Operation stand for exchanging insulators

Abstract

The invention provides an operation stand for exchanging insulators, which is suitable for a multi-voltage-class power transmission line of an electric power system. The operation stand consists of a stretcher bar capable of being hung on steel caps among ceramic bottles of the insulators, a steel cap hook is arranged at one end of the stretcher rod, and a seat plate and a pedal are arranged at the other end of the stretcher. The operation stand disclosed by the invention has a simple structure and is simply and firmly fixed on an insulator chain in hooking and hanging manner by fully utilizing a mechanical principle of a tamper frame and depending on a structure with double-chain insulators arranged in parallel, thus an operation posture of an operator on the insulator chain is well changed. After the operation stand disclosed by the invention is utilized, a person can operate on the insulator chain in a labor-saving and comfortable manner, so that the stability of the body of the person and the safety are improved.

Description

technical field [0001] The invention relates to an operation platform frame for replacing insulators. Background technique [0002] In September 2010, the Ningdong-Shandong ±660kV ultra-high voltage DC transmission line was completed, creating the three largest in the history of DC construction in my country and the world: the largest cross-sectional area of ​​conductors, the largest number of insulators, and the widest distance between lines. Although the development of maintenance tools and appliances is nearing completion, the maintenance methods and programs still need to be further improved. In particular, the replacement of tension-resistant single-piece insulators is more difficult due to the large spacing between insulator strings and the weight of single-piece insulators. Usually, operators on 500kV lines can work by riding on insulator strings, but ±660kV DC lines It won't work. The diameter of the insulator disk is 380mm, and the distance between the strings is ...

AI Technical Summary

Problems solved by technology

Although the research and development of maintenance tools and appliances is nearing completion, the maintenance methods and programs still need to be further improved.

In particular, the replacement of tension-resistant monolithic insulators is more difficult due to the large distance between the insulator strings and the weight of the monolithic insulators. Usually, operators on 500kV lines can work by riding on the insulator strings, but ±660kV DC lines it won't work

The diameter of the insulator disc is 380mm, and the distance between the strings is 650mm, so it is impossible for workers to sit on it

When entering the wire through the insulator, it can only be carried out by crawling or "crossing two short three". The physical stability of the operator is very poor, and there is no way to do other operations.

Because the insulator has a large tonnage and a large weight, and the jig for changing a single piece is also very heavy, so the operator can only carry out this work with a good working posture, which is time-consuming and laborious.

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