Railway digital signal cable with skeleton structure
A technology of digital signal cable and skeleton structure, applied in bendable cables, cables with double-stranded/quad-stranded, insulated cables, etc., can solve the problem of large transmission loss, poor shielding performance and bending performance, Cable crosstalk interference and other problems, to achieve the effect of reducing mutual interference, high structural stability and good symmetry
Pending Publication Date: 2020-12-22
江苏通鼎光电科技有限公司
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Problems solved by technology
Due to design defects, ordinary railway digital signal cables lead to unstable cable structure and poor symmetry, resulting in serious cable crosstalk interference, large impedance and attenuation, poor shielding performance and bending performance, and large transmission loss, which cannot meet the needs of use well.
Method used
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[0022] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0023] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention Creation and simplification of description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should no...
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The invention provides a railway digital signal cable with a skeleton structure. The railway digital signal cable comprises a cable core and a protective layer wrapping the outer side of the cable core. The cable core comprises a central framework, four U-shaped grooves are uniformly distributed in the outer edge of the central framework, and a four-wire group is arranged in each U-shaped groove;the four-wire group comprises four insulating single wires with different colors; and the protective layer comprises a cable core wrapping tape, a heat insulation layer, a copper strip shielding layer, an inner cushion layer, an armor layer and an outer sheath which are sequentially wrapped. The cable has the advantages of being high in structural stability and good in symmetry, the indexes such as impedance, crosstalk and attenuation of the cable can be effectively improved, and the performance such as mutual interference between core wires is reduced. Meanwhile, the cable is good in flexibility, not liable to deform, good in tensile strength and bending performance, has a high-sensitivity electromagnetic interference shielding function, and also has noise reduction, dust prevention, flame retardance and wear resistance.
Description
technical field [0001] The invention belongs to the technical field of cables, in particular to a railway digital signal cable with a skeleton structure. Background technique [0002] Railway digital signal cables are used as railway train control automatic devices and ground equipment for overspeed protection systems, microcomputer interlocking, microcomputer monitoring systems, high-power electric switch machines and other related signal equipment and control devices to transmit control information, monitoring information and electric energy. The function is extraordinary, and it plays a very important role in ensuring the safety of trains and personnel. Due to design defects, ordinary railway digital signal cables lead to unstable cable structure and poor symmetry, resulting in serious cable crosstalk interference, large impedance and attenuation, poor shielding performance and bending performance, and large transmission loss, which cannot meet the needs of use well. . ...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H01B7/18H01B7/02H01B7/04H01B7/17H01B7/295H01B11/08
CPCH01B7/02H01B7/04H01B7/17H01B7/18H01B7/295H01B11/08
Inventor 沈小平周江杨力沈林林
Owner 江苏通鼎光电科技有限公司