JP2583554Y2 - Operating lever operating device for industrial vehicles - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The invention relates to a working machine operation lever device used for industrial vehicles such as forklift trucks and shovel loaders.

(Prior art) Conventionally, this type of industrial vehicle has a fork
Work machines such as attachments and buckets are mounted, and these work machines are used for loading and unloading earth and sand.

A work implement operation lever a as shown in FIG. 12 or 13 is provided in front of the operator seat.

The work implement operation lever a shown in FIG. 12 has a bracket c fixed to a dashboard b, the lower end of the operation lever a being pivotally mounted on a pin d by a pin d. The movement of the lever a is transmitted to the operating valve f provided in the working machine hydraulic circuit via the link e, and the operation of the working machine is controlled by the operating valve f.

On the other hand, a working machine operating lever a shown in FIG. 13 is elastically attached to a dashboard b via an elastic body g, and a lower end of the operating lever a is pivotally mounted on a bracket c by a pin d. The structure between f is connected via a link e in the same manner as described above, so that the vibration of the vehicle body is not transmitted to the operation lever a.

(Problems to be solved by the invention) In conventional industrial vehicles, the positions of the steering handle and the operator seat can be adjusted according to the physique and working posture of the operator, whereas the position of the work implement operation lever is Since it is fixed to the vehicle body, even when the steering handle or the operator seat is adjusted to the optimum position, the work implement operation lever does not become the optimum position, and thus the operator is tired at an early stage.

This invention has been made for the purpose of remedying the above-mentioned problems, and an object of the invention is to provide a working machine operating lever device for an industrial vehicle which can be easily adjusted to an optimum position.

(Means and Actions for Solving the Problems) The present invention has the following object to attain the above object.
The invention described above is a work machine operation lever device for an industrial vehicle in which a work machine operation valve is operated by a work machine operation lever to control a work machine mounted on a vehicle body, and the work machine operation lever is pivotally supported. Attaching the pin to the bracket so that it can be adjusted up and down, and enabling the pin to be appropriately fixed to the adjustment position by the locking means, the locking means is fixed to the pin side,
And a movable locking plate having serrated teeth on a surface facing the bracket, and a fixed locking plate fixed to the bracket side and having teeth engaged with the teeth of the movable locking plate. is there.

As a result, when the steering handle and operator seat are adjusted according to the physique and working posture of the operator,
The work implement operation lever can also be adjusted to the optimum position, thereby improving operability.

In the invention according to claim (2), the locking means is constituted by interposing a rubber between the movable locking plate fixed to the pin side and the bracket, and the position of the working machine operation lever is steplessly changed. It is designed to be adjustable.

(Embodiment) An embodiment of the present invention will be described in detail with reference to the drawings shown in FIGS.

In the figure, reference numeral 1 denotes a working machine operating lever of an industrial vehicle (not shown), the lower end of which is supported via a pin 4 on a bracket 3 attached to a dashboard 2.

The bracket 3 is provided with elongated holes 3a in the vertical direction, and the pins 4 are inserted through the elongated holes 3a so that both sides thereof protrude to both sides of the bracket 3. As shown in the figure, the serrated teeth 5a are provided on the bracket 3 side.
Is fixed by welding or other means.

A screw 4a at the other end of the pin 4 is formed, and a nut 6 having a knob 6a at one end is screwed to the screw 4a. The locking plate 5 is in contact with the teeth 5a facing the bracket 3 side.

The teeth 5a of the movable locking plate 5 are engaged with the teeth 7a of the fixed locking plate 7 fixed to both side surfaces of the bracket 3 along the long holes 3a.

On the other hand, a work implement operating valve 8 provided on a work implement hydraulic circuit path (not shown) is installed below the bracket 3.
The working machine operating valve 8 and the working machine operating lever 3 are connected by a link 9.

It should be noted that an anti-vibration structure in which an elastic body is interposed between the dashboard 2 and the bracket 3 may be used.

Next, the operation will be described. After the positions of the steering handle and the seat are adjusted to the optimum positions according to the physique and the working posture of the operator, the knob 6a is rotated to loosen the nut 6, and the movable locking plate 5 The engagement between the stop plates 7 is released.

In this state, the work implement operating lever 1 is adjusted upward or downward as indicated by the imaginary line in FIG. 1 and adjusted to an easily operable position.
Tighten.

As a result, when the work machine operating lever 1 is adjusted upward, the movable locking plate 5 is locked above the fixed locking plate 7 as shown in FIG.
As shown in the drawing, the position of the work implement operating lever 1 is fixed relative to the vehicle body in a state where the movable engaging plate 5 is engaged below the fixed engaging plate 7, so that the working implement operating lever is at the optimum position. 1 can be operated.

In the above-described embodiment, the position of the working machine operating lever 1 can be adjusted stepwise by using a toothed plate for the fulcrum shaft of the lever, as shown in FIGS. 5 to 7. The adjustment can be performed in a stepless manner by forming the plate at the same time.

That is, FIGS. 5 to 7 show drawings corresponding to FIGS. 2 to 4, respectively, and the same parts of the respective components are denoted by the same reference numerals, and detailed description thereof will be omitted.

In these figures, reference numeral 7 'denotes a rubber, which is provided between the bracket 3 and the movable locking plate 5.

With this configuration, it is possible to adjust the position of the work implement operation lever 1 steplessly.

8 to 11 show still another embodiment in which the adjustment can be performed steplessly.

 Hereinafter, this embodiment will be described in detail.

A movable bracket formed almost in an L-shape by pins 11 on the upper part of a bracket 3 attached to the dashboard 2
One end of 12 is pivotally connected, and the base end of the working machine operating lever 1 is pivotally connected by a pin 4 near the bent portion of the movable bracket 12.

The other end of the movable bracket 12 faces downward,
A boss 13 is attached to a lower end by a bolt 14.

Washer 15 and movable bracket 12 inserted in the bolt 14
An elastic body 16 made of rubber is interposed therebetween, and a collar 17 is inserted into the boss 13.

An adjusting screw 18 is screwed into the intermediate portion between the collar 17 and the boss 13 in a direction perpendicular to the axis of the boss 13.

One end of the adjusting screw 18 has a knob for rotating it
The other end is rotatably locked to a yoke 21 inserted into a support shaft 20 fixed to the bracket 3 via a snap ring 22.

A lock nut 23 is screwed on the knob 19 side of the adjusting screw 18.

The working machine operating lever 1 and the working machine operating valve 8 are connected by a link 9 as in the above embodiment.

Next, the operation will be described. To adjust the position of the working machine operation lever 1 upward, first loosen the lock nut 23, and then rotate the adjustment screw 18 with the knob 19 to move the movable bracket 12 around the pin 11. Pivots upward.

Thereby, the work implement operation lever 1 can be adjusted from the position indicated by the imaginary line in FIG. 7 to the position indicated by the solid line.

When adjusting the position of the work implement operation lever 1 downward, the knob 19 is used to rotate the adjustment screw 18 in the opposite direction to rotate the movable bracket 12 downward about the pin 11.

Thereby, the work implement operating lever 1 can be adjusted from the position shown by the imaginary line in FIG. 8 to the position shown by the solid line.

After adjusting the position as described above, the work implement operation lever 1 can be fixed at that position by tightening the lock nut 23.

(Effect of the invention) As described in detail above, when the steering handle and the operator seat are adjusted according to the physique and the working posture of the operator, the position of the working machine operation lever is adjusted stepwise or steplessly to the optimum position. Because we can do it,
The work machine operation lever can be operated in the most comfortable posture.

Even if a large force acts on the lever, the lever position does not shift, thereby improving the operability of the work implement operation lever, thereby improving work efficiency and reducing fatigue of the operator.

[Brief description of the drawings]

FIG. 1 is a side view of a working machine operating lever according to an embodiment of the present invention, FIG. 2 is a view taken in the direction of arrow II in FIG. 1, FIG. 3 and FIG. 7 to 7 show other embodiments of the working machine operating lever, which correspond to FIGS. 2 to 4, respectively. 8 to 11 show still another embodiment, FIG. 8 is a side view, FIG. 9 is a sectional view taken along the line IX-IX of FIG.
FIG. 11 and FIG. 11 are operation explanatory diagrams, and FIG. 12 and FIG. 13 are conventional explanatory diagrams. 1... Operating device operating lever, 3... Bracket 4... Pin 5... Movable locking plate 5 a... Tooth 7 fixed locking plate 7 ′ rubber 7 a tooth 8. Machine operation valve

Claims (2)

(57) [Scope of request for utility model registration] A work machine operation lever device for an industrial vehicle, wherein a work machine operation valve (8) is operated by a work machine operation lever (1) to control a work machine mounted on a vehicle body. Pin (4) for pivoting the machine operating lever (1)
To the bracket (3) so that it can be adjusted up and down,
A movable locking plate fixed to the pin (4) side and having serrated teeth (5a) on a surface facing the bracket (3) so that the locking means can be appropriately fixed to the adjustment position by the locking means; (5) and teeth (7a) fixed to the bracket (3) side and engaged with the teeth (5a) of the movable locking plate (5).
A working machine operating lever device for an industrial vehicle, comprising a fixed locking plate (7) having: 2. A work machine operation lever device for an industrial vehicle, wherein a work machine operation valve (8) is operated by a work machine operation lever (1) to control a work machine mounted on a vehicle body. Pin (4) for pivoting the machine operating lever (1)
To the bracket (3) so that it can be adjusted up and down,
The fixing means can be appropriately fixed to the adjustment position, and a rubber (7 ') is interposed between the movable locking plate (5) fixed to the pin (4) and the bracket (3). The position of the work implement operating lever (1) can be adjusted steplessly.
Operation lever operating device for industrial vehicles.