JPH0676288U - Crane equipment for aerial work vehicles - Google Patents

Abstract

(57) [Abstract] [Purpose] A crane device for an aerial work vehicle that can easily rotate the workbench while maintaining the turning angle position of the crane device provided on the workbench when turning the workbench. To get [Structure] When the swing operation of the workbench 6 is performed when the automatic mode is set by the automatic mode switch, the swing operation of the crane swing device 10 is controlled so as to maintain the swing angle position of the crane device 10 as it is. . As a result, if only the turning operation of the workbench 6 is performed, the crane device 10
The workbench 6 can be swung while maintaining the swivel angle position. Therefore, even a person who is inexperienced in operation can use the workbench 6
Also, the turning operation can be performed without applying a load to the crane device 10.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a crane device provided in an aerial work vehicle, and further relates to operation control of this crane device.

[0002]

[Prior art]

 For aerial work vehicles that perform work such as power distribution work by installing a work platform on the tip of a boom that can be freely extended and retracted on the vehicle body, a crane for lifting equipment necessary for power distribution work on this work platform. Some devices are installed. In addition, when attaching the equipment hoisted by this crane device to a telephone pole, a manipulator is provided outside the workbench in order to improve the working environment for the workers on the workbench and to perform swift work. In some cases, an operator can remotely operate the manipulator from inside the workbench to perform electrical work on the utility pole.

In such an aerial work vehicle, in order to improve workability, the workbench is arranged so as to be rotatable with respect to the boom, and the crane device is arranged so as to be rotatable with respect to the workbench. Has been done. Here, the turning operation of the workbench and the crane device is performed by operating the respective operation levers provided on the workbench. When hoisting equipment such as switches with this crane device and mounting it on a utility pole using a manipulator, first place the manipulator near the position where the switch is mounted on the utility pole. Then, the switch is lifted by the crane device installed on the workbench, and the manipulator is operated to attach the switch to the utility pole by the mounting member.

[0004]

[Problems to be solved by the device]

 Depending on the content of the work, it may be necessary to rotate the workbench (in a temporarily fixed state) before attaching the switch to the utility pole to perform work using the manipulator in other places. In this case, since the crane device is installed on the work platform, the crane device will also rotate when the work platform is swiveled, but the switch suspended from the crane device is in a temporarily fixed state, so the crane Cannot be removed from the device. Therefore, in order to rotate only the work platform while maintaining the swing position of the crane device as it is, it is necessary to rotate the crane device in the opposite direction according to the swing operation of the work platform.

However, in order to perform the swing operation of the work table and the swing operation of the crane device in the opposite direction at the same time, it is necessary to simultaneously operate the respective operation levers to adjust the swing amount. In other words, there is a problem in that if the operation is mistaken, a large load will be applied to the workbench and the swing operation part of the crane device.

The present invention has been made in view of the above problems, and when the workbench is rotated, the workbench can be easily rotated while maintaining the rotation angle position of the crane device provided on the workbench. It is intended to provide a crane device for an aerial work vehicle that can be used.

[0007]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the crane device for an aerial work vehicle according to the present invention is provided with a work platform which is pivotable at the tip of the boom, and the crane device is pivotably provided on this work platform. ing. Further, a workbench turning operation means for performing a turning operation of the workbench, a crane device turning operation means for performing a turning operation of the crane device, and an automatic mode switch capable of setting an automatic mode are provided. Then, when the controller turns the work table when the automatic mode is set by the automatic mode switch, the turning operation of the crane turning device is performed so that the turning angle position of the crane device is maintained as it is. To control.

[0008]

[Action]

 In such a crane device for aerial work vehicles, when the work platform is rotated in the automatic mode, the crane device rotates in the opposite direction in response to the work platform's swing operation, so the swing angle of the crane device is increased. Can hold position.

[0009]

【Example】

 Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. First, an aerial work vehicle equipped with a crane device according to the present invention will be described with reference to FIG. A boom swivel 3 is mounted on a vehicle body 2 of the aerial work vehicle 1 so that the boom swivel 3 can swivel with respect to the vehicle body 2, and a boom 4 is rotatably pivoted on an upper portion of the boom swivel base 3. . The boom 4 is composed of a plurality of boom members such as a base boom 4a pivotally mounted on the boom swivel 3, an intermediate boom 4b, and a tip boom 4c, and is telescopically (nested). Further, the hoisting operation of the boom 4 is performed by the operation of the boom hoisting cylinder 5 mounted between the base end boom 4a and the swivel base 3, and the telescopic operation is performed by a boom telescopic cylinder (not shown) incorporated in the boom 4. No.) is activated.

A workbench 6 including a support base 6a and an operation chamber 6b is attached to the front end of the tip boom 4c. The workbench 6 is always held horizontal regardless of the ups and downs of the boom 4, and is rotatable with respect to the boom 4. A crane device 10 is mounted on the support base 6a. The crane device 10 is provided with a crane swivel base 11 which is swivelable with respect to a support base 6 a, a first arm 12 which is vertically arranged on the crane swivel base 11, and a hoisting and lowering motion with respect to the first arm 12. The second arm 13 is provided. Then, the rope 14 is hung down via the sheave attached to the tip of the second arm 13. A hook for hooking equipment for power distribution work is attached to the tip of the rope 14, and the other end of the rope 14 is hung around a winch (not shown) built in the crane device 10. Then, the equipment is hoisted to a high place by hoisting the rope 14 with this winch.

Two manipulators 15, 15 are attached to the front of the operation chamber 6b so that the operation chamber 6b can be undulated and bent, and a gripper 16 can be opened and closed at the tip thereof. And it is mounted so that it can rotate. Then, the operator boarding the operation room 6b moves up and down the boom 4 to move it to an arbitrary height, and then remotely operates the manipulator 15 from the operation room 6b to perform desired work safely. You can do it

Next, a case where a power distribution device such as a switch is attached to an electric pole using the work vehicle having the above structure will be described with reference to FIGS. 1 and 3. First, the crane device 10 provided on the workbench 6 is turned to the position shown by the alternate long and short dash line, and the switch 40 on the ground is hooked on the hook attached to the tip of the rope 14 of the crane device 10. . Then, the switch 40 is lifted by winding the winch, the crane device 10 is turned to the position shown by the solid line, and the crane device 10 is moved to the mounting position on the utility pole 42. Then, the manipulators 15 and 15 are remotely operated from the operation room 6b and attached to the electric pole 42 using the fixing member 41.

Depending on the content of the work, before the switch 40 is firmly fixed to the power pole 30 by using the fixing member 41, the switch 40 is temporarily fixed to the power pole 42 and the manipulator 15 is used. , 15, it may be necessary to connect the electric wires located on the side of the switch 40. In this case, when the workbench 6 is turned to move the manipulators 15 and 15 to the work position, the crane device 10 is also turned. Therefore, if it is left as it is, it will be pulled by the rope 14 and will give a load to the workbench 6 and the crane device 10. Therefore, by rotating the crane device 10 in the direction opposite to the turning direction of the workbench 6, the crane device It is necessary to maintain the turning angle position of 10 so as not to apply a load to the workbench 6 or the crane device 10.

However, the turning operation of the workbench 6 and the crane device 10 is performed by operating the workbench turning operation means 33 and the crane device turning operation means 32 provided in the operation room 6b. For this reason, the operator has to separately operate each operation lever with both hands, and it requires skill in operation to rotate only the work table 6 while maintaining the rotation angle position of the crane device 10. Therefore, according to the crane device for an aerial work vehicle according to the present invention, the turning operation can be easily performed.

In addition to the work platform turning operation means 33 and the crane device turning operation means 32 described above, this crane device includes a work platform turning angle detector 35 for detecting a turning angle of the work table 6 with respect to the boom 4, and a crane device 10. A crane device turning angle detector 34 for detecting a turning angle with respect to the workbench 6 and an automatic mode switch 31 for transmitting an automatic mode signal are provided, and signals from these operating means and the like are transmitted to the controller 36. The controller 36 controls the operation of the work platform turning means 39, the crane device turning means 38, and the alarm 37 based on the signals from the operating device, the detector, and the like.

Here, when the automatic mode switch 31 is not turned on, the controller 36 operates on the basis of operation signals from the workbench turning operation means 33 and the crane device turning operation means 32. The operation control of the crane device turning means 38 is performed. When the automatic mode switch 31 is turned on, the controller 36 turns the crane device turning means 38 based on the operation signal from the crane device turning operation means 32. When the operation means 33 is operated, the turning operation control of the work platform turning means 39 and the turning operation control of the crane device turning means 38 are performed.

The turning operation control of the crane device detects the turning angle position of the work table 6 and the turning angle position of the crane device 10 when the automatic mode switch 31 is turned on by the turning angle detectors 34 and 35, respectively. As shown in FIG. 1, when the workbench 6 is turned to the right, the crane device 10 is turned to the left according to the turning angle. Therefore, even if the workbench 6 turns with respect to the boom 4, the crane device 10 can maintain the turning angle position with respect to the boom 4. As a result, it is possible to easily perform the turning operation without applying a load to the workbench 6 and the crane device 10. Further, in this case, when the turning angle of the crane device 10 reaches the turning limit angle, the turning of the workbench 6 is stopped and an indicator lamp or a buzzer provided in the operation room 6b is provided. The alarm 37 is activated to call the operator's attention.

In the above-mentioned embodiment, the signals detected by the workbench rotation angle detector and the crane rotation angle detector when the crane equipment is rotated in the opposite direction according to the rotation angle of the workbench. The controller controls the turning angle of the crane device based on the above, but the present invention is not limited to this, and the controller is based on the operation signal from the work platform turning operation device without using a detector. May control to rotate the crane device in the opposite direction by the same angle as the rotation angle of the work platform.

[0019]

[Effect of device]

 As described above, in the crane device for an aerial work vehicle according to the present invention, when the work platform is swung when the automatic mode is set by the automatic mode switch, the swing angle position of the crane device is set. Control the swing operation of the crane swing device so that As a result, by performing only the turning operation of the work table, the work table can be turned while maintaining the turning angle position of the crane device. Therefore, even an inexperienced person can perform the turning operation without imposing a load on the workbench and the crane device.

[Brief description of drawings]

FIG. 1 is a perspective view of a crane device according to the present invention.

FIG. 2 is a side view of an aerial work vehicle equipped with a crane device according to the present invention.

FIG. 3 is a block diagram of a crane device according to the present invention.

[Explanation of symbols]

 1 Aerial work vehicle 4 Boom 6 Workbench 10 Crane device 11 Crane swivel 15 Manipulator 16 Gripper 40 Switchgear 42 Utility pole

Claims (1)

[Scope of utility model registration request] 1. A work platform rotatably provided on a tip end portion of a boom, a crane device rotatably provided on the work platform, and a work platform turning operation means for performing a turning operation of the work platform, A crane device turning operation means for performing a turning operation of the crane device, an automatic mode switch capable of setting an automatic mode, and a work platform turning operation means when an automatic mode is set by the automatic mode switch. And a controller for controlling the swing operation of the crane swing device so that the swing angle position of the crane device with respect to the boom is maintained as it is when the work platform is swung by an operation signal. Crane device for aerial work vehicles.