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Construction method of integral replacement of existing electric railway overhead contact system crossover and section insulator

A segmented insulator and electrified railway technology, applied in the direction of overhead lines, etc., can solve the problems of large number of vertical skylights, many safety hazards, and difficulty in implementation, and achieve the effect of getting rid of complete dependence, fewer operation items, and smaller task load

Active Publication Date: 2018-11-30
中铁建电气化局集团第三工程有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a construction method for the overall replacement of existing electrified railway catenary crossing lines and segmental insulators, so as to solve the problems of large number of vertical skylights required by the existing construction method, long time, many potential safety hazards and difficult implementation question

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  • Construction method of integral replacement of existing electric railway overhead contact system crossover and section insulator
  • Construction method of integral replacement of existing electric railway overhead contact system crossover and section insulator
  • Construction method of integral replacement of existing electric railway overhead contact system crossover and section insulator

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Embodiment Construction

[0032] The following is an example of the Fengsha Line expansion project to describe the present invention in detail. Fengsha Line approves vertical skylights for 60 minutes every month, and the effective construction time after power failure is about 40 minutes. Only 2 vertical skylights are approved for each station every month Skylights, affected by transportation, construction skylights are often canceled. Considering the Xuanhua Station of the Fengsha Line, there are 6 crossover lines involving segmental insulators between the uplink and downlink in this station, and 2 crossover lines only involve the anchor section across the uplink and downlink. According to the traditional construction method, 22 vertical skylights are needed regardless of the skylight time. According to the Fengsha Line, only 2 vertical skylights are approved for each station every month, and only 11 months of construction are required for the replacement of the crossing line at Xuanhua Station. Howeve...

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Abstract

The invention relates to a construction method of integral replacement of an existing electric railway overhead contact system crossover and a section insulator. The construction method includes following steps: a, decomposing and mooring the existing crossover; b, measuring decomposing length of a new crossover to be set up; c, setting up a long anchoring section of the new crossover, and removing a long anchoring section of the existing crossover; d, integrally replacing a new crossover short anchoring section and a new section insulator; e, performing suspension adjusting and power transmission operation. In actual work, according to actual conditions that railway busy mainline vertical skylights are short in blocking time, few in number and low in demand rate and existing overhead contact system crossover and station tracks are in a same anchoring section, the construction method is acquired through careful design and repeated verification. Inherent thinking of existing crossover and section insulator replacement construction processes is broken through, and construction efficiency and construction safety are remarkably.

Description

technical field [0001] The invention relates to the technical field of railway catenary construction, in particular to a construction method for overall replacement of existing electrified railway catenary crossovers and segmental insulators. Background technique [0002] The life cycle of the overall equipment of catenary for normal-speed railways in my country is generally 20 to 25 years. With the continuous increase of railway transport capacity and the continuous increase of train speed, the overall equipment loss of catenary is increased, which makes some railway catenary equipment run for a long time. Reach life cycle ahead of schedule. At present, the Beijing-Guangzhou Line, Shitai Line, Fengsha Line, Beijing-Baotou Line, Shanghai-Kunming Line and other busy railway lines have started the replacement of the overall equipment of the catenary. [0003] The replacement construction of catenary crossovers and section insulators of existing electrified railways involves si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60M1/28
CPCB60M1/28
Inventor 姜敏王永红陈宪祖杨刚耿藏军
Owner 中铁建电气化局集团第三工程有限公司
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