Wear-resistant rail traffic locomotive cable

Abstract

The invention discloses a wear-resistant rail traffic locomotive cable. The wear-resistant rail traffic locomotive cable comprises a plurality of conductors, wherein the plurality of conductors are all formed by stranding and twisting the fifth-type tin-plated copper wires and aramid yarns, the stranding pitch ratio is not larger than 20 times, insulation layers wrap the plurality of conductors toform insulation wire cores, the insulation wire cores are twisted and bundled to form a cable core, an isolation layer and a composite shielding layer sequentially wrap the cable core, an armoring layer wraps the composite shielding layer, a sheath layer is formed outside the armoring layer in an extruded manner, and a waterproof layer wraps the sheath layer. The cable core is high in strength, core breakage is difficult to generate, and meanwhile, the wear-resistant rail traffic locomotive cable has favorable flexibility; and moreover, the cable has the advantages of favorable high- and low-temperature resistance, tear resistance, wear resistance, water prevention and shielding and bending characteristics.

Description

technical field [0001] The invention relates to cables, in particular to a wear-resistant rail transit locomotive cable. Background technique [0002] With the rapid development of the national railway system, the demand for locomotive cables is increasing year by year. Considering that in some locomotive vehicle control systems, due to heat dissipation and high external direct sunlight temperature, cables generate relatively high heat when energized. It is easy to cause the insulation layer to soften, resulting in short circuit of the cable, and then causing fire and other accidents. The common mica tape wrapping is very prone to moisture, which leads to poor fire resistance. These shortcomings and technologies limit the use of the product, causing safety hazards and accidents. On the other hand, small cross-section cables are often used in control systems. Therefore, it is urgent to develop environmentally friendly cables with properties such as halogen-free, low smoke, w...

AI Technical Summary

Problems solved by technology

The common mica tape wrapping is very prone to moisture, which leads to poor fire resistance. These shortcomings and technologies limit the use of the product, causing safety hazards and accidents. On the other hand, small cross-section cables are often used in control systems. Therefore, it is urgent to develop environmentally friendly cables with properties such as halogen-free, low smoke, wear resistance, high temperature resistance, fire resistance, and high strength, which are used in cables for railway rolling stock

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