Safety type tensile resistant cable

Abstract

The utility model discloses a safe tensile resistance cable, including cable body, a plurality of groups of conductor around the center reinforcing core helical stranding distribution, the insulating layer is tightly covered in the outside of conductor, the tensile resistance core layer is evenly distributed around the outside of insulating layer, the anti -twist layer is covered in the outside of tensile resistance core layer, the outside of anti -twist layer is covered with shielding layer, the flame -retardant wear -resisting layer is covered in the outside of shielding layer, the utility model discloses can bear tensile force in cooperation with the tensile resistance core layer through center reinforcing core, avoid the fracture of the plurality of groups of conductor around the stranding, and the conductor can realize power transmission, and the insulating layer covers the conductor and can prevent electric leakage, and the anti -twist layer can resist torsional stress and prevent internal deformation, and the shielding layer can reduce electromagnetic interference and guarantee transmission stability, and the flame -retardant wear -resisting layer can prevent friction and fire, thereby can protect internal structure, and further through above -mentioned structure, can realize the stable transmission of cable under the safety protection and tensile resistance, anti -twist function.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, specifically to a safety-type tensile-resistant cable. Background Technology

[0002] As a multifunctional core carrier for power transmission, signal interaction, data connection, and control command transmission, cables are not only the "blood vessels" that ensure the continuous operation of equipment and support intelligent upgrading in the industrial production field, but also the "key link" that builds functional networks and maintains the operation of cities and society in the infrastructure construction field.

[0003] However, existing cables have significant drawbacks: weak tensile strength: most cables rely solely on the strength of the conductor itself or a single layer of armor, making them prone to conductor breakage and insulation cracking during tension, leading to power outages; poor torsional resistance: tension is often accompanied by torsion, and existing structures cannot simultaneously resist tensile and torsional stresses, accelerating cable aging and damage; insufficient safety protection: lacking efficient flame-retardant and wear-resistant structures, they are prone to short circuits and fires after tensile failure, and their insulation performance deteriorates rapidly after wear, posing a risk of electric shock; therefore, a safe tensile-resistant cable needs to be designed to solve these problems. Utility Model Content

[0004] The purpose of this invention is to provide a safe tensile-resistant cable to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a safety-type tensile-resistant cable, comprising a cable body, wherein the cable body comprises, from the inside out, a central reinforcing core, a conductor, an insulation layer, a tensile-resistant core layer, an anti-torsion layer, a shielding layer, and a flame-retardant and wear-resistant layer, wherein multiple sets of the conductors are spirally twisted around the central reinforcing core, the insulation layer tightly covers the outside of the conductors, the tensile-resistant core layers are uniformly distributed around the outside of the insulation layer, the anti-torsion layer covers the outside of the tensile-resistant core layer, the outside of the anti-torsion layer is covered by a shielding layer, and the flame-retardant and wear-resistant layer covers the outside of the shielding layer.

[0006] Preferably, the central reinforcing core is a single cylindrical structure made of high-strength polyester yarn.

[0007] Preferably, the insulating layer is made of weather-resistant cross-linked polyethylene, and a semi-conductive resistive water strip is provided between the inner wall of the insulating layer and the conductor.

[0008] Preferably, the tensile core layer is composed of multiple sets of aramid fiber bundles, which are arranged parallel to the cable axis and bonded to the insulation layer and the anti-torsion layer by nitrile rubber adhesive.

[0009] Preferably, the anti-torsion layer is a spirally wound galvanized steel wire layer.

[0010] Preferably, the shielding layer is a double-layer copper strip wrapping structure, with the inner layer being reverse-winding and the outer layer being forward-winding.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model uses a central reinforcing core and an anti-tensile core layer to work together to bear tensile force, preventing the breakage of multiple stranded conductors. The conductors can transmit electricity, the insulation layer covering the conductors can prevent leakage, the anti-torsion layer can resist torsional stress and prevent internal deformation, the shielding layer can reduce electromagnetic interference and ensure stable transmission, and the flame-retardant and wear-resistant layer can prevent friction and fire, thereby protecting the internal structure. Through the above structure, the cable can achieve stable transmission and anti-tensile and anti-torsion functions under safe protection. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a side sectional view of the present invention; Figure 3 This is a cross-sectional view of the end face of this utility model; Figure 4 for Figure 2 Enlarged view of part A in the image.

[0013] In the diagram: 1. Central reinforcing core, 2. Conductor, 3. Insulation layer, 4. Semiconductor resistive water tape, 5. Tensile core layer, 6. Torsion-resistant layer, 7. Shielding layer, 8. Flame-retardant and wear-resistant layer. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Example 1: Please refer to Figure 1-4 As shown, this utility model provides a safety tensile-resistant cable, including a cable body. The cable body includes, from the inside to the outside, a central reinforcing core 1, a conductor 2, an insulation layer 3, a tensile-resistant core layer 5, an anti-torsion layer 6, a shielding layer 7, and a flame-retardant and wear-resistant layer 8. Multiple sets of conductors 2 are spirally twisted around the central reinforcing core 1. The insulation layer 3 tightly covers the outside of the conductors 2. The tensile-resistant core layer 5 is evenly distributed around the outside of the insulation layer 3. The anti-torsion layer 6 covers the outside of the tensile-resistant core layer 5. The shielding layer 7 covers the outside of the anti-torsion layer 6. The flame-retardant and wear-resistant layer 8 covers the outside of the shielding layer 7.

[0016] Specifically, when this safety-type tensile cable is in operation, the central reinforcing core 1, as the core tensile-resistant basic component, works in conjunction with the tensile-resistant core layer 5, which is evenly distributed around the outside of the insulation layer 3, to bear external tensile forces. This prevents the multiple sets of conductors 2, which are spirally twisted around the central reinforcing core 1, from breaking due to direct force. At the same time, the conductors 2 can transmit electricity. The insulation layer 3, which tightly covers the outside of the conductors 2, can isolate the conductors 2 from the outside world and prevent leakage. The anti-torsion layer 6, which covers the outside of the tensile-resistant core layer 5, can resist the torsional stress generated during cable use and prevent internal structural deformation due to torsion. The shielding layer 7 outside the anti-torsion layer 6 can reduce external electromagnetic interference and ensure the transmission stability of the conductors 2. The outermost flame-retardant and wear-resistant layer 8 can resist external friction damage and flame attack and protect the internal structure. Thus, through the above structure, the cable can achieve stable transmission and tensile and torsional resistance under safety protection.

[0017] Among them, the central reinforcing core 1 is a single cylindrical structure, and the material is high-strength polyester yarn. The central reinforcing core 1 adopts a single cylindrical high-strength polyester yarn structure, which can not only rely on the high tensile strength of polyester yarn to cooperate with the tensile core layer 5 to bear the external tensile force to protect the conductor 2, but also, due to the single cylindrical design, the force is uniform, the material is light and soft and easy to process, thus taking into account both tensile strength and cable usage flexibility.

[0018] Among them, the insulation layer 3 is made of weather-resistant cross-linked polyethylene. A semi-conductive water-resistant strip 4 is provided between the inner wall of the insulation layer 3 and the conductor 2. The insulation layer 3 is made of weather-resistant cross-linked polyethylene, which can ensure long-term stable insulation and adapt to different environments. The semi-conductive water-resistant strip 4 between its inner wall and the conductor 2 can prevent moisture from seeping in. The dual design can prevent leakage and avoid the conductor 2 from getting damp and affecting transmission, which can ensure the insulation effect of the cable and the protection effect of the conductor.

[0019] The tensile core layer 5 is composed of multiple sets of aramid fiber bundles, which are arranged parallel to the cable axis and bonded to the insulation layer 3 and the anti-torsion layer 6 by nitrile rubber adhesive. The tensile core layer 5, composed of multiple sets of aramid fiber bundles arranged parallel to the cable axis, can efficiently bear tensile force by relying on the high tensile strength of aramid fibers. It can also be bonded to the insulation layer 3 and the anti-torsion layer 6 by nitrile rubber adhesive, which can avoid interlayer displacement and enhance structural synergy, thereby better protecting the conductor 2.

[0020] Among them, the anti-torsion layer 6 is a spirally wound galvanized steel wire layer. The anti-torsion layer 6 is a spirally wound galvanized steel wire layer, which can resist the torsional stress in the use of the cable with the high strength of the galvanized steel wire, and also evenly disperse the stress through the spiral winding structure, so as to prevent the internal tensile core layer 5, conductor 2 and other components from being damaged by torsion, thus ensuring the stability of the cable structure and the safety of transmission.

[0021] Among them, the shielding layer 7 is a double-layer copper strip wrapping structure, with the inner layer being reverse-winding and the outer layer being forward-winding. The shielding layer 7 adopts a double-layer copper strip wrapping structure with the inner layer being reverse-winding and the outer layer being forward-winding. This can reduce shielding gaps through bidirectional wrapping, significantly enhance the shielding effect against external electromagnetic interference, and at the same time prevent internal signals from leaking out, ensuring the stability of conductor 2 transmission.

[0022] Working principle: First, when this safety-type tensile cable is in operation, multiple sets of conductors 2, spirally twisted around the central reinforcing core 1, can achieve power transmission. During transmission, the central reinforcing core 1 and the tensile core layer 5 can work together to bear external tensile forces, preventing the conductors 2 from breaking directly under stress. At the same time, the weather-resistant cross-linked polyethylene insulation layer 3 tightly wraps the conductors 2 to isolate them from external leakage. The semi-conductive water-resistant tape 4 between its inner wall and the conductors 2 can prevent moisture from seeping in and prevent the conductors 2 from getting damp and affecting transmission. The anti-torsion layer 6, composed of spirally wound galvanized steel wire layers, can resist the torsional stress generated during cable use and evenly distribute the stress to prevent internal structural deformation. The double-layer copper tape shielding layer 7, with the inner layer in reverse and the outer layer in forward, can reduce external electromagnetic interference, prevent internal signal leakage, and ensure the transmission stability of the conductors 2. The outermost flame-retardant and wear-resistant layer 8 can resist external friction damage and flame attack, protecting the internal structure. Ultimately, the cable achieves stable power transmission and tensile and torsion resistance under safety protection, thus completing the entire operation process.

[0023] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0024] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A safety-type tensile-resistant cable, comprising a cable body, characterized in that: The cable body comprises, from the inside out, a central reinforcing core (1), a conductor (2), an insulation layer (3), a tensile core layer (5), an anti-torsion layer (6), a shielding layer (7), and a flame-retardant and wear-resistant layer (8). Multiple sets of conductors (2) are spirally twisted around the central reinforcing core (1). The insulation layer (3) tightly covers the outside of the conductor (2). The tensile core layer (5) is evenly distributed around the outside of the insulation layer (3). The anti-torsion layer (6) covers the outside of the tensile core layer (5). The shielding layer (7) covers the outside of the anti-torsion layer (6). The flame-retardant and wear-resistant layer (8) covers the outside of the shielding layer (7).

2. The safety-type tensile-resistant cable according to claim 1, characterized in that: The central reinforcing core (1) is a single cylindrical structure made of high-strength polyester yarn.

3. A safety-type tensile-resistant cable according to claim 2, characterized in that: The insulating layer (3) is made of weather-resistant cross-linked polyethylene, and a semi-conductive resistive water strip (4) is provided between the inner wall of the insulating layer (3) and the conductor (2).

4. A safety-type tensile-resistant cable according to claim 3, characterized in that: The tensile core layer (5) is composed of multiple sets of aramid fiber bundles, which are arranged parallel to the cable axis and are bonded and fixed to the insulation layer (3) and the anti-torsion layer (6) by nitrile rubber adhesive.

5. A safety-type tensile-resistant cable according to claim 4, characterized in that: The anti-torsion layer (6) is a spirally wound galvanized steel wire layer.

6. A safety-type tensile-resistant cable according to claim 5, characterized in that: The shielding layer (7) is a double-layer copper strip wrapping structure, with the inner layer being reverse wrapping and the outer layer being forward wrapping.

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