CN210427883U

CN210427883U - Reinforced skeleton remote optical cable

Info

Publication number: CN210427883U
Application number: CN201920467358.3U
Authority: CN
Inventors: 符剑松; 谢华; 杨向荣
Original assignee: Yangtze Optical Fibre and Cable Co Ltd
Current assignee: Yangtze Optical Fibre and Cable Co Ltd
Priority date: 2019-04-09
Filing date: 2019-04-09
Publication date: 2020-04-28
Anticipated expiration: 2029-04-09

Abstract

The utility model discloses a reinforced framework remote optical cable, which comprises a first optical fiber unit, a second optical fiber unit and a special-shaped framework sheath (2), wherein the special-shaped framework sheath (2) comprises a main sleeve (201) and six reinforcing wings (202); the first optical fiber unit is arranged in the main sleeve (201); one convex strip is arranged on the same side of the reinforcing wing (202), and a second colored optical fiber (1a) is arranged in each convex strip. The utility model discloses an optical cable is drawn far to strenghthened type skeleton, stretch-proofing performance and anti side pressure performance are good, easily branch, and the comprehensive properties is excellent.

Description

Reinforced skeleton remote optical cable

Technical Field

The utility model relates to an optical fiber cable especially relates to an optical cable zooms out.

Background

With the development of the 4G and 5G era, the establishment of remote base stations is also increasing, and the original remote optical cables do not meet the requirements of customers, so that a novel optical cable needs to be developed for the optical cable for the remote base stations. The market needs to protect the optical units in the remote optical cable to a certain extent, and in addition, the optical cable needs to have high-strength tensile resistance and lateral pressure resistance, and in addition, the optical unit part needs to be easy to branch, so that construction connection is convenient; the cable is used for pulling away a base station, is connected with an RRU from a machine room BBU closer to the base station, and is pulled away to a required station, so that the cable has higher requirement on temperature.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a strenghthened type skeleton optical cable that zooms is provided, stretch-proofing performance and anti side pressure performance are good, easily branch, and comprehensive properties is excellent.

The utility model discloses a solve above-mentioned technical problem and the technical scheme who adopts is:

a reinforced skeleton remote optical cable comprises a first optical fiber unit, a second optical fiber unit and a special-shaped skeleton jacket 2, wherein the special-shaped skeleton jacket 2 consists of a central circular main sleeve 201 and six reinforcing wings 202 which are uniformly distributed along the circumference and extend along the radial direction; the first optical fiber unit is arranged in the central circular main sleeve 201 and comprises a plurality of first colored optical fibers 1b, and a light unit protective layer 5 is arranged outside the first colored optical fibers 1b in a wrapping mode; a convex strip extending along the axial direction of the optical cable is respectively arranged on the same side of the reinforcing wings 202, and second colored optical fibers 1a are arranged in the convex strip, so that each second colored optical fiber 1a is positioned in a gap between two reinforcing wings 202.

Further, the protruding strip is disposed at a radial middle position of the reinforcing wing 202.

Furthermore, six T-shaped glass fiber reinforced cores 3 are embedded in the special-shaped framework sheath 2 at positions corresponding to the six reinforcing wings 202, each T-shaped glass fiber reinforced core 3 is provided with a circumferential extending part and a radial extending part, the circumferential extending part is embedded in the central circular main sleeve 201, and the radial extending part is embedded and inserted into the reinforcing wings 202.

Furthermore, the first optical fiber unit is further provided with a reinforcing spacer 4 having a radial cross section, which divides the cavity inside the central circular main sleeve 201 into a plurality of branch cavities to accommodate the first colored optical fibers 1 b.

When the first optical fiber unit includes three first colored optical fibers 1b, the reinforcing spacer 4 has a herringbone shape in cross section.

Furthermore, the colored optical fibers 1a and 1b are super-Bei bend loss insensitive optical fibers, the T-shaped glass fiber reinforced core 3 and the reinforced isolation piece 4 adopt high-modulus glass fibers, and the special-shaped framework sheath 2 is formed by extruding thermoplastic polyolefin elastomer materials.

Further, the outer diameter of the special-shaped framework sheath 2 is 4.0mm, and the thickness of the reinforcing wing 202 is 0.25 mm.

The utility model discloses a strenghthened type skeleton optical cable that zooms has adopted very unique ingenious special-shaped skeleton texture, the circular main casing 201 in center of special-shaped skeleton sheath 2 and first optical fiber unit constitute the first optical unit of traditional structure, six enhancement wings 202 of unique radial extension have been set up simultaneously, set up the sand grip even as an organic whole with the material on every enhancement wing 202, set up the colored optic fibre 1a of second in the sand grip, the colored optic fibre 1a of second is set up steadily in the clearance between two enhancement wings 202, it can both obtain fine protection to have ensured the optical cable at the colored optic fibre 1a of actual construction and in-service second, constitute excellent unique second optical unit of performance by strengthening wing 202 and second optical fiber unit.

And the arrangement of the T-shaped glass fiber reinforced core 3 enables the reinforcing wing 202 to have more excellent tensile and compressive properties.

The reinforcing isolation pieces 4 with radial sections are arranged in the first optical fiber unit, so that good functions of isolating and preventing electrostatic interference and cross winding can be achieved.

Compared with the prior art, the utility model, have following advantage:

(1) because the optical fiber ribbon adopts the super-shell bending loss insensitive optical fiber, the performance of the accessed optical fiber is greatly improved, and the optical fiber ribbon has a positive effect on the bending loss and the tensile resistance of the whole optical cable;

(2) the optical cable in the structural form is not protected by the circular outer sheath, but has strong optical fiber protection performance, and the structure forms a skeleton shape, so that the self-bearing capacity of the remote wiring optical cable is effectively reduced;

(3) the T-shaped glass fiber reinforced core is arranged inside each reinforcing wing of the optical cable, so that the shape of the framework is kept, the tensile strength of each reinforcing wing is enhanced by the framework, and the tensile strength of the whole cable is further improved;

(4) the convex strip and the optical fiber are arranged in the middle of each reinforcing wing, so that the tensile strength of the optical fiber and the tensile strength of the reinforcing wings can be effectively associated, the tensile strength of the optical fiber is ensured, and meanwhile, the optical fiber is arranged in the middle of the reinforcing wings, so that when the optical cable receives side pressure, the optical fiber can be ensured not to be influenced by side pressure due to the supporting effect of the reinforcing wings in the optical cable, and the mechanical performance of the optical unit is improved;

(5) the optical cable is internally provided with the reinforced isolating piece with the radial section, so that the electrostatic interference among the independent optical units is protected, the independent transmission of optical signals is ensured, and each optical unit is positioned in the area where the optical unit is positioned and cannot be crossed and wound back and forth. Compared with the method that the sheath forms a closed inner area to limit the movement of the optical unit, the method reduces the material of the sheath, lightens the weight of the whole cable and is convenient for the bending movement of the optical cable;

(6) the special-shaped framework sheath with high hardness and flame retardant property is made of thermoplastic polyolefin elastomer materials, and an optical unit isolation region in the optical cable is added, so that the whole cable has high flame retardant property.

Drawings

Fig. 1 is the structure of the reinforced framework remote optical cable of the present invention.

In the figure:

1a, a second colored optical fiber 1b, a first colored optical fiber

2. Special-shaped framework sheath 201 and central circular main sleeve

202. Reinforced wing 3, T-shaped glass fiber reinforced core

4. Reinforcing spacer 5, light unit protective layer

Detailed Description

The invention is further described with reference to the following figures and examples.

Fig. 1 shows a reinforced skeleton-type remote optical cable comprising a first optical fiber unit, a second optical fiber unit and a shaped skeleton jacket 2, wherein the shaped skeleton jacket 2 is formed by extrusion molding of a thermoplastic polyolefin elastomer material. The special-shaped framework sheath 2 consists of a central circular main sleeve 201 and six reinforcing wings 202 which are uniformly distributed along the circumference and extend along the radial direction; the first optical fiber unit is arranged in the central circular main sleeve 201 and comprises three first colored optical fibers 1b, and a light unit protective layer 5 is arranged outside the first colored optical fibers 1b in a wrapping mode; a convex strip (which is connected with the special-shaped framework sheath 2 together with the material and is integrated with the same) extending along the axial direction of the optical cable is respectively arranged on the same side of the reinforcing wings 202, and second colored optical fibers 1a are arranged in the convex strip, so that each second colored optical fiber 1a is positioned in a gap between two reinforcing wings 202. The colored optical fiber 1a and the colored optical fiber 1b are super-Bei bend loss insensitive optical fibers. The protruding strip is disposed at the radial middle position of the reinforcing wing 202, and may be slightly adjusted in the disposed position according to the actual design requirement.

The special-shaped framework sheath 2 is internally provided with six T-shaped glass fiber reinforced cores 3 which are embedded in the corresponding positions of the six reinforced wings 202, the T-shaped glass fiber reinforced cores 3 adopt high-modulus glass fibers, the T-shaped glass fiber reinforced cores 3 are provided with a circumferential extending part and a radial extending part, the circumferential extending part is embedded in the central circular main sleeve 201, and the radial extending part is embedded in the reinforced wings 202. Of course, due to the difference in size and material of the optical cable and the difference in design requirements, the T-shaped glass fiber reinforced core 3 may not be embedded in the special-shaped framework sheath 2, as long as the reinforcing wing 202 has sufficient strength to support and protect.

The first optical fiber unit is further provided with a reinforcing spacer 4 having a herringbone shape in cross section, which divides the cavity inside the central circular main sleeve 201 into three branched cavities to accommodate three first colored optical fibers 1b, respectively. The reinforced isolation member 4 adopts high modulus glass fiber. Of course, the first optical fiber unit may also be provided with a plurality of first colored optical fibers 1b, and at this time, the cross section of the reinforcing spacer 4 is in a radial structure, so as to divide the cavity inside the central circular main sleeve 201 into a plurality of branch cavities to accommodate a plurality of first colored optical fibers 1 b.

The outer diameter of the special-shaped framework sheath 2 is 4.0mm, and the thickness of the reinforcing wing 202 is 0.25 mm.

Although the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides an optical cable is pulled far to strenghthened type skeleton which characterized in that: the optical fiber cable comprises a first optical fiber unit, a second optical fiber unit and a special-shaped framework sheath (2), wherein the special-shaped framework sheath (2) consists of a central circular main sleeve (201) and six reinforcing wings (202) which are uniformly distributed along the circumference and extend along the radial direction; the first optical fiber unit is arranged in the central circular main sleeve (201), the first optical fiber unit comprises a plurality of first colored optical fibers (1b), and a light unit protective layer (5) is wrapped outside the first colored optical fibers (1 b); the same side of each reinforcing wing (202) is provided with a convex strip extending along the axial direction of the optical cable, and second colored optical fibers (1a) are arranged in the convex strips, so that each second colored optical fiber (1a) is positioned in a gap between every two reinforcing wings (202).

2. The reinforced skeletal pull-away optical cable of claim 1, wherein: the convex strip is arranged at the radial middle position of the reinforcing wing (202).

3. The reinforced skeletal pull-away optical cable of claim 1, wherein: the special-shaped framework sheath (2) is internally embedded with six T-shaped glass fiber reinforced cores (3) at positions corresponding to the six reinforced wings (202), each T-shaped glass fiber reinforced core (3) is provided with a circumferential extending part and a radial extending part, the circumferential extending part is embedded in the central circular main sleeve (201), and the radial extending part is embedded in the reinforced wings (202).

4. The reinforced skeletal pull-away optical cable of claim 3, wherein: the T-shaped glass fiber reinforced core (3) adopts high-modulus glass fiber.

5. The reinforced skeletal pull-away optical cable of any of claims 1 to 4, wherein: the first optical fiber unit is also provided with a reinforcing isolation piece (4) with a radial section, and a cavity inside the central circular main sleeve (201) is divided into a plurality of branch cavities to accommodate the first colored optical fibers (1 b).

6. The reinforced skeletal pull-away optical cable of claim 5, wherein: the first optical fiber unit includes three first colored optical fibers (1b), and the reinforcing spacer (4) has a herringbone shape in cross section.

7. The reinforced skeletal pull-away optical cable of claim 6, wherein: the second colored optical fiber (1a) and the first colored optical fiber (1b) are super-Bei bend loss insensitive optical fibers, the reinforced isolating piece (4) adopts high-modulus glass fibers, and the special-shaped framework sheath (2) is formed by extruding thermoplastic polyolefin elastomer materials.

8. The reinforced skeletal pull-away optical cable of claim 7, wherein: the outer diameter of the special-shaped framework sheath (2) is 4.0mm, and the thickness of the reinforcing wing (202) is 0.25 mm.