Compression-resistant net-shaped optical fiber ribbon cable

Abstract

The invention relates to the technical field of cables, in particular to a compression-resistant net-shaped optical fiber ribbon cable which is reduced in cable diameter, good in flexibility, low in material consumption and low in production cost. Comprising a semicircular sheath, a base is integrally formed at the bottom of the sheath, a notch is formed between the base and the sheath, transmission assemblies are arranged at the two ends of the sheath, each transmission assembly comprises a sleeve and a plurality of round parallel belts arranged in the sleeve, and the round parallel belts are arranged in a linear array shape. The adjacent round parallel belts in each horizontal row are connected through hanging necks; two symmetrically-arranged supporting pieces are connected to the notch, the top ends of the supporting pieces incline towards the outer side so that a triangular structure can be formed between the sheath and the supporting pieces, and the surface of the sheath is sequentially provided with an isolation sleeve, a steel tape armoring layer, an outer sleeve and abrasion-resistant heat reflection coating.

Description

Technical Field

[0001] The invention relates to the technical field of cables, in particular to a compression-resistant mesh optical fiber ribbon cable. Background Art

[0002] With the development of the Internet and the continuous advancement of communication technology, ribbon optical cables have been widely used in the field of communications. As a solution that can meet the requirements of high-density transmission and provide greater bandwidth, ribbon optical cables will play an important role in 5G base stations, data centers and optical fiber networks. With the popularization and promotion of 5G, the market size of ribbon optical cables will continue to grow. In summary, ribbon optical cables have a wide range of applications and market prospects.

[0003] The existing ribbon optical cable is a flat structure. The flat shape of the optical fiber ribbon is fully covered, which consumes a lot of raw materials. The flat structure is large in size. The sleeve size is 3.0*0.3mm, which increases the sleeve diameter, increases the overall size of the cable, and increases the cost. In addition, the flat optical fiber ribbon cable is difficult to strip, has poor flexibility and is easy to bend, and the edge fibers are easily damaged, causing large attenuation, affecting performance. Traditional ribbon optical cables use fiber grease to block water, which is difficult to wipe clean during construction and even pollutes the environment, causing trouble to construction and increasing connection time. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a compression-resistant mesh optical fiber ribbon cable, which reduces the cable diameter, has good flexibility, uses less consumables, and reduces production costs.

[0005] The compression-resistant mesh optical fiber ribbon cable of the present invention comprises a semicircular sheath, a base is integrally formed at the bottom of the sheath, a notch is formed between the base and the sheath, transmission components are arranged at both ends of the sheath, the transmission components comprise a sleeve and a plurality of circular parallel belts arranged in the sleeve, the circular parallel belts are arranged in a linear array, and adjacent circular parallel belts in each horizontal row are connected by hanging necks; two symmetrically arranged support members are connected to the notch, the top ends of the support members are inclined outwardly to form a triangular structure between the sheath and the support members, and an isolation sleeve, a steel belt armor layer, an outer jacket and a wear-resistant heat-reflective coating are sequentially arranged on the surface of the sheath.

[0006] As a preferred solution of the present invention, the circular cable belt includes a wrapping sleeve and a cable core arranged in the wrapping sleeve, and a 0.01*0.01mm tearing groove is opened on the wrapping sleeve.

[0007] As a preferred solution of the present invention, the size of the wrapping sleeve is 1.2 mm, and the size of the hanging neck is 0.2*0.2 mm.

[0008] As a preferred solution of the present invention, a water-blocking yarn is arranged in the sleeve, and the water-blocking yarn is evenly distributed between the circular belt and the sleeve.

[0009] As a preferred solution of the present invention, a water blocking tape is arranged outside the casing.

[0010] As a preferred solution of the present invention, a non-metallic reinforcement is provided in the middle of the sheath.

[0011] As a preferred solution of the present invention, the sleeve is made of polypropylene.

[0012] As a preferred solution of the present invention, there are twelve cable cores in the wrapping sleeve.

[0013] As a preferred solution of the present invention, the water-blocking yarn is a 300D water-blocking yarn with a fine yarn count.

[0014] Compared with the prior art, the beneficial effects of the present invention are: the semicircular structure has good stability and good wind and pressure resistance. The non-metallic reinforcement FRP in the sheath is light in weight and has excellent tensile bearing performance. The circular parallel belts are set to greatly reduce the cable diameter, light weight, less consumables and low cost. At the same time, the circular parallel belts form a mesh, which has the advantages of good flexibility and good bending resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention;

[0016] Figure 2 It is a schematic diagram of the structure of the transmission component;

[0017] Markings in the attached drawings: 1. water-blocking tape; 2. tear groove; 3. sheath; 4. non-metallic reinforcement; 5. circular parallel tape; 6. water-blocking yarn; 7. sleeve; 8. support; 9. hanging neck; 10. isolation sleeve; 11. steel belt armor layer; 12. outer jacket; 13. wear-resistant heat-reflective coating. DETAILED DESCRIPTION

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0020] Secondly, the term "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0021] Example

[0022] Reference Figure 1 and Figure 2 This embodiment provides a compression-resistant mesh optical fiber ribbon cable, including a semicircular sheath 3, a base is integrally formed at the bottom of the sheath 3, a gap is formed between the base and the sheath 3, the base and the sheath 3 are integrally formed, and a solid foundation can be provided to enhance the structural stability of the entire cable, which helps to prevent the cable from being deformed when subjected to external pressure, especially during installation or laying, the design of the base can provide additional support for the internal transmission components, especially at the gap formed between the sheath and the base, which helps to maintain the position of the transmission components stable and avoid displacement or damage caused by external factors;

[0023] Transmission components are provided at both ends of the sheath 3, and the transmission components include a sleeve 7 and a plurality of circular parallel belts 5 arranged in the sleeve 7, the circular parallel belts 5 are arranged in a linear array, and the adjacent circular parallel belts 5 in each horizontal row are connected by a hanging neck 9; two symmetrically arranged support members 8 are connected to the notch, and the top ends of the support members 8 are inclined outward to form a triangular structure between the sheath 3 and the support members 8, and the surface of the sheath 3 is sequentially provided with an isolation sleeve 10, a steel belt armor layer 11, a jacket 12 and a wear-resistant heat-reflective coating 13;

[0024] A semicircular sheath 3 with a notch in the middle of the sheath 3, the sheath 3 has a semicircular structure, good stability, good wind and pressure resistance, and the semicircular sheath 3 can better disperse external pressure and reduce direct impact on internal components, and a non-metallic reinforcement 4 is arranged in the middle of the sheath 3, the non-metallic reinforcement 4 is made of FRP material, light weight, and excellent tensile bearing performance, the sheath 3 uses a highly flame retardant, low-smoke, halogen-free sheath 3 with excellent flame retardant performance; transmission components are arranged at both ends of the sheath 3, the transmission components include a sleeve 7 and a plurality of circular parallel belts 5 arranged in the sleeve 7, the circular parallel belts 5 are arranged in a linear array, and each horizontal row of adjacent circular parallel belts 5 are connected by a hanging neck 9, the circular parallel belt 5 includes a wrapping sleeve and a cable core arranged in the wrapping sleeve, and a 0.01*0.01mm tearing groove 2 is opened on the wrapping sleeve for easy stripping; the size of the wrapping sleeve is 1.2mm, the size of the hanging neck 9 is 0.2*0.2mm, and there are twelve cable cores in the wrapping sleeve, such as Figure 1As shown, the twelve cable cores are evenly distributed in the wrapping sleeve, and the cross-section of the wrapping sleeve is circular. Through the above arrangement, the circular parallel band 5 has a small structure size, and the overall size is 1.2mm. The middle connecting neck is 90.2*0.2mm. There are multiple connections, and the number of connections can be increased according to demand. After connection, it forms a mesh. The number of connections is determined according to the number of cores. The mesh structure is soft and has good flexibility, and will not bend. In this embodiment, there are four circular parallel bands 5 in each horizontal row, and four circular parallel bands 5 in each vertical row. Each horizontal row is recorded as a belt, and the size of each belt is 1.2*5.4mm. Each transmission component has 288 cable cores, and the size of the sleeve 7 is 9.5mm, which is 3mm smaller than the previous flat ribbon cable size of 12.5mm, so that the overall cable diameter is correspondingly smaller, reducing material costs.

[0025] The support member 8 forms a triangular structure between the sheath 3 and the support member 8. This geometric shape can significantly improve the stability of the entire cable. The triangle is one of the most stable structures and can effectively disperse and resist external pressure. Improve the pressure resistance: Since the support members 8 are inclined outward from the bottom of the sheath 3, they can effectively disperse the vertical pressure and prevent the sheath 3 from being deformed or damaged due to external heavy pressure, which is crucial for protecting the internal optical fiber components.

[0026] The material used for the isolation sleeve 10 is polyethylene, polyvinyl chloride and polyurethane, which can provide electrical insulation, prevent current leakage, reduce moisture penetration, protect the internal optical fiber from corrosion, and improve the overall mechanical strength and durability of the cable;

[0027] The steel belt armor layer 11 is made of galvanized steel belt or stainless steel belt, woven into a mesh and wrapped around the outside of the isolation sleeve 10, to enhance the mechanical strength of the cable, resist external pressure and damage, provide protection against rodent bites, and provide additional protection in underground or direct burial applications;

[0028] The material used for the jacket 12 is polyethylene, polyvinyl chloride and polyurethane, which provides additional mechanical protection, prevents wear and scratches, resists ultraviolet (UV) radiation, and prolongs the service life of the cable. Different colors can be selected as needed for easy identification and marking;

[0029] Wear-resistant heat-reflective coating 13 uses silicone resin, acrylic coating, fluoropolymer coating to reflect heat, reduce cable surface temperature, reduce thermal damage, increase surface hardness, improve wear resistance, reduce abrasion, improve the appearance quality of the cable, and make it more durable;

[0030] By providing protection measures such as the isolation sleeve 10, steel belt armor layer 11, outer jacket 12 and wear-resistant heat-reflective coating 13, the compression-resistant mesh optical fiber ribbon cable can withstand more external pressure and environmental influences, thereby ensuring the long-term reliability and transmission performance of the cable. The selection of these materials not only takes into account the mechanical strength, but also takes into account factors such as chemical corrosion resistance, temperature resistance and UV resistance, ensuring that the cable can maintain good performance in a variety of environments.

[0031] As a preferred solution of the present invention, a water-blocking yarn 6 is arranged in the sleeve 7, and the water-blocking yarn 6 is evenly distributed between the circular band 5 and the sleeve 7. The water-blocking yarn 6 is a 300D water-blocking yarn 6 with fine yarn count, fast water absorption speed, high expansion multiple, and strong tensile strength. There is a water-blocking belt 1 on the outside of the sleeve 7, which can achieve good water permeability.

[0032] As a preferred solution of the present invention, the sleeve 7 is made of polypropylene to improve flexibility.

[0033] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0034] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. Compression-resistant mesh optical fiber ribbon cable, characterized in that: The invention comprises a semicircular sheath (3), wherein a base is integrally formed at the bottom of the sheath (3), a notch is formed between the base and the sheath, and transmission components are arranged at both ends of the sheath (3), wherein the transmission components comprise a sleeve (7) and a plurality of circular parallel belts (5) arranged in the sleeve (7), wherein the circular parallel belts (5) are arranged in a linear array, and each row of adjacent circular parallel belts (5) are connected by a hanging neck (9); two symmetrically arranged support members (8) are connected at the notch, wherein the top ends of the support members (8) are inclined outwardly so as to form a triangular structure between the sheath (3) and the support members (8); and an isolation sleeve (10), a steel belt armor layer (11), an outer jacket (12) and a wear-resistant heat-reflective coating (13) are arranged in sequence on the surface of the sheath (3).

2. The compression-resistant mesh optical fiber ribbon cable according to claim 1, characterized in that: The circular parallel belt (5) comprises a wrapping sleeve and a cable core arranged in the wrapping sleeve, and a 0.01*0.01 mm tearing groove (2) is opened on the wrapping sleeve.

3. The compression-resistant mesh optical fiber ribbon cable according to claim 2, characterized in that: The size of the wrapping sleeve is 1.2 mm, and the size of the hanging neck (9) is 0.2*0.2 mm.

4. The compression-resistant mesh optical fiber ribbon cable according to claim 3, characterized in that: A water-blocking yarn (6) is arranged inside the sleeve (7), and the water-blocking yarn (6) is evenly distributed between the circular band (5) and the sleeve (7).

5. The compression-resistant mesh optical fiber ribbon cable according to claim 4, characterized in that: A water blocking tape (1) is arranged outside the sleeve (7).

6. The compression-resistant mesh optical fiber ribbon cable according to claim 5, characterized in that: A non-metallic reinforcement member (4) is arranged in the middle of the sheath (3).

7. The compression-resistant mesh optical fiber ribbon cable according to claim 6, characterized in that: The sleeve (7) is made of polypropylene.

8. The compression-resistant mesh optical fiber ribbon cable according to claim 3, characterized in that: There are twelve cable cores in the wrapping sleeve.

9. The compression-resistant mesh optical fiber ribbon cable according to claim 4, characterized in that: The water-blocking yarn (6) is a 300D water-blocking yarn with a fine yarn count.

Images