Anti-bounce apparatus of automatic transfer switching equipment

Abstract

The present invention relates to an anti-bounce apparatus of automatic transfer switching equipment. The anti-bounce apparatus includes a machine architecture and two anti-bounce mechanisms that are in mirror arrangement. The anti-bounce mechanism includes a spindle, a suspended arm, a pendulum member, a pin shaft, and a reset torsion spring. The suspended arm includes a transmission part and a connection part. The transmission part is connected to a movable contact of the automatic transfer switching equipment. A side board of the machine architecture is provided with a stop matched with the transmission part of the suspended arm. The shape of a cross section of the pendulum member is of a U shape. The front end of the pendulum member is movably sheathed on a connection part of the suspended arm through the pin shaft. The connection part of the suspended arm is provided with a hook-shaped body matched with the front end of the pendulum member. The reset torsion spring is sheathed on the pin shaft. One end of the reset torsion spring is clamped in a U-shaped groove of the pendulum member. The other end of the reset torsion spring is clamped in the hook-shaped body of the connection part of the suspended arm. The reset torsion spring hinges the pendulum member on the connection part of the suspended arm. The tail end of the pendulum member props against the peripheral wall of the spindle. The anti-bounce apparatus has the advantages of simple structure, prominent anti-bounce effect, stable and reliable performance and so on.

Description

technical field [0001] The invention specifically relates to an automatic transfer switch, in particular to an anti-bounce device for an automatic transfer switch. Background technique [0002] Contact bouncing is a serious hazard to electrical appliances with contacts, that is, after the moving and static contacts of the circuit breaker reach the maximum opening distance, there will be a large rebound, and the rebound range can reach half of the opening distance, and even the moving and static contacts will appear. In the case of contact again, this bouncing will cause the arc not to be extinguished in time or even the arc to reignite, which seriously affects the breaking ability of the circuit breaker. For this type of electrical appliances, measures to prevent contact bounce are necessary. The automatic transfer switch is no exception. Different from other general electrical appliances, the automatic transfer switch has two sets of moving contacts, the common one and the...

AI Technical Summary

Problems solved by technology

The anti-bounce device can be used on the common main shaft of the automatic transfer switch, but when used on the spare main shaft, the structure needs to be mirrored, and the acting torque of gravity is opposite to the direction of rotation of the hook-shaped rod, so the structure is difficult to realize; the anti-bounce device The structural design is complex. When breaking different short-circuit currents, the impact energy of the transmission part is also different, and the swing speed of the hook rod is different. It is difficult to hook the transmission part reliably and accurately, so the anti-bounce device has the defect of unstable and reliable performance.

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