Anti-cracking optical cable

Abstract

The utility model discloses an anti-cracking optical cable, which belongs to the technical field of optical cables and comprises a plastic-coated steel belt pipe, a cable core mechanism is arranged on the inner side of the plastic-coated steel belt pipe, a plurality of support ring pipes are fixedly sleeved on the outer side of the plastic-coated steel belt pipe, a polyethylene sheath is fixedly sleeved on the outer sides of the plurality of support ring pipes, and the polyethylene sheath is sleeved on the outer side of the plastic-coated steel belt pipe. A plurality of inner V-shaped grooves are formed in the inner side face of the polyethylene sheath, a plurality of outer V-shaped grooves are formed in the outer side face of the polyethylene sheath, and an anti-cracking coating is arranged on the outer side of the polyethylene sheath. According to the utility model, the outer side of the polyethylene sheath is provided with the anti-cracking coating to ensure the anti-cracking effect of the optical cable, and the outer V-shaped groove and the inner V-shaped groove are used to ensure that the polyethylene sheath eliminates the stress when the polyethylene sheath expands with heat and contracts with cold due to the external environment. The anti-abrasion convex circle is used for preventing the anti-cracking coating on the outer side of the polyethylene sheath from being damaged due to direct friction with an external contact surface, and the practicability of the anti-cracking optical cable is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical cables, and more specifically to an anti-cracking optical cable. Background Art

[0002] Optical cables are manufactured to meet optical, mechanical or environmental performance specifications. They are communication cable components that use one or more optical fibers placed in a sheath as transmission media and can be used individually or in groups. The basic structure of optical cables is generally composed of cable cores, reinforcing steel wires, fillers and sheaths. In addition, there are waterproof layers, buffer layers, insulated metal wires and other components as needed. Different laying environments for optical cables have different requirements for their tolerance. Some optical cables will crack after being affected by the external environment, which affects the service life of the optical cables on the one hand and the stability of communications on the other. For this reason, we propose an anti-crack optical cable. Utility Model Content

[0003] In view of the problems mentioned in the above background technology, the purpose of the present utility model is to provide a crack-proof optical cable.

[0004] In order to solve the above problems, the utility model adopts the following technical solutions:

[0005] A crack-proof optical cable comprises a plastic-coated steel belt tube, a cable core mechanism is arranged on the inner side of the plastic-coated steel belt tube, a plurality of supporting ring tubes are fixedly sleeved on the outer side of the plastic-coated steel belt tube, a polyethylene sheath is fixedly sleeved on the outer side of the plurality of supporting ring tubes, a plurality of inner V-shaped grooves are arranged on the inner side surface of the polyethylene sheath, a plurality of outer V-shaped grooves are opened on the outer side surface of the polyethylene sheath, an anti-cracking coating is arranged on the outer side of the polyethylene sheath, and a plurality of steel wires are fixedly sleeved inside the polyethylene sheath.

[0006] As a preferred solution of the utility model, the cable core mechanism includes a plurality of loose tubes sleeved on the inner side of the plastic-coated steel belt tube, a plurality of optical fibers are sleeved on the inner side of the plurality of loose tubes, a tube filler is arranged between the loose tubes and the optical fibers, and a cable core filler is arranged between the plastic-coated steel belt tube and the loose tubes.

[0007] As a preferred solution of the utility model, a plurality of avoidance grooves are arranged between the plurality of support ring tubes, and the positions of the avoidance grooves are matched with the positions of the inner V-shaped groove and the outer V-shaped groove.

[0008] As a preferred solution of the utility model, a plurality of anti-wear convex circles are arranged on the outer side of the polyethylene sheath.

[0009] As a preferred solution of the utility model, a central reinforcing core is fixedly sleeved in the inner cavity of the plastic-coated steel belt tube and located inside the cable core filler.

[0010] As a preferred solution of the utility model, the plurality of loose tubes are evenly arranged in a circle with the plastic-coated steel strip tube as the center.

[0011] The advantages of the utility model are as follows: in the utility model, an anti-cracking coating is arranged on the outside of the polyethylene sheath to ensure the anti-cracking effect of the optical cable, an outer V-shaped groove and an inner V-shaped groove are used to ensure that the polyethylene sheath eliminates stress when it is thermally expanded or contracted by the external environment, and an anti-wear convex circle is used to prevent the anti-cracking coating on the outside of the polyethylene sheath from directly rubbing against the external contact surface to cause damage, thereby improving the practicality of the anti-cracking optical cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the plastic-coated steel belt tube of the utility model;

[0014] Figure 3 It is a cross-sectional schematic diagram of the polyethylene sheath of the utility model;

[0015] Figure 4 It is a structural schematic diagram of the supporting ring tube of the utility model.

[0016] Description of the numbers in the figure:

[0017] 1. Plastic-coated steel belt tube; 2. Cable core structure; 3. Support ring tube; 4. Polyethylene sheath; 5. External V-shaped groove; 6. Internal V-shaped groove; 7. Anti-cracking coating; 8. Steel wire; 9. Avoidance groove; 10. Anti-wear convex circle; 11. Loose tube; 12. Optical fiber; 13. Tube filler; 14. Cable core filler; 15. Center reinforcement core. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0021] Example:

[0022] See also Figure 1-4 A crack-proof optical cable comprises a plastic-coated steel belt tube 1, a cable core mechanism 2 is arranged on the inner side of the plastic-coated steel belt tube 1, a plurality of supporting ring tubes 3 are fixedly sleeved on the outer side of the plastic-coated steel belt tube 1, a polyethylene sheath 4 is fixedly sleeved on the outer side of the plurality of supporting ring tubes 3, a plurality of inner V-shaped grooves 6 are arranged on the inner side of the polyethylene sheath 4, a plurality of outer V-shaped grooves 5 are opened on the outer side of the polyethylene sheath 4, an anti-cracking coating 7 is arranged on the outer side of the polyethylene sheath 4, and a plurality of steel wires 8 are fixedly sleeved inside the polyethylene sheath 4.

[0023] In this embodiment, the anti-cracking coating 7 can use Beneq elastic anti-cracking waterproof coating.

[0024] For details, please refer to Figure 1 and Figure 2 The cable core mechanism 2 includes a plurality of loose tubes 11 sleeved on the inner side of the plastic-coated steel belt tube 1, a plurality of optical fibers 12 sleeved on the inner side of the plurality of loose tubes 11, a tube filler 13 is arranged between the loose tubes 11 and the optical fibers 12, and a cable core filler 14 is arranged between the plastic-coated steel belt tube 1 and the loose tubes 11.

[0025] In this embodiment, the loose tube 11 inside the plastic-coated steel belt tube 1 is fixed by using the cable core filler 14 , and the optical fiber 12 inside the loose tube 11 is fixed by using the tube filler 13 .

[0026] For details, please refer to Figure 1 , Figure 3 and Figure 4A plurality of avoidance grooves 9 are arranged between the plurality of support ring tubes 3 , and the positions of the avoidance grooves 9 match the positions of the inner V-shaped grooves 6 and the outer V-shaped grooves 5 .

[0027] In this embodiment, the optical cable can be bent at a certain angle by utilizing the cooperation between the avoidance groove 9, the inner V-shaped groove 6 and the outer V-shaped groove 5.

[0028] For details, please refer to Figure 1 A plurality of anti-wear convex circles 10 are arranged on the outer side of the polyethylene sheath 4 .

[0029] In this embodiment, the anti-wear convex circle 10 is used to prevent the outer side of the anti-cracking coating 7 from directly rubbing against the external contact surface.

[0030] For details, please refer to Figure 2 A central reinforcing core 15 is fixedly sleeved in the inner cavity of the plastic-coated steel belt tube 1 and inside the cable core filler 14 .

[0031] In this embodiment, the central reinforcing core 15 is used to ensure the tensile strength of the optical cable.

[0032] For details, please refer to Figure 2 , multiple loose tubes 11 are evenly arranged in a circle with the plastic-coated steel strip tube 1 as the center.

[0033] Working principle: During laying, the anti-wear convex circle 10 is used to prevent the anti-cracking coating 7 on the outside of the polyethylene sheath 4 from directly rubbing against the external contact surface. In addition, multiple external V-grooves 5 and internal V-grooves 6 are arranged on the outside and inside of the polyethylene sheath 4. The external V-grooves 5 and the internal V-grooves 6 ensure that the polyethylene sheath 4 eliminates stress when it expands and contracts due to the external environment. In addition, the anti-cracking coating 7 on the outside of the polyethylene sheath 4 can further prevent the outside of the polyethylene sheath 4 from cracking. At the same time, the steel wire 8 inside the polyethylene sheath 4 and the central reinforcement core 15 inside the plastic-coated steel belt tube 1 are used to ensure the tensile strength of the optical cable.

[0034] The above is only a preferred specific implementation method of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the utility model according to the technical solution and improved ideas of the utility model, which should be included in the protection scope of the utility model.

Claims

1. A crack-proof optical cable, characterized in that: The invention comprises a plastic-coated steel belt tube (1), wherein a cable core mechanism (2) is arranged on the inner side of the plastic-coated steel belt tube (1), a plurality of support ring tubes (3) are fixedly sleeved on the outer side of the plastic-coated steel belt tube (1), a polyethylene sheath (4) is fixedly sleeved on the outer side of the plurality of support ring tubes (3), a plurality of inner V-shaped grooves (6) are arranged on the inner side surface of the polyethylene sheath (4), a plurality of outer V-shaped grooves (5) are opened on the outer side surface of the polyethylene sheath (4), an anti-cracking coating (7) is arranged on the outer side of the polyethylene sheath (4), and a plurality of steel wires (8) are fixedly sleeved inside the polyethylene sheath (4).

2. The anti-crack optical cable according to claim 1, characterized in that: The cable core mechanism (2) comprises a plurality of loose tubes (11) sleeved on the inner side of a plastic-coated steel strip tube (1), a plurality of optical fibers (12) being sleeved on the inner side of the plurality of loose tubes (11), a tube filler (13) being arranged between the loose tubes (11) and the optical fibers (12), and a cable core filler (14) being arranged between the plastic-coated steel strip tube (1) and the loose tubes (11).

3. The anti-crack optical cable according to claim 1, characterized in that: A plurality of avoidance grooves (9) are arranged between the plurality of support ring tubes (3), and the positions of the avoidance grooves (9) are matched with the positions of the inner V-shaped groove (6) and the outer V-shaped groove (5).

4. The anti-crack optical cable according to claim 1, characterized in that: The outer side of the polyethylene sheath (4) is provided with a plurality of anti-wear convex circles (10).

5. The anti-crack optical cable according to claim 1, characterized in that: A central reinforcing core (15) is fixedly sleeved in the inner cavity of the plastic-coated steel belt tube (1) and inside the cable core filler (14).

6. The anti-cracking optical cable according to claim 2, characterized in that: The plurality of loose tubes (11) are evenly arranged in a circle with the plastic-coated steel strip tube (1) as the center.

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