A high elasticity flexible cable and preparation method thereof

Abstract

The present invention relates to the technical field of cables and production thereof, in particular to a highly elastic flexible cable and a preparation method thereof, comprising n conductive wires, a braided sleeve sleeved on the outside of the conductive wires, a functional layer coaxially arranged on the outside of the braided sleeve and a wear-resistant layer coaxially arranged on the outside of the functional layer, and also comprising a plurality of center columns arranged in an array on the inside of the n conductive wires, the end faces of two coaxially adjacent center columns being fixedly connected by a plurality of connecting strips uniformly distributed along the circumferential direction, the other end of the center column being fixedly connected to an end face of a chuck, and n through holes being arranged in a circumferential array on the end face of the chuck; the same insulating sleeve section between two adjacent chucks is spirally arranged on a middle column, the number of spiral turns is m, and 1 / n≤m≤1, the same insulating sleeves at both ends of the chuck are counter-spirally arranged, the cable has high elasticity while maintaining flexibility, can be applied to different scenarios, and the device has good stability and overall practicality when in use.

Description

Technical Field

[0001] The invention relates to the technical field of cables and production thereof, and in particular to a high-elasticity flexible cable and a preparation method thereof. Background Art

[0002] As we all know, cables are the basis of data communication. The power supply system is particularly important for power engineering, remote control, and construction engineering, whether during the construction process or after it is put into use. Cables are the carriers of the power supply system. Strong current systems and weak current systems are controlled by power cables and control cables respectively.

[0003] With the universal use of cables, the environment in which cables are used is becoming more and more complex. However, due to the high hardness of existing cables, the existing cables cannot be bent at a large angle, which results in the existing cables being used in complex spaces and having unsatisfactory effects. In view of this, the staff has designed a highly elastic and flexible cable to improve the application scenarios of the cables in actual use. For example, the existing public document CN106409396B, a flexible fireproof cable and a preparation method thereof, and the existing public document CN104217799B, a flexible composite cable and a preparation method thereof, both disclose a flexible cable. However, the existing flexible cables still have the following deficiencies in actual use:

[0004] 1. Existing flexible cables are highly flexible but not elastic enough, which results in poor elastic recovery ability of the cables in actual use. When erecting large spans, the cable has a large concave arc, so that the connection tension at both ends of the cable is large, which reduces the stability of cable conduction;

[0005] 2. Existing flexible cables are assembled by fitting conductive wires with various functional layers. However, with the frequent bending of the cable, the internal conductive wires will cause the outer insulating layer to separate from the outer functional layer, thereby reducing the stability of the cable.

[0006] 3. Existing flexible cables lack the function of effectively detecting damaged parts, and the cable is installed (laid) over a long distance, which makes it difficult for workers to quickly locate the damaged part when the cable is damaged, thereby increasing the difficulty of maintenance for workers;

[0007] Therefore, it is necessary to improve the prior art to solve the above-mentioned technical problems. Summary of the invention

[0008] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0009] In view of the problems that the existing flexible cables have insufficient elasticity, poor stability in use and difficulty for workers to inspect the broken positions, a high-elasticity flexible cable is proposed.

[0010] In order to solve the above technical problems, the present invention provides the following technical solutions: a highly elastic flexible cable, comprising n conductive wires, a braided sleeve sleeved on the outside of the conductive wires, a functional layer coaxially arranged on the outside of the braided sleeve, and a wear-resistant layer coaxially arranged on the outside of the functional layer, and also comprising a plurality of center columns arranged in an array on the inside of the n conductive wires, the end faces of two coaxially adjacent center columns are fixedly connected by a plurality of connecting strips uniformly distributed along the circumferential direction, the other end of the center column is fixedly connected to one end face of a chuck, and n through holes are arranged on the end face of the chuck along the circumferential direction. The outer side of the conductive wire is sleeved with an insulating sleeve, and the through hole is used for the sliding passage of the insulating sleeve; the same insulating sleeve section between two adjacent chucks is arranged on the center column in an array The invention is spirally arranged, the number of spiral turns is m, and 1 / n≤m≤1, and the same insulating sleeves at both ends of the chuck are arranged in a counter-spiral direction; the central column, the connecting strip and the chuck are made of the same material, and the material of the central column includes the following raw material components in parts by weight: 40-45 parts of polyethylene, 30-34 parts of polyurethane rubber, 15-23 parts of natural rubber, 17-22 parts of carbon fiber powder, 5-7 parts of compatibilizer, 4-6 parts of antioxidant and 3-6 parts of coupling agent; the gap inside the braided sleeve is filled with a first filling layer, and the first filling layer includes the following raw material components in parts by weight: 32-38 parts of nano silica gel particles, 25-30 parts of pearl cotton, 13-17 parts of softener and 15-16 parts of talcum powder.

[0011] As a preferred solution of a high-elasticity flexible cable of the present invention, the material of the central column includes the following raw material components in parts by weight: 40 parts of polyethylene, 34 parts of polyurethane rubber, 15 parts of natural rubber, 22 parts of carbon fiber powder, 5 parts of compatibilizer, 6 parts of antioxidant and 3 parts of coupling agent; the first filling layer includes the following raw material components in parts by weight: 38 parts of nano silica gel particles, 25 parts of pearl cotton, 17 parts of softener and 15 parts of talcum powder.

[0012] As a preferred solution of a high-elasticity flexible cable of the present invention, the material of the central column includes the following raw material components in parts by weight: 45 parts of polyethylene, 30 parts of polyurethane rubber, 23 parts of natural rubber, 17 parts of carbon fiber powder, 7 parts of compatibilizer, 4 parts of antioxidant and 6 parts of coupling agent; the first filling layer includes the following raw material components in parts by weight: 32 parts of nano silica gel particles, 30 parts of pearl cotton, 13 parts of softener and 16 parts of talcum powder.

[0013] As a preferred solution of a high-elasticity flexible cable of the present invention, the material of the central column includes the following raw material components in parts by weight: 43 parts of polyethylene, 32 parts of polyurethane rubber, 19 parts of natural rubber, 20 parts of carbon fiber powder, 6 parts of compatibilizer, 5 parts of antioxidant and 4.5 parts of coupling agent; the first filling layer includes the following raw material components in parts by weight: 25 parts of nano-silica gel particles, 27 parts of pearl cotton, 15 parts of softener and 15.5 parts of talcum powder.

[0014] As a preferred solution of the high elasticity flexible cable of the present invention, the braided sleeve is used to shield external interference signals.

[0015] As a preferred solution of the high elasticity flexible cable of the present invention, the functional layer includes at least one of a flame retardant layer, an insulating layer, a shielding layer and an anti-oxidation layer.

[0016] As a preferred solution of the high elasticity flexible cable of the present invention, a thread groove is arranged on the outer wall of the functional layer, and a second filling layer is filled in the thread groove.

[0017] As a preferred solution of the high elasticity flexible cable of the present invention, the second filling layer includes fluorescent powder.

[0018] As a preferred solution of the high elasticity flexible cable of the present invention, the second filling layer includes calcium oxide powder and solid odorant, and the weight ratio of the calcium oxide powder to the solid odorant is 1:0.3-0.7.

[0019] The beneficial effects of the present invention are:

[0020] 1. Through the setting of the connector of the center column, the connecting strip and the chuck, when the cable body is bent, the high elasticity of the center column can realize the reset of the cable body, and the connection strip between the two center columns can maintain the flexibility of the cable when bending and improve the elasticity after bending. Polyethylene is used as the main material, which can still maintain good flexibility at low temperature and reduce brittleness;

[0021] 2. The same insulating sleeve section between two adjacent chucks is arranged in a spiral on the middle column, and the same insulating sleeves at both ends of the chuck are arranged in a counter-spiral direction. When the staff bends the cable body at a certain place, no matter in which direction the bending and twisting is performed, the cable wound in the opposite direction of the bending direction will compensate the cable wound in the same direction. This can avoid the deviation between the cable structures caused by bending and twisting, which will damage the stability of the connection. Compared with the cable wound in the same direction, it can avoid the problem of the cable twisting due to reverse bending and the internal cable being squeezed outward due to loose twisting;

[0022] 3. Through the setting of carbon fiber powder, the conductive performance can be improved and the interference of static electricity on the conductive wire can be avoided;

[0023] 4. Through the setting of nano-silica gel particles, pearl cotton and talcum powder, when the cable is bent and twisted, the friction between the internal accessories can be reduced to avoid wear and tear caused by friction between the accessories;

[0024] 5. Through the setting of the second filling layer, when the cable body is damaged, the second filling layer will be discharged from the cable body. By detecting the second filling layer, it is convenient for the staff to quickly detect the damaged parts and improve the convenience of maintenance.

[0025] In addition, the present invention also provides the following technical solution: a method for preparing a high-elasticity flexible cable, wherein the high-elasticity flexible cable is prepared according to the following steps;

[0026] S1: adding polyethylene, polyurethane rubber, natural rubber, antioxidant and coupling agent into an internal mixer according to weight parts, and mixing at 120-160° C. for 20-30 minutes to obtain a mixture A;

[0027] Adding parts by weight of a compatibilizer and carbon fiber powder to mixture A, and kneading for 15 to 25 minutes at 100 to 130° C. to obtain mixture B;

[0028] The molten mixture B is placed in a mold, and the mixture B is cooled to room temperature to obtain a connection body of the central column, the connecting strip and the chuck;

[0029] S2: placing the conductive wire in an extruder and extruding it to obtain a conductive wire wrapped with an insulating sleeve;

[0030] S3: after the conductive wire obtained in step S2 is cooled, the conductive wire wrapped with the insulating sleeve is passed through the through holes on the plurality of chucks in a spiral winding manner to obtain a matching part A;

[0031] S4: spraying adhesive on the outer wall of accessory A, then passing the matching piece A through the pile of the first filling layer, and after passing through, weaving a braided sleeve on the outer side of the matching piece A through a braiding machine, and spraying adhesive on the outer surface again after the braided sleeve is woven, to obtain matching piece B;

[0032] S5: After the adhesive is solidified, the fitting B is placed in an extruder for extrusion to obtain a fitting C wrapped with a functional layer, and before the fitting C is cooled, a thread groove is pressed on the outer wall of the fitting C by a press;

[0033] S6: After the fitting C is cooled, the adhesive is sprayed on the outer wall of the fitting C, and then the fitting C is passed through the pile of the second filling layer. After the second filling layer is filled and the adhesive is solidified, it is placed in an extruder for extrusion to obtain a cable body wrapped with a wear-resistant layer, and the finished product is obtained after cooling to room temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0035] Figure 1 This is a schematic diagram of the overall structure of a highly elastic flexible cable.

[0036] Figure 2 This is a schematic diagram of the internal structure of a highly elastic flexible cable.

[0037] Figure 3 An exploded view of a highly elastic flexible cable.

[0038] Figure 4 This is a cross-sectional view of a highly elastic flexible cable in the radial direction. DETAILED DESCRIPTION

[0039] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0040] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0041] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0042] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0043] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The present invention is a highly elastic flexible cable, comprising n conductive wires 1, a braided sleeve 3 sleeved on the outside of the conductive wires 1, a functional layer 4 coaxially arranged on the outside of the braided sleeve 3, and a wear-resistant layer 5 coaxially arranged on the outside of the functional layer 4. The conductive wires 1 are used for electrical conduction during use, the braided sleeve 3 is used for shielding external interference signals, the functional layer 4 comprises at least one of a flame retardant layer, an insulating layer, a shielding layer and an antioxidant layer to achieve at least one function of flame retardancy, insulation, signal shielding and anti-oxidation, and the wear-resistant layer 5 can improve the wear resistance of the cable body.

[0044] Specifically, it also includes a plurality of center columns 2 arranged in an array inside the n conductive wires 1, the end faces of two coaxial adjacent center columns 2 are fixedly connected by a plurality of connecting strips 202 uniformly distributed along the circumferential direction, the other end of the center column 2 is fixedly connected to one end face of a chuck 201, and n through holes 203 are arranged in a circumferential array on the end face of the chuck 201, the outer side of the conductive wire 1 is sleeved with an insulating sleeve 101, and the through holes 203 are used for the insulating sleeve 101 to slide through;

[0045] The same insulating sleeve 101 section between two adjacent chucks 201 is arranged in a spiral on the middle column, the number of spiral turns is m, and 1 / n≤m≤1, and the same insulating sleeve 101 at both ends of the chuck 201 is arranged in a counter-spiral direction. The insulating sleeve 101 can play an insulating role, and its components are prior art, so it will not be repeated;

[0046] The above arrangement allows for adaptive compensation when the cable body is bent or twisted by the counter-spiral arrangement of the insulating sleeves 101 on both sides of the chuck 201. This arrangement can prevent the internal structure from being separated relative to the multiple conductive wires 1 arranged in parallel along the axial direction, and can prevent the conductive wires 1 from being squeezed outward when they are twisted relative to the arrangement spirally arranged in the same direction, thus having good practicality.

[0047] The center column 2, the connecting strip 202 and the chuck 201 are made of the same material, and the material of the center column 2 includes the following raw material components in parts by weight: 40-45 parts of polyethylene, 30-34 parts of polyurethane rubber, 15-23 parts of natural rubber, 17-22 parts of carbon fiber powder, 5-7 parts of compatibilizer, 4-6 parts of antioxidant and 3-6 parts of coupling agent;

[0048] Polyethylene, polyurethane rubber and natural rubber are the main materials, which can improve the flexibility of the electrical conductor 1 while maintaining the elasticity of the finished product; carbon fiber powder can play a role in conducting static electricity to avoid interference of signals between the electrical conductors 1; coupling agents are used for the fusion of inorganic and organic substances; antioxidants play an anti-oxidation role, preferably 1010 oxidants; and compatibilizers are used to improve the bonding between polymers.

[0049] The gap inside the braided sleeve 3 is filled with a first filling layer 6, which includes the following raw material components in parts by weight: 32-38 parts of nano silica gel particles, 25-30 parts of pearl cotton, 13-17 parts of softener and 15-16 parts of talcum powder;

[0050] On the one hand, nano-silica gel particles can play a role in drying and dehumidification. On the other hand, the porous setting of the nano-silica gel particles themselves can play a role in buffering and protection when the cable body is bent and twisted. The setting of pearl cotton and talcum powder can reduce friction. The softener can soften and refine the ingredients. Pearl cotton is a particle with a diameter of less than 3mm.

[0051] Furthermore, a thread groove 401 is provided on the outer wall of the functional layer 4, and the thread groove 401 is filled with a second filling layer 7, and the second filling layer 7 is used as a marker when the staff detects the cable body.

[0052] In addition, the present invention also provides a method for preparing a high-elasticity flexible cable, which is specifically prepared according to the following steps:

[0053] S1: adding polyethylene, polyurethane rubber, natural rubber, antioxidant and coupling agent into an internal mixer according to weight parts, and mixing at 120-160° C. for 20-30 minutes to obtain a mixture A;

[0054] Adding parts by weight of a compatibilizer and carbon fiber powder to mixture A, and kneading for 15 to 25 minutes at 100 to 130° C. to obtain mixture B;

[0055] The mixture B in a molten state is placed in a mold, and the mixture B is cooled to room temperature to obtain a connection body of the center column 2, the connecting strip 202 and the chuck 201. In actual use, the center column 2, the connecting strip 202 and the chuck 201 connection body, which are all one in number, can be formed as a unit, and then fused and spliced ​​together after forming;

[0056] S2: placing the conductive wire 1 in an extruder and extruding it to obtain the conductive wire 1 wrapped with the insulating sleeve 101;

[0057] S3: After the conductive wire 1 obtained in step S2 is cooled, the conductive wire 1 wrapped with the insulating sleeve 101 is passed through the through holes 203 on the plurality of chucks 201 in a spiral winding manner to obtain a fitting A;

[0058] S4: spraying adhesive on the outer wall of accessory A, then passing the fitting A through the pile of the first filling layer 6, and after passing through, weaving a braided sleeve 3 on the outer side of the fitting A through a braiding machine, and spraying adhesive on the outer surface of the braided sleeve 3 again after the braiding is completed, to obtain fitting B;

[0059] S5: After the adhesive is solidified, the fitting B is placed in an extruder for extrusion to obtain a fitting C wrapped with a functional layer 4. Before the fitting C is cooled, a thread groove 401 is pressed on the outer wall of the fitting C by a press.

[0060] S6: After the fitting C is cooled, the adhesive is sprayed on the outer wall of the fitting C, and then the fitting C is passed through the pile of the second filling layer 7. After the second filling layer 7 is filled and the adhesive is solidified, it is placed in an extruder for extrusion to obtain a cable body wrapped with a wear-resistant layer 5, and the finished product is obtained after cooling to room temperature.

[0061] Example 1

[0062] In order to facilitate and better implement the present invention, this embodiment provides a specific raw material component weight portion of the central column 2 and the first filling layer 6.

[0063] Specifically, the material of the center column 2 includes the following raw material components in parts by weight: 40 parts of polyethylene, 34 parts of polyurethane rubber, 15 parts of natural rubber, 22 parts of carbon fiber powder, 5 parts of compatibilizer, 6 parts of antioxidant and 3 parts of coupling agent; the first filling layer 6 includes the following raw material components in parts by weight: 38 parts of nano silica gel particles, 25 parts of pearl cotton, 17 parts of softener and 15 parts of talcum powder.

[0064] Example 2

[0065] In order to facilitate and better implement the present invention, this embodiment provides another specific raw material component weight parts of the central column 2 and the first filling layer 6.

[0066] Specifically, the material of the central column 2 includes the following raw material components in parts by weight: 45 parts of polyethylene, 30 parts of polyurethane rubber, 23 parts of natural rubber, 17 parts of carbon fiber powder, 7 parts of compatibilizer, 4 parts of antioxidant and 6 parts of coupling agent; the first filling layer 6 includes the following raw material components in parts by weight: 32 parts of nano silica gel particles, 30 parts of pearl cotton, 13 parts of softener and 16 parts of talcum powder.

[0067] Example 3

[0068] In order to facilitate and better implement the present invention, this embodiment provides another specific raw material component weight parts of the central column 2 and the first filling layer 6.

[0069] Specifically, the material of the center column 2 includes the following raw material components in parts by weight: 43 parts of polyethylene, 32 parts of polyurethane rubber, 19 parts of natural rubber, 20 parts of carbon fiber powder, 6 parts of compatibilizer, 5 parts of antioxidant and 4.5 parts of coupling agent; the first filling layer 6 includes the following raw material components in parts by weight: 25 parts of nano silica gel particles, 27 parts of pearl cotton, 15 parts of softener and 15.5 parts of talcum powder.

[0070] Example 4

[0071] This embodiment is the fourth embodiment of the present invention. This embodiment is based on any of the above embodiments, except that the material of the second filling layer 7 is further described for better implementation.

[0072] Specifically, the second filling layer 7 includes fluorescent powder, and the cable body containing the second filling layer 7 is mainly used in an erected manner. During inspection and maintenance, the staff only needs to irradiate the cable body with an ultraviolet lamp to detect whether there is any overflow of fluorescent powder, thereby achieving rapid maintenance.

[0073] Example 5

[0074] This embodiment is the fifth embodiment of the present invention, which is based on any one of Embodiments 1, 2 and 3, except that the material of the second filling layer 7 is further described for better implementation.

[0075] Specifically, the second filling layer 7 includes calcium oxide powder and solid odorant, and the weight ratio of calcium oxide powder to solid odorant is 1:0.3-0.7. The cable body containing the second filling layer 7 is mainly used in a buried layout. When the cable body is damaged, the calcium oxide powder and the solid odorant will be exposed to the ground. The staff can detect the solid odorant through instruments, that is, rapid inspection can be achieved. When the calcium oxide powder encounters moisture in the soil, a certain temperature will be generated, which will promote the volatilization of the solid odorant and improve the sensitivity of the detection. The calcium oxide powder can also play a role in preventing bites.

[0076] In addition, it should be noted that the components not described in detail in this article are prior art.

[0077] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only several embodiments are described in detail in this disclosure, it should be easily understood by the personnel referring to this disclosure that many modifications are possible (for example, the size, scale, structure, shape and ratio of various elements, and parameter values ​​(for example, temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to specific embodiments, but extends to multiple modifications that still fall within the scope of the appended claims.

[0078] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0079] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0080] 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 preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A highly elastic flexible cable, comprising n conductive wires (1), a braided sleeve (3) sleeved outside the conductive wires (1), a functional layer (4) coaxially arranged outside the braided sleeve (3), and a wear-resistant layer (5) coaxially arranged outside the functional layer (4), characterized in that: It also comprises a plurality of center columns (2) arranged in an array on the inner side of the n conductive wires (1), the end faces of two coaxial adjacent center columns (2) being fixedly connected via a plurality of connecting strips (202) uniformly distributed in the circumferential direction, the other end of the center column (2) being fixedly connected to an end face of a chuck (201), the end face of the chuck (201) being provided with n through holes (203) in an array in the circumferential direction, the outer side of the conductive wire (1) being sleeved with an insulating sleeve (101), the through hole (203) being used for the insulating sleeve (101) to slide through; The same insulating sleeve (101) section between two adjacent chucks (201) is arranged in a spiral on the central column, the number of spiral turns is m, and 1 / n≤m≤1, and the same insulating sleeve (101) at both ends of the chuck (201) is arranged in a counter-spiral direction; The central column (2), the connecting strip (202) and the chuck (201) are made of the same material, and the material of the central column (2) comprises the following raw material components in parts by weight: 40 to 45 parts of polyethylene, 30 to 34 parts of polyurethane rubber, 15 to 23 parts of natural rubber, 17 to 22 parts of carbon fiber powder, 5 to 7 parts of a compatibilizer, 4 to 6 parts of an antioxidant and 3 to 6 parts of a coupling agent; The gap inside the braided sleeve (3) is filled with a first filling layer (6), and the first filling layer (6) comprises the following raw material components in parts by weight: 32 to 38 parts of nano silica gel particles, 25 to 30 parts of pearl cotton, 13 to 17 parts of softener and 15 to 16 parts of talcum powder.

2. A highly elastic flexible cable as claimed in claim 1, characterized in that: The material of the central column (2) includes the following raw material components in parts by weight: 40 parts of polyethylene, 34 parts of polyurethane rubber, 15 parts of natural rubber, 22 parts of carbon fiber powder, 5 parts of compatibilizer, 6 parts of antioxidant and 3 parts of coupling agent; The first filling layer (6) comprises the following raw material components in parts by weight: 38 parts of nano silica gel particles, 25 parts of pearl cotton, 17 parts of softener and 15 parts of talcum powder.

3. A highly elastic flexible cable as claimed in claim 1, characterized in that: The material of the central column (2) includes the following raw material components in parts by weight: 45 parts of polyethylene, 30 parts of polyurethane rubber, 23 parts of natural rubber, 17 parts of carbon fiber powder, 7 parts of compatibilizer, 4 parts of antioxidant and 6 parts of coupling agent; The first filling layer (6) comprises the following raw material components in parts by weight: 32 parts of nano silica gel particles, 30 parts of pearl cotton, 13 parts of softener and 16 parts of talcum powder.

4. A highly elastic flexible cable as claimed in claim 1, characterized in that: The material of the central column (2) includes the following raw material components in parts by weight: 43 parts of polyethylene, 32 parts of polyurethane rubber, 19 parts of natural rubber, 20 parts of carbon fiber powder, 6 parts of compatibilizer, 5 parts of antioxidant and 4.5 parts of coupling agent; The first filling layer (6) comprises the following raw material components in parts by weight: 25 parts of nano silica gel particles, 27 parts of pearl cotton, 15 parts of softener and 15.5 parts of talcum powder.

5. A highly elastic flexible cable as claimed in claim 2, 3 or 4, characterized in that: The braided sleeve (3) is used to shield external interference signals.

6. A highly elastic flexible cable as claimed in claim 5, characterized in that: The functional layer (4) comprises at least one of a flame retardant layer, an insulating layer, a shielding layer and an anti-oxidation layer.

7. A highly elastic flexible cable as claimed in claim 6, characterized in that: A thread groove (401) is provided on the outer side wall of the functional layer (4), and a second filling layer (7) is filled in the thread groove (401).

8. A highly elastic flexible cable as claimed in claim 7, characterized in that: The second filling layer (7) comprises phosphor.

9. A highly elastic flexible cable as claimed in claim 7, characterized in that: The second filling layer (7) comprises calcium oxide powder and a solid odorant, and the weight ratio of the calcium oxide powder to the solid odorant is 1:0.3-0.

7.

10. A method for preparing a high elasticity flexible cable, characterized in that: A highly elastic flexible cable as described in any one of claims 7 to 9 is prepared according to the following steps; S1: adding polyethylene, polyurethane rubber, natural rubber, antioxidant and coupling agent into an internal mixer according to weight parts, and mixing at 120-160° C. for 20-30 min to obtain a mixture A; Adding parts by weight of a compatibilizer and carbon fiber powder to mixture A, and kneading for 15 to 25 minutes at 100 to 130° C. to obtain mixture B; Placing the molten mixture B in a mold, and cooling the mixture B to room temperature to obtain a connection body of the central column (2), the connecting strip (202) and the chuck (201); S2: placing the conductive wire (1) in an extruder for extrusion to obtain a conductive wire (1) wrapped with an insulating sleeve (101); S3: after the conductive wire (1) obtained in step S2 is cooled, the conductive wire (1) wrapped with the insulating sleeve (101) is passed through the through holes (203) on the plurality of chucks (201) in a spirally wound manner to obtain a fitting A; S4: spraying adhesive on the outer wall of accessory A, then passing matching component A through the pile of the first filling layer (6), and after passing through, weaving a braided sleeve (3) on the outer side of accessory A through a braiding machine, and after the braided sleeve (3) is woven, spraying adhesive on the outer surface again, to obtain matching component B; S5: After the adhesive is solidified, the fitting B is placed in an extruder for extrusion to obtain a fitting C wrapped with a functional layer (4), and before the fitting C is cooled, a thread groove (401) is pressed on the outer wall of the fitting C by a press machine; S6: After the fitting C is cooled, the adhesive is sprayed on the outer wall of the fitting C, and then the fitting C is passed through the pile of the second filling layer (7). After the second filling layer (7) is filled and the adhesive is solidified, it is placed in an extruder for extrusion to obtain a cable body wrapped with a wear-resistant layer (5). The finished product is obtained after cooling to room temperature.

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