JP3645056B2 - Construction machine operation device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an operation device for a construction machine that operates an operation member outside a cab by operating an operation member inside the cab.
[0002]
[Prior art]
FIG. 4 is a plan view of a conventional cab in the construction machine, and FIG. 5 is a side view as seen from the right side of the driver's seat. As shown in FIGS. 4 and 5, console boxes 52L and 52R are provided on the left and right sides of the driver's seat 51, and the console boxes 52L and 52R operate an actuator that drives a boom, an arm, a bucket, or a swing body. Main operation levers 53L and 53R are attached. The console box 52R on the right side of the driver's seat is attached with a sub operation lever 56 for operating a special attachment actuator, for example, a pilot valve of a blade lifting / lowering actuator. The pilot valve is provided outside the cab, for example, below the floor plate 54. Further, the console box 52R is attached to the floor plate 54 so as to be slidable back and forth so that the position of the console box 52R can be adjusted so that the driver can easily operate the sub operation lever 56.
[0003]
One end of a push-pull cable 58 is attached to the lower end of the sub operation lever 56, and the other end is attached to the operation portion of the pilot valve. The push-pull cable 58 is disposed from the lower end of the sub operation lever 56 toward the rear of the driver's seat 51, passes through a hole 62 formed in the floor plate 54, and extends to the pilot valve. Here, since the console box 52R moves to the front and rear of the driver's seat 51 so that the driver can easily operate the console box 52R, the push-pull cable 58 is slacked to the rear of the driver's seat 51 so as not to prevent the movement of the console box 52R. The entire cable 58 is slid in the hole 62 to follow the movement of the console box 52R according to the movement of the 52R.
[0004]
[Problems to be solved by the invention]
However, if the cable is slackened behind the driver's seat as described above, a space for the slackened cable is required, and an air conditioner unit or the like cannot be disposed behind the driver's seat. Further, in order to make the cable slide in the hole, it is necessary to make the hole large, so there is a risk that the noise in the cab will increase or dust may enter from the hole. Further, the cable may be damaged by sliding the cable through the hole. Furthermore, since the position of the hole is determined according to the position of the pilot valve described above, it is difficult to form the hole at a desired position.
[0005]
An object of the present invention is to provide an operating device for a construction machine that does not require much space for a cable and does not require a large hole in a floor space.
[0006]
[Means for Solving the Problems]
1 to 3 showing an embodiment, the invention of claim 1 includes a movable member 2R that is movably provided in a driver's cab, and an operating member 6 that is attached to the movable member 2R. The one end is attached to the operating member 6 and the other end is attached to the operated member 5 provided outside the cab , and the wire and the tube through which the wire is inserted so as to transmit the operating force by the operating member 6 to the operated member 5 And a fixed member 15 for fixing the cable 8 in the driver's cab at a position away from the operating member 6, and a predetermined distance between the fixing member 15 and the operating member 6. The above object is achieved by providing the guide member 11 that slidably holds the cable 8 in the position.
[0007]
According to the second aspect of the present invention, the guide member 11 has a cylindrical shape and has a tapered shape in which the inner diameter is widened at the entrance / exit part.
In the invention of claim 3, the movable member is the console box 2R in the cab. According to a fourth aspect of the present invention, the operation member is the operation lever 6 for driving the attachment actuator 5 provided in advance.
[0008]
In the section of the means for solving the above-described problems for explaining the configuration of the present invention, the drawings of the embodiments of the invention are used for easy understanding of the present invention. It is not limited.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a plan view showing a configuration of a driver's seat to which a construction machine operating device according to an embodiment of the present invention is applied, and FIG. 2 is a side view seen from the right side of the driver's seat. As shown in FIGS. 1 and 2, console boxes 2L and 2R are provided on the left and right sides of the driver's seat 1, and each console box 2L and 2R is operated with an actuator for driving a boom, an arm, a bucket, or a swing body. Main operation levers 3L and 3R are attached. Further, a sub operation lever 6 for operating a special attachment actuator provided below the floor plate 4, for example, a pilot valve 5 of a blade lifting / lowering actuator, is attached to the console box 2R on the entrance / exit side. The console box 2R on the right side of the driver's seat is attached to a stand 4A formed on the floor plate 4 so as to be slidable back and forth so that the position of the console box 2R can be adjusted so that the driver can easily operate the sub operation lever 6. ing. An air conditioner unit 10 is disposed behind the driver seat 1.
[0010]
The vicinity of the lower end of the sub operation lever 6 is attached to a rotation shaft 7 so as to be rotatable as shown in FIG. 2, and rotates as indicated by an imaginary line in FIG. One end of the push-pull cable 8 is attached to the lower end 6A of the sub operation lever 6. The push-pull cable 8 is formed by inserting a wire into the tube, and one end of this wire is fixed to the lower end 6 </ b> A of the sub operation lever 6. The push-pull cable 8 is arranged from the lower end of the sub operation lever 6 toward the rear of the driver's seat 1, passes through the guide tube 11 attached to the side wall 9 of the driver's cab, and curves upward and downward. Then, it passes through the rear portion of the air conditioner unit 10, penetrates the hole 12 formed in the floor plate 4, is inserted below the floor plate 4, and is attached to the operation portion 5 </ b> A of the pilot valve 5. Further, in the vicinity of the hole 12 in the cab, the cable 8 is fixed to the cab side wall (cab) by the mounting bracket 15, and is fixed to the floor plate by the mounting brackets 16, 17 and 18 outside the cab.
[0011]
3A, 3B, and 3C are a front view, a plan view, and a side view showing the configuration of the guide tube 11, respectively. As shown in FIG. 3, the guide tube 11 has a tapered entrance and exit, and is fixed to the side wall 9 by a bracket 13. The inner diameter 11A of the guide cylinder 11 is formed larger than the inner diameter of the cable 8 so that the cable 8 can move smoothly.
[0012]
Next, the operation of this embodiment will be described. When the driver moves the console box 2R to the rear of the cab, the cable 8 also moves rearward and slides in the guide tube 11. Here, since the cable 8 is fixed to the cab side wall (cab) by the mounting bracket 15, the cable 8 does not slide in the portion of the mounting bracket 15. Therefore, the cable 8 bends upward as shown by the phantom line in FIG. Conversely, when the console box 2R is returned to the original position, the cable 8 moves from the position indicated by the phantom line in FIG. 2 to the position indicated by the solid line.
[0013]
Thus, in the present embodiment, the cable 8 is fixed in the vicinity of the hole 12 by the fixing bracket 15 and is guided by the guide cylinder 11 between the fixing bracket 15 and the lower end 6A of the sub operation lever 6. Therefore, even if the console box 2R moves back and forth, it does not slide in contact with the holes 12 formed in the floor plate 4 or other parts in the cab, so that the cable 8 can be prevented from being damaged. In addition, since the cable 8 does not make sliding contact with the hole 12, the hole 12 can be formed small, whereby dust and noise can be prevented from entering from the hole 12 into the cab. Furthermore, by attaching the guide cylinder 11 at a predetermined position, the cable 8 can be arranged while avoiding the air conditioner unit 10 provided behind the driver's seat 1. Furthermore, since the hole 12 can be formed at an arbitrary position of the floor plate 4 by variously changing the position of the guide cylinder 11, the degree of freedom of arrangement of the cable 8 can be increased.
[0014]
In addition, since the tapered portion is provided at the entrance / exit of the guide tube 11, damage to the cable 8 moving in the guide tube 11 can be prevented. Furthermore, since the guide cylinder 11 is substantially cylindrical, the deflection of the cable 8 can be reduced when the console box 2R is moved. Furthermore, even if the cable 8 is slightly curved at the position of the guide tube 11, the cable 8 can be smoothly guided.
[0015]
In the above-described embodiment, the cable 8 for operating the valve 5 for operating the blade has been described. However, the present invention is also applied to other attachments, for example, operation devices for operated members such as valves such as breakers or levers. Can be applied.
[0016]
In the correspondence between the above embodiment and the claims, the console box 2R is a movable member, the sub operation lever 6 is an operation member, the pilot valve 5 is an operated member, the fixing bracket 15 is a fixing member, and the guide cylinder 11 Constitutes a guide member.
[0017]
【The invention's effect】
As described above in detail, according to the first aspect of the present invention, the cable is fixed by the fixing member at a position away from the operation member, and the cable can be slid by the guide member between the operation member and the fixing member. Thus, the cable moves while being bent while being guided by the guide member in accordance with the movement of the movable member. For this reason, the cable does not come into contact with or slide-contact with other members in the cab, and damage to the cable and peripheral devices can be prevented. In addition, when the cable passes through the floor table of the cab, the cable does not slide with the floor table, so the through hole can be formed small. Noise can be prevented from entering.
According to the invention of claim 2, since the entrance / exit part of the guide member is tapered, the cable sliding on the guide member is prevented from being damaged by the guide member.
[Brief description of the drawings]
FIG. 1 is a plan view showing a configuration of a cab to which a construction machine operating device according to an embodiment of the present invention is applied. FIG. 2 is a cab to which a construction machine operating device according to an embodiment of the present invention is applied. FIG. 3 is a side view showing a configuration of a guide cylinder. FIG. 4 is a plan view showing a configuration of a cab to which a conventional construction machine operating device is applied. FIG. 5 is a conventional construction machine operating device. Side view showing the configuration of the cab to which
1 Driver's seat 2L, 2R Console box 3L, 3R Main operation lever 4 Floor plate 5 Pilot valve 6 Sub operation lever 7 Rotating shaft 8 Push-pull cable 10 Air conditioner unit 11 Guide cylinder 12 Hole

Claims (4)

A movable member movably provided in the cab;
An operation member attached to the movable member;
One end is attached to the operation member, and the other end is attached to an operated member provided outside the cab , and includes a wire and a tube through which the wire is inserted so as to transmit an operation force by the operation member to the operated member. In an operating device for a construction machine with a cable,
A fixing member for fixing the cable in the cab in a position away from the operation member;
A construction machine operating device comprising: a guide member that slidably holds the cable at a predetermined position between the fixing member and the operating member. 2. The operating device for a construction machine according to claim 1, wherein the guide member has a cylindrical shape and has a tapered shape in which an inner diameter is widened at an entrance / exit part.   The operating device for a construction machine according to claim 1, wherein the movable member is a console box in the cab.   4. The operating device for a construction machine according to claim 1, wherein the operating member is an operating lever for driving a preliminarily provided attachment actuator.

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