JP3801405B2 - Control equipment for aerial work platforms - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is configured such that an elevating device composed of, for example, a boom that can freely turn, undulate, and extend and retract, for example, is disposed on a travelable vehicle such as a truck vehicle, and the work table is moved up and down by this elevating device Related to an aerial work platform.
[0002]
[Prior art]
As such an aerial work vehicle, for example, the work table attached to the tip of the boom was moved to a desired height by turning, raising and lowering the boom constituting the lifting device, and boarded on the work table. What is comprised so that an operator may work at a high place is generally known. When working at a high place in this way, the overturning direction moment acting on the vehicle body from the work table and boom changes as the work table moves, so a plurality of jacks for supporting the vehicle are attached to the side of the vehicle. These jacks are grounded during high altitude work so that the vehicle body is stably supported. In general, this high-altitude work vehicle has a traveling wheel that is lifted from the ground when the vehicle is lifted and supported by a jack, so that the vehicle is stationary and cannot travel, and a boom (elevating device) is stored on the vehicle body. Only in such a state, the support by the jack is released (the jack is stored) so that the vehicle can be driven. In the present specification, such a case where the vehicle body is lifted and supported by the jack until the traveling wheel is lifted away from the ground is referred to as complete support.
[0003]
By the way, when inspecting / repairing overhead lines along the road, or when inspecting / repairing ceilings, side walls, etc. in tunnels, the vehicle must be stored without a boom and a jack as described above. However, there is a problem that the work efficiency is low. For this reason, there is an aerial work vehicle in which a rotatable roller is attached to the lower end of the jack, the roller is grounded to support the vehicle by the jack, and the wheel is also grounded to drive the vehicle by driving the wheel. Proposed. If such an aerial work vehicle is used, it is possible to move the jack on the road surface by rotating the roller while the roller is grounded and the vehicle is supported by the jack. It is possible to work by running the vehicle in a state where it is moved to, and the work efficiency is high. In the present specification, a support that enables a vehicle to travel by driving a wheel with a wheel grounded while the roller is grounded to support the vehicle by a jack is referred to as a travelable support.
[0004]
[Problems to be solved by the invention]
Here, if a jack is configured with a rotatable roller attached to the lower end so that the vehicle can be supported, if the jack is used to provide full support, the grounded roller may rotate and the vehicle may move. There is a problem that there is. In particular, when the vehicle is completely supported in a state where the vehicle is stopped on a sloping ground, there is a problem that the roller may move along the slope of the ground and the vehicle may move.
[0005]
The present invention has been made in view of such a problem, and provides a control device for an aerial work vehicle that can be supported and fully supported, and that can reliably support the vehicle in a stopped state even in complete support on an inclined ground or the like. The purpose is to provide.
[0006]
[Means for Solving the Problems]
In order to achieve such an object, in the present invention, an elevating device (for example, the swivel base 4 and the boom 5 in the embodiment) is disposed on a vehicle that has a wheel and can travel. It is possible to work at a high place by moving up and down, and furthermore, a plurality of jacks that support the vehicle are provided on the side of the vehicle, and rollers are arranged at the lower ends of the plurality of jacks so as to be rotatable in the traveling direction of the vehicle The aerial work vehicle is configured so that the roller is grounded to support the vehicle. In an aerial work vehicle having such a configuration, when the vehicle is supported by a jack, the support that can support the vehicle while the wheels are grounded and the full support that supports the vehicle when the wheels are lifted up are supported. The controller is configured to include a roller rotation regulating means for regulating the rotation of the roller and a jack operation control means for controlling the operation of the jack, and the rotation of the roller is regulated by the roller rotation regulating means. The jack operation control means permits the operation to the runnable support state and the full support state, but if the roller rotation restriction means is not regulated, the jack operation control means Only the operation is allowed and the operation to the fully supported state is restricted.
[0007]
If the control device for an aerial work vehicle having such a configuration is used, complete support cannot be performed unless the rotation of the roller is restricted by the roller rotation restricting means. In other words, full support is possible only when the rotation of the roller is restricted, and even if complete support is performed on an inclined ground, the roller does not rotate, and the vehicle is fully supported with the vehicle stopped and held securely. be able to.
[0008]
The roller rotation restricting means is constituted by a base member (for example, the dedicated jack base 50 in the embodiment) that is attached to the lower surface of the roller and is grounded and is held in a state where the roller is placed and is not rotated. Base attachment detection means for detecting attachment can be provided, and the jack operation control means can control the operation of the jack in response to a detection signal from the base attachment detection means. In this case, when it is detected by the base attachment detection means that the base member is attached to the lower surface of the roller, the jack operation control means permits the operation to the travelable support state and the complete support state, When the base attachment detection means detects that the base member is not attached to the lower surface of the roller, the jack operation control means allows only the operation up to the travelable support state and restricts the operation to the complete support state. To do.
[0009]
Further, the roller rotation restricting means is constituted by roller brake holding means (for example, the lock pin 50 or the brake device 55 in the embodiment) that locks and controls the rotation of the roller, and locks the roller by the roller brake holding means. Alternatively, a brake holding detection means (for example, the pin attachment detector 51 or the brake operation detector 56 in the embodiment) for detecting the braking operation is provided, and the jack operation control means receives the detection signal from the brake holding detection means and the jack operation control means operates the jack. It can also be configured to control. In this case, when the braking / holding detecting means detects that the rotation of the roller is restricted by the roller braking / holding means, the jack operation control means permits the operation to the travelable support state and the complete support state. When the braking / holding detecting means detects that the roller rotation is not restricted by the roller braking / holding means, the jack operation control means allows only the operation up to the travelable support state and shifts to the complete support state. Regulate the operation of
At this time, the roller brake holding means is composed of a lock pin that locks and holds the roller, and the brake holding detection means is from a pin attachment detector that detects insertion of the lock pin into a pin insertion hole formed in the roller. It may be configured. Further, the roller brake holding means may be constituted by a brake device that brakes the rotation of the roller, and the brake holding detection means may be constituted by a brake operation detector that detects the operation of the brake device.
[0010]
In this way, even when the base member is laid on the lower surface of the roller and the roller cannot be rotated and is fully supported with the roller held by the base member, the roller is held or braked by the roller brake holding means. Even when the roller is grounded and fully supported, the roller does not rotate. For this reason, in the present invention, complete support is allowed only in such a case, and complete support on an inclined land or the like can be performed while the vehicle is securely stopped.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. 2 to 6 show an aerial work vehicle equipped with a control device according to the present invention. This aerial work vehicle is configured based on a truck vehicle that has a driving cabin 1 and front and rear wheels 3a and 3b for traveling, and can travel by driving the rear wheels 3b.
[0012]
A turntable 4 that is driven by a turning motor (not shown) to be horizontally turnable is disposed on the vehicle body 2 of the vehicle, and a boom 5 that can be raised and lowered by a hoisting cylinder 6 is pivoted on the turntable 4. It is tied. The boom 5 is configured by nesting an intermediate boom 5b and a distal boom 5c in a base end boom 5a that is pivotally connected to the swivel base 5, and can be expanded and contracted by a built-in telescopic cylinder (not shown). Yes. A support member 7 is attached to the tip of the tip boom 5c so as to be swingable in the vertical direction, and a work table 9 is mounted on the support member 7 via a swinging device 8 so as to be able to turn horizontally (swing operation). It has been. In addition, a leveling device (not shown) is disposed between the tip boom 5c and the support member 7, and the work table 9 is always held horizontally by the leveling device regardless of whether the boom 5 is raised or lowered.
[0013]
An operator rides on the work table 9 to perform a work at a high place. At this time, an operation device 10 for operating the operator to move the work table 9 is provided on the work table 9. Is provided. For this reason, the operator who has boarded the work table 9 operates the operation lever 11 of the operation device 10 to perform the swivel operation of the swivel table 4, the hoisting and retracting operation of the boom 5, the swinging operation of the work table 9, and the like. By doing so, the work table 9 can be moved to a desired height to perform work at a height.
[0014]
In this way, it is difficult to stably support the vehicle body 2 only by the front and rear wheels 3a and 3b when working at a high place, so the outrigger jacks 15 are provided at the four front, rear, left and right portions of the vehicle body 2. Each of the outrigger jacks 15 is downwardly moved by an outer box 16 fixed to the beam post 13 of the outrigger beam 12 that can expand and contract in the vehicle width direction, and a jack cylinder (not shown) housed in the outer box 16. The inner box 17 is configured to be extendable and the roller 18 is attached to the lower end of the inner box 17 and is rotatable in the vehicle traveling direction. When working at a high place, the beam post 13 of the outrigger beam 12 is extended and the outrigger jack 15 is projected outward in the vehicle width direction as shown in FIG. 5, and the inner box 17 is extended downward by the jack cylinder. Then, the roller 18 is grounded as shown, and the vehicle body 2 is stably supported by the outrigger jack 15.
[0015]
As shown in FIGS. 2 and 3, the vehicle body 2 is supported by the outrigger jack 15 in a state where the roller 18 is grounded and the front and rear wheels 3a and 3b are also grounded (running support), and FIGS. As shown in FIG. 5, there is support (complete support) performed in a state where the front and rear wheels 3a and 3b are completely lifted. For this reason, each outrigger jack 15 is provided with a jack stroke sensor 22 for detecting the extension position of the inner post 17. Based on the detection value of this sensor, the expansion and contraction control of the jack cylinder is performed, and the running support is performed. Or do full support. However, when performing complete support, a dedicated jack base 50 is placed under the roller 18 to support (base support) to reduce the surface pressure against the road surface and to stably support the vehicle in a stationary state.
[0016]
As shown in FIG. 7, the dedicated jack base 50 is made of a rectangular plate-like member having a rectangular recess 52, and includes a handle 53 for carrying, and a mounting detection line 51 having a plug 51 a at the tip. Have The concave portion 52 is provided with tapered surfaces 52a on the front and rear sides, and when the roller 18 of the outrigger jack 15 is received in the concave portion 52, its rotation is prevented and held by the tapered surface 52a. Also, receiving plates 54a and 54b are provided on the left and right sides of the recess 52, and the lower ends of the roller support brackets 19 provided at the lower portion of the inner post 17 are brought into contact with and held by the receiving plates 54a and 54b.
[0017]
As shown in FIGS. 4 and 5, the plug 51 a at the tip of the attachment detection line 51 is inserted into the socket 2 a on the side of the vehicle body when the dedicated jack base 50 is supported on the lower side of the roller 18. ing. The socket 2a is provided with a base attachment detector 21 for detecting whether the plug 51a is inserted by electrical continuity or detecting the operation of a limit switch to detect whether the base is supported. Yes.
[0018]
When the vehicle body 2 is supported by the outrigger jack 15 as described above, the operation (the operation of projecting in the vehicle width direction by the outrigger beam 12 and the operation of projecting the inner post 17 downward by the jack cylinder) is as shown in FIG. The boom 5 is configured to be permitted only when it is stored on the vehicle body. For this reason, a boom storage detector 24 is provided for detecting whether or not the boom 5 is placed and stored on the boom receiver 3. In a state where the boom 5 is operated, that is, in a state where the work table 9 is moved from the storage position, the operation of the outrigger jack 15 is prohibited.
[0019]
In the aerial work vehicle configured as described above, the operation control when the vehicle body 2 is supported by the outrigger jack 15 will be described with reference to FIG. FIG. 1 shows the configuration of a control device that performs such operation control. First, the configuration of this device will be described. This device receives input signals from the base mounting detector 21, jack stroke sensor 22, jack operating device 23 and boom retract detector 24, and controls the operation of the jack actuator 31, alarm buzzer 32 and alarm indicator 33. A jack operation control device 30 is provided.
[0020]
The jack operation device 23 is provided, for example, at the rear end of the vehicle body 2 and is operated by an operator to perform the vehicle width direction expansion / contraction operation of the outrigger beam 12 and the expansion / contraction operation of the outrigger jack 15. Yes. As described above, the outrigger jack 15 can be selected by selecting the runnable support and the complete support. This setting is adjusted by adjusting the extension amount of the inner post 17, that is, the downward movement position of the roller 18. Done. For this reason, each outrigger jack 15 is provided with a jack stroke sensor 22 for detecting the extension amount of the inner post 17.
[0021]
As shown in FIGS. 4 and 5, the base attachment detector 21 detects whether or not the plug 51a of the attachment detection line 51 of the dedicated jack base 50 is inserted into the socket 2a on the side of the vehicle body, thereby supporting the base. It is detected whether it is in a state. The detection signal from the base mounting detector 21, the operation signal from the jack operation device 23, and the stroke detection signal from the jack stroke sensor 22 are sent to the jack operation control device 30 to control the operation of the jack actuator 29. The jack actuator 29 includes a beam cylinder that performs an extension operation in the vehicle width direction of the beam post 13 to which the outrigger jack 15 is fixed in the outrigger beam 12, and a jack cylinder that performs an expansion and contraction operation of the inner post 17. .
[0022]
Based on the operation of the jack operation device 23, the jack operation control device 30 causes the outrigger jack 15 to move in the vehicle width direction, or moves the roller 18 to the travelable support position or the complete support position. Thus, the vehicle is lifted and supported by the outrigger jack 15. However, this control is performed only when the boom storage detector 24 detects that the boom 5 is stored as shown in FIG. Even if the operation of the jack operation device 23 is performed in a state where the boom storage detector 24 detects that the boom 5 is not stored, the jack operation control device 30 does not operate the jack actuator 31 and the alarm buzzer. 32 is sounded or an alarm is displayed by the alarm indicator 33 to notify that the boom 5 is not stored.
[0023]
When the boom 5 is in the retracted state, the jack operation control device 30 operates the jack actuator 31 according to the operation of the jack operation device 23. However, at this time, it is determined based on the detection signal from the jack stroke sensor 22 whether the outrigger jack 15 is in the retracted state, in the travelable support state, or in the complete support state. At the same time, based on the detection signal from the base mounting detector 21, as shown in FIGS. 4 and 5, the dedicated jack base 50 is laid and supported under the roller 18, or the base support state is shown. It is determined whether or not the roller 18 is in a roller support state in which the roller 18 is directly grounded and supported as shown in FIG.
[0024]
When in the base support state, the jack operation control device 30 allows the operation of the jack actuator 31 by the operation of the jack operation device 23 as it is. For this reason, the outrigger jack 15 can be operated from the retracted state shown in FIG. 6 to the fully supported state shown in FIGS. 4 and 5 through the travelable support state shown in FIGS. 2 and 3, and the operation restriction is performed. Absent.
[0025]
On the other hand, when in the roller support state (that is, when the dedicated jack base 50 is not used), the jack operation control device 30 sets the outrigger jack 15 in accordance with the operation of the jack operation device 23 as shown in FIG. The operation of the jack actuator 31 that allows the inner post 17 of the outrigger jack 15 to extend downward beyond the travelable support state is allowed to operate from the retracted state shown in FIG. 2 and FIG. 3 to the travelable support state. To regulate. Therefore, even if the jack operating device 23 is operated to extend the inner post 17 downward when the outrigger jack 15 is in the travelable support state, the jack operation control device 30 restricts this to control the jack actuator 31. Do not operate. At the same time, the alarm buzzer 32 is sounded, or the alarm indicator 33 displays that the operation of extending the inner post 17 downward is being regulated.
[0026]
The operation in the case of performing an aerial work with the aerial work vehicle having the above configuration will be described. When working at a high place, the vehicle body 2 is first supported by the outrigger jack 15 in a state where the boom 5 and the like are stored on the vehicle body 2 as shown in FIG. When complete support is performed, the outrigger beam 12 is extended to the desired position in the vehicle width direction by the outrigger beam 12, and then the inner post 17 is extended downward and the roller 18 is grounded. At this time, the dedicated jack base 50 is placed under the roller 18 to reduce the surface pressure against the road surface and increase the support stability.
[0027]
In the state where the dedicated jack base 50 is attached as described above, the operation of the jack actuator 31 is allowed as it is with respect to the operation of the jack operating device 23. Therefore, the inner post 17 has the runnable support state shown in FIGS. After that, the front and rear wheels 3a, 3b are extended until they are completely separated from the road surface, so that they are fully supported as shown in FIGS. 4 and 5, and the vehicle body is completely supported by the outrigger jack 15.
[0028]
When performing the runnable support, the dedicated jack base 50 is not used and the roller 18 is directly grounded to the road surface. At this time, the extension of the inner post 17 is stopped in a state where the front and rear wheels 3a and 3b are grounded, and a travelable support state as shown in FIGS. 2 and 3 is obtained. In this state, the front and rear wheels 3a and 3b are also grounded (that is, the vehicle body side weight is distributed not only to the outrigger jack 15 but also to the front and rear wheels 3a and 3b). It is possible to make it. Even if the inner post 17 is further extended downward from this state, the operation of the jack actuator 31 is restricted as described above.
[0029]
A second embodiment of the control device according to the present invention will be described below. In the first embodiment described above, the complete support can be performed only when the dedicated jack base 50 is attached. However, even when the roller support is performed, the complete support is provided if the roller 18 cannot rotate. May be performed. For this reason, in this embodiment, as shown in FIG. 8, pin insertion holes 18a and 19a are formed in the roller 18 and the roller support bracket 19, respectively, and the lock pin 60 is inserted from the outside as shown in the figure. The rotation can be controlled by holding the lock.
[0030]
The roller support bracket 19 is provided with a pin attachment detector 61 for detecting the insertion attachment of the lock pin 60. In this embodiment, instead of the base attachment detector 21 in FIG. 1, a pin attachment detector 61 is used, and when it is detected that the lock pin 60 is inserted and the roller 18 is held locked, It is allowed to operate the outrigger jack 15 from the retracted state to the fully supported state beyond the travelable supported state. Conversely, when it is detected that the lock pin 60 is not attached and the roller 18 is in a rotatable state, the outrigger jack 15 is only allowed to operate from the retracted state to the travelable support state, It is restricted to operate beyond the runnable support state to the full support state.
[0031]
Further, as shown in FIG. 9, a brake device 65 that brakes the rotation of the roller 18 may be provided on the roller support bracket 19. Further, a brake operation detector 66 for detecting the operation of the brake device 65 is provided, and the brake operation detector 66 is used instead of the base attachment detector 21 in FIG. When the brake device 65 detects that the roller 18 is locked and held, the outrigger jack 15 is allowed to operate from the retracted state to the fully supported state beyond the runnable support state. Conversely, when it is detected that the brake device 65 is not operated and the roller 18 is in a rotatable state, the outrigger jack 15 is only allowed to operate from the retracted state to the travelable support state, It is restricted to operate beyond the runnable support state to the full support state.
[0032]
In the above, an aerial work vehicle with a relatively large work table attached to the tip of the boom is taken as an example, but the type of the aerial work vehicle is not limited to this, and various types of work vehicles can be applied. Is possible. Further, in the above example, the travelable support cannot be performed in a state where the outer post is projected outward in the vehicle width direction by the outrigger beam, and is configured to be allowed only when the outer post is stored in the vehicle width direction. Can do.
[0033]
【The invention's effect】
As described above, according to the present invention, when the rotation of the roller is restricted by the roller rotation restricting means, the jack operation control means allows the operation to the travelable support state and the complete support state. When the restriction by the rotation restricting means is not performed, the jack operation control means is configured to allow only the operation up to the travelable support state and restrict the operation to the complete support state. Therefore, complete support cannot be performed unless the rotation of the roller is restricted. That is, according to the control device of the present invention, complete support is possible only in a state where the rotation of the roller is restricted, and even if complete support is performed on an inclined ground, the roller does not rotate, and the vehicle is reliably It is possible to fully support the vehicle while it is stopped.
[0034]
When the roller rotation restricting means is composed of a base member and the base member is attached to the lower surface of the roller, the jack operation control means allows the operation up to the runnable support state and the fully supported state, and When the base member is not attached, the jack operation control means may be configured to allow only the operation up to the travelable support state and restrict the operation to the complete support state.
[0035]
The roller rotation restricting means is composed of a roller brake holding means that locks the roller or restricts the rotation of the roller. When the roller rotation is restricted by the roller brake holding means, the jack operation control means can travel. When the operation to the support state and the full support state is allowed and the rotation of the roller is not restricted by the roller braking and holding means, the jack operation control means only allows the operation to the runnable support state and the fully support state. You may comprise so that the action | operation to may be controlled.
[0036]
Even when the base member is laid on the lower surface of the roller as described above and the roller cannot be rotated and is fully supported with the roller held by the base member, the roller is held or braked by the roller brake holding means. Even when the roller is grounded and fully supported, the roller does not rotate. For this reason, in the present invention, complete support is allowed only in such a case, and complete support on an inclined ground or the like can be performed in a state where the vehicle is reliably stopped and held.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration example of a control apparatus for an aerial work vehicle according to the present invention.
FIG. 2 is a front view of an aerial work vehicle in an operation-supported state in which operation control is performed by the control device.
FIG. 3 is a side view of an aerial work vehicle in an operation-supported state in which operation control is performed by the control device.
FIG. 4 is a front view of an aerial work vehicle in which the operation control is performed by the control device and is in a fully supported state.
FIG. 5 is a side view of an aerial work vehicle that is fully supported by operation control by the control device.
FIG. 6 is a side view of an aerial work vehicle in a state in which a boom and an outrigger jack are stored.
FIG. 7 is a perspective view showing a dedicated jack base and an outrigger jack used at the lower end of the jack when the base is supported by the outrigger jack.
FIG. 8 is a partial cross-sectional front view showing a lower end portion of an outrigger jack that is locked and held by a lock pin so that rotation of a roller can be regulated.
FIG. 9 is a partial cross-sectional front view showing a lower end portion of an outrigger jack that is braked by a brake device and can control rotation of a roller.
[Explanation of symbols]
3a, 3b Front and rear wheels 4 Swivel table 5 Boom 9 Work table 15 Outrigger jack 16 Outer post 17 Inner post 18 Roller 50 Dedicated jack base 51 Mounting detection line 51a Plug 52 Recess 60 Lock pin 61 Pin mounting detector 65 Brake device 66 Brake Operation detector

Claims (5)

A vehicle having wheels and capable of traveling, an elevating device disposed on the vehicle, a work table attached to the elevating device and moved up and down by the elevating device, and disposed on a side portion of the vehicle A plurality of jacks that support the vehicle, and a roller is disposed at a lower end of each of the plurality of jacks so as to be rotatable in a traveling direction of the vehicle. A control device for an aerial work vehicle configured to support a vehicle,
When the vehicle is supported by the jack, it is possible to run support that supports the vehicle in a state where the wheel is grounded, and complete support that supports the vehicle in a state where the wheel is lifted,
Roller rotation regulating means for regulating rotation of the roller;
Jack operation control means for controlling the operation of the jack,
When the rotation of the roller is restricted by the roller rotation restricting means, the jack operation control means allows the operation to the travelable support state and the fully supported state, but the roller by the roller rotation restricting means When the rotation control is not performed, the jack operation control means allows only the operation up to the travelable support state and restricts the operation to the complete support state. Control device. The roller rotation restricting means comprises a base member that is attached to the lower surface of the roller and grounds and holds the roller in a state where it is not rotated.
And a base mounting detection means for detecting the mounting of the base member, and the jack operation control means controls the operation of the jack in response to a detection signal from the base mounting detection means,
When the base attachment detection means detects that the base member is attached to the lower surface of the roller, the jack operation control means allows the operation to the travelable support state and the full support state,
When it is detected by the base attachment detecting means that the base member is not attached to the lower surface of the roller, the jack operation control means allows only the operation up to the travelable support state and allows the fully supported state. The control device for an aerial work vehicle according to claim 1, wherein operation of the aerial work vehicle is regulated. The roller rotation restricting means comprises roller braking and holding means for holding the roller in a locked state or braking and restricting the rotation of the roller;
A brake holding detection means for detecting locking or braking operation of the roller by the roller brake holding means, and the jack operation control means for controlling the operation of the jack in response to a detection signal from the brake holding detection means;
When it is detected by the brake holding detection means that the rotation of the roller is restricted by the roller brake holding means, the jack operation control means performs the operation up to the travelable support state and the complete support state. Allow,
When the brake holding detecting means detects that the rotation of the roller is not regulated by the roller brake holding means, the jack operation control means allows only the operation up to the travelable support state, and 2. The control device for an aerial work vehicle according to claim 1, wherein operation to a fully supported state is restricted. The roller brake holding means is composed of a lock pin that locks and holds the roller, and the brake holding detection means detects the insertion and attachment of the lock pin to the pin insertion hole formed in the roller. The control apparatus for an aerial work vehicle according to claim 3, comprising: The roller brake holding means is constituted by a brake device for braking the rotation of the roller, and the brake holding detection means is constituted by a brake operation detector for detecting the operation of the brake device. 3. The control device for an aerial work vehicle according to 3.

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