Double-operation-shaft three-position mechanism and interlocking operation method thereof

Abstract

The invention relates to a double-operation-shaft three-position mechanism and an interlocking operation method thereof, for solving the technical problem of poor design of a three-position interlocking anti-startup structure of an operation mechanism in a similar high-voltage switch product. The three-position mechanism comprises a front side plate, a middle side plate, a rear side plate, corresponding output gears and transition gears, and is mainly characterized in that a screw rod between the front side plate and the middle side plate is connected with a screw rod transition gear through the middle side plate, the screw rod and a screw rod shaft are provided with a nut plate, and a crank indirectly drives the output gears, the transition gears, a grounding transition gear and a screw rod transition gear to rotate through a corresponding isolation operation shaft or a grounding operation shaft to enable the screw rod to generate rotation and drive the nut plate to move back and forth on the screw rod and the screw rod shaft so as to realize successive switching among an isolation closing position, an isolation grounding opening position and a grounding closing position. In the structure provided by the invention, the isolation operation shaft and the grounding operation shaft realize joint prevention and interlocking at each operation position, and the screw rod realizes interlocking and startup prevention when driving the nut plate to move to a certain operation position and a work position.

Description

technical field [0001] The invention relates to a three-station mechanism of a high-voltage switch, which is a two-axis three-station mechanism and an interlocking operation method thereof. Background technique [0002] A high-voltage switch, or a high-voltage circuit breaker, can not only cut off or close the no-load current and load current in the high-voltage circuit, but also cut off the overload current and short-circuit current through the function of the relay protection device when the system fails. Perfect arc extinguishing structure and sufficient breaking capacity. The operation process mainly involves controlling the three stations of closing, opening and grounding of the high-voltage switch, that is, when the operating mechanism is in the closing position, the grounding operation cannot be performed, and when it is in the grounding position, the closing operation cannot be performed; thus Ensure the safety of the operating mechanism of the high-voltage switch a...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the above-mentioned deficiencies, the object of the present invention is to provide a dual-axis three-position mechanism and its interlocking operation method to the field, so as to solve the shortcomings of the design of the three-position interlocking anti-starting structure in the existing similar high-voltage switch products. good technical questions

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