JPH087467Y2 - Working machine control equipment for construction machinery - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention relates to a control device for a construction machine. More specifically, the present invention relates to an operating lever that is movable on both sides of an operator seat and is rotatable in the front-rear direction at the same time. The present invention relates to a working machine control device for a construction machine, which includes a lever stand.

(Prior Art) Conventionally, a hydraulic excavation type construction machine having a working machine, a driver's seat (room), a machine drive source, a hydraulic control device, etc. on a swivel has a lever stand installed on both sides of an operator seat. It is known to equip a work machine control lever above a lever stand.

For example, Japanese Unexamined Patent Publication No. 63-210317 discloses a lever stand that can be rotated in the front-rear direction, and Japanese Utility Model Laid-Open No. 63-27573 discloses a device that can be rotated in the front-rear direction.

These are intended to facilitate getting in and out of the driver's seat by moving the work implement operating lever from the operating position to the retracted position.

In addition, as can be seen from Japanese Utility Model Laid-Open No. 62-26464, the lever stand can be moved with respect to the operator at any position in the front-rear direction or with the operator seat in the front-rear direction by adjusting the position of the work machine control lever. There are some that are designed to facilitate.

(Problems to be solved by the invention) In the above structure, when the lever stand is moved from the operation position to the retracted position or vice versa to facilitate getting on and off, the lever stands on both left and right sides are provided. Each time, the operator had to perform the forward / backward slide or the forward / backward rotational operation, and the left and right lever stands could not be simultaneously moved to the operation position or the retracted position with one touch.

Further, even if the lever stand and the operator seat position can be slide-adjusted individually or simultaneously in the front-rear direction to facilitate the operation, the lever stand cannot move to the retracted position, which is inconvenient for getting on and off.

In view of this, the present invention allows the lever stand to be pivoted rearward with one touch by the pivotal fulcrum so as not to get in the way when the operator gets on and off in the driver's seat where the lever stand is arranged at both left and right sides of the operator seat. The purpose of the present invention is to provide a working machine control device for a construction machine that allows an operator to get on and off the seat on either side of the seat, and to solve the drawbacks of the prior art.

(Means for Solving the Problem) In order to achieve the above object, the present invention is a working machine control device for a construction machine, in which lever stands are arranged at both left and right positions sandwiching an operator seat, and a lever stand with an operator seat and a control lever. A support plate mechanism that supports and are slidable in the front-rear direction, a lever stand support shaft that is held by the support plate mechanism and serves as a rotation fulcrum of a lever stand, and a lever with a steering lever that is fixedly installed on both sides of the lever stand support shaft. The stand, a locking mechanism that blocks the rotation of the support shaft, a single rotation operation lever that releases the locking mechanism, and a lever stand with steering levers on both left and right positions are operated clockwise by operating the rotation operation lever. Simultaneously rotate, and simultaneously rotate the lever stand with the control lever at both left and right positions by rotating the control lever counterclockwise. It is characterized by comprising a hoisting mechanism that returns to the hanging position.

(Operation) With the above configuration, when the operator enters or leaves the driver's seat, the lever stand with the steering lever can be rotated to the retracted position rearward from the operation position at the rotation fulcrum, so that the operator can move to either side of the seat. You can easily get in and out of.

(Embodiment) Hereinafter, the present invention will be described with reference to an embodiment shown in FIGS.

The working machine control device for the construction machine according to the present invention is
As shown in FIG. 2 and FIG. 2, a driver's seat device 11 is installed on the upper surface of a driver's seat floor plate 10 of a hydraulic excavation type construction machine. The driver's seat device 11 includes a base 12, a support plate mechanism 13 provided on the base 12, an operator seat portion 14, and left and right work machine control portions 15, 1.
It is configured as an integrated Assy including 6.

Of these, the base 12 supports the driver's seat device 11 of the integrated assembly, and the support plate mechanism 13 includes an upper support plate 17 and a lower support plate 18 stacked in two stages, and the lower support plate 18 is connected to the left and right working machines. The operator seat portion 14 is placed on the upper support plate 17 of the steering portions 15 and 16. The pair of slide rails 19 and 20 provided between the lower support plate 18 and the base 12 allows the working machine control portion 1
5, 16 and the operator seat portion 14 can be slid together in the front-rear direction, and only the operator seat portion 14 is slid in the front-rear direction by a pair of slide rails 21 and 22 provided between the upper support plate 17 and the operator seat portion 14. I can do it.

The left and right work machine control portions 15 and 16 include lever stands 23 and 24 with control levers, a lever stand support 25, a lever stand rotation means 26, and a lever stand restriction mechanism 27.

The lever stands 23 and 24 with control levers are composed of a box-shaped rigid frame 28 having an open bottom, and an aesthetically-shaped synthetic resin cover 29 which is covered by covering the outer peripheral side of the frame 28 and fixed by appropriate means. A hydraulic pilot operating valve element 32 including a working machine operating lever 31 is firmly fixed by opening a window in an oblique flat portion 30 on the upper side of the frame 28.

A bifurcated bracket portion 33 is provided on the lower side of the frame 28, and one frame wall 34 of the bifurcated bracket 33 is passed through and fixed to a horizontal cylindrical body 35.

The lever stand support portion 25 includes a lever stand support shaft 38 rotatably supported by fixing a pair of bearings 36, 37 to the lower surface of the lower support plate 18, and the support shaft 38 has lever stands 23, 24 with operating levers. The lever stand (23, 24 with a control lever) is rotatably supported by fitting and engaging the cylindrical body (35) provided on the.

The lever stand rotating means 26 is composed of a hoisting member (damper) 39 provided between the lower support plate 18 and the skeleton 28 of the lever stands 23 and 24 with steering levers, and the lever stands 23 and 24 with steering levers are connected to the support shaft. A rotation motion in a clockwise direction around 38 is added.

The lever stand rotation restricting means 27 comprises a latching mechanism 40, a release mechanism 41 and a rotation stopper mechanism 42, and the latching mechanism 40 is positionally adjustable in the left and right directions on the skeleton 28 of the lever stands 23 and 24 with steering levers. The hook 43 is attached to the lock plate 44, and the lock plate 44 engages with the hook 43.

Further, the releasing mechanism 41 includes a rotating shaft 46 with a rotating operation lever 45 that rotates the lock plate 44 to engage and disengage with the hook 43. The rotating shaft 46 is rotatably supported by a bearing 48 provided at a position where the lower support plate 18 of the support plate mechanism 13 enters inside the lever stands 23 and 24 with a steering lever. Rotate the lock plate 44 at the position where it engages with the hook 43 of 40.
It is fixed at 46. The rotating shaft 46 is provided with a rotating torsion spring 49 which is biased in the counterclockwise direction, and keeps the hook 43 and the lock plate 44 engaged with each other.
The engagement is released by rotating the rotating shaft 46 clockwise by the operating lever 45 against 49.

At this time, when the hoisting member 39 extends in the clockwise direction to rotate the lever stand support shaft 38, the lever stand 23 with the steering lever rotates rearward, and at the same time, the other lever stand 24 with the steering lever also rotates. It will rotate.

The lock plate 44 returns by the repulsive force of the spring 49 after releasing, but the position at that time is kept in the re-engaged state by the contact between the tip end portion 47 of the lock plate 44 and the lower support plate 18.

The rotation stopper mechanism 42 is a lever stand with a control lever.
A wall 50 is provided on the bifurcated bracket portion 33 of the frame 28 of 23, 24, the facing wall 51 is opposed to the lower support plate 18, and a stopper 52 made of rubber is provided between them so as to be adjustable, and a lever stand with a steering lever 23 The operation positions of 24 are fixed.

 Next, the operation will be described.

When the operator stops the vehicle and gets out of the driver's seat, first, the rotary operation lever 45 under the operator seat portion 14 is
When is rotated upward, the rotation shaft 46 is rotated and the engagement between the hook 43 of the locking mechanism 40 and the lock plate 44 is released.

This causes the hoisting member 39 to move in the direction of raising the lever stand 23 with the steering lever.
Since 23 has one end fixed by a lever stand support shaft 38, it rotates around the lever stand support shaft 38 in a clockwise direction, whereby the working machine operating lever 31 is located at a position at least rearward of the front end of the operator seat portion 14. At the same time, the lever stand 24 with the control lever also moves in the same manner.

Therefore, when the operator leaves the operator seat portion 14, there is no problem that the working machine operating lever 31 becomes an obstacle on either side.

Further, when returning the lever stands with control levers 23, 24 to the original control positions, it can be restored by tilting either the left or right work implement lever 31 to the front side. In this case, the rotation stopper mechanism 42 Rotation is restricted by
When returning to the position of the stopper, the hook 43 is again engaged with the lock plate 44 and locked by the hooking mechanism 40.

(Effects of the Invention) Since the present invention is configured as described above, in addition to sliding the operator seat part and the lever stand with a steering lever in the front-rear direction in the related art, the lifting mechanism releases the steering levers on both sides. The lever stand with one touch is rotated to the retracted position with one touch, the position of one rotation direction is regulated by the rotation stopper, and the other rotation direction is regulated by the latching mechanism that can be engaged and disengaged. Becomes stable without wobbling, and the operator can get on and off the vehicle from either side of the seat.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of a working machine control device for a construction machine according to the present invention, and FIG. 2 is a side view of FIG. 13: Support plate mechanism, 14: Operator seat, 23, 24
...... Lever stand with control lever, 27 …… Lever stand rotation restricting means, 38 …… Lever stand spindle, 40 ……
Latch mechanism, 41 …… Release mechanism, 42 …… Rotation stopper mechanism.

Claims (1)

[Scope of utility model registration request] 1. In a working machine control device for a construction machine, wherein lever stands are arranged at both left and right positions sandwiching an operator seat part, a support plate mechanism supporting an operator seat part and a lever stand with a control lever so as to be slidable in the front-rear direction. And a lever stand support shaft that is held by the support plate mechanism and serves as a rotation fulcrum of the lever stand, a lever stand with a steering lever that is fixedly installed on both sides of the lever stand support shaft, and a latch that prevents the support shaft from rotating. Mechanism, one rotation operation lever that releases the latching mechanism, and the lever stand with the steering lever at both left and right positions are rotated simultaneously in the clockwise direction by operating the rotation operation lever, and the steering lever is moved in the counterclockwise direction. By rotating the lever stands with steering levers on both left and right positions at the same time and returning to the latched position, a hoisting mechanism is constructed. Work machine steering apparatus.