Easily-torn anti-torsion tensile radio frequency coaxial cable

Abstract

The invention relates to the technical field of easy-to-tear torsion-resistant tensile radio frequency coaxial cables, in particular to an easy-to-tear torsion-resistant tensile radio frequency coaxial cable, which comprises a plurality of cable bodies, the plurality of cable bodies are externally provided with the same total shielding layer, the total shielding layer is externally provided with a total sheath layer, and the total sheath layer is externally provided with a sheath layer. And a first tearing rope is arranged between the total sheath layer and the total shielding layer. The radio frequency coaxial point cable is formed by combining a plurality of groups of easy-to-tear torsion-resistant tensile radio frequency coaxial cables, one-time wiring can be realized, and free and simple grouping of a single cable or a plurality of cables can be realized; meanwhile, reinforcing support pieces are arranged among the plurality of cable bodies, so that the longitudinal tensile force on the cable can be reduced, and the tensile force can be resisted; the first tearing rope and the second tearing rope facilitate stripping of the total sheath layer and the sheath layer respectively, and the construction efficiency is improved. In addition, a total shielding structure is added, self signal shielding and external interference shielding are achieved, and signal transmission of communication equipment is guaranteed. And the reinforcers, the supporting strips and the sheath layer of the cable body are integrally formed, so that the overall torsion resistance of the cable can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of tearable, torsion-resistant and tensile-resistant radio frequency coaxial cables, and in particular to tearable, torsion-resistant and tensile-resistant radio frequency coaxial cables. Background Art

[0002] A tearable, torsion-resistant and tensile-resistant RF coaxial cable is widely used in mobile communications. In the signal transmission from the antenna of the base station to the machine room, the indoor distributed communication system, the communication between communication equipment, etc., the carrier communication of the RF signal has multiple inputs and multiple outputs. Two or more tearable, torsion-resistant and tensile-resistant RF coaxial cables are required to be connected to each other for communication at the same time. During construction, multiple tearable, torsion-resistant and tensile-resistant RF coaxial cables need to be repeatedly wired.

[0003] Usually, a tear-resistant, torsion-resistant and tensile-resistant RF coaxial cable is used as a single cable or in pairs. When a tear-resistant, torsion-resistant and tensile-resistant RF coaxial cable is used for long-distance transmission or vertical laying, the cable itself needs to withstand a large longitudinal tensile force, which can easily cause cable damage.

[0004] The parallel double lines only have two pieces of the same type of tear-resistant, torsion-resistant and tensile-resistant RF coaxial cables, which cannot meet the multi-channel communication needs of base stations, equipment, etc., and multiple pieces of the same type of tear-resistant, torsion-resistant and tensile-resistant RF coaxial cables still need to be repeatedly laid.

[0005] The sheath stripping efficiency of an easy-to-tear, torsion-resistant and tensile-resistant radio frequency coaxial cable is low during construction, and the operation is inconvenient. Summary of the invention

[0006] The technical problem to be solved by the present invention is: in order to solve the technical problems in the prior art, the present invention provides an easy-to-tear, torsion-resistant and tensile-resistant radio frequency coaxial cable.

[0007] The technical solution adopted by the present invention to solve its technical problem is: an easy-to-tear, torsion-resistant and tensile-resistant radio frequency coaxial cable, including multiple cable bodies, the multiple cable bodies are provided with the same overall shielding layer outside, the overall shielding layer is provided with an overall sheath layer outside, and a first tear rope is provided between the overall sheath layer and the overall shielding layer.

[0008] Furthermore, reinforcing supports are provided between the plurality of cable bodies.

[0009] Furthermore, the reinforcing support member includes a reinforcing member and a supporting bar, the number of the supporting bars is the same as the number of the cable bodies, each of the supporting bars is connected to a cable body, and one end of each of the supporting bars away from the cable body is connected to the reinforcing member.

[0010] Furthermore, the reinforcement member, the support bar and the outer layer of the cable body are integrally formed.

[0011] Furthermore, the cable body includes an inner conductor, an insulating layer, an outer conductor and a sheath layer which are arranged in sequence from the inside to the outside.

[0012] Furthermore, a second tear cord is provided between the sheath layer and the outer conductor.

[0013] Furthermore, a plurality of the cable bodies are arranged in an array along the circumference of the reinforcement member on the outer side of the reinforcement member.

[0014] Furthermore, when the cable bodies are provided in two pieces, the cross-section of the overall sheath layer is elliptical.

[0015] Furthermore, when the number of the cable bodies is three, the cross-section of the overall sheath layer is circular.

[0016] Furthermore, when the number of the cable bodies is four, the cross-section of the overall sheath layer is a quadrilateral.

[0017] The beneficial effect of the present invention is that the RF coaxial point cable of the present invention is composed of multiple groups of parallel lines of a plurality of easy-to-tear, torsion-resistant and tensile-resistant RF coaxial cables, which can realize one-time wiring, and realize single or multiple free and simple grouping; at the same time, there are reinforcing supports between each plurality of cable bodies, which can reduce the longitudinal tension of the cable itself and resist the tension; the first tear rope and the second tear rope are respectively convenient for the peeling of the total sheath layer and the sheath layer, thereby improving the construction efficiency. In addition, the total shielding structure is added to achieve self-signal shielding and shielding of external interference, thereby ensuring the signal transmission of the communication equipment. The reinforcing member, the support bar and the sheath layer of the cable body are integrally formed, which can improve the torsion resistance of the overall cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a side schematic diagram of an overall easy-to-tear, torsion-resistant and tensile-resistant radio frequency coaxial cable in the present invention.

[0020] Figure 2 It is a three-dimensional schematic diagram of an overall tearable, torsion-resistant and tensile-resistant radio frequency coaxial cable in the present invention.

[0021] Figure 3 It is a schematic diagram showing that the cable bodies are arranged in three in the present invention.

[0022] Figure 4 It is a schematic diagram showing that the number of cable bodies is four in the present invention.

[0023] In the figure: 1. cable body; 11. inner conductor; 12. insulation layer; 13. outer conductor; 14. sheath layer; 15. second tear rope; 2. overall shielding layer; 3. overall sheath layer; 4. reinforcing support member; 41. reinforcing member; 42. support bar; 5. first tear rope. DETAILED DESCRIPTION

[0024] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] The invention discloses a tearable, torsion-resistant and tensile-resistant radio frequency coaxial cable.

[0027] Reference Figure 1 and Figure 2A tearable, torsion-resistant and tensile-resistant radio frequency coaxial cable comprises a plurality of cable bodies 1, wherein the plurality of cable bodies 1 are provided with a same general shielding layer 2, and the general shielding layer 2 is provided with a general sheath layer 3, and a first tear rope 5 is provided between the general sheath layer 3 and the general shielding layer 2, so as to facilitate the stripping of the general sheath layer 3. The cable body 1 comprises an inner conductor 11, an insulating layer 12, an outer conductor 13 and a sheath layer 14 arranged in sequence from the inside to the outside, and a second tear rope 15 is provided between the sheath layer 14 and the outer conductor 13, so as to facilitate the stripping of the sheath layer 14 and improve the construction efficiency. The general shielding layer 2 can effectively protect the signal transmission within the plurality of tearable, torsion-resistant and tensile-resistant radio frequency coaxial cables, shield external interference, and protect other cables from being interfered by the signal transmitted by the tearable, torsion-resistant and tensile-resistant radio frequency coaxial cable.

[0028] A reinforcing support 4 is provided between the plurality of cable bodies 1. The reinforcing support 4 comprises a reinforcing member 41 and a supporting bar 42. The number of the supporting bars 42 is the same as the number of the cable bodies 1. Each supporting bar 42 is connected to a cable body 1, and one end of each supporting bar 42 away from the cable body 1 is connected to the reinforcing member 41.

[0029] It should be noted that the reinforcing member 41, the support bar 42 and the sheath layer 14 of the cable body 1 are integrally formed, so that the cable body 1 can provide better tensile strength and improve the torsion resistance of the cable as a whole. A plurality of cable bodies 1 are arranged on the outer side of the reinforcing member 41 in an array along the circumference of the reinforcing member 41.

[0030] Further, when two cable bodies 1 are provided, the cross section of the overall sheath layer 3 is elliptical.

[0031] Further, refer to Figure 3 When the cable body 1 is provided in three pieces, the cross section of the total sheath layer 3 is circular.

[0032] Further, refer to Figure 4 When the number of cable bodies 1 is four, the cross section of the total sheath layer 3 is a quadrilateral.

[0033] It should be noted that the inner conductor 11 may be composed of a single metal conductor or multiple metal conductors, and the inner conductor 11 may be a solid composite or hollow structure, and may be a smooth tubular or spiral structure.

[0034] The insulating layer 12 is made of polyolefin material and may be solid or foamed, or may be a skin-foam or skin-foam-skin structure.

[0035] The shielding layer can be a metal wire (tape) wound or woven structure, a smooth tube or spiral tube metal tube structure; or a metal tape or metal composite tape overlapped longitudinally wrapped structure.

[0036] The reinforcement member 41 may be a metal structure or a non-metal structure, and may be a material with a relatively high tensile strength, such as phosphated steel wire or RFP or Kevlar fiber.

[0037] The tear-resistant, torsion-resistant and tensile-resistant radio frequency coaxial cable product can be composed of a plurality of semi-finished products with a shielding structure, and a first tear rope 5 is evenly arranged between the sheath layer 14 and the shielding layer; the tear rope material is Kevlar fiber.

[0038] When the sheath layer 14 is extruded, a plurality of semi-finished cable bodies 1 with shielding layers are extruded with the sheath layer 14 at the same time.

[0039] While the sheath layer 14 is being extruded, another sheath layer 14 may also be extruded outside the reinforcement member 41 to protect the reinforcement member 41 .

[0040] When the sheath layer 14 is extruded, a support bar 42 is provided between the central metal reinforcement 41 and each cable body 1 for connecting the reinforcement 41 and each cable body 1 and realizing connection between each cable body 1. The width of the support bar 42 may be 0.2-0.5 mm.

[0041] The jacket layer 14 may be a polyolefin or a flame retardant polyolefin material.

[0042] After the sheath of each cable body 1 and the reinforcement 41 is extruded, one or two layers of the total shielding layer 2 structure can be made. The total shielding layer 2 can adopt a metal wire sparsely wound shielding braided shielding, a metal belt or composite belt wrapped (overlap) shielding, a smooth tubular structure or a spiral metal tubular structure.

[0043] After the overall shielding is completed, a general sheath layer 314 structure is extruded; when the general sheath is extruded, a second tear rope 15 is arranged between the overall shielding layer 2 and the overall sheath layer 314, and the material of the second tear rope 15 is Kevlar fiber.

[0044] The overall jacket layer 314 material may be polyolefin or flame retardant polyolefin material.

[0045] Working principle: It adopts multiple groups of parallel lines of multiple easy-to-tear, torsion-resistant and tensile-resistant RF coaxial cables, which can realize one-time wiring and realize single or multiple free and simple grouping; at the same time, there are reinforcing supports 4 between each multiple cable body 1, which can reduce the longitudinal tension of the cable itself and resist the tension; the first tear rope 5 and the second tear rope 15 are convenient for the peeling of the total sheath layer 3 and the sheath layer 14 respectively, so as to improve the construction efficiency. In addition, the total shielding structure is added to achieve self-signal shielding and shielding of external interference, so as to ensure the signal transmission of communication equipment. The reinforcing member 41 and the support bar 42 are integrally formed with the sheath layer 14 of the cable body 1, so they can provide the cable body 1 with better tensile resistance and improve the overall torsion resistance of the cable.

[0046] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A tearable, torsion-resistant and tensile-resistant radio frequency coaxial cable, characterized in that: The invention comprises a plurality of cable bodies (1), wherein the plurality of cable bodies (1) are provided with a common overall shielding layer (2) outside, the overall shielding layer (2) is provided with an overall sheath layer (3) outside, and a first tearing rope (5) is provided between the overall sheath layer (3) and the overall shielding layer (2).

2. The tearable, torsion-resistant and tensile-resistant radio frequency coaxial cable according to claim 1, characterized in that: A reinforcing support member (4) is provided between the plurality of cable bodies (1).

3. The tearable, torsion-resistant and tensile-resistant radio frequency coaxial cable according to claim 2, characterized in that: The reinforcing support member (4) comprises a reinforcing member (41) and a supporting strip (42); the number of the supporting strips (42) is the same as the number of the cable bodies (1); each supporting strip (42) is connected to a cable body (1); and one end of each supporting strip (42) away from the cable body (1) is connected to the reinforcing member (41).

4. The tearable, torsion-resistant and tensile-resistant radio frequency coaxial cable according to claim 3, characterized in that: The reinforcing member (41), the supporting strip (42) and the outer layer of the cable body (1) are integrally formed.

5. The tearable, torsion-resistant and tensile-resistant radio frequency coaxial cable according to claim 1, characterized in that: The cable body (1) comprises an inner conductor (11), an insulating layer (12), an outer conductor (13) and a sheath layer (14) which are arranged in sequence from the inside to the outside.

6. The tearable, torsion-resistant and tensile-resistant radio frequency coaxial cable according to claim 5, characterized in that: A second tear cord (15) is provided between the sheath layer (14) and the outer conductor (13).

7. The tearable, torsion-resistant and tensile-resistant radio frequency coaxial cable according to claim 3, characterized in that: The plurality of cable bodies (1) are arranged in an array along the circumference of the reinforcement member (41) on the outside of the reinforcement member (41).

8. The tearable, torsion-resistant and tensile-resistant radio frequency coaxial cable according to claim 1, characterized in that: When the cable bodies (1) are provided in two pieces, the cross section of the overall sheath layer (3) is elliptical.

9. The tearable, torsion-resistant and tensile-resistant radio frequency coaxial cable according to claim 1, characterized in that: When the number of the cable bodies (1) is three, the cross section of the overall sheath layer (3) is circular.

10. The tearable, torsion-resistant and tensile-resistant radio frequency coaxial cable according to claim 1, characterized in that: When the number of the cable bodies (1) is four, the cross section of the overall sheath layer (3) is a quadrilateral.

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