Multiple anti-torsion and anti-deformation double-core cable

Abstract

The utility model relates to the technical field of cables, in particular to a multi-torsion-resistant deformation-resistant double-core cable, which comprises a first cable and a second cable, an isolation framework is arranged between the first cable and the second cable, a first limiting framework is mounted on the surface, in contact with the first cable, of the isolation framework, the first limiting framework is sleeved outside the first cable, and a second limiting framework is mounted on the surface, in contact with the second cable, of the isolation framework. A second limiting framework is mounted on the surface, in contact with the second cable, of the isolation framework, and the second cable is sleeved with the second limiting framework; the second limiting framework is further sleeved with a third limiting framework, the isolation framework is externally provided with a first wrapping layer, the first wrapping layer is wound around the first limiting framework and the third limiting framework at the same time, and the second wrapping layer is externally sleeved with a compression-resistant layer, a first shielding layer, a second shielding layer, an insulating layer, an armor layer and a wear-resistant layer. According to the utility model, the plurality of layers of frameworks are arranged to wrap different cable cores respectively, so that the cable is prevented from deformation, and the structural integrity of the cable is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a multi-torsion and deformation-resistant double-core cable. Background Technique

[0002] A double-core cable is a cable structure with two conductors and is usually used in specific application scenarios, such as scenarios where power supplies with different uses need to be transmitted simultaneously. The two insulated conductors inside are separated from each other. At the same time, the two insulated conductors are also wrapped together with materials such as wrapping tapes and protected with insulating materials to ensure the roundness and compressive effect of the cable. Double-core cables can be used in various applications, such as low-voltage power transmission, communication systems, control circuits, etc. Since a double-core cable has two conductors, two currents or signals can be transmitted simultaneously, thus providing more flexibility and functions.

[0003] For example, Chinese Patent CN105810297A discloses a high-performance tensile and compressive double-core photovoltaic cable, which includes a cable core, an armor layer, and a sheath layer. The cable core is composed of two wire cores. An inner liner layer is arranged on the outer periphery of the cable core. The armor layer is wrapped on the outer periphery of the inner liner layer. The sheath layer is extruded on the outer periphery of the armor layer. The wire core includes a strengthening core, a conductor layer, and an insulating layer. The conductor layer is wrapped on the outer periphery of the strengthening core. The insulating layer is extruded on the outer periphery of the conductor layer. The above patent wraps multiple cable cores in multiple layers, improving the roundness and tensile and compressive effects of the multiple cable cores. However, since two relatively thick cables are wrapped into one cable, more fillers need to be filled between the two cables. The fillers will concentrate between the two cores inside the cable, resulting in different compressive effects at different angles on the double-core cable and affecting the overall anti-deformation and compressive effects of the cable.

[0004] Therefore, it is necessary for those skilled in the art to provide a multi-torsion and deformation-resistant double-core cable to prevent the uneven distribution of fillers inside the double-core cable and improve the overall compressive and anti-deformation capabilities of the cable. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a multi-torsion and deformation-resistant double-core cable to solve the technical problem that the uneven distribution of fillers inside the double-core cable in the prior art leads to low overall compressive and anti-deformation effects of the cable.

[0006] The technical solution adopted by the present utility model to solve its technical problems is as follows: A multi-torsion-resistant and deformation-resistant double-core cable includes a first cable and a second cable. An isolation skeleton is provided between the first cable and the second cable. A first limiting skeleton is installed on the surface of the isolation skeleton in contact with the first cable. The first limiting skeleton is sleeved outside the first cable. A second limiting skeleton is installed on the surface of the isolation skeleton in contact with the second cable. The second limiting skeleton is sleeved outside the second cable. A third limiting skeleton is further sleeved outside the second limiting skeleton. A first wrapping layer is provided outside the isolation skeleton. The first wrapping layer is wound around the outside of the first limiting skeleton and the third limiting skeleton at the same time. A pressure-resistant layer, a first shielding layer, a second shielding layer, an insulating layer, an armor layer, and a wear-resistant layer are respectively sleeved outside the second wrapping layer.

[0007] Further, the first limiting skeleton is in a U-shaped strip structure. The first cable is cooperatively connected in the groove of the first limiting skeleton. The end face of the first limiting skeleton is installed on the isolation skeleton.

[0008] Further, the second limiting skeleton is in a U-shaped strip structure. The second cable is cooperatively connected in the groove of the second limiting skeleton. The end face of the second limiting skeleton is installed on the isolation skeleton.

[0009] Further, the third limiting skeleton is in a U-shaped strip structure. The end face of the third limiting skeleton is installed on the isolation skeleton.

[0010] Further, a filler is filled between the first wrapping layer and the first limiting skeleton and the third limiting skeleton.

[0011] Further, the isolation skeleton, the first limiting skeleton, the second limiting skeleton, and the third limiting skeleton are made of polyvinyl chloride.

[0012] Further, the first cable and the second cable are made of stranded copper wires.

[0013] Further, a second wrapping layer is provided outside the first wrapping layer. The first wrapping layer and the second wrapping layer are made of wrapping tapes.

[0014] Further, the pressure-resistant layer, the insulating layer, the armor layer, and the wear-resistant layer are coaxially arranged.

[0015] The beneficial effects of the present utility model are as follows: The present utility model installs a first limiting skeleton and a second limiting skeleton on the first cable and the second cable respectively to provide separate protection for the first cable and the second cable. Then, a double-layer wrapping method is adopted to improve the structural strength and roundness of the double-core cable, improve the anti-deformation effect and use stability. The cable of the present utility model has fire prevention and high flame retardant properties. At the same time, multiple layers of skeletons are provided to wrap different cable cores respectively, preventing the cable from deforming due to uneven distribution of the two cores during use and ensuring the structural integrity of the cable. Brief Description of the Drawings

[0016] Figure 1 is the main cross-sectional view of the multiple torsion-resistant and deformation-resistant double-core cable of the present utility model.

[0017] The markings of each component in the drawings are as follows: 10, the first cable; 11, the second cable; 12, the first wrapping layer; 13, the second wrapping layer; 14, the compressive layer; 15, the first shielding layer; 16, the second shielding layer; 17, the insulating layer; 18, the armor layer; 19, the wear-resistant layer; 20, the isolation skeleton; 21, the first limiting skeleton; 22, the second limiting skeleton; 23, the third limiting skeleton. Detailed Description of the Preferred Embodiment

[0018] Now, the present utility model will be described in detail with reference to the drawings. This figure is a simplified schematic diagram, which only illustrates the basic structure of the present utility model in a schematic manner, so it only shows the components related to the present utility model.

[0019] Please refer to Figure 1 , the present utility model provides a multiple torsion-resistant and deformation-resistant double-core cable, including a first cable 10 and a second cable 11. The first cable 10 and the second cable 11 are made of stranded copper wires. A rubber insulating layer (not shown in the figure) is wrapped outside the integrally stranded cable core 10 to provide insulation effect, and the insulating layer 11 is made of polyethylene.

[0020] Furthermore, an isolation skeleton 20 is provided between the first cable 10 and the second cable 11. The isolation skeleton 20 is made of polyvinyl chloride to separate the first cable 10 and the second cable 11, ensure that there is no interference between the first cable 10 and the second cable 11, and improve the use stability.

[0021] A first limiting skeleton 21 is installed on the surface of the isolation skeleton 20 in contact with the first cable 10. The first limiting skeleton 21 is sleeved outside the first cable 10. The first limiting skeleton 21 has a U-shaped strip structure. The first cable 10 is cooperatively connected in the groove of the first limiting skeleton 21, and the end face of the first limiting skeleton 21 is installed on the isolation skeleton 20.

[0022] A second limiting skeleton 22 is installed on the surface of the isolation skeleton 20 in contact with the second cable 11. The second limiting skeleton 22 is sleeved outside the second cable 11. The second limiting skeleton 22 has a U-shaped strip structure. The second cable 11 is cooperatively connected in the groove of the second limiting skeleton 22, and the end face of the second limiting skeleton 22 is installed on the isolation skeleton 20.

[0023] In the present utility model, a first limiting framework 21 and a second limiting framework 22 are respectively installed on a first cable 10 and a second cable 11 to provide separate protection for the first cable 10 and the second cable 11, and at the same time facilitate the accurate installation of the first cable 10 and the second cable 11 at the correct positions on the isolation framework 20, improving the overall stability of the first cable 10 and the second cable 11.

[0024] A third limiting framework 23 is also sleeved outside the second limiting framework 22. The third limiting framework 23 is in a U-shaped strip structure, and the end face of the third limiting framework 23 is installed on the isolation framework 20. Since the diameters of the first cable 10 and the second cable 11 are different, by adding the third limiting framework 23 to the cable with a smaller diameter, the diameter on one side of the second cable 11 is increased, thereby ensuring the overall roundness of the first cable 10 and the second cable 11. At the same time, in the present utility model, multiple layers of frameworks are provided to respectively wrap different cable cores, preventing the cable from deforming during use due to uneven distribution of the two cores, and thus ensuring the structural integrity of the cable. When the cable is subjected to torsion along the axial direction, the first limiting framework 21, the second limiting framework 22, and the third limiting framework 23 will deflect torsionally around the axis of the cable, and then the torsion forces received by the first limiting framework 21, the second limiting framework 22, and the third limiting framework 23 are concentrated and transmitted to the isolation framework 20. The isolation framework 20 arranged along the axis of the cable can absorb most of the torsion force, preventing the torsion force from being transmitted to the first cable 10 or the second cable 11, and thus achieving anti-torsion and ensuring the use stability of the present utility model.

[0025] A first wrapping layer 12 is provided outside the isolation framework 20. The first wrapping layer 12 simultaneously winds around the outside of the first limiting framework 21 and the third limiting framework 23. A filler (not shown in the figure) is also filled between the first wrapping layer 12 and the first limiting framework 21 and the third limiting framework 23 to ensure the overall roundness of the cable and the anti-deformation effect. The filler includes but is not limited to a filling rope. In the present utility model, the first wrapping layer 12 is used to wrap the isolation framework 20, the first limiting framework 21, the second limiting framework 22, and the third limiting framework 23 together to ensure roundness and complete the preliminary wrapping. The first limiting framework 21, the second limiting framework 22, and the third limiting framework 23 are made of polyvinyl chloride.

[0026] A second wrapping layer 13 is provided outside the first wrapping layer 12. The first wrapping layer 12 and the second wrapping layer 13 are made of wrapping tapes. In the present utility model, the double-layer wrapping method is adopted to improve the structural strength and roundness of the two-core cable, improve the anti-deformation effect, facilitate the subsequent processes, and improve the use stability of the cable.

[0027] Further, a compressive layer 14, a first shielding layer 15, a second shielding layer 16, an insulating layer 17, an armor layer 18, and a wear-resistant layer 19 are respectively sleeved outside the second wrapping layer 13.

[0028] The compression resistance layer 14 is made of rubber, which is used to improve the compression resistance performance of the cable and protect the isolation skeleton 20, the first limiting skeleton 21, the second limiting skeleton 22, and the third limiting skeleton 23 wound inside the first wrapping layer 12, preventing the internal structure from being damaged by pressure. The first shielding layer 15 and the second shielding layer 16 are made of tinned copper braiding, which is used to ensure the transmission performance of the system in an electromagnetic interference environment; the insulating layer 17 is made of rubber, which is used to further improve the insulation effect of the cable; the armor layer 18 is made of steel sheets, which improves the anti-deformation effect of the cable. The wear-resistant layer 19 is extruded from low-smoke and halogen-free polyolefin. Preferably, the compression resistance layer 14, the insulating layer 17, the armor layer 18, and the wear-resistant layer 19 are coaxially arranged.

[0029] During use, by the cooperation of the armor layer 18 and the wear-resistant layer 19, the utility model has better compression resistance, impact resistance, fire resistance, and wear resistance effects, improving the convenience of use. At the same time, the wear-resistant layer 19 is a low-smoke and halogen-free polyolefin protective sleeve, which prevents the generation of harmful gases during combustion and improves the environmental protection level of the utility model.

[0030] The utility model provides a multi-torsion-resistant and anti-deformation double-core cable, which has fire resistance and high flame retardancy performance. At the same time, multiple layers of skeletons are provided to wrap different cable cores respectively, preventing the cable from deforming due to uneven distribution of the two cores during use and ensuring the integrity of the cable structure.

[0031] It can be understood that the utility model is described through some embodiments. Those skilled in the art know that without departing from the spirit and scope of the utility model, various changes or equivalent replacements can be made to these features and embodiments. In addition, under the teaching of the utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the utility model.

Claims

1. A multi-torsion and anti-deformation dual-core cable, comprising a first cable (10) and a second cable (11), characterized in that, An isolation skeleton (20) is provided between the first cable (10) and the second cable (11). A first limiting skeleton (21) is installed on the surface of the isolation skeleton (20) in contact with the first cable (10). The first limiting skeleton (21) is sleeved outside the first cable (10). A second limiting skeleton (22) is installed on the surface of the isolation skeleton (20) in contact with the second cable (11). The second limiting skeleton (22) is sleeved outside the second cable (11). A third limiting skeleton (23) is further sleeved outside the second limiting skeleton (22). A first wrapping layer (12) is provided outside the isolation skeleton (20). The first wrapping layer (12) simultaneously winds around the outside of the first limiting skeleton (21) and the third limiting skeleton (23). A second wrapping layer (13) is provided outside the first wrapping layer (12). A compressive layer (14), a first shielding layer (15), a second shielding layer (16), an insulating layer (17), an armor layer (18), and a wear-resistant layer (19) are respectively sleeved outside the second wrapping layer (13).

2. The multi-torsion and anti-deformation double-core cable according to claim 1, characterized in that, The first limiting skeleton (21) is in a U-shaped strip structure. The first cable (10) is cooperatively connected in the groove of the first limiting skeleton (21). The end face of the first limiting skeleton (21) is installed on the isolation skeleton (20).

3. The multi-torsion and anti-deformation double-core cable according to claim 2, wherein The second limiting skeleton (22) is in a U-shaped strip structure. The second cable (11) is cooperatively connected in the groove of the second limiting skeleton (22). The end face of the second limiting skeleton (22) is installed on the isolation skeleton (20).

4. The multi-torsion and deformation-resistant double-core cable according to claim 3, characterized in that, The third limiting skeleton (23) is in a U-shaped strip structure. The end face of the third limiting skeleton (23) is installed on the isolation skeleton (20).

5. The multi-torsion and anti-deformation double-core cable according to claim 1, characterized in that, Fillers are also filled between the first wrapping layer (12) and the first limiting skeleton (21) and the third limiting skeleton (23).

6. The multi-torsion and anti-deformation double-core cable according to claim 5, characterized in that The isolation skeleton (20), the first limiting skeleton (21), the second limiting skeleton (22), and the third limiting skeleton (23) are made of polyvinyl chloride.

7. The multi-torsion and anti-deformation double-core cable according to claim 1, wherein, The first cable (10) and the second cable (11) are made of stranded copper wires.

8. The multi-torsion and deformation-resistant double-core cable according to claim 1, characterized in that, A second wrapping layer (13) is provided outside the first wrapping layer (12). The first wrapping layer (12) and the second wrapping layer (13) are made of wrapping tapes.

9. The multi-torsion and anti-deformation double-core cable according to claim 1, characterized in that, The compressive layer (14), the insulating layer (17), the armor layer (18), and the wear-resistant layer (19) are coaxially arranged.

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