Ship-shore link photoelectric composite cable and manufacturing method therefor

Abstract

The present invention relates to the technical field of ship-shore link equipment. Provided are a ship-shore link photoelectric composite cable and a manufacturing method therefor. The ship-shore link photoelectric composite cable comprises power cores, a control core, a composite core, a backup core and a sheath layer, wherein a plurality of power cores are provided, and are twisted into a power harness; a plurality of grooves are provided in the peripheral wall of the power harness, and the control core, the composite core and the backup core are arranged in and corresponding to at least some of the grooves on a one-to-one basis; the composite core comprises an optical cable and a ground wire core that wraps the optical cable; and the backup core comprises at least one of the control core and the optical cable. In the present invention, a ground wire core and an optical cable are combined into a composite core, such that at least one of grooves of a plurality of power cores can be provided for arranging a backup core, which effectively solves the problem in the prior art of short service life of a shore connection cable due to lack of backup of both the control core and the optical cable.

Description

Ship-shore connecting optical-electric composite cable and manufacturing method thereof Technical Field

[0001] The present invention relates to the technical field of ship-shore connection equipment, and in particular to a ship-shore connection optoelectronic composite cable and a manufacturing method thereof. Background Art

[0002] In recent years, the national economy has continued to develop rapidly, the pace of port construction has accelerated, and the number of ships docked at ports has increased significantly. While ships are at port, they rely on the ship's fuel-fired auxiliary engines to generate electricity to meet the ship's power needs for maneuvering, communications, lighting, and other purposes. This consumes a lot of energy and emits large amounts of exhaust gases such as sulfur oxides, causing serious pollution to the environment around the port area. If the shore power system provided by the terminal is used to replace the ship's fuel-fired generators while the ship is at port, this pollution problem can be effectively solved. Shore power technology is an important measure to adapt to busy port operations, build green ports, and enhance the competitiveness of ports, and it has excellent social and environmental benefits. Ship-shore connection equipment refers to the cables and equipment that connect the shore connection point and the power receiving device on the ship.

[0003] Conventional shore power cables currently have their control core, communication unit (optical fiber), and ground wire located in the gaps between the three power lines. Neither the control core nor the optical fiber has a backup core, which can easily break over extended periods of operation. Once a break occurs, the shore power cable must be scrapped, resulting in unnecessary waste.

[0004] Summary of the Invention

[0005] The present invention provides a ship-shore connection optoelectronic composite cable and a manufacturing method thereof, which are used to solve the problem in the prior art that both the control core and the optical cable lack backup, resulting in a short service life of the shore power cable.

[0006] In a first aspect, the present invention provides a ship-to-shore connection optoelectronic composite cable, comprising: a power core, a control core, a composite core, a backup core, and a sheath layer;

[0007] The power core, the control core, the composite core and the backup core are all embedded in the sheath layer;

[0008] There are multiple power cores, and the multiple power cores are twisted into a power harness;

[0009] The peripheral wall of the power harness has a plurality of grooves, each of the grooves is formed between two adjacent power cores, and the control core, the composite core and the backup core are arranged in at least part of the plurality of grooves in a one-to-one correspondence;

[0010] The composite core includes an optical cable and a ground wire core, and the ground wire core wraps the optical cable;

[0011] The backup core includes at least one of a control core and an optical cable.

[0012] According to the ship-to-shore connection optoelectronic composite cable provided by the present invention, the ground wire core includes multiple strands of fiber bundles, and the multiple strands of the fiber bundles are twisted on the outside of the optical cable.

[0013] According to the ship-to-shore connection optoelectronic composite cable provided by the present invention, the ground wire core further includes a ground wire insulation layer, and the ground wire insulation layer is provided on the outside of the plurality of strands of the wire bundles.

[0014] According to the ship-to-shore connection optoelectronic composite cable provided by the present invention, the ship-to-shore connection optoelectronic composite cable further includes a first central reinforcement member, and the first central reinforcement member is provided between the three power cores.

[0015] According to the ship-to-shore connection optoelectronic composite cable provided by the present invention, the first central reinforcement member includes semi-conductive rubber and first aramid, and the semi-conductive rubber is wrapped around the outside of the first aramid.

[0016] According to the ship-to-shore connection optoelectronic composite cable provided by the present invention, the sheath layer comprises an inner sheath, a reinforcement layer and an outer sheath which are arranged in sequence from the inside to the outside.

[0017] According to the ship-to-shore connection optoelectronic composite cable provided by the present invention, the reinforcement layer includes a polyester braid and at least one second aramid, the second aramid is connected to the polyester braid, and the second aramid is located between the polyester braid and the inner sheath.

[0018] In a second aspect, the present invention provides a method for manufacturing any one of the above-mentioned ship-to-shore optical fiber composite cables, comprising:

[0019] preparing the composite core, the control core, the backup core, and the power core;

[0020] The control core, the composite core, the backup core, and the plurality of power cores are twisted together so that the plurality of power cores are adjacent to each other and form a power harness, and the control core, the composite core, and the backup core are arranged in a one-to-one correspondence in at least a portion of the groove on the peripheral wall of the power harness to obtain a first prefabricated cable;

[0021] The sheath layer is provided on the first prefabricated cable in an extruded form to obtain a ship-to-shore connection optoelectronic composite cable.

[0022] According to the method provided by the present invention, the step of preparing the composite core comprises:

[0023] preparing the optical cable and the multi-strand tow;

[0024] A plurality of strands of the filament bundles are twisted together on the outside of the optical cable to obtain the composite core.

[0025] According to the method provided by the present invention, the step of providing the sheath layer on the first prefabricated cable in an extruded form comprises:

[0026] Providing an inner sheath on the first prefabricated cable in an extruded form to obtain a second prefabricated cable;

[0027] providing a reinforcement layer on the outer side of the second prefabricated cable;

[0028] An outer sheath is arranged on the outer side of the reinforcement layer in an extruded form.

[0029] Technical Effects

[0030] The ship-shore connection optoelectronic composite cable of the present invention has the following beneficial effects compared with the prior art: by arranging the ground wire core on the outside of the optical cable, and the ground wire core and the optical cable together form a composite core, the ground wire core and the optical cable only need to occupy one groove space, so that at least one groove among the multiple grooves between the multiple power cores can be left for setting up a backup core, thereby providing a backup wire core for at least one of the control core and the optical cable, effectively solving the problem in the prior art that both the control core and the optical cable lack backup, resulting in a short service life of the shore power cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] 1 is a schematic structural diagram of a ship-to-shore optical fiber composite cable provided by an embodiment of the present invention;

[0033] FIG2 is a schematic structural diagram of a composite core provided in an embodiment of the present invention;

[0034] FIG3 is a schematic structural diagram of a control core provided by an embodiment of the present invention;

[0035] FIG4 is a schematic flow chart of a method for manufacturing a ship-to-shore connection optical-electric composite cable according to an embodiment of the present invention.

[0036] Figure markings: 1. Power core; 11. Power core conductor; 12. Power core conductor shielding layer; 13. Power core insulation layer; 14. Power core insulation shielding layer; 2. Control core; 21. Control core cable core; 211. Second center reinforcement; 212. Control wire; 2121. Control core conductor; 2122. Control core insulation layer; 22. Braided layer; 23. Isolation layer; 3. Composite core; 31. Optical cable; 311. Glass fiber rod; 312. Loose tube; 313. Optical cable sheath; 32. Ground wire core; 321. Fiber bundle; 322. Ground wire insulation layer; 4. Backup core; 5. Sheath layer; 51. Inner sheath; 52. Outer sheath; 6. First center reinforcement. DETAILED DESCRIPTION

[0037] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0038] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on the specific circumstances.

[0039] In the description of the embodiments of the present invention, it should be noted that the terms "center", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the embodiments of the present invention.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0041] 1 to 4 , the ship-to-shore connection optical-electric composite cable and its manufacturing method of the present invention will be described below.

[0042] As shown in Figures 1 to 3, an embodiment of the present invention provides a ship-shore connecting optoelectronic composite cable, including: a power core 1, a control core 2, a composite core 3, a backup core 4 and a sheath layer 5; the number of power cores 1 is multiple, and the multiple power cores 1 are twisted into a power harness; the power core 1, the control core 2, the composite core 3 and the backup core 4 are all embedded in the sheath layer 5, and the outer side of the power harness has a plurality of grooves, each groove is formed between two adjacent power cores 1, and the control core 2, the composite core 3 and the backup core 4 are arranged in at least part of the plurality of grooves in a one-to-one correspondence; the composite core 3 includes an optical cable 31 and a ground core 32, and the ground core 32 wraps the optical cable 31; the backup core 4 includes at least one of the control core 2 and the optical cable 31, and there can be multiple backup cores 4, and different backup cores 4 are arranged in different grooves. The backup core 4 can be either the control core 2 or the optical cable 31, but one backup core 4 can only be one of the control core 2 and the optical cable 31.

[0043] Specifically, the power core 1 is a transmission line core used to transmit electricity to ships. The number of power cores 1 can be three. Since the cross-section of the power core 1 is circular, when the three power cores 1 are twisted into a power harness, three grooves are formed on the peripheral wall of the harness, one between each of two adjacent power cores 1. The control core 2, composite core 3, and backup core 4 are arranged in a one-to-one correspondence within the three grooves, thereby fully utilizing the internal space of the ship-to-shore optoelectronic composite cable. The composite core 3 includes an optical cable 31 and a ground core 32, with the optical cable 31 used for communication transmission. The ground core 32 is wrapped around the outside of the optical cable 31, so that the optical cable 31 and the ground core 32 only need to occupy one of the above-mentioned grooves. The backup core 4 can be a spare core for the control core 2 or the optical cable 31. The sheath layer 5 is used to secure and protect the power core 1, control core 2, composite core 3, and backup core 4.

[0044] The ship-to-shore photoelectric composite cable of the present invention arranges the ground core 32 on the outside of the optical cable 31, and the ground core 32 and the optical cable 31 together form a composite core 3, so that the ground core 32 and the optical cable 31 only need to occupy one groove space, so that at least one groove among the multiple grooves between the multiple power cores 1 can be left for setting the backup core 4, thereby providing a backup core for at least one of the control core 2 and the optical cable 31, effectively solving the problem in the prior art that both the control core 2 and the optical cable 31 lack backup, resulting in a short service life of the shore power cable.

[0045] As shown in FIG. 1 , in some embodiments, the ship-to-shore optical-electric composite cable further includes a first central reinforcement member 6 , which is disposed between the three power cores 1 .

[0046] Specifically, the three power cores 1 are twisted into a bundle with a first central reinforcement member 6 as the center. The first central reinforcement member 6 is also located at the center of the ship-to-shore optical fiber composite cable. The provision of the first central reinforcement member 6 increases the structural strength of the ship-to-shore optical fiber composite cable and prevents breakage of the ship-to-shore optical fiber composite cable. The first central reinforcement member 6 comprises a semi-conductive rubber and a first aramid. The semi-conductive rubber is wrapped around the outside of the first aramid. Specifically, the semi-conductive rubber can be extruded from the outside of the first aramid using a rubber extruder to form the first central reinforcement member 6. The use of the rubber strip and the first aramid as the first central reinforcement member 6 not only increases the structural strength of the ship-to-shore optical fiber composite cable, but also enables the ship-to-shore optical fiber composite cable to maintain good flexibility.

[0047] As shown in FIG1 to FIG2, in some embodiments, the ground wire core 32 includes multiple strands of wire bundles 321 and a ground wire insulation layer 322. The multiple strands of wire bundles 321 are twisted on the outside of the optical cable 31, and the ground wire insulation layer 322 is provided on the outside of the multiple strands of wire bundles 321.

[0048] Specifically, tinned copper wires can be twisted to form multiple tinned copper wire bundles 321, specifically 12 or 18 strands. These multiple tinned copper wire bundles 321 are then twisted outside the optical cable 31, serving as the conductors of the existing ground wire core 32. A ground wire insulation layer 322 wraps around the multiple strands 321, providing protection and insulation.

[0049] In some embodiments, the sheath layer 5 includes an inner sheath 51, a reinforcement layer (not shown in the figure), and an outer sheath 52, which are arranged in sequence from the inside to the outside. The power core 1, the control core 2, the composite core 3, and the backup core 4 are all embedded in the inner sheath 51. The reinforcement layer is arranged between the inner sheath 51 and the outer sheath 52. By providing the reinforcement layer, the tensile strength of the ship-to-shore optical fiber composite cable can be increased to prevent breakage. The reinforcement layer includes a polyester braid and at least one second aramid fiber, the second aramid fiber is connected to the polyester braid, and the second aramid fiber is located between the polyester braid and the inner sheath. Polyester yarn and aramid have good tensile strength, small size, light weight, and are non-metallic materials. They are not affected by lightning weather. While increasing the tensile strength, the weight and diameter of the ship-to-shore optical fiber composite cable are basically not increased.

[0050] As shown in FIG4 , the present invention further provides a method for manufacturing the ship-to-shore optical fiber composite cable according to any of the above embodiments, comprising:

[0051] S100: Prepare composite core, control core, backup core and power core.

[0052] As shown in FIG. 1 and FIG. 2 , in some embodiments, the steps of preparing the composite core 3 are: preparing an optical cable 31 and a plurality of filament bundles 321 ; and then twisting the plurality of filament bundles 321 on the outside of the optical cable 31 to obtain the composite core 3 .

[0053] Specifically, optical cable 31 can be the grease-filled non-metallic layer twisted center reinforcement optical cable 31, optical cable 31 centers adopt glass fiber rod 311 to strengthen, 6 loose tubes 312 are twisted with glass fiber rod 311 as the center, adding specification is the aramid fiber of 3160dtex twisted together to increase optical cable 31 tensile properties when twisting, specification is that the aramid fiber of 3160dtex is positioned in the middle of the gap between loose tube 312 and loose tube 312; Optical fiber is provided with in the loose tube 312, adopts grease to fill to carry out waterproofing in the loose tube 312. The outer layer of optical cable 31 is cable sheath 313, and the material of cable sheath 313 is natural styrene butadiene sulfide, specifically can be squeezed out natural styrene butadiene sulfide by rubber extruder, when rubber extruder screw temperature reaches 50-80 ℃, start to squeeze out natural styrene butadiene sulfide, make natural styrene butadiene sulfide be coated on the loose tube 312 evenly and continuously by forming die, and by applying talcum powder and water tank cooling, namely obtain optical cable 31. After being completely cooled, the optical cable 31 needs to be vulcanized. Specifically, the optical cable 31 is placed in a vulcanization tank for low-temperature vulcanization, which will not damage the optical cable 31. The vulcanization pressure is 0.3-0.4 MPa, and the vulcanization time is 20-40 minutes.

[0054] After obtaining the vulcanized optical cable 31, multiple filament bundles 321 are twisted onto the outside of the optical cable 31. A layer of semi-conductive insulation material is then evenly extruded onto the filament bundles 321 using an extruder to form the ground wire insulation layer 322. When the extruder screw temperature reaches 60-80°C, the semi-conductive insulation material begins to be extruded. The material is then passed through a forming die to uniformly and continuously coat the filament bundles 321. The composite core 3 is then air-cooled, resulting in the composite core 3. Finally, the composite core 3 is vulcanized in an autoclave at a pressure of 0.3-0.4 MPa for 20-40 minutes.

[0055] The wire bundle 321 is formed by bundling a plurality of tinned copper wires, the bundling direction of the tinned copper wires is left-handed, and the bundled pitch diameter ratio is 14-17 times; the twisting direction of the wire bundle 321 is right-handed.

[0056] As shown in Figures 1 and 3, in some embodiments, the control core 2 includes a control core cable 21, a braided layer 22, and an isolation layer 23. The control core cable 21 includes a second central reinforcement member 211 and multiple control wires 212. The control wires 212 include a control core conductor 2121 and a control core insulation layer 2122. The control core conductor 2121 utilizes a tinned Category V flex-resistant tinned copper conductor. The control core conductor 2121 is composed of multiple bundled monofilaments with a nominal monofilament diameter of 0.15-0.25 mm. The monofilament strands are bundled in a left-hand direction, with a bundled pitch-to-diameter ratio of 14-17. The control core insulation layer 2122 is produced using a fluoroplastic extruder. When the internal barrel temperature of the extruder reaches 340°C-380°C, the fluoroplastic is added to the hopper. The control core insulation layer 2122 is uniformly and continuously coated on the control core conductor 2121 using the thrust of the fluoroplastic extruder's screw and through a forming die. The control core insulation layer 2122 is then cooled and formed.

[0057] Compared to conventional EPDM, fluoroplastics offer superior insulation at the same voltage level. Using fluoroplastics as the control core insulation layer 2122 allows for a thinner thickness, leaving more space inside for the control core conductor 2121 and reducing the outer diameter of the control core 2. Using fluoroplastics also addresses the issues of EPDM, which can easily cause adhesion, deformation, and breakdown when the material is not fully vulcanized.

[0058] The thickness of the control core insulation layer 2122 is 0.35 mm to 0.45 mm. During the extrusion process of the control core insulation layer 2122 , the thickness, outer diameter and surface quality of the control core insulation layer 2122 can be monitored by a high-precision deflectometer and a concavoconvexometer.

[0059] Furthermore, the control cables 212 may be six in number, twisted together around the second central reinforcement member 211, with a right-hand direction and a pitch-to-diameter ratio of 8-10. The second central reinforcement member 211 is made of the same material as the first central reinforcement member 6. A braided layer 22 is wrapped around the control cable core 21, with the overlapped portion of the braided layer 22 no greater than 30%. The braiding is done using tinned copper wire with a nominal diameter of 0.15 mm and a braid density of no less than 80%. After braiding, an insulating layer 23 is then wrapped around the control cable core 21, with the overlapped portion of the insulating layer 23 no greater than 30%. The insulating layer 23 may be made of an insulating material such as a high-temperature polyester tape or non-woven fabric.

[0060] As shown in FIG1 , in some embodiments, the power core 1 includes a power core conductor 11, a power core conductor shield 12, a power core insulation layer 13, and a power core insulation shield 14, arranged sequentially from the inside out. The conductor is a tinned Class V flex-resistant tinned copper conductor. The power core conductor 11 is formed by twisting multiple strands of monofilaments. The nominal diameter of the monofilaments is 0.25-0.50 mm. Monofilaments with a breaking elongation of not less than 20% are selected and twisted in a regular (1+6+12+18) pattern. The monofilament strands are bundled in the left direction, with a bundled pitch-diameter ratio of 14-17 times. The re-twisting direction when twisting the multiple monofilament strands is right-handed, with a re-twisting pitch-diameter ratio of no more than 10 times. The (1+6+12+18) pattern means that the multiple monofilament strands are divided into a multi-layer structure, with the number of monofilament strands from the inside out being 1, 6, 12, and 18, respectively.

[0061] The power core conductor shielding layer 12, power core insulation layer 13, and power core insulation shielding layer 14 are all extruded through a rubber extruder. Both the power core conductor shielding layer 12 and the power core insulation shielding layer 14 utilize semi-conductive insulation materials, while the power core insulation layer 13 utilizes medium-voltage EPDM insulation materials. The processing temperatures for the power core conductor shielding layer 12, the power core insulation layer 13, and the power core insulation shielding layer 14 are 80-110°C, 55-85°C, and 70-100°C, respectively. The power core insulation layer 13 also undergoes vulcanization at a vulcanization pressure of 0.8 MPa to 1.0 MPa.

[0062] The backup core 4 is a backup of the control core 2 or the optical cable 31 , and the preparation method of the backup core 4 is consistent with the preparation method of its corresponding control core 2 or the optical cable 31 .

[0063] S200: Twisting the control core, the composite core, the backup core and the multiple power cores so that the multiple power cores are adjacent to each other and form a power harness, and the control core, the composite core and the backup core are correspondingly arranged in at least a portion of the groove on the peripheral wall of the power harness to obtain a first prefabricated cable.

[0064] Specifically, a cable is twisted together using a winch, with the control core 2, composite core 3, backup core 4, and power core 1 centered around the first central reinforcement member 6. The twisting direction is left-handed, and the pitch-to-diameter ratio is no greater than 9. The twisting process involves the winding and payout of each cable (control core 2, composite core 3, backup core 4, and power core 1). The tension of each cable is adjusted during winding and payout to ensure uniform payout tension during the twisting process. The tension of the optical cable 31 is no greater than 300N to prevent damage to the cable 31.

[0065] S300: providing a sheath layer on the first prefabricated cable in an extruded form to obtain a ship-to-shore connection optoelectronic composite cable.

[0066] In some embodiments, the step of providing the jacket layer 5 on the first prefabricated cable comprises:

[0067] An inner sheath 51 is provided on the first prefabricated cable in an extruded form to obtain a second prefabricated cable.

[0068] A reinforcement layer is provided on the outer side of the second prefabricated cable.

[0069] An outer sheath 52 is provided on the outer side of the reinforcement layer in an extruded form.

[0070] Specifically, the inner sheath 51 is made of chloroprene rubber, which can be extruded by a rubber extrusion and vulcanization unit. When the screw temperature of the rubber extrusion and vulcanization unit reaches 60-90°C, extrusion begins, and then the chloroprene rubber is evenly coated on the first prefabricated cable through a shaping die. The extrusion of the inner sheath 51 should follow the principle of being tight and strong. After the inner sheath 51 is formed, it is vulcanized at a vulcanization pressure of 1.0-1.2 MPa.

[0071] The reinforcement layer can be composed of a polyester braided piece woven from polyester yarn with a specification of 6600dtex and eight second aramid fibers with a specification of 3160dtex. The polyester braided piece can be woven using a 36-spindle braiding machine. The eight second aramid fibers are parallel to each other and arranged at intervals from each other. The eight second aramid fibers are arranged between the polyester braided piece and the inner sheath 51, and the eight second aramid fibers are all connected to the polyester braided piece. The second aramid fiber can increase the tensile strength of the polyester braided piece, and thereby increase the longitudinal tensile strength of the ship-to-shore connecting optoelectronic composite cable.

[0072] The material and preparation method of the outer sheath 52 are consistent with those of the inner sheath 51 .

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A ship-to-shore optical-electric composite cable, characterized in that: include: Power core, control core, composite core, backup core and sheath layer; The power core, the control core, the composite core and the backup core are all embedded in the sheath layer; There are multiple power cores, and the multiple power cores are twisted into a power harness; The peripheral wall of the power harness has a plurality of grooves, each of which is formed between two adjacent power cores, and the control core, the composite core and the backup core are arranged in at least part of the plurality of grooves in a one-to-one correspondence; The composite core comprises an optical cable and a ground wire core, wherein the ground wire core wraps the optical cable; The backup core includes at least one of a control core and an optical cable.

2. The ship-to-shore connection optical-electric composite cable according to claim 1, characterized in that: The ground wire core includes a plurality of strands of wire bundles, and the plurality of strands of the wire bundles are twisted on the outside of the optical cable.

3. The ship-to-shore connection optical-electric composite cable according to claim 2, characterized in that: The ground wire core also includes a ground wire insulation layer, and the ground wire insulation layer is arranged on the outside of the plurality of wire bundles.

4. The ship-to-shore connection optical-electric composite cable according to claim 1, characterized in that: The ship-to-shore connection optoelectronic composite cable further comprises a first central reinforcement member, and the first central reinforcement member is arranged between the three power cores.

5. The ship-to-shore connection optical-electric composite cable according to claim 4, characterized in that: The first central reinforcement member includes semi-conductive rubber and first aramid fiber, and the semi-conductive rubber is wrapped around the outer side of the first aramid fiber.

6. The ship-to-shore connection optical-electric composite cable according to claim 1, characterized in that: The sheath layer comprises an inner sheath, a reinforcement layer and an outer sheath which are arranged in sequence from the inside to the outside.

7. The ship-to-shore connection optical-electric composite cable according to claim 6, characterized in that: The reinforcing layer includes a polyester braid and at least one second aramid fiber, wherein the second aramid fiber is connected to the polyester braid and is located between the polyester braid and the inner sheath.

8. A method for manufacturing the ship-to-shore connection optical-electric composite cable according to claim 1, characterized in that: include: preparing the composite core, the control core, the backup core and the power core; The control core, the composite core, the backup core and the plurality of power cores are twisted together so that the plurality of power cores are adjacent to each other and form a power harness, and the control core, the composite core and the backup core are arranged one by one in at least a portion of the groove on the peripheral wall of the power harness to obtain a first prefabricated cable; The sheath layer is provided on the first prefabricated cable in the form of an extruded package to obtain a ship-to-shore connecting optoelectronic composite cable.

9. The method according to claim 8, characterized in that The step of preparing the composite core comprises: preparing the optical cable and the multi-strand tow; A plurality of strands of the filament bundles are twisted together on the outside of the optical cable to obtain the composite core.

10. The method according to claim 8, characterized in that The step of providing the sheath layer on the first prefabricated cable in the form of an extruded package comprises: Providing an inner sheath on the first prefabricated cable in the form of an extruded package to obtain a second prefabricated cable; Disposing a reinforcement layer on the outer side of the second prefabricated cable; An outer sheath is arranged on the outer side of the reinforcement layer in the form of an extruded package.

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