Switch cabinet and interlocking device used for isolation switch and circuit breaker of switch cabinet

Abstract

The invention relates to a switch cabinet and an interlocking device used for the isolation switch and the circuit breaker of the switch cabinet. The interlocking device comprises a flexible push plate, a button locking structure and a flexible push plate locking mechanism which is arranged between the operation shaft of the flexible push plate and the circuit breaker. The flexible push plate is provided with a shielding operation hole and an initial position corresponding to the closed circuit breaker and an avoidance operation hole and an avoidance position corresponding to the separated circuit breaker. The button locking structure and the flexible push plate are connected through a transmission structure so that the button locking structure is driven to lock the closing button when theflexible push plate moves to the avoidance position from the initial position and the button locking structure is driven to perform unlocking when the flexible push plate recovers to the initial position. The flexible push plate locking mechanism locks the flexible push plate at the initial position when the circuit breaker is closed and unlocks the flexible push plate when the circuit breaker isseparated. Mechanical interlocking control between the isolation switch and the circuit breaker can be realized so that the structure is simple and operation is convenient without increasing the burden of the isolation switch operation mechanism and the circuit breaker operation mechanism.

Description

technical field [0001] The invention relates to a switch cabinet and an interlocking device for an isolating switch and a circuit breaker. Background technique [0002] The gas ring network cabinet is a kind of switchgear strongly advocated by the state. There are isolating switch and circuit breaker in the gas ring network cabinet. The isolating switch has three positions of conducting, isolating and grounding, so it is also called a three-position isolating switch. In the prior art, an isolating switch mounting plate and a circuit breaker mounting plate are provided in the ring main unit, and the circuit breaker operating mechanism and the three-position isolating switch operating mechanism are respectively installed on the circuit breaker mounting plate and the three-position isolating switch mounting plate On the mounting plate of the three-position isolating switch, the isolation grounding operation hole and the isolation conduction operation hole corresponding to the ...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a switchgear to solve the technical problems in the prior art that the structure of the interlocking device for the isolating switch and the circuit breaker is complex and the closing button of the circuit breaker cannot be locked when the grounding switch is operated

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