Contact mechanism for double-breakpoint circuit breaker
A circuit breaker and double break point technology, applied in the direction of circuit breaker contacts, circuit breaker components, etc., can solve the problems of ineffective positioning and insufficient stability of the contact mechanism, so as to avoid shaking, improve stability, and improve the limit The effect of the flow effect
Active Publication Date: 2014-09-24
GUIZHOU TAIYONG CHANGZHENG TECH CO LTD
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is to provide a contact mechanism of a double-breakpoint circuit breaker, which can improve the contact mechanism of the double-breakpoint circuit breaker. head positioning stability
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[0024] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0025] figure 1 and figure 2 They are a schematic diagram of the overall structure and a schematic diagram of the internal structure of the contact mechanism of the double breakpoint circuit breaker in the present invention, respectively. Such as figure 1 and figure 2 As shown, the contact mechanism of the double break point circuit breaker includes a rotating shaft 100 and a moving contact 200 rotatably arranged in the rotating shaft 100 . The rotating shaft 100 includes two opposite end walls 101 connected to each other by two connecting plates 102 . A cavity for accommodating the movable ...
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The invention relates to a contact mechanism for a double-breakpoint circuit breaker. The contact mechanism comprises a revolution shaft, a movable contact which can be arranged in the revolution shaft in a rotatable way, two baffle rods, two compression bar pieces, and at least two springs, wherein the movable contact comprises two end arms which are rotational symmetric with each other; the two baffle rods are fixedly arranged on the two end arms of the movable contact respectively; the two compression bar pieces are arranged on the two end arms respectively and two ends of each compression bar piece extend to upper and lower sides of each end arm; a first end of each compression bar piece is provided with a shaft, two ends of each shaft are connected to the revolution shaft and the whole compression bar piece can rotate around the shaft, and the middle part of each compression bar piece is pressed against each baffle rod; and one end of each spring is hooked at the first end of one compression bar piece, and the other end of each spring is hooked at a second end of the other compression bar piece. The contact mechanism for the double-breakpoint circuit breaker can improve the positioning stability of the movable contact, has obvious separating and clamping effects and can guarantee a good current limit effect.
Description
technical field [0001] The present invention relates to a circuit breaker, more specifically, to a contact mechanism of a double break point circuit breaker. Background technique [0002] The contact mechanism of the circuit breaker is used to connect or disconnect the circuit driven by the operating mechanism. Rotary double break point circuit breaker uses the electrodynamic repulsion generated by the fault current to directly separate the dynamic and static contacts, which can achieve the purpose of quickly cutting off the circuit. When there is no external force, the dynamic and static contacts remain in contact; when a short-circuit current occurs, the contacts are repelled by the electromotive force, and the dynamic and static contacts are separated from each other. After being repelled, the electric repulsion force decreases accordingly. If the moving contact cannot be positioned in time and effectively after leaving the static contact, under the action of the tension...
Claims
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IPC IPC(8): H01H73/04
Inventor 黄正乾孟亚军
Owner GUIZHOU TAIYONG CHANGZHENG TECH CO LTD