CN113568122B

CN113568122B - Bulletproof butterfly cable

Info

Publication number: CN113568122B
Application number: CN202110941669.0A
Authority: CN
Inventors: 朱卫华; 魏成东; 任浩; 陈雪康
Original assignee: Sichuan Tianfu Jiangdong Technology Co ltd
Current assignee: Sichuan Tianfu Jiangdong Technology Co ltd
Priority date: 2021-08-17
Filing date: 2021-08-17
Publication date: 2023-06-23
Anticipated expiration: 2041-08-17
Also published as: CN113568122A

Abstract

The invention discloses a bulletproof butterfly cable, belongs to the technical field of optical communication, and aims to provide a bulletproof butterfly cable which solves the problems that an existing bulletproof lead-in optical cable is high in manufacturing cost and a steel belt is not easy to peel off. The waterproof device comprises a plastic sheath, wherein the plastic sheath comprises a cylindrical part at the upper side and a square cylindrical part at the lower side, a reinforcing part is arranged in the cylindrical part, the cylindrical part is coated on the reinforcing part, the square cylindrical part is provided with a plurality of optical fibers, the optical fibers are annularly coated with waterproof belts, the square cylindrical part is coated on the waterproof belts, U-shaped bulletproof steel belts are further arranged at the outer sides of the waterproof belts in the square cylindrical part, the opening direction of the U-shaped bulletproof steel belts faces one side of the reinforcing part, the waterproof belts are positioned in the openings of the U-shaped bulletproof steel belts, and the square cylindrical part is coated on the U-shaped bulletproof steel belts. The invention is suitable for bulletproof butterfly-shaped lead-in cables.

Description

Bulletproof butterfly cable

Technical Field

The invention belongs to the technical field of optical communication, and particularly relates to a bulletproof butterfly cable.

Background

The butterfly-shaped optical cable is a user access optical cable, reasonably designs the optical cable structure and various technical parameters according to different application environments and laying conditions, integrates the characteristics of an indoor soft optical cable and a self-supporting optical cable, is an optimal product for FTTX (fiber to the air) network, and plays a unique role in constructing networks such as intelligent buildings, digital cells, campus networks, local area networks and the like. Self-supporting butterfly access cables are commonly used for self-supporting overhead installations, sometimes subject to gun damage.

Existing butterfly drop cables include both indoor and outdoor types, as shown in fig. 2, using two wires (or non-metallic reinforcements), sandwiching one or more optical fibers, to form a 2*3 indoor GJXH butterfly cable. As shown in fig. 3, the outdoor gJYXCH butterfly cable is added with a steel wire (or nonmetal reinforcement) and a sheath on the basis of the 2*3 indoor butterfly cable, and the steel wire is used as a self-supporting overhead suspension wire.

As shown in fig. 4 to 6, the existing bulletproof optical cable is generally a cable of the types including GYTS, GYTY53, GYTA53, etc. which are longitudinally lapped by a steel belt, and the steel belt is longitudinally lapped on the cable core of the optical cable. Or as shown in fig. 7, a GYTA33 cable in the form of a steel band wrapped around the cable. Also as shown in fig. 8, application number CN202010356273.5 discloses a flexible armored butterfly-shaped optical cable and a flexible armored butterfly-shaped optical cable mentioned in the manufacturing method thereof, which adopts a steel belt to spirally wrap around an optical fiber.

However, the conventional butterfly-shaped optical cable has the following 3 problems

Problem 1: the outdoor type 2*3 GJXH butterfly-shaped lead-in cable and the outdoor type 2*5 GJYXCH butterfly-shaped lead-in cable have the advantages that only one layer of plastic is protected outside the optical fiber, and the cable is easy to damage by shotgun and the like because the cable does not have a bulletproof function when being installed in an overhead mode.

Problem 2: other bulletproof optical cables, such as GYS/GTY 53/GYTA53/GYTA33, have a bulletproof function although being protected by steel belts, but are relatively heavy and have high cost, and are not suitable for being used as an optical cable for introduction.

Problem 3: the flexible armored butterfly-shaped optical cable disclosed in application number CN202010356273.5 has the advantages that the steel belt is spirally wrapped around the optical fiber, so that the steel belt wrapping efficiency is very low, and the manufacturing cost is high. Meanwhile, the steel belt is wound on the optical fiber and has high strength, so that the steel belt is difficult to peel off rapidly, and the problem of inconvenient installation exists.

Disclosure of Invention

The invention aims at: the bulletproof butterfly-shaped cable solves the problems that an existing bulletproof lead-in optical cable is high in manufacturing cost and a steel belt is not easy to peel off.

The technical scheme adopted by the invention is as follows:

the utility model provides a bulletproof butterfly cable, includes the plastics sheath, the plastics sheath includes the drum portion of upside and the square tube portion of downside, be provided with the reinforcement in the drum portion, drum portion cladding is on the reinforcement, square tube portion is provided with a plurality of optic fibre, and the annular cladding has the water blocking tape on the optic fibre, square tube portion cladding is on the water blocking tape, is located the water blocking tape outside in the square tube portion and still is provided with the bulletproof steel band of U type, the opening direction of bulletproof steel band of U type is towards reinforcement one side, the water blocking tape is located the opening of bulletproof steel band of U type, square tube portion cladding is on bulletproof steel band of U type.

Further, the reinforcing piece is made of steel wires or nonmetal.

Further, the distance between the junction of the cylinder part and the square cylinder part and the water blocking belt is 0.1-0.2mm.

Further, V-shaped openings are formed in the two side end portions of the connecting portion of the cylinder portion and the square cylinder portion.

Further, a yarn is arranged in the middle of the joint of the cylinder part and the square cylinder part, and the yarn is formed by combining a plurality of yarns.

In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:

1. the invention comprises a plastic sheath, wherein the plastic sheath comprises an upper cylindrical part and a lower square cylindrical part, a reinforcing part is arranged in the cylindrical part, the cylindrical part is coated on the reinforcing part, the square cylindrical part is provided with a plurality of optical fibers, the optical fibers are annularly coated with a water blocking belt, the square cylindrical part is coated on the water blocking belt, a U-shaped bulletproof steel belt is further arranged in the square cylindrical part and positioned outside the water blocking belt, the opening direction of the U-shaped bulletproof steel belt faces one side of the reinforcing part, the water blocking belt is positioned in the opening of the U-shaped bulletproof steel belt, and the square cylindrical part is coated on the U-shaped bulletproof steel belt.

Through the arrangement, the optical cable adopts a butterfly structure, the upper part is provided with a reinforcing piece and a plastic sheath coated on the reinforcing piece, the lower part is provided with one or more optical fiber coated water blocking belts, and the outside of the water blocking belts is provided with a U-shaped bulletproof steel belt and the plastic sheath coated on the U-shaped bulletproof steel belt. The U-shaped ballistic steel strip protects the optical fibers from the down, left, and right directions from the shotgun bullets when the cable is self-supporting (bullets will not normally strike from above), while the reinforcement protects the optical fibers from above when the cable is coiled. Compared with the existing lead-in optical cable steel belt wrapping design, the U-shaped bulletproof steel belt design has the characteristics of light weight and easy stripping and separating, the bulletproof requirement of the lead-in optical cable can be met, meanwhile, the installation convenience can be ensured, and the problems that the existing bulletproof lead-in optical cable is high in manufacturing cost and the steel belt is not easy to strip are effectively solved.

2. In the invention, the distance between the junction of the cylinder part and the square cylinder part and the water blocking belt is 0.1-0.2mm. Through this setting, can guarantee to expose the water blocking strip when tearing the plastics sheath, the staff of being convenient for installs and maintains.

3. In the invention, the two side end parts of the connecting part of the cylinder part and the square cylinder part are provided with V-shaped openings. Through this setting, V type open-ended design has guaranteed to tear the plastics sheath from V type opening part, can expose the area that blocks water, can take out optic fibre with the hand easily, makes things convenient for staff's installation and maintenance.

4. In the invention, the middle part of the joint of the cylinder part and the square cylinder part is provided with the yarn, and the yarn is formed by combining a plurality of yarns. Through this setting, the yarn can reduce the intensity of yarn department plastics sheath, makes things convenient for the staff to tear the plastics sheath, increases the peelability of optic fibre.

Drawings

For a clearer description of the technical solutions of embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and should not be considered limiting in scope, and other related drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic diagram of a prior art GJXH cable;

FIG. 3 is a schematic diagram of a prior art GJYXCH optical cable;

FIG. 4 is a schematic diagram of a prior art GYS cable;

FIG. 5 is a schematic diagram of a prior art GYTY53 cable;

FIG. 6 is a schematic diagram of a prior art GYTA53 cable;

FIG. 7 is a schematic diagram of a prior art GYTA33 cable;

FIG. 8 is a schematic view of the structure of an optical cable disclosed in application number CN202010356273.5

The marks in the figure: 1-cylinder part, 2-square cylinder part, 3-reinforcement, 4-optical fiber, 5-water blocking belt, 6-U-shaped bulletproof steel belt, 7-V-shaped opening and 8-yarn.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that: reference numerals and letters denote similar items throughout the following figures, and thus once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or those that are conventionally put in use of the inventive product, are merely for convenience of description of the present invention, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the mechanical connection can be made or the electrical connection can be made; can be directly connected or indirectly connected through an intermediate medium, and can be the communication between the two original parts. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Further, the reinforcing piece is made of steel wires or nonmetal.

In the implementation process, the optical cable adopts a butterfly structure, the upper part is a reinforcing part and a plastic sheath coated on the reinforcing part, the lower part is one or more optical fiber coated water blocking belts, and the outside of the water blocking belts is a U-shaped bulletproof steel belt and the plastic sheath coated on the U-shaped bulletproof steel belt. The U-shaped ballistic steel strip protects the optical fibers from the down, left, and right directions from the shotgun bullets when the cable is self-supporting (bullets will not normally strike from above), while the reinforcement protects the optical fibers from above when the cable is coiled. Compared with the existing lead-in optical cable steel belt wrapping design, the U-shaped bulletproof steel belt design has the characteristics of light weight and easy stripping and separating, the bulletproof requirement of the lead-in optical cable can be met, meanwhile, the installation convenience can be ensured, and the problems that the existing bulletproof lead-in optical cable is high in manufacturing cost and the steel belt is not easy to strip are effectively solved.

Preferably, the distance between the junction of the cylinder part and the square cylinder part and the water blocking belt is 0.1-0.2mm. Through this setting, can guarantee to expose the water blocking strip when tearing the plastics sheath, the staff of being convenient for installs and maintains.

Preferably, V-shaped openings are provided at both side ends of the connection portion of the cylindrical portion and the square cylindrical portion. Through this setting, V type open-ended design has guaranteed to tear the plastics sheath from V type opening part, can expose the area that blocks water, can take out optic fibre with the hand easily, makes things convenient for staff's installation and maintenance.

Preferably, a yarn is arranged in the middle of the joint of the cylinder part and the square cylinder part, and the yarn is formed by combining a plurality of yarns. The strength of the plastic sheath at the yarn position is reduced by arranging the yarn, so that a worker can conveniently tear the plastic sheath, and the peelability of the optical fiber is improved.

Example 1

Example 2

On the basis of embodiment 1, the reinforcing member is made of steel wires or nonmetal.

Example 3

On the basis of the embodiment, the distance between the connecting part of the cylinder part and the square cylinder part and the water blocking belt is 0.1-0.2mm. Through this setting, can guarantee to expose the water blocking strip when tearing the plastics sheath, the staff of being convenient for installs and maintains.

Example 4

On the basis of the embodiment, the two side end parts of the connecting part of the cylinder part and the square cylinder part are provided with V-shaped openings. Through this setting, V type open-ended design has guaranteed to tear the plastics sheath from V type opening part, can expose the area that blocks water, can take out optic fibre with the hand easily, makes things convenient for staff's installation and maintenance.

Example 5

On the basis of the embodiment, the yarn is arranged in the middle of the joint of the cylinder part and the square cylinder part, and the yarn is formed by combining a plurality of yarns. The strength of the plastic sheath at the yarn position is reduced by arranging the yarn, so that a worker can conveniently tear the plastic sheath, and the peelability of the optical fiber is improved.

The above-described embodiments of the present invention. The foregoing description is illustrative of various preferred embodiments of the present invention, and the preferred embodiments of the various preferred embodiments may be used in any combination and stacked on the premise of a certain preferred embodiment, where the embodiments and specific parameters in the embodiments are only for clearly describing the verification process of the present invention, and are not intended to limit the scope of the present invention, and the scope of the present invention is still subject to the claims, and all equivalent structural changes made by applying the descriptions and the drawings of the present invention are included in the scope of the present invention.

Claims

1. The utility model provides a bulletproof butterfly cable, its characterized in that includes the plastics sheath, the plastics sheath includes drum portion (1) of upside and square tube portion (2) of downside, be provided with reinforcement (3) in drum portion (1), drum portion (1) cladding is on reinforcement (3), square tube portion (2) are provided with a plurality of optic fibre (4), and annular cladding has water blocking tape (5) on optic fibre (4), square tube portion (2) cladding is on water blocking tape (5), still is provided with U type bulletproof steel tape (6) in square tube portion (2) outside water blocking tape (5), the opening direction of U type bulletproof steel tape (6) is towards reinforcement (3) one side, water blocking tape (5) are located the opening of U type bulletproof steel tape (6), square tube portion (2) cladding is on U type bulletproof steel tape (6); the distance between the joint of the cylinder part (1) and the square cylinder part (2) and the water-blocking tape (5) is 0.1-0.2mm; the two side end parts of the joint of the cylinder part (1) and the square cylinder part (2) are provided with V-shaped openings (7); the middle part of the joint of the cylinder part (1) and the square cylinder part (2) is provided with a yarn (8), and the yarn (8) is formed by combining a plurality of yarns.

2. A ballistic butterfly cable according to claim 1, wherein the reinforcement (3) is made of steel wire or non-metal.