CN110989118B - Self-supporting bundling forming butterfly-shaped optical cable - Google Patents
Self-supporting bundling forming butterfly-shaped optical cable Download PDFInfo
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- CN110989118B CN110989118B CN201911380178.2A CN201911380178A CN110989118B CN 110989118 B CN110989118 B CN 110989118B CN 201911380178 A CN201911380178 A CN 201911380178A CN 110989118 B CN110989118 B CN 110989118B
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- 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
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- 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
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Abstract
The invention relates to the field of butterfly-shaped optical cables, and particularly discloses a self-supporting type cluster-forming butterfly-shaped optical cable which comprises a reinforced core, wherein an installation sheath is arranged outside the reinforced core, a plurality of installation grooves are formed in the circumferential direction of the outer wall of the installation sheath, the installation grooves are arranged along the axial direction of the installation sheath, and butterfly-shaped optical cable units are installed in the installation grooves; the outer surface of the mounting sheath extends outwards to form a hanging strip part and a hanging wire part located at the tail end of the hanging strip part, a hanging wire is arranged inside the hanging wire part, the butterfly-shaped optical cable unit comprises an outer sheath, an optical cable core is arranged in the outer sheath, reinforcing parts are symmetrically arranged on two sides of the optical cable core, and the butterfly-shaped optical cable unit is embedded into the mounting groove. The butterfly-shaped optical cable unit is embedded into the mounting groove formed in the outer wall of the mounting sheath, so that the butterfly-shaped optical cable unit can be used only by pulling out the butterfly-shaped optical cable unit from the mounting groove when a single butterfly-shaped optical cable unit is not used when the butterfly-shaped optical cable unit needs to be branched out in use.
Description
Technical Field
The invention relates to the field of butterfly-shaped optical cables, in particular to a self-supporting bunched butterfly-shaped optical cable.
Background
China is a multi-mountain country, the optical cable laying generally adopts an overhead mode, if other modes such as direct burial and pipeline are adopted, the feasibility becomes very poor, the cost is high, the technical difficulty is high, and the later maintenance is not facilitated. Although the overhead mode is relatively low in overall cost, if a common round optical cable is adopted, force bearing elements such as steel wires and steel strands need to be erected before the optical cable is constructed, high transportation and construction costs can be generated when the optical cable is constructed in a mountainous area, the self-supporting optical cable can solve the problem, the optical cable does not need to be erected with the force bearing elements such as the steel strands in the construction process and can be directly used for self-supporting overhead construction, so that the construction cost is greatly saved, and the construction difficulty is reduced; in addition, in rural villages or urban residential areas, sometimes, the light splitting and fiber splitting box of the EPON optical network is away from residential building groups by tens of meters or even hundreds of meters, the existing method is to connect a common beam tube type optical cable containing multi-core optical fibers after the light splitting and fiber splitting box is out, and then to connect each optical fiber in the common beam tube type optical cable to a butterfly optical cable through the fiber splitting box before reaching villages or urban residential buildings so as to connect the optical fiber to residents at home. Therefore, the problems of complex construction, high cost, large loss of continuous light, low reliability and the like caused by multiple times of optical fiber connection are solved.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a self-supporting bundled butterfly-shaped optical cable, which has the advantages that a plurality of butterfly-shaped optical cables are bundled together, so that the butterfly-shaped optical cables are conveniently separated during use and are convenient to use.
The purpose of the invention is realized by the following technical scheme: a self-supporting cluster-forming butterfly-shaped optical cable comprises a reinforced core, wherein an installation sheath is arranged outside the reinforced core, a plurality of installation grooves are circumferentially arranged on the outer wall of the installation sheath, the installation grooves are arranged along the axial direction of the installation sheath, and butterfly-shaped optical cable units are installed in the installation grooves;
a hanging strip part extends outwards from the outer surface of the mounting sheath, and a hanging wire is arranged inside the hanging wire part of the tail end of the hanging strip part;
the butterfly-shaped optical cable unit comprises an outer sheath, wherein an optical cable core is arranged in the outer sheath, and reinforcing parts are symmetrically arranged on two sides of the optical cable core;
the butterfly-shaped optical cable unit is characterized in that V-shaped grooves are axially formed in two sides of the outer sheath of the butterfly-shaped optical cable unit, V-shaped protrusions are arranged on the side walls of the two sides in the mounting groove, the butterfly-shaped optical cable unit is embedded into the mounting groove, and the V-shaped grooves formed in the butterfly-shaped optical cable unit are matched and fixed with the V-shaped protrusions arranged in the mounting groove.
Specifically, the two sides of the optical cable core are provided with tearing ropes, and the tearing ropes are arranged between the optical cable core and the reinforcing piece.
Specifically, the optical cable core comprises a loose tube layer and a plurality of optical fibers arranged in the loose tube layer, and fillers are filled among the plurality of optical fibers in the loose tube layer.
Specifically, the filler is ointment.
Specifically, the reinforcing core is made of flexible materials.
Specifically, when the butterfly-shaped optical cable unit is embedded into the mounting groove, glue is coated in the mounting groove, so that the butterfly-shaped optical cable unit is bonded with the mounting groove through the glue.
Specifically, the reinforcing member is a fiber-reinforced resin material.
Specifically, one side of the mounting groove, which is close to the reinforcing core, is provided with a bonding groove along the axial direction, and glue is coated in the bonding groove during coating, so that a line bonding is formed when the butterfly-shaped optical cable unit is bonded with the mounting groove, namely, the bonding area is a straight line.
Specifically, the suspension wire is a glass fiber suspension wire or a steel wire suspension wire.
Specifically, the sling part and the sling part are integrally formed with the mounting sheath.
The invention has the following advantages:
1. according to the invention, the hanging wire part and the hanging strip part extend out of the installation sheath, and the hanging wire for external hanging is arranged in the hanging wire part, so that the hanging wire is not required to be hung additionally during use, the hanging can be finished at one time, and the manpower and material resources are saved.
2. The butterfly-shaped optical cable unit is embedded into the mounting groove formed in the outer wall of the mounting sheath, so that when a single butterfly-shaped optical cable unit is not used when the butterfly-shaped optical cable unit is required to be branched out in use, the butterfly-shaped optical cable unit can be used only by pulling out the butterfly-shaped optical cable unit from the mounting groove.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic side view of the present invention;
FIG. 3 is a schematic structural view of the mounting sleeve of the present invention;
FIG. 4 is a schematic structural diagram of a butterfly-shaped optical cable unit according to the present invention;
FIG. 5 is an enlarged view taken at A in FIG. 3;
in the figure: 1-reinforcing core, 2-installation sheath, 3-outer sheath, 4-optical cable core, 5-reinforcing piece, 6-tearing rope, 7-installation groove, 8-V-shaped bulge, 9-V-shaped groove, 10-optical fiber, 11-filler, 12-loose sleeve layer, 13-bonding groove, 14-hanging part and 15-hanging wire. 16-suspender part.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following.
As shown in fig. 1 to 5, a self-supporting bundled butterfly-shaped optical cable comprises a reinforced core 1, wherein an installation sheath 2 is arranged outside the reinforced core 1, a plurality of installation grooves 7 are circumferentially arranged on the outer wall of the installation sheath 2, the installation grooves 7 are arranged along the axial direction of the installation sheath 2, and butterfly-shaped optical cable units are installed in the installation grooves 7; the butterfly-shaped optical cable unit comprises an outer sheath 3, an optical cable core 4 is arranged in the outer sheath 3, and reinforcing parts 5 are symmetrically arranged on two sides of the optical cable core 4; a hanging strip part 16 and a hanging line part 14 positioned at the tail end of the hanging strip part 16 extend outwards from the outer surface of the mounting sheath 2, and a hanging line 15 is arranged inside the hanging line part 14; the two sides of the outer sheath 3 of the butterfly-shaped optical cable unit are provided with V-shaped grooves 9 along the axial direction, the side walls of the two sides in the mounting groove 7 are provided with V-shaped protrusions 8, the butterfly-shaped optical cable unit is embedded into the mounting groove 7, and the V-shaped grooves 9 arranged on the butterfly-shaped optical cable unit are matched and fixed with the V-shaped protrusions 8 arranged in the mounting groove 7. In the prior art, the optical cable is laid in an overhead mode generally, and if other modes such as direct burial and pipeline are adopted, the feasibility becomes very poor, the cost is high, the technical difficulty is high, and the later maintenance is not facilitated; in the prior art, a plurality of optical cables are all coated in a sheath layer by adopting a self-supporting optical cable, and the structure has the defect that when the optical cable is required to be used, one optical cable can be taken out for use only by damaging the sheath layer, so that the other optical cables are lack of the coating of the sheath after the sheath is damaged and are likely to scatter to cause disorder winding, the invention integrates the defects of the prior art and provides the technical scheme, a hanging wire part 14 and a hanging wire part 16 extend outside the installation sheath 2, a hanging wire 15 used for hanging is arranged in the hanging wire part 14, and the hanging wire is not required to be additionally hung during use and can be hung and arranged at one time; the center of the optical cable is provided with a reinforcing core, the reinforcing core is made of nonmetal flexible materials, can be made of glass fiber and rubber materials, mainly plays a role of supporting a framework, and is required to have certain strength and strong flexibility, so that the optical cable is required to be made of flexible materials, and is often required to be bent when the optical cable is arranged; the butterfly-shaped optical cable units are uniformly distributed on the mounting sheath 2 arranged outside the reinforced core 1, and the mounting sheath 2 plays a role of bearing the butterfly-shaped optical cable, the mounting grooves 7 are formed in the outer wall of the outer sheath, the size of each mounting groove 7 is matched with the size of each butterfly-shaped optical cable unit to be assembled, and the width of each mounting groove 7 can be slightly smaller than that of each butterfly-shaped optical cable unit, but can ensure that the butterfly-shaped optical cable can be smoothly installed in the installation groove 7, the installation sheath 2 of the embodiment adopts materials such as low-smoke halogen-free flame-retardant polyolefin, polyvinyl chloride and the like, has certain elasticity, therefore, the size of the mounting groove 7 is slightly smaller than that of the butterfly-shaped optical cable unit, so that the butterfly-shaped optical cable unit can be mounted, the mounting effect is better, because the compression strength of the butterfly-shaped optical cable units by the two sides of the mounting groove 7 can be ensured, the butterfly-shaped optical cable units are fixed and stable in the mounting groove 7; the butterfly-shaped optical cable unit is embedded into the mounting groove 7 arranged on the outer wall of the mounting sheath 2, so that when a single butterfly-shaped optical cable unit is not used when the butterfly-shaped optical cable unit needs to be branched out, the butterfly-shaped optical cable unit can be used only by pulling out the butterfly-shaped optical cable unit from the mounting groove 7, because the butterfly-shaped optical cable unit is connected with the mounting sheath 2 in an embedding manner and is not in rigid connection, the mounting sheath 2 can be easily separated from the butterfly-shaped optical cable unit, the rest part can be continuously wired along with a main line, tree-shaped wiring can be realized, and when the butterfly-shaped optical cable unit needs to be used, one butterfly-shaped optical cable unit is separated out for use.
Furthermore, the two sides of the optical cable core 4 are provided with the tearing ropes 6, the tearing ropes 6 are arranged between the optical cable core 4 and the reinforcing part 5, when an independent butterfly-shaped optical cable unit is used, the outer sheath 3 of the optical cable needs to be stripped by using a stripper, and the final purpose is to strip the optical fiber for use.
Further, the optical cable core 4 includes a loose tube layer 12 and a plurality of optical fibers 10 disposed in the loose tube layer 12, a filler 11 is filled between the plurality of optical fibers 10 in the loose tube layer 12, and the filler 11 is ointment.
As shown in fig. 5, when the butterfly-shaped optical cable unit is inserted into the mounting groove 7, glue is applied to the mounting groove 7, so that the butterfly-shaped optical cable unit is adhered to the mounting groove 7 by the glue, one side of the mounting groove 7, which is close to the reinforced core 1, is provided with a bonding groove 13 along the axial direction, glue is coated in the bonding groove 13 during coating, so that the butterfly-shaped optical cable unit forms linear bonding when being bonded with the mounting groove 7, namely, the bonding area is a straight line, the invention not only fixes the optical cable unit through the V-shaped groove 9 arranged on the optical cable unit and the V-shaped bulge 8 arranged in the installation groove 7, but also coats glue in the V-shaped groove 9 to bond the butterfly-shaped optical cable unit in the installation groove 7, it should be noted that the invention does not coat glue in the installation groove 7 when bonding, but is selectively coated, the invention preferably coats the arc-shaped side wall of one side of the mounting groove 7 close to the reinforced core 1; the connection strength of the butterfly-shaped optical cable unit and the installation sheath 2 is too high when the inside of the installation groove 7 is completely coated, and the separation of the butterfly-shaped optical cable unit and the installation sheath 2 is not facilitated, so that the invention adopts a mode of coating glue in a partial area, the side, close to the reinforced core 1, of the installation groove 7 is provided with the bonding groove 13 along the axial direction, when the bonding is carried out, the glue is coated in the bonding groove 13, the purpose of the bonding groove 13 is to facilitate the bonding of the butterfly-shaped optical cable unit and the installation groove 7 into a line, if the bonding groove 13 is not arranged, the glue is only directly coated in the installation groove 7, when the butterfly-shaped optical cable unit is embedded in the installation groove 7, the arc part of the butterfly-shaped optical cable unit extrudes the arc part of the installation groove 7, so that the coated glue can diffuse along the gap between the butterfly-shaped optical cable unit and the installation groove 7, thus, the desired effect is not achieved; the invention provides a bonding groove 13 for bonding a butterfly-shaped optical cable unit with a mounting groove 7, which aims to solve the problem that when the butterfly-shaped optical cable unit needs to be separated for independent use, the butterfly-shaped optical cable unit can be separated from the mounting groove 7, after the butterfly-shaped optical cable unit is separated from the mounting groove 7, the original mounting groove 7 is vacant, and the vacancy brings about the problem that the two side walls of the mounting groove 7 can unload force to the mounting groove 7, so that the clamping force of the side walls of the adjacent mounting groove 7 on the butterfly-shaped optical cable unit is insufficient, and the butterfly-shaped optical cable is easy to be automatically separated, so the scheme for solving the problem is to bond the butterfly-shaped optical cable unit with the mounting groove 7 and bond through the scheme, the bonding has the advantage that the butterfly-shaped optical cable unit can be separated without using large force during separation, because a worker pulls the butterfly-shaped optical cable unit outwards along the radial direction of a mounting sheath 2 during, the bonding mode saves labor during separation and is convenient for separation; during bonding, glue does not need to be coated in the whole bonding groove 13, a segmented glue coating mode can be adopted for bonding, the effect of fixing the butterfly-shaped optical cable unit can be achieved, and the glue consumption is saved.
Further, the reinforcing member 5 is a fiber reinforced resin material.
The suspension wire 15 is made of glass fiber suspension wire or steel wire suspension wire.
As shown in fig. 2, the hanger part 16 and the hanger part 14 are integrally molded with the mounting sheath 2.
The invention discloses a manufacturing method of a self-supporting cluster butterfly-shaped optical cable, which comprises the following steps:
1. and (3) installing the optical cable core 4 on a fiber releasing shaft, and adjusting the fiber releasing tension of the optical fiber to be 30-90 g.
2. Two reinforcements 5 with the diameter of 0.5 mm-0.6 mm are arranged on a pay-off rack, the paying-off tension of the reinforcements 5 is adjusted, the paying-off tension is 5-10N, a suspension wire 15 is placed on the pay-off rack, the paying-off tension of the suspension wire 15 is adjusted, the paying-off tension is 5-10N, and the suspension wire 15 is made of glass fiber suspension wire or steel wire suspension wire;
the parallel reinforcing piece 5 adopts one of phosphated steel wires, fiber reinforced resin materials and glass Fiber Reinforced Plastic (FRP); at the same time, the tear string 6 is also placed on the pay-off stand.
3. And adjusting the butterfly-shaped optical cable extrusion molding die, wherein the die is required to be not eccentric, and the distance between the die core and the die sleeve is adjusted to ensure that the foremost end of the die core is 2-4 mm behind the die sleeve opening.
4. The optical cable core 4, the tearing rope 6, the suspension wire 15 and the parallel reinforcing piece 5 are led out in the wire receiving direction of the tension controller and are led into a mould.
5. Adjusting the extrusion molding temperature and the extrusion molding speed of the outer sheath material, wherein the extrusion molding temperature is 130-170 ℃, the extrusion molding speed is 50-60 m/min, coating a layer of outer sheath on the optical fiber and the parallel reinforcing part through an extrusion molding die, and carrying out secondary cooling through a hot water tank and a cold water tank, wherein the temperature of the hot water tank is 30-50 ℃, and the temperature of the cold water tank is 15-25 ℃ to obtain the butterfly-shaped optical cable unit. The butterfly-shaped optical cable unit is 2.8-3.0 mm in outer diameter, 0.4-0.6 mm in groove depth and 3-10N in sheath stripping force, and the optical fiber can be drawn out from the outer sheath by about 150-200 mm. The outer sheath can be made of low-smoke halogen-free flame-retardant polyolefin, polyvinyl chloride and the like. The extrusion temperature range of the polyvinyl chloride is 130-170 ℃, and the extrusion temperature range of the low-smoke halogen-free flame-retardant polyolefin is 125-165 ℃.
6. And (3) carrying out optical fiber attenuation, stripping force and length detection on the finished butterfly-shaped optical cable unit, installing the butterfly-shaped optical cable unit to a stranding cage pay-off rack after the butterfly-shaped optical cable unit is qualified, and adjusting the pay-off tension by 3-5N.
7. The reinforcing core 1 is placed on a pay-off stand, and the tension is adjusted.
8. Adjusting the extrusion molding temperature and the extrusion molding speed of the material of the installation sheath 2, wherein the extrusion molding temperature is 130-170 ℃, the extrusion molding speed is 50-60 m/min, coating a layer of outer sheath on the outer surface of the reinforced core through the extrusion molding die, and performing secondary cooling through a hot water tank and a cold water tank, wherein the temperature of the hot water tank is 30-50 ℃, and the temperature of the cold water tank is 15-25 ℃ to obtain the installation sheath 2, and the installation sheath 2 can be made of low-smoke halogen-free flame-retardant polyolefin, polyvinyl chloride and other materials. The extrusion temperature range of the polyvinyl chloride is 130-170 ℃, and the extrusion temperature range of the low-smoke halogen-free flame-retardant polyolefin is 125-165 ℃.
9. And embedding the butterfly-shaped optical cable unit into the mounting groove 7 on the mounting sheath 2.
The self-supporting cluster-forming butterfly-shaped optical cable can be used for direct connection between the output of a light splitting and fiber splitting box and an Optical Network Unit (ONU) of a user, and disconnection is not needed in the middle. The butterfly-shaped optical cable can be directly separated from the optical cable, and the butterfly-shaped optical cable and the whole self-supporting butterfly-shaped optical cable bundling optical cable do not need to be cut off in the middle, so that the construction is facilitated, the material cost is reduced, the optical joint loss is reduced, and the reliability is improved.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Those skilled in the art can make numerous possible variations and modifications to the described embodiments, or modify equivalent embodiments, without departing from the scope of the invention. Therefore, any modification, equivalent change and modification made to the above embodiments according to the technology of the present invention are within the protection scope of the present invention, unless the content of the technical solution of the present invention is departed from.
Claims (8)
1. The utility model provides a shaping butterfly-shaped optical cable tied in a bundle of self-supporting which characterized in that: the butterfly-shaped optical cable comprises a reinforced core (1), wherein an installation sheath (2) is arranged outside the reinforced core (1), a plurality of installation grooves (7) are circumferentially arranged on the outer wall of the installation sheath (2), the installation grooves (7) are axially arranged along the installation sheath (2), and butterfly-shaped optical cable units are installed in the installation grooves (7);
a hanging strip part (16) and a hanging wire part (14) positioned at the tail end of the hanging strip part (16) extend outwards from the outer surface of the mounting sheath (2), and a hanging wire (15) is arranged inside the hanging wire part (14);
the butterfly-shaped optical cable unit comprises an outer sheath (3), an optical cable core (4) is arranged in the outer sheath (3), and reinforcing pieces (5) are symmetrically arranged on two sides of the optical cable core (4);
v-shaped grooves (9) are axially formed in two sides of an outer sheath (3) of the butterfly-shaped optical cable unit, V-shaped protrusions (8) are arranged on the side walls of the two sides in the mounting groove (7), the butterfly-shaped optical cable unit is embedded into the mounting groove (7), and the V-shaped grooves (9) formed in the butterfly-shaped optical cable unit are matched and fixed with the V-shaped protrusions (8) formed in the mounting groove (7);
one side, close to the reinforcing core (1), of the mounting groove (7) is provided with a bonding groove (13) along the axial direction, when the butterfly-shaped optical cable unit is embedded into the mounting groove (7), glue is coated in the mounting groove (7), and the glue is coated in the bonding groove (13) when being coated, so that the butterfly-shaped optical cable unit and the mounting groove (7) are bonded to form linear bonding, namely, a bonding area is a straight line.
2. The self-supporting bundled butterfly-shaped optical cable according to claim 1, characterized in that: the optical cable is characterized in that tearing ropes (6) are arranged on two sides of the optical cable core (4), and the tearing ropes (6) are arranged between the optical cable core (4) and the reinforcing piece (5).
3. The self-supporting bundled butterfly-shaped optical cable according to claim 1, characterized in that: the optical cable core (4) comprises a loose sleeve layer (12) and a plurality of optical fibers (10) arranged in the loose sleeve layer (12), and fillers (11) are filled among the optical fibers (10) in the loose sleeve layer (12).
4. The self-supporting bundled butterfly-shaped optical cable according to claim 3, characterized in that: the filler (11) is ointment.
5. The self-supporting bundled butterfly-shaped optical cable according to claim 1, characterized in that: the reinforced core (1) is made of flexible materials.
6. The self-supporting bundled butterfly-shaped optical cable according to claim 1, characterized in that: the reinforcing member (5) is made of fiber reinforced resin material.
7. The self-supporting bundled butterfly-shaped optical cable according to claim 1, characterized in that: the suspension wire (15) is made of glass fiber suspension wire or steel wire suspension wire.
8. The self-supporting bundled butterfly-shaped optical cable according to claim 1, characterized in that: the sling part (16) and the suspension wire part (14) are integrally formed with the mounting sheath (2).
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| CN111781693A (en) * | 2020-08-08 | 2020-10-16 | 常熟梁方智能技术有限公司 | Nested optical cable of self-supporting structure and cable |
| CN112711109B (en) * | 2020-12-21 | 2022-03-22 | 江苏中天科技股份有限公司 | Easily-expanded butterfly-shaped leading-in optical cable, photoelectric composite cable and construction method of photoelectric composite cable |
| CN115685460B (en) * | 2022-09-13 | 2024-07-19 | 四川天邑康和通信股份有限公司 | Bundling butterfly-shaped optical cable and preparation method thereof |
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| CN204903821U (en) * | 2015-04-29 | 2015-12-23 | 江苏亨通光电股份有限公司 | Butterfly optical fiber cable that can lay in indoor stealth |
| CN204694900U (en) * | 2015-06-24 | 2015-10-07 | 江苏欣达通信科技股份有限公司 | Self supporting type multi-core butterfly branched cable |
| CN108008503A (en) * | 2017-10-17 | 2018-05-08 | 安徽电信器材贸易工业有限责任公司 | A kind of self-support cable with identification strip |
| CN107945925A (en) * | 2017-11-07 | 2018-04-20 | 长飞光纤光缆股份有限公司 | A kind of system-wide is by can photoelectric mixed cable in difference room |
| CN207908753U (en) * | 2018-01-16 | 2018-09-25 | 山东太平洋光纤光缆有限公司 | A kind of multicore access net self-support cable |
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