Cable for rail transit vehicle
A rail transit vehicle and cable technology, which is applied in the direction of insulated cables, bendable cables, cables, etc., can solve the problems of cable flexibility, fire resistance, poor heat resistance, and the reliability and safety of cables cannot meet the use requirements, etc., to achieve Improve the shielding performance, the internal structure is compact and stable, and the effect of not being loose
Pending Publication Date: 2020-07-03
安徽国电电缆股份有限公司
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Problems solved by technology
At present, the reliability and safety of cables used in rail transit vehicles cannot meet the requirements for use, and the flexibility, fire resistance and heat resistance of cables are relatively poor.
Method used
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Embodiment Construction
[0011] Such as figure 1 As shown, a cable for a rail transit vehicle includes a wire core 1 and a wire core 2, the wire core 1 includes a conductor 1, and the outer side of the conductor 1 is coated with a high temperature resistant insulating layer 2 and carbon Black paper insulation shielding layer 3, twisted four conductors 1 and covering the outer side with a ceramic fiber heat-insulating braid 4, the core 2 includes a conductor 2 5, which is coated on the outside of the conductor 2 5 in turn There are high temperature resistant insulation layer 2 6 and galvanized steel wire braided shielding layer 7, two conductors 2 5 pairs are twisted, and the outer side is covered with an oval rubber skeleton 8, and the two wire cores 1 and 2 wire cores 2 are arranged at intervals And twisted, after twisted, the outer side is covered with Kevlar fiber braided layer 9, glass fiber braided layer 10, aluminum-plastic composite belt protective layer 15, polyurethane elastic sleeve 11 and T...
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The invention discloses a cable for a rail transit vehicle. The first wire core comprises a first conductor. The outer side of the first conductor is sequentially coated with a high-temperature-resistant insulating layer I and a carbon black paper insulating shielding layer. The four first conductors are stranded and then wrapped by a ceramic fiber heat insulation braid layer. The second wire corecomprises second conductors, the two second conductors are stranded in pairs and then wrapped by an oval rubber framework, and the two first wire cores and the two second wire cores are arranged at intervals and are stranded in a bundled mode. The cable is reasonable in structural design, compact and stable in internal structure, and is round and tidy and compact. Strand loosening does not easilyoccur. The cable can be repeatedly bent and dragged without deformation. A plurality of grooves are formed in the inner wall of the polyurethane elastic sleeve in the axial direction, a rubber rod isarranged in each groove, the tensile property and the distortion resistance of the cable are greatly improved, the outer side of the cable is wrapped by a Kevlar fiber braided layer, a glass fiber braided layer, the polyurethane elastic sleeve and a TPE elastic body sheath, and the fireproof, waterproof and oil-proof effects are greatly improved.
Description
technical field [0001] The invention relates to the technical field of cables, in particular to a cable for rail transit vehicles. Background technique [0002] At present, my country's urban rail transit has entered a period of rapid development, and rail transit will become the backbone of public transportation in megacities and the main public transportation mode in large and medium-sized cities. As one of the supporting electrical equipment 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. At present, the reliability and safety of cables used in rail transit vehicles have not yet met the requirements for use, and the flexibility, fire resistance, and heat resistance of cables are relatively poor. Contents of the invention [0003] The object of the present invention is to provide a cable for rail transit vehicles in order to remedy the defects of the prior ...
Claims
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IPC IPC(8): H01B7/04H01B7/17H01B7/18H01B7/28H01B7/282H01B7/288H01B7/29
CPCH01B7/04H01B7/17H01B7/18H01B7/1865H01B7/28H01B7/2825H01B7/288H01B7/29
Inventor 肖本国王康孙磊张驰单宽宽郭守恒叶青云王影
Owner 安徽国电电缆股份有限公司