Automatic operation mechanism for switching-on and switching-off of circuit breaker

Abstract

The invention relates to an electric operation mechanism for a circuit breaker, in particular, an automatic operation mechanism for the switching-on and switching-off of a circuit breaker. The automatic operation mechanism comprises a shell. A controller, a motor and a first sector gear are arranged in the shell, wherein the first sector gear is in rotation fit with the shell, the first sector gear is connected with the motor through a gear reduction mechanism, the first sector gear is provided with a connecting mechanism used for connecting the on-off switch of the circuit breaker, and the motor is connected with the controller through a wire. The automatic operation mechanism is characterized in that a first deflector rod as well as an upper position sensor and a lower position sensor which are used for sensing the position of the deflector rod are arranged in the shell, wherein the first deflector rod is in linkage fit with the gear reduction mechanism, the first deflector rod is connected with a pin shaft for connecting the tripping device of the circuit breaker through a linkage mechanism, and the upper position sensor and the lower position sensor are both connected with the controller through wires. The automatic operation mechanism has the advantages of long service life and simple structure.

Description

technical field [0001] The invention relates to an electric operating mechanism for a circuit breaker, in particular to an automatic operating mechanism for opening and closing the circuit breaker. Background technique [0002] Chinese utility model patent ZL2014204467418 discloses an electric operating mechanism of a circuit breaker with an instantaneous release device. It mainly includes a housing, in which there are motors, controllers, sector gears, movable blocks and electromagnetic coils. The motor is connected with the sector gear through the gear reduction mechanism, and the sector gear is connected with the driving handle. The electromagnetic coil is used to drive the movable block to rotate. There is a connecting rod on the movable block, and the motor and the electromagnetic coil are connected to the controller through wires. When in use, connect the driving handle with the opening and closing switch of the circuit breaker, and connect the connecting rod with th...

AI Technical Summary

Problems solved by technology

When this operating mechanism works under normal conditions, the output shaft of the motor and the gears in the gear reduction mechanism need to switch the direction of rotation, that is, the output shaft of the motor and the gears rotate in both directions, and the load on the motor is relatively large every time the direction of rotation is switched. , The gear wear is serious, the operating mechanism is easily damaged, and the service life is shortened

At the same time, the operating mechanism needs to be driven by the electromagnetic coil to realize quick opening, which requires more driving devices, which makes the structure of the whole mechanism more complicated.

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