An automatic power-on and power-off control system and control method for the bucket part of an insulated boom truck

Abstract

The present invention relates to a control system and a control method for automatic power-on and power-off of the bucket part of an insulated boom truck, belonging to the field of aerial work vehicles. The present invention includes a dual hydraulic pump, a hydraulic power generation solenoid valve, a hydraulic power generation motor, a generator, a chassis battery, a main operation power switch, a chassis controller, a bucket controller and a bucket battery. Its structural characteristics are as follows: it further includes a pressure relay, a power holding relay and a forced power switch. The main operation power switch is electrically connected to the positive electrode of the chassis battery and the V+ terminal of the chassis controller respectively. The negative electrode of the chassis battery is electrically connected to the V- terminal of the chassis controller. The negative terminal of the coil of the hydraulic power generation solenoid valve is electrically connected to the negative electrode of the chassis battery. The positive terminal of the coil of the hydraulic power generation solenoid valve is electrically connected to the DO terminal of the chassis controller. The hydraulic power generation solenoid valve is connected to the dual hydraulic pump and the hydraulic power generation motor through pipelines respectively. The hydraulic power generation motor is mechanically connected to the generator.

Description

Technical Field

[0001] The present invention relates to a control system and a control method for automatically turning on and off the power of the bucket part of an insulating boom truck, and belongs to the field of aerial work vehicles. Background Art

[0002] Insulating boom trucks have long been widely used in the field of live working in the power system; the most common working scenarios of insulating boom trucks are as follows: after the vehicle drives to the working location, the operator first turns on the main operating power of the insulating boom truck at the chassis part and connects the engine power take-off; after the outriggers are reliably supported, the operator first goes to the bucket part of the insulating boom truck to turn on the bucket power. After the bucket controller communicates normally with the chassis controller, the electric control system of the insulating boom truck starts to work normally; then the operator operates the boom mechanism at the chassis part, lowers the working bucket to the ground, and after loading the working tools, the operator enters the bucket of the insulating boom truck and unfolds the boom truck to start live working.

[0003] After the operation is completed, the operator first retracts each mechanism of the insulating boom truck, then turns off the bucket power, and finally turns off the main operating power of the insulating boom truck at the chassis part; if the operator forgets to turn off the bucket power, the bucket battery may discharge for a long time until the bucket battery runs out of power completely; when the insulating boom truck is used again, due to the exhausted power of the bucket battery, the bucket controller cannot work normally, resulting in the inability to automatically charge the bucket battery using the hydraulic power generation function; at this time, only manual forced hydraulic power generation or replacement of the bucket battery can be carried out, both of which consume a long operation time and affect the normal operation of the insulating boom truck.

[0004] The technical problems existing in the insulating boom trucks in the prior art are as follows: 1. Before the insulating boom truck starts operating, the operator needs to climb onto the working bucket and turn on the bucket power first to make the electric control system of the insulating boom truck work normally, which increases the workload of the operator; 2. After the operation of the insulating boom truck is completed, if the operator forgets to turn off the bucket power switch, the battery will continue to discharge until the power is exhausted, affecting the normal operation of the insulating boom truck next time. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above-mentioned deficiencies existing in the prior art, and to provide a control system and a control method for automatically turning on and off the power of the bucket part of an insulating boom truck with reasonable design.

[0006] The technical solution adopted by the present invention to solve the above problems is as follows: The control system for automatic power-on and power-off of the bucket part of an insulated boom truck includes a double hydraulic pump, a hydraulic power generation solenoid valve, a hydraulic power generation motor, a generator, a chassis battery, a main operation power switch, a chassis controller, a bucket controller, and a bucket battery. Its structural features are as follows: It also includes a pressure relay, a power holding relay, and a forced power switch. The main operation power switch is electrically connected to the positive pole of the chassis battery and the V+ terminal of the chassis controller respectively. The negative pole of the chassis battery is electrically connected to the V- terminal of the chassis controller. The negative end of the coil of the hydraulic power generation solenoid valve is electrically connected to the negative pole of the chassis battery. The positive end of the coil of the hydraulic power generation solenoid valve is electrically connected to the DO terminal of the chassis controller. The hydraulic power generation solenoid valve is connected to the double hydraulic pump and the hydraulic power generation motor through pipelines respectively. The hydraulic power generation motor is mechanically connected to the generator. The bucket battery is electrically connected to the generator. The chassis controller is communicatively connected to the bucket controller. The pressure relay is connected to the hydraulic power generation motor through a pipeline. The two ends of the normally open contact of the pressure relay are electrically connected to the positive pole of the bucket battery and the positive pole of the coil of the power holding relay respectively. The positive pole of the coil of the power holding relay is electrically connected to the DO terminal of the bucket controller. The negative pole of the coil of the power holding relay is electrically connected to the negative pole of the bucket battery. The normally open contact of the power holding relay is electrically connected to the positive pole of the bucket battery and the V﹢ terminal of the bucket controller respectively. The two ends of the forced power switch are electrically connected to the V﹢ terminal of the bucket controller and the positive pole of the bucket battery respectively.

[0007] Further, the chassis controller is communicatively connected to the bucket controller and can achieve two-way communication. The communication connection can be realized by using fiber optic communication technology or wireless communication technology to achieve data communication between the two controllers.

[0008] Further, the double hydraulic pump includes a first hydraulic pump and a second hydraulic pump. The first hydraulic pump is connected to the engine power take-off device and is used for hydraulic power generation of the bucket part. The second hydraulic pump is used for mechanism operation.

[0009] Further, the double hydraulic pump, the hydraulic power generation solenoid valve, the hydraulic power generation motor, the generator, and the pressure relay constitute a hydraulic system; the hydraulic power generation solenoid valve, the generator, the pressure relay, the chassis battery, the main operation power switch, the chassis controller, the bucket controller, the power holding relay, the bucket battery, and the forced power switch constitute an electric control system.

[0010] Further, another technical object of the present invention is to provide a control method for automatic power-on and power-off of the bucket part of an insulated boom truck.

[0011] The above technical object of the present invention is achieved through the following technical solutions.

[0012] A control method for automatically turning on and off the power of the bucket part of an insulated boom truck, characterized in that the control method is as follows:

[0013] a) Realization of the automatic power-on function of the bucket part of the insulated boom truck: When the insulated boom truck starts to work, turn on the main operation power switch, and the chassis controller is powered on. After the chassis controller detects the engine running, when the first power supply flag is 0, the chassis controller controls the hydraulic power generation solenoid valve to be powered on for 30 seconds. The hydraulic power drives the hydraulic power generation motor to rotate through the hydraulic power generation solenoid valve. The pressure at the inlet of the hydraulic power generation motor is higher than the set pressure of the pressure relay, and the contacts of the pressure relay close, and the bucket controller is powered on; after the communication between the bucket controller and the chassis controller is established and the communication is normal, the DO terminal of the bucket controller outputs a high level, and the power holding relay is powered on. The contacts of the power holding relay are closed to continuously supply power to the bucket controller; after the hydraulic power generation solenoid valve is powered on for 30 seconds, the first power supply flag is set to 1 at this time to prevent the chassis controller from entering the program of "the hydraulic power generation solenoid valve is powered on for 30 seconds" again;

[0014] b) Realization of the automatic power-off function of the bucket part of the insulated boom truck: After the insulated boom truck finishes working, just turn off the main operation power switch. At this time, the chassis controller is powered off, and the hydraulic power generation solenoid valve must stop operating. At this time, the contacts of the pressure relay are disconnected; when the bucket controller detects that the communication with the chassis controller is abnormal, after a delay of 10 seconds, the DO terminal of the bucket controller outputs a low level, and the bucket controller controls the power holding relay to be powered off. At this time, the bucket automatically cuts off the power supply of the bucket controller.

[0015] Further, c) The bucket part of the insulated boom truck can turn on the power supply of the bucket controller by operating the forced power switch. When the hydraulic power generation system is abnormal, the pressure relay fails, and the communication system is abnormal, the power supply of the bucket controller can be forcibly turned on to ensure that the insulated boom truck can operate normally and troubleshoot faults.

[0016] Compared with the prior art, the present invention has the following advantages: By installing a pressure relay and a power holding relay, this control system and control method can automatically turn on the power of the bucket during the operation of the insulated boom truck and automatically turn off the power of the bucket after the insulated boom truck completes the operation; it simplifies the operation process when the electric control system of the insulated boom truck is working normally, and at the same time overcomes the failure of the battery power of the bucket to be exhausted due to the operator forgetting to turn off the power switch of the bucket.

[0017] This control system and control method add a pressure relay and a power holding relay to the bucket of the original control system of the insulated boom truck, and implement a series of control logics in the chassis controller and the bucket controller (see the specific implementation method) to achieve the automatic turning on and off of the power of the bucket.

[0018] When the insulated boom truck starts working, turn on the main operation power switch. After the chassis controller is powered on and the engine is running, turn on the hydraulic power generation solenoid valve to control the continuous operation of the hydraulic power generation function for 30 seconds. At this time, the pressure relay detects that the hydraulic power generation system is working and the contact closes, connecting the power supply of the boom controller. After the normal communication is established between the boom controller and the chassis controller, the power supply holding relay of the boom controller acts, so as to continuously supply power to the boom controller, realizing the function of automatically turning on the boom power supply.

[0019] When the insulated boom truck stops working, turn off the main operation power switch. After the chassis controller is powered off, if the normal communication between the boom controller and the chassis controller cannot be established for 10 seconds, the power supply holding relay of the boom controller is powered off, thereby cutting off the power supply of the boom controller, realizing the function of automatically turning off the boom power supply.

[0020] Change the original self-holding type power switch to a self-resetting forced power switch. When the hydraulic power generation system is abnormal, the pressure relay fails, or the communication system is abnormal, the power supply of the boom controller can be forcibly turned on to ensure that the insulated boom truck can operate normally and troubleshoot faults. Brief Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the connection relationship of the hydraulic system of the embodiment of the present invention.

[0022] Figure 2 It is a schematic diagram of the connection relationship of the electric control system of the embodiment of the present invention.

[0023] Figure 3 It is a schematic flowchart of the chassis control program of the embodiment of the present invention.

[0024] Figure 4 It is a schematic flowchart of the boom control program of the embodiment of the present invention.

[0025] In the figure: double hydraulic pump 1, hydraulic power generation solenoid valve 2, hydraulic power generation motor 3, generator 4, pressure relay 5, chassis battery 6, main operation power switch 7, chassis controller 8, boom controller 9, power supply holding relay 10, boom battery 11, forced power switch 12, communication optical cable 13.

[0026] No. 1 hydraulic pump A, No. 2 hydraulic pump B, engine power take-off device PTO. Detailed Embodiment

[0027] The present invention will be further described in detail below with reference to the drawings and through embodiments. The following embodiments are explanations of the present invention and the present invention is not limited to the following embodiments.

[0028] Embodiment

[0029] SeeFigures 1 to 4 As shown, it should be noted that the structures, proportions, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have technical substantial significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present invention. At the same time, if terms such as "upper", "lower", "left", "right", "middle", and "one" are cited in this specification, they are only for the convenience of clear narration and are not used to limit the scope for the implementation of the present invention. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope within which the present invention can be implemented.

[0030] The control system for automatically turning on and off the power of the bucket part of the insulated boom truck in this embodiment includes a double - acting hydraulic pump 1, a hydraulic power generation solenoid valve 2, a hydraulic power generation motor 3, a generator 4, a pressure relay 5, a chassis battery 6, a main operation power switch 7, a chassis part controller 8, a bucket part controller 9, a bucket battery 11, a power holding relay 10, and a forced power switch 12.

[0031] The double - acting hydraulic pump 1, the hydraulic power generation solenoid valve 2, the hydraulic power generation motor 3, the generator 4, and the pressure relay 5 in this embodiment constitute a hydraulic system; the hydraulic power generation solenoid valve 2, the generator 4, the pressure relay 5, the chassis battery 6, the main operation power switch 7, the chassis part controller 8, the bucket part controller 9, the power holding relay 10, the bucket battery 11, and the forced power switch 12 constitute an electrical control system.

[0032] That is to say, the double - acting hydraulic pump 1 and the hydraulic power generation solenoid valve 2 constitute the chassis part hydraulic system, and the hydraulic power generation motor 3, the generator 4, and the pressure relay 5 constitute the bucket part hydraulic system; the hydraulic power generation solenoid valve 2, the chassis battery 6, the main operation power switch 7, and the chassis part controller 8 constitute the chassis part electrical control system, and the generator 4, the pressure relay 5, the bucket part controller 9, the power holding relay 10, the bucket battery 11, and the forced power switch 12 constitute the bucket part electrical control system.

[0033] The double - acting hydraulic pump 1 in this embodiment is mechanically connected to the engine power take - off device PTO. When the engine runs, it drives the double - acting hydraulic pump 1 to run and provide hydraulic power. The double - acting hydraulic pump 1 includes a first hydraulic pump A and a second hydraulic pump B. The first hydraulic pump A is connected to the engine power take - off device PTO to provide power for the bucket part hydraulic power generation function, and the second hydraulic pump B is used to provide power for the movement of the insulated boom truck mechanism.

[0034] In this embodiment, the chassis battery 6, the main operation power switch 7, and the chassis controller 8 are all installed in the chassis part; the main operation power switch 7 is electrically connected to the positive electrode of the chassis battery 6 and the V+ terminal of the chassis controller 8 respectively, and the negative electrode of the chassis battery 6 is electrically connected to the V- terminal of the chassis controller 8. When the insulating boom truck starts to operate, the main operation power switch 7 is closed, and at this time, the chassis controller 8 is powered on and starts to work.

[0035] In this embodiment, the hydraulic power generation solenoid valve 2 is installed in the chassis part; the hydraulic power generation solenoid valve 2 is connected to the first hydraulic pump A in the double hydraulic pump 1 and the hydraulic power generation motor 3 through pipelines respectively. The negative terminal of the coil of the hydraulic power generation solenoid valve 2 is electrically connected to the negative electrode of the chassis battery 6, and the positive terminal of the coil of the hydraulic power generation solenoid valve 2 is electrically connected to the DO terminal of the chassis controller 8. When the DO terminal of the chassis controller 8 outputs a high level, when the hydraulic power generation solenoid valve 2 is powered on and works, it can transmit the power of hydraulic power generation to the hydraulic power generation motor 3.

[0036] In this embodiment, the bucket battery <11>, the bucket controller 9, the hydraulic power generation motor 3, and the generator 4 are all installed in the bucket part; the hydraulic power generation motor 3 is mechanically connected to the generator 4, and the bucket battery <11> is electrically connected to the generator 4. When the hydraulic power generation motor 3 rotates, it drives the generator 4 to rotate, and the generator 4 can charge the bucket battery <11>. After the bucket controller 9 and the chassis controller 8 are both powered on and working, fiber optic communication technology or wireless communication technology can be used to realize two-way data communication between the two controllers. As Figure 2 shown, the chassis controller 8 and the bucket controller 9 are connected through a communication optical cable <13>.

[0037] In this embodiment, the pressure relay 5 is installed in the bucket part; the pressure relay 5 is connected to the hydraulic power generation motor 3 through a pipeline. When the pressure at the inlet of the hydraulic power generation motor 3 is higher than the set pressure of the pressure relay 5, the normally open contact of the pressure relay 5 closes. The two ends of the normally open contact of the pressure relay 5 are respectively electrically connected to the positive electrode of the bucket battery <11> and the positive electrode of the coil of the power supply holding relay <10>.

[0038] In this embodiment, the power supply holding relay <10> is installed in the bucket part; the positive electrode of the coil of the power supply holding relay <10> is respectively electrically connected to the contact of the pressure relay 5 and the DO terminal of the bucket controller 9, the negative electrode of the coil of the power supply holding relay <10> is electrically connected to the negative electrode of the bucket battery <11>, and the normally open contact of the power supply holding relay <10> is respectively electrically connected to the positive electrode of the bucket battery <11> and the V﹢ terminal of the bucket controller 9. When the normally open contact of the pressure relay 5 closes or the DO terminal of the bucket controller 9 outputs a high level, the power supply holding relay <10> is powered on and works, the normally open contact of the power supply holding relay <10> closes, and the bucket battery <11> can supply power to the bucket controller 9.

[0039] The forced power switch 12 in this embodiment is a self-resetting power switch. The two ends of the forced power switch 12 are respectively electrically connected to the V+ terminal of the bucket controller 9 and the positive pole of the bucket battery 11. Continuously pulling the forced power switch 12 can forcibly supply power to the bucket controller 9.

[0040] The control method for automatic power on and off of the bucket of the insulated boom truck in this embodiment is as follows:

[0041] a) Realization of the automatic power-on function of the bucket of the insulated boom truck: When the insulated boom truck starts to work, the operator turns on the main operation power switch 7, and the chassis controller 8 is powered on and operates. After the chassis controller 8 detects that the engine is running, and when the first power supply flag is 0, the chassis controller 8 controls the hydraulic power generation solenoid valve 2 to be powered on for 30 seconds. The hydraulic power drives the hydraulic power generation motor 3 to rotate through the hydraulic power generation solenoid valve 2. The pressure at the inlet of the hydraulic power generation motor 3 is higher than the set pressure of the pressure relay 5, and the contact of the pressure relay 5 closes, and the bucket controller 9 is powered on. After the communication between the bucket controller 9 and the chassis controller 8 is established and the communication is normal, the DO terminal of the bucket controller 9 outputs a high level, and the power holding relay 10 is powered on and operates. The contact of the power holding relay 10 is closed to continuously supply power to the bucket controller 9. After the hydraulic power generation solenoid valve 2 is powered on for 30 seconds, the first power supply flag is set to 1 at this time to prevent the chassis controller 8 from entering the program of "the hydraulic power generation solenoid valve is powered on for 30 seconds" again. In the original bucket hydraulic power generation program, the bucket controller 9 controls the chassis controller 8 according to the battery level of the bucket battery 11, so as to control whether the hydraulic power generation solenoid valve 2 operates. However, at this time, it will not affect the power supply of the bucket controller 9. As Figure 3 shown, the chassis control program is the content inside the dotted box in the figure.

[0042] b) Realization of the automatic power-off function of the bucket of the insulated boom truck: After the insulated boom truck finishes working, the operator only needs to turn off the main operation power switch 7. At this time, the chassis controller 8 is powered off, and the hydraulic power generation solenoid valve 2 must stop operating. At this time, the contact of the pressure relay 5 disconnects. When the bucket controller 9 detects that the communication with the chassis controller 8 is abnormal, after a delay of 10 seconds, the DO terminal of the bucket controller 9 outputs a low level, and the bucket controller 9 controls the power holding relay 10 to be powered off. At this time, the bucket automatically cuts off the power supply of the bucket controller 9. As Figure 4 shown, the bucket control program is the content inside the dotted box in the figure.

[0043] c) The bucket of the insulated boom truck can supply power to the bucket controller 9 by operating the forced power switch 12. When the hydraulic power generation system is abnormal, the pressure relay fails, or the communication system is abnormal, the power supply of the bucket controller 9 can be forcibly connected to ensure that the insulated boom truck can operate normally and troubleshoot faults.

[0044] In addition, it should be noted that for the specific embodiments described in this specification, the shapes of the components, the names taken, etc. can be different. The above content described in this specification is only an illustrative example of the structure of the present invention. Any equivalent changes or simple changes made to the structure, features, and principles according to the inventive concept of the present invention are included within the protection scope of the present invention. Those skilled in the technical field to which the present invention pertains can make various modifications, supplements, or use similar methods for substitution to the specific embodiments described, as long as they do not deviate from the structure of the present invention or exceed the scope defined by this claims, they should all fall within the protection scope of the present invention.

Claims

1. A control system for automatically turning on and off the power of the bucket of an insulating boom truck, comprising a double hydraulic pump (1), a hydraulic power generation solenoid valve (2), a hydraulic power generation motor (3), a generator (4), a chassis battery (6), a main operation power switch (7), a chassis controller (8), a bucket controller (9), and a bucket battery (11), characterized in that: It also includes a pressure relay (5), a power supply holding relay (10) and a forced power switch (12), wherein the main operation power switch (7) is electrically connected to the positive pole of the chassis battery (6) and the V+ end of the chassis controller (8), the negative pole of the chassis battery (6) is electrically connected to the V- end of the chassis controller (8), the negative end of the coil of the hydraulic power generation solenoid valve (2) is electrically connected to the negative pole of the chassis battery (6), the positive end of the coil of the hydraulic power generation solenoid valve (2) is electrically connected to the DO end of the chassis controller (8), the hydraulic power generation solenoid valve (2) is respectively connected to the dual hydraulic pump (1) and the hydraulic power generation motor (3) pipeline, the hydraulic power generation motor (3) is mechanically connected to the generator (4), the bucket battery (11) is electrically connected to the generator (4), and the chassis The bucket controller (8) is communicatively connected to the bucket controller (9), the pressure relay (5) is connected to the hydraulic generator motor (3) pipeline, the two ends of the normally open contact of the pressure relay (5) are electrically connected to the positive pole of the bucket battery (11) and the positive pole of the coil of the power supply holding relay (10), the positive pole of the coil of the power supply holding relay (10) is electrically connected to the DO end of the bucket controller (9), the negative pole of the coil of the power supply holding relay (10) is electrically connected to the negative pole of the bucket battery (11), the normally open contact of the power supply holding relay (10) is electrically connected to the positive pole of the bucket battery (11) and the V+ end of the bucket controller (9), and the two ends of the forced power switch (12) are electrically connected to the V+ end of the bucket controller (9) and the positive pole of the bucket battery (11).

2. The control system for automatic power on and off of the bucket section of the insulated bucket arm vehicle according to claim 1 is characterized in that: The chassis controller (8) is communicatively connected to the bucket controller (9), and two-way communication can be achieved.

3. The control system for automatically turning on and off the power of the bucket part of the insulated boom truck according to claim 1, characterized in that: The double hydraulic pump (1) comprises a No. 1 hydraulic pump (A) and a No. 2 hydraulic pump (B), wherein the No. 1 hydraulic pump (A) is connected to an engine power take-off (PTO), and the No. 2 hydraulic pump (B) is used for mechanism actuation.

4. The control system for automatically turning on and off the power of the bucket of the insulated boom truck according to claim 1, wherein: The double hydraulic pump (1), the hydraulic power generation solenoid valve (2), the hydraulic power generation motor (3), the generator (4) and the pressure relay (5) constitute a hydraulic system; the hydraulic power generation solenoid valve (2), the generator (4), the pressure relay (5), the chassis battery (6), the main operation power switch (7), the chassis controller (8), the bucket controller (9), the power holding relay (10), the bucket battery (11) and the forced power switch (12) constitute an electric control system.

5. A method for automatically turning on and off the power of an insulated bucket truck, the method being implemented by using the control system according to any one of claims 1 to 4, characterized in that: The control method is as follows: a) Implementation of the automatic power-on function of the bucket section of the insulated bucket truck: When the insulated bucket truck starts working, the main operating power switch (7) is turned on, and the chassis controller (8) is powered on. After the chassis controller (8) detects that the engine is running, when the first power supply mark is 0, the chassis controller (8) controls the hydraulic power generation solenoid valve (2) to be powered on for 30 seconds. The hydraulic power drives the hydraulic power generation motor (3) to rotate through the hydraulic power generation solenoid valve (2). The pressure at the inlet of the hydraulic power generation motor (3) is higher than the set pressure of the pressure relay (5). The pressure relay ( 5) The contacts are closed, and the bucket controller (9) is powered on; after the communication between the bucket controller (9) and the chassis controller (8) is established and normal communication is established, the DO terminal of the bucket controller (9) outputs a high level, the power supply holding relay (10) is powered on, and the contacts of the power supply holding relay (10) are connected, and the bucket controller (9) is continuously powered; after the hydraulic power generation solenoid valve (2) is powered on for 30 seconds, the first power supply flag is set to 1 to prevent the chassis controller (8) from entering the "hydraulic power generation solenoid valve powered on for 30 seconds" program again; b) Implementation of the automatic power-off function of the bucket section of the insulated bucket truck: After the insulated bucket truck finishes working, it only needs to turn off the main operating power switch (7). At this time, the chassis controller (8) is powered off, the hydraulic power generation solenoid valve (2) must stop operating, and the contacts of the pressure relay (5) are disconnected; when the bucket controller (9) detects that the communication with the chassis controller (8) is abnormal, after a delay of 10 seconds, the DO terminal of the bucket controller (9) outputs a low level, and the bucket controller (9) controls the power supply holding relay (10) to power off. At this time, the bucket automatically cuts off the power supply of the bucket controller (9).

6. The method for controlling automatic power on and off of the bucket portion of an insulated bucket truck according to claim 5, characterized in that: c) The bucket of the insulated boom truck can be connected to the power supply of the bucket controller (9) by operating the forced power switch (12). When the hydraulic power generation system is abnormal, the pressure relay fails, or the communication system is abnormal, the power supply of the bucket controller (9) can be forced to be connected to ensure that the insulated boom truck can operate normally and troubleshoot.

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