CN-122025455-A - Arc striking device of grounding switch

CN122025455ACN 122025455 ACN122025455 ACN 122025455ACN-122025455-A

Abstract

The invention relates to the technical field of grounding switch equipment, in particular to an arc striking device of a grounding switch, which comprises a supporting component, a rebound component and an arc striking rod, wherein the rebound component is provided with a connecting seat capable of rotating around a central shaft, the top of the connecting seat is fixedly connected with the arc striking rod, the bottom of the connecting seat is provided with a torsion spring pin shaft extending into a pipe sleeve shaft hole, a torsion spring is sleeved on the pin shaft, two ends of the torsion spring are respectively fixed with the connecting seat and the pipe sleeve, the bottom surface of the connecting seat is provided with a limiting end, the upper surface of the pipe sleeve is provided with an annular adjusting groove, the limiting end is positioned in the groove, after the arc striking device is arranged on a static conducting rod, the arc striking rod is contacted with the arc striking rod in the closing process, the connecting seat is driven to rotate, the torsion spring deforms and stores energy, and the arc striking rod is tightly abutted against the moving arc striking rod all the time under the action of torsion spring restoring force when an arc is opened. The invention has simple and compact structure and high operation safety, and can effectively maintain the contact pressure of the striking arc, thereby improving the operation reliability of the grounding switch and prolonging the service life of the grounding switch.

Inventors

HE SHUN
WU QIGANG
REN FEIYANG
HE SHIHUA
GUO YUNLONG

Assignees

长高电新科技股份公司
湖南长高高压开关有限公司

Dates

Publication Date: 20260512
Application Date: 20260202

Claims (10)

1. The arc striking device of the grounding switch comprises a movable conducting rod, a static conducting rod, a movable arc striking rod and an arc striking device, wherein the movable conducting rod and the static conducting rod are mutually opened and closed, the movable arc striking rod is fixedly arranged on the movable conducting rod, the arc striking device is fixedly arranged on the static conducting rod and is used for being in contact with the movable arc striking rod, the arc striking device is characterized by comprising a supporting component, a rebound component arranged on the supporting component and an arc striking rod connected on the rebound component, The rebound assembly comprises a coaxially arranged pipe sleeve with a shaft hole and a connecting seat, wherein the connecting seat is connected to the top of the pipe sleeve and can rotate around the central shaft of the rebound assembly; The arc striking rod is connected to the top of the connecting seat, a torsion spring pin shaft which is coaxial with the central shaft and extends into the shaft hole is arranged in the center of the bottom surface of the connecting seat, a torsion spring is sleeved on the torsion spring pin shaft, one end of the torsion spring is a movable end, the other end of the torsion spring is a positioning end, the movable end of the torsion spring is fixedly connected with the connecting seat, and the positioning end of the torsion spring is fixedly connected with the pipe sleeve; A limiting end is further arranged on the bottom surface of the connecting seat, an annular adjusting groove taking the central shaft of the rebound assembly as the axis is formed in the upper surface of the pipe sleeve, which is in contact with the connecting seat, and the limiting end extends into the adjusting groove; The arc striking device is arranged on the static conducting rod, before the grounding switch is switched on, the limiting end is positioned at the limiting position of one side, close to the movable arc striking rod, in the adjusting groove, at the moment, the torsion spring is in a deformed state, and the restoring force of the torsion spring is directed towards one side of the movable arc striking rod; when the switch-on is performed, the movable arc striking rod is contacted with the arc striking rod, the limiting end slides in the adjusting groove towards one side far away from the movable arc striking rod so as to drive the connecting seat to rotate around the central shaft of the rebound assembly, the deformation of the torsion spring is continuously increased, and the restoring force is enhanced; When the brake is opened, the movable arc striking rod moves away from the arc striking rod, and the arc striking rod is tightly propped against the movable arc striking rod under the action of the restoring force of the torsion spring until the limiting end moves to the limit position of one side, close to the movable arc striking rod, in the regulating groove, so that the arc striking rod always keeps a force facing one side of the movable arc striking rod.
2. The arc striking device according to claim 1, wherein the top surface of the connecting seat is fixedly connected with a fixed pressing block, the lower surface of the fixed pressing block is provided with a limit groove, and the arc striking rod is arranged in the limit groove in a penetrating manner; The fixed briquetting is circular, the length of spacing groove with the diameter of fixed briquetting is unanimous, the cross section size of spacing groove with the cross section size phase-match of striking pole.
3. The arc striking device according to claim 2, wherein a first fixing hole is formed in the fixing pressing block in a penetrating manner, and a second fixing hole matched with the first fixing hole is formed in the connecting seat in a penetrating manner; the screw thread part of the fixing screw penetrates through the first fixing hole to be connected into the second fixing hole, and the front end part of the fixing screw protrudes into the adjusting groove to form the limiting end.
4. The arc striking device according to claim 1, wherein a first mounting hole which is coaxial with and communicated with the shaft hole is formed in the middle position of the bottom surface of the pipe sleeve, a positioning hole is formed in the side edge of the first mounting hole, the connecting end of the torsion spring pin shaft is arranged in the first mounting hole in a penetrating manner, and the positioning end of the torsion spring is arranged in the positioning hole in a penetrating manner so as to be matched with the movable end of the torsion spring to provide rebound torsion force for the torsion spring pin shaft.
5. The arc striking device according to claim 4, wherein a fixing seat is convexly arranged at a middle position of the bottom surface of the connecting seat, a connecting hole and a plurality of adjusting holes are formed in the middle position of the fixing seat along the periphery of the connecting hole, the fixed end of the torsion spring pin shaft is penetrated in the connecting hole, and the movable end of the torsion spring is penetrated in the adjusting hole alternatively.
6. The arc striking device according to claim 4, wherein a second mounting hole coaxial with and communicating with the shaft hole is formed at the top surface of the tube sleeve, and the fixing seat is disposed in the second mounting hole.
7. The arc striking device according to claim 6, wherein a first shaft sleeve is sleeved at the connecting end of the torsion spring pin shaft, and the connecting end of the torsion spring pin shaft is connected with the first mounting hole through the first shaft sleeve; The fixing seat is sleeved with a second shaft sleeve, and the connecting seat is connected with the second mounting hole at the top of the sleeve through the second shaft sleeve.
8. The arc striking device of claim 7, wherein the connecting end of the torsion spring pin further protrudes out of the connecting assembly; The connecting component comprises a fixing part and a connecting part, wherein the fixing part is coaxially arranged at the connecting end of the torsion spring pin shaft, and the connecting part is connected with the supporting component.
9. The arc striking device of claim 8, wherein the support assembly comprises a support base fixedly connected to the bottom of the tube sleeve and a support rod fixedly connected to the bottom of the support base; The middle part position of the upper surface of the supporting seat is provided with a connecting perforation, and the connecting part of the connecting assembly penetrates through the connecting perforation to be connected with the supporting seat.
10. The arc striking device according to claim 9, wherein a third fixing hole is formed through a side edge of the connection perforation, and a fourth fixing hole matched with the third fixing hole is formed on the lower surface of the pipe sleeve; The fixing piece penetrates through the third fixing hole from the bottom of the supporting seat to be connected in the fourth fixing hole, so that the supporting seat is fixedly connected with the bottom of the pipe sleeve.

Description

Arc striking device of grounding switch Technical Field The invention relates to the technical field of grounding switch equipment, in particular to an arc striking device of a grounding switch. Background The arc striking rod of the grounding switch arc extinguishing chamber is a fixed stainless steel round rod, deformation and displacement are easy to occur in the outdoor long-time movement process, the grounding switch is easy to cause in the closing and opening processes, an electric arc between a movable conducting rod and a static conducting rod cannot be effectively guided to the position of the movable arc striking rod, so that the virtual contact phenomenon occurs between the arc striking rod and the movable arc striking rod, the discharge of the virtual contact position causes the ablation of the arc striking rod and the movable arc rod, the electric arc is unstable in combustion and serious in ablation, and the service life and operation safety of the grounding switch are influenced. It is therefore desirable to propose a new solution to the proposed problem. Disclosure of Invention First, the technical problem to be solved Based on the above, the invention provides the arc striking device of the grounding switch, which has high operation safety and prolongs the service life of the grounding switch. (II) technical scheme In order to solve the technical problems, the invention provides an arc striking device of a grounding switch, which comprises a movable conducting rod, a static conducting rod, a movable arc striking rod and an arc striking device, wherein the movable conducting rod and the static conducting rod are mutually opened and closed; the arc striking device is arranged on the static guide groove, before the ground switch is switched on, the limit end is positioned at the limit position of one side close to the movable lever in the adjusting groove, the movable end of the torsion spring is fixedly connected with the connecting seat, the positioning end of the torsion spring is fixedly connected with the pipe sleeve, the bottom surface of the connecting seat is also provided with a limit end, an annular adjusting groove which takes the central shaft of the rebound assembly as the axis is formed in the upper surface of the connecting seat, the limit end stretches into the adjusting groove, the arc striking device is arranged on the static guide groove, the limit position is positioned at the limit position of one side close to the movable lever in the adjusting groove before the ground switch is switched on, the limit position is in a state of being in contact with the movable lever when the movable lever is in a deformed state, when the brake is opened, the movable arc striking rod moves away from the arc striking rod, and the arc striking rod is tightly propped against the movable arc striking rod under the action of the restoring force of the torsion spring until the limiting end moves to the limit position of one side, close to the movable arc striking rod, of the regulating groove, so that the arc striking rod always keeps a force facing one side of the movable arc striking rod. Preferably, the top surface of the connecting seat is fixedly connected with a fixed pressing block, the lower surface of the fixed pressing block is provided with a limiting groove, the arc striking rod is arranged in the limiting groove in a penetrating mode, the fixed pressing block is circular, the length of the limiting groove is consistent with the diameter of the fixed pressing block, and the cross section size of the limiting groove is matched with the cross section size of the arc striking rod. Preferably, the fixing pressing block is provided with a first fixing hole in a penetrating mode, the connecting seat is provided with a second fixing hole matched with the first fixing hole in a penetrating mode, a threaded portion of the fixing screw penetrates through the first fixing hole to be connected into the second fixing hole, and the front end portion of the fixing screw protrudes into the adjusting groove to form the limiting end. Preferably, a first mounting hole coaxial with and communicated with the shaft hole is formed in the middle of the bottom surface of the pipe sleeve, a positioning hole is formed in the side edge of the first mounting hole, the connecting end of the torsion spring pin shaft is arranged in the first mounting hole in a penetrating mode, and the positioning end of the torsion spring is arranged in the positioning hole in a penetrating mode so as to cooperate with the movable end of the torsion spring to provide rebound torsion force for the torsion spring pin shaft. Preferably, a fixing seat is convexly arranged at the middle position of the bottom surface of the connecting seat, a connecting hole and a plurality of adjusting holes formed along the periphery of the connecting hole are formed at the middle position of the fixing seat, the fixed end of the torsion spring pin s