A live replacement method for insulators that can prevent traction ropes from slipping

Abstract

The invention discloses a charged insulator replacing method capable of preventing a traction rope from slipping. Two to three connecting plates, a six anti-winding pulleys and a charged replacing fitting are used; the charged replacing fitting comprises a fitting body (3); one side of the fitting body is connected with a first isosceles-triangle-shaped connecting plate (7), and the other side of the fitting body is connected with a second connecting plate (14); the fitting body (3) is used for forming a groove into which the oblique edge of the first connecting plate (7) is embedded for fixing; the fitting body (3) is provided with a hook (1) for towing a fixing lead, and second and third pulleys. During replacement of an ultrahigh-voltage tension-resistant insulator string, the separation weight of the ultrahigh-voltage tension-resistant insulator string during charged replacement can be reduced, the fitting is prevented from slipping out easily, slippage and winding of the traction rope can be prevented, the working difficulty is lowered, and convenience is brought to easy charged replacement of the insulator string.

Description

technical field [0001] The invention relates to the field of electric power maintenance, in particular to a live replacement method for insulators capable of preventing traction ropes from slipping and fittings thereof. When the method is used to replace the UHV tension insulator strings, it can cooperate with the second and third trolleys and the hoist, which can reduce the detachment weight when the UHV tension insulator strings are replaced with electricity, and the fittings are not easy to slip out. At the same time, it can prevent the traction rope from slipping, reduce the difficulty of work, and facilitate the easy live exchange of the insulator string. Background technique [0002] In the past, extra-high voltage transmission lines, such as 220kV transmission lines, generally used double-split conductors, and the matching insulators also used double-string types. Its live exchange transmission line and its string insulators are important items in live work projects,...

AI Technical Summary

Problems solved by technology

In addition, due to the limitations of existing production specifications, usage habits, and manufacturing cost requirements, the existing connecting plates or fixtures used in series for live exchange insulators and used as main connecting components are standardized isosceles triangles or isosceles trapezoids, with oblique As a result, the operation of the tension insulator string is unstable and easy to slip out, resulting in the inability to easily replace the UHV tension insulator string, and even lead to safety accidents in severe cases

[0007] Furthermore, due to the heavy weight of the ultra- and ultra-high voltage tension insulator strings, manpower cannot loosen them. Even if the motorized winch is used, the operation is inconvenient and laborious; when replacing the tension insulator strings, two or three pieces of connection must be used. Slabs and two and three pulleys, multiple strings of tension insulator strings with a total weight of several tons, the gravity is easy to make the traction rope slip or entangle, and it is easy to cause friction between the traction rope and the high-altitude objects during high-altitude operations

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