Ultra-low-temperature-resistant cable for railway vehicle

Abstract

The invention relates to the technical field of cables. The invention further discloses an ultra-low-temperature-resistant cable for a railway vehicle. The cable comprises conductive cores, a first protective sleeve is arranged outside the conductive cores; a second protective sleeve is arranged outside the first protective sleeve; an anti-extrusion mechanism is arranged between the first protective sleeve and the second protective sleeve; a buffer layer is arranged outside the second protective sleeve; a shielding layer is arranged outside the buffer layer, an insulating layer is arranged outside the shielding layer, a wear-resistant layer is arranged outside the insulating layer, first heat preservation cotton is set between the interior of the first protective sleeve and the exteriors of the conductive cores, and second heat preservation cotton is set in the second protective sleeve. The ultra-low-temperature-resistant cable for the railway vehicle is high in low temperature resistance, capable of preventing extrusion force between the adjacent conductive cores from being too large, high in buffering performance and convenient for workers to use.

Description

technical field [0001] The invention relates to the technical field of cables, in particular to an ultra-low temperature resistant cable for rail vehicles. Background technique [0002] In recent years, my country's urban rail transit industry has developed rapidly and made remarkable achievements. As of December 31, 2012, more than 70 urban rail transit lines in 17 cities in mainland China alone have been put into operation, with a total operating mileage of 2064km. With the continuous acceleration of the urbanization process and the urgent need to solve urban traffic problems, various places have increased investment in urban rail transit construction. At present, not only provincial capital cities are basically building urban rail transit, but also many economies are relatively developed. prefecture-level cities are also under construction or are applying for construction. According to the preparation and approval progress of domestic urban rail transit construction pla...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a super low-temperature resistant cable for rail vehicles, which not only has strong low-temperature resistance, but also can avoid excessive extrusion force between adjacent guide cores, and has high buffer performance, which is convenient for workers It solves the problem that the cables used in the current rail vehicles have poor low temperature resistance, and are prone to damage and freeze damage in extremely cold environments.

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