CN211125167U

CN211125167U - 4G/5G is optoelectrical composite cable for little basic station

Info

Publication number: CN211125167U
Application number: CN202020058815.6U
Authority: CN
Inventors: 马丽君; 刘峰; 俞滨; 李自习; 李冠魁; 李广省; 周文; 高宪武
Original assignee: Shandong Pacific Optical Fiber Cable Co ltd
Current assignee: Shandong Pacific Optical Fiber Cable Co ltd
Priority date: 2020-01-10
Filing date: 2020-01-10
Publication date: 2020-07-28
Anticipated expiration: 2030-01-10

Abstract

The utility model discloses a 4G/5G photoelectric composite cable for small base stations, which comprises an optical unit, an electric unit and a sheath layer, wherein the two electric units are arranged in parallel side by side, the optical unit is arranged in the middle between the two electric units, and the sheath layer is arranged outside the electric unit and the optical unit; the optical unit comprises two-core tightly-sleeved optical fiber, aramid yarn and a metal armored hose, the outer portion of the two-core tightly-sleeved optical fiber is protected in a tensile mode through the aramid yarn, the two-core tightly-sleeved optical fiber is armored through the metal armored hose, and a tightly-sleeved layer is arranged on the outer portion of the two-core tightly-sleeved optical fiber. The photoelectric composite cable is suitable for indoor and outdoor wiring, integrates light and electricity and has a photoelectric simultaneous transmission function; the cable has the advantages of low smoke, zero halogen and flame retardant property, excellent rat-proof property, easy stripping, convenient construction, side pressure resistance and good tensile property.

Description

4G/5G is optoelectrical composite cable for little basic station

Technical Field

The utility model belongs to the technical field of communication and specifically relates to a 4G/5G is photoelectric composite cable for little basic station.

Background

With the continuous expansion of the construction scale of optical fiber networks and the application of 4G and 5G communication technologies, the limitations of the traditional macro station in the aspects of site construction property coordination, the requirement of a matched base station machine room, depth and accurate coverage, capacity expansion and reconstruction and the like are increasingly prominent. The small base station represented by the pico-station adopts low-cost, miniaturized, low-power and low-power-consumption access equipment, and accesses an operator core network through an IP-based wired broadband backhaul link and a small base station gateway, so that the problems can be better solved, and the method becomes a beneficial supplement of the traditional macro-station. Because 4G and future 5G small base stations are inconvenient to be configured with power supplies independently, and a connecting cable needs to transmit optical signals and electric power simultaneously, in order to avoid laying optical cables for optical transmission and electric cables for electric transmission respectively, occupy excessive existing pipeline resources, increase the construction difficulty and cost, a special radio frequency remote optical-electrical composite cable for the small base stations is developed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a 4G/5G photoelectric composite cable for small base stations, which is suitable for indoor and outdoor wiring, integrates light and electricity and has photoelectric simultaneous transmission function; the cable has the advantages of low smoke, zero halogen and flame retardant property, excellent rat-proof property, easy stripping, convenient construction, side pressure resistance and good tensile property.

The utility model provides a technical scheme that its technical problem adopted is: A4G/5G photoelectric composite cable for a small base station comprises optical units, electric units and a sheath layer, wherein the two electric units are arranged in parallel side by side, the optical unit is arranged in the middle between the two electric units, and the sheath layer is arranged outside the electric units and the optical units; the optical unit comprises two-core tightly-sleeved optical fiber, aramid yarn and a metal armored hose, the outer portion of the two-core tightly-sleeved optical fiber is protected in a tensile mode through the aramid yarn, the two-core tightly-sleeved optical fiber is armored through the metal armored hose, and a tightly-sleeved layer is arranged on the outer portion of the two-core tightly-sleeved optical fiber.

Further, the electric unit includes reinforcement, conductor and insulating layer, the outside of reinforcement is equipped with the conductor, the conductor outside is equipped with the insulating layer, and the insulating layer outside is equipped with the restrictive coating.

Furthermore, the outer layer of the reinforcing part is spirally stranded by adopting a copper wire, and after the copper wires are stranded, a polyimide belt is tightly wrapped outside the copper conductors to form an insulating layer.

Furthermore, the upper surface and the lower surface of the sheath layer are respectively provided with an electric unit cable stripping groove and an optical unit cable opening groove, the electric unit cable stripping groove corresponds to the electric unit, and the optical unit cable opening groove corresponds to the optical unit.

Further, the metal armored hose is a spiral pipe.

The utility model has the advantages that:

1. the utility model adopts the anti-bending optical fiber, so that the optical cable has good bending performance and is very suitable for being laid in a narrow indoor space; the outer layer of the optical unit is armored and protected by a stainless steel metal spiral pipe, so that the optical unit has the advantage of preventing rodents from biting; the optical unit is armored by a metal spiral pipe and reinforced and protected by aramid yarn, and has good lateral pressure resistance and tensile property; the electric unit adopts a stainless steel wire as a central reinforcing piece and an outer layer copper wire as a conductor, so that the conductor has double functions of transmitting current and serving as a reinforcing piece, the cable has a compact structure, and the space is saved; the copper conductors are respectively arranged on two sides of the optical fiber in parallel, so that the optical fiber can be reinforced and protected, and the tensile property of the optical cable is improved.

2. Through set up a plurality of recesses respectively on restrictive coating surface, make things convenient for peeling off of electric unit and optical unit, construction convenience.

3. The light-collecting communication and the power transmission are integrated, so that power supply and digital information transmission can be directly carried out on indoor and outdoor small base stations, and the existing pipeline resources can be saved;

drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure:

1 insulating layer, 2 reinforcers, 3 conductors, 4 tight jacketing layers, 5 two-core tight jacketed optical fibers, 6 aramid yarn, 7 metal armored hoses, 8 sheathing layers, 9 electric unit cable stripping grooves and 10 optical unit cable stripping grooves.

Detailed Description

The following detailed description of the photoelectric composite cable for 4G/5G small base station of the present invention is made with reference to the accompanying drawings.

As shown in fig. 1, the utility model discloses a 4G/5G photoelectric composite cable for small base station, including optical unit, electric unit and restrictive coating, two electric units are parallel to each other, the middle part is equipped with the optical unit between two electric units, the outside of electric unit and optical unit is equipped with the restrictive coating; the optical unit comprises two-core tightly-sleeved optical fiber 5, aramid yarn 6 and a metal armored hose, the outer part of the two-core tightly-sleeved optical fiber is subjected to tensile protection through the aramid yarn, and the two-core tightly-sleeved optical fiber is armored through the metal armored hose. The outside of the two-core tight-sleeved optical fiber is provided with a tight-sleeved layer 4.

The electric unit includes reinforcement 2, conductor 3 and insulating layer 1, the outside of reinforcement 2 is equipped with

conductor

3, 3 outsides of conductor are equipped with insulating layer 1, and 1 outsides of insulating layer are equipped with restrictive coating 8.

The outer layer of the reinforcing piece 2 is spirally stranded by adopting a copper wire to prepare a copper conductor 3, and the tensile property of the composite cable is improved by the steel wire reinforcing piece; after the copper conductors are twisted, a polyimide tape is tightly wrapped outside the copper conductors to form an insulating layer 1.

The upper surface and the lower surface of the sheath layer 8 are respectively provided with an electric unit cable stripping groove 9 and an optical unit cable opening groove 10, the electric unit cable stripping groove 9 corresponds to an electric unit, and the optical unit cable opening groove 10 corresponds to an optical unit.

The metal armored hose 7 is a spiral pipe.

The preparation method comprises the following steps:

1) the periphery of the optical fiber adopts an ultraviolet curing acrylic acid double coating, a layer of tight sleeve material is extruded outside the optical fiber through an extruding machine, the tight sleeve material is extruded outside the optical fiber through the extruding machine, the tight sleeve material can be nylon material, polyvinyl chloride PVC, thermoplastic polyurethane elastomer TPU and low-smoke halogen-free material L SZH, and the optical fiber adopts single-mode bending-resistant optical fiber or multi-mode bending-resistant optical fiber.

2) The stainless steel wire is pressed into a metal band with uniform thickness and width by a steel wire flatting mill, the metal band is prepared into a spiral metal hose by a long-length automatic pipe making machine, and the metal hose with proper outer diameter is obtained by back-twisting treatment in the pipe forming process, wherein the gap is 0.1-0.5 mm, and preferably 0.3 mm. The outer diameter is phi 0.9 mm-phi 15mm, preferably phi 12 mm. The metal armored hose carries out armored protection on the tightly sleeved optical fiber; in the process of pipe making, the tightly sleeved optical fibers and aramid yarns are placed at the center of the metal armored hose to prepare the armored optical unit.

3) Adopting a conductor bunching machine, adopting copper wires to carry out spiral stranding outside a stainless steel wire center reinforcing piece to prepare an electric conductor, wherein the sectional area of the conductor can be selected according to the requirements of customers, and when the sectional area of the conductor is more than 1.5mm²When the cross-sectional area of the conductor is less than 1.5mm, the central reinforcing member is not needed²In time, the stainless steel wire is required to be added as a reinforcing member to improve the tensile property of the optical cable.

4) After the bare copper conductors are stranded, tightly wrapping a layer of polyimide tape outside the copper conductors, wherein the covering rate of the tape is 5-10%, and the preferable ratio is 8%; after the conductor is wrapped, the polyimide belt is sintered and solidified to serve as an insulating temperature-resistant layer through ceramic infrared sintering equipment with accurate temperature control.

5) According to the structure that two copper conductors are respectively placed on two sides of an armored optical unit, an optical unit and an electric unit respectively penetrate through die holes of parallel structures, a layer of low-smoke halogen-free material is extruded through an extruding machine to serve as an outer protective layer, meanwhile, a regular groove is reserved on the surface of the protective layer through the die, and the groove serves as a cable stripping groove of the electric unit and a cable stripping opening of the optical unit.

The optical-electrical composite cable optical fiber adopts two-core optical fiber, the outer layer of the optical fiber adopts nylon material to tightly cover to prepare tightly covered optical fiber, the tightly covered optical fiber is armored by a stainless steel hose and is protected by aramid yarn tensile force, the center of an electrical unit adopts steel wire as a center reinforcing member, the outer layer adopts copper wire to carry out spiral stranding to prepare a copper conductor, the steel wire reinforcing member improves the tensile property of the composite cable, after a bare copper conductor is stranded, a layer of polyimide belt is tightly wound outside the copper conductor to form an insulating layer, finally, according to the structure that the two conductors are respectively placed on two sides of an armored optical unit in parallel, low-smoke halogen-free material L SZH is adopted, a layer of outer sheath is extruded by an extruding machine, regularly distributed cable stripping grooves are arranged on the surface of the outer sheath by utilizing a special die, and the.

The photoelectric composite cable of the utility model is suitable for indoor and outdoor wiring, and the composite cable integrates light and electricity and has the function of photoelectric simultaneous transmission; the cable has the advantages of low smoke, zero halogen and flame retardant property, excellent rat-proof property, easy stripping, convenient construction, side pressure resistance and good tensile property.

The foregoing is merely illustrative of some of the principles of the present invention and the description is not intended to limit the invention to the specific constructions and applications shown, so that all modifications and equivalents that may be utilized are within the scope of the invention.

Other technical features than those described in the specification are known to those skilled in the art.

Claims

1. A4G/5G photoelectric composite cable for a small base station is characterized by comprising optical units, electric units and a sheath layer, wherein the two electric units are arranged in parallel side by side, the optical unit is arranged in the middle between the two electric units, and the sheath layer is arranged outside the electric units and the optical units; the optical unit comprises two-core tightly-sleeved optical fiber, aramid yarn and a metal armored hose, the outer portion of the two-core tightly-sleeved optical fiber is protected in a tensile mode through the aramid yarn, the two-core tightly-sleeved optical fiber is armored through the metal armored hose, and a tightly-sleeved layer is arranged on the outer portion of the two-core tightly-sleeved optical fiber.

2. The optical-electrical composite cable for 4G/5G small base station as claimed in claim 1, wherein the electrical unit comprises a reinforcing member, a conductor and an insulating layer, the conductor is arranged outside the reinforcing member, the insulating layer is arranged outside the conductor, and the sheath layer is arranged outside the insulating layer.

3. The optical-electrical composite cable for 4G/5G small base station as claimed in claim 2, wherein the outer layer of the reinforcement is twisted by copper wires, and after the copper wires are twisted, a polyimide tape is tightly wrapped around the copper conductors to form an insulating layer.

4. The optical-electrical composite cable for 4G/5G small base station as claimed in claim 1, wherein the upper and lower surfaces of the sheath layer are respectively provided with an electrical unit cable stripping groove and an optical unit cable opening groove, the electrical unit cable stripping groove corresponds to the electrical unit, and the optical unit cable opening groove corresponds to the optical unit.

5. The optical-electrical composite cable for 4G/5G small base station as claimed in claim 1, wherein the metal-clad hose is a spiral pipe.