JP2016118820A - Operation lever device for working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an operation lever device for a working machine allowing the operations of a release switch and an operation grip without floating the palm from an enable switch when performing the operation of an operation dial while pressing the enable switch by the palm.SOLUTION: An operation lever device 101 for a high-place working vehicle includes: an operation grip 104 capable of performing a tilting operation; an operation dial 103 provided on a lower side of the operation grip 104 so that a rotation operation can be performed in a circumferential direction; an enable switch S1 which performs a pressing operation of the operation grip 104 downward so as to validate the tilting operation of the operation grip 104 and a rotation operation of the operation dial 103; and a release switch S2 which is provided at the same height position as that of the operation dial 103 and performs a pressing operation so as to turn on a signal output of the enable switch S1.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an operating lever device used for operating a working machine such as an aerial work vehicle.

  2. Description of the Related Art Conventionally, among operation lever devices used for operating a work machine such as an aerial work vehicle, there is an operation lever device that performs, for example, raising / lowering / extending / turning of a boom (see Patent Document 1). The operation lever device of Patent Literature 1 includes an operation grip that can be tilted and an operation dial that is provided on the lower side of the operation grip so as to be rotatable in the circumferential direction.

  In the operation lever device of Patent Document 1, an enable switch is provided on the upper surface of the operation grip to enable tilting operation of the operation grip and rotation operation of the operation dial by pressing. A release switch for turning on the signal output of the enable switch is provided on the upper side surface of the operation grip. This release switch prevents the signal output from being turned on even when a fallen object contacts the enable switch.

JP 2014-92898 A

  In the operation lever device of Patent Document 1, when operating the operation dial, a finger is put on the operation dial while pushing the enable switch with the palm of the hand. In this state, if the release switch on the upper side surface of the operation dial is to be pressed with a finger, the finger must be bent largely or pressed with the base of the finger.

  However, if you lose your finger strength due to fatigue due to prolonged work, or if you try to press the release switch while wearing thick rubber gloves to prevent electric shock, your fingers may be bent greatly or at the base of your fingers. It becomes difficult to push. Therefore, attention is paid to pressing the release switch, and the palm of the hand floats from the enable switch, which may invalidate the operation against the operator's will.

  The present invention has been made in view of such a conventional problem, and when the operation dial is operated while pushing the enable switch with the palm of the hand, the operation of the release switch and the operation grip is performed without lifting the palm from the enable switch. An object of the present invention is to provide an operating lever device for a working machine that can perform the above.

  As a result of diligent research, the present inventors have employed the following operating lever device for a working machine in order to solve the above problems.

  An operation lever device for a work machine according to the present invention includes an operation grip that can be tilted, an operation dial that is provided on a lower side of the operation grip so as to be rotatable in a circumferential direction, and at least a part of the operation grip downward. An enable switch that enables a tilt operation of the operation grip and a rotation operation of the operation dial by pressing, and a signal output of the enable switch that is provided at the same height position as the operation dial is turned on. And a release switch.

  In the operation lever device for a work machine according to the present invention, it is preferable that the release switch is provided on the operation dial.

  Furthermore, in the operation lever device of the working machine according to the present invention, it is preferable that a plurality of protrusions are provided on a peripheral surface of the operation dial, and the release switch is provided between the plurality of protrusions.

  In the operation lever device of the working machine of the present invention, it is preferable that the operation grip is formed in a cylindrical shape.

  In the operation lever device for a work machine according to the present invention, it is preferable that an inclined surface that is inclined from an upper surface of the operation grip toward a side surface is formed in a front portion of the upper portion of the operation grip.

  Furthermore, in the operation lever device of the working machine according to the present invention, it is preferable that the release switch is provided below the inclined surface.

  In the operation lever device of the working machine according to the present invention, it is preferable that the operation grip itself constitutes the enable switch.

  In the operation lever device of the working machine of the present invention, the enable switch is provided at the same height as the operation dial, so that the operator can easily operate the release switch when operating the operation dial while pressing the enable switch with the palm of the hand. It becomes possible to press. Therefore, the operating lever device of the working machine of the present invention can operate the release switch and the operating grip without lifting the palm from the enable switch.

  Further, in the operating lever device of the working machine according to the present invention, by providing the release switch on the operation dial, the operator can further push the release switch more comfortably, so that the operability can be improved.

  Furthermore, in the operating lever device of the working machine according to the present invention, a release switch is provided between a plurality of protrusions provided on the peripheral surface of the operating dial, so that even if the operating dial is inadvertently contacted, the protrusions are contacted. It is possible to prevent the release switch from being pressed due to contact. Therefore, the operating lever device of the working machine according to the present invention can prevent an erroneous operation of the release switch.

  Moreover, in the operating lever device of the working machine according to the present invention, by forming the operating grip in a cylindrical shape, the operator can easily grip the operating grip, and the release switch can be pushed more easily. Therefore, the operation lever device of the working machine of the present invention can further improve the operability.

  Further, in the operation lever device of the working machine according to the present invention, by forming the inclined surface at the front part of the upper part of the operation grip, when the operator grips the operation grip, the finger interferes with the operation grip by the inclined surface. It can be suppressed. For this reason, it becomes easy for the operator to grasp the operation grip, and the release switch can be pushed more comfortably. Therefore, the operation lever device of the working machine of the present invention can further improve the operability.

  Further, in the operation lever device of the working machine according to the present invention, by providing the release switch below the inclined surface, the operator can suppress the finger pressing the release switch from interfering with the operation grip. For this reason, the operator can easily press the release switch. Therefore, the operation lever device of the present invention can further improve the operability.

  Further, in the operation lever device of the working machine according to the present invention, the operation grip itself constitutes the enable switch, so that the operation grip and the enable switch are constituted by common parts, so that the number of parts can be reduced. Therefore, the operating lever device of the working machine of the present invention can reduce the manufacturing cost.

It is a side view of an aerial work vehicle showing an embodiment of the present invention. It is a perspective view of the operation lever device of the embodiment. It is a top view of the operation lever device of the same embodiment. It is a block diagram of the drive system of the boom of the embodiment. It is a perspective view of the state which grasped the operation lever device of the embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a side view of an aerial work vehicle 100 (work machine) showing an embodiment of the present invention. The aerial work vehicle 100 is used when working at a high place in electrical work or construction work. The aerial work vehicle 100 is provided with an operation lever device 101 of the present invention.

  First, the overall configuration of the aerial work vehicle 100 will be briefly described. The aerial work vehicle 100 includes wheels 3 and outriggers 4 provided on the front and rear of a vehicle body 2 which is a main body portion of the vehicle 1 that can travel, a swivel base 5 mounted on the car body 2, and the swivel base 5. The boom 7 etc. with which the edge part was connected so that raising / lowering was possible were provided.

  The swivel base 5 is swiveled together with the boom 7 by a swivel drive device 6 provided on the vehicle body 2.

  The boom 7 has a base boom 7A, an intermediate boom 7B, and a tip boom 7C, and is configured to be nested in the base boom 7A in this order from the outside to the inside. The boom 7 is driven to rise and fall by a raising and lowering cylinder 8 and is driven to extend and contract by an extendable cylinder 9.

  A workbench 12 is attached to the distal end portion 7Ca of the distal end boom 7C of the boom 7 via an attitude maintaining member 10 and an oscillation drive device 11. The work table 12 is driven to swing by the swing drive device 11.

  An operation panel 13 is provided on the work table 12. The operation panel 13 is used to perform the raising / lowering / extending / revolving operation of the boom 7, the swinging operation of the work table 12, the operation of the accelerator switch, and the like while the operator is on the work table 12.

  The operation panel 13 is provided with the operation lever device 101 of the present invention. The operation lever device 101 is used for raising / lowering, extending / contracting and turning the boom 7. Specifically, the operation lever device 101 drives and operates the turning drive device 6, the hoisting cylinder 8, and the telescopic cylinder 9.

  Next, the configuration of the operation lever device 101 of the present invention will be described with reference to FIGS. The operation lever device 101 is a joystick type operation lever device that can be operated in three axial directions (front-rear direction, left-right direction, and left-right turn direction).

  The operation lever device 101 includes a base 102 provided on the operation panel 13, an operation dial 103 provided above the base 102, an operation grip 104 provided above the operation dial 103, and an operation grip 104. An enable switch S1 provided (shown in parentheses) and a release switch S2 provided at the same height as the operation dial 103 are provided.

  The base 102 is formed in a cylindrical shape whose upper and lower surfaces are open. The lower portion 102a of the base 102 is formed in a bellows shape by a flexible member. Although not shown, an operating rod is disposed in the base 102 so as to penetrate in the vertical direction. The operation rod is held by a pivot bearing so as to be tiltable in the front-rear direction and the left-right direction.

  The operation dial 103 is provided on the upper side of the base 102 so as to be rotatable around the axis of the operation rod (circumferential direction). The operation dial 103 is used for turning the boom 7. Specifically, the boom 7 is turned to the right by rotating the operation dial 103 to the right, and the boom 7 is turned to the left by rotating to the left.

  The operation dial 103 is formed in a polygonal ring shape. A plurality of protrusions 103b are provided on the peripheral surface 103a of the operation dial 103 at predetermined intervals. The plurality of protrusions 103b are formed by forming the peripheral surface 103a of the operation dial 103 into a polygonal shape. Specifically, the peripheral surface 103a of the operation dial 103 is formed by connecting seven curved surfaces 131a curved inward to the left and right as shown in FIG. A joint portion of each curved surface 131a forms a protrusion 103b.

  On the peripheral surface 103a (each curved surface 131a) of the operation dial 103, a plurality of vertical grooves 103c are provided side by side on the left and right sides of each protrusion 103b.

  The operation grip 104 is provided on the operation rod on the upper side of the operation dial 103, and is provided so as to be tiltable in the front-rear direction and the left-right direction by the operation rod. The operation grip 104 is used for raising and lowering the boom 7 and expanding and contracting.

  Specifically, the boom 7 is lifted by tilting the operation grip 104 forward, and the boom 7 is tilted by tilting backward. Further, the boom 7 is extended by tilting the operation grip 104 in the left direction, and the boom 7 is contracted by tilting in the right direction. The operation grip 104 is returned to the position (neutral position) shown in FIG. 2 by a spring (not shown) when the hand is released from the operation grip 104.

  The operation grip 104 is formed in a cylindrical shape. The upper surface 104a of the operation grip 104 is formed to be closed, and the lower surface (not shown) is formed to be open. An inclined surface 104 c that is inclined from the upper surface 104 a of the operation grip 104 toward the side surface 104 b (circumferential surface) is formed on the front portion 141 of the upper portion of the operation grip 104. The inclined surface 104c is formed in a semicircular shape.

  Moreover, the outer surface (the upper surface 104a and the side surface 104b) of the operation grip 104 is formed flat. In other words, the outer surface of the operation grip 104 is formed so that there is no protrusion.

  The enable switch S1 is composed of the operation grip 104 itself. That is, the enable switch S1 is provided on the upper portion of the operation grip 104 so as to be pressed downward so as to be the same as the height of the upper surface 104a of the operation grip 104. Accordingly, the enable switch S1 is disposed so as to be pushed with the palm of the hand without protruding to the upper surface 104a of the operation grip 104. The enable switch S1 is turned on when pressed, and turned off when not pressed. The enable switch S1 outputs a signal for enabling the tilting operation of the operation grip 104 and the rotation operation of the operation dial 103 while being on.

  The release switch S2 is provided on the peripheral surface 103a of the operation dial 103 below the inclined surface 104c and between the plurality of protrusions 103b. As shown in FIG. 3, the height of the release switch 106 is set to be lower than the height of the plurality of protrusions 103b in the width direction (lateral direction of the operation dial 103).

  The release switch S2 is provided so that it can be pressed, and is turned on when pressed, and turned off when not pressed. Further, the release switch S2 turns on the signal output of the enable switch S1 once pressed.

  That is, once the release switch S2 is pressed while the enable switch S1 is pressed, the tilting operation of the operation grip 104 and the rotation operation of the operation dial 103 are enabled even if the release switch S2 is not always pressed. . Further, even when the enable switch S1 is pressed while the release switch S2 is pressed first, the tilting operation of the operation grip 104 and the rotation operation of the operation dial 103 are effective. That is, the boom 7 can be raised, retracted, and swiveled. This content will be specifically described below using the drive system 201 of the boom 7 shown in FIG.

  The drive system 201 for the boom 7 is configured around a controller 51 that controls the drive of the boom 7.

  On the input side of the controller 51, a rotation angle detection sensor 30 that detects the rotation angle of the operation dial 103, a first tilt angle detection sensor 31 that detects a tilt angle in the front-rear direction of the operation rod, and a tilt angle in the left-right direction of the operation rod. A second tilt angle detection sensor 32 is connected to detect.

  Although not shown, the rotation angle detection sensor 30 is provided on the operation dial 103. Although not shown, the first tilt angle detection sensor 31 and the second tilt angle detection sensor 32 are provided on the lower side of the operation rod.

  Further, the enable switch S <b> 1 and the release switch S <b> 2 are connected to the input side of the controller 51 via the holding circuit 50. The holding circuit 50 holds an H level signal output even when the release switch S2 is turned off while the enable switch S1 is turned on.

  As described above, the holding circuit 50 continues to output an H level signal even when the release switch S2 is turned off in a state where the enable switch S1 is turned on, and while the enable switch S1 is turned on, the operation grip 104 is maintained. The tilting operation and the rotation operation of the operation dial 103 are effective.

  The undulation cylinder 8, the telescopic cylinder 9, and the turning drive device 6 are connected to the output side of the controller 51 through a hydraulic drive circuit 52. The hydraulic drive circuit 52 drives the hoisting cylinder 8, the telescopic cylinder 9, and the turning drive device 6 with hydraulic pressure.

  While the H level signal is output from the holding circuit 50, that is, while the enable switch S1 is turned on, the controller 51 reads the detection signals output from the sensors 30 to 32, and the respective detections thus read. A control signal is output to the hydraulic drive circuit 52 based on the signal.

  The hydraulic drive circuit 52 is configured to output drive signals to the hoisting cylinder 8, the telescopic cylinder 9, and the turning drive device 6 based on a control signal output from the controller 51. The hoisting cylinder 8, the telescopic cylinder 9, and the swing drive device 6 are configured to perform hoisting, telescopic, and pivoting of the boom 7 based on the drive signal output from the hydraulic drive circuit 52.

  Next, the operation method of the boom 7 by the operation lever device 101 will be described with reference to FIGS. 4 and 5.

(Preparation of boom 7 operation)
As shown in FIG. 5, the operator places the flat 500a of the hand 500 on the upper surface 104a of the operation grip 104 (enable switch S1), stretches the finger 500b, grasps the operation grip 104 and the operation dial 103, and arbitrarily presses the finger 500b. (For example, the middle finger) is placed on the release switch S2.

  Subsequently, the operator presses the operation grip 104 (enable switch S1) with the palm 500a of the hand 500, and once presses and releases the release switch S2 with any finger 500b. As a result, the tilting operation of the operation grip 104 and the rotation operation of the operation dial 103 are enabled while the operation grip 104 (enable switch S1) is being pressed. That is, the raising / lowering / extending / turning operation of the boom 7 becomes effective.

  The above contents will be specifically described with reference to FIG. When the enable switch S1 and the release switch S2 are pressed (turned on), the holding circuit 50 enables the enable switch S1 to be turned on even when the enable switch S1 is turned on and the release switch S2 is turned off. Continue to output an H level signal. While the H level signal is output from the holding circuit 50, that is, while the enable switch S1 is being pressed, the controller 51 reads the detection signals output from the sensors 30 to 32, and the respective detections thus read. A control signal can be output to the hydraulic drive circuit 52 based on the signal.

(Boom 7 hoisting operation)
After the preparation for the operation of the boom 7 is completed, the operator tilts the boom 7 by tilting the grasping operation grip 104 in the front-rear direction while pressing the enable switch S1 with the flat 500a of the hand 500. Specifically, the operation grip 104 is tilted forward to raise the boom 7, and the boom 7 is tilted backward to tilt the boom 7.

  The above contents will be described with reference to FIG. When the operation grip 104 is tilted in the front-rear direction, the first tilt angle detection sensor 31 detects the tilt angle of the operation grip 104 and outputs a detection signal. The controller 51 reads the detection signal output from the first tilt angle detection sensor 31 and outputs a control signal to the hydraulic drive circuit 52 based on the read detection signal. The hydraulic drive circuit 52 outputs a drive signal to the hoisting cylinder 8 based on the control signal output from the controller 51. The hoisting cylinder 8 raises and lowers the boom 7 based on the drive signal output from the hydraulic drive circuit 52.

(Expansion operation of boom 7)
After the preparation for the operation of the boom 7 is completed, the operator extends and retracts the boom 7 by tilting the grasping operation grip 104 in the left-right direction while pressing the enable switch S1 with the flat 500a of the hand 500. Specifically, the operation grip 104 is tilted to the left to extend the boom 7, and the boom 7 is contracted to the right to contract.

  The above contents will be described with reference to FIG. When the operation grip 104 is tilted in the left-right direction, the second tilt angle detection sensor 32 detects the tilt angle of the operation grip 104 and outputs a detection signal. The controller 51 reads the detection signal output from the second tilt angle detection sensor 32, and outputs a control signal to the hydraulic drive circuit 52 based on the read detection signal. The hydraulic drive circuit 52 outputs a drive signal to the telescopic cylinder 9 based on the control signal output from the controller 51. The telescopic cylinder 9 expands and contracts the boom 7 based on the drive signal output from the hydraulic drive circuit 52.

(Boom 7 turning operation)
After completing the preparation for operating the boom 7, the operator rotates the boom 7 by rotating the grasping operation dial 103 in the left-right direction while pressing the enable switch S <b> 1 with the flat 500 a of the hand 500. Specifically, the operation dial 103 is rotated to the right to rotate the boom 7 to the right, and the left is rotated to rotate the boom 7 to the left.

  The above contents will be described with reference to FIG. When the operation dial 103 is rotated in the left-right direction, the rotation angle detection sensor 30 detects the rotation angle and outputs a detection signal. The controller 51 reads the detection signal output from the rotation angle detection sensor 30, and outputs a control signal to the hydraulic drive circuit 52 based on the read detection signal. The hydraulic drive circuit 52 outputs a drive signal to the turning drive device 6 based on the control signal output from the controller 51. The turning drive device 6 turns the boom 7 based on the drive signal output from the hydraulic drive circuit 52.

(End of boom 7 operation)
The operator releases the hand 500 from the operation grip 104 (enable switch S1). Thereby, the tilting operation of the operation grip 104 and the rotation operation of the operation dial 103 are invalidated. That is, the raising / lowering / extending / turning operation of the boom 7 becomes invalid.

  The above contents will be described with reference to FIG. When the hand 500 is released from the enable switch S1, the enable switch S1 is turned off. As a result, an H level signal is not output from the holding circuit 50, and no detection signal is output from each of the sensors 30 to 32. Therefore, the controller 51 stops outputting a control signal to the hydraulic drive circuit 52, and the hydraulic drive circuit 52 stops driving the hoisting cylinder 8, the telescopic cylinder 9, and the turning drive device 6.

  Next, effects of the operation lever device 101 of the present embodiment will be listed and described.

(1) An operation lever device 101 according to the present embodiment has an operation grip 104 that can be tilted, an operation dial 103 that is provided on the lower side of the operation grip 104 so as to be rotatable in the circumferential direction, and an operation grip 104 that extends downward. The enable switch S1 that enables the tilting operation of the operation grip 104 and the rotation operation of the operation dial 103 by pressing the switch, and the signal output of the enable switch S1 that is provided at the same height position as the operation dial 103. And a release switch S2 for turning on.

  As a result, when the operator operates the operation dial 103 while pressing the enable switch S1 with the flat 500a of the hand 500, a state where the force of the finger 500b is lost due to fatigue due to long-time work or a thick electric shock prevention Even when it is difficult to understand the sensation of the fingertip with the rubber bag, it is possible to push the release switch S2 without difficulty. Therefore, the operation lever device 101 of the present embodiment can operate the release switch S2 and the operation grip 104 without lifting the palm 500a of the hand 500 from the enable switch S1. That is, the operation lever device 101 of this embodiment not only does not lift the palm 500a of the hand 500 from the enable switch S1, but also makes it easier to press the release switch S2, and the lever operation (operation grip 104 with the release switch S2 pressed). Operability can be improved. As a result, there is no possibility that the operation of the operation lever device 101 becomes invalid against the intention of the operator.

(2) Further, in the operation lever device 101 of the present embodiment, the release switch S2 is provided on the operation dial 103. As a result, the operator can push the release switch S2 more comfortably. Therefore, the operation lever device 101 of the present embodiment can improve operability.

(3) Further, in the operation lever device 101 of the present embodiment, the plurality of protrusions 103b are provided on the peripheral surface 103a of the operation dial 103, and the release switch S2 is provided between the plurality of protrusions 103b. As a result, even when the operation dial 103 is inadvertently contacted, it is possible to prevent the release switch S2 from being pushed by contact of the contact with the protrusion 103b. Therefore, the operation lever device 101 according to the present embodiment can prevent an erroneous operation of the release switch S2.

(4) Further, in the operation lever device 101 of the present embodiment, the operation grip 104 is formed in a cylindrical shape. As a result, the operator can easily grasp the operation grip 104, and can press the release switch S2 without difficulty. Therefore, the operation lever device 101 of the present embodiment can further improve the operability.

(5) Furthermore, in the operation lever device 101 of the present embodiment, the inclined surface 104 c that is inclined from the upper surface 104 a of the operation grip 104 toward the side surface 104 b is formed on the front portion 141 of the upper portion of the operation grip 104. Accordingly, the operator can prevent the finger from interfering with the operation grip 104 by the inclined surface 104c when the operation grip 104 is gripped. For this reason, the operator can easily grasp the operation grip 104 and can push the release switch S2 more easily. Therefore, the operation lever device 101 of the present embodiment can further improve the operability.

(6) Further, in the operation lever device 101 of the present embodiment, the release switch S2 is provided below the inclined surface 104c. Thus, the operator can easily press the release switch S2 because the finger 500b pressing the release switch S2 is prevented from interfering with the operation grip 104. Therefore, the operation lever device 101 of the present embodiment can further improve the operability.

(7) In the operation lever device 101 according to the present embodiment, the operation grip 104 itself constitutes the enable switch S1. As a result, the operation grip 104 and the enable switch S1 are formed of common parts, so that the number of parts can be reduced. Therefore, the operating lever device 101 of the present embodiment can reduce the manufacturing cost. Further, in the operation lever device 101 of the present embodiment, since the operation grip 104 and the enable switch S1 are integrated, there is no groove between the operation grip 104 and the enable switch S1, and foreign matter or the like causing a failure is pinched. Therefore, quality can be improved.

(8) Further, in the operation lever device 101 of the present embodiment, the outer surface (the upper surface 104a and the side surface 104b) of the operation grip 104 is formed flat. That is, the operation lever device 101 of the present embodiment is formed so that there is no protrusion on the outer surface of the operation grip. This makes it easier for the operator to grip the operation grip 104 and more easily press the release switch S2. Therefore, the operation lever device 101 of the present embodiment can further improve the operability.

(9) Further, in the operation lever device 101 of the present embodiment, the height of the release switch S2 is higher than the height of the plurality of protrusions 103b in the width direction (lateral direction of the operation dial 103) on the peripheral surface 103a of the operation dial 103. Set low. As a result, even if the operation dial 103 is inadvertently contacted, the contact object easily comes into contact with the protrusion 103b, and it is possible to sufficiently prevent the release switch S2 from being pushed. Therefore, the operating lever device 101 of the present embodiment can improve the prevention of erroneous operation of the release switch S2.

(10) Furthermore, in the operation lever device 101 of the present embodiment, a plurality of protrusions 103 b are provided on the peripheral surface 103 a of the operation dial 103. As a result, the operator can easily rotate the operation dial 103 by holding the operation dial 103 with the fingers 500b placed on the plurality of protrusions 103b. Therefore, the operation lever device 101 of the present embodiment can improve the operability of the operation dial 103.

(11) Furthermore, in the operation lever device 101 of the present embodiment, a plurality of vertical grooves 103 c are provided on the left and right sides of each protrusion 103 b of the peripheral surface 103 a of the operation dial 103. As a result, the operator can easily rotate the operation dial 103 because the finger 500b is caught in the plurality of vertical grooves 103c when the operation dial 103 is gripped, thereby preventing slipping. Therefore, the operation lever device 101 of the present embodiment can further improve the operability of the operation dial 103.

  As mentioned above, although embodiment which concerns on this invention was illustrated, these embodiment does not limit the content of this invention. Various modifications can be made without departing from the scope of the claims of the present invention.

  For example, in the operation lever device 101 of the present embodiment, the operation grip 104 itself constitutes the enable switch S1. However, the enable switch S1 may constitute at least a part of the operation grip 104. For example, although not shown, an enable switch may be provided on the upper surface of the operation grip.

  Further, in the operation lever device 101 of the present embodiment, the release switch S2 is provided at the same height position as the operation dial 103 by providing the release switch S2 on the operation dial 103. However, the release switch S <b> 2 is not necessarily provided on the operation dial 103 and may be provided at the same height as the operation dial 103. For example, in the case where the shape of the operation dial 103 is not annular but has a shape that is partially missing from the annular shape, such as a C shape, the release switch S2 may be provided in the missing portion.

  In the present embodiment, the case where the operation lever device 101 of the present invention is used for the operation of the boom 7 has been described. However, objects (structures, devices, etc.) operated by the operation lever device are limited to the boom 7. Not. Moreover, although the case where the operating lever device 101 of the present invention is provided in the aerial work vehicle 100 has been described in the present embodiment, it may be provided in another working machine such as a crane.

100 aerial work platform (work machine)
DESCRIPTION OF SYMBOLS 101 Operation lever apparatus 103 Operation dial 103a Operation dial 103a Operation surface 103b Protrusion 104 Operation grip 104a Operation grip upper surface 104b Operation grip side surface 104c Operation grip inclined surface 141 Front part of operation grip upper part S1 Enable switch S2 Release switch

Claims (7)

An operation grip that can be tilted,
An operation dial provided on the lower side of the operation grip so as to be rotatable in the circumferential direction;
An enable switch that enables tilting operation of the operation grip and rotation operation of the operation dial by pressing down at least a part of the operation grip;
An operating lever device for a working machine, comprising: a release switch that is provided at the same height as the operation dial and that turns on a signal output of the enable switch by pressing. In the operation lever device of the working machine according to claim 1,
An operation lever device for a working machine, wherein the release switch is provided on the operation dial. In the operation lever device of the work machine according to claim 2,
An operation lever device for a working machine, wherein a plurality of protrusions are provided on a peripheral surface of the operation dial, and the release switch is provided between the plurality of protrusions. In the operation lever device of the working machine according to any one of claims 1 to 3,
An operating lever device for a working machine, wherein the operating grip is formed in a cylindrical shape. In the operation lever device of the working machine according to any one of claims 1 to 4,
An operation lever device for a working machine, wherein an inclined surface that is inclined from an upper surface to a side surface of the operation grip is formed at a front portion of an upper portion of the operation grip. In the operation lever device of the working machine according to claim 5,
An operating lever device for a working machine, wherein the release switch is provided below the inclined surface. In the operation lever device of the working machine according to any one of claims 1 to 6,
An operating lever device for a working machine, wherein the operating grip itself constitutes the enable switch.