Anti-bounce device of universal circuit breaker mechanism

Abstract

The invention discloses an anti-bounce device of a universal circuit breaker mechanism, which comprises a pressing plate, a cantilever, a connecting rod and an energy release plate, the pressing plate is fixed on a base and arranged at the end part of a mechanism main shaft, the cantilever is fixed on a mechanism rotating shaft and rotates along with the mechanism main shaft, and the energy release plate is arranged at one end of the cantilever; the cantilever comprises a convex part, and one side edge of the convex part is movably contacted with the limiting cylinder; the pressing plate is provided with a connecting rod, one end of the connecting rod is hinged to the pressing plate through a hinge shaft I, the other end of the connecting rod is provided with a bumping post, the protruding portion of the cantilever is provided with an inwards-concave arc edge, the connecting rod is provided with a torsional spring I, and the torsional spring I gives thrust to the bumping post. When the side edge of the protruding portion of the cantilever makes contact with the limiting cylinder, the torsional spring I makes the bumping post make contact with the inwards-concave arc edge in a pressing mode. The whole anti-bounce structure is arranged at the side end of the main shaft of the mechanism and does not occupy the internal space of the circuit breaker, when the mechanism carries out an opening action, the rotating shaft of the mechanism rotates to drive the cantilever to rotate upwards to a certain angle, the stop shaft is in contact with the upper side edge of the convex part to generate resistance, and when the rotating shaft rotates to a limit position, the limiting cylinder blocks the convex part. The cantilever cannot rebound and rotate under the counter-acting force of the blocking shaft, and the main function of bounce prevention is achieved; meanwhile, the energy releasing plate rotates to release energy, an anti-bounce auxiliary effect is achieved, the whole device is ingenious in structural design, the anti-bounce performance of the circuit breaker can be effectively improved, the bounce frequency of the contact is remarkably reduced, the service life of high-capacity circuit breaker equipment is prolonged, and stable and reliable operation of an electric power system is ensured.