Power and control combined cable for rail transit vehicle

Abstract

The invention provides a power and control combined cable for a rail transit vehicle, which comprises a combined cable core, wherein the combined cable is formed by twisting three power liens and a control signal line which are in mutual contact, each power line respectively comprises a cable core conductor, an inner liner and an insulation layer from inside to outside, and the control signal line comprises a cable core conductor, an isolation layer, a shielding layer and a lapped layer from inside to outside; and a filling layer is arranged on a twisting structure of the combined cable core,and the lapped layer and an outer jacket cover the periphery of the filling layer. The cable core conductor of each power line is formed by adopting a tinned copper wire or a bunch formed by the tinned copper wire in a leftward regular twisting manner, and the cable core conductor of the control signal line is formed by adopting a tinned copper wire with an insulation layer or a bunch in a leftward regular twisting manner. The invention realizes simultaneous operation of power transmission and control signal transmission which are in the same wrapping space and are not mutually interfered, sothat the laying space of the cable is greatly reduced, and the cable has the advantages of low loss, flexibility, bending resistance, oil resistance, fire prevention, environmental friendliness and the like.

Description

technical field [0001] The invention relates to cables, in particular to a dynamic control combination cable for rail transit vehicles. Background technique [0002] At present, my country's urban rail transit has entered a period of rapid development. As one of the supporting electrical components for rail transit vehicles to transmit energy and transmit information, cables for rail transit vehicles play an important role in the entire rail transit system. [0003] Rail transit vehicles have high requirements on the laying space of wires and cables, and require a small laying space. In the prior art, in order to reduce the wiring space of rail transit vehicles, locomotive suppliers lay multiple power cables and several control cables at the same time in a very small space. In a narrow area or space, the signals interfere with each other, leaving a safety hazard for rail transit; secondly, the rapid running of the train causes friction between the power cable and the control...

AI Technical Summary

Problems solved by technology

[0004] The patent document with the application number CN200620127141.0 discloses a dynamic control combined cable. The cable evenly distributes the control wire cores on the periphery of the three power wire cores and the wrapping layer, so that the control wire cores are easily stretched, bent, Destroyed by heat, etc.; the patent document with the application number CN200920299700.X discloses a special dynamic control combination cable for ladle cars, which does not provide the material and twisting method of the power and control cores; the patent document with the application number CN200920044725.5 The patent literature discloses a torsion-resistant data power composite cable. The cable has eight power lines evenly arranged on the outside of the four signal lines and the isolation layer. Although the torsion resistance is greatly improved, the deformation of the inner core is large when it is bent, and the outer core is larger. The core deformation is small, and long-term bending will cause damage due to uneven force on the core; the patent document with application number CN200920035540.8 provides a halogen-free and UV-resistant flexible cable for solar power generation. The cable conductor is tinned copper wire Stranded bare copper wire, but it is just a simple twist, without considering the different stress, strain and bending resistance of wire bundle twist and normal twist

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