Station lock crank three-station mechanism

Abstract

The invention relates to a station lock crank three-station mechanism which is designed to solve the technical problem that the limiting and the interlocking structures during crank grounding and theisolation opening and closing operation of like products are poorly designed in the existing similar products. A disc mounting shaft, a grounding switch operating shaft and an isolating switch operating shaft extend from one side of a gearbox of the three-station mechanism; and a shaft hole of the center of a station identification disc is fixedly connected with the disc mounting shaft. The main points are that arc-shaped sliding holes are symmetrically arranged in both sides of the shaft hole of the station identification disc; the both ends of the arc-shaped sliding holes are respectively provided with insertion holes for a ratchet wheel crank; and the arc-shaped sliding holes are crank pawl limiting grooves of the ratchet crank; the lower portions of the insertion holes of the oppositesides of the arc-shaped sliding holes are respectively aligned with the grounding switch operating shaft and the isolating switch operating shaft which extend into the arc-shaped sliding holes; the ground switch operating shaft and the isolating switch operating shaft are respectively provided with a first ratchet wheel and a second ratchet wheel; the station identification disc below the arc-shaped sliding holes is provided with four swinging pawls and corresponding reset springs; and the pawls play a role of holding against the crank pawls to realize braking.

Description

technical field [0001] The invention relates to a station lock crank, which is a three-station mechanism of the station lock crank. Background technique [0002] The three-position switch is often used in fully enclosed combined electrical appliances (GIS) or composite electrical appliances (PASS), and is not a separate product. It is often used in XGN ring network cabinets. The so-called three-position refers to three working positions: 1. The closing position where the main breakout of the isolation switch is connected, 2. The isolation position where the main breakout is separated, and 3. The grounding position on the grounding side. Some existing similar products use three-position mechanism of ratchet and pawl, such as the application number 201610034089.2 disclosed in the Chinese patent literature, the application publication date is 2016.04.20, and the name of the invention is "a single-axis operation three-position isolating switch operating mechanism ”; the operati...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide the field with a three-position mechanism of the rocker handle of the station lock, so that it can solve the problem of the limited position and interlock structure design during the grounding of the rocker handle and the isolation opening and closing operation in the existing similar products. Design more complex technical issues

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