Valve self-locking mechanism of metal enclosed switch equipment

Abstract

The invention relates to a valve self-locking mechanism of metal enclosed switch equipment. A fixed support comprises a back plate, a top plate on the upper part of the back plate and a grooved support arranged outside the back plate. An interlocking plate comprises a grooved push plate and a hinging seat, wherein the hinging seat is arranged on the end part of the grooved push plate, and faces a direction opposite to one side of the grooved push plate. A hinging seat plate is fixed on the grooved support of the fixed support and hinged with the grooved push plate of the interlocking plate. A movable support is a frame with a lower opening. An outside plate of the movable support is hinged to the outside of the fixed support. A hook seat at the bottom of the outside plate of the movable support is arranged in a jack on the hinging seat of the interlocking plate. An inside plate of the movable support is positioned on one side of an upper connecting rod and a lower connecting rod, and is provided with a forwards-raised locking piece. The locking piece is provided with an upper flange and a lower flange. The two ends of a resetting spring are positioned on the fixed support and the hinging seat of the interlocking plate respectively. The valve self-locking mechanism can control a valve to be self-locked by side thrust to improve the self-locking reliability of the valve.

Description

technical field [0001] The invention relates to a valve self-locking mechanism of a metal-enclosed switchgear, belonging to the technical field of removable switchgear. Background technique [0002] The removable high-voltage switchgear is usually composed of a control room, a circuit breaker room, a busbar room and a cable room. A group of static contact seats as a static contact device are fixed in the chamber of the circuit breaker room. , The outlet static contact is connected with the external high-voltage power supply circuit. When the circuit breaker chassis is pushed into the circuit breaker room, the upper and lower contacts of the circuit breaker chassis are respectively engaged with the static contacts of the incoming and outgoing lines. After the circuit breaker is closed, the connection on the circuit is realized. In order to prevent the static contacts of the incoming and outgoing lines in the circuit breaker room from being energized during maintenance and en...

AI Technical Summary

Problems solved by technology

When pulling out the chassis of the circuit breaker for inspection or maintenance, if the tools are improperly placed or misoperated, vertical force may be applied to the lock hook or the pressure plate, which will cause the safety valve to open, causing the operator to be in danger of electric shock

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