Carbon fiber cable and method of manufacturing the same

Abstract

The application discloses a carbon fiber cable and a manufacturing method thereof, the cable body is composed of a plurality of round cornered regular hexagonal section carbon fiber rods which are densely arranged and matched to form a hexagonal or a notched hexagonal section, compared with the round section carbon fiber rods, the contact area between the plurality of round cornered regular hexagonal section carbon fiber rods is significantly increased, the extrusion stress of the contact position of the carbon fiber rods when the cable body bears transverse extrusion is reduced, the transverse stress performance of the cable body is improved, the setting cavities which accommodate the round section carbon fiber rods are formed at the center positions of the sections of the plurality of round cornered regular hexagonal section carbon fiber rods, so that the round section carbon fiber rods can be installed into the setting cavities after the setting cavities are formed by the bundling of the plurality of round cornered regular hexagonal section carbon fiber rods, synchronous bundling with the plurality of round cornered regular hexagonal section carbon fiber rods is avoided, the optical fiber sensors in the round section carbon fiber rods will not be damaged by extrusion, and the production efficiency and the survival rate of the optical fiber sensors are improved.

Description

Technical Field

[0001] This invention relates to the field of civil engineering technology, and specifically to carbon fiber cables. Background Technology

[0002] Carbon fiber reinforced polymer (CFRP) has extremely high tensile strength. When used in the form of cables in structures, it can fully utilize its tensile strength and can serve as the main tension member in large-span spatial structures (such as cable net structures and tensioned structures). However, CFRP is a typical anisotropic material with very high longitudinal tensile strength, but poor transverse compressive and shear strength. Therefore, CFRP cables have poor transverse load-bearing performance.

[0003] Carbon fiber cables typically come in two structural forms: parallel bar cables and parallel plate cables. Parallel plate cables are composed of multiple layers of sheet-like carbon fiber plates, as shown in the cable disclosed in Chinese patent application CN 108004926 A. Existing carbon fiber parallel bar cables usually consist of several circular cross-section carbon fiber rods arranged in hexagonal or hexagonal bundles with missing corners to maximize the axial tensile strength of the carbon fiber composite material. However, the contact area between the circular cross-section carbon fiber rods is very small, resulting in poor performance under lateral compression.

[0004] Since the cross-sectional shape of the carbon fiber rod is related to the performance of the cable and the anchoring method, changing the cross-section of the carbon fiber rod will change the performance of the cable and the anchoring method accordingly. Therefore, in the prior art, a circular carbon fiber rod with a circular cross-section is usually not replaced with a carbon fiber rod with a polygonal cross-section.

[0005] Furthermore, intelligent carbon fiber cables are cables that combine carbon fiber cables with intelligent sensing technology, primarily used to monitor and evaluate parameters such as stress, strain, and temperature. The intelligent ribs in intelligent carbon fiber cables consist of fiber optic sensors embedded within carbon fiber rods, while the non-intelligent ribs are made of conventional carbon fiber rods. Current intelligent carbon fiber cables typically bundle the intelligent and non-intelligent ribs together simultaneously. However, with the fiber optic sensors embedded in the intelligent ribs, the manufacturing of intelligent carbon fiber cables is limited by the size of the intelligent ribs, resulting in lower production efficiency. Moreover, during the simultaneous bundling of intelligent and non-intelligent ribs, the internal fiber optic sensors are easily damaged by compression, leading to a low survival rate and higher manufacturing costs.

[0006] Therefore, how to effectively improve the lateral stress performance of carbon fiber parallel rods and cables, while improving the production efficiency of intelligent carbon fiber cables and the survival rate of fiber optic sensors, has become an urgent problem to be solved in this field. Summary of the Invention

[0007] To address the shortcomings of existing technologies, the purpose of this invention is to provide a carbon fiber cable with good lateral stress performance, high production efficiency, and high fiber optic sensor survival rate, as well as a method for manufacturing the same.

[0008] To achieve the above objectives, the present invention provides a carbon fiber cable comprising a cable body and a covering layer disposed on the outer side of the cable body.

[0009] The cable body comprises a circular cross-section carbon fiber rod and several rounded hexagonal cross-section carbon fiber rods. The several rounded hexagonal cross-section carbon fiber rods are densely arranged to form a hexagonal or hexagonal cross-section with missing corners, and a cavity is formed at the center of the cross-section to accommodate the circular cross-section carbon fiber rod.

[0010] The cladding layer is disposed on the outside of the carbon fiber rod with a rounded hexagonal cross-section.

[0011] Furthermore, the radius of the inscribed circle of the rounded hexagonal carbon fiber rod is r1, and the adjacent sides are smoothly transitioned by arcs. The radius of the circular carbon fiber rod is r0, and r0 is less than r1.

[0012] Furthermore, the covering layer includes one or more of wrapping tape, flame-retardant insulating tape, and PE protective sleeve.

[0013] Furthermore, the wrapping tape covers the outside of the carbon fiber rod with rounded corners and a regular hexagonal cross section, the flame-retardant insulating tape covers the outside of the wrapping tape, and the PE protective sleeve covers the outside of the flame-retardant insulating tape.

[0014] Furthermore, a filler is provided in the gap between the rounded hexagonal cross-section carbon fiber rod and the cladding layer.

[0015] Furthermore, the filler is disposed in the transverse stress-bearing section of the cable.

[0016] Furthermore, an optical fiber sensor is provided in the circular cross-section carbon fiber rod.

[0017] To achieve the above objectives, the present invention provides a method for manufacturing carbon fiber cables, based on the aforementioned carbon fiber cables, the manufacturing method comprising:

[0018] First, a circular cross-section carbon fiber rod is placed. Then, several rounded hexagonal cross-section carbon fiber rods are distributed around the circumference of the circular cross-section carbon fiber rod. These rounded hexagonal cross-section carbon fiber rods are then densely arranged to form a hexagonal or hexagonal cross-section with missing corners.

[0019] The cladding layer is wrapped around the outside of several carbon fiber rods with rounded hexagonal cross sections.

[0020] Furthermore, the manufacturing method further includes:

[0021] First, several rounded hexagonal cross-section carbon fiber rods are densely arranged to form a hexagonal or hexagonal cross-section with missing corners, and a cavity is formed at the center of the cross-section. Then, a circular cross-section carbon fiber rod is placed in the cavity.

[0022] The cladding layer is wrapped around the outside of several carbon fiber rods with rounded hexagonal cross sections.

[0023] Furthermore, the gap between the rounded hexagonal cross-section carbon fiber rod and the cladding layer is filled with filler.

[0024] The carbon fiber cable and its manufacturing method provided by this invention use a number of rounded hexagonal cross-section carbon fiber rods densely arranged to form a hexagonal or hexagonal cross-section. Compared with circular cross-section carbon fiber rods, the contact area between the rounded hexagonal cross-section carbon fiber rods is significantly increased, which can significantly reduce the compressive stress at the contact points of the carbon fiber rods when the cable is subjected to lateral compression, thereby improving the cable's performance under lateral compression. At the same time, the dense arrangement of rounded hexagonal cross-section carbon fiber rods can form a larger effective cross-sectional area, which can provide greater load-bearing capacity, thereby improving the lateral force performance of the carbon fiber cable.

[0025] Meanwhile, a placement cavity is formed at the center of the cross-section of several rounded hexagonal carbon fiber rods to accommodate circular carbon fiber rods. This allows the circular carbon fiber rods to be installed into the placement cavity after the several rounded hexagonal carbon fiber rods are bundled together, avoiding simultaneous bundling with the several rounded hexagonal carbon fiber rods. For circular carbon fiber rods equipped with fiber optic sensors, the internal fiber optic sensors will not be squeezed and damaged, improving production efficiency and the survival rate of fiber optic sensors.

[0026] In addition, the center of the carbon fiber cable uses a circular cross-section carbon fiber rod, which allows several rounded hexagonal cross-section carbon fiber rods to twist around the circular cross-section carbon fiber rod without twisting the circular cross-section carbon fiber rod, thus ensuring the strength and forming quality of the cable. Attached Figure Description

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0028] Figure 1 This is a schematic diagram of the structure of a carbon fiber cable according to an embodiment of the present invention;

[0029] Figure 2 This is a schematic diagram of the carbon fiber rod with a rounded hexagonal cross-section in this invention;

[0030] Figure 3 This is a schematic diagram of the structure of the circular cross-section carbon fiber rod in this invention;

[0031] Figure 4 A schematic diagram of the structure of a second embodiment of the carbon fiber cable provided by the present invention;

[0032] Figure 5 A schematic diagram of the structure of the carbon fiber cable provided by the present invention in Embodiment 3;

[0033] Figure 6a and Figure 6b This invention provides an analysis of the stress performance of cables based on carbon fiber rods with different cross-sections.

[0034] Figure label:

[0035] 100. Cable body; 110. Circular cross-section carbon fiber rod; 120. Rounded hexagonal cross-section carbon fiber rod; 130. Housing cavity;

[0036] 200. Covering layer; 210. Wrapping tape; 220. Flame-retardant insulating tape; 230. PE protective sleeve;

[0037] 300. Filler; 400. Fiber optic sensor. Detailed Implementation

[0038] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below with reference to specific illustrations.

[0039] Example 1

[0040] See Figure 1 The image shows an example of a carbon fiber cable provided by the present invention.

[0041] As shown in the figure, the carbon fiber cable in this example mainly includes a cable body 100 and a covering layer 200 disposed on the outside of the cable body 100.

[0042] The cable body 100 includes a circular cross-section carbon fiber rod 110 and several rounded hexagonal cross-section carbon fiber rods 120. The several rounded hexagonal cross-section carbon fiber rods 120 are densely arranged to form a hexagonal or hexagonal cross-section with missing corners. At the center of the cross-section, a cavity 130 is formed to accommodate the circular cross-section carbon fiber rod 110. The contact area between the several rounded hexagonal cross-section carbon fiber rods 120 is large, which can effectively improve the performance of the cable body 100 in resisting lateral compression. At the same time, the circular cross-section carbon fiber rod 110 can be installed into the cavity 130 later to avoid synchronous bundling with the rounded hexagonal cross-section carbon fiber rods 120, thereby improving production efficiency and the survival rate of the fiber optic sensor 140 inside the circular cross-section carbon fiber rod 110.

[0043] Furthermore, the cladding layer 200 is disposed on the outside of the carbon fiber rod 120 with a rounded hexagonal cross-section and forms a regular hexagonal cross-section to protect the cable body 100.

[0044] Combination Figure 2 In order to enable the circular cross-section carbon fiber rod 110 and the rounded hexagonal cross-section carbon fiber rod 120 to cooperate with each other and improve the lateral force performance of the cable body 100, the radius of the inscribed circle of the rounded hexagonal cross-section carbon fiber rod 120 is r1, and the adjacent sides of the rounded hexagonal cross-section carbon fiber rod 120 are smoothly transitioned by arcs. Preferably, the smooth transition is achieved by arcs with a radius of r1 / 2, so that the rounded hexagonal cross-section carbon fiber rod 120 has torsional performance closer to that of the circular cross-section carbon fiber rod.

[0045] Meanwhile, the rounded corners of the carbon fiber rod 120 with a regular hexagonal cross-section form smooth rounded corners, which can effectively improve the molding quality of a single rounded corner carbon fiber rod 120 and avoid the problem of easy breakage of the corner fibers of the rounded corner carbon fiber rod 120.

[0046] Combined Figure 1 The resulting carbon fiber rods 120 with rounded hexagonal cross-sections can be closely arranged together, and only a small gap is formed between three adjacent carbon fiber rods 120 with rounded hexagonal cross-sections. Compared with carbon fiber rods with circular cross-sections, carbon fiber rods 120 with rounded hexagonal cross-sections can significantly increase the contact area, thereby reducing the compressive stress at the contact position of the carbon fiber rods when the cable body 100 is subjected to lateral compression, and effectively improving the performance of the cable body 100 in resisting lateral compression.

[0047] Furthermore, compared to a cable body using carbon fiber rods with circular cross-sections, a cable body 100 composed of several carbon fiber rods with rounded hexagonal cross-sections 120 has a larger effective cross-sectional area under the same cable body outer diameter, so that the cable body 100 can provide greater load-bearing capacity, thereby improving the lateral force performance of the cable body 100.

[0048] Meanwhile, since a certain gap will be formed between the three adjacent rounded hexagonal cross-section carbon fiber rods 120, and with the smooth transition of the rounded hexagonal cross-section carbon fiber rods 120, the cable body 100 as a whole can be twisted to a certain extent, thereby ensuring that the cable body 100 has better coiling performance.

[0049] In order to cooperate with the circular cross-section carbon fiber rod 110, several rounded hexagonal cross-section carbon fiber rods 120 are fitted together to form a hexagonal or hexagonal cross-section with missing corners. Preferably, a hexagonal cross-section is formed so that the cable body 100 can be easily manufactured and formed, and a placement cavity 130 is formed at the center of the cross-section to accommodate the circular cross-section carbon fiber rod 110 therein.

[0050] Specifically, in combination Figure 3 The radius of the circular cross-section carbon fiber rod 110 is r0, and r0 is smaller than the radius r1 of the inscribed circle of the rounded hexagonal cross-section carbon fiber rod 120. This allows the circular cross-section carbon fiber rod 110 to be placed in the placement cavity 130 with a certain gap between it and the surrounding rounded hexagonal cross-section carbon fiber rods 120. When the cable body 100 is subjected to lateral compressive force, the circular cross-section carbon fiber rod 110 at the center position does not come into contact with the surrounding rounded hexagonal cross-section carbon fiber rods 120, and no excessive compressive force is formed, thereby ensuring the lateral force safety of the cable body 100.

[0051] Furthermore, the circular cross-section carbon fiber rod 110 at the center can be installed into or removed from the mounting cavity 130 after several circular cross-section carbon fiber rods 110 are assembled to form the mounting cavity 100, which facilitates the assembly and replacement of the circular cross-section carbon fiber rod 110, thereby improving the production efficiency of the cable body 100.

[0052] The circular cross-section carbon fiber rods 110 thus formed are distributed together with several other circular cross-section carbon fiber rods 110 to form the cable body 100, so that the cable body 100 has a hexagonal or hexagonal cross-section with missing corners. Preferably, the cable body 100 has a hexagonal cross-section to improve the lateral force performance and production efficiency of the cable body 100.

[0053] Furthermore, the covering layer 200 is disposed on the outside of the cable body 100 to protect the cable body 100.

[0054] Combination Figure 1 Specifically, the covering layer 200 includes one or more of the following: wrapping tape 210, flame-retardant insulating tape 220, and PE protective sleeve 230.

[0055] In this example, the wrapping tape 210 covers the outside of several rounded hexagonal cross-section carbon fiber rods 120 to fix the cable body 100, ensuring the tight fit between the rounded hexagonal cross-section carbon fiber rods 120 and the circular cross-section carbon fiber rods 110. At the same time, it can also prevent external environmental factors from causing erosion and wear to the rounded hexagonal cross-section carbon fiber rods 120, and maintain the appearance and structural integrity of the cable body 100.

[0056] For example, the flame-retardant insulating heat strip 220 can be made of basalt composite fiber insulating heat strip and wrapped around the outside of the wrapping tape 210. It can effectively ensure the safety of the cable body 100 in high-temperature environments, prevent or slow down the spread of fire along the cable body 100, and at the same time reduce heat transfer and protect the structure of the cable body 100 from high-temperature damage.

[0057] Furthermore, the PE protective sleeve 230, covering the outside of the flame-retardant insulating tape 220, provides physical isolation for the cable body 100, preventing environmental factors such as moisture, chemicals, and ultraviolet radiation from directly contacting the rounded hexagonal cross-section carbon fiber rod 120, thereby slowing down or preventing the aging and degradation of the cable body 100. In addition, the PE protective sleeve 230 also provides a certain degree of mechanical protection, reducing wear and damage to the cable body 100 during transportation and installation.

[0058] The cladding layer 200 thus formed can effectively protect the cable body 100 and ensure the structural stability and safety of the cable body 100.

[0059] Example 2

[0060] Based on Embodiment 1, in this example, a filler 300 is provided in the gap between the cable body 100 and the covering layer 200 to further improve the lateral force-bearing performance of the cable body 100.

[0061] Combination Figure 4 Specifically, the gap between the outermost rounded hexagonal cross-section carbon fiber rod 120 of the cable body 100 and the wrapping tape 210 is filled with a filler 300 having a similar modulus to the rounded hexagonal cross-section carbon fiber rod 120, such as high-strength epoxy resin filler or aluminum alloy filler, to increase the effective area of ​​the outermost rounded hexagonal cross-section carbon fiber rod 120 of the cable body 100 that can withstand lateral forces, thereby reducing contact compressive stress and improving the lateral force-bearing performance of the cable body 100.

[0062] As a preferred configuration, the filler 300 is only provided in the transverse stress-bearing section of the cable body 100. In the non-transverse stress-bearing section of the cable body 100, the carbon fiber cable structure in this example is the same as in Embodiment 1, without the filler 300. In the transverse stress-bearing section of the cable body 100, the filler 300 is provided in the gap between the rounded hexagonal cross-section carbon fiber rod 120 and the cladding layer 200, thereby specifically strengthening the transverse stress-bearing performance of the cable body 100, ensuring the transverse stress-bearing performance of the cable body 100 while reducing the manufacturing cost of the cable body 100.

[0063] Example 3

[0064] Combination Figure 5 Based on Embodiment 1 or Embodiment 2, in this example, a fiber optic sensor 400 is provided in the circular cross-section carbon fiber rod 110 at the center of the cable body 100, so that the circular cross-section carbon fiber rod 110 and the fiber optic sensor 400 constitute a smart rib, and the rounded hexagonal cross-section carbon fiber rod 120 constitutes a non-smart rib. The cable body 100 constitutes a smart carbon fiber cable body, which can effectively monitor and evaluate parameters such as stress, strain and temperature of the cable body 100.

[0065] Furthermore, when the circular cross-section carbon fiber rod 110 is used as a smart rib, it can be installed into the installation cavity 100 after the non-smart rib, i.e., several rounded hexagonal cross-section carbon fiber rods 120, are combined to form the installation cavity 100. This prevents the smart rib from being installed simultaneously with the non-smart rib, avoids the fiber optic sensor 400 inside the circular cross-section carbon fiber rod 110 from being squeezed and damaged, and improves the survival rate of the fiber optic sensor 400.

[0066] Meanwhile, the subsequent installation of the circular cross-section carbon fiber rod 110 also ensures that the production of the cable body 100 is not limited by the size of the smart rib, thereby improving production efficiency.

[0067] Therefore, the carbon fiber cable provided by the present invention uses a circular cross-section carbon fiber rod 110 and a rounded hexagonal cross-section carbon fiber rod 120 to form a cable body 100, which can effectively improve the lateral force performance and production efficiency of the cable body 100. The cable body 100 is protected by a covering layer 200. Furthermore, depending on the specific application, a filler 300 and an optical fiber sensor 400 can be set to further improve the lateral force performance and functionality of the carbon fiber cable.

[0068] The present invention also provides a method for manufacturing a carbon fiber cable. Based on the carbon fiber cable constructed according to the above scheme, the manufacturing method includes:

[0069] First, a circular cross-section carbon fiber rod 110 is placed. Then, several rounded hexagonal cross-section carbon fiber rods 120 are distributed around the circumference of the circular cross-section carbon fiber rod 110. The several rounded hexagonal cross-section carbon fiber rods 120 are densely arranged to form a hexagonal or hexagonal cross-section with missing corners to form the cable body 100.

[0070] Next, the cladding layer 200 is wrapped around the outside of several rounded hexagonal cross-section carbon fiber rods 120 to effectively isolate and protect the cable body 100.

[0071] For the intelligent carbon fiber cable equipped with an optical fiber sensor 400, this manufacturing method further includes:

[0072] First, several rounded hexagonal cross-section carbon fiber rods 120 are densely arranged to form a hexagonal or missing-corner hexagonal cross-section, and a mounting cavity 130 is formed at the center of the cross-section. Then, a circular cross-section carbon fiber rod 110 is placed in the mounting cavity 130 to form a cable body 100, so as to avoid the fiber optic sensor 400 inside the circular cross-section carbon fiber rod 110 being squeezed and damaged.

[0073] Next, the cladding layer 200 is wrapped around the outside of several rounded hexagonal cross-section carbon fiber rods 120 to effectively isolate and protect the cable body 100.

[0074] Furthermore, in the two manufacturing methods described above, the gap between the rounded hexagonal cross-section carbon fiber rod 120 and the cladding layer 200 can be filled with filler 300 in the transverse stress-bearing section of the cable body 100 to improve the transverse stress-bearing performance of the transverse stress-bearing section of the cable body 100.

[0075] This constitutes the method for manufacturing carbon fiber cables provided by the present invention.

[0076] To illustrate in detail how the carbon fiber cable and its manufacturing method provided by this invention can effectively improve the lateral stress performance of the cable body 100, combined with... Figure 6a and Figure 6b The figure shows the stress performance analysis of the cable based on carbon fiber rods with different cross sections.

[0077] As shown in the figure, under the same lateral compressive force, the maximum contact stress of the cable 100 using the rounded hexagonal cross-section carbon fiber rod 120 of the present invention is 34.6 MPa, which is significantly lower than the maximum contact stress of 70.1 MPa of the cable using the circular cross-section carbon fiber rod of the traditional solution, and is less than 1 / 2 of the traditional solution. Therefore, the carbon fiber cable and its manufacturing method provided by the present invention can effectively improve the lateral stress performance of the cable 100.

[0078] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A carbon fiber cable, comprising a cable body and a covering layer disposed on the outer side of the cable body, characterized in that, The cable body includes a circular cross-section carbon fiber rod and several rounded hexagonal cross-section carbon fiber rods. The adjacent sides of the rounded hexagonal cross-section carbon fiber rods are smoothly transitioned by arcs. Several rounded hexagonal cross-section carbon fiber rods are pre-densely arranged to form a hexagonal or hexagonal cross-section with missing corners. A placement cavity is formed at the center of the cross-section to accommodate the circular cross-section carbon fiber rod. The circular cross-section carbon fiber rod is then placed in the placement cavity, with gaps between it and the surrounding rounded hexagonal cross-section carbon fiber rods. The cladding layer is disposed on the outside of the carbon fiber rod with a rounded hexagonal cross-section.

2. The carbon fiber cable according to claim 1, characterized in that, The radius of the inscribed circle of the carbon fiber rod with rounded corners and a regular hexagonal cross-section is r1, and the radius of the carbon fiber rod with a circular cross-section is r0, where r0 is less than r1.

3. The carbon fiber cable according to claim 1, characterized in that, The covering layer includes one or more of wrapping tape, flame-retardant insulating tape, and PE protective sleeve.

4. The carbon fiber cable according to claim 3, characterized in that, The wrapping tape covers the outside of the rounded hexagonal cross-section carbon fiber rod, the flame-retardant insulating tape covers the outside of the wrapping tape, and the PE protective sleeve covers the outside of the flame-retardant insulating tape.

5. The carbon fiber cable according to claim 1, characterized in that, The gap between the rounded hexagonal cross-section carbon fiber rod and the cladding layer is filled with a filler.

6. The carbon fiber cable according to claim 5, characterized in that, The filler is disposed in the transverse stress-bearing section of the cable.

7. The carbon fiber cable according to claim 1, characterized in that, The circular cross-section carbon fiber rod is equipped with an optical fiber sensor.

8. A method for manufacturing a carbon fiber cable, characterized in that, The manufacturing method based on the carbon fiber cable according to any one of claims 1 to 7 includes: First, a circular cross-section carbon fiber rod is placed. Then, several rounded hexagonal cross-section carbon fiber rods are distributed around the circumference of the circular cross-section carbon fiber rod. These rounded hexagonal cross-section carbon fiber rods are then densely arranged to form a hexagonal or hexagonal cross-section with missing corners. The cladding layer is wrapped around the outside of several carbon fiber rods with rounded hexagonal cross sections.

9. The method for manufacturing carbon fiber cables according to claim 8, characterized in that, The manufacturing method further includes: First, several rounded hexagonal cross-section carbon fiber rods are densely arranged to form a hexagonal or hexagonal cross-section with missing corners, and a cavity is formed at the center of the cross-section. Then, a circular cross-section carbon fiber rod is placed in the cavity. The cladding layer is wrapped around the outside of several carbon fiber rods with rounded hexagonal cross sections.

10. The method for manufacturing carbon fiber cables according to claim 9, characterized in that, The gap between the rounded hexagonal cross-section carbon fiber rod and the cladding layer is filled with filler.

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