CLOSING AUXILIARY MECHANISM AND DRIVING MECHANISM OF ELECTRIC SWITCHING DEVICE

摘要

PROBLEM TO BE SOLVED: To increase the closing energy of a circuit breaker mechanism while making minimum the modification of the mechanism. SOLUTION: The driving mechanism of the circuit breaker comprises a master mechanism and a slave mechanism. The master mechanism comprises an energy storage spring that is driven by a loaded axle and an energy storage part assembly having an opening/closing part assembly for driving the switching axle. The master mechanism is controlled by a closing latch and opening latch. The slave mechanism comprises a closing auxiliary spring 102 that is connected to the loaded axle by a load cam 86 and a multi-function lever 92. The rotation of the loaded axle 22 gives instructions of load and relaxing to the auxiliary spring 102. The auxiliary spring 102 drives the switching axle 14 by using an arm 104 that moves interlocked with the hook-shape crank 112. As the end of the closing process, the arm 104 is separated from the crank 112 and withdrawn so as not to obstruct the opening of the mechanism. The auxiliary mechanism makes possible the increase of energy that is comprehensively supplied by the driving mechanism.