Universal fixture for replacement of self-explosion insulator of power transmission line and application method of universal fixture

Abstract

The invention relates to a universal fixture for replacement of a self-explosion insulator of a power transmission line and an application method of the universal fixture. The fixture comprises a front clamp and a rear clamp, wherein the front clamp and the rear clamp are connected by a lead screw, the front clamp comprises an outer clamp and an inner clamp, the outer clamp comprises an upper clamp and a lower clamp, the upper clamp and the lower clamp are connected by a bolt, the inner clamp comprises four arc movable clamping blocks, two movable clamping blocks are respectively arranged in the upper clamp and the lower clamp, an outer arc and an inner arc of each movable clamping block and an inner-hole arc of the outer clamp are concentrically arranged, a movable connection rod is arranged at an outer side of each movable clamping block, the other end of the movable connection rod is clamped in a corresponding sliding way in the outer clamp, a limitation bolt is arranged at an outer side of the outer clamp, penetrates through the outer clamp and then props against the movable connection rod, the movable clamping block can move along a radial direction under adjustment of the limitation bolt, and a spring is also arranged between the movable connection rod and the outer clamp. The inner clamp of the fixture disclosed by the invention employs a structure of the four movable clamping blocks, the fixture is large in adjustment range and high in universality, and the replacement demands of all insulators of 16t or below can be completely satisfied by employing the same fixture.

Description

technical field [0001] The invention relates to a maintenance tool for a high-voltage transmission line, in particular to a universal jig for replacing self-explosive insulators of a transmission line and a use method thereof. Background technique [0002] Glass insulators used in high-voltage transmission lines are prone to self-explosion due to voltage instability and natural loss. Conventional insulator replacement fixtures need to use various specifications and models of fixtures according to the tonnage of the glass insulator and the size of the steel cap. Since a line often uses glass insulators of various tonnages, various types of fixtures must be used during maintenance operations. It not only increases the cost of spare parts, but also makes the maintenance work time-consuming and laborious. [0003] The utility model patent with the application number 201520844704.7 discloses a "universal jig for the replacement of transmission line insulators". The handle for t...

AI Technical Summary

Problems solved by technology

However, the inner card still needs a variety of specifications, so it has not completely solved the problem of universal use of the fixture, and it is only suitable for replacement of "insulators of the same voltage level and the same tonnage", so the applicability is still poor

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