Environmentally friendly gas cabinet isolating switch spindle

Abstract

Provided is an environment-friendly gas cabinet isolating switch main shaft. The environment-friendly gas cabinet isolating switch main shaft comprises a base which is provided with three vertical convex columns, each convex column is hollow and forms a slideway, three notches are formed in the front side wall of the base, the notches are communicated with the slideways respectively, the base is provided with multiple rounded pieces which are coaxial with the base, at least four rounded pieces are arranged between every two adjacent convex columns, at least one rounded piece is arranged at each end of the base, front arc-shaped plates penetrating through the rounded pieces are arranged on the front side wall of the base, the top of each front arc-shaped plate is connected with and is flush with the top of the base, the bottom of each front arc-shaped plate is flush with the axis of the base, a rear arc-shaped plate penetrating through the rounded pieces is arranged on the rear side wall of the base, the top of the rear arc-shaped plate is flush with the axis of the base, the bottom of the rear arc-shaped plate is flush with and is connected with the bottom of the base, the base, the convex columns, the rounded pieces, the front arc-shaped plates and the rear arc-shaped plate are made into a whole by means of a high-strength non-metal material, and a cylindrical metal insert and a polygonal metal insert are embedded in the two ends of the base respectively. According to the environment-friendly gas cabinet isolating switch main shaft, few parts are used, assembling is convenient, the insulating property is good, and safe and stable work can be achieved without SF6 gas.

Description

technical field [0001] The invention relates to an environment-friendly gas switchgear, specifically an environment-friendly gas switchgear installed in the environment-friendly gas switchgear, usually used as a knife-type moving contact driving part of a three-station isolation or grounding switch, and has an insulating effect. Gas cabinet isolating switch spindle. Background technique [0002] Such as Image 6 As shown, the traditional isolating switch main shaft usually includes a driving main shaft 14 made of hexagonal steel or square steel. The driving main shaft 14 runs through the entire isolating switch transversely. There are connecting rods 13, and the other end of each connecting rod 13 is hinged with the moving contact 17 through the joint 16. When working, the driving mechanism 12 drives the moving contact 17 to move through the driving main shaft 14, the cam 15, the connecting rod 13 and the joint 16 in sequence. , so as to realize the separation and contact o...

AI Technical Summary

Problems solved by technology

[0003] The main shaft of the above isolating switch has the following defects in the actual application process: 1. It is assembled from more than a dozen parts, and there are many parts, which makes the assembly troublesome, and this structure can only be used for SF6 inflatable switches. When SF6 gas Leakage occurs, and the insulation safety performance cannot be guaranteed after the air pressure is reduced; 2. The assembly gaps between the parts assembled with each other are superimposed invisibly, and the assembly gaps are too large to make the opening and closing actions of the three moving contacts 17 asynchronous; 3. 1. The drive spindle 14 itself is a conductor, and it becomes a hidden danger point of insulation failure in a switch with high insulation performance requirements; Insulation requirements can only be met when it is filled with SF6 gas and maintains a high air pressure, and it cannot meet the insulation safety requirements in an air environment.

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