CN202758109U - Armored bow-type optical cable - Google Patents
Armored bow-type optical cable Download PDFInfo
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- CN202758109U CN202758109U CN 201220118501 CN201220118501U CN202758109U CN 202758109 U CN202758109 U CN 202758109U CN 201220118501 CN201220118501 CN 201220118501 CN 201220118501 U CN201220118501 U CN 201220118501U CN 202758109 U CN202758109 U CN 202758109U
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Abstract
Provided is an armored bow-type optical cable. A bow-type optical cable with a gap in a wrapping protective layer structure of an optical fiber structure serves as a transmission medium. An armored structural layer formed by steel wires that are spirally and densely wound in order is disposed at the outer periphery of the bow-type optical cable via a covered water-blocking wrapping tape structure. The outmost layer is a sheath structural layer. The armored bow-type optical cable of the utility model achieves an effective decrease in size and weight, is easy to mount and maintain and has the function of effective flame retardance and rat resistance. Meanwhile, the armored bow-type optical cable maintains good transmission performance and is quite suitable to be paved in pipelines or on corridors where damage caused by rats is severe.
Description
Technical field
The utility model relates to a kind of armored bow-type optical cable, is particularly suitable for but non-only for being used for optical fiber to antenna (FTTA) or the armored bow-type optical cable that Fiber to the home (FTTH).
Background technology
Self-support aerial cable generally adopts figure-8 structure, and its top is bearing steel wire or twisted wire, and the bottom is communications optical cable.But the built on stilts gold utensil of general optical cable is circular anchor ear class formation, therefore have to the shaft tower place with the 8-shaped optical cable in bearing steel wire (or twisted wire) separate after again with fixing bearing steel wire (or twisted wire) part of gold utensil, operation has increased the quantities of communication construction inevitably like this.
Circular armored cable is a kind of conventional structure for particular surroundings in the outdoor optical cable, especially for crossing rivers optical cable, Shallow water cable, climbing optical cable that the physical features discrepancy in elevation is larger etc. under water.The normal exigent mechanical strength of this class optical cable, because the cable core of the optical cable that loose tube structure forms is larger, the armored optical cable size of designing like this increases, weight increases, thereby high to the shaft tower requirement, therefore is unsuitable for Self-bearing-type overhead.
Another kind of indoor armored cable is that the spiral steel bushing that employing is entwined by spiral helicine flat steel bar gap is load, withstand voltage element, and has good flexibility that cable size can be accomplished very little.But this class optical cable production efficiency is very low, needs special use to drive the stripping instrument, and production cost is high.
When optical cable is installed in pipeline or exist in the environment of the plague of rats, also the protection against rodents requirement need be arranged to optical cable.The optical cable protection against rodents can be adopted chemical method and Physical two classes.For environmental requirement, the physics protection against rodents is main path and direction, and present major way still is the structural design that adopts wire armoring or add steel belt layer.
The utility model content
The purpose of this utility model provides a kind of armored bow-type optical cable of new structure form, can reduce size and the weight of optical cable, and effective protection against rodents, keeps simultaneously the transmission performance of optical cable.
The basic structure of the utility model armored bow-type optical cable, to be with butterfly optical cable jaggy as transmission medium at the coating shielding layer structure of optical fiber structure, the stop water of its periphery through covering is provided with the whole sheathed structure layer that the guiding principle silk by the successively intensive winding of spiral consists of, and outermost layer is the jacket structure layer.
Because the rounding property that improves center part can be conducive to the spiral winding of guiding principle silk, when particularly adopting many steel wires stranded, can effectively avoid occurring twisting the abnormal occurrence generations such as quick-fried, overlapping.Therefore, described butterfly optical cable is preferably cross sectional shape for circular, oval, and similar shape with it, particularly adopts the butterfly optical cable that proposes in No. 201020545435.1 Chinese patents such as the applicant.In the utility model said structure in the butterfly optical cable outer cladding have the band structure that blocks water of some strength, also be conducive to guarantee and improve the center part that comprises butterfly optical cable to have good rounding property.
For ease of constructing operation, this butterfly optical cable coats the breach on shielding layer structure in the above-mentioned armored bow-type optical cable of the utility model, according to wherein number of fibers and/or form is set, can on its cross-wise direction symmetrically arranged one or more groups.The cross sectional shape of said breach can adjust accordingly according to operational different demands, such as rectangle or triangle etc., during with convenient construction to the operation of cutting open of restrictive coating.
In the armored bow-type optical cable of the utility model said structure, as the quantity of the cable core optical fiber structure of transmission medium, can be for single or many.For butterfly optical cable single or that optical fiber structure quantity is not many, said its outer stop water that is covered in can adopt the form that wraps fully to cover; Quantity for optical fiber structure is more, and when particularly adopting the folded band of optical fiber that contains at least 4 optical fiber structures, said this stop water can adopt parallel placement or be wrapped in its outer stop water layer form.
Particularly, when adopting the butterfly optical cable of the folded band forms transmission medium of above-mentioned optical fiber, also can further be designed to have the bulge-structure that is higher than its middle part with being positioned at the folded said coating shielding layer structure place with two outer ends of this optical fiber.Test shows, the bulge-structure at these both ends can form the buffering when withstand voltage to optical cable, is conducive to the signal attenuation of avoiding optical cable to produce when pressurized.
In above-mentioned butterfly optical cable structure, can also be by mode currently reported and/or that use, further be provided with steel wire etc. along fiber length and strengthen structure, to strengthen the stretch-resistance of optical cable, avoid that optical fiber is affected by external force and damages in the processes such as construction.
Said sheathed structure layer in the above-mentioned armored bow-type optical cable structure of the utility model preferably is made of the wire armoring structural sheet of integral form at least two guiding principle silks successively intensive voluble wrapping of spiral.The concrete quantity of steel wire is decided by the cable core size, generally need be booked to form complete armor.The stranded guiding principle silk quantity of spiral can be calculated according to the cable core size of butterfly optical cable.The screw pitch of spiral winding guiding principle silk is preferably 40 ~ 150mm, to guarantee and raising protection against rodents effect.
The guiding principle silk of said spiral winding can adopt corrosion-resistant, high strength guiding principle silk, as the stainless steel wire that has been reported and/or use, zinc plated mild carbon steel silk, phosphatization steel wire, piano wire or copper covered steel steel wire etc.
Test shows, if the guiding principle silk external diameter of described spiral winding is meticulous, wire jumper occurs easily, and mechanical property and mouse bite preventing performance also are difficult to guarantee; And external diameter is excessive, will be so that cable outer diameter increase, and weight increases, and is unfavorable for that Self-bearing-type overhead lays, and through test, its guiding principle silk external diameter generally can be chosen as 0.3 ~ 1.0mm, and preferred external diameter scope is 0.4 ~ 0.6mm.
Because above-mentioned armored bow-type optical cable can be used for outdoor environment, therefore there is the requirement of block-water performance, should use necessary material water-proof material structural sheet outside butterfly optical cable, generally can adopt nonwoven fabrics to add the composite structure of material water-proof material, thickness can be 0.10 ~ 0.25mm usually.Material water-proof material wherein can be the polymkeric substance that contains water-swellable, comprise polyacrylic acid commonly used or polypropylene salt and derivant thereof etc., such as greasy for preventing water (the poly alpha olefin oil mixture that contains the water-swellable polymkeric substance), or the form such as water blocking yarn (polyester that is stained with the water-swellable polymkeric substance rolls yarn), the outside can also coat polyester non-woven fabric band etc. again.The consumption of these materials can be adjusted according to butterfly optical cable and the wrapped intensive winding guiding principle of spiral Inter-wire gap size.
On the said structure basis, the outermost jacket structure layer of the utility model armored bow-type optical cable, preferably adopting thickness is black polyethylene or the halogen-free anti-flaming polyolefin sheath of 0.8～1.8mm, its further preferred thickness be 0.8～1.2mm.This outermost layer is the thickness of jacket structure layer, can select according to different application scenarios.For example, when armored bow-type optical cable of the present utility model was applied to outdoor environment and makes somebody a mere figurehead, restrictive coating can be the black polyolefin jacket of thickness 1.1～1.8mm; When being applied to indoor environment, this restrictive coating then can be adopted as 〉=halogen-free anti-flaming polyolefin sheath that 0.8mm is thick.
The armored bow-type optical cable of the utility model said structure, have the advantages such as physical dimension is little, lateral pressure resistant power is strong, pulling strengrth is high, mouse bite preventing, be suitable for the medium and small span Self-bearing-type overhead of FTTA or FTTH network, pipeline laying and have the applications such as terminal wiring, equipment room serial connection of plague of rats environment.
Below by the embodiment by the accompanying drawing illustrated embodiment, foregoing of the present utility model is described in further detail again.But this should be interpreted as that the scope of the above-mentioned theme of the utility model only limits to following example.Do not breaking away from the above-mentioned technological thought situation of the utility model, various replacements or change according to ordinary skill knowledge and customary means are made all should be included in the scope of the present utility model.
Description of drawings
Fig. 1 is the diagrammatic cross-section of a kind of single cored structure of the utility model armored bow-type optical cable.
Fig. 2 is the diagrammatic cross-section of a kind of multicore structure of the utility model armored bow-type optical cable.
Embodiment
Fig. 1 is the basic structure of the armored bow-type optical cable of a kind of single cored structure of the utility model.Optical fiber structure 1 at 250 μ m diameters is coated with the tight sleeve layer 2 that Polyvinylchloride consists of, form a kind of tight tube fiber of 900 μ m diameters, and be provided with the coating shielding layer structure 4 that a pair of steel wire is strengthened structure 3 and fire-retardant alkene along its length direction, consist of wide for 2.8mm, high be the elliptoid single core butterfly optical cable transmission medium of class for the cross section of 2.2mm, the symmetria bilateralis of its cross-wise direction is provided with one group of rectangular indentation 8, isolates tight tube fiber for peeling off coating shielding layer structure 4 during constructability.The external diameter that steel wire is strengthened structure 3 is 0.5mm, and modulus is not less than 190GPa.The polyester nonwoven band that is coated with by two-layer 0.05mm at this butterfly optical cable presss from both sides the thick band structure 5 that blocks water of 0.15mm that the powder that blocks water consists of.Outside the band structure 5 that blocks water, be provided with by the 21 corrosion-resistant low-carbon (LC) guiding principle of external diameter 0.5mm silks 6 along the stranded whole steel wire sheathed structure layer that is entwined of butterfly optical cable fiber length spiral.Corrosion-resistant low-carbon (LC) guiding principle silk 6 can be selected stainless steel wire, zinc plated mild carbon steel silk, phosphatization steel wire, piano wire or copper covered steel steel wire etc., is 50mm along the stranded pitch of the fiber length spiral of butterfly optical cable.The outermost layer of armored bow-type optical cable is extruded with the jacket structure layer 7 that the thick halogen-free anti-flaming polyolefin of 1.0mm consists of.The external diameter of this structure butterfly armored bow-type optical cable is 6.2mm, and weight 70kg/km is suitable for various interior architectures and lays with electrician's hard PVC penetration pipe, and can reach requirement fire-retardant, protection against rodents.
Shown in Figure 2, be a kind of multicore structure armored bow-type optical cable of the present utility model.Be from the different of Fig. 1 structure, be the optical fiber structure 1 in the oval-shaped multi-core fiber band of the class butterfly optical cable transmission medium in the cross section, for being with 9 by the many formed optical fiber of compact arranged optical fiber structure of parallel stacked are folded, each optical fiber is folded with to include six roots of sensation diameter in 9 be 250 μ m and coat optical fiber with fine base-material, be coated with respectively the thick stop water layer 10 of 0.3 ~ 0.4mm at its two relative parallel lateral surfaces, material is the band or by the composite band of block water band and other soft material (such as the complex that can be comprised of block water band and foamed material etc.) of blocking water, can also be with 9 inside that activity space is provided for optical fiber is folded simultaneously, avoid optical fiber to fold and be with 9 frictions and cause additional attenuation with coating shielding layer structure 4 adhesions, and guarantee the requirement that blocks water in this space.Be coated on optical fiber folded with 9 and stop water layer 10 outside coating shielding layer structure 4 in, also be arranged with a pair of steel wire that extends in the same way along optical fiber structure 1 and strengthen structure 3, consisting of wide is that 4.4mm, height are the class elliptical shape multi-core fiber band butterfly optical cable of 2.4mm.Be provided with the vee 8 of two groups of symmetries in the cross-wise direction that coats shielding layer structure 4, be used for construction to coating the strip operation of shielding layer structure 4.In butterfly optical cable, be positioned at folded coating shielding layer structure 4 places with 9 both ends of optical fiber, also be provided with the bulge-structure 11 that is higher than its position, middle part, the bearing capacity in the time of further improving the anti-side pressure of butterfly optical cable.Outside the band structure 5 that blocks water outside being coated on class elliptical shape multi-core fiber band butterfly optical cable, by the whole steel wire sheathed structure layer that the 31 corrosion-resistant low-carbon (LC) guiding principle of external diameter 0.5mm silks 6 consist of along the stranded winding of butterfly optical cable length direction spiral, the stranded pitch of spiral is 60mm.Corrosion-resistant low-carbon (LC) guiding principle silk 6 can be selected zinc plated mild carbon steel silk, phosphatization steel wire, piano wire or copper covered steel steel wire etc.The outermost layer of armored bow-type optical cable, for thickness be 1.2mm extrude black polyethylene jacket structure layer 7.The butterfly armored bow-type optical cable external diameter of this structure can be 8.1mm, and weight 92kg/km is suitable for yard piping and lays, and groove lays or Self-bearing-type overhead lays.It is 1500N that the block optical cable of the present embodiment can bear long-term installation tension, and equivalent span is 25 meters, therefore also is particularly suitable for the built on stilts wiring of self-supporting between buildings.In addition, this armored bow-type optical cable can also use in the regional long-term safety of muroid activity wildness.
Claims (10)
1. armored bow-type optical cable, it is characterized in that take at the coating shielding layer structure (4) of optical fiber structure (1) with the butterfly optical cable of jagged (8) as transmission medium, the stop water (5) of its periphery through covering is provided with the whole sheathed structure layer by guiding principle silk (6) formation of the successively intensive winding of spiral, and outermost layer is jacket structure layer (7).
2. armored bow-type optical cable as claimed in claim 1 is characterized in that the cross sectional shape of described butterfly optical cable comprises circle or ellipse.
3. armored bow-type optical cable as claimed in claim 1 is characterized in that described butterfly optical cable coats breach (8) on the shielding layer structure (4) for to be symmetrically arranged with at least one group on its cross-wise direction.
4. armored bow-type optical cable as claimed in claim 1 is characterized in that the said butterfly optical cable folded band of optical fiber (9) form for containing at least 4 optical fiber structures (1), and stop water (5) is for parallel placement or be wrapped in its outer stop water layer (10).
5. armored bow-type optical cable as claimed in claim 4 is characterized in that being positioned at the folded coating shielding layer structure (4) of (9) two outer ends of being with of optical fiber and locates to have the bulge-structure (11) that is higher than its middle part in butterfly optical cable.
6. such as the described armored bow-type optical cable of one of claim 1 to 5, it is characterized in that described sheathed structure layer is by the whole steel wire sheathed structure of the stranded wrapped formation of at least two guiding principle silks (6) spiral layer.
7. armored bow-type optical cable as claimed in claim 6, the spiral winding pitch that it is characterized in that the intensive winding guiding principle of described spiral silk (6) is 40 ~ 150mm.
8. armored bow-type optical cable as claimed in claim 6, the external diameter that it is characterized in that described guiding principle silk (6) is 0.3～1.0mm.
9. armored bow-type optical cable as claimed in claim 8, the external diameter that it is characterized in that described guiding principle silk (6) is 0.4～0.6mm.
10. such as the described armored bow-type optical cable of one of claim 1 to 5, it is characterized in that described restrictive coating (7) is black polyethylene or the halogen-free anti-flaming polyolefin sheath of 0.8～1.8mm for thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220118501 CN202758109U (en) | 2012-03-27 | 2012-03-27 | Armored bow-type optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220118501 CN202758109U (en) | 2012-03-27 | 2012-03-27 | Armored bow-type optical cable |
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| Publication Number | Publication Date |
|---|---|
| CN202758109U true CN202758109U (en) | 2013-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220118501 Expired - Lifetime CN202758109U (en) | 2012-03-27 | 2012-03-27 | Armored bow-type optical cable |
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| CN (1) | CN202758109U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353656A (en) * | 2013-06-18 | 2013-10-16 | 成都亨通光通信有限公司 | Self-supporting 8-shaped armored butterfly-type introduced optical cable |
| CN104330862A (en) * | 2014-11-13 | 2015-02-04 | 苏州胜信光电科技有限公司 | Anti-cracking indoor optical cable |
| CN105225739A (en) * | 2014-06-25 | 2016-01-06 | 江苏海达电缆有限公司 | Butterfly photoelectricity composite broadband house lead in |
| CN106125238A (en) * | 2016-08-29 | 2016-11-16 | 中天科技海缆有限公司 | A kind of wear-resistant submarine optical fiber cable |
| CN111427126A (en) * | 2020-03-30 | 2020-07-17 | 杭州富通通信技术股份有限公司 | Optical cable for preventing biting |
| CN114690349A (en) * | 2022-03-01 | 2022-07-01 | 杭州富通通信技术股份有限公司 | Optical cable for preventing biting |
-
2012
- 2012-03-27 CN CN 201220118501 patent/CN202758109U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353656A (en) * | 2013-06-18 | 2013-10-16 | 成都亨通光通信有限公司 | Self-supporting 8-shaped armored butterfly-type introduced optical cable |
| CN105225739A (en) * | 2014-06-25 | 2016-01-06 | 江苏海达电缆有限公司 | Butterfly photoelectricity composite broadband house lead in |
| CN104330862A (en) * | 2014-11-13 | 2015-02-04 | 苏州胜信光电科技有限公司 | Anti-cracking indoor optical cable |
| CN106125238A (en) * | 2016-08-29 | 2016-11-16 | 中天科技海缆有限公司 | A kind of wear-resistant submarine optical fiber cable |
| CN111427126A (en) * | 2020-03-30 | 2020-07-17 | 杭州富通通信技术股份有限公司 | Optical cable for preventing biting |
| CN114690349A (en) * | 2022-03-01 | 2022-07-01 | 杭州富通通信技术股份有限公司 | Optical cable for preventing biting |
| CN114690349B (en) * | 2022-03-01 | 2023-06-09 | 杭州富通通信技术股份有限公司 | Anti-biting optical cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130227 |