Universal linear tower ground wire lifting device

Abstract

The invention relates to a universal linear tower ground wire lifting device. The device comprises a lower wire tightening screw (5), an upper wire tightening screw (4) which is sleeved at an upper portion of the lower wire tightening screw through thread matching and has inner and outer reverse threads, and a bearing cross section (3) and a pressure board (8) sleeved at the upper wire tighteningscrew through thread matching, a cantilever type aluminum alloy base (1) sleeved on two end connectors of the bearing cross section through end ear boards, an operation handle (10) sleeved at an upperend of the upper wire tightening screw, an integrated U-shaped slot connection head (6) processed at a lower end of the lower wire tightening screw, and a locking bolt (7) assembled at the connectionhead, wherein the cantilever type aluminum alloy base is an integral arch back structure, the back arch has a U-shaped slot (1a) with a slot opening facing downwards, an inner end of the base is processed with a groove (1b) penetrating up and down, and two side boards of the groove are taken as end head ear boards. The universal linear tower ground wire lifting device is advantaged in that lifting operation of power transmission line linear tower overhead ground wires is convenient, the wires can be rapidly lifted and reset, the device is further suitable for power transmission lines of all voltage grades, the device is light and labor-saving, and the device is safe and reliable.

Description

technical field [0001] The invention relates to the technical field of hoisting tools for overhead ground wires of straight towers of power transmission lines, in particular to a replacement tool for lifting ground wires to disengage them from fittings strings, thereby realizing a series of operations such as replacing ground wire insulators, fittings, and dropping wires. Background technique [0002] In the prior art, when replacing the insulators and fittings of the ground wire of the straight tower, and the operation of dropping the wire, there are the steel sleeve twisting lifting method, the gourd chain lifting method, and the special fixture method. [0003] The steel sleeve twisting lifting method is also the most primitive method. It uses the steel sleeve as a force-bearing tool for lifting the ground wire, that is, the steel sleeve is wrapped around the ground wire and the hanging plate, and then a wooden rod is used to pass through the steel sleeve. The steel sleev...

AI Technical Summary

Problems solved by technology

The disadvantage is: the operator must have a lot of strength, and it can only be used for ground lines with low downforce. When the vertical span exceeds 400m, it cannot be used.

The disadvantage is that the 3T hoist weighs 21kg, plus the steel sleeve, lifting rope and pulley, etc., the total weight of the tool is 40kg, which is very unfavorable for field work and high-altitude work

The disadvantage is that each fixture can only be used for the corresponding ground wire hanging board, and cannot be used when encountering other different forms of ground wire hanging boards, which cannot ensure the smooth completion of the work

Special fixtures are configured according to different tower types of different voltage levels (35kV, 110kV, 220kV, 500kV, 800kV). Meeting the work requirements not only complicates the work, but also causes excessive physical exertion

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