Wind power generation line conversion device

Abstract

The utility model belongs to the technical field of wind power generation, in particular to a wind power generation line conversion device, which comprises an insulating table, a conversion assembly is arranged on the surface of the insulating table, and the conversion assembly comprises a first arc-shaped conductor plate fixedly connected to the upper surface of the insulating table and a second arc-shaped conductor plate fixedly connected to the upper surface of the insulating table. A gear is arranged above the insulating table, the surface of the gear is in meshed connection with a toothed plate, one end of the toothed plate is fixedly connected with a longitudinal plate, and the face, away from the toothed plate, of the longitudinal plate is fixedly connected with two pull ropes; according to the magnetic force change of the electromagnet and the magnet plate, parts are driven to operate, line connection is automatically switched, different wind speed power generation states are adapted, a normally-closed terminal is connected at low wind speed, electric energy is transmitted to energy storage or low-load equipment, and a normally-open terminal is connected at high wind speed, and electric energy is transmitted to a power grid or high-load equipment.

Description

Technical Field

[0001] This utility model belongs to the field of wind power generation technology, specifically relating to a wind power generation line conversion device. Background Technology

[0002] With the increasing global demand for clean energy, wind power, as a green and sustainable way of obtaining energy, occupies an increasingly important position in the energy sector. Wind power converts wind energy into electricity through wind turbines. It has many advantages such as abundant resources, wide distribution, and no pollution. It is one of the important means to deal with energy crisis and environmental pollution problems. At present, the scale of wind farms is constantly expanding, the capacity of single units is also continuously increasing, and its proportion in the power supply structure is gradually increasing.

[0003] In existing wind power line switching devices, many use traditional mechanical switches for line switching. When faced with frequent wind speed changes, the contacts of the mechanical switches will be damaged by arc erosion after long-term frequent operation, affecting the normal connection of the line.

[0004] Therefore, a wind power generation line conversion device is designed to solve the above problems. Utility Model Content

[0005] To address the problems mentioned in the background section, this invention provides a wind power generation line switching device. Based on the changes in the magnetic force of an electromagnet and a magnetic plate, the device drives components to operate, automatically switching line connections to adapt to different wind speed power generation conditions.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a wind power generation line conversion device, comprising an insulating platform, a conversion component disposed on the surface of the insulating platform, the conversion component comprising a first arc-shaped conductor plate fixedly connected to the upper surface of the insulating platform and a second arc-shaped conductor plate fixedly connected to the upper surface of the insulating platform, a gear disposed above the insulating platform, a toothed plate meshing with the surface of the gear, a longitudinal plate fixedly connected to one end of the toothed plate, two pull ropes fixedly connected to the side of the longitudinal plate away from the toothed plate, a counterweight fixedly connected to the end of the pull ropes away from the longitudinal plate, a magnet plate fixedly connected to the side of the longitudinal plate away from the toothed plate, an electromagnet mounted on the upper surface of the insulating platform, a connecting plate disposed above the gear, and a third arc-shaped conductor plate disposed at one end of the connecting plate.

[0007] As a preferred embodiment of the wind power generation line conversion device of this utility model, a bearing is installed in a circular groove on the upper surface of the insulating platform, a rotating shaft is inserted inside the bearing, the rotating shaft is rotatably connected to the insulating platform through the bearing, the top end of the rotating shaft is fixedly connected to the bottom surface of the connecting plate, and the gear is fixedly sleeved on the surface of the rotating shaft.

[0008] In a preferred embodiment of the wind power generation line conversion device of this utility model, a conductor connecting rod is inserted into an embedded groove on the upper surface of the connecting plate. One end of the conductor connecting rod is fixedly connected to a third arc-shaped conductor plate, and the other end of the conductor connecting rod is fixedly connected to a spring. The spring is located inside the embedded groove, and the end of the spring away from the conductor connecting rod is fixedly connected to the connecting plate. The conductor connecting rod and the connecting plate are slidably connected, and the surfaces of the third arc-shaped conductor plate and the first arc-shaped conductor plate are in contact.

[0009] As a preferred embodiment of the wind power generation line conversion device of this utility model, the surface of the first arc-shaped conductor plate is fixedly connected with a normally closed terminal, the surface of the second arc-shaped conductor plate is fixedly connected with a normally open terminal, and the upper surface of the conductor connecting rod is fixedly connected with a common terminal.

[0010] As a preferred embodiment of the wind power generation line conversion device of this utility model, an L-shaped plate is fixedly connected to one side of the insulating platform, and two square grooves on the upper surface of the L-shaped plate are respectively installed with first pulleys, and the surface of the pull rope and the first pulleys are in contact.

[0011] As a preferred embodiment of the wind power generation line conversion device of this utility model, two U-shaped blocks are fixedly connected to the upper surface of the insulating platform, and a limiting plate is inserted inside each U-shaped block. One end of the limiting plate is fixedly connected to the longitudinal plate, and the limiting plate and the U-shaped blocks are slidably connected. A detection module and a controller are installed on the surface of the insulating platform.

[0012] As a preferred embodiment of the wind power generation line conversion device of this utility model, the surface of the insulating platform is provided with auxiliary components, the auxiliary components including a first stop shaft, a second stop shaft, an arc-shaped insulating plate and a second pulley. The arc-shaped insulating plate is fixedly connected to the upper surface of the insulating platform, the arc-shaped insulating plate is located between the first arc-shaped conductor plate and the second arc-shaped conductor plate, the first stop shaft and the second stop shaft are fixedly connected to the upper surface of the insulating platform, the rotating shaft is located between the first stop shaft and the second stop shaft, and the second pulley is provided on the side of the toothed plate away from the gear, the second pulley is installed on the upper surface of the insulating platform.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: A conversion component is added to this application. Based on the change of magnetic force of the electromagnet and the magnet plate, the component is driven to operate and automatically switch the circuit connection to adapt to different wind speed power generation states. When the wind speed is low, the normally closed terminal is connected to transmit the electrical energy to the energy storage or low-load equipment. When the wind speed is high, the normally open terminal is connected to transmit the electrical energy to the power grid or high-load equipment. At the same time, auxiliary components are added. The arc-shaped insulating plate isolates the first arc-shaped conductor plate and the second arc-shaped conductor plate to prevent short circuits. The first stop shaft and the second stop shaft are precisely limited to prevent the connecting plate from being damaged due to excessive rotation. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the second arc-shaped conductor plate and the second arc-shaped conductor plate in this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the toothed plate and the longitudinal plate in this utility model;

[0018] Figure 4 This is a schematic diagram of the connecting plate and conductor connecting rod in this utility model;

[0019] Figure 5 This is a schematic diagram of the gear and connecting plate in this utility model;

[0020] In the picture:

[0021] 1. Insulating platform;

[0022] 2. Conversion assembly; 21. First arc-shaped conductor plate; 22. Second arc-shaped conductor plate; 23. Normally closed terminal; 24. Normally open terminal; 25. Common terminal; 26. Counterweight; 27. L-shaped plate; 28. Gear; 29. ​​Bearing; 210. Rotating shaft; 211. Connecting plate; 212. Third arc-shaped conductor plate; 213. Conductor connecting rod; 214. Embedded groove; 215. Toothed plate; 216. Longitudinal plate; 217. Limiting plate; 218. Magnet plate; 219. Electromagnet; 220. U-shaped locking block; 221. First pulley; 222. Pull rope; 223. Spring;

[0023] 3. Auxiliary components; 31. First stop shaft; 32. Second stop shaft; 33. Arc-shaped insulating plate; 34. Second pulley. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1 to 5 As shown;

[0026] A wind power generation line switching device includes an insulating platform 1.

[0027] In this implementation plan: In existing wind power generation line switching devices, many traditional mechanical switches are used for line switching. When faced with frequent wind speed changes, the contacts of the mechanical switches will be damaged by arc erosion after long-term frequent operation, affecting the normal connection of the line. To solve this technical problem, a switching component 2 and an auxiliary component 3 are added on this basis.

[0028] Furthermore:

[0029] In summary: A conversion assembly 2 is provided on the surface of the insulating platform 1. The conversion assembly 2 includes a first arc-shaped conductor plate 21 and a second arc-shaped conductor plate 22 fixedly connected to the upper surface of the insulating platform 1. A gear 28 is positioned above the insulating platform 1. A toothed plate 215 is meshed with the surface of the gear 28. A longitudinal plate 216 is fixedly connected to one end of the toothed plate 215. Two pull ropes 222 are fixedly connected to the side of the longitudinal plate 216 away from the toothed plate 215. A counterweight 26 is fixedly connected to the end of the pull ropes 222 away from the longitudinal plate 216. A magnet plate 218 is fixedly connected to the side of the longitudinal plate 216 away from the toothed plate 215. An electromagnet 219 is mounted on the upper surface of the insulating platform 1. The gear 28... A connecting plate 211 is provided above the insulating platform 1. A third arc-shaped conductor plate 212 is provided at one end of the connecting plate 211. A bearing 29 is installed in a circular groove on the upper surface of the insulating platform 1. A rotating shaft 210 is inserted inside the bearing 29. The rotating shaft 210 is rotatably connected to the insulating platform 1 through the bearing 29. The top end of the rotating shaft 210 is fixedly connected to the bottom surface of the connecting plate 211. A gear 28 is fixedly sleeved on the surface of the rotating shaft 210. A normally closed terminal 23 is fixedly connected to the surface of the first arc-shaped conductor plate 21. A normally open terminal 24 is fixedly connected to the surface of the second arc-shaped conductor plate 22. A common terminal 25 is fixedly connected to the upper surface of the conductor connecting rod 213. A detection module and a controller are installed on the surface of the insulating platform 1.

[0030] In this implementation scheme: when low wind speed is detected, the generator output power is low, the force repulsing between the electromagnet 219 and the magnet plate 218 is reduced. Since the pulling force of the counterweight 26 is always present, the longitudinal plate 216 drives the toothed plate 215 to move closer to the electromagnet 219 under this pulling force. The movement of the toothed plate 215 causes the gear 28 meshing with it to rotate counterclockwise, thereby causing the third arc-shaped conductor plate 212 to adhere to the surface of the first arc-shaped conductor plate 21. At this time, the normally closed terminal 23 and the common terminal 25 are connected through the first arc-shaped conductor plate 21 and the third arc-shaped conductor plate 212.

[0031] When the detection module detects an increase in wind speed, a certain level of generator output power, and that the power quality meets requirements, the force repulsing the electromagnet 219 against the magnet plate 218 increases, pushing the magnet plate 218. This causes the gear plate 215 to rotate clockwise, meshing with the gear 28. The gear 28 then rotates clockwise via the rotating shaft 210, causing the connecting plate 211 to rotate clockwise. The third arc-shaped conductor plate 212 slides from the surface of the first arc-shaped conductor plate 21 to the surface of the second arc-shaped conductor plate 22, thus connecting the normally open terminal 24 and the common terminal 25 through the second arc-shaped conductor plate 22 and the third arc-shaped conductor plate 212.

[0032] It should be noted that: Common terminal 25 connects to the output line of the wind turbine. It serves as the starting point for receiving the generator's output power, obtaining power from the generator under different wind speeds and other operating conditions. It is the input source for the entire line switching. Normally closed terminal 23 is generally connected to energy storage devices, such as battery banks or other forms of energy storage. At low wind speeds, the generator's output power is low, and electrical energy can flow through normally closed terminal 23 into the energy storage device for storage, so that it can be used when needed, playing a role in balancing power supply and demand and stabilizing power output. When the wind turbine's output power is low but some electrical energy is still available, normally closed terminal 23 may also be connected to some low-load devices with relatively small power demands, such as those used within the wind farm. The lighting system and small monitoring equipment in the wind farm enable the effective use of this electrical energy and avoid waste. The normally open terminal 24 is usually used to connect to the power grid. When the wind speed is suitable or high, the generator output power reaches a certain level, and the power quality meets the grid access requirements, the line is switched to the normally open terminal 24 to transmit the electrical energy generated by the generator to the power grid, thereby providing power to the outside world and providing electricity to a wider range of users. In some cases, if there are large high-load equipment or units that require further centralized processing of electrical energy, such as large transformer rectifier equipment, when the generator output power is high, the electrical energy can also be connected to these equipment or units through the normally open terminal 24 for corresponding processing or use.

[0033] Furthermore:

[0034] In an optional embodiment, a conductor connecting rod 213 is inserted into an embedding groove 214 on the upper surface of the connecting plate 211. One end of the conductor connecting rod 213 is fixedly connected to the third arc-shaped conductor plate 212, and the other end of the conductor connecting rod 213 is fixedly connected to a spring 223. The spring 223 is located inside the embedding groove 214, and the end of the spring 223 away from the conductor connecting rod 213 is fixedly connected to the connecting plate 211. The conductor connecting rod 213 and the connecting plate 211 are slidably connected, and the surfaces of the third arc-shaped conductor plate 212 and the first arc-shaped conductor plate 21 are in contact.

[0035] In this implementation scheme: the presence of spring 223 allows conductor connecting rod 213 to slide within embedded groove 214, preventing poor contact due to insufficient pressure and ensuring good conductivity. During the entire line switching process, gear 28 drives rotating shaft 210 and connecting plate 211 to rotate, which will generate a certain inertial impact force. Spring 223 can play a buffering role, reducing the impact force on the connection between the third arc-shaped conductor plate 212 and other conductor plates, and extending the service life of the device.

[0036] Furthermore:

[0037] In an optional embodiment, an L-shaped plate 27 is fixedly connected to one side of the insulating platform 1. Two square grooves on the upper surface of the L-shaped plate 27 are respectively installed with first pulleys 221, and the pull rope 222 and the surface of the first pulleys 221 are in contact.

[0038] In this implementation scheme: the pull rope 222 connects the longitudinal plate 216 and the counterweight 26. By contacting the surface of the first pulley 221 on the L-shaped plate 27, the pulley's characteristics are utilized to change the vertical downward pulling force generated by the weight of the counterweight 26 into a horizontal pulling force on the longitudinal plate 216. This allows the counterweight 26 to act more effectively on the longitudinal plate 216. The first pulley 221 transforms the sliding friction between the pull rope 222 and the L-shaped plate 27 into rolling friction, greatly reducing the friction force when the pull rope 222 moves. This makes the pull rope 222 move more smoothly, reduces energy loss, and also reduces the wear of the pull rope 222 and the L-shaped plate 27, extending the service life of the device.

[0039] Furthermore:

[0040] In an optional embodiment, two U-shaped blocks 220 are fixedly connected to the upper surface of the insulating platform 1, and a limiting plate 217 is inserted inside each U-shaped block 220. One end of the limiting plate 217 is fixedly connected to the longitudinal plate 216, and the limiting plate 217 and the U-shaped block 220 are slidably connected.

[0041] In this implementation scheme: During the movement of the longitudinal plate 216, the sliding connection between the limiting plate 217 and the U-shaped locking block 220 provides stable support and guidance for the longitudinal plate 216, preventing the longitudinal plate 216 from shaking or deviating during movement, ensuring that it moves smoothly along the predetermined straight direction, thereby ensuring the stable operation of the entire line conversion device.

[0042] Furthermore:

[0043] In an optional embodiment, an auxiliary component 3 is provided on the surface of the insulating platform 1. The auxiliary component 3 includes a first stop shaft 31, a second stop shaft 32, an arc-shaped insulating plate 33, and a second pulley 34. The arc-shaped insulating plate 33 is fixedly connected to the upper surface of the insulating platform 1 and is located between the first arc-shaped conductor plate 21 and the second arc-shaped conductor plate 22. The first stop shaft 31 and the second stop shaft 32 are fixedly connected to the upper surface of the insulating platform 1. The rotating shaft 210 is located between the first stop shaft 31 and the second stop shaft 32. The second pulley 34 is provided on the side of the toothed plate 215 away from the gear 28 and is mounted on the upper surface of the insulating platform 1.

[0044] In this implementation scheme: the first arc-shaped conductor plate 21, the normally closed terminal 23, and the second arc-shaped conductor plate 22 are coaxially arranged, and the arc-shaped insulating plate 33 is made of insulating material. During the process of the third arc-shaped conductor plate 212 moving out from the surface of the first arc-shaped conductor plate 21 and contacting the surface of the second arc-shaped conductor plate 22, safety issues such as short circuits can be effectively avoided. At the same time, the distance between the first arc-shaped conductor plate 21 and the second arc-shaped conductor plate 22 is slightly larger than the size of the third arc-shaped conductor plate 212, which further ensures the safety of the switching process.

[0045] Working principle: The common terminal 25 is connected to the output line of the wind turbine, serving as the power input source for the entire line switching, and continuously receiving the power generated by the generator under different wind speed conditions;

[0046] The surface of the insulating platform 1 is equipped with a detection module and a controller. The detection module monitors parameters such as wind speed and output power of the wind turbine in real time and transmits the data to the controller. A line is led out from the output end of the wind turbine and first connected to the detection module. The detection module transmits the collected power generation parameters to the controller. At the same time, the electrical energy output by the wind turbine is converted into stable DC power through a power conversion and voltage stabilization device and then connected to the electromagnet 219 drive circuit. The controller calculates and generates a control signal based on the detection data and transmits it to the electromagnet 219 drive circuit. The drive circuit adjusts the current through the electromagnet 219 according to the control signal, thereby controlling the magnetic force of the electromagnet 219.

[0047] When low wind speed is detected, the generator output power is low, the force repulsing between the electromagnet 219 and the magnet plate 218 is reduced. Since the pulling force of the counterweight 26 is always present, the longitudinal plate 216 drives the toothed plate 215 to move towards the electromagnet 219 under this pulling force. The movement of the toothed plate 215 causes the gear 28 meshing with it to rotate counterclockwise.

[0048] Gear 28 drives connecting plate 211 to rotate counterclockwise via rotating shaft 210, thereby causing third arc-shaped conductor plate 212 to adhere to the surface of first arc-shaped conductor plate 21. At this time, normally closed terminal 23 and common terminal 25 are connected through first arc-shaped conductor plate 21 and third arc-shaped conductor plate 212.

[0049] Low-power electrical energy flows through normally closed terminal 23 to connected energy storage devices, such as battery packs, for storage and later use, or flows to low-load devices inside the wind farm, such as lighting systems and small monitoring equipment, to achieve efficient use of electrical energy and avoid waste.

[0050] When the detection module detects that the wind speed increases, the generator output power reaches a certain level, and the power quality meets the requirements, the force repulsing the electromagnet 219 against the magnet plate 218 increases, pushing the magnet plate 218, causing the longitudinal plate 216 to drive the toothed plate 215 to move away from the electromagnet 219. The toothed plate 215 drives the gear 28 meshing with it to rotate clockwise. The gear 28 drives the connecting plate 211 to rotate clockwise through the rotating shaft 210. The third arc-shaped conductor plate 212 slides from the surface of the first arc-shaped conductor plate 21 to the surface of the second arc-shaped conductor plate 22, realizing the connection between the normally open terminal 24 and the common terminal 25 through the second arc-shaped conductor plate 22 and the third arc-shaped conductor plate 212.

[0051] High-power electrical energy is transmitted to the power grid through normally open terminal 24 to supply power to external users, or when there are large high-load equipment or centralized power processing units inside the wind farm, the electrical energy is transmitted to these equipment or units for corresponding processing and use.

[0052] The first arc-shaped conductor plate 21, the normally closed terminal 23, and the second arc-shaped conductor plate 22 are coaxially arranged, and the arc-shaped insulating plate 33 is made of insulating material. During the process of the third arc-shaped conductor plate 212 moving out from the surface of the first arc-shaped conductor plate 21 and contacting the surface of the second arc-shaped conductor plate 22, safety problems such as short circuits can be effectively avoided. At the same time, the distance between the first arc-shaped conductor plate 21 and the second arc-shaped conductor plate 22 is slightly larger than the size of the third arc-shaped conductor plate 212, which further ensures the safety of the switching process.

[0053] When the wind turbine is operating at high wind speed and its output power reaches a certain range, the connecting plate 211 is in contact with the surface of the second baffle 32, restricting the connecting plate 211 from moving further and preventing damage to the equipment due to excessive switching. When the wind turbine is operating at low wind speed and its output power reaches a certain range, the connecting plate 211 is in contact with the surface of the first baffle 31, restricting the connecting plate 211 from moving and ensuring the safe and stable operation of the device under low wind speed conditions.

[0054] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A wind power generation line conversion device, comprising an insulating platform (1), characterized in that: A conversion assembly (2) is provided on the surface of the insulating platform (1). The conversion assembly (2) includes a first arc-shaped conductor plate (21) fixedly connected to the upper surface of the insulating platform (1) and a second arc-shaped conductor plate (22) fixedly connected to the upper surface of the insulating platform (1). A gear (28) is provided above the insulating platform (1). A toothed plate (215) is meshed with the surface of the gear (28). A longitudinal plate (216) is fixedly connected to one end of the toothed plate (215). The longitudinal plate (216) is away from the toothed plate. Two pull ropes (222) are fixedly connected to one side of the plate (215). A counterweight (26) is fixedly connected to the end of the pull rope (222) away from the longitudinal plate (216). A magnet plate (218) is fixedly connected to the side of the longitudinal plate (216) away from the toothed plate (215). An electromagnet (219) is installed on the upper surface of the insulating platform (1). A connecting plate (211) is provided above the gear (28). A third arc-shaped conductor plate (212) is provided at one end of the connecting plate (211).

2. The wind power generation line conversion device according to claim 1, characterized in that: A bearing (29) is installed in a circular groove on the upper surface of the insulating platform (1). A rotating shaft (210) is inserted inside the bearing (29). The rotating shaft (210) is rotatably connected to the insulating platform (1) through the bearing (29). The top end of the rotating shaft (210) is fixedly connected to the bottom surface of the connecting plate (211). The gear (28) is fixedly sleeved on the surface of the rotating shaft (210).

3. The wind power generation line conversion device according to claim 1, characterized in that: A conductor rod (213) is inserted into an embedding groove (214) on the upper surface of the connecting plate (211). One end of the conductor rod (213) is fixedly connected to the third arc-shaped conductor plate (212), and the other end of the conductor rod (213) is fixedly connected to a spring (223). The spring (223) is located inside the embedding groove (214), and the end of the spring (223) away from the conductor rod (213) is fixedly connected to the connecting plate (211). The conductor rod (213) and the connecting plate (211) are slidably connected. The surfaces of the third arc-shaped conductor plate (212) and the first arc-shaped conductor plate (21) are in contact.

4. The wind power generation line conversion device according to claim 3, characterized in that: The surface of the first arc-shaped conductor plate (21) is fixedly connected with a normally closed terminal (23), the surface of the second arc-shaped conductor plate (22) is fixedly connected with a normally open terminal (24), and the upper surface of the conductor connecting rod (213) is fixedly connected with a common terminal (25).

5. The wind power generation line conversion device according to claim 1, characterized in that: An L-shaped plate (27) is fixedly connected to one side of the insulating platform (1). Two square grooves on the upper surface of the L-shaped plate (27) are respectively installed with first pulleys (221). The surfaces of the pull rope (222) and the first pulleys (221) are in contact.

6. The wind power generation line conversion device according to claim 1, characterized in that: The upper surface of the insulating platform (1) is fixedly connected to two U-shaped blocks (220), and each U-shaped block (220) is fitted with a limiting plate (217). One end of the limiting plate (217) is fixedly connected to the longitudinal plate (216), and the limiting plate (217) and the U-shaped block (220) are slidably connected. The surface of the insulating platform (1) is equipped with a detection module and a controller.

7. The wind power generation line conversion device according to claim 2, characterized in that: The surface of the insulating platform (1) is provided with an auxiliary component (3). The auxiliary component (3) includes a first stop shaft (31), a second stop shaft (32), an arc-shaped insulating plate (33), and a second pulley (34). The upper surface of the insulating platform (1) is fixedly connected to the arc-shaped insulating plate (33), which is located between the first arc-shaped conductor plate (21) and the second arc-shaped conductor plate (22). The upper surface of the insulating platform (1) is fixedly connected to the first stop shaft (31) and the second stop shaft (32). The rotating shaft (210) is located between the first stop shaft (31) and the second stop shaft (32). The toothed plate (215) is provided with a second pulley (34) on the side away from the gear (28). The second pulley (34) is installed on the upper surface of the insulating platform (1).

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