A split-type track optical cable

Abstract

This utility model belongs to the field of optical communication technology, and particularly relates to a split-type track optical cable. A split-type track optical cable includes: a load-bearing member for providing mechanical suspension support for the optical cable; at least one optical cable body, the optical cable body having an internal optical fiber unit for transmitting optical signals; wherein the load-bearing member has at least one guide rail extending along its length, and the optical cable body has a corresponding slide rail matching the guide rail, the slide rail allowing the optical cable body to slide detachably along the guide rail and be fixed to the load-bearing member.

Description

Technical Field

[0001] This utility model belongs to the field of optical communication technology, and in particular relates to a split-type track optical cable. Background Technology

[0002] With the rapid advancement of modern communication networks, especially the "fiber to the home" project, the demand for optical cables, as the core carrier of information transmission, is increasing daily. In complex application environments, aerial laying has become an important method for optical cable deployment in urban, rural, and suburban areas due to its relatively economical and convenient deployment. Especially in the "last mile" of the access network, self-supporting butterfly optical cables, which integrate the load-bearing reinforcement and the optical fiber core into the same sheath, have gained widespread application due to their compact structure and ability to be directly suspended between poles.

[0003] However, existing self-supporting optical cables have also revealed many inherent defects in large-scale applications. First, the integrated structure of the load-bearing reinforcement and the optical cable body results in a large overall weight and diameter of the cable, limiting its tensile strength and making it difficult to achieve long-span overhead applications. This necessitates segmented suspension using densely packed utility poles or hanging points, which not only occupies valuable land and pole resources but also significantly increases initial construction and material costs. Second, when multiple such optical cables are laid in parallel, the lines often become intertwined and difficult to identify and manage, posing significant challenges to later fault diagnosis, line maintenance, and even cable expansion. Furthermore, under prolonged self-weight and environmental stress, the optical cable is prone to excessive sag, potentially leading to fiber stress fatigue, increased transmission loss, or even breakage. Moreover, after the end of its service life, the reinforcement and cable materials are difficult to separate effectively, hindering environmentally friendly recycling.

[0004] In view of this, the core technical problem that urgently needs to be solved by those skilled in the art is how to provide a brand-new optical cable system structure that can fundamentally overcome the inherent drawbacks of the rigid integration of the load-bearing part and the communication part in the existing technology. This would not only effectively reduce deployment costs and enable larger spans, but also greatly improve the deployment density, management convenience and flexibility of the overhead line, and simplify the entire life cycle management process of the optical cable. Utility Model Content

[0005] The purpose of this invention is to address the above-mentioned shortcomings and provide a split-type track optical cable.

[0006] A split-type track optical cable, comprising:

[0007] A load-bearing component, which provides mechanical suspension support for the optical cable;

[0008] At least one optical cable body, wherein the optical cable body is provided with an optical fiber unit for transmitting optical signals;

[0009] The load-bearing member is provided with at least one guide rail extending along its length direction, and the optical cable body is provided with a corresponding slide rail that matches the guide rail. The slide rail is used to allow the optical cable body to slide along the guide rail in a separable manner and be fixed to the load-bearing member.

[0010] Furthermore, the guide rail portion of the load-bearing member is a T-shaped protrusion, and the slide portion of the optical cable body is a T-shaped groove that matches the T-shaped protrusion.

[0011] Furthermore, the optical cable body includes an outer sheath, and an optical fiber unit, a first reinforcing member, and a second reinforcing member enclosed within the outer sheath.

[0012] Furthermore, the optical fiber unit is disposed at the geometric center of the optical cable body; the first reinforcing member and the second reinforcing member are symmetrically disposed on both sides of the optical fiber unit with the optical fiber unit as the center.

[0013] Furthermore, two T-shaped grooves are symmetrically formed on the outer sheath of the optical cable body. These two T-shaped grooves are arranged opposite each other with the optical fiber unit as the center, so that the optical cable body can be installed on the load-bearing member in both directions.

[0014] Furthermore, the outer sheath is also provided with a tear groove extending along its length, the tear groove extending to the T-shaped groove.

[0015] Furthermore, the tear groove is a V-shaped groove with an included angle of 10°-20°.

[0016] Furthermore, the load-bearing component is a central steel wire, and a plurality of T-shaped protrusions are arranged in a ring array along the outer periphery of the central steel wire for mounting a plurality of optical cable bodies.

[0017] Furthermore, the central steel wire and the multiple T-shaped protrusions on its outer periphery are integrally formed metal structures.

[0018] Furthermore, the inner contour dimension of the T-shaped groove is 0.2-0.4 mm smaller than the outer contour dimension of the T-shaped protrusion to achieve an interference fit.

[0019] The beneficial effects of this utility model are:

[0020] This invention provides a split-type track-mounted optical cable. By structurally separating the load-bearing component providing mechanical suspension support from the optical cable body containing internal fiber optic units, and employing detachable guide rails and sliding sections, it fundamentally solves many drawbacks caused by the integrated structure of traditional optical cables. This split structure allows the load-bearing component to be independently reinforced to withstand greater tensile forces, thereby significantly increasing the span of overhead laying, reducing the number of supporting facilities such as utility poles, and effectively lowering construction costs. Simultaneously, the detachable installation method of the optical cable body allows for independent installation, maintenance, replacement, or upgrades of individual lines without requiring operation of the main load-bearing cable or adjacent optical cables, greatly improving maintenance flexibility and efficiency. Furthermore, this structure allows for the convenient mounting of multiple optical cables on a single load-bearing component, significantly increasing the utilization rate of overhead space and making line management clear and orderly. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a split-type track optical cable structure.

[0022] Figure 2 This is a schematic diagram of a load-bearing component.

[0023] Figure 3 This is a schematic diagram of the optical cable's main structure.

[0024] Reference numerals: 100, split-type track optical cable; 110, load-bearing component; 111, guide rail section; 120, optical cable body; 121, optical fiber unit; 122, slide section; 123, outer sheath; 124, first reinforcing member; 125, second reinforcing member; 126, tear groove. Detailed Implementation

[0025] The following detailed description of a split-type track optical cable according to the present invention, in conjunction with embodiments, is provided. For the sake of simplicity, this document cannot exhaustively list all alternative technical features and implementation schemes included in the present invention. Therefore, those skilled in the art should understand that any technical feature and implementation scheme within this embodiment does not limit the scope of protection of the present invention, which includes all alternative technical features and implementation schemes adopted by those skilled in the art without inventive effort. Specifically, any implementation scheme obtained by replacing any technical feature in the present invention or by combining any two or more technical features provided by the present invention should be within the scope of protection of the present invention.

[0026] This embodiment provides a split-type track optical cable 100, including:

[0027] Load-bearing component 110 is used to provide mechanical suspension support for the optical cable;

[0028] At least one optical cable body 120, the optical cable body 120 having an optical fiber unit 121 for transmitting optical signals inside;

[0029] The load-bearing member 110 is provided with at least one guide rail portion 111 extending along its length direction, and the optical cable body 120 is provided with a corresponding slide portion 122 that matches the guide rail portion 111. The slide portion 122 is used to allow the optical cable body 120 to slide along the guide rail portion 111 in a separable manner and be fixed on the load-bearing member 110.

[0030] Please see Figures 1 to 3 This embodiment provides a split-type track optical cable 100, the core feature of which is that the optical cable system consists of two core parts that can be separated from each other but can be precisely matched: a load-bearing member 110 and one or more optical cable bodies 120.

[0031] Reference Figure 1 The load-bearing component 110 is the skeleton of the entire optical cable system, and its dedicated function is to provide excellent mechanical suspension support to achieve long-span overhead installation. In this embodiment, the load-bearing component 110 is specifically represented by a central steel wire. In order to suspend the optical cable body 120, the load-bearing component 110 is provided with a guide rail portion 111 extending along its axial direction. To achieve a stable locking effect, the cross-section of the guide rail portion 111 is designed as a T-shaped protrusion. More preferably, in order to achieve high-density line deployment, four T-shaped protruding guide rail portions 111 are evenly distributed in a ring array along the outer periphery of the load-bearing component 110, so that the cross-section of the entire load-bearing component 110 is cross-shaped. This structure allows four optical cable bodies 120 to be installed simultaneously on the same load-bearing component 110, which greatly improves space utilization. To ensure the highest structural strength and weather resistance, the entire load-bearing component 110, including its central axis and the four T-shaped protruding guide rails 111 thereon, is preferably made of metal material and integrally formed in one piece through processes such as extrusion or drawing, thus avoiding stress concentration points and corrosion risks that may be caused by welding or splicing.

[0032] In some embodiments, the guide rail portion 111 of the load-bearing member 110 is a T-shaped protrusion, and the slide portion 122 of the optical cable body 120 is a T-shaped groove that matches the T-shaped protrusion.

[0033] Reference Figure 1-3 The optical cable body 120 is the main functional component for transmitting optical signals. It has a slide rail 122 that matches the guide rail 111 of the load-bearing member 110. The slide rail 122 has a T-shaped groove structure. The internal structure of the optical cable body 120 includes an outer sheath 123, and optical fiber units 121, a first reinforcing member 124, and a second reinforcing member 125 enclosed by the outer sheath 123.

[0034] In some embodiments, the optical cable body 120 includes an outer sheath 123, and an optical fiber unit 121, a first reinforcing member 124, and a second reinforcing member 125 enclosed within the outer sheath 123.

[0035] In some embodiments, the optical fiber unit 121 is disposed at the geometric center of the optical cable body 120; the first reinforcing member 124 and the second reinforcing member 125 are symmetrically disposed on both sides of the optical fiber unit 121 with the optical fiber unit 121 as the center.

[0036] To minimize the stress on the fiber optic unit 121 when subjected to external forces such as bending on the optical cable body 120, it is positioned at the geometric center of the entire cross-section of the optical cable body 120. The first reinforcing member 124 and the second reinforcing member 125 are arranged horizontally symmetrically on both sides of the fiber optic unit 121. These two reinforcing members provide the necessary axial tensile strength and anti-flattening performance for the optical cable body 120, ensuring that the fiber core is not damaged during cable threading or installation.

[0037] In some embodiments, two T-shaped grooves are symmetrically formed on the outer sheath 123 of the optical cable body 120. The two T-shaped grooves are arranged opposite each other with the optical fiber unit 121 as the center, so that the optical cable body 120 can be installed on the load-bearing member 110 in both directions.

[0038] To facilitate installation and maintenance, T-shaped groove slides 122 are provided on the outer sheath 123 of the optical cable body 120 in this embodiment at two opposite positions, one above and one below. This symmetrical design allows on-site construction personnel to install the optical cable body 120 onto the load-bearing component 110 from both directions without needing to distinguish directions, thus improving fault tolerance and installation efficiency.

[0039] In some embodiments, the outer sheath 123 is further provided with a tear groove 126 extending along its length direction, the tear groove 126 extending to the T-shaped groove.

[0040] In some embodiments, the tear groove 126 is a V-shaped groove with an included angle of 10°-20°.

[0041] In addition, a tear groove 126 extending along its length is provided on the outer sheath 123. This tear groove 126 is preferably a V-shaped groove with an included angle of 15°, and its depth extends precisely to the opening of the T-shaped groove slide section 122. When it is necessary to remove the optical cable body 120 from the load-bearing member 110, construction personnel can easily tear open part of the outer sheath 123 using the tear groove 126, thereby exposing and releasing the T-shaped groove from its restraints, making the operation convenient.

[0042] In some embodiments, the load-bearing member 110 is a central steel wire, and a plurality of T-shaped protrusions are arranged in a ring array around the outer periphery of the central steel wire for mounting a plurality of optical cable bodies 120.

[0043] In some embodiments, the central steel wire and its multiple T-shaped protrusions on the periphery are integrally formed metal structures.

[0044] In some embodiments, the inner contour dimension of the T-shaped groove is 0.2-0.4 mm smaller than the outer contour dimension of the T-shaped protrusion to achieve an interference fit.

[0045] The installation process of the split-type track optical cable 100 provided in this embodiment is as follows: During installation, the construction personnel first erect and tension the load-bearing component 110 between the poles. Then, a section of the optical cable body 120 is taken out, and the T-shaped groove slide portion 122 at one end is aligned with any T-shaped protruding guide rail portion 111 on the load-bearing component 110. The optical cable body 120 is then slid into the guide rail portion 111 along its axial direction. To achieve a firm fixation after installation, the internal contour dimension of the T-shaped groove is designed to be slightly smaller than the external contour dimension of the T-shaped protrusion by 0.2-0.4 mm. Utilizing the elasticity of the outer sheath material 123 (such as HDPE), the T-shaped groove slide portion 122 will undergo slight elastic deformation when fitted into the T-shaped protruding guide rail portion 111, thereby forming a tight interference fit. This method of connection relies on the elasticity of the material itself to firmly lock the optical cable body 120 onto the load-bearing member 110, effectively resisting loosening caused by factors such as wind and vibration. At the same time, it can still be pulled out by force when needed, achieving a perfect combination of separability and stability.

[0046] For those skilled in the art, other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations, but obvious variations or modifications derived therefrom are still within the scope of protection of the claims of this invention.

Claims

1. A split-type track optical cable, characterized by, include: A load-bearing component, which provides mechanical suspension support for the optical cable; At least one optical cable body, wherein the optical cable body is provided with an optical fiber unit for transmitting optical signals; The load-bearing member is provided with at least one guide rail extending along its length direction, and the optical cable body is provided with a corresponding slide rail that matches the guide rail. The slide rail is used to allow the optical cable body to slide along the guide rail in a separable manner and be fixed to the load-bearing member.

2. The split tube optical cable of claim 1, wherein, The guide rail portion of the load-bearing component is a T-shaped protrusion, and the slide portion of the optical cable body is a T-shaped groove that matches the T-shaped protrusion.

3. The split tube optical cable of claim 2, wherein, The optical cable body includes an outer sheath, and an optical fiber unit, a first reinforcing member, and a second reinforcing member enclosed within the outer sheath.

4. The split tube optical cable of claim 3, wherein, The optical fiber unit is located at the geometric center of the optical cable body; the first reinforcing member and the second reinforcing member are symmetrically arranged on both sides of the optical fiber unit with the optical fiber unit as the center.

5. The split tube optical cable of claim 3, wherein, Two T-shaped grooves are symmetrically formed on the outer sheath of the optical cable body. The two T-shaped grooves are arranged opposite each other with the optical fiber unit as the center, so that the optical cable body can be installed on the load-bearing member in both directions.

6. The split tube optical cable of claim 3, wherein, The outer sheath is also provided with a tear groove extending along its length, the tear groove extending to the T-shaped groove.

7. The split tube optical cable of claim 6, wherein, The tear groove is a V-shaped groove with an included angle of 10°-20°.

8. The split tube optical cable of claim 2, wherein, The load-bearing component is a central steel wire, and multiple T-shaped protrusions are arranged in a ring array around the outer periphery of the central steel wire for mounting multiple optical cable bodies.

9. The split tube optical cable of claim 8, wherein, The central steel wire and the multiple T-shaped protrusions on its outer periphery are integrally formed metal structures.

10. The split tube optical cable of claim 2, wherein, The inner contour dimension of the T-shaped groove is 0.2-0.4 mm smaller than the outer contour dimension of the T-shaped protrusion to achieve an interference fit.

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