Vacuum circuit breaker opening and closing device

Abstract

The invention discloses a vacuum circuit breaker opening and closing device which comprises an installation cover connected with a mechanism box and an isolation knife switch frame connected to the side wall of the mechanism box. An operation handle is rotatably connected to the surface at the side, close to the installation cover, of the mechanism box, and an adjusting disc is connected to the outer surface of the installation cover. A sliding rail groove is formed in inner surface of installation cover, and an embedding groove is formed at position, corresponding to adjusting disc, of innerwall of sliding rail groove. According to the invention, rapid opening and closing operation of the circuit breaker can be realized through a force unloading frame and a driving strip, during specificimplementation, the driving strip can slide along the sliding rail groove only by rotating the adjusting disc, and in the reciprocating sliding process of the driving strip, the circuit breaker and the isolation knife switch can be quickly opened and closed, the successive operation flows can be automatically determined in the operation process, and meanwhile, the operation process is extremely quick and labor-saving, so that the situation of misoperation of the opening and closing operation or insufficient opening and closing is avoided.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of circuit breakers, in particular to a closing and opening device for a vacuum circuit breaker. Background technique [0002] "Vacuum circuit breaker" is named because the arc extinguishing medium and the insulating medium of the contact gap after arc extinguishing are high vacuum; it has the advantages of small size, light weight, suitable for frequent operation, and no maintenance for arc extinguishing. It is widely used in power grid. Vacuum circuit breaker is an indoor power distribution device in 3-10kV, 50Hz three-phase AC system, which can be used for protection and control of electrical equipment in industrial and mining enterprises, power plants, and substations, especially suitable for oil-free, less In places where maintenance and frequent operations are used, circuit breakers can be configured in central cabinets, double-layer cabinets and fixed cabinets to control and...

AI Technical Summary

Problems solved by technology

[0004] For this reason, the embodiment of the present invention provides a vacuum circuit breaker closing and opening device to solve the problem that once the user does not operate properly in the prior art, such as closing the circuit breaker first and then closing the isolating knife switch during power transmission, it is very easy to cause The circuit is burned out, and because the isolation switch is directly exposed to the outside world, in the long-term use process, the rotation of the switch is prone to rust or foreign matter, which makes its rotation more laborious and causes the user to open and close. The problem of insufficient opening and closing is easy to occur when the knife is opened

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