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A wear-resistant and flame-retardant wire for subway construction

A wire and subway technology, used in conductors, insulated conductors, rubber insulators, etc., can solve problems such as easy breakdown of protective sleeves, cable body damage, and reduced flexibility, and achieve the effect of increasing flexibility, preventing wires from catching fire, and enhancing flexibility.

Active Publication Date: 2021-06-11
成都轨道建设管理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the distribution of multiple cable branch lines and the use of clusters to increase the strength and reduce its flexibility are not suitable for complex underground environments; at the same time, the form of supporting cables is used. The relative displacement of the inner wrapped cable body produces friction, which in turn damages the cable body. When the voltage is high, it is easy to break through the protective cover and cause a safety accident; grinding wire

Method used

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  • A wear-resistant and flame-retardant wire for subway construction
  • A wear-resistant and flame-retardant wire for subway construction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A wear-resistant and flame-retardant wire for subway construction, comprising an inner conductor layer, a shielding layer, and an insulating protective layer; the shielding layer is braided and wound on the inner conductor layer, and the insulating protective layer is uniformly covered to the shielding by injection molding The insulating protective layer includes an insulating flame-retardant layer and an insulating wear-resistant layer; the inner surface of the insulating and flame-retardant layer is evenly covered on the shielding layer, and the outer surface of the insulating and flame-retardant layer is evenly covered with an insulating and wear-resistant layer. Grinding layer; in order to further reduce the possibility of damage to the insulating protective layer by high voltage, the inner conductor layer is formed by winding three single silver wires with identical specifications and sizes; The wire is wound around the central axis, thereby increasing the current f...

Embodiment 2

[0025] The raw materials of the insulating flame retardant layer are changed to be composed of the following weight components: 30 parts of flame retardant particles, 30 parts of filler carriers, and 20 parts of cross-linked rubber; It is composed of the following weight components: 40 parts of natural rubber, 30 parts of vulcanizing agent, 20 parts of fibers; the remaining steps and raw materials are the same as those of Example 1.

Embodiment 3

[0027]The raw materials of the insulating flame retardant layer are changed to be composed of the following weight components: 40 parts of flame retardant particles, 40 parts of filler carriers, and 30 parts of cross-linked rubber; It is composed of the following weight components: 50 parts of natural rubber, 40 parts of vulcanizing agent, and 30 parts of fibers; the remaining steps and raw materials are the same as in Example 1.

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PUM

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Abstract

The invention discloses a wear-resistant and flame-retardant wire for subway construction, which comprises an insulating protective layer; the insulating protective layer includes an insulating flame-retardant layer and an insulating wear-resistant layer; the inner surface of the insulating flame-retardant layer evenly covers the shielding On the layer, the outer surface is evenly covered with an insulating and wear-resistant layer; the raw materials of the insulating and flame-retardant layer are composed of the following weight components: 30-40 parts of flame-retardant particles, 30-40 parts of filler carrier, 20-30 parts of Cross-linked rubber; the raw material of the insulating and wear-resistant layer consists of the following components by weight: 40-50 parts of natural rubber, 30-40 parts of vulcanizing agent, 20-30 parts of fiber; the beneficial effects of the present invention are: Use vulcanization waste liquid as a vulcanizing agent to increase the hardness of rubber; use carbon fiber to load vulcanizing agent to increase the flexibility of the wear-resistant layer; use metal flame-retardant particles to disperse voltage, clay or white carbon black to block high-voltage current, and cross-linked rubber to withstand heat , Enhance the flexibility of the rubber; use the rubber adhesive hot-melt bonding method, and the vulcanizing agent to cure the bond to increase flexibility.

Description

technical field [0001] The invention relates to the field of subway construction, in particular to a wear-resistant and flame-retardant wire for subway construction. Background technique [0002] Subway is a form of railway transportation, covering all kinds of underground and above-ground urban rail transit systems with exclusive rights of way, high density and high capacity, that is, "underground railway" or "subway" for short; Where the geological structure is stable, tunnel excavation shall be carried out by using the cut-and-cover and backfill method and the drilling and excavation method. At the same time, the open-cut method, the foundation pit cover excavation method and the foundation pit cover excavation method shall be adopted for the construction of the station. Simple suspension, chain suspension or The method of rigid suspension is used to set up the cables overhead; among them, because the overhead laying of cables needs to cope with different construction con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B7/18H01B7/295H01B7/02H01B3/28H01B7/17C08L83/04C08L23/16C08K3/22C08K7/26C08L7/00C08K11/00C08K7/06
CPCC08K7/06C08K11/005C08K2003/2227C08L23/16C08L83/04C08L2201/02C08L2203/20H01B3/28H01B7/0216H01B7/0275H01B7/17H01B7/183H01B7/1835H01B7/188H01B7/295C08K3/22C08K7/26C08L7/00
Inventor 王晓军杜攀嵘蔺怀州
Owner 成都轨道建设管理有限公司