of the object to which the support frame is attached below a pivot point of the support frame. Or by connecting with the slide mechanism that makes the inside of the elongated groove slidable, providing buffer means between the support frame and the cylinder holding frame, and lowering the holding frame When rotating in the direction, it can be configured to be pressed in the pull-out direction by the connecting member based on the difference between the rotating locus of the cylinder holding frame and the rotating locus of the connecting member. Note that the minimum or maximum draw-out length of the cylinder holding frame is not a length that can be physically pulled out or pushed into the support frame, but a length determined in advance according to a vehicle to be implemented. Say.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of a gas cylinder holding device according to the present invention implemented in a forklift will be described with reference to the drawings. FIG. 1 is an exploded view of a cylinder holding device, wherein 1 is a vertically protruding plate portion 1a, 1
a hinge base fixed to the side surface of the pillar 2 and having horizontal plate portions 3a, 3a corresponding to the projecting plate portions 1a, 1a of the hinge base above and below the substrate; A hinge bracket provided with vertical plate portions 3b, 3b. The hinge bracket 3 is secured to the hinge base 1 with the protruding plate portions 1a, 3a overlapped with each other so as to be freely movable horizontally. . 4 is a horizontal pipe 4 orthogonal to the guide pipes 4a, 4a.
b and connect the intermediate portions to each other with the reinforcing plate 4c.
And the support frame 4
Are vertical plate portions 3a, 3
In a state where both ends of the horizontal pipe 4b are applied to the opposing surfaces of the vertical plate portions 3a, 3a, the shaft is fixed by being vertically rotatable.

On the support frame 4, slide cylinders 5a, 5 which are externally inserted into the respective guide pipes 4a, 4a on both sides are provided.
The cylinder holding frame 5 formed by connecting the distal ends of the cylinders a to each other with the flat plate 5b and fixing the cylinder receiving plates 5c, 5c across the two slide cylinders 5a, 5a is assembled to the intermediate part so as to be able to be pulled out in the distal direction. ing. A pin hole 6 is formed in the slide cylinder 5a of the cylinder holding frame 5 at a substantially central position with respect to the pull-out direction of the slide cylinder 6a. A pin hole 6 'and 6 "are formed on the tip end side, respectively, and the cylinder holding frame 5 is provided in the slide cylinder 5a.
The spring length protrudes between the pin holes 6, 6 'and 6, 6 "where the pull-out lengths of the pin holes coincide at the minimum and maximum positions, respectively. A locking stopper 7 is provided.

A guide plate 8 having a long groove 8a parallel to the slide cylinder 5a is fixed to the slide cylinder 5a of the cylinder holding frame 5, and a base member is connected to the long groove 8a as a connecting member. An end of a support rod 9 pivotally pivoted with its end portion below a pivot point of the support frame of the vertical plate portion 3b of the hinge bracket 3 as a fulcrum, is slidable along the long groove 8a. It is connected with a mechanism. The length of the support rod 9 can be changed by a turnbuckle mechanism. The slidable movement range of the slide mechanism is such that the cylinder holding frame is locked at a position where the cylinder holding frame has a minimum draw-out length. From the position to maintain the horizontal posture, remove the stopper and pull out the cylinder holding frame while facing diagonally downward, and the position to maintain the state where the cylinder holding frame facing diagonally downward is pulled out to the maximum length. It has been adjusted to be between. Further, a hydraulic damper 10 as a buffering means is mounted between the hinge bracket 3 and the support frame 5, and is completed as shown in FIG.

According to the cylinder holding device thus formed, if the cylinder holding frame 5 is locked by the stopper 7 at the minimum drawing length position with respect to the support frame 4, the tip of the support rod 9 becomes Support rod 9 in long groove 8a
The cylinder holding frame 5 is located at the base end of the
It is maintained in a horizontal posture by the support rod 9 (FIG. 3A).
At the cylinder mounting position, the cylinder holding frame 5 is fixed in a horizontal position as described above by appropriate means, and when the cylinder is replaced, the cylinder holding frame 5 is horizontally rotated so as to protrude outward from the counterweight. After the movement, the stopper 7 is removed. When the stopper 7 is removed, the cylinder holding frame 5 tries to rotate downward integrally with the support frame 4 by its own weight, and as a result, the difference in the rotation trajectory between the support rod 9 and the cylinder holding frame 5 is reduced. Accordingly, the cylinder holding frame 5 is rotated while being pushed obliquely downward while being pushed in the pulling-out direction by the reaction force generated relatively to the support rod 9 (FIG. 3B). At this time, since the cylinder holding frame 5 is slowly lowered by the action of the hydraulic damper 10, the operability is excellent, and at the position where the cylinder holding frame 5 is pulled out by a predetermined length, the stopper 7 is inserted into the pin hole 6 formed in the slide cylinder 5a.
And the other pin hole 6 "formed in the guide pipe 4a, the cylinder holding frame 5 is locked and the rotation is stopped. After the rotation is stopped When the stopper 7 is removed again, all of the weight of the cylinder holding frame 5 (including the weight of the cylinder when the cylinder is mounted) concentrates in the tip direction, and the cylinder holding frame 5 is the largest drawer whose tip approaches the ground. (C in FIG. 3), whereby the replacement position is further lowered, the gas cylinder is tilted, the bottom on the raised side is placed on the lower end of the cylinder holding frame, and it is simply pushed firmly. After the cylinder has been replaced, the operation is reversed, that is, the lock is released and the cylinder holding frame 5 is pushed up, and the state shown in FIG. The stopper is removed once and then locked again by removing the stopper 7 and turning it to the horizontal position to lock it at the minimum withdrawal length position, and finally turning it horizontally and feeding it to the mounting position. For fixing to the frame, a well-known cylinder fastening means is used.

The lowering operation of the cylinder holding frame includes:
In addition to omitting the pin hole 6 ", adjust the strength and sliding resistance of the hydraulic damper so that the pin hole 6" can be lowered at a stroke to the maximum withdrawal length without stopping on the way. Alternatively, another pin hole other than the pin holes 6 ′ and 6 ″ of the above-described embodiment may be provided at an intermediate position between the pin holes, and lockable at a total of three positions. A pressure damper or a coil spring may be employed, or the buffer means itself may be omitted.

In the apparatus of the embodiment, the connecting member has a structure having a slide mechanism for sliding the distal end of the support rod along the long groove formed in the cylinder holding frame, so that the structure is simple and excellent in reliability. It can be said that, for example,
4A, a combination of a pin 11 protruding from the hinge bracket 3 and a long groove 13 formed in the support rod 12, or a rail 14 along the cylinder holding frame 5 as shown in FIG. And a slider 15 movable along the rail 14 is used.
As shown in FIG.
A similar effect can be expected even if a mechanism for slidably inserting and supporting the rod 17 is used, and the connecting member can be appropriately changed. The slide mechanism is not limited to both ends of the connecting member,
It may be provided at any part between both ends. Further, the cylinder holding frame is not limited to a type in which the space between pillars is used as a mounting position as in the embodiment and is rotated substantially 180 degrees horizontally as shown in FIG. As shown in FIG. 5B, two cylinders are mounted on the counterweight W so as to be arranged in a V-shape, or remain horizontal without being horizontally rotated from the rear mounting position as shown in FIG. 5C. The present invention is also applicable to a type in which the counterweight W is directly rotated downward and rearward. Further, the structure for assembling the cylinder holding frame to the support frame so as to be able to be pulled out is not limited to the embodiment.

It is also possible to provide stoppers at a plurality of positions and lock them at desired positions.
The type of cylinder to be installed and the maximum drawer length are
It can be set freely and applied to industrial vehicles other than forklifts.

[0012]

According to the present invention, since it has a simple structure that effectively utilizes a connecting member having a slide mechanism, it can be manufactured at low cost, maintenance is easy, and the cylinder replacement position is low. As a result, the burden required for cylinder replacement work can be reduced. Further, since the connecting means has a structure in which the tip of the support rod can freely move along the long groove, the simple structure is rich in reliability, and the provision of the buffer means allows the cylinder to be slowly lowered. Excellent operability.

[Brief description of the drawings]

FIG. 1 is an explanatory view of an example in which a cylinder holding device according to the present invention is applied to a forklift, which is disassembled into individual members.

FIG. 2 is an explanatory view of the assembled cylinder holding device.

FIGS. 3A, 3B, and 3C are explanatory diagrams of the operation.

FIGS. 4A, 4B, and 4C are explanatory views showing modified examples of a connecting member.

FIGS. 5A, 5B, and 5C are explanatory diagrams showing examples of arrangement at the mounting position of a gas cylinder.

FIG. 6 is an explanatory diagram of a conventional example.

7A and 7B are explanatory diagrams of a conventional example.

[Explanation of symbols]

1. hinge base, 1a projecting plate part, 2 pillar, 3 hinge bracket, 3a horizontal plate part, 4
-Support frame, 4a-Guide pipe, 4b-Horizontal pipe, 4c-Reinforcement plate, 5-Cylinder holding frame, 5a-Slide cylinder, 5b-Flat plate, 5c-Cylinder receiving plate, 6, 6 ', 6 "pin hole, 7 stopper, 8 guide plate, 8a long groove, 9 support rod, 1
0 ... hydraulic damper, 11 ... pin, 12 ... support rod, 1
3 ·· Long groove, 14 ·· Rail, 15 ·· Slider, 16
..Bearing members, 17 rods, 18 brackets, W counterweights.

Claims (4)

[Claims] 1. A cylinder holding frame is attached to a support frame rotatable in a vertical direction about a base end edge as a fulcrum so that the cylinder holding frame can be pulled out in a distal direction, and a portion below a rotation fulcrum of the support frame and the cylinder holding frame are provided. A suitable portion of the frame for use is connected to either one of its ends or any portion between both ends thereof by a connecting member having a slide mechanism so that both ends thereof are rotatable, and the support frame and the cylinder holding frame are connected to each other. A stopper that locks at least the cylinder holding frame at the minimum pull-out length position is provided between each other, and the movement range of the slide mechanism is set at a position where the cylinder holding frame is locked at the minimum pull-out length. From the position to maintain the horizontal posture, remove the stopper, pull out the cylinder holding frame, face diagonally downward, A gas cylinder holding device in which a cylinder holding frame that faces obliquely downward is maintained at a position where the cylinder holding frame is pulled out to a maximum length. 2. One end of the connecting member is connected to a lower end of a cylinder holding frame by connecting the other end of a connecting rod pivotally attached to a portion below a rotation fulcrum of the support frame in an object to be mounted on the support frame. The gas cylinder holding device according to claim 1, wherein the gas cylinder holding device is configured by being connected with the slide mechanism that makes the inside of the formed long groove slidable. 3. The gas cylinder holding device according to claim 1, wherein a buffer is provided between the support frame and the cylinder holding frame. 4. The holding frame is pressed in the pull-out direction by the connecting member based on a difference between a turning locus of the cylinder holding frame and a turning locus of the connecting member when the holding frame is turned downward. The gas cylinder holding device according to any one of claims 1 to 3, wherein: