cable

Abstract

The application relates to a cable, which comprises a cable core, a protective layer covering the outer side of the cable core, and at least two supporting components arranged at the outer periphery of the protective layer along the extension direction of the protective layer, wherein the outer periphery size of the supporting components is larger than the outer diameter of the protective layer. When the cable is laid in a pipe or a groove, the cable is supported by the at least two supporting components arranged at the outer periphery of the protective layer, the at least two supporting components directly contact the inner wall of the pipe, the protective layer is separated from the inner wall of the pipe, and the contact area between the surface of the cable and the inner wall of the pipe or the inner wall of the groove is reduced. Moreover, the outer side of the cable core is provided with the protective layer, the cable core directly acts on the supporting components after being extruded by ice, the extrusion force is transmitted to the protective layer through the supporting components, the protective layer buffers the extrusion force, and the damage of the cable is reduced.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a cable. Background Technology

[0002] Railway digital signal cables are capable of transmitting analog signals (1MHz), digital signals (2Mbit / s), and rated voltage AC 750V or DC 1100V electrical energy. They are suitable for transmitting control information, monitoring information, and electrical energy between railway signaling automatic block systems, axle counting, station coding, computer interlocking, microcomputer monitoring, centralized dispatching, dispatching supervision, high-power electric and other related signaling equipment and control devices.

[0003] In related technologies, the existing utility model patent with authorization announcement number CN201610270677.6 discloses a cold-resistant railway digital signal cable. The cable uses glass wool tubing in both the cable assembly and the cable sheath as cold-proof materials, providing dual protection. It is lightweight, antibacterial and mildew-proof, aging-resistant, corrosion-resistant, and environmentally friendly. It also has A1 fire resistance, is permanently non-flammable, has low moisture absorption, low thermal conductivity, strong insulation performance, and strong resistance to compression and impact. Even if the pipe or trench freezes, the cable will not be squeezed and deformed, or the cable core will break.

[0004] However, when using the aforementioned cables, the cables are laid directly inside the trench or pipe during installation, causing the cable surface to come into direct contact with the trench or pipe wall. Although a protective outer layer is provided, the protective structure of the outer layer is relatively simple. In extremely cold regions, the cables are still susceptible to the effects of water freezing, which can cause the cable surface to be squeezed and deformed. Under prolonged compression, the outer protective layer of the cable is still prone to damage, resulting in a certain limitation in the protective effect. Utility Model Content

[0005] Based on this, this application provides a cable to solve the problem of poor protective effect of the outer protective layer of the cable.

[0006] This application provides a cable, which includes: a cable core; a protective layer covering the outside of the cable core; and at least two support components, which are spaced apart along the extension direction of the protective layer on the outer periphery of the protective layer, and the outer periphery dimension of the support components is larger than the outer diameter of the protective layer.

[0007] In one embodiment, the support assembly includes a support sleeve and a plurality of support plates. The support sleeve is fitted around the outer periphery of the protective layer, and the plurality of support plates are spaced apart around the outer periphery of the support sleeve along the circumferential direction.

[0008] In one embodiment, the support sleeve includes a connecting sleeve and a support ring. The connecting sleeve is fitted around the outer periphery of the protective layer, and the support ring is fitted around the outer periphery of the connecting sleeve. The outer periphery of the support ring has multiple support grooves, and multiple support plates are correspondingly disposed in the multiple support grooves.

[0009] In one embodiment, the support assembly further includes a rubber pad disposed on the side of the support plate away from the support sleeve.

[0010] In one embodiment, the protective layer includes a first buffer layer, an outer partition layer, and a second buffer layer arranged sequentially from the outside to the inside, with the support component sleeved on the outer periphery of the first buffer layer and the second buffer layer covering the outer side of the cable core.

[0011] In one embodiment, the protective layer further includes an outer insulation layer, with the first buffer layer covering the outer periphery of the outer insulation layer and the outer insulation layer located between the first buffer layer and the outer partition layer; and / or, the protective layer further includes a glass wool layer located between the second buffer layer and the cable core; the glass wool layer covering the outer side of the cable core.

[0012] In one embodiment, when the protective layer includes a glass wool layer, the protective layer further includes an inner insulation layer located between the second buffer layer and the glass wool layer; and / or, when the protective layer includes a glass wool layer, the protective layer further includes an inner partition layer located between the glass wool layer and the cable core, the inner partition layer covering the outside of the cable core.

[0013] In one embodiment, the cable further includes a connecting assembly comprising a connecting ring slidably disposed on the outer periphery of the protective layer, wherein the protective layers of two adjacent cables are connected by the connecting ring.

[0014] In one embodiment, the connecting assembly further includes an adjusting ring, which is sleeved on the outer periphery of the protective layer, and a connecting ring is slidably sleeved on the outer periphery of the adjusting ring; one of the adjusting ring and the connecting ring is provided with an adjusting groove, and the other of the adjusting ring and the connecting ring is provided with an adjusting protrusion, which is slidably disposed in the adjusting groove.

[0015] In one embodiment, the connection assembly further includes a sealing gasket for clamping between two connecting loops on two adjacent cables; and / or, the connection assembly further includes a connector that passes through the connecting loop and is used to connect the two connecting loops of two adjacent cables.

[0016] Applying the technical solution of this application, when the cable is laid inside a conduit, the cable is supported by at least two support components disposed on the outer periphery of the protective layer. These support components directly contact the inner wall of the conduit. Since the outer circumferential dimension of the support components is larger than the outer diameter of the protective layer, direct contact between the protective layer and the inner wall of the conduit can be avoided, thus separating the protective layer from the inner wall of the conduit. This reduces the contact area between the cable surface and the inner wall of the conduit or trench. Even if ice forms on the inner wall of the conduit, the smaller contact area between the cable surface and the inner wall makes the cable easier to install and remove. Furthermore, because a protective layer is disposed on the outside of the cable core, when the cable core is compressed by ice, the compression force acts directly on the support components, which then transfer the compression force to the protective layer. The protective layer buffers the compression force, reducing damage to the cable. Compared to cables in related technologies, the protective layer and support components improve the protection of the internal cable core. Attached Figure Description

[0017] Figure 1 A schematic diagram of the cable structure provided in an embodiment of this application is shown.

[0018] Figure 2 A partial structural schematic diagram of the cable provided in an embodiment of this application is shown.

[0019] Figure 3 This illustration shows another part of the structure of the cable provided in the embodiment of this application.

[0020] Figure 4 A partial structural schematic diagram of the cable connection assembly provided in an embodiment of this application is shown.

[0021] Figure 5 This illustration shows another part of the structural diagram of the cable connection assembly provided in an embodiment of this application.

[0022] Explanation of reference numerals in the attached figures:

[0023] 10. Cable core; 20. Protective layer; 21. First buffer layer; 22. Outer insulation layer; 23. Outer partition layer; 24. Second buffer layer; 25. Glass wool layer; 26. Inner insulation layer; 27. Inner partition layer; 30. Support assembly; 31. Support sleeve; 311. Connecting sleeve; 312. Support ring; 32. Support plate; 33. Rubber pad; 40. Connecting assembly; 41. Connecting ring; 42. Adjusting ring; 43. Adjusting groove; 44. Adjusting protrusion; 45. Sealing gasket; 46. Connector; 461. Gasket. Detailed Implementation

[0024] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0025] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0026] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0029] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0030] See Figure 1 , Figure 1 A schematic diagram of a cable structure according to an embodiment of this application is shown. This application provides a cable including a cable core 10, a protective layer 20, and at least two support components 30. The protective layer 20 covers the outer side of the cable core 10. At least two support components 30 are spaced apart along the extending direction of the protective layer 20 on the outer periphery of the protective layer 20, and the outer periphery dimension of the support components 30 is larger than the outer diameter of the protective layer 20.

[0031] Applying the technical solution of this application, when the cable is laid inside a pipe, the cable is supported by at least two support components 30 disposed on the outer periphery of the protective layer 20. These support components 30 directly contact the inner wall of the pipe. Since the outer periphery of the support components 30 is larger than the outer diameter of the protective layer 20, direct contact between the protective layer 20 and the inner wall of the pipe can be avoided, thus separating the protective layer 20 from the inner wall of the pipe. This reduces the contact area between the cable surface and the inner wall of the pipe or trench. Even if the inner wall of the pipe freezes, the small contact area between the cable surface and the inner wall makes the cable easier to install and remove. Furthermore, because the protective layer 20 is disposed on the outer side of the cable core 10, when the cable core 10 is compressed by ice, it directly acts on the support components 30, and the compression force is transmitted to the protective layer 20 through the support components 30. The protective layer 20 buffers the compression force, reducing damage to the cable. Compared to cables in related technologies, the protective layer 20 and support components 30 improve the protection capability of the internal cable core 10.

[0032] The cable core 10 includes multiple sub-cores, each of which can perform different functions such as power transmission and signal transmission.

[0033] It should be noted that the outer perimeter of the support component 30 can be understood as twice the dimension between the surface of the support component 30 away from the cable core 10 and the center of the cable core 10.

[0034] In some embodiments, the cable may include only two support components 30, which are respectively disposed near the end of the protective layer 20 to support and isolate the protective layer 20. In some embodiments, the cable may include three or more support components 30, which can be arranged at equal intervals around the outer periphery of the protective layer 20 to achieve better support and isolation. The specific number is determined according to the actual situation.

[0035] Figure 2 A partial structural schematic diagram of the cable provided in an embodiment of this application is shown. (In conjunction with...) Figure 1 and Figure 2 As shown, the support assembly 30 includes a support sleeve 31 and multiple support plates 32. The support sleeve 31 is fitted around the outer periphery of the protective layer 20, and the multiple support plates 32 are spaced apart along the circumferential direction of the support sleeve 31 around the outer periphery of the support sleeve 31. By using the above-described support assembly 30, by placing multiple support plates 32 on the support sleeve 31, the support plates 32 are avoided from being directly placed on the protective layer 20, thus protecting the protective layer 20 and preventing damage to the protective layer 20 by the support plates 32, while also preventing the protective layer 20 from becoming excessively thick.

[0036] It should be noted that, since multiple support plates 32 are provided on the outer periphery of the support sleeve 31, and the support plates 32 are spaced apart along the circumference of the support sleeve 31, the protective layer 20 can contact the inner wall of the pipe through any support plate 32, regardless of how the cable is placed inside the pipe, so that the support plate 32 can separate the protective layer 20 from the inner wall of the pipe.

[0037] Since the support sleeve 31 is fixedly connected to the outer periphery of the protective layer 20, in some embodiments, the support sleeve 31 can be integrally formed with the protective layer 20.

[0038] It should be noted that, since the support sleeve 31 has multiple support plates 32 arranged circumferentially, the outer circumferential dimension of the support assembly 30 can be understood as twice the dimension from the surface of any support plate 32 away from the cable core 10 to the center of the cable core 10. It is understood that the dimension from the center of the cable core 10 differs for different positions of the support plate 32 on the surface away from the cable core 10. In this case, twice the minimum dimension from the surface of the support plate 32 away from the cable core 10 to the center of the cable core 10 is used as the outer circumferential dimension of the support assembly 30.

[0039] Combination Figure 1 and Figure 2 As shown, the support sleeve 31 includes a connecting sleeve 311 and a support ring 312. The connecting sleeve 311 is fitted around the outer periphery of the protective layer, and the support ring 312 is fitted around the outer periphery of the connecting sleeve 311. The outer periphery of the support ring 312 has multiple support grooves, and multiple support plates 32 are correspondingly arranged in the multiple support grooves. By using the above-mentioned support sleeve 31, the connecting sleeve 311 isolates the support ring 312 and the protective layer 20, which can form an isolation and buffering effect, preventing the force of the support ring 312 when tightening from directly acting on the protective layer 20, thereby protecting the protective layer 20.

[0040] In some embodiments, the support ring 312 is made of a rigid material and the connecting sleeve 311 is made of a flexible material, so that the connecting sleeve 311 can provide a buffering effect for the protective layer 20.

[0041] Combination Figure 1 As shown, the support assembly 30 also includes a rubber pad 33, which is disposed on the side of the support plate 32 away from the support sleeve 31. The rubber pad 33 can improve the buffering and anti-slip performance between the support plate 32 and the inner wall of the pipe, thereby enhancing the fixing effect of the cable in the pipe and preventing the cable from moving in the pipe due to small forces.

[0042] The number of rubber pads 33 is set according to the actual situation. The rubber pads 33 should completely cover the surface of the support plate 32.

[0043] Figure 3 This illustration shows a further portion of the cable structure provided in an embodiment of this application. (In conjunction with...) Figure 2 and Figure 3 As shown, the protective layer 20 includes a first buffer layer 21, an outer partition layer 23, and a second buffer layer 24 arranged sequentially from the outside to the inside. The support assembly 30 is sleeved on the outer periphery of the first buffer layer 21, and the second buffer layer 24 covers the outer side of the cable core 10. Using the aforementioned protective layer 20, both the first buffer layer 21 and the second buffer layer 24 can provide a buffering effect, and the outer partition layer 23 can enhance the support strength between the first buffer layer 21 and the second buffer layer 24.

[0044] When the cable is subjected to ice pressure or other external impact, the pressure or impact is transmitted to the first buffer layer 21 through the support plate 32. The first buffer layer 21 firstly buffers the pressure or impact directly, reducing the force transmitted to the inside. Then, the reduced pressure or impact acts on the second buffer layer 24, which can further enhance the impact on the cable core 10 and reduce the damage caused by the pressure or impact to the cable core 10.

[0045] The first buffer layer 21 and the second buffer layer 24 mainly buffer mechanical stress, including extrusion force and impact force, by absorbing deformation.

[0046] Since both the first buffer layer 21 and the second buffer layer 24 can absorb deformation, in order to enhance the support strength of the protective layer 20, an outer partition layer 23 is provided between the first buffer layer 21 and the second buffer layer 24. The outer partition layer 23 can provide high mechanical strength to play a supporting role between the first buffer layer 21 and the second buffer layer 24.

[0047] Combination Figure 2 and Figure 3 As shown, the protective layer 20 also includes an outer insulating layer 22, which is located between the first buffer layer 21 and the outer spacer layer 23. The outer insulating layer 22 provides electrical insulation.

[0048] Combination Figure 2 and Figure 3 As shown, the protective layer 20 also includes a glass wool layer 25, which is located between the second buffer layer 24 and the cable core 10. The glass wool layer 25 covers the outside of the cable core 10. The glass wool layer 25 can serve as a cold-proof material for the cable core 10, effectively insulating it from cold.

[0049] Combination Figure 2 and Figure 3 As shown, the protective layer 20 also includes an inner insulating layer 26, which is located between the second buffer layer 24 and the glass wool layer 25. The inner insulating layer 26 can provide electrical insulation again.

[0050] Combination Figure 2 and Figure 3 As shown, the protective layer 20 also includes an inner partition layer 27, which is located between the glass wool layer 25 and the cable core 10, and covers the outside of the cable core 10. The inner partition layer 27 can enhance the supporting strength.

[0051] In some embodiments, multiple snap-fit ​​slots can be provided on the inner side of the inner partition 27. Since the multiple sub-cable cores are arranged circumferentially, the multiple snap-fit ​​slots can also be arranged circumferentially. This allows the outer sub-cable cores to be snapped into their corresponding snap-fit ​​slots, thereby creating a limiting effect to better fix and protect the cable core 10.

[0052] Figure 4 A partial structural schematic diagram of the cable connection assembly provided in an embodiment of this application is shown. Figure 5 This illustration shows a further portion of the structural diagram of the cable connection assembly provided in an embodiment of this application. (In conjunction with...) Figure 4 and Figure 5As shown, the cable also includes a connecting assembly 40, which includes a connecting ring 41 slidably disposed on the outer periphery of the protective layer 20. The protective layers 20 of two adjacent cables are connected by the connecting ring 41. The connecting assembly 40 can be used to connect two cable segments. By adjusting the position of the connecting ring 41 relative to the protective layer 20, the connecting ring 41 can be moved to the end of the protective layer 20, thereby connecting the two cable segments.

[0053] Each cable segment is equipped with a connecting ring 41 near its end. When two cable segments are connected, the two cable segments can be connected by connecting the connecting rings 41 on adjacent cable segments.

[0054] It should be noted that, since the connecting component 40 connects two adjacent cable segments and the supporting component 30 supports a single cable segment, at least two supporting components 30 are located inside the two sets of connecting components 40, so that the connecting ring 41 can slide easily and there will be no relative interference between the connecting component 40 and the supporting component 30.

[0055] Combination Figure 4 and Figure 5 As shown, the connecting assembly 40 also includes an adjusting ring 42, which is sleeved on the outer periphery of the protective layer 20. The connecting ring 41 is slidably sleeved on the outer periphery of the adjusting ring 42. One of the adjusting ring 42 and the connecting ring 41 is provided with an adjusting groove 43, and the other of the adjusting ring 42 and the connecting ring 41 is provided with an adjusting protrusion 44, which is slidably disposed within the adjusting groove 43. By providing the adjusting ring 42, the connecting ring 41 can slide on the adjusting ring 42, which avoids placing the connecting ring 41 directly on the protective layer 20 and prevents damage to the protective layer 20 during the sliding process of the connecting ring 41. Furthermore, the setting of the adjusting ring 42 can also conveniently limit the sliding distance of the connecting ring 41, preventing the sliding distance of the connecting ring 41 from being too large, thus facilitating operation by the operator.

[0056] The length of the adjusting groove 43 is greater than the length of the adjusting protrusion 44, allowing the adjusting protrusion 44 to slide within the adjusting groove 43. In some embodiments, the adjusting groove 43 has closed ends, which limit the adjustment protrusion 44 and prevent it from coming out of the adjusting groove 43.

[0057] It should be noted that the number of adjusting grooves 43 and adjusting protrusions 44 can be determined according to the actual situation. In some embodiments, only one set of adjusting grooves 43 and adjusting protrusions 44 may be provided. In some embodiments, multiple sets of adjusting grooves 43 and adjusting protrusions 44 may be provided. Multiple sets of adjusting grooves 43 and adjusting protrusions 44 are arranged in a circumferential manner.

[0058] To facilitate assembly, the adjusting protrusion 44 can be configured as a strip structure, and the adjusting groove 43 can be set on the outer wall of the adjusting ring 42.

[0059] In some embodiments, buffer pads are provided at both ends of the adjusting protrusion 44. The buffer pads can provide a buffering effect for the adjusting protrusion 44, avoid hard contact between the adjusting protrusion 44 and the groove wall of the adjusting groove 43, and form a protection.

[0060] Combination Figure 5 As shown, the connecting assembly 40 also includes a sealing gasket 45, which is used to clamp between two connecting rings 41 on two adjacent cables. Thus, when two adjacent cables are connected, the sealing gasket 45 can be clamped between the two connecting rings 41 of the two adjacent cables, and the sealing gasket 45 plays a sealing role, improving the sealing performance between the two connecting rings 41 and preventing moisture and impurities from entering the cable through the gap between the two connecting rings 41.

[0061] Combination Figure 5 As shown, the connecting assembly 40 also includes a connector 46, which is used to connect two connecting loops 41 of two adjacent cables. Thus, when it is necessary to connect two adjacent cables, the connector 46 can be simply inserted into the two connecting loops 41 of the two adjacent cables, offering advantages such as simple structure and ease of operation.

[0062] In some embodiments, the connector 46 is a connecting bolt, and the number of connecting bolts can be set according to specific circumstances. For example, two connecting bolts can be used to improve connection performance.

[0063] Among them, a washer 461 can be fitted on the connecting bolt to prevent the connecting bolt from loosening and further improve the connection performance.

[0064] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A cable, characterized in that, The cable includes: Cable core; A protective layer is applied to the outside of the cable core. At least two support components are provided at intervals along the extension direction of the protective layer on the outer periphery of the protective layer, and the outer periphery dimension of the support components is larger than the outer diameter of the protective layer.

2. The cable according to claim 1, characterized in that, The support assembly includes a support sleeve and a plurality of support plates. The support sleeve is fitted around the outer periphery of the protective layer, and the plurality of support plates are spaced apart around the outer periphery of the support sleeve along the circumferential direction.

3. The cable according to claim 2, characterized in that, The support sleeve includes a connecting sleeve and a support ring. The connecting sleeve is fitted around the outer periphery of the protective layer, and the support ring is fitted around the outer periphery of the connecting sleeve. The outer periphery of the support ring has multiple support grooves, and multiple support plates are correspondingly arranged in the multiple support grooves.

4. The cable according to claim 2, characterized in that, The support assembly also includes a rubber pad, which is disposed on the side of the support plate away from the support sleeve.

5. The cable according to any one of claims 1 to 4, characterized in that, The protective layer includes a first buffer layer, an outer partition layer, and a second buffer layer arranged sequentially from the outside to the inside. The support component is sleeved on the outer periphery of the first buffer layer, and the second buffer layer covers the outer side of the cable core.

6. The cable according to claim 5, characterized in that, The protective layer further includes an outer insulating layer, which is located between the first buffer layer and the outer spacer layer; and / or, The protective layer also includes a glass wool layer, which is located between the second buffer layer and the cable core; the glass wool layer covers the outside of the cable core.

7. The cable according to claim 6, characterized in that, When the protective layer includes the glass wool layer, the protective layer further includes an inner insulation layer located between the second buffer layer and the glass wool layer; and / or, When the protective layer includes the glass wool layer, the protective layer also includes an inner partition layer, which is located between the glass wool layer and the cable core, and covers the outside of the cable core.

8. The cable according to any one of claims 1 to 4, characterized in that, The cable also includes a connecting assembly, which includes a connecting ring slidably disposed on the outer periphery of the protective layer.

9. The cable according to claim 8, characterized in that, The connecting assembly further includes an adjusting ring, which is sleeved on the outer periphery of the protective layer, and a connecting ring is slidably sleeved on the outer periphery of the adjusting ring; one of the adjusting ring and the connecting ring is provided with an adjusting groove, and the other of the adjusting ring and the connecting ring is provided with an adjusting protrusion, which is slidably disposed in the adjusting groove.

10. The cable according to claim 8, characterized in that, The connection assembly further includes a sealing gasket for clamping between two connecting loops on two adjacent cables; and / or The connection assembly further includes a connector that passes through the connection ring and is used to connect two connection rings of two adjacent cables.

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