Transmission shaft for circuit breaker and circuit breaker poking mechanism using same

Abstract

The invention relates to a transmission shaft for a circuit breaker and a circuit breaker poking mechanism using the same. The circuit breaker poking mechanism comprises a transmission shaft driven by a corresponding operation mechanism, wherein the transmission shaft comprises a crank shaft body which is provided with a main shaft diameter, a connection rod and a connection rod shaft diameter, the main shaft diameter is used for being in transmission connection with a power output end of the corresponding operation mechanism, the connection rod shaft diameter is of a flat plate structure, three insulating shifting forks respectively corresponding to movable conducting rods of each phase of arc extinguish chamber are fixedly arranged in the axial direction of the connection rod shaft diameter at intervals through a shifting fork fixing mechanism, the insulating shifting forks are parallelly arranged, and transmission mechanisms which are in transmission connection with the corresponding movable conducting rods of the arc extinguish chambers and used for poking the corresponding conducting rods of the arc extinguish chambers when the transmission shaft moves back and forth are arranged on the inner sides of two shifting fork arms of each insulating shifting fork. The transmission shaft for the circuit breaker and the circuit breaker poking mechanism solve the problem that the existing circuit breaker poking mechanism is complex in structure, long in transmission route and low in transmission efficiency.

Description

technical field [0001] The invention relates to the field of circuit breakers, in particular to a transmission shaft for a circuit breaker and a toggle mechanism for a circuit breaker using the transmission shaft. Background technique [0002] The structure of the existing three-phase common tank vacuum circuit breaker is as follows: figure 1 As shown: it includes the moving terminal electrode 1 and the static terminal electrode 6 arranged before and after. The moving terminal electrode 1 is electrically connected with the moving conductive rod. The operating mechanism that moves the movable conductive rod back and forth to realize the closing and opening of the dynamic and static terminals, wherein the toggle mechanism includes the transmission crank arm 8 that is connected to the dynamic conductive rod at the power output end and the power input end that is connected to the transmission crank arm The insulating pull rod 4 on the top, and the transmission shaft 5 driven by...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to improve a transmission shaft for a circuit breaker, so as to solve the problems of the existing circuit breaker toggle mechanism with complex structure, long transmission stroke and low transmission efficiency; the purpose of the present invention is also to provide a transmission shaft using the transmission shaft circuit breaker toggle mechanism

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