Indoor and outdoor dual-purpose outer-layer stranded double-armored optical cable

Abstract

The utility model discloses an indoor and outdoor dual-purpose outer-layer stranded double-armored optical cable, which comprises a plurality of first central reinforcements, filling ropes, an aluminum-plastic composite pipe and a steel-plastic composite pipe, a plurality of optical fibers are arranged on the surfaces of the first central reinforcements, and a second central reinforcement is arranged in the middle of a plurality of loose tubes. The plurality of filling ropes and the plurality of loose tubes are staggered to form an annular arrangement, the aluminum-plastic composite tube is sleeved on the surfaces of the filling ropes and the loose tubes, the polyethylene inner sheath is sleeved on the surface of the aluminum-plastic composite tube, the steel-plastic composite tube is sleeved on the surface of the polyethylene inner sheath, and the outer sheath is sleeved on the surface of the steel-plastic composite tube; the loose tubes outside the optical fibers are separated by the filling sleeve, and the middle parts are separated by the flexible sleeve, so that the loose tubes can be prevented from being mutually extruded to cause damage to the optical fibers, the optical fibers are more comprehensively protected, the loose tubes are used outside the optical fibers for protection, each optical fiber can be independently used only by stripping the loose tubes, the complexity of optical fiber wiring is reduced, and the operation is simpler and more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of optical cables, in particular to an outer-layer twisted double-armored optical cable for indoor and outdoor use. Background Art

[0002] With the development of communication technology and the construction of a large number of base stations, the number of optical cable access points and access scenarios will become more complex, requiring more general-purpose indoor and outdoor optical cables.

[0003] A search of related technologies revealed a 5G environmentally friendly double-sided slotted indoor and outdoor optical cable (Announcement No. CN217506206U). This cable utilizes a fully dry structure with water-blocking yarn and tape, significantly improving the cable's overall lightning protection and environmental performance. The cable's internal structure is fully dry, offering excellent water-blocking and environmental performance, while the outer sheath, covered with water-blocking tape and aramid yarn, significantly enhances the cable's tensile strength.

[0004] However, in the above solution, the three double-layer loose tube optical cables are in contact with each other, and the three double-layer loose tube optical cables are protected by a reinforcement layer and an outer sheath. When the optical fiber is under pressure, the three double-layer loose tube optical cables are easily squeezed against each other, causing the double-layer loose tube optical cables to be easily damaged. The first water-blocking yarn is in the middle of the optical cable, and its waterproof effect is limited. The outer layer of the first optical fiber is covered with a four-layer structure, which makes it inconvenient to operate when peeling off the first optical fiber later. Utility Model Content

[0005] The purpose of the utility model is to provide an indoor and outdoor dual-use outer layer twisted double-armored optical cable to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions: an indoor and outdoor dual-use outer layer twisted double-armored optical cable, comprising a first central reinforcement member to improve the tensile strength of the optical cable, a plurality of the first central reinforcement members being provided, and a plurality of optical fibers being provided on the surface of the first central reinforcement member, a loose tube being sleeved on the surface of the plurality of optical fibers, and a second central reinforcement member being provided in the middle of the plurality of loose tubes to reduce the coating on the optical fibers and facilitate stripping of the optical fibers;

[0007] A plurality of filling ropes are provided, and the plurality of filling ropes and the plurality of loose tubes are staggered in a ring arrangement to avoid mutual squeezing of the loose tubes, which is beneficial to protecting the loose tubes;

[0008] An aluminum-plastic composite pipe is sleeved on the surface of the filling rope and the loose tube. A polyethylene inner sheath is sleeved on the surface of the aluminum-plastic composite pipe. The aluminum-plastic composite pipe and the polyethylene inner sheath have the advantages of high temperature resistance, high pressure resistance, corrosion resistance, etc., and protect the internal optical fiber. The surface of the polyethylene inner sheath is provided with a plurality of evenly arranged first concave-convex grooves. The water-blocking layer and the polyethylene inner sheath are connected by the first concave-convex grooves to improve the strength.

[0009] A steel-plastic composite pipe is sleeved on the surface of a polyethylene inner sheath. The surface of the steel-plastic composite pipe is provided with a plurality of evenly arranged second concave-convex grooves. The surface of the steel-plastic composite pipe is sleeved with an outer sheath. The outer sheath has a certain flexible buffering effect. The steel-plastic composite pipe has strong impact resistance and external pressure resistance and is not easily deformed by external pressure.

[0010] Furthermore, a plurality of reinforcing wires are sleeved on the surface of the filling rope, and the plurality of reinforcing wires are twisted and woven on the surface of the filling rope. A filling sleeve is sleeved on the surface of the reinforcing wires. When the filling sleeve is pulled out and used separately, the reinforcing wires can increase the tensile strength of the filling sleeve and prevent the filling sleeve from breaking.

[0011] Furthermore, a sleeve filler is provided inside the loose sleeve, and a reinforcing rib is provided in the sleeve filler. The reinforcing rib is arranged between two optical fibers. The sleeve filler and the reinforcing rib separate each optical fiber to facilitate stripping of the optical fiber, and the reinforcing rib prevents the pulled-out optical fiber from breaking.

[0012] Furthermore, the inner wall of the aluminum-plastic composite tube is provided with a binding yarn, which has the function of fixing and tightening the loose tube and the filling sleeve.

[0013] Furthermore, a water-blocking layer is provided between the steel-plastic composite tube and the polyethylene inner sheath to improve the waterproof capability of the optical fiber.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] (1) The outer sheath, steel-plastic composite tube, water-blocking layer, polyethylene inner sheath, and aluminum-plastic composite tube provide a combination of soft and hard protection for the optical fiber in the loose tube. The outer sheath is flexible and can buffer pressure. The steel-plastic composite tube provides hard protection and is not easily deformed under pressure, thus avoiding damage to the inside of the optical cable. The water-blocking layer improves the waterproof ability, ensuring that the optical cable can be used normally in complex environments.

[0016] (2) The loose tubes outside the optical fiber are separated by a filling sleeve, and the middle is separated by a flexible sleeve, which can prevent the loose tubes from squeezing each other and causing damage to the optical fiber, and provide more comprehensive protection for the optical fiber.

[0017] (3) The outside of the optical fiber is protected by a loose tube. When each optical fiber is used alone, the loose tube can be peeled off, which reduces the complexity of optical fiber wiring and makes operation easier. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional view of the utility model;

[0019] Figure 2 This is a structural diagram of the utility model steel-plastic composite pipe and polyethylene inner sheath;

[0020] Figure 3This is a schematic diagram of the structure in which the reinforcing wires of the utility model are arranged on the surface of the filling rope.

[0021] In the figure: 1. Outer sheath; 2. Steel-plastic composite pipe; 3. Water-blocking layer; 4. Polyethylene inner sheath; 5. Aluminum-plastic composite pipe; 6. Gauze; 7. Cable core filler; 8. Reinforcement ribs; 9. First central reinforcement member; 10. Optical fiber; 11. Loose tube; 12. Reinforcement wire; 13. Filling rope; 14. Filling sleeve; 15. Second central reinforcement member; 16. Flexible sleeve; 17. Second concave-convex groove; 18. First concave-convex groove. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Example:

[0024] See also Figure 1-3 The utility model provides a technical solution: an indoor and outdoor dual-use outer layer twisted double-armored optical cable, comprising a first central reinforcement member 9, a plurality of the first central reinforcement members 9 are provided, and a plurality of optical fibers 10 are provided on the surface of the first central reinforcement member 9, the first central reinforcement member 9 improves the tensile strength of the optical fibers 10, and a loose tube 11 is sleeved on the surface of the plurality of optical fibers 10, and the loose tube 11 can protect the optical fibers 10 from internal stress and external side pressure, ensuring that the optical fibers 10 can operate stably in various environments, preventing the optical fibers 10 from getting wet, and ensuring stable transmission quality of the optical fibers 10, a second central reinforcement member 15 is provided in the middle of the plurality of loose tubes 11, and the second central reinforcement member 15 prevents the plurality of loose tubes 11 from squeezing each other and preventing the plurality of loose tubes 11 from being damaged;

[0025] A plurality of filling ropes 13 are provided, and the plurality of filling ropes 13 and the plurality of loose tubes 11 are staggered in a ring arrangement. The filling ropes 13 cooperate with the second central reinforcement member 15 to fully separate the loose tubes 11, and prevent the loose tubes 11 from cracking when the optical cable is under heavy pressure;

[0026] An aluminum-plastic composite pipe 5 is sleeved on the surface of the filling rope 13 and the loose tube 11. A polyethylene inner sheath 4 is sleeved on the surface of the aluminum-plastic composite pipe 5. The aluminum-plastic composite pipe 5 has an anti-corrosion effect on the loose tube 11. The surface of the polyethylene inner sheath 4 is provided with a plurality of evenly arranged first concave-convex grooves 18. The first concave-convex grooves 18 can increase the connection strength between the water-blocking layer 3 and the polyethylene inner sheath 4.

[0027] The steel-plastic composite pipe 2 is sleeved on the surface of the polyethylene inner sheath 4. The surface of the steel-plastic composite pipe 2 is provided with a plurality of evenly arranged second concave-convex grooves 17. The surface of the steel-plastic composite pipe 2 is sleeved with an outer sheath 1. The outer sheath 1 increases the connection strength to the steel-plastic composite pipe 2 through the second concave-convex grooves 17. The outer sheath 1 is made of polyethylene to protect the optical cable from damage by solvents and wear.

[0028] In this embodiment, if Figure 1 As shown, a plurality of reinforcing wires 12 are sleeved on the surface of the filling rope 13, and a plurality of reinforcing wires 12 are twisted and woven on the surface of the filling rope 13. A filling sleeve 14 is sleeved on the surface of the reinforcing wires 12. The reinforcing wires 12 and the filling sleeve 14 improve the tensile strength of the optical cable, and at the same time will not make the optical cable too hard, making it convenient to roll up the optical cable.

[0029] In this embodiment, if Figure 1 As shown, a flexible sleeve 16 is sleeved on the surface of the second central reinforcement 15. The flexible sleeve 16 is attached to the surface of the loose tube 11 and the filling sleeve 14. The flexible sleeve 16 flexibly supports the loose tube 11 and the filling sleeve 14 and plays a certain buffering role.

[0030] In this embodiment, if Figure 1 As shown, the loose tube 11 is provided with a tube filler inside, and the tube filler is provided with a reinforcing rib 8. The reinforcing rib 8 is arranged between the two optical fibers 10, which can not only separate the optical fibers 10, but also improve the tensile strength for light. The optical fiber 10 is not easy to break when used alone.

[0031] In this embodiment, if Figure 1 As shown, the inner wall of the aluminum-plastic composite tube 5 is provided with a binding yarn 6, which bundles the loose tube 11 and the filling sleeve 14 to prevent the optical cable from being loose inside.

[0032] In this embodiment, if Figure 1 As shown, a cable core filler 7 is provided between the filling rope 13 and the loose tube 11 to ensure that the interior of the binding yarn 6 is circular, and to ensure that the loose tube 11 and the filling sleeve 14 will not move, thereby maintaining the compactness of the optical cable.

[0033] In this embodiment, if Figure 1 As shown, a water-blocking layer 3 is provided between the steel-plastic composite pipe 2 and the polyethylene inner sheath 4 to improve the waterproof capability of the optical cable.

[0034] Specifically, when in use, the outer sheath 1 provides flexible support and the steel-plastic composite tube 2 provides rigid support. The optical cable will not be easily deformed when subjected to pressure. The water-blocking layer 3 plays a waterproof role. The polyethylene inner sheath 4 and the aluminum-plastic composite tube 5 play an anti-corrosion role. The optical cable will not have any adverse problems when used for a long time in a complex environment. The loose tube 11 can be peeled out by peeling off the outer sheath 1, the steel-plastic composite tube 2, the water-blocking layer 3, the polyethylene inner sheath 4, the aluminum-plastic composite tube 5, the binding yarn 6, and the cable core filler 7. When the optical fiber 10 needs to be used alone, the loose tube 11 can be peeled off. The first central reinforcement member 9 improves the strength of the loose tube 11. When the optical fiber 10 inside the loose tube 11 is used alone, the optical fiber 10 can be prevented from being torn off. It is more convenient to use the optical fiber 10 after branching alone.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An indoor and outdoor dual-use outer layer twisted double-armored optical cable, characterized in that: include: A first central reinforcement member (9), wherein a plurality of the first central reinforcement members (9) are provided and a plurality of optical fibers (10) are provided on the surface of the first central reinforcement member (9), a loose tube (11) is sleeved on the surface of the plurality of optical fibers (10), and a second central reinforcement member (15) is provided in the middle of the plurality of loose tubes (11); A plurality of filling ropes (13) are provided, wherein the plurality of filling ropes (13) and the plurality of loose tubes (11) are staggered in a ring arrangement; An aluminum-plastic composite pipe (5), wherein the aluminum-plastic composite pipe (5) is sleeved on the surface of the filling rope (13) and the loose tube (11); a polyethylene inner sheath (4) is sleeved on the surface of the aluminum-plastic composite pipe (5); and a plurality of uniformly arranged first concave-convex grooves (18) are provided on the surface of the polyethylene inner sheath (4); A steel-plastic composite pipe (2) is sleeved on the surface of a polyethylene inner sheath (4), the surface of the steel-plastic composite pipe (2) is provided with a plurality of evenly arranged second concave-convex grooves (17), and the surface of the steel-plastic composite pipe (2) is sleeved with an outer sheath (1).

2. The indoor and outdoor dual-use outer layer twisted double-armored optical cable according to claim 1, characterized in that: The surface of the filling rope (13) is sleeved with a plurality of reinforcing wires (12), the plurality of reinforcing wires (12) are twisted and braided on the surface of the filling rope (13), and the surface of the reinforcing wires (12) is sleeved with a filling sleeve (14).

3. The indoor and outdoor dual-use outer layer twisted double-armored optical cable according to claim 2, characterized in that: The surface of the second central reinforcement member (15) is sleeved with a flexible sleeve (16), and the flexible sleeve (16) is fitted on the surfaces of the loose sleeve (11) and the filling sleeve (14).

4. The indoor and outdoor dual-use outer layer twisted double-armored optical cable according to claim 1, characterized in that: A sleeve filler is provided inside the loose sleeve (11), a reinforcing rib (8) is provided in the sleeve filler, and the reinforcing rib (8) is arranged between two optical fibers (10).

5. The indoor and outdoor dual-use outer layer twisted double-armored optical cable according to claim 1, characterized in that: The inner wall of the aluminum-plastic composite tube (5) is provided with a binding yarn (6).

6. The indoor and outdoor dual-use outer layer twisted double-armored optical cable according to claim 1, characterized in that: A cable core filler (7) is provided between the filling rope (13) and the loose tube (11).

7. The indoor and outdoor dual-use outer layer twisted double-armored optical cable according to claim 1, characterized in that: A water-blocking layer (3) is provided between the steel-plastic composite pipe (2) and the polyethylene inner sheath (4).

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