CN204440924U - Subway communication pair twist shielded type cable - Google Patents
Subway communication pair twist shielded type cable Download PDFInfo
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- CN204440924U CN204440924U CN201420870429.1U CN201420870429U CN204440924U CN 204440924 U CN204440924 U CN 204440924U CN 201420870429 U CN201420870429 U CN 201420870429U CN 204440924 U CN204440924 U CN 204440924U
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Abstract
The utility model discloses a kind of subway communication pair twist shielded type cable, described subway communication pair twist shielded type cable comprises cable inner core, and the screen be coated on successively from inside to outside outside described cable inner core and restrictive coating, described screen forms by netted copper strips is wrapped, and the thickness of described screen is more than or equal to 0.05mm; Described cable inner core forms by many pair twist cores are stranded, described pair twist core forms by two insulated wire cores are stranded, described insulated wire cores comprises conductor and is coated on the insulating barrier outside described conductor, and described conductor is twisted by many copper wire bundles and forms, and the filament diameter of described copper wire is less than 0.18mm.The beneficial effects of the utility model: screen forms by netted copper strips is wrapped; be not damaged better to protect cable inner core; improve the useful life of subway communication pair twist shielded type cable; compared to braid shielded; wrapped netted copper strips substantially increases operation progress, and reduces because of problems such as easily puncturing of causing of knitted burr.
Description
Technical field
The utility model relates to power cable technical field, more particularly, relates to a kind of subway communication pair twist shielded type cable.
Background technology
At present, be applicable to the shielded cable of communication audio frequency, broadcast stereo system, automation occasion, the production method of its screen is mainly woven.Woven mode of operation operation progress is slow, and braiding semi-finished product very easily touch the lubricating oil of braiding machine inside, cause braid to be polluted, and causes wire rod in use because braid oxidation causes electrical property to decline, finally affects the use of product.
Utility model content
The technical problems to be solved in the utility model is, for above-mentioned defect of the prior art, provides a kind of subway communication pair twist shielded type cable.
The utility model solves the technical scheme that its technical problem adopts:
A kind of subway communication pair twist shielded type cable is provided, comprises cable inner core, and the screen be coated on successively from inside to outside outside described cable inner core and restrictive coating, described screen forms by netted copper strips is wrapped, and the thickness of described screen is more than or equal to 0.05mm; Described cable inner core forms by many pair twist cores are stranded, described pair twist core forms by two insulated wire cores are stranded, described insulated wire cores comprises conductor and is coated on the insulating barrier outside described conductor, and described conductor is twisted by many copper wire bundles and forms, and the filament diameter of described copper wire is less than 0.18mm.
In subway communication pair twist shielded type cable described in the utility model, the filament diameter of described copper wire is less than 0.16mm, and the monofilament elongates rate of described copper wire is greater than 20%.
In subway communication pair twist shielded type cable described in the utility model, the external diameter of described insulated wire cores is less than 1.8mm.
In subway communication pair twist shielded type cable described in the utility model, described pair twist core comprises three, and three described pair twist cores are uniformly distributed in " bifurcation " font.
In subway communication pair twist shielded type cable described in the utility model, two insulated wire cores of twisted pair wire in-core described in each are along the arranged radially of described cable inner core.
In subway communication pair twist shielded type cable described in the utility model, the stranded gap of many described pair twist cores has packed layer, and described packed layer adopts flexible polyester fiber rope or the stranded formation of flexible reinforcement.
In subway communication pair twist shielded type cable described in the utility model, the thickness of described restrictive coating is 0.8mm ~ 1.5mm.
In subway communication pair twist shielded type cable described in the utility model, described restrictive coating and described insulating barrier are butyronitrile polyvinyl chloride composite bed.
The utility model also provides a kind of subway communication pair twist shielded type cable, comprise cable inner core, and the screen be coated on successively from inside to outside outside described cable inner core and restrictive coating, described screen forms by netted copper strips is wrapped, and the thickness of described screen is more than or equal to 0.05mm; Described cable inner core forms by three pair twist cores are stranded, and three described pair twist cores are uniformly distributed in " bifurcation " font, and the stranded gap of three described pair twist cores has packed layer, is formed rounded configurations to make described cable inner core;
Described pair twist core forms by two insulated wire cores are stranded, and described insulated wire cores comprises conductor and is coated on the insulating barrier outside described conductor, and described conductor is twisted by many copper wire bundles and forms, and the filament diameter of described copper wire is less than 0.18mm.
In sum, implement subway communication pair twist shielded type cable of the present utility model, have following beneficial effect: first, conductor is twisted by many soft copper wire bundles and forms, with increase cable flexibility or can curvature.The conductor flexibility stranded by many single line copper wires be good, can curvature large, when conductor bends, inside and outside conductor center line, two parts can motion compensation mutually, can not cause the plastic deformation of conductor, the flexibility of conductor and stability are improved greatly time bending.Secondly, cable inner core forms by three pair twist cores are stranded, and three pair twist cores are uniformly distributed in " bifurcation " font.And add flexible high-grade polyester fiber rope or flexible reinforcement in stranded space between pair twist core; can not only play a protective role to pair twist core by adding flexible reinforcement in stranded space; avoid pair twist core damaged and destroy the insulating properties of cable, and ductility and the bend resistance ability of whole cable can be strengthened.Finally; screen forms by netted copper strips is wrapped; be not damaged better to protect cable inner core; improve the useful life of subway communication pair twist shielded type cable; under guaranteeing that wrapped netted copper strips and braid shielded have the prerequisite of identical anti-tampering performance, because around-packing technology is synchronously carried out when twisted synthesizing cable, therefore compared to braid shielded; wrapped netted copper strips substantially increases operation progress, and reduces because of problems such as easily puncturing of causing of knitted burr.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the structural representation of the subway communication pair twist shielded type cable that one of the utility model preferred embodiment provides.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, the subway communication pair twist shielded type cable that the utility model preferred embodiment provides, this cable comprises cable inner core 3, and the screen 2 be coated on successively from inside to outside outside cable inner core 3 and restrictive coating 1.Wherein, screen 2 forms by netted copper strips is wrapped, and the thickness of screen 2 is more than or equal to 0.05mm.Cable inner core 3 forms by many pair twist cores 5 are stranded, and pair twist core 5 forms by two insulated wire cores 6 are stranded, and insulated wire cores 6 comprises conductor 7 and is coated on the insulating barrier 8 outside conductor 7, and conductor 7 is twisted by many copper wire bundles and forms, and the filament diameter of copper wire is less than 0.18mm.
In the present embodiment, conductor 7 forms by many soft copper wire bundle strands, with increase cable flexibility or can curvature.Conductor 7 flexibility stranded by many single line copper wires be good, can curvature large, when conductor 7 bends, inside and outside conductor 7 center line, two parts can motion compensation mutually, can not cause the plastic deformation of conductor 7, the flexibility of conductor 7 and stability are improved greatly time bending.
Further, in the present embodiment, copper wire soft described in each is annealing copper free wire, because annealing copper free wire is oxygen-free also not containing the fine copper of any deoxidier residue, therefore its electricapparatus performance is very excellent, and the monofilament elongates rate of copper free wire is more than 20%, monofilament elongates rate height illustrates that copper wire is soft, ductility strong, and bend resistance ability is strong.
Be different from blister copper silk of the prior art, the utility model use the filament diameter of copper wire to be all less than 0.2mm; Preferably, the filament diameter of copper wire is less than 0.18mm; In the present embodiment, the filament diameter of copper wire is 0.15mm.Because in the utility model, the filament diameter of copper wire is little, the quantity of quantity required blister copper silk used in prior art of copper wire needed for the conductor 7 making to make same external diameter, like this can external force suffered by effective dispersed cable, therefore, the electric conductivity of the utility model conductor 7 is strong, is not easy fracture, has extremely strong bend resistance ability without Hydrogen Brittleness Phenomena, through exceeding millions of time come and go bending motion after can not rupture, and then guarantee the physics of cable and electric property unaffected.
In addition, the stranded mode bundle of armour is adopted to be stranding into conductor 7 on above-mentioned many soft copper wires, to guarantee that the conductor 7 obtained has stronger intensity and bending ability, time stranded, the bundle strand twisting pitch of copper wire is less than or equal to 10 times of the stranded external diameter of copper wire, and the bundle of many copper wires strand direction of lay is left-hand.
Preferably; can also in the many stranded spaces of copper wire the high-grade polyester fiber silk of filling flexible; by adding flexible high-grade polyester fiber silk in stranded space, can not only play a protective role to copper wire, and ductility and the bend resistance ability of whole cable can be strengthened.
As described in Figure 1, insulating barrier 8 is evenly coated on outside conductor 7, and the present embodiment adopts plsitive mold at conductor 7 outer cladding insulating barrier 8, thus obtains the insulated wire cores 6 forming pair twist core 5, and this insulating barrier 8 is made up of butyronitrile polyvinyl chloride composite materials.
In the present embodiment, insulating barrier 8 is butyronitrile polyvinyl chloride composite materials, to meet the withstand voltage by force of cable and strong anti-wear performance.Wherein, butyronitrile polyvinyl chloride composite materials is made up of the raw material of following parts by weight: acrylonitrile-butadiene rubber 30 ~ 50 parts, polyvinyl chloride 70 ~ 110 parts, 3 ~ 8 parts, zinc oxide, anti-aging agent RD 1 ~ 2 part, stearic acid 3 ~ 5 parts, 20 ~ 45 parts, potter's clay and o-phthalic acid dibutyl ester 20 ~ 45 parts.Wherein, anti-aging agent RD is 2,2,4-trimethyl-1,2-dihyaroquinoline condensate or 2,2,4-trimethyl-1,2-dihydroquinoline polymer, and potter's clay is boccaro.
Be different from the polyvinyl chloride insulation layer of traditional cable; this butyronitrile polyvinyl chloride greatly improves the ageing resistance of cable; and improve hot strength; enhance the overall flexibility of cable; make insulating barrier 8 better can protect copper wire; avoid because insulating barrier 8 weares and teares and destroy the insulating properties of cable, causing potential safety hazard.
Preferably; the thickness of the application's insulating barrier 8 is 0.2mm ~ 0.7mm; the insulating barrier 8 made due to butyronitrile polyvinyl chloride has stronger pliability and resistance to wear; make the thickness of traditional polyvinyl chloride insulation layer need reach more than a times of insulating barrier 8 thickness described in the application, just can have the protected effect identical with the application's insulating barrier 8.In the present embodiment, the thickness of insulating barrier 8 is 0.5mm.
Preferably, the external diameter of this insulated wire cores 6 is less than 1.8mm, and in the present embodiment, the external diameter of insulated wire cores 6 is 1.72mm.
As shown in Figure 1, pair twist core 5 forms by two insulated wire cores 6 are stranded, concrete, two insulated wire cores 6 adopt the twisting mode of armour formula stranded, and stranded direction by skin be inwardly followed successively by " S "-" Z "-" S " etc. to, the twisting pitch of pair twist core 5 is less than or equal to 15 times of the stranded external diameter of pair twist core 5.
As shown in Figure 1, cable inner core 3 forms by many pair twist cores 5 are stranded, and in the present embodiment, pair twist core 5 comprises three, and three pair twist cores 5 are uniformly distributed in " bifurcation " font.And two insulated wire cores 6 in each pair twist core 5 are along the arranged radially of cable inner core 3.
Preferably, flexible high-grade polyester fiber rope or flexible reinforcement (on figure non-label) can be added in the stranded space between many pair twist cores 5.This flexible reinforcement is that metal material that electric conductivity is low or nonmetallic materials are made; can not only play a protective role to pair twist core 5 by adding flexible reinforcement in stranded space; avoid pair twist core 5 damaged and destroy the insulating properties of cable, and ductility and the bend resistance ability of whole cable can be strengthened.
Further, by adding flexible high-grade polyester fiber rope or flexible reinforcement in stranded space, the requirement different according to cable can also carry out accommodation, cable inner core 3 is made to form rounded configurations, thus it is constant to maintain the overall structure of cable, this adaptive adjustment is simple and enhance adaptive capacity and the scope of application of cable greatly.
In the present embodiment, the quantity of pair twist core 5 is three, is added with flexible high-grade polyester fiber rope or flexible reinforcement in the stranded space of three pair twist cores 5, and makes cable inner core 3 form rounded configurations.Be understandable that, the present embodiment does not limit the concrete quantity of pair twist core 5, and it can be multiple; Preferably, the quantity of pair twist core 5 is three or five.
As shown in Figure 1, screen 2 is evenly coated on outside cable inner core 3, and screen 2 forms by netted copper strips is wrapped, better to protect cable inner core 3 not to be damaged, improves the useful life of subway communication pair twist shielded type cable.In the present embodiment, the thickness of netted copper strips is more than or equal to 0.05mm, and preferably, the thickness of screen 2 is 0.08mm.
Under guaranteeing that wrapped netted copper strips and braid shielded have the prerequisite of identical anti-tampering performance, because around-packing technology is synchronously carried out when twisted synthesizing cable, therefore compared to braid shielded, wrapped netted copper strips substantially increases operation progress, and reduce because of problems such as easily puncturing of causing of knitted burr.
As shown in Figure 1, restrictive coating 1 is evenly coated on outside screen 2, because screen 2 forms by netted copper strips is wrapped, restrictive coating 1 adopts the mode of extruding to be coated on screen 2, the thickness of restrictive coating 1 can be made even, and play the effect of fixed mask layer 2, and then ensure the mechanical performance of cable and the stable of electrical property.
In the present embodiment, restrictive coating 1 is made up of butyronitrile polyvinyl chloride composite materials, and the composition of butyronitrile polyvinyl chloride composite materials in restrictive coating 1 is identical with the composition of the butyronitrile polyvinyl chloride composite materials in insulating barrier 8.Preferably, in the present embodiment, the thickness of restrictive coating 1 is 0.8mm ~ 1.5mm.
This butyronitrile polyvinyl chloride composite materials is adopted to greatly improve the ageing resistance of cable; and improve hot strength; enhance the overall flexibility of cable; restrictive coating 1 is made can better to protect cable inner core 3; avoid because restrictive coating 1 weares and teares and destroy the insulating properties of drag chain cable, causing potential safety hazard.
Therefore, the restrictive coating 1 adopting this butyronitrile polyvinyl chloride composite materials to make, can make the mechanical performance of cable, anti-wear performance and flexility etc. reach optimum state, be more applicable for the place of bad environments.In addition, adopt this restrictive coating 1, cable can the conductor 7 of available protecting inside not be damaged after there is friction or mechanical shock, thus extends the useful life of cable and ensure that unit is transmitted electricity normally.Preferably, in the present embodiment, the thickness of restrictive coating 1 is 0.8mm ~ 1.5mm.
The application also provides a kind of subway communication pair twist shielded type cable, this cable comprises cable inner core 3, and the screen 2 be coated on successively from inside to outside outside cable inner core 3 and restrictive coating 1, screen 2 forms by netted copper strips is wrapped, and the thickness of screen 2 is more than or equal to 0.05mm.
Concrete, cable inner core 3 forms by three pair twist cores 5 are stranded, three pair twist cores 5 are uniformly distributed in " bifurcation " font, and the stranded gap of three pair twist cores 5 has packed layer 4, to make cable inner core 3 be formed rounded configurations, this packed layer 4 adopts flexible polyester fiber rope or the stranded formation of flexible reinforcement.
Further, pair twist core 5 forms by two insulated wire cores 6 are stranded, and insulated wire cores 6 comprises conductor 7 and is coated on the insulating barrier 8 outside conductor 7, and conductor 7 is twisted by many copper wire bundles and forms, and the filament diameter of copper wire is less than 0.18mm.
Preferably, in the present embodiment, the external diameter of insulation core wire 6 is 1.72mm, and the filament diameter of copper wire is 0.15mm.
In sum, implement subway communication pair twist shielded type cable of the present utility model, there is following beneficial effect:
(1) conductor is twisted by many soft copper wire bundles and forms, with increase cable flexibility or can curvature.The conductor flexibility stranded by many single line copper wires be good, can curvature large, when conductor bends, inside and outside conductor center line, two parts can motion compensation mutually, can not cause the plastic deformation of conductor, the flexibility of conductor and stability are improved greatly time bending.
(2) insulating barrier and restrictive coating use modified polyvinyl chloride to make, and can extend the useful life of drag chain cable.
(3) cable inner core forms by three pair twist cores are stranded, and three pair twist cores are uniformly distributed in " bifurcation " font.And add flexible high-grade polyester fiber rope or flexible reinforcement in stranded space between pair twist core; can not only play a protective role to pair twist core by adding flexible reinforcement in stranded space; avoid pair twist core damaged and destroy the insulating properties of cable, and ductility and the bend resistance ability of whole cable can be strengthened.
(4) screen forms by netted copper strips is wrapped; be not damaged better to protect cable inner core; improve the useful life of subway communication pair twist shielded type cable; under guaranteeing that wrapped netted copper strips and braid shielded have the prerequisite of identical anti-tampering performance; because around-packing technology is synchronously carried out when twisted synthesizing cable; therefore compared to braid shielded, wrapped netted copper strips substantially increases operation progress, and reduce because of problems such as easily puncturing of causing of knitted burr.
Although the utility model is described by specific embodiment, it will be appreciated by those skilled in the art that, when not departing from the utility model scope, various conversion can also be carried out and be equal to substituting to the utility model.In addition, for particular condition or material, various amendment can be made to the utility model, and not depart from scope of the present utility model.Therefore, the utility model is not limited to disclosed specific embodiment, and should comprise the whole execution modes fallen in the utility model right.
Claims (9)
1. a subway communication pair twist shielded type cable, it is characterized in that, comprise cable inner core (3), and be coated on described cable inner core (3) screen outward (2) and restrictive coating (1) from inside to outside successively, described screen (2) forms by netted copper strips is wrapped, and the thickness of described screen (2) is more than or equal to 0.05mm; Described cable inner core (3) forms by many pair twist cores (5) are stranded, described pair twist core (5) forms by two insulated wire cores (6) are stranded, described insulated wire cores (6) comprises conductor (7) and is coated on described conductor (7) insulating barrier outward (8), described conductor (7) is twisted by many copper wire bundles and forms, and the filament diameter of described copper wire is less than 0.18mm.
2. subway communication pair twist shielded type cable according to claim 1, it is characterized in that, the filament diameter of described copper wire is less than 0.16mm, and the monofilament elongates rate of described copper wire is greater than 20%.
3. subway communication pair twist shielded type cable according to claim 1, it is characterized in that, the external diameter of described insulated wire cores (6) is less than 1.8mm.
4. subway communication pair twist shielded type cable according to claim 1, is characterized in that, described pair twist core (5) comprises three, and three described pair twist cores (5) are uniformly distributed in " bifurcation " font.
5. subway communication pair twist shielded type cable according to claim 1, is characterized in that, two insulated wire cores (6) in pair twist core (5) described in each are along the arranged radially of described cable inner core (3).
6. subway communication pair twist shielded type cable according to claim 1, it is characterized in that, the stranded gap of many described pair twist cores (5) has packed layer (4), and described packed layer (4) adopts flexible polyester fiber rope or the stranded formation of flexible reinforcement.
7. subway communication pair twist shielded type cable according to claim 1, is characterized in that, the thickness of described restrictive coating (1) is 0.8mm ~ 1.5mm.
8. subway communication pair twist shielded type cable according to claim 1, is characterized in that, described restrictive coating (1) and described insulating barrier (8) are butyronitrile polyvinyl chloride composite bed.
9. a subway communication pair twist shielded type cable, it is characterized in that, comprise cable inner core (3), and be coated on described cable inner core (3) screen outward (2) and restrictive coating (1) from inside to outside successively, described screen (2) forms by netted copper strips is wrapped, and the thickness of described screen (2) is more than or equal to 0.05mm; Described cable inner core (3) forms by three pair twist cores (5) are stranded, three described pair twist cores (5) are uniformly distributed in " bifurcation " font, and the stranded gap of three described pair twist cores (5) has packed layer (4), formed rounded configurations to make described cable inner core (3);
Described pair twist core (5) forms by two insulated wire cores (6) are stranded, described insulated wire cores (6) comprises conductor (7) and is coated on described conductor (7) insulating barrier outward (8), described conductor (7) is twisted by many copper wire bundles and forms, and the filament diameter of described copper wire is less than 0.18mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420870429.1U CN204440924U (en) | 2014-12-31 | 2014-12-31 | Subway communication pair twist shielded type cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420870429.1U CN204440924U (en) | 2014-12-31 | 2014-12-31 | Subway communication pair twist shielded type cable |
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| CN204440924U true CN204440924U (en) | 2015-07-01 |
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| CN201420870429.1U Active CN204440924U (en) | 2014-12-31 | 2014-12-31 | Subway communication pair twist shielded type cable |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105185446A (en) * | 2015-10-19 | 2015-12-23 | 无锡鑫宏业特塑线缆有限公司 | Bending-resistant anti-torsion cable |
| CN105810351A (en) * | 2014-12-31 | 2016-07-27 | 安徽联嘉祥特种电缆有限公司 | Metro low frequency communication signal transmission cable and manufacturing method thereof |
-
2014
- 2014-12-31 CN CN201420870429.1U patent/CN204440924U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105810351A (en) * | 2014-12-31 | 2016-07-27 | 安徽联嘉祥特种电缆有限公司 | Metro low frequency communication signal transmission cable and manufacturing method thereof |
| CN105185446A (en) * | 2015-10-19 | 2015-12-23 | 无锡鑫宏业特塑线缆有限公司 | Bending-resistant anti-torsion cable |
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