Method for replacing ground wire by crossing high-speed rail through old wire net sealing

Abstract

The invention discloses a method for replacing a ground wire by crossing a high-speed rail through old wire net sealing, and relates to the field of methods for replacing the ground wire of an overhead transmission line across the high-speed rail. The construction of replacing the ground wire across the high-speed rail generally adopts a method of erecting crossing frames on two sides of the high-speed rail for net sealing, and the construction method is long in construction period and high in construction cost. According to the method, old towers are utilized, a stretching all-in-one machineis adopted to drive tension, and an old ground wire is utilized to draw and unfold a new wire one by one, one phase comprises four sub-wires, the operations of net sealing and net dismounting are respectively carried out twice, a capping net is arranged below each sub-wire of each phase for protection when the wire is replaced, the capping net arranged when the wire of the ground wire is replacedis used for protection, phase wires and the ground wire on two sides of the old towers on two sides of a crossing point are protected by binding steel wire sleeves, and the installation of accessoriesis also protected after the capping net is dismounted. According to the method, the erecting of a crossing frame, the arranging of traction steel wire ropes is not needed, guiding ropes and tractionsteel wire rope switching links are avoided, the construction period can be shortened, the construction cost is reduced, and the construction safety is improved.

Description

technical field [0001] The invention relates to the field of methods for replacing ground wires of overhead transmission lines across high-speed railways, in particular to a method for replacing ground wires across high-speed rails by using old wires to seal the network. Background technique [0002] With the rapid occurrence of high-speed rail, replacing the old conductors of the overhead transmission lines across the high-speed rail can better ensure the safe operation of the high-speed rail, but the construction period for replacing the ground wire across the high-speed rail is short and difficult, and the high-speed rail needs to be operated at night During the blank period, the construction can only start after the network is sealed above the electrical equipment on the track. Usually, the method of setting up spanning frames on both sides of the high-speed rail is used to seal the network. This construction method has a long construction period and high construction co...

AI Technical Summary

Problems solved by technology

Usually, the method of setting up spanning frames on both sides of the high-speed rail is used to seal the network. This construction method has a long construction period and high construction costs

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