Bending fatigue resistant cable

Abstract

The utility model discloses a bending fatigue resistant mooring rope, which relates to the technical field of mooring ropes, and comprises a mooring rope body, the mooring rope body comprises a plurality of sub-ropes, the mooring rope body is formed by weaving a plurality of strands of sub-ropes, a wear-resistant layer is arranged outside the mooring rope body, the sub-ropes comprise a plurality of ultra-high molecular weight polyethylene fibers, and the ultra-high molecular weight polyethylene fibers are arranged on the outer side of the mooring rope body. The sub-rope is formed by weaving a plurality of ultra-high molecular weight polyethylene fibers, and an oiling agent layer is arranged outside the ultra-high molecular weight polyethylene fibers, so that the problem that the temperature rises due to the fact that friction generated between yarns of a bent section of an existing mooring rope is large, and the rope is not prone to falling off can be effectively solved. The strength loss of the ultra-high molecular weight polyethylene fiber under the condition of high temperature is relatively large.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a cable resistant to bending fatigue. Background Art

[0002] In the application field of cranes, traditional wire ropes often face problems such as low payload, insufficient strength, poor bending resistance, short life, and high maintenance costs, which to a certain extent limit the performance and efficiency of cranes during operation.

[0003] High-performance chemical fiber cables are characterized by light weight, easy operation and low maintenance costs.

[0004] Compared to steel wire ropes, conventional ultra-high molecular weight polyethylene (UHMWPE) cables suffer from poor abrasion resistance, UV resistance, and deformation when squeezed. During use, UHMWPE fibers experience significant strength loss at high temperatures due to increased friction between yarns in the cable's curved sections. Therefore, it is necessary to develop UHMWPE cables that are resistant to bending fatigue. The following proposes a solution to these problems. Utility Model Content

[0005] The purpose of the utility model is to provide a cable resistant to bending fatigue, which solves the problems raised by the above background technology.

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

[0007] A bending fatigue-resistant cable comprises a cable body, wherein the cable body comprises a plurality of sub-ropes, the cable body being woven from a plurality of sub-ropes, the cable body being provided with a wear-resistant layer on the outside, the sub-ropes comprising a plurality of ultra-high molecular weight polyethylene fibers, the sub-ropes being woven from a plurality of ultra-high molecular weight polyethylene fibers, and the ultra-high molecular weight polyethylene fibers being provided with an oil layer on the outside.

[0008] Preferably, the oil layer accounts for 3-5% of the mass of the cable body.

[0009] Preferably, the oil is a chemical fiber oil.

[0010] Preferably, the wear-resistant layer accounts for 13-17% of the mass of the cable body.

[0011] Preferably, the wear-resistant layer is made of water-based polyurethane, lubricant and water, and the mass ratio of the water-based polyurethane, lubricant and water is 1:0.1:2.

[0012] Preferably, the linear density of the cable body is 57 g / m, and the lay length of the cable body is 85 mm.

[0013] Preferably, the sub-rope is a 3-strand structure, and the cable body is a 12-strand structure.

[0014] Beneficial effects: By coating the ultra-high molecular weight polyethylene fibers with oil, the friction between the yarns when the cable is bent can be reduced, thereby reducing the problem of large strength loss of ultra-high molecular weight polyethylene fibers under high temperature conditions due to the increased friction between the yarns in the bending section of the cable and the increase in temperature. By coating the outside of the cable body with a wear-resistant layer, the wear-resistant and UV-resistant properties of the ultra-high molecular weight polyethylene cable can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of an embodiment;

[0016] Figure 2 The figure is a schematic diagram of the cross-sectional structure of the embodiment for showing the sub-rope.

[0017] Figure numerals: 1. cable body; 2. sub-rope; 3. wear-resistant layer; 4. ultra-high molecular weight polyethylene fiber; 5. oil layer. DETAILED DESCRIPTION

[0018] See Figures 1 to 2 As shown, a bending fatigue-resistant cable includes a cable body, characterized in that the cable body includes a plurality of sub-ropes, the cable body is woven by multiple sub-ropes, the sub-rope adopts a 3-strand structure, and the sub-rope is woven into a 3×12-strand structure of the cable body, the linear density of the cable body is 57g / m, and the braiding pitch of the cable body is 85mm.

[0019] The outside of the cable body is provided with a wear-resistant layer, which accounts for 15% of the mass of the cable body. The wear-resistant layer adopts water-based polyurethane, lubricant and water, and the mass ratio of water-based polyurethane, lubricant and water is 1:0.1:2. By coating the wear-resistant layer on the outside of the cable body, the wear-resistant and UV-resistant performance of the ultra-high molecular weight polyethylene cable can be improved.

[0020] The sub-rope includes several ultra-high molecular weight polyethylene fibers, which are woven together. An oil layer is provided on the outside of the ultra-high molecular weight polyethylene fibers, and the oil layer accounts for 3% of the mass of the cable body. The oil agent uses chemical fiber oil. By coating the ultra-high molecular weight polyethylene fibers with oil, the friction between the yarns when the cable is bent can be reduced, thereby reducing the problem of greater strength loss of ultra-high molecular weight polyethylene fibers under high temperature conditions due to the increased friction between the yarns in the bending section of the cable and the increase in temperature.

[0021]

[0022]

[0023] Conclusion: For cables of the same diameter, 3-strand cables offer the best bending fatigue resistance, but they have low strength and can twist during use, resulting in strength loss. 8-strand and 12-strand cables, while strong, have poor bending fatigue resistance. 3x12-strand cables do not twist during use, have similar strength to 8-strand and 12-strand cables, and offer nearly the same bending fatigue resistance as 3-strand cables. Therefore, after comparative experiments, we selected the optimal 3x12-strand cable for use. Furthermore, cables recoated with oil also exhibit superior performance compared to uncoated cables.

Claims

1. A bending fatigue resistant cable, comprising a cable body, characterized in that: The cable body includes several sub-ropes, which are woven from multiple strands of sub-ropes. A wear-resistant layer is provided on the outside of the cable body. The sub-ropes include several ultra-high molecular weight polyethylene fibers, which are woven from multiple ultra-high molecular weight polyethylene fibers. An oil layer is provided on the outside of the ultra-high molecular weight polyethylene fibers.

2. A bending fatigue resistant cable according to claim 1, characterized in that: The oil layer accounts for 3-5% of the mass of the cable body.

3. A bending fatigue resistant cable according to claim 2, characterized in that: The oiling agent is a chemical fiber oiling agent.

4. The bending fatigue resistant cable according to claim 1, characterized in that: The wear-resistant layer accounts for 13-17% of the mass of the cable body.

5. The bending fatigue resistant cable according to claim 1, characterized in that: The linear density of the cable body is 57 g / m, and the lay length of the cable body is 85 mm.

6. The bending fatigue resistant cable according to claim 1, characterized in that: The sub-rope has a 3-strand structure, and the cable body has a 12-strand structure.

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