Multi-point grounding current limiting device

Abstract

The invention discloses a multi-point grounding current limiting device, and relates to the technical field of power transmission line construction, the multi-point grounding current limiting device comprises a placement frame and further comprises a protection assembly, a grounding rod is fixedly installed at the bottom of the placement frame, a placement plate is fixedly installed on the inner wall of the placement frame, and a placement rod is fixedly installed at the top of the placement plate; lifting equipment is arranged on the circumferential surface of the placement rod, a signal receiver is fixedly mounted at the top of the lifting equipment, a current limiting assembly is arranged at the top of the placement plate, a fusing assembly is arranged at the top of the placement plate, a grounding connecting wire is arranged between the fusing assembly and the current limiting assembly, and a limiting frame is fixedly mounted at the top of the placement plate. According to the grounding current limiting device, the L-shaped plate moves downwards to drive the limiting plate to move downwards, the limiting plate moves downwards to make contact with the grounding connecting wire and extrude and fix the grounding connecting wire, the optimal state of the grounding connecting wire can be kept by avoiding bending or pulling, low grounding resistance is ensured, and therefore the efficiency and safety of the grounding current limiting device are improved.

Description

Technical Field

[0001] The invention relates to the technical field of power transmission line construction, in particular to a multi-point grounding current limiting device. Background Art

[0002] The multi-point grounding current limiting device usually consists of a signal receiver, a current limiting device, a fuse device and a placement frame.

[0003] The patent with patent announcement number CN112652896B relates to a complete set of current limiting grounding device for a power and communication shared tower. There is no electrical connection between the two sets of grounding devices. When there is an overvoltage in the power line, there is a high potential difference between the grounding device of the power tower and the communication base station, which easily poses a threat to the equipment and maintenance personnel. In severe cases, it will cause damage to the communication equipment. The following scheme is now proposed, including a mounting frame, on the inner walls of the four sides of the mounting frame, there are tower foundation components fixedly connected, and a fixing rod is fixedly connected to the inner wall of one side of the mounting frame. This patent solves the problem that the potential difference between the two independent grounding systems in the case of overvoltage in the power line causes damage to the communication equipment. At the same time, a current limiting device is installed on the grounding connection line on the inner wall of the fixed frame. When the grounding current exceeds the limit value, the fuse component will disconnect the grounding connection line to protect the safe operation of the equipment of the communication base station.

[0004] In the above patent, a current limiting device is installed on the grounding connection line on the inner wall of the fixed frame. When the grounding current exceeds the limit value, the fuse component will disconnect the grounding connection line to protect the safe operation of the equipment of the communication base station. However, it is difficult to prevent the grounding connection line from being bent and pulled due to external force during wiring. If the grounding connection line is excessively pulled or bent during the wiring process, the insulation of the grounding connection line will be damaged or the metal wire will be broken, making it impossible for the equipment to be effectively grounded, thereby creating an electrical safety hazard. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a multi-point grounding current limiting device, which solves the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a multi-point grounding current limiting device, including a placement frame and a protective component, a grounding rod is fixedly installed at the bottom of the placement frame, a placement plate is fixedly installed on the inner wall of the placement frame, a placement rod is fixedly installed on the top of the placement plate, a lifting device is arranged on the circumferential surface of the placement rod, a signal receiver is fixedly installed on the top of the lifting device, a current limiting component is arranged on the top of the placement plate, a fuse component is arranged on the top of the placement plate, a grounding connection line is arranged between the fuse component and the current limiting component, a limit frame is fixedly installed on the top of the placement plate, the top of the limit frame slides through the limit rod, a limit plate is fixedly installed on the bottom of the limit rod, an L-shaped plate is fixedly installed on the circumferential surface of the limit rod, an elastic telescopic rod is fixedly penetrated by the inner and outer walls of the placement frame, a protective plate is fixedly installed on the free end of the elastic telescopic rod, a protective groove is opened on the front side of the protective plate, the L-shaped plate moves downward to drive the limit plate to move downward, the limit plate moves downward to contact the grounding connection line and squeezes and fixes the grounding connection line.

[0007] According to the above technical solution, a No. 1 spring is arranged between the L-shaped plate and the limit frame, and the No. 1 spring can drive the L-shaped plate to reset. A limit groove is arranged at the bottom of the limit plate, and a linkage plate is fixedly installed at the bottom left side of the limit rod. The limit plate is limited by the L-shaped plate and cannot excessively squeeze the grounding line.

[0008] According to the above technical solution, a button is fixedly installed at the bottom of the placement frame, and the lifting device can be adjusted by the button. The button is electrically connected to the lifting device, and the L-shaped plate is in contact with the protective plate.

[0009] According to the above technical solution, an anti-corrosion component for absorbing condensed water is provided on the inner wall of the placement frame, an adjustment component is provided inside the placement frame, the anti-corrosion component includes a storage frame, a T-shaped plate and a sponge block, the storage frame is fixedly installed on the inner wall of the placement frame, the T-shaped plate is slidably installed on the inner wall of the storage frame, the sponge block is arranged on the inner wall of the storage frame, a storage tube is fixedly installed on the bottom of the placement plate, an arc panel is fixedly installed on the inner wall of the storage frame, a moving rod is slidably penetrated through the inner and outer walls of the storage frame, a moving plate is fixedly installed on the right side of the moving rod, and a conduit is fixedly installed on the bottom of the storage frame, and the condensed water generated by the temperature difference between day and night can be collected into the storage frame through the sponge block, thereby preventing the condensed water generated by the temperature difference between day and night from accumulating inside the placement frame and causing corrosion to the grounding wire.

[0010] According to the above technical solution, the sponge block contacts the storage tube, the sponge block contacts the top of the placement plate, and a No. 2 spring is arranged between the storage frame and the T-shaped plate, and the No. 2 spring can drive the T-shaped plate to reset.

[0011] According to the above technical solution, a No. 3 spring is arranged between the movable plate and the storage frame, and the No. 3 spring can drive the movable plate to reset. The left side of the T-shaped plate is set as an inclined surface, and a movable groove is set on the right side of the movable plate. The arc panel is elastic.

[0012] According to the above technical solution, the adjustment component includes a U-shaped tube, a connecting plate, a connecting rod, a connecting frame, a square hole and a connecting hole. The connecting frame moves to the left so that the square hole is aligned with the connecting hole. The square hole is aligned with the connecting hole to remove the obstruction of the button. The U-shaped tube is fixedly penetrated through the inner and outer walls of the placement frame, the connecting plate is slidably installed on the inner wall of the U-shaped tube, the connecting rod is fixedly installed on the left side of the connecting plate, the connecting frame is slidably installed on the inner wall of the U-shaped tube, the square hole is opened at the top of the connecting frame, and the connecting hole is opened on the circumferential surface of the U-shaped tube.

[0013] According to the above technical solution, a No. 4 spring is arranged between the U-shaped tube and the connecting plate, and the No. 4 spring can drive the connecting plate to reset. A supplement is arranged inside the U-shaped tube, and the connecting frame is in contact with the button.

[0014] The present invention provides a multi-point grounding current limiting device. It has the following beneficial effects: (1) The multi-point grounding current limiting device drives the limit plate to move downward by the L-shaped plate moving downward. The limit plate moves downward to contact the grounding wire and squeezes and fixes the grounding wire. By avoiding bending or pulling, the grounding wire can be kept in the best state, ensuring a lower grounding resistance, thereby improving the efficiency and safety of the grounding current limiting device.

[0015] (2) The multi-point grounding current limiting device contacts the inner wall of the protection groove through the L-shaped plate and limits the limit rod and the limit plate. The limit plate cannot excessively squeeze the grounding connection line due to the limiting effect of the L-shaped plate. Excessive squeezing of the grounding connection line will cause poor contact or electrical connection interruption. Through appropriate limiting action, the grounding connection line can maintain appropriate tension and position, thereby ensuring stable docking of each connection point, thereby achieving better electrical stability and lower grounding resistance.

[0016] (3) The multi-point grounding current limiting device can collect the condensed water generated by the temperature difference between day and night into the storage frame and discharge it through the sponge block, thereby preventing the condensed water generated by the temperature difference between day and night from accumulating inside the storage frame and causing corrosion to the grounding connection line. If the condensed water accumulates on the surface of the grounding connection line for a long time, it will cause the insulation layer of the grounding connection line to be damaged or the metal to be corroded, thereby affecting the normal operation of the grounding system. The sponge block absorbs moisture and drains water, which can effectively avoid the accumulation of water near the grounding connection line and prevent the occurrence of corrosion.

[0017] (4) The multi-point grounding current limiting device generates slow deformation when the arc plate is impacted by the T-shaped plate. The slow deformation of the arc plate makes the T-shaped plate reset slowly. The slow reset of the T-shaped plate helps to protect the placement frame from excessive vibration when the T-shaped plate is reset. By avoiding excessive vibration of the T-shaped plate, the loosening of the grounding connection caused by vibration can be effectively reduced, thereby ensuring that the grounding connection always remains stable.

[0018] (5) The multi-point grounding current limiting device moves the connecting frame to the left so that the square hole is aligned with the connecting hole. The square hole is aligned with the connecting hole to remove the cover on the button. By blocking the button with the square hole and the connecting hole, it can effectively prevent misoperation during the wiring process. Then, the staff can perform wiring according to the correct operating procedures to avoid mis-touch and cause the adjustment signal receiver to make an incorrect position adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the placement frame of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the structure enlargement of part A; Figure 4 This is a schematic diagram of the placement structure of the frame and the U-shaped tube of the present invention; Figure 5 For the present invention Figure 4 A schematic diagram of the structure of part B in the middle is enlarged; Figure 6 This is a schematic diagram of the internal structure of the storage frame of the present invention; Figure 7 It is a schematic diagram of the internal structure of the U-shaped tube of the present invention.

[0020] In the figure: 1. placement frame; 2. grounding rod; 3. placement rod; 4. lifting equipment; 5. current limiting component; 6. fuse component; 7. grounding connection line; 8. limit frame; 9. limit rod; 10. limit plate; 11. L-shaped plate; 12. elastic telescopic rod; 13. protective plate; 14. protective groove; 15. linkage plate; 16. placement plate; 171. storage frame; 172. T-shaped plate; 173. sponge block; 174. storage tube; 175. arc panel; 176. moving rod; 177. moving plate; 178. conduit; 181. U-shaped tube; 182. connecting plate; 183. connecting rod; 184. connecting frame; 185. button; 186. square hole; 187. connecting hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in 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. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figure 1-Figure 7 An embodiment of the present invention is: a multi-point grounding current limiting device, including a placement frame 1, and also including a protective component, a grounding rod 2 is fixedly installed at the bottom of the placement frame 1, a placement plate 16 is fixedly installed on the inner wall of the placement frame 1, a placement rod 3 is fixedly installed on the top of the placement plate 16, a lifting device 4 is arranged on the circumferential surface of the placement rod 3, a signal receiver is fixedly installed on the top of the lifting device 4, a current limiting component 5 is arranged on the top of the placement plate 16, a fuse component 6 is arranged on the top of the placement plate 16, and a grounding connection line 7 is arranged between the fuse component 6 and the current limiting component 5, A limit frame 8 is fixedly installed on the top of the placement plate 16, and the top of the limit frame 8 slides through the limit rod 9, and a limit plate 10 is fixedly installed on the bottom of the limit rod 9. An L-shaped plate 11 is fixedly installed on the circumferential surface of the limit rod 9, and an elastic telescopic rod 12 is fixedly penetrated by the inner and outer walls of the placement frame 1, and a protective plate 13 is fixedly installed on the free end of the elastic telescopic rod 12. A protective groove 14 is opened on the front side of the protective plate 13. By avoiding bending or pulling, the grounding connection 7 can be kept in the best state, ensuring a lower grounding resistance, thereby improving the efficiency and safety of the grounding current limiting device.

[0023] A No. 1 spring is arranged between the L-shaped plate 11 and the limit frame 8, and the No. 1 spring can drive the L-shaped plate 11 to reset. A limit groove is provided at the bottom of the limit plate 10, and a linkage plate 15 is fixedly installed at the bottom left of the limit rod 9. Through appropriate limiting action, the grounding line 7 can maintain appropriate tension and position, thereby ensuring stable docking of each connection point, thereby achieving better electrical stability and lower grounding resistance.

[0024] A button 185 is fixedly installed at the bottom of the placement frame 1, and the lifting device 4 can be adjusted by the button 185. The button 185 is electrically connected to the lifting device 4, and the L-shaped plate 11 is in contact with the protective plate 13.

[0025] When this embodiment is working: when wiring the grounding connection line 7 inside the placement frame 1, manually connect the two ends of the grounding connection line 7 to the current limiting component 5 and the fuse component 6 respectively. After the grounding connection line 7 is connected stably, manually press the limit rod 9 to move downward. The limit rod 9 moves downward to drive the L-shaped plate 11 to move downward. The L-shaped plate 11 moves downward to squeeze the No. 1 spring. The No. 1 spring is squeezed by the L-shaped plate 11 to produce deformation and accumulate force. At the same time, the L-shaped plate 11 moves downward to drive the limit plate 10 to move downward. The limit plate 10 moves downward to contact the grounding connection line 7 and squeezes and fixes the grounding connection line 7. When the L-shaped plate 11 moves downward and aligns with the protective groove 14, the free end of the elastic telescopic rod 12 moves toward the direction close to the limit rod 9 under the action of its own elastic force. The free end of the elastic telescopic rod 12 moves toward the direction close to the limit rod 9 so that the L-shaped plate 11 and the protective groove 14 are aligned. The inner wall of the groove 14 contacts, the L-shaped plate 11 contacts the inner wall of the protective groove 14 and limits the limit rod 9 and the limit plate 10. The limit plate 10 is limited by the L-shaped plate 11 and cannot excessively squeeze the grounding connection 7. When the position of the grounding connection 7 needs to be adjusted, the protective plate 13 is manually pushed to move away from the limit rod 9. The protective plate 13 moves away from the limit rod 9 and releases the limit on the L-shaped plate 11. After the limit of the L-shaped plate 11 is released, the L-shaped plate 11 moves upward under the elastic force of the No. 1 spring. The upward movement of the L-shaped plate 11 drives the limit plate 10 to move upward. The limit plate 10 moves upward to break away from the contact with the grounding connection 7 and releases the fixation of the grounding connection 7, thereby facilitating the position adjustment of the grounding connection 7, and when the grounding current exceeds the limit value, the fuse component 6 will disconnect the grounding connection 7, thereby protecting the safe operation of the equipment.

[0026] See also Figure 1-Figure 7 On the basis of the above embodiment, in another embodiment of the present invention, an anti-corrosion component for absorbing condensed water is provided on the inner wall of the placement frame 1, an adjustment component is provided inside the placement frame 1, the anti-corrosion component includes a storage frame 171, a T-shaped plate 172 and a sponge block 173, the storage frame 171 is fixedly installed on the inner wall of the placement frame 1, the T-shaped plate 172 is slidably installed on the inner wall of the storage frame 171, the sponge block 173 is arranged on the inner wall of the storage frame 171, a storage tube 174 is fixedly installed on the bottom of the placement plate 16, an arc panel 175 is fixedly installed on the inner wall of the storage frame 171, a moving rod 176 is slidably penetrated through the inner and outer walls of the storage frame 171, a moving plate 177 is fixedly installed on the right side of the moving rod 176, and a conduit 178 is fixedly installed on the bottom of the storage frame 171. The sponge block 173 absorbs moisture and drains water, which can effectively avoid the accumulation of moisture near the grounding connection line 7 and prevent the occurrence of corrosion.

[0027] The sponge block 173 is in contact with the storage tube 174, and the sponge block 173 is in contact with the top of the placement plate 16. A No. 2 spring is arranged between the storage frame 171 and the T-shaped plate 172. The No. 2 spring can drive the T-shaped plate 172 to reset. By avoiding excessive vibration of the T-shaped plate 172, the loosening of the grounding connection line 7 caused by vibration can be effectively reduced, thereby ensuring that the grounding connection line 7 always remains stable.

[0028] A No. 3 spring is arranged between the movable plate 177 and the storage frame 171, and the No. 3 spring can drive the movable plate 177 to reset. The left side of the T-shaped plate 172 is arranged as an inclined surface, and a movable groove is arranged on the right side of the movable plate 177. The arc panel 175 is elastic, and the elasticity of the arc panel 175 can buffer the T-shaped plate 172.

[0029] The adjustment component includes a U-shaped tube 181, a connecting plate 182, a connecting rod 183, a connecting frame 184, a square hole 186 and a connecting hole 187. The U-shaped tube 181 is fixedly passed through the inner and outer walls of the placement frame 1, the connecting plate 182 is slidably installed on the inner wall of the U-shaped tube 181, the connecting rod 183 is fixedly installed on the left side of the connecting plate 182, the connecting frame 184 is slidably installed on the inner wall of the U-shaped tube 181, the square hole 186 is opened on the top of the connecting frame 184, and the connecting hole 187 is opened on the circumferential surface of the U-shaped tube 181. The shielding effect of the square hole 186 and the connecting hole 187 can effectively prevent misoperation during the wiring process, and then the staff can perform wiring according to the correct operating procedures to avoid mistouch and cause the adjustment signal receiver to make an incorrect position adjustment.

[0030] A No. 4 spring is arranged between the U-shaped tube 181 and the connecting plate 182, and the No. 4 spring can drive the connecting plate 182 to reset. A supplement is arranged inside the U-shaped tube 181, and the supplement is liquid. The connecting frame 184 is in contact with the button 185. Rubber pistons are arranged at the end points where the connecting frame 184 and the U-shaped tube 181 are connected, and at the end points where the connecting plate 182 and the U-shaped tube 181 are connected. The rubber piston fits tightly to the inner wall of the U-shaped tube 181. The rubber piston can ensure the sealing effect between the connecting frame 184, the connecting plate 182 and the U-shaped tube 181, and prevent the supplement from leaking from the connection between the connecting frame 184 and the U-shaped tube 181 and the connection between the connecting plate 182 and the U-shaped tube 181.

[0031] When this embodiment is working, the limit rod 9 moves downward to drive the linkage plate 15 to move downward, the linkage plate 15 moves downward and contacts the inclined surface of the T-shaped plate 172 and squeezes the T-shaped plate 172, the T-shaped plate 172 is squeezed by the linkage plate 15 and moves in the direction close to the third spring, the T-shaped plate 172 moves in the direction close to the third spring to pull the second spring, the second spring is pulled by the T-shaped plate 172 to deform and accumulate force, and at the same time the T-shaped plate 172 moves in the direction close to the third spring and contacts the sponge block 173 and squeezes the sponge block 173, the sponge block 173 is squeezed by the T-shaped plate 172 to deform and discharge the condensed water adsorbed by itself, and the condensed water discharged from the inside of the sponge block 173 is discharged from the inside of the storage frame 171 through the conduit 178 under the action of its own gravity. After the limit rod 9 moves upward, it drives the linkage plate 15 to move upward and reset. The linkage plate 15 moves upward and resets to break away from the contact with the T-shaped plate 172 and release the limit on the T-shaped plate 172. After the limit of the T-shaped plate 172 is released, the T-shaped plate 172 moves and resets in the direction away from the No. 3 spring under the elastic force of the No. 2 spring. The T-shaped plate 172 moves and resets to contact the arc panel 175 and hits the arc panel 175. The arc panel 175 is slowly deformed by the impact of the T-shaped plate 172. The slow deformation of the arc panel 175 makes the T-shaped plate 172 can only reset slowly, and the condensed water generated by the temperature difference between day and night can be collected into the storage frame 171 through the sponge block 173, thereby preventing the condensed water generated by the temperature difference between day and night from accumulating in the placement frame 1 and corroding the grounding connection line 7.

[0032] The T-shaped plate 172 moves toward the direction close to the third spring and contacts with the moving rod 176 and squeezes the moving rod 176. The moving rod 176 is squeezed by the T-shaped plate 172 and drives the moving plate 177 to move to the right. The moving plate 177 moves to the right and contacts with the connecting rod 183 and squeezes the connecting rod 183. The connecting rod 183 is squeezed by the moving plate 177 and moves away from the storage frame 171. The connecting rod 183 moves in the direction away from the storage frame 171 and drives the connecting plate 182 to move. The connecting plate 182 moves to pull the fourth spring. The fourth spring is pulled by the connecting plate 182 to be deformed and accumulate force. At the same time, the connecting plate 182 moves in the direction away from the storage frame 171 to squeeze the supplement inside the U-shaped tube 181. The supplement inside the U-shaped tube 181 is squeezed by the connecting plate 182 and moves toward the direction close to the button 185. The supplement inside the U-shaped tube 181 moves toward the direction close to the button 185 to squeeze the connecting frame 184. The connecting frame 184 is squeezed by the supplement inside the U-shaped tube 181 and moves to the left. The connecting frame 184 moves to the left so that the square hole 186 is aligned with the connecting hole 187. The square hole 186 is aligned with the connecting hole 187 to remove the obstruction of the button 185. After the obstruction of the button 185 is removed, the button 185 is manually pressed to drive the lifting device 4 to move vertically. The vertical movement of the lifting device 4 drives the signal receiver to adjust its position. The position is adjusted by adjusting the signal receiver, thereby better maintaining the stability of the equipment operation.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-point grounding current limiting device, comprising a placement frame (1), characterized in that: It also includes a protective component, wherein a grounding rod (2) is fixedly mounted on the bottom of the placement frame (1), a placement plate (16) is fixedly mounted on the inner wall of the placement frame (1), a placement rod (3) is fixedly mounted on the top of the placement plate (16), a lifting device (4) is arranged on the circumferential surface of the placement rod (3), a signal receiver is fixedly mounted on the top of the lifting device (4), a current limiting component (5) is arranged on the top of the placement plate (16), a fuse component (6) is arranged on the top of the placement plate (16), an anti-corrosion component for absorbing condensed water is arranged on the inner wall of the placement frame (1), and a An adjustment component is provided, a grounding connection line (7) is provided between the fuse component (6) and the current limiting component (5), a limit frame (8) is fixedly installed on the top of the placement plate (16), a limit rod (9) is slidably penetrated through the top of the limit frame (8), a limit plate (10) is fixedly installed on the bottom of the limit rod (9), an L-shaped plate (11) is fixedly installed on the circumferential surface of the limit rod (9), an elastic telescopic rod (12) is fixedly penetrated through the inner and outer walls of the placement frame (1), a protective plate (13) is fixedly installed on the free end of the elastic telescopic rod (12), and a protective groove (14) is provided on the front side of the protective plate (13).

2. A multi-point grounding current limiting device according to claim 1, characterized in that: A No. 1 spring is arranged between the L-shaped plate (11) and the limit frame (8), a limit slot is provided at the bottom of the limit plate (10), and a linkage plate (15) is fixedly mounted at the bottom of the left side of the limit rod (9).

3. A multi-point grounding current limiting device according to claim 2, characterized in that: A button (185) is fixedly mounted on the bottom of the placement frame (1); the button (185) is electrically connected to the lifting device (4); and the L-shaped plate (11) is in contact with the protective plate (13).

4. A multi-point grounding current limiting device according to claim 3, characterized in that: The anti-corrosion component comprises a storage frame (171), a T-shaped plate (172) and a sponge block (173); the storage frame (171) is fixedly mounted on the inner wall of the placement frame (1); the T-shaped plate (172) is slidably mounted on the inner wall of the storage frame (171); the sponge block (173) is arranged on the inner wall of the storage frame (171); a storage tube (174) is fixedly mounted on the bottom of the placement plate (16); an arc panel (175) is fixedly mounted on the inner wall of the storage frame (171); a moving rod (176) is slidably penetrated through the inner and outer walls of the storage frame (171); a moving plate (177) is fixedly mounted on the right side of the moving rod (176); and a guide tube (178) is fixedly mounted on the bottom of the storage frame (171).

5. A multi-point grounding current limiting device according to claim 4, characterized in that: The sponge block (173) is in contact with the storage tube (174), the sponge block (173) is in contact with the top of the placement plate (16), and a No. 2 spring is provided between the storage frame (171) and the T-shaped plate (172).

6. A multi-point grounding current limiting device according to claim 5, characterized in that: A No. 3 spring is provided between the movable plate (177) and the storage frame (171); the left side of the T-shaped plate (172) is provided as an inclined surface; the right side of the movable plate (177) is provided with a movable groove; and the arc panel (175) is elastic.

7. A multi-point grounding current limiting device according to claim 6, characterized in that: The adjustment assembly comprises a U-shaped tube (181), a connecting plate (182), a connecting rod (183), a connecting frame (184), a square hole (186) and a connecting hole (187); the U-shaped tube (181) is fixedly passed through the inner and outer walls of the placement frame (1); the connecting plate (182) is slidably mounted on the inner wall of the U-shaped tube (181); the connecting rod (183) is fixedly mounted on the left side of the connecting plate (182); the connecting frame (184) is slidably mounted on the inner wall of the U-shaped tube (181); the square hole (186) is provided at the top of the connecting frame (184); and the connecting hole (187) is provided on the circumferential surface of the U-shaped tube (181).

8. A multi-point grounding current limiting device according to claim 7, characterized in that: A No. 4 spring is arranged between the U-shaped tube (181) and the connecting plate (182), a supplement is arranged inside the U-shaped tube (181), and the connecting frame (184) is in contact with the button (185).

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