CN111933344A - Self-supporting photoelectric composite cable and optical cable - Google Patents

Self-supporting photoelectric composite cable and optical cable Download PDF

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Publication number
CN111933344A
CN111933344A CN202010809768.9A CN202010809768A CN111933344A CN 111933344 A CN111933344 A CN 111933344A CN 202010809768 A CN202010809768 A CN 202010809768A CN 111933344 A CN111933344 A CN 111933344A
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CN
China
Prior art keywords
sheath body
cavity
transmission unit
power transmission
light transmission
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CN202010809768.9A
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Chinese (zh)
Inventor
金迁
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Changshu Liangfang Intelligent Technology Co ltd
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Changshu Liangfang Intelligent Technology Co ltd
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Priority to CN202010809768.9A priority Critical patent/CN111933344A/en
Publication of CN111933344A publication Critical patent/CN111933344A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/38—Insulated conductors or cables characterised by their form with arrangements for facilitating removal of insulation
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401—Optical cables
    • G02B6/4429—Means specially adapted for strengthening or protecting the cables
    • G02B6/443—Protective covering
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401—Optical cables
    • G02B6/4429—Means specially adapted for strengthening or protecting the cables
    • G02B6/443—Protective covering
    • G02B6/4432—Protective covering with fibre reinforcements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/42—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction
    • H01B7/421—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction for heat dissipation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/005—Power cables including optical transmission elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/006—Constructional features relating to the conductors

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Communication Cables (AREA)

Abstract

The application belongs to the technical field of electric power and cables, and relates to a self-supporting photoelectric composite cable which is provided with an eccentric composite sheath, a power transmission unit and a light transmission unit; the eccentric composite sheath is characterized by comprising three sheath bodies; the sheath body is internally provided with a cavity, the power transmission unit is positioned in the cavity, and the light transmission unit is positioned in the eccentric cavity. The application also discloses a self-supporting optical cable. The invention has the following main beneficial effects: the structure is simple, the molding is easy, the stripping is convenient, the power transmission part is not broken when stripping, the heat dissipation is good, and the optical fiber density is high.

Description

Self-supporting photoelectric composite cable and optical cable
Technical Field
The invention belongs to the technical field of electric power and cables, and particularly relates to a self-supporting photoelectric composite cable and an optical cable.
Background
CN201853973U discloses a peeling blade for electric wire and cable, which comprises a round thin sheet, a sharp corner cutting edge and a through hole, wherein the sharp corner cutting edge is arranged on the circumference of the round thin sheet, the through hole is arranged on the surface of the round thin sheet, and the through hole and the round thin sheet are eccentrically arranged. In order to ensure that the blade can be more safely and reliably arranged on the shaft and can be driven to effectively rotate, the through hole is composed of a polygonal hole with more than two sides, and the sharp-angle cutting edge is provided with a sawtooth-shaped cutting groove. The peeling blade for the electric wire and the electric cable has a simple structure, and can be used for peeling electric wires and electric cables of various types due to the eccentric arrangement of the through hole and the round sheet, and the cutting depth of the peeling blade can be adjusted.
CN2713490Y discloses a central beam tube type optical cable with signal lines, which includes a cable core composed of optical fibers, fillers, a central beam tube and a water-blocking layer, a steel band outside the cable core, a pair of reinforcing members, and an outer sheath extruded outside the steel band and the pair of reinforcing members, wherein at least one group of covered signal lines for transmitting electrical signals is further contained in the outer sheath along the circumference of the steel band 5. The cable has the effects of optical fiber communication and multi-channel electrical signal communication, can reduce the frame/laying of corresponding lines, is beneficial to intensification, saves raw material resources and reduces the cost; the signal wire or the wire pair or the wire group is arranged between the steel belt and the outer sheath layer, so that the signal wire is in a dry structure and is beneficial to construction.
The self-supporting cable in the prior art has two types, one type is a round structure, and a reinforcing part for resisting large tensile force is added in the self-supporting cable, such as a plurality of steel wires or a plurality of strands of aramid fibers are few, and the product is heavy in weight or high in price; the second type is 8-shaped structure, which comprises a suspension wire, a connecting rib and a cable body, wherein a reinforcing piece is arranged in the suspension wire, in the mode, the connecting rib is easy to break and age in use, the size is not easy to control in production (due to the fact that the connecting rib is flaky and is inconsistent with the shrinkage of the suspension wire and the cable body), and the phenomenon of skew and torsion is easy to generate, so the qualified rate is extremely low; moreover, the presence of the tie bars makes the cost prohibitive.
Tiny signal lines in the optical cable are directly located in the sheath, stripping is extremely inconvenient, and the sheath and the signal line insulating layer are mainly bonded into a whole and are not easy to separate. In addition, when the reinforcing member is used for power transmission, the position of the reinforcing member cannot be known unless the entire cross section of the cable is stripped.
Disclosure of Invention
In order to solve the above problems, the present invention discloses a self-supporting optical/electrical composite cable and an optical cable, which are implemented by the following technical solutions.
A self-supporting photoelectric composite cable is provided with an eccentric composite sheath, a first power transmission unit, a second power transmission unit, a third power transmission unit, a fourth power transmission unit, a fifth power transmission unit and a first light transmission unit; the eccentric composite sheath is characterized by comprising a first sheath body, a second sheath body and a third sheath body which are integrally formed, wherein the first sheath body is in a cylindrical annular shape, the second sheath body is in a cylindrical annular shape, the third sheath body is in a cylindrical annular shape, the central axis of the second sheath body is positioned on the first sheath body, the upper part of the second sheath body protrudes out of the outer edge of the first sheath body, the lower part of the second sheath body protrudes out of the inner edge of the first sheath body, the lower part of the third sheath body is overlapped with the lower part of the first sheath body, the upper part of the third sheath body is positioned inside the first sheath body, and the upper part of the third sheath body is tangent to or has a gap with the lower part of the second sheath body; the second sheath body is internally provided with a fifth cavity, the left upper part of the first sheath body, the left upper part of the second sheath body and the left upper part of the third sheath body enclose a first cavity, the right upper part of the first sheath body, the right upper part of the second sheath body and the right upper part of the third sheath body enclose a second cavity, the third sheath body is internally provided with an eccentric cavity, the first sheath body on the left side of the eccentric cavity is provided with a third cavity, the first sheath body on the right side of the eccentric cavity is provided with a fourth cavity, and the axis of the eccentric cavity is positioned under the axis of the first sheath body; the first power transmission unit is located in the fifth cavity, the second power transmission unit is located in the third cavity, the third power transmission unit is located in the fourth cavity, the fourth power transmission unit is located in the first cavity, the fifth power transmission unit is located in the second cavity, and the first light transmission unit is located in the eccentric cavity.
The self-supporting photoelectric composite cable is characterized in that the first light transmission unit is replaced by a second light transmission unit, and the second light transmission unit is composed of a loose sleeve and a plurality of optical fibers positioned in the loose sleeve.
The self-supporting photoelectric composite cable is characterized in that the first power transmission unit is composed of a first conductor and a first insulating sleeve covering the first conductor.
The self-supporting photoelectric composite cable is characterized in that the second power transmission unit is composed of a second conductor and a second insulating sleeve coated outside the second conductor.
The self-supporting photoelectric composite cable is characterized in that the third power transmission unit is composed of a third conductor and a third insulating sleeve covering the third conductor.
The self-supporting photoelectric composite cable is characterized in that the fourth power transmission unit is composed of a fourth conductor and a fourth insulating sleeve covering the fourth conductor.
The self-supporting photoelectric composite cable is characterized in that the fifth power transmission unit is composed of a fifth conductor and a fifth insulating sleeve covering the fifth conductor.
The self-supporting photoelectric composite cable is characterized in that the first light transmission unit comprises a loose sleeve and a plurality of optical fiber ribbons positioned in the loose sleeve.
The self-supporting photoelectric composite cable is characterized in that the loose tube is made of polypropylene, polybutylene terephthalate, low-density polyethylene, medium-density polyethylene, high-density polyethylene, low-smoke halogen-free polyethylene, low-smoke low-halogen polyethylene, polyvinyl chloride, nylon, polytetrafluoroethylene, TPE or TPU.
The self-supporting photoelectric composite cable is characterized in that the first sheath body, the second sheath body and the third sheath body are made of polypropylene, polybutylene terephthalate, low-density polyethylene, medium-density polyethylene, high-density polyethylene, low-smoke halogen-free polyethylene, low-smoke low-halogen polyethylene, polyvinyl chloride, nylon, polytetrafluoroethylene, TPE or TPU.
The self-supporting photoelectric composite cable is characterized in that the insulating sleeve is made of polypropylene, polybutylene terephthalate, low-density polyethylene, medium-density polyethylene, high-density polyethylene, low-smoke halogen-free polyethylene, low-smoke low-halogen polyethylene, polyvinyl chloride, nylon, polytetrafluoroethylene, TPE or TPU. The insulating sleeve refers to a first insulating sleeve, a second insulating sleeve, a third insulating sleeve, a fourth insulating sleeve and a fifth insulating sleeve.
The self-supporting photoelectric composite cable is characterized in that the conductor is made of copper or aluminum or alloy. The conductor refers to a first conductor, a second conductor, a third conductor, a fourth conductor and a fifth conductor.
The self-supporting photoelectric composite cable is characterized in that the loose tube is made of polypropylene, polybutylene terephthalate, low-density polyethylene, medium-density polyethylene, high-density polyethylene, low-smoke halogen-free polyethylene, low-smoke low-halogen polyethylene, polyvinyl chloride, nylon, polytetrafluoroethylene, TPE or TPU.
The self-supporting photoelectric composite cable is characterized in that the optical fiber is a single-mode optical fiber or a multi-mode optical fiber.
According to the self-supporting photoelectric composite cable, the first power transmission unit, the second power transmission unit and the third power transmission unit can also be reinforcing parts, and the reinforcing parts are steel wires or copper wires or glass fiber reinforced plastic rods; but also copper or aluminum or alloys that are bare or tin plated on the surface.
A self-supporting optical cable is provided with an eccentric composite sheath, a first light transmission unit, a second light transmission unit, a third light transmission unit, a fourth power transmission unit, a fifth power transmission unit and a second power transmission unit; the eccentric composite sheath is characterized by comprising a first sheath body, a second sheath body and a third sheath body which are integrally formed, wherein the first sheath body is in a cylindrical annular shape, the second sheath body is in a cylindrical annular shape, the third sheath body is in a cylindrical annular shape, the central axis of the second sheath body is positioned on the first sheath body, the upper part of the second sheath body protrudes out of the outer edge of the first sheath body, the lower part of the second sheath body protrudes out of the inner edge of the first sheath body, the lower part of the third sheath body is overlapped with the lower part of the first sheath body, the upper part of the third sheath body is positioned inside the first sheath body, and the upper part of the third sheath body is tangent to or has a gap with the lower part of the second sheath body; the second sheath body is internally provided with a fifth cavity, the left upper part of the first sheath body, the left upper part of the second sheath body and the left upper part of the third sheath body enclose a first cavity, the right upper part of the first sheath body, the right upper part of the second sheath body and the right upper part of the third sheath body enclose a second cavity, the third sheath body is internally provided with an eccentric cavity, the first sheath body on the left side of the eccentric cavity is provided with a third cavity, the first sheath body on the right side of the eccentric cavity is provided with a fourth cavity, and the axis of the eccentric cavity is positioned under the axis of the first sheath body; the first light transmission unit is positioned in the fifth cavity, the second light transmission unit is positioned in the third cavity, the third light transmission unit is positioned in the fourth cavity, the fourth power transmission unit is positioned in the first cavity, the fifth power transmission unit is positioned in the second cavity, and the second light transmission unit is positioned in the eccentric cavity; the first light transmission unit is composed of a first light transmission pipe and a plurality of optical fibers positioned in the first light transmission pipe, the second light transmission unit is composed of a second light transmission pipe and a plurality of optical fibers positioned in the second light transmission pipe, and the third light transmission unit is composed of a third light transmission pipe and a plurality of optical fibers positioned in the third light transmission pipe.
The self-supporting optical cable is characterized in that the light transmission unit is made of polypropylene, polybutylene terephthalate, low-density polyethylene, medium-density polyethylene, high-density polyethylene, low-smoke halogen-free polyethylene, low-smoke low-halogen polyethylene, polyvinyl chloride, nylon, polytetrafluoroethylene, TPE or TPU. The light transmission unit refers to a first light transmission unit, a second light transmission unit and a third light transmission unit.
The self-supporting optical cable is characterized in that the optical fiber is a single-mode optical fiber or a multimode optical fiber.
In the self-supporting optical cable, only one or two of the first light transmission unit, the second light transmission unit and the third light transmission unit can transmit light, and the other transmits electricity.
A self-supporting photoelectric composite cable is provided with an eccentric composite sheath, a first power transmission unit, a second power transmission unit, a third power transmission unit, a fourth power transmission unit, a fifth power transmission unit and a first light transmission unit; the eccentric composite sheath is characterized by comprising a first sheath body, a second sheath body and a third sheath body which are integrally formed, wherein the first sheath body is in a cylindrical annular shape, the second sheath body is in a cylindrical annular shape, the third sheath body is in a cylindrical annular shape, the upper part of the second sheath body protrudes out of the outer edge of the first sheath body, the lower part of the second sheath body protrudes out of the inner edge of the first sheath body, the lower part of the third sheath body is overlapped with the lower part of the first sheath body, the upper part of the third sheath body is positioned in the first sheath body, and the upper part of the third sheath body is tangent to or has a gap with the lower part of the second sheath body; the second sheath body is internally provided with a fifth cavity, the left upper part of the first sheath body, the left upper part of the second sheath body and the left upper part of the third sheath body enclose a first cavity, the right upper part of the first sheath body, the right upper part of the second sheath body and the right upper part of the third sheath body enclose a second cavity, the third sheath body is internally provided with an eccentric cavity, the first sheath body on the left side of the eccentric cavity is provided with a third cavity, the first sheath body on the right side of the eccentric cavity is provided with a fourth cavity, and the axis of the eccentric cavity is positioned under the axis of the first sheath body; the first power transmission unit is positioned in the fifth cavity, the second power transmission unit is positioned in the third cavity, the third power transmission unit is positioned in the fourth cavity, the fourth power transmission unit is positioned in the first cavity, the fifth power transmission unit is positioned in the second cavity, and the first light transmission unit is positioned in the eccentric cavity; the diameter of the second sheath body is not greater than one-half of the diameter of the first sheath body; the second sheath body has at least 1/3 located outside the first sheath body; when a gap exists between the upper part of the third sheath body and the lower part of the second sheath body, the gap is smaller than the diameter of the fourth power transmission unit, and the gap is also smaller than the diameter of the fifth power transmission unit; the second sheath body is discontinuous, the first power transmission unit is a reinforcement, and the reinforcement is a steel wire or a copper wire or a glass fiber reinforced plastic rod; or the reinforcing piece is copper or aluminum or alloy with bare or tin-plated surface; or the reinforcement is a stranded steel wire or a stranded glass fiber reinforced plastic rod; when the self-supporting photoelectric composite cable is constructed, the self-supporting photoelectric composite cable is directly placed under the existing cable, and the two sides of the second sheath body are clamped by clamps, or reinforcing pieces at discontinuous parts are clamped to realize construction and laying; or the binding component penetrates into the discontinuous part from one side of the second sheath body, penetrates through the reinforcing part and penetrates out from the other side of the second sheath body, so that the binding component at the penetrating part is positioned below the reinforcing part, then the binding component is fixed on the electric wire or the bearing rope above, and is continuously fixed along the length direction of the self-supporting photoelectric composite cable to realize construction and laying, wherein the binding component is a binding rope or a yarn for binding or a wire for binding or a steel wire or a copper wire or an aluminum wire.
A self-supporting optical cable is provided with an eccentric composite sheath, a first light transmission unit, a second light transmission unit, a third light transmission unit, a fourth power transmission unit, a fifth power transmission unit and a second power transmission unit; the eccentric composite sheath is characterized by comprising a first sheath body, a second sheath body and a third sheath body which are integrally formed, wherein the first sheath body is in a cylindrical annular shape, the second sheath body is in a cylindrical annular shape, the third sheath body is in a cylindrical annular shape, the upper part of the second sheath body protrudes out of the outer edge of the first sheath body, the lower part of the second sheath body protrudes out of the inner edge of the first sheath body, the lower part of the third sheath body is overlapped with the lower part of the first sheath body, the upper part of the third sheath body is positioned in the first sheath body, and the upper part of the third sheath body is tangent to or has a gap with the lower part of the second sheath body; the second sheath body is internally provided with a fifth cavity, the left upper part of the first sheath body, the left upper part of the second sheath body and the left upper part of the third sheath body enclose a first cavity, the right upper part of the first sheath body, the right upper part of the second sheath body and the right upper part of the third sheath body enclose a second cavity, the third sheath body is internally provided with an eccentric cavity, the first sheath body on the left side of the eccentric cavity is provided with a third cavity, the first sheath body on the right side of the eccentric cavity is provided with a fourth cavity, and the axis of the eccentric cavity is positioned under the axis of the first sheath body; the first light transmission unit is positioned in the fifth cavity, the second light transmission unit is positioned in the third cavity, the third light transmission unit is positioned in the fourth cavity, the fourth power transmission unit is positioned in the first cavity, the fifth power transmission unit is positioned in the second cavity, and the second light transmission unit is positioned in the eccentric cavity; the first light transmission unit consists of a first light transmission pipe and a plurality of optical fibers positioned in the first light transmission pipe, the second light transmission unit consists of a second light transmission pipe and a plurality of optical fibers positioned in the second light transmission pipe, and the third light transmission unit consists of a third light transmission pipe and a plurality of optical fibers positioned in the third light transmission pipe; the diameter of the second sheath body is not greater than one-half of the diameter of the first sheath body; the second sheath body has at least 1/3 located outside the first sheath body; when a gap exists between the upper part of the third sheath body and the lower part of the second sheath body, the gap is smaller than the diameter of the fourth power transmission unit, and the gap is also smaller than the diameter of the fifth power transmission unit; the second sheath body is discontinuous, the first light transmission unit is a reinforcing piece, and the reinforcing piece is a steel wire or a copper wire or a glass fiber reinforced plastic rod; or the reinforcing piece is copper or aluminum or alloy with bare or tin-plated surface; or the reinforcement is a stranded steel wire or a stranded glass fiber reinforced plastic rod; when the self-supporting optical cable is constructed, the self-supporting optical cable is directly placed below the existing cable, and the two sides of the second sheath body are clamped by clamps, or the reinforcing parts at discontinuous parts are clamped to realize construction and laying; or the binding component penetrates into the discontinuous part from one side of the second sheath body, penetrates through the reinforcing part and penetrates out from the other side of the second sheath body, so that the binding component at the penetrating part is positioned below the reinforcing part, then the binding component is fixed on the electric wire or the bearing rope above, and is continuously fixed along the length direction of the self-supporting optical cable to realize construction and laying, wherein the binding component is a binding rope or a binding yarn or a binding wire or a steel wire or a copper wire or an aluminum wire.
An eccentric composite pipeline is characterized by comprising a first sheath body, a second sheath body and a third sheath body which are integrally formed, wherein the first sheath body is in a cylindrical annular shape, the second sheath body is in a cylindrical annular shape, the third sheath body is in a cylindrical annular shape, the upper part of the second sheath body protrudes out of the outer edge of the first sheath body, the lower part of the second sheath body protrudes out of the inner edge of the first sheath body, the lower part of the third sheath body is overlapped with the lower part of the first sheath body, the upper part of the third sheath body is positioned in the first sheath body, and the upper part of the third sheath body is tangent to or has a gap with the lower part of the second sheath body; the second sheath body is internally provided with a fifth cavity, the left upper part of the first sheath body, the left upper part of the second sheath body and the left upper part of the third sheath body enclose a first cavity, the right upper part of the first sheath body, the right upper part of the second sheath body and the right upper part of the third sheath body enclose a second cavity, the third sheath body is internally provided with an eccentric cavity, the first sheath body on the left side of the eccentric cavity is provided with a third cavity, the first sheath body on the right side of the eccentric cavity is provided with a fourth cavity, and the axis of the eccentric cavity is positioned under the axis of the first sheath body; the diameter of the second sheath body is not greater than one-half of the diameter of the first sheath body; the second sheath body has at least 1/3 located outside the first sheath body.
An eccentric composite pipeline is characterized by comprising a first sheath body, a second sheath body and a third sheath body which are integrally formed, wherein the first sheath body is in a cylindrical annular shape, the second sheath body is in a cylindrical annular shape, the third sheath body is in a cylindrical annular shape, the upper part of the second sheath body protrudes out of the outer edge of the first sheath body, the lower part of the second sheath body protrudes out of the inner edge of the first sheath body, the lower part of the third sheath body is overlapped with the lower part of the first sheath body, the upper part of the third sheath body is positioned in the first sheath body, and the upper part of the third sheath body is tangent to or has a gap with the lower part of the second sheath body; the second sheath body is internally provided with a fifth cavity, the left upper part of the first sheath body, the left upper part of the second sheath body and the left upper part of the third sheath body enclose a first cavity, the right upper part of the first sheath body, the right upper part of the second sheath body and the right upper part of the third sheath body enclose a second cavity, the third sheath body is internally provided with an eccentric cavity, the first sheath body on the left side of the eccentric cavity is provided with a third cavity, the first sheath body on the right side of the eccentric cavity is provided with a fourth cavity, and the axis of the eccentric cavity is positioned under the axis of the first sheath body; the diameter of the second sheath body is not greater than one-half of the diameter of the first sheath body; the second sheath body has at least 1/3 located outside the first sheath body; the second sheath body is discontinuous, and the discontinuous second sheath body means that the second sheath body positioned outside the outer edge of the second sheath body is discontinuous in the length direction, and one section of the second sheath body is provided with or not provided with, and the second sheath body is circulated in sequence.
The invention has the following main beneficial effects: the structure is simple, the molding is easy, the stripping is convenient, the power transmission part is not broken when stripping, the heat dissipation is good, and the optical fiber density is high.
Drawings
FIG. 1 is a schematic representation of a perspective anatomical segment of an eccentric composite sheath for use in the present application.
Fig. 2 is an enlarged cross-sectional structure diagram of fig. 1.
Fig. 3 is a schematic perspective view of a section of an anatomical structure according to example 1 of the present application.
Fig. 4 is an enlarged cross-sectional view of fig. 3.
Fig. 5 is a schematic perspective view of a section of anatomy according to example 2 of the present application.
Fig. 6 is an enlarged cross-sectional view of fig. 5.
Fig. 7 is a schematic perspective view of a section of anatomy according to example 3 of the present application.
Fig. 8 is an enlarged cross-sectional view of fig. 7.
In order that those skilled in the art will more accurately and clearly understand and practice the present application, reference is now made to the following descriptions taken in conjunction with the accompanying drawings, in which: 1-eccentric composite sheath, 11-first sheath body, 12-second sheath body, 13-third sheath body, 14-first cavity, 15-second cavity, 16-third cavity, 17-fourth cavity, 110-eccentric cavity, 120-fifth cavity, 21-first power transmission unit, 22-second power transmission unit, 23-third power transmission unit, 31-fourth power transmission unit, 32-fifth power transmission unit, 4-first power transmission unit, 5-second power transmission unit, 61-first light transmission unit, 62-second light transmission unit, 63-third light transmission unit.
Detailed Description
Examples 1
Referring to fig. 1 to 4, a self-supporting optical/electrical composite cable includes an eccentric composite sheath 1, a first power transmission unit 21, a second power transmission unit 22, a third power transmission unit 23, a fourth power transmission unit 31, a fifth power transmission unit 32, and a first power transmission unit 4; the eccentric composite sheath 1 is characterized by comprising a first sheath body 11, a second sheath body 12 and a third sheath body 13 which are integrally formed, wherein the first sheath body 11 is in a cylindrical annular shape, the second sheath body 12 is in a cylindrical annular shape, the third sheath body 13 is in a cylindrical annular shape, the upper part of the second sheath body 12 protrudes out of the outer edge of the first sheath body 11, the lower part of the second sheath body 12 protrudes out of the inner edge of the first sheath body 11, the lower part of the third sheath body 13 is overlapped with the lower part of the first sheath body 11, the upper part of the third sheath body 13 is positioned in the first sheath body 11, and the upper part of the third sheath body 13 is tangent to or has a gap with the lower part of the second sheath body 12; the fifth cavity 120 is arranged in the second sheath body 12, the first cavity 14 is defined by the left upper parts of the first sheath body 11, the second sheath body 12 and the third sheath body 13, the second cavity 15 is defined by the right upper parts of the first sheath body 11, the second sheath body 12 and the third sheath body 13, the eccentric cavity 110 is arranged in the third sheath body 13, the third cavity 16 is arranged on the first sheath body 11 on the left side of the eccentric cavity 110, the fourth cavity 17 is arranged on the first sheath body 11 on the right side of the eccentric cavity 110, and the axis of the eccentric cavity 110 is positioned right below the axis of the first sheath body 11; the first power transmission unit 21 is located in the fifth cavity 120, the second power transmission unit 22 is located in the third cavity 16, the third power transmission unit 23 is located in the fourth cavity 17, the fourth power transmission unit 31 is located in the first cavity 14, the fifth power transmission unit 32 is located in the second cavity 15, and the first light transmission unit 4 is located in the eccentric cavity 110.
The self-supporting photoelectric composite cable is characterized in that the first power transmission unit is composed of a first conductor and a first insulating sleeve covering the first conductor.
The self-supporting photoelectric composite cable is characterized in that the second power transmission unit is composed of a second conductor and a second insulating sleeve coated outside the second conductor.
The self-supporting photoelectric composite cable is characterized in that the third power transmission unit is composed of a third conductor and a third insulating sleeve covering the third conductor.
The self-supporting photoelectric composite cable is characterized in that the fourth power transmission unit is composed of a fourth conductor and a fourth insulating sleeve covering the fourth conductor. In this embodiment, the number of the fourth power transmission units is two, and may be one or more.
The self-supporting photoelectric composite cable is characterized in that the fifth power transmission unit is composed of a fifth conductor and a fifth insulating sleeve covering the fifth conductor. In this embodiment, the number of the fifth power transmission units is two, and may be one or more.
In this embodiment, the first cavity and the second cavity are both in an approximately lung-shaped structure with a large top and a small bottom, which is convenient for fixing the fourth power transmission unit and the fifth power transmission unit.
The self-supporting photoelectric composite cable is characterized in that the first light transmission unit comprises a loose sleeve and a plurality of optical fiber ribbons positioned in the loose sleeve.
The self-supporting photoelectric composite cable is characterized in that the loose tube is made of polypropylene, polybutylene terephthalate, low-density polyethylene, medium-density polyethylene, high-density polyethylene, low-smoke halogen-free polyethylene, low-smoke low-halogen polyethylene, polyvinyl chloride, nylon, polytetrafluoroethylene, TPE or TPU.
The self-supporting photoelectric composite cable is characterized in that the first sheath body, the second sheath body and the third sheath body are made of polypropylene, polybutylene terephthalate, low-density polyethylene, medium-density polyethylene, high-density polyethylene, low-smoke halogen-free polyethylene, low-smoke low-halogen polyethylene, polyvinyl chloride, nylon, polytetrafluoroethylene, TPE or TPU.
The self-supporting photoelectric composite cable is characterized in that the insulating sleeve is made of polypropylene, polybutylene terephthalate, low-density polyethylene, medium-density polyethylene, high-density polyethylene, low-smoke halogen-free polyethylene, low-smoke low-halogen polyethylene, polyvinyl chloride, nylon, polytetrafluoroethylene, TPE or TPU. The insulating sleeve refers to a first insulating sleeve, a second insulating sleeve, a third insulating sleeve, a fourth insulating sleeve and a fifth insulating sleeve.
The self-supporting photoelectric composite cable is characterized in that the conductor is made of copper or aluminum or alloy. The conductor refers to a first conductor, a second conductor, a third conductor, a fourth conductor and a fifth conductor.
EXAMPLES example 2
Referring to fig. 5 and 6, and to fig. 1 to 4, a self-supporting optical-electrical composite cable is substantially the same as embodiment 1, except that the first light transmission unit 4 is replaced by a second light transmission unit 5, which is composed of a loose tube and a plurality of optical fibers disposed in the loose tube.
The self-supporting photoelectric composite cable is characterized in that the loose tube is made of polypropylene, polybutylene terephthalate, low-density polyethylene, medium-density polyethylene, high-density polyethylene, low-smoke halogen-free polyethylene, low-smoke low-halogen polyethylene, polyvinyl chloride, nylon, polytetrafluoroethylene, TPE or TPU.
The self-supporting photoelectric composite cable is characterized in that the optical fiber is a single-mode optical fiber or a multi-mode optical fiber.
In the embodiment 1 or the embodiment 2 of the present application, the first power transmission unit, the second power transmission unit, and the third power transmission unit may also be reinforcements, and the reinforcements are steel wires, copper wires, or glass fiber reinforced plastic rods, so that mechanical properties such as tensile strength and compressive strength can be enhanced; it may also be bare or tin-plated copper or aluminum or an alloy, which may further save material.
EXAMPLE 3
Referring to fig. 7 and 8, and fig. 1 to 6, a self-supporting optical cable is substantially the same as embodiment 2, except that a first light transmitting unit 61 is substituted for a first power transmitting unit 21, a second light transmitting unit 62 is substituted for a second power transmitting unit 22, and a third light transmitting unit 63 is substituted for a third power transmitting unit 23; the first light transmission unit 61 is composed of a first light transmission pipe and a plurality of optical fibers positioned in the first light transmission pipe, the second light transmission unit 62 is composed of a second light transmission pipe and a plurality of optical fibers positioned in the second light transmission pipe, and the third light transmission unit 63 is composed of a third light transmission pipe and a plurality of optical fibers positioned in the third light transmission pipe.
The self-supporting optical cable is characterized in that the light transmission unit is made of polypropylene, polybutylene terephthalate, low-density polyethylene, medium-density polyethylene, high-density polyethylene, low-smoke halogen-free polyethylene, low-smoke low-halogen polyethylene, polyvinyl chloride, nylon, polytetrafluoroethylene, TPE or TPU. The light transmission unit refers to a first light transmission unit, a second light transmission unit and a third light transmission unit.
The self-supporting optical cable is characterized in that the optical fiber is a single-mode optical fiber or a multimode optical fiber.
In the self-supporting optical cable, only one light transmission unit or only two light transmission units can be arranged in the first light transmission unit, the second light transmission unit and the third light transmission unit, and the other light transmission units transmit electricity as in the above embodiment.
In this application, the diameter of the second sheath body is not greater than one-half of the diameter of the first sheath body.
In this application, the second sheath body has at least 1/3 located outside the first sheath body.
In this application, the axis of the third cavity, the axis of the fourth cavity, and the axis of the eccentric cavity are in the first plane.
In the application, the axes of the fifth cavity and the eccentric cavity are in the second plane.
In this application, the second plane bisects the optical cable or the opto-electrical composite cable.
In this application, the first plane is perpendicular to the second plane.
As a further improvement, in the present application, the second sheath body may be discontinuous, wherein the fifth cavity 120 may further include a reinforcement, and the reinforcement may be a twisted steel wire or a twisted glass fiber reinforced plastic rod, in which case, the present application may be directly placed under the existing cable, and the clamp is used to clamp two sides of the second sheath body, or clamp the reinforcement at the discontinuous position, so as to greatly facilitate the hanging, avoid the multiple clamping of the cables with different purposes in the prior art, avoid the phenomenon that the cable performance is deteriorated due to the clamping of the whole cable in the prior art, and even further, a binding member such as a binding rope, a binding yarn/wire, a steel wire, a copper wire, etc. may be used to penetrate through the discontinuous position from one side of the second sheath body, penetrate through the reinforcement, and penetrate out from the other side of the second sheath body, the binding component at the penetrating position is located below the reinforcing piece, then the binding component is fixed on the electric wire or the bearing rope above, and the electric wire or the bearing rope is continuously fixed along the length direction of the cable in the application, namely the cable is laid and fixed.
The structure in this application has avoided the splice bar problem of the self-supporting cable among the prior art ingeniously, makes the product easily make, the finished product qualification rate is high, can not produce the askew phenomenon of turning round, and owing to do not need the splice bar, so consume reduce, qualification rate height etc. make the combined cost descend by a wide margin, and this application is easily under construction.
In the application, the fourth power transmission unit is positioned in the first cavity, and the fifth power transmission unit is positioned in the second cavity, so that the phenomenon that the fourth power transmission unit and the fifth power transmission unit are combined with the first sheath body into a whole and are not easy to peel is effectively avoided, inspection and construction are more convenient, and heat dissipation is increased; in the application, the second sheath body protrudes out of the first sheath body, so that the first power transmission unit is easy to identify and peel, the second power transmission unit and the third power transmission unit are easier to identify, the second sheath body also plays a role in identification, the approximate positions of the second power transmission unit and the third power transmission unit are more exact, and no other identification is needed. Since the diameters and sizes of the first power transmission unit, the second power transmission unit and the third power transmission unit are much larger than those of the fourth power transmission unit and the fifth power transmission unit, the second power transmission unit and the third power transmission unit can be easily peeled even if the second power transmission unit and the third power transmission unit are bonded with the first sheath body, the conductor can be peeled without breaking the conductor, and similarly, the first power transmission unit is easily taken out from the second sheath body, and the signal line in the prior art is very easy to break when being peeled. In this application, the existence of first light transmission unit, second light transmission unit, third light transmission unit has increased communication density greatly.
The second sheath body is discontinuous in the application, which means that the second sheath body located at the outer edge part of the second sheath body is discontinuous in the length direction, and has one section or one section, and the two sections are not continuous and are circulated in sequence, or the lengths of the continuous parts can be equal or unequal.
In the application, the number of the fourth power transmission units of the first cavity is not limited to two, and the number of the fourth power transmission units can be other numbers; the number of the fifth power transmission units in the second cavity is not limited to two, and other fifth power transmission units can be arranged; when the upper part of the third sheath body is tangent to the lower part of the second sheath body, the first cavity and the second cavity are effectively isolated; when a gap is reserved between the upper part of the third sheath body and the lower part of the second sheath body, the gap is smaller than the diameter of the fourth power transmission unit, and the gap is also smaller than the diameter of the fifth power transmission unit, so that if the power transmission units in the first cavity and the second cavity are damaged, the power transmission units can be pulled through the gap by virtue of the toughness of the third sheath body and the second sheath body to realize replacement, updating, substitution, repair and the like, and therefore the device is more flexible and reliable.
The eccentric composite sheath in this application may also be sold separately, so it is also the scope of this application to refer to it as an eccentric composite pipe.
The application overcomes the defects of the central beam tube type optical cable with parallel steel wires and the improved transmission optical cable thereof in the prior art, and simultaneously overcomes the defect in CN 2713490Y.
The invention has the following main beneficial effects: the structure is simple, the molding is easy, the stripping is convenient, the power transmission part is not broken when stripping, the heat dissipation is good, and the optical fiber density is high.
The above-mentioned embodiments are merely preferred technical solutions of the present invention, and should not be construed as limiting the present invention. The protection scope of the present invention is defined by the claims, and includes equivalents of technical features of the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.

Claims (10)

1. A self-supporting photoelectric composite cable is provided with an eccentric composite sheath, a first power transmission unit, a second power transmission unit, a third power transmission unit, a fourth power transmission unit, a fifth power transmission unit and a first light transmission unit; the eccentric composite sheath is characterized by comprising a first sheath body, a second sheath body and a third sheath body which are integrally formed, wherein the first sheath body is in a cylindrical annular shape, the second sheath body is in a cylindrical annular shape, the third sheath body is in a cylindrical annular shape, the upper part of the second sheath body protrudes out of the outer edge of the first sheath body, the lower part of the second sheath body protrudes out of the inner edge of the first sheath body, the lower part of the third sheath body is overlapped with the lower part of the first sheath body, the upper part of the third sheath body is positioned in the first sheath body, and the upper part of the third sheath body is tangent to or has a gap with the lower part of the second sheath body; the second sheath body is internally provided with a fifth cavity, the left upper part of the first sheath body, the left upper part of the second sheath body and the left upper part of the third sheath body enclose a first cavity, the right upper part of the first sheath body, the right upper part of the second sheath body and the right upper part of the third sheath body enclose a second cavity, the third sheath body is internally provided with an eccentric cavity, the first sheath body on the left side of the eccentric cavity is provided with a third cavity, the first sheath body on the right side of the eccentric cavity is provided with a fourth cavity, and the axis of the eccentric cavity is positioned under the axis of the first sheath body; the first power transmission unit is positioned in the fifth cavity, the second power transmission unit is positioned in the third cavity, the third power transmission unit is positioned in the fourth cavity, the fourth power transmission unit is positioned in the first cavity, the fifth power transmission unit is positioned in the second cavity, and the first light transmission unit is positioned in the eccentric cavity; the diameter of the second sheath body is not greater than one-half of the diameter of the first sheath body; the second sheath body has at least 1/3 located outside the first sheath body; when a gap is formed between the upper part of the third sheath body and the lower part of the second sheath body, the gap is smaller than the diameter of the fourth power transmission unit, and the gap is also smaller than the diameter of the fifth power transmission unit.
2. The self-supporting optical-electrical composite cable of claim 1, wherein the first light-transmitting unit is replaced by a second light-transmitting unit, said second light-transmitting unit comprising a loose tube and a plurality of optical fibers disposed within the loose tube.
3. A self-supporting optical-electrical composite cable according to claim 1 or claim 2, wherein the first power transmission unit comprises a first conductor and a first insulating jacket covering the first conductor.
4. The self-supporting optical-electrical composite cable of claim 3, wherein the first, second and third jacket bodies are made of polypropylene, polybutylene terephthalate, low-density polyethylene, medium-density polyethylene, high-density polyethylene, low-smoke halogen-free polyethylene, low-smoke low-halogen polyethylene, polyvinyl chloride, nylon, polytetrafluoroethylene, TPE or TPU.
5. The self-supporting optical-electrical composite cable of claim 4, wherein the first light-transmitting unit comprises a loose tube and a plurality of optical fiber ribbons disposed in the loose tube, each optical fiber ribbon having at least one optical fiber therein; the material of the loose tube is polypropylene or polybutylene terephthalate or low-density polyethylene or medium-density polyethylene or high-density polyethylene or low-smoke halogen-free polyethylene or low-smoke low-halogen polyethylene or polyvinyl chloride or nylon or polytetrafluoroethylene or TPE or TPU; the optical fiber is a single mode optical fiber or a multimode optical fiber.
6. A self-supporting photoelectric composite cable is provided with an eccentric composite sheath, a first power transmission unit, a second power transmission unit, a third power transmission unit, a fourth power transmission unit, a fifth power transmission unit and a first light transmission unit; the eccentric composite sheath is characterized by comprising a first sheath body, a second sheath body and a third sheath body which are integrally formed, wherein the first sheath body is in a cylindrical annular shape, the second sheath body is in a cylindrical annular shape, the third sheath body is in a cylindrical annular shape, the upper part of the second sheath body protrudes out of the outer edge of the first sheath body, the lower part of the second sheath body protrudes out of the inner edge of the first sheath body, the lower part of the third sheath body is overlapped with the lower part of the first sheath body, the upper part of the third sheath body is positioned in the first sheath body, and the upper part of the third sheath body is tangent to or has a gap with the lower part of the second sheath body; the second sheath body is internally provided with a fifth cavity, the left upper part of the first sheath body, the left upper part of the second sheath body and the left upper part of the third sheath body enclose a first cavity, the right upper part of the first sheath body, the right upper part of the second sheath body and the right upper part of the third sheath body enclose a second cavity, the third sheath body is internally provided with an eccentric cavity, the first sheath body on the left side of the eccentric cavity is provided with a third cavity, the first sheath body on the right side of the eccentric cavity is provided with a fourth cavity, and the axis of the eccentric cavity is positioned under the axis of the first sheath body; the first power transmission unit is positioned in the fifth cavity, the second power transmission unit is positioned in the third cavity, the third power transmission unit is positioned in the fourth cavity, the fourth power transmission unit is positioned in the first cavity, the fifth power transmission unit is positioned in the second cavity, and the first light transmission unit is positioned in the eccentric cavity; the diameter of the second sheath body is not greater than one-half of the diameter of the first sheath body; the second sheath body has at least 1/3 located outside the first sheath body; when a gap exists between the upper part of the third sheath body and the lower part of the second sheath body, the gap is smaller than the diameter of the fourth power transmission unit, and the gap is also smaller than the diameter of the fifth power transmission unit; the second sheath body is discontinuous, the first power transmission unit is a reinforcement, and the reinforcement is a steel wire or a copper wire or a glass fiber reinforced plastic rod; or the reinforcing piece is copper or aluminum or alloy with bare or tin-plated surface; or the reinforcement is a stranded steel wire or a stranded glass fiber reinforced plastic rod; when the self-supporting photoelectric composite cable is constructed, the self-supporting photoelectric composite cable is directly placed under the existing cable, and the two sides of the second sheath body are clamped by clamps, or reinforcing pieces at discontinuous parts are clamped to realize construction and laying; or the binding component penetrates into the discontinuous part from one side of the second sheath body, penetrates through the reinforcing part and penetrates out from the other side of the second sheath body, so that the binding component at the penetrating part is positioned below the reinforcing part, then the binding component is fixed on the electric wire or the bearing rope above, and is continuously fixed along the length direction of the self-supporting photoelectric composite cable to realize construction and laying, wherein the binding component is a binding rope or a yarn for binding or a wire for binding or a steel wire or a copper wire or an aluminum wire.
7. A self-supporting optical cable is provided with an eccentric composite sheath, a first light transmission unit, a second light transmission unit, a third light transmission unit, a fourth power transmission unit, a fifth power transmission unit and a second power transmission unit; the eccentric composite sheath is characterized by comprising a first sheath body, a second sheath body and a third sheath body which are integrally formed, wherein the first sheath body is in a cylindrical annular shape, the second sheath body is in a cylindrical annular shape, the third sheath body is in a cylindrical annular shape, the upper part of the second sheath body protrudes out of the outer edge of the first sheath body, the lower part of the second sheath body protrudes out of the inner edge of the first sheath body, the lower part of the third sheath body is overlapped with the lower part of the first sheath body, the upper part of the third sheath body is positioned in the first sheath body, and the upper part of the third sheath body is tangent to or has a gap with the lower part of the second sheath body; the second sheath body is internally provided with a fifth cavity, the left upper part of the first sheath body, the left upper part of the second sheath body and the left upper part of the third sheath body enclose a first cavity, the right upper part of the first sheath body, the right upper part of the second sheath body and the right upper part of the third sheath body enclose a second cavity, the third sheath body is internally provided with an eccentric cavity, the first sheath body on the left side of the eccentric cavity is provided with a third cavity, the first sheath body on the right side of the eccentric cavity is provided with a fourth cavity, and the axis of the eccentric cavity is positioned under the axis of the first sheath body; the first light transmission unit is positioned in the fifth cavity, the second light transmission unit is positioned in the third cavity, the third light transmission unit is positioned in the fourth cavity, the fourth power transmission unit is positioned in the first cavity, the fifth power transmission unit is positioned in the second cavity, and the second light transmission unit is positioned in the eccentric cavity; the first light transmission unit consists of a first light transmission pipe and a plurality of optical fibers positioned in the first light transmission pipe, the second light transmission unit consists of a second light transmission pipe and a plurality of optical fibers positioned in the second light transmission pipe, and the third light transmission unit consists of a third light transmission pipe and a plurality of optical fibers positioned in the third light transmission pipe; the diameter of the second sheath body is not greater than one-half of the diameter of the first sheath body; the second sheath body has at least 1/3 located outside the first sheath body; when a gap is formed between the upper part of the third sheath body and the lower part of the second sheath body, the gap is smaller than the diameter of the fourth power transmission unit, and the gap is also smaller than the diameter of the fifth power transmission unit.
8. A self-supporting optical cable according to claim 7, wherein the material of the light transmitting unit is polypropylene or polybutylene terephthalate or low density polyethylene or medium density polyethylene or high density polyethylene or low smoke zero halogen polyethylene or low smoke low halogen polyethylene or polyvinyl chloride or nylon or polytetrafluoroethylene or TPE or TPU; the light transmission unit refers to a first light transmission unit, a second light transmission unit and a third light transmission unit; the optical fiber is a single mode optical fiber or a multimode optical fiber.
9. A self-supporting optical cable is provided with an eccentric composite sheath, a first light transmission unit, a second light transmission unit, a third light transmission unit, a fourth power transmission unit, a fifth power transmission unit and a second power transmission unit; the eccentric composite sheath is characterized by comprising a first sheath body, a second sheath body and a third sheath body which are integrally formed, wherein the first sheath body is in a cylindrical annular shape, the second sheath body is in a cylindrical annular shape, the third sheath body is in a cylindrical annular shape, the upper part of the second sheath body protrudes out of the outer edge of the first sheath body, the lower part of the second sheath body protrudes out of the inner edge of the first sheath body, the lower part of the third sheath body is overlapped with the lower part of the first sheath body, the upper part of the third sheath body is positioned in the first sheath body, and the upper part of the third sheath body is tangent to or has a gap with the lower part of the second sheath body; the second sheath body is internally provided with a fifth cavity, the left upper part of the first sheath body, the left upper part of the second sheath body and the left upper part of the third sheath body enclose a first cavity, the right upper part of the first sheath body, the right upper part of the second sheath body and the right upper part of the third sheath body enclose a second cavity, the third sheath body is internally provided with an eccentric cavity, the first sheath body on the left side of the eccentric cavity is provided with a third cavity, the first sheath body on the right side of the eccentric cavity is provided with a fourth cavity, and the axis of the eccentric cavity is positioned under the axis of the first sheath body; the first light transmission unit is positioned in the fifth cavity, the second light transmission unit is positioned in the third cavity, the third light transmission unit is positioned in the fourth cavity, the fourth power transmission unit is positioned in the first cavity, the fifth power transmission unit is positioned in the second cavity, and the second light transmission unit is positioned in the eccentric cavity; the first light transmission unit consists of a first light transmission pipe and a plurality of optical fibers positioned in the first light transmission pipe, the second light transmission unit consists of a second light transmission pipe and a plurality of optical fibers positioned in the second light transmission pipe, and the third light transmission unit consists of a third light transmission pipe and a plurality of optical fibers positioned in the third light transmission pipe; the diameter of the second sheath body is not greater than one-half of the diameter of the first sheath body; the second sheath body has at least 1/3 located outside the first sheath body; when a gap exists between the upper part of the third sheath body and the lower part of the second sheath body, the gap is smaller than the diameter of the fourth power transmission unit, and the gap is also smaller than the diameter of the fifth power transmission unit; the second sheath body is discontinuous, the first light transmission unit is a reinforcing piece, and the reinforcing piece is a steel wire or a copper wire or a glass fiber reinforced plastic rod; or the reinforcing piece is copper or aluminum or alloy with bare or tin-plated surface; or the reinforcement is a stranded steel wire or a stranded glass fiber reinforced plastic rod; when the self-supporting optical cable is constructed, the self-supporting optical cable is directly placed below the existing cable, and the two sides of the second sheath body are clamped by clamps, or the reinforcing parts at discontinuous parts are clamped to realize construction and laying; or the binding component penetrates into the discontinuous part from one side of the second sheath body, penetrates through the reinforcing part and penetrates out from the other side of the second sheath body, so that the binding component at the penetrating part is positioned below the reinforcing part, then the binding component is fixed on the electric wire or the bearing rope above, and is continuously fixed along the length direction of the self-supporting optical cable to realize construction and laying, wherein the binding component is a binding rope or a binding yarn or a binding wire or a steel wire or a copper wire or an aluminum wire.
10. An eccentric composite pipeline is characterized by comprising a first sheath body, a second sheath body and a third sheath body which are integrally formed, wherein the first sheath body is in a cylindrical annular shape, the second sheath body is in a cylindrical annular shape, the third sheath body is in a cylindrical annular shape, the upper part of the second sheath body protrudes out of the outer edge of the first sheath body, the lower part of the second sheath body protrudes out of the inner edge of the first sheath body, the lower part of the third sheath body is overlapped with the lower part of the first sheath body, the upper part of the third sheath body is positioned in the first sheath body, and the upper part of the third sheath body is tangent to or has a gap with the lower part of the second sheath body; the second sheath body is internally provided with a fifth cavity, the left upper part of the first sheath body, the left upper part of the second sheath body and the left upper part of the third sheath body enclose a first cavity, the right upper part of the first sheath body, the right upper part of the second sheath body and the right upper part of the third sheath body enclose a second cavity, the third sheath body is internally provided with an eccentric cavity, the first sheath body on the left side of the eccentric cavity is provided with a third cavity, the first sheath body on the right side of the eccentric cavity is provided with a fourth cavity, and the axis of the eccentric cavity is positioned under the axis of the first sheath body; the diameter of the second sheath body is not greater than one-half of the diameter of the first sheath body; the second sheath body has at least 1/3 located outside the first sheath body; or an eccentric composite pipeline, which is characterized by comprising a first sheath body, a second sheath body and a third sheath body which are integrally formed, wherein the first sheath body is in a cylindrical annular shape, the second sheath body is in a cylindrical annular shape, the third sheath body is in a cylindrical annular shape, the upper part of the second sheath body protrudes out of the outer edge of the first sheath body, the lower part of the second sheath body protrudes out of the inner edge of the first sheath body, the lower part of the third sheath body is overlapped with the lower part of the first sheath body, the upper part of the third sheath body is positioned in the first sheath body, and the upper part of the third sheath body is tangent to or has a gap with the lower part of the second sheath body; the second sheath body is internally provided with a fifth cavity, the left upper part of the first sheath body, the left upper part of the second sheath body and the left upper part of the third sheath body enclose a first cavity, the right upper part of the first sheath body, the right upper part of the second sheath body and the right upper part of the third sheath body enclose a second cavity, the third sheath body is internally provided with an eccentric cavity, the first sheath body on the left side of the eccentric cavity is provided with a third cavity, the first sheath body on the right side of the eccentric cavity is provided with a fourth cavity, and the axis of the eccentric cavity is positioned under the axis of the first sheath body; the diameter of the second sheath body is not greater than one-half of the diameter of the first sheath body; the second sheath body has at least 1/3 located outside the first sheath body; the second sheath body is discontinuous, and the discontinuous second sheath body means that the second sheath body positioned outside the outer edge of the second sheath body is discontinuous in the length direction, and one section of the second sheath body is provided with or not provided with, and the second sheath body is circulated in sequence.
CN202010809768.9A 2020-08-13 2020-08-13 Self-supporting photoelectric composite cable and optical cable Withdrawn CN111933344A (en)

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