CN202093862U - High flexibility cable for rail transit vehicles - Google Patents
High flexibility cable for rail transit vehicles Download PDFInfo
- Publication number
- CN202093862U CN202093862U CN2011202123116U CN201120212311U CN202093862U CN 202093862 U CN202093862 U CN 202093862U CN 2011202123116 U CN2011202123116 U CN 2011202123116U CN 201120212311 U CN201120212311 U CN 201120212311U CN 202093862 U CN202093862 U CN 202093862U
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- CN
- China
- Prior art keywords
- core conductor
- cable core
- high flexibility
- cable
- rail traffic
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Abstract
A high flexibility cable for rail transit vehicles comprises a cable core conductor, wherein the cable core conductor is leftwards regularly twisted from a tinned copper wire, and the cable core conductor is externally provided with an inner liner, an insulation layer and an outer sheath from the inside to outside. The cable core conductor is leftwards regularly twisted from a harness which is made of the tinned copper wire. Or two outermost layers of the cable core conductor are leftwards regularly twisted from a tinned copper wire, while the other layers are leftwards regularly twisted from a harness which is made of the tinned copper wire. The cable core conductor is externally provided with a polyester film inner layer, an irradiation crosslinking low-smoke zero-halogen polyethylene insulation layer and an oil-proof and wear-proof tensile polyurethane elastic outer sheath from inside to outside. The high flexibility cable for rail transit vehicles is high in flexibility and has the advantages of resisting bending, oil and wear, being low in cost and the like; and the arrangement space is reduced effectively.
Description
Technical field
The utility model relates to cable, especially relates to a kind of rail traffic vehicles cable.
Background technology
Current, urban rail transit in China has entered a fast-developing phase, and track traffic will become the backbone of megalopolis public transport, the main public transport mode of big and medium-sized cities.As the rail traffic vehicles conveying capacity with transmit that one of supporting electric equipment of information---the rail traffic vehicles cable plays an important role to the whole rail traffic system.At present, rail traffic vehicles exists a lot of quality problems with cable, and one of them is that flexibility, the retractility of cable is all poor, runs in the process of laying when dilatory, crooked or mobile, can not be frequently reciprocal, and the space that makes cable laying occupy is big.
Also do not have at present to use the high flexibility cable that provides for rail traffic vehicles specially.Application number is that the patent documentation of CN200920047902.5 discloses a kind of communication flexible cable, its oversheath is PVC, this material is bigger to the sensitiveness of temperature, the easy hardening of material under the low temperature, follow the string, when temperature was higher, the molecular migration rate and the air thermal weight loss of material were big, the durability variation; Application number is that the patent documentation of CN200920213944.1 discloses a kind of flexible cable, and its cable core comprises cotton synthetic fibre silk fiber organization level, and pull resistance is poor, easily fracture.
The utility model content
At above-mentioned technical problem; the utility model provides a kind of rated voltage 3kV and following rail traffic vehicles high flexibility cable; by design cable core conductor structure and good insulation, the protective material of employing character; make and the utlity model has advantages such as high flexibility, bending resistance, oil resistant, scratch resistance mill; being specially adapted to wiring space is restricted; work under bad environment is in the demanding environment of fire protecting performance.
The technical solution of the utility model is as follows:
Rail traffic vehicles high flexibility cable comprises the cable core conductor, and described cable core conductor adopts tinned copper wire according to the regular stranded formation of left-hand, and the periphery of cable core conductor sets gradually inner covering, insulating barrier, oversheath from inside to outside.Described cable core conductor adopts the bunch of tin-coated copper monofilament formation according to the regular stranded formation of left-hand.Perhaps, the regular stranded formation of described cable core conductor outermost two-layer employing tinned copper wire left-hand, the bunch that all the other each layer employing tinned copper wires constitute is according to the regular stranded formation of left-hand.
Further technical scheme is:
Described regular when stranded according to left-hand, the stranded pitch diameter ratio of each layer is deferred to 9 by skin successively to internal layer respectively and is added 2 rule; Described inner covering is a polyester film, and described inner covering is wrapped structure, and wrapped Duplication is more than or equal to 20%; Insulating barrier is made of the low-smoke non-halogen flame-retardant oil resistant polyolefin material extrusion molding parcel through 125 ℃ of cross-linking radiations; Oversheath is that polyurethane elastomer material extrusion molding parcel constitutes.
The utility model beneficial technical effects is:
1, the bunch of tinned copper wire or tinned copper wire formation is soft, adopts left-hand bundle strand mode, and it is flexible preferably that cable core conductor of the present utility model is had, this is because all to a direction twisting, when bending, the slip surplus is bigger between each single line, so the good bending property of bunch.The stranded lay ratio of each layer of the utility model cable core conductor deferred to 9 by skin successively to internal layer and added 2 rules, has moderate pitch diameter ratio, and bunch twists easy shaping again and makes the utility model that good flexibility be arranged, and left-hand bundle strand makes the copper bunch be not easy to scatter simultaneously.Otherwise lay ratio is too small, and bunch is not easy to be shaped; Lay ratio is excessive, and then combination cable is flexible can reduce.
The two-layer employing tinned copper wire of outermost stranded can improve the smooth smoothness of power line and cable.
2, inner covering of the present utility model is a polyester film, polyester film mechanical strength height, good electrical property, and rigidity, hardness and toughness height, endurable thorn, rub resistance, high temperature resistant and low temperature, chemical proofing, oil resistance are good.
3, insulating barrier of the present utility model is the irradiated crosslinking low-smoke and halogen-free polyethylene, this material low smoke and zero halogen, and electrical property, excellent in flame retardance, oil resistance and flexibility are good.
4, oversheath of the present utility model is a polyurethane elastomer, and this material belongs to ep-type material, the mechanical strength height, and pliability is good under the low temperature, hydrolysis, oil resistant and solvent resistance excellence.
Description of drawings
Fig. 1 is the utility model schematic diagram.
Among the figure: 1, cable core conductor; 2, inner covering; 3, insulating barrier; 4, oversheath.
Embodiment
See Fig. 1, the utility model comprises cable core conductor 1, and the outside of cable core conductor 1 sets gradually inner covering 2, insulating barrier 3, oversheath 4 from inside to outside.Cable core conductor 1 adopts the bunch of tin-coated copper monofilament formation according to the regular stranded formation of left-hand.Perhaps, the regular stranded formation of the two-layer employing tinned copper wire of cable core conductor 1 outermost left-hand, the bunch that all the other each layer employing tinned copper wires constitute is according to the regular stranded formation of left-hand.
The bunch that above-mentioned tinned copper wire constitutes is regular stranded according to the regular left-hand stranded or tinned copper wire of left-hand, its arrangement architecture is: innermost layer is 1 bunch or tinned copper wire, evenly distributed 6 bunch of inferior internal layer or tinned copper wire, every layer increases by 6 bunch or tinned copper wire when outside again, stranded mode is regular arrangement concentric stranding, and stranded lay ratio is followed successively by 9,11 from outside to inside, 13,15 ...The line footpath of the stranded number of plies of cable core conductor (or the cable core cross-sectional area of conductor is long-pending) and tinned copper wire or bunch by the current capacity of cable according to the conventional design value.The multiple strand equipment of the pack equipment of bunch and cable is conventional equipment.
Inner covering 2 is a polyester film, and the parcel mode is wrapped, and wrapped Duplication is more than or equal to 20%.
Insulating barrier 3 is the low smoke and zero halogen polyethylene through 125 ℃ of cross-linking radiations, and the parcel mode is the extrusion molding parcel;
Oversheath 4 is an oil resistant tension abrasion resistant polyurethane elastomer.The parcel mode is the extrusion molding parcel.
Above-mentioned inner covering, insulating barrier, oversheath all adopt common process to make, and each material all adopts marketable material.
Claims (7)
1. rail traffic vehicles high flexibility cable comprises the cable core conductor, it is characterized in that described cable core conductor adopts tinned copper wire according to the regular stranded formation of left-hand, and the periphery of cable core conductor sets gradually inner covering, insulating barrier, oversheath from inside to outside.
2. rail traffic vehicles high flexibility cable according to claim 1 is characterized in that described cable core conductor adopts the bunch of tin-coated copper monofilament formation according to the regular stranded formation of left-hand.
3. rail traffic vehicles high flexibility cable according to claim 1 is characterized in that the regular stranded formation of described cable core conductor outermost two-layer employing tinned copper wire left-hand, and the bunch that all the other each layer employing tinned copper wires constitute is according to the regular stranded formation of left-hand.
4. according to claim 2 or 3 described rail traffic vehicles high flexibility cables, it is characterized in that described left-hand is regular when stranded, the stranded pitch diameter ratio of each layer is deferred to 9 by skin successively to internal layer respectively and is added 2 rule.
5. rail traffic vehicles high flexibility cable according to claim 1 is characterized in that described inner covering is a polyester film, and described inner covering is wrapped structure, and wrapped Duplication is more than or equal to 20%.
6. rail traffic vehicles high flexibility cable according to claim 1 is characterized in that described insulating barrier is made of the low-smoke non-halogen flame-retardant oil resistant polyethylene material extrusion molding parcel through 125 ℃ of cross-linking radiations.
7. rail traffic vehicles high flexibility cable according to claim 1 is characterized in that described oversheath is that polyurethane elastomer material extrusion molding parcel constitutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202123116U CN202093862U (en) | 2011-06-22 | 2011-06-22 | High flexibility cable for rail transit vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202123116U CN202093862U (en) | 2011-06-22 | 2011-06-22 | High flexibility cable for rail transit vehicles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202093862U true CN202093862U (en) | 2011-12-28 |
Family
ID=45368915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202123116U Expired - Fee Related CN202093862U (en) | 2011-06-22 | 2011-06-22 | High flexibility cable for rail transit vehicles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202093862U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102332329A (en) * | 2011-06-22 | 2012-01-25 | 江苏天地龙电缆有限公司 | Highly flexible cable utilized by rail transit vehicle |
| CN110120283A (en) * | 2019-05-09 | 2019-08-13 | 江苏亨通线缆科技有限公司 | A kind of drag chain cable and cable preparation method |
-
2011
- 2011-06-22 CN CN2011202123116U patent/CN202093862U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102332329A (en) * | 2011-06-22 | 2012-01-25 | 江苏天地龙电缆有限公司 | Highly flexible cable utilized by rail transit vehicle |
| CN110120283A (en) * | 2019-05-09 | 2019-08-13 | 江苏亨通线缆科技有限公司 | A kind of drag chain cable and cable preparation method |
| CN110120283B (en) * | 2019-05-09 | 2021-04-06 | 江苏亨通线缆科技有限公司 | Towline cable and cable preparation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111228 Termination date: 20160622 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |