A stranded inner core multi-layer synergistic reinforcement composite cable

Abstract

This utility model relates to the field of composite cable technology, and more particularly to a multi-layered synergistic reinforced composite cable with a stranded inner core. The cable body includes a stranded inner core located at its center, an inner lining layer tightly fitted to the outside of the stranded inner core, and a composite layer surrounding the inner lining layer. The stranded inner core extends axially along the cable body. The composite layer includes an armor layer, a protective layer, a flame-retardant layer, and a wear-resistant layer arranged sequentially from the inside out. The armor layer, protective layer, flame-retardant layer, and wear-resistant layer are integrally formed by hot-melt bonding. This utility model achieves a significant improvement in comprehensive performance through the synergistic design of its multi-layered structure, possessing multiple advantages such as high strength, high flexibility, wear resistance, flame retardancy, and aging resistance. It is suitable for demanding applications such as marine engineering, lifting and transportation, and mining.

Description

Technical Field

[0001] This utility model relates to the field of composite cable technology, and in particular to a multi-layered synergistic reinforced composite cable with a stranded inner core. Background Technology

[0002] In industrial production and engineering applications, cables are critical load-bearing components, and their performance directly affects operational safety and efficiency. Traditional cables are mostly made of a single material, which has obvious limitations: pure metal cables are heavy, lack flexibility, and are prone to corrosion after long-term use; pure fiber cables lack strength and have weak shear resistance and abrasion resistance. To improve performance, multi-layer composite cables have been developed. However, existing multi-layer composite cables often use a simple stacking structure, and the interlayer bonding mostly relies on mechanical winding, which is prone to peeling and loosening, resulting in poor overall coordination. Moreover, in harsh environments, it is difficult to simultaneously achieve anti-aging, flame retardant, and abrasion resistance properties, resulting in a short service life and making it difficult to meet the requirements of complex working conditions. Utility Model Content

[0003] To address some of the problems existing in the prior art, this utility model provides a stranded inner core multi-layer synergistic reinforcement composite cable. Through the synergistic design of the multi-layer structure, this composite cable achieves a significant improvement in comprehensive performance, possessing multiple advantages such as high strength, high flexibility, wear resistance, flame retardancy, and aging resistance. It is suitable for high-requirement scenarios such as marine engineering, lifting and transportation, and mining.

[0004] To achieve the above objectives, this utility model provides a multi-layered synergistic reinforced composite cable with a stranded inner core, comprising a cable body, wherein the cable body includes a stranded inner core disposed at a central position, an inner lining layer tightly fitted to the outside of the stranded inner core, and a composite layer wrapped around the outside of the inner lining layer; the stranded inner core extends along the axial direction of the cable body, and the composite layer includes an armor layer, a protective layer, a flame-retardant layer, and an abrasion-resistant layer arranged sequentially from the inside to the outside; the armor layer, protective layer, flame-retardant layer, and abrasion-resistant layer are integrally formed by hot-melt bonding.

[0005] In operation, this invention first involves fabricating a stranded inner core using multiple strands of high-strength fiber and metal wire, arranged in alternating left-hand and right-hand twists with a twist pitch 8 to 12 times the core diameter. Next, an inner lining layer is tightly bonded to the outside of the stranded inner core. This inner lining layer is made of elastic rubber material and has multiple axially distributed grooves on its outer surface. Then, a composite layer is wrapped around the inner lining layer. This composite layer comprises, from the inside out, an armor layer, a protective layer, a flame-retardant layer, and a wear-resistant layer, all four layers integrally formed by hot-melt bonding. The armor layer is made of galvanized steel or aluminum alloy strip spirally wound, with sealant filling the gaps between the metal strips. The protective layer uses a polyolefin material with 2-5% UV-resistant additives and 1-3% antioxidants by mass. The flame-retardant layer is made of a thermoplastic elastomer containing flame retardants and has honeycomb-like micropores. The wear-resistant layer has uniformly distributed raised textures on its outer surface.

[0006] The beneficial effects of this invention are as follows: The stranded inner core uses a composite stranding of high-strength fiber filaments and metal wires, combined with alternating left-hand and right-hand stranding methods and optimized pitch, which improves flexibility and stability while ensuring high load-bearing strength; the inner lining layer uses elastic rubber material and has axial grooves, which not only tightly fit the inner core for cushioning protection but also enhance the bonding force with the outer layer and prevent interlayer slippage; the composite layer is integrally formed by hot-melt bonding, the armor layer improves the overall shear resistance and structural strength, the protective layer effectively resists ultraviolet rays and oxidation corrosion, the flame-retardant layer gives the cable excellent fire resistance, and the wear-resistant layer enhances friction resistance through surface raised textures. In summary, this cable has multiple advantages such as high strength, high flexibility, wear resistance, flame retardancy, and aging resistance, can adapt to complex working conditions, significantly extend service life, and improve operational safety and economy.

[0007] As a further improvement of this utility model, in order to improve flexibility and stability while ensuring high load-bearing strength, the stranded inner core is made of multiple strands of wire, the wire including high-strength fiber filaments and metal wires; the stranding pitch of the stranded inner core is 8 to 12 times the diameter of the stranded inner core, and the stranding direction of the stranded inner core is arranged alternately with left-hand and right-hand twists; the high-strength fiber filaments are made of aramid fiber, ultra-high molecular weight polyethylene fiber or carbon fiber, and the metal wires are made of stainless steel wire or galvanized steel wire.

[0008] As a further improvement of this utility model, in order to buffer stress and avoid extrusion deformation, improve the protection of the inner core and prevent interlayer slippage; the thickness of the inner lining layer is 0.5 to 1.5 mm, and the inner lining layer is made of elastic rubber material; the inner surface of the inner lining layer is closely attached to the outer surface of the stranded inner core, and the outer surface of the inner lining layer is provided with multiple grooves distributed along the axial direction.

[0009] As a further improvement of this utility model, in order to enhance the overall shear resistance and structural strength, and improve the sealing performance, the armor layer is formed by spirally winding a metal strip, which is a galvanized steel strip or an aluminum alloy strip; the gaps formed by the winding of the metal strip are filled with sealant; the thickness of the armor layer is 3-4 mm.

[0010] As a further improvement of this utility model, in order to enhance the cable's resistance to ultraviolet rays and aging, and extend its service life, the protective layer is made of polyolefin material, and the protective layer contains 2-5% by mass of anti-ultraviolet additives and 1-3% by mass of antioxidants; the thickness of the protective layer is 2-3 mm.

[0011] As a further improvement of this utility model, in order to reduce weight while improving the flame retardant performance of the cable, the flame retardant layer is made of thermoplastic elastomer containing flame retardant, and the flame retardant layer has honeycomb micropores; the thickness of the flame retardant layer is 3-6mm.

[0012] As a further improvement of this utility model, in order to enhance the wear resistance of the cable, the thickness of the wear-resistant layer is 1.5 to 3 mm, and the outer surface of the wear-resistant layer is provided with uniformly distributed raised textures. Attached Figure Description

[0013] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings: Figure 1 This is a schematic cross-sectional view of the overall structure of this utility model.

[0014] Figure 2 For the present utility model Figure 1 Schematic diagram of the cross section at point AA.

[0015] Figure 3 This is a schematic diagram of the inner lining layer in this utility model.

[0016] The cable consists of 1. cable body, 2. twisted inner core, 3. composite layer, 4. inner lining layer, 5. armor layer, 6. protective layer, 7. flame retardant layer, 8. wear-resistant layer, and 9. groove. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solutions in this utility model, the following description is provided in conjunction with the appendix. Figure 1-3 The present invention will be further described below. The following embodiments are only used to illustrate the technical solution of the present invention more clearly, and should not be used to limit the protection scope of the present invention.

[0018] like Figure 1-3The diagram illustrates a multi-layered reinforced composite cable with a stranded inner core, comprising a cable body 1. The cable body 1 includes a stranded inner core 2 positioned at its center, an inner lining layer 4 tightly fitted to the outside of the stranded inner core 2, and a composite layer 3 encasing the outer surface of the inner lining layer 4. The stranded inner core 2 extends axially along the cable body 1. The composite layer 3 includes, from the inside out, an armor layer 5, a protective layer 6, a flame-retardant layer 7, and an abrasion-resistant layer 8. The armor layer 5, protective layer 6, flame-retardant layer 7, and abrasion-resistant layer 8 are integrally formed by hot-melt bonding. The stranded inner core 2 is composed of multiple strands of wire, including high-strength fiber filaments and metal wires. The stranding pitch of the stranded inner core 2 is 8 to 12 times its diameter, and the stranding direction of the stranded inner core 2 is an alternating arrangement of left-handed and right-handed twists. The high-strength fiber filaments are made of aramid fiber, ultra-high molecular weight polyethylene fiber, or carbon fiber, and the metal wires are made of stainless steel wire or galvanized steel wire. The inner lining layer 4... The inner lining layer 4, with a thickness of 0.5–1.5 mm, is made of elastic rubber material. The inner surface of the inner lining layer 4 is tightly fitted to the outer surface of the stranded inner core 2. The outer surface of the inner lining layer 4 has multiple axially distributed grooves 9. The armor layer 5 is formed by spirally winding a metal strip, which is either galvanized steel or aluminum alloy. The gaps formed by the winding of the metal strip are filled with sealant. The armor layer 5 has a thickness of 3–4 mm. The protective layer 6 is made of polyolefin material and contains 2–5% by mass of UV-resistant additives and 1–3% by mass of antioxidants. The protective layer 6 has a thickness of 2–3 mm. The flame-retardant layer 7 is made of thermoplastic elastomer containing flame retardants and has honeycomb-like micropores. The flame-retardant layer 7 has a thickness of 3–6 mm. The wear-resistant layer 8 has a thickness of 1.5–3 mm, and its outer surface has uniformly distributed raised textures.

[0019] In operation, this invention first involves fabricating a stranded inner core 2, using multiple strands of wire containing high-strength fiber filaments and metal wires, stranded in an alternating left-hand and right-hand spiral pattern with a stranding pitch 8 to 12 times the diameter of the inner core 2. Then, an inner lining layer 4 is tightly fitted onto the outside of the stranded inner core 2. The inner lining layer 4 is made of elastic rubber material, and its outer surface has multiple axially distributed grooves 9. Next, a composite layer 3 is wrapped around the inner lining layer 4. The composite layer 3 includes, from the inside out, an armor layer 5, a protective layer 6, a flame-retardant layer 7, and a wear-resistant layer 8, all four layers integrally formed by hot-melt bonding. The armor layer 5 is spirally wound from galvanized steel strip or aluminum alloy strip, with sealant filling the gaps between the metal strips. The protective layer 6 is made of polyolefin material with 2-5% UV-resistant additives and 1-3% antioxidants by mass. The flame-retardant layer 7 is made of thermoplastic elastomer containing flame retardants and has honeycomb-like micropores. The wear-resistant layer 8 has uniformly distributed raised textures on its outer surface.

[0020] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A stranded inner core multi-layer synergistic reinforcement composite cable, comprising a cable body (1), characterized in that: The cable body (1) includes a stranded inner core (2) located at the center, an inner lining layer (4) closely attached to the outside of the stranded inner core (2), and a composite layer (3) wrapped around the outside of the inner lining layer (4); the stranded inner core (2) extends along the axial direction of the cable body (1), and the composite layer (3) includes an armor layer (5), a protective layer (6), a flame retardant layer (7), and a wear-resistant layer (8) arranged sequentially from the inside to the outside; the armor layer (5), the protective layer (6), the flame retardant layer (7), and the wear-resistant layer (8) are integrally formed by hot melt bonding.

2. The stranded inner core multi-layer synergistic reinforcement composite cable according to claim 1, characterized in that: The stranded inner core (2) is made of multiple strands of wire cores, including high-strength fiber filaments and metal wires; the stranding pitch of the stranded inner core (2) is 8 to 12 times the diameter of the stranded inner core (2), and the stranding direction of the stranded inner core (2) is arranged alternately with left-hand and right-hand twists; the high-strength fiber filaments are made of aramid fiber, ultra-high molecular weight polyethylene fiber or carbon fiber, and the metal wires are made of stainless steel wire or galvanized steel wire.

3. The stranded inner core multi-layer synergistic reinforcement composite cable according to claim 1, characterized in that: The thickness of the inner lining layer (4) is 0.5 to 1.5 mm. The inner lining layer (4) is made of elastic rubber material. The inner surface of the inner lining layer (4) is closely attached to the outer surface of the twisted inner core (2). The outer surface of the inner lining layer (4) is provided with a plurality of grooves (9) distributed along the axial direction.

4. The stranded inner core multi-layer synergistic reinforcement composite cable according to claim 1, characterized in that: The armor layer (5) is formed by spirally winding a metal strip, which is a galvanized steel strip or an aluminum alloy strip; the gap formed by the winding of the metal strip is filled with sealant; the thickness of the armor layer (5) is 3-4 mm.

5. The stranded inner core multi-layer synergistic reinforcement composite cable according to claim 1, characterized in that: The protective layer (6) is made of polyolefin material, and UV-resistant additives and antioxidants are added to the protective layer (6); the thickness of the protective layer (6) is 2-3 mm.

6. The stranded inner core multi-layer synergistic reinforcement composite cable according to claim 1, characterized in that: The flame retardant layer (7) is made of a thermoplastic elastomer containing flame retardant, and the flame retardant layer (7) has honeycomb micropores; the thickness of the flame retardant layer (7) is 3-6 mm.

7. The stranded inner core multi-layer synergistic reinforcement composite cable according to claim 1, characterized in that: The wear-resistant layer (8) has a thickness of 1.5 to 3 mm, and the outer surface of the wear-resistant layer (8) is provided with uniformly distributed raised textures.

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