JPH0682160U - Control equipment for construction machinery - Google Patents

Abstract

(57) [Abstract] [Purpose] In the prior art control device, the tilt angle of the operating lever, the distance from the armrest of the driver's seat to the operating lever, and the distance from the seat of the driver's seat to the pedal of the traveling lever are short. I couldn't adjust everything in time. As a result, the operator cannot operate in an optimal posture for his physique, which makes the driving operation difficult. This problem is solved. [Structure] In the control device for the construction machine of the present invention, a frame for supporting the tilt and tilt adjustable control boxes on the left and right sides is provided on the upper part of the underframe fixed to the upper surface of the floor plate of the vehicle body, and on the upper part of the frame. The seat part is slidably mounted in the front-rear direction, and the frame is slidably mounted in the front-rear direction with respect to the underframe.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a work control device installed near a driver's seat of a construction machine such as a hydraulic excavator or a work vehicle.

[0002]

[Prior art]

 FIG. 6 is a perspective view showing the inside of a driver's cab of a hydraulic excavator (not shown) having a conventional control device. In the figure, 1 is a cab in the cab, 2 is a front panel of the cab 1, 3 is a side panel, 4 is a floor board, 5 is a driver's seat, 6 is a seat portion of the driver's seat 5, 7 is an armrest, 8 is a floor board 4 An underframe fixedly provided on the upper surface of the, 9 is a slide rail in the front-rear direction provided between an upper part of the underframe 8 and a lower part of the seat 6, 10L and 10R are left and right control boxes, 11L and 11R are operating levers for working machines provided on the upper portions of the control boxes 10L and 10R, 12L and 12R are left and right side boxes, 13L and 13R are left and right traveling levers, and 14L and 14R are traveling levers. The pedals 15L and 15R attached to the lower portions of 13L and 13R are the tilting central axes of the control boxes 10L and 10R, respectively.

As shown in FIG. 6, in a conventional steering apparatus for a hydraulic excavator, a seat frame 5 fixed to an upper surface of a floor plate (4) in a cab 1 is fixed to a chassis 8 of a driver's seat 5 via a slide rail 9. The foot portion 6 is attached so as to be slidable in the front-rear direction. The control boxes 10L and 10R are attached to the left and right side boxes 12L and 12R fixed to the upper surface of the floor plate (4) so as to be tiltable in the front-rear direction (directions of arrows a and a '), respectively. In front of the driver's seat 5, traveling levers 13L and 13R with pedals (14L and 14R) are arranged.

[0004]

[Problems to be solved by the device]

 Operators differ considerably in size depending on individual differences. Therefore, when the operator is seated on the seat, slide the seat a forward or backward by adjusting the length a from the front edge of the seat to the pedal (shown in Fig. 6) according to the length of his / her feet. Make adjustments. However, since the control boxes with left and right operation levers are attached to the side box fixed to the floor board, the operator can set the distance b from the armrest to the operation lever to the optimum position according to the length of his arm. When the control box is tilted, the tilt angle of the control box with the operating lever does not reach the desired tilt angle, so the operability of the operating lever was poor. Further, if the tilting angle is set to a desired tilting angle, the distance b cannot be set to the optimum distance, so that it is difficult to operate the operating lever. An object of the present invention is to provide a control device that can solve the above problems.

[0005]

[Means for Solving the Problems]

 In the control device for the construction machine of the present invention, a seat part for an operator and a control box with an operation lever are supported so as to be slidably adjustable in the front-rear direction, and fixed to the upper surface of the floor plate of the vehicle body. A frame that supports the control box on both the left and right sides is provided on the upper part of the underframe, and the seat part is slidably mounted on the upper part of the frame in the front-back direction. Adjustably installed. In addition, a control box is attached to the frame so that the tilt and tilt can be adjusted in the front-rear direction.

[0006]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view showing a steering device of the present invention. Since the control device of the present invention is formed substantially symmetrically, the left side portion is given a reference numeral to proceed with the description. In FIG. 1, 16 is a floor plate of a driver's cab (not shown), 17 is an underframe fixed to the upper surface of the floor plate 16, 18 is a frame, 19 is a seat part, 20 is an armrest, 21 is a frame 18 with respect to the frame 18. The tilting central shafts for the control box (22), slide rails that can slide in the front-rear direction, 25 are operation levers provided on the front upper part of the control box 22, 26 is a traveling lever, and 27 is A pedal attached to the lower portion of the traveling lever 26, 28 is a handle for sliding operation of the slide rail 23 (same as the slide rail 24), 29 is a notch for locking, 0 is an axis of the tilting central shaft 21, and a1 is a seat. The distance from the front edge of the portion 19 to the pedal 27, b1 is the distance from the armrest 20 to the operating lever 25, and the angle θ is the controller with the operating lever (25) on the vertical surface. A tilt angle of the box 2 2. FIG. 2 is a front view seen from A in FIG. 3 is a side view showing an embodiment in which the slide rails 23 and 24 in FIG. 1 are adjusted.

Next, FIG. 4 is a partially cutaway side view showing the tilt and tilt structure of the control box 22 in the control device of the present invention. In the figure, 30 is a remote control valve for switching control of a working machine control valve (not shown), 31 is a bracket fixed to the frame (18) side, and 32 is an inner side of the control box 22. A fixed pipe, 33 (also indicated by reference numeral 33 in FIG. 2) is a mechanical lock mechanism, 34 is a handle that is fixedly attached to the outer periphery of the upper front side of the control box 22, and 35 is a mechanical lock mechanism. A lever that unlocks 33, that is, unlocks the tilt lock of the control box 22, a push-pull cable that connects the lever 35 and the remote control section 37 of the mechanical lock mechanism 33, and a pilot circuit (not shown) 38. When it is connected to the solenoid of the shutoff electromagnetic switching valve and turned off, the operation lever 25 is not operated. A limit switch provided that the operating lever (25) for locking in order to. The mechanical lock mechanism 33 can be unlocked by grasping and operating the lever 35 with respect to the handle 34 in the direction of arrow B. FIG. 5 is a partially cutaway side view showing a state in which the control box 22 is flipped up and tilted to the rear tilt end position when the operator gets off the vehicle.

Next, the configuration of the control device of the present invention will be described with reference to FIGS. In the present invention, a frame 18 for supporting the control box 22 on both left and right sides is provided on the upper part of an underframe 17 fixed to the upper surface of the floor plate 16 of the operating room, and a seat part 19 is provided on the upper part of the frame 18 with a slide rail. The frame 18 is mounted so as to be slidable in the front-rear direction by 24, and the frame 18 is mounted on the underframe 17 so as to be slidably adjusted in the front-rear direction by a slide rail 23. Further, a control box 22 is attached to the frame 18 so as to be adjustable in tilt and tilt in the front-rear direction.

Next, the operation of the control device of the present invention will be described. For example, when a relatively large operator with long limbs performs a driving maneuver, while sitting in the driver's seat, first, the lever 35 is operated to unlock the mechanical lock mechanism 33 while the tilt angle of the control box 20 is tilted. Tilt adjustment is performed by adjusting θ (that is, the tilt angle θ of the operating lever 25) to a desired tilt angle. By releasing the hand from the lever 35, the operating lever 25 can be positioned and set at a desired tilt angle. Next, as a second adjustment operation, the slide rail 24 is operated to move the seat portion 19 rearward (or frontward), and the operation lever 25 and the armrest 20 are adjusted so as to match the length of the operator's hand. Adjust the distance (distance b1 shown in FIG. 1). By adjusting the distance b2 as shown in FIG. 2, for example, it is possible to set the operation lever 25 to a position where the operator can operate it most easily. Next, as a third adjustment operation, the slide rail 23 is operated to move the frame 18 backward (or forward), and the foot is put on the pedal 27. Then, as shown in FIG. 2, for example, by adjusting the distance between the pedal 27 and the front edge of the seat portion 19 (distance a1 shown in FIG. 1) to b2, the pedal 27 can be set to the position where it is most easy to operate. You can By performing the adjustment operations in the first to third stages described above, the positions of the operation lever 25 and the pedal 27 can be made to correspond to the optimum positions for the lengths of the limbs of the operator.

[0010]

[Effect of device]

 There is a considerable difference in the size of the operators due to individual differences. In the prior art control device, when the operator sat in the driver's seat, it was not possible to adjust all the following three operation positions. In other words, the tilt angle of the operating lever, the distance from the armrest of the driver's seat to the operating lever, and the distance from the seat of the driver's seat to the pedal of the running lever could not all be adjusted in a short time. As a result, the operator cannot operate in an optimal posture for his or her own physique, which makes driving difficult and premature fatigue, which cannot be said to be safe. However, in the control device of the present invention, a frame for supporting the control box on both left and right sides is provided on the upper part of the underframe fixed to the upper surface of the floor plate of the cab, and the seat part is slid forward and backward on the upper part of the frame. The frame was mounted so that it could be slid forward and backward relative to the underframe. A control box is attached to the frame so that tilt and tilt adjustments can be made in the front-rear direction. As a result, the operator sits in the driver's seat, and first of all, while operating the lever on the front side of the control box to unlock the mechanical lock mechanism, the operating lever can be positioned and set to a desired tilt angle. Next, as the second adjustment operation, the slide rail on the lower side of the seat is operated to move the seat back and forth, so that the distance between the operating lever and the armrest is optimally adjusted to match the length of the operator's hand. Can be set at a distance. Next, as the third adjustment operation, the frame is moved back and forth by operating the slide rail on the lower side of the frame, and the distance between the pedal of the traveling lever and the seat is optimized to match the length of the operator's foot. Can be set to a distance of. By performing the adjustment operations in the first to third stages, the positions of the operation lever and the pedal can be made to correspond to the optimum positions for the lengths of the limbs of the operator. Therefore, with the control device of the present invention, the tilting angle of the operating lever, the distance from the armrest of the driver's seat to the operating lever, and the distance from the seat to the pedal can be set in a short time regardless of the size of the operator. Since the adjustment can be performed, it is possible to facilitate the driving operation of the operator, reduce the fatigue of the driving operation, and improve the safety.

[Brief description of drawings]

FIG. 1 is a side view showing a control device of the present invention.

FIG. 2 is a front view seen from A in FIG.

FIG. 3 is a side view showing an embodiment when the slide rail in FIG. 1 is adjusted.

FIG. 4 is a partially cutaway side view showing a tilt and tilt structure of a control box according to the present invention.

FIG. 5 is a partially cutaway side view showing a state in which the control box according to the present invention is flipped up and tilted to a rear tilting end position.

FIG. 6 is a perspective view showing the inside of a driver's cab provided with a conventional control device.

[Explanation of symbols]

 4,16 Floor plate 5 Driver's seat 6,19 Seat part 7,20 Armrest 8,17 Underframe 9,23,24 Slide rails 10L, 10R, 22 Control box 11L, 11R, 25 Operation lever 13L, 13R, 26 Travel lever 14L , 14R, 27 pedals 15L, 15R, 21 Tilt center axis 18 frame 33 Mechanical lock mechanism

Claims (2)

[Scope of utility model registration request] 1. In a control device in which a seat portion for an operator and a control box with an operation lever are supported so as to be slidably adjustable to each other in the front-rear direction, an upper portion of an underframe fixed to an upper surface portion of a floor plate of a vehicle body. A frame that supports the control box on both left and right sides is provided, and the seat part is mounted on the upper part of the frame so that the seat part can be slidably adjusted in the front-rear direction. A characteristic control device for construction machinery. 2. The control device for a construction machine according to claim 1, wherein the control box is attached to the frame so that the tilt and tilt can be adjusted in the front-rear direction. .