Single-motor three-station actuator and mechanical locking protection device thereof

Abstract

The invention relates to a single-motor three-station actuator and a mechanical locking protection device thereof. The single-motor three-station actuator comprises a limiting turntable and a limiting device; the limiting device comprises a switching-on stop block and a switching-off stop block which are used for performing one-way limiting on the limiting turntable; the switching-on stop block limits the rotation direction of the limiting turntable in isolation switching on and grounding switching off; the limiting direction of the switching-on stop block is opposite to the limiting direction of the switching-off stop block; the switching-on stop block and the switching-off stop block are both in transmission connection with an automatically resettable driving mechanism which makes the switching-on stop block or the switching-off stop block avoid the limiting turntable and an elastic resetting device which makes the switching-on stop block or the switching-off stop block automatically reset; the switching-on stop block is in transmission connection with a first travel switch which starts a driving motor after the switching-on stop block is triggered in isolation switching on and grounding switching off and turns off the driving motor after the limiting turntable drives the switching-on stop block to be triggered in isolation switching off and grounding switching on; and the switching-off stop block is in transmission connection with a second travel switch the functions of which are opposite to the functions of the first travel switch. With the single-motor three-station actuator and the mechanical locking protection device thereof of the invention adopted, the problem of complicated structure of the mechanical locking protection device of an existing single-motor three-station actuator can be solved.

Description

technical field [0001] The invention relates to the field of a three-station operating mechanism, in particular to a single-motor three-station operating mechanism and a mechanical locking protection device thereof. Background technique [0002] With the development of science and technology, people combine the two independent components of the isolating switch and the grounding switch into a three-position combination component of the isolating / grounding switch. The combined GIS is smaller in size, and the operating mechanism after the combination of the two is also From the previous two-position mechanism that independently operated the isolation switch or the grounding switch, it becomes a three-position mechanism that can operate both the isolation switch and the grounding switch. The currently used three-station mechanism is roughly divided into two types. One is that two motors and two sets of driving devices synthesize one output through the crank sheave structure, th...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a mechanical locking protection device for a single-motor three-position operating mechanism to solve the problem of the low debugging efficiency of the mechanical locking protection device for a single-motor three-position operating mechanism in the prior art and the inability to The problem of effectively protecting the switch body

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