Carbon fiber inhaul cable and manufacturing method thereof

Abstract

The invention discloses a carbon fiber inhaul cable and a manufacturing method thereof, a cable body adopts a hexagonal or unfilled-corner hexagonal section formed by densely matching a plurality of rounded-corner regular-hexagonal-section carbon fiber bars, and compared with a circular-section carbon fiber bar, the contact area between the plurality of rounded-corner regular-hexagonal-section carbon fiber bars is obviously increased, so that the tensile strength of the carbon fiber inhaul cable is improved, and the tensile strength of the carbon fiber inhaul cable is improved. According to the carbon fiber rods with the round-corner regular-hexagon sections, the extrusion stress of the contact positions of the carbon fiber rods can be reduced when the cable body bears transverse extrusion, and therefore the transverse stress performance of the cable body is improved, and a containing cavity for containing the carbon fiber rods with the round-corner regular-hexagon sections is formed in the center of the sections of the carbon fiber rods with the round-corner regular-hexagon sections. The circular-section carbon fiber bar can be mounted in the placement cavity after the plurality of circular-corner regular-hexagon-section carbon fiber bars are bundled to form the placement cavity, so that the circular-section carbon fiber bar and the plurality of circular-corner regular-hexagon-section carbon fiber bars are prevented from being bundled synchronously, and an optical fiber sensor in the circular-section carbon fiber bar cannot be extruded and damaged; the production efficiency and the survival rate of the optical fiber sensor are improved.

Description

Technical Field

[0001] The invention relates to the technical field of civil engineering, and in particular to a carbon fiber cable. Background Art

[0002] Carbon fiber composites (CFRP) have ultra-high tensile strength. When used in the form of cables, they can fully exert their tensile strength and can be used as the main tensile member in large-span space structures (such as cable net structures and string structures). However, CFRP is a typical anisotropic material with high longitudinal tensile strength, but poor transverse compressive and shear strength. Therefore, the transverse force performance of CFRP cables is poor.

[0003] Carbon fiber cables usually have two structural forms: parallel rod cables and parallel plate cables. The cable body of the parallel plate cable is composed of multiple layers of sheet-like carbon fiber sheets, such as the cable disclosed in the Chinese patent application with the announcement number CN 108004926 A. The cable body of the existing carbon fiber parallel rod cable usually uses a number of circular cross-section carbon fiber rods arranged in a hexagonal or corner-less hexagonal bundle to exert 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 of the cable body in withstanding lateral extrusion.

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

[0005] In addition, the intelligent carbon fiber cable body is a cable body that combines carbon fiber cables and intelligent sensing technology, and is mainly used to monitor and evaluate parameters such as stress, strain and temperature of the cable body. The intelligent tendons in the intelligent carbon fiber cable body are composed of fiber optic sensors embedded inside carbon fiber rods, and the non-intelligent tendons are composed of conventional carbon fiber rods. The existing intelligent carbon fiber cable body is usually composed of intelligent tendons and non-intelligent tendons that are bundled together. However, after the intelligent tendons are preset with optical fiber sensors, the production and manufacturing of the intelligent carbon fiber cable body will be limited by the size of the intelligent tendons, and the production efficiency is low. In addition, during the process of synchronous bundling of the intelligent tendons with the non-intelligent tendons, the internal optical fiber sensors are easily squeezed and damaged, and the survival rate is low, resulting in high production costs.

[0006] Therefore, how to effectively improve the lateral force performance of carbon fiber parallel rod cables, while improving the production efficiency of intelligent carbon fiber cable bodies and the survival rate of optical fiber sensors has become an urgent problem to be solved in this field. Summary of the invention

[0007] In view of the defects of the prior art, the object of the present invention is to provide a carbon fiber cable and a manufacturing method thereof with good lateral force bearing performance, high production efficiency and optical fiber sensor survival rate.

[0008] In order to achieve the above object, the carbon fiber cable provided by the present invention comprises a cable body and a coating layer arranged outside the cable body.

[0009] The cable body includes a circular cross-section carbon fiber rod and a plurality of rounded regular hexagonal cross-section carbon fiber rods, wherein the plurality of rounded regular hexagonal cross-section carbon fiber rods are closely arranged to form a hexagonal or missing-corner hexagonal cross-section, and a placement cavity for accommodating the circular cross-section carbon fiber rod is formed at the center of the cross-section.

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

[0011] Furthermore, the radius of the inscribed circle of the carbon fiber rod with rounded regular hexagonal cross-section is r1, and adjacent edges are smoothly transitioned through circular arcs, and the radius of the carbon fiber rod with circular cross-section is r0, and r0 is smaller than r1.

[0012] Furthermore, the coating layer includes one or more of a wrapping tape, a flame retardant insulation tape and a PE protective sleeve.

[0013] Furthermore, the wrapping tape is coated on the outside of the carbon fiber rod with a rounded regular hexagonal cross-section, the flame retardant insulation belt is coated on the outside of the wrapping tape, and the PE protective cover is coated on the outside of the flame retardant insulation belt.

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

[0015] Furthermore, the filler is arranged in a transverse force-bearing section of the cable body.

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

[0017] In order to achieve the above object, the present invention provides a method for manufacturing a carbon fiber cable, based on the carbon fiber cable, the manufacturing method comprises:

[0018] First, a circular cross-section carbon fiber rod is placed, and then a number of rounded regular hexagonal cross-section carbon fiber rods are distributed around the circumference of the circular cross-section carbon fiber rod, and a number of rounded regular hexagonal cross-section carbon fiber rods are densely arranged to form a hexagonal or missing-corner hexagonal cross-section.

[0019] The coating layer is wrapped around the outside of a plurality of carbon fiber rods with rounded regular hexagonal cross-sections.

[0020] Furthermore, the manufacturing method further comprises:

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

[0022] The coating layer is wrapped around the outside of a plurality of carbon fiber rods with rounded regular hexagonal cross-sections.

[0023] Furthermore, the gap between the carbon fiber rod with a rounded regular hexagonal cross-section and the coating layer is filled with fillers.

[0024] The carbon fiber cable and its manufacturing method provided by the present invention have a cable body that adopts a plurality of carbon fiber rods with rounded regular hexagonal cross-sections to form a hexagonal or corner-missing hexagonal cross-section. Compared with carbon fiber rods with circular cross-sections, the contact area between the plurality of carbon fiber rods with rounded regular hexagonal cross-sections is significantly increased, which can significantly reduce the extrusion stress at the contact position of the carbon fiber rods when the cable body is subjected to lateral extrusion, thereby improving the performance of the cable body to withstand lateral extrusion. At the same time, the densely distributed carbon fiber rods with rounded regular hexagonal cross-sections can form a larger effective cross-sectional area, which can provide greater bearing capacity, thereby improving the lateral force performance of the carbon fiber cable.

[0025] At the same time, an accommodation cavity for accommodating a circular cross-section carbon fiber rod is formed at the center position of the cross section of a plurality of carbon fiber rods with rounded regular hexagonal cross-sections, so that the circular cross-section carbon fiber rod can be installed in the accommodation cavity after a plurality of carbon fiber rods with rounded regular hexagonal cross-sections are bundled to form the accommodation cavity, thereby avoiding synchronous bundling with a plurality of carbon fiber rods with rounded regular hexagonal cross-sections. For a circular cross-section carbon fiber rod provided with an optical fiber sensor, the internal optical fiber sensor will not be squeezed and damaged, thereby improving the production efficiency and the survival rate of the optical fiber sensor.

[0026] In addition, a circular cross-section carbon fiber rod is used at the center of the carbon fiber cable. Under the condition that the circular cross-section carbon fiber rod does not twist, several rounded regular hexagonal cross-section carbon fiber rods can be twisted around the circular cross-section carbon fiber rod to ensure the strength and molding quality of the cable body. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0028] Figure 1 A schematic structural diagram of a first embodiment of a carbon fiber cable provided by the present invention;

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

[0030] Figure 3 It is a schematic structural diagram of a circular cross-section carbon fiber rod in the present invention;

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

[0032] Figure 5 This is a schematic structural diagram of a third embodiment of the carbon fiber cable provided by the present invention;

[0033] Figure 6a and Figure 6b This is an analysis of the mechanical properties of the cable body based on carbon fiber rods with different cross-sections in the present invention.

[0034] Reference numerals:

[0035] 100. Cable body; 110. Carbon fiber rod with circular cross section; 120. Carbon fiber rod with rounded regular hexagonal cross section; 130. Placement cavity;

[0036] 200. Coating layer; 210. Wrapping tape; 220. Flame retardant insulation tape; 230. PE protective cover;

[0037] 300. Filler; 400. Fiber optic sensor. DETAILED DESCRIPTION

[0038] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below with reference to specific diagrams.

[0039] Embodiment 1

[0040] See also Figure 1 , which shows an example of the carbon fiber cable provided by the present invention.

[0041] As can be seen from the figure, the carbon fiber cable of this example mainly includes a cable body 100 and a coating layer 200 arranged on the outside of the cable body 100 .

[0042] Among them, the cable body 100 includes a circular cross-section carbon fiber rod 110 and a plurality of rounded regular hexagonal cross-section carbon fiber rods 120. The plurality of rounded regular hexagonal cross-section carbon fiber rods 120 are densely arranged to form a hexagonal or corner-missing hexagonal cross-section, and a placement cavity 130 for accommodating the circular cross-section carbon fiber rod 110 is formed at the center of the cross-section. The plurality of rounded regular hexagonal cross-section carbon fiber rods 120 have a large mutual contact area, which can effectively improve the performance of the cable body 100 in withstanding lateral extrusion. At the same time, the circular cross-section carbon fiber rod 110 can be installed later in the placement cavity 130 to avoid synchronous bundling with the rounded regular hexagonal cross-section carbon fiber rod 120, so as to improve the production efficiency and the survival rate of the optical fiber sensor 140 inside the circular cross-section carbon fiber rod 110.

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

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

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

[0046] Recombination Figure 1 The several carbon fiber rods 120 with rounded regular hexagonal cross-sections thus formed can be closely matched with each other, and only small gaps are formed between three adjacent carbon fiber rods 120 with rounded regular hexagonal cross-sections. Compared with the carbon fiber rods with circular cross-sections, the carbon fiber rods 120 with rounded regular hexagonal cross-sections can significantly increase the contact area, thereby reducing the extrusion stress at the contact position of the carbon fiber rods when the cable body 100 is subjected to lateral extrusion, and effectively improving the performance of the cable body 100 to withstand lateral extrusion.

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

[0048] At the same time, since a certain gap is formed between three adjacent rounded regular hexagonal cross-section carbon fiber rods 120, combined with the arc-shaped smoothly transition corners of the rounded regular 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 winding performance.

[0049] In order to cooperate with the circular cross-section carbon fiber rod 110, a number of rounded regular hexagonal cross-section carbon fiber rods 120 are sealed together to form a hexagonal or missing-corner hexagonal cross-section. Preferably, a hexagonal cross-section is formed to facilitate the production and molding of the cable body 100, and an accommodation cavity 130 is formed at the center of the cross-section to accommodate the circular cross-section carbon fiber rod 110.

[0050] Specifically, combined 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 regular hexagonal cross-section carbon fiber rod 120, so that the circular cross-section carbon fiber rod 110 is arranged in the arrangement cavity 130, and there is a certain gap with the surrounding rounded regular hexagonal cross-section carbon fiber rods 120. When the cable body 100 is subjected to lateral extrusion force, there is no contact between the circular cross-section carbon fiber rod 110 at the center position and the surrounding rounded regular hexagonal cross-section carbon fiber rods 120, and no excessive extrusion pressure is generated, thereby ensuring the lateral force safety of the cable body 100.

[0051] Furthermore, the circular cross-section carbon fiber rod 110 at the center position can be installed into the placement cavity 100 or removed from the placement cavity 130 after several circular cross-section carbon fiber rods 110 are combined to form the placement 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 rod 110 thus formed is distributed in coordination with a plurality of circular cross-section carbon fiber rods 110 to form the cable body 100, so that the cable body 100 as a whole has a hexagonal or corner-less hexagonal cross-section. Preferably, the cable body 100 as a whole has a hexagonal cross-section to improve the lateral force performance and production efficiency of the cable body 100.

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

[0054] Combination Figure 1 Specifically, the coating layer 200 includes one or more of a wrapping tape 210 , a flame retardant insulation tape 220 and a PE protective sleeve 230 .

[0055] In this example, the wrapping tape 210 is wrapped around the outside of a number of carbon fiber rods 120 with rounded hexagonal cross-sections to fix the cable body 100, thereby ensuring the tightness of the fit between the carbon fiber rods 120 with rounded hexagonal cross-sections and the carbon fiber rods 110 with circular cross-sections. At the same time, it can also prevent external environmental factors from causing erosion and wear on the carbon fiber rods 120 with rounded hexagonal cross-sections, thereby maintaining the appearance and structural integrity of the cable body 100.

[0056] As an example, the flame retardant insulation belt 220 can be made of basalt composite fiber insulation belt and wrapped on the outside of the wrapping belt 210, which can effectively ensure the safety of the cable body 100 in a high temperature environment, prevent or slow down the spread of fire along the cable body 100, and reduce heat transfer, protecting the cable body 100 structure from high temperature damage.

[0057] Furthermore, the PE protective cover 230 is coated on the outside of the flame retardant insulation belt 220, which can provide physical isolation for the cable body 100, preventing environmental factors such as moisture, chemicals and ultraviolet rays from directly contacting the rounded regular hexagonal cross-section carbon fiber rod 120, thereby slowing down or preventing aging and degradation of the cable body 100. In addition, the PE protective cover 230 can also provide certain mechanical protection, reducing wear and damage to the cable body 100 during transportation and installation.

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

[0059] Embodiment 2

[0060] On the basis of the first embodiment, 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 carbon fiber rod 120 with rounded regular hexagonal cross-section in the outermost circle of the cable body 100 and the wrapping tape 210 is filled with a filler 300 having a similar modulus to the carbon fiber rod 120 with rounded regular hexagonal cross-section, such as a high-strength epoxy resin filler or an aluminum alloy filler, so as to increase the effective area of ​​the carbon fiber rod 120 with rounded regular hexagonal cross-section in the outermost circle of the cable body 100 that withstands lateral force, thereby reducing the contact compressive stress and improving the lateral force performance of the cable body 100.

[0062] As a preferred setting scheme, the filler 300 is only provided in the transverse force-bearing section of the cable body 100. In the non-transverse force-bearing section of the cable body 100, the carbon fiber cable structure of this example is the same as that of the first embodiment, and is not provided with the filler 300. In the transverse force-bearing section of the cable body 100, the filler 300 is provided in the gap between the carbon fiber rod 120 with a rounded regular hexagonal cross-section and the coating layer 200, so as to specifically enhance the transverse force-bearing performance of the transverse force-bearing section of the cable body 100, thereby ensuring the transverse force-bearing performance of the cable body 100 and reducing the production cost of the cable body 100.

[0063] Embodiment 3

[0064] Combination Figure 5 On the basis of the first or second embodiment, 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 smart tendons, the rounded regular hexagonal cross-section carbon fiber rod 120 constitutes a non-smart tendon, and the cable body 100 constitutes an intelligent carbon fiber cable body, which can effectively monitor and evaluate the stress, strain, temperature and other parameters 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 in the placement cavity 100 after the non-smart rib, that is, a plurality of rounded regular hexagonal cross-section carbon fiber rods 120 cooperate to form the placement cavity 100, so that the smart rib will not be installed at the same time as the non-smart rib, thereby avoiding the optical fiber sensor 400 inside the circular cross-section carbon fiber rod 110 from being squeezed and damaged, thereby improving the survival rate of the optical fiber sensor 400.

[0066] At the same time, the post-installation of the circular cross-section carbon fiber rod 110 can also ensure that the production of the cable body 100 will not be limited by the size of the smart tendons, thereby improving production efficiency.

[0067] Therefore, the carbon fiber cable provided by the present invention comprises a cable body 100 composed of a circular cross-section carbon fiber rod 110 and a rounded regular hexagonal cross-section carbon fiber rod 120, which can effectively improve the lateral force performance and production efficiency of the cable body 100, and protect the cable body 100 through a coating layer 200. Fillers 300 and optical fiber sensors 400 can also be provided according to specific applications 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 in the above scheme, the manufacturing method comprises:

[0069] First, a circular cross-section carbon fiber rod 110 is placed, and then a plurality of rounded regular hexagonal cross-section carbon fiber rods 120 are distributed around the circumference of the circular cross-section carbon fiber rod 110, and a plurality of rounded regular hexagonal cross-section carbon fiber rods 120 are densely matched to form a hexagonal or missing hexagonal cross-section to form the cable body 100.

[0070] Next, the coating layer 200 is wrapped around the outer sides of a plurality of carbon fiber rods 120 with rounded regular hexagonal cross-sections to effectively isolate and protect the cable body 100 .

[0071] For the intelligent carbon fiber cable body provided with the optical fiber sensor 400, the manufacturing method further includes:

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

[0073] Next, the coating layer 200 is wrapped around the outer sides of a plurality of carbon fiber rods 120 with rounded regular hexagonal cross-sections to effectively isolate and protect the cable body 100 .

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

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

[0076] In order to specifically illustrate that the carbon fiber cable and the manufacturing method thereof provided by the present invention can effectively improve the lateral force performance of the cable body 100, Figure 6a and Figure 6b , which shows the mechanical performance analysis of the cable body based on carbon fiber rods with different cross-sections.

[0077] As can be seen from the figure, under the action of the same lateral extrusion force, the maximum contact stress of the cable body 100 of the present invention using the carbon fiber rod 120 with a rounded regular hexagonal cross-section is 34.6 MPa, which is significantly lower than the maximum contact stress of 70.1 MPa of the cable body of the traditional scheme using the carbon fiber rod with a circular cross-section, and is lower than 1 / 2 of the traditional scheme. Therefore, the carbon fiber cable and its manufacturing method provided by the present invention can effectively improve the lateral force performance of the cable body 100.

[0078] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A carbon fiber cable, comprising a cable body and a coating layer arranged outside the cable body, characterized in that: The cable body includes a circular cross-section carbon fiber rod and a plurality of rounded regular hexagonal cross-section carbon fiber rods, wherein the plurality of rounded regular hexagonal cross-section carbon fiber rods are closely arranged to form a hexagonal or missing-corner hexagonal cross-section, and a placement cavity for accommodating the circular cross-section carbon fiber rod is formed at the center of the cross-section. The coating layer is arranged on the outside of the carbon fiber rod with a rounded regular 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 regular hexagonal cross section is r1, and adjacent edges are smoothly transitioned through circular arcs. The radius of the carbon fiber rod with circular cross section is r0, and r0 is smaller than r1.

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

4. The carbon fiber cable according to claim 3, characterized in that: The wrapping tape is coated on the outside of the carbon fiber rod with a rounded regular hexagonal cross-section, the flame retardant insulation belt is coated on the outside of the wrapping tape, and the PE protective sleeve is coated on the outside of the flame retardant insulation belt.

5. The carbon fiber cable according to claim 1, characterized in that: A filler is arranged in the gap between the carbon fiber rod with a rounded regular hexagonal cross section and the coating layer.

6. The carbon fiber cable according to claim 5, characterized in that: The filler is arranged in the transverse force-bearing section of the cable body.

7. The carbon fiber cable according to claim 1, characterized in that: An optical fiber sensor is arranged in the circular cross-section carbon fiber rod.

8. A method for manufacturing a carbon fiber cable, characterized in that: Based on the carbon fiber cable according to any one of claims 1 to 7, the manufacturing method comprises: First, a circular cross-section carbon fiber rod is placed, and then a number of rounded regular hexagonal cross-section carbon fiber rods are distributed around the circumference of the circular cross-section carbon fiber rod, and a number of rounded regular hexagonal cross-section carbon fiber rods are densely arranged to form a hexagonal or missing-corner hexagonal cross-section. The coating layer is wrapped around the outside of a plurality of carbon fiber rods with rounded regular hexagonal cross-sections.

9. The method for manufacturing a carbon fiber cable according to claim 8, characterized in that: The manufacturing method further comprises: First, a number of carbon fiber rods with rounded regular hexagonal cross-sections are densely arranged to form a hexagonal or missing-corner hexagonal cross-section, and a placement cavity is formed at the center of the cross-section. Then, the carbon fiber rods with circular cross-sections are placed in the placement cavity. The coating layer is wrapped around the outside of a plurality of carbon fiber rods with rounded regular hexagonal cross-sections.

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

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