CN213542405U - Photoelectric hybrid cable for intelligent lamp pole - Google Patents

Abstract

The utility model discloses a photoelectric hybrid cable for a smart lamp post, wherein a cable core comprises a data cable unit, an optical cable unit and a feeder line unit, and the optical cable unit and the feeder line unit are arranged around the periphery of the data cable unit; the cable core is sequentially coated with an aluminum foil shielding layer, a braided shielding layer and a cable outer sheath from inside to outside; the data cable unit comprises four groups of twisted pairs, and a data cable shielding layer and a data cable protective layer are sequentially coated on the four groups of twisted pairs from inside to outside; the optical cable unit comprises a fiber core and an optical fiber outer protective layer, a cladding is surrounded on the fiber core, an aramid yarn reinforcing piece is filled between the cladding and the optical fiber outer protective layer, and an optical fiber waterproof layer is coated on the optical fiber outer protective layer; the feeder line unit comprises a stranded copper conductor, and a feeder line insulating layer is coated on the stranded copper conductor. The hybrid cable can transmit optical signals, electric signals and electric energy at the same time, achieves multiple purposes by one cable, and saves wiring space.

Description

Photoelectric hybrid cable for intelligent lamp pole

Technical Field

The utility model relates to a photoelectric mixed cable technique especially relates to a photoelectric mixed cable of ability simultaneous transmission light signal, signal of telecommunication and electric energy.

Background

With the deep advance of new national infrastructure, the development of mobile internet, cloud computing, network storage, internet of things, new applications for representatives and new operation modes, the coming of 5G commercial era and the realization of deep coverage of smart lamp posts, traffic hubs, indoor hot spot areas, commercial streets, parking lots, offices and the like in the F5G era generate huge demands on macro base stations, small base stations, (micro base stations, pico base stations and femto base stations), wherein the smart lamp posts are intelligent infrastructures which are most viewed due to the comprehensiveness and superior point location distribution.

The intelligent lamp pole is the public infrastructure that integrates various functions together, can provide including functional illumination, traffic control, pollutant control, atmospheric quality control, Wi-Fi, 4G/5G basic station, broadcasting, information shielding, fill multiple use such as electric pile, along with this kind of function application project increase gradually, and need solve the problem of getting of equipment, mixed network deployment solution of photoelectricity can solve broadband access, equipment power consumption, signal transmission's problem, it adopts the network deployment mode of mixed cable of photoelectricity + outdoor ONU + network jumper wire + terminal equipment, mixed cable of photoelectricity long-range transmission to multi-functional smart pole, mix cable of photoelectricity + outdoor ONU on multi-functional smart pole is disposed, provide signal transmission and power supply for multiple terminal equipment, this scheme can satisfy the requirement of high bandwidth, reduce the cable simultaneously and use. In the construction of wisdom lamp pole, a large amount of equipment integration is in the lamp pole, and every equipment needs 1-2 cables at least to supply power and signal transmission, and the lamp pole space is narrow and small, therefore the cable external diameter reduces with the cable bunch set, two big new demands to the cable trade in wisdom lamp pole construction field, and the cable for wisdom lamp pole power supply and signal transmission relates to power line, net twine, optical cable, how to provide reasonable design's photoelectric composite cable will become this trade new chance.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a mixed cable of photoelectricity for wisdom lamp pole is provided, this mixed cable can transmit light signal, signal of telecommunication and electric energy simultaneously to realize that a cable is multi-purpose, reduce the wiring space, practice thrift the cable combined cost.

In order to solve the technical problem, the photoelectric hybrid cable for the intelligent lamp post comprises a cable core, wherein the cable core comprises a data cable unit, an optical cable unit and a feeder unit, and the optical cable unit and the feeder unit are arranged around the periphery of the data cable unit; the cable core is sequentially coated with an aluminum foil shielding layer, a braided shielding layer and a cable outer sheath from inside to outside; the data cable unit comprises four groups of twisted pairs, each group of twisted pairs is formed by twisting two insulated single wires, each insulated single wire comprises a copper conductor, an insulated inner skin layer, an insulated foaming layer and an insulated outer skin layer are sequentially coated on the copper conductor, each group of twisted pairs is also coated with a pair wire shielding layer, and the four groups of twisted pairs are sequentially coated with a data cable shielding layer and a data cable protective layer from inside to outside; the optical cable unit comprises a fiber core and an optical fiber outer protective layer, a cladding is surrounded on the fiber core, an aramid yarn reinforcing piece is filled between the cladding and the optical fiber outer protective layer, and an optical fiber waterproof layer is coated on the optical fiber outer protective layer; the feeder line unit comprises a stranded copper conductor, and a feeder line insulating layer is coated on the stranded copper conductor.

Preferably, the copper conductor is a solid copper conductor with a diameter of 0.55-0.58 mm and an elongation at break of 23.5% -25.5%.

Preferably, the pair of wire shielding layers are formed by wrapping aluminum foils with the thickness of 0.06mm, the wrapping coverage rate of the aluminum foils is 110% -120%, the data cable shielding layers are woven by tinned copper wires, and the data cable protection layers are formed by extruding and wrapping low-smoke halogen-free flame-retardant cable materials.

Preferably, the optical cable unit comprises four fiber cores, corresponding cladding layers are wrapped outside each fiber core, and the aramid yarn reinforcing members are formed by filling aramid yarns.

Preferably, the optical fiber waterproof layer is formed by winding a semi-conductive water-blocking tape, and the winding overlapping rate of the semi-conductive water-blocking tape is 20% -25%.

Preferably, the optical fiber outer protective layer is formed by extruding and wrapping low-smoke halogen-free flame-retardant polyethylene.

Preferably, the twisted copper conductor is formed by twisting soft round copper wires with the diameter of 0.3mm, and the feeder line insulating layer is formed by extruding and wrapping a low-smoke halogen-free flame-retardant polyethylene material.

Preferably, the aluminum foil shielding layer is formed by wrapping an aluminum foil with the thickness of 0.06mm, and the wrapping coverage rate is 120% -130%; the braided shielding layer is formed by braiding tinned copper wires, and the braiding density is 35%.

Preferably, the thickness of the cable outer sheath is 0.8 mm-1.1 mm, and the cable outer sheath is formed by extruding and wrapping low-smoke halogen-free flame-retardant cable materials.

In the structure, the cable core comprises the data cable unit, the optical cable unit and the feeder line unit, so that a cable which can simultaneously transmit optical signals and electric signals and can provide corresponding electric energy for electric pole equipment is provided, the multiple functional requirements of the intelligent lamp pole are met, one cable is multipurpose, the complex cable structure caused by separately installing the optical fiber cable, the data cable and the electric power cable is eliminated, and the defects of high manufacturing and installing cost are overcome; simultaneously this kind of cable structure that integrates has also significantly reduced the space that the cable installation occupied for the special use occasion of the narrow and small wisdom lamp pole in space is applied to multi-functional cable becomes possible. The cable core is coated with the aluminum foil shielding layer and the braided shielding layer to form a double-shielding structure, so that the problem of electromagnetic interference inside and outside the cable is effectively solved, and the overall electromagnetic interference resistance of the cable is greatly improved. And because the data cable unit is surrounded at the central position of the cable core by the optical cable unit and the feeder line unit, the influence on the whole structure of the data cable unit is minimum when the cable is laid and installed, the structural stability of the data cable is favorably enhanced, and the data transmission performance of the data cable is improved. The aramid fiber reinforcement is filled in the optical fiber outer protective layer, so that the mechanical properties of tensile strength, compression resistance and the like of the optical fiber are enhanced, a reliable and stable protection function is formed, particularly, the optical fiber waterproof layer is coated outside the optical fiber outer protective layer, the invasion of moisture to the inside of the optical fiber is strictly prevented, the increase of optical fiber attenuation is effectively prevented, and the structure forms a tensile and waterproof optical fiber cable structure, so that the hybrid cable is more suitable for complex use environments.

Drawings

The following description is made on the photoelectric hybrid cable for the intelligent lamp post with reference to the accompanying drawings and the detailed description.

Fig. 1 is a schematic cross-sectional view of an embodiment of a photoelectric hybrid cable for a smart light pole according to the present invention;

fig. 2 is a schematic cross-sectional structure of a data cable unit in the embodiment shown in fig. 1;

fig. 3 is a schematic cross-sectional structure view of the optical cable unit in the embodiment of fig. 1.

In the figure, 1-data cable unit, 10-copper conductor, 11-insulating inner skin layer, 12-insulating foaming layer, 13-insulating outer skin layer, 14-paired line shielding layer, 15-data cable shielding layer, 16-data cable protection layer, 2-optical cable unit, 21-fiber core, 22-cladding, 23-aramid yarn reinforcement, 24-optical fiber outer skin layer, 25-optical fiber waterproof layer, 3-feeder line unit, 31-twisted copper conductor, 32-feeder line insulating layer, 4-aluminum foil shielding layer, 5-braided shielding layer, and 6-cable outer skin layer.

Detailed Description

As shown in fig. 1, the cable core of the intelligent lamp post photoelectric hybrid cable comprises a data cable unit 1 located at the center of the cable core, six feeder units 3 and two optical cable units 2 are arranged around the periphery of the data cable unit 1, the cabling pitch of the cable core is designed to be 480mm, the tension of the take-up and pay-off wires is uniform, and the deviation of the cabling pitch is controlled within +/-5 mm. The cable core is coated with an aluminum foil shielding layer 4, a braided shielding layer 5 and a cable outer sheath 6 from inside to outside in sequence. The aluminum foil shielding layer 4 is formed by wrapping an aluminum foil with the thickness of 0.06mm, and the wrapping coverage rate of the aluminum foil is 120 percent, and preferably 120 percent to 130 percent; the braided shielding layer 5 is braided by tinned copper wires, and the braiding density of the braided shielding layer is 35%. The cable outer sheath 6 is formed by extruding and wrapping low-smoke halogen-free flame-retardant cable materials, and the thickness of the cable outer sheath is 0.9mm, preferably controlled between 0.8mm and 1.1 mm.

Six feeder units 3 located at the periphery of the data cable unit 1 have the same structure, a twisted copper conductor 31 of the feeder unit 3 is coated with a feeder insulation layer 32, and the twisted copper conductor 31 is twisted into 4mm by 56 soft round copper wires with the diameter of 0.3mm²The feeder insulation layer 32 is formed by extruding and wrapping low-smoke halogen-free flame-retardant polyethylene cable material.

As shown in fig. 2, the data cable unit 1 includes four pairs of twisted wire sets, each pair of twisted wire set is formed by twisting two insulated single wires, the twisted pitch range is 20 mm-38 mm, the tolerance range of the twisted wire pitch is controlled within ± 0.2mm, each insulated single wire includes a copper conductor 10, the copper conductor 10 adopts a solid copper conductor with the diameter of 0.55-0.58 mm, and the elongation at break of the conductor is 23.5% -25.5%; an insulating inner skin layer 11, an insulating foam layer 12 and an insulating outer skin layer 13 are sequentially coated on the copper conductor 10, the thickness of the insulating inner skin layer 11 is 0.02mm, the thickness of the insulating outer skin layer 13 is 0.05mm, and the insulating foam layer 12 is of a physical foam structure and is 0.38 mm; the insulation concentricity is not less than 98%, each pair of twisted wire groups are coated with a pair wire shielding layer 14, the pair wire shielding layer 14 is formed by wrapping an aluminum foil with the thickness of 0.06mm, and the coverage rate of the wrapping of the aluminum foil is 110-120%. The four twisted pair groups are sequentially coated with a data cable shielding layer 15 and a data cable protective layer 16 from inside to outside, the data cable shielding layer 15 is formed by weaving tinned copper wires, the weaving density is 35%, and the data cable protective layer 16 is formed by extruding and wrapping a low-smoke halogen-free flame-retardant cable material.

As shown in fig. 3, the optical cable unit 2 includes four fiber cores 21, a corresponding cladding 22 is surrounded outside each fiber core 21, an optical fiber outer sheath 24 is disposed outside the four fiber cores 21, an aramid yarn reinforcement 23 is filled between a gap between the cladding 22 and the optical fiber outer sheath 24, and the aramid yarn reinforcement 23 is formed by filling aramid fibers. The optical fiber outer protective layer 24 is formed by extruding and wrapping low-smoke halogen-free flame-retardant polyethylene, the optical fiber outer protective layer 24 is coated with an optical fiber waterproof layer 25, the optical fiber waterproof layer 25 is formed by wrapping a semi-conductive water-blocking tape, and the wrapping overlapping rate is 20% -25%.

Claims (9)

1. The utility model provides a mixed cable of photoelectricity for wisdom lamp pole, includes the cable core, its characterized in that: the cable core comprises a data cable unit (1), an optical cable unit (2) and a feeder unit (3), and the optical cable unit (2) and the feeder unit (3) are arranged around the periphery of the data cable unit (1); the cable core is sequentially coated with an aluminum foil shielding layer (4), a braided shielding layer (5) and a cable outer sheath (6) from inside to outside; the data cable unit (1) comprises four groups of twisted pairs, each group of twisted pairs is formed by twisting two insulated single wires, each insulated single wire comprises a copper conductor (10), an insulated inner skin layer (11), an insulated foaming layer (12) and an insulated outer skin layer (13) are sequentially coated on the copper conductor (10), each group of twisted pairs is further coated with a pair wire shielding layer (14), and the four groups of twisted pairs are sequentially coated with a data cable shielding layer (15) and a data cable protective layer (16) from inside to outside; the optical cable unit (2) comprises a fiber core (21) and an optical fiber outer protective layer (24), a cladding (22) is surrounded on the fiber core (21), an aramid yarn reinforcing piece (23) is filled between the cladding (22) and the optical fiber outer protective layer (24), and an optical fiber waterproof layer (25) is coated on the optical fiber outer protective layer (24); the feeder unit (3) comprises a stranded copper conductor (31), and a feeder insulating layer (32) is coated on the stranded copper conductor (31).

2. The photoelectric hybrid cable for intelligent lamp pole according to claim 1, characterized in that: the copper conductor (10) is a solid copper conductor, the diameter of the solid copper conductor is 0.55-0.58 mm, and the elongation at break of the solid copper conductor is 23.5% -25.5%.

3. The photoelectric hybrid cable for intelligent lamp pole according to claim 1, characterized in that: the pair wire shielding layer (14) is formed by wrapping an aluminum foil with the thickness of 0.06mm, the wrapping coverage rate of the aluminum foil is 110% -120%, the data cable shielding layer (15) is formed by weaving tinned copper wires, and the data cable protective layer (16) is formed by extruding and wrapping a low-smoke halogen-free flame-retardant cable material.

4. The photoelectric hybrid cable for intelligent lamp pole according to claim 1, characterized in that: the optical cable unit (2) comprises four fiber cores (21), corresponding cladding layers (22) are wrapped outside each fiber core (21), and the aramid yarn reinforcing pieces (23) are formed by filling aramid yarns.

5. The photoelectric hybrid cable for the intelligent lamp post according to claim 1 or 4, wherein: the optical fiber waterproof layer (25) is formed by winding a semi-conductive water-blocking tape, and the winding overlapping rate of the semi-conductive water-blocking tape is 20% -25%.

6. The photoelectric hybrid cable for the intelligent lamp post according to claim 1 or 4, wherein: the optical fiber outer protective layer (24) is formed by extruding and wrapping low-smoke halogen-free flame-retardant polyethylene.

7. The photoelectric hybrid cable for intelligent lamp pole according to claim 1, characterized in that: the stranded copper conductor (31) is formed by stranding soft round copper wires with the diameter of 0.3mm, and the feeder line insulating layer (32) is formed by extruding and wrapping a low-smoke halogen-free flame-retardant polyethylene material.

8. The photoelectric hybrid cable for intelligent lamp pole according to claim 1, characterized in that: the aluminum foil shielding layer (4) is formed by wrapping an aluminum foil with the thickness of 0.06mm, and the wrapping coverage rate is 120-130%; the braided shielding layer (5) is formed by braiding tinned copper wires, and the braiding density is 35%.

9. The photoelectric hybrid cable for intelligent lamp pole according to claim 1, characterized in that: the thickness of the cable outer sheath (6) is 0.8 mm-1.1 mm, and the cable outer sheath (6) is formed by extruding and wrapping low-smoke halogen-free flame-retardant cable materials.

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