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CN-224203984-U - Switch cabinet isolation mechanism

CN224203984UCN 224203984 UCN224203984 UCN 224203984UCN-224203984-U

Abstract

The utility model relates to a switch cabinet isolation mechanism which comprises a mounting seat, wherein an isolation shaft, a grounding shaft and a main shaft are rotatably arranged on the mounting seat, a linkage assembly is arranged among the isolation shaft, the grounding shaft and the main shaft, the isolation shaft and the grounding shaft are rotated by the linkage assembly to drive the main shaft to rotate, a partition piece is fixedly arranged on the main shaft and comprises a blocking part, the blocking part is abutted against the grounding shaft or the isolation shaft to lock the shaft to rotate, and by adopting the technical scheme, the blocking part can abut against the other shaft to realize locking when the isolation shaft or the grounding shaft drives the main shaft to rotate, the structure is simple, misoperation is effectively prevented, the linkage assembly adopts a matching structure of a pin shaft, a connecting rod and a strip hole, the strip hole provides a certain activity allowance for the pin shaft, the transmission process is smoother, and clamping stagnation is avoided.

Inventors

  • ZHOU CHANGYONG
  • CHEN MINGHUANG
  • CHEN KAIXUAN
  • CHEN WEI
  • LI BOBO
  • LIU KUNPENG
  • Ni Zhentuo

Assignees

  • 申恒电力设备有限公司

Dates

Publication Date
20260505
Application Date
20260407

Claims (8)

  1. 1. The switch cabinet isolation mechanism comprises a mounting seat (1), wherein an isolation shaft (2), a grounding shaft (3) and a main shaft (4) are rotatably arranged on the mounting seat (1), and the switch cabinet isolation mechanism is characterized in that a linkage assembly is arranged among the isolation shaft (2), the grounding shaft (3) and the main shaft (4), the isolation shaft (2) and the grounding shaft (3) are rotated through the linkage assembly to drive the main shaft (4) to rotate, an isolation piece (5) is fixedly arranged on the main shaft (4), the isolation piece (5) comprises a blocking part (51), and the blocking part (51) is abutted against the grounding shaft (3) or locked to rotate behind the isolation shaft (2); The linkage assembly comprises a first pin shaft (21) in transmission connection with the isolation shaft (2), a second pin shaft (31) in transmission connection with the grounding shaft (3) and a linkage plate (41) fixedly arranged on the main shaft (4), wherein a third pin shaft (42) and a fourth pin shaft (43) are rotatably arranged on the linkage plate (41), a first connecting rod (22) is hinged between the first pin shaft (21) and the third pin shaft (42), a second connecting rod (32) is hinged between the second pin shaft (31) and the fourth pin shaft (43), and strip-shaped holes (17) for the first pin shaft (21) or the second pin shaft (31) to penetrate and slide are formed in the first connecting rod (22) and the second connecting rod (32); The linkage assembly further comprises a telescopic rod (15), two sides of the telescopic rod (15) are fixedly connected with the first pin shaft (21) and the second pin shaft (31) respectively, and a telescopic spring (16) is sleeved on the telescopic rod (15).
  2. 2. The switch cabinet isolation mechanism according to claim 1, wherein the main shaft (4) is integrally or fixedly provided with the protruding portion (6), the installation seat (1) is provided with the interlocking plate (7) in a sliding mode, when the main shaft (4) rotates, the protruding portion (6) extrudes and pushes the interlocking plate (7) to slide, the installation seat (1) is provided with the circuit breaker mechanism, the circuit breaker mechanism comprises a moving contact (8), a guide plate (9) and a closing switch (10) for controlling the moving contact (8) to move and contact the guide plate (9), the closing switch (10) is correspondingly provided with a transmission assembly on the installation seat (1), the closing switch (10) drives the moving contact (8) to rotate through the transmission assembly, the transmission assembly comprises a closing plate (11) for transmitting the movement of the closing switch (10), and after the interlocking plate (7) slides towards the side far away from the main shaft (4), the closing plate (11) is abutted to the interlocking plate (7) in the movement.
  3. 3. A switch cabinet isolation mechanism according to claim 1 or 2, wherein a first mounting piece (23) is fixedly arranged on the isolation shaft (2), the first pin shaft (21) is rotatably arranged on the first mounting piece (23), a second mounting piece (33) is fixedly arranged on the grounding shaft (3), the second pin shaft (31) is rotatably arranged on the second mounting piece (33), and the first pin shaft (21) and the second pin shaft (31) are arranged in parallel.
  4. 4. A switch cabinet isolation mechanism according to claim 1 or 2, wherein the mounting base (1) is provided with a first arc-shaped groove and a second arc-shaped groove, the first pin shaft (21) is partially positioned in the first arc-shaped groove and swings along the track of the first arc-shaped groove, and the second pin shaft (31) is partially positioned in the second arc-shaped groove and swings along the track of the second arc-shaped groove.
  5. 5. The switch cabinet isolation mechanism of claim 2, wherein an elastic piece (12) is arranged between the mounting seat (1) and the interlocking plate (7), and two ends of the elastic piece (12) are respectively and fixedly arranged relative to the mounting seat (1) and the interlocking plate (7).
  6. 6. The switch cabinet isolation mechanism of claim 2, wherein the guide plate (9) is slidably arranged on the mounting seat (1), the moving contact (8) is rotatably arranged on the mounting seat (1), the moving contact (8) is pressed against the guide plate (9) after rotating, and the guide plate (9) slides under the action of the moving contact (8) to be pressed against or separated from the isolation shaft (2) and the grounding shaft (3), so that the locking and releasing of the rotation of the isolation shaft (2) and the grounding shaft (3) are realized.
  7. 7. The switch cabinet isolation mechanism of claim 6, wherein the mounting seat (1) is further provided with a switch (14), and the switch (14) drives the movable contact (8) to rotate to be contacted and separated with the guide plate (9).
  8. 8. The switch cabinet isolation mechanism according to claim 1, wherein the main shaft (4), the isolation shaft (2) and the grounding shaft (3) are arranged in a triangular structure, and the blocking portion (51) is a protruding portion on two sides of the isolation piece (5).

Description

Switch cabinet isolation mechanism Technical Field The utility model belongs to the technical field of switch cabinets, and particularly relates to a switch cabinet isolation mechanism. Background The switch cabinet is key equipment for controlling, protecting and isolating circuits in a power system, and the isolating mechanism is mainly used for realizing breaking, isolating and grounding operation of the circuits, is an important component for guaranteeing safe operation of the power system, and generally comprises an isolating operation shaft, a grounding operation shaft and corresponding interlocking structures, and is used for preventing misoperation and guaranteeing safety of operators. However, the switch cabinet isolation mechanism in the prior art still has the defects that on one hand, the linkage structure is complex, the transmission between the isolation shaft and the grounding shaft depends on a plurality of connecting rods or gear assemblies, the assembly difficulty is high, the problems of abrasion, clamping stagnation and the like are easy to occur after long-term use, the smoothness and reliability of operation are affected, on the other hand, the interlocking function is not perfect enough, an effective mechanical interlocking mechanism is lacking, an operator can misoperation a closing switch in an isolation or grounding state to cause equipment damage and even safety accidents, and in addition, the resetting performance of the existing mechanism is poor, the matching design between the existing mechanism and a circuit breaker is not tight enough, and effective interlocking among isolation, grounding and closing operations is difficult to realize. Disclosure of utility model The utility model aims to overcome the defects of the prior art, and provides a switch cabinet isolation mechanism which solves the problem that the isolation mechanism is complex in structure. The technical scheme includes that the switch cabinet isolation mechanism comprises a mounting seat, wherein an isolation shaft, a grounding shaft and a main shaft are rotatably arranged on the mounting seat, a linkage assembly is arranged among the isolation shaft, the grounding shaft and the main shaft, the isolation shaft and the grounding shaft rotate through the linkage assembly to drive the main shaft to rotate, and an isolation piece is fixedly arranged on the main shaft and comprises a blocking part which is abutted against the grounding shaft or the isolation shaft to lock the shaft to rotate; The linkage assembly comprises a first pin shaft in transmission connection with the isolation shaft, a second pin shaft in transmission connection with the grounding shaft and a linkage plate fixedly arranged on the main shaft, wherein a third pin shaft and a fourth pin shaft are rotatably arranged on the linkage plate, a first connecting rod is hinged between the first pin shaft and the third pin shaft, and a second connecting rod is hinged between the second pin shaft and the fourth pin shaft; The linkage assembly further comprises a telescopic rod, two sides of the telescopic rod are fixedly connected with the first pin shaft and the second pin shaft respectively, and a telescopic spring is sleeved on the telescopic rod. By adopting the technical scheme, through the spacer with the blocking part arranged on the main shaft, when the isolating shaft or the grounding shaft drives the main shaft to rotate, the blocking part can prop against the other shaft to realize locking, the structure is simple, misoperation is effectively prevented, the linkage assembly adopts the matching structure of the pin shaft, the connecting rod and the strip-shaped hole, the strip-shaped hole provides a certain activity allowance for the pin shaft, the transmission process is smoother, clamping stagnation is avoided, the telescopic rod and the telescopic spring are arranged, the distance between the pin shafts at two sides of the linkage assembly is reduced after a certain stroke is operated, the telescopic spring is reset, the elastic reset action of the telescopic spring can push the corresponding pin shaft to continue to act, and the rotating isolating shaft and the grounding shaft have gear hand feeling. The utility model further provides that a protruding part is integrally or fixedly arranged on the main shaft, a linkage plate is arranged on the mounting seat in a sliding way, when the main shaft rotates, the protruding part extrudes and pushes the linkage plate to slide, a circuit breaker mechanism is arranged on the mounting seat, the circuit breaker mechanism comprises a moving contact, a guide plate and a closing switch for controlling the moving contact to move and contact the guide plate, a transmission assembly is correspondingly arranged on the mounting seat of the closing switch, the closing switch drives the moving contact to rotate through the transmission assembly, the transmission assembly comprises a closing buckle plate for tr