Three-station switch release mechanism and method

Abstract

The invention provides a three-station switch release mechanism and method. The three-station switch release mechanism comprises a pressing spring and a bracket connected with the pressing spring, wherein a release shaft and a control shaft are arranged on the side of the bracket; a shifting fork is arranged on one side, towards the release shaft, of the bracket; a front limiting swing rod is arranged on the release shaft in the axial direction; a limiting roller is arranged in the middle of the front limiting swing rod; a control swing rod is arranged on the control shaft; a gear detent swing rod is also connected onto the front limiting swing rod; a detent in contact with a gear is arranged on the gear detent swing rod. The three-station switch release mechanism is simple in structure, the detent is utilized to limit the rotation of the gear after switch-on is finished, and the condition that in a conventional three-station switch operating mechanism, after the operation of the switch-on process is finished, the whole operating mechanism is likely to be subjected to impact vibration, which is caused by the fact that energy storage and release processes appear repeatedly when a spring is pulled upwards, is avoided. Sliding is replaced by utilizing rolling to reduce friction, and the force balance is utilized to stably clamp the front limiting swing rod on the release shaft, so that the condition that a greater moment of force needs to be input to the control shaft in switch-off is prevented.

Description

technical field [0001] The invention relates to a release mechanism of a three-position switch operating mechanism and a method thereof. Background technique [0002] With economic development and scientific and technological progress, the reliable operation of the power system plays an increasingly important role in safeguarding social development. The circuit breaker is an electrical device that controls the on-off of the distribution line. Under normal circumstances, the circuit breaker can connect or disconnect the transmission line according to the control command; when the power system fails, the circuit breaker is in the relay protection device With cooperation, the fault current can be quickly cut off, thereby preventing the accident from expanding. [0003] The three-position load switch has three positions of "closing", "isolation" and "grounding". The three positions are interlocked with each other. According to the function, it can be decomposed into a load swit...

AI Technical Summary

Problems solved by technology

[0004] The present invention improves the above problems, that is, the technical problem to be solved by the present invention is that when the existing three-position load switch is closed, the pull-up spring will repeatedly realize the process of energy storage and release, which is easy to cause shock vibration to the entire operating mechanism , in addition, a large torque needs to be input to the control shaft when opening the brake

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