CN-121983448-A - Switch cabinet with interlocking mechanism

CN121983448ACN 121983448 ACN121983448 ACN 121983448ACN-121983448-A

Abstract

The invention relates to a switch cabinet with an interlocking mechanism, which comprises a mounting base and a switch cabinet door, wherein a breaker mechanism and an isolated grounding mechanism are arranged on the mounting base, the isolated grounding mechanism comprises an isolated shaft and a grounding shaft which are rotatably arranged on the mounting base, the breaker mechanism comprises an opening and closing gate shaft and an interlocking component for locking or unlocking the switch cabinet door, the breaker mechanism also comprises a locking plate which is relatively fixed with the opening and closing gate shaft and a guide piece which is slidably arranged on the mounting base, and the interlocking component comprises a locking piece which is slidably arranged on the mounting base, and the locking plate directly or indirectly abuts against the guide piece or the locking piece after rotating. By adopting the technical scheme, the isolating shaft, the grounding shaft and the driven shaft are integrated on the same mounting base, and the linkage assembly is arranged to realize three-axis linkage, so that the mechanical interlocking between the isolating shaft and the grounding shaft can be realized by matching with the blocking part on the isolating piece.

Inventors

ZHOU CHANGYONG
CHEN MINGHUANG
WEN ZHIQIANG
WEI SHENG
WANG YONGFENG
WANG CHUNNIAN
TAO YUANYONG
LIU JILONG

Assignees

申恒电力设备有限公司

Dates

Publication Date: 20260505
Application Date: 20260407

Claims (10)

1. The switch cabinet with the interlocking mechanism comprises a mounting base (1) and a switch cabinet door (11), wherein a breaker mechanism and an isolated grounding mechanism are arranged on the mounting base (1), the isolated grounding mechanism comprises an isolated shaft (31) and a grounding shaft (32) which are rotatably arranged on the mounting base (1), and the breaker mechanism comprises an opening and closing gate shaft (21) and an interlocking component for locking or unlocking the switch cabinet door (11), and is characterized by further comprising a locking plate (22) which is relatively fixed with the opening and closing gate shaft (21) and a guide piece (23) which is slidably arranged on the mounting base (1), wherein the interlocking component comprises a locking piece (4) which is slidably arranged on the mounting base (1), and the locking plate (22) is directly or indirectly pressed against the guide piece (23) or the locking piece (4) after being rotated; The grounding shaft (32) is relatively fixedly provided with a cam piece (35), after the grounding shaft (32) rotates, the cam piece (35) directly or indirectly abuts against or is separated from the lock piece (4), and the lock plate (22) and the cam piece (35) jointly form constraint on sliding of the lock piece (4); The isolating and grounding mechanism further comprises a driven shaft (33), a linkage assembly is arranged among the isolating shaft (31), the grounding shaft (32) and the driven shaft (33), the driven shaft (33) is driven to rotate by the rotation of the isolating shaft (31) and the grounding shaft (32) through the linkage assembly, an isolating piece (34) is relatively fixedly arranged on the driven shaft (33), the isolating piece (34) comprises a blocking part (341), and the blocking part (341) is abutted to the grounding shaft (32) or the isolating shaft (31) and locked to rotate; The circuit breaker mechanism further comprises a first elastic piece (24) and a second elastic piece (25), wherein two ends of the first elastic piece (24) are respectively and fixedly arranged relative to the guide piece (23) and the mounting base (1), and two ends of the second elastic piece (25) are respectively and fixedly arranged relative to the lock piece (4) and the mounting base (1); The guide piece (23) slides under the combined action of the locking plate (22) and the first elastic piece (24) and is simultaneously pressed against or separated from the isolating shaft (31) and the grounding shaft (32), so that the rotating locking and releasing of the isolating shaft (31) and the grounding shaft (32) are realized.
2. The switch cabinet with the interlocking mechanism according to claim 1, wherein the linkage assembly comprises a first pin shaft (311) in transmission connection with the isolation shaft (31), a second pin shaft (321) in transmission connection with the grounding shaft (32) and a linkage plate (331) fixedly arranged on the driven shaft (33), a third pin shaft (332) and a fourth pin shaft (333) are rotatably arranged on the linkage plate (331), a first connecting rod (36) is hinged between the first pin shaft (311) and the third pin shaft (332), a second connecting rod (37) is hinged between the second pin shaft (321) and the fourth pin shaft (333), and strip-shaped holes (38) for the first pin shaft (311) or the second pin shaft (321) to penetrate and slide are formed in the first connecting rod (36) and the second connecting rod (37); The linkage assembly further comprises a telescopic rod (39), two sides of the telescopic rod (39) are fixedly connected with the first pin shaft (311) and the second pin shaft (321) respectively, and a telescopic spring (391) is sleeved on the telescopic rod (39).
3. The switch cabinet with the interlocking mechanism according to claim 2, wherein the mounting base (1) is provided with a first arc-shaped groove and a second arc-shaped groove, the first pin shaft (311) 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 (321) is partially positioned in the second arc-shaped groove and swings along the track of the second arc-shaped groove.
4. The switch cabinet with the interlocking mechanism according to claim 1 or 2, wherein the circuit breaker mechanism further comprises a switch-off switch (26) and a switch-on switch (27) for driving the switch-on and switch-off shaft (21) to rotate, the switch-on switch (26) and the switch-on switch (27) are correspondingly provided with transmission components for transmitting the rotation of the switch-on and switch-off shaft (21) on the installation base (1), the corresponding transmission components of the switch-on switch (27) comprise a switch-on plate (271) for transmitting the action of the switch-on switch (27), a protruding part (334) is integrally or fixedly arranged on the driven shaft (33), an interlocking plate (5) is slidably arranged on the installation base (1), and when the driven shaft (33) rotates, the protruding part (334) extrudes and pushes the interlocking plate (5) to slide, and after the interlocking plate (5) slides towards a side far away from the grounding shaft (32), the switch-on plate (271) is abutted against the interlocking plate (5) during the action.
5. The switch cabinet with the interlocking mechanism according to claim 4, wherein the switch (26) drives the lock plate (22) to rotate through a transmission assembly of the switch (26), the transmission assembly comprises a release plate (261) for transmitting the action of the switch (26), and after the lock (4) slides towards one side close to the grounding shaft (32), the release plate (261) directly or indirectly props against the lock (4) to lock the action.
6. The switch cabinet with the interlocking mechanism according to claim 1 or 2 is characterized in that a third elastic piece (51) is arranged between the mounting base (1) and the interlocking plate (5), and two ends of the third elastic piece (51) are respectively and fixedly arranged relative to the mounting base (1) and the interlocking plate (5).
7. The switch cabinet with the interlocking mechanism according to claim 1 or 2, wherein the driven shaft (33), the isolating shaft (31) and the grounding shaft (32) are arranged in a triangular structure, the locking piece (4) is positioned on one side of the isolating shaft (31) and the grounding shaft (32) close to the switch cabinet door (11), and the blocking part (341) is a protruding part on two sides of the isolating piece (34).
8. A switchgear with interlocking mechanism according to claim 1 or 2, characterized in that the end of the lock (4) remote from the grounding shaft (32) is screw-fitted with a screw (41).
9. The switch cabinet with the interlocking mechanism according to claim 2, wherein the isolation shaft (31) is fixedly provided with a first mounting piece (312), the first pin shaft (311) is rotatably arranged on the first mounting piece (312), the first pin shaft (311) is eccentrically arranged on the isolation shaft (31), the grounding shaft (32) is fixedly provided with a second mounting piece (322), the second pin shaft (321) is rotatably arranged on the second mounting piece, the second pin shaft (321) is eccentrically arranged on the grounding shaft (32), and the first pin shaft (311) and the second pin shaft (321) are relatively parallel.
10. A switch cabinet with an interlocking mechanism according to claim 1 or 2, characterized in that a baffle (42) is fixed or integrally arranged on the lock piece (4), and the lock plate (22) directly or indirectly abuts against the guide piece (23) or the baffle (42) after rotating.

Description

Switch cabinet with interlocking mechanism Technical Field The invention belongs to the technical field of electrical devices, and particularly relates to a switch cabinet with an interlocking mechanism. Background As an important control and protection device in an electrical power system, the safety and reliability of operation of the switchgear are of paramount importance. In order to prevent personal safety accidents or equipment damage caused by misoperation, an isolation mechanism and an interlocking mechanism are usually required to be arranged in the switch cabinet so as to realize five-prevention interlocking among the isolation switch, the grounding switch, the circuit breaker and the cabinet door. At present, traditional cubical switchboard keeps apart interlocking structure and adopts split type design or based on square shaft's transmission mode more, for example, keeps apart operating device and cabinet door interlocking device and is independent module generally, installs respectively in the different positions of cubical switchboard, links through complicated link assembly, and this kind of split type overall arrangement leads to part quantity many, including square shaft, axle sleeve, a plurality of connecting rods, fastener etc. not only material management cost is high, need many times centering adjustment during the assembly moreover, and is high to the requirement of assembler skill, and installation effectiveness is low. In addition, the existing mechanism still has the defect in the aspect of perfection of an interlocking function, the interlocking design between a closing state of the circuit breaker and isolation/grounding operation is not tight enough, potential safety hazards such as misoperation of a grounding switch and the like easily occur when the circuit breaker is not opened, and meanwhile, when a switch cabinet door is in an opening state, operators can misoperation of opening and closing the circuit breaker, so that the safety risk is further increased. Disclosure of Invention The purpose of the invention is that: in order to overcome the defects of the prior art, the invention provides the switch cabinet with the interlocking mechanism, which simplifies the assembly process through structural integration design, improves the interlocking reliability, realizes multiple safety interlocking between the isolation, grounding and circuit breaker and the cabinet door, and solves the problems of complex and insufficient tightness of the interlocking mechanism in the background art. The technical scheme of the invention is that the switch cabinet with the interlocking mechanism comprises a mounting base and a switch cabinet door, wherein a breaker mechanism and an isolated grounding mechanism are arranged on the mounting base, the isolated grounding mechanism comprises an isolated shaft and a grounding shaft which are rotatably arranged on the mounting base, the breaker mechanism comprises an opening and closing gate shaft and an interlocking component for locking or unlocking the switch cabinet door, the breaker mechanism also comprises a locking plate which is relatively fixed with the opening and closing gate shaft and a guide piece which is slidably arranged on the mounting base, the interlocking component comprises a locking piece which is slidably arranged on the mounting base, and the locking plate directly or indirectly abuts against the guide piece or the locking piece after rotating; the grounding shaft is relatively fixedly provided with a cam piece, and after the grounding shaft rotates, the cam piece directly or indirectly abuts against or is separated from the lock piece; The isolating and grounding mechanism further comprises a driven shaft, a linkage assembly is arranged among the isolating shaft, the grounding shaft and the driven shaft, the driven shaft is driven to rotate by rotation of the isolating shaft and the grounding shaft through the linkage assembly, isolating pieces are relatively fixedly arranged on the driven shaft, each isolating piece comprises a blocking part, and the blocking parts are abutted to the grounding shaft or the isolating shaft and locked to rotate; the circuit breaker mechanism further comprises a first elastic piece and a second elastic piece, wherein two ends of the first elastic piece are respectively and fixedly arranged relative to the guide piece and the mounting base, and two ends of the second elastic piece are respectively and fixedly arranged relative to the lock piece and the mounting base; The guide piece slides under the combined action of the locking plate and the first elastic piece and simultaneously abuts against or separates from the isolating shaft and the grounding shaft, so that the locking and the releasing of the rotation of the isolating shaft and the grounding shaft are realized. By adopting the technical scheme, the isolating shaft, the grounding shaft and the driven shaft are integrated on the same mounting