CN115938656A - Skeleton type photoelectric composite cable - Google Patents
Skeleton type photoelectric composite cable Download PDFInfo
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- CN115938656A CN115938656A CN202211689190.3A CN202211689190A CN115938656A CN 115938656 A CN115938656 A CN 115938656A CN 202211689190 A CN202211689190 A CN 202211689190A CN 115938656 A CN115938656 A CN 115938656A
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Abstract
The invention relates to a framework type photoelectric composite cable, which comprises: the cross section of the framework is of a flat structure, the framework comprises a long shaft and a short shaft, at least one sheet-shaped framework groove which is the same as the extension direction of the long shaft is formed in the framework, notches of the framework grooves are formed in the side wall of the short shaft, and the framework grooves are arranged in the framework at intervals along the extension direction of the short shaft; the optical fiber ribbons are arranged in the framework grooves, the optical fiber ribbons enter and exit the framework grooves from the groove openings, and only one optical fiber ribbon is arranged in one framework groove; the sheath layer is coated on the periphery of the flat framework; and the electric units are arranged on two sides of the framework along the extending direction of the sheath layer. The flat framework is arranged, so that the wide optical fiber ribbon can be accommodated, and the optical fiber ribbon can be supported and protected.
Description
Technical Field
The invention relates to the technical field of optical cable structure design, in particular to a framework type photoelectric composite cable.
Background
With the rapid development of the photoelectric communication industry and the dramatic increase of the information demand, the conventional optical cable with a small core number is difficult to meet the requirement of actual communication, in order to improve the density and the integration degree of optical fiber distribution, a ribbon combining technology can be adopted to combine and process a plurality of optical fibers to form an optical fiber ribbon, the conventional ribbon combining technology can realize 24-core optical fiber ribbon combining at most, the width of the combined optical fiber is only 6-8 mm, the optical fiber ribbon can be introduced into a loose tube or a skeleton groove to protect the optical fiber ribbon, and fig. 1 and fig. 2 are respectively a skeleton type optical fiber ribbon cable or a central beam tube type optical fiber ribbon cable in the prior art.
However, as the technology of ribbon merging of optical fibers matures, the existing ribbon merging technology is further improved, 72-core ribbon merging can be realized, the continuous improvement of the demand and the continuous development of the technology are required, the ribbon merging of 96-core or even 144-core optical fibers is possible subsequently, the width of the optical fiber ribbon can reach 20-40 mm, and the width of the existing skeleton groove needs to be changed or the inner diameter of the loose tube needs to be changed:
if the width of the framework groove is enlarged, the concave surface of the framework groove is enlarged, pressure applied from the outside is easily applied to the framework groove, the optical fiber in the framework groove is easily extruded, and if the width of the framework groove is increased, the diameter of the whole framework needs to be further enlarged in order to ensure the whole supporting force of the framework, so that the manufacturing cost and the transportation cost are increased;
if increase loose sheathed tube internal diameter, the diameter that can increase cable core and whole optical cable on the one hand, manufacturing cost and cost of transportation all can increase, on the other hand, loose sheathed tube is circular structure, in order to can the holding wider optical fiber ribbon, the diameter that needs to satisfy loose sheathed tube will be greater than the width of optical fiber ribbon at least, under such a condition, other positions in loose sheathed tube inside are just empty relatively, the optic fibre duty cycle is just very little, not only cause the waste in space, the optical fiber ribbon is bending deformation in loose sheathed tube still easily.
Disclosure of Invention
Therefore, the technical problem to be solved by the present invention is to overcome the problem that the optical fiber ribbon combining technology is not matched with the optical cable structure design in the prior art, and provide a framework type photoelectric composite cable, which is provided with a flat framework, and can accommodate a wider optical fiber ribbon and play a role in supporting and protecting the optical fiber ribbon.
In order to solve the above technical problem, the present invention provides a skeleton type photoelectric composite cable, including:
the cross section of the framework is of a flat structure, the framework comprises a long shaft and a short shaft, at least one framework groove which is the same as the long shaft in extension direction is formed in the framework, and a notch of the framework groove is formed in the side wall of the short shaft; a plurality of skeleton grooves are arranged in the skeleton at intervals along the extension direction of the short shaft;
the optical fiber ribbons are arranged in the framework grooves, the optical fiber ribbons enter and exit the framework grooves from the groove openings, and only one optical fiber ribbon is arranged in one framework groove;
the sheath layer is coated on the periphery of the flat framework;
and the electric units are arranged on two sides of the framework along the extending direction of the sheath layer.
In one embodiment of the present invention, the skeleton includes a plurality of supporting portions and a plurality of partition portions, the supporting portions extend along the short axis, the partition portions extend along the long axis, the partition portions are connected to the supporting portions, and the skeleton grooves are formed between two adjacent partition portions and the supporting portions between the two partition portions.
In one embodiment of the invention, the plurality of supporting parts sequentially connect the plurality of partition parts in sequence to form a serpentine reciprocating bending structure, and the framework grooves are alternately distributed on two sides of the framework at intervals.
In an embodiment of the invention, the plurality of supporting portions are arranged on the same straight line to form a supporting wall, the supporting wall is a side wall of the framework, the plurality of separating portions are all arranged on one side surface of the supporting arm, and the framework grooves are distributed on one side of the framework.
In one embodiment of the invention, the supporting wall is arranged in the middle of the framework, a plurality of partition parts are arranged at the same positions on two sides of the supporting part, the length of the partition parts arranged on two sides of the supporting wall is the same, and the framework grooves are symmetrically distributed on two sides of the framework.
In one embodiment of the present invention, the supporting wall is disposed at a middle position of the frame, a plurality of partitions are disposed at the same position on both sides of the supporting portion, the partitions disposed on both sides of the supporting wall have different lengths, and the frame slots have different lengths.
In one embodiment of the invention, a protruding step is arranged at the notch of the framework groove, the step is arranged on the inner side wall of the framework groove, the step is arranged on one inner side wall or two corresponding inner side walls, and the step semi-blocks the notch of the framework groove.
In one embodiment of the present invention, an inclined surface is provided between the step and an inner sidewall of the frame groove.
In one embodiment of the invention, a sealing strip for sealing the notch is arranged at the notch of the framework groove.
In one embodiment of the invention, the flat skeleton is further coated with a water-resistant layer.
Compared with the prior art, the technical scheme of the invention has the following advantages:
the invention discloses a skeleton type photoelectric composite cable, which is characterized in that a skeleton is arranged to protect an optical fiber ribbon, the optical fiber ribbon is arranged in a skeleton groove, and a lateral supporting force is provided for the optical fiber ribbon through the skeleton;
in addition, the framework is arranged to separate the optical fiber ribbons, and only one optical fiber ribbon can be accommodated in one framework groove, so that the condition that the stacked optical fiber ribbons are difficult to separate can be prevented.
Drawings
In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the embodiments of the present disclosure taken in conjunction with the accompanying drawings, in which
FIG. 1 is a schematic diagram of a prior art slotted core fiber optic cable;
fig. 2 is a schematic structural diagram of a central tube type optical fiber ribbon cable in the prior art.
Fig. 3 is a schematic structural diagram of embodiment 1 of the framework-type photoelectric composite cable of the present invention;
fig. 4 is a schematic structural diagram of embodiment 2 of the framework-type photoelectric composite cable of the present invention;
fig. 5 is a schematic structural diagram of embodiment 3 of the skeletal photoelectric composite cable of the present invention;
fig. 6 is a schematic structural diagram of embodiment 4 of the skeletal photoelectric composite cable of the present invention;
description reference numbers indicate: 1. a framework; 11. a framework groove; 12. a support portion; 13. a partition portion; 14. a step; 2. an optical fiber ribbon; 3. a water blocking tape; 4. a sheath layer; 5. an electrical unit.
Detailed Description
The present invention is further described below in conjunction with the drawings and the embodiments so that those skilled in the art can better understand the present invention and can carry out the present invention, but the embodiments are not to be construed as limiting the present invention.
As described above, with the improvement of the optical fiber ribbon combining technology, the existing ribbon combining technology can already achieve ribbon combining of 72-core optical fibers, and may increase the number of optical fiber ribbons 2 after ribbon combining, and the width of the optical fiber ribbons 2 after ribbon combining has reached more than 20 mm, and the loose tube and the skeleton groove 11 of the existing circular structure have failed to meet the condition for placement thereof, and therefore, a flat optical cable structure needs to be adopted, however, since the cross section of the flat optical cable is of a sheet structure, compared with the circular optical cable, the flat surface of the flat optical cable is more easily stressed and bent in the radial direction, and when bending is performed, the optical fiber ribbons 2 inside are easily extruded, and fracture of the optical fiber ribbons 2 is caused, and therefore, in the case of changing the structure of the optical cable, performance of the optical cable needs to be considered, the present invention is to design a scheme, which can introduce the skeleton 1 into the flat optical cable, and in the skeleton 1, not only a relatively wide accommodating groove is provided, and can accommodate the wider optical fiber ribbons 2, but also can play a role of supporting and protecting the optical fiber ribbons 2 through the skeleton 1.
The invention discloses a framework type photoelectric composite cable, which comprises: the optical fiber cable comprises a framework 1, an optical fiber ribbon 2 arranged in the framework 1, a sheath layer 4 coated outside the framework 1, and electric units 5 arranged on two sides of the framework along the extending direction of the sheath layer; the specific assembling mode is as follows: embedding an optical fiber ribbon 2 in the framework 1, wherein the optical fiber ribbon 2 is used as a communication unit to realize transmission of optical signals, the framework 1 is used as a supporting unit to protect and support the optical fiber ribbon 2, finally, a sheath layer 4 is injected outside the framework 1 to cover and seal the framework 1, and an electric unit 5 is introduced while the sheath layer is injected;
specifically, in order to have the above performance, the framework 1 is designed to have at least the capability of accommodating a wider optical fiber ribbon 2 and the protection capability for the optical fiber ribbon 2, so that the cross section of the framework 1 of the present invention is a flat structure, the framework 1 includes a long axis and a short axis, at least one sheet-shaped framework groove 11 having the same extending direction as the long axis is arranged in the framework 1, a sufficient width capable of accommodating the optical fiber ribbon 2 is reserved in the framework groove 11, a plane where the long axis is located is supported by the framework 1, and when the long axis surface of the framework 1 is subjected to lateral pressure, the pressure acts on the framework 1 and is not directly transmitted to the optical fiber ribbon 2; the notches of the skeleton grooves 11 are arranged on the side walls of the short shafts, the optical fiber ribbon 2 enters and exits the skeleton grooves 11 from the notches, and the conventional embedding mode of the optical fiber ribbon 2 is changed, the optical fiber ribbon 2 is introduced into the skeleton grooves 11 from the notches from the thickness surface of the optical fiber ribbon 2, so that the width of the notches is only required to be larger than the thickness of the optical fiber ribbon 2, the requirement that the openings of the notches are small is met, and the optical fiber ribbon 2 is not easily directly extruded when the short shaft surface of the skeleton 1 is subjected to lateral pressure; moreover, the notch is formed in the side wall of the short shaft, when the long shaft surface of the framework 1 is bent under stress, a bending space for bending the framework 1 is formed in the direction of the gap at the notch, so that the framework 1 has certain flexibility, and the framework 1 is prevented from being broken under stress;
specifically, in order to further improve the transmission capability of the optical cable, according to the requirement, a plurality of skeleton grooves 11 may be provided, the plurality of skeleton grooves 11 are arranged in the skeleton 1 at intervals along the short axis extending direction, in the actual use process, only one optical fiber ribbon 2 is arranged in each skeleton groove 11, so that the optical fiber ribbons 2 are prevented from being stacked and adhered together and are difficult to separate, and the width of the skeleton groove 11 is set to be slightly larger than the width of the optical fiber ribbon 2, so that the optical fiber ribbons 2 can be completely embedded in the skeleton groove 11.
Referring to fig. 3 to 6, according to the functional requirements of the framework groove 11, and in combination with practical use requirements, the invention discloses the following specific framework 1 structures:
example 1
Referring to fig. 3, the framework 1 of the present embodiment includes a plurality of supporting portions 12 and a plurality of partition portions 13, where the supporting portions 12 extend along the short axis direction, the partition portions 13 extend along the long axis direction, the supporting portions 12 sequentially connect the partition portions 13 in sequence to form a serpentine reciprocating bending structure, two adjacent partition portions 13 and the supporting portion 12 between two partition portions 13 form framework slots 11, and the framework slots 11 are alternately distributed on two sides of the framework 1 at intervals;
in the framework grooves 11 of the present embodiment, the framework grooves 11 are formed on both sides of the framework 1, when the long axial surface of the framework 1 is subjected to a bending force, a space capable of bending is formed on both sides of the framework 1, and when the framework 1 is subjected to a bending force, the stress of the whole framework 1 is more even, and the stress is distributed to each position of the framework 1.
Example 2
Referring to fig. 4, the framework 1 of the present embodiment includes a plurality of supporting portions 12 and a plurality of dividing portions 13, where the supporting portions 12 extend along the direction of the short axis, the dividing portions 13 extend along the direction of the long axis, the plurality of supporting portions 12 are disposed on the same straight line to form a supporting wall, the supporting wall is a side wall of the framework 1, the plurality of dividing portions 13 are disposed on a side surface of the supporting arm, and the supporting portions 12 between two adjacent dividing portions 13 and two dividing portions 13 form framework slots 11, and the framework slots 11 are distributed on one side of the framework 1;
in the framework groove 11 of the present embodiment, the framework groove 11 is formed on one side of the framework 1, and when the framework 1 is skylight-opened, the optical fiber ribbon 2 can be led out from a single side by peeling off the optical fiber cable on one side, which is convenient for taking and placing the optical fiber ribbon 2.
Example 3
Referring to fig. 5, the framework 1 of the present embodiment is further improved on the basis of the above embodiment 2, so as to further increase the capacity of the optical fiber ribbon 2 of the framework 1, the supporting wall is disposed at the middle position of the framework 1, a plurality of partition portions 13 are disposed at the same positions on both sides of the supporting wall, the length of the partition portions 13 disposed on both sides of the supporting wall is the same, the framework grooves 11 are formed by two adjacent partition portions 13 and the supporting arms between the two partition portions 13, and the framework grooves 11 are symmetrically distributed on both sides of the framework 1.
Example 4
In practical engineering application, according to different working condition requirements, the number of optical fibers to be used is also different, and in order to be applicable to different use environments, on the basis of the above-mentioned embodiment 3, a structure of the framework 1 may be further flexibly set, as shown in fig. 6, in this embodiment, the supporting wall is disposed at a middle position of the framework 1, a plurality of partition portions 13 are disposed at the same positions on both sides of the supporting wall, a framework groove 11 is formed by the supporting arms between two adjacent partition portions 13 and the two partition portions 13, and the partition portions 13 disposed on both sides of the supporting wall have different lengths, so that the lengths of the framework grooves 11 are different, and according to the working condition requirements, the optical fiber ribbons 2 having different widths may be accommodated in the framework grooves 11 having different lengths.
Specifically, in embodiments 1 to 4, the framework 1 has flexibility capable of being bent to a certain extent by providing the notches, but when the framework 1 is bent under stress, the space at the notches will be changed, and the optical fiber ribbon 2 located at the notches easily receives an extrusion force, which easily causes bending and breaking of the optical fiber ribbon 2, and the framework 1 of this embodiment needs to have certain flexibility and also needs to ensure that the optical fiber ribbon 2 is not extruded when being bent, so that the notches of the framework grooves 11 are provided with the protruding steps 14, the steps 14 are arranged on the inner side walls of the framework grooves 11, and when the framework 1 is bent under stress, the supporting of the steps 14 always keeps the complete space capable of accommodating the optical fiber ribbon 2 in the framework grooves 11, and the optical fiber ribbon 2 is placed and extruded;
specifically, the steps 14 are arranged in the following two ways:
referring to fig. 3 and 5, in the above embodiments 1 and 3, the step 14 is disposed on an inner side wall, and a space for bending the framework 1 is formed between the step 14 and the inner side wall;
referring to fig. 4 and 6, in the above embodiments 2 and 4, the steps 14 are correspondingly arranged on the two inner side walls, and a space for bending the framework 1 is formed between the two steps 14.
Meanwhile, the step 14 is arranged at the notch, so that the optical fiber ribbon 2 can be prevented from sliding out of the framework groove 11, the step 14 semi-blocks the notch of the framework groove 11, and when the optical fiber ribbon 2 needs to be embedded into the framework groove 11 or led out of the framework groove 11, an opening mold can be used for expanding the notch, so that the opening width at the notch is larger than the thickness of the optical fiber; as shown in fig. 3 to 6, in order to prevent the optical fiber ribbon 2 from being caught on the step 14, an inclined surface is provided between the step 14 and the inner wall of the frame groove 11, and the optical fiber ribbon 2 slides out along the inclined surface after the notch is opened.
In other embodiments, in order to seal the notch, a T-shaped sealing strip may be disposed at the notch, the sealing strip needs to have certain elasticity, and can be extruded and deformed when the framework 1 is stressed and bent, so that the flexibility of the framework 1 is not affected, one end of the sealing strip is inserted into and seals the notch, two sides of the sealing strip are lapped on the framework 1, the sealing strip is prevented from being completely embedded into the framework groove 11, and the sealing strip is conveniently taken out of the framework groove 11.
Specifically, the optical fiber ribbon 2 in the above embodiments 1 to 4 is formed by bonding loose optical fibers by ribbon-by-ribbon resin, and the optical fiber ribbon 2 includes 24 to 72 core optical fibers formed by ribbon-by-ribbon according to an optical fiber standard color spectrum or a pilot optical fiber color spectrum.
Specifically, moisture factors may affect the transmission efficiency and the service life of the optical fiber, and therefore, a certain water blocking measure needs to be adopted in the optical cable when the optical fiber needs to be arranged in a relatively dry environment, as shown in fig. 3 to 6, in order to further improve the water blocking performance of the optical cable, a water blocking layer is coated outside the frameworks 1 of the above embodiments 1 to 4, the water blocking layer is a water blocking tape 3, and the water blocking tape 3 can play a role in absorbing water and keeping the environment outside the optical fiber relatively dry on one hand, and on the other hand, the water blocking tape 3 has a water absorbing expansion characteristic and can play a role in blocking water after expansion;
specifically, the winding modes of the water-blocking tape 3 outside the framework 1 are two:
1. longitudinally wrapping the water-blocking tape 3, wherein the position of a lapping edge of the longitudinally wrapped water-blocking tape 3 is required to be at the same position relative to the framework 1, and certain requirements are provided for the width of the selected water-blocking tape 3: the lap width of the water-blocking tape 3 is ensured to be more than 5mm.
2. And (3) winding the water-blocking tape 3, taking the framework 1 as an axis, and spirally winding the water-blocking tape outside the framework 1, wherein the winding overlapping rate of the water-blocking tape 3 is required to be ensured to be 25-45%.
Specifically, the sheath layer 4 in the above embodiments 1 to 4 is prepared by using a low smoke zero halogen flame retardant, and the sheath layer 4 has the properties of ultraviolet resistance, water resistance, mildew resistance, and environmental stress cracking resistance; and no acid gas is released, the equipment in a machine room is not corroded, and the flame retardant is suitable for the indoor environment with high flame retardant grade.
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 variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. A skeleton-type photoelectric composite cable, comprising:
the cross section of the framework is of a flat structure, the framework comprises a long shaft and a short shaft, at least one sheet-shaped framework groove which is the same as the extension direction of the long shaft is formed in the framework, notches of the framework grooves are formed in the side wall of the short shaft, and the framework grooves are arranged in the framework at intervals along the extension direction of the short shaft;
the optical fiber ribbons are arranged in the framework grooves, the optical fiber ribbons enter and exit the framework grooves from the groove openings, and only one optical fiber ribbon is arranged in one framework groove;
the sheath layer is coated on the periphery of the flat framework;
and the electric units are arranged on two sides of the framework along the extending direction of the sheath layer.
2. The skeletal type photoelectric composite cable according to claim 1, wherein: the framework comprises a plurality of supporting parts and a plurality of separating parts, the supporting parts extend along the direction of the short shaft, the separating parts extend along the direction of the long shaft, the separating parts are connected with the supporting parts, and framework grooves are formed between two adjacent separating parts and the supporting parts between the two separating parts.
3. The skeletal photoelectric composite cable of claim 2, wherein: the supporting parts sequentially connect the separating parts in sequence to form a snake-shaped reciprocating bending structure, and the framework grooves are alternately distributed on two sides of the framework at intervals.
4. The skeletal photoelectric composite cable of claim 2, wherein: the supporting parts are arranged on the same straight line to form a supporting wall, the supporting wall is a side wall of the framework, the partition parts are arranged on one side face of the supporting arm, and the framework grooves are distributed on one side of the framework.
5. The skeletal photoelectric composite cable of claim 4, wherein: the supporting wall is arranged in the middle of the framework, a plurality of separating parts are arranged at the same positions on two sides of the supporting wall, the separating parts on two sides of the supporting wall are the same in length, and the framework grooves are symmetrically distributed on two sides of the framework.
6. The skeletal photoelectric composite cable of claim 4, wherein: the supporting wall is arranged in the middle of the framework, a plurality of partition parts are arranged at the same positions of two sides of the supporting wall, the partition parts arranged on the two sides of the supporting wall are different in length, and the framework grooves are different in length.
7. The skeletal photoelectric composite cable of claim 1, wherein: the frame groove is characterized in that a protruding step is arranged at the notch of the frame groove, the step is arranged on the inner side walls of the frame groove, the step is arranged on one inner side wall or correspondingly arranged on the two inner side walls, and the step semi-blocks the notch of the frame groove.
8. The skeletal photoelectric composite cable of claim 7, wherein: an inclined surface is arranged between the step and the inner side wall of the framework groove.
9. The skeletal type photoelectric composite cable according to claim 1, wherein: and sealing strips for plugging the notches are arranged at the notches of the framework grooves.
10. The skeletal photoelectric composite cable of claim 1, wherein: the flat framework is also coated with a water-resistant layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211689190.3A CN115938656A (en) | 2022-12-27 | 2022-12-27 | Skeleton type photoelectric composite cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211689190.3A CN115938656A (en) | 2022-12-27 | 2022-12-27 | Skeleton type photoelectric composite cable |
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| CN115938656A true CN115938656A (en) | 2023-04-07 |
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| CN202211689190.3A Pending CN115938656A (en) | 2022-12-27 | 2022-12-27 | Skeleton type photoelectric composite cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116609903A (en) * | 2023-07-17 | 2023-08-18 | 江苏永鼎股份有限公司 | Optical fiber ribbon cable with plug-in unit |
-
2022
- 2022-12-27 CN CN202211689190.3A patent/CN115938656A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116609903A (en) * | 2023-07-17 | 2023-08-18 | 江苏永鼎股份有限公司 | Optical fiber ribbon cable with plug-in unit |
| CN116609903B (en) * | 2023-07-17 | 2023-12-05 | 江苏永鼎股份有限公司 | Optical fiber ribbon cable with plug-in unit |
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