CN102110496A - Anti-cracking railway digital signal cable - Google Patents
Anti-cracking railway digital signal cable Download PDFInfo
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- CN102110496A CN102110496A CN2009102151202A CN200910215120A CN102110496A CN 102110496 A CN102110496 A CN 102110496A CN 2009102151202 A CN2009102151202 A CN 2009102151202A CN 200910215120 A CN200910215120 A CN 200910215120A CN 102110496 A CN102110496 A CN 102110496A
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- density polyethylene
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Abstract
The invention relates to an anti-cracking railway digital signal cable which comprises a plurality of cable units and a jacket wrapped at the periphery of the cable units, wherein the jacket sequentially comprises an alloy aluminum protective layer which is longitudinally wrapped and welded at the periphery of the cable units, a high-density polyethylene inner protective layer extruded outside the alloy aluminum protective layer, a steel belt wrapped at the periphery of the high-density polyethylene inner protective layer, a diphenyl ether weftless belt wrapped at the periphery of the steel belt and a high-density polyethylene outer protective layer extruded outside the weftless belt. By using the high-density polyethylene materials as the inner protective layer and the outer protective layer of the cable, the railway digital signal cable has the characteristics of environmental stress crack resistance, low temperature resistance, wear resistance and ultraviolet irradiation resistance, and can be used in all regions. Simultaneously, the diphenyl ether weftless belt is used outside the steel belt, thereby preventing the steel belt from damaging the outer protective layer, and further prolonging the service life of the cable.
Description
Technical field
The present invention relates to a kind of railway digital signal cable.
Background technology
Existing railway digital signal cable, it is made up of cable core and the sheath that is coated on the cable core periphery, and sheath is mainly the outer jacket that sheath that the LLDPE material makes, armour that the hot dip galvanized steel strip forms and LLDPE are made from the inside to the outside usually.The cable of this kind structure can use in China central plain area and southern area, but in China northeast, Xinjiang, northwest, areas such as Qinghai, Tibet, the Inner Mongol, the cable cover(ing) cracking phenomena often takes place in this structural cable, thereby influence the transmission and the useful life of cable, and have certain potential safety hazard.
Summary of the invention
The purpose of this invention is to provide a kind of railway digital signal cable that can not ftracture long-term use of cold or tundra.
In order to reach the purpose of foregoing invention, technical scheme of the present invention is: a kind of cracking resistant type railway digital signal cable, comprise a plurality of line groups unit, be coated on the sheath of described a plurality of line groups unit periphery, described sheath comprises that successively vertical bag is welded on the alloy aluminum sheath of a plurality of line groups unit periphery, is extruded in alloy aluminum sheath outer high density polyethylene (HDPE) sheath, wrapped steel band in high density polyethylene (HDPE) sheath periphery, wrapped diphenyl ether in the steel band periphery and does not have the latitude band, be extruded in the high density polyethylene (HDPE) outer jacket outside the no latitude band.
Further, described steel band is the zinc-plated steel band of soft low-carbon (LC).
Described a plurality of line group unit periphery and be positioned at described alloy aluminum sheath inboard and also be coated with the cable core band.
Because the utilization of technique scheme, the present invention has following technological merit: the present invention makes the sheath and the outer jacket of cable by adopting high-density polyethylene material, make railway digital signal cable have environmental stress cracking resistance, has lower temperature resistance, resistance to wear and ultraviolet radiation resisting performance characteristics can be used at all regions.Simultaneously adopt diphenyl ether not have the latitude band outside steel band, useful life of cable has further been strengthened in the damage of avoiding steel band that outer jacket is caused.
Description of drawings
Accompanying drawing 1 is the anti-cracking type railway digital signal cable viewgraph of cross-section of the present invention;
Wherein: 1, line group unit; 11, single line; 12, polyester yarn; 2, sheath; 21, alloy aluminum sheath; 22, high density polyethylene (HDPE) sheath; 23, steel band; 24, diphenyl ether does not have the latitude band; 25, high density polyethylene (HDPE) outer jacket; 26, cable core band;
Embodiment
Below in conjunction with accompanying drawing railway digital signal cable embodiment of the present invention is elaborated:
Cable as shown in Figure 1, it is mainly used on the rail track, mainly comprise cable core, be coated on the sheath 2 of cable core periphery, wherein cable core comprises a plurality of line groups unit 1, each line group unit 1 is mutually stranded by four single lines 11 again, it is outer around pricking polyester yarn 12, in the present embodiment, have four line group unit 1 in the cable, each line group unit 1 is interior by four single lines, 11 mutually stranded forming, four quad unit 1 are wrapped by non-hygroscopic insulating material band 26, sheath 2 is positioned at band 26 peripheries, in the present embodiment, sheath 2 comprises one deck alloy aluminum sheath 21 that argon arc welding system forms from the inside to the outside successively, alibate 2 outer one deck anticorrosive property PURs that apply, extrude the sheath 22 that one deck black high density polyethylene (HDPE) forms again, sheath 22 external series gaps are surrounded with the zinc-plated steel band 23 of two-layer soft low-carbon (LC), and steel band 23 outer wrapped once soft diphenyl ether do not have latitude band 24, the no latitude band 24 outer outer jackets 25 that extrude the formation of one deck black high density polyethylene (HDPE) again.
The anti-cracking type railway digital signal cable of present embodiment, outer jacket all adopts high-density polyethylene material to make in it, the main component of sheath is a high density polyethylene (HDPE), and add the silica modifier a spot of low density polyethylene (LDPE) and carbon black are arranged and be used to improve its processing characteristics, also contain a spot of antioxidant in addition.The sheath that above-mentioned material forms has hardness height, resistance to wear is good, physical and mechanical properties is good advantage, also has advantages such as excellent toughness, resistance to bend(ing), low temperature resistant embrittlement performance simultaneously.Concrete technical performance sees the following form 1:
The performance index of table 1 high density polyethylene (HDPE) protective cover material
| Sequence number | Project | Index | Remarks |
| 1 | Melt flow rate (MFR) g/min | ≤0.45 | |
| 2 | Density g/cm 3 | 0.948～0.978 | |
| 3 | Hot strength Mpa | ≥20.0 | |
| 4 | Elongation at break % | ≥?650 | |
| 5 | Brittle temperature ℃ | ≤-76 | |
| 6 | Impact strength KJ/m 2 | ≥25 | |
| 7 | Shore hardness A | ≥60 | |
| 8 | Vicat softening point ℃ | ≥96 | |
| 9 | 100 ℃ of 168h hot strengths of air-oven heat ageing retention rate % | ≥85 | |
| 10 | 100 ℃ of 168h extension at breaks of air-oven heat ageing retention rate % | ≥85 |
In the present embodiment, steel band 23 adopts soft zinc-plated steel band, and this can make the cable good bending property of making, and decay resistance is stronger.Outside zinc-plated steel band 23, adopt one deck diphenyl ether not have latitude band 24 simultaneously, has high anti-intensity during these no latitude band 24 high temperature, and also have stable mechanical property when temperature sharply changes, and diphenyl ether do not have the latitude band and also have the low-temperature setting characteristic, but long term storage at room temperature.
The anti-crack railway digital signal cable of the present invention has processing ease, and characteristics easy to use are applicable to cold district or Frozen earth section, have very high promotional value.
Claims (3)
1. cracking resistant type railway digital signal cable, comprise a plurality of line groups unit (1), be coated on the sheath (2) of described a plurality of line groups unit (1) periphery, it is characterized in that: described sheath (2) comprises that successively vertical bag is welded on the alloy aluminum sheath (21) of a plurality of line groups unit (1) periphery, be extruded in the outer high density polyethylene (HDPE) sheath (22) of alloy aluminum sheath (21), wrapped steel band (23) in high density polyethylene (HDPE) sheath (22) periphery, wrapped diphenyl ether in steel band (23) periphery does not have latitude band (24), be extruded in the outer high density polyethylene (HDPE) outer jacket (25) of no latitude band (24).
2. cracking resistant type railway digital signal cable according to claim 1 is characterized in that: described steel band (23) is the zinc-plated steel band of soft low-carbon (LC).
3. cracking resistant type railway digital signal cable according to claim 1 and 2 is characterized in that: described a plurality of line groups unit (1) periphery and be positioned at described alloy aluminum sheath (21) inboard and also be coated with cable core band (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102151202A CN102110496A (en) | 2009-12-24 | 2009-12-24 | Anti-cracking railway digital signal cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102151202A CN102110496A (en) | 2009-12-24 | 2009-12-24 | Anti-cracking railway digital signal cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102110496A true CN102110496A (en) | 2011-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102151202A Pending CN102110496A (en) | 2009-12-24 | 2009-12-24 | Anti-cracking railway digital signal cable |
Country Status (1)
| Country | Link |
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| CN (1) | CN102110496A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103500613A (en) * | 2013-09-10 | 2014-01-08 | 江苏通鼎光电科技有限公司 | Signal cable |
| CN103943188A (en) * | 2014-03-18 | 2014-07-23 | 安徽慧艺线缆集团有限公司 | Special double-armor towline cable |
| CN104599780A (en) * | 2015-02-06 | 2015-05-06 | 江苏通鼎光电科技有限公司 | Railway digital signal cable |
| CN108597667A (en) * | 2018-04-10 | 2018-09-28 | 浙江海宁和金电子科技有限公司 | A kind of electric wire cable structure of embedded wearing layer |
-
2009
- 2009-12-24 CN CN2009102151202A patent/CN102110496A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103500613A (en) * | 2013-09-10 | 2014-01-08 | 江苏通鼎光电科技有限公司 | Signal cable |
| CN103943188A (en) * | 2014-03-18 | 2014-07-23 | 安徽慧艺线缆集团有限公司 | Special double-armor towline cable |
| CN104599780A (en) * | 2015-02-06 | 2015-05-06 | 江苏通鼎光电科技有限公司 | Railway digital signal cable |
| CN108597667A (en) * | 2018-04-10 | 2018-09-28 | 浙江海宁和金电子科技有限公司 | A kind of electric wire cable structure of embedded wearing layer |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110629 |