Temporary support construction method and high-altitude work platform

Abstract

To provide a temporary support method capable of eliminating unnecessary work.SOLUTION: A first aerial work platform vehicle is provided with a remote control device 300, which is detachably mounted on a first work platform 40 and can be removed from the first work platform 40 so as to control boom operation for operating a first boom 30 even at a position apart from the first work platform 40. An operator gets on a second work platform 540 of a second aerial work platform vehicle and controls the boom operation of the remote control device 300 removed from the first work platform 40 in the second work platform 540 apart from the first work platform 40 so that the first boom 30 is operated to temporarily support an electric wire C by a temporary support device 100.SELECTED DRAWING: Figure 23

Description

[Technical field]

[0001] The present invention relates to a temporary support method for temporarily supporting an electric wire and a high-altitude work vehicle. [Background technology]

[0002] When performing work to rebuild utility poles or to replace insulators that support electric wires on utility poles, a temporary support method is adopted in which an aerial work vehicle is used to temporarily support the electric wires supported on the utility pole in place of the utility pole. Aerial work vehicles for temporarily supporting electric wires are known that are configured to include at least a boom that is attached to the vehicle body so as to be able to rise and fall, a work platform attached to the tip of the boom, and a temporary support device that is further attached to the tip of the boom (for example, see Patent Documents 1 and 2). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Publication number 5-47198 [Patent Document 2] Utility Model Registration No. 2508375 Summary of the Invention [Problem to be solved by the invention]

[0004] In such an aerial work vehicle, after a worker mounted on the work platform has performed the task of temporarily supporting an electric wire on the temporary support device, the worker is unable to move the work platform from its position while the temporary support device is temporarily supporting the electric wire, and is therefore unable to perform other tasks, resulting in a waste of work.

[0005] The present invention has been made in consideration of such problems, and has an object to provide a temporary support construction method and an aerial work vehicle that can eliminate wasteful work. [Means for solving the problem]

[0006] In order to achieve such an object, the present invention provides a temporary support method for temporarily supporting an electric wire by using a first aerial work vehicle including a first boom provided on a first travellable vehicle body so as to be operable at least including raising and lowering movement, a first work platform provided on the tip of the first boom, a first operation device for performing a boom operation operation to operate the first boom, and a temporary support device provided on the tip of the first boom and temporarily supporting an electric wire, and a second aerial work vehicle including a second boom provided on a second travellable vehicle body so as to be operable at least including raising and lowering movement, a second work platform provided on the tip of the second boom that can be boarded, and a second operation device (e.g., second upper operation device 545 in the embodiment) for performing a boom operation operation to operate the second boom, The second work platform includes a lower operating device that is attached to the body and performs a boom operating operation to operate the first boom, and a remote operating device that is detachably attached to the first work platform and can perform a boom operating operation to operate the first boom even when removed from the first work platform and is at a location away from the first work platform, and the operator operates the boom operating device of the lower operating device to operate the first boom to move the temporary support device to the vicinity of an electric wire located at a predetermined height, boards the second work platform, performs a boom operating operation of the second operating device attached to the second work platform, operates the second boom to move the second work platform to the vicinity of the first work platform, and at the second work platform, performs a boom operating operation of the remote operating device that has been removed from the first work platform, and operates the first boom to temporarily support the electric wire on the temporary support device.

[0007] In addition, the present invention In temporary support construction method teeth,The first aerial work vehicle includes an actuator (for example, the hoisting cylinder 23, the telescopic cylinder 31, and the swing motor 24 in the embodiment) that operates the first boom, and an operation control unit that controls the operation of the actuator so that, when the same boom operation operation as the boom operation operation of the lower operating device is performed by the remote operating device, the speed at which the first boom operates in response to the boom operation operation of the remote operating device is lower than the speed at which the first boom operates in response to the boom operation operation of the lower operating device. Prepare .

[0008] In addition, the aerial work vehicle of the present invention comprises a boom mounted on a movable vehicle body capable of operation including at least raising and lowering, a work platform provided at the tip of the boom and available for a user to ride on, a temporary support device provided at the tip of the boom for temporarily supporting an electric wire, a lower operating device provided on the vehicle body for performing boom operation operations to operate the boom, and a remote operating device that is detachably attached to the work platform and can be removed from the work platform and used to perform boom operation operations to operate the boom even when the remote operating device is located away from the work platform.

[0009] In addition, the present invention For high-altitude work vehicles teeth, an actuator for operating the boom (for example, the hoisting cylinder 23, the telescopic cylinder 31, and the swing motor 24 in the embodiment); and an operation control unit for controlling the operation of the actuator so that, when the same boom operation operation as that of the lower operating device is performed by the remote operating device, the speed at which the boom operates in response to the boom operation operation of the remote operating device is lower than the speed at which the boom operates in response to the boom operation operation of the lower operating device. Prepare . Effect of the Invention

[0010] According to the temporary support construction method of the present invention, the first operating device of the first aerial work vehicle includes a remote control device that is detachably attached to the first work platform and can perform boom operation for operating the first boom even when removed from the first work platform and at a position away from the first work platform. Then, a person boards the second work platform of the second aerial work vehicle, and at the second work platform away from the first work platform, performs boom operation of the remote control device removed from the first work platform to operate the first boom and temporarily support the electric wire on the temporary support device. This allows the work of temporarily supporting the electric wire on the temporary support device of the first aerial work vehicle to be performed without boarding the first work platform, making it possible to eliminate waste of work.

[0011] In the above-mentioned temporary support method, when the same boom operation as the boom operation operation of the lower operating device is performed by the remote control device, the operation control unit controls the operation of the actuator so that the speed at which the first boom operates in response to the boom operation operation of the remote control device is lower than the speed at which the first boom operates in response to the boom operation operation of the lower operating device. As a result, even if an erroneous operation is performed by the remote control device, the first boom operates at a relatively low speed, so that a phenomenon that reduces safety can be easily avoided and the safety of the work of temporarily supporting an electric wire on the temporary support device can be improved.

[0012] Furthermore, the aerial work platform of the present invention is provided with a remote control device that is detachably attached to the work platform and can operate the boom even when removed from the work platform and located at a distance from the work platform. This makes it possible, for example, to board another work platform of another aerial work platform of a different aerial work platform, operate the boom of the remote control device removed from the work platform at the other work platform away from the work platform, and operate the boom to temporarily support the electric wire on the temporary support device. In this way, the work of temporarily supporting the electric wire on the temporary support device can be performed without boarding the work platform, making it possible to eliminate wasteful work.

[0013] In the above-mentioned vehicle for working at height, when the same boom operation as that of the lower operating device is performed by the remote operating device, the operation control unit controls the speed at which the boom operates in response to the boom operation of the remote operating device to be faster than the speed at which the boom operates in response to the boom operation of the lower operating device. In this way, even if an erroneous operation is made in the remote control device, the boom operates at a relatively low speed, so that it is possible to easily avoid a phenomenon that reduces safety, and it is possible to improve the safety of the work of temporarily supporting the electric wire on the temporary support device. [Brief description of the drawings]

[0014] [Figure 1] FIG. 2 is a side view of the first aerial work vehicle according to the present embodiment. [Diagram 2] 1A and 1B are diagrams showing the work platform and lifting device of the first aerial work vehicle, in which (A) is a side view and (B) is a perspective view. [Diagram 3] FIG. 2 is a side view showing the temporary support device of the first aerial work vehicle. [Figure 4] FIG. 2 is a plan view showing an upper operating device provided on the work platform of the first aerial work vehicle. [Diagram 5] FIG. 2 is a rear view showing a lower operating device provided on the body of the first aerial work vehicle. [Figure 6] FIG. 2 is a perspective view showing a state in which a remote control device is attached to a workbench. [Figure 7] FIG. 2 is a perspective view showing a remote control device. [Figure 8] FIG. 2 is a plan view showing an operation box provided in the remote control device. [Figure 9] FIG. 4 is a functional block diagram of a safety device provided in the first vehicle for working at height. [Figure 10] FIG. 4 is a schematic diagram showing an example of the operating speed of a boom in the first vehicle for working at aerial height. [Figure 11] FIG. 4 is a schematic diagram showing an example of an allowable working range in the first aerial work vehicle. [Figure 12] FIG. 4 is a side view of the second aerial work vehicle according to the present embodiment. [Figure 13] 2 is a flowchart showing an overview of a temporary support construction method according to the present embodiment. [Figure 14] FIG. 2 is a diagram showing a state in which the work platform of the first aerial work vehicle is located near the ground. [Figure 15] FIG. 1 is a first view showing the temporary support device in the process of being assembled. [Figure 16] FIG. 2 is a second view showing the temporary support device in the process of being assembled. [Figure 17] FIG. 13 is a diagram showing a state in which the temporary support tool has been swung to a vertical position. [Figure 18] FIG. 13 is a diagram showing a state in which the temporary support tool is swung to an inclined position. [Figure 19] FIG. 2 is a diagram showing a state in which the work platform of the first aerial work vehicle is located near the ground together with the temporary support device. [Figure 20] FIG. 13 is a diagram showing a state in which the temporary support device has moved to the vicinity of the electric wire. [Figure 21] FIG. 13 is a diagram showing a state in which the work platform of the second aerial work vehicle has been moved near the work platform of the first aerial work vehicle. [Figure 22] 11 is a diagram showing a state in which the temporary support device is moved by operating the remote control device. FIG. [Figure 23] 13 is a diagram showing a state in which the temporary support device reaches an electric wire by operating the remote control device. FIG. [Figure 24] 11A and 11B are diagrams showing an operation of temporarily supporting an electric wire by the temporary support device. [Diagram 25] 13 is a diagram showing a state in which the temporary support device that temporarily supports the electric wire is moved by operating the remote control device. FIG. [Figure 26] FIG. 13 is a diagram showing a state in which the temporary support device temporarily supports the electric wire. [Figure 27] FIG. 13 is a diagram showing a state in which the platform of the second aerial work vehicle has been moved close to the platform of the first aerial work vehicle which is temporarily supporting the electric wires by the temporary support device. [Figure 28] 13 is a diagram showing a state in which an electric wire temporarily supported by a temporary support device by operating a remote control device reaches an electric pole. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. A first vehicle for working at height 1 according to this embodiment is shown in Fig. 1, and first, the overall configuration of the first vehicle for working at height 1 will be described with reference to this figure.

[0016] As shown in Fig. 1, the first vehicle for working at height 1 has a driver's cab 7 at the front of the vehicle body 2, and is constructed based on a truck vehicle that can run on a pair of front wheels 5f and rear wheels 5r arranged at the front and rear of the vehicle body 2. The vehicle body 2 is a chassis frame on which the front wheels 5f and rear wheels 5r are arranged. The vehicle is constructed with a body frame consisting of a chassis frame and a subframe attached to the chassis frame.

[0017] Jack devices are provided on the front, rear, left and right sides of the vehicle body 2 to lift and support the vehicle body 2 when working at height. The jack devices are configured with a pair of left and right front jacks 10f disposed behind the front wheels 5f, and a pair of left and right rear jacks 10r disposed behind the rear wheels 5r. Each jack 10f, 10r lifts and supports the vehicle body 2 by driving a jack cylinder 11 provided therein to extend downward, thereby stabilizing the entire vehicle. A lower operating device 27 is provided at the rear end of the vehicle body 2 to operate each jack 10f, 10r and a boom 30 (described later), etc.

[0018] A swivel base 20 is provided in the mounting area behind the driver's cab 7 of the vehicle body 2, and is configured to be horizontally rotatable about a vertical axis by being driven by a swivel motor 24. A base end of a boom 30 is attached to a support column 21 extending upward from the swivel base 20 via a foot pin 22 so as to be vertically swingable (raised and lowered). In addition, tool boxes 26 for storing work tools, work equipment, and the like are provided on the left and right sides of the mounting area of ​​the vehicle body 2.

[0019] The boom 30 has a configuration in which, from the swivel base 20 side, a base boom 30a, an intermediate boom 30b, and a tip boom 30c are nested together, and the boom 30 can be extended and retracted in the axial direction (longitudinal direction) by the extension and retraction of a telescopic cylinder 31 provided inside. In addition, a hoisting cylinder 23 is provided between the base boom 30a and the support 21, and by driving the hoisting cylinder 23 to extend and retract, the entire boom 30 can be raised and lowered in the up-down plane (vertical plane).

[0020] 2(A) and 2(B), a vertical post 32 is attached to the tip of the tip boom 30c by a swing pin 33 so as to be swingable up and down. The vertical post 32 is swing-controlled (leveling-controlled) by an upper leveling cylinder (not shown) straddling the tip of the tip boom 30c and a lower leveling cylinder 25 straddling between the base boom 30a and the support 21 so that the vertical position is always maintained regardless of the angle at which the boom 30 is raised and lowered.

[0021] A workbench bracket 38 is attached to the upper part of the vertical post 32 so as to be rotatable (horizontally rotatable) relative to the vertical post 32, and a box-shaped workbench 40 with an open top is attached to the side of the workbench bracket 38 via a workbench lifting device 36. The upper part of the vertical post 32 and the workbench bracket 38 are covered by a cover 35. A swivel motor 34 is provided inside the cover 35, and by driving the swivel motor 34, the workbench bracket 38 and the workbench 40 can be rotated horizontally (swivel operated) around the vertical post 32 via a rotation transmission mechanism consisting of a worm gear, a wheel gear, etc. (not shown).

[0022] As described above, the vertical post 32 is leveled and controlled so as to always maintain a vertical position, so that the floor surface of the work platform 40 is always kept horizontal regardless of the elevation angle of the boom 30. The work platform lifting device 36 is configured to have a lifting cylinder (not shown) and is configured to raise and lower the work platform 40 relative to the work platform bracket 38 by driving this lifting cylinder.

[0023] The work platform 40 is provided with an upper operation device 45 equipped with various operation means such as operation levers and switches to be operated by a worker on the work platform 40. Therefore, a worker on the work platform 40 can operate the upper operation device 45 to perform the following operations: rotating operation of the swivel base 20 (rotating operation of the swivel motor 24), raising and lowering operation of the boom 30 (extending and retracting operation of the hoisting cylinder 23), and extending and retracting operation of the boom 30. The telescopic cylinder 31 can be operated to extend or retract, and the work platform 40 can be swiveled (the swiveling motor 34 can be rotated).

[0024] The operating mechanism of the aerial work equipment, etc. (the above-mentioned swivel table 20, boom 30, work platform 40, etc.) provided on the vehicle body 2 is composed of a controller 200 (see Figure 9) that receives operation signals from the upper operation device 45 and the lower operation device 27 and controls the jack cylinder 11, swivel motor 24, telescopic cylinder 31, hoisting cylinder 23, oscillating motor 34, and lifting cylinder (not shown) of the work platform lifting device 36 (collectively referred to as "hydraulic actuators 55" below), a hydraulic unit 50 (see Figure 9) that supplies hydraulic oil to operate the above-mentioned hydraulic actuator 55, and an engine E of the vehicle body 2 (see Figure 9) for driving the aerial work equipment, etc.

[0025] 9, the hydraulic unit 50 is configured to include a hydraulic pump 51, a power take-off mechanism 52 for driving the hydraulic pump 51, and a control valve 53 for controlling the supply direction and supply amount of hydraulic oil supplied from the hydraulic pump 51 to each hydraulic actuator 55. The power take-off mechanism 52 is incorporated in a transmission (not shown) that changes the speed of the power of the engine E of the vehicle body 2 and transmits it to the rear wheels 5r. When a PTO operation lever (not shown) arranged in the driver's cab 7 is operated from the OFF position to the ON position, the power take-off mechanism 52 switches the drive destination of the engine E from the rear wheels 5r to the hydraulic pump 51, and the hydraulic pump 51 is driven using the power of the engine E. The control valve 53 controls the supply direction and amount of hydraulic oil supplied from the hydraulic pump 51 to each hydraulic actuator 55 in response to a control signal from the controller 200 (a control signal corresponding to the operation signals from the upper operating device 45 and the lower operating device 27), and controls the operating direction and operating speed of each hydraulic actuator 55 (controls the operating direction and operating speed of the jack device and the aerial work device).

[0026] Although detailed illustration is omitted, the hydraulic unit 50 is provided with a second hydraulic pump (not shown) driven by an electric motor (not shown). The electric motor is driven to rotate by electric power supplied from a mounted battery 59 via an inverter. The hydraulic unit 50 is configured to control the supply direction and supply amount of hydraulic oil supplied from the second hydraulic pump to each hydraulic actuator 55 in response to a control signal from the controller 200, instead of the (first) hydraulic pump 51 driven by the engine E of the vehicle body 2 and the power take-off mechanism 52, and to control the operation direction and operation speed of each hydraulic actuator 55.

[0027] 2(A), a lifting device 70 is provided on the upper end of the vertical post 32. The lifting device 70 is configured to include a rotating body 71 that is horizontally rotatably provided on the upper end of the vertical post 32, a sub-boom support member 72 that is attached to the upper part of the rotating body 71 so as to be swingable in the vertical direction, and a long sub-boom 74 that is detachably attached to the upper part of the sub-boom support member 72. For example, when the first aerial work vehicle 1 is moving, the sub-boom 74 is detached from the sub-boom support member 72 and attached to the base boom 30a as shown in FIG.

[0028] The rotating body 71 is composed of a rotating member 71a rotatably attached to the upper end of the vertical post 32, and a cover 71b that covers the periphery of the rotating member 71a. The rotating member 71a is provided so as to be rotatable coaxially with the rotation axis A of the work platform 40 (work platform bracket 38) by driving a winch rotation motor (not shown) provided inside. A swing pin 72a extending horizontally is provided on the upper part of the rotating member 71a, and a sub-boom support member 72 is attached so as to be swingable up and down around this swing pin 72a.

[0029] The sub-boom support member 72 is configured to be able to swing up and down about a swing pin 72a relative to the revolving member 71a by driving a sub-boom hoisting cylinder (not shown) provided inside the cover 71b of the revolving body 71. A sub-boom mounting hole (not shown) extending in a direction perpendicular to the swing pin 72a is formed in the upper part of the sub-boom support member 72, and the sub-boom 74 is inserted into this sub-boom mounting hole and fixed to the sub-boom support member 72 by a fixing pin 77. The length of the sub-boom 74 extending from the sub-boom support member 72 toward the work platform 40 in FIG. 2(A) can be adjusted by changing the insertion position of the fixing pin 77.

[0030] A winch mechanism 75 is provided at the upper end of the sub-boom support member 72, which pays out and winds up a winch rope (not shown) that is looped around a sheave member 74a (guide pulley) provided at the tip of the sub-boom 74. The winch mechanism 75 is configured to pay out and wind up the winch rope by driving a built-in winch drive motor (not shown).

[0031] As with the above-mentioned hydraulic actuator 55, the operation of the control valve 53 for the above-mentioned winch swing motor, sub-boom hoist cylinder, and winch drive motor (not shown) is controlled by the controller 200 which receives an operation signal from the upper operating device 45. This control valve 53 controls the supply direction and amount of hydraulic oil supplied from the hydraulic pump 51 (or the above-mentioned second hydraulic pump), thereby controlling the operating direction and operating speed of the winch swing motor, sub-boom hoist cylinder, and winch drive motor. Hereinafter, the hydraulic actuator 55 is taken to include the winch swing motor, sub-boom hoist cylinder, and winch drive motor.

[0032] Next, the temporary support device 100 according to this embodiment will be described with reference to Fig. 3. The temporary support device 100 includes the above-mentioned lifting device 70 and a temporary support tool 110 that is detachably attached to the lifting device 70.

[0033] The temporary support 110 is attached to the tip of the sub-boom 74 in place of the above-mentioned sheave member 74a. The temporary support 110 is configured to include a plurality of electric wire support parts 120 that temporarily support the electric wires installed between the utility poles, a support arm (temporary arm) 130 to which these electric wire support parts 120 are attached, a load detection part 140 that detects horizontal and vertical loads acting on the temporary support 110 from the installed electric wires, and a bracket 150 for attaching the load detection part 140 to the tip of the sub-boom 74.

[0034] The support arm 130 is made of a long, rod-like hollow member having a substantially square cross section, and three electric wire support parts 120 are attached at a predetermined interval in the longitudinal direction. The electric wire support part 120 is configured to have an attachment part 121 attached to the support arm 130 using a fastening bolt, a resin insulator member 122 fixed to the attachment part 121, and a support part 123 provided at the tip part of the insulator member 122. The support part 123 has four roller members 124 provided facing each other on the top, bottom, left and right sides, and is configured to support the electric wire by inserting it through a rectangular gap formed by these four roller members 124. In addition, the roller member 124 located at the upper part of the support part 123 can be swung open and closed, and by swinging the upper roller member 124 open, the electric wire can be inserted into the rectangular gap described above. Moreover, by closing the roller member 124 again after swinging open, the electric wire can be inserted and supported inside the rectangular gap described above. Moreover, a fixing member 131 for connecting the support arm 130 to the load detection unit 140 is attached to the support arm 130.

[0035] As shown in FIG. 9, the load detection unit 140 includes a horizontal load detector 141 and a vertical load detector 142. 42. The horizontal load detector 141 detects a horizontal load (horizontal load) acting on the temporary support 110. The vertical load detector 142 detects a vertical load (vertical load) acting on the temporary support 110. Each of the load detectors 141, 142 is composed of, for example, a load cell having a strain gauge, and outputs an electrical signal (detection signal) in which a change in electrical resistance caused by an external load is converted into a change in voltage.

[0036] The bracket 150 is configured to have a bracket base portion 151 that is detachably attached to the tip portion of the sub-boom 74, and a bracket connecting portion 155 that is swingably connected to the bracket base portion 151 and to which the load detection portion 140 is detachably attached. By swinging the bracket connecting portion 155, the temporary support 110 can be swingably displaced in the up and down direction between a parallel position (see FIG. 3) in which the support arm 130 is approximately parallel to the sub-boom 74, and a vertical position (see FIG. 17) in which the support arm 130 is approximately perpendicular to the sub-boom 74. A first fixing hole 156, a second fixing hole 157, and a third fixing hole 158 are formed on the side portion of the bracket connecting portion 155. A fixing pin 159 can be inserted into each of the fixing holes 156 to 158.

[0037] As shown in FIG. 3, when the temporary support 110 is swung to a parallel position, the first fixing hole 156 is aligned with a base-side fixing hole (not shown) formed on the side of the bracket base portion 151. The temporary support 110 is fixed in a parallel position by inserting a fixing pin 159 into the aligned first fixing hole 156 and the base-side fixing hole. As shown in FIG. 18, when the temporary support 110 is swung to a tilted position inclined with respect to the sub-boom 74, the second fixing hole 157 is aligned with a base-side fixing hole of the bracket base portion 151. The temporary support 110 is fixed in a tilted position by inserting a fixing pin 159 into the aligned second fixing hole 157 and the base-side fixing hole. As shown in FIG. 17, when the temporary support 110 is swung to a vertical position, the third fixing hole 158 is aligned with a base-side fixing hole of the bracket base portion 151. By inserting the fixing pin 159 through the aligned third fixing hole 158 and the base side fixing hole, the temporary support 110 is fixed in a vertical position.

[0038] Next, the upper operation device 45 according to this embodiment will be described with reference to Fig. 4. The upper operation device 45 includes a box-shaped operation box 45a attached to the work platform 40, a joystick JS, various operation levers LV1 to LV6, and various switches SW1 to SW11. Note that Fig. 4 shows a part of the upper part of the operation box 45a. On the side of the upper part of the operation box 45a close to the center of the work platform 40, there are provided, in order from the right side of Fig. 4, a joystick JS, a swing operation lever LV1, a winch operation lever LV2, a sub-boom swing operation lever LV3, a sub-boom rotation operation lever LV4, a lift operation lever LV5, and an attachment switching operation lever LV6.

[0039] The joystick JS is an operating device for rotating the rotating platform 20, raising and lowering the boom 30, and extending and retracting the boom 30. The swing operation lever LV1 is an operating lever for swinging the work platform 40. The winch operation lever LV2 is an operating lever for payout operation of the winch mechanism 75 and winding operation of the winch mechanism 75. The sub-boom swing operation lever LV3 is an operating lever for swinging the sub-boom 74. The sub-boom swing operation lever LV4 is an operating lever for swinging the swing member 71a. The lifting operation lever LV5 is an operating lever for lifting and lowering the work platform 40. The attachment switching operation lever LV6 is an operating lever for switching between various attachments (not shown).

[0040] At the upper part of the operation box 45a near the outer periphery of the workbench 40, there are, in order from the right side in FIG. 4, an operation stop switch SW1, a power switch SW2, and a drive changeover switch SW3. 4, an engine switch SW4, an accelerator switch SW5, an automatic storage switch SW6, a horizontal / vertical operation switch SW7, an interference prevention function release switch SW8, and a mode changeover switch SW9. In addition, provided in the upper portion of the operation box 45a between the joystick JS and the power switch SW2 and the drive changeover switch SW3 are, in this order from the right side of FIG. 4, a lighting switch SW10 and a battery check switch SW11.

[0041] The operation stop switch SW1 is an operation switch for stopping the operation of the aerial work equipment (swivel platform 20, boom 30, work platform 40, etc.). The operation stop switch SW1 is configured using a push-pull button switch or the like, and is configured to stop the operation of the aerial work equipment by pushing it, and to release the stopped state of the operation of the aerial work equipment by pulling it. An operation stop lamp LP1 is provided between the operation stop switch SW1 and the power switch SW2 on the top of the operation box 45a. When the operation of the aerial work equipment is stopped by pushing the operation stop switch SW1, the operation stop lamp LP1 is turned on.

[0042] The power switch SW2 is an operation switch for turning on / off the power supply of the upper operating device 45. The drive changeover switch SW3 is an operation switch for switching the hydraulic pump that supplies hydraulic oil between a (first) hydraulic pump 51 driven by the engine E and power take-off mechanism 52 of the vehicle body 2 and a second hydraulic pump (not shown) driven by an electric motor (not shown). The engine switch SW4 is an operation switch for starting or stopping the engine E. The accelerator switch SW5 is an operation switch for switching between an automatic mode in which the rotation speed of the engine E is automatically controlled between high and low, and a low-speed mode in which the rotation speed of the engine E is controlled to a constant low-speed rotation speed.

[0043] The automatic storage switch SW6 is an operation switch for making the controller 200 perform automatic storage control for storing the boom 30 in a predetermined storage position on the vehicle body 2. The horizontal / vertical operation switch SW7 is an operation switch for making the controller 200 perform horizontal / vertical operation control for linearly moving the work platform 40 in the horizontal or vertical direction. The interference prevention function release switch SW8 is an operation switch for temporarily releasing the interference prevention function. The interference prevention function is a function for setting an interference prevention restriction area in which the movement of the work platform 40 is restricted to prevent contact with an obstacle or the like. The power switch SW2, the drive changeover switch SW3, the engine switch SW4, the accelerator switch SW5, the automatic storage switch SW6, the horizontal / vertical operation switch SW7, and the interference prevention function release switch SW8 are configured using toggle switches or the like.

[0044] The mode changeover switch SW9 is an operation switch for switching between a high altitude mode and a temporary support mode. The mode changeover switch SW9 is configured using a toggle switch or the like, and can be switched from the high altitude mode to the temporary support mode, the high altitude mode, the temporary support mode, and so on, by a push operation. The high altitude mode is a control mode in which work at high altitudes and the like can be performed. The temporary support mode is a control mode in which the electric wire can be temporarily supported using the temporary support device 100.

[0045] In addition, by pressing and holding the mode selector switch SW9 in the temporary support mode, the mode can be switched from the temporary support mode to the pre-use inspection mode. In addition, by pressing and holding the mode selector switch SW9 in the pre-use inspection mode, the mode can be switched from the pre-use inspection mode to the temporary support mode. The pre-use inspection mode is a control mode for performing a pre-use inspection in the temporary support mode. Note that the mode selector switch SW9 is not limited to a toggle switch, and may be configured using a push button switch, a rotary switch, or the like.

[0046] The lighting switch SW10 is an operation switch for turning on / off a lighting lamp (not shown) that illuminates the upper part of the upper operation device 45. The battery check switch SW11 is an operation switch for turning on / off a battery check lamp LP2. The lighting switch SW10 and the battery check switch SW11 are configured using toggle switches or the like. The battery check lamp LP2 is provided on the side (left side in FIG. 4) of the battery check switch SW11 on the upper part of the operation box 45a. The battery check lamp LP2 is turned on and off in two stages to indicate the remaining capacity of the upper battery (not shown) provided on the workbench 40 by turning on the battery check switch SW11. In addition, a load rate indicator lamp LP3, a battery unit remaining capacity indicator lamp LP4, a winding mode indicator lamp LP5, and a temporary support mode indicator lamp LP6 are provided on the side (left side in FIG. 4) of the battery check switch SW11 on the upper part of the operation box 45a alongside the battery check lamp LP2.

[0047] When the mode selector switch SW9 is pressed to switch from the high-altitude mode to the temporary support mode, the temporary support mode indicator lamp LP6 lights up. When the mode selector switch SW9 is pressed to switch from the temporary support mode to the high-altitude mode, the temporary support mode indicator lamp LP6 goes out. When the mode selector switch SW9 is pressed and held to switch from the temporary support mode to the pre-use inspection mode, the temporary support mode indicator lamp LP6 flashes.

[0048] Next, the lower operating device 27 according to this embodiment will be described with reference to Fig. 5. The lower operating device 27 is configured to have a box-shaped operation box 27a attached to the rear end of the vehicle body 2, a monitor (display) MT, and various switches SW21 to SW31. Note that Fig. 5 shows a part of the rear of the operation box 27a. A monitor MT is provided at the center of the rear of the lower operating device 27. The monitor MT is configured to display the operating state of the boom 30, the installation state of each of the jacks 10f, 10r, etc.

[0049] On the left rear side of the operation box 27a, there are provided, in order from the left, a telescopic switch SW21, a swivel switch SW22, and a hoist switch SW23. The telescopic switch SW21 is an operation switch for performing the telescopic operation of the boom 30. The swivel switch SW22 is an operation switch for performing the swivel operation of the swivel base 20. The hoist switch SW23 is an operation switch for performing the hoist operation of the boom 30.

[0050] On the left side of the rear of the operation box 27a, below the telescopic switch SW21, the swivel switch SW22, and the elevation switch SW23, there are provided, in order from the left, a lower priority switch SW24, an automatic storage switch SW25, and a display switching / pre-work inspection switch SW26. The lower priority switch SW24 is an operation switch for prioritizing the operation of the lower operation device 27 over the operation of the upper operation device 45 (disabling the upper operation device 45 and enabling the lower operation device 27). The automatic storage switch SW25 is an operation switch for causing the controller 200 to perform the automatic storage control described above. The display switching / pre-work inspection switch SW26 is an operation switch for switching between a display switching mode for switching the display on the monitor MT and a pre-work inspection mode for carrying out a pre-work inspection of each sensor, control valve 53, controller 200, etc.

[0051] On the right rear part of the operation box 27a, there are provided, in order from the left, an accelerator switch SW27, an engine switch SW28, and a battery switch SW29. The accelerator switch SW27 is an operation switch for switching between an automatic mode in which the rotation speed of the engine E is automatically controlled between high and low, and a low-speed mode in which the rotation speed of the engine E is controlled to a constant low-speed rotation speed. The engine switch SW28 is an operation switch for starting or stopping the engine E. The battery switch SW29 is an operation switch for switching the battery unit (body battery 59) between a driving mode and a stop / charge mode.

[0052] On the right side of the rear of the operation box 27a, below the accelerator switch SW27, the engine switch SW28, and the battery switch SW29, there are provided, in this order from the left, a normal charging switch SW30 and an equalizing charging switch SW31. The normal charging switch SW30 is an operation switch for turning on / off the normal charging mode of the battery unit (mounted battery 59). The equalizing charging switch SW31 is an operation switch for turning on / off the equalizing charging mode of the battery unit (mounted battery 59). The various switches SW21 to SW31 are configured using toggle switches or the like.

[0053] 6, a remote control device 300 is detachably attached to the upper edge of the work platform 40 of the first aerial work vehicle 1. By removing the remote control device 300 from the work platform 40 and operating it, an operator can perform each operation of the swivel operation of the swivel platform 20 (rotation operation of the swivel motor 24), the hoisting operation of the boom 30 (extension and retraction of the hoisting cylinder 23), and the telescopic operation of the boom 30 (extension and retraction of the telescopic cylinder 31) even at a location away from the work platform 40 (hereinafter, these three operation operations may be collectively referred to as "boom operation operations"). The controller 200 receives operation signals from the remote control device 300 and controls the operation of the swivel motor 24, the telescopic cylinder 31, and the hoisting cylinder 23. The control valve 53 controls the supply direction and amount of hydraulic oil supplied from the hydraulic pump 51 (or the second hydraulic pump described above) to the swing motor 24, the telescopic cylinder 31, and the hoisting cylinder 23 in response to a control signal from the controller 200 (a control signal in response to an operation signal from the remote operation device 300), and controls the operation direction and operation speed of the swing motor 24, the telescopic cylinder 31, and the hoisting cylinder 23 (controls the operation direction and operation speed of the boom 30).

[0054] Next, the remote control device 300 according to this embodiment will be described with additional reference to FIG. 7 and FIG. 8. The remote control device 300 includes a box-shaped operation box 310, various switches SW41 to SW46, a mounting member 320 that can be attached to the upper edge of the workbench 40 by being coupled with the operation box 310, and a protection member 330 that protects the side of the operation box 310. The remote control device 300 is electrically connected to the controller 200 and the like via a cable 301. One end of the cable 301 is electrically connected to the operation box 310, and the other end of the cable 301 is electrically connected to an input / output port (not shown) provided on the upper operation device 45 of the workbench 40. The length of the cable 301 is set to a length that allows the remote control device 300 removed from the upper edge of the workbench 40 to be moved to a position away from the workbench 40 (outside the workbench 40).

[0055] A power switch SW41 and an operation stop switch SW42 are provided on the upper part of the operation box 310 on the side farther from the protective member 330, in this order from the left in FIG. 8. The power switch SW41 is an operation switch for turning on / off the power of the remote operation device 300. The power switch SW41 is configured using a toggle switch or the like. A power lamp LP41 is provided near the power switch SW41 on the upper part of the operation box 310. When the power of the remote operation device 300 is turned on by operating the power switch SW41, the power lamp LP41 is configured to light up.

[0056] The operation stop switch SW42 is an operation switch for stopping the operation of the aerial work equipment (swivel platform 20, boom 30, work platform 40, etc.). The operation stop switch SW42 is configured using a push-pull type button switch or the like, and is configured to stop the operation of the aerial work equipment by pushing it, and to release the stopped state of the operation of the aerial work equipment by pulling it. An operation stop lamp LP42 is provided near the operation stop switch SW42 on the top of the operation box 310. When the operation stop switch SW42 is pushed, When the operation of the high altitude work equipment, etc. is stopped, the operation stop lamp LP42 is turned on. In addition, a load factor display lamp LP43 is provided in a portion between the power switch SW41 and the operation stop switch SW42 on the upper part of the operation box 310.

[0057] On the upper part of the operation box 310, on the side closer to the protective member 330, there are provided, in this order from the left in Fig. 8, a boom operation switch SW43, a telescopic switch SW44, a swivel switch SW45, and a boom hoist switch SW46. The boom operation switch SW43 is an operation switch for enabling the operation of the telescopic switch SW44, the swivel switch SW45, and the boom hoist switch SW46. The telescopic switch SW44 is an operation switch for performing the telescopic operation of the boom 30. The swivel switch SW45 is an operation switch for performing the swivel operation of the swivel base 20. The boom hoist switch SW46 is an operation switch for performing the boom hoist operation of the boom 30. The boom operation switch SW43, the telescopic switch SW44, the swivel switch SW45, and the boom hoist switch SW46 are configured using toggle switches or the like.

[0058] As shown in FIG. 7, the mounting member 320 is formed into the illustrated shape by cutting, bending, or the like using a metal plate material. The mounting member 320 has a connecting portion 321 formed in the middle of the mounting member 320, a locking portion 322 formed in the upper portion of the mounting member 320, and an abutting portion 323 formed in the lower portion of the mounting member 320. The connecting portion 321 is formed in a plate shape that matches the outer peripheral shape of the operation box 310, and is connected to the lower portion of the operation box 310 using a connecting member (not shown) such as a screw. The locking portion 322 is formed in a gate-shaped cross-sectional shape that matches the shape of the upper edge of the work table 40, and is configured to be able to be locked to the upper edge of the work table 40. The abutting portion 323 is formed in a rib shape extending in a substantially horizontal direction, and is configured to abut against the inner side surface of the work table 40 when the locking portion 322 is locked to the upper edge of the work table 40. With the locking portion 322 locking onto the upper edge of the workbench 40 and the abutment portion 323 abutting the inner surface of the workbench 40, the mounting member 320 connected to the operation box 310, i.e., the remote control device 300, is removably attached to the upper edge of the workbench 40.

[0059] 7, the protective member 330 is formed into the illustrated shape by cutting, bending, etc. using a metal bar. The protective member 330 is joined to the vicinity of the joint 321 of the mounting member 320 by welding, etc. In this way, the protective member 330 is disposed near the side of the operation box 310, and protects the side of the operation box 310 from contact with other members.

[0060] Next, a safety device (anti-tipover device) provided on the first vehicle for working at height 1 will be described with reference to Fig. 9 to Fig. 11. The safety device according to this embodiment is configured to include various sensors and a controller 200, as shown in Fig. 9.

[0061] 9, the sensors include a boom hoisting angle detector 251, a boom length detector 252, a boom rotation angle detector 253, an axial force detector 254, a winch rotation angle detector 255, a jack extension detector 256, and the horizontal load detector 141 and vertical load detector 142 of the load detection unit 140. These detectors are electrically connected to the controller 200, and the detection information (detection signals) of each of the detectors 141, 142, 251-256 are input to the controller 200.

[0062] The boom hoisting angle detector 251 is provided at the base end of the boom 30 and detects the hoisting angle of the boom 30. The boom length detector 252 is provided inside the boom 30 and detects the length (amount of expansion and contraction) of the boom 30. The boom rotation angle detector 253 is provided on the vehicle body 2 and detects the rotation angle of the boom 30 (swivel base 20). The axial force detector 254 is provided at the upper end of the hoisting cylinder 23 and detects the axial force (axial load) acting on the hoisting cylinder 23. The winch rotation angle detector 255 is provided on the vertical post 32 and detects the rotation angle of the vertical post 32 (boom 3 The jack extension detector 256 is provided on the vehicle body 2 and detects the extension of the jacks 10f, 10r.

[0063] The controller 200 has an operation control section 201, a moment calculation section 202, a position calculation section 203, a boom operation regulating section 204, a mode determination section 205, and an abnormality determination section 206. Each section 201 to 206 of the controller 200 is a functional representation of hardware such as a CPU, a ROM, a RAM, and electronic circuits provided in the controller 200, and software such as a control program.

[0064] The operation control unit 201 electromagnetically drives the control valve 53 to operate each hydraulic actuator 55 based on an operation signal from the upper operating device 45, the lower operating device 27, or the remote operating device 300, thereby controlling the operation of the jacks 10f, 10r, the boom 30, the work platform 40, the sub-boom 74, the winch mechanism 75, etc. When the same boom operating operation as the boom operating operation of the lower operating device 27 is performed by the remote operating device 300, the operation control unit 201 controls the telescopic operation of the hoisting cylinder 23, the telescopic operation of the telescopic cylinder 31, and the rotation operation of the swing motor 24 so that the speed at which the boom 30 rises, falls, retracts, and swings in response to the boom operating operation of the remote operating device 300 is lower than the speed at which the boom 30 rises, falls, retracts, and swings in response to the boom operating operation of the lower operating device 27.

[0065] FIG. 10 shows a comparative example of the operating speed of the boom 30 in the first aerial work platform 1. The operating speed of the boom 30 is a general term for the speed at which the boom 30 rises, retracts, and swings. The vertical axis of the graph in FIG. 10 indicates the height of the work platform 40 (bottom), and the horizontal axis of the graph in FIG. 10 indicates the operating speed of the boom 30. The operating speed B1 of the boom 30 in response to the boom operating operation of the lower operating device 27 (and the operating speed of the boom 30 in response to the boom operating operation of the upper operating device 45 in the high altitude mode) is constant regardless of the height of the work platform 40. The operating speed B2 of the boom 30 in response to the boom operating operation of the remote operating device 300 is constant regardless of the height of the work platform 40, but is lower than the operating speed B1 of the boom 30 in response to the boom operating operation of the lower operating device 27 (and the operating speed of the boom 30 in response to the boom operating operation of the upper operating device 45 in the high altitude mode). In addition, the operating speed B3 of the boom 30 in response to the boom operating operation of the upper operating device 45 in the temporary support mode is lower when the height of the work platform 40 is large than when the height of the work platform 40 is small. The operating speed B2 of the boom 30 in response to the boom operating operation of the remote control device 300 is lower than the operating speed B3 of the boom 30 in response to the boom operating operation of the upper operating device 45 in the temporary support mode.

[0066] The moment calculation unit 202 calculates the moment acting around the foot pin 22 of the boom 30 (around the hoisting axis) based on detection information such as the axial force of the hoisting cylinder 23 detected by the axial force detector 254 and the hoisting angle of the boom 30 detected by the boom hoist angle detector 251. This moment is obtained by converting the axial force acting on the hoisting cylinder 23 into a moment acting around the foot pin 22. In other words, this moment is calculated based on the axial force acting on the hoisting cylinder 23, i.e., the weight of the boom 30, the work platform 40, etc., the live load on the work platform 40, the lifting load when the lifting device 70 is used, the external load when the temporary support device 100 is used, etc. In addition, the moment calculation unit 202 is capable of calculating a moment corrected for the influence of an external load when the temporary support device 100 is used, based on detection information such as the horizontal load acting on the temporary support device 110 detected by the horizontal load detector 141, the vertical load acting on the temporary support device 110 detected by the vertical load detector 142, and the rotation angle of the sub-boom 74 detected by the winch rotation angle detector 255.

[0067] The position calculation unit 203 calculates the position of the boom 30 detected by the boom hoisting angle detector 251. Based on detection information such as the angle, the length of the boom 30 detected by the boom length detector 252, and the rotation angle of the boom 30 detected by the boom rotation angle detector 253, the position of the bottom of the work platform 40 (or the tip of the boom 30) relative to the vehicle body 2 is calculated.

[0068] The boom operation restricting unit 204 compares the moment calculated by the moment calculating unit 202 with a preset restricting moment. When the moment calculated by the moment calculating unit 202 reaches the restricting moment, the boom operation restricting unit 204 restricts, among the operations of the boom 30, operations in a direction that increases the overturning moment acting on the boom 30 (downturning movement, extension movement, and rotation movement in a predetermined direction), regardless of the operation signals from the respective operating devices 27, 45, 300. The restricting moment is set according to the rotation angle of the boom 30, the extension amount of the jacks 10f, 10r, etc.

[0069] When a switching operation signal for switching to the temporary support mode is input from the mode switching switch SW9 of the upper operation device 45, the boom operation regulating unit 204 compares the position of the work platform 40 (bottom) calculated by the position calculation unit 203 with a preset allowable work range until the horizontal load and the vertical load detected by the horizontal load detector 141 and the vertical load detector 142 of the load detection unit 140 change beyond a predetermined change amount. When the position of the work platform 40 calculated by the position calculation unit 203 reaches the outer edge of the allowable work range, the boom operation regulating unit 204 regulates the operation of the boom 30 in the direction in which the work platform 40 moves outside the allowable work range, regardless of the operation signal from each operation device 27, 45, 300. The predetermined change amount of the horizontal load and the vertical load is, for example, the change amount of the horizontal load and the vertical load acting on the temporary support 110 when temporarily supporting the electric wire.

[0070] Fig. 11 shows an example of the allowable working range S in a vertical plane. In Fig. 11, the vertical axis of the graph showing the allowable working range S indicates the height of the work platform 40 (bottom), and the horizontal axis of the graph showing the allowable working range S indicates the working radius centered on the rotation center C of the boom 30 (rotating base 20). The allowable working range S is set according to the extension amount of the jacks 10f, 10r, etc.

[0071] When a switching operation signal for switching to the temporary support mode is input from the mode switching switch SW9 of the upper operation device 45, the mode determination unit 205 determines whether or not detection signals are input from the horizontal load detector 141 and the vertical load detector 142 of the load detection unit 140, the extension amounts of the jacks 10f, 10r detected by the jack extension amount detector 256 are greater than a preset restricted extension amount, and the position of the work platform 40 (bottom) calculated by the position calculation unit 203 is within a preset allowable work range behind the vehicle body 2. When the determination is YES, the mode determination unit 205 outputs a normal notification signal to the upper operation device 45. If the judgment is NO, that is, in the temporary support mode, when no detection signals are input from the horizontal load detector 141 and the vertical load detector 142, or the extension amount of the jacks 10f, 10r is less than the regulated extension amount, or the work platform 40 is located outside the allowable working range, the mode judgment unit 205 outputs an abnormality warning signal to the upper operating device 45 and outputs an operation stop signal to the operation control unit 201 to stop the operation of each hydraulic actuator 55.

[0072] When a switching operation signal for switching to the pre-use inspection mode is input from the mode switching switch SW9 of the upper operation device 45, the abnormality determination unit 206 determines whether or not the horizontal load and vertical load detected by the horizontal load detector 141 and the vertical load detector 142 change due to the swinging displacement of the temporary support 110, based on the detection signals input from the horizontal load detector 141 and the vertical load detector 142 of the load detection unit 140. If the determination is YES, the abnormality determination unit 206 outputs a normal notification signal to the upper operation device 45. If the determination is NO, that is, if the horizontal load and vertical load detected by the horizontal load detector 141 and the vertical load detector 142 do not change in the pre-use inspection mode, the abnormality determination unit 206 determines whether or not an abnormality has occurred. A constant notification signal is output to the upper operating device 45. Furthermore, the abnormality determination unit 206 may output an operation stop signal to the operation control unit 201 to stop the operation of each hydraulic actuator 55.

[0073] Next, a second vehicle for working at height 501 according to this embodiment will be described with reference to Fig. 12. Similar to the first vehicle for working at height 1, the second vehicle for working at height 501 has a driver's cab 507 at the front of the vehicle body 502, and is configured based on a truck vehicle capable of traveling using a pair of left and right front wheels 505f and rear wheels 505r disposed at the front and rear of the vehicle body 502.

[0074] Jack devices are provided on the front, rear, left and right sides of the vehicle body 502 to lift and support the vehicle body 502 during high-altitude work. The jack devices are configured to have a pair of left and right front jacks 510f and a pair of left and right rear jacks 510r, similar to the first vehicle for high-altitude work 1. Each jack 510f, 510r lifts and supports the vehicle body 502 by driving a jack cylinder 511 provided therein to extend downward, thereby stabilizing the entire vehicle. A lower operating device 527 is provided at the rear end of the vehicle body 502 to operate the jacks 510f, 510r, the boom 530, etc., similar to the first vehicle for high-altitude work 1.

[0075] A swivel base 520 is provided in the mounting area behind the driver's cab 507 of the vehicle body 502, and is configured to be horizontally rotatable about a vertical axis by being driven by a swivel motor 524. A base end of a boom 530 is attached to a support column 521 extending upward from the swivel base 520 via a foot pin 522 so as to be vertically swingable (raised and lowered). In addition, tool boxes 526 for storing work tools and equipment are provided on the left and right sides of the mounting area of ​​the vehicle body 502.

[0076] The boom 530 has a configuration in which, from the swivel base 520 side, a base end boom 530a, an intermediate boom 530b, and a tip end boom 530c are nested together, and the boom 530 can be extended and retracted in the axial direction (longitudinal direction) by the extension and retraction drive of a telescopic cylinder 531 provided inside. In addition, a hoisting cylinder 523 is provided between the base end boom 530a and the support 521, and by driving the hoisting cylinder 523 to extend and retract, the entire boom 530 can be raised and lowered in the up-down plane (vertical plane).

[0077] As shown in FIG. 23, a vertical post 532 is attached to the tip of the tip boom 530c so as to be freely swingable in the up and down direction. The vertical post 532 is swing-controlled (leveling-controlled) so as to always maintain a vertical posture regardless of the elevation angle of the boom 530, as in the first vehicle for working at height 1. A work platform 540 is provided on the vertical post 532 so as to be rotatable (horizontally rotatable) with respect to the vertical post 532, as in the first vehicle for working at height 1. As in the first vehicle for working at height 1, the work platform 540 is configured to be horizontally rotated (swinging operation) around the vertical post 532 by driving a swing motor (not shown). Also, the work platform 540 is configured to be raised and lowered by driving a lifting cylinder (not shown) of the work platform lifting device 536. As described above, the vertical post 532 is leveled and controlled so as to always maintain a vertical posture, so that the floor surface of the work platform 540 is always kept horizontal regardless of the elevation angle of the boom 530.

[0078] The work platform 540 is provided with an upper operating device 545, similar to the first vehicle for working at height 1. By operating the upper operating device 545, a worker on the work platform 540 can perform various operations, such as rotating the swivel platform 250 (rotating the swivel motor 524), raising and lowering the boom 530 (extending and retracting the derrick cylinder 523), extending and retracting the boom 530 (extending and retracting the telescopic cylinder 531), and swinging the work platform 540 (rotating the swing motor). Similar to the first vehicle for working at height 1, a controller (not shown) receives operation signals from the upper operating device 545 and the lower operating device 527 and controls the jack cylinder 511, the swivel motor, and the like. 524, the telescopic cylinder 531, the elevation cylinder 523, the swing motor, the lift cylinder (not shown), etc.

[0079] Next, a temporary support method for temporarily supporting electric wires using the first aerial work platform 1 and the second aerial work platform 501 will be described with reference to Figs. As shown in Figure 13, the temporary support method of this embodiment can be broadly divided into a preparation process ST1 in which the temporary support device 100 (temporary support tool 110) is installed and inspected on the first aerial work vehicle 1; a device movement process ST2 in which the temporary support device 100 is moved to the vicinity of the electric wire C (see Figure 20) by operating the boom of the lower operating device 27 on the first aerial work vehicle 1; a temporary support process ST3 in which the worker boards the work platform 540 of the second aerial work vehicle 501 and causes the temporary support device 100 to temporarily support the electric wire C; a wire fixing process ST4 in which the worker boards the work platform 540 of the second aerial work vehicle 501 and fixes the electric wire C temporarily supported by the temporary support device 100 to an insulator G (see Figure 28) provided on the electric pole D; and a device return process ST5 in which the worker returns the temporary support device 100 to the ground by operating the boom of the lower operating device 27 on the first aerial work vehicle 1.

[0080] In the following description, for ease of explanation, the vehicle body 2, the swivel base 20, the boom 30, the work platform 40, and the upper operation device 45 of the first aerial work vehicle 1 may be referred to as the first vehicle body 2, the first swivel base 20, the first boom 30, the first work platform 40, and the first upper operation device 45. Similarly, the vehicle body 502, the swivel base 520, the boom 530, the work platform 540, and the upper operation device 545 of the second aerial work vehicle 501 may be referred to as the second vehicle body 502, the second swivel base 520, the second boom 530, the second work platform 540, and the second upper operation device 545.

[0081] In the preparation step ST1, first, as shown in Fig. 14, the first vehicle for aerial work 1 is driven to a predetermined position near the utility pole D, and the first vehicle body 2 is lifted and supported by the jacks 10f, 10r. The second vehicle for aerial work 501 is driven to a predetermined position different from the first vehicle for aerial work 1 near the utility pole D, and the second vehicle body 502 is lifted and supported by the jacks 510f, 510r. Next, the boom operation operation of the lower operating device 27 of the first vehicle for aerial work 1 is performed, and the first boom 30 is operated (rotated, raised, lowered, or extended) to move the first work platform 40 to the rear of the first vehicle body 2. At this time, an operator OP (see FIG. 20) on the ground operates the lower priority switch SW24 on the lower operating device 27, while operating the rotation switch SW22 to rotate the first boom 30 (first rotating platform 20), operating the hoist switch SW23 to raise and lower the first boom 30, or operating the extension switch SW21 to extend and retract the first boom 30.

[0082] Next, the worker OP turns on the power switch SW2 of the first upper operating device 45 to turn on the power of the first upper operating device 45. Next, the worker OP performs a swing operation of the sub-boom 74 using the sub-boom swing operation lever LV3 of the first upper operating device 45, and swings and displaces the sub-boom 74 so that the tip side faces the horizontal direction, as shown in Fig. 15. Also, at this time, the worker OP attaches the bracket 150 (bracket base portion 151) of the temporary support device 100 to the tip of the sub-boom 74.

[0083] Next, the worker OP attaches the load detection unit 140 of the temporary support device 100 to the bracket connecting portion 155 of the bracket 150, as shown in Fig. 16. Next, the worker OP turns on a power switch (not shown) provided on the load detection unit 140 to power on the temporary support device 100. The power source for the temporary support device 100 is built into the load detection unit 140 using a lithium ion battery (not shown) or the like.

[0084] Next, the operator OP presses the operation stop switch SW1 of the first upper operating device 45 to stop the operation of the high altitude working device (the first swivel platform 20, the first boom 30, the first work platform 40, etc.). Next, the operator OP switches the mode of the first upper operating device 45. After the switch SW9 is pushed once, the operation stop switch SW1 is pulled to release the stopped state of the operation of the high-altitude work equipment, etc. At this time, the mode changeover switch SW9 outputs a changeover operation signal to the controller 200 to change from the high-altitude mode to the temporary support mode.

[0085] When a switching operation signal for switching from the high altitude mode to the temporary support mode is input to the controller 200, the mode determination unit 205 of the controller 200 determines whether or not the detection signals are input from the horizontal load detector 141 and the vertical load detector 142 of the load detection unit 140, the extension amount of the jacks 10f, 10r detected by the jack extension amount detector 256 is greater than the preset restricted extension amount, and the position of the first work platform 40 calculated by the position calculation unit 203 is within the allowable work range behind the first vehicle body 2. If the determination is NO, the mode determination unit 205 outputs an abnormality notification signal to the first upper operation device 45 and outputs an operation stop signal to the operation control unit 201 to stop the operation of each hydraulic actuator 55. As a result, the operation stop lamp LP1, the winding mode display lamp LP5, and the temporary support mode display lamp LP6 of the first upper operation device 45 flash alternately, and the operator OP is notified of the abnormality. Also, the operation control unit 201 performs control to stop the operation of each hydraulic actuator 55. When an abnormality notification signal is output from the mode determination unit 205, the operator OP can return to the high altitude mode by pressing the operation stop switch SW1 of the first upper operation device 45 and then pressing the mode changeover switch SW9.

[0086] On the other hand, if the determination is YES, the mode determination unit 205 outputs a normal notification signal to the first upper operation device 45. As a result, the temporary support mode display lamp LP6 of the first upper operation device 45 turns on, and the operator OP is notified that the mode has been switched to the temporary support mode. When the normal notification signal is output from the mode determination unit 205, it is possible to switch from the temporary support mode to the pre-use inspection mode.

[0087] To switch from the temporary support mode to the pre-use inspection mode, the operator OP performs a long press operation on the mode changeover switch SW9 of the first upper operation device 45. At this time, the mode changeover switch SW9 outputs a changeover operation signal for switching from the temporary support mode to the pre-use inspection mode to the controller 200. In addition, the temporary support mode display lamp LP6 of the first upper operation device 45 flashes, notifying the operator OP that the mode has been switched to the pre-use inspection mode.

[0088] Next, the worker OP attaches the electric wire support part 120 and the support arm 130 of the temporary support device 100 to the load detection part 140. This completes the installation work of the temporary support tool 110 (i.e., the temporary support device 100) in the first aerial work platform vehicle 1. At this time, as shown in FIG. 3, the temporary support tool 110 is swung and displaced to the above-mentioned parallel position. In addition, the fixing pin 159 is inserted into the first fixing hole 156 of the bracket 150 and the base side fixing hole (not shown) to fix the temporary support tool 110 in the parallel position. Next, the worker OP presses the mode changeover switch SW9 of the first upper operation device 45 only once. At this time, the winding mode display lamp LP5 and the temporary support mode display lamp LP6 of the first upper operation device 45 flash, and the worker OP is prompted to perform the next work.

[0089] Next, the worker OP pulls out the fixing pin 159 from the first fixing hole 156 and the base side fixing hole (not shown) of the bracket 150, and swings and displaces the temporary support 110 from the above-mentioned parallel position to a vertical position, as shown in Fig. 17. The worker OP also inserts the fixing pin 159 through the third fixing hole 158 and the base side fixing hole of the bracket 150, and fixes the temporary support 110 in the vertical position. Next, the worker OP presses the mode changeover switch SW9 of the first upper operating device 45 just once.

[0090] When a switching operation signal for switching from the temporary support mode to the pre-use inspection mode is input to the controller 200, the abnormality determination unit 206 of the controller 200 determines whether or not the horizontal load and the vertical load detected by the horizontal load detector 141 and the vertical load detector 142 change due to the swing displacement of the temporary support tool 110 based on the operation signal input from the mode switching switch SW9 thereafter and the detection signals input from the horizontal load detector 141 and the vertical load detector 142 of the load detection unit 140. If the determination is NO, the abnormality determination unit 206 outputs an abnormality notification signal to the first upper operation device 45. As a result, the operation stop lamp LP1, the winding mode display lamp LP5, and the temporary support mode display lamp LP6 of the first upper operation device 45 flash alternately, and the operator OP is notified of the abnormality. In addition, when an abnormality warning signal is output from the abnormality judgment unit 206, the operator OP can return to the high altitude mode by pressing the operation stop switch SW1 of the first upper operating device 45 and then pressing the mode change switch SW9.

[0091] On the other hand, if the determination is YES, the abnormality determination unit 206 outputs a normal notification signal to the first upper operation device 45. As a result, the winding mode indicator lamp LP5 and the temporary support mode indicator lamp LP6 of the first upper operation device 45 are lit, and the operator OP is notified that no abnormality has been detected in the pre-use inspection mode. When the normal notification signal is output from the abnormality determination unit 206, it is possible to switch from the pre-use inspection mode to the temporary support mode.

[0092] To switch from the pre-use inspection mode to the temporary support mode, the operator OP performs a long press operation on the mode changeover switch SW9 of the first upper operation device 45. At this time, the mode changeover switch SW9 outputs a changeover operation signal for switching from the pre-use inspection mode to the temporary support mode to the controller 200. In addition, the winding mode indicator lamp LP5 of the first upper operation device 45 goes out and only the temporary support mode indicator lamp LP6 lights up, notifying the operator OP that the mode has been switched to the temporary support mode.

[0093] In this way, by switching from the high-altitude mode to the temporary support mode, it becomes possible to temporarily support the electric wire using the first vehicle for high-altitude work 1. Next, the worker OP pulls out the fixing pin 159 from the third fixing hole 158 and the base-side fixing hole (not shown) of the bracket 150, and swings and displaces the temporary support 110 from the above-mentioned vertical position to an inclined position as shown in FIG. 18. The worker OP also inserts the fixing pin 159 through the second fixing hole 157 and the base-side fixing hole of the bracket 150 to fix the temporary support 110 at the inclined position. Next, the worker OP performs a swing operation of the sub-boom 74 using the sub-boom swing operation lever LV3 of the first upper operation device 45, and swings and displaces the sub-boom 74 so that the temporary support 110 becomes horizontal as shown in FIG. 19. At this time, the roller members 124 on the tip side (of the support parts 123) of the three electric wire support parts 120 are released.

[0094] Next, the worker OP performs a swing operation of the first work platform 40 using the swing operation lever LV1 of the first upper operation device 45, and swings the first work platform 40. The worker OP also performs a swing operation of the swing member 71a using the sub-boom swing operation lever LV4 of the first upper operation device 45, and swings the sub-boom 74 (the swing member 71a). In this way, the direction of the electric wire support part 120 of the temporary support device 100 is aligned with the direction of the electric wire C (see FIG. 20). Next, the worker OP detachably attaches the remote operation device 300 to the upper edge of the first work platform 40 as shown in FIG. 6, and electrically connects the other end of the cable 301 (see FIG. 7) to an input / output port (not shown) of the first upper operation device 45.

[0095] Next, in the device moving step ST2, the worker OP operates the boom of the lower operating device 27 of the first aerial work vehicle 1 to operate (raise, lower, extend, or rotate) the first boom 30, and moves the temporary support device 100 to the vicinity of the electric wire C as shown in FIG. At this time, the worker OP on the ground operates the lower priority switch SW24 on the lower operating device 27, while operating the hoist switch SW23 to operate the first boom 30 to raise or lower, the telescopic switch SW21 to operate the first boom 30 to extend or retract, or the swivel switch SW22 to operate the first boom 30 (first swivel platform 20). In this way, by operating the boom operation of the lower operating device 27 on the first aerial work vehicle 1, the temporary support device 100 can be moved to the vicinity of the electric wire C that is supported by the electric pole D and located at a predetermined height.

[0096] The operation control unit 201 of the first vehicle for aerial work 1 electromagnetically drives the control valve 53 to operate each hydraulic actuator 55 based on operation signals from the lower operation device 27 (telescopic switch SW21, swivel switch SW22, hoist switch SW23, lower priority switch SW24), thereby controlling the operation of the first boom 30. When a switching operation signal for switching to the temporary support mode is input from the mode switching switch SW9 of the first upper operation device 45, the boom operation regulating unit 204 of the first vehicle for aerial work 1 compares the position of the first work platform 40 calculated by the position calculation unit 203 with a preset allowable work range until the horizontal load and vertical load detected by the horizontal load detector 141 and vertical load detector 142 of the load detection unit 140 change beyond a predetermined change amount. When the position of the first work platform 40 calculated by the position calculation unit 203 reaches the outer edge of the allowable working range, the boom operation regulation unit 204 regulates the operation of the first boom 30 in the direction in which the first work platform 40 moves outside the allowable working range, regardless of the operation signal from each operating device 27, 45, 300.

[0097] Next, in the temporary support process ST3, a worker OP on the ground gets on the second work platform 540 of the second aerial work vehicle 501. The worker OP who gets on the second work platform 540 performs a boom operation operation of the second upper operation device 545, and operates (raises, lowers, extends, or rotates) the second boom 530 as shown in Fig. 21 to move the second work platform 540 to the vicinity of the first work platform 40 of the first aerial work vehicle 1.

[0098] At this time, the worker OP checks whether the orientation of the electric wire support part 120 of the temporary support device 100 matches the orientation of the electric wire C. If the orientation of the electric wire support part 120 of the temporary support device 100 does not match the orientation of the electric wire C, the worker OP who is on the second work platform 540 approaches the first upper operation device 45 of the first aerial work vehicle 1. Then, the worker OP performs a swing operation operation of the swing operation lever LV1 of the first upper operation device 45 or a rotation operation operation of the sub-boom swing operation lever LV4 to swing the first work platform 40 or rotate the sub-boom 74, thereby adjusting the orientation of the electric wire support part 120 of the temporary support device 100.

[0099] Next, the worker OP on the second workbench 540 removes the remote control device 300 from the upper edge of the first workbench 40, as shown in Fig. 22. Next, the worker OP on the second workbench 540 turns on the power switch SW41 of the remote control device 300 to turn on the power of the remote control device 300. Note that in Figs. 22, 23, 25, and 28, the worker OP on the second workbench 540 performs each operation while holding the remote control device 300, but it is possible to perform each operation with the remote control device 300 detachably attached to the upper edge of the second workbench 540 (see Fig. 24).

[0100] Next, the worker OP on the second work platform 540 performs a boom operation operation on the remote control device 300, and operates (raises, lowers, retracts, or rotates) the first boom 30 to bring the electric wire support part 120 of the temporary support device 100 closer to the electric wire C. Furthermore, the worker OP performs a boom operation operation on the remote control device 300, and operates the first boom 30 to insert the electric wire C into the gap provided in the electric wire support part 120 as shown in FIG. 23. At this time, An operator OP mounted on the work platform 540 operates the boom operation switch SW43 on the remote control device 300, while operating the hoisting switch SW46 to operate the first boom 30 to raise or lower, the telescopic switch SW44 to operate the first boom 30 to extend or lower, or the swivel switch SW45 to operate the first boom 30 (first swivel base 20).

[0101] The operation control section 201 of the first aerial work vehicle 1 controls the operation of the first boom 30 by electromagnetically driving the control valves 53 and operating each hydraulic actuator 55 based on operation signals from the remote operation device 300 (boom operation switch SW43, telescopic switch SW44, swing switch SW45, and hoist switch SW46). When the same boom operation operation as the boom operation operation of the lower operation device 27 is performed by the remote operation device 300, the operation control section 201 controls the telescopic operation of the hoisting cylinder 23, the telescopic operation of the telescopic cylinder 31, and the rotation operation of the swing motor 24 so that the speed at which the first boom 30 operates (raises and lowers, telescopic, or swings) in response to the boom operation operation of the remote operation device 300 is lower than the speed at which the first boom 30 operates in response to the boom operation operation of the lower operation device 27. As a result, even if an erroneous operation is performed on the remote control device 300, the first boom 30 operates at a relatively slow speed, making it easy to avoid phenomena that reduce safety, and improving the safety of the work of temporarily supporting the electric wire C on the temporary support device 100.

[0102] Next, the worker OP on the second workbench 540 closes the roller member 124 on the tip side of the electric wire support part 120 using a hot stick (insulated tool for live line work) HT, as shown in Fig. 24. The worker OP also uses the hot stick HT to remove a binding wire (not shown) for fixing the electric wire C from the electric wire C. This causes the electric wire C to be inserted into the gap provided in the electric wire support part 120 of the temporary support device 100, making it possible for the temporary support device 100 to temporarily support the electric wire C.

[0103] Next, the worker OP on the second work platform 540 performs a boom operation operation of the remote control device 300 as shown in Fig. 25 to operate (raise, lower, retract, or rotate) the first boom 30 to move the temporary support device 100 together with the electric wire C. At this time, the worker OP on the second work platform 540 operates the boom operation switch SW43 on the remote control device 300, while performing an operation of the hoist switch SW46 to raise or lower the first boom 30, an operation of the telescopic switch SW44 to extend or retract the first boom 30, or an operation of the swivel switch SW45 to rotate the first boom 30 (first swivel platform 20).

[0104] At this time, the load from the electric wire C acts on the temporary support tool 110 of the temporary support device 100. As a result, the horizontal load and the vertical load detected by the horizontal load detector 141 and the vertical load detector 142 of the load detection unit 140 change significantly beyond a predetermined change amount. In this case, the boom operation regulating unit 204 of the first aerial work vehicle 1 compares the moment calculated by the moment calculation unit 202 with a preset regulated moment. When the moment calculated by the moment calculation unit 202 reaches the regulated moment, the boom operation regulating unit 204 regulates, among the operations of the first boom 30, operations in a direction that increases the overturning moment acting on the first boom 30 (downturning movement, extension movement, and rotation movement in a predetermined direction), regardless of the operation signals from each of the operation devices 27, 45, and 300.

[0105] Next, the worker OP on the second work platform 540 attaches the remote control device 300 to the upper edge of the first work platform 40 and returns it, as shown in FIG. 26. At this time, the worker OP turns off the power switch SW41 of the remote control device 300, turning off the power to the remote control device 300. Next, the worker OP on the second work platform 540 approaches the first upper operation device 45. Then, the worker OP turns off the power switch SW2 of the first upper operation device 45, turning off the power to the first upper operation device 45. In this manner, the task of temporarily supporting the electric wire C on the temporary support device 100 of the first aerial work vehicle 1 is completed. will be carried out.

[0106] The first vehicle for work at height 1 can be left in a state in which the electric wire C is temporarily supported by the temporary support device 100. Therefore, the worker OP who boards the second work platform 540 performs the boom operation operation of the second upper operation device 545, and operates the second boom 530 (lowering, reducing, or rotating) to move the second work platform 540 to the vicinity of the ground. The worker OP who gets off the second work platform 540 turns off the engine key (not shown) of the first vehicle for work at height 1. In addition, the worker OP who gets off the second work platform 540 can also perform other work. As a result, according to this embodiment, the work of temporarily supporting the electric wire C on the temporary support device 100 of the first vehicle for work at height 1 can be performed without boarding the first work platform 40, so that waste of work can be eliminated.

[0107] Next, in the electric wire fixing process ST4, the worker OP on the ground turns on the engine key (not shown) of the first vehicle for working at height 1. Next, the worker OP on the ground gets on the second work platform 540 of the second vehicle for working at height 501. The worker OP on the second work platform 540 performs a boom operation operation of the second upper operation device 545, and operates (raise / lower, extend, or rotate) the second boom 530 to move the second work platform 540 to the vicinity of the first work platform 40 of the first vehicle for working at height 1, as shown in FIG.

[0108] Next, the worker OP who has boarded the second work platform 540 approaches the first upper operation device 45 of the first aerial work vehicle 1. Then, the worker OP performs an on operation of the power switch SW2 of the first upper operation device 45 to turn on the power of the first upper operation device 45. Note that once the engine key (not shown) of the first aerial work vehicle 1 is turned off, the temporary support mode returns to the aerial mode. Then, the worker OP operates the first upper operation device 45 to switch from the aerial mode to the temporary support mode. Specifically, the worker OP performs a push operation on the operation stop switch SW1 of the first upper operation device 45 to stop the operation of the aerial work equipment, etc. (the first swivel platform 20, the first boom 30, the first work platform 40, etc.). Next, the worker OP performs a push operation on the mode changeover switch SW9 of the first upper operation device 45 only once, and then performs a pull operation on the operation stop switch SW1 to release the state in which the operation of the aerial work equipment, etc. is stopped.

[0109] Next, the worker OP on the second workbench 540 removes the remote operation device 300 from the upper edge of the first workbench 40. Next, the worker OP on the second workbench 540 turns on the power switch SW41 of the remote operation device 300 to turn on the power of the remote operation device 300.

[0110] Next, the worker OP on the second work platform 540 performs a boom operation operation of the remote control device 300 to operate (raise, lower, retract, or rotate) the first boom 30, and moves the electric wire C temporarily supported by the temporary support device 100 closer to the upper part of the insulator G on the utility pole D. Furthermore, the worker OP performs a boom operation operation of the remote control device 300 to operate the first boom 30, and places the electric wire C temporarily supported by the temporary support device 100 on the upper part of the insulator G on the utility pole D, as shown in FIG. 28. At this time, the worker OP on the second work platform 540 performs a hoisting operation operation of the first boom 30 using the hoist switch SW46, a telescopic operation operation of the first boom 30 using the telescopic switch SW44, or a rotation operation operation of the first boom 30 (first rotating platform 20) using the rotation switch SW45, while operating the boom operation switch SW43 on the remote control device 300.

[0111] Next, the worker OP on the second workbench 540 uses a hot stick HT to fix the electric wire C to the upper part of the insulator G on the electric pole D with a binding wire (not shown). The worker OP also uses the hot stick HT to fix the wire C to the upper part of the insulator G on the electric pole D. Then, the worker OP on the second work platform 540 operates the boom on the remote control device 300 to operate (raise, lower, retract, or rotate) the first boom 30 to move the electric wire supporting part 120 of the temporary support device 100 away from the electric wire C. At this time, the worker OP on the second work platform 540 operates the boom operation switch SW43 on the remote control device 300, and operates the hoist switch SW46 to raise or lower the first boom 30, operates the telescopic switch SW44 to extend or retract the first boom 30, or operates the rotation switch SW45 to rotate the first boom 30 (first rotating platform 20).

[0112] Next, the worker OP on the second work platform 540 attaches the remote control device 300 to the upper edge of the first work platform 40 and returns it. At this time, the worker OP turns off the power switch SW41 of the remote control device 300 to turn off the power of the remote control device 300. In this way, the work of fixing the electric wire C temporarily supported by the temporary support device 100 of the first aerial work vehicle 1 to the insulator G of the utility pole D is performed. The worker OP on the second work platform 540 performs a boom operation operation of the second upper operation device 545, and operates (lowers, retracts, or rotates) the second boom 530 to move the second work platform 540 near the ground.

[0113] Next, in the device return step ST5, the worker OP who descended from the second work platform 540 performs a boom operation operation of the lower operating device 27 of the first aerial work vehicle 1, and operates (lowers, retracts, or rotates) the first boom 30 to move the temporary support device 100 near the ground. At this time, the worker OP on the ground performs an operation of the hoisting switch SW23 to operate the first boom 30, an operation of the telescopic switch SW21 to operate the first boom 30, or an operation of the swivel switch SW22 to operate the first boom 30 (first swivel platform 20) while operating the lower priority switch SW24 of the lower operating device 27. In this way, the temporary support device 100 can be returned to the ground by operating the boom operation of the lower operating device 27 of the first aerial work vehicle 1.

[0114] After returning the temporary support device 100 to the ground, the worker OP operates the first upper operation device 45 to switch from the temporary support mode to the high-altitude mode. To switch from the temporary support mode to the high-altitude mode, the worker OP first performs a push operation on the operation stop switch SW1 of the first upper operation device 45 to stop the operation of the high-altitude work device and the like (the first swivel platform 20, the first boom 30, the first work platform 40, and the like). Next, the worker OP pushes the mode changeover switch SW9 of the first upper operation device 45 only once, and then performs a pull operation on the operation stop switch SW1 to release the state in which the operation of the high-altitude work device and the like has been stopped. At this time, the mode changeover switch SW9 outputs a changeover operation signal to the controller 200 to switch from the temporary support mode to the high-altitude mode. In addition, the temporary support mode indicator lamp LP6 (and the winding mode indicator lamp LP5) of the first upper operation device 45 are turned off, and the worker OP is notified that the mode has been switched to the high-altitude mode.

[0115] Next, the worker OP turns off the power switch (not shown) of the load detection unit 140 of the temporary support device 100, turning off the power to the temporary support device 100. Next, the worker OP removes the electric wire support unit 120 and the support arm 130 of the temporary support device 100 from the load detection unit 140. Next, the worker OP removes the load detection unit 140 from the bracket 150 of the temporary support device 100. Then, the worker OP removes the bracket 150 from the tip of the sub-boom 74.

[0116] As described above, according to the temporary support method of this embodiment, the first vehicle for work at height 1 is provided with the remote control device 300 that is detachably attached to the first work platform 40 and that can perform boom operation for operating the first boom 30 even when the device is removed from the first work platform 40 and is in a position away from the first work platform 40. The operator then gets on to the work platform 540 of the first vehicle 1, and at the second work platform 540 separated from the first work platform 40, performs boom actuation operation of the remote control device 300 detached from the first work platform 40, and operates the first boom 30 to make the temporary support device 100 temporarily support the electric wire C. This allows the operator to perform the work of making the temporary support device 100 of the first vehicle 1 for working at a height temporarily support the electric wire C without getting on to the first work platform 40, thereby making it possible to eliminate unnecessary work.

[0117] In the above-mentioned temporary support construction method, when the same boom operation as the boom operation of the lower operating device 27 is performed by the remote operating device 300, the operation control section 201 of the first aerial work vehicle 1 controls the telescopic operation of the hoisting cylinder 23, the telescopic operation of the telescopic cylinder 31, and the rotation operation of the swing motor 24 so that the speed at which the first boom 30 operates (raises, lowers, retracts, or swings) in response to the boom operation operation of the remote operating device 300 is lower than the speed at which the first boom 30 operates in response to the boom operation operation of the lower operating device 27. As a result, even if an erroneous operation is performed by the remote operating device 300, the first boom 30 operates at a relatively low speed, so that phenomena that reduce safety can be easily avoided, and the safety of the work of temporarily supporting the electric wire C on the temporary support device 100 can be improved.

[0118] Furthermore, with the (first) aerial work vehicle 1 according to this embodiment, for example, it is possible to board another work platform of another aerial work vehicle, and at the other work platform separate from the work platform 40, perform boom actuation operation of the remote control device 300 detached from the work platform 40, and operate the boom 30 to make the temporary support device 100 temporarily support the electric wire C. In this way, it is possible to perform the work of making the temporary support device 100 temporarily support the electric wire C without boarding the work platform 40, thereby eliminating unnecessary work.

[0119] In the above-mentioned (first) aerial work vehicle 1, the operation control section 201 controls the telescopic operation of the hoisting cylinder 23, the telescopic operation of the telescopic cylinder 31, and the rotation operation of the swing motor 24 so that the speed at which the boom 30 operates (raises, lowers, retracts, or swings) in response to the boom operation operation of the remote control device 300 is lower than the speed at which the boom 30 operates in response to the boom operation operation of the lower operating device 27. This makes it possible to easily avoid phenomena that reduce safety, as described above, and improves the safety of the work of temporarily supporting the electric wire C on the temporary support device 100.

[0120] In the above-described embodiment, the remote control device 300 is electrically connected to the controller 200 and the like via the cable 301, but this is not limiting. For example, the remote control device may be configured to be capable of transmitting and receiving information to and from the controller 200 using wireless communication.

[0121] In the above-described embodiment, the remote control device 300 has the telescopic switch SW44, the rotation switch SW45, and the raise / lower switch SW46, but is not limited to these and may further have a swing operation switch (not shown) for swinging the work platform 40, and a sub-boom rotation operation switch (not shown) for rotating the sub-boom 74 (rotating member 71a).

[0122] In the above-described embodiment, the high altitude mode and the temporary support mode are provided, but a winding mode may also be provided. The winding mode is a control mode that allows the lifting device 70 to perform an oblique pulling operation in which the electric wire is pulled in an oblique direction and a horizontal pulling operation in which the electric wire is pulled in a horizontal direction. In this case, the mode changeover switch SW9 may be configured to be able to be switched from the high altitude mode to the temporary support mode, the winding mode, the high altitude mode, the temporary support mode, and so on, in that order, by a push operation.

[0123] In the above-described embodiment, the hydraulic pump for supplying hydraulic oil is a (first) hydraulic pump 51 driven by the engine E of the vehicle body 2 and the power take-off mechanism 52, and an electric motor ( The first hydraulic pump (not shown) can be switched to a second hydraulic pump (not shown) driven by an electric motor (not shown), but the present invention is not limited to this. For example, only a hydraulic pump driven by the engine E of the vehicle body 2 and the power take-off mechanism 52 may be provided, or only a hydraulic pump driven by an electric motor (not shown) may be provided. [Explanation of symbols]

[0124] 1 (First) Aerial Work Platform 2 (First) Car Body 23. Dinghy cylinder 24 Swing motor 31 Telescopic cylinder 27 Lower operating device 30 (First) Boom 40 (1st) Workbench 45 (First) Upper Operating Device 100 Temporary support device 200 Controller 204 Boom operation control part 300 Remote Control Device 501 Second Aerial Work Platform 502 Second Body 530 Second Boom 540 Second Worktable 545 Second upper operating device

Claims

1. A first aerial work vehicle including: a first boom provided on a first vehicle body capable of travelling so as to be operable to at least raise and lower; a first work platform provided at a tip of the first boom; a first operating device for performing a boom operating operation for operating the first boom; and a temporary support device provided at the tip of the first boom for temporarily supporting an electric wire; A temporary support method for temporarily supporting an electric wire using a second aerial work vehicle including a second boom mounted on a second vehicle body capable of travelling and capable of movement including at least elevation and undulation, a second work platform mounted on a tip of the second boom and capable of being ridden by the user, and a second operating device for operating the second boom, the method comprising the steps of: The first operating device is a lower operation device provided on the first vehicle body and configured to perform a boom operation for operating the first boom; a remote control device that is detachably attached to the first work platform and is capable of performing a boom operation for operating the first boom even when the remote control device is detached from the first work platform and is at a position away from the first work platform, performing a boom operating operation of the lower operating device, and operating the first boom to move the temporary support device to the vicinity of an electric wire located at a predetermined height; getting on the second work platform, operating the boom of the second operating device provided on the second work platform, and operating the second boom to move the second work platform to the vicinity of the first work platform; In the second work platform, a boom actuation operation of the remote control device detached from the first work platform is performed to actuate the first boom and cause the electric wire to be temporarily supported by the temporary support device; The first aerial work vehicle comprises: an actuator that operates the first boom; a temporary support construction method comprising: an operation control unit that controls the operation of the actuator so that, when the same boom operation operation as that of the lower operating device is performed on the remote operating device, the speed at which the first boom operates in response to the boom operation operation of the remote operating device is lower than the speed at which the first boom operates in response to the boom operation operation of the lower operating device.

2. A boom is provided on a travellable vehicle body so as to be operable to at least move up and down; A work platform that is provided at the tip of the boom and can be ridden on; a temporary support device provided at a tip of the boom for temporarily supporting an electric wire; a lower operation device provided on the vehicle body and configured to perform a boom operation for operating the boom; a remote control device that is detachably attached to the work platform and is capable of performing a boom operation for operating the boom even when the remote control device is removed from the work platform and is located at a position away from the work platform; An actuator that operates the boom; and an operation control unit that controls the operation of the actuator so that, when the same boom operation operation as that of the lower operating device is performed on the remote operating device, the speed at which the boom operates in response to the boom operation operation of the remote operating device is lower than the speed at which the boom operates in response to the boom operation operation of the lower operating device.

Images