Rapid grounding switch mechanism with electromagnetic release

Abstract

The utility model relates to the technical field of high-speed grounding switches, in particular to a high-speed grounding switch mechanism with an electromagnetic release. An output transmission shaft is arranged on a rack bottom plate, a middle rotating shaft is fixed to one end of the output transmission shaft, a worm wheel, a transmission check block and a crank are sequentially arranged on the middle rotating shaft from the position close to the rack bottom plate, a worm is matched with one side of the worm wheel, the worm and the worm wheel are in meshing transmission, and one end of the worm is connected with the output end of a motor. One end of the crank is fixedly connected with one end of a telescopic connecting rod through a bolt, the telescopic connecting rod is sleeved with an energy storage spring, the other end of the telescopic connecting rod is provided with one end of a fixing column, the other end of the fixing column is fixed to a rack bottom plate below the turbine, and an electromagnetic release is installed on a rack panel. Compared with the prior art, the high-speed grounding switch does not release energy after storing the energy and is controlled to be switched on and off by an electric signal, so that the high-speed grounding switch can better adapt to complex and changeable working conditions and test scenes, and the differentiation requirements under different situations are met.

Description

Technical Field

[0001] This utility model relates to the field of fast grounding switch technology, specifically a fast grounding switch mechanism with an electromagnetic trip unit. Background Technology

[0002] Fast-connecting grounding switches are an important component of gas-insulated metal-enclosed switchgear (GIS), typically installed outside the outgoing disconnector of the outgoing circuit near the line terminal. They serve two purposes: providing maintenance grounding during normal GIS operation and closing short-circuit currents during faults. They can quickly ground equipment or lines during grid faults, limiting overvoltage, preventing equipment damage, and ensuring personnel safety. With technological advancements, power systems increasingly demand higher reliability and stability from fast-connecting grounding structures. How to integrate fast-connecting grounding switches for energy storage, match relevant electrical signals, and achieve effective closing to better adapt to the differentiated requirements of various scenarios is a pressing issue that needs to be addressed. Utility Model Content

[0003] To overcome the shortcomings of the prior art, this utility model provides a fast grounding switch mechanism with an electromagnetic trip unit, including a frame base plate, support columns, and a frame panel. The frame base plate is fixedly connected to the frame panel via the support columns. An output drive shaft is provided on the frame base plate, and an intermediate rotating shaft is fixed to one end of the output drive shaft. A worm gear, a transmission stop, and a crank are sequentially arranged on the intermediate rotating shaft from near the frame base plate. A worm is fitted to one side of the worm gear, and the worm gear and worm gear mesh with each other for transmission. One end of the worm gear is connected to the output end of a motor. One end of the crank is fixedly connected to one end of a telescopic connecting rod via a pin. An energy storage spring is sleeved on the telescopic connecting rod. One end of the telescopic connecting rod is provided with a fixing column, and the other end of the fixing column is fixed to the frame base plate below the worm gear. An electromagnetic trip unit is installed on the frame panel.

[0004] The other end of the output drive shaft passes through the base plate of the frame.

[0005] The transmission stop block and the pin abut against each other on one side.

[0006] The crank is equipped with a contact plate, which is L-shaped.

[0007] The motor is fixed to the base plate of the frame.

[0008] The electromagnetic trip unit includes a housing, an iron core, a limiting shaft, a coil, a limiting pad, a limiting plate, and a spring. The two ends of the housing are fixed to the frame panel with bolts. An iron core is fixed to the inside of the housing with bolts. A limiting shaft is located in the center of the iron core, and a coil is located outside the limiting shaft. A limiting pad and a limiting plate are sequentially fitted on one side of the limiting shaft. One end of the limiting shaft passes through the frame panel, and the other end passes through the housing. A spring is fitted in the middle section of the limiting shaft.

[0009] Compared with the prior art, this utility model realizes the condition requirement that the fast grounding switch does not release energy after storage and is controlled to close by an electrical signal, giving the fast grounding switch a more precise and flexible operation control capability, enabling it to better adapt to complex and ever-changing working conditions and test scenarios, and meet the differentiated requirements for fast grounding operation under different situations. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the fast grounding switch mechanism.

[0011] Figure 2 This is a schematic diagram of the fast grounding switch mechanism.

[0012] Figure 3 A schematic diagram of the intermediate layer structure of the fast grounding switch mechanism;

[0013] Figure 4 This is a schematic diagram of the crank section.

[0014] Figure 5 This is a schematic diagram of an electromagnetic trip unit;

[0015] Figure 6 This is a schematic diagram of the grounding switch mechanism rotating.

[0016] See Figure 1 1. Frame base plate, 2. Support column, 3. Frame panel, 4. Output drive shaft, 5. Intermediate rotating shaft, 6. Transmission stop block, 7. Crank, 8. Turbine, 9. Worm gear, 10. Motor, 11. Fixed column, 12. Telescopic connecting rod, 13. Energy storage spring, 14. Pin, 15. Contact plate, 16. Electromagnetic trip unit, 17. Housing, 18. Iron core, 19. Limiting shaft, 20. Coil, 21. Limiting pad, 22. Limiting plate, 23. Spring. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] like Figures 1 to 3A fast grounding switch mechanism with an electromagnetic trip unit includes a frame base plate 1, a support column 2, and a frame panel 3. The frame base plate 1 is fixedly connected to the frame panel 3 via the support column 2. An output drive shaft 4 is provided on the frame base plate 1. An intermediate rotating shaft 5 is fixed to one end of the output drive shaft 4. A turbine 8, a transmission stop 6, and a crank 7 are sequentially arranged on the intermediate rotating shaft 5 from near the frame base plate 1. A worm gear 9 is fitted to one side of the turbine 8, and the worm gear 9 and turbine 8 mesh with each other for transmission. One end of the worm gear 9 is connected to the output end of a motor 10. One end of the crank 7 is fixedly connected to one end of a telescopic connecting rod 12 via a pin 14. An energy storage spring 13 is sleeved on the telescopic connecting rod 12. A fixing post 11 is provided at the other end of the telescopic connecting rod 12. The other end of the fixing post 11 is fixed to the frame base plate 1 below the turbine 8. An electromagnetic trip unit 16 is installed on the frame panel 3. The telescopic connecting rod 12 and the energy storage spring 13 cooperate to provide telescopic capability, satisfying the condition of position change caused by spring compression and release.

[0019] The other end of the output drive shaft 4 passes through the base plate 1 of the frame.

[0020] like Figure 4 The transmission stop 6 abuts against the pin 14 on one side, and the transmission stop 6 pushes the crank 7 through the pin 14.

[0021] The motor 10 is fixed on the base plate 1 of the frame.

[0022] like Figure 5 The electromagnetic trip unit 16 includes a housing, an iron core, a limiting shaft, a coil, a limiting pad, a limiting plate, and a spring. The housing 17 is bolted to the frame panel 3 at both ends. An iron core 18 is bolted to the inside of the housing 17. A limiting shaft 19 is located at the center of the iron core 18, and a coil 20 is located on the outside of the limiting shaft 19. A limiting pad 21 and a limiting plate 22 are sequentially fitted onto one side of the limiting shaft 19. One end of the limiting shaft 19 passes through the frame panel 3, and the other end passes through the housing 17. A spring 23 is fitted in the middle of the limiting shaft 19. The limiting pad 21 can drive the limiting shaft 19 to move vertically via the spring 23.

[0023] The crank 7 is equipped with a contact plate 15, which is L-shaped. For example... Figure 6 After the crank 7 rotates, one side of the contact plate 16 can abut against one end of the limiting shaft 20 of the electromagnetic trip unit 17.

[0024] In use, the worm gear 9 and worm wheel 8 are driven by the motor 10 or manually, which in turn drives the transmission stop 6. The transmission stop 6 pushes the crank 7 to rotate and compresses the energy storage spring 13 until the crank 7 moves against the limiting shaft 19 of the electromagnetic trip unit 16, and the energy storage spring 13 is compressed and energy is stored. When release is required, the coil 20 on the electromagnetic trip unit 16 provides a signal and flows current, attracting the limiting pad 21 outward. The limiting pad 21 drives the limiting shaft 19 to move, so that the crank 7 is no longer blocked by the limiting shaft 19, the energy storage spring 13 is compressed and energy is released, the telescopic connecting rod 12 drives the intermediate transmission shaft 5, and the intermediate transmission shaft 5 drives the output transmission shaft 4, completing the instantaneous torque output of the mechanism. This realizes the requirement that the fast grounding switch does not release energy after storage according to some working conditions and tests, and can be controlled by an electrical signal to close, thus improving stability.

Claims

1. A fast grounding switch mechanism with an electromagnetic trip unit, comprising a frame base plate (1), a support column (2), and a frame panel (3), wherein the frame base plate (1) is fixedly connected to the frame panel (3) via the support column (2), characterized in that: The frame base plate (1) is provided with an output drive shaft (4). One end of the output drive shaft (4) is fixed with an intermediate rotating shaft (5). The intermediate rotating shaft (5) is provided with a turbine (8), a transmission stop (6) and a crank (7) in sequence from near the frame base plate (1). A worm gear (9) is fitted on one side of the turbine (8). The worm gear (9) and the turbine (8) mesh with each other for transmission. One end of the worm gear (9) is connected to the output end of the motor (10). One end of the crank (7) is fixedly connected to one end of the telescopic connecting rod (12) through a pin (14). The telescopic connecting rod (12) is fitted with an energy storage spring (13). The other end of the telescopic connecting rod (12) is provided with a fixing post (11). The other end of the fixing post is fixed on the frame base plate (1) below the turbine (8). An electromagnetic trip device (16) is installed on the frame panel (3).

2. The fast grounding switch mechanism with an electromagnetic trip unit according to claim 1, characterized in that: The other end of the output drive shaft (4) passes through the frame base plate (1).

3. The fast grounding switch mechanism with an electromagnetic trip unit according to claim 1, characterized in that: The motor (10) is fixed on the base plate (1) of the frame.

4. A fast grounding switch mechanism with an electromagnetic trip unit according to claim 1, characterized in that: The transmission stop (6) and the pin (14) abut against each other on one side.

5. A fast grounding switch mechanism with an electromagnetic trip unit according to claim 1, characterized in that: The crank (7) is provided with a contact plate (15), which is L-shaped.

6. A fast grounding switch mechanism with an electromagnetic trip unit according to claim 1, characterized in that: The electromagnetic trip device (16) includes a housing (17), an iron core (18), a limiting shaft (19), a coil (20), a limiting pad (21), a limiting plate (22), and a spring (23). The two ends of the housing (17) are fixed to the frame panel (3) by bolts. The iron core (18) is fixed to the inside of the housing (17) by bolts. The limiting shaft (19) is located in the center of the iron core (18), and the coil (20) is located on the outside of the limiting shaft (19). The limiting pad (21) and the limiting plate (22) are sequentially fitted on one side of the limiting shaft (19). One end of the limiting shaft (19) passes through the frame panel (3), and the other end passes through the housing (17). The spring (23) is fitted in the middle section of the limiting shaft (19).

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