A cable protection sleeve and cable protection system thereof

Abstract

The utility model relates to a cable protection sleeve and cable protection system thereof, which comprises an optical unit and a cable accommodating part connected with the optical unit, the cable accommodating part is internally provided with an accommodating cavity, one end of the cable accommodating part is provided with an opening, the opening is communicated with the accommodating cavity, and the cable accommodating part is provided with an optical cable self-locking device at the opening to limit the cable body from moving out of the accommodating cavity. The optical cable self-locking device is arranged at the opening of the accommodating cavity, the opening width is smaller than the cable body diameter, when the cable is pressed and inserted into the accommodating cavity, the optical cable self-locking device firmly clamps the cable body to prevent it from moving out. The structure design simplifies the installation operation of the cable body to a one-way pressing action, without the need for fusion, excavation or re-laying of the entire line, thereby greatly shortening the construction time. The cable body is stably fixed in the accommodating cavity, effectively inhibiting the displacement of the cable body caused by wind vibration or temperature change in the overhead laying environment.

Description

Technical Field

[0001] This application relates to the field of optical cable line expansion, and in particular to a cable protection sleeve and its cable protection system. Background Technology

[0002] In modern communication systems, optical fiber cables are widely used due to their high bandwidth, resistance to electromagnetic interference, and long-distance transmission capabilities. However, with the rapid growth of communication services, insufficient communication capacity often arises on existing lines. The common practice is to lay new lines near the old ones, significantly increasing the cost of optical fiber cables and construction. Furthermore, the deployment scenarios for optical fibers are becoming increasingly diverse and complex, placing higher demands on their multi-scenario applications. Optical fibers require special structural designs to meet the needs of self-supporting overhead applications, further increasing their cost.

[0003] Most applications of optical cables are direct burial, duct, and overhead (self-supporting / non-self-supporting) laying, with overhead laying being more affected by weather conditions. In overhead applications, optical cables typically need to withstand greater mechanical stress (such as tension and vibration), environmental factors (such as temperature changes, humidity, and ultraviolet radiation), and potential external damage (such as bird pecking and wind impact), placing the most stringent requirements on them.

[0004] However, in practical applications, some routes on the same transmission line need to be laid overhead. In this case, the direct-buried / duct-mounted optical cables need to be replaced with overhead optical cables, which will lead to increased transmission loss and increased connection costs. Furthermore, when the line needs to be partially expanded (such as adding a branch), the entire new line must be laid, and it is not possible to achieve rapid expansion using existing optical cables. Utility Model Content

[0005] This application provides a cable protection sleeve and its cable protection system, which can solve the problem that there is no optical cable expansion device that can be directly adapted to overhead laying in the related technology, which leads to the need to replace the entire optical cable to meet the overhead demand, resulting in increased transmission loss, increased construction costs and low resource utilization.

[0006] In a first aspect, embodiments of this application provide a cable protection sleeve, which includes: an optical unit and a cable receiving part, the cable receiving part being connected to the optical unit, the cable receiving part having a receiving cavity inside, one end of the cable receiving part having an opening that communicates with the receiving cavity, and an optical cable self-locking device being provided on the cable receiving part and located at the opening to restrict the cable body from moving out of the receiving cavity from the opening.

[0007] In conjunction with the first aspect, in one embodiment, the optical cable self-locking device includes a limiting member disposed on the inner wall of the receiving cavity and located at the opening, the limiting member being protruding from the inner wall of the receiving cavity.

[0008] In conjunction with the first aspect, in one embodiment, the limiting member is made of an elastic material and has an inclined surface in the direction of optical cable insertion.

[0009] In conjunction with the first aspect, in one embodiment, the Shore hardness of the limiting member is within a first set range, wherein the first set range is 40 to 70.

[0010] In conjunction with the first aspect, in one embodiment, the optical unit includes: a cable core and a sheath layer, the sheath layer being sleeved on the outer peripheral surface of the cable core.

[0011] In conjunction with the first aspect, in one embodiment, the cable core includes: a sleeve, an auxiliary reinforcing element, and a central reinforcing member, wherein the auxiliary reinforcing element is disposed inside the sleeve; and the central reinforcing member is disposed inside the sleeve.

[0012] In conjunction with the first aspect, in one embodiment, the cable receiving portion is connected to the optical unit via a connecting portion; The connecting part is located on the center line of the optical unit and the cable receiving part, and the thickness of the connecting part is less than the minimum diameter of the optical unit and the cable receiving part. In conjunction with the first aspect, in one embodiment, the opening is located on the center line of the optical unit and the cable receptacle.

[0013] Secondly, embodiments of this application provide a cable protection system, which includes: a cable protective sleeve and a cable body as described above, wherein the cable body is disposed inside a receiving cavity; wherein the width of the opening is smaller than the diameter of the cable body.

[0014] In conjunction with the second aspect, in one embodiment, the ratio of the diameter of the cable body to the major axis diameter of the cable receiving portion is within a second set range, wherein the second set range is 0.8 to 0.95; The ratio of the width of the opening to the diameter of the cable body is within a third set range, which is 0.3 to 0.6.

[0015] The beneficial effects of the technical solutions provided in this application include: This application provides a cable protection sleeve and its cable protection system. By setting a self-locking device at the opening of the receiving cavity, making the opening width smaller than the diameter of the cable body, when the cable body is pressed into the receiving cavity, the self-locking device firmly locks the cable body to prevent it from moving out. This structural design simplifies the installation of the cable body to a one-way pressing action, eliminating the need for welding, excavation, or re-laying the entire line, thus significantly shortening the construction time. At the same time, the cable body is stably fixed in the receiving cavity, effectively suppressing the displacement of the cable body caused by wind vibration or temperature changes in the overhead laying environment, ensuring the continuity and stability of the optical signal transmission path, and significantly reducing signal attenuation during transmission. In addition, capacity expansion only requires adding a protective sleeve to the existing cable body, avoiding material waste and repeated construction caused by replacing the entire cable body, making efficient use of optical cable resources, and directly reducing the overall construction cost. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of a cable protection system provided in an embodiment of this application; Figure 2 This is a schematic diagram of the cable provided in an embodiment of this application; Figure 3 A schematic diagram of a cable protection sleeve provided in an embodiment of this application; Figure 4 This is a schematic diagram of a cable protection sleeve provided in an embodiment of this application.

[0018] In the diagram: 1. Optical unit; 10. Cable core; 100. Sheath; 101. Auxiliary reinforcing element; 102. Central reinforcing member; 11. Sheath layer; 2. Cable receiving part; 20. Receiving cavity; 21. Opening; 22. Optical cable self-locking device; 3. Connecting part; 4. Cable body. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] This application provides a cable protection sleeve and its cable protection system, which can solve the problem that there is no optical cable expansion device that can be directly adapted to overhead laying in the related technology, which leads to the need to replace the entire optical cable to meet the overhead demand, resulting in increased transmission loss, increased construction costs and low resource utilization.

[0021] See Figures 1-4 In a first aspect, embodiments of this application provide a cable protection sleeve, which includes: an optical unit 1 and a cable receiving part 2. The cable receiving part 2 is connected to the optical unit 1. A receiving cavity 20 is provided inside the cable receiving part 2. An opening 21 is provided at one end of the cable receiving part 2, and the opening 21 communicates with the receiving cavity 20. An optical cable self-locking device 22 is provided on the cable receiving part 2 and located at the opening 21 to prevent the cable body 4 from moving out of the receiving cavity 20 from the opening 21.

[0022] In this application, by setting a self-locking device 22 for the optical cable at the opening 21 of the receiving cavity 20, the width of the opening 21 is smaller than the diameter of the cable body 4. When the cable body 4 is pressed into the receiving cavity 20, the self-locking device 22 firmly locks the cable body 4 to prevent it from moving out. This structural design simplifies the installation of the cable body 4 to a one-way pressing action, eliminating the need for welding, excavation, or re-laying of the entire line, thus significantly shortening the construction time. At the same time, the cable body 4 is stably fixed in the receiving cavity 20, effectively suppressing the displacement of the cable body 4 caused by wind vibration or temperature changes in the overhead laying environment, ensuring the continuity and stability of the optical signal transmission path, and significantly reducing signal attenuation during transmission. In addition, the expansion operation only requires adding a protective sleeve to the existing cable body 4, avoiding material waste and repeated construction caused by replacing the entire cable body 4, making efficient use of optical cable resources, and directly reducing the overall construction cost.

[0023] In this embodiment, the optical unit 1 is a stranded optical cable. The optical unit 1 includes a cable core 10 and a sheath layer 11. The sheath layer 11 is sleeved on the outer surface of the cable core 10 to provide basic insulation and environmental protection.

[0024] The nominal thickness of the sheath layer 11 of optical unit 1 is 1.0 mm. This thickness effectively resists moisture penetration, ultraviolet aging, and daily mechanical wear in overhead laying environments, ensuring the stability and reliability of the optical fiber unit's transmission performance during long-term operation. The sheath layer 11 is made of medium-density polyethylene, which is beneficial for extrusion molding during the manufacturing process. Its Shore hardness D is in the range of 50 to 60. This hardness value ensures the uniformity and stability of extrusion molding during the manufacturing process, and at the same time, it makes the process of pressing the expansion optical cable into the cable receiving part 2 smooth and not easy to slip out during the construction stage, effectively matching the actual needs of the overhead laying environment.

[0025] The cable core 10 includes a sleeve 100, an auxiliary reinforcing element 101, and a central reinforcing member 102. The auxiliary reinforcing element 101 is disposed inside the sleeve 100 to enhance tensile strength; the central reinforcing member 102 is also disposed inside the sleeve 100 to form an integral support structure. In this embodiment, the sleeve 100 is fixed by an S or S / Z twisting method, which effectively disperses bending stress during the laying process and avoids local cracking of the sleeve 100; the auxiliary reinforcing element 101 can be aramid yarn or glass yarn, taking into account both flexibility and tensile strength, adapting to daily bending installation needs, and providing sufficient tensile force for construction and long-term application, thereby protecting the optical cable from stress; preferably, the central reinforcing member 102 can be a metal reinforcing member or a non-metal reinforcing member, wherein the metal reinforcing member can be galvanized steel strand, and the non-metal reinforcing member can be a glass fiber reinforced plastic rod. The former improves mechanical strength to cope with wind loads in the overhead environment, while the latter achieves lightweighting and enhances corrosion resistance, thereby optimizing the long-term stability and environmental adaptability of the optical cable in multiple scenarios such as direct burial, pipeline, and overhead.

[0026] Based on the above embodiments, in this embodiment, the cable receiving part 2 and the optical unit 1 are connected by the connecting part 3.

[0027] In this embodiment, the cable receiving portion 2 and the optical unit 1 are structurally connected by a connecting portion 3. This connecting portion 3 is located on the center line of the optical unit 1 and the cable receiving portion 2, and its thickness is strictly controlled to be less than the minimum diameter of either the optical unit 1 or the cable receiving portion 2. This design ensures uniform stress distribution during bending or overhead applications of the optical cable, effectively avoiding stress concentration problems caused by structural abrupt changes, while maintaining overall flexibility to adapt to daily installation and environmental changes. The thin structure of the connecting portion 3 ensures a stable transition between the optical unit 1 and the cable receiving portion 2, and reduces installation jams or minor deformations during long-term use caused by thickness mismatch, thereby improving the reliability and service life of the optical cable in complex scenarios.

[0028] Specifically, the nominal height of the connecting part 3 is 3.0 mm and the nominal thickness is 1.5 mm. This size effectively disperses bending stress in the actual application of overhead laying, facilitates construction, provides sufficient connection force, and maintains structural stability and connection reliability during long-term operation.

[0029] In this embodiment, the cable receiving part 2 is a crescent-shaped groove cavity formed by extruding the plastic sheath layer 11. This cavity is the receiving cavity 20. Its crescent-shaped structure design facilitates the convenient insertion of the expansion optical cable by pressing. An optical cable self-locking device 22 is set at the opening 21 to form a tight engagement with the inserted cable, effectively suppressing the slight displacement of the cable caused by wind vibration or temperature changes in the overhead laying environment, ensuring the long-term stable fixation of the expansion optical cable, thereby maintaining the continuity and reliability of optical signal transmission.

[0030] In addition, the edge of the opening 21 is rounded, which facilitates construction safety and effectively avoids the potential risk of sharp edges cutting construction workers in the actual application of overhead laying. At the same time, it reduces the frictional resistance during cable insertion, improves operational safety, and extends the structural integrity of the cable in long-term use.

[0031] Furthermore, based on the above embodiments, in this embodiment, the optical cable self-locking device 22 includes a limiting member disposed on the inner wall of the receiving cavity 20 and located at the opening 21. In some possible embodiments, the limiting member has an inverted triangular structure and protrudes from the inner wall of the receiving cavity 20.

[0032] The limiting component is made of elastic material and has an inclined surface in the direction of optical cable insertion. This allows the expansion optical cable to be smoothly guided into the cable during the pressing and insertion process. The elastic material provides moderate deformation to achieve a tight fit, ensuring long-term stable fixation of the expansion optical cable. The cable body 4 is smoothly inserted into the cable receiving part 2 through the crescent-shaped opening 21 using a pressing method. The inverted triangular structure of the optical cable self-locking device 22 forms an adaptive lock with the outer wall of the cable body 4 during insertion, preventing the cable body 4 from moving out of the receiving cavity 20.

[0033] Furthermore, the Shore hardness of the limiting component is within a first set range, which is set to 40~70. This hardness value ensures that the cable body 4 can be smoothly inserted without jamming during actual installation, while providing moderate elastic rebound to maintain the cable body 4 in a stable and fixed position within the receiving part. This avoids cable slippage due to excessively soft material or installation resistance caused by excessively hard material, thereby improving the durability and adaptability of the optical cable in complex laying scenarios.

[0034] Based on the above embodiments, in this embodiment, the opening 21 is located on the center line between the optical unit 1 and the cable receiving part 2, and the width of the opening 21 is smaller than the diameter of the cable body 4 to prevent the cable body 4 from falling off.

[0035] Furthermore, the ratio of the diameter of the cable body 4 to the major axis diameter of the cable receiving part 2 is within a second set range. In this embodiment, the second set range is 0.8 to 0.95, so that the cable body 4 can fit tightly against the inner wall of the receiving part to achieve stable embedding and avoid fixation failure due to excessive gap.

[0036] The ratio of the width of opening 21 to the diameter of cable body 4 is within a third set range. In this embodiment, the third set range is 0.3 to 0.6, providing moderate insertion resistance and self-locking capability, effectively coping with the slight movement of cable body 4 caused by wind vibration and temperature changes during overhead laying, and maintaining the long-term fixed reliability of the expansion optical cable. In this embodiment, the nominal width of opening 21 is 1.6mm. This width value is within the reasonable range of 0.3 to 0.6, which facilitates the smooth pressing and installation process of the expansion optical cable. At the same time, it effectively suppresses the slight movement of cable body 4 caused by wind vibration in the overhead laying environment, ensuring the long-term stable fixation of the expansion optical cable without displacement, and ensuring that cable body 4 will not fall out during long-term use.

[0037] It should be noted that the embodiments of this application are applicable to the installation of expanded round cables with a nominal outer diameter of 5.0 mm.

[0038] Secondly, embodiments of this application provide a cable protection system, which includes: a cable protective sleeve and a cable body 4 provided in any of the above embodiments of this application, wherein the cable body 4 is disposed inside the receiving cavity 20; wherein the width of the opening 21 is smaller than the diameter of the cable body 4.

[0039] In this application, by setting a self-locking device 22 for the optical cable at the opening 21 of the receiving cavity 20, the width of the opening 21 is smaller than the diameter of the cable body 4. When the cable body 4 is pressed into the receiving cavity 20, the self-locking device 22 firmly locks the cable body 4 to prevent it from moving out. This structural design simplifies the installation of the cable body 4 to a one-way pressing action, eliminating the need for welding, excavation, or re-laying of the entire line, thus significantly shortening the construction time. At the same time, the cable body 4 is stably fixed in the receiving cavity 20, effectively suppressing the displacement of the cable body 4 caused by wind vibration or temperature changes in the overhead laying environment, ensuring the continuity and stability of the optical signal transmission path, and significantly reducing signal attenuation during transmission. In addition, the expansion operation only requires adding a protective sleeve to the existing cable body 4, avoiding material waste and repeated construction caused by replacing the entire cable body 4, making efficient use of optical cable resources, and directly reducing the overall construction cost.

[0040] The ratio of the diameter of the cable body 4 to the major axis diameter of the cable receiving part 2 is within a second set range. In this embodiment, the second set range is 0.8 to 0.95, so that the cable body 4 can fit tightly against the inner wall of the receiving part to achieve stable embedding and avoid fixation failure due to excessive gap.

[0041] The ratio of the width of opening 21 to the diameter of cable body 4 is within a third set range. In this embodiment, the third set range is 0.3 to 0.6, providing moderate insertion resistance and self-locking capability, effectively coping with the slight movement of cable body 4 caused by wind vibration and temperature changes during overhead laying, and maintaining the long-term fixed reliability of the expansion optical cable. In this embodiment, the nominal width of opening 21 is 1.6mm. This width value is within the reasonable range of 0.3 to 0.6, which facilitates the smooth pressing and installation process of the expansion optical cable. At the same time, it effectively suppresses the slight movement of cable body 4 caused by wind vibration in the overhead laying environment, ensuring the long-term stable fixation of the expansion optical cable without displacement, and ensuring that cable body 4 will not fall out during long-term use.

[0042] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are 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. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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 between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0043] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0044] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A cable protection sleeve, characterized in that, It includes: Optical unit (1); The cable receiving part (2) is connected to the optical unit (1). The cable receiving part (2) has a receiving cavity (20) inside. One end of the cable receiving part (2) has an opening (21) and the opening (21) communicates with the receiving cavity (20). The cable receiving part (2) is provided with an optical cable self-locking device (22) that restricts the cable body (4) from moving out of the receiving cavity (20) from the opening (21) at the opening (21).

2. The cable protection sleeve as described in claim 1, characterized in that: The optical cable self-locking device (22) includes a limiting member disposed on the inner wall of the receiving cavity (20) and located at the opening (21), the limiting member being protruding from the inner wall of the receiving cavity (20).

3. The cable protection sleeve as described in claim 2, characterized in that: The limiting member is made of elastic material and has an inclined surface in the direction of optical cable insertion.

4. The cable protection sleeve as described in claim 3, characterized in that: The Shore hardness of the limiting member is within a first set range, which is 40 to 70.

5. The cable protection sleeve as described in claim 1, characterized in that, The optical unit (1) includes: Cable core (10); Sheath layer (11) is fitted onto the outer peripheral surface of the cable core (10).

6. The cable protective sleeve as described in claim 5, characterized in that, The cable core (10) includes: Sleeve (100); An auxiliary reinforcing element (101) is disposed inside the sleeve (100); A central reinforcing member (102) is disposed inside the sleeve (100).

7. The cable protection sleeve as described in claim 1, characterized in that: The cable receiving part (2) is connected to the optical unit (1) via a connecting part (3); The connecting part (3) is located on the center line of the optical unit (1) and the cable receiving part (2), and the thickness of the connecting part (3) is less than the minimum diameter of the optical unit (1) and the cable receiving part (2).

8. The cable protection sleeve as described in claim 1, characterized in that: The opening (21) is located on the center line of the optical unit (1) and the cable receiving part (2).

9. A cable protection system, characterized in that, It includes: The cable protection sleeve as described in any one of claims 1-8; The cable body (4) is disposed inside the receiving cavity (20); The width of the opening (21) is smaller than the diameter of the cable body (4).

10. The cable protection system as described in claim 9, characterized in that: The ratio of the diameter of the cable body (4) to the major axis diameter of the cable receiving part (2) is within a second set range, which is 0.8 to 0.

95. The ratio of the width of the opening (21) to the diameter of the cable body (4) is within a third set range, which is 0.3 to 0.6.

Images