A multi-point grounding current limiting device

Abstract

The present invention discloses a multi-point grounding current-limiting device, which relates to the technical field of transmission line construction. It includes a placement frame and also includes a protection 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 at the top of the lifting device. A current-limiting component is arranged on the top of the placement plate. A fusing component is arranged on the top of the placement plate. A grounding connection line is arranged between the fusing component and the current-limiting component. A limiting frame is fixedly installed on the top of the placement plate. The downward movement of the L-shaped plate drives the limiting plate to move downward. The downward movement of the limiting plate contacts the grounding connection line and squeezes and fixes the grounding connection line. By avoiding bending or pulling, the best state of the grounding connection line can be maintained, ensuring a lower grounding resistance, thereby improving the efficiency and safety of the grounding current-limiting device.

Description

Technical Field

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

[0002] A multi-point grounding current-limiting device generally consists of parts such as a signal receiver, a current-limiting device, a fusing device, and a placement frame.

[0003] The patent with the patent publication number CN112652896B relates to a complete set of current-limiting grounding devices for sharing a tower between power and communication. Aiming at the problem that there is no electrical connection between two sets of grounding devices, when there is an overvoltage situation in the power line, there is a high potential difference between the grounding devices of the power tower and the communication base station, which is likely to pose a threat to equipment and maintenance personnel, and may even cause damage to communication equipment in severe cases. The following solution is proposed, including a mounting frame, on the inner walls of the four sides of the mounting frame are fixedly connected with tower foundation components, and on one inner wall of the mounting frame is fixedly connected with a fixed rod. This patent solves the problem of damage to communication equipment caused by the potential difference between two independent grounding systems under the condition of overvoltage in the power line. At the same time, a current-limiting device is installed on the grounding connection line on the inner wall of the fixing frame. When the grounding current exceeds the limit value, the fusing component will disconnect the grounding connection line to protect the safe operation of the equipment in the communication base station.

[0004] In the above patent, by installing a current-limiting device on the grounding connection line on the inner wall of the fixing frame, when the grounding current exceeds the limit value, the fusing component will disconnect the grounding connection line to protect the safe operation of the equipment in the communication base station. However, it is difficult to prevent the grounding connection line from being bent and pulled by external forces during wiring. If the grounding connection line is excessively pulled or bent during the wiring process, it will cause insulation damage of the grounding connection line or breakage of the metal wire, resulting in ineffective grounding of the equipment and further generating electrical safety hazards. Summary of the Invention

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

[0006] To achieve the above object, the present invention is realized through the following technical solutions: A multi-point grounding current-limiting device includes a placement frame, and further includes a protection 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 at the top of the lifting device. A current-limiting component is arranged on the top of the placement plate. A fusing component is arranged on the top of the placement plate. A grounding connection line is arranged between the fusing component and the current-limiting component. A limiting frame is fixedly installed on the top of the placement plate. A limiting rod slidably penetrates through the top of the limiting frame. A limiting plate is fixedly installed at the bottom of the limiting rod. An L-shaped plate is fixedly installed on the circumferential surface of the limiting rod. An elastic telescopic rod fixedly penetrates through the inner and outer walls of the placement frame. A protection plate is fixedly installed at the free end of the elastic telescopic rod. A protection groove is formed on the front side of the protection plate. When the L-shaped plate moves downward, it drives the limiting plate to move downward. The limiting 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 first spring is arranged between the L-shaped plate and the limiting frame. The first spring can drive the L-shaped plate to reset. A limiting groove is formed at the bottom of the limiting plate. A linkage plate is fixedly installed at the bottom left of the limiting rod. The limiting plate is limited by the L-shaped plate and cannot excessively squeeze the grounding connection line.

[0008] According to the above technical solution, a button is fixedly installed at the bottom of the placement frame. The lifting device can be adjusted through the button. The button is electrically connected to the lifting device. The L-shaped plate contacts the protection plate.

[0009] According to the above technical solution, an anti-corrosion component for absorbing condensed water is arranged on the inner wall of the placement frame. An adjustment component is arranged 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 pipe is fixedly installed at the bottom of the placement plate. An arc-shaped plate is fixedly installed on the inner wall of the storage frame. A moving rod slidably penetrates through the inner and outer walls of the storage frame. A moving plate is fixedly installed on the right side of the moving rod. A conduit is fixedly installed at the bottom of the storage frame. The sponge block can collect the condensed water generated by the day-night temperature difference into the storage frame, thereby preventing the condensed water generated by the day-night temperature difference from accumulating inside the placement frame and corroding the grounding connection line.

[0010] According to the above technical solution, the sponge block contacts the storage pipe and the top of the placement plate. A second spring is arranged between the storage frame and the T-shaped plate. The second spring can drive the T-shaped plate to reset.

[0011] According to the above technical solution, a third spring is arranged between the moving plate and the storage frame, and the third spring can drive the moving plate to reset. The left side of the T-shaped plate is set as an inclined surface, a moving groove is arranged on the right side of the moving plate, and the arc-shaped panel is elastic.

[0012] According to the above technical solution, the adjusting assembly includes a U-shaped tube, a connecting plate, a connecting rod, an adapter frame, a square hole and an adapter hole. When the adapter frame moves to the left, the square hole is aligned with the adapter hole, and the alignment of the square hole and the adapter hole releases the shielding 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 adapter frame is slidably installed on the inner wall of the U-shaped tube. The square hole is opened at the top of the adapter frame, and the adapter hole is opened on the circumferential surface of the U-shaped tube.

[0013] According to the above technical solution, a fourth spring is arranged between the U-shaped tube and the connecting plate, and the fourth spring can drive the connecting plate to reset. A supplement is arranged inside the U-shaped tube, and the adapter frame contacts the button.

[0014] The present invention provides a multi-point grounding current-limiting device. It has the following beneficial effects:

[0015] (1) For this multi-point grounding current-limiting device, when the L-shaped plate moves downward, it drives the limiting plate to move downward. The limiting plate moves downward to contact the grounding connection wire and squeeze and fix the grounding connection wire. By avoiding bending or pulling, the best state of the grounding connection wire can be maintained, ensuring a lower grounding resistance, thereby improving the efficiency and safety of the grounding current-limiting device.

[0016] (2) For this multi-point grounding current-limiting device, when the L-shaped plate contacts the inner wall of the protection groove and limits the limiting rod and the limiting plate, the limiting plate cannot excessively squeeze the grounding connection wire due to the limiting effect of the L-shaped plate. If the grounding connection wire is excessively squeezed, it will cause poor contact or electrical connection interruption. Through appropriate limiting, the grounding connection wire can maintain appropriate tension and position, thereby ensuring stable docking of each connection point, and thus achieving better electrical stability and lower grounding resistance.

[0017] (3) For this multi-point grounding current-limiting device, the sponge block can collect the condensed water generated by the day-night temperature difference into the storage frame and discharge it, thereby preventing the condensed water generated by the day-night temperature difference from accumulating inside the placement frame and corroding the grounding connection wire. If the condensed water accumulates on the surface of the grounding connection wire for a long time, it will cause damage to the insulating layer of the grounding connection wire or metal corrosion, and further affect the normal operation of the grounding system. By the moisture absorption and drainage of the sponge block, the accumulation of moisture near the grounding connection wire can be effectively avoided, and the occurrence of corrosion can be prevented.

[0018] (4) The multi-point grounding current-limiting device generates slow deformation when the arc panel is impacted by the T-shaped plate. The slow deformation of the arc panel enables the T-shaped plate to only reset slowly. The slow reset of the T-shaped plate helps to protect the placement frame from excessive vibration during the reset of the T-shaped plate. 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.

[0019] (5) The multi-point grounding current-limiting device moves the connection frame to the left to align the square hole with the connection hole. The alignment of the square hole and the connection hole removes the blockage of the button. By blocking the button with the square hole and the connection hole, misoperation during the wiring process can be effectively prevented. Thus, the staff can perform wiring according to the correct operation process and avoid incorrect position adjustment of the adjustment signal receiver caused by accidental touch. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 is a schematic diagram of the internal structure of the placement frame of the present invention;

[0022] Figure 3 of the present invention Figure 2 is an enlarged schematic diagram of the structure of part A;

[0023] Figure 4 is a schematic diagram of the positional structure of the placement frame and the U-shaped tube of the present invention;

[0024] Figure 5 of the present invention Figure 4 is an enlarged schematic diagram of the structure of part B;

[0025] Figure 6 is a schematic diagram of the internal structure of the storage frame of the present invention;

[0026] Figure 7 is a schematic diagram of the internal structure of the U-shaped tube of the present invention.

[0027] In the figure: 1. Placement frame; 2. Grounding rod; 3. Placement rod; 4. Lifting equipment; 5. Current-limiting component; 6. Fusing component; 7. Grounding connection; 8. Limiting frame; 9. Limiting rod; 10. Limiting plate; 11. L-shaped plate; 12. Elastic telescopic rod; 13. Protection plate; 14. Protection groove; 15. Linking 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. Connection frame; 185. Button; 186. Square hole; 187. Connection hole. DETAILED DESCRIPTION OF THE INVENTION

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] Please refer to Figures 1 - 7 , an embodiment of the present invention is: a multi-point grounding current-limiting device, including a placement frame 1, and further including a protection 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 at the top of the lifting device 4. A current-limiting component 5 is arranged on the top of the placement plate 16. A fusing component 6 is arranged on the top of the placement plate 16. A grounding connection wire 7 is arranged between the fusing component 6 and the current-limiting component 5. A limiting frame 8 is fixedly installed on the top of the placement plate 16. A limiting rod 9 slidably penetrates through the top of the limiting frame 8. A limiting plate 10 is fixedly installed at the bottom of the limiting rod 9. An L-shaped plate 11 is fixedly installed on the circumferential surface of the limiting rod 9. An elastic telescopic rod 12 fixedly penetrates through the inner and outer walls of the placement frame 1. A protection plate 13 is fixedly installed at the free end of the elastic telescopic rod 12. A protection groove 14 is opened on the front side of the protection plate 13. By avoiding bending or pulling, the best state of the grounding connection wire 7 can be maintained, ensuring a lower grounding resistance, thereby improving the efficiency and safety of the grounding current-limiting device.

[0030] A first spring is arranged between the L-shaped plate 11 and the limiting frame 8. The L-shaped plate 11 can be driven to reset by the first spring. A limiting groove is opened at the bottom of the limiting plate 10. A linkage plate 15 is fixedly installed at the bottom left of the limiting rod 9. Through appropriate limiting effects, the grounding connection wire 7 can be kept under appropriate tension and in an appropriate position, thereby ensuring stable docking of each connection point, and thus achieving better electrical stability and lower grounding resistance.

[0031] A button 185 is fixedly installed at the bottom of the placement frame 1. The lifting device 4 can be adjusted through the button 185. The button 185 is electrically connected to the lifting device 4. The L-shaped plate 11 is in contact with the protection plate 13.

[0032] During the operation of this embodiment: When routing the grounding connection wire 7 inside the placement frame 1, manually connect the two ends of the grounding connection wire 7 to the current-limiting component 5 and the fusing component 6 respectively. After the grounding connection wire 7 is stably connected, manually press the limiting rod 9 to move downward. The downward movement of the limiting rod 9 drives the L-shaped plate 11 to move downward. The downward movement of the L-shaped plate 11 squeezes the first spring. The first spring deforms and stores energy under the extrusion of the L-shaped plate 11. At the same time, the downward movement of the L-shaped plate 11 drives the limiting plate 10 to move downward. The downward movement of the limiting plate 10 contacts the grounding connection wire 7 and squeezes and fixes the grounding connection wire 7. When the L-shaped plate 11 moves downward and aligns with the protection groove 14, the free end of the elastic telescopic rod 12 moves toward the direction close to the limiting rod 9 under the action of its own elastic force. The movement of the free end of the elastic telescopic rod 12 toward the direction close to the limiting rod 9 causes the L-shaped plate 11 to contact the inner wall of the protection groove 14. The L-shaped plate 11 contacts the inner wall of the protection groove 14 and limits the limiting rod 9 and the limiting plate 10. The limiting plate 10 cannot excessively squeeze the grounding connection wire 7 under the limiting action of the L-shaped plate 11. When the position of the grounding connection wire 7 needs to be adjusted, manually push the protection plate 13 to move away from the limiting rod 9. The protection plate 13 moves away from the limiting rod 9 and releases the limitation on the L-shaped plate 11. After the limitation on the L-shaped plate 11 is released, the L-shaped plate 11 moves upward under the elastic force of the first spring. The upward movement of the L-shaped plate 11 drives the limiting plate 10 to move upward. The upward movement of the limiting plate 10 disengages from the contact with the grounding connection wire 7 and releases the fixation of the grounding connection wire 7, thus facilitating the position adjustment of the grounding connection wire 7. And when the grounding current exceeds the limit value, the fusing component 6 will disconnect the grounding connection wire 7, thereby protecting the safe operation of the equipment.

[0033] Please refer to Figures 1 - 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, and 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 provided on the inner wall of the storage frame 171. A storage pipe 174 is fixedly installed at the bottom of the placement plate 16. An arc-shaped panel 175 is fixedly installed on the inner wall of the storage frame 171. A moving rod 176 slidably penetrates 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. A conduit 178 is fixedly installed at the bottom of the storage frame 171. By absorbing and draining moisture through the sponge block 173, the accumulation of moisture near the grounding connection wire 7 can be effectively avoided, and the occurrence of corrosion can be prevented.

[0034] The sponge block 173 contacts the storage tube 174, and the sponge block 173 contacts the top of the placement plate 16. A second spring is provided between the storage frame 171 and the T-shaped plate 172. The second spring can drive the T-shaped plate 172 to reset, and by avoiding excessive vibration of the T-shaped plate 172, the loosening of the grounding connection wire 7 caused by vibration can be effectively reduced, thereby ensuring that the grounding connection wire 7 always remains stable.

[0035] A third spring is provided between the moving plate 177 and the storage frame 171. The third spring can drive the moving plate 177 to reset. The left side of the T-shaped plate 172 is set as an inclined surface, and a moving groove is provided on the right side of the moving plate 177. The arc-shaped panel 175 is elastic, and the arc-shaped panel 175 can buffer the T-shaped plate 172 due to its elasticity.

[0036] The adjusting assembly includes a U-shaped tube 181, a connecting plate 182, a connecting rod 183, an adapter frame 184, a square hole 186, and an adapter hole 187. The U-shaped tube 181 is fixedly penetrated 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 adapter frame 184 is slidably installed on the inner wall of the U-shaped tube 181. The square hole 186 is opened at the top of the adapter frame 184, and the adapter hole 187 is opened on the circumferential surface of the U-shaped tube 181. Through the shielding effect of the square hole 186 and the adapter hole 187, misoperation during the wiring process can be effectively prevented, so that the staff can perform wiring according to the correct operation process and avoid incorrect position adjustment of the adjustment signal receiver caused by accidental touch.

[0037] A fourth spring is provided between the U-shaped tube 181 and the connecting plate 182. The fourth spring can drive the connecting plate 182 to reset. A supplement is provided inside the U-shaped tube 181, and the supplement is a liquid. The adapter frame 184 contacts the button 185. Rubber pistons are provided at the connection points where the adapter frame 184 is connected to the U-shaped tube 181 and where the connecting plate 182 is connected to the U-shaped tube 181. The rubber pistons are in close fit with the inner wall of the U-shaped tube 181. The rubber pistons can ensure the sealing effect between the adapter frame 184, the connecting plate 182 and the U-shaped tube 181, and prevent the supplement from leaking from the connection between the adapter frame 184 and the U-shaped tube 181 and the connection between the connecting plate 182 and the U-shaped tube 181.

[0038] When this embodiment is working: The limiting 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 moves in the direction close to the third spring under the extrusion of the linkage plate 15. The T-shaped plate 172 moves in the direction close to the third spring and pulls the second spring. The second spring deforms and stores energy under the pull of the T-shaped plate 172. 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 deforms under the extrusion of the T-shaped plate 172 and discharges the condensed water adsorbed by itself. The condensed water discharged from the inside of the sponge block 173 is discharged from the inside of the storage frame 171 under the action of its own gravity through the conduit 178. When the limiting rod 9 moves upward to drive the linkage plate 15 to move upward and reset, the linkage plate 15 moves upward and resets to disengage from the contact with the T-shaped plate 172 and releases the limit on the T-shaped plate 172. After the limit on the T-shaped plate 172 is released, the T-shaped plate 172 moves in the direction away from the third spring and resets under the elastic force of the second spring. The T-shaped plate 172 moves and resets to contact the arc-shaped panel 175 and impacts the arc-shaped panel 175. The arc-shaped panel 175 deforms slowly under the impact of the T-shaped plate 172. The slow deformation of the arc-shaped panel 175 enables the T-shaped plate 172 to only reset slowly. And the condensed water generated by the day-night temperature difference can be collected into the inside of the storage frame 171 through the sponge block 173, thereby preventing the condensed water generated by the day-night temperature difference from accumulating inside the placement frame 1 and corroding the grounding connection wire 7.

[0039] The T-shaped plate 172 moves towards the direction of the third spring and contacts the moving rod 176 and squeezes the moving rod 176. The moving rod 176 drives the moving plate 177 to move to the right under the squeeze of the T-shaped plate 172. The moving plate 177 moves to the right and contacts the connecting rod 183 and squeezes the connecting rod 183. The connecting rod 183 moves away from the storage frame 171 under the squeeze of the moving plate 177. The movement of the connecting rod 183 away from the storage frame 171 drives the connecting plate 182 to move. The movement of the connecting plate 182 pulls the fourth spring. The fourth spring deforms and stores energy under the pull of the connecting plate 182. At the same time, the movement of the connecting plate 182 away from the storage frame 171 squeezes the supplement inside the U-shaped tube 181. The supplement inside the U-shaped tube 181 moves towards the direction of the button 185 under the squeeze of the connecting plate 182. The supplement inside the U-shaped tube 181 moves towards the direction of the button 185 and squeezes the connecting frame 184. The connecting frame 184 moves to the left under the squeeze of the supplement inside the U-shaped tube 181. The movement of the connecting frame 184 to the left aligns the square hole 186 with the connecting hole 187. The alignment of the square hole 186 with the connecting hole 187 releases the occlusion of the button 185. After the occlusion of the button 185 is released, manually press the button 185 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. By adjusting the position of the signal receiver, the stability of the device operation is better maintained.

[0040] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made in these embodiments without departing from the principles and spirit of the present invention. 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, characterized in that: It also includes a protective component, wherein 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, an anti-corrosion component for absorbing condensed water is arranged on the inner wall of the placement frame, an adjustment component is arranged inside the placement frame, 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, the 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, and a protective groove is opened on the front side of the protective plate; A No. 1 spring is arranged between the L-shaped plate and the limit frame, a limit slot is arranged at the bottom of the limit plate, and a linkage plate is fixedly installed at the bottom left of the limit rod; The limit rod moves downward to drive the linkage plate to move downward, and the linkage plate moves downward to contact the inclined surface of the T-shaped plate and squeeze the T-shaped plate; A button is fixedly installed at the bottom of the placement frame, the button is electrically connected to the lifting device, and the L-shaped plate is in contact with the protective plate; 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.

2. A multi-point grounding current limiting device according to claim 1, characterized in that: The sponge block is in contact with the storage tube, the sponge block is in contact with the top of the placement plate, and a No. 2 spring is arranged between the storage frame and the T-shaped plate.

3. A multi-point grounding current limiting device according to claim 2, characterized in that: A No. 3 spring is arranged between the movable plate and the storage frame, the left side of the T-shaped plate is arranged as an inclined surface, the right side of the movable plate is arranged with a movable groove, and the arc panel is elastic.

4. A multi-point grounding current limiting device according to claim 3, characterized in that: The adjustment assembly includes a U-shaped tube, a connecting plate, a connecting rod, a connecting frame, a square hole and a connecting hole. 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.

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

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