A circuit breaker spring operating mechanism

Abstract

The invention relates to a spring operating mechanism of a circuit breaker, which comprises a mechanism box, in which a camshaft is arranged, and a closing cam is arranged on the camshaft, and the closing camshaft is connected to the closing spring through an energy storage crank arm. There is also a driving main shaft in the middle, on which the closing lever part, the driving lever part and the closing holding plate are fixed, and the mechanism box is equipped with a tripping semi-axis, which has the same rotation stroke as the tripping semi-axis. The closing holding plate is contacted and stopped to cooperate with the closing holding plate and the drive main shaft to lock the driving crank arm part in the closing holding position of the closing position, and also has a tripping avoidance position of the closing holding plate. Use the tripping half shaft to directly stop and limit the closing holding plate, and then realize the closing and holding limit of the driving main shaft. It only needs to drive the tripping half shaft to rotate to the avoidance position, and the opening holding plate can be quickly tripped , the overall structure is relatively simple, and the tripping operation is quick and convenient.

Description

technical field [0001] The invention relates to a circuit breaker spring operating mechanism, belonging to the field of circuit breaker operating mechanisms. Background technique [0002] At present, the operating mechanism used in the domestic 40.5kV medium voltage circuit breaker belongs to the structure of sliding curved wheel, crank arm and four-linkage. The upper four-link structure is an unstable structure, which causes unstable operation characteristics, often resulting in insufficient closing, secondary energy storage failure, and changes in opening and closing speeds. It adds a lot of hidden dangers to the circuit breaker in the operation process, and also brings unstable factors to people's production and life. [0003] In the Chinese Utility Model Patent Specification whose authorized announcement number is CN200965845Y, a small spring operating mechanism of a high-voltage circuit breaker is disclosed, including a mechanism box in which an energy storage transmis...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a circuit breaker spring operating mechanism to solve the problem that the existing spring operating mechanism is equipped with an opening detent and a buckle plate to cooperate with the opening half shaft, which makes the opening and tripping action slow and the overall structure is relatively complicated. technical issues

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