Anti-torsion cable

Abstract

The utility model discloses an anti-torsion cable, which belongs to the technical field of power cables and comprises a supporting layer, a plurality of first cable cores are uniformly distributed in the supporting layer, a fixing layer is arranged on the outer wall of the supporting layer, an insulating protective layer is arranged on the outer wall of the fixing layer, and a plurality of second cable cores are arranged on the outer wall of the insulating protective layer. A shielding layer is arranged between the outer wall of the fixing layer and the inner wall of the insulating protection layer, and the number of the first cable cores located in the supporting layer is larger than the number of the second cable cores located outside the supporting layer, so that the gravity center of the cable is located in the center of the interior of the supporting layer. The plurality of first cable wire cores in the supporting layer are more stable through the isolation filler, the gravity center of the cable is not easy to shift, the structure of the cable is more stable through the triangular structure of the supporting layer, the stress distribution of the cable is more uniform, the anti-bending effect of the cable is better, and the cable has the characteristics of high torsion resistance and good anti-bending effect.

Description

Technical Field

[0001] The utility model relates to the technical field of power cables, in particular to a torsion-resistant cable. Background Art

[0002] Cables are usually made of several or several groups of wires twisted together to form a rope-like cable. Each group of wires is insulated from each other and often twisted around a center. The entire cable is covered with a highly insulating covering. They are often erected in the air for telecommunications or power transmission. However, during use, cables are often twisted and cannot recover in time after deformation. In the long run, they will cause internal damage to the cables, thereby reducing the service life of the cables.

[0003] When existing cables are frequently twisted, the covering layer itself is prone to squeezing and wrinkling due to frequent deformation. In severe cases, the wrinkled part will rupture, and the cable's torsion resistance is poor, which greatly reduces the service life of the cable. In addition, the existing cables have poor anti-bending effect, and the internal wires of the cable are easily damaged due to bending during construction. Summary of the invention

[0004] In order to solve the problems in the above background, the utility model provides a torsion-resistant cable, which has the characteristics of strong torsion resistance and good anti-bending effect.

[0005] The utility model is implemented as follows: a torsion-resistant cable comprises a supporting layer, a plurality of first cable cores evenly distributed are arranged inside the supporting layer, a fixing layer is arranged on the outer wall of the supporting layer, an insulating protective layer is arranged on the outer wall of the fixing layer, and a shielding layer is arranged between the outer wall of the fixing layer and the inner wall of the insulating protective layer;

[0006] Three anti-torsion mechanisms are installed between the outer wall of the supporting layer and the inner wall of the fixed layer. The anti-torsion mechanism includes an anti-torsion layer fixedly connected to the outer wall of the supporting layer, a second cable core is fixedly connected inside the anti-torsion layer, and anti-torsion tubes symmetrically distributed on both sides of the second cable core are fixedly connected inside the anti-torsion layer.

[0007] In order to make the center of gravity of the cable located at the inner center of the supporting layer, as a preferred torsion-resistant cable of the utility model, the first cable core has the same structure as the second cable core, and the number of the first cable core is greater than the number of the second cable core.

[0008] In order to achieve a better anti-bending effect on the cable, as a preferred anti-torsion cable of the utility model, the support layer is configured as a triangular structure.

[0009] In order to achieve better insulation effect between the wires, as a preferred anti-twist cable of the present invention, the outer walls of the plurality of the first cable cores and the second cable cores are all wrapped with insulating sheaths.

[0010] In order to make the anti-torsion mechanism more lightweight, as a preferred anti-torsion cable of the utility model, the anti-torsion tube is made of lightweight polypropylene plastic and has a hollow structure.

[0011] In order to maintain stability between the cable cores, as a preferred anti-torsion cable of the utility model, the interior of the support layer is provided with an isolation filler located between the plurality of first cable cores.

[0012] In order to achieve a better protective effect of the insulating protective layer, as a preferred anti-twist cable of the utility model, the outer wall of the insulating protective layer is coated with a protective coating.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model makes the center of gravity of the cable located at the inner center of the supporting layer by making the number of the first cable cores located inside the supporting layer greater than the number of the second cable cores located outside the supporting layer, and makes the multiple cable cores inside the supporting layer more stable by means of isolating fillers, so that the center of gravity of the cable is not easily shifted, and makes the structure of the cable more stable by means of the triangular structure of the supporting layer, so that the force distribution of the cable is more uniform, and the anti-bending effect of the cable is better.

[0015] In addition, the utility model has three anti-torsion mechanisms, and the three anti-torsion mechanisms are in close contact with the three outer walls of the supporting layer respectively. When the cable is twisted, the supporting layer generates supporting force for the three anti-torsion mechanisms. At the same time, the anti-torsion tube inside the anti-torsion layer also provides supporting force for the cable, making the anti-torsion mechanism more resistant to torsion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an overall structural diagram of a torsion-resistant cable of the utility model;

[0017] Figure 2 It is the overall cutaway structural diagram of the utility model;

[0018] Figure 3 It is a partial cutaway structural diagram of the utility model.

[0019] In the figure, 1, supporting layer; 2, first cable core; 3, insulating outer skin; 4, isolating filler; 5, fixing layer; 6, anti-torsion layer; 7, anti-torsion tube; 8, insulating protective layer; 9, shielding layer; 10, protective coating; 11, second cable core. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0021] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying 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, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0022] See also Figure 1-3 , a torsion-resistant cable, comprising a supporting layer 1, a plurality of evenly distributed first cable cores 2 are arranged inside the supporting layer 1, a fixing layer 5 is arranged on the outer wall of the supporting layer 1, an insulating protective layer 8 is arranged on the outer wall of the fixing layer 5, and a shielding layer 9 is arranged between the outer wall of the fixing layer 5 and the inner wall of the insulating protective layer 8;

[0023] Three anti-torsion mechanisms are installed between the outer wall of the supporting layer 1 and the inner wall of the fixing layer 5, and the anti-torsion mechanism includes an anti-torsion layer 6 fixedly connected to the outer wall of the supporting layer 1, a second cable core 11 is fixedly connected inside the anti-torsion layer 6, and anti-torsion tubes 7 symmetrically distributed on both sides of the second cable core 11 are fixedly connected inside the anti-torsion layer 6.

[0024] In this embodiment: by making the number of the first cable cores 2 located inside the supporting layer 1 greater than the number of the second cable cores 11 located outside the supporting layer 1, the center of gravity of the cable is located inside the supporting layer 1, so that the force distribution of the cable is more uniform, the structure of the cable is more stable, and the anti-bending effect of the cable is better through the supporting layer 1. At the same time, the shielding layer 9 can effectively reduce the interference of the outside world on the cable;

[0025] Through the three anti-torsion mechanisms, the three anti-torsion mechanisms are in close contact with the three outer walls of the support layer 1 respectively. When the cable is twisted, the support layer 1 generates supporting force for the three anti-torsion mechanisms. At the same time, the anti-torsion tube 7 inside the anti-torsion layer 6 also provides supporting force for the cable, making the anti-torsion mechanism more resistant to torsion.

[0026] As a technical optimization solution of the present utility model, the first cable cores 2 and the second cable cores 11 have the same structure, and the number of the first cable cores 2 is greater than the number of the second cable cores 11 .

[0027] In this embodiment: by making the number of first cable cores 2 greater than the number of second cable cores 11, the number of cores inside the support layer 1 is greater than that outside, so that the center of gravity of the cable is located at the inner center of the support layer 1, making the structure of the cable more stable.

[0028] As a technical optimization solution of the present invention, the support layer 1 is configured as a triangular structure.

[0029] In this embodiment, the triangular structure is designed to make the support layer 1 more stable, provide stronger support for the cable, and improve the anti-bending effect of the cable.

[0030] As a technical optimization solution of the present invention, the outer walls of the plurality of first cable cores 2 and the second cable cores 11 are all wrapped with an insulating sheath 3 .

[0031] In this embodiment: the plurality of first cable cores 2 are isolated from each other by the insulating sheath 3 to prevent leakage of current in the conductors, thereby making the cable safer and more reliable.

[0032] As a technical optimization solution of the present invention, the anti-torsion tube 7 is made of lightweight polypropylene plastic, and the anti-torsion tube 7 is a hollow structure.

[0033] In this embodiment: through the hollow structural design of the anti-torsion tube 7 and the use of lightweight polypropylene plastic as the material of the anti-torsion tube 7, the weight of the anti-torsion mechanism is made lighter, the center of gravity of the cable is more easily located at the internal center of gravity of the support layer 1, and the structure of the cable is made more stable.

[0034] As a technical optimization solution of the present invention, an isolation filler 4 located between the plurality of first cable cores 2 is provided inside the support layer 1 .

[0035] In this embodiment: the multiple first cable cores 2 inside the supporting layer 1 are made more stable by the isolation filler 4, so that the center of gravity of the cable is not easily shifted and is more stable.

[0036] As a technical optimization solution of the present invention, the outer wall of the insulating protective layer 8 is coated with a protective coating 10 .

[0037] In this embodiment: the protective coating 10 makes the corrosion resistance of the insulating protective layer 8 stronger, slows down the aging speed of the cable, and increases the service life of the cable.

[0038] The working principle and use process of the utility model: the multiple first cable cores 2 are isolated by the insulating sheath 3 to prevent the current in the wire from leaking, and the shielding layer 9 reduces the interference of the outside world to the cable, making the cable safer and more reliable;

[0039] The number of the first cable cores 2 located inside the supporting layer 1 is greater than the number of the second cable cores 11 located outside the supporting layer 1, so that the center of gravity of the cable is located at the inner center of the supporting layer 1. The multiple first cable cores 2 inside the supporting layer 1 are made more stable by the isolation filler 4, so that the center of gravity of the cable is not easily shifted. The triangular structure of the supporting layer 1 makes the structure of the cable more stable, the force distribution of the cable more uniform, and the anti-bending effect of the cable better.

[0040] Through the three anti-torsion mechanisms, the three anti-torsion mechanisms are in close contact with the three outer walls of the support layer 1 respectively. When the cable is twisted, the support layer 1 generates supporting force for the three anti-torsion mechanisms. At the same time, the anti-torsion tube 7 inside the anti-torsion layer 6 also provides supporting force for the cable, making the anti-torsion mechanism more resistant to torsion.

[0041] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A torsion-resistant cable, comprising a support layer (1), characterized in that: A plurality of evenly distributed first cable cores (2) are arranged inside the support layer (1), a fixing layer (5) is arranged on the outer wall of the support layer (1), an insulating protective layer (8) is arranged on the outer wall of the fixing layer (5), and a shielding layer (9) is arranged between the outer wall of the fixing layer (5) and the inner wall of the insulating protective layer (8); Three anti-torsion mechanisms are installed between the outer wall of the support layer (1) and the inner wall of the fixed layer (5), the anti-torsion mechanism comprising an anti-torsion layer (6) fixedly connected to the outer wall of the support layer (1), a second cable core (11) fixedly connected inside the anti-torsion layer (6), and anti-torsion tubes (7) symmetrically distributed on both sides of the second cable core (11) fixedly connected inside the anti-torsion layer (6); The first cable core (2) and the second cable core (11) have the same structure, and the number of the first cable cores (2) is greater than the number of the second cable cores (11); the support layer (1) is arranged in a triangular structure; and an isolation filler (4) located between the plurality of first cable cores (2) is arranged inside the support layer (1).

2. The torsion-resistant cable according to claim 1, characterized in that: The outer walls of the plurality of first cable cores (2) and second cable cores (11) are all wrapped with insulating sheaths (3).

3. The torsion-resistant cable according to claim 1, characterized in that: The anti-torsion tube (7) is made of lightweight polypropylene plastic, and the anti-torsion tube (7) is a hollow structure.

4. The torsion-resistant cable according to claim 1, characterized in that: The outer wall of the insulating protective layer (8) is coated with a protective coating (10).

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