Marine round strand cable

Abstract

The utility model relates to the technical field of ship supplies. A marine round strand mooring rope comprises a rope body, and the rope body is formed by twisting and weaving at least eight strands of sub-rope bodies. Each sub-rope body comprises a round strand surface outer layer and a strand core which are arranged inside and outside; the strand core comprises at least four inner rope yarns which are arranged in parallel, and each inner rope yarn is formed by twisting four ultra-high molecular weight polyethylene split film fibers in a Z shape; the round strand surface outer layer is of a cylindrical structure formed by weaving at least 16 outer rope yarns, and each outer rope yarn is formed by twisting four ultra-high molecular weight polyethylene split film fibers in an S shape. According to the marine round strand cable, ultra-high molecular weight polyethylene split film fibers with good ultra-high strength, wear resistance and aging resistance are selected as a base material of the marine round strand cable, a round strand weaving method is adopted, and a cylindrical structure is formed after weaving forming; the strand core adopts the Z-shaped twisting direction rope yarns, and the different Z-shaped twisting direction rope yarns adopt a parallel structure, so that the strength utilization rate of the rope yarns and the comprehensive performance of the cable are greatly improved, and the novel round strand cable with high cost performance and excellent comprehensive performance is processed.

Description

Technical Field

[0001] The utility model relates to the technical field of ship supplies, in particular to a cable. Background Art

[0002] Cables are an important product widely used in the fields of ships, marine engineering, fishing gear, aquaculture facilities, etc. At present, cables mainly include polyethylene cables, polyamide cables, polypropylene cables, etc. The number of strands of cables is divided into three-strand ropes and eight-strand ropes. The strands of traditional cables mainly adopt twisted structure, not round strand structure.

[0003] Traditional cables are made of ordinary fiber rope yarn materials and braided structures to produce synthetic fiber twisted ropes. The cable strength is low and the surface of the rope strands is uneven.

[0004] How to improve the strength of the cable is a constant pursuit in cable development and design. Utility Model Content

[0005] In view of the problems existing in the prior art, the utility model provides a round strand cable for ships, which solves at least one of the above technical problems.

[0006] The technical solution of the utility model is: a round strand cable for ships, comprising a rope body, characterized in that the rope body is formed by twisting and braiding at least 8 strands of rope bodies;

[0007] The sub-rope body comprises an outer layer of round strand surfaces and a strand core arranged inside and outside;

[0008] The strand core is at least 4 inner rope yarns arranged in parallel, and the inner rope yarn is a Z-twisted rope yarn formed by Z-twisting four ultra-high molecular weight polyethylene film split fibers;

[0009] The outer layer of the round strand surface is a cylindrical structure woven from at least 16 outer rope yarns, and the outer rope yarn is an S-twisted rope yarn formed by S-twisting four ultra-high molecular weight polyethylene film split fibers.

[0010] The utility model uses ultra-high molecular weight polyethylene film split fiber with good ultra-high strength, wear resistance and aging resistance as the base material of the ship round strand cable, which is suitable for industries with seawater corrosion such as ships. The braiding structure is also an important factor affecting the mechanical properties and wear resistance of the cable. The braiding structure of the cable will be changed, which will further affect the mechanical properties and wear resistance of the cable. The sub-rope body of the utility model adopts a round strand braiding method, and a cylindrical structure is formed after braiding; the strand core adopts Z-type twist yarn, and a parallel structure is adopted between different Z-type twist yarns, which greatly improves the strength utilization rate of the ultra-high strength split film fiber rope yarn and the comprehensive performance of the cable, thereby processing a ship-use high cost-effective ultra-high strength round strand braided cable with high cost-effectiveness and excellent comprehensive performance.

[0011] Further preferably, the linear density of the ultra-high molecular weight polyethylene film split fiber is 4000D.

[0012] Further preferably, the twist of the S-twist rope yarn is greater than the twist of the Z-twist rope yarn.

[0013] Further preferably, the twist of the S-twist rope yarn is 16 twists / m to 187 twists / m.

[0014] Further preferably, the twist of the Z-twist rope yarn is 3 twists / m to 83 twists / m.

[0015] Further preferably, the twist of the S-twist rope yarn is 90 twists / m.

[0016] Further preferably, the twist of the Z-twist rope yarn is 28 twists / m.

[0017] Further preferably, the number of strands of the sub-rope body is 12 strands.

[0018] Further preferably, the twisting pitch of the sub-rope bodies is 38 mm to 560 mm.

[0019] Further preferably, the twisting pitch of the sub-cable body is 370 mm.

[0020] Further preferably, the core strands are 44 inner rope yarns arranged in parallel.

[0021] Further preferably, the nominal diameter of the rope body is 51 mm.

[0022] Beneficial effects: Compared with traditional 12-strand ordinary fiber rope yarn material cables (that is, nylon multifilament fiber cables), the utility model has a 16.8% higher breaking strength and a 16.3% lower cost per roll of cable. It has cost-effective advantages such as beautiful appearance (round strand structure), high breaking strength and low cost per roll of cable. The utility model is feasible for replacing traditional cables in industries such as fisheries, and its future industrial prospects are very broad. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a partial structural schematic diagram of the sub-rope body of the utility model;

[0024] Figure 2 It is a structural schematic diagram of the rope body of the utility model.

[0025] In the figure: 1 is a sub-rope body, 11 is a round strand surface outer layer, and 12 is a strand core. DETAILED DESCRIPTION

[0026] See also Figure 1 to Figure 2A round strand cable for ships comprises a rope body, wherein the rope body is formed by twisting and braiding 8 to 64 strands of sub-rope bodies 1. The twisting pitch of the sub-rope body 1 is 38 mm to 560 mm.

[0027] The sub-rope body 1 includes a circular strand surface outer layer 11 and a strand core 12 arranged inside and outside. The strand core 12 is 4 to 137 inner rope yarns arranged in parallel, and the inner rope yarn is a Z-twisted rope yarn formed by four ultra-high molecular weight polyethylene film split fibers with a linear density of 4000D. The twist of the Z-twisted rope yarn is 3 twists / m to 83 twists / m. The circular strand surface outer layer 11 is a cylindrical structure woven from 16 to 296 outer rope yarns, and the outer rope yarn is an S-twisted rope yarn formed by four ultra-high molecular weight polyethylene film split fibers with a linear density of 4000D. The twist of the S-twisted rope yarn is 16 twists / m to 187 twists / m.

[0028] The utility model selects ultra-high molecular weight polyethylene film split fiber with good ultra-high strength, wear resistance and aging resistance as the base material of the round strand cable for ships. The weaving structure is also an important factor affecting the mechanical properties and wear resistance of the cable. The weaving structure of the cable will be changed, which will further affect the mechanical properties and wear resistance of the cable. The sub-rope body 1 of the utility model adopts a round strand weaving method, and a cylindrical structure is formed after weaving; the strand core 12 adopts Z-type twist yarn, and a parallel structure is adopted between different Z-type twist yarns, which greatly improves the strength utilization rate of the ultra-high strength split film fiber rope yarn and the comprehensive performance of the cable, thereby processing a high cost-effective ultra-high strength round strand braided cable for ships with high cost-effectiveness and excellent comprehensive performance.

[0029] Specific embodiment 1 is a round strand cable for ships, comprising a rope body, wherein the rope body is formed by twisting and braiding 12 strands of sub-rope bodies 1. The twisting pitch of the sub-rope body 1 is 370 mm.

[0030] The sub-rope body 1 includes a circular strand surface outer layer 11 and a strand core 12 arranged inside and outside. The strand core 12 is 44 inner rope yarns arranged in parallel, and the inner rope yarn is a Z-twisted rope yarn formed by four ultra-high molecular weight polyethylene film split fibers with a linear density of 4000D and a Z-twisted rope yarn. The twist of the Z-twisted rope yarn is 28 twists / meter. The circular strand surface outer layer 11 is a cylindrical structure woven from 74 outer rope yarns, and the outer rope yarn is an S-twisted rope yarn formed by four ultra-high molecular weight polyethylene film split fibers with a linear density of 4000D and a S-twisted rope yarn. The twist of the S-twisted rope yarn is 90 twists / meter.

[0031] A cable with a nominal diameter of 51 mm is made. The specific preparation method is:

[0032] 1. Use polyethylene with a molecular weight range of 1 million to 9 million as a raw material to prepare ultra-high molecular weight polyethylene film split fiber with a linear density of 4000D. Ultra-high molecular weight polyethylene film split fiber is a commercially available product. For example, the ultra-high molecular weight polyethylene film split fiber sold by Zhengzhou COSCO Defense Materials Co., Ltd. can be selected.

[0033] 2. Rope yarn

[0034] Four ultra-high molecular weight polyethylene film split fibers with a linear density of 4000D are initially twisted at a twist of 90T / m (also known as 90 twists / m) into S-twisted rope yarns for round-ply surface processing. The above-mentioned S-twisted rope yarns are used for the processing and production of round-ply surfaces.

[0035] Four ultra-high molecular weight polyethylene film split fibers with a linear density of 4000D are initially twisted at a twist of 28 T / m (also known as 28 twists / m) to form Z-twisted rope yarns for processing the strand core 12. The above-mentioned Z-twisted rope yarns are used for processing and manufacturing the strand core 12.

[0036] 3. Stock Making

[0037] A round strand braiding machine is used to make round strands, and a total of 74 S-twisted yarns are used to make the round strand surface. The 74 S-twisted yarns are used to make the round strand surface, and the round strand surface is a round strand surface outer layer 11 of a cylindrical structure. While the round strand braiding machine is used to make the round strand surface, a strand core 12 is filled in the middle of the round strand surface, and a total of 44 Z-twisted yarns are used for the strand core 12. The 44 Z-twisted yarns are used to make the round strand braided cable strand core 12, and the 44 Z-twisted yarns inside the strand core 12 are arranged in parallel.

[0038] 4. Rope making

[0039] A twelve-strand braiding machine is used to braid 12 strands of 12 ropes at a pitch of 370 mm to produce a marine round strand cable with 12 strands.

[0040] Compared with the traditional 12-strand nylon multifilament fiber cable (nominal diameter 44mm), the 12-strand ship-use high-cost-effective ultra-high-strength round-strand braided cable (nominal diameter 51mm) with a nominal diameter of 51mm of the utility model has a 16.8% increase in breaking strength and a 16.3% reduction in the cost per roll of cable (the length of each roll of rope is calculated based on 220m).

[0041] The breaking strength index of the superior polyethylene monofilament for fishing in the industry standard SC / T5005-2014 is 6.3g / D. The breaking strength of the ultra-high molecular weight polyethylene film fiber with a linear density of 4000D is 34g / D to 40g / D, which is 4.4 times higher than that of the superior polyethylene monofilament for fishing.

[0042] The utility model (nominal diameter 51mm) has the advantages of cost performance such as beautiful appearance (round strand structure), high breaking strength, and low cost per roll of cable. It is feasible to replace the traditional ordinary fiber rope material cable (that is, nylon multifilament fiber cable) (nominal diameter 44mm) for industrial application in this technical field, and its industrial prospects in the future are very broad. In addition, it can also be used in the fields of fishery, transportation and civil use, and its industrial prospects in the future are also very broad.

[0043] Specific embodiment 2, based on specific embodiment 1, the connecting ropes are arranged at equal intervals in the length direction of the rope body. The connecting ropes pass through all the sub-rope bodies in sequence and are wound and fixed on the outer periphery of the rope body, which facilitates the length positioning of the rope body and prevents it from loosening.

[0044] The above are only preferred implementations of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A round strand cable for a ship, comprising a cable body, characterized in that: The rope body is formed by twisting and braiding at least 8 strands of rope bodies; The sub-rope body comprises an outer layer of round strand surfaces and a strand core arranged inside and outside; The strand core is at least 4 inner rope yarns arranged in parallel, and the inner rope yarn is a Z-twisted rope yarn formed by Z-twisting four ultra-high molecular weight polyethylene film split fibers; The outer layer of the round strand surface is a cylindrical structure woven from at least 16 outer rope yarns, and the outer rope yarn is an S-twisted rope yarn formed by S-twisting four ultra-high molecular weight polyethylene film split fibers.

2. A marine round strand cable according to claim 1, characterized in that: The twist of the S-twisted rope yarn is greater than the twist of the Z-twisted rope yarn.

3. A marine round strand cable according to claim 1, characterized in that: The twist of the S-twisted rope yarn is 16 twists / m to 187 twists / m.

4. A marine round strand cable according to claim 1, characterized in that: The twist of the Z-twisted rope yarn is 3 twists / m to 83 twists / m.

5. A marine round strand cable according to claim 3, characterized in that: The twist of the S-twisted rope yarn is 90 twists / m.

6. A marine round strand cable according to claim 4, characterized in that: The twist of the Z-twisted rope yarn is 28 twists / m.

7. A marine round strand cable according to claim 1, characterized in that: The number of strands of the sub-rope body is 12.

8. A marine round strand cable according to claim 1, characterized in that: The twisting pitch of the sub-rope body is 38mm to 560mm.

9. A marine round strand cable according to claim 8, characterized in that: The twisting pitch of the sub-rope body is 370 mm.

10. A round strand cable for ship according to claim 1, characterized in that: The strand core is 44 inner rope yarns arranged in parallel.

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