Necking structure of high-modulus chemical fiber cable and high-elasticity cable
By setting up a reinforced structure at the junction connection between high-modulus chemical fiber cables and high-elastic cables, the problems of bending and cutting damage at the connection are solved, and the strong proportion and cost reduction of the mooring system are achieved.
Patent Information
- Application Number
- CN202421836068.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-07-31
AI Technical Summary
In the prior art, high-modulus chemical fiber cables and high-elastic cables are prone to bending and cutting damage at the joints, resulting in weak links in the mooring system and the performance of the tail cable cannot be fully exerted, and the overall strong improvement will also increase costs.
By setting up a reinforcement structure at the connection between the main cable and the tail cable, the connection strength is enhanced, bending and cutting damage is reduced, the connection is achieved using a double-bonding structure, and the breaking tension is improved by locally thickening the eye ring diameter of the main cable or tail cable.
The system is strongly matched with 1:1 to achieve a strong system without attenuation, reducing cost investment, reducing cutting damage to the tail cable, and improving the overall strong efficiency of the mooring system.
Smart Images
Figure CN222973586U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cable splicing, and particularly relates to a splicing structure of a high-modulus chemical fiber cable and a high-elastic cable. Background Technique
[0002] Dock mooring is one of the most important and dangerous jobs for seafarers. The optimal and reasonable use of cables is crucial for the mooring safety of ships. As the most widely used high-performance cable material in the shipping industry, HMPE fiber has unique advantages such as high strength, light weight, good abrasion resistance, and good fatigue resistance, which can provide a safer and more efficient mooring operation environment for seafarers.
[0003] It should be noted that the breaking elongation rate of HMPE cables is about 3%, which can effectively reduce the offset of the ship. However, when encountering harsh mooring environments (such as wind waves, surges, and tides) or loading and unloading operations, the floating of the hull is likely to cause the mooring system to be overloaded, damaging the HMPE cables. Moreover, frequent or long-term overload is more likely to cause accidental breakage of the HMPE cables.
[0004] In order to improve the strength of the mooring cable, a tail cable is often added on the basis of the existing technology, so that the mooring cable is divided into a main cable and a tail cable. Generally, the main cable often uses a high-modulus chemical fiber cable, and the tail cable uses a high-elastic cable. The high-elastic cable helps to reduce the damage caused by impact loads to the main cable, and is also beneficial for the mooring system to resist harsh sea conditions. If the mooring system is subjected to a large impact, the tail cable can effectively limit the dynamic peak load on the entire mooring system through length changes, ensuring the installation of the entire mooring system. In the process of connecting the existing main cable and tail cable, a double hitch is often used to achieve the connection. However, when using this connection form, there will be bending and cutting damage between the small-diameter high-modulus cable and the large-diameter high-elastic tail cable. The weak link of the entire mooring system is on the tail cable at the splicing position.
[0005] In order to ensure the strength of the entire mooring system, the current method is to increase the strength of the tail cable to 1.25 - 1.30 times the breaking tensile force of the main cable. However, when using this method, the performance of the tail cable cannot be fully exerted, and the overall strength improvement will also increase the cost. A solution is proposed for the above problems. Content of the Utility Model
[0006] The purpose of the utility model is to provide a splicing structure of a high-modulus chemical fiber cable and a high-elastic cable, which strengthens the protection of the connection between the tail cable and the main cable, thereby reducing the bending and cutting damage to the tail cable, without the need to improve the overall strength of the tail cable, realizing that when the strength ratio of the main cable and the tail cable is 1:1, the strength of the system does not decay, reducing the cost investment and facilitating operation.
[0007] The above technical objectives of the present utility model are achieved through the following technical solutions:
[0008] A splicing structure of a high-modulus chemical fiber cable and a high-elastic cable, including a main cable and a tail cable. Both the main cable and the tail cable are made of a plurality of strands. The main cable and the tail cable are connected by a double-splicing structure. The diameter of the tail cable is greater than that of the main cable. The main cable is made of a high-modulus chemical fiber cable, and the tail cable is made of a high-elastic cable. An enhanced structure for enhancing the connection strength is provided between the main cable and the tail cable.
[0009] Preferably, the enhanced structure can be provided on the main cable. The enhanced structure is provided at the connection of the main cable and the tail cable. The diameter of the main cable is made the same as that of the tail cable through the enhanced structure.
[0010] Preferably, the enhanced structure can be provided on the tail cable. The enhanced structure is provided at the connection of the main cable and the tail cable. The diameter of the tail cable is thickened to 1.2 to 1.8 times the original diameter of the tail cable through the enhanced structure.
[0011] Preferably, the enhanced structure can adopt any one or several of a canvas sheath, a thin rope winding, or a double-braided sheath structure.
[0012] Preferably, the high-modulus chemical fiber cable can adopt any one of high-modulus polyethylene (HMPE) fibers, aramid fibers, or polyarylate fibers.
[0013] Preferably, the tail cable can be a single-leg tail cable.
[0014] Preferably, the high-elastic cable can adopt any one of polyamide fibers, polyester fibers, or polyester-polyolefin bicomponent fibers.
[0015] Beneficial effects: By the main cable and the tail cable, a mooring cable is formed. The use of the high-elastic tail cable helps to reduce the damage of the impact load to the high-modulus chemical fiber main cable, and is also beneficial for the mooring system to withstand harsh sea conditions. The main cable and the tail cable are cooperated together in the form of a double splice. By adopting two different splicing structures, the breaking tensile force of the tail cable is improved, so that it is not necessary to increase the breaking tensile force of the whole tail cable as in the prior art. Local improvement can meet the requirements, reducing the cost investment. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic structural diagram of Embodiment 1;
[0017] Figure 2 It is a schematic structural diagram of Embodiment 2;
[0018] Figure 3 It is a schematic structural diagram of the embodiment for showing the tail cable.
[0019] Reference numerals: 1, main cable; 2, tail cable; 3, reinforcement structure. Detailed implementation mode
[0020] See Figure 1 and 3 As shown, both the main cable 1 and the tail cable 2 are made of a number of strands. The main cable 1 and the tail cable 2 are connected by a double sheet bend structure. The diameter of the tail cable 2 is larger than that of the main cable 1. The main cable 1 is made of a high modulus chemical fiber cable, and the tail cable 2 is made of a high elastic cable. The mooring cable is composed of the main cable 1 and the tail cable 2. The high modulus chemical fiber cable can be any one of high modulus polyethylene (HMPE) fiber, aramid fiber or polyarylate fiber. The high modulus chemical fiber cable has the unique advantages of high strength, light weight, good wear resistance and good fatigue resistance, which can provide a safer and more efficient mooring operation environment for the crew. The high elastic cable can be any one of polyamide fiber, polyester fiber or polyester polyolefin bicomponent fiber. The use of the high elastic tail cable 2 helps to reduce the damage of the impact load to the high modulus chemical fiber main cable 1, and is also beneficial for the mooring system to resist bad sea conditions. The tail cable 2 can be a single-leg tail cable 2.
[0021] In Embodiment 1,
[0022] There is a reinforcement structure 3 for enhancing the connection strength between the main cable 1 and the tail cable 2. The reinforcement structure 3 can be arranged on the main cable 1. The reinforcement structure 3 is arranged at the connection of the main cable 1 and the tail cable 2. The diameter of the main cable 1 is the same as that of the tail cable 2 through the reinforcement structure 3. The reinforcement structure 3 can adopt any one of a canvas sheath, a thin rope winding or a complex braided sheath structure. The diameter of the main cable 1 is thickened through the reinforcement structure 3. By thickening the diameter of the main cable 1 to be at least the same as that of the tail cable 2, the cutting damage of the main cable 1 to the tail cable 2 can be reduced, thus ensuring the strength efficiency of the whole mooring system. Moreover, by adopting the form of thickening the main cable 1, the breaking tensile force of the high elastic tail cable 2 can be reduced to a certain extent.
[0023] Based on this, we propose to thicken the eye loop diameter of the main cable to reduce the cutting damage to the high elastic tail cable. The specific scheme is as follows: The eye loop connecting the HMPE main cable and the high elastic tail cable is thickened by an orange canvas sheath, and then protected by winding with a 5mm three-strand nylon rope. The eye loop diameter of the thickened main cable is increased from the original 26mm to 60mm.
[0024] Table 1 summarizes the combined cable strength of the HMPE cable and the blended cable after adopting the reinforced double sheet bend connection form. From the test results, the combined cables did not break at the double sheet bend position, but broke at the position with relatively weak strength in the main cable or the tail cable. This shows that this connection form can effectively reduce the cutting damage of the HMPE cable to the tail cable, thus ensuring the strength of the whole system.
[0025] Table 1 Initial Tensile Strength Test of Composite Cable System
[0026]
[0027] a) From the test results, adopting the method of locally thickening the main cable eye loop can reduce the cutting damage of the HMPE cable to the elastic tail cable, ensuring the tensile strength efficiency of the entire mooring system.
[0028] b) On the premise of meeting the tensile strength efficiency of the mooring system, adopting the form of thickening the main cable eye loop can reduce the breaking tensile force of the high-elastic tail cable to a certain extent.
[0029] Example 2:
[0030] See Figure 2 and 3 As shown, an enhanced structure 3 for enhancing the connection strength is provided between the main cable 1 and the tail cable 2. The enhanced structure 3 can be provided on the tail cable 2 and is arranged at the connection between the main cable 1 and the tail cable 2. The diameter of the tail cable 2 is thickened to 1.2 to 1.8 times the original diameter of the tail cable 2 through the enhanced structure 3. The enhanced structure 3 can adopt any one of a canvas sheath, a thin string winding, or a braided sheath. By thickening the eye loop diameter of the tail cable 2 through the enhanced structure 3, the strength of the connection eye loop between the tail cable 2 and the main cable 1 is improved, which is more conducive to the use of the tail cable 2.
Claims
1. A knot structure of a high modulus fiber-optic cable and a high elastic cable, comprising a main cable (1) and a tail cable (2), characterized in that: The main cable (1) and the tail cable (2) are both made of a plurality of rope strands, the main cable (1) and the tail cable (2) are connected by a double knot structure, the diameter of the tail cable (2) is larger than the diameter of the main cable (1), the main cable (1) adopts a high-modulus fiber-optic cable, the tail cable (2) adopts a high-elasticity cable, and a reinforcement structure (3) for enhancing the connection strength is provided between the main cable (1) and the tail cable (2).
2. A knot structure of a high modulus fiber cable and a high elastic cable according to claim 1, characterized in that: The reinforcing structure (3) can be arranged on the main cable (1), and the reinforcing structure (3) is arranged at the connection between the main cable (1) and the tail cable (2). The diameter of the main cable (1) is the same as that of the tail cable (2) through the reinforcing structure (3).
3. The knot structure of a high modulus fiber-optic cable and a high elastic cable according to claim 1, characterized in that: The reinforcement structure (3) can be arranged on the tail cable (2). The reinforcement structure (3) is arranged at the connection between the main cable (1) and the tail cable (2). The diameter of the tail cable (2) is thickened by the reinforcement structure (3) to 1.2 to 1.8 times the original diameter of the tail cable (2).
4. A knot structure of a high modulus fiber-optic cable and a high elastic cable according to any one of claims 2 or 3, characterized in that: The reinforcement structure (3) may be any one or more structures of a canvas sheath, a twined string, or a composite sheath.
5. The knot structure of a high modulus fiber-optic cable and a high elastic cable according to claim 1, characterized in that: The high modulus fiber-optic cable may be made of any one of high modulus polyethylene (HMPE) fiber, aramid fiber or polyarylate fiber.
6. The knot structure of a high modulus fiber-optic cable and a high elastic cable according to claim 1, characterized in that: The tail cable (2) may be a single-leg tail cable (2).
7. A knot structure of a high modulus fiber-optic cable and a high elastic cable according to claim 6, characterized in that: The high elastic cable can be made of any one of polyamide fiber, polyester fiber or polyester polyolefin double fiber.