Optical-electrical composite cable

Abstract

The utility model belongs to cable field, propose a kind of photoelectric composite cable, including power cable unit, optical cable unit, filling layer, wrapping layer, insulating layer, semiconductive layer, metal shielding layer, extruded inner sheath, aluminium alloy sheath and outer sheath, power cable unit includes 1 in center center power cable unit and five lateral power cable units, optical cable unit is arranged between two lateral power cable units, the outside of optical cable unit is provided with semi-surrounding type telescopic sheath, telescopic sheath includes C-shaped portion and buffer portion, buffer portion is curved and extends to the outer peripheral surface of two lateral power cable units, wrapping layer includes inner wrapping layer and outer wrapping layer, and outer tooth convex surface and inner tooth convex surface with tension gap are provided between the outer surface of inner wrapping layer and the inner surface of outer wrapping layer.The utility model design is reasonable, is favorable to the protection optical cable unit and is favorable to the extension cable practical service life, is suitable for large-scale popularization.

Description

Technical Field

[0001] This utility model belongs to the field of cables, and in particular relates to an optoelectronic composite cable. Background Technology

[0002] Optoelectronic composite cables combine power transmission with optical signal transmission. Because they integrate both power cable cores and optical fiber units, the power cable cores typically have a larger diameter and a greater number than the optical fiber cores. For example, the fire-resistant optoelectronic composite cable disclosed in Chinese utility model patent CN203397757U exhibits a significant difference in the distribution ratio of the power cable cores to the optical fiber cores within the cable. Therefore, this difference must be balanced in the structural design; otherwise, it will affect the actual service life of the optical fiber. Utility Model Content

[0003] This utility model addresses the technical problems existing in the aforementioned optoelectronic composite cables by proposing an optoelectronic composite cable with a reasonable design that is beneficial for protecting the optical cable unit and extending the actual service life of the cable.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a photoelectric composite cable, including a power cable unit, an optical cable unit, and a filling layer between the power cable unit and the optical cable unit. The outer side of the filling layer is provided with a wrapping layer, an insulation layer, a semi-conductive layer, a metal shielding layer, an extruded inner sheath, an aluminum alloy sheath, and an outer sheath. The power cable unit includes one central power cable unit located in the center and five side power cable units evenly distributed outside the central power cable unit. The optical cable unit is disposed between two of the side power cable units and distributed close to the wrapping layer. The outer side of the optical cable unit is provided with a semi-enclosed telescopic sheath. The telescopic sheath includes a C-shaped portion, and two buffer portions are provided on the side of the C-shaped portion. The buffer portions bend and extend towards the outer peripheral surface of the two side power cable units. The wrapping layer includes an inner wrapping layer and an outer wrapping layer. An outer toothed convex surface and an inner toothed convex surface with a tension gap are provided between the outer surface of the inner wrapping layer and the inner surface of the outer wrapping layer.

[0005] Preferably, the telescopic sheath has several telescopic grooves evenly distributed along its length on the side facing away from the optical cable unit, with both ends of the telescopic grooves extending toward the edge of the buffer section.

[0006] Preferably, the buffer section has a herringbone-shaped hollow buffer section inside.

[0007] Preferably, the diameter of the central power cable unit is smaller than the diameter of the side power cable units.

[0008] Preferably, the interior of the filling layer is filled with glass fiber rope.

[0009] Compared with the prior art, the advantages and positive effects of this utility model are as follows: This utility model provides a photoelectric composite cable. By employing a telescopic sheath, the compressive force exerted on the optical cable unit by the power cable unit is buffered, thus ensuring the physical performance of the optical cable unit. The wrapping layer with tension gaps provides appropriate buffering space for both the encased power cable unit and the optical cable unit, improving the cable's resilience to a certain extent. This utility model is rationally designed, protects the optical cable unit, and extends the cable's actual service life, making it suitable for large-scale promotion. Attached Figure Description

[0010] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 A cross-sectional view of an optoelectronic composite cable provided for an embodiment; Figure 2 An unfolded view of the telescopic sheath provided in the embodiment; In the above figures: 1. Power cable unit; 1a. Central power cable unit; 1b. Side power cable unit; 2. Optical cable unit; 3. Filler layer; 4. Wrapping layer; 4a. Inner sheath; 4b. Outer sheath; 4c. External toothed convex surface; 4d. Internal toothed convex surface; 5. Insulation layer; 6. Semi-conductive layer; 7. Metal shielding layer; 8. Extruded inner sheath; 9. Aluminum alloy sheath; 10. Outer sheath; 11. Telescopic sheath; 11a. C-shaped part; 11b. Buffer part; 11c. Telescopic groove; 11d. Buffer hollow part. Detailed Implementation

[0012] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0013] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0014] Examples, such as Figure 1 and Figure 2 As shown, this utility model provides a photoelectric composite cable, including a power cable unit 1, an optical cable unit 2, and a filling layer 3 between the power cable unit 1 and the optical cable unit 2. The outer side of the filling layer 3 is provided with a wrapping layer 4, an insulation layer 5, a semi-conductive layer 6, a metal shielding layer 7, an extruded inner sheath 8, an aluminum alloy sheath 9, and an outer sheath 10. The insulation layer 5, the semi-conductive layer 6, and the metal shielding layer 7 provide the cable with basic insulation and shielding properties. The aluminum alloy sheath 9, as an armor layer, improves the cable's compressive strength, tensile strength, and insect resistance. The outer sheath 10 provides external protection, ensuring the cable has basic abrasion resistance, flame retardancy, heat resistance, and a certain degree of water resistance. Based on this, the power cable unit 1 provided by this utility model includes a central power cable unit 1a located in the center and five side power cable units 1b evenly distributed outside the central power cable unit 1a. The optical cable unit 2 is disposed between two of the side power cable units 1b and distributed close to the wrapping layer 4. The optical cable unit 2 is provided with a semi-enclosed telescopic sheath 11. The telescopic sheath 11 includes a C-shaped part 11a. Two buffer parts 11b are provided on the side of the C-shaped part 11a. The cross-section of the buffer part 11b is triangular, and the side of the triangle is curved. The buffer part 11b bends and extends towards the outer peripheral surface of the two side power cable units 1b. The wrapping layer 4 includes an inner wrapping layer 4a and an outer wrapping layer 4b. An outer toothed convex surface 4c and an inner toothed convex surface 4d with a tension gap are provided between the outer surface of the inner wrapping layer 4a and the inner surface of the outer wrapping layer 4b.

[0015] Specifically, the central power cable unit 1a and the other five side power cable units 1b, through their overall positional relationship, can form a relatively stable mutual squeezing pressure, which facilitates wrapping and helps reduce the filling gap of the filler layer 3. The optical cable unit 2 forms a pressure buffer outer garment through the semi-enclosed telescopic sheath 11. In particular, the buffer part 11b can effectively prevent strong compression at the location of the optical cable unit 2, buffering the squeezing force from the power cable unit 1 on the optical cable unit 2, which helps to ensure the physical properties of the optical cable unit 2 and prevents the optical cable unit 2 from experiencing large-scale torsion. This helps to protect the optical cable unit 2 and extend the actual service life of the cable. Furthermore, the wrapping layer 4 with tension gap in this utility model can provide an appropriate buffer gap for the power cable unit 1 and optical cable unit 2 it wraps, which can improve the toughness of the optoelectronic composite cable to a certain extent.

[0016] To improve the protective performance of the telescopic sheath 11 for the optical cable unit 2, the telescopic sheath 11 provided by this utility model has a plurality of telescopic grooves 11c evenly distributed along its length on the side facing away from the optical cable unit 2, with both ends of the telescopic grooves 11c extending toward the edge of the buffer part 11b. By setting the telescopic grooves 11c, the telescopic sheath 11 can have a certain degree of bending toughness, allowing the optical cable unit 2 to adapt to the overall laying curve of the cable, while the two side power cable units 1b that constitute its installation gap will not be excessively compressed, which is beneficial to protecting the optical cable unit 2.

[0017] Furthermore, the buffer part 11b provided by this utility model is provided with a herringbone-shaped buffer hollow part 11d inside. The buffer hollow part 11d can generate corresponding compression deformation with the change of pressure. At the same time as it undergoes compression deformation, the triangular surface of the buffer part 11b will deform to different degrees, thereby preventing the optical cable unit 2 from shifting significantly from its predetermined installation position.

[0018] To improve the stability of the internal structure of the cable, the diameter of the central power cable unit 1a provided by this utility model is smaller than the diameter of the side power cable unit 1b. This allows the side power cable unit 1b to have a better centripetal tendency under the action of the outer layers of wrapping, which can further protect the optical cable unit 2.

[0019] To improve the tensile strength of this cable, the present invention fills the interior of the filling layer 3 with glass fiber rope. Glass fiber rope has good mechanical properties, such as high strength and high wear resistance, and also has good electrical insulation.

[0020] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A photoelectric composite cable, comprising a power cable unit, an optical cable unit, and a filler layer between the power cable unit and the optical cable unit, wherein the filler layer is provided with a wrapping layer, an insulation layer, a semi-conductive layer, a metal shielding layer, an extruded inner sheath, an aluminum alloy sheath, and an outer sheath, characterized in that, The power cable unit includes a central power cable unit and five side power cable units evenly distributed outside the central power cable unit. The optical cable unit is located between two of the side power cable units and close to the wrapping layer. The optical cable unit is provided with a semi-enclosed telescopic sheath. The telescopic sheath includes a C-shaped part. The side of the C-shaped part is provided with two buffer parts. The buffer parts bend and extend towards the outer peripheral surface of the two side power cable units. The wrapping layer includes an inner wrapping layer and an outer wrapping layer. An outer toothed convex surface and an inner toothed convex surface with a tension gap are provided between the outer surface of the inner wrapping layer and the inner surface of the outer wrapping layer.

2. The optoelectronic composite cable according to claim 1, characterized in that, The telescopic sheath has several telescopic grooves evenly distributed along its length on the side facing away from the optical cable unit, with both ends of the telescopic grooves extending toward the edge of the buffer section.

3. The optoelectronic composite cable according to claim 2, characterized in that, The buffer section has a herringbone-shaped hollow buffer section inside.

4. The optoelectronic composite cable according to claim 3, characterized in that, The diameter of the central power cable unit is smaller than the diameter of the side power cable units.

5. The optoelectronic composite cable according to claim 4, characterized in that, The interior of the filling layer is filled with fiberglass rope.

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