High-intensity sheath high-speed railway cable

Abstract

The present invention discloses a high-intensity sheath high-speed railway cable. The cable comprises a cable core unit, the cable core unit is internally provided with a plurality of insulation cores and filler, and the cable core unit is coated with polyolefin oversheath. An enhanced insulation wrapping layer, a welding aluminum alloy sheath, an extruded enhanced polyolefin middle sheath and an alloy aluminum strip chain armor coat from inside to outside between the cable core unit and the polyolefin oversheath. The high-intensity sheath high-speed railway cable uses enhanced protection materials with different forms from the cable core welding materials, a shielding layer, a middle protection layer to an armor layer according to the features of the processing process layer by layer, so that the vibration resistance, the impact resistance and the extruding resistance performances of the cable are effectively improved, and the machinery performance and the safety usage performance of the cable are greatly improved.

Description

technical field [0001] The invention relates to a cable, in particular to a high-speed railway cable with a high-strength sheath. Background technique [0002] High-speed railway cables are used for transmission of control information and monitoring between relevant signal equipment and control devices such as railway signal automatic blocking system, station coding, axle counting, computer chain dispatching concentration, dispatching supervision, microcomputer monitoring, high-power electric switch machines, etc. information and power. [0003] In order to improve the quality of the environment around the road and ensure and improve the safety of operation, the basic engineering of high-speed railway has been changed from ballasted track to ballastless track. The various cables (including power cables, communication cables, signal cables and various control cables) originally laid on both sides of the traditional ballasted railway track, the impact resistance, compression ...

AI Technical Summary

Problems solved by technology

The various cables (including power cables, communication cables, signal cables and various control cables) originally laid on both sides of the traditional ballasted railway track, the impact resistance, compression resistance, vibration resistance and environmental resistance of the sheath cannot meet the requirements. The new requirements of the ballastless track carrying the mission of high-speed operation cannot withstand the damage caused by the severe vibration caused by the high-speed operation line. The cable will be deformed due to external factors such as vibration, extrusion, and impact, and the outer sheath will also age rapidly. Cracking, which affects the various performances of the cables, resulting in personal and property safety accidents

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