CN217932193U

CN217932193U - Double-side supporting self-supporting aerial optical cable

Info

Publication number: CN217932193U
Application number: CN202221469013.XU
Authority: CN
Inventors: 袁福; 张剑锋; 李朋; 龚云凤; 艾阳春
Original assignee: Zhejiang Wanma Tianyi Communication Wire & Cable Co ltd
Current assignee: Zhejiang Wanma Tianyi Communication Wire & Cable Co ltd
Priority date: 2022-06-14
Filing date: 2022-06-14
Publication date: 2022-11-29
Anticipated expiration: 2032-06-14

Abstract

The utility model relates to an optical cable manufacturing installation. The purpose is to provide a double-sided supporting self-supporting aerial optical cable, and the optical cable has the characteristics of reducing the influence of environmental erosion and prolonging the service life. The technical scheme is that the double-sided supporting self-supporting aerial optical cable comprises an optical cable; the method is characterized in that: the aerial optical cable also comprises suspension wire units which are symmetrically arranged outside the optical cable and connected with the optical cable through suspension belts; the optical cable comprises a core wire, a water blocking tape, a metal tape armor layer and an outer sheath which are sequentially coated from inside to outside; the suspension wire unit comprises a galvanized steel strand and a suspension wire sheath which coats the galvanized steel strand and is integrally injection-molded with the suspension strap and the outer sheath.

Description

Double-side supporting self-supporting aerial optical cable

Technical Field

The utility model relates to an optical cable field of making, concretely relates to two-sided support self-supporting aerial [ insulated ] cable.

Background

In recent years, optical fiber users have begun to increase significantly with the widespread use of optical cables in the internet, cable television networks, and the like. However, in the fiber-to-the-home construction line, the overhead optical cable is in an open space, and the surrounding environment is complex and variable, so that the requirement on the environment resistance of the optical cable is high. A conventional aerial optical cable adopts a traditional structural mode, and is subjected to corrosion of a complex environment all year round, so that the main cable is separated from the cable, the optical cable is bent, and the optical fiber is broken to lose the communication function.

Under the circumstances, a self-supporting aerial optical cable which is easy to construct, excellent in environmental resistance and firm in structure is urgently needed in the market so as to meet various using requirements of the market and users.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of above-mentioned background art, provide a two-sided support self-supporting aerial [ insulated ] cable, this optical cable should have the influence that can alleviate the environmental erosion, the characteristics that improve life-span.

The utility model provides a technical scheme is: a double-sided supporting self-supporting aerial optical cable comprises an optical cable; the method is characterized in that: the aerial optical cable also comprises suspension wire units which are symmetrically arranged outside the optical cable and connected with the optical cable through suspension belts; the optical cable comprises a core wire, a water blocking tape, a metal tape armor layer and an outer sheath which are sequentially coated from inside to outside; the suspension wire unit comprises a galvanized steel strand and a suspension wire sheath which coats the galvanized steel strand and is integrally injection-molded with the suspension strap and the outer sheath.

The core wire comprises a central reinforcing part and a plurality of PBT loose tubes arranged around the central reinforcing part, and a plurality of optical fibers and water-blocking yarns are inserted into the loose tubes; water blocking yarns are also disposed between the loose tubes and the central reinforcing member.

The central reinforcing piece, the PBT loose tube, the optical fiber, the water-blocking yarn and the galvanized steel strand all extend along the length direction of the aerial optical cable.

Furthermore, the outer diameter of the galvanized steel strand is 3.0mm, and the outer diameter of the suspension wire sheath is phi 5.4mm.

Furthermore, a columnar filling member is arranged in the core wire to meet the requirement of the circumferential degree of the optical cable.

The utility model has the advantages that: because of adopting the loose tube structure, therefore can adopt G652D optic fibre, have not only guaranteed the optic fibre performance is more excellent, and the cost is reduced moreover. Because the PBT loose tube is internally blocked by the water-blocking yarn, the optical cable is more environment-friendly compared with the conventional optical cable; moreover, due to the adoption of the structure that the suspension wire units are supported on two sides of the optical cable, the suspension wire unit on one side plays a role in supporting and protecting after the installation is finished, and the suspension wire unit on the other side can also play a role in supporting, protecting and reserving; meanwhile, the stress at the position of the optical cable sling can be effectively reduced, so that the influence of the environment on the corrosion of the optical cable after the optical cable is installed (the problem that the sling on one side of the optical cable cannot be used continuously after being partially damaged) is solved, and the service life is effectively prolonged.

Drawings

Fig. 1 is a schematic cross-sectional enlarged structure of an embodiment of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments shown in the drawings.

In the cross-sectional schematic view of the double-sided supported self-supporting aerial optical cable shown in fig. 1, the aerial optical cable comprises an optical cable and a suspension wire unit which is symmetrically arranged outside the optical cable and is connected with the optical cable through a suspension strap 3; the optical cable comprises a core wire, a water-blocking tape 9, a metal tape armor layer 10 and an outer sheath 11 which are sequentially coated from inside to outside; the suspension wire unit comprises a galvanized steel strand 2 and a suspension wire sheath 1 which coats the galvanized steel strand and is integrally injection-molded with the suspension strap and the outer sheath. The core wire comprises a central reinforcing part 6 and a plurality of PBT loose tubes 8 arranged around the central reinforcing part, and a plurality of optical fibers 4 and water-blocking yarns 5 are inserted in each loose tube; and a water-blocking yarn is arranged between the PBT loose tube and the central reinforcing piece. In addition, whether the filler 7 is arranged in the core wire can be determined according to needs (the filler is added to increase the roundness of the optical cable).

The core wire is formed by the optical fiber, the PBT loose tube and the central reinforcing piece (preferably aramid fiber reinforcing piece) at the central position of the optical cable, so that the tensile property of the optical cable can be improved; the metal tape armor and the water blocking yarn can improve the water blocking effect and increase the mechanical strength of the optical cable. The suspension wire unit with double-sided support is used for placing the optical cable which needs to be protected most in the middle position, so that the two sides of the optical cable can play a supporting role; the stress component of the suspension wire unit adopts a galvanized steel strand (as a recommendation, the galvanized steel strand with the outer diameter phi of 3.0mm is adopted in the suspension wire unit, and the outer diameter of the suspension wire sheath is phi of 5.4 mm), so that the suspension wire unit has the characteristics of difficult corrosion and excellent bending performance (compared with a single steel wire with the same thickness, the steel wire is easier to bend, and is beneficial to construction operation) on the premise of improving the tensile strength.

In addition, the materials of the suspension wire sheath, the suspension belt and the outer sheath are high-quality polyethylene, so that the suspension wire sheath, the suspension belt and the outer sheath are not easy to damage during installation and dragging, and the service life is longer.

Obviously, the above description is only a few embodiments of the present invention; for those skilled in the art, variations can be made in the specific embodiments and applications without departing from the spirit and scope of the embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Claims

1. A double-sided supporting self-supporting aerial optical cable comprises an optical cable; the method is characterized in that: the aerial optical cable also comprises suspension wire units which are symmetrically arranged outside the optical cable and connected with the optical cable through suspension belts (3); the optical cable comprises a core wire, a water blocking tape (9), a metal tape armor layer (10) and an outer sheath (11) which are sequentially coated from inside to outside; the suspension wire unit comprises a galvanized steel strand (2) and a suspension wire sheath (1) which coats the galvanized steel strand and is integrally injection-molded with the suspension strap and the outer sheath.

2. The double-sided supported self-supporting aerial fiber cable of claim 1, wherein: the core wire comprises a central reinforcing piece (6) and a plurality of PBT loose tubes (8) arranged around the central reinforcing piece, and a plurality of optical fibers (4) and water-blocking yarns (5) are inserted into the loose tubes; a water blocking yarn is also disposed between the loose tube and the central reinforcement.

3. The double-sided supported self-supporting aerial fiber cable of claim 2, wherein: the central reinforcing piece, the PBT loose tube, the optical fiber, the water-blocking yarn and the galvanized steel strand all extend along the length direction of the aerial optical cable.

4. A double-sided supported self-supporting aerial optical cable according to claim 3, wherein: the outer diameter of the galvanized steel strand is 3.0mm; the outer diameter of the suspension wire sheath is phi 5.4mm.

5. The double-sided supported self-supporting aerial fiber cable of claim 4, wherein: and a columnar filling piece (7) is arranged in the core wire so as to meet the requirement of the circumferential degree of the optical cable.