CN106772867A - A kind of cable or optical cable with multiple color identification strip - Google Patents
A kind of cable or optical cable with multiple color identification strip Download PDFInfo
- Publication number
- CN106772867A CN106772867A CN201710082154.3A CN201710082154A CN106772867A CN 106772867 A CN106772867 A CN 106772867A CN 201710082154 A CN201710082154 A CN 201710082154A CN 106772867 A CN106772867 A CN 106772867A
- Authority
- CN
- China
- Prior art keywords
- cable
- parts
- engaging unit
- unit
- base band
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4479—Manufacturing methods of optical cables
- G02B6/4482—Code or colour marking
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
- G02B6/4432—Protective covering with fibre reinforcements
-
- 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
- H01B7/36—Insulated conductors or cables characterised by their form with distinguishing or length marks
- H01B7/365—Insulated conductors or cables characterised by their form with distinguishing or length marks being indicia imposed on the insulation or conductor
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
The invention belongs to cable and technical field of electric power communication; more particularly, to a kind of cable or optical cable with multiple color identification strip, with the protection pipe for enveloping cable or optical cable component wire, the composite band outside protection pipe, the first sheath outside composite band, the second sheath outside the first sheath, vitta；It is characterized in that the composite band has the base band of rectangular shape, and multiple isolated parts.In use state, the first engaging unit of isolated part is to stretch out the upper surface of base band body.The present invention solves colour bar cable vitta in the prior art and mutually melts the technical problem for causing the unclear, size of colored boundary inaccurate with base-material.The present invention has following main Advantageous Effects：Simple structure, be skillfully constructed, low cost, the color boundaries of colored cable that are easy to make, are made can clearly be debated, it is stronger not melt color, versatility between adjacent vitta.
Description
Technical field
The invention belongs to cable and technical field of electric power communication, more particularly, to a kind of electricity with multiple color identification strip
Cable or optical cable.
Background technology
Electric wire as national economy basic activity, be scale inferior to the pillars of the national economy after automobile industry
Industry, with the development of the communications industry, the usage amount of optical fiber cable is also increasing, and optical fiber cable industry is only electric wire row
One branch of industry.The composite band commonly used in electric wire mainly has：Polyester belt, mica tape, composite steel band, clad aluminum band, resistance
Water band, fiberglass reinforced plastics band etc.；These bands are in the prior art mainly as cladding and protective effect, cladding master
If in order that Stability Analysis of Structures, protecting mainly from mechanical shock, reducing and damage or prevent the external signal from internally influenceing
Or internal signal externally influences and prevents moisture penetration etc..
Color-bar cable of the prior art, typically using cable mould, polychrome head carries out injection or extrusion molding simultaneously,
Cable surface is formed a plurality of color-bar, be easy to recognize and bring technique effect attractive in appearance；However, this side of the prior art
Formula, because the material between adjacent vitta or vitta and normal sheath mutually melts, therefore can not accurately control the width of colour bar, often
Often there is defective products or cause the complaint of client, great economic expenditure and fame influence are brought to manufacturer, therefore, OK
Expect effective method always in the industry to solve, however, regrettably so far without effective solution.
The content of the invention
In order to solve the above problems, the purpose of the present invention is to disclose a kind of cable or light with multiple color identification strip
Cable, it is realized using following technical scheme.
A kind of cable or optical cable with multiple color identification strip, with reinforcer 9, positioned at reinforcer it is outer and by cable or
Three protection pipes 6 that optical cable component wire 7 is enveloped, the composite band outside protection pipe, the first sheath 4 outside composite band,
The second sheath 5 outside the first sheath；It is characterized in that the composite band have the base band 2 and multiple of rectangular shape every
From part 1, each isolated part 1 is engaged by the first engaging unit 11, the second engaging unit 12, the 3rd engaging unit the 13, the 4th
Unit 14, laminating unit 15 are constituted, and the first engaging unit is arcuate arc cylinder, and the second engaging unit is cuboid, the first card
Close the symmetrical axis and the second engaging unit of centre and first engaging unit of the unit above the second engaging unit
Symmetrical axis coincide, laminating unit 15 be located at the first engaging unit above centre and laminating unit left and right it is right
Axis is claimed to be coincided with the symmetrical axis of the first engaging unit, the 3rd engaging unit 13 is from the right side of the upper surface of laminating unit
Upwardly extend, the 4th engaging unit 14 is upwardly extended from the upper surface left side of laminating unit；3rd engaging unit, the 4th engaging are single
Vitta passage, a surface of the circular arc of the upper surface of the second engaging unit and unit of fitting are formed between unit, laminating unit three
Circular arc be concentric；Each isolated part is integral type structure；The base band is made up of base band body 20, in base band body
Portion has multiple horizontally disposed second grooves 22, and logical, each second groove part is not attached between the second adjacent groove
Be along the length direction insertion of base band body, the middle face center of each the second groove upwardly extended one it is second recessed with this
The first perpendicular groove 21 of groove, each first groove is through the upper surface of base band body, the following table of all second grooves
Face is generally aligned in the same plane in the upper surface of interior, all second grooves is generally aligned in the same plane, and the shape of each the second groove is length
Cube shape, the shape of each the first groove is cuboid；Second engaging unit 12 can be snapped in the second groove 22, and first
Engaging unit 11 can be snapped in the first groove 21, and the lower surface of engaging unit is the upper surface for being close to base band body；Base band
It is the appearance cable core chamber of empty cylindrical shape that the lower surface of body is formed internal, and protection pipe and reinforcer are located at and hold in cable core chamber；
There is vitta 8 in the vitta passage；First sheath is located between each first adjacent engaging unit, all first shields
The outer surface of layer, the vittate outer surface of institute are located on same circumference, and the second sheath is single by the 3rd engaging unit, the 4th engaging
Unit, the first sheath and vitta are enveloped；At least there are two kinds of vittas of different color in the cable or optical cable.
A kind of cable or optical cable with multiple color identification strip described above, it is characterised in that the base band body
Material is steel or iron or aluminium strip or fiberglass reinforced plastics.
A kind of cable or optical cable with multiple color identification strip described above, it is characterised in that the isolated part
Material is as the material of base band body.
A kind of cable or optical cable with multiple color identification strip described above, it is characterised in that the isolated part
Material is plastics.
The present invention has following main Advantageous Effects：Simple structure, it is skillfully constructed, low cost, is easy to make, is made
Colored cable color boundaries can clearly debate, not melt color, versatility between adjacent vitta stronger.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram after one section of stripping of the invention.
Fig. 2 is the cross-sectional structure schematic diagram that Fig. 1 amplifies.
Fig. 3 is one section of base band used in Fig. 1 of dimensional structure diagram.
Fig. 4 is the cross-sectional structure schematic diagram that Fig. 3 amplifies.
Fig. 5 is one section of isolated part used in Fig. 1 of dimensional structure diagram.
Fig. 6 is the cross-sectional structure schematic diagram that Fig. 5 amplifies.
Specific embodiment
To enable the public more accurately to understand and implement the application, embodiment is elaborated below in conjunction with the accompanying drawings,
The corresponding implication of drawing reference numeral in accompanying drawing is as follows：1-isolated part, the 11-the first engaging unit, the 12-the second engaging unit,
13-the three engaging unit, the 14-the four engaging unit, 15-laminating unit, 2-base band, 20-base band body, 21-the first
Groove, the 22-the second groove, the 4-the first sheath, the 5-the second sheath, 6-protection pipe, 7-cable or optical cable component wire, 8-color
Bar, 9-reinforcer.
See Fig. 1 to Fig. 6, a kind of cable or optical cable with multiple color identification strip, with reinforcer 9, positioned at reinforcement
Part it is outer and cable or optical cable component wire 7 are enveloped three protection pipes 6, the composite band outside protection pipe, positioned at composite band
The first outer sheath 4, the second sheath 5 outside the first sheath；It is characterized in that the composite band has rectangular shape
Base band 2 and multiple isolated part 1, each isolated part 1 engages by the first engaging unit 11, the second engaging unit the 12, the 3rd
Unit 13, the 4th engaging unit 14, laminating unit 15 are constituted, and the first engaging unit is arcuate arc cylinder, and the second engaging unit is
Cuboid, the first engaging unit is located at the symmetrical axis of the centre and the first engaging unit above the second engaging unit
Symmetrical axis with the second engaging unit coincides, and laminating unit 15 is located at centre and patch above the first engaging unit
The symmetrical axis for closing unit coincides with the symmetrical axis of the first engaging unit, and the 3rd engaging unit 13 is single from laminating
The upper surface right side of unit is upwardly extended, the 4th engaging unit 14 is upwardly extended from the upper surface left side of laminating unit；3rd engaging
Vitta passage, circular arc and the patch of the upper surface of the second engaging unit are formed between unit, the 4th engaging unit, laminating unit three
The circular arc for closing a surface of unit is concentric；Each isolated part is integral type structure；The base band is by base band body 20
Constitute, base band body interior has multiple horizontally disposed second grooves 22, be not attached between the second adjacent groove it is logical,
Each second groove part is that, along the length direction insertion of base band body, the middle face center of each the second groove has been upwardly extended
One first groove 21 perpendicular with second groove, each first groove is through the upper surface of base band body, owns
The lower surface of the second groove is generally aligned in the same plane in the upper surface of interior, all second grooves is generally aligned in the same plane, and each is second recessed
The shape of groove is all cuboid, and the shape of each the first groove is cuboid；Second engaging unit 12 can snap in
In two grooves 22, the first engaging unit 11 can be snapped in the first groove 21, and the lower surface of engaging unit is to be close to base band body
Upper surface；It is the appearance cable core chamber of empty cylindrical shape, protection pipe and reinforcer that the lower surface of base band body is formed internal
In appearance cable core chamber；There is vitta 8 in the vitta passage；First sheath is located at each first adjacent engaging unit
Between, the outer surface of all first sheaths, the vittate outer surface of institute are located on same circumference, and the second sheath is single by the 3rd engaging
Unit, the 4th engaging unit, the first sheath and vitta are enveloped.
A kind of cable or optical cable with multiple color identification strip described above, it is characterised in that the cable or optical cable
In, at least with two kinds of vittas of different color.
A kind of cable or optical cable with multiple color identification strip described above, it is characterised in that the base band body
Material is steel or iron or aluminium strip or fiberglass reinforced plastics.
A kind of cable or optical cable with multiple color identification strip described above, it is characterised in that the isolated part
Material is as the material of base band body.
A kind of cable or optical cable with multiple color identification strip described above, it is characterised in that the isolated part
Material is plastics.
A kind of cable or optical cable with multiple color identification strip described above, it is characterised in that the isolated part
Material can be as the material of base band body, it is also possible to different, and the material of such as isolated part can also be plastics；Institute
Plastics are stated for polyethylene or polypropylene or polyvinyl chloride or polytetrafluoroethylene (PTFE) or fiberglass reinforced plastics or poly terephthalic acid
Butanediol ester.
A kind of cable or optical cable with multiple color identification strip described above, it is characterised in that the material of the protection pipe
Material is polybutylene terephthalate (PBT) or steel or polypropylene.
A kind of cable or optical cable with multiple color identification strip described above, it is characterised in that second sheath
Material is transparent.
Further, a kind of cable or optical cable with multiple color identification strip described above, it is characterised in that described
The thickness of the second sheath is 0.2-1.0mm.
A kind of cable or optical cable with multiple color identification strip described above, it is characterised in that first engaging is single
The width of unit is 0.1-1.0mm.
A kind of cable or optical cable with multiple color identification strip described above, it is characterised in that the isolated part
Material is polyethylene or polypropylene or polyvinyl chloride or polytetrafluoroethylene (PTFE) or fiberglass reinforced plastics or poly terephthalic acid fourth
Diol ester.
During using plastics, can fully be combined together with the protective layer outside cable or with more cohesive force, made
The mechanical performances such as torsion, bending are more excellent；Certainly, manufacture is also allowed for.
Can be injected not in formation vitta passage between the 3rd engaging unit, the 4th engaging unit, laminating unit three
With the sheath material of color, different sheath colors can be so realized, meanwhile, can be by adjusting the 3rd engaging unit, the
Four engaging units, the size of laminating unit three make the width degree of changing of vitta passage, and then to realize the loose of vitta in sheath
Degree；Certainly, itself different colors can be also formed between multiple first sheaths, is not so increasing the situation of equipment and color separation mould
Under, it is the quantity that increased vitta using same technique.
In the present invention, by better simply structure and the design different from prior art, technical field of cables one is solved
Straight unsolved technical problem, the application is not that, from cable mould, having abandoned mold design in the prior art cannot solve
The certainly thinking of problem, composite band of the prior art does not have increased function and effect in the application, compound in the application
Band is it is of course possible to realize the problems of the prior art, as long as not using isolated part；The use of the application, not only increases applicant
The big sales volume of original composite band and extended the purposes of composite band, while expanding the popularity in industry
And reputation, receive many electric wires, the praise of optical fiber cable manufacturer.
A kind of cable or optical cable with multiple color identification strip described above, it is characterised in that the base band body is pressed
Weight portion meter, is made up of following raw material：Epoxy resin：30~40 parts, nylon：15~25 parts, polyethylene：15~25 parts, poly- second
Enol：5~10 parts, glass fiber yarn：60~70 parts, polypropylene anti-crack fiber：10~20 parts, EVA hot-melt adhesive：5~10 parts, carbon
Sour calcium：10~20 parts, magnesium hydroxide：3~6 parts, silica：12~18 parts, antioxidant 1098：1~3 part.
The base band body is most preferably formulated：By weight, it is made up of following raw material：Epoxy resin：35 parts, Buddhist nun
Dragon：20 parts, polyethylene：20 parts, polyvinyl alcohol：7.5 parts, glass fiber yarn：65 parts, polypropylene anti-crack fiber：15 parts, EVA heat
Melten gel：7.5 parts, calcium carbonate：15 parts, magnesium hydroxide：4.5 parts, silica：15 parts, antioxidant 1098：2 parts.
The less preferred formula of the base band body is：By weight, it is made up of following raw material：Epoxy resin：30 parts, Buddhist nun
Dragon：15 parts, polyethylene：15 parts, polyvinyl alcohol：5 parts, glass fiber yarn：60 parts, polypropylene anti-crack fiber：10 parts, EVA hot melts
Glue：5 parts, calcium carbonate：10 parts, magnesium hydroxide：3 parts, silica：12 parts, antioxidant 1098：1 part.
The base band body is more preferably formulated and is：By weight, it is made up of following raw material：Epoxy resin：40 parts,
Nylon：25 parts, polyethylene：25 parts, polyvinyl alcohol：10 parts, glass fiber yarn：70 parts, polypropylene anti-crack fiber：20 parts, EVA
PUR：10 parts, calcium carbonate：20 parts, magnesium hydroxide：6 parts, silica：18 parts, antioxidant 1098：3 parts.
Base band body described above, by detection, on a large scale, most preferably, less preferred, more preferably scheme obtain following number
According to.
As can be seen from the above table, the base band bulk material in the present invention has excellent mechanical performance, inhales block-water performance, high temperature resistant
Performance, fire resistance, nontoxic, excellent processing characteristics；Therefore, base band of the invention is gone back except in addition to can coating, strengthening protection
Effectively water stop function can be played；During using in cable or optical cable, inside can be not added with greasy for preventing water, the cable cream that blocks water, resistance
Pigment and water blocking yarn, it is also possible to the infiltration of effective ground resistance sealing point；This strength character, for waterstop of the prior art,
Non-woven fabrics etc. is to be beyond one's reach, and, this block-water performance, for steel band of the prior art, aluminium strip, copper strips, glass
Fiber band etc. is not all reached yet；Therefore after using the base band body in the present invention, material consumption can be effectively saved, reduce and produce
Product diameter, it is cost-effective, save freight charges, make construction lighter.
The present invention has following main Advantageous Effects：Simple structure, it is skillfully constructed, low cost, is easy to make, is made
Colored cable color boundaries can clearly debate, size is accurate, it is stronger not melt color, versatility between adjacent vitta.
The present invention is not limited to above-mentioned preferred forms, it will be appreciated that design of the invention can be by other a variety of shapes
Formula is implemented to use, and they are also fallen within protection scope of the present invention.
Claims (10)
1. a kind of cable or optical cable with multiple color identification strip, with reinforcer（9）, positioned at reinforcer it is outer and by cable or
Optical cable component wire（7）Three protection pipes for enveloping（6）, composite band outside protection pipe, the first shield outside composite band
Layer（4）, the second sheath outside the first sheath（5）；It is characterized in that the composite band has the base band of rectangular shape
（2）And multiple isolated parts（1）, each isolated part（1）By the first engaging unit（11）, the second engaging unit（12）, the 3rd
Engaging unit（13）, the 4th engaging unit（14）, laminating unit（15）Constitute, the first engaging unit is arcuate arc cylinder, second
Engaging unit is cuboid, and the first engaging unit is located at a left side for the centre and the first engaging unit above the second engaging unit
The right axis of symmetry coincides with the symmetrical axis of the second engaging unit, unit of fitting（15）Positioned at the first engaging unit top
Centre and laminating unit symmetrical axis coincided with the symmetrical axis of the first engaging unit, the 3rd engaging singly
Unit（13）From laminating unit upper surface right side upwardly extend, the 4th engaging unit（14）From laminating unit upper surface left side to
Upper extension；Vitta passage is formed between 3rd engaging unit, the 4th engaging unit, laminating unit three, the second engaging unit
The circular arc of upper surface is concentric with the circular arc on a surface of unit of fitting；Each isolated part is integral type structure；It is described
Base band is by base band body（20）Constitute, base band body interior has multiple horizontally disposed second grooves（22）, adjacent second
It is not attached to logical between groove, each second groove part is each second groove along the length direction insertion of base band body
Middle face center upwardly extend first groove perpendicular with second groove（21）, each first groove is through
The upper surface of base band body, the lower surface of all second grooves is generally aligned in the same plane the upper surface position of interior, all second grooves
In in same plane, the shape of each the second groove is cuboid, and the shape of each the first groove is cuboid；The
Two engaging units（12）The second groove can be snapped in（22）In, the first engaging unit（11）The first groove can be snapped in（21）In,
The lower surface of engaging unit is the upper surface for being close to base band body；It is empty cylinder that the lower surface of base band body is formed internal
The appearance cable core chamber of shape, protection pipe and reinforcer are located at and hold in cable core chamber；There is vitta in the vitta passage（8）；Described
One sheath is located between each first adjacent engaging unit, the outer surface of all first sheaths, the vittate outer surface position of institute
In on same circumference, the second sheath envelopes the 3rd engaging unit, the 4th engaging unit, the first sheath and vitta；The electricity
At least there are two kinds of vittas of different color in cable or optical cable.
2. a kind of cable or optical cable with multiple color identification strip according to claim 1, it is characterised in that the base
The material of band body is steel or iron or aluminium strip or fiberglass reinforced plastics.
3. a kind of cable or optical cable with multiple color identification strip according to claim 1 or claim 2, its feature
The material for being the isolated part is as the material of base band body.
4. a kind of cable or optical cable with multiple color identification strip according to claim 1 or claim 2, its feature
The material for being the protection pipe is polybutylene terephthalate (PBT) or steel or polypropylene.
5. a kind of cable or optical cable with multiple color identification strip according to claim 1 or claim 2, its feature
It is that the material of second sheath is transparent.
6. a kind of cable or optical cable with multiple color identification strip according to claim 5, it is characterised in that described
The thickness of two sheaths is 0.2-1.0mm.
7. a kind of cable or optical cable with multiple color identification strip according to claim 1 or claim 2, its feature
The width for being first engaging unit is 0.1-1.0mm.
8. a kind of cable or optical cable with multiple color identification strip according to claim 1 or claim 2, its feature
It is that the material of the isolated part is polyethylene or polypropylene or polyvinyl chloride or polytetrafluoroethylene (PTFE) or glass fiber reinforcement modeling
Material or polybutylene terephthalate (PBT).
9. a kind of cable or optical cable with multiple color identification strip according to claim 1 or claim 2, its feature
Be the base band body by weight, be made up of following raw material：Epoxy resin：30~40 parts, nylon：15~25 parts, it is poly-
Ethene：15~25 parts, polyvinyl alcohol：5~10 parts, glass fiber yarn：60~70 parts, polypropylene anti-crack fiber：10~20 parts,
EVA hot-melt adhesive：5~10 parts, calcium carbonate：10~20 parts, magnesium hydroxide：3~6 parts, silica：12~18 parts, antioxidant
1098：1~3 part.
10. a kind of cable or optical cable with multiple color identification strip according to claim 1 or claim 2, it is special
Levy be the base band body by weight, be made up of following raw material：Epoxy resin：35 parts, nylon：20 parts, polyethylene：20
Part, polyvinyl alcohol：7.5 parts, glass fiber yarn：65 parts, polypropylene anti-crack fiber：15 parts, EVA hot-melt adhesive：7.5 parts, calcium carbonate：
15 parts, magnesium hydroxide：4.5 parts, silica：15 parts, antioxidant 1098：2 parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710082154.3A CN106772867A (en) | 2017-02-15 | 2017-02-15 | A kind of cable or optical cable with multiple color identification strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710082154.3A CN106772867A (en) | 2017-02-15 | 2017-02-15 | A kind of cable or optical cable with multiple color identification strip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106772867A true CN106772867A (en) | 2017-05-31 |
Family
ID=58957484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710082154.3A Withdrawn CN106772867A (en) | 2017-02-15 | 2017-02-15 | A kind of cable or optical cable with multiple color identification strip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106772867A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111403088A (en) * | 2020-04-21 | 2020-07-10 | 国网湖北省电力有限公司鄂州供电公司 | Cable and optical cable easy to manufacture |
-
2017
- 2017-02-15 CN CN201710082154.3A patent/CN106772867A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111403088A (en) * | 2020-04-21 | 2020-07-10 | 国网湖北省电力有限公司鄂州供电公司 | Cable and optical cable easy to manufacture |
| CN111403088B (en) * | 2020-04-21 | 2024-04-16 | 国网湖北省电力有限公司鄂州供电公司 | Cable and optical cable easy to manufacture |
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Application publication date: 20170531 |
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