Quick power-off and power-on device for power distribution hot-line work

Abstract

The invention discloses a quick power-off and power-on device for power distribution hot-line work, and relates to the technical field of power distribution hot-line work. The objective of the invention is to reduce the time of drainage wire release and lap joint so as to improve the efficiency of power distribution hot-line work. The device comprises a fixed frame, three groups of upper wire seats, three groups of lower wire seats, and a wiring contact assembly and an on-off driving assembly which are positioned between the upper wire seats and the lower wire seats. The upper wire seat is provided with a three-phase first drainage wire and is connected with a main cable; and the lower wire seat is provided with a three-phase second drainage wire which is detachably connected with the bypass cable. Through the on-off driving assembly, rapid switching of current paths among the three-phase drainage wires can be achieved, and then connection and disconnection of the main cable and the bypass cable are controlled. A stepping motor and a control circuit are arranged in the on-off driving assembly, so that connection and disconnection of the drainage wire can be efficiently carried out; generally speaking, the device significantly improves the convenience and safety of hot-line work through optimizing the structure and the technical means.

Description

Technical Field

[0001] The present invention relates to the technical field of live distribution work, and in particular to a fast power stopping and restoring device for live distribution work. Background Art

[0002] As live distribution work occupies an increasingly important position in the power supply system and the number of operations has increased significantly, projects that cooperate with power outage operations are facing some prominent problems, especially under the influence of the "delayed power outage and restoration assessment" working mechanism. The following is a specific analysis of the current situation:

[0003] 1. Restrictions on the work schedule: In order to avoid peak power consumption, live distribution work must wait until the drainage line is removed in the morning before live distribution work is carried out, which means that the start of the intermediate construction work is forced to be postponed. This link in the morning directly affects the start time of the work, resulting in delays in the overall progress. Similarly, before resuming power supply in the evening, it is also necessary to wait for the live work to complete the work of connecting the drainage line. The existence of this process delays the timing of restoring power supply, further extending the power outage time of users.

[0004] 2. Increased power outage time: Due to the impact of the release and connection of live work, the power outage time for users is significantly extended. These necessary operation steps every day not only lead to increased power outage time due to delays, but also greatly reduce the effective working time of intermediate construction work, thus affecting the efficiency of the entire operation project.

[0005] 3. Burden on operators: In order to solve the problem of insufficient working time, live-line operators have to go out early in the morning to release the drainage line, and have to be on duty to connect the drainage line at night. This frequent early departure and late return not only affects the life and rest patterns of the operators, but also leads to insufficient recovery of their physical and mental state. Due to the limitations and arrangements of daytime hours, the number of live-line operations and the frequency of night operations increase accordingly. However, night operations themselves are more complex and risky. With the superposition of fatigue and risks, safety hazards increase significantly.

[0006] 4. Increased safety risks: Frequent live-line operations and increased nighttime operations have led to greater safety risks for workers. In the absence of adequate rest, workers' attention and reaction abilities may decline, increasing the probability of accidents when performing complex and dangerous live-line operations.

[0007] In summary, there is an urgent need to develop a device for rapid shutdown and restoration of power during live distribution operations to reduce the time for releasing and splicing drainage lines. Summary of the invention

[0008] In order to solve the above problems, the present invention proposes a device for quickly stopping and restoring power during live distribution operations, which is used to reduce the time for releasing and splicing the drainage line and improve the efficiency of live distribution operations.

[0009] In order to achieve the above object, the present invention adopts the following technical solutions:

[0010] A fast stopping and restoring device for live distribution work, comprising a fixing frame, three groups of upper wire seats and three groups of lower wire seats installed on the fixing frame, and a wiring contact assembly and an on-off drive assembly located between the upper wire seats and the lower wire seats;

[0011] The three groups of upper line seats are provided with three-phase first lead wires, one end of which is connected to the main cable, and the other end passes through the three groups of upper line seats and is electrically connected to the wiring contact assembly; the three groups of lower line seats are provided with three-phase second lead wires, one end of which is detachably connected to the bypass cable, and the other end passes through the three groups of lower line seats and the on-off drive assembly; the on-off drive assembly is used to control the conduction and disconnection between the three-phase first lead wire and the three-phase second lead wire, so that the main cable and the bypass cable form a current path or disconnect the current path.

[0012] Furthermore, the fixing frame is a rectangular frame structure, one side of which is equipped with three groups of upper wire seats and three groups of lower wire seats, and the other side is equipped with a pole fixing assembly, through which the fixing frame can be detachably mounted on the pole.

[0013] Furthermore, the pole fixing assembly includes an upper ring buckle and a lower ring buckle, the upper ring buckle and the lower ring buckle are arranged at intervals, and one side of the upper ring buckle and the lower ring buckle is fixedly connected to the fixing frame; the upper ring buckle and the lower ring buckle are both hoop structures.

[0014] Furthermore, the three groups of upper line seats and the three groups of lower line seats are respectively installed on the fixing frame through the upper insulating fixing frame and the lower insulating fixing frame, and the upper line seats and the lower line seats are in an isosceles trapezoidal structure with the fixing frame after installation; the upper insulating fixing frame and the lower insulating fixing frame are installed in the same fixing frame structure, both are made of epoxy board insulating material, and the upper insulating fixing frame and the lower insulating fixing frame are provided with mounting plates on the ends extending outward from the fixing frame to cooperate with the upper line seats and the lower line seats for installation.

[0015] Furthermore, the upper wire seat and the lower wire seat are both cylindrical structures, and are provided with through holes for the drainage wire to pass through, and arc extinguishing chambers are provided inside the upper wire seat and the lower wire seat.

[0016] Furthermore, there are three groups of wiring contact assemblies, and each of the three groups of wiring contact assemblies includes a porcelain bottle insulator installed on a fixing frame, the bottom of the porcelain bottle insulator is fixedly connected to the fixing frame, and a copper sheet contact seat is installed on the top; the copper sheet contact seat is electrically connected to the first lead of the three phases.

[0017] Furthermore, the on-off drive components are in three groups, and the three groups of on-off drive components all include a porcelain bottle insulator mounted on a fixing frame, the bottom of the porcelain bottle insulator is fixedly connected to the fixing frame, and a drive box is mounted on the top;

[0018] The drive box is transmission-connected with a conductive stepping screw, which can move toward the copper sheet contact seat through the drive box. After the conductive stepping screw contacts the copper sheet contact seat, the main cable forms a current path with the bypass cable through the three-phase first lead, the copper sheet contact seat, the conductive stepping screw, and the three-phase second lead; conversely, the conductive stepping screw moves away from the copper sheet contact seat through the drive box. After the conductive stepping screw loses contact with the copper sheet contact seat, the main cable and the bypass cable disconnect the current path.

[0019] Furthermore, a stepper motor, a circuit board connected to the stepper motor, and a lithium battery connected to the stepper motor and the circuit board are installed in the driving box, and a first bevel gear is installed on the output end of the stepper motor;

[0020] The drive box is also provided with a mounting seat, on which a threaded sleeve penetrating the mounting seat is rotatably mounted via a bearing, the threaded sleeve is sleeved on the conductive stepping screw and threadedly connected to the conductive stepping screw, and a second bevel gear meshing with the first bevel gear is fixedly sleeved on the threaded sleeve.

[0021] Furthermore, an insulating shed is installed at one end of the conductive stepping screw near the copper sheet contact seat.

[0022] Furthermore, the stepper motor is also equipped with a manual motor operating lever.

[0023] Compared with the existing technology, the fast shutdown and restoration device for live distribution work has the following beneficial effects:

[0024] Improve operational efficiency: The device is designed to quickly release and connect the drainage wire, significantly shorten the power outage and power restoration time of live distribution operations, thereby improving overall work efficiency.

[0025] Improved safety: The use of electric automatic control on-off drive components reduces the manual operation process, reduces the safety risks of operators in high-voltage environments, and enhances the safety of operations.

[0026] Simplified structure: The device has a reasonable structural design and adopts modular components (such as upper and lower line seats, wiring contact assemblies, on-off drive assemblies, etc.), which helps to simplify the installation and maintenance of the device.

[0027] Strong adaptability: Through the detachable pole fixing components, the device can flexibly adapt to different pole types and environments, and has good installation adaptability.

[0028] Arc extinguishing function: The design of the arc extinguishing chamber can effectively control the generation of arc, especially during the current switching process, which helps to protect equipment and improve safety.

[0029] Operational flexibility: The stepper motor and manual motor operating lever are installed in the drive box, which supports both automatic control and manual operation when needed, providing flexible control methods to cope with different operating scenarios.

[0030] High reliability: The device ensures the reliability of the current path and reduces the contact resistance and the probability of failure by combining the design of copper sheet contact seat and conductive stepping screw.

[0031] Strong maintainability: The epoxy board and porcelain bottle insulators used in the device have good insulation performance and are easy to maintain and detect, ensuring reliability and stability during long-term use.

[0032] In summary, the fast power-off and power-restore device for live power distribution operations of the present invention not only improves the operating efficiency, but also enhances safety and reliability, and is suitable for the needs of live power operations in power systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0034] Figure 1 It is a schematic diagram of the overall structure of the device for rapid power off and power off during live power distribution operation of the present invention;

[0035] Figure 2 A schematic diagram of the coordination of a group of upper line seats and a group of lower line seats of the present invention;

[0036] Figure 3 It is a schematic diagram of the internal structure of the drive box of the on-off drive assembly of the present invention;

[0037] Figure 4 It is a transmission connection schematic diagram of the stepping motor and the conductive stepping screw in the driving box of the present invention;

[0038] In the figure: 1. fixing frame; 2. upper wire seat; 3. lower wire seat; 4. wiring contact assembly; 5. on-off drive assembly; 6. upper ring buckle; 7. lower ring buckle; 8. upper insulating fixing frame; 9. lower insulating fixing frame; 10. porcelain bottle insulator; 11. copper sheet contact seat; 12. drive box; 13. conductive stepping screw; 14. stepping motor; 15. circuit board; 16. lithium battery; 17. first bevel gear; 18. mounting seat; 19. threaded sleeve; 20. second bevel gear; 21. insulating umbrella skirt; 22. manual motor operating lever. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings of the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0040] In view of the current problems of complicated operations and low efficiency in releasing and splicing drainage lines during live operations, this embodiment provides a device for quickly stopping and restoring power during live distribution operations, which is used to reduce the time for releasing and splicing drainage lines and improve the efficiency of live distribution operations.

[0041] like Figure 1 As shown, the distribution live operation rapid shutdown and restoration device includes a fixing frame 1, which serves as the support structure of the entire device, ensuring that each component is fixed in an appropriate position, providing stability and support. The fixing frame 1 is a rectangular frame structure, one side of which is equipped with three groups of upper line seats 2 and three groups of lower line seats 3, and the other side is equipped with a pole fixing assembly. The fixing frame 1 is detachably installed on the pole through the pole fixing assembly. Further, as a preferred technical solution of this embodiment, as Figure 1 As shown, the pole fixing assembly in this embodiment includes an upper ring buckle 6 and a lower ring buckle 7, and the upper ring buckle 6 and the lower ring buckle 7 are arranged at intervals, and one side of the upper ring buckle 6 and the lower ring buckle 7 is fixedly connected to the fixing frame 1; the upper ring buckle 6 and the lower ring buckle 7 are both hoop structures, and the fixing frame 1 is firmly installed on the pole through the upper and lower ring buckles to ensure the stability and safety of the device on the pole.

[0042] like Figure 1 and Figure 2As shown, three groups of upper wire seats 2 and three groups of lower wire seats 3 are installed on the fixing frame 1, as well as the wiring contact assembly 4 and the on-off drive assembly 5 located between the upper wire seats 2 and the lower wire seats 3. The three groups of upper wire seats 2 are installed with the three-phase first drain wires, one end of which is connected to the main cable, and the other end passes through the three groups of upper wire seats 2 and is electrically connected to the wiring contact assembly 4. The three groups of lower wire seats 3 are installed with the three-phase second drain wires, one end of which is detachably connected to the bypass cable, and the other end passes through the three groups of lower wire seats 3 and the on-off drive assembly 5. Among them, the upper wire seats 2 and the lower wire seats 3 together constitute the basis for the connection of the drain wires, and the on-off drive assembly 5 controls the conduction and disconnection between the three-phase first drain wires and the three-phase second drain wires, so that the main cable and the bypass cable form a current path or disconnect the current path.

[0043] like Figure 1 and Figure 2 As shown, in this embodiment, three groups of upper wire seats 2 and three groups of lower wire seats 3 are respectively installed on the fixing frame 1 through the upper insulating fixing frame 8 and the lower insulating fixing frame 9, and the upper wire seats 2 and the lower wire seats 3 are in an isosceles trapezoidal structure with the fixing frame 1 after installation. The upper insulating fixing frame 8 and the lower insulating fixing frame 9, as the supporting structure of the upper wire seats 2 and the lower wire seats 3, ensure that the upper wire seats 2 and the lower wire seats 3 are fixed in appropriate positions, and provide stability and support. The upper insulating fixing frame 8 and the lower insulating fixing frame 9 have the same structure, and are both made of epoxy board insulating material, and the upper insulating fixing frame 8 and the lower insulating fixing frame 9 extending outward from the fixing frame 1 are provided with mounting plates for matching the upper wire seats 2 and the lower wire seats 3.

[0044] like Figure 1 and Figure 2 As shown, the upper wire seat 2 and the lower wire seat 3 in this embodiment are both cylindrical structures, and the upper wire seat 2 and the lower wire seat 3 are provided with through holes for the drainage wire to pass through; at the same time, the upper wire seat 2 and the lower wire seat 3 are provided with arc extinguishing chambers inside, and the function of the arc extinguishing chamber is to suppress the formation of arcs and control arc discharge during power failure, so as to protect the equipment and the environment and eliminate potential damage caused by arcs.

[0045] like Figure 1 and Figure 2 As shown, there are three groups of wiring contact assemblies 4 in this embodiment, and the three groups of wiring contact assemblies 4 all include a porcelain bottle insulator 10 installed on a fixing frame 1. The bottom of the porcelain bottle insulator 10 is fixedly connected to the fixing frame 1, and a copper sheet contact seat 11 is installed on the top. The copper sheet contact seat 11 is electrically connected to the three-phase first lead. Among them, the porcelain bottle insulator 10 provides electrical insulation, prevents current from flowing along the external path of the equipment, and ensures the safety and reliable operation of the equipment. The copper sheet contact seat 11 serves as an electrically connected contact, and is connected to the three-phase first lead when conducting, forming a current path between the main cable and the bypass cable.

[0046] like Figure 1 and Figure 2 As shown, in this embodiment, there are three groups of on-off drive components 5, and the three groups of on-off drive components 5 all include a porcelain bottle insulator 10 installed on a fixing frame 1, the bottom of the porcelain bottle insulator 10 is fixedly connected to the fixing frame 1, and a drive box 12 is installed on the top. The drive box 12 contains a stepper motor 14 and related electronic components to control the movement of the conductive stepper screw 13 to achieve current drainage. Figure 1 and Figure 2 As shown, in this embodiment, a conductive stepping screw 13 is transmission-connected to the driving box 12 , and the conductive stepping screw 13 is responsible for contacting the copper sheet contact seat 11 , and the current is turned on and off through the control of the stepping motor 14 .

[0047] Specifically, the conductive stepping screw 13 can move toward the copper sheet contact seat 11 through the driving box 12. After the conductive stepping screw 13 contacts the copper sheet contact seat 11, the main cable forms a current path with the bypass cable through the three-phase first lead, the copper sheet contact seat 11, the conductive stepping screw 13, and the three-phase second lead; conversely, the conductive stepping screw 13 moves away from the copper sheet contact seat 11 through the driving box 12. After the conductive stepping screw 13 loses contact with the copper sheet contact seat 11, the current path between the main cable and the bypass cable is disconnected.

[0048] Furthermore, the drive box 12 in this embodiment adopts the following structure to realize the movement control of the conductive stepping screw 13. Figure 3 As shown, in this embodiment, a stepper motor 14, a circuit board 15 connected to the stepper motor 14, and a lithium battery 16 connected to the stepper motor 14 and the circuit board 15 are installed in the driving box 12. The circuit board 15 is equipped with a remote controller; the stepper motor 14 provides a precisely controlled power source to drive the conductive stepper screw 13 to achieve fine movement; the lithium battery 16 provides power for the stepper motor 14 and its control circuit to ensure that the device can work normally without an external power supply.

[0049] The stepping motor 14 and the conductive stepping screw 13 are transmitted through the following transmission components: Figure 4 As shown, a first bevel gear 17 is installed on the output end of the stepper motor 14; a mounting seat 18 is also provided in the drive box 12, and a threaded sleeve 19 penetrating the mounting seat 18 is rotatably installed on the mounting seat 18 through a bearing, the threaded sleeve 19 is sleeved on the conductive stepping screw 13 and threadedly connected to the conductive stepping screw 13, and a second bevel gear 20 meshing with the first bevel gear 17 is fixedly sleeved on the threaded sleeve 19.

[0050] When the stepper motor 14 is controlled to run forward by the remote controller, the output end of the stepper motor 14 drives the first bevel gear 17 to rotate at high speed. Since the first bevel gear 17 is meshed with the second bevel gear 20, the first bevel gear 17 rotates at high speed while driving the second bevel gear 20 and the threaded sleeve 19 to rotate at high speed relative to the mounting seat 18. Since the threaded sleeve 19 is threadedly connected to the conductive stepper screw 13, and since one end of the conductive stepper screw 13 is connected to the three-phase second drainage line and is subject to the rotation limit of the three-phase second drainage line, the conductive stepper screw 13 moves forward or backward when the threaded sleeve 19 rotates at high speed, and contacts with the copper sheet contact seat 11 or moves in the opposite direction and loses contact with the copper sheet contact seat 11. In addition, a guide groove can be provided on the conductive stepper screw 13, and a guide block can be provided in the mounting seat 18 to assist in guiding the conductive stepper screw 13 to move forward or backward and to limit the rotation.

[0051] Further, as a preferred technical solution of this embodiment, Figure 1 and Figure 2 As shown, in this embodiment, an insulating shed 21 is installed at one end of the conductive stepping screw 13 close to the copper sheet contact seat 11; the insulating shed 21 further improves the safety of the conductive stepping screw 13, avoids current leakage, and increases the insulation performance of the overall structure.

[0052] Further, as a preferred technical solution of this embodiment, Figure 4 As shown, the stepper motor 14 in this embodiment is also equipped with a manual motor operating lever 22, which allows manual intervention to control the conduction and disconnection of the current when the automatic control fails or the lithium battery 16 is out of power, thereby ensuring the operator's flexible response ability.

[0053] Based on the above distribution live working fast stop and power restoration device, when performing live working release and connecting drainage line operation, the following steps can be installed:

[0054] Preparation: Ensure that the power distribution system has been properly inspected for safety and that the working environment meets safety standards. Prepare a quick shutdown and restoration device for live distribution work and check the integrity of all connections and components.

[0055] Install the fixing bracket on the pole: Use the pole fixing assembly to firmly install the fixing bracket 1 on the pole to ensure that it is firm and reliable.

[0056] Connect the drain wire: Confirm that the three-phase first drain wire is correctly connected to the main cable. Removably connect one end of the three-phase second drain wire to the bypass cable to ensure that there is no risk of short circuit at the connection.

[0057] Start the on-off drive component:

[0058] Turn on the power supply of the fast stopping and restoring device for live distribution operation. Operate the stepper motor 14, and start the on-off drive assembly 5 through the manual motor operating lever 22 or the automatic control system. Control the conductive stepper screw 13 to move toward the copper sheet contact seat 11, contact the copper sheet contact seat 11, and form a current path.

[0059] Complete the drainage operation: confirm that the current successfully passes through the three-phase first drainage wire, the copper sheet contact seat 11, the conductive stepping screw 13 and the three-phase second drainage wire to form a conductive path between the main cable and the bypass cable. At this time, the bypass cable should be in the drainage state and the current can flow safely.

[0060] Monitor current: Check the current status in real time through the monitoring system to ensure that the drainage process is stable and without abnormalities. If any abnormality occurs, stop the operation immediately and conduct troubleshooting.

[0061] After the operation is completed, restore power: After the operation is completed, use the on-off drive component 5 to control the conductive stepping screw 13 to move away from the copper sheet contact seat 11 to disconnect the current path between the main cable and the bypass cable. Under the premise of ensuring all safety, remove the connection of the bypass cable and restore the main cable to normal working state.

[0062] It should be noted that after the distribution live operation rapid stop and restoration device is installed on the pole, it does not need to be dismantled. When the live operation is released and the drainage line is connected again, it is only necessary to pass the three-phase second drainage line through the three groups of lower line seats 3 and connect it to the conductive stepping screw 13 of the on-off drive assembly 5, and at the same time connect the three-phase second drainage line to the bypass cable.

[0063] After actual testing, the distribution live operation rapid shutdown and restoration device improves the effective operation time and reduces the waiting time for power outages: calculated according to the time of 1.5 hours for a single live operation, that is, the morning release and evening connection are counted as 2 times, and the effective operation time can be increased by 3 hours each time, reducing the number and duration of night operations; at the same time, the customer's power outage time will also be shortened by 3 hours, improving the power supply reliability of the distribution network. In terms of improving the safety of operators: for live distribution operations, it also effectively avoids the situation of morning release and evening connection, avoids the rush to catch up with the progress of live operations, ensures normal rest time for operators, and avoids the safety risks caused by fatigue operations and night operations. In terms of operation convenience: compared with the construction projects of live operation release, connection of drainage lines and power outage operations, traditional operations require the transportation of large equipment, which is not only difficult to transport but also complicated to operate. The device of the present invention is light and compact and easy to carry and install, which greatly improves the convenience of operation and reduces operation costs. In terms of operation continuity: the project shutdown and power restoration operations can be completed through this device. After the live working team installs the starting device, they can dismantle the line for maintenance. After completing the maintenance work, the current path of the device can be disconnected remotely and the device can be removed.

[0064] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for rapid power off and power off during live distribution work, characterized in that: It includes a fixing frame, three groups of upper wire seats and three groups of lower wire seats installed on the fixing frame, and a wiring contact assembly and an on-off drive assembly located between the upper wire seats and the lower wire seats; The three groups of upper line seats are provided with three-phase first lead wires, one end of which is connected to the main cable, and the other end passes through the three groups of upper line seats and is electrically connected to the wiring contact assembly; the three groups of lower line seats are provided with three-phase second lead wires, one end of which is detachably connected to the bypass cable, and the other end passes through the three groups of lower line seats and the on-off drive assembly; the on-off drive assembly is used to control the conduction and disconnection between the three-phase first lead wire and the three-phase second lead wire, so that the main cable and the bypass cable form a current path or disconnect the current path.

2. The fast power-off and power-restore device for live power distribution work according to claim 1 is characterized in that: The fixing frame is a rectangular frame structure, one side of which is equipped with three groups of upper wire seats and three groups of lower wire seats, and the other side is equipped with a pole fixing assembly, through which the fixing frame can be detachably installed on the pole.

3. The fast power-off and power-restore device for live power distribution work according to claim 1 is characterized in that: The pole fixing assembly comprises an upper ring buckle and a lower ring buckle, the upper ring buckle and the lower ring buckle are arranged at intervals, and one side of the upper ring buckle and the lower ring buckle are fixedly connected to the fixing frame; the upper ring buckle and the lower ring buckle are both hoop structures.

4. The fast power-off and power-restore device for live power distribution work according to claim 1 is characterized in that: The three groups of upper wire seats and the three groups of lower wire seats are respectively installed on the fixing frame through the upper insulating fixing frame and the lower insulating fixing frame, and the upper wire seats and the lower wire seats are in an isosceles trapezoidal structure with the fixing frame after installation; the upper insulating fixing frame and the lower insulating fixing frame are installed in the same fixing frame structure, both are made of epoxy board insulating material, and the upper insulating fixing frame and the lower insulating fixing frame are provided with mounting plates on the ends extending outward from the fixing frame to cooperate with the upper wire seats and the lower wire seats for installation.

5. The fast power-off and power-restore device for live power distribution work according to claim 1 is characterized in that: The upper wire seat and the lower wire seat are both cylindrical structures, and are provided with through holes for the drainage wire to pass through. At the same time, arc extinguishing chambers are provided inside the upper wire seat and the lower wire seat.

6. The fast power-off and power-restore device for live power distribution work according to claim 1 is characterized by: There are three groups of wiring contact assemblies, and all three groups of wiring contact assemblies include a porcelain bottle insulator installed on a fixing frame, the bottom of the porcelain bottle insulator is fixedly connected to the fixing frame, and a copper sheet contact seat is installed on the top; the copper sheet contact seat is electrically connected to the first lead of the three phases.

7. The device for rapid power off and power off during live power distribution work according to claim 6 is characterized in that: There are three groups of on-off drive components, each of which includes a porcelain bottle insulator mounted on a fixing frame, the bottom of the porcelain bottle insulator is fixedly connected to the fixing frame, and a drive box is mounted on the top; The drive box is transmission-connected with a conductive stepping screw, which can move toward the copper sheet contact seat through the drive box. After the conductive stepping screw contacts the copper sheet contact seat, the main cable forms a current path with the bypass cable through the three-phase first lead, the copper sheet contact seat, the conductive stepping screw, and the three-phase second lead; conversely, the conductive stepping screw moves away from the copper sheet contact seat through the drive box. After the conductive stepping screw loses contact with the copper sheet contact seat, the main cable and the bypass cable disconnect the current path.

8. The fast power-off and power-restore device for live power distribution work according to claim 7 is characterized by: The drive box is equipped with a stepper motor, a circuit board connected to the stepper motor, and a lithium battery connected to the stepper motor and the circuit board, and a first bevel gear is installed on the output end of the stepper motor; The drive box is also provided with a mounting seat, on which a threaded sleeve penetrating the mounting seat is rotatably mounted via a bearing, the threaded sleeve is sleeved on the conductive stepping screw and threadedly connected to the conductive stepping screw, and a second bevel gear meshing with the first bevel gear is fixedly sleeved on the threaded sleeve.

9. The fast power-off and power-restore device for live power distribution work according to claim 7, characterized in that: An insulating shed is installed at one end of the conductive stepping screw rod close to the copper sheet contact seat.

10. The fast power-off and power-restore device for live power distribution work according to claim 8, characterized in that: The stepper motor is also equipped with a manual motor operating lever.

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