Vacuum circuit breaker and vacuum circuit breaker driving device

Abstract

The invention provides a vacuum circuit breaker driving device. The vacuum circuit breaker driving device comprises a machine shell, a fixed iron core, a movable iron core, a transmission shaft, a driving coil, a holding coil and a control unit, wherein the movable iron core is arranged right opposite to the magnetic face of the fixed iron core and connected into the machine shell in a sliding mode; one end of the transmission shaft is fixedly connected with the movable iron core, and the other end of the transmission shaft is connected with an elastic connecting piece enabling the transmission shaft to move towards a separating brake; the driving coil is used for enabling the fixed iron core to produce driving magnetic force after being powered on; the holding coil is used for enabling the fixed iron core to produce holding magnetic force after being powered on; the control unit is connected with the driving coil and the holding coil, the driving coil is powered on when the brake is switched on, and the holding coil is powered on and the driving coil is powered off after the brake is switched on. Due to the fact that electromagnets are adopted to maintain the holding state, the occurrence that a permanent magnet is demagnetized and other instability are avoided, and the vacuum breaker driving device is stable in performance. The invention further provides a vacuum circuit breaker.

Description

technical field [0001] The invention relates to the field of vacuum circuit breakers for rail transit vehicles, and more particularly, to a drive device for vacuum circuit breakers. The invention also relates to a vacuum circuit breaker. Background technique [0002] At present, the vacuum circuit breakers used in rail transit vehicles at home and abroad mainly include BVAC.N99 series, TDV10 series and 22CB series vacuum circuit breakers. The above vacuum circuit breakers all adopt pneumatic drive mode, which has many parts and installation space. Large, high quality, high air tightness requirements, high noise. [0003] In addition, there are also vacuum circuit breakers using electromagnetic drive devices. The holding method of the drive device of this vacuum circuit breaker mainly adopts the permanent magnet holding method. The permanent magnet holding method has the shortcomings of easy demagnetization and instability, and cannot be applied to impact vibration. harsh e...

AI Technical Summary

Problems solved by technology

[0002] At present, the vacuum circuit breakers used in rail transit vehicles at home and abroad mainly include BVAC.N99 series, TDV10 series and 22CB series vacuum circuit breakers. Large size, high quality, high requirements on the air tightness of the gas path, and high noise

[0003] In addition, there are also vacuum circuit breakers using electromagnetic drive devices. The holding method of the driving device of this vacuum circuit breaker mainly adopts the permanent magnet holding method. The permanent magnet holding method has the disadvantages of easy demagnetization and instability, and cannot be applied to shock vibration. harsh environment

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