CN113156600B - Belt cable - Google Patents
Belt cable Download PDFInfo
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- CN113156600B CN113156600B CN202110473281.2A CN202110473281A CN113156600B CN 113156600 B CN113156600 B CN 113156600B CN 202110473281 A CN202110473281 A CN 202110473281A CN 113156600 B CN113156600 B CN 113156600B
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- sheath
- group
- core
- cable
- core cladding
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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
- G02B6/4403—Optical cables with ribbon structure
- G02B6/4404—Multi-podded
-
- 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
-
- 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
Abstract
The invention belongs to the technical field of optical cables, and particularly relates to a ribbon cable which comprises a sheath group and a cable core group sleeved in the sheath group, wherein the sheath group and the cable core group are respectively and independently arranged, the main structure of the cable core group is a hard core cladding, and the cross section profile of the core cladding is oval; the middle part of an arc in the width direction of the cross section of the core cladding protrudes outwards to form a positioning strip; a plurality of linear limiting strips are arranged on the inner wall of the sheath group at equal intervals, the linear limiting strips are distributed along the length direction of the optical cable, and the positioning strip is clamped between the two adjacent linear limiting strips. When the sheath group is deformed to the state that the positioning strips are separated from the positioning strips, the local section of the cable core group can deflect under the action of external force, and when the sheath group is restored, the positioning strips of the deflection part are clamped between the linear limiting strips again, so that the cable core in the cable core group can be in a torsion state under the condition that the optical cable is not twisted when the optical cable is laid, and the local section has better pressure resistance and bending resistance.
Description
Technical Field
The invention belongs to the technical field of optical cables, and particularly relates to a ribbon cable.
Background
The ribbon optical cable has the characteristic of large capacity, but with the increase of the capacity, the influence of external pressure and bending on the large-capacity cable core is very obvious, common faults are the increase of signal attenuation of individual cable cores, serious deformation of the optical cable after being pressed and limited bending radian, and the problems of large laying difficulty, high fault rate and the like of the large-capacity ribbon optical cable are caused.
The existing cables, including cables and optical cables, generally have buffer layers, increased sheath strength and reasonably used inner frames to solve the compression resistance problem of the cables, however, for large-capacity ribbon optical cables, because the optical fibers are bonded by resin, the stacked optical fiber ribbons have better bending performance only in the stacking direction, the buffer layers cannot solve the problem of cable core bending, the cable arrangement is affected by excessive hardness, and the inner frames reduce the capacity of the cable, so the structure of the ribbon optical cables needs to be further explored.
Disclosure of Invention
The present invention is directed to a ribbon cable having a movably installed core group that can be partially deflected under a force and can be fixed by a structure between the core group and a sheath group after deflection, thereby preventing restoration of a deflected section, and thus, the core group can be properly deflected according to structural characteristics of a fiber ribbon in the ribbon cable, thereby making the cable in an optimum laying state.
In order to achieve the purpose, the invention provides the following technical scheme: a belt cable comprises a sheath group and a cable core group sleeved in the sheath group, wherein the sheath group and the cable core group are respectively and independently arranged, the main body structure of the cable core group is a hard core cladding, the cross section profile of the core cladding is oval, and an optical fiber ribbon II is arranged in the core cladding; the two arc surfaces in the width direction of the cross section of the core cladding are contact surfaces which are contacted with the inner wall of the sheath group, the middle part of at least one contact surface protrudes outwards and forms a positioning strip, and the positioning strip extends along the length direction of the optical cable; a plurality of linear limiting strips are arranged on the inner wall of the sheath group at equal intervals, the linear limiting strips are distributed along the length direction of the optical cable, and the positioning strip is clamped between every two adjacent linear limiting strips; after the sheath group is deformed to the position strip and leaves the position strip, the partial section of the cable core group can deflect under the action of external force, and after the sheath group is restored, the position strip of the deflection part is clamped between the linear limit strips again, so that the deflection part of the cable core group keeps the deflection position.
In the technical scheme, the cable core group and the sheath group are separately arranged, when the sheath group is pressed, the inner space of the sheath group is widened, and the cable core group is oval, so that the cable core group can have moving spaces in four directions, namely, up, down, left and right, in the sheath group, and on the basis, the inner cable core group can be forced to deflect by applying pressure to the side surface of the sheath group; and when the cable core group recovers gradually, the positioning strip on the side surface of the cable core group can be clamped on the linear limiting strip on the inner wall of the cable core group again, and the maximum width of the cable core group at the moment is equal to the inner diameter of the cable core group, so that the cable core is positioned at the deflection position. According to the characteristic, when the optical cable is laid, the cable core in the optical cable can be in a twisted state under the condition that the optical cable is not twisted, so that the local section has better pressure resistance and bending resistance.
Preferably, the positioning strips are distributed discontinuously, the distance between two adjacent sections is greater than the distance between two adjacent linear limiting strips, and for the deflection part with torsion, the positioning strips on the deflection part can be clamped between different linear limiting strips respectively, so that the fixing strength of the deflection part is increased, and the deflection part of the cable core group is prevented from being restored due to internal stress.
Preferably, the cable core group further comprises two side sheaths which are arranged on two width surfaces of the core cladding layer, and the outermost sides of the side sheaths contact the inner wall of the sheath group; the sheath layer is deformed after being pressed and is slowly restored after the external force is eliminated. Above-mentioned core covering is oval, and the side sheath is filled between core covering and sheath group, and when the optical cable received the extrusion, the side sheath comes buffer pressure through deformation, can also make the optical cable reconversion gradually simultaneously, and when crooked, the side sheath can provide the holding power for core covering and sheath group simultaneously to improve the bending resistance of optical cable.
Preferably, the side sheath is hollow and is provided with a core wire inside, so that the space can be reasonably utilized, the capacity can be increased, and meanwhile, the side sheath is used as a channel of a special cable core to increase the function of the optical cable.
Preferably, a clamping groove is formed in the width surface of the core cladding, the side sheath is provided with a joint surface completely jointed with the width surface of the core cladding, a chimeric strip inserted into the clamping groove is arranged on the joint surface, and the joint surface is fixedly jointed with the width surface of the core cladding through an adhesive. Because the external force direction that the optical cable receives is indefinite, when sheath group extrusion side sheath from the side, the side sheath can have the trend that breaks away from with the core covering, and the cohesion between the two can be increased in the cooperation of draw-in groove and gomphosis strip to make the structure of whole cable core group have better stability.
Preferably, the core cladding is divided into two bilaterally symmetrical parts in the width direction of the cross section, specifically, the core cladding comprises a right-side core cladding I and a left-side core cladding II, the outer contour of the cross section of the right-side core cladding I and the outer contour of the left-side core cladding II are D-shaped, the core cladding I and the core cladding II are provided with adjacent welding surfaces, and the core cladding I and the core cladding II are connected through the welding surfaces in a fusion mode. Core cladding I and core cladding II have the holding chamber, and set up fibre optic ribbon II in the holding chamber. Through the core cladding I and the butt fusion of core cladding II with above-mentioned structure form the core cladding, except that make ribbon II isolated the setting, increase the protection to ribbon II, can also increase the anti deformation performance of core cladding. On this basis, when the middle part of core cladding I and core cladding II set up integrated into one piece's horizontal baffle, and this horizontal baffle falls into two parts of longitudinal symmetry with every holding chamber, and this can fall into four groups with the optic fibre in the whole core cladding, and every group all independently protects, and under horizontal baffle's effect, the anti deformability of whole core cladding can obtain further improvement.
Preferably, a positioning strip is arranged on one of the contact surfaces, the middle part of the other contact surface protrudes outwards to form limiting sliding heads, and the limiting sliding heads are distributed discontinuously and extend along the length direction of the optical cable; the inner wall of the sheath set is divided into two parts, one part of the inner wall is provided with linear limiting strips, the other part of the inner wall is provided with arc limiting strips, the arc limiting strips extend along the inner wall of the sheath set and are arranged at equal intervals in the length direction of the optical cable, and the limiting sliding heads are movably clamped between the arc limiting strips. Through the cooperation of spacing strip of arc and spacing slippery fellow, have bigger axial constraint power between whole cable core group and the sheath group, this can reduce cable core group for the sheath group at axial displacement, improve the holistic tensile strength of optical cable.
Preferably, the sheath group includes oversheath, metal covering and location sheath from outside to inside in proper order, and wherein the location sheath includes location sheath I and location sheath II two parts, and two parts are fixed the amalgamation together, spacing strip of arc and linear spacing strip set up respectively in the inner wall of location sheath I and location sheath II. The positioning sheath has a special structure and needs to be arranged separately from the cable core group, so that the positioning sheath is arranged into a split structure, is favorable for independent production and is convenient to assemble with the cable core group.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic cross-sectional structural view of an embodiment of the present invention;
FIG. 2 is a schematic view of the positioning sheath of the drawing;
figures 3 and 4 are schematic diagrams of an assembled structure of the cable core assembly and the core cladding of figure 1;
FIG. 5 is a schematic view of the construction of the side sheath of FIG. 1;
fig. 6 and 7 are schematic views of the application of force when twisting the optical cable according to the present embodiment.
In the figure, an outer sheath 1, a metal cladding 2, a positioning sheath I3, an arc-shaped limit strip 4, a core cladding I5, a positioning sheath II6, a linear limit strip 7, a side sheath 8, an optical fiber ribbon I9, a core cladding II10, a positioning strip 11, a magnetic reinforcing rib 12, an accommodating cavity 13, an optical fiber ribbon II14, a transverse partition plate 16, a water blocking cladding 17, a welding surface 18, a clamping groove 19, a limit sliding head 20, a jointing surface 21, an embedding strip 22 and longitudinal pressure F1Eccentric force F2Restoring force F3。
Detailed Description
The embodiments of the present application will be described in detail with reference to the drawings and examples, so that how to implement the technical means for solving the technical problems and achieving the technical effects of the present application can be fully understood and implemented.
Fig. 1-5 illustrate an embodiment of the present invention, a belt. The optical cable integrally comprises a sheath group and a cable core group sleeved in the sheath group, and the sheath group and the cable core group are independently arranged. Specifically, the sheath group comprises an outer sheath 1, a metal cladding 2 and a positioning sheath from outside to inside in sequence, and the outer sheath, the metal cladding 2 and the positioning sheath are tightly attached to each other. The positioning sheath comprises a right positioning sheath I3 and a left positioning sheath II6, the two parts are semi-annular and are fixedly spliced together through an inserting structure and an adhesive. As shown in fig. 2, a plurality of linear limiting strips 7 are arranged on the inner wall of the positioning sheath II6 at equal intervals, and the linear limiting strips 7 are distributed along the length direction of the optical cable; the other part of the inner wall of the positioning sheath I3 is provided with arc-shaped limiting strips 4, and the arc-shaped limiting strips 4 extend along the inner wall of the sheath group and are arranged at equal intervals in the length direction of the optical cable.
The main body structure of the cable core component is a hard core cladding, the cross section outline of the core cladding is oval, and an optical fiber ribbon II14 is arranged in the core cladding; specifically, the core cladding is divided into two bilaterally symmetrical parts in the width direction of the cross section, specifically comprises a right core cladding I5 and a left core cladding II10, the cross section outer contour of which is D-shaped, the core cladding I5 and the core cladding II10 are provided with adjacent fusion surfaces 18 and are connected through the fusion surfaces 18 in a fusion manner, and the magnetic reinforcing ribs 12 are respectively arranged in the core cladding I5 and the core cladding II 10. By welding the core cladding layer I5 and the core cladding layer II10 to form the core cladding, the optical fiber ribbon II14 is isolated, the protection of the optical fiber ribbon II14 is increased, and the deformation resistance of the core cladding can be increased. On the basis, when the transverse partition plates 16 integrally formed are arranged in the middle of the core cladding I5 and the core cladding II10, and each accommodating cavity 13 is divided into two parts which are symmetrical up and down by the transverse partition plates 16, the optical fibers in the whole core cladding can be divided into four groups, and each group is provided with a group of optical fiber ribbons II14 which are wrapped by the water blocking cladding 17. This allows each set of ribbons II14 to be independently protected, reducing the chance of failure, and further improving the resistance of the entire core cladding to deformation by the transverse partitions 16.
As shown in fig. 3 and 4, the two sides of the core cladding I5 and the core cladding II10 are arc contact surfaces which contact with the inner wall of the positioning sheath, wherein the middle part of the contact surface on the left side protrudes outwards and forms a positioning strip 11, and the positioning strip 11 extends along the length direction of the optical cable; the middle part of the contact surface on the right side protrudes outwards to form a limiting sliding head 20, and the limiting sliding heads 20 are distributed discontinuously and extend along the length direction of the optical cable.
The sheath group and the cable core group of the structure are movably sleeved, wherein the positioning strips 11 are clamped between adjacent linear limiting strips 7, and the limiting sliding heads 20 are clamped between adjacent arc limiting strips 4, so that the cable core group can rotate relative to the sheath group under the action of external force, and the linear limiting strips 7 can be clamped with the positioning strips 11, so that the rotated position is kept immovable. According to the characteristic, when the optical cable is laid, the cable core in the optical cable can be in a twisted state under the condition that the optical cable is not twisted, so that the local section has better pressure resistance and bending resistance. In actual laying, the cable core group of a local target section usually needs to be deflected, due to the constraint of the two side parts, the positioning strips 11 on the target section can be distorted, namely, the cable core group can be in curve distribution, in order to be stably clamped with the linear limiting strips 7, the positioning strips 11 are arranged discontinuously, the distance between two adjacent sections is greater than the distance between two adjacent linear limiting strips 7, and for the deflected part which is twisted, the positioning strips 11 on the deflected part can be clamped between different linear limiting strips 7 respectively, so that the fixing strength of the deflected part is increased, and the deflected part of the cable core group is prevented from being restored due to internal stress.
In order to increase the compression resistance of the optical cable, the cable core group further comprises two side sheaths 8, wherein the two side sheaths 8 are hollow and are internally provided with optical fiber ribbons I9. Specifically, the side jacket 8 has a contact surface 21 completely contacting the width surface of the core/clad layer, and the fitting strip 22 is provided on the contact surface 21. And be provided with the draw-in groove 19 with gomphosis strip 22 block on the width face of core package layer, during equipment side sheath 8 and core package layer, scribble the adhesive on binding face 21 and glue, under the mating reaction of draw-in groove 19 and gomphosis strip 22, the side sheath 8 can be more firm with the core package layer combination to the structure that makes whole cable core group has better stability, no matter which position external pressure comes from, the side sheath 8 can not take place the separation with the core package layer.
The optical fiber ribbon I9 and the optical fiber ribbon II14 in the ribbon optical cable are formed by overlapping a plurality of optical fiber ribbons and are overlapped along the thickness direction of a core cladding. Applying a longitudinal pressure F in a first direction to the sheath group when it is desired to deflect the core group during the laying of the cable1(F1Perpendicular to the width of the core wrap), the width of the sheath assembly is increased, and then a second azimuthal biasing force F is applied to the sheath assembly2(F2Edge portions directed toward the contact surface) when the cable core set is deflected to the state shown in fig. 6, and then a restoring force F in a third direction is applied to the sheath set3So as to accelerate the recovery speed of the sheath group, after the sheath group recovers, the positioning strips 11 of the cable core group are clamped to the position shown in figure 7, thereby completing the deflection of the cable core group.
As some terms are used throughout the description and claims to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect.
It is noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.
The foregoing description shows and describes several preferred embodiments of the invention, but as aforementioned, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. The utility model provides a ribbon cable, includes sheath group and the sheath group in the cable core group of suit, its characterized in that: the sheath group and the cable core group are independently arranged, the main body structure of the cable core group is a hard core cladding, the cross section outline of the core cladding is oval, and an optical fiber ribbon II is arranged in the core cladding; the two arc surfaces in the width direction of the cross section of the core cladding are contact surfaces which are contacted with the inner wall of the sheath group, the middle part of at least one contact surface protrudes outwards and forms a positioning strip, and the positioning strip extends along the length direction of the optical cable; a plurality of linear limiting strips are arranged on the inner wall of the sheath group at equal intervals, the linear limiting strips are distributed along the length direction of the optical cable, and the positioning strip is clamped between two adjacent linear limiting strips; after the sheath group is deformed to the position strip and leaves the position strip, the partial section of the cable core group can deflect under the action of external force, and after the sheath group is restored, the position strip of the deflection part is clamped between the linear limit strips again, so that the deflection part of the cable core group keeps the deflection position.
2. A belt cable according to claim 1, wherein: the positioning strips are distributed discontinuously, and the distance between every two adjacent sections is greater than the distance between every two adjacent linear limiting strips.
3. A belt cable according to claim 2, wherein: the cable core group also comprises two side sheaths which are arranged on two width surfaces of the core cladding layer, and the outermost side of the side sheaths contacts the inner wall of the sheath group; the sheath layer is deformed after being pressed and is slowly restored after the external force is eliminated.
4. A belt cable according to claim 3, wherein: the side sheath is hollow and is provided with a core wire inside.
5. A belt cable according to claim 4, wherein: the width face of the core cladding is provided with a clamping groove, the side sheath is provided with a binding face completely bound with the width face of the core cladding, the binding face is provided with an embedded strip inserted into the clamping groove, and the binding face is fixed and bound with the width face of the core cladding through an adhesive.
6. A belt cable according to claim 2, wherein: core cladding is divided into bilateral symmetry's two parts in the width direction of cross section, specifically includes that the cross section outline is D type's right side core cladding I and left core cladding II, and core cladding I and core cladding II have adjacent splice surface, and fuse the connection through the splice surface, and core cladding I and core cladding II have the holding chamber, and set up fiber ribbon II in the holding chamber.
7. A belt cable according to claim 6, wherein: the middle parts of the core cladding layer I and the core cladding layer II are provided with an integrally formed transverse partition board, and each accommodating cavity is divided into two parts which are symmetrical up and down by the transverse partition board.
8. A belt cable as claimed in any one of claims 2 to 7, wherein: a positioning strip is arranged on one contact surface, the middle part of the other contact surface protrudes outwards to form a limiting sliding head, and the limiting sliding heads are distributed discontinuously and extend along the length direction of the optical cable; the inner wall of the sheath group is divided into two parts, one part of the inner wall is provided with linear limiting strips, the other part of the inner wall is provided with arc limiting strips, the arc limiting strips extend along the inner wall of the sheath group and are arranged at equal intervals in the length direction of the optical cable, and the limiting sliding heads are movably clamped between the arc limiting strips.
9. A belt cable according to claim 8, wherein: the sheath group comprises an outer sheath, a metal covering layer and a positioning sheath from outside to inside in sequence, wherein the positioning sheath comprises a positioning sheath I and a positioning sheath II which are fixedly spliced together, and an arc-shaped limiting strip and a linear limiting strip are arranged on the inner walls of the positioning sheath I and the positioning sheath II respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110473281.2A CN113156600B (en) | 2021-04-29 | 2021-04-29 | Belt cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110473281.2A CN113156600B (en) | 2021-04-29 | 2021-04-29 | Belt cable |
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| Publication Number | Publication Date |
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| CN113156600A CN113156600A (en) | 2021-07-23 |
| CN113156600B true CN113156600B (en) | 2022-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110473281.2A Active CN113156600B (en) | 2021-04-29 | 2021-04-29 | Belt cable |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009093062A (en) * | 2007-10-11 | 2009-04-30 | Fujikura Ltd | Optical fiber cord cable |
| CN209784607U (en) * | 2019-03-25 | 2019-12-13 | 安徽长荣光纤光缆科技有限公司 | Anti-skid and wear-resistant optical fiber |
| CN209961971U (en) * | 2019-05-05 | 2020-01-17 | 新昌县智创机械有限公司 | Communication optical cable capable of reducing abrasion and convenient to connect |
| JP2020204685A (en) * | 2019-06-17 | 2020-12-24 | 古河電気工業株式会社 | Optical fiber cable |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10020912A1 (en) * | 2000-04-28 | 2001-10-31 | Scc Special Comm Cables Gmbh | Cable containing optical transmission elements and method for the production thereof |
| US10247838B1 (en) * | 2018-01-08 | 2019-04-02 | Saudi Arabian Oil Company | Directional sensitive fiber optic cable wellbore system |
-
2021
- 2021-04-29 CN CN202110473281.2A patent/CN113156600B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009093062A (en) * | 2007-10-11 | 2009-04-30 | Fujikura Ltd | Optical fiber cord cable |
| CN209784607U (en) * | 2019-03-25 | 2019-12-13 | 安徽长荣光纤光缆科技有限公司 | Anti-skid and wear-resistant optical fiber |
| CN209961971U (en) * | 2019-05-05 | 2020-01-17 | 新昌县智创机械有限公司 | Communication optical cable capable of reducing abrasion and convenient to connect |
| JP2020204685A (en) * | 2019-06-17 | 2020-12-24 | 古河電気工業株式会社 | Optical fiber cable |
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| CN113156600A (en) | 2021-07-23 |
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