High fatigue high breaking hoisting steel wire rope
Patent Information
- Application Number
- CN202522287077.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-29
- Publication Date
- 2026-10-20
- Estimated Expiration
- 2035-10-29
AI Technical Summary
首先，中心股和外层股多为全钢丝结构，钢丝之间摩擦较大，容易产生局部磨损和断丝，导致疲劳寿命较短
本实用新型提供一种高疲劳高破断起重用钢丝绳，其包含一中心股、预定数量的三角绳芯、预定数量的外层压实股以及填充层。中心股包含一中心钢丝、预定数量的超高分子纤维芯、预定数量的加强钢丝以及柔性层，不仅提高了钢丝绳的整体强度，而且显著改善了疲劳寿命和抗弯折性能，使钢丝绳在长期循环载荷下不易断裂。其次，设置的三角绳芯与外层压实股贴合使钢丝绳整体密实度增强，还能够优化钢丝绳受载均匀性，减少应力集中，提高抗扭性能和承载能力；外层压实股进一步提升破断强度及耐磨性能。此外，填充层填充于中心股、三角绳芯及外层压实股之间的间隙，减少钢丝之间摩擦，从而延长使用寿命，提高操作舒适性和安全性。因此，本实用新型的高疲劳高破断起重用钢丝绳兼具高破断强度、高疲劳寿命、良好柔性以及优异耐磨耐腐蚀性能，适用于高强度起重、吊装及长期重复使用的工况。
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Figure CN224870391U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wire rope technology, specifically to a high-fatigue, high-breaking-strength lifting wire rope. Background Technology
[0002] Steel wire rope is an important load-bearing material widely used in lifting, hoisting, rigging, mining, and port industries. As modern engineering demands increasingly higher load-bearing capacity, service life, and safety from lifting equipment, steel wire ropes with high strength, long fatigue life, and high breaking load are receiving more and more attention.
[0003] Currently, most lifting wire ropes on the market are made of stranded metal wires, typically consisting of a center strand and outer strands. While these wire ropes can meet load-bearing requirements under normal working conditions, they still present several problems under long-term cyclic loads or high-intensity working conditions. First, the center and outer strands are mostly all-steel wire structures, resulting in significant friction between the wires, which easily leads to localized wear and wire breakage, resulting in a short fatigue life. Second, all-steel wire structures are prone to stress concentration under bending or torsion conditions, reducing overall breaking strength. Therefore, it is necessary to provide a high-fatigue, high-breaking-strength lifting wire rope to meet the comprehensive requirements of safety, durability, and flexibility in modern high-intensity lifting operations. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a high-fatigue, high-breaking-strength lifting wire rope, which effectively improves some of the deficiencies of traditional wire ropes in terms of fatigue life, breaking strength, and flexibility.
[0005] A high-fatigue, high-breaking-strength lifting wire rope comprises a central strand, a predetermined number of triangular cores, a predetermined number of outer compacted strands, and a filler layer. The central strand includes a central steel wire, a predetermined number of ultra-high molecular weight fiber cores, a predetermined number of reinforcing steel wires, and a flexible layer. The ultra-high molecular weight fiber cores are twisted around the outside of the central steel wire, the reinforcing steel wires are twisted around the outside of the ultra-high molecular weight fiber cores, and the flexible layer is wrapped around the outside of the reinforcing steel wires. The triangular cores are twisted around the outside of the flexible layer, with one tip of the triangular cores facing away from the central steel wire. The outer compacted strands are twisted around the outside of the central strand and are in contact with adjacent triangular cores. The filler layer fills the gaps between the central strand, the triangular cores, and the outer compacted strands.
[0006] Preferably, the outer compacted strand comprises an inner steel wire, multiple ultra-high molecular weight polyethylene fiber bundles twisted around the outer side of the inner steel wire, a middle steel wire twisted around the outer side of the ultra-high molecular weight polyethylene fiber bundles, and multiple outer steel wires compacted and twisted around the outer side of the middle steel wire.
[0007] Preferably, the ultra-high molecular weight fiber core is an ultra-high molecular weight polyethylene fiber core.
[0008] Preferably, the flexible layer is a polyurethane flexible layer, a nitrile rubber flexible layer, or a thermoplastic elastomer flexible layer.
[0009] Preferably, the triangular rope core comprises an aramid fiber core and multiple reinforcing steel wires wrapped around the outside of the aramid fiber core.
[0010] Preferably, the filling layer is a hemp rope fiber filling layer.
[0011] Preferably, the filler layer is impregnated with grease.
[0012] Preferably, the outer compacted strand is provided with a corrosion-resistant layer and a wear-resistant layer that wrap around it from the inside out.
[0013] Compared with the prior art, the present invention has the following beneficial effects: This invention provides a high-fatigue, high-breaking-strength lifting wire rope, comprising a central strand, a predetermined number of triangular core strands, a predetermined number of outer compacted strands, and a filler layer. The central strand includes a central steel wire, a predetermined number of ultra-high molecular weight fiber core strands, a predetermined number of reinforcing steel wires, and a flexible layer. This not only improves the overall strength of the wire rope but also significantly enhances its fatigue life and bending resistance, making it less prone to breakage under long-term cyclic loads. Secondly, the triangular core strands' close fit with the outer compacted strands increases the overall density of the wire rope, optimizes load uniformity, reduces stress concentration, and improves torsional resistance and load-bearing capacity. The outer compacted strands further enhance breaking strength and wear resistance. Furthermore, the filler layer fills the gaps between the central strand, triangular core strands, and outer compacted strands, reducing friction between the steel wires, thereby extending service life and improving operational comfort and safety. Therefore, the high fatigue and high breaking strength lifting wire rope of this utility model has high breaking strength, long fatigue life, good flexibility and excellent wear and corrosion resistance, and is suitable for high-intensity lifting, hoisting and long-term repeated use. Attached Figure Description
[0014] Figure 1 This is a structural schematic diagram of the high fatigue and high breaking strength lifting wire rope described in this utility model; in: 10-Center strand, 20-Triangular rope core, 30-Outer compacted strand, 40-Filling layer, 11-Center steel wire, 12-Ultra-high molecular weight fiber core, 13-Reinforcing steel wire, 14-Flexible layer, 31-Inner steel wire, 32-Ultra-high molecular weight polyethylene fiber bundle, 33-Middle steel wire, 34-Outer steel wire. 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 This embodiment provides a high fatigue and high breaking strength lifting wire rope, which includes a central strand 10, a predetermined number of triangular cores 20, a predetermined number of outer compacted strands 30, and a filler layer 40. The central strand 10 includes a central steel wire 11, a predetermined number of ultra-high molecular weight fiber cores 12, a predetermined number of reinforcing steel wires 13, and a flexible layer 14. The ultra-high molecular weight fiber cores 12 are twisted around the outside of the central steel wire 11, the reinforcing steel wires 13 are twisted around the outside of the ultra-high molecular weight fiber cores 12, and the flexible layer 14 is wrapped around the outside of the reinforcing steel wires 13. The triangular cores 20 are twisted around the outside of the flexible layer 14, with one tip of the triangular core 20 facing away from the central steel wire 11. The outer compacted strands 30 are twisted around the outside of the central strand 10, and the outer compacted strands 30 are in contact with the adjacent triangular cores 20. The filler layer 40 fills the gaps between the central strand 10, the triangular cores 20, and the outer compacted strands 30.
[0017] Preferably, the outer compacted strand 30 comprises an inner steel wire 31, multiple ultra-high molecular weight polyethylene fiber bundles 32 twisted around the inner steel wire 31, a middle steel wire 33 twisted around the ultra-high molecular weight polyethylene fiber bundles 32, and multiple outer steel wires 34 compacted and twisted around the middle steel wire 33. It should be noted that when the wire rope is subjected to tensile loads, the inner steel wire 31, middle steel wire 33, and outer steel wire 34 bear the main tensile force, enhancing the overall breaking strength and density. The ultra-high molecular weight polyethylene fiber bundles 32 share some of the stress and provide excellent fatigue resistance. Simultaneously, the outer compacted strand 30 effectively buffers the mutual friction between the steel wires, reducing localized wear and extending the service life of the wire rope.
[0018] Preferably, the ultra-high molecular weight polyethylene (UHMWPE) fiber core 12 is made of UHMWPE fiber. It possesses extremely high strength and excellent fatigue resistance. By placing the UHMWPE fiber core outside the central steel wire 11, it can share some of the tensile stress of the central steel wire 11 and the outer reinforcing steel wire 13, reducing the risk of wear and breakage of the steel wire under cyclic loads, thereby significantly improving the overall fatigue life and breaking strength of the wire rope. Furthermore, the low density and flexibility of the UHMWPE fiber core help improve the flexibility of the central strand 10, enabling the wire rope to maintain good operability and safety under conditions of multiple bends and high frequency of use.
[0019] Preferably, the flexible layer 14 is a polyurethane flexible layer 14, a nitrile rubber flexible layer 14, or a thermoplastic elastomer flexible layer 14. The flexible layer 14 of this application covers the outside of the reinforcing steel wire 13, which not only provides good elastic cushioning and reduces friction and wear between the steel wires, but also effectively absorbs external impact and vibration loads, thereby significantly improving the fatigue life of the wire rope under bending and cyclic load conditions. It also makes the wire rope more tightly twisted.
[0020] Preferably, the triangular rope core 20 comprises an aramid fiber core and multiple reinforcing steel wires 13 wrapped around the aramid fiber core. It should be noted that the aramid fiber core has high strength, is lightweight, and has excellent fatigue resistance, enabling it to share some of the stress in the central strand 10 when the wire rope is subjected to cyclic loads, reducing the risk of wire breakage. The reinforcing steel wires 13 wrapped around it further improve the overall strength and load-bearing capacity of the triangular rope core 20, allowing the wire rope to maintain stable structural performance under multi-directional tension and bending conditions. Simultaneously, the triangular rope core 20 helps to evenly distribute stress on the wire rope under load, reducing stress concentration, improving breaking strength and service life, and also making the wire rope twist more compact.
[0021] Preferably, the filler layer 40 is a hemp fiber filler layer 40, which is impregnated with grease. Hemp fibers have good flexibility and cushioning properties, filling the gaps between the central strand 10, the triangular core 20, and the outer compacted strand 30, effectively reducing direct friction between the steel wires and lowering the risk of localized wear and wire breakage. After being impregnated with grease, the filler layer 40 not only further reduces the coefficient of friction but also provides a certain degree of lubrication and corrosion protection, thereby significantly extending the service life of the wire rope.
[0022] Preferably, the outer compacted strand 30 is surrounded by a corrosion-resistant layer and a wear-resistant layer from the inside out. The corrosion-resistant layer is a phosphate corrosion-resistant coating, and the wear-resistant layer is an aluminum oxide wear-resistant layer. The corrosion-resistant layer of this application effectively prevents oxidation and corrosion of the steel wire in humid, salt spray, or chemical environments, extending the service life of the steel wire rope. The wear-resistant layer improves the wear resistance of the steel wire rope under friction and contact conditions, reducing the wear rate of the outer steel wire 34.
[0023] This invention provides a high-fatigue, high-breaking-strength lifting wire rope, comprising a central strand 10, a predetermined number of triangular cores 20, a predetermined number of outer compacted strands 30, and a filler layer 40. The central strand 10 includes a central steel wire 11, a predetermined number of ultra-high molecular weight fiber cores 12, a predetermined number of reinforcing steel wires 13, and a flexible layer 14. This not only improves the overall strength of the wire rope but also significantly enhances its fatigue life and bending resistance, making it less prone to breakage under long-term cyclic loads. Furthermore, the close fit between the triangular cores 20 and the outer compacted strands 30 increases the overall density of the wire rope, optimizes the uniformity of load distribution, reduces stress concentration, and improves torsional resistance and load-bearing capacity. The outer compacted strands 30 further enhance breaking strength and wear resistance. In addition, the filler layer 40 fills the gaps between the central strand 10, triangular cores 20, and outer compacted strands 30, reducing friction between the wires, thereby extending service life and improving operational comfort and safety. Therefore, the high fatigue and high breaking strength lifting wire rope of this utility model has high breaking strength, long fatigue life, good flexibility and excellent wear and corrosion resistance, and is suitable for high-intensity lifting, hoisting and long-term repeated use.
[0024] 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 high-fatigue, high-breaking-strength lifting wire rope, characterized in that: It comprises a central strand, a predetermined number of triangular rope cores, a predetermined number of outer compacted strands, and a filler layer. The central strand includes a central steel wire, a predetermined number of ultra-high molecular weight fiber cores, a predetermined number of reinforcing steel wires, and a flexible layer. The ultra-high molecular weight fiber cores are twisted around the outside of the central steel wire, the reinforcing steel wires are twisted around the outside of the ultra-high molecular weight fiber cores, and the flexible layer is wrapped around the outside of the reinforcing steel wire. The triangular rope cores are twisted around the outside of the flexible layer, with one tip of the triangular rope cores facing away from the central steel wire. The outer compacted strands are twisted around the outside of the central strand and are in contact with adjacent triangular rope cores. The filler layer fills the gaps between the central strand, the triangular rope cores, and the outer compacted strands.
2. The high fatigue and high breaking strength lifting wire rope as described in claim 1, characterized in that, The outer compacted strand comprises an inner steel wire, multiple ultra-high molecular weight polyethylene fiber bundles twisted around the outer side of the inner steel wire, a middle steel wire twisted around the outer side of the ultra-high molecular weight polyethylene fiber bundles, and multiple outer steel wires compacted and twisted around the outer side of the middle steel wire.
3. The high fatigue and high breaking strength lifting wire rope as described in claim 1, characterized in that, The ultra-high molecular weight fiber core is an ultra-high molecular weight polyethylene fiber core.
4. The high fatigue and high breaking strength lifting wire rope as described in claim 1, characterized in that, The flexible layer is a polyurethane flexible layer, a nitrile rubber flexible layer, or a thermoplastic elastomer flexible layer.
5. The high fatigue and high breaking strength lifting wire rope as described in claim 1, characterized in that, The triangular rope core comprises an aramid fiber core and multiple reinforcing steel wires wrapped around the outside of the aramid fiber core.
6. The high fatigue and high breaking strength lifting wire rope as described in claim 1, characterized in that, The filling layer is a hemp rope fiber filling layer.
7. The high fatigue and high breaking strength lifting wire rope as described in claim 1, characterized in that, The filler layer is impregnated with grease.
8. The high fatigue and high breaking strength lifting wire rope as described in claim 1, characterized in that, The outer compacted strand is surrounded by a corrosion-resistant layer and a wear-resistant layer from the inside out.