Double-acting arc extinguish chamber transmission structure, arc extinguish chamber adopting same and circuit break

Abstract

The invention relates to that field of switching equipment, in particular to a double-acting arc extinguish chamber transmission structure, an arc extinguish chamber adopting the same and a circuit break. The double-acting arc extinguish chamber transmission structure comprises connecting rod mechanisms arranged in pairs, wherein the same pair of connecting rod mechanisms are arranged in the extension direction of a rotation axis of rotating connecting rods; projections of corresponding connecting rods in the same pair of connecting rod mechanisms in a first projection plane perpendicular to the rotation axis are symmetrical with respect to a projection line of a center line of a first contact assembly; the projections of the corresponding connecting rods in the same pair of connecting rodmechanisms in a second projection plane perpendicular to the first projection plane and parallel to the center line of the first contact assembly are symmetrical with respect to the projection line of the center line of the first contact assembly; and thus occupied space of the connecting rod mechanisms is reduced, the volume of the arc extinguish chamber is further reduced, and the problem of large volume of the arc extinguish chamber caused by parallel arrangement of the two connecting rod mechanisms in the current double-acting arc extinguish chamber transmission structure is solved.

Description

technical field [0001] The invention relates to the field of switchgear, in particular to a double-acting arc extinguishing chamber transmission structure and an arc extinguishing chamber and a circuit breaker using the transmission structure. Background technique [0002] With the development of circuit breakers, various forms of arc extinguishing chambers have emerged to meet the breaking performance of circuit breakers. Commonly used arc extinguishing chamber structures include single-acting and double-acting. The single-acting arc extinguishing chamber transmission structure refers to the movement of only the moving contacts of the arc extinguishing chamber when the switch is opened and closed, and the double-acting type interrupter transmission structure refers to the movement of not only the moving contacts of the arc extinguishing chamber when the switch is opened and closed. The static contact of the arc extinguishing chamber also moves, and the moving direction of t...

AI Technical Summary

Problems solved by technology

Although this kind of double-acting link mechanism can avoid the stagnation of the entire link mechanism, the two link mechanisms are arranged along the direction perpendicular to the rotation axis of the crank arm, which takes up a lot of space and causes the problem of large volume of the entire arc extinguishing chamber.

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