CN103149654A - Skeleton-type cable - Google Patents
Skeleton-type cable Download PDFInfo
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- CN103149654A CN103149654A CN2013101106865A CN201310110686A CN103149654A CN 103149654 A CN103149654 A CN 103149654A CN 2013101106865 A CN2013101106865 A CN 2013101106865A CN 201310110686 A CN201310110686 A CN 201310110686A CN 103149654 A CN103149654 A CN 103149654A
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Abstract
The invention belongs to the technical field of cables and relates to a skeleton-type cable. The skeleton-type cable comprises a skeleton, a reinforcer and a jacket. The outer periphery of the skeleton is provided with inner skeleton grooves; cable cores are arranged in the inner skeleton grooves; and the inner skeleton grooves are distributed on the outer periphery of the skeleton in a one-way spiral manner. The skeleton-type cable is characterized in that the outer edge of the jacket is provided with outer skeleton grooves which are concave towards the center of the jacket and are distributed in a spiral manner; the positions of the inner and outer skeleton grooves correspond to each other; the bottom surfaces of the inner skeleton grooves are helical surfaces; the bottom surfaces of the outer skeleton grooves are helical surfaces; the bottom surfaces of the inner skeleton grooves and the bottom surfaces of the outer skeleton grooves at the corresponding positions are parallel to each other; and on any one cross section of the cable and on the projection of the connecting line of both end points of the bottom line of any one inner skeleton groove, the middle point of the connecting line of the bottom lines of the outer skeleton grooves at the corresponding position, the center of the reinforcer and the middle point of the connecting line of both end points of the bottom line of the inner skeleton groove are positioned on the same straight line. The skeleton-type cable has the following beneficial effects of simplicity for manufacturing, easiness for batch production, convenience for construction and more effective protection on the cable.
Description
The application is that denomination of invention is: a kind of skeleton type cable, number of patent application are: 201210103170.3, the applying date is: the dividing an application of the application for a patent for invention on April 7th, 2012.
Technical field
The invention belongs to technical field of cables, especially relate to the skeleton type cable that has skeleton grooves or skeleton bar on a kind of sheath.
Background technology
Skeleton type cable is widely used, optical cable aspect particularly, the communication industry standard YD/T981.1-2009 of People's Republic of China (PRC) Access Network optical fibre band optical cable part 1: skeleton, just stipulated good multiple optical cable with skeleton, slotted core cable normally is made of skeleton, central reinforce member, band and moisture-proof layer, sheath, optical fiber or fibre ribbon, a plurality of skeleton grooves are arranged on skeleton, and optical fiber or fibre ribbon are placed in skeleton grooves, and skeleton grooves is one-way spiral or forward and reverse spiral.For skeleton cable, the substantially same slotted core cable of structure, what only place in skeleton grooves is communication or power lead.For the ease of identification, usually has the skeleton grooves mark line on skeleton.This skeleton type cable of the prior art has significant shortcoming: in the situation that optical cable is not opened the stripping sheath, very not easy to identify, and often need accurately to know the position of optical fiber or fibre ribbon or electric wire place groove in construction, only have in prior art could judge exactly after its incision, quite large for the injury of cable.
Summary of the invention
In order to address the above problem; the invention provides a kind of skeleton type cable; in the situation that do not need the lateral dissection optical cable; just can accurately judge the position of skeleton grooves; can farthest protect cable in construction; not destroying does not need the skeleton grooves that cuts, and it is realized by the following technical solutions:
A kind of skeleton type cable, it includes skeleton 1, be positioned at the reinforcement 3 of skeleton central authorities, be positioned on the skeleton excircle and a plurality of inner frame groove 11 spaced apart from each other, be positioned at the inner frame groove cable core 2, be coated on the protective seam 4 on skeleton and be extruded in sheath 5 on protective seam; The inner frame groove is parallel to each other on the skeleton excircle and distributes and parallel with reinforcement; It is characterized in that: have the first adjacent and not connected groove 12 and the second groove 13 on inner frame; The first groove and the second groove are between two adjacent inner frame grooves; Have a plurality of outer skeleton grooves 51 to the sheath central concave in the outer of sheath, outer skeleton grooves is parallel to each other and distributes and parallel with reinforcement, and the position of outer skeleton grooves is corresponding with the position of inner frame groove; The outer of sheath has to the 3rd groove 52 of sheath central concave and the 4th groove 53, and the 3rd groove and the position of the first groove are that corresponding, the 4th groove is corresponding with the position of the second groove, and the 3rd groove and the 4th groove are outside adjacent two between skeleton grooves; The bottom surface of described inner frame groove is the plane, and the bottom surface of outer skeleton grooves is that the bottom surface of plane and the inner frame groove on correspondence position is parallel with the bottom surface of outer skeleton grooves; On any one xsect of described cable: the area of Area Ratio second groove of the first groove is large, the area of Area Ratio the 4th groove of the 3rd groove is large, and in the projection of the bottom surface of arbitrary inner frame groove, within the bottom surface of the outer skeleton grooves of correspondence position is positioned at the bottom surface of inner frame groove or the same with the bottom surface of inner frame groove large; Being centered close on same straight line of the mid point of the bottom line of the mid point of the bottom line of the outer skeleton grooves of correspondence position, inner frame groove, reinforcement.
In another embodiment of the present invention, a kind of skeleton type cable, it includes skeleton 1, be positioned at the reinforcement 3 of skeleton central authorities, be positioned on the skeleton excircle and a plurality of inner frame groove 11 spaced apart from each other, be positioned at the inner frame groove cable core 2, be coated on the protective seam 4 on skeleton and be extruded in sheath 5 on protective seam; The inner frame groove is parallel to each other on the skeleton excircle and distributes and parallel with reinforcement; It is characterized in that: have the first adjacent and not connected groove 12 and the second groove 13 on inner frame; The first groove and the second groove are between two adjacent inner frame grooves; Have a plurality of outer skeleton bar 51 that protrudes from the sheath outer rim in the outer of sheath, outer skeleton bar is parallel to each other and distributes and parallel with reinforcement, and the position of outer skeleton bar is corresponding with the position of inner frame groove; The outer of sheath has to the 3rd groove 52 of sheath central concave and the 4th groove 53, and the 3rd groove and the position of the first groove are that corresponding, the 4th groove is corresponding with the position of the second groove, and the 3rd groove and the 4th groove are outside adjacent two between the skeleton bar; The bottom surface of described inner frame groove is the plane; On any one xsect of described cable: the area of Area Ratio second groove of the first groove is large, the area of Area Ratio the 4th groove of the 3rd groove is large, and in the projection of the bottom surface of arbitrary inner frame groove, within the bottom surface of the outer skeleton bar of correspondence position is positioned at the bottom surface of inner frame groove or the same with the bottom surface of inner frame groove large; Being centered close on same straight line of the mid point of the mid point of the bottom line of the outer skeleton bar of correspondence position, the bottom line of inner frame groove, reinforcement.
In another embodiment of the present invention, a kind of skeleton type cable, it includes skeleton 1, be positioned at the reinforcement 3 of skeleton central authorities, be positioned on the skeleton excircle and a plurality of inner frame groove 11 spaced apart from each other, be positioned at the inner frame groove cable core 2, be coated on the protective seam 4 on skeleton and be extruded in sheath 5 on protective seam; The inner frame groove is one-way spiral and distributes on the skeleton excircle; It is characterized in that: have a plurality of outer skeleton grooves 51 to the sheath central concave in the outer of sheath, outer skeleton grooves is one-way spiral and distributes on the sheath excircle, and the position of outer skeleton grooves is corresponding with the position of inner frame groove; The bottom surface of described inner frame groove is helicoid, and the bottom surface of outer skeleton grooves is that the bottom surface of helicoid and the inner frame groove on correspondence position is parallel with the bottom surface of outer skeleton grooves; On any one xsect of described cable: in the projection of the line of the two-end-point of the bottom line of arbitrary inner frame groove, the mid point of the line of the two-end-point of the bottom line of the mid point of the line of the bottom line of the outer skeleton grooves of correspondence position, reinforcement center, inner frame groove is located along the same line.
Any one skeleton type cable described above is characterized in that described cable core is insulated conductor or fibre ribbon or optical fiber.
Further, any one skeleton type cable described above is characterized in that described fibre ribbon is made of optical fiber 21 and clad.
Any one skeleton type cable described above, the material that it is characterized in that described skeleton are Low Density Polyethylene or medium density polyethylene or high density polyethylene or linear low density polyethylene.
Any one skeleton type cable described above is characterized in that described reinforcement is single metal wire or many stranded tinsels.
Any one skeleton type cable described above is characterized in that described reinforcement is glass fiber reinforced plastics.
Any one skeleton type cable described above is characterized in that described protective seam is waterstop or compound aluminium strip or composite steel band.
Any one skeleton type cable described above is characterized in that described sheath is Low Density Polyethylene or medium density polyethylene or high density polyethylene or linear low density polyethylene or low-smoke non-halogen flame-retardant tygon or low smoke and low halogen tygon or Polyvinylchloride.
In the present invention, have outer skeleton bar on sheath, and its position is corresponding with the inner frame groove, and in the projection of the bottom surface of arbitrary inner frame groove, within the bottom surface of the outer skeleton bar of correspondence position is positioned at the bottom surface of inner frame groove or the same with the bottom surface of inner frame groove large; Being centered close on same straight line of the mid point of the mid point of the bottom line of the outer skeleton bar of correspondence position, the bottom line of inner frame groove, reinforcement; Have again third and fourth groove corresponding with first and second groove on the affix sheath; therefore can be in the situation that do not open the wire stripping cable; identify easily the cable core in each inner frame groove, comprise quantity, chromatogram of cable core etc., when the construction of another place; also can identify easily; like this, do not need whole cross section to cut cable open, only need to have cut into corresponding construction along outer skeleton bar is central; effectively protected cable, and reinforcement also is difficult for getting rusty when being metal.
It is also similar when certainly, outer skeleton bar is outer skeleton grooves.
The present invention has following main beneficial effect: makes in simple, easy batch production, construction and can cut easily needed inner frame groove open, can accurately judge the position of inner frame groove, and more effective to the protection of cable.
Description of drawings
Fig. 1 is the perspective view after a section of the invention process example 1 is opened stripping.
Fig. 2 is the part front view after Fig. 1 amplifies.
Fig. 3 is the perspective view after a section of the invention process example 2 is opened stripping.
Fig. 4 is the part front view after Fig. 3 amplifies.
Fig. 5 is the perspective view after a section of the invention process example 3 is opened stripping.
Fig. 6 is the part front view after Fig. 5 amplifies.
Fig. 7 is the right view of the invention process example 3.
Fig. 8 is the perspective view after a section of skeleton part of the invention process example 3 is opened stripping.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
Ask for an interview Fig. 1 to Fig. 2, a kind of skeleton type cable, it includes skeleton 1, be positioned at the reinforcement 3 of skeleton central authorities, be positioned on the skeleton excircle and a plurality of inner frame groove 11 spaced apart from each other, be positioned at the inner frame groove cable core 2, be coated on the protective seam 4 on skeleton and be extruded in sheath 5 on protective seam; The inner frame groove is parallel to each other on the skeleton excircle and distributes and parallel with reinforcement; It is characterized in that: have the first adjacent and not connected groove 12 and the second groove 13 on inner frame; The first groove and the second groove are between two adjacent inner frame grooves; Have a plurality of outer skeleton grooves 51 to the sheath central concave in the outer of sheath, outer skeleton grooves is parallel to each other and distributes and parallel with reinforcement, and the position of outer skeleton grooves is corresponding with the position of inner frame groove; The outer of sheath has to the 3rd groove 52 of sheath central concave and the 4th groove 53, and the 3rd groove and the position of the first groove are that corresponding, the 4th groove is corresponding with the position of the second groove, and the 3rd groove and the 4th groove are outside adjacent two between skeleton grooves; The bottom surface of described inner frame groove is the plane, and the bottom surface of outer skeleton grooves is that the bottom surface of plane and the inner frame groove on correspondence position is parallel with the bottom surface of outer skeleton grooves; On any one xsect of described cable: the area of Area Ratio second groove of the first groove is large, the area of Area Ratio the 4th groove of the 3rd groove is large, and in the projection of the bottom surface of arbitrary inner frame groove, within the bottom surface of the outer skeleton grooves of correspondence position is positioned at the bottom surface of inner frame groove or the same with the bottom surface of inner frame groove large; Being centered close on same straight line of the mid point of the bottom line of the mid point of the bottom line of the outer skeleton grooves of correspondence position, inner frame groove, reinforcement; Described cable core is fibre ribbon; Fibre ribbon is made of optical fiber 21 and clad.
Certainly, in this embodiment, described outer skeleton grooves and inner frame groove also can be forward and reverse Spiral distribution.
Ask for an interview Fig. 3 to Fig. 4, a kind of skeleton type cable, it includes skeleton 1, be positioned at the reinforcement 3 of skeleton central authorities, be positioned on the skeleton excircle and a plurality of inner frame groove 11 spaced apart from each other, be positioned at the inner frame groove cable core 2, be coated on the protective seam 4 on skeleton and be extruded in sheath 5 on protective seam; The inner frame groove is parallel to each other on the skeleton excircle and distributes and parallel with reinforcement; It is characterized in that: have the first adjacent and not connected groove 12 and the second groove 13 on inner frame; The first groove and the second groove are between two adjacent inner frame grooves; Have a plurality of outer skeleton bar 51 that protrudes from the sheath outer rim in the outer of sheath, outer skeleton bar is parallel to each other and distributes and parallel with reinforcement, and the position of outer skeleton bar is corresponding with the position of inner frame groove; The outer of sheath has to the 3rd groove 52 of sheath central concave and the 4th groove 53, and the 3rd groove and the position of the first groove are that corresponding, the 4th groove is corresponding with the position of the second groove, and the 3rd groove and the 4th groove are outside adjacent two between the skeleton bar; The bottom surface of described inner frame groove is the plane; On any one xsect of described cable: the area of Area Ratio second groove of the first groove is large, the area of Area Ratio the 4th groove of the 3rd groove is large, and in the projection of the bottom surface of arbitrary inner frame groove, within the bottom surface of the outer skeleton bar of correspondence position is positioned at the bottom surface of inner frame groove or the same with the bottom surface of inner frame groove large; Being centered close on same straight line of the mid point of the mid point of the bottom line of the outer skeleton bar of correspondence position, the bottom line of inner frame groove, reinforcement; Described cable core is fibre ribbon; Fibre ribbon is made of optical fiber 21 and clad.
Certainly, in this embodiment, described outer skeleton bar and inner frame groove also can be forward and reverse Spiral distribution.
Ask for an interview Fig. 5 to Fig. 8, a kind of skeleton type cable, it includes skeleton 1, be positioned at the reinforcement 3 of skeleton central authorities, be positioned on the skeleton excircle and a plurality of inner frame groove 11 spaced apart from each other, be positioned at the inner frame groove cable core 2, be coated on the protective seam 4 on skeleton and be extruded in sheath 5 on protective seam; The inner frame groove is one-way spiral and distributes on the skeleton excircle; It is characterized in that: have a plurality of outer skeleton grooves 51 to the sheath central concave in the outer of sheath, outer skeleton grooves is one-way spiral and distributes on the sheath excircle, and the position of outer skeleton grooves is corresponding with the position of inner frame groove; The bottom surface of described inner frame groove is helicoid, and the bottom surface of outer skeleton grooves is that the bottom surface of helicoid and the inner frame groove on correspondence position is parallel with the bottom surface of outer skeleton grooves; On any one xsect of described cable: in the projection of the line of the two-end-point of the bottom line of arbitrary inner frame groove, the mid point of the line of the two-end-point of the bottom line of the mid point of the line of the bottom line of the outer skeleton grooves of correspondence position, reinforcement center, inner frame groove is located along the same line.
Certainly, in this embodiment, described outer skeleton grooves and inner frame groove also can be forward and reverse Spiral distribution.
In similar embodiment 2, in this embodiment, described outer skeleton grooves also can be outer skeleton bar.
Any one skeleton type cable described above is characterized in that described cable core is insulated conductor or fibre ribbon or optical fiber.
Further, any one skeleton type cable described above is characterized in that described fibre ribbon is made of optical fiber 21 and clad.
Any one skeleton type cable described above, the material that it is characterized in that described skeleton are Low Density Polyethylene or medium density polyethylene or high density polyethylene or linear low density polyethylene.
Any one skeleton type cable described above is characterized in that described reinforcement is single metal wire or many stranded tinsels.
Any one skeleton type cable described above is characterized in that described reinforcement is glass fiber reinforced plastics.
Any one skeleton type cable described above is characterized in that described protective seam is waterstop or compound aluminium strip or composite steel band.
Any one skeleton type cable described above is characterized in that described sheath is Low Density Polyethylene or medium density polyethylene or high density polyethylene or linear low density polyethylene or low-smoke non-halogen flame-retardant tygon or low smoke and low halogen tygon or Polyvinylchloride.
In the present invention, have outer skeleton bar on sheath, and its position is corresponding with the inner frame groove, and in the projection of the bottom surface of arbitrary inner frame groove, within the bottom surface of the outer skeleton bar of correspondence position is positioned at the bottom surface of inner frame groove or the same with the bottom surface of inner frame groove large; Being centered close on same straight line of the mid point of the mid point of the bottom line of the outer skeleton bar of correspondence position, the bottom line of inner frame groove, reinforcement; Have again third and fourth groove corresponding with first and second groove on the affix sheath; therefore can be in the situation that do not open the wire stripping cable; identify easily the cable core in each inner frame groove, comprise quantity, chromatogram of cable core etc., when the construction of another place; also can identify easily; like this, do not need whole cross section to cut cable open, only need to have cut into corresponding construction along outer skeleton bar is central; effectively protected cable, and reinforcement also is difficult for getting rusty when being metal.
It is also similar when certainly, outer skeleton bar is outer skeleton grooves.
The present invention has following main beneficial effect: makes in simple, easy batch production, construction and can cut easily needed inner frame groove open, can accurately judge the position of inner frame groove, and more effective to the protection of cable.
The present invention is not limited to above-mentioned preferred forms, should be appreciated that design of the present invention can be by other various forms enforcement utilizations, and they drop in protection scope of the present invention equally.
Claims (8)
1. skeleton type cable, it includes skeleton, be positioned at the reinforcement of skeleton central authorities, be positioned on the skeleton excircle and a plurality of inner frame groove spaced apart from each other, be positioned at the inner frame groove cable core, be coated on the protective seam on skeleton and be extruded in sheath on protective seam; The inner frame groove is one-way spiral and distributes on the skeleton excircle; It is characterized in that: have a plurality of outer skeleton grooves to the sheath central concave in the outer of sheath, outer skeleton grooves is one-way spiral and distributes on the sheath excircle, and the position of outer skeleton grooves is corresponding with the position of inner frame groove; The bottom surface of described inner frame groove is helicoid, and the bottom surface of outer skeleton grooves is that the bottom surface of helicoid and the inner frame groove on correspondence position is parallel with the bottom surface of outer skeleton grooves; On any one xsect of described cable: in the projection of the line of the two-end-point of the bottom line of arbitrary inner frame groove, the mid point of the line of the two-end-point of the bottom line of the mid point of the line of the bottom line of the outer skeleton grooves of correspondence position, reinforcement center, inner frame groove is located along the same line.
2. skeleton type cable according to claim 1, is characterized in that described cable core is insulated conductor or fibre ribbon or optical fiber.
3. skeleton type cable according to claim 1 is characterized in that described fibre ribbon is made of optical fiber and the clad that envelopes optical fiber.
4. skeleton type cable according to claim 1, the material that it is characterized in that described skeleton is Low Density Polyethylene or medium density polyethylene or high density polyethylene.
5. skeleton type cable according to claim 1, is characterized in that described reinforcement is single metal wire or many stranded tinsels.
6. skeleton type cable according to claim 1, is characterized in that described reinforcement is glass fiber reinforced plastics.
7. skeleton type cable according to claim 1, is characterized in that described protective seam is waterstop or compound aluminium strip or composite steel band.
8. skeleton type cable according to claim 1, is characterized in that described sheath is Low Density Polyethylene or medium density polyethylene or high density polyethylene or low-smoke non-halogen flame-retardant tygon or low smoke and low halogen tygon or Polyvinylchloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310110686.5A CN103149654B (en) | 2012-04-07 | 2012-04-07 | Skeleton-type cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310110686.5A CN103149654B (en) | 2012-04-07 | 2012-04-07 | Skeleton-type cable |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210103170 Division CN102590968B (en) | 2012-04-07 | 2012-04-07 | Skeleton type cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103149654A true CN103149654A (en) | 2013-06-12 |
| CN103149654B CN103149654B (en) | 2014-08-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310110686.5A Expired - Fee Related CN103149654B (en) | 2012-04-07 | 2012-04-07 | Skeleton-type cable |
Country Status (1)
| Country | Link |
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| CN (1) | CN103149654B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104078139A (en) * | 2014-07-21 | 2014-10-01 | 蔡洪祥 | Microgroove cable |
| CN104730667A (en) * | 2015-04-23 | 2015-06-24 | 龚利芬 | Skeleton type optical cable and manufacturing method thereof |
| CN104793305A (en) * | 2015-04-23 | 2015-07-22 | 龚利芬 | Central loose tube optical cable and method for manufacturing same |
| CN105676382A (en) * | 2014-06-26 | 2016-06-15 | 灏圭孩 | Method for manufacturing photoelectric composite cable with compact structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4381140A (en) * | 1979-10-08 | 1983-04-26 | U.S. Philips Corporation | Optical fiber cable |
| CN101806945A (en) * | 2010-05-08 | 2010-08-18 | 蒋菊生 | Easy-to-strip skeleton type optical cable |
| CN101943775A (en) * | 2009-07-03 | 2011-01-12 | 华为技术有限公司 | Cable and cable system |
-
2012
- 2012-04-07 CN CN201310110686.5A patent/CN103149654B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4381140A (en) * | 1979-10-08 | 1983-04-26 | U.S. Philips Corporation | Optical fiber cable |
| CN101943775A (en) * | 2009-07-03 | 2011-01-12 | 华为技术有限公司 | Cable and cable system |
| CN101806945A (en) * | 2010-05-08 | 2010-08-18 | 蒋菊生 | Easy-to-strip skeleton type optical cable |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105676382A (en) * | 2014-06-26 | 2016-06-15 | 灏圭孩 | Method for manufacturing photoelectric composite cable with compact structure |
| CN105676382B (en) * | 2014-06-26 | 2018-11-16 | 山东特发光源光通信有限公司 | A method of manufacturing compact-sized optoelectrical cable |
| CN104078139A (en) * | 2014-07-21 | 2014-10-01 | 蔡洪祥 | Microgroove cable |
| CN104078139B (en) * | 2014-07-21 | 2016-09-21 | 国网山东省电力公司菏泽供电公司 | A kind of microflute cable |
| CN104730667A (en) * | 2015-04-23 | 2015-06-24 | 龚利芬 | Skeleton type optical cable and manufacturing method thereof |
| CN104793305A (en) * | 2015-04-23 | 2015-07-22 | 龚利芬 | Central loose tube optical cable and method for manufacturing same |
| CN106950669A (en) * | 2015-04-23 | 2017-07-14 | 龚利芬 | Central-beam tube type fiber optic cable and preparation method |
| CN107357013A (en) * | 2015-04-23 | 2017-11-17 | 苏州专创光电科技有限公司 | A kind of slotted core cable and preparation method |
| CN104730667B (en) * | 2015-04-23 | 2017-12-01 | 浙江江山博奥电气有限公司 | Slotted core cable and preparation method |
| CN107462959A (en) * | 2015-04-23 | 2017-12-12 | 苏州专创光电科技有限公司 | A kind of skeleton photoelectric mixed cable |
| CN104793305B (en) * | 2015-04-23 | 2018-01-30 | 国网江西省电力公司高安市供电分公司 | Central-beam tube type fiber optic cable and preparation method |
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| CN103149654B (en) | 2014-08-27 |
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