A lightweight high tenacity steel wire rope core

Abstract

The utility model provides a lightweight high tenacity steel wire rope core, contain aramid fiber center core, ultrahigh molecular weight polyethylene outer layer, rhombus sabai fiber filling core, inner layer steel wire, outer layer steel wire, arc oil containing macromolecular polymer fiber core, flexible layer and wear -resisting layer, realize light weight and high strength unity. Aromatic amide fiber core provides high specific strength and impact resistance, improves tenacity and reduces weight, ultrahigh molecular weight polyethylene outer layer enhances the fatigue resistance and buffers stress. Inner layer steel wire, outer layer steel wire are uniformly arranged, and the rhombus sabai fiber filling core is combined to disperse local stress, fill the gap, improve the compactness and stability. Arc oil containing macromolecular fiber core limits and continuously releases lubrication to outer layer steel wire, cooperates with the groove and the through -hole of flexible layer and wear -resisting layer, realizes all -round lubrication and wear -resisting protection, guarantees flexibility and structure stability simultaneously. Therefore this steel wire rope core has light weight, high tenacity, fatigue resistance, wear resistance and self -lubricating function, is suitable for high strength use.

Description

Technical Field

[0001] This utility model relates to the field of steel wire rope core technology, specifically a lightweight and high-toughness steel wire rope core. Background Technology

[0002] Steel wire rope is a helical bundle of steel wires twisted together according to certain rules, meeting specific mechanical properties and geometric dimensions. It consists of steel wires, a core, and lubricant. Steel wire rope possesses advantages such as high strength, light weight, stable operation, resistance to sudden breakage, and reliable use, making it widely used in metallurgy, mining, oil and gas drilling, machinery, chemical industry, aerospace, and other fields. The quality of the steel wire rope directly affects its performance, and the core, as the core component, is a crucial element in ensuring the overall quality and reliability of the steel wire rope.

[0003] In existing technologies, the core structure of wire ropes is mostly composed of a single material, such as a fiber core or a metal core. While these provide some support and cushioning, they still have some shortcomings. Fiber cores, although lightweight and flexible, have limited strength and impact resistance, making them unsuitable for high-load conditions. Metal cores, while strong, increase the overall weight of the wire rope, hindering lightweight design. Single-material cores are prone to localized stress concentration during repeated bending and stretching of the wire rope, leading to wire breakage or core damage, thus reducing the service life of the wire rope. Therefore, it is necessary to provide an ultra-high molecular weight polymer (UHMWPE) core that combines lightweight, high strength, and high toughness, thereby improving the overall performance and service life of the wire rope. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a lightweight and high-toughness steel wire rope core, which effectively improves some of the problems of insufficient strength in traditional steel wire rope cores.

[0005] A lightweight, high-toughness steel wire rope core comprises an aramid fiber core, an ultra-high molecular weight polyethylene outer layer, a rhomboid sisal fiber filling core, a predetermined number of inner steel wires, a predetermined number of outer steel wires, a predetermined number of fan-shaped oil-containing polymer fiber cores, a flexible layer, and a wear-resistant layer. The ultra-high molecular weight polyethylene outer layer is wrapped around the outer side of the aramid fiber core. The predetermined number of inner steel wires are evenly wound around the outer side of the ultra-high molecular weight polyethylene outer layer, and the predetermined number of outer steel wires are evenly wound around the outer side of the inner steel wire core. The flexible layer is arranged around the outer side of the inner steel wire, the wear-resistant layer is arranged around the outer side of the flexible layer, the diamond-shaped sisal fiber filling core is arranged to fill the gap between the inner steel wire and the outer steel wire, and the fan-shaped oil-containing polymer fiber core is arranged to fill the gap between the outer steel wire and the flexible layer. The flexible layer and the wear-resistant layer are recessed into the side of the fan-shaped oil-containing polymer fiber core with a predetermined number of grooves, and the center of the groove is provided with a through hole penetrating the flexible layer.

[0006] Preferably, the groove is a conical groove.

[0007] Preferably, the depth of the groove is 0.3 mm to 0.8 mm. The diameter of the through hole is 0.1 mm.

[0008] Preferably, the number of the rhomboid sisal fiber filling core, the inner steel wire, the outer steel wire, and the fan-shaped oil-containing polymer fiber core are all 8.

[0009] Preferably, the diameter of the outer steel wire is 2 to 2.5 times the diameter of the inner steel wire.

[0010] Preferably, the fan-shaped oil-impregnated polymer fiber core is a polyamide fiber core, polyester fiber core, or polypropylene fiber core that is fully impregnated with oil.

[0011] Preferably, the flexible layer is a natural rubber flexible layer, a nitrile rubber flexible layer, or a thermoplastic polyurethane elastomer flexible layer.

[0012] Preferably, the wear-resistant layer is a polyurethane wear-resistant layer, an ultra-high molecular weight polyethylene wear-resistant coating, or a polyamide wear-resistant coating.

[0013] Compared with the prior art, the present invention has the following beneficial effects: This invention provides a lightweight, high-toughness steel wire rope core, comprising an aramid fiber central core, an ultra-high molecular weight polyethylene outer layer, a rhomboid sisal fiber filling core, a predetermined number of inner steel wires, a predetermined number of outer steel wires, a predetermined number of fan-shaped oil-containing polymer fiber cores, a flexible layer, and a wear-resistant layer, achieving a balance between weight reduction and strength enhancement. Specifically, the central aramid fiber central core possesses extremely high specific strength and impact resistance, effectively improving the rope core's toughness while reducing overall weight. The ultra-high molecular weight polyethylene outer layer covering the aramid fiber central core imparts excellent fatigue resistance and provides a certain degree of cushioning during operation, thus preventing breakage due to concentrated stress. The inner and outer steel wires are evenly arranged in a winding pattern, enhancing the overall load-bearing capacity and ensuring uniform distribution of the steel wires under stress, reducing the risk of single-wire breakage. The diamond-shaped sisal fiber core filling the space between the inner and outer steel wires effectively fills the gaps, improving the tightness and stability of the rope core. Simultaneously, the diamond-shaped sisal fiber core buffers localized stress concentration between the steel wires, reducing the risk of single wire breakage. The fan-shaped oil-impregnated polymer fiber core fills the space between the outer steel wire and the flexible layer. This core restricts and positions the outer steel wire, making their arrangement more compact and regular. It also transfers localized stress to the fan-shaped oil-impregnated polymer fiber core when the outer steel wire is under stress, reducing the peak stress on a single outer steel wire and thus lowering the risk of localized overload. Furthermore, it allows the rope core to continuously release lubricating components under pressure, reducing friction and heat generation between the steel wires and extending service life. Meanwhile, the grooves and through holes on the flexible and wear-resistant layers allow the grease inside the fan-shaped oil-impregnated polymer fiber core to smoothly penetrate to the outside of the rope core. After the rope core is made into a wire rope, the grease can be delivered to the outer strands of the steel wire, achieving comprehensive lubrication protection. The outer flexible and wear-resistant layers ensure the rope core's flexibility during repeated bending and enhance its wear resistance. The flexible layer also makes the bond between the rope core and the surrounding strands tighter. Therefore, this lightweight, high-toughness steel wire rope core not only achieves significant improvements in weight, strength, and toughness, but also incorporates fatigue resistance, wear resistance, and self-lubricating properties, realizing a multi-functional integration. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the lightweight, high-toughness steel wire rope core described in this utility model; Figure 2 A schematic diagram of the cross-sectional structure of the grooved part of the lightweight, high-toughness steel wire rope core of this utility model; in: 10-Arylamide fiber core, 20-Ultra-high molecular weight polyethylene outer layer, 30-Rhomboid sisal fiber filling core, 40-Inner steel wire, 50-Outer steel wire, 60-Fan-shaped oil-containing polymer fiber core, 70-Flexible layer, 80-Abrasion-resistant layer, 90-Groove, 11-Through hole. Detailed Implementation

[0015] The embodiments described below are merely some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0016] See Figure 1 as well as Figure 2 This embodiment provides a lightweight, high-toughness steel wire rope core, comprising an aramid fiber core 10, an ultra-high molecular weight polyethylene outer layer 20, a rhomboid sisal fiber filling core 30, a predetermined number of inner steel wires 40, a predetermined number of outer steel wires 50, a predetermined number of fan-shaped oil-containing polymer fiber cores 60, a flexible layer 70, and a wear-resistant layer 80. The ultra-high molecular weight polyethylene outer layer 20 is wrapped around the outer side of the aramid fiber core 10. The predetermined number of inner steel wires 40 are evenly arranged around the outer side of the ultra-high molecular weight polyethylene outer layer 20, and the predetermined number of outer steel wires 50 are evenly arranged around the outer side of the inner steel wires 40. The flexible layer 70 is arranged around the outer side of the outer steel wire 50, and the wear-resistant layer 80 is arranged around the outer side of the flexible layer 70. The diamond-shaped sisal fiber filling core 30 fills the gap between the inner steel wire 40 and the outer steel wire 50, and the fan-shaped oil-containing polymer fiber core 60 fills the gap between the outer steel wire 50 and the flexible layer 70. The flexible layer 70 and the wear-resistant layer 80 are recessed into the fan-shaped oil-containing polymer fiber core 60 with a predetermined number of grooves 90. The center of each groove 90 is provided with a through hole 11 that penetrates the flexible layer 70.

[0017] Preferably, the groove 90 is a conical groove 90, and its arrangement is such that multiple rows are evenly distributed along the longitudinal direction of the wire rope core. Each row contains multiple grooves 90, and the spacing between the multiple rows of grooves is equal or varies regularly according to the design load requirements, so as to ensure the uniform penetration and distribution of grease on the outer periphery of the rope core. Due to the presence of grease, a certain vacuum is formed at the groove 90 under friction and compression, which acts as a suction cup, thereby allowing the rope core and the wire rope strands covering the outside of the rope core to be tightly wrapped around the outer periphery of the rope core, reducing the possibility of rope core extrusion. Meanwhile, the conical groove 90 is recessed inward from the outer peripheral wall of the wear-resistant layer 80 on the side away from the flexible layer 70, and recesses into most of the flexible layer 70. A through hole 11 is formed at the bottom of the groove 90 on the side away from the opening. This through hole 11 connects to the fan-shaped oil-containing polymer fiber core 60. When the wire rope is subjected to tensile or bending loads during use, the grease in the fan-shaped oil-containing polymer fiber core 60 can partially penetrate through the through hole 11 to the conical groove 90, and then reach the strands of the wire rope through the conical groove 90 to form a lubricating film. This lubricating film not only reduces friction and wear between the wire rope strands but also reduces localized stress concentration.

[0018] Preferably, the depth of the groove 90 is 0.3mm to 0.8mm, and the diameter of the through hole 11 is 0.1mm. The groove 90, with a depth of 0.3mm to 0.8mm, forms a stable adsorption and lubrication channel when the wire rope is under stress; the through hole 11, with a diameter of 0.1mm, ensures that grease can continuously and slowly penetrate between the wire rope strands, achieving long-term lubrication. Therefore, under repeated bending, stretching, and vibration conditions, the wire rope core and the wire rope strands can always maintain good contact and lubrication, thereby reducing local friction and wear, and improving overall fatigue resistance and service life.

[0019] Preferably, the number of the rhomboid sisal fiber filling core 30, the inner steel wire 40, the outer steel wire 50, and the fan-shaped oil-containing polymer fiber core 60 are all 8.

[0020] Preferably, the rhomboid sisal fiber filling core 30 is an oil-impregnated rhomboid sisal fiber filling core 30. This provides additional lubrication while filling the gaps between the steel wires. The oil-impregnated rhomboid sisal fiber not only effectively disperses localized stress between the inner steel wire 40 and the outer steel wire 50, buffers impact stress, and reduces the risk of single wire breakage, but also continuously releases grease during the rope core's operation, reducing friction and wear between the steel wires, thereby further improving the durability and service life of the wire rope. Furthermore, the natural fiber structure of rhomboid sisal can improve the density and stability of the rope core, enhance overall flexibility, and allow the rope core to maintain good shape and structural integrity when subjected to bending and tensile loads.

[0021] Preferably, the diameter of the outer steel wire 50 is 2 to 2.5 times the diameter of the inner steel wire 40. Increasing the diameter of the outer steel wire 50 significantly improves the overall load-bearing capacity and tensile strength of the wire rope, while ensuring greater stability of the outer steel wire 50 under stress, reducing stress concentration and breakage risks in individual filaments. Furthermore, the combination of the thicker outer steel wire 50 with the inner steel wire 40 and the rhomboid sisal fiber filling core 30 forms a more compact and stable structure, improving the structural integrity and fatigue resistance of the rope core, thereby maintaining good performance and long service life under high-intensity and complex working conditions.

[0022] Preferably, the fan-shaped oil-impregnated polymer fiber core 60 is a polyamide fiber core, polyester fiber core, or polypropylene fiber core that is fully impregnated with grease. This fan-shaped oil-impregnated polymer fiber core fills the gap between the outer steel wire 50 and the flexible layer 70, continuously releasing grease during the stress and bending process of the wire rope. The lubricating oil is delivered to the strands around the outer periphery of the wire rope through the through-hole 11 and groove 90, forming a durable lubricating film. This effectively reduces friction and wear between the steel wires, reduces local stress concentration, and extends the service life of the wire rope. Simultaneously, the fan-shaped structure positions and constrains the outer steel wire 50, making the wire arrangement more compact and regular, which helps improve the overall stability and load-bearing capacity of the rope core.

[0023] Preferably, the flexible layer 70 is a natural rubber flexible layer 70, a nitrile rubber flexible layer 70, or a thermoplastic polyurethane elastomer flexible layer 70. This flexible layer 70 surrounds the outer steel wire 50 and provides good elastic cushioning when the wire rope is subjected to bending, tensile, and vibration loads, reducing friction and stress concentration between the outer steel wire strands and the core, thereby effectively extending the service life of the wire rope. Simultaneously, the flexible layer 70 enhances the tightness of the bond between the core and the outer steel wire strands, making the wire rope structure made from the core more stable and improving overall fatigue resistance and tensile strength.

[0024] Preferably, the wear-resistant layer 80 is a polyurethane wear-resistant layer 80, an ultra-high molecular weight polyethylene wear-resistant coating, or a polyamide wear-resistant coating. The wear-resistant layer 80 can provide high-strength surface protection between the core and the outer strands of the wire rope under repeated bending, stretching, and friction conditions, significantly improving the wear resistance and service life of the wire rope.

[0025] The lightweight, high-toughness steel wire rope core provided by this invention achieves a balance between weight reduction and strength enhancement. Specifically, the centrally located aramid fiber core 10 possesses extremely high specific strength and impact resistance, effectively improving the core's toughness while reducing overall weight. The ultra-high molecular weight polyethylene outer layer 20 covering the aramid fiber core 10 imparts excellent fatigue resistance to the core and provides a certain degree of cushioning during operation, thus preventing breakage due to concentrated stress. The inner and outer steel wires 40 are evenly arranged in a winding pattern, enhancing the overall load-bearing capacity and ensuring uniform distribution of the wires under stress, reducing the risk of single-wire breakage. The diamond-shaped sisal fiber filling core 30 filling the spaces between the inner and outer steel wires 40 effectively fills the gaps, improving the core's density and stability. Simultaneously, the diamond-shaped sisal fiber filling core 30 can also buffer localized stress concentration between the wires, further reducing the risk of single-wire breakage. Between the outer steel wire 50 and the flexible layer 70, a fan-shaped oil-impregnated polymer fiber core 60 is filled. This core restricts and positions the outer steel wire 50, making its arrangement more compact and regular. It also transfers localized stress to the core when the outer steel wire is under stress, reducing the peak stress on a single outer wire and thus lowering the risk of localized overload. Simultaneously, it allows the core to continuously release lubricating components under pressure, reducing friction and heat generation between the wires and extending service life. Furthermore, the grooves 90 and through holes 11 on the flexible layer 70 and the wear-resistant layer 80 allow the grease inside the fan-shaped oil-impregnated polymer fiber core 60 to easily penetrate to the outside of the core. After the core is made into a wire rope, the grease can be delivered to the outer strands of the wire, achieving comprehensive lubrication protection. The outer flexible layer 70 and wear-resistant layer 80 ensure the flexibility of the rope core during repeated bending and enhance its wear resistance. The flexible layer 70 also makes the bond between the rope core and the surrounding strands tighter. Therefore, this lightweight, high-toughness steel wire rope core not only achieves significant improvements in weight, strength, and toughness, but also takes into account fatigue resistance, wear resistance, and self-lubricating properties, realizing a multi-functional organic integration.

[0026] The above-disclosed embodiments are merely some preferred embodiments of the present utility model, and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent changes made in accordance with the scope of the present utility model patent application shall still fall within the scope of the present utility model.

Claims

1. A lightweight, high-toughness steel wire rope core, characterized in that: It comprises an aramid fiber core, an ultra-high molecular weight polyethylene outer layer, a rhomboid sisal fiber filling core, a predetermined number of inner steel wires, a predetermined number of outer steel wires, a predetermined number of fan-shaped oil-containing polymer fiber cores, a flexible layer, and a wear-resistant layer. The ultra-high molecular weight polyethylene outer layer is wrapped around the outer side of the aramid fiber core. The predetermined number of inner steel wires are evenly wrapped around the outer side of the ultra-high molecular weight polyethylene outer layer, and the predetermined number of outer steel wires are evenly wrapped around the outer side of the inner steel wires. The flexible layer is wrapped around the outer side of the outer steel wires, and the wear-resistant layer is wrapped around the outer side of the flexible layer. The rhomboid sisal fiber filling cores fill the gap between the inner and outer steel wires, and the fan-shaped oil-containing polymer fiber cores fill the gap between the outer steel wires and the flexible layer. The flexible layer and the wear-resistant layer are recessed into the fan-shaped oil-containing polymer fiber core with a predetermined number of grooves, and a through hole penetrating the flexible layer is provided in the center of each groove.

2. The lightweight, high-toughness steel wire rope core as described in claim 1, characterized in that, The groove is a conical groove.

3. The lightweight, high-toughness steel wire rope core as described in claim 2, characterized in that, The depth of the groove is 0.3 mm to 0.8 mm.

4. The lightweight, high-toughness steel wire rope core as described in claim 1, characterized in that, The diameter of the through hole is 0.1 mm.

5. The lightweight, high-toughness steel wire rope core as described in claim 1, characterized in that, The number of the rhomboid sisal fiber filling core, the inner steel wire, the outer steel wire, and the fan-shaped oil-containing polymer fiber core are all 8.

6. The lightweight, high-toughness steel wire rope core as described in claim 1, characterized in that, The diameter of the outer steel wire is 2 to 2.5 times the diameter of the inner steel wire.

7. The lightweight, high-toughness steel wire rope core as described in claim 1, characterized in that, The fan-shaped oil-impregnated polymer fiber core is a polyamide fiber core, polyester fiber core, or polypropylene fiber core that is fully impregnated with oil.

8. The lightweight, high-toughness steel wire rope core as described in claim 1, characterized in that, The flexible layer is a natural rubber flexible layer, a nitrile rubber flexible layer, or a thermoplastic polyurethane elastomer flexible layer.

9. The lightweight, high-toughness steel wire rope core as described in claim 1, characterized in that, The wear-resistant layer is a polyurethane wear-resistant layer, an ultra-high molecular weight polyethylene wear-resistant coating, or a polyamide wear-resistant coating.

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