Breaking operating device for circuit breaker

Abstract

The invention discloses a breaking operating device for a circuit breaker. The breaking operating device is characterized by comprising a breaking maintaining crank arm, a roller, a shift fork and a breaking quantum, wherein the breaking maintaining crank arm can rotate around a first circle center, the roller can rotate a main shaft, the shift fork can rotate a fourth circle center, the breaking quantum can rotate around a second circle center, a breaking torsional spring is arranged on the breaking maintaining crank arm and is used for allowing the breaking maintaining crank arm to be in a trend of rotating in a counterclockwise way, a torsional spring is arranged on the shift fork and is used for allowing the shift fork to be in a trend of rotating in the counterclockwise way, a shift fork is arranged on the breaking quantum and can rotate, a rolling needle bearing is fixedly arranged on the breaking quantum and is externally tangent to a front end of the breaking maintaining crank arm, and a spring is fixedly arranged on the breaking quantum and is used for allowing the breaking quantum to be in a trend of the rotating in the counterclockwise way. The breaking operating device has the advantages of stable and reliable breaking, low part processing difficulty and small breaking force and is assembled in one time without debugging.

Description

Technical field [0001] The invention relates to an opening operating device for a circuit breaker, belonging to the field of high-voltage circuit breaker equipment. Background technique [0002] The high-voltage circuit breaker is the core equipment in the field of power distribution equipment, the operating mechanism is the core component of the high-voltage circuit breaker, and the opening operating device is one of the core components of the operating mechanism. The core function of the circuit breaker is to safely cut off the circuit. It is the opening operation device that plays a decisive role. This device not only has the function of opening operation, but also the function of maintaining after closing. Its safety and reliability are directly It is related to the safety and reliability of circuit breakers and distribution networks. [0003] The traditional opening operation device is generally realized by a half shaft, such as figure 1 , figure 2 As shown, it mainly includ...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a circuit breaker opening operation device with stable and reliable opening, less difficulty in processing parts, small opening force value and no need for debugging in one-time assembly, which solves the problem of the traditional opening operation device. The required opening and tripping force is large, the processing of parts is difficult, the material and performance requirements are high, the debugging is difficult, easy to be damaged, and the problem of refusal to open is prone to occur.

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