Special tool for power-cut or live replacement of 220kV spacer

Abstract

The invention discloses a special tool for power-cut or live replacement of a 220kV spacer. The tool is characterized by comprising an upper hook and a lower hook, wherein a labor saving screw is respectively connected between the upper hook and the lower hook in a screw-thread fit manner; hook ends of the upper hook and the lower hook are respectively connected to a trigger locking hook; after trigger devices trigger, locking devices lock the trigger locking hooks, so that the upper hook and the corresponding trigger locking hook are closed to form a round structure, and the lower hook and the corresponding trigger locking hook are closed to form a round structure; one side of the upper hook is fixedly connected to a pulley, one side of the lower hook is fixedly connected to an insulating bar connecting piece, and a screw is fixed through screw locking devices. The tool has the following beneficial effects that the problems of tedious steps, long operation time, large working strength, high operating risk and the like of the previous operating method for replacement of the spacer can be solved, the working efficiency is greatly improved, and the working security of maintenance personnel is enhanced, so that the maintenance work for power-cut or live replacement of the 220kV spacer is more standardized and normalized.

Description

technical field [0001] The invention belongs to the electric power industry, and belongs to the technical field of a special tool for replacing 220kV spacer rods during power failure or live charging. Background technique [0002] On high-voltage transmission lines, in order to reduce wire corona discharge and interference to communication, split wires are generally used. At present, the 220kV transmission line uses double-split conductors. In order to ensure that the distance between the double-split wire harnesses remains unchanged to meet the electrical performance, reduce the surface potential gradient, and in the case of a short circuit, the electromagnetic force will not be generated between the wire harnesses, causing mutual attraction and collision, or even causing an instantaneous attraction collision, but the accident is eliminated. After that, it can return to the normal state, so spacers are installed at a certain distance in the span. The design spacing of the...

AI Technical Summary

Problems solved by technology

The disadvantages of this method are obvious: 1. There is a large uncertainty, the success rate of throwing the insulating wire rope is low, and it is more difficult to complete in windy weather; 2. It takes a long time to throw the insulating wire rope and the stator wire, and the physical energy of the operators is exhausted. Big, there is a big risk in the whole maintenance process

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