Construction method for transferring large-span overhead line

Abstract

The invention discloses a construction method for transferring a large-span overhead line. The method comprises the steps that: a to-be-transferred end of the overhead line is connected through a first take-up device and a traction rope which are connected in series, and the middle part of the overhead line is connected with a new line rod through a second take-up device, wherein the overhead line is wound on a pay-off support at the upper part of an original line pole; an original line fastening clamp between the to-be-transferred end and the original line pole is dismounted; paying-off operation is performed on the first take-up device, and taking-up operation is performed on the second take-up device; and the middle part of the overhead line is connected with a new line pole by using a new line fastening clamp. The construction method is suitable for realizing transfer, laying and replacement of the overhead line in a large-span construction site with a complex environment. A constructor can effectively control the sag degree of the overhead line by controlling the take-up and pay-off states of the first take-up device and the second take-up device, so that the overhead line is closer to a straight line in the whole transfer process, and the safety and the operation convenience in the transfer process of the overhead line are improved.

Description

technical field [0001] The invention relates to the field of circuit construction, in particular to a construction method for transferring large-span overhead lines. Background technique [0002] In some areas of my country, long-span cross-river overhead power lines are very common. [0003] When an overhead power line needs to be adjusted according to the local power load, it is usually necessary to shift the tower at one end of the overhead power line. During the conventional shifting operation, the sag angle of the overhead power line is large, and such a long-span cross-river overhead power line is usually under the river with turbulent water flow, the national highway with a large flow of people, and residential areas, so For safety reasons, it is often necessary to take temporary protection measures such as river patrolling, highway interruption, line power outage, protection of buildings and structures, and prohibition of personnel from passing during construction. ...

AI Technical Summary

Problems solved by technology

At the same time, the shifting operation of such large-span river-crossing overhead power lines has a long construction time, a wide construction scope, and a complex construction environment, which inevitably brings risks to the construction area and affects production activities in the construction area

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