CN203218017U - A radio-frequency remote-optical hybrid cable for base stations - Google Patents

Abstract

The utility model discloses a radio frequency remote photoelectric hybrid cable for a base station, which comprises an outer sheath, a number of aramid reinforcements and copper wires are arranged inside the outer sheath, a spiral armor tube is arranged inside the aramid reinforcement, and a helical A tight-buffered optical fiber is provided inside the armored tube, and a central reinforcement is provided inside the outer sheath. The utility model is simple in structure, easy to use, and solves the problem of unstable voltage generated by the current RRU using AC power nearby and difficult to realize power backup, and also solves the problem of taking DC power from the BBU side, resulting in too many cables between the BBU and the RRU problem, reducing costs.

Description

A radio-frequency remote-optical hybrid cable for base stations

technical field

The utility model relates to a cable, in particular to a radio frequency remote photoelectric hybrid cable for a base station.

Background technique

The emergence of distributed base stations with long-distance optical fibers has solved the problem of radio-frequency long-distance photoelectric hybrid cables in the manufacturing technology of communication optical cables to a large extent. However, it is difficult to supply power to the radio frequency part of distributed base stations. At present, RRU usually takes DC power from the BBU side. Too many cables between the BBU and RRU will increase the difficulty of construction and affect the appearance of the surrounding environment.

Utility model content

Aiming at the deficiencies in the prior art, the utility model provides a simple structure, easy to use, and solves the problem of unstable voltage generated by the current RRU using AC power nearby and difficult to realize power backup, and also solves the problem of taking DC power from the BBU side. , resulting in the problem of too many cables between the BBU and the RRU, which reduces the cost of the base station using radio frequency to pull the optical hybrid cable.

In order to achieve the above object, the utility model is realized through the following technical solutions:

A radio-frequency remote photoelectric hybrid cable for a base station, including an outer sheath, a number of aramid reinforcements and copper wires are arranged in the outer sheath, a spiral armor tube is arranged in the aramid reinforcement member, and a tightening tube is arranged in the spiral armor tube. The optical fiber is covered with a central strength member inside the outer sheath.

Further, a water blocking strip is provided on the inner side wall of the outer sheath.

Further, the outer surface of the aramid reinforcement is provided with a metal textile layer.

Further, the central reinforcement is arranged in the middle of the outer sheath.

The radio frequency remote photoelectric hybrid cable for the base station adopts the above-mentioned technical scheme. Since the outer sheath is provided with a number of aramid reinforcements and copper wires, the aramid reinforcement is provided with a spiral armor tube, and the spiral armor tube is provided with a tight sleeve. There is a central strength member in the outer sheath of the optical fiber, so the optical fiber adopts a tight sleeve structure to ensure that the optical cable is small in size, easy to lay, and cost-saving. In order to ensure that the optical unit is not squeezed by the copper wire when twisting, the optical unit Helical armor is used. In order to ensure that the optical cable can withstand a certain tensile force, aramid fiber reinforcing yarn is added behind the spiral armor layer. In order to ensure that the optical unit is evenly stressed when twisted with copper wires, the sub-unit adopts a cradle-type constant tension pay-off device. .

Description of drawings

The utility model is described in detail below in conjunction with accompanying drawing and specific embodiment;

Fig. 1 is a structural schematic diagram of a radio-frequency telephoto hybrid cable for a base station of the present invention.

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the utility model easy to understand, the utility model will be further elaborated below in conjunction with specific embodiments.

As shown in Figure 1, a radio-frequency remote photoelectric hybrid cable for a base station includes an outer sheath 8, and a number of aramid reinforcements 3 and copper wires 6 are arranged in the outer sheath 8, and a helix is arranged in the aramid reinforcement 3. Armor tube 2, a tight sleeve optical fiber 1 is arranged inside the spiral armor tube 2, a central strengthening member 5 is arranged inside the outer sheath 8, a water blocking tape 7 is arranged on the inner wall of the outer sheath 8, and the outer sheath 3 of the aramid fiber A metal textile layer 4 is provided on the surface, and a central reinforcement 5 is arranged in the middle of the outer sheath 8 .

The utility model base station radio frequency remote photoelectric hybrid cable is used for distributed base stations with optical fiber remote. The optical cable is composed of two tight-sleeve flexible steel tape armored optical units and two wires twisted and then extruded with a layer of sheath. cable. Each element cable in the cable can be directly terminated with a standard connector. The hardness of the optical unit is inconsistent with that of the copper wire, so the optical unit must be protected when twisted into a cable. The finished cable should not only guarantee the characteristics of the optical fiber but also meet the relevant standards of low-voltage transmission cables. The optical fiber adopts a tight-sleeved structure to ensure that the optical cable is small in size, easy to lay, and cost-saving. In order to ensure that the optical unit is not squeezed by the copper wires during twisting, the optical unit adopts spiral armor. In order to ensure that the optical cable can withstand a certain tensile force, aramid fiber reinforcing yarn is added after the spiral armor layer. In order to ensure that the optical unit is evenly stressed when twisted with the copper wire, the sub-unit adopts a cradle-type constant tension pay-off device. The introduction of radio frequency remote photoelectric hybrid cable and the supporting DC remote power supply system solves the problem of unstable voltage generated by the use of alternating current (AC) by the RRU and the difficulty of power backup; it also solves the problem of taking DC power from the BBU side, As a result, there are too many cables between the BBU and the RRU, the construction is difficult, and the surrounding environment is affected. Solve the communication management in the smart energy network; avoid repeated wiring of optical cables and save costs; lay the foundation for the integration of four networks.

The basic principles and main features of the present utility model and the advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (4)

1. A radio-frequency remote photoelectric hybrid cable for a base station, comprising an outer sheath, characterized in that: the outer sheath is provided with a number of aramid reinforcements and copper wires, and the aramid reinforcement is provided with a spiral armor tube, A tight-buffered optical fiber is provided in the spiral armored tube, and a central strengthening member is provided in the outer sheath. 2. The radio-frequency remote optical-electrical hybrid cable for base stations according to claim 1, characterized in that: a water-blocking strip is provided on the inner wall of the outer sheath. 3. The radio-frequency remote optical-electrical hybrid cable for base station according to claim 1, characterized in that: the outer surface of the aramid fiber reinforcement is provided with a metal textile layer. 4. The remote radio-frequency optical-electrical hybrid cable for base stations according to claim 1, characterized in that: the central strengthening member is arranged in the middle of the outer sheath.

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