JP2530255Y2 - Working device operating device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a working device having a plurality of kinds of operating means for moving an object, and further relates to an operating device for controlling the operation of the plurality of kinds of operating means.

[0002]

2. Description of the Related Art For example, an aerial work vehicle (working device) is provided with a worktable (object) at the tip of a boom capable of raising, lowering, expanding and turning. In addition, each operation of the boom is often performed by the operation of three types of hydraulic actuators (operating means) such as an up-and-down cylinder, a telescopic cylinder, and a turning motor. An operation device having one operation lever that can be selectively operated in three different directions is attached to the work table. The operator who has boarded the worktable can move the operator together with the worktable to an arbitrary height by causing the control device (control means) to control the operation of the hydraulic actuators through the operation of the operation lever.
However, in the conventional operation device, only one type of operation of the hydraulic actuator is selected by operating the operation lever in one type of direction (hereinafter, the operation of the work table by the independent operation of such a hydraulic actuator). Movement is referred to as stand-alone movement of the workbench). By the way, in recent aerial work vehicles, in response to a request for simplification of operation, operation of the operation lever in one type of direction causes the work table to move in a predetermined target moving direction, for example, a vertical direction (up and down) or a horizontal direction. (Front, back, left and right)
It is also possible to make the control device perform interlock control of each hydraulic actuator so as to move the
Such movement of the workbench by the interlocking of the hydraulic actuators is referred to as interlocking movement of the workbench). Therefore, the operating device requires two operating levers for performing the independent movement and the interlocking movement of the worktable.

[0003]

However, the space on the workbench is limited. For this reason, there is a problem that when an operation device which is enlarged due to an increase in the number of operation levers is attached, a work space on a work table is narrowed, which is not preferable.

The present invention has been made in view of such a problem, and enables a single operation lever to perform an independent movement and an interlocking movement of an object (workbench). An object of the present invention is to provide an operating device for a working device.

[0005]

In order to achieve the above object, the operating device according to the present invention comprises a (single) operating lever which can be selectively operated in a plurality of directions, and a single type of operating object. There is provided mode setting means for selectively setting any one of the movement mode and the interlocking movement mode. And
When the independent movement mode is set in the mode setting means and the operation lever is operated in any direction, the control means switches the operation means selected from the plurality of operation means to another operation. Operate and control independently of the means. Further, when the interlocking movement mode is set by the mode setting means and the operation lever is operated in any direction, the control means causes the control means to move the object in the target movement direction selected by the operation. Are controlled in conjunction with each other.

[0006]

In such an operation device, one operation lever can be used as an operation lever for independent movement of the object (work table) or interlocking movement by setting the movement mode of the object by the mode setting means. Or as an operating lever for

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. First, an aerial work vehicle (working device) including the operating device according to the present invention will be described with reference to FIG. This aerial work vehicle 20 includes a truck body 21
A swivel table 22 that can freely swing is attached to the rear part. A boom 23, which can be freely extended and retracted by a telescopic structure, is pivotally mounted on the upper portion of the swivel base 22 so that the boom 23 can be freely raised and lowered. Further, a worktable (object) 27 is attached to the tip of the boom 23. In addition,
The turning operation of the swivel base 22, the raising and lowering operation of the boom 23, and the expanding / contracting operation are performed by a hydraulic turning motor 24 built in the vehicle body 21, respectively.
, A hydraulic reversing cylinder 25 attached between the swivel 22 and the boom 23 and a hydraulic telescopic cylinder 26 built in the boom 23 extend and retract.
Further, the operation of each of the hydraulic actuators 24 to 26 is controlled by a control device (comprised of a computer, a hydraulic control valve, and the like) 28 attached to the side surface of the swivel table 22, by which hydraulic oil is applied to the hydraulic actuators 24 to 26. Supply and discharge are controlled and performed. In such an aerial work vehicle 20, the operation of each of the hydraulic actuators 24 to 26 can be independently performed, and the workbench 27 can be moved to an arbitrary height. The movement of the work table 27 due to the independent operation of the hydraulic actuator is referred to as the work table 27.
It is called a stand-alone movement.

In the aerial work vehicle 20, in addition to the independent movement of the work table 27, as shown in FIG. 3, the work table 27 is moved linearly forward, backward, left, and right (hereinafter, referred to as a horizontal movement). (Referred to simply as horizontal movement) or vertical movement up and down. In this case, the movement of the work table 27 is such that the hydraulic actuators 24 to 26 operate in conjunction with each other (for example, in the case of horizontal movement in the forward direction, the extension operation of the boom 23 and the raising / lowering operation in conjunction with each other). It is performed by Note that such movement of the work table 27 by the interlocking of the hydraulic actuators is referred to as interlocking movement of the work table 27.

In the aerial work vehicle 20, the operating device 10 according to the present invention is provided to the work table 27 in order to provide an instruction signal to the control device 28 to perform the independent movement and the interlocked movement of the work table 27. Attached. Next, the operation device 10 will be described with reference to FIG. This operating device 1
Reference numeral 0 denotes a single operation lever 1 and a mode setting switch 2. Note that the operating device 10 is
Since it is mounted on the mounting side (rear part) of the boom 23 on the upper side, the operator operates the operation lever 1 facing rearward. For this reason, the front, rear, left, and right here indicate directions viewed from the worker facing the rear.

The operating lever 1 is provided with a front-rear direction (vertical direction in the horizontal view), a left-right direction (left-right direction in the figure), and a left-right rotation direction (left-right rotation about an axis perpendicular to the plane of the figure). It can be selectively operated in three different directions.

The mode setting switch 2 is used to switch between the above-mentioned independent movement mode in which the work table 27 is moved independently and the linked movement mode in which the work table 27 is moved in an interlocked manner by an operator's switching operation. , For setting the selection of the movement mode.

In the independent movement mode, the operation of the operating lever 1 in the front-rear direction is controlled by the raising / lowering / raising / lowering operation of the boom 23, that is, the raising / lowering cylinder 2
5 reduction / extension operations are assigned. In addition, a contraction / extension operation of the boom 23, that is, a contraction / extension operation of the telescopic cylinder 26, is assigned as a control target for the operation in the left-right direction. Furthermore, the left and right turning operations of the boom 23 are performed as control objects for the operation in the left-right rotation direction,
That is, forward and reverse rotation operations of the swing motor 24 are assigned. On the other hand, in the linked movement mode, the movement of the workbench 27 horizontally forward and backward is assigned as the target movement direction for the operation of the operation lever 1 in the front-rear direction. The horizontal movement of the workbench 27 to the left and right is assigned as the target movement direction for the operation in the left-right direction. Further, vertical upward and downward movements of the workbench 27 are assigned as target movement directions for operations in the left-right rotation direction.

Next, the operating table 27 by the operating device 10
Will be described. When the stand-alone movement mode is set by the mode setting switch 2, for example,
When the operating lever 1 is operated in the backward direction, the operating device 10 sends an instruction signal to the control device 28 to control the extension cylinder 25 to extend independently of the other hydraulic actuators 24 and 26. The work table 27 rises so as to draw an arc around the pivot point of the boom 23 to the swivel table 22. Further, for example, when the operation lever 1 is operated in the right direction, the control device 28 controls the extendable operation of the telescopic cylinder 26 independently of the other hydraulic actuators 24 and 25. The work table 27 moves obliquely rearward and upward toward the front of the boom 23 in the longitudinal direction. Further, for example, when the operation lever 1 is rotated rightward, the control device 28 controls the turning motor 24 to perform the reverse rotation operation independently of the other hydraulic actuators 25 and 26. The work table 27 is the swivel table 22
Move to the right so as to draw an arc around the turning center of.

On the other hand, when the interlocking movement mode is set by the mode setting switch 2, for example, when the operation lever 1 is operated backward, the operation device 10
An instruction signal is sent to the control device 28 to control the interlocking operation between the up / down operation of the up / down cylinder 25 and the extension operation of the telescopic cylinder 26. Note that the “interlocking control” here is performed based on a calculation result according to the elevation angle, the extension amount, and the turning position of the boom 23 at that time. For this reason,
Hereinafter, the contents of the “interlocking control” will be described with the results. That is,
The worktable 27 moves linearly and horizontally rearward from the original position by the interlocking control. Further, for example, when the operation lever 1 is operated in the right direction, the control device 28 controls the reverse operation of the turning motor 24 and the extension operation of the telescopic cylinder 26 in conjunction with each other. The work table 27 moves linearly rightward from the original position. Further, when the operation lever 1 is rotated to the right, the controller 28 controls the up / down operation of the up / down cylinder 25 and the extension operation of the telescopic cylinder 26 in conjunction with each other. The workbench 27 rises vertically from its original position.

As described above, in the present operating device 10, one operating lever 1 functions as two independent operating levers through the switching of the movement mode by the mode setting switch 2. That is, two operation levers that should be provided for each movement mode can be reduced to one. Therefore, it is possible to prevent an increase in the size of the operation device 10, and to effectively use the space on the work table 27.

Although the above embodiment has been described with reference to an aerial work vehicle having a work table as an "object", the present invention is not limited to this. For example, it can be used for a crane truck of a boom type, and in this case, "object"
Is the tip of the boom or a hook suspended from it.

As described above, by using the operating device of the present invention, the operating lever for selecting the operating means to be operated independently in the independent movement mode for performing the independent movement control of the object, and In the interlocking movement mode in which the interlocking movement control of the object is performed, the operation lever for selecting the target movement direction of the object can be provided with two operation levers with one operation lever. . For this reason, downsizing and simplification of the operating device can be achieved.

[Brief description of the drawings]

FIG. 1 is a plan view of an operating device according to the present invention.

FIG. 2 is a perspective view of an aerial work vehicle provided with the operating device.

FIG. 3 is a perspective view showing an interlocking movement of a worktable by the operation device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Operation lever 2 Mode setting switch 24 Swing motor 25 Undulating cylinder 26 Telescopic cylinder 27 Workbench

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location B66F 11/04 B66F 11/04 G05G 9/10 G05G 9/10 Z

Claims (1)

(57) [Scope of request for utility model registration] An operating device for a working device, comprising: a plurality of types of operating means for moving an object; and control means for controlling the operation of the operating means, wherein the operating device is selectively operated in a plurality of directions. And a mode setting means for selectively setting any one of the independent movement mode and the interlocking movement mode of the object. The mode setting means sets the independent movement mode. And
And when the operation lever is operated in any one of the directions, the control means controls the operation means selected by the operation of the plurality of types of operation means independently from other operation means, and When the interlocking movement mode is set by the mode setting means and the operation lever is operated in any one of the directions, the object is moved in a target movement direction selected by the operation. An operating device for a working device, wherein a control unit controls the plurality of operating units in an interlocked manner.