JP2023062537A - Authentication system for high-place work vehicle - Google Patents

Abstract

To provide an authentication system for a high-place work vehicle, which can reduce the execution frequency of authentication during work.SOLUTION: When a power cut-off operation is carried out by an upper power source switch 81 to turn off power, and then a power input operation is carried out by the upper power source switch 81 to turn on power, if the power-off and power-on operations are carried out in a state where a lifting device 20 is not stored, authentication appropriate information based on a last authentication result is maintained, and an operation permissible state is set without carrying out authentication again. On the other hand, if the power-off and power-on operations are carried out in a state where the lifting device 20 is stored, the authentication appropriate information based on the last authentication result is cleared, and authentication is carried out again.SELECTED DRAWING: Figure 3

Description

The present invention relates to an authentication system for an aerial work platform equipped with a work platform that can be moved up and down by a lifting device.

An aerial work platform includes a traveling body, a lifting device provided on the traveling body and capable of lifting and lowering, and a work platform supported by the lifting device. Such aerial work vehicles include those configured based on truck vehicles and self-propelled vehicles having wheels or crawler mechanisms as the form of traveling body. Also, as for the form of the lifting device, there is a boom type that can swivel, hoist, and extend and retract, and a vertical lifting type that has a scissors link mechanism or a telescopic post. Various aerial work platforms are known (see, for example, Patent Literature 1).

JP 2015-189534 A

In order to prevent the aerial work platform from being used without permission or being stolen, it is determined whether or not the worker who intends to operate the traveling structure or lifting device is a qualified person. There is known an authentication system for aerial work vehicles that performs authentication for As such an authentication system, for example, an actuation start operation (for example, an operation for turning on a power switch for turning on/off the power of a vehicle) is performed to start the operation of a traveling object or a lifting device. password, and if the authentication information is correct (for example, if the entered password matches the one registered in advance), the running body or lifting device There are things that allow operation.

By the way, in an aerial work vehicle, after the work platform is moved to a predetermined work position by the lifting device, an operation stop operation (for example, , an operation to turn off the power with the power switch) to stop the operation of the lifting device, etc. Then, when the work at that work position is completed, the operation start operation is performed again to move the work table to another position. As described above, in the aerial work vehicle, the operation to start operation and the operation to stop operation are often repeatedly performed alternately during work.

However, in a conventional authentication system for such an aerial work vehicle, authentication is performed by presenting authentication information each time an operation start operation is performed. For this reason, it is troublesome for the worker to perform the authentication operation (presentation of the authentication information) many times during the work, and there is a problem that the work efficiency is lowered.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an authentication system for an aerial work vehicle that can reduce the number of times authentication is performed during work.

In order to solve the above-mentioned problems, the present invention provides a running body capable of running, a lifting device provided on the running body so as to move up and down, a work table supported by the lifting device, and an operation of the lifting device. and an operation operation device for performing an operation start operation for starting the operation and an operation stop operation for stopping the operation of the lifting device, and when the operation start operation is performed by the operation operation device, based on predetermined authentication information and an authentication control device that performs authentication and permits operation of the lifting device when the authentication information is correct. Further, the authentication system of the first aspect according to the present invention includes a storage detection device (for example, the storage detection unit 56 in the first embodiment) that detects whether the lifting device is in the storage state, In a situation where the authentication control device permits the operation of the lifting device based on the result of the authentication, the operation stop operation is performed by the operation operation device to stop the operation of the lifting device, and then the operation operation is performed. When the operation start operation is performed by the device, the result of the authentication is maintained when the lifting device is not in the retracted state based on the detection result by the storage detection device, and the lifting device is operated without performing the authentication again. is permitted to operate, and when the lifting device is in the retracted state, the result of the authentication is cleared and the authentication is performed again.

Further, the authentication system of the second aspect according to the present invention includes a posture detection device (for example, the posture detection unit 156 in the second embodiment) that detects whether the lifting device is in a predetermined posture, and the authentication control In a situation where the operation of the lifting device is permitted based on the result of the authentication, the operation of the lifting device is stopped by the operation of the operating device, and then the operation of the lifting device is stopped. When the operation start operation is performed, if the lifting device is not in the predetermined posture based on the detection result of the posture detection device, the result of the authentication is maintained and the lifting device is operated without performing the authentication again. When the operation is permitted and the lifting device is in the predetermined posture, the result of the authentication is cleared and the authentication is performed again.

Further, an authentication system according to a third aspect of the present invention includes a boarding detection device (for example, boarding detection units 57 and 157 in the embodiment) that detects whether or not a worker is boarding the workbench, In a situation where the authentication control device permits the operation of the lifting device based on the result of the authentication, the operation stop operation is performed by the operation operation device to stop the operation of the lifting device, and then the operation operation is performed. When the operation start operation is performed by the device, based on the detection result of the boarding detection device, the work table is operated both when the operation stop operation is performed by the operation operation device and when the next operation start operation is performed. When a person is on board, the result of the authentication is maintained, and the operation of the lifting device is permitted without performing the authentication again. When no worker is on the workbench at least at one time, the result of the authentication is cleared and the authentication is performed again.

Further, in the authentication system of the fourth aspect according to the present invention, the actuation operation device includes an upper actuation operation device provided on the workbench and a lower actuation operation device provided on the traveling body, In a situation where the authentication control device permits the operation of the lifting device based on the result of the authentication, the operation of the lifting device is stopped by the operation to stop operation by the upper operation device, and then the operation of the lifting device is stopped. When the operation start operation is performed by the upper operation device, the result of the authentication is maintained and the operation of the lifting device is permitted without performing the authentication again, and the operation is stopped by the lower operation device. When an operation is performed to stop the operation of the lifting device and then the operation to start operation is performed by the lower operation device, the result of the authentication is cleared and the authentication is performed again. be.

In the authentication system of the second aspect, it is preferable that the predetermined posture is a posture in which a worker can get on and off the workbench. Moreover, in the authentication system of the first aspect or the second aspect, it is preferable that the operating device is an upper operating device provided on the workbench. Moreover, in the authentication system of the third aspect, it is preferable that the operating device is a lower operating device provided on the traveling body.

In the authentication system according to the first aspect of the present invention, in a situation where the operation of the lifting device is permitted based on the result of the authentication, the operation stop operation is performed by the operation operation device to stop the operation of the lifting device, and then When the operation start operation is performed by the operating device and the lifting device is not in the retracted state, the result of the authentication is maintained and the operation of the lifting device is permitted without re-authentication. When the lifting device is not in the retracted state, it means that the work is in progress in many cases. Therefore, according to the authentication system of the first mode, the number of times authentication is performed during work can be reduced. On the other hand, in the authentication system of the first aspect, in the above case, when the lifting device is in the retracted state, the result of the authentication is cleared and authentication is performed again, thereby preventing unauthorized use of the lifting device in the retracted state. can do.

In the authentication system according to the second aspect of the present invention, in a situation where the operation of the lifting device is permitted based on the result of the authentication, the operation stop operation is performed by the operation operation device to stop the operation of the lifting device, and then When the operation start operation is performed by the operating device and the lifting device is not in the predetermined posture, the result of the authentication is maintained and the operation of the lifting device is permitted without re-authentication. By setting, as a predetermined posture, a posture that is assumed not to be during work, such as a retracted posture or a posture in which a worker can get on and off the workbench, the authentication system of the second mode can perform authentication during work. The number of times can be reduced. On the other hand, in the authentication system of the second aspect, in the above case, when the lifting device is in the predetermined posture, the result of the authentication is cleared and the authentication is performed again, so that the lifting device in the predetermined posture is prevented from being used without permission. can do.

In the authentication system according to the third aspect of the present invention, in a situation where the operation of the lifting device is permitted based on the result of the authentication, the operation stop operation is performed by the operation operation device to stop the operation of the lifting device. In the case where the operation start operation is performed by the operation operation device, the result of authentication when the operator is on the workbench both when the operation stop operation is performed by the operation operation device and when the next operation start operation is performed. and permit operation of the lifting device without re-authentication. Since a worker on the workbench means that the work is in progress in many cases, the authentication system of the third aspect can reduce the number of times authentication is performed during work. On the other hand, in the authentication system of the third aspect, in the above case, when the operator is not on the workbench at least one of the execution of the operation stop operation by the operation device and the execution of the next operation start operation, authentication is performed. Since the result of (1) is cleared and the authentication is performed again, it is possible to prevent unauthorized use of the lifting device on which no worker is on the workbench.

In the authentication system according to the fourth aspect of the present invention, in a situation where the operation of the lifting device is permitted based on the authentication result, the operation stop operation is performed by the upper operating device, and the operation of the lifting device is stopped. When the operation start operation is performed by the upper operation operation device, the authentication result is maintained and the operation of the lifting device is permitted without re-authentication. Since the operation to stop operation and the operation to start operation by the upper operating device is often performed during work, according to the authentication system of the fourth aspect, it is possible to reduce the number of times authentication is performed during work. . On the other hand, in the authentication system of the fourth aspect, in the above situation, when the operation stop operation is performed by the lower operation device to stop the operation of the lifting device, and then the operation start operation is performed by the lower operation operation device Clears the result of authentication and performs authentication again. Since it is often the case that the operation stop operation and the operation start operation are performed by the lower operation operation device after the end of the work, according to the authentication system of the fourth mode, the lifting device after the end of the work is used without permission. can be prevented.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view of a vertical elevating vehicle equipped with an authentication system according to a first embodiment of the present invention; FIG. 4 is a block diagram showing an operation control configuration of the vertical elevating vehicle for work in high places. It is a block diagram which shows the structure of the authentication system which concerns on the said 1st Embodiment. FIG. 10 is a side view of a boom-type aerial work vehicle equipped with an authentication system according to a second embodiment of the present invention; FIG. 2 is a block diagram showing an operation control configuration of the boom type aerial work vehicle; It is a block diagram which shows the structure of the authentication system which concerns on the said 2nd Embodiment.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a self-propelled vertical elevating work vehicle equipped with an authentication system according to the first embodiment of the present invention. This aerial work vehicle 1 includes a traveling body 10 having four tire wheels 11 provided on the front, back, left and right, a lifting device 20 provided on the traveling body 10, and a work table supported by the lifting device 20. 30.

The traveling body 10 includes left and right traveling motors 12a and 12b (see FIG. 2) that rotationally drive a pair of left and right front wheels 11a and 11b of the tire wheels 11, respectively, and a steering mechanism (non-rotating mechanism) that connects the left and right front wheels 11a and 11b. ), and a steering cylinder 17 (see FIG. 2) that drives the steering mechanism to change the steering angle of the left and right front wheels 11a and 11b (the deflection angle with respect to the longitudinal center axis of the traveling body 10). there is A pair of left and right rear wheels 11c and 11d of the tire wheels 11 are non-driving wheels connected by an axle. The traveling body 10 rotates the left and right front wheels 11a and 11b by the left and right traveling motors 12a and 12b, and changes the steering angle of the left and right front wheels 11a and 11b by the steering cylinder 17, thereby traveling and moving in a desired direction. configured as possible. The left and right front wheels 11a and 11b may be used as steering wheels, and the left and right rear wheels 11c and 11d may be used as drive wheels driven by a travel motor.

The lifting device 20 has two X-shaped link members 20a arranged side by side in the lateral direction of the traveling body 10, and the central portions of the two link members 20a are connected by a first pivotal connection rod 20b. are arranged vertically in three stages and each pivotally connected by a second pivot rod 20c; consists of

The lowermost link member 20a that constitutes the scissors link mechanism is pivotally connected to the upper portion of the running body 10 at its lower end on the front side of the running body 10, and is connected to the lower end on the rearward side of the running body 10. is provided with a roller 20e that rolls on a rail provided on the upper portion of the traveling body 10. As shown in FIG. The uppermost link member 20a that constitutes the scissors link mechanism is pivotally connected to the lower part of the workbench 30 at the upper end on the side positioned in front of the traveling body 10, and at the upper end on the side positioned behind the traveling body 10. is provided with a roller 20f that rolls on a rail provided below the workbench 30. As shown in FIG. The lifting device 20 is configured to move the work table 30 vertically by extending and retracting the scissors link mechanism in the vertical direction by extending and retracting the lifting cylinder 21 .

The work table 30 includes a work floor 31 on which a worker can ride, handrails 32 erected at the front, rear, left, and right ends of the work floor 31, and an operation device provided above the handrail 32 on the front side. a device 40; As shown in FIG. 2 , the operation device 40 includes a travel control lever 41 for starting/stopping and advancing/reversing the traveling object 10, and a steering operation of the traveling object 10 (for steering the left and right front wheels 11a and 11b). and a lifting operation lever 43 for lifting and lowering the workbench 30 . The aerial work platform 1 moves the traveling body 10 and moves the work platform 30 up and down by operating the travel control lever 41, the steering dial 42, and the elevation control lever 43 by a worker on the work platform 30. It is configured so that it can be moved to a desired working position together.

The travel control lever 41 is positioned in a neutral position in a vertical posture in a non-operated state, and can be tilted forward and backward based on this neutral position. The operating state of the traveling control lever 41 (operation direction and operation amount with reference to the neutral position) is detected by a traveling operation detector 41 a such as a potentiometer provided in the operating device 40 , and the detection signal is sent to the controller 50 . is entered. The forward tilting operation of the travel control lever 41 corresponds to a forward travel command for the traveling body 10, and the controller 50 sets the target speed for forward travel to a larger value as the tilting operation amount increases. The rearward tilting operation of the travel control lever 41 corresponds to a backward travel command for the traveling body 10, and the greater the amount of tilting operation, the larger the target speed for backward travel is set in the controller 50. FIG. The returning operation of the traveling control lever 41 to the neutral position corresponds to a stop command of the traveling body 10 .

The steering dial 42 is positioned at a neutral position (a position where a mark on the steering dial 42 and a mark on the surface of the operating device 40 match, as shown in FIG. 2) in a non-operating state. It is configured to be twistable to the right (clockwise) and left (counterclockwise) with respect to the position. The operating state of the steering dial 42 (operating direction and operating amount with reference to the neutral position) is detected by a steering operation detector 42a such as a potentiometer provided in the operating device 40, and the detection signal is input to the controller 50. be done. The clockwise twist operation of the steering dial 42 corresponds to a command to steer the front wheels 11a and 11b in the right direction. set. The counterclockwise twist operation of the steering dial 42 corresponds to a command to steer the front wheels 11a and 11b to the left. set. Further, the return operation of the steering dial 42 to the neutral position corresponds to a command to set the steering angle of the front wheels 11a and 11b to zero (straight travel command for the traveling body 10).

The elevating operation lever 43 is positioned at a neutral position in which it is in a vertical posture in a non-operating state, and can be tilted forward and backward based on this neutral position. The operating state (operation direction and operation amount with reference to the neutral position) of the lifting operation lever 43 is detected by a lifting operation detector 43 a such as a potentiometer provided in the operating device 40 , and the detection signal is sent to the controller 50 . is entered. A tilting operation of the lifting operation lever 43 forward from the neutral position corresponds to a lowering command for the work platform 30 , and a tilting operation to the rear from the neutral position corresponds to a raising command for the working platform 30 . Further, the returning operation of the lifting operation lever 43 to the neutral position corresponds to the stop command of the workbench 30 .

The traveling body 10 is provided with a battery B and an inverter IV that converts DC power from the battery B into AC power and supplies the AC power to the left and right travel motors 12a and 12b. The inverter control unit 51 of the controller 50 controls the left and right travel motors 12a and 12b through the inverter IV so that the left and right travel motors 12a and 12b are rotationally driven at a rotational direction and a rotational speed corresponding to the operating state of the travel control lever 41. , and controls the left and right traveling motors 12a and 12b to rotate.

Further, the traveling body 10 includes a pump driving motor MT that is rotationally driven by electric power from the battery B, a hydraulic pump P that is driven by the pump driving motor MT, a hydraulic oil tank T, and a steering cylinder 17. A steering control valve 71 for switching the supply direction of oil and an elevation control valve 72 for switching the supply direction (including whether or not to supply) hydraulic oil to the elevation cylinder 21 are provided. The pump drive motor MT is rotationally driven only when the workbench 30 is raised by the elevation operation lever 43 and the steering operation is performed by the steering dial 42 . Hydraulic oil discharged from the hydraulic pump P is supplied to the steering cylinder 17 via the steering control valve 71 and to the elevating cylinder 21 via the elevating control valve 72 .

The steering control unit 52 of the controller 50 electromagnetically drives the spool of the steering control valve 71 according to the operation of the steering dial 42 to switch the supply direction of the hydraulic oil to the steering cylinder 17, and expands and contracts the steering cylinder 17 to move left and right. The steering angles of the front wheels 11a and 11b are changed. The elevation control unit 53 of the controller 50 electromagnetically drives the spool of the elevation control valve 72 in accordance with the operation of the elevation operation lever 43 to switch the supply direction of the hydraulic oil to the elevation cylinder 21, thereby causing the elevation cylinder 21 to expand and contract. A lifting device 20 controls the lifting and lowering of the workbench 30 .

The lifting device 20 includes a lifting position detector 61 that detects the lifting position (height position) of the workbench 30 based on the extension amount of the lifting cylinder 21 . The elevation position information of the worktable 30 detected by the elevation position detector 61 is input to the elevation control section 53 of the controller 50 . The elevation position detector 61 detects the elevation position of the workbench 30 based on the amount of extension of the elevation cylinder 21. In addition, the elevation position detector 61 is composed of an optical or ultrasonic reflective distance sensor. A position may be detected. Alternatively, the height of the workbench 30 may be calculated by detecting the angle of the scissor link.

In the aerial work platform 1 configured in this way, a worker who tries to operate the traveling body 10 or the lifting device 20 can prevent the aerial work platform 1 from being used without permission or stolen. is equipped with an authentication system for performing authentication to determine whether the person is a proper person with the qualification. This authentication system will be described with additional reference to FIG.

As shown in FIG. 3, this authentication system includes an upper power switch 81, an upper authentication operation device 82, a lower power switch 83, a lower authentication operation device 84, an elevation position detector 61, a worker detector 85 and a controller 50 (especially An authentication control unit 55, a storage detection unit 56, and a boarding detection unit 57) are main components. Upper power switch 81 and upper authentication operating device 82 are provided on workbench 30 (for example, operating device 40 ), and lower power switch 83 and lower authentication operating device 84 are provided on traveling body 10 . A lower travel control lever (not shown) having the same structure as the travel control lever 41, a lower steering dial (not shown) having the same structure as the steering dial 42, and a lower elevating control lever having the same structure as the elevating control lever 43. (not shown) may be provided on the traveling body 10, and the lower power switch 83 and the lower authentication operation device 84 may be provided on the lower operating device.

The upper power switch 81 is formed, for example, in the shape of a button, and is operated to turn on the power (equivalent to an upper operation start operation) and to turn off the power (equivalent to an upper operation start operation). equivalent to a stop operation) is performed. When the upper power switch 81 is operated to turn on the power, power is supplied to the controller 50 from a predetermined power source (for example, battery B, but another battery may be used), and the controller 50 is turned on. When the controller 50 is powered on, the traveling body 10 and the lifting device 20 are ready to start operating. On the other hand, when the upper power switch 81 is operated to turn off the power, the power supply to the controller 50 is cut off and the controller 50 is turned off. When the power of the controller 50 is turned off, the traveling body 10 and the lifting device 20 are put into an operation stop state (inoperable state).

The lower power switch 83 can be rotated by, for example, inserting a predetermined key, and a power-on operation (corresponding to a lower operation start operation) in which the power is turned on from a reference position to a predetermined rotational position; In order to turn off the power, a power-off operation (corresponding to a lower operation stop operation) of returning to the reference position is performed. When the lower power switch 83 is turned on or off, the operation is the same as that of the upper power switch 81 . The lower power switch 83 is generally turned on at the start of work and turned off at the end of work. Further, the upper power switch 81 cannot be effectively operated unless the lower power switch 83 is operated to turn on the power (even if operated, the power cannot be turned on and off).

The upper authentication operation device 82 is configured, for example, with a ten-key input operation section for entering a predetermined password (for example, consisting of a multi-digit number), and outputs an authentication operation signal corresponding to the entered password to the controller 50. It is designed to Lower authentication operator 84 has the same configuration and function as upper authentication operator 82 . Note that the authentication operation (password input) is first required when the lower power switch 83 is turned on to start work. This request is made, for example, by lighting a predetermined lamp or outputting a sound.

The worker detector 85 is configured by, for example, an optical or ultrasonic reflective sensor installed on the workbench 30 . The worker detector 85 detects whether or not a worker is on the workbench 30 and outputs the detection signal to the controller 50 . As the worker detector 85, a load sensor that detects the load acting on the workbench 30 may be used.

The authentication control unit 55 of the controller 50 detects the password inputted from the authentication operation signal from the upper authentication operation device 82 or the lower authentication operation device 84, and determines whether or not the password matches a pre-registered proper password. Authenticate. When the entered password matches the proper password, information indicating proper authentication is stored, and operation of the traveling body 10 and the lifting device 20 is permitted. That is, the operation of the right travel motor 12a and the left travel motor 12b is permitted according to the operation state of the travel control lever 41, and the operation of the steering cylinder 17 is permitted according to the operation state of the steering dial 42. The operation of the lifting cylinder 21 is permitted according to the operating state of the operating lever 43 . Hereinafter, a state in which operation of the traveling body 10 and the lifting device 20 is permitted as a result of authentication is referred to as an operation permitted state. In the operation-permitted state, information of proper authentication (also referred to as proper authentication information) is stored.

On the other hand, if the entered password does not match the proper password, the authentication control unit 55 does not permit the running body 10 and the lifting device 20 to operate. That is, the operation of the steering cylinder 17 is restricted regardless of the operating state of the travel control lever 41, the operation of the steering cylinder 17 is restricted regardless of the operating state of the steering dial 42, and the elevation control lever 43 is operated regardless of the operating state. It regulates the operation of the cylinder 21 .

The storage detection unit 56 of the controller 50 detects whether or not the lifting device 20 is stored based on the detection signal from the lifting position detector 61 . Specifically, when the detection signal from the elevation position detector 61 indicates that the elevation position of the workbench 30 is the lowest position, it is detected that the elevation device 20 is retracted. This storage detection is performed sequentially, and the information as to whether or not it is stored is updated and stored each time.

A boarding detection unit 57 of the controller 50 detects whether or not a worker is boarding the workbench 30 based on the detection signal from the worker detector 85 . Specifically, when the detection signal from the worker detector 85 indicates that the worker is present, it is detected that the worker is on the workbench 30 . This boarding detection is performed successively, and the information as to whether or not the passenger is boarding is updated and stored each time.

In the conventional authentication system, authentication is performed each time the power is turned on. On the other hand, in the authentication system of this embodiment, when a predetermined condition is met, the previous authentication result (authentication suitability information) is not maintained and authentication is not performed again. clears the previous authentication result (authentication suitability information) and performs authentication again. This point will be described below with specific examples.

As a first example, in the operation permission state, the upper power switch 81 is operated to turn off the power and the power is turned off, and then the upper power switch 81 is operated to turn on the power to turn on the power (second 1), when these power-off operations and power-on operations are performed in a state in which the lifting device 20 is not stored, the authentication suitability information based on the previous authentication result is maintained, and authentication is performed again. Without doing it, it will be in the operation permission state. On the other hand, in the first case, when these power-off operations and power-on operations are performed while the lifting device 20 is stored, the authentication appropriateness information based on the previous authentication result is cleared, and authentication is performed again. I do. In addition, a certain time delay is provided between when the conditions for clearing the authentication suitability information based on the previous authentication result (also called "previous authentication suitability information") are met and when the actual clearing process is executed. good too. For example, when the upper power switch 81 is operated to turn off the power while the lifting device 20 is stored, the previous authentication is performed until a predetermined time (for example, an arbitrary time of 1 to 2 minutes) elapses. An off-delay operation may be set to maintain the suitability information and clear it when the predetermined time has elapsed. In this case, when the upper power switch 81 is operated to turn on the power before the predetermined time elapses, the operation permission state may be set without performing the authentication again.

If the upper power switch 81 is operated to turn off and turn on the power while the lifting device 20 is not in the retracted state, it means that work is in progress (for example, work on the workbench 30 is performed to prevent erroneous operation of the operation lever, etc.). Therefore, according to the first example, it is possible to reduce the number of authentication executions during work. On the other hand, when the lifting device 20 is in the retracted state, the operation of turning off the power and turning on the power by the upper power switch 81 means that the worker has been away from the workbench 30 (aerial work vehicle 1) for a while. Therefore, according to the first example, it is possible to prevent the traveling body 10 and the lifting device 20 from being used without permission when the worker is away from the workbench 30 . As a modification, in the first case, regardless of whether or not the lifting device 20 is in the retracted state, the authentication suitability information based on the previous authentication result is maintained, and the operation permitted state is maintained without performing the authentication again. You may make it so.

As a second example, in the operation permission state, the lower power switch 83 is turned off by turning off the power, and then the lower power switch 83 is turned on by turning on the power (second power switch 83). In the case of 2), the authentication suitability information based on the previous authentication result is cleared, and the authentication is performed again. In this second example as well, a certain time delay may be provided between the satisfaction of the conditions for clearing the previous authentication appropriateness information and the execution of the actual clearing process. For example, when the power is turned off by the lower power switch 83, the previous authentication appropriateness information is maintained until a predetermined time has passed, and an off-delay operation is set to clear it when the predetermined time has passed. may In this case, if the lower power switch 83 is operated to turn on the power before the predetermined time elapses, the operation permission state may be set without re-authentication.

The fact that the power is turned off and turned on by the lower power switch 83 means that the operator may be away from the workbench 30 (aerial work vehicle 1) after the work is finished. According to this, it is possible to prevent the traveling body 10 and the lifting device 20 from being used without permission in situations such as after the end of work.

As a third example (modification), in the operation permitted state, the power is turned off (whether by the upper power switch 81 or the lower power switch 83) to turn off the power, and then the power is turned on. (Whether by the upper power switch 81 or the lower power switch 83) is performed and the power is turned on (third case), regardless of whether the lifting device is in the retracted state or not. First, when a worker is on the workbench 30 both at the time of executing the power-off operation and at the time of executing the power-on operation, the result of the previous authentication is maintained and the operation is permitted without re-authentication. and On the other hand, in the third case, when the worker is not on the workbench 30 at least one of the power-off operation and the power-on operation, the authentication suitability information based on the previous authentication result Clear and authenticate again. Also in this third example, a certain time delay may be provided between when the conditions for clearing the previous authentication appropriateness information are satisfied and when the process of actually clearing the information is executed. For example, when the power is turned off by the lower power switch 83 while no worker is on the workbench 30, the previous authentication appropriateness information is maintained until a predetermined time elapses. An off-delay operation may be set to clear this when it has expired. In this case, if the lower power switch 83 is operated to turn on the power before the predetermined time elapses, the operation permission state may be set without re-authentication.

A worker on the workbench 30 means that work is in progress in many cases. Therefore, according to the third example, the number of authentication executions during work can be reduced. On the other hand, the fact that the worker is not on the workbench 30 means that the worker may be away from the workbench 30 (aerial work platform 1). It is possible to prevent the traveling body 10 and the lifting device 20 from being used without permission in a situation where the worker is away from.

Next, a second embodiment of the invention will be described. 4 and 5 show a self-propelled telescopic boom type aerial work vehicle equipped with an authentication system according to a second embodiment of the present invention. This aerial work vehicle 101 includes a traveling body 110 configured to be able to travel, a revolving body 120 provided above the traveling body 110 so as to be able to turn horizontally, and a boom provided above the revolving body 120 so as to be able to rise and fall. 130 and a workbench 140 provided at the tip of the boom 130 . A lifting device is configured by the revolving body 120 and the boom 130 .

The traveling body 110 has a pair of left and right front wheels 112 and rear wheels 113 rotatably provided on a traveling body frame 111 . The traveling body 110 has two front wheel traveling motors 116 that rotationally drive the left and right front wheels 112, respectively, and two rear wheel traveling motors 117 that rotationally drive the left and right rear wheels 113, respectively. The traveling body 110 rotates left and right front wheels 12 and rear wheels 13 by front and rear wheel traveling motors 116 and 117, respectively, and steers the front and rear wheels 12 and 13 to travel in a desired direction. configured to move. The left and right front wheels 112 may be steering wheels, and the left and right rear wheels 113 may be driving wheels driven by a travel motor.

A turning mechanism 115 is provided at the upper center of the traveling body frame 111 . The turning mechanism 115 includes an outer ring fixed to the traveling body frame 111 , an inner ring fixed to the turning body 120 and engaged with the outer ring, a turning motor 126 provided on the turning body 120 , and a turning body 20 . and a rotary center joint for supplying hydraulic oil from the hydraulic pump P provided to the front and rear wheel travel motors 116 and 117 provided on the travel body 110 . The revolving body 120 is attached to the traveling body frame 111 by a revolving mechanism 115 so as to be capable of horizontal revolving. .

A boom 130 is provided on the upper portion of the revolving body 120 so as to be vertically swingable (raising and lowering) by means of a pivot pin 134 . The boom 130 can be raised and lowered with respect to the swing body 120 by a boom hoisting cylinder 135 straddled between the swing body 120 and the boom 130 . The boom 130 is telescopically configured with a proximal boom 131 pivotally connected to the rotating body 120 and an intermediate boom 132 and a distal boom 133 telescopically combined with the proximal boom 131 . The boom 130 can be telescopically operated by a boom telescopic cylinder 136 provided within the boom 130 .

A vertical post 137 is provided at the tip of the tip boom 133 so as to be vertically swingable by means of a pivot pin. A workbench 140 is provided above the vertical post 137 so as to be rotatable (swingable) in the horizontal direction. An upper leveling cylinder (not shown) spans between the tip of tip boom 133 and vertical post 137 . A closed circuit is formed by a hydraulic hose between the upper leveling cylinder and a lower leveling cylinder (not shown) that is straddled between the base end boom 131 and the revolving body 120, and the lower leveling cylinder , the vertical post 137 is swung up and down with respect to the tip boom 133 so that the floor of the workbench 140 is always kept horizontal regardless of the hoisting angle of the boom 130. configured to hold state.

The workbench 140 is configured to be able to turn (swing) in the left-right direction with respect to the vertical post 137 by a swing motor 146 provided on the workbench 140 . The work table 140 has a substantially rectangular work floor 141 on which an operator can ride, and a handrail 142 erected around the work floor 141 . The workbench 140 is provided with an operating device 170 for carrying out traveling operation of the traveling body 110 and operating operation of the boom 130 .

As shown in FIG. 5, the operation device 170 performs a travel operation lever 171 for starting/stopping the traveling object 110 and switching between forward and backward movement, etc., and a steering operation of the traveling object 110 (steering of the front wheels 12 and the rear wheels 13). A steering dial 172, a turning operation lever 174 for turning operation of the turning body 120, a boom operation lever 175 for raising and lowering and telescoping the boom 130, and a swing operation for swinging (swinging) the work table 140. and a lever 176 . In the aerial work platform 101 , an operator gets on the workbench 140 and operates the travel control lever 171 and the steering dial 172 to move the vehicle to a desired work position. The work table 140 can be moved up and down to a desired high position by operating the and the like.

The left and right front wheels 112 and rear wheels 113 are interlocked with the steering dial 172 via a steering device (not shown). The steering device includes a front wheel steering mechanism connected to the left and right front wheels 112 , a front wheel steering cylinder 192 that drives the front wheel steering mechanism to change the steering angle of the left and right front wheels 112 , and a rear wheel steering mechanism connected to the left and right rear wheels 113 . a rear wheel steering cylinder 194 that drives the rear wheel steering mechanism to change the steering angle of the left and right rear wheels 113; a front wheel steering angle detector 196 that detects the steering angle of the left and right front wheels 112; and a rear wheel steering angle detector 197 for detecting the steering angle of the wheels 113 .

The traveling body 110 is provided with two front wheel brake cylinders 118 that respectively brake the rotation of the left and right front wheels 112 and two rear wheel brake cylinders 119 that respectively brake the rotation of the left and right rear wheels 113 .

The swing body 120 includes left and right front wheel drive motors 116 , left and right rear wheel drive motors 117 , left and right front wheel brake cylinders 118 , left and right rear wheel brake cylinders 119 , front wheel steering cylinders 192 , rear wheel steering cylinders 194 , and swing motors 126 . , the boom hoisting cylinder 135, the boom telescopic cylinder 136, the swinging motor 146, and the like, a hydraulic unit 180 is provided for supplying hydraulic fluid to these hydraulic actuators. The hydraulic unit 180 includes an engine E, a hydraulic pump P driven by the engine E, a hydraulic fluid tank T, and a control valve unit that controls the direction and amount of hydraulic fluid supplied from the hydraulic pump P to each hydraulic actuator. 185. The control valve unit 185 has a plurality of control valves V1 to V10 provided corresponding to each hydraulic actuator.

The revolving body 120 is provided with a controller 150 to which an operation signal is input from an operation device 170 provided on the workbench 140 . Upon receiving an operation signal from the operation device 170 , the controller 150 outputs a command signal corresponding to the operation signal to the control valve unit 185 of the hydraulic unit 180 . For example, when an operation signal is input from the turning operation lever 174 of the operating device 170, a command signal corresponding to the tilting operation direction and the amount of operation of the turning operation lever 174 is output to the turning control valve V7 of the control valve unit 185. The spool moving direction and the valve opening of the turning control valve V7 are controlled, and the turning motor 126 is driven to turn the turning body 120 with respect to the traveling body 110. FIG.

When an operation signal is input from the boom control lever 175, the controller 150 outputs a command signal corresponding to the tilting direction and amount of operation of the boom control lever 175 to the hoisting and telescopic control valves V8 and V9 of the control valve unit 185. to control the spool moving direction and valve opening of the hoisting and telescoping control valves V8 and V9, and drive the boom hoisting cylinder 135 and boom telescoping cylinder 36 to hoist and telescope the boom 130. Further, when an operation signal is input from the swing operation lever 176, the controller 150 outputs a command signal corresponding to the tilting operation direction and the operation amount of the swing operation lever 174 to the swing control valve V10 of the control valve unit 185. Then, the spool movement direction and valve opening of the swing control valve V10 are controlled, and the swing motor 146 is driven to swing the workbench 140 with respect to the vertical post 37. FIG.

In order to control the operations of the revolving structure 120, the boom 130, and the workbench 140 in this way, the aerial work vehicle 101 includes a revolving angle detector 161 for detecting the revolving angle of the revolving structure 120 with respect to the traveling structure 110, and a revolving structure 120 A boom hoisting angle detector 162 that detects the hoisting angle of the boom 30 relative to the boom 30, a boom extension amount detector 163 that detects the amount of extension of the boom 130, and a swing angle (turning angle) of the workbench 140 with respect to the boom 130 (vertical post 137). angle), and an inclination angle detector 165 for detecting the inclination angle of the traveling body frame 111 with respect to the horizontal plane. It's like The controller 150 constantly obtains and stores the movement position of the workbench 140 with respect to the traveling body 110 based on the detection signals from these detectors.

When an operation signal is input from the travel control lever 171, the controller 150 outputs a command signal corresponding to the operation signal to the front wheel travel control valve V1, the rear wheel travel control valve V2, and the front wheel brake control valve V5 of the travel control valve unit 185. and the rear wheel brake control valve V6 to control the rotation of the front wheel drive motors 116, 116 and the rear wheel drive motors 117, 117, that is, the drive of the front wheels 112, 112 and the rear wheels 113, 113.

When a steering signal is input from the steering dial 172, the controller 150 outputs a command signal corresponding to the steering signal to the front wheel steering control valve V3 and the rear wheel steering control valve V4, and detects the front wheel and rear wheel steering angle detector 196. , 197 is operated to steer the front wheels 112, 112 and the rear wheels 113, 113 by operating the front wheel steering cylinder 192 and the rear wheel steering cylinder 194 so that the steering angle detected by the steering signals becomes the target steering angle corresponding to the steering signal. .

Next, an authentication system for the aerial work vehicle 101 will be described with additional reference to FIG. As shown in FIG. 6, this authentication system includes an upper power switch 201, an upper authentication operation device 202, a lower power switch 203, a lower authentication operation device 204, a turning angle detector 161, a boom hoisting angle detector 162, and a boom extension amount. Detector 163, swing angle detector 164, tilt angle detector 165, operator detector 205, and controller 150 (in particular, authentication control unit 155, storage detection unit 156, and boarding detection unit 157) are the main components. Upper power switch 201 and upper authentication operating device 202 are provided on workbench 140 (for example, operating device 170 ), and lower power switch 203 and lower authentication operating device 204 are provided on revolving body 120 .

Like the upper power switch 81 of the first embodiment, the upper power switch 201 is formed in, for example, a button shape, and can be turned on and off. When the upper power switch 201 is turned on, power is supplied from a predetermined power source (not shown) to the controller 150 to turn on the controller 150, and the traveling body 110 and the lifting devices (swing body 120, boom 130 and workbench 140) are ready for operation. On the other hand, when the upper power switch 201 is operated to turn off the power, the power supply to the controller 150 is cut off and the controller 150 is turned off. It will stop working.

As with the lower power switch 83 of the first embodiment, the lower power switch 203 can be rotated by, for example, inserting a predetermined key. A power-off operation for returning to the position is performed. When the lower power switch 203 is turned on or off, the operation is the same as that of the upper power switch 201 . The lower power switch 203 is generally turned on at the start of work and turned off at the end of work. Further, the upper power switch 201 cannot be effectively operated unless the lower power switch 203 is operated to turn on the power (even if operated, the power cannot be turned on and off).

The upper authentication operation device 202, like the upper authentication operation device 82 of the first embodiment, includes, for example, a ten-key input operation unit for entering a predetermined password, and outputs an authentication operation signal corresponding to the entered password. It is designed to output to the controller 150 . Lower authentication operator 204 has the same configuration and function as upper authentication operator 202 . Note that the authentication operation (password input) is first requested when the lower power switch 203 is turned on to start work.

The worker detector 205 is configured by, for example, an optical or ultrasonic reflective sensor or a load sensor installed on the workbench 140 . The worker detector 205 detects whether or not a worker is on the workbench 140 and outputs the detection signal to the controller 150 .

The authentication control unit 155 of the controller 150 detects the password inputted from the authentication operation signal from the upper authentication operation device 202 or the lower authentication operation device 204, and determines whether or not the password matches a pre-registered proper password. Authenticate. Then, when the entered password matches the proper password, the proper authentication information is stored, and the traveling body 110 and the lifting device are permitted to operate. That is, the operation of the front wheel drive motor 116 and the rear wheel drive motor 117 is permitted according to the operating state of the drive control lever 171, and the front wheel steering cylinder 192 and the rear wheel steering cylinder 194 are permitted to operate according to the operating state of the steering dial 172. Allow to operate. In addition, operation of the swing motor 126 is permitted according to the operation state of the swing operation lever 174, and operation of the boom hoisting cylinder 135 and the boom telescopic cylinder 136 is permitted according to the operation state of the boom operation lever 175, Activation of the swing motor 146 is permitted according to the operating state of the swing operation lever 175 .

On the other hand, if the entered password does not match the proper password, the authentication control unit 155 does not permit the running body 110 and the lifting device to operate. That is, the operation of the front wheel drive motor 116 and the rear wheel drive motor 117 is restricted regardless of the operating state of the drive control lever 171, and the operation of the front wheel steering cylinder 192 and the rear wheel steering cylinder 194 is restricted regardless of the operating state of the steering dial 172. regulate. In addition, the operation of the boom hoisting cylinder 135 and the boom telescopic cylinder 136 is restricted regardless of the operation state of the swing operation lever 174, the operation of the swing motor 126 is restricted regardless of the operation state of the boom operation lever 175, and the swing operation lever is controlled. The operation of the swing motor 146 is restricted regardless of the operating state of 175.

The attitude detection unit 156 of the controller 150 raises and lowers based on detection signals from the turning angle detector 161, the boom hoisting angle detector 162, the boom extension amount detector 163, the swing angle detector 164, and the tilt angle detector 165. Detect whether the device is in a predetermined posture. The predetermined posture is set such that the operator can get on and off the workbench 140, such as a retracted posture when the boom 130 is retracted. This attitude detection is performed successively, and the information as to whether or not the lifting device is in a predetermined attitude is updated and stored each time.

A boarding detector 157 of the controller 150 detects whether or not a worker is boarding the workbench 140 based on the detection signal from the worker detector 205 . Specifically, when the detection signal from the worker detector 205 indicates that there is a worker, it is detected that the worker is on the workbench 140 . This boarding detection is performed successively, and the information as to whether or not the passenger is boarding is updated and stored each time.

As in the authentication system of the first embodiment, also in the authentication system of the present embodiment, when a predetermined condition is met, the previous authentication result (authentication suitability information) is not maintained and authentication is performed again. If a certain condition is satisfied, the previous authentication result (authentication suitability information) is cleared, and authentication is performed again. This point will be described below with specific examples.

As a basic example, in the operation permission state, the upper power switch 201 is turned off to turn off the power, and then the upper power switch 201 is turned on to turn on the power (α ), when these power-off operations and power-on operations are performed while the lifting device is not in the prescribed posture, the authentication aptitude information based on the previous authentication result must be maintained and authentication must be performed again. and the operation is permitted. On the other hand, in the above case α, when these power-off operations and power-on operations are performed with the lifting device in a predetermined posture, the authentication appropriateness information based on the previous authentication result is cleared, and authentication is performed again. . It should be noted that a certain time delay may be provided between the satisfaction of the conditions for clearing the previous authentication appropriateness information and the actual execution of the clearing process. For example, when the upper power switch 201 is operated to turn off the power while the lifting device is in a predetermined posture, the previous authentication suitability remains unchanged until a predetermined time (for example, an arbitrary time from 1 to 2 minutes) elapses. An off-delay operation may be set to maintain the information and clear it when the predetermined time has elapsed. In this case, when the upper power switch 201 is operated to turn on the power before the predetermined time elapses, the operation permission state may be set without performing the authentication again.

If the power is turned off and turned on by the upper power switch 201 while the lifting device is not in a predetermined posture, it means that work is in progress (for example, to prevent erroneous operation of the operation lever or the like, a worker on the workbench 140 is work with the power turned off temporarily), according to this example, it is possible to reduce the number of times authentication is performed during work. On the other hand, in a situation in which the lifting device is in a predetermined posture, the fact that the upper power switch 201 is turned off and turned on means that the worker has left the work table 140 (aerial work platform 101) once. Therefore, according to this example, it is possible to prevent the traveling body 110 and the lifting device from being used without permission when the worker is away from the workbench 140 . As a modification, in the case of α above, regardless of whether the lifting device is in a predetermined posture or not, the authentication suitability information based on the previous authentication result is maintained, and the operation permitted state is set without re-authentication. You may do so.

As the next example, in the operation permission state, the lower power switch 203 is operated to turn off the power, and then the lower power switch 203 is operated to turn on the power to turn on the power (β case) clears the authentication suitability information based on the previous authentication result, and performs authentication again. In this example as well, a certain time delay may be provided between the satisfaction of the conditions for clearing the previous authentication appropriateness information and the actual execution of the clearing process. For example, when the lower power switch 203 is operated to turn off the power, the previous authentication appropriateness information is maintained until a predetermined time elapses, and an off-delay operation is set to clear it when the predetermined time elapses. may In this case, when the lower power switch 203 is operated to turn on the power before the predetermined time elapses, the operation permission state may be set without performing authentication again.

The fact that the power is turned off and turned on by the lower power switch 203 means that the worker may be away from the workbench 140 (the vehicle for high lift work 101) after finishing the work. For example, it is possible to prevent the traveling body 110 and the lifting device from being used without permission in situations such as after the end of work.

As another example (modification), in the operation permission state, the power is turned off by turning off the power (regardless of whether it is by the upper power switch 201 or the lower power switch 203), and then the power is turned on ( It does not matter whether it is by the upper power switch 201 or the lower power switch 203), and the power is turned on (also referred to as γ), regardless of whether the lifting device is in the retracted state or not. First, when a worker is on the workbench 140 both at the time of executing the power-off operation and at the time of executing the power-on operation, the result of the previous authentication is maintained and the operation is permitted without re-authentication. and On the other hand, in the case of γ above, when the operator is not on the workbench 140 at least one of the power-off operation and the power-on operation, the authentication suitability information based on the previous authentication result is Clear and authenticate again. In this other example as well, a certain time delay may be provided between the satisfaction of the conditions for clearing the previous authentication suitability information and the actual execution of the clearing process. For example, when the power is turned off by the lower power switch 203 while no worker is on the workbench 140, the previous authentication appropriateness information is maintained until a predetermined period of time elapses. An off-delay operation may be set to clear this when it has expired. In this case, when the lower power switch 203 is operated to turn on the power before the predetermined time elapses, the operation permission state may be set without performing authentication again.

Since a worker on the workbench 140 often indicates that the worker is working, according to this example, it is possible to reduce the number of authentication executions during the work. On the other hand, the fact that the worker is not on the workbench 140 means that the worker may be away from the workbench 140 (aerial work vehicle 101). Unauthorized use of the traveling body 110 and the lifting device can be prevented when the person is away.

Although preferred embodiments according to the present invention have been described above, the scope of the present invention is not limited to those shown in the above-described embodiments. For example, in the above-described embodiments, password authentication using a ten-key operation input device is exemplified as an authentication method, but the authentication method is not limited to a specific one. Various authentication methods can be used, such as authentication using a contact-type ID card, authentication using a barcode or QR code (registered trademark) reading method, and authentication using wireless communication such as RFID or an electronic key using a mobile terminal. .

In the above-described first embodiment, the scissors link type aerial work vehicle 1 is shown as the vertical lift type aerial work vehicle to which the present invention is applied, but it is also applicable to a mast type aerial work vehicle. . again,
In the above-described second embodiment, the telescopic boom type aerial work vehicle 101 is shown as the boom type aerial work vehicle to which the present invention is applied, but it is also applicable to a bending boom type aerial work vehicle. . Moreover, the present invention can also be applied to non-self-propelled aerial work vehicles.

1,101 aerial work vehicle 10, 110 running body 20 lifting device 30, 140 workbench 50, 150 controller 55, 155 authentication control section 56 storage detection section 57, 157 boarding detection section 120 revolving body 130 boom 156 attitude detection section

Claims (7)

a traveling body capable of traveling;
a lifting device provided on the traveling body so as to be able to move up and down;
a workbench supported by the lifting device;
an operation operation device for performing an operation start operation for starting the operation of the lifting device and an operation stopping operation for stopping the operation of the lifting device;
an authentication control device that performs authentication based on predetermined authentication information when an operation start operation is performed by the operation operation device, and permits operation of the lifting device if the authentication information is correct. An authentication system for an aerial work platform,
A storage detection device that detects whether the lifting device is in a storage state,
The authentication control device,
In a situation where the operation of the lifting device is permitted based on the result of the authentication, the operation stop operation is performed by the operation operation device to stop the operation of the lifting device, and then the operation start operation is performed by the operation operation device. is done,
Based on the detection result by the storage detection device,
when the lifting device is not in the retracted state, the result of the authentication is maintained and the operation of the lifting device is permitted without performing the authentication again;
An authentication system for a vehicle for work at height, characterized in that, when the lifting device is in a retracted state, the result of the authentication is cleared and the authentication is performed again. a traveling body capable of traveling;
a lifting device provided on the traveling body so as to be able to move up and down;
a workbench supported by the lifting device;
an operation operation device for performing an operation start operation for starting the operation of the lifting device and an operation stopping operation for stopping the operation of the lifting device;
an authentication control device that performs authentication based on predetermined authentication information when an operation start operation is performed by the operation operation device, and permits operation of the lifting device if the authentication information is correct. An authentication system for an aerial work platform,
A posture detection device that detects whether the lifting device is in a predetermined posture,
The authentication control device,
In a situation where the operation of the lifting device is permitted based on the result of the authentication, the operation stop operation is performed by the operation operation device to stop the operation of the lifting device, and then the operation start operation is performed by the operation operation device. is done,
Based on the detection result by the posture detection device,
when the lifting device is not in the predetermined posture, maintaining the result of the authentication and permitting operation of the lifting device without performing the authentication again;
An authentication system for a vehicle for work at height, wherein the authentication result is cleared and the authentication is performed again when the lifting device is in the predetermined posture. a traveling body capable of traveling;
a lifting device provided on the traveling body so as to be able to move up and down;
a workbench supported by the lifting device;
an operation operation device for performing an operation start operation for starting the operation of the lifting device and an operation stopping operation for stopping the operation of the lifting device;
an authentication control device that performs authentication based on predetermined authentication information when an operation start operation is performed by the operation operation device, and permits operation of the lifting device if the authentication information is correct. An authentication system for an aerial work platform,
A boarding detection device that detects whether or not a worker is boarding the workbench,
The authentication control device,
In a situation where the operation of the lifting device is permitted based on the result of the authentication, the operation stop operation is performed by the operation operation device to stop the operation of the lifting device, and then the operation start operation is performed by the operation operation device. is done,
Based on the detection result by the boarding detection device,
When a worker is on the workbench at both the time of execution of the operation stop operation by the operation operation device and the time of execution of the next operation start operation, the result of the authentication is maintained and the authentication is not performed again. allow the lifting device to operate,
When an operator is not on the workbench at least one of when the operation stop operation is executed by the operation operation device and when the next operation start operation is executed, the result of the authentication is cleared and the authentication is performed again. An authentication system for an aerial work vehicle characterized by comprising: a traveling body capable of traveling;
a lifting device provided on the traveling body so as to be able to move up and down;
a workbench supported by the lifting device;
an operation operation device for performing an operation start operation for starting the operation of the lifting device and an operation stopping operation for stopping the operation of the lifting device;
an authentication control device that performs authentication based on predetermined authentication information when the operation start operation is performed, and permits operation of the lifting device if the authentication information is correct. an authentication system for
The actuation operation device includes an upper actuation operation device provided on the workbench and a lower actuation operation device provided on the traveling body,
The authentication control device,
In a situation where the operation of the lifting device is permitted based on the result of the authentication,
When the operation stop operation is performed by the upper operation device to stop the operation of the lifting device and then the operation start operation is performed by the upper operation device, the result of the authentication is maintained. permitting the operation of the lifting device without performing the authentication again;
When the operation stop operation is performed by the lower operation device to stop the operation of the lifting device and then the operation start operation is performed by the lower operation device, the result of the authentication is cleared. An authentication system for an aerial work vehicle, characterized in that it is configured to perform the authentication again. 3. The authentication system for a vehicle for high-elevation work according to claim 2, wherein the predetermined posture is a posture in which a worker can get on and off the work platform. 6. An authentication system for a vehicle for work at height according to claim 1, wherein said actuation operation device is an upper actuation operation device provided on said workbench. 4. The authentication system for a vehicle for high lift work according to claim 3, wherein the actuation operation device is a lower actuation operation device provided on the traveling body.

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