JP2001206698A - Operation control device for aerial work vehicles - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To control interference of a work table without lowering the work efficiency of the whole work. An operation control device includes a telescopic boom provided on a vehicle body so as to be able to move up and down and expandable and contractable, and is pivotally provided at a distal end of a vertical post provided at an end of the telescopic boom so as to be vertically tiltable. It is a device for controlling the operation of the work table provided, and includes an operating device 31, an up-and-down angle sensor 15, an extension amount sensor 41, a turning angle sensor 43, and a controller 45. The controller 45 has a memory 47 in which an allowable swing angle range necessary for preventing interference between the workbench and the telescopic boom according to the detected value of the elevation angle sensor 15, and an allowable swing angle based on the detected value of the extension amount sensor 41. A correction circuit 49 for correcting the range, and an operation control of the worktable swing motor 29 and the up-and-down cylinder 15 in a direction to move the worktable closer to the telescopic boom when the detected value of the swing angle sensor 43 exceeds the corrected allowable swing angle range. And an operation regulating circuit 55 for performing the operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation control device for an aerial work vehicle, and more particularly, to a vertical post provided at the tip of a boom that can move up and down so as to be vertically swingable.
The present invention relates to an operation control device for an aerial work vehicle having a worktable rotatably provided at a tip of the vertical post.

[0002]

2. Description of the Related Art When performing electric construction work on a telephone pole,
Generally, an aerial work vehicle having a work table at the tip of a telescopic boom that can freely move up and down is used. This aerial vehicle has:
A swivel base that can be swiveled on the vehicle body, a telescopic boom pivotally connected to the swivel base, and a vertical post pivotally connected to the tip of the telescopic boom so as to swing up and down. There is a work table provided with a worktable having a large floor area provided at the tip so as to be pivotable. A leveling device is connected to the vertical post, and the leveling device operates in conjunction with the up / down operation of the telescopic boom to keep the vertical post in a vertical state at all times. For this reason, the work table is always kept in a horizontal state regardless of the up-and-down angle of the telescopic boom.

[0003] Here, the turning motion control of the work table is performed by an operation control device electrically connected to a turning operation device provided on the work table. That is, when the turning operation device is operated, the operation signal is sent to the operation control device, and the operation control device controls the operation of the turning motor, which is the turning drive source of the workbench, in accordance with the received operation signal. The operation of the turning motor is stopped when the table reaches a predetermined turning angle. In addition, an allowable turning angle range necessary for the work table to prevent interference with the telescopic boom is set in the operation control device, and when an operation exceeding the allowable turning angle range is performed by the turning operation device, Restricts pivoting motion of the worktable beyond the allowable pivot angle range. For this reason, it is possible to prevent the possibility that the work table abuts on the telescopic boom.

[0004]

However, the allowable swing angle range changes according to the up-and-down angle and the amount of extension of the telescopic boom, and the allowable swing angle range set in the operation control device is the changed allowable swing angle range. Of these, the narrowest allowable swing angle range is set. For this reason, depending on the up-and-down state and extension state of the telescopic boom, the turning operation may be restricted in spite of the work table having a sufficient gap until it comes into contact with the telescopic boom, thereby reducing the work efficiency of the entire work. . Therefore, if the interference control of the worktable by the operation control device is released in order to improve the work efficiency, there arises a problem that the worktable abuts on the telescopic boom and the worktable and the like are damaged.

The present invention has been made in view of such a problem, and provides an operation control device for an aerial work vehicle capable of restricting the interference of a work table without lowering the work efficiency of the whole work. The purpose is to do.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, an operation control device for an aerial work vehicle according to the present invention comprises a boom provided on a vehicle body so as to be able to move up and down, An operation control device for an aerial work vehicle, comprising: a support means that is tiltably provided on a work table; and a work table supported by a tip of the support means so as to be able to turn horizontally. Angle detecting means, a boom hoist angle detecting means provided on the boom for detecting the boom hoist angle, and preventing interference between the workbench and the boom according to the hoist angle detected by the boom hoist angle detecting means. Alarm means for setting a permissible turning angle range necessary for turning the work table closer to the boom side when the turning angle detected by the turning angle detection means exceeds the permissible turning angle range. Have composition It is.

According to the operation control device for an aerial work vehicle configured as described above, the allowable turning angle range is set in accordance with the boom up / down angle, and the turning angle detected by the turning angle detecting means exceeds the allowable turning angle range. Occasionally, the alarming means performs an alarming operation in response to the turning operation of bringing the work table closer to the boom side. In this specification, the alarm operation means an operation including an operation of regulating the operation of a boom or a workbench, an operation of issuing an alarm using an alarm buzzer, an alarm lamp, or the like.

As described above, since the allowable swing angle range according to the boom up / down angle is set, the allowable swing angle range according to the state of the boom can be applied, and the work table does not contact the boom. The worktable can be turned to the vicinity of the boom, and the work efficiency of the entire work can be improved.

In the operation control device for an aerial work vehicle having the above-mentioned structure, the boom is configured to be extendable and retractable, and boom extension amount detection means for detecting an extension amount of the boom is provided. The swing angle range is corrected according to the extension amount detected by the means, and when the swing angle detected by the swing angle detection means exceeds the corrected swing angle range, the work platform is moved closer to the boom side. Alternatively, an alarm operation may be performed.

According to the operation control device for an aerial work vehicle having the above-described structure, the boom thickness changes when the boom extension amount changes. Therefore, even when the undulation angle is the same, the allowable turning angle range is adjusted according to the boom extension amount. Changes. For this reason, the warning means corrects the allowable turning angle range according to the extension amount detected by the boom extension amount detecting means, and when the turning angle detected by the turning angle detecting means exceeds the corrected allowable turning angle range. Then, an alarm is activated for the operation of bringing the work table closer to the boom side.

As described above, by setting the allowable swing angle range in consideration of the amount of extension of the boom in addition to the elevation angle of the boom, the allowable swing angle range according to the state of the boom can be applied. The work table can be pivoted to the vicinity of the boom without contacting the boom with the boom, and the work efficiency of the entire work can be further improved.

In the operation control device for an aerial work vehicle configured as described above, the alarm means causes the work table to approach the boom side when the turning angle detected by the turning angle detecting means exceeds an allowable turning angle range. An alarm operation may be performed for the boom up / down operation.

According to the operation control device for an aerial work vehicle having the above-mentioned structure, when the turning angle detected by the turning angle detecting means exceeds the allowable turning angle range, the alarm means causes the work table to approach the boom side. An alarm operation is performed for the up / down operation.

When the boom is in the negative angle state and the boom is tilted over the allowable swing angle range and the boom is tilted down, the possibility that the work bench approaches the boom and comes into contact with the boom increases. I do. For this reason, when the turning angle detected by the turning angle detecting means exceeds the allowable turning angle range, the warning means performs a warning operation for the up-and-down operation of the boom for bringing the work table closer to the boom side.

As described above, when the turning angle exceeds the allowable turning angle range, the alarm is issued for the up / down operation of the boom for bringing the work table closer to the boom side. Contact can be prevented beforehand.

In the operation control device for an aerial work vehicle having the above-mentioned structure, there is provided a support angle detecting means provided on either the support means or the boom for detecting an angle between the support means and the boom. The allowable turning angle range may be set by using the support angle detected by the detecting means instead of the undulating angle.

According to the operation control device for an aerial work vehicle having the above structure, the allowable turning angle range of the worktable changes according to the angle between the support means and the boom. The allowable turning angle range can be set by using the angle instead of the undulating angle.

In the operation control device for an aerial work vehicle having the above structure, a leveling actuator for tilting the support means is provided, and an allowable turning angle range is variably set according to the tilting movement of the support means by the leveling actuator. You may.

According to the operation control device for an aerial work vehicle configured as described above, when the leveling actuator is operated, the support means tilts, and the angle between the support means and the boom changes.
Then, the allowable turning angle range is variably set according to the tilting movement of the support means. Thus, by variably setting the allowable swing angle range according to the operation of the leveling actuator,
By appropriately setting the permissible turning angle range according to the tilting state of the worktable, it is possible to control the interference of the worktable with the boom by the leveling operation.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to FIGS. This embodiment shows an aspect of an aerial work vehicle having a worktable with a large floor area at the tip of a telescopic boom that is capable of swiveling and telescopic movement on a vehicle body. Before describing the operation control device first, an aerial work vehicle equipped with the operation control device will be described. Aerial work vehicle 1
As shown in FIG. 1, the vehicle is configured with a truck as a base, has a driving cabin 5 in front of the vehicle body 3, and protrudes outward on both front and rear sides of the vehicle body 3 behind the driving cabin 5. Outrigger jack 7 that stably supports 3
Are arranged. A swivel 9 projecting upward is provided on a rear portion of the vehicle body 3. The turntable 9 is driven by a turn motor 10 provided in the vehicle body 3 below the turntable 9.
Is configured to pivot. A telescopic boom 11 configured to be telescopic and capable of telescopic movement is connected to the upper part of the swivel 9. A telescopic cylinder 13 is provided in the telescopic boom 11.
Is built in, and the telescopic boom 11 is configured to be telescopically operated by the telescopic operation of the telescopic cylinder 13.
An up-and-down cylinder 15 is pivotably connected between the lower surface of the telescopic boom 11 and the lower part of the swivel table 9 so that the telescopic boom 11 is raised and lowered by the telescopic operation of the up-and-down cylinder 15. I have.

At the tip of the telescopic boom 11, a vertical post 1
7 are pivotally connected in the vertical direction so that the vertical post 1
The front end of 7 is provided with a flange portion 17a projecting in the horizontal direction. A leveling cylinder 19 is pivotally connected between the distal end of the telescopic boom 11 and the flange portion 17a.
7 can be tilted in the front-rear direction of the vehicle body 3 in a vertical plane. The leveling cylinder 19 is provided with a detection value of an up / down angle sensor 21 provided on the telescopic boom 11 for detecting the undulation angle of the telescopic boom 11 with respect to the vehicle body 3 and a vertical position for detecting an angle between the telescopic boom 11 and the vertical post 17. Post angle sensor 23 provided on post 17
Based on the detected value, the expansion / contraction operation is controlled so that the vertical post 17 is oriented in the vertical direction.

A turning mechanism 25 is provided above the flange portion 17a of the vertical post 17, and a work table 27 having a large floor area is mounted above the turning mechanism 25. The turning mechanism 25 has a worktable turning motor 29, and the worktable 27 can be turned by the operation of the worktable turning motor 29. The work table 27 includes a plate-shaped bottom plate 27a and a bottom plate 2a.
A workbench handrail 27b protruding upward from the periphery of 7a;
Telescopic boom 1 provided on bottom plate 23 on the front side of work table 27
1 and an operating device 31 for operating the workbench 27 to pivot, and a leveling operating device 33 for operating the leveling cylinder 19 to extend and retract to correct the inclined workbench 27 to be in a hiding state. ing.

Next, the operation control device of the present invention will be described.
The operation control device 40 includes, as shown in FIG.
And a leveling operation device 33, an undulation angle sensor 15, a post angle sensor 23, an extension amount sensor 41, a turning angle sensor 43, and a controller 45. The operation device 31, the leveling operation device 33, the undulation angle sensor 15, and the post angle sensor 23 have been described above, and a description thereof will be omitted. The extension amount sensor 41 is attached to the telescopic boom 11 shown in FIG. 1 and has a function of detecting the extension amount of the telescopic boom 11. The turning angle sensor 43 has a function of detecting a turning angle of the worktable 27 with respect to the vertical post 17.

The controller 45 includes a memory 47, a correction circuit 49, a regulation determination circuit 51, an operation control circuit 53, and an operation regulation circuit 55. Here, FIG. 3 shows a front view of the aerial work vehicle 1 in a state where the workbench 27 is swiveled rearward of the vehicle body 3, and FIG. FIG. 3 is a plan view of the aerial work vehicle 1 in a state where the vehicle is turned. The memory 47 shown in FIG. 2 is a storage circuit, and the memory 47 has a telescopic boom 1 shown in FIG.
An allowable turning angle range θ2 required to prevent interference between the worktable 27 and the telescopic boom 11 due to the turning motion of the worktable 27 shown in FIG. The correction circuit 49 shown in FIG. 2 corrects the allowable turning angle range according to the undulating angle of the undulating angle sensor 15 according to the extension value of the extension amount sensor 41, and the telescopic boom 11 according to the corrected allowable turning angle range. Has a function of setting an allowable undulation angle range. The reason why the correction is performed according to the extension amount of the telescopic boom 11 is that the telescopic boom 11 is configured in a nested manner as shown in FIG. 1, and the thickness of the telescopic boom 11 changes according to the extension amount of the telescopic boom 11. Therefore, even if the undulation angle of the telescopic boom 11 is the same, the position at which the workbench 27 contacts the telescopic boom 11 changes due to the change in the extension amount of the telescopic boom 11. The regulation determination circuit 51 shown in FIG.
It is determined whether or not the turning angle value detected from Step 3 is outside the corrected allowable turning angle range.
It has a function of outputting a regulation signal for regulating the turning operation of the vehicle.

The operation control circuit 53 receives the work table swing motor 29, the up-and-down cylinder 15,
It controls the operation of the operation control valve V that controls the operations of the telescopic cylinder 13, the turning motor 10, and the leveling cylinder 19, and controls the operation of the warning light 40. The operation restriction circuit 55 cuts off transmission of an operation control signal for controlling the operation of the worktable swing motor 29 and the up-and-down cylinder 15 to the operation control valve V in accordance with the restriction signal from the restriction determination circuit 51. When the control signal has not been received from the circuit 51, the operation control signal output from the operation control circuit 53 is transmitted to the operation control valve V as it is.
The controller 45 is electrically connected to the warning light 35 and the operation control valve V.

Next, the operation of the operation control device 40 of the present invention will be described. First, after the aerial work vehicle 1 is moved to a position near the work site with the work table 27 stored on the vehicle body 3 shown in FIG.
Stable support. Then, a worker (not shown) gets on the workbench 27 via the vehicle body 3, and the worker manually operates the operation device 31 to turn and extend and retract the telescopic boom 11 as shown in FIG.
The workbench 27 is moved to the rear of the vehicle body 3 shown in FIG. Then, the operating table 31 is further operated to pivot the work table 27 and the telescopic boom 11 to fall down, so that the work table 27 is
Move to the desired work site shown in.

More specifically, the operation control device 40 is provided by the control device shown in FIG.
As shown in the figure, the up / down cylinder 15 and the swing motor 1 are controlled based on the up / down operation signal of the up / down cylinder 15 and the swing operation signal of the swing motor 10 sent by the operation of the operating device 31.
The operation of the operation control valve V connected to 0 is controlled. As a result, the telescopic boom 11 shown in FIG. 1 moves up and down and the turntable 9 turns, and the worktable 27 moves to the rear side of the vehicle body 3 as shown in FIG. Then, from this state, the workbench 2
7 and the telescopic boom 11 is turned down, and as shown in FIG. 4, the workbench 27 is turned at the position of the turning angle θ3. Here, as shown in FIG. 3, when the operating device 31 is operated in a state where the work table 27 is moved to a position on the rear side of the vehicle body 3, the elevation angle sensor 15, the extension amount sensor 41, and the turning angle shown in FIG. The detection value detected by the sensor 43 is sent to the controller 45.

Here, the undulation angle value detected by the undulation angle sensor 15 is sent to the operation control circuit 53, and the operation control circuit 53 reads the allowable turning angle range based on the undulation angle value from the memory 47, and reads this. The set allowable swing angle range is sent to the correction circuit 49. Then, a correction circuit 49 is provided based on the extension value of the telescopic boom 11 detected by the extension amount sensor 41.
Corrects the allowable turning angle range read from the memory 47. The corrected allowable swing angle range is determined by the regulation determination circuit 51.
And the regulation determination circuit 51 determines whether the turning angle θ3 detected by the turning angle sensor 43 exceeds the corrected allowable turning angle range.

The turning angle θ3 detected by the turning angle sensor 43
Is larger than the corrected allowable turning angle range, the regulation determination circuit 51 sends a regulation signal to the operation regulation circuit 55 and the operation control circuit 53. The operation restriction circuit 55 that has received the restriction signal, among the operation control signals sent from the operation control circuit 53, operates the operation control valve V of the turning operation control signal that causes the work table 27 to approach the telescopic boom 11 side.
Block transmission to In addition, at the position of the turning angle θ3, FIG.
When the operation of tilting the telescopic boom 11 shown in FIG. 2B is performed, the correction circuit 49 shown in FIG.
From the allowable swing angle range at the position 3, the allowable undulation angle range of the telescopic boom 11 is set, and the operation restriction circuit 55 transmits a tilt operation control signal to the operation control valve V of the telescopic boom 11 exceeding the allowable undulation angle range. Cut off. For this reason, the situation where the workbench 27 abuts on the telescopic boom 11 can be prevented beforehand. In addition, the operation control circuit 53 that has received the regulation signal turns on the warning light 35 to alert the worker about the possibility that the worktable 27 may come into contact with the telescopic boom 11.

In the allowable turning angle range θ2 shown in FIG.
When there is a protrusion 37 (for example, a pipe, a step, etc.) protruding outward on the side of the telescopic boom 11, the lower limit value of the allowable swing angle range θ2 on the side without the protruding material 37 and the extending direction of the telescopic boom 11 The angle θ4 and the upper limit of the allowable swing angle range θ2 differ from the angle θ5 between the extension direction of the telescopic boom 11 and have a relationship of θ5> θ4. That is, the allowable turning angle range θ2 is determined by the protrusion 3 of the telescopic boom 11.
7 can be set, the work table 27 can be swung to the vicinity of the side of the telescopic boom on the side without the protrusion 37 and on the side with the protrusion 37, and the entire work can be performed. Work efficiency can be improved.

The operation control circuit 53 is provided with the undulation angle sensor 1
The operation of the operation control valve V communicating with the leveling cylinder 19 shown in FIG. 2 is controlled so that the vertical post 17 shown in FIG. Therefore, the work table 7 shown in FIG. 1 is held in a horizontal state.

In the above embodiment, the allowable turning angle range is corrected by the correction circuit 49 shown in FIG. 2. However, the correction circuit 49 and the extension amount sensor 41 are omitted, and the undulation angle value from the undulation angle sensor 15 is omitted. Memory 4 stores the permissible swing angle range according to
7 and the read allowable swing angle range can be directly sent to the regulation determination circuit 51. Also in this case, the turning motion of the worktable 27 exceeding the allowable turning angle range can be restricted, and the contact of the worktable 27 with the telescopic boom 11 can be prevented.

Further, as shown in FIG.
5 is electrically connected to the post angle sensor 23, but the memory 47 may set an allowable turning angle range using the post angle detected by the post angle sensor 23 instead of the undulation angle value. it can. In this case, when the operation device 31 shown in FIG. 2 is operated, the detection values detected by the post angle sensor 23, the extension amount sensor 41, and the turning angle sensor 43 are sent to the controller 45. The post angle value detected by the post angle sensor 23 is sent to the operation control circuit 53, and the operation control circuit 53 reads out the allowable turning angle range from the memory 47 based on the post value. The signal is sent to the correction circuit 49. Then, based on the extension value of the telescopic boom 11 detected by the extension amount sensor 41, the correction circuit 49 corrects the read allowable swing angle range. The corrected allowable turning angle range is sent to the regulation determination circuit 51, and the restriction determining circuit 51 determines whether the turning angle value detected by the turning angle sensor 43 exceeds the corrected allowable turning angle range.

The turning angle sensor 4 is controlled by the regulation determining circuit 51.
If it is determined that the turning angle value of 3 is outside the corrected allowable turning angle range, the regulation determination circuit 55 sends a regulation signal to the operation regulation circuit 55 and the operation control circuit 53. The operation restriction circuit 55 that has received the restriction signal causes the workbench 27 of the operation control signals sent from the operation control circuit 53 to operate the telescopic boom 1.
The transmission of the turning operation control signal to approach the first side to the operation control valve V is cut off. For this reason, the workbench 27 is mounted on the telescopic boom 1.
1 can be prevented from occurring. In addition, the operation control circuit 53 which has received the regulation signal outputs the warning light 3
By turning on 5, it is possible to alert the worker to the possibility that the worktable 27 may come into contact with the telescopic boom 11. As described above, by monitoring the size of the post angle, it is possible to prevent the work table 27 from abutting on the telescopic boom 11 beforehand.

When the leveling operation device 33 is operated, an allowable turning angle range corresponding to the operation amount of the leveling operation device 33 can be set in the memory 47 shown in FIG. That is, in this case, the post angle is detected by the above-described post angle sensor 23, and an allowable turning angle range corresponding to the post angle is set in the memory 47. As described above, when the leveling operation device 33 is operated, by using the allowable swing angle range corresponding to the post angle, the swing operation of the workbench 27 exceeding the allowable swing angle range according to the post angle is performed. In addition, it is possible to restrict the tilting operation of the telescopic boom 11, and it is possible to prevent the work table 27 shown in FIG. 1 from abutting on the telescopic boom 11 beforehand.

[0036]

As described above, according to the operation control device for an aerial work vehicle of the present invention, the allowable turning angle range according to the boom up / down angle is set and detected by the set turning angle detecting means. When the turning angle exceeds the allowable turning angle range, the alarm means performs an alarm operation for the turning operation of bringing the work platform closer to the boom side, so that the allowable turning angle range according to the state of the boom can be applied. In addition, the work table can be pivoted to the vicinity of the boom without bringing the work table into contact with the boom, and the work efficiency of the entire work can be improved.

Further, the allowable turning angle range is corrected according to the extension amount detected by the boom extension amount detecting means, and the operation is performed when the turning angle detected by the turning angle detecting means exceeds the corrected allowable turning angle range. When an alarm is activated for the operation of approaching the base to the boom side, the allowable swing angle range that takes into account the boom extension and boom extension amount in addition to the boom up / down angle is set to allow the swivel according to the state of the boom. The angle range can be appropriately applied, the work table can be pivoted to the vicinity of the boom without bringing the work table into contact with the boom, and the work efficiency of the entire work can be further improved.

Further, when the turning angle detected by the turning angle detecting means exceeds the permissible turning angle range, the alarm means is provided.
If an alarm is issued to raise or lower the boom to bring the platform closer to the boom side, the boom may be tilted when the boom is tilted down while the platform swing angle exceeds the allowable swing angle range. There is a risk of approaching the boom by approaching the boom. In this case, an alarm is activated for the up and down movement of the boom that moves the workbench closer to the boom, thereby preventing the workbench from abutting on the boom. can do.

Further, there is provided a support angle detecting means provided on either the support means or the boom for detecting an angle formed between the support means and the boom, and the support angle detected by the support angle detecting means is replaced with an up / down angle. When the allowable turning angle range is set by using the support angle, the allowable turning angle range of the worktable changes according to the angle between the support means and the boom. Can be used to set the allowable turning angle range.

Further, when a leveling actuator for tilting the supporting means is provided, and the allowable turning angle range is variably set according to the tilting movement of the supporting means by the leveling actuator, the allowable turning angle according to the tilting state of the worktable is set. The range can be appropriately set, and interference with the boom of the workbench can be restricted by the leveling operation.

[Brief description of the drawings]

FIG. 1 is a front view of an aerial work vehicle equipped with an operation control device according to an embodiment of the present invention.

FIG. 2 is a block diagram of an operation control device according to an embodiment of the present invention.

FIG. 3 is a diagram for explaining an operation of the operation control device according to the embodiment of the present invention.

FIG. 4 is a diagram for explaining an operation of the operation control device according to the embodiment of the present invention.

FIG. 5 is a diagram for explaining an operation of the operation control device according to the embodiment of the present invention.

[Explanation of symbols]

Reference Signs List 1 aerial work platform 3 body 11 telescopic boom (boom) 17 vertical post (supporting means) 19 leveling cylinder (leveling actuator) 21 hoisting angle sensor (boom hoisting angle detecting means) 23 post angle sensor (supporting angle detecting means) 27 work Table 35 Warning light (warning means) 40 Operation control device 41 Extension sensor (boom extension detection means) 43 Swing angle sensor (swing angle detection means) 49 Correction circuit (warning means) 51 Regulation determination circuit (warning means) 55 Operation Regulation circuit (alarm means)

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3F333 AA08 AA15 AB01 AB04 AC02 AC08 BA12 BB08 BB23 BB26 BD02 BE02 CA15 CA21 FA03 FA11 FA22 FA36 FD08 FD09 FE04 FE09

Claims (5)

[Claims] 1. A boom provided on a vehicle body so as to be able to move up and down, a support means provided at a tip of the boom so as to be able to tilt back and forth in a vertical plane, and a support pivotally movable horizontally at a tip of the support means. An operation control device for an aerial work vehicle, comprising: a workbench provided with a swivel angle; a swivel angle detection unit configured to detect a swivel angle of the worktable; and a boom provided on the boom for detecting an up / down angle of the boom. Hoisting angle detecting means, and setting an allowable turning angle range necessary for preventing interference between the work table and the boom according to the hoisting angle detected by the boom hoisting angle detecting means, Alarm means for alarming a turning operation of bringing the work table closer to the boom side when the turning angle detected by the control means exceeds the allowable turning angle range. Motion control device. 2. The boom is configured to be extendable and retractable, and has boom extension amount detection means for detecting an extension amount of the boom, and the alarm means is adapted to detect an extension amount detected by the boom extension amount detection means. And correcting the allowable swing angle range in response to the operation of moving the workbench closer to the boom when the swing angle detected by the swing angle detection means exceeds the corrected allowable swing angle range. The operation control device for an aerial work vehicle according to claim 1, wherein the operation is performed. 3. The raising / lowering operation of the boom for bringing the work table closer to the boom side when the turning angle detected by the turning angle detecting means exceeds the allowable turning angle range. The operation control device for an aerial work vehicle according to claim 1 or 2, wherein an alarm operation is performed. 4. A supporting angle detecting means provided on any of said supporting means and said boom for detecting an angle between said supporting means and said boom, and a supporting angle detected by said supporting angle detecting means. The operation control device for an aerial work vehicle according to any one of claims 1 to 3, wherein the allowable turning angle range is set by using the following in place of the undulating angle. 5. The height according to claim 4, further comprising a leveling actuator for tilting the support means, wherein the allowable turning angle range is variably set in accordance with the tilting movement of the support means by the leveling actuator. Operation control device for work vehicles.