JPH0752198Y2 - Control device for power work machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Use The present invention relates to a control device for a power work machine such as a backhoe.

(B) Conventional technology Conventionally, in a power work machine such as a backhoe, a hand operation lever provided at a position in front of an armrest of a driver's seat actuates a working portion by operating in a cross shape in the front-rear direction and the left-right direction of the machine body. Exists.

(C) Problems to be solved by the invention However, although the driver operates the above-mentioned hand operation lever by moving his / her wrist, the hand operation lever has a cross shape in the front-rear direction and the left-right direction of the machine body. Since it operates, it does not match the movement of the wrist, and therefore, wrist and shoulder fatigue occurs during driving operation.

(D) Means for Solving the Problems In the present invention, a control device for a power industrial machine in which a control box is located on both left and right sides in front of an armrest of a driver's seat and a hand operation lever is provided at an upper end of the control box , The hand operation lever can be operated in a cross shape, and the hand operation lever can be freely fixed by rotating the hand operation lever with respect to the axis, and the left and right hand operation levers can be extended in the left-right operation direction extension line. It is an object of the present invention to provide a control device in a power work machine, wherein the intersection is deviated to the driver side from a line connecting the centers of the left and right hand operation levers.

(E) Action / effect The driver can turn the swing base to the left and right by operating the left hand operation lever in a cross shape and move the arm of the excavation part back and forth. By gripping the hand operation lever of and operating it in a cross shape, it is possible to operate the excavation bucket or operate the boom up and down.

Further, the left and right hand operation levers are operated in a state of being respectively turned inward with respect to the axis, and therefore, the left and right hand operation levers are cross-shaped in accordance with the natural movement of the wrist by the driver. Therefore, the driving operation is easy, and the wrist and shoulder fatigue can be prevented.

In addition, the driving operation can be surely performed, and various works can be efficiently performed.

(F) Embodiments An embodiment of the present invention will be described in detail with reference to the drawings. In the overall side view of FIG. 1, (A) shows a backhoe as a power working machine, and a traveling frame having a crawler traveling device (1). A swivel base (3) is erected at approximately the center of (2), a swivel frame (4) is mounted above the base (3) so as to be swivelable left and right, and a prime mover is mounted at the rear of the frame (4). Part (5),
An operating unit (6) is arranged in the central part.

And the bracket (7) is attached to the front end of the frame (4).
And the base end of the excavation work section (B) is continuously provided.

The excavation work section (B) pivotally supports the boom support (8) on the bracket (7) so that the boom support (8) can be rotated left and right, and the boom (9), the arm (10) and the bucket (1) are supported on the support (8).
The vertical cylinders are arranged in the order of 1) so that they can be rotated up and down, and a boom, an arm, and a hydraulic cylinder (12) (13) (14) for operating a bucket are interposed between them.

A hydraulic motor (15) for turning the machine body is provided between the turning base (3) and the turning frame (4).

And, during excavation work, the above hydraulic cylinder (12)
(13) (14) and the hydraulic motor (15) are used most frequently, and the operation control of these hydraulic actuators is performed by the left and right hand operation levers (16) (provided inside the operating section (6). It is performed through the pilot operated hydraulic control valve by the operation of 17).

As shown in FIGS. 1 and 2, the driving part (6) has a driver's seat (20) provided in the rear of a cabin (19) having a door (18) on its left side, and the driver's seat (20). Left and right traveling levers (21a) and (21b) are erected in front of, and left and right control boxes (22) and (23) are erected on the left and right sides of the driver's seat (20). Is the left armrest, and (25) is the right armrest.

Further, left and right hand operation levers (16, 17) are provided upright above the left and right control boxes (22, 23), respectively.

In FIG. 3, the left hand operation lever (16) is attached to the left control box (22) in a state of being slightly rotated to the right.

Further, the right hand operation lever (17) is mounted in a state in which it is rotated slightly to the left with respect to the right control box (23).

Therefore, the intersection (e) between the extension line in the left-right operation direction (a) of the left hand operation lever (16) and the extension line in the left-right operation direction (c) of the right hand operation lever (17) is (16) Deviated to the driver side from the line (f) connecting (17).

Further, in FIG. 4, (26) is an arc-shaped elongated hole provided in the upper part of the control box (23).
6) is formed around the shaft center of the hand operation levers (16) (17). (27) is a mounting seat for the hand control lever (17),
(28) is a fixing bolt.

The arcuate elongated holes (26) are provided symmetrically in the left and right control boxes (22) and (23).

The embodiment of the present invention is as described above, and the left and right hand operation levers (16) (17) provided on the upper portions of the left and right control boxes (22) (23) are attached to the arc-shaped elongated holes (23) (23). While rotating inward along, fix with the fixing bolts (28).

The intersection (e) between the extension line in the left / right operation direction (a) of the left hand operation lever (16) and the extension line in the left / right operation direction (c) of the right hand operation lever (17) is the left or right hand operation lever ( 16) Make it more deviated to the driver side than the line (f) connecting the centers of (17).

Then, when excavating with a power work machine, when the driver grips the left hand operation lever (16) and moves the wrist in the left-right operation direction (a) for operation, the turning frame (4)
The arm (10) of the excavating section can be operated back and forth by moving the wrist forward and backward and operating the hand operation lever (16) in the forward and backward direction (b) while turning the arm left and right.

Further, by grasping the right hand operation lever (17) and operating the wrist in the left-right direction (c), the excavation bucket (11) can be rotated back and forth, and at the same time, the wrist can be moved to move the right hand operation lever (17). ) Is operated in the front-back direction (d), the boom (9) can be operated up and down.

As described above, according to the present invention, the hand control levers (16) and (17), which are located in the upper portions of the left and right control boxes (22) and (23) and can be operated in a cross shape, are operated by the same operation lever (16). )
Since it is a control device in a power work machine that can be freely fixed by rotating it freely about the axis of (17), the driver who holds the left and right hand operation levers (16) (17) can move the wrist naturally. It is possible to operate in a cross shape in the left-right direction and the front-rear direction in accordance with the movement of the vehicle, and therefore, the driving operation is easy and fatigue of the wrist, arm, and shoulder can be prevented.

Further, the driving operation can be performed accurately and surely, and various works can be efficiently performed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of the present invention. FIG. 1 is an overall side view of a power working machine equipped with a steering operation according to the present invention, and FIG. 3 is a perspective view of the part, FIG.
FIG. 4 is an enlarged plan view of the main part. (E): Intersection (f): Line (16): Hand control lever (17): Hand control lever (20): Driver's seat (22): Control box (23): Control box

Claims (1)

[Scope of utility model registration request] 1. A control box (22) (23) is located on both left and right sides in front of an armrest of a driver's seat (20), and a hand operation lever (16) (at the upper end of the control box (22) (23). In a control device for a power work machine provided with 17), the hand operation levers (16) (17) can be operated in a cross shape, and the hand operation levers (16) (17) can be arbitrarily set with respect to the axis. The left and right hand operating levers (16) and (17) are connected to each other at the intersection (e) of the left and right hand operating levers (16) and (17) connecting the centers of the left and right hand operating levers (16) and (17). A control device for power work, which is deviated to the driver side from the line (f).