Anti-cracking railway digital signal cable

A technology for digital signal cables and railways, applied in the direction of communication cables, insulated cables, cables, etc., can solve problems such as cable sheath cracking, potential safety hazards, affecting cable transmission and service life, and achieve the effect of enhancing service life and avoiding damage

Inactive Publication Date: 2011-06-29
TONGDING INTERCONNECTION INFORMATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cables with this structure can be used in the central plains and southern regions of my country, but in northeast my country, northwest Xinjiang, Qinghai, Tibet, Inner Mongolia and other regions, the cable sheath of this structure often cracks, which affects the transmission and service life of the cable. , and there are certain security risks

Method used

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  • Anti-cracking railway digital signal cable
  • Anti-cracking railway digital signal cable

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Embodiment Construction

[0010] The implementation of the railway digital signal cable of the present invention will be described in detail below in conjunction with the accompanying drawings:

[0011] Such as figure 1 The shown cable, which is mainly used on railway lines, mainly includes a cable core and a sheath 2 covering the outer periphery of the cable core, wherein the cable core includes a plurality of wire group units 1, and each wire group unit 1 is composed of four Single wires 11 are twisted, and polyester yarn 12 is wrapped around them. In this embodiment, there are four wire group units 1 in the cable, and each wire group unit 1 is formed by twisting four single wires 11, and four The four-wire group unit 1 is wrapped by a non-hygroscopic insulating material tape 26, and the sheath 2 is located on the outer periphery of the tape 26. In this embodiment, the sheath 2 includes argon arc welding from the inside to the outside. Alloy aluminum sheath 21, the aluminum sheath 2 is coated with a...

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Abstract

The invention relates to an anti-cracking railway digital signal cable which comprises a plurality of cable units and a jacket wrapped at the periphery of the cable units, wherein the jacket sequentially comprises an alloy aluminum protective layer which is longitudinally wrapped and welded at the periphery of the cable units, a high-density polyethylene inner protective layer extruded outside the alloy aluminum protective layer, a steel belt wrapped at the periphery of the high-density polyethylene inner protective layer, a diphenyl ether weftless belt wrapped at the periphery of the steel belt and a high-density polyethylene outer protective layer extruded outside the weftless belt. By using the high-density polyethylene materials as the inner protective layer and the outer protective layer of the cable, the railway digital signal cable has the characteristics of environmental stress crack resistance, low temperature resistance, wear resistance and ultraviolet irradiation resistance, and can be used in all regions. Simultaneously, the diphenyl ether weftless belt is used outside the steel belt, thereby preventing the steel belt from damaging the outer protective layer, and further prolonging the service life of the cable.

Description

technical field [0001] The invention relates to a railway digital signal cable. Background technique [0002] The existing railway digital signal cable consists of a cable core and a sheath covering the outer periphery of the cable core. The sheath is usually an inner sheath made of linear low-density polyethylene material, hot-dip galvanized The armor layer is made of steel tape and the outer sheath is made of linear low density polyethylene. Cables with this structure can be used in the central plains and southern regions of my country, but in northeast my country, northwest Xinjiang, Qinghai, Tibet, Inner Mongolia and other regions, the cable sheath of this structure often cracks, which affects the transmission and service life of the cable. , and there are certain security risks. Contents of the invention [0003] The object of the present invention is to provide a railway digital signal cable which can be used for a long time in cold or frozen land without cracking. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B11/00H01B7/18H01B7/20H01B7/22
Inventor 沈小平范更生钱慧芳周江陶煜健
Owner TONGDING INTERCONNECTION INFORMATION CO LTD
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