CN114974685B - A thin-walled multi-core shielded cable for railway vehicles and a production method thereof - Google Patents
A thin-walled multi-core shielded cable for railway vehicles and a production method thereofInfo
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- CN114974685B CN114974685B CN202210783973.1A CN202210783973A CN114974685B CN 114974685 B CN114974685 B CN 114974685B CN 202210783973 A CN202210783973 A CN 202210783973A CN 114974685 B CN114974685 B CN 114974685B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
- H01B1/026—Alloys based on copper
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/06—Insulating conductors or cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Insulated Conductors (AREA)
Abstract
本公开属于电缆技术领域，具体涉及一种铁路车辆用薄壁多芯屏蔽型电缆及其生产方法，包括：电缆本体，其横截面设置为圆形结构，所述圆形结构的中心设置有与所述电缆本体同轴设置的加强芯，所述加强芯周向方向的外侧设置有若干个线芯；所述线芯内设导线、用于缠绕所述导线的导线承载芯和设置在所述导线和所述导线承载芯外侧的硅油涂层，所述导线的外侧均匀涂覆有分散液涂层；电缆外层，设置在所述电缆本体的外部，由内向外依次为屏蔽层、屏蔽涂层和护套层。
The present disclosure belongs to the technical field of cables, and specifically relates to a thin-walled multi-core shielded cable for railway vehicles and a production method thereof, comprising: a cable body, the cross-section of which is arranged to be a circular structure, a reinforcing core coaxially arranged with the cable body is arranged at the center of the circular structure, and a plurality of wire cores are arranged on the outer side of the reinforcing core in the circumferential direction; a conductor is arranged inside the wire core, a conductor-bearing core for winding the conductor, and a silicone oil coating arranged on the outer side of the conductor and the conductor-bearing core, and the outer side of the conductor is uniformly coated with a dispersion coating; a cable outer layer is arranged on the outside of the cable body, and comprises a shielding layer, a shielding coating and a sheath layer from the inside to the outside.
Description
Technical Field
The disclosure belongs to the technical field of cables, and particularly relates to a thin-wall multi-core shielding type cable for a railway vehicle and a production method thereof.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
With the continuous development of the world high-speed railway technology, the commercial operation speed of high-speed trains is rapidly improved. The railway operation environment and conditions are extremely complex and various, long-distance continuous high-speed operation is required, the safety standard of the train is required to be strictly designed for ensuring the operation safety of the railway vehicle, the safety standard comprises fireproof, anti-collision, dynamics and other aspects, so that the safety protection functions of the train such as reliability, instability detection, smoke and fire alarm, shaft temperature monitoring, pantograph video monitoring and the like are improved, an intelligent sensing system is optimized according to the principle of 'fault guiding safety', the operation condition of the train is comprehensively monitored, the state of the train is sensed in real time, and the requirement on the cable performance for the railway train is higher.
Disclosure of Invention
In order to solve the problems, the present disclosure provides a thin-wall multi-core shielding cable for railway vehicles and a production method thereof, which are based on the improvement of the structure of the cable, so that the cable has special fireproof performance and has the outstanding advantages of high strength, high wear resistance, easy bending, light weight, small outer diameter, low toxicity, flame retardance, radiation resistance and the like.
According to some embodiments, a first aspect of the present disclosure provides a thin-walled multicore shielded cable for a railway vehicle, which adopts the following technical scheme:
a thin-walled, multi-core shielded cable for a railway vehicle, comprising:
The cable comprises a cable body, wherein the cross section of the cable body is of a circular structure, a reinforcing core which is coaxially arranged with the cable body is arranged in the center of the circular structure, and a plurality of wire cores are arranged on the outer sides of the reinforcing core in the circumferential direction;
The cable outer layer is arranged outside the cable body and sequentially comprises a shielding layer, a shielding coating and a sheath layer from inside to outside.
As a further technical limitation, the wires are stranded with class 5 silver-plated soft copper wires, and the copper wires are stranded with single arm suspension strands.
As a further technical definition, the dispersion coating is a polytetrafluoroethylene 60% concentrated dispersion.
As a further technical limitation, the wire carrying core is an aramid fiber carrying core, and the wires are uniformly wound on the wire carrying core at a pitch of 6 times the outer diameter of the wires.
As further technical limitation, a wire core support piece is filled between the reinforcing core and the wire core, the wire core support piece is made of foaming low-smoke halogen-free flame-retardant polyolefin materials, lubricating silicone oil is coated outside the insulating wire core, and the reinforcing core is arranged in the center of the wire core support piece.
As a further technical limit, the shielding layer is made of uniformly woven silver-plated copper wires for preventing cable signal leakage, a high-temperature-resistant fire-resistant coating is uniformly coated on the surface of the shielding layer to form a shielding coating, and the shielding coating is foamed and expanded when encountering fire so as to prevent the cable from being damaged by high temperature of external flame.
As a further technical limitation, the sheath layer adopts irradiation crosslinking low-smoke halogen-free flame retardant polyolefin, irradiation crosslinking is carried out after the polyolefin is extruded, the elongation under the load is controlled to be not more than 175% by a crosslinking thermal extension index, and the permanent deformation after cooling is not more than 15%.
According to some embodiments, a second aspect of the present disclosure provides a method for producing a thin-wall multi-core shielded cable for a railway vehicle, which adopts the following technical scheme:
a production method of a thin-wall multi-core shielding type cable for a railway vehicle comprises the following steps:
And coating polytetrafluoroethylene dispersion on the surfaces of the stranded and compacted silver-plated copper wires, and sintering.
Uniformly winding the wire coated with the polytetrafluoroethylene dispersion and sintered on a wire bearing core at a winding pitch of 6 times of the wire to form an insulating wire core;
placing the formed insulated wire core in a preformed hole in a wire core support;
coating a silicone oil coating on the surface of the insulated wire core;
And a shielding layer, a shielding coating and a sheath layer are sequentially arranged on the outer side of the wire core support piece.
As a further technical limitation, in the process of twisting and compacting the silver-plated copper wires, a single-arm hanging twisting mode is adopted, and the twisting outer diameter is controlled to be the minimum value through compacting by a diamond compacting die.
As a further technical limitation, a reinforcing core is placed in a preformed hole at the center of the wire core support, polytetrafluoroethylene dispersion is coated outside the wire and sintered to form insulation, and the wire is wound on the aramid fiber reinforcing core at a pitch of 6 times that of the wire to form an insulation wire core.
Compared with the prior art, the beneficial effects of the present disclosure are:
The silver-plated soft copper conductor is adopted, so that the service temperature of the cable can be increased, meanwhile, the plating metal is silver, the silver has excellent conductivity, the conductivity of the conductor can be effectively increased, the electric energy loss is lower, the insulating layer is arranged, excellent electric insulation performance is kept, meanwhile, excellent flame retardance and extremely low friction coefficient are achieved, damage to the insulating layer is effectively reduced in the moving process of the wire core, the tensile strength of the insulating wire core is improved through the arrangement of the conductor bearing core, and the overall tensile strength of the cable is improved through the arrangement of the center reinforcing core. Through the setting of insulating sinle silk outside coating, promote the whole slipping nature of cable insulation sinle silk. The cable has excellent flexibility and bending resistance. Through the outer setting of cable, effectively promote the shielding effect of shielding layer, reduce shielding inhibition coefficient, promote the fire resistance and the fire behavior of cable, effectively improved the life of cable.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate and explain the exemplary embodiments of the disclosure and together with the description serve to explain the disclosure, and do not constitute an undue limitation on the disclosure.
Fig. 1 is a schematic structural view of a thin-walled multicore shielded cable for a railway vehicle in accordance with an embodiment of the present disclosure;
Wherein, 1, silver-plated stranded copper wires, 2, polytetrafluoroethylene dispersion liquid coating, 3, aramid fiber bearing cores, 4, silicone oil coating, 5, insulation preformed holes, 6, a reinforcing core, 7, a silver-plated copper wire braided shielding layer, 8, a high-temperature-resistant fire-proof coating, 9, a wire core supporting piece, 10 and an irradiation crosslinking polyolefin outer sheath.
Detailed Description
The disclosure is further described below with reference to the drawings and examples.
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments in accordance with the present disclosure. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, are merely relational terms determined for convenience in describing structural relationships of the various components or elements of the present disclosure, and do not denote any one of the components or elements of the present disclosure, and are not to be construed as limiting the present disclosure.
In the present disclosure, terms such as "fixedly coupled," "connected," "coupled," and the like are to be construed broadly and refer to either a fixed connection or an integral or removable connection, or both, as well as directly or indirectly via an intermediary. The specific meaning of the terms in this disclosure may be determined according to circumstances by a person skilled in the relevant art or a person, and is not to be construed as limiting the disclosure.
Embodiments of the present disclosure and features of embodiments may be combined with each other without conflict.
Example 1
The first embodiment of the disclosure introduces a thin-wall multi-core shielding type cable for a railway vehicle.
A thin-walled multi-core shielded cable for a railway vehicle as shown in fig. 1, comprising:
The cable comprises a cable body, wherein the cross section of the cable body is provided with a circular structure, the center of the circular structure is provided with a reinforcing core which is coaxially arranged with the cable body, and the outer side of the reinforcing core in the circumferential direction is provided with a plurality of wire cores, wherein wires (silver-plated stranded copper wires 1 are adopted in the embodiment), a wire bearing core (aramid wire bearing core 3 is adopted in the embodiment) for winding the wires and a silicone oil coating 4 which is arranged on the outer sides of the wires and the wire bearing core are arranged in the wire core, and the outer sides of the wires are uniformly coated with a dispersion liquid coating (polytetrafluoroethylene dispersion liquid coating 2 is adopted in the embodiment);
The cable outer layer is arranged outside the cable body, and is sequentially provided with a shielding layer (silver-plated copper wire braided shielding layer 7 is adopted in the embodiment), a shielding coating (high-temperature-resistant fire-proof coating 8 is adopted in the embodiment) and a sheath layer (irradiation crosslinking polyolefin outer sheath 10 is adopted in the embodiment) from inside to outside.
As one or more embodiments, the wires are stranded by type 5 silver-plated soft copper conductors, silver-plated copper wires are stranded by single-arm suspension stranded wires and are tightly pressed by a diamond tightly pressing die, the stranded outer diameter is controlled to be the minimum value, and the outer diameter of the conductors is effectively reduced while the conductivity is maintained. The silver-plated soft copper conductor can not only improve the service temperature of the cable, but also effectively improve the conductivity of the conductor and lower electric energy loss because the plating metal is silver.
As one or more embodiments, the insulating layer is uniformly coated on the surface of the stranded copper wire by using polytetrafluoroethylene 60% concentrated dispersion, and sintered at 380-400 ℃ to a thickness of about 0.08mm. The polytetrafluoroethylene 60% concentrated dispersion is polytetrafluoroethylene aqueous dispersion containing nonionic surfactant stabilizer, and is modified polytetrafluoroethylene aqueous dispersion added with trace modified comonomer in polymerization process. The appearance is milky white or yellowish, and has excellent thermal stability, outstanding chemical inertness, excellent electrical insulation performance and low friction coefficient. Not only can maintain excellent electrical insulation performance, but also has excellent flame retardance and extremely low friction coefficient, and effectively reduces damage to an insulating layer in the process of moving a wire core. Has longer service life.
As one or more embodiments, the insulated wire core adopts a structure of uniformly winding on the aramid fiber wire bearing core, and the conductor after sintering is uniformly wound on the aramid fiber wire bearing core at a pitch of 6 times of the outer diameter of the conductor to form the insulated wire core. The cable is wound on the bearing core at uniform pitches, so that the flexibility of the cable can be greatly improved, the cable can move freely in the movement of the conductor, and the breakage of the copper wire due to the stress can be effectively avoided. The aramid fiber wire bearing core is a novel high-tech synthetic fiber, has excellent performances of ultrahigh strength, high modulus, high temperature resistance, acid and alkali resistance, light weight and the like, has the strength of 5-6 times of steel wires, the modulus of 2-3 times of steel wires or glass fibers, has the toughness of 2 times of steel wires, has the weight of only about 1/5 of that of the steel wires, and is not decomposed or melted at the temperature of 560 ℃. It has good insulation and ageing resistance, and has a long life cycle. The tensile strength of the insulating wire core can be improved by arranging the bearing core, and the service life of the cable is prolonged.
As one or more embodiments, the wire core support is formed by extruding a foaming type low-smoke halogen-free flame-retardant polyolefin material, and lubricating silicone oil is uniformly coated on the insulated wire core before extrusion so as to keep the insulated wire core to freely move in the support. Further improving the bending performance of the cable. Core retaining holes are formed in the 360-degree circumferential direction of the core support at equal intervals according to the number of the insulated core, and the thickness of the core support is about 0.5mm. Meanwhile, a high-strength aramid fiber reinforced core structure is arranged at the center of the core support piece, so that the overall breaking force of the cable is improved.
As one or more embodiments, the shielding layer is formed by uniformly braiding silver-plated copper wires, with a braid density of about 85%. The arrangement of the braiding layers can effectively prevent the influence of an external electromagnetic field on the inside, and meanwhile, leakage of internal signals can be prevented. The plating layer of the silver-plated copper wire can effectively improve the shielding effect of the shielding layer and reduce the shielding inhibition coefficient.
As one or more embodiments, the surface of the shielding layer is uniformly coated with a high-temperature-resistant fire-isolating coating, and the coating can be foamed and expanded when encountering fire and is not combusted, so that the flame can be effectively prevented from spreading. After foaming expansion, a heat insulation layer can be formed to prevent the damage of external flame to the inside of the cable. And the flame retardance and the fireproof performance of the cable are improved.
As one or more embodiments, the sheath layer adopts irradiation crosslinking low smoke halogen-free flame retardant polyolefin, after extrusion, the irradiation crosslinking is carried out by adopting an electron accelerator, the elongation under the load is controlled to be not more than 175% by a crosslinking thermal extension index, and the permanent deformation after cooling is not more than 15%. And after crosslinking, the physical and mechanical properties and corrosion resistance of the sheath are improved, so that the whole cable is protected.
Example two
The second embodiment of the disclosure describes a method for producing the thin-wall multi-core shielded cable for railway vehicles described in the first embodiment.
A production method of a thin-wall multi-core shielding type cable for a railway vehicle comprises the following steps:
And coating polytetrafluoroethylene dispersion on the surfaces of the stranded and compacted silver-plated copper wires, and sintering.
Uniformly winding the wire coated with the polytetrafluoroethylene dispersion and sintered on a wire bearing core at a winding pitch of 6 times of the wire to form an insulating wire core;
placing the formed insulated wire core in a preformed hole in a wire core support;
Insulating during formation of the preformed hole the surface of the wire core is coated with a silicone oil coating.
And a shielding layer, a shielding coating and a sheath layer are sequentially arranged on the outer side of the wire core support piece.
As one or more embodiments, in the process of twisting and compacting silver-plated copper wires, a single-arm hanging twisting mode is adopted, and the twisting outer diameter is controlled to be the minimum value through compacting by a diamond compacting die.
As one or more embodiments, the reinforcement cores are placed in preformed holes at the center of the core support.
As one or more embodiments, the wire is overcoated with a polytetrafluoroethylene dispersion and sintered to form insulation.
As one or more embodiments, the wire is wound on the aramid fiber reinforced core with a pitch of 6 times of the wire to form an insulated wire core.
As one or more embodiments, the surface of the insulated wire core is uniformly coated with a lubricating silicone layer.
As one or more embodiments, in the process of twisting and compacting silver-plated copper wires, a single-arm hanging twisting mode is adopted, and the twisting outer diameter is controlled to be the minimum value through compacting by a diamond compacting die.
As one or more embodiments, the reinforcement cores are placed in preformed holes at the center of the core support.
While the specific embodiments of the present disclosure have been described above with reference to the drawings, it should be understood that the present disclosure is not limited to the embodiments, and that various modifications and changes can be made by one skilled in the art without inventive effort on the basis of the technical solutions of the present disclosure while remaining within the scope of the present disclosure.
Claims (7)
1. A thin-walled, multi-core shielded cable for a railway vehicle, comprising:
The cable comprises a cable body, wherein the cross section of the cable body is of a circular structure, a reinforcing core which is coaxially arranged with the cable body is arranged in the center of the circular structure, and a plurality of wire cores are arranged on the outer sides of the reinforcing core in the circumferential direction;
The cable outer layer is arranged outside the cable body and sequentially comprises a shielding layer, a shielding coating and a sheath layer from inside to outside;
the wires are stranded by adopting type 5 silver-plated soft copper wires, and the copper wires are stranded by adopting single-arm suspension stranding;
Arranging wire core retaining holes at equal intervals in the 360-degree circumferential direction of the wire core support according to the number of the insulated wire cores, and arranging a high-strength aramid fiber reinforced core structure in the center of the wire core support;
the sheath layer adopts irradiation crosslinking low-smoke halogen-free flame retardant polyolefin, irradiation crosslinking is carried out after the polyolefin is extruded, the elongation under the load is controlled to be not more than 175% by a crosslinking thermal extension index, and the permanent deformation after cooling is not more than 15%;
A wire core supporting piece is filled between the reinforcing core and the wire core, the wire core supporting piece is made of foaming low-smoke halogen-free flame-retardant polyolefin materials, lubricating silicone oil is coated outside the insulating wire core, and the reinforcing core is arranged in the center of the wire core supporting piece.
2. A thin-walled multicore shielded cable for railway vehicles as in claim 1, wherein the dispersion coating is a polytetrafluoroethylene 60% concentrate dispersion.
3. A thin-walled multi-core shielded cable for railway vehicles as claimed in claim 1, wherein said wire-carrying core is an aramid wire-carrying core, and said wires are uniformly wound around said wire-carrying core at a pitch of 6 times the outer diameter of the wires.
4. A thin-walled multi-core shielded cable for railway vehicles as claimed in claim 1, wherein the shielding layer is made of uniformly woven silver-plated copper wires for preventing cable signal leakage, a high-temperature-resistant fire-resistant coating is uniformly coated on the surface of the shielding layer to form the shielding coating, and the shielding coating is foamed and expanded when encountering fire so as to prevent the cable from being damaged internally by high temperature of external flame.
5. A method for producing a thin-walled multicore shielded cable for railway vehicles, for producing the thin-walled multicore shielded cable for railway vehicles according to any one of claims 1 to 4, comprising:
coating polytetrafluoroethylene dispersion liquid on the surfaces of the stranded and compacted silver-plated copper wires and sintering;
uniformly winding the wire coated with the polytetrafluoroethylene dispersion and sintered on a wire bearing core at a winding pitch of 6 times of the wire to form an insulating wire core;
placing the formed insulated wire core in a preformed hole in a wire core support;
coating a silicone oil coating on the surface of the insulated wire core;
And a shielding layer, a shielding coating and a sheath layer are sequentially arranged on the outer side of the wire core support piece.
6. The method for producing a thin-walled multi-core shielded cable for railway vehicles according to claim 5, wherein the twisting outer diameter is controlled to a minimum value by a single arm twisting manner, and by a diamond compression die, during the twisting and compression of silver-plated copper wires.
7. A method for producing a thin-walled multi-core shielded cable for railway vehicles, as claimed in claim 5, wherein a reinforcing core is placed in a preformed hole at the center of the core support, the wire is coated with a polytetrafluoroethylene dispersion and sintered to form insulation, and the wire is wound on an aramid fiber reinforcing core at a pitch 6 times that of the wire to form an insulated core.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210783973.1A CN114974685B (en) | 2022-07-05 | 2022-07-05 | A thin-walled multi-core shielded cable for railway vehicles and a production method thereof |
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|---|---|---|---|
| CN202210783973.1A CN114974685B (en) | 2022-07-05 | 2022-07-05 | A thin-walled multi-core shielded cable for railway vehicles and a production method thereof |
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| CN114974685B true CN114974685B (en) | 2025-09-02 |
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| CN107633897A (en) * | 2017-09-20 | 2018-01-26 | 山东华凌电缆有限公司 | Railway locomotive cable and preparation method with special combustibility |
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| CN110189855A (en) * | 2019-07-02 | 2019-08-30 | 东方交联电力电缆有限公司 | Photoelectric composite cable for rail transit vehicles |
| CN216597108U (en) * | 2021-12-15 | 2022-05-24 | 江苏通光电子线缆股份有限公司 | Large-current-carrying-capacity high-shielding special control cable |
| CN216719546U (en) * | 2021-11-27 | 2022-06-10 | 尚纬股份有限公司 | Reinforced coal mining machine cable |
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2022
- 2022-07-05 CN CN202210783973.1A patent/CN114974685B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107633897A (en) * | 2017-09-20 | 2018-01-26 | 山东华凌电缆有限公司 | Railway locomotive cable and preparation method with special combustibility |
| CN108550423A (en) * | 2018-06-08 | 2018-09-18 | 安徽华星电缆集团有限公司 | A kind of anti-interference buggy ladle cable of high strength flexible and preparation method thereof |
| CN110189855A (en) * | 2019-07-02 | 2019-08-30 | 东方交联电力电缆有限公司 | Photoelectric composite cable for rail transit vehicles |
| CN216719546U (en) * | 2021-11-27 | 2022-06-10 | 尚纬股份有限公司 | Reinforced coal mining machine cable |
| CN216597108U (en) * | 2021-12-15 | 2022-05-24 | 江苏通光电子线缆股份有限公司 | Large-current-carrying-capacity high-shielding special control cable |
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| CN114974685A (en) | 2022-08-30 |
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