Special five-prevention chain for spring operating mechanism of circuit breaker

Abstract

The invention discloses a special five-prevention chain for a spring operating mechanism of a circuit breaker. The special five-prevention chain for the spring operating mechanism of the circuit breaker comprises a circuit breaker mechanism, a first connecting rod, a second connecting rod, an isolation mechanism, a guide bracket, a cam, a push plate and a cam top plate; an output crank arm of thecircuit breaker mechanism is hinged to one end of the first connecting rod through a shaft pin, the other end of the first connecting rod and the second connecting rod are locked by a bolt, an isolation operation mechanism is arranged below the circuit breaker mechanism, the guide bracket is mounted on a front clamp plate of the isolation mechanism, and the second connecting rod penetrates throughthe guide bracket; the cam is mounted on an operation shaft of the isolation mechanism, a chain plate of the lower portion of the circuit breaker mechanism is connected with a push plate through bolts, and a top plate of the cam is fixed to the lower portion of the push plate through bolts. In this way, the structure is compact, the cam is simple in structure, a stable output stroke is achieved,the reliability of interlock is ensured, the disc-shaped cam adopts a thick plate, and the rigidity of the entire chain is ensured.

Description

technical field [0001] The invention relates to the technical field of circuit breakers, in particular to a special five-proof interlock configured on a spring operating mechanism of a circuit breaker. Background technique [0002] In the actual operation of power switchgear, the mechanical transmission interlocking parts often fail, among which the five-proof interlocking between the circuit breaker operating mechanism and the isolating switch often fails, and most of the five-proof interlocking are relatively flexible and prone to failure. Based on the above Deficiencies and deficiencies, it is necessary to improve the existing technology. . Contents of the invention [0003] The main technical problem to be solved by the present invention is to provide a special five-proof interlock which is arranged on the spring operating mechanism of the circuit breaker. The thick plate ensures the rigidity of the entire set of chains and achieves long-term stable results. [0004...

AI Technical Summary

Problems solved by technology

[0002] In the actual operation of power switchgear, the mechanical transmission interlocking parts often fail, among which the five-proof interlocking between the circuit breaker operating mechanism and the isolating switch often fails, and most of the five-proof interlocking are relatively flexible and prone to failure. Based on the above Defects and deficiencies, it is necessary to improve the existing technology

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