An optical cable and a cable that are convenient for installation

Abstract

The present invention belongs to the field of cables, and particularly relates to an optical cable that is convenient for installation. It has an outer protective layer and two loose tubes. At least one optical communication component is provided in each loose tube. It is characterized in that the outer protective layer is composed of an outer protective layer main body. Two cavities are formed inside the outer protective layer main body. A plurality of columns are arranged along the axial direction of the optical cable between the two cavities. On the left and right sides of the outer protective layer main body, two supporting components are respectively provided upward and downward. At the top of each supporting component, a first installation component is provided towards the vertical axis. The loose tubes are located in the cavities. The present invention has beneficial effects such as simple structure, strong compressive capacity, abrasion resistance, and can be laid in multiple ways. The present invention solves the problem in the prior art that optical cables or cables cannot be applied to multiple usage scenarios and have great limitations in laying. The present invention also discloses a cable that is convenient for installation.

Description

Technical Field

[0001] The present invention belongs to the field of cables, and particularly relates to an optical cable and a cable that are convenient for installation. Background Art

[0002] With the large-scale promotion of domestic 5G construction, the demand for optical cables is increasing.

[0003] There are various ways to lay optical cables, and for each laying method, the performance requirements for optical cables are also different. Some laying methods also require special tools. For example, CN210864135U discloses an anti-side pressure outdoor overhead and indoor wiring optical cable, which includes a non-metallic central strengthening member, optical fibers, and an outer sheath. A spiral groove is provided on the outer side surface of the non-metallic central strengthening member, the optical fibers are arranged in the spiral groove, and the outer sheath is wrapped outside the non-metallic central strengthening member and the optical fibers.

[0004] The above-mentioned prior art has the following deficiencies: 1. Overhead laying requires tools such as hooks; 2. It cannot be laid in a pipe with a width less than the width of the optical cable. Summary of the Invention

[0005] In order to solve the above problems, the purpose of the present invention is to disclose an optical cable and a cable that are convenient for installation, and it is realized by the following technical solutions.

[0006] An optical cable that is convenient for installation has an outer sheath and two loose tubes. At least one optical communication component is provided in each loose tube. It is characterized in that the outer sheath is composed of an outer sheath main body. Two cavities are formed inside the outer sheath main body. A plurality of columns are arranged along the axial direction of the optical cable between the two cavities. Two support components are respectively provided upward and downward on the left and right sides of the outer sheath main body. A first installation component is provided at the top of each support component towards the vertical axis. The distance from the bottom edge of the upper first installation component to the horizontal axis is greater than the distance from the top of the outer sheath main body to the horizontal axis. The distance from the top edge of the lower first installation component to the horizontal axis is greater than the distance from the bottom of the outer sheath main body to the horizontal axis. The loose tubes are located in the cavities.

[0007] For the above-mentioned optical cable that is convenient for installation, it is characterized in that the material of the loose tube is polybutylene terephthalate or modified polypropylene.

[0008] For the above-mentioned optical cable that is convenient for installation, it is characterized in that the optical communication component is G.652 type optical fiber or G.653 type optical fiber or G.654 type optical fiber or G.655 type optical fiber or G.656 type optical fiber or G.657 type optical fiber or A1a type optical fiber or A1b type optical fiber or A1c type optical fiber.

[0009] A cable that is easy to install, having an outer sheath, two insulating layers, and a conductor disposed within each insulating layer. It is characterized in that the outer sheath is composed of an outer sheath body, and two cavities are formed inside the outer sheath body. A plurality of columns are provided along the axial direction of the optical cable between the two cavities. On the left and right sides of the outer sheath body, two support components are respectively provided upward and downward. At the top of each support component, a first installation component is provided towards the vertical axis. The distance from the bottom edge of the upper first installation component to the horizontal axis is greater than the distance from the top of the outer sheath body to the horizontal axis. The distance from the top edge of the lower first installation component to the horizontal axis is greater than the distance from the bottom of the outer sheath body to the horizontal axis. The insulating layers are located within the cavities.

[0010] For the above-mentioned cable that is easy to install, it is characterized in that the insulating layer material is low-density polyethylene or medium-density polyethylene or high-density polyethylene or flame-retardant polyolefin or polyvinyl chloride.

[0011] For the above-mentioned cable that is easy to install, it is characterized in that the conductor material is copper or aluminum.

[0012] For the above-mentioned optical cable and cable that are easy to install, during laying, the upper or lower first installation component can be directly buckled onto the mounting plate to complete the laying of the optical cable. The width of the mounting plate is greater than the distance between the upper or lower first installation components and less than the distance between the inner walls of the two support components above or below.

[0013] For the above-mentioned optical cable and cable that are easy to install, it is characterized in that at the top of each support component, a second installation component is provided towards the horizontal axis. The distance from the left second installation component to the vertical axis is greater than the distance from the left support component to the vertical axis. The distance from the right second installation component to the vertical axis is greater than the distance from the right support component to the vertical axis.

[0014] For the above-mentioned optical cable and cable that are easy to install, during laying, the upper or lower first installation component can be directly buckled onto the mounting plate to complete the laying of the optical cable. The width of the mounting plate is greater than the distance between the upper or lower first installation components and less than the distance between the inner walls of the two support components above or below; or the left or right second installation component can be directly buckled onto the mounting plate to complete the laying of the optical cable, which is simple and convenient. The width of the mounting plate is greater than the distance between the left or right second installation components and less than the distance between the inner walls of the two support components on the left or right.

[0015] For the above-mentioned optical cable and cable that are easy to install, it is characterized in that the columns are disconnected in the middle to form two movable columns, and sleeves are sleeved outside the movable columns.

[0016] The above-mentioned optical cable and cable that are easy to install. When it is necessary to lay them in a pipeline with a width smaller than the width of the optical cable, the optical cable is squeezed from both left and right sides towards the middle until the width of the optical cable becomes smaller than the width of the pipeline, and then the pipeline laying can be completed. Due to the stress generated by the extrusion inside the outer sheath, the optical cable clings to the pipeline wall, which can play a role in fixing the optical cable; the sleeve can prevent the optical cable from receiving pressure from both left and right sides. When the width between the two movable columns is greater than the outer diameter of the loose tube, it can prevent the loose tube from moving to another cavity.

[0017] The above-mentioned optical cable and cable that are easy to install are characterized in that each end face of the movable column is provided with a first limiting component, and a spring is connected between the two first limiting components. The sleeve is composed of a sleeve body, and second limiting components are provided at the upper and lower ends of the sleeve body. The first limiting component and the second limiting component cooperate with each other to prevent the movable column from detaching from the sleeve.

[0018] The above-mentioned optical cable that is easy to install enhances the anti-side pressure performance at the middle position above and below the optical cable, and can also prevent the pressure of squeezing the optical cable from both left and right sides towards the middle from being too large, causing the movable column to detach from the sleeve. The spring enhances the recovery ability of the outer sheath, making the outer sheath cling more tightly to the pipeline wall and fixing it more firmly.

[0019] When laying the above-mentioned optical cable that is easy to install, it can also be directly laid flat on the ground, and the optical cable is supported by two supporting components below to prevent the outer sheath main body from directly contacting the ground and damaging the outer sheath main body; when the optical cable receives pressure, the pressure acts on both sides of the outer sheath main body of the optical cable through the supporting components on the upper and lower sides, and the internal loose tube and optical communication components will not be stressed. The upright column can also bear part of the side pressure for the optical cable. Therefore, the optical cable has strong anti-side pressure performance.

[0020] The above-mentioned optical cable and cable that are easy to install are characterized in that the material of the outer sheath main body 13, by weight, is: PE (polyethylene): 100, POE (polyolefin elastomer): 10, EVA (ethylene-vinyl acetate copolymer): 7, AS (styrene-acrylonitrile copolymer): 3, antioxidant: 4, plasticizer: 4.

[0021] Therefore, the present invention has beneficial effects such as simple structure, strong compressive ability, anti-wear, and can be laid in multiple ways. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structure schematic diagram of Embodiment 1 of the present invention.

[0023] Figure 2 It is a schematic diagram of the outer sheath structure of Embodiment 1 of the present invention.

[0024] Figure 3 It is a three-dimensional structure schematic diagram of Embodiment 2 of the present invention.

[0025] Figure 4 This is a schematic diagram of the outer protective layer structure of Embodiment 2 of the present invention.

[0026] Figure 5 This is a schematic three-dimensional structure diagram of Embodiment 3 of the present invention.

[0027] Figure 6 This is a schematic diagram of the outer protective layer structure of Embodiment 3 of the present invention.

[0028] Figure 7 This is a cross-sectional view of the column and the sleeve of Embodiment 3 of the present invention.

[0029] Figure 8 This is a schematic three-dimensional structure diagram of the column of Embodiment 4 of the present invention.

[0030] Figure 9 This is a schematic three-dimensional structure diagram of the sleeve of Embodiment 4 of the present invention.

[0031] Figure 10 This is a schematic three-dimensional installation structure diagram of Embodiment 1 of the present invention.

[0032] In the figure: 1. Outer protective layer, 11. First installation component, 12. Support component, 13. Outer protective layer main body, 131. Movable column, 132. First limiting component, 133. Spring, 14. Cavity, 15. Column, 151. Sleeve, 1511. Sleeve main body, 1512. Second limiting component, 16. Second installation component, 2. Loose tube, 3. Optical communication component, 4. Installation plate. Detailed implementation manners

[0033] Embodiment 1

[0034] Please refer to Figure 1 , Figure 2 , an optical cable that is easy to install, having an outer protective layer 1 and two loose tubes 2. At least one optical communication component 3 is provided in the loose tube 2. It is characterized in that the outer protective layer 1 is composed of an outer protective layer main body 13. Two cavities 14 are formed inside the outer protective layer main body 13. A plurality of columns 15 are arranged along the axial direction of the optical cable between the two cavities 14. Two support components 12 are respectively provided upward and downward on the left and right sides of the outer protective layer main body 13. A first installation component 11 is provided at the top of each support component 12 towards the vertical axis. The distance from the bottom edge of the upper first installation component 11 to the horizontal axis is greater than the distance from the top of the outer protective layer main body 13 to the horizontal axis. The distance from the top edge of the lower first installation component 11 to the horizontal axis is greater than the distance from the bottom of the outer protective layer main body 13 to the horizontal axis. The loose tube 2 is located in the cavity 14.

[0035] Please refer to Figure 10, during the laying of this embodiment, the first mounting member 11 above or below can be directly buckled to the mounting plate 4 to complete the laying of the optical cable. The width of the mounting plate 4 is greater than the distance between the first mounting members 11 above or below and less than the distance between the inner walls of the two support members 12 above or below.

[0036] Embodiment 2

[0037] Please see Figure 3 and Figure 4 , an optical cable that is easy to install, has an outer sheath 1 and two loose tubes 2. At least one optical communication component 3 is provided in the loose tube 2. It is characterized in that the outer sheath 1 is composed of an outer sheath main body 13. Two cavities 14 are formed inside the outer sheath main body 13. A plurality of columns 15 are arranged along the axial direction of the optical cable between the two cavities 14. Two support members 12 are respectively provided upward and downward on the left and right sides of the outer sheath main body 13. A first mounting member 11 is provided at the top of each support member 12 toward the vertical axis. The distance from the bottom edge of the first mounting member 11 above to the horizontal axis is greater than the distance from the top of the outer sheath main body 13 to the horizontal axis. The distance from the top edge of the first mounting member 11 below to the horizontal axis is greater than the distance from the bottom of the outer sheath main body 13 to the horizontal axis. A second mounting member 16 is provided at the top of each support member 12 toward the horizontal axis. The distance from the left second mounting member 16 to the vertical axis is greater than the distance from the left support member 12 to the vertical axis. The distance from the right second mounting member 16 to the vertical axis is greater than the distance from the right support member 12 to the vertical axis. The loose tube 2 is located in the cavity 14.

[0038] Please refer to Figure 10 , during the laying of this embodiment, the first mounting member 11 above or below can be directly buckled to the mounting plate 4 to complete the laying of the optical cable. The width of the mounting plate 4 is greater than the distance between the first mounting members 11 above or below and less than the distance between the inner walls of the two support members 12 above or below; or the second mounting member 16 on the left or right can be directly buckled to the mounting plate 4 to complete the laying of the optical cable, which is simple and convenient; the width of the mounting plate 4 is greater than the distance between the second mounting members 16 on the left or right and less than the distance between the inner walls of the two support members 12 on the left or right.

[0039] Embodiment 3

[0040] Please see Figure 5 、 Figure 6 and Figure 7, An optical cable that is easy to install, having an outer sheath 1 and two loose tubes 2. At least one optical communication component 3 is provided in the loose tube 2. It is characterized in that the outer sheath 1 is composed of an outer sheath main body 13. Two cavities 14 are formed inside the outer sheath main body 13. A plurality of columns 15 are arranged along the axial direction of the optical cable between the two cavities 14. The columns 15 are disconnected in the middle to form two movable columns 131. A sleeve 151 is sleeved outside the movable columns 131. Two support components 12 are respectively provided upward and downward on the left and right sides of the outer sheath main body 13. A first installation component 11 is provided on the top of each support component 12 towards the vertical axis. The distance from the bottom edge of the upper first installation component 11 to the horizontal axis is greater than the distance from the top of the outer sheath main body 13 to the horizontal axis. The distance from the top edge of the lower first installation component 11 to the horizontal axis is greater than the distance from the bottom of the outer sheath main body 13 to the horizontal axis. A second installation component 16 is provided on the top of each support component 12 towards the horizontal axis. The distance from the left second installation component 16 to the vertical axis is greater than the distance from the left support component 12 to the vertical axis. The distance from the right second installation component 16 to the vertical axis is greater than the distance from the right support component 12 to the vertical axis. The loose tube 2 is located in the cavity 14.

[0041] In this embodiment, when it is necessary to lay the optical cable in a pipeline with a width smaller than the width of the optical cable, the optical cable is squeezed from both left and right sides towards the middle until the width of the optical cable becomes smaller than the width of the pipeline, and then the pipeline laying can be completed. The optical cable is closely attached to the pipeline wall due to the stress generated by the extrusion inside the outer sheath 1, which can play a role in fixing the optical cable; the sleeve 151 can prevent the optical cable from receiving pressure from both left and right sides. When the width between the two movable columns 131 is greater than the outer diameter of the loose tube 2, it can prevent the loose tube 2 from moving to another cavity 14.

[0042] Embodiment 4

[0043] Please refer to Figure 8 and Figure 7, An optical cable that is easy to install, having an outer sheath 1 and two loose tubes 2. At least one optical communication component 3 is provided in the loose tube 2. It is characterized in that the outer sheath 1 is composed of an outer sheath main body 13. Two cavities 14 are formed inside the outer sheath main body 13. A plurality of columns 15 are arranged along the axial direction of the optical cable between the two cavities 14. The columns 15 are disconnected in the middle. The columns 15 are disconnected in the middle to form two movable columns 131. A first limiting component 132 is provided on the end face of each movable column 131. A spring 133 is connected between the two first limiting components 132. A sleeve 151 is sleeved outside the two movable columns 131. The sleeve 151 is composed of a sleeve main body 1511. Second limiting components 1512 are provided at the upper and lower ends of the sleeve main body 1511. The first limiting component 132 and the second limiting component 1512 cooperate with each other to prevent the movable column 131 from detaching from the sleeve 151. Two support components 12 are respectively provided upward and downward on the left and right sides of the outer sheath main body 13. A first installation component 11 is provided on the top of each support component 12 towards the vertical axis. The distance from the bottom edge of the upper first installation component 11 to the horizontal axis is greater than the distance from the top of the outer sheath main body 13 to the horizontal axis. The distance from the top edge of the lower first installation component 11 to the horizontal axis is greater than the distance from the bottom of the outer sheath main body 13 to the horizontal axis. A second installation component 16 is provided on the top of each support component 12 towards the horizontal axis. The distance from the left second installation component 16 to the vertical axis is greater than the distance from the left support component 12 to the vertical axis. The distance from the right second installation component 16 to the vertical axis is greater than the distance from the right support component 12 to the vertical axis. The loose tube 2 is located inside the cavity 14.

[0044] For the optical cable that is easy to install described in the above Embodiment 1 or Embodiment 2 or Embodiment 3 or Embodiment 4, it is characterized in that the material of the loose tube 2 is polybutylene terephthalate or modified polypropylene.

[0045] For the optical cable that is easy to install described in the above Embodiment 1 or Embodiment 2 or Embodiment 3 or Embodiment 4, it is characterized in that the optical communication component 3 is a G.652 type optical fiber or a G.653 type optical fiber or a G.654 type optical fiber or a G.655 type optical fiber or a G.656 type optical fiber or a G.657 type optical fiber or an A1a type optical fiber or an A1b type optical fiber or an A1c type optical fiber.

[0046] In this embodiment, the anti-side pressure performance at the middle position above and below the optical cable is enhanced, and it can also prevent the pressure of squeezing the optical cable from the left and right sides towards the middle from being too large, so that the movable column 131 detaches from the sleeve 151. The spring 133 enhances the recovery ability of the outer sheath 1, making the outer sheath 1 fit more closely to the pipe wall and fixing it more firmly.

[0047] When laying the above-mentioned Embodiment 1, Embodiment 2, Embodiment 3, or Embodiment 4, the optical cable can also be directly laid flat on the ground, and the optical cable is supported by two support components 12 below to prevent the outer sheath main body 13 from directly contacting the ground and damaging the outer sheath main body 13. When the optical cable is under pressure, the pressure acts on both sides of the outer sheath main body 13 of the optical cable through the support components 12 on the upper and lower sides, without causing the internal loose tube 2 and optical communication components 3 to be stressed, and without wearing the outer sheath main body 13. The upright post 15 can also bear part of the lateral pressure for the optical cable. Therefore, the optical cable has strong compressive performance.

[0048] Embodiment 5

[0049] An easily installable cable has an outer sheath 1 and two insulating layers. A conductor is provided inside the insulating layer. It is characterized in that the outer sheath 1 is composed of an outer sheath main body 13. Two cavities 14 are formed inside the outer sheath main body 13. A plurality of upright posts 15 are arranged along the axial direction of the optical cable between the two cavities 14. The upright posts 15 are disconnected in the middle. The upright posts 15 are disconnected in the middle to form two movable posts 131. A first limiting component 132 is provided at the end face of each movable post 131. A spring 133 is connected between the two first limiting components 132. A sleeve 151 is sleeved outside the two movable posts 131. The sleeve 151 is composed of a sleeve main body 1511. Second limiting components 1512 are provided at the upper and lower ends of the sleeve main body 1511. The first limiting component 132 and the second limiting component 1512 cooperate with each other to prevent the movable post 131 from detaching from the sleeve 151. Two support components 12 are respectively provided upward and downward on the left and right sides of the outer sheath main body 13. A first installation component 11 is provided at the top of each support component 12 facing the vertical axis. The distance from the bottom edge of the upper first installation component 11 to the horizontal axis is greater than the distance from the top of the outer sheath main body 13 to the horizontal axis. The distance from the top edge of the lower first installation component 11 to the horizontal axis is greater than the distance from the bottom of the outer sheath main body 13 to the horizontal axis. A second installation component 16 is provided at the top of each support component 12 facing the horizontal axis. The distance from the left second installation component 16 to the vertical axis is greater than the distance from the left support component 12 to the vertical axis. The distance from the right second installation component 16 to the vertical axis is greater than the distance from the right support component 12 to the vertical axis. The insulating layer is located inside the cavity 14.

[0050] For the easily installable cable described in the above-mentioned embodiment, it is characterized in that the insulating layer material is low-density polyethylene, medium-density polyethylene, high-density polyethylene, flame-retardant polyolefin, or polyvinyl chloride.

[0051] For the easily installable cable described in the above-mentioned embodiment, it is characterized in that the conductor material is copper or aluminum.

[0052] In order to endow the main body 13 of the outer sheath of an optical cable or a cable with better elasticity and processability, a new material for the main body of the outer sheath has been obtained through experiments. By weight, PE (polyethylene): 100 parts, POE (polyolefin elastomer): 10 parts, EVA (ethylene-vinyl acetate copolymer): 7 parts, AS (styrene-acrylonitrile copolymer): 3 parts, antioxidant: 4 parts, plasticizer: 4 parts.

[0053] The material of the outer sheath 1 of the optical cable has the following effects: the elastic modulus is 0.66 GPa, which is 0.69 to 0.79 times that of the elastic modulus of ordinary high-density polyethylene, with better elasticity and better processability.

[0054] The above-mentioned material for the main body of the outer sheath has high compressive performance. After being made into a block with a thickness of 5 cm and a length and width of 10 cm each, compared with HDPE of the same size in the prior art, the average pressure required to be pressed to a thickness of 4 cm, the former is 2.36 times that of the latter, and the average pressure required to be pressed to a thickness of 3 cm, the former is 4.81 times that of the latter. Therefore, the material for the main body of the outer sheath of this application has better compressive performance.

[0055] The present invention solves the problem that in the prior art, optical cables or cables cannot be applied to a variety of usage scenarios and have great limitations in laying.

[0056] The above embodiments are only the preferred technical solutions of the present invention and should not be regarded as limitations on the present invention. The protection scope of the present invention should be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. An optical cable that is easy to install, having an outer sheath (1) and two loose tubes (2), with at least one optical communication component (3) provided in the loose tube (2), characterized in that: The outer sheath (1) is composed of an outer sheath body (13). Two cavities (14) are formed inside the outer sheath body (13). A plurality of columns (15) are arranged along the axial direction of the optical cable between the two cavities (14). Two support components (12) are respectively arranged upward and downward on the left and right sides of the outer sheath body (13). A first mounting component (11) is arranged on the top of each support component (12) towards the vertical axis. The distance from the bottom edge of the upper first mounting component (11) to the horizontal axis is greater than the distance from the top of the outer sheath body (13) to the horizontal axis. The distance from the top edge of the lower first mounting component (11) to the horizontal axis is greater than the distance from the bottom of the outer sheath body (13) to the horizontal axis. The loose tube (2) is located inside the cavity (14). The material of the loose tube (2) is polybutylene terephthalate or modified polypropylene; the optical communication component (3) is G.652 type optical fiber or G.653 type optical fiber or G.654 type optical fiber or G.655 type optical fiber or G.656 type optical fiber or G.657 type optical fiber or A1a type optical fiber or A1b type optical fiber or A1c type optical fiber.

2. The optical cable convenient for installation according to claim 1, characterized in that: A second mounting component (16) is arranged on the top of each support component (12) towards the horizontal axis. The distance from the left second mounting component (16) to the vertical axis is greater than the distance from the left support component (12) to the vertical axis. The distance from the right second mounting component (16) to the vertical axis is greater than the distance from the right support component (12) to the vertical axis.

3. The optical cable convenient for installation according to claim 1, wherein: The column (15) is disconnected in the middle to form two movable columns (131), and a sleeve (151) is sleeved outside the movable columns (131).

4. The optical cable convenient for installation according to claim 3, characterized in that: A first limiting component (132) is arranged on the end face of each movable column (131). A spring (133) is connected between the two first limiting components (132). The sleeve (151) is composed of a sleeve body (1511). Second limiting components (1512) are arranged at the upper and lower ends of the sleeve body (1511). The first limiting component (132) and the second limiting component (1512) cooperate with each other to prevent the movable column (131) from detaching from the sleeve (151).

5. A cable easy to install according to claim 1, characterized in that: The material of the outer sheath body (13), by weight, is: PE (polyethylene): 100 parts, POE (polyolefin elastomer): 10 parts, EVA (ethylene-vinyl acetate copolymer): 7 parts, AS (styrene-acrylonitrile copolymer): 3 parts, antioxidant: 4 parts, plasticizer: 4 parts.

6. A cable that is easy to install, having an outer sheath (1) and two insulating layers, with a conductor disposed within each insulating layer, characterized in that The outer protective layer (1) is composed of an outer protective layer main body (13). Two cavities (14) are formed inside the outer protective layer main body (13). A plurality of columns (15) are arranged axially between the two cavities (14). On the left and right sides of the outer protective layer main body (13), two support components (12) are respectively arranged upward and downward. At the top of each support component (12), a first mounting component (11) is arranged towards the vertical axis. The distance from the bottom edge of the upper first mounting component (11) to the horizontal axis is greater than the distance from the top of the outer protective layer main body (13) to the horizontal axis. The distance from the top edge of the lower first mounting component (11) to the horizontal axis is greater than the distance from the bottom of the outer protective layer main body (13) to the horizontal axis. The insulating layer is located inside the cavity (14). The material of the insulating layer is low-density polyethylene or medium-density polyethylene or high-density polyethylene or flame-retardant polyolefin or polyvinyl chloride; the material of the conductor is copper or aluminum.

7. The cable according to claim 6, characterized in that: At the top of each support component (12), a second mounting component (16) is arranged towards the horizontal axis. The distance from the left second mounting component (16) to the vertical axis is greater than the distance from the left support component (12) to the vertical axis. The distance from the right second mounting component (16) to the vertical axis is greater than the distance from the right support component (12) to the vertical axis.

8. A cable that is easy to install according to claim 6, characterized in that: The column (15) is disconnected in the middle to form two movable columns (131). A sleeve (151) is sleeved outside the movable column (131).

9. A cable that is easy to install according to claim 7, characterized in that: A first limiting component (132) is arranged at the end face of each movable column (131). A spring (133) is connected between the two first limiting components (132). The sleeve (151) is composed of a sleeve main body (1511). Second limiting components (1512) are arranged at the upper and lower ends of the sleeve main body (1511). The first limiting component (132) and the second limiting component (1512) cooperate with each other to prevent the movable column (131) from detaching from the sleeve (151).

10. A cable that is easy to install according to claim 6, characterized in that: The material of the outer protective layer main body (13), by weight, is as follows: PE (polyethylene): 100 parts, POE (polyolefin elastomer): 10 parts, EVA (ethylene-vinyl acetate copolymer): 7 parts, AS (styrene-acrylonitrile copolymer): 3 parts, antioxidant: 4 parts, plasticizer: 4 parts.

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