Fatigue-resistant cable

Abstract

The utility model discloses an anti-fatigue cable, which relates to the cable manufacturing field and comprises an insulating layer, a plurality of core sleeves are fixedly connected in the insulating layer, cable cores are fixedly connected in the core sleeves, the outer sides of the core sleeves and the inner side of the insulating layer are fixedly connected with filling layers, and the filling layers are fixedly connected with the outer sides of the core sleeves and the inner side of the insulating layer. And the outer side of the filling layer is fixedly connected with a first composite layer. By adopting the structure, the polypropylene material is low in energy consumption in the production process and can be recycled after being decommissioned, the influence on the environment is further reduced, and the polypropylene-based environment-friendly cable insulating material is low in energy consumption in the production process, so that energy consumption and carbon emission are favorably reduced, and the current green and environment-friendly requirements are met; due to the characteristics of excellent insulating property and no need of crosslinking of polypropylene, the processing technology is relatively simple, so that the production efficiency is improved, and the energy and resource consumption in the production process is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of cable manufacturing, and particularly relates to a fatigue-resistant cable. Background Art

[0002] Cables are a general term for items such as optical cables and wires. Cables have many uses, mainly for controlling installations, connecting devices, transmitting electricity, etc., and are a common and indispensable thing in daily life. Since cables are electrified, installation needs to be particularly cautious. The main processes of electric wires and cables are: drawing, stranding, and coating. The more complex the model specifications, the higher the repeatability.

[0003] According to the Chinese patent with the publication number "CN211929144U", a fatigue-resistant communication cable is disclosed, including a core conductor. An inner sheath is arranged on the outer surface of the core conductor. The inner sheath includes a PE soft insulation layer. A polyester tape is arranged on the side of the inner sheath away from the core conductor. A protective layer is arranged on the side of the polyester tape away from the inner sheath. An outer sheath is arranged on the side of the protective layer away from the polyester tape. The outer sheath includes an aramid fiber layer. A special nitrile composite material layer is arranged on the side of the aramid fiber layer away from the outer sheath. A polyethylene sheath is arranged on the side of the special nitrile composite material layer away from the aramid fiber layer. The utility model achieves the advantage of good fatigue resistance through the mutual cooperation of the core conductor, inner sheath, polyester tape, protective layer, and outer sheath, does not affect the use effect of the communication cable, can meet the needs of users, and extends the service life of the communication cable;

[0004] Through the above structure, it can be seen that the utility model achieves the advantage of good fatigue resistance through the mutual cooperation of the core conductor, inner sheath, polyester tape, protective layer, and outer sheath, does not affect the use effect of the communication cable, can meet the needs of users, and extends the service life of the communication cable. However, although the PE soft insulation layer used in this cable has good insulation performance and low-temperature resistance, its mechanical strength is low and it is prone to cracking under environmental stress. In addition, the service life of PE is relatively short, which limits its application in high-temperature environments. The PE cable insulation material consumes a large amount of energy and is not recyclable during the production process, which seriously restricts its sustainable development. At the same time, some voids will be generated in the core during the cabling process. If these voids are not densely filled with filling materials, it will cause the cable core to be unstable, thereby reducing the service life of the cable. Summary of the Utility Model

[0005] Aiming at the problems mentioned in the background art, the purpose of the utility model is to provide a fatigue-resistant cable to solve the problems raised in the background art.

[0006] The above technical objectives of the present utility model are achieved through the following technical solutions:

[0007] A fatigue-resistant cable, an insulating layer, a core sleeve is fixedly connected inside the insulating layer, there are multiple core sleeves, a cable core is fixedly connected inside the core sleeve, a filling layer is fixedly connected to the outer side of the core sleeve and the inner side of the insulating layer, a first composite layer is fixedly connected to the outer side of the filling layer, an outer protective layer is fixedly connected to the outer side of the first composite layer, the outer protective layer includes a reinforcing layer arranged on the outer side of the first composite layer, and a wrapping layer is fixedly connected to the outer side of the reinforcing layer.

[0008] As a preferred technical solution, the first composite layer includes an anti-interference layer, a reinforcing layer is fixedly connected to the outer side of the anti-interference layer, the anti-interference layer is fixedly connected to the outer side of the insulating layer, and the reinforcing layer is located inside the outer protective layer.

[0009] As a preferred technical solution, the reinforcing layer is arranged as a steel wire structure layer, the anti-interference layer is arranged as an aluminum foil paper winding layer, the thickness of the anti-interference layer is 0.05 mm - 0.15 mm, and the diameter of the reinforcing layer is 0.2 mm - 0.4 mm.

[0010] As a preferred technical solution, the reinforcing layer includes vertical steel wires arranged on the outer side of the anti-interference layer, a steel wire ring is fixedly connected to the inner side of the vertical steel wires, the steel wire ring is also located on the outer side of the anti-interference layer, and the outer sides of the vertical steel wires and the steel wire ring are located inside the outer protective layer.

[0011] As a preferred technical solution, the reinforcing layer includes a first braided wire and a second braided wire arranged on the outer side of the first composite layer, both the first braided wire and the second braided wire are arranged as nylon braided wires, and the first braided wire and the second braided wire are wound around the outer side of the first composite layer through a braiding process.

[0012] As a preferred technical solution, the wrapping layer is arranged as a rubber layer, the diameter of the reinforcing layer is also 0.2 mm - 0.4 mm, and the thickness of the wrapping layer is 0.3 mm - 0.5 mm.

[0013] As a preferred technical solution, the insulating layer is arranged as a polypropylene layer, the filling layer is arranged as a glass fiber filament layer, and the thickness of the insulating layer is 0.4 mm - 0.6 mm.

[0014] In summary, the present utility model mainly has the following beneficial effects:

[0015] First, through the provided insulating layer, which is a polypropylene insulating layer, polypropylene is a thermoplastic that can be melted and reused. This significantly reduces waste generation and disposal costs. Compared with traditional polyethylene cable insulation materials, polypropylene consumes less energy during production and can be recycled after retirement, further reducing the environmental impact. The production process of polypropylene-based environmentally friendly cable insulation materials consumes less energy, which helps reduce energy consumption and carbon emissions, meeting current green environmental protection requirements. Due to the excellent insulating properties and the characteristic of not requiring cross-linking of polypropylene, its processing technology is relatively simple, which not only improves production efficiency but also reduces energy and resource consumption during the production process;

[0016] Second, through the provided filling layer, which is a glass fiber filament layer, the glass fiber filament layer can effectively fill the gaps between the cable cores, making the outer diameter of the cable after stranding more round. This not only facilitates the operations of taping and extruding the sheath but also improves the overall aesthetics and performance of the cable. The filling layer can also increase the flexibility of the cable, so that when it is bent, the stress will not concentrate at a certain place, thus avoiding plastic deformation caused by excessive stress. Moreover, the filling layer can enhance the tensile strength and anti-sway performance of the cable, making the cable not easily loose or deformed when subjected to external forces. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a structural schematic diagram of the present utility model;

[0018] Figure 2 is a structural schematic diagram of the layer structure of the present utility model;

[0019] Figure 3 is a structural schematic diagram of the reinforcing layer of the present utility model;

[0020] Figure 4 is a structural schematic diagram of the reinforcing layer of the present utility model.

[0021] Reference numerals: 1, cable core; 2, core sleeve; 3, insulating layer; 4, filling layer; 5, first composite layer; 51, anti-interference layer; 52, reinforcing layer; 521, vertical steel wire; 522, steel wire ring; 6, outer protective layer; 61, reinforcing layer; 611, first braided wire; 623, second braided wire; 62, wrapping layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Embodiment

[0023] Reference Figures 1 to 4, A fatigue-resistant cable of this embodiment, an insulating layer 3, an inner core sleeve 2 is fixedly connected inside the insulating layer 3, there are multiple core sleeves 2, a cable core 1 is fixedly connected inside the core sleeve 2, a filling layer 4 is fixedly connected to the outer side of the core sleeve 2 and the inner side of the insulating layer 3, a first composite layer 5 is fixedly connected to the outer side of the filling layer 4, an outer protective layer 6 is fixedly connected to the outer side of the first composite layer 5. The outer protective layer 6 includes a reinforcing layer 61 arranged on the outer side of the first composite layer 5, and a wrapping layer 62 is fixedly connected to the outer side of the reinforcing layer 61. The insulating layer 3 is set as a polypropylene layer, the filling layer 4 is set as a glass fiber filament layer, and the thickness of the insulating layer 3 is 0.4 mm - 0.6 mm.

[0024] Reference Figures 1 - 3 , The first composite layer 5 includes an anti-interference layer 51, a reinforcing layer 52 is fixedly connected to the outer side of the anti-interference layer 51. The anti-interference layer 51 is fixedly connected to the outer side of the insulating layer 3, and the reinforcing layer 52 is located inside the outer protective layer 6. The reinforcing layer 52 is set as a steel wire structure layer, the anti-interference layer 51 is set as an aluminum foil paper winding layer, the thickness of the anti-interference layer 51 is 0.05 mm - 0.15 mm, the diameter of the reinforcing layer 52 is 0.2 mm - 0.4 mm. The reinforcing layer 52 includes vertical steel wires 521 arranged on the outer side of the anti-interference layer 51, and a steel wire ring 522 is fixedly connected to the inner side of the vertical steel wires 521. The steel wire ring 522 is also located on the outer side of the anti-interference layer 51. The outer sides of the vertical steel wires 521 and the steel wire ring 522 are all located inside the outer protective layer 6; The anti-interference layer 51 is an aluminum foil paper winding layer, and its main function is to reduce the influence of external interference on the cable. In addition, it also plays a certain heat insulation role to prevent the cable from overheating in a high-temperature environment. The aluminum foil paper winding layer can enhance the overall mechanical strength of the cable and protect the conductor from physical damage and chemical erosion. This protective effect is crucial for ensuring the reliability and durability of the cable in various environments. As a metal shielding material, the aluminum foil paper winding layer can effectively isolate the electric field and electromagnetic interference, thereby improving the electrical performance and stability of the cable. And by setting the reinforcing layer 52, the strength of the cable can be increased, so that when the cable encounters the impact of sharp objects, it will not cause damage to the internal cable core 1, thereby increasing the service life of the cable, and when adding the steel wire structure layer, the overall strength is improved.

[0025] Reference Figure 3 and Figure 4, the reinforcing layer 61 includes a first braided wire 611 and a second braided wire 623 disposed outside the first composite layer 5. Both the first braided wire 611 and the second braided wire 623 are nylon braided wires. The first braided wire 611 and the second braided wire 623 are wound around the outside of the first composite layer 5 through a braiding process. The wrapping layer 62 is a rubber layer. The diameter of the reinforcing layer 61 is also 0.2 mm - 0.4 mm, and the thickness of the wrapping layer 62 is 0.3 mm - 0.5 mm; the reinforcing layer 61 is a nylon braided wire, and the nylon braided wire has relatively high tensile and compressive strengths, even higher than the tensile strength of metal. The nylon braided wire material is stronger, more wear-resistant, not easily bent or coiled than the rubber wire material. This makes the cable made of nylon braided wire more durable and convenient in daily use. The nylon braided wire cable has the characteristics of a small outer diameter and light weight, which can improve the safety and applicability during laying, and the nylon braided wire has the characteristic of high temperature resistance.

[0026] Principle of use and advantages: Through the set outer protective layer 6, the reinforcing layer 61 is a nylon braided wire, and the nylon braided wire has relatively high tensile and compressive strengths, even higher than the tensile strength of metal. The nylon braided wire material is stronger, more wear-resistant, not easily bent or coiled than the rubber wire material. This makes the cable made of nylon braided wire more durable and convenient in daily use. The nylon braided wire cable has the characteristics of a small outer diameter and light weight, which can improve the safety and applicability during laying. The nylon braided wire has good high temperature resistance performance, and the long-term use temperature can reach 90°C - 125°C. In addition, nylon also has excellent chemical resistance and formic acid corrosion resistance, and has a mature application in the field of cable anti-ants. Under the action of the first composite layer 5, the anti-interference layer 51 is an aluminum foil paper winding layer, and its main function is to reduce the influence of external interference on the cable. In addition, it also plays a certain heat insulation role to prevent the cable from overheating in a high temperature environment. The aluminum foil paper winding layer can enhance the overall mechanical strength of the cable and protect the conductor from physical damage and chemical erosion. This protective effect is crucial for ensuring the reliability and durability of the cable in various environments. As a metal shielding material, the aluminum foil paper winding layer can effectively isolate the electric field and electromagnetic interference, thereby improving the electrical performance and stability of the cable. And by setting the reinforcing layer 52, the strength of the cable can be increased, so that when the cable encounters the impact of sharp objects, the internal cable core 1 will not be damaged.

Claims

1. A fatigue-resistant cable, characterized in that: It includes an insulating layer (3), inside which a core sleeve (2) is fixedly connected. There are multiple core sleeves (2). Inside the core sleeve (2), a cable core (1) is fixedly connected. On the outer side of the core sleeve (2) and the inner side of the insulating layer (3), a filling layer (4) is fixedly connected. On the outer side of the filling layer (4), a first composite layer (5) is fixedly connected. On the outer side of the first composite layer (5), an outer protective layer (6) is fixedly connected. The outer protective layer (6) includes a reinforcing layer (61) arranged on the outer side of the first composite layer (5), and on the outer side of the reinforcing layer (61), a wrapping layer (62) is fixedly connected.

2. The fatigue-resistant cable according to claim 1, characterized in that: The first composite layer (5) includes an anti-interference layer (51), on the outer side of which a reinforcing layer (52) is fixedly connected. The anti-interference layer (51) is fixedly connected to the outer side of the insulating layer (3), and the reinforcing layer (52) is located on the inner side of the outer protective layer (6).

3. The fatigue-resistant cable according to claim 2, wherein: The reinforcing layer (52) is arranged as a steel wire structure layer, the anti-interference layer (51) is arranged as an aluminum foil paper winding layer, the thickness of the anti-interference layer (51) is 0.05 mm - 0.15 mm, and the diameter of the reinforcing layer (52) is 0.2 mm - 0.4 mm.

4. The fatigue-resistant cable according to claim 2, wherein: The reinforcing layer (52) includes vertical steel wires (521) arranged on the outer side of the anti-interference layer (51), and inside the vertical steel wires (521), a steel wire ring (522) is fixedly connected. The steel wire ring (522) is also located on the outer side of the anti-interference layer (51). The outer sides of the vertical steel wires (521) and the steel wire ring (522) are all located on the inner side of the outer protective layer (6).

5. The fatigue-resistant cable according to claim 1, characterized in that: The reinforcing layer (61) includes a first braided wire (611) and a second braided wire (623) arranged on the outer side of the first composite layer (5). Both the first braided wire (611) and the second braided wire (623) are arranged as nylon braided wires, and the first braided wire (611) and the second braided wire (623) are wound around the outer side of the first composite layer (5) through a braiding process.

6. The fatigue-resistant cable according to claim 1, characterized in that: The wrapping layer (62) is arranged as a rubber layer, the diameter of the reinforcing layer (61) is also 0.2 mm - 0.4 mm, and the thickness of the wrapping layer (62) is 0.3 mm - 0.5 mm.

7. The fatigue-resistant cable according to claim 1, wherein: The insulating layer (3) is arranged as a polypropylene layer, the filling layer (4) is arranged as a glass fiber filament layer, and the thickness of the insulating layer (3) is 0.4 mm - 0.6 mm.

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