CN217404593U - Flexible 8-shaped optical cable - Google Patents
Flexible 8-shaped optical cable Download PDFInfo
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- CN217404593U CN217404593U CN202221534530.0U CN202221534530U CN217404593U CN 217404593 U CN217404593 U CN 217404593U CN 202221534530 U CN202221534530 U CN 202221534530U CN 217404593 U CN217404593 U CN 217404593U
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Abstract
The utility model relates to a flexible 8-shaped optical cable, which comprises an optical cable part and a hoisting part which are arranged side by side; the hoisting part comprises a plurality of FRP, the FRP is spirally twisted to form a first central reinforcing piece, and a first outer sheath layer is coated on the outer side of the first reinforcing piece; the optical cable part comprises a second central reinforcing piece and optical units, the optical units are stranded around the second central reinforcing piece, binding yarns are wrapped outside the optical units, and a second outer sheath layer is wrapped outside the binding yarns; the first outer jacket layer and the second outer jacket layer form a sling at the joint. The utility model discloses with the mode formation first center reinforcement of many FRP with the spiral transposition, compare among the prior art with the single center reinforcement's of model form have good compliance, it is convenient fixed at the optical cable laying in-process, reduce the quantity of stiff end optical cable lopping, prevent to cause the waste.
Description
Technical Field
The utility model belongs to the technical field of the cable manufacturing technique and specifically relates to indicate a flexible 8 style of calligraphy optical cable.
Background
With the development of information technology, new technologies such as big data, block chains, cloud computing, internet of things and the like are serving digital rural construction, and the transmission of the information needs to be realized by optical cables.
From the construction degree of difficulty and economic angle, the mode of utilizing rural current electric power pole way to carry out built on stilts to lay is the most economical and practical and the fastest mode of construction speed of present rural broadband network construction, and this optical cable generally uses self-supporting "8" word cable structure, because its area strengthens the suspension wire, this optical cable does not need the supplementary installation of steel strand wires, has promoted construction speed.
In the prior art, a single Fiber Reinforced Plastic (FRP) is adopted as a central reinforcement for a suspension wire part of an 8-shaped optical cable, a mode of tying a winding at the end part of the optical cable and then tying a pull rope for traction is often adopted in the laying process of the optical cable, the larger the diameter of an FRP belt is, the larger the rigidity of the suspension wire part of the optical cable is, the larger the bending radius of the winding is, the use amount of the optical cable is increased, and the laying difficulty is increased.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model discloses the technical problem that solve lies in overcoming among the prior art 8 style of calligraphy optical cable rigidity great, lays the defect that the degree of difficulty is big.
In order to solve the technical problem, the utility model provides a flexible 8-shaped optical cable, which comprises an optical cable part and a hoisting part which are arranged side by side;
the hoisting part comprises a plurality of FRP bands, the FRP bands are spirally twisted to form a first central reinforcing piece, and a first outer sheath layer is wrapped outside the first reinforcing piece;
the optical cable part comprises a second central reinforcing piece and a plurality of optical units, the optical units are stranded around the second central reinforcing piece, binding yarns are wrapped on the outer sides of the optical units, and a second outer sheath layer is wrapped on the outer sides of the binding yarns;
the first outer jacket layer and the second outer jacket form a sling at a connection.
In an embodiment of the present invention, the optical unit includes an optical fiber, and a plurality of the optical fibers are sleeved with a loose tube.
In an embodiment of the present invention, a water-blocking fiber paste is filled between the optical fiber and the loose tube.
In an embodiment of the invention, a filling rope is further stranded between the light unit and the second center stiffener.
In an embodiment of the present invention, a water blocking tape is further disposed between the light unit and the binding yarn.
In an embodiment of the present invention, a cable paste is filled between the light unit and the water blocking tape.
In an embodiment of the present invention, a tear rope is further disposed between the light unit and the water blocking tape.
In an embodiment of the present invention, the material of the first outer sheath layer and the second outer sheath layer is polyethylene.
In an embodiment of the present invention, the second central reinforcement and the FRP belt are made of aramid fibers.
In an embodiment of the present invention, an inner sheath layer is further disposed between the bundle yarn and the second outer sheath layer.
Compared with the prior art, the technical scheme of the utility model have following advantage:
a flexible 8 style of calligraphy optical cable, with many FRP area with the first central reinforcement of mode formation of spiral transposition, compare the form of single root center reinforcement in the prior art and have good compliance, it is fixed convenient at the optical cable laying in-process, reduce the quantity of stiff end optical cable lopping, prevent to cause the waste.
Drawings
In order to make the content of the invention more clearly understood, the invention will now be described in further detail with reference to specific embodiments thereof, taken in conjunction with the accompanying drawings, in which
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of the cable section of FIG. 1;
fig. 3 is a schematic structural view of another embodiment of the present invention;
the specification reference numbers indicate: 1. a hoisting part; 2. an optical cable section; 3. a sling; 11. an FRP belt; 12. a first outer jacket layer; 21. a second central stiffener; 22. a light unit; 23. filling a rope; 24. a water blocking tape; 25. yarn binding; 26. tearing the rope; 27. a second outer jacket layer; 28. an inner jacket layer; 221. an optical fiber; 222. and (4) loosening the sleeve.
Detailed Description
The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.
Referring to fig. 1, the utility model discloses a flexible 8-shaped optical cable, which comprises an optical cable part 2 and a hoisting part 1 which are arranged side by side, wherein the hoisting part 1 is the special structure of the 8-shaped optical cable, and the optical cable carries a suspension wire and can be laid in a self-supporting manner, so that the optical cable can be conveniently erected and fixed in the laying process; and the optical cable part 2 is a main core of the entire wire harness for transmitting a signal portion.
In the utility model, the hoisting part 1 comprises a plurality of FRP belts 11, the FRP belts 11 are spirally twisted to form a first central reinforcement, and a first outer sheath layer 12 is coated outside the first reinforcement; specifically, the utility model discloses an optical cable compares among the prior art with the optical cable of a whole central reinforcement of model, and single FRP area 11 has less diameter among the many FRP area 11, lays the in-process at the optical cable, can separately fix many FRP area 11, compares a whole central reinforcement snap-on, has excellent flexibility, is convenient for when laying the fixed of tip, avoids because the waste that the lopping diameter of optical cable tip when fixed caused excessively.
As the preferred scheme of the utility model, seven FRP area 11 are adopted to the quantity of FRP area, and seven FRP area 11 form a cylindrical after becoming the thigh, extrude jointly with first oversheath layer 12 after seven FRP area 11 spiral transposition. Meanwhile, the contact area between the FRP bands 11 and the first outer sheath layer 12 is increased, and the stability of the optical cable during installation is increased to a certain extent.
Referring to fig. 2, the optical cable part 2 includes a second central strength member 21 and optical units 22, the optical units 22 are twisted around the second central strength member 21, the optical units 22 are covered with a binding yarn 25, and the binding yarn 25 is covered with a second outer sheath layer 27; it can be seen that the optical cable part 2 adopts a cable core layout of a stranded central reinforcing layer, wherein the second central reinforcing member 21 can increase the tensile strength of the whole optical cable, and the optical units 22 are stranded outside the second central reinforcing member 21 and then fixed by the binding yarns 25, so as to prevent the cable core in the optical cable part 2 from being loose when being extruded out of the second outer sheath layer 27. Of course, the second central reinforcing member 21 is made of the same FRP tape 11 (fiber reinforced composite material) as the first central material reinforcing member, and has a good tensile strength, thereby increasing the tensile strength of the entire optical cable.
It can be seen that, the utility model discloses with the mode formation first central reinforcement of many FRP area 11 with the spiral transposition, the form of comparing single root central reinforcement in the prior art has good compliance, and it is fixed that the in-process is laid at the optical cable to the convenience, reduces the quantity that the stiff end optical cable looped, prevents to cause the waste.
Further, the utility model discloses in, light unit 22 includes optic fibre 221, and the outside cover of many optic fibres 221 is equipped with loose pipe 222, and optic fibre 221 and loose pipe 222 clearance fit, loose pipe 222 can effectively prevent the external pressure to optic fibre 221, reduce the loss of optic fibre 221 transmission signal. In order to ensure the dryness of the optical fiber 221, water-blocking fiber paste is filled between the optical fiber 221 and the loose tube 222, and the water-blocking fiber paste has the advantages of high water absorption speed, high water absorption rate, good water-blocking performance and good manufacturability and quality stability. In terms of the manufacturing process, the light units 22 will be distributed outside the second central reinforcement 21 in an SZ-twisted manner.
Further, a filling rope 23 is twisted between the light units 22 and the second central reinforcing member 21, and a harness corresponding to the number of the light units 22 is selected according to the design of the laid line. The optical cable of the same model can correspond to the optical units 22 with different numbers, and in the wiring harness with fewer optical units 22, the optical units 22 can be replaced by the filling ropes 23, so that the shape and the size of the whole optical cable are ensured, and meanwhile, the normal operation of the whole process can be ensured.
Further, a water blocking tape 24 is arranged between the light unit 22 and the binding yarn 25, and cable paste is filled between the light unit 22 and the water blocking tape 24. Specifically, in the manufacturing process of the whole optical cable, the cable paste is firstly sprayed on the outer side of the optical unit 22, then the water blocking tape 24 is wound on the outer side of the optical unit 22, and finally the tying yarn 25 is wound on the outer side of the water blocking tape 24. The cable paste is water-blocking cable paste, which not only can play a waterproof role, but also can prevent the optical units 22 from being damaged due to mutual friction; and the surface of the water-blocking tape 24 is provided with a plurality of water-blocking powders which expand when meeting water, so that water is effectively prevented from entering the optical cable, and the water-blocking performance of the whole optical cable is further improved.
Further, since the cable core of the optical cable part 2 is composed of a plurality of wire harnesses, the wire harnesses are required to be separated during the laying process of the optical cable, and a tear cord 26 is further disposed between the optical unit 22 and the water blocking tape 24, so that the separation of the wire harnesses when workers are put into the room can be facilitated.
Furthermore, the outer diameter of a single FRP belt 11 is 0.9mm, taking the first central reinforcing member formed by spirally twisting seven FRP belts 11 as an example, the outer diameter of the seven FRP belts 11 after twisting is 2.7mm, the outer diameter of the second central reinforcing member 21 is 1.8mm, the size of the whole optical cable is smaller than that of a traditional 8-shaped optical cable, the cost is lower, and the flexibility and the bending resistance of the optical cable are excellent.
Further, as shown in fig. 3, as an embodiment of the present invention, an inner sheath layer 28 is further disposed between the bundle yarn 25 and the second outer sheath layer 27, that is, the inner sheath layer 28 is wrapped around the outside of the cable core of the optical cable part 2, so as to increase the compressive performance of the whole optical cable part 2, and prevent the external pressure from excessively extruding the internal optical fiber 221 to cause the attenuation of signal transmission.
The utility model discloses in, whole preparation materials are insulating material, and self-supporting lays, does not need the suspension wire. And the lightning-proof cable is not grounded, is not conductive after being struck by lightning, and can be laid along the same path with a low-voltage power wire. Compared with the traditional nonmetal full-medium 8-shaped cable, the optical cable is lighter in weight and smaller in outer diameter, and the labor intensity of laying is reduced.
The whole cable is made of polyethylene sheaths as the first outer sheath layer 12, the second outer sheath layer 27 and the inner sheath layer 28, so that the cable has wear-resistant and corrosion-resistant performances and can well protect the inner cable core. Secondly, second center reinforcement 21 with the material of FRP area 11 is aramid fiber, has better tensile resistance, increases the tensile strength of whole cable, secondly the utility model discloses in, the diameter of second center reinforcement 21 is twice of FRP area 11 diameter, and the diameter of preferred FRP area 11 is 0.9mm, and the diameter of second center reinforcement 21 is 1.8mm, and the size of whole optical cable reduces, and the cost is lower, and optical cable pliability and bending resistance ability are good.
To sum up, the utility model discloses a flexible 8-shaped optical cable, wherein a first central reinforcement in a hoisting part 1 is formed by twisting a plurality of FRP (fiber reinforce Plastic) belts 11, which has better flexibility compared with the single FRP belt 11 in the prior art, and is convenient for laying in the construction process; all manufacturing materials are insulating materials, and the self-supporting laying is realized without a suspension wire. And the lightning-proof cable is not grounded, is not conductive after being struck by lightning, and can be laid along the same path with a low-voltage power wire. Compared with the traditional nonmetal full-medium 8-shaped cable, the optical cable is lighter in weight and smaller in outer diameter, and the labor intensity of laying is reduced; the loose tube 222 is filled with fiber paste, the cable core is filled with cable paste, and the water-blocking tape 24 is wrapped outside the cable core, so that the waterproof performance is excellent.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications can be made without departing from the scope of the invention.
Claims (10)
1. A flexible 8-shaped optical cable is characterized in that: the cable lifting device comprises an optical cable part and a lifting part which are arranged side by side;
the hoisting part comprises a plurality of FRP belts, the FRP belts are spirally twisted to form a first central reinforcing piece, and a first outer sheath layer is coated on the outer side of the first central reinforcing piece;
the optical cable part comprises a second central reinforcing piece and a plurality of optical units, the optical units are stranded around the second central reinforcing piece, binding yarns are wrapped on the outer sides of the optical units, and a second outer sheath layer is wrapped on the outer sides of the binding yarns;
the first outer jacket layer and the second outer jacket form a sling at a connection.
2. The flexible 8-shaped optical cable according to claim 1, wherein: the optical unit comprises optical fibers, and loose tubes are sleeved on the outer sides of the optical fibers.
3. The flexible 8-shaped optical cable according to claim 2, wherein: and water-blocking fiber paste is filled between the optical fiber and the loose tube.
4. The flexible 8-shaped optical cable according to claim 1, wherein: a filler cord is also twisted between the light unit and the second center stiffener.
5. The flexible 8-shaped optical cable according to claim 1, wherein: and a water blocking tape is also arranged between the light unit and the binding yarn.
6. The flexible 8-shaped optical cable according to claim 5, wherein: and cable paste is filled between the optical unit and the water-blocking tape.
7. The flexible 8-shaped optical cable according to claim 5, wherein: and a tearing rope is also arranged between the light unit and the water blocking tape.
8. The flexible 8-shaped optical cable according to claim 1, wherein: the first outer sheath layer and the second outer sheath layer are both made of polyethylene.
9. The flexible 8-shaped optical cable according to claim 1, wherein: the second central reinforcing piece and the FRP belt are made of aramid fibers.
10. The flexible 8-shaped optical cable according to claim 1, wherein: an inner sheath layer is further arranged between the binding yarn and the second outer sheath layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221534530.0U CN217404593U (en) | 2022-06-17 | 2022-06-17 | Flexible 8-shaped optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221534530.0U CN217404593U (en) | 2022-06-17 | 2022-06-17 | Flexible 8-shaped optical cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217404593U true CN217404593U (en) | 2022-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221534530.0U Active CN217404593U (en) | 2022-06-17 | 2022-06-17 | Flexible 8-shaped optical cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217404593U (en) |
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2022
- 2022-06-17 CN CN202221534530.0U patent/CN217404593U/en active Active
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