High-elasticity and high-strength mooring device suitable for shallow sea and large tidal range

Abstract

The invention discloses a high-elasticity and high-strength mooring device suitable for shallow sea and large tidal range, the high-elasticity and high-strength mooring device is of a composite structure formed by compounding a first mooring rope component and a second mooring rope component, the first mooring rope component comprises a first mooring rope body formed by weaving rubber threads or latex threads, and the second mooring rope component comprises a second mooring rope body formed by weaving rubber threads or latex threads; two ends of the first cable body are respectively knitted to form two first eye rings; the elastic elongation of the first cable part is greater than or equal to 100%; the second mooring rope part comprises a second mooring rope body formed by weaving aramid fibers, ultra-high molecular weight polyethylene, polyester or chinlon, and the two ends of the second mooring rope body are respectively knitted to form two second eye rings; the first cable part and the second cable part are connected and compounded through the first eye ring and the second eye ring; the elastic elongation of the first cable part is larger than that of the second cable part, and the tensile strength of the second cable part is larger than that of the first cable part.

Description

Technical Field

[0001] The invention belongs to the technical field of offshore facilities, in particular to the technical field of mooring cables, and specifically relates to a high-elasticity and high-strength mooring device suitable for shallow seas with large tidal ranges. Background Art

[0002] In the marine environment, offshore facilities and platforms will experience significant relative movement due to factors such as wind, waves, and currents. This phenomenon is particularly prominent in offshore areas, where the tidal range is large, the environmental conditions are complex, and the mooring radius of the mooring line is limited. The elastic elongation capacity of traditional mooring lines is difficult to adapt to these harsh conditions. Therefore, there is an urgent need for a new type of composite mooring line, which not only needs to have high strength and large elastic elongation to ensure the safety of facilities under large tidal range and large displacement conditions, but also should be able to continuously withstand external forces and quickly return to the predetermined position, thereby ensuring the stability and reliability of offshore structures. Summary of the invention

[0003] In view of this, some embodiments disclose a high-elasticity and high-strength mooring device suitable for shallow sea with large tidal range. The high-elasticity and high-strength mooring device is a composite structure formed by a first cable component and a second cable component, wherein:

[0004] The first cable component comprises a first cable body woven from rubber threads or latex threads, and two ends of the first cable body are respectively woven into two first eye rings; the elastic elongation of the first cable component is ≥100%;

[0005] The second cable component comprises a second cable body woven from aramid, ultra-high molecular weight polyethylene, polyester or nylon, and two ends of the second cable body are respectively woven into two second eye rings;

[0006] The first cable component and the second cable component are connected and compounded through the first eyelet and the second eyelet; the elastic elongation of the first cable component is greater than the elastic elongation of the second cable component, and the tensile strength of the second cable component is greater than the tensile strength of the first cable component.

[0007] Some embodiments disclose a high-elasticity and high-strength mooring device suitable for shallow sea large tidal range, wherein one of the first eyelets of the first cable component is connected to one of the second eyelets of the second cable component; the breaking strength of the first cable component is the same as the breaking strength of the entire high-elasticity and high-strength mooring device.

[0008] Some embodiments disclose a high-elasticity and high-strength mooring device suitable for shallow sea large tidal range, wherein the two first eyelets of the first cable component are respectively connected to the two second eyelets of the second cable component; the initial length of the second cable component is greater than or equal to 1.5 times the initial length of the first cable component, and the breaking strength of the first cable component is greater than or equal to 20% of the breaking strength of the entire high-elasticity and high-strength mooring device.

[0009] Some embodiments disclose a high-elasticity and high-strength mooring device suitable for shallow sea large tidal range, wherein two first eyelets of a first cable component are respectively connected to two second eyelets of a second cable component, and the second cable component is spirally wound on the first cable component; the breaking strength of the first cable component is greater than or equal to 20% of the breaking strength of the entire high-elasticity and high-strength mooring device.

[0010] In some embodiments of the high-elasticity and high-strength mooring device suitable for shallow sea with large tidal range, the first cable component is a braided structure of 8 strands, 12 strands or 16 strands.

[0011] In some embodiments of the high-elasticity and high-strength mooring device suitable for shallow sea and large tidal range, the outer surface of the first cable component is covered with a wear-resistant sheath.

[0012] Some embodiments disclose a high-elasticity and high-strength mooring device suitable for shallow sea large tidal range, wherein a plurality of first cable components are provided, and a plurality of second cable components are provided, wherein at least one first eyelet of the first cable component is connected and compounded with at least one second eyelet of the second cable component.

[0013] The high-elasticity and high-strength mooring device suitable for shallow sea with large tidal range disclosed in an embodiment of the present invention comprises a first cable component and a second cable component which are combined to form a composite structure. The first cable component provides high elastic elongation, and the second cable component provides strength. This solves the defect that only relying on the elasticity provided by the rubber body cannot provide large-tonnage mooring force for large offshore facilities. It also solves the problem that in large tidal range and large displacement scenarios, the mooring cable is severely loosened or excessively stressed and damages the buoy due to damage caused by relying solely on the mooring cable. It also solves the problem that traditional rubber elastic ropes cannot be woven into eyes. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Example 1: Structural schematic diagram of a high-elasticity and high-strength mooring device;

[0015] Figure 2 Example 1: Schematic diagram of the force of a high elasticity and high strength mooring device;

[0016] Figure 3 Schematic diagram of the structure of a high elasticity and high strength mooring device in Example 2;

[0017] Figure 4 Schematic diagram of the force of the high elasticity and high strength mooring device of Example 2;

[0018] Figure 5 Schematic diagram of the structure of a high elasticity and high strength mooring device in Example 3;

[0019] Figure 6 Schematic diagram of the force of the high elasticity and high strength mooring device of Example 3;

[0020] Figure 7 Example 4: Force-displacement curve diagram of the first cable component during mechanical property test;

[0021] Figure 8 Example 5: Structural schematic diagram of a high elasticity and high strength mooring device;

[0022] Fig. 9 Schematic diagram of the structure of a high elasticity and high strength mooring device in Example 6;

[0023] Fig.10 Schematic diagram of the structure of a high elasticity and high strength mooring device in Example 7;

[0024] Fig.11 Schematic diagram of the structure of the high elasticity and high strength mooring device of Example 8.

[0025] Reference numerals

[0026] 1 first cable member 2 second cable member DETAILED DESCRIPTION

[0027] The word "embodiment" used here as an "exemplary" does not necessarily mean that any embodiment described is superior to or better than other embodiments. Unless otherwise specified, the performance index tests in the embodiments of this application are performed using conventional test methods in the art. It should be understood that the terms described in this application are only used to describe specific implementation methods and are not used to limit the content disclosed in this application.

[0028] Unless otherwise specified, the technical and scientific terms used in this document have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs; other experimental methods and technical means not specifically specified in this application refer to experimental methods and technical means commonly used by ordinary technicians in this field.

[0029] The terms "substantially" and "approximately" used herein are used to describe small fluctuations. For example, they can refer to less than or equal to ±5%, such as less than or equal to ±2%, such as less than or equal to ±1%, such as less than or equal to ±0.5%, such as less than or equal to ±0.2%, such as less than or equal to ±0.1%, such as less than or equal to ±0.05%. The numerical data represented or presented in the range format herein are used only for convenience and brevity, and should therefore be flexibly interpreted as including not only the values ​​clearly listed as the limits of the range, but also all independent values ​​or sub-ranges contained in the range. For example, the numerical range of "1-5%" should be interpreted as including not only the clearly listed values ​​of 1% to 5%, but also the independent values ​​and sub-ranges within the range shown. Therefore, independent values ​​such as 2%, 3.5% and 4% and sub-ranges such as 1%-3%, 2%-4% and 3%-5% are included in this numerical range. This principle also applies to the range of only one numerical value. In addition, such an interpretation applies regardless of the width of the range or the characteristics described.

[0030] In this document, including in the claims, transitional words such as "comprises," "includes," "with," "having," "containing," "involving," "accommodating," etc. are understood to be open-ended, i.e., meaning "including but not limited to." Only the transitional words "consisting of" and "composed of" are closed transitional words.

[0031] In order to better illustrate the content of the present application, numerous specific details are provided in the specific examples below. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In the embodiments, some methods, means, instruments, equipment, etc. well known to those skilled in the art are not described in detail in order to highlight the main purpose of the present application.

[0032] Under the premise of no conflict, the technical features disclosed in the embodiments of the present application can be arbitrarily combined, and the obtained technical solutions belong to the contents disclosed in the embodiments of the present application. It should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like mentioned in the present application indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the technical features and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention, unless it conflicts with the context. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance, unless it conflicts with the context.

[0033] In some embodiments, the high elasticity and high strength mooring device suitable for shallow sea with large tidal range is a composite structure formed by a first cable component and a second cable component, wherein:

[0034] The first cable component comprises a first cable body woven from rubber or latex yarns, and two ends of the first cable body are respectively braided to form two first eye rings; the elastic elongation of the first cable component is ≥100%; the first cable component is a braided structure of 8, 12 or 16 strands; the first cable component is a rope with a braided structure of 8, 12 or 16 strands, which is made of thin braided ropes with rubber or latex yarns as parallel cores as strands, and then braided into ropes with 8, 12 or 16 strands, and the two ends of the rope are braided to form first eye rings by braiding and plugging.

[0035] The second cable component includes a second cable body woven from aramid, ultra-high molecular weight polyethylene, polyester or nylon, two ends of the second cable body are respectively braided to form two second eye rings, and the two ends of the rope are formed into second eye rings by braiding and plugging;

[0036] The first cable component and the second cable component are connected and compounded through the first eyelet and the second eyelet; the elastic elongation of the first cable component is greater than the elastic elongation of the second cable component, and the tensile strength of the second cable component is greater than the tensile strength of the first cable component.

[0037] In some embodiments, one of the first eyelets of the first cable component is connected to one of the second eyelets of the second cable component, so that the first cable component and the second cable component form a series structure; the breaking strength of the first cable component is the same as the breaking strength of the entire high-elasticity and high-strength mooring device, and is suitable for mooring systems within 50 tons. The first cable component provides high elastic elongation, and the second cable component provides a certain strength. Within a certain range, according to the water depth and the displacement amplitude of the offshore facility, the length ratio of the first cable component is changed, thereby adjusting the overall elongation of the high-elasticity and high-strength mooring device.

[0038] In some embodiments, the two first eyelets of the first cable component are respectively connected to the two second eyelets of the second cable component, so that the first cable component and the second cable component form a parallel structure; the initial length of the second cable component is greater than or equal to 1.5 times the initial length of the first cable component, and the breaking strength of the first cable component is greater than or equal to 20% of the breaking strength of the entire high elastic high strength mooring device, which is suitable for mooring systems greater than 50 tons. The first cable component provides high elastic elongation, and the second cable component provides strength after predetermined elongation; as the load increases, the first cable component continues to elongate, and when the length of the first cable component after elongation is equal to the initial length of the second cable component, the second cable component begins to bear force. Since the elastic elongation rate of the second cable component is less than the elastic elongation rate of the first cable component, the second cable component bears the main tensile force at this time.

[0039] In some embodiments, the two first eyelets of the first cable component are respectively connected to the two second eyelets of the second cable component, and the second cable component is spirally wound on the first cable component, so that the first cable component and the second cable component form a spirally wound structure; the breaking strength of the first cable component is greater than or equal to 20% of the breaking strength of the entire high-elasticity and high-strength mooring device, and is suitable for mooring systems greater than 50 tons. The overall elongation of the high-elasticity and high-strength mooring device is adjusted by changing the size of the spiral winding pitch, and the second cable component provides a predetermined strength after elongation. The smaller the spiral winding pitch, the longer the length of the wound second cable component, the greater the elongation of the first cable component, and the greater the elongation of the mooring device as a whole.

[0040] In some embodiments, the outer surface of the first cable component is coated with a wear-resistant sheath; typically, the wear-resistant sheath is an anti-particle barrier wear-resistant sheath.

[0041] In some embodiments, the first cable component and the second cable component are connected in series, in parallel, or in spiral winding.

[0042] In some embodiments, a plurality of first cable components are provided, and a plurality of second cable components are provided, wherein at least one first eyelet of the first cable component is connected to at least one second eyelet of the second cable component.

[0043] In some embodiments, the overall breaking strength of the high-elasticity and high-strength mooring device is designed first, and then the elastic elongation required under a certain load is designed. The elastic elongation needs to be designed according to the displacement of the floating body. When the first cable component and the second cable component are in a series structure, the breaking strength of the first cable component needs to reach 100% of the breaking strength of the entire mooring device; when the first cable component and the second cable component are in a parallel structure and a spirally wound structure, the breaking strength of the first cable component must at least reach 20% of the breaking strength of the entire mooring device. Before reaching a predetermined elongation, the buoyant mooring force comes from the first cable component. After exceeding the predetermined elongation, the mooring force comes from the second cable component.

[0044] The technical details are further illustrated below in conjunction with embodiments.

[0045] Example 1

[0046] Figure 1 It is a schematic structural diagram of the high elasticity and high strength mooring device disclosed in Example 1; Figure 2 This is a force diagram of the high-elasticity and high-strength mooring device disclosed in Example 1.

[0047] like Figure 1As shown, the high elasticity and high strength mooring device comprises a first cable component 1, and a second cable component 2 connected to the right eye ring of the first cable component 1, and the first cable component 1 and the second cable component 2 are in series structure.

[0048] The high-elasticity and high-strength mooring device disclosed in Example 1 has a maximum working load of 1 t and an overall length of 40 meters in a natural state. When the maximum working load of 1 t is reached, the elastic elongation is 20 meters.

[0049] The preparation process of the high elasticity and high strength mooring device disclosed in Example 1 is as follows:

[0050] The ultimate working load of the high elastic high strength mooring device is 1 t, and it is designed with a safety factor of 5, so the breaking strength of the first cable component and the second cable component is 5 t;

[0051] The diameter and linear density of the first cable component and the second cable component are designed according to the breaking strength of the first cable component and the second cable component. The usual design method includes: the strength utilization rate of the known cable is 50% to 70%, the type and strength of the fiber are selected, the breaking strength of the cable is calculated according to the utilization rate, the unit is kg / tex, and the corresponding linear density is determined according to the required tension (in kg); the diameter is usually calculated according to the relationship between the linear density and the diameter, the formula is linear density / D 2 =K, D is the rope diameter, K is a constant, when the material is polyester, K is 0.76, when the material is nylon, K = 0.625, when the material is HMPE, K = 0.67, when the material is aramid, K = 0.8, the diameter of the cable is calculated by the formula; according to the formula L A +L B =40, L A × elongation = 20, calculate the length of the first cable component and the second cable component; where L A is the length of the first cable component, L B is the length of the second cable component, and the elongation is the elongation of the first cable component under a load of 1 t; a plurality of composite rubber filaments are fed in parallel, a layer of polyester rope skin is braided outside the rubber filaments to obtain a rubber string, and the rubber string is used as a rope strand to braid into a 12-strand braided structure to obtain a first cable component; the elongation of the first cable component under a load of 1 t is obtained by testing the elongation of the first cable component at 10%, 20%, 30%, 40%, and 50% of the breaking strength using a tensile machine;

[0052] A second cable component is obtained by taking a plurality of ultra-high molecular weight polyethylene multifilaments and subjecting them to twisting, stranding, braiding and other processes;

[0053] Production steps:

[0054] Step 1, select high-strength tow polyester fiber, the fiber specification is 1000D, the strength requirement is not less than 7g / D, and pre-weave 6-in-1 polyester yarn into a designated yarn tube for standby use;

[0055] Step 2, feeding the latex yarn into the braiding machine evenly through the wire divider, running the braiding machine, and making elastic sub-rope as rope strands for standby use, with a line density of 285g / m;

[0056] The elastic sub-rope is pre-woven onto the spindle as a rope strand, and then the spindle is installed on the braiding machine, the braiding machine is operated, and the rope pitch size is adjusted to ensure that the pitch multiple is 8 times the diameter to obtain the first cable component. The elongation of the first cable component at 10%, 20%, 30%, 40%, and 50% of the breaking strength is tested by a tensile machine to obtain the elongation under a load of 1 t.

[0057] Select 1600D ultra-high molecular weight polyethylene multifilament with a strength requirement of not less than 32g / D. Take 16 pairs of ultra-high molecular weight polyethylene multifilaments and twist them through an imported twisting machine to obtain rope strands with a twist of 25 twists / m. Pre-weave the rope strands onto spindles, and then install the spindles onto a braiding machine. Run the braiding machine, adjust the rope pitch to ensure that the pitch multiple is 8 times the diameter, and obtain the second cable component with a line density of 40g / m.

[0058] The high elasticity and high strength mooring device disclosed in Example 1 is obtained by connecting the first cable component and the second cable component in series. Figure 2 The figure is a force diagram of the high elasticity and high strength mooring device disclosed in Example 1. The series structure is provided with high elasticity elongation by the first cable component, and a certain strength by the second cable component. As the working load increases, the bearing force of the first cable component and the second cable component is the same due to the series structure, but the displacement of the first cable component and the second cable component is different. The first cable component provides the main elongation, such as Figure 2 As shown at point A, the first cable component is a highly elastic rope body, so its displacement increases rapidly as the load increases, and the second cable component is a strong component, so its displacement increases slowly as the load increases.

[0059] Example 2

[0060] Figure 3 It is a schematic structural diagram of the high elasticity and high strength mooring device disclosed in Example 2; Figure 4 This is a force diagram of the high-elasticity and high-strength mooring device disclosed in Example 2.

[0061] like Figure 3 As shown, the high elasticity and high strength mooring device comprises a first cable component 1, and a second cable component 2 whose eyelets at both ends are respectively connected to the eyelets at both ends of the first cable component 1, and the first cable component 1 and the second cable component 2 are in a parallel structure.

[0062] The ultimate working load of the high-elasticity and high-strength mooring device disclosed in Example 2 is 12 tons, and the overall length in the natural state is 20 meters, that is, the length of the first cable component is 20 meters.

[0063] The preparation process of the high elasticity and high strength mooring device disclosed in Example 2 is as follows:

[0064] The ultimate working load of the high elastic high strength mooring device is 12t. It is designed with a safety factor of 5. The breaking strength of the first cable component is at least 12t, and the breaking strength of the second cable component is 60t.

[0065] The diameter and linear density of the first cable component and the second cable component are designed according to the breaking strength of the first cable component and the second cable component; according to the formula 1.5×L A <L B <L A ×(1+elongation), and then calculate the length of the second cable component according to the maximum displacement of the floating body and the mechanical properties of the floating body; where L A is the length of the first cable component, L B is the length of the second cable component, and the elongation is the elongation of the first cable component at 20% of the breaking strength;

[0066] Feeding a plurality of composite rubber threads in parallel, weaving a layer of polyester rope skin on the outside of the rubber threads to obtain a rubber string, and weaving the rubber string as a rope strand into a 12-strand braided structure to obtain a first cable component; testing the elongation of the first cable component at 20% of the breaking strength by a tensile testing machine;

[0067] A second cable component is obtained by taking a plurality of ultra-high molecular weight polyethylene multifilaments and subjecting them to twisting, stranding, braiding and other processes;

[0068] By connecting the first cable component and the second cable component in parallel, the high elasticity and high strength mooring device disclosed in Example 2 is obtained.

[0069] like Figure 4 As shown in FIG. 1 , the parallel structure is provided with high elastic extension by the first cable component, and the second cable component provides strength after predetermined extension. Under the working load, the first cable component continues to extend, and its length reaches the initial length of the second cable component, and then the second cable component suddenly begins to bear force, as shown in FIG. Figure 4 As shown in point A; then the displacement continues to increase. Due to the parallel structure, the deformation displacement of the first cable component and the second cable component is the same, but the loads borne by the first cable component and the second cable component are different. The second cable component bears the main load. Figure 4 As shown at point B, the first cable component is a highly elastic rope body, so its force value increases slowly with the increase of displacement, and the second cable component is a strong component, so its force value increases rapidly with the increase of displacement.

[0070] Example 3

[0071] Figure 5 It is a schematic structural diagram of the high elasticity and high strength mooring device disclosed in Example 3; Figure 6 This is a force diagram of the high-elasticity and high-strength mooring device disclosed in Example 3.

[0072] like Figure 5 As shown, the high elasticity and high strength mooring device includes a first cable component 1, a second cable component 2 which is spirally wound on the first cable component 1 and has eyelets at both ends respectively connected to the eyelets at both ends of the first cable component 1, and the first cable component 1 and the second cable component 2 are a spirally wound structure.

[0073] The ultimate working load of the high-elasticity and high-strength mooring device disclosed in Example 3 is 12 tons, and the overall length in the natural state is 20 meters, that is, the length of the first cable component is 20 meters.

[0074] The preparation process of the high elasticity and high strength mooring device disclosed in Example 3 is as follows:

[0075] The ultimate working load of the high elastic high strength mooring device is 12t. It is designed with a safety factor of 5. The breaking strength of the first cable component is at least 12t, and the breaking strength of the second cable component is 60t.

[0076] The diameter and linear density of the first cable component and the second cable component are designed according to the breaking strength of the first cable component and the second cable component; according to the formula 1.5×L A <L B <L A ×(1+elongation), and then calculate the length of the second cable component according to the maximum displacement of the floating body and the mechanical properties of the floating body; where L A is the length of the first cable component, L B is the length of the second cable component, and the elongation is the elongation of the first cable component at 20% of the breaking strength;

[0077] Feeding a plurality of composite rubber threads in parallel, weaving a layer of polyester rope skin on the outside of the rubber threads to obtain a rubber string, and weaving the rubber string as a rope strand into a 12-strand braided structure to obtain a first cable component; testing the elongation of the first cable component at 20% of the breaking strength by a tensile testing machine;

[0078] A second cable component is obtained by taking a plurality of ultra-high molecular weight polyethylene multifilaments and subjecting them to twisting, stranding, braiding and other processes;

[0079] The first cable component and the second cable component are spirally wound and connected to obtain the high elasticity and high strength mooring device disclosed in Example 3.

[0080] like Figure 6As shown in FIG. 1 , the spirally wound structure is provided with high elastic elongation by the first cable component, and the second cable component provides strength after predetermined elongation. Under the working load, the first cable component continues to elongate, and its length reaches the initial length of the second cable component, and then the second cable component suddenly begins to bear force, as shown in FIG. Figure 6 As shown in point A; then the displacement continues to increase. Due to the parallel structure, the deformation displacement of the first cable component and the second cable component is the same, but the loads borne by the first cable component and the second cable component are different. The second cable component bears the main load. Figure 6 As shown at point B, the first cable component is a highly elastic rope body, so its force value increases slowly with the increase of displacement, and the second cable component is a strong component, so its force value increases rapidly with the increase of displacement.

[0081] Example 4

[0082] Figure 7 This is a force-displacement curve diagram of the mechanical properties test of the first cable component disclosed in Example 4.

[0083] Embodiment 4 discloses a method for manufacturing a first cable component having a diameter of 20 mm and a 12-strand braided structure, which specifically includes:

[0084] Step 1: Select high-strength polyester fiber with a fiber specification of 1000D to 2000D and a strength requirement of no less than 7g / D. First, apply tension evenly through a multi-roll tension machine and pre-weave the polyester yarn onto a designated yarn tube for standby use. Step 2: Feed the latex yarn evenly into the braiding machine through a wire divider, run the braiding machine, and make a 3mm diameter elastic cord with a breaking strength of 748N.

[0085] The elastic sub-rope is pre-woven onto the spindle as a rope strand, the spindle is mounted onto the braiding machine, the braiding machine is operated, the pitch size is adjusted to ensure that the pitch multiple is 8 times the diameter, and a first cable component with a diameter of 20 mm is obtained.

[0086] The mechanical properties of the first cable component are tested:

[0087] Cut a certain length of the first cable component and weave eyelets at both ends thereof;

[0088] The eyelets at both ends of the first cable component are fixed on the tensile testing machine through pins, a pre-tension is applied to measure the pin spacing of the first cable component under the pre-tension, and then a load is applied at a rate of 200 mm / min until it breaks; the test results are shown in Table 1 below.

[0089] like Figure 7As shown, the data corresponding to the force-displacement curve are derived to obtain the force value and displacement value, and the elongation at 10%, 20%, 30%, 40%, and 50% breaking strength is calculated to be 88%, 105%, 118%, 132%, and 140%, respectively. It can be obtained that the elongation at 50% breaking strength is 140%, which meets the design requirement that the elastic elongation of the first cable component is ≥100%.

[0090] Table 1 Mechanical properties test results

[0091] Specifications (mm) Breaking strength N Initial length m Elongation at break m Elongation at break % 20 5380 1.14 1.98 174

[0092] Elongation at break = elongation at break ÷ initial length × 100%;

[0093] Pretension = D2÷8×0.01, D is the rope diameter in mm, and the force unit is KN;

[0094] Where:

[0095] Elongation at break - the distance between the pins of the first cable component when it breaks minus the distance between the pins of the first cable component under pretension;

[0096] Initial length – the distance between the pins of the first cable component under pre-tension.

[0097] Example 5

[0098] Figure 8 This is a schematic diagram of the structure of the high elasticity and high strength mooring device disclosed in Example 5. Figure 8 As shown, the high elasticity and high strength mooring device includes two first cable components 1 and two second cable components 2, wherein the two first cable components 1 and one second cable component 2 are connected end to end from left to right in the arrangement of first cable component 1, second cable component 2, and first cable component 1, and the other second cable component 2 is spirally wound on the first cable component 1 arranged at the right end.

[0099] Example 6

[0100] Fig. 9 This is a schematic diagram of the structure of the high elasticity and high strength mooring device disclosed in Example 6. Fig. 9 As shown, the high elasticity and high strength mooring device comprises two first cable components 1 connected to each other, wherein the first cable component 1 on the left is connected in parallel with a second cable component 2, and another second cable component 2 is spirally wound around the first cable component 1 on the right.

[0101] Example 7

[0102] Fig.10 This is a schematic diagram of the structure of the high elasticity and high strength mooring device disclosed in Example 7. Fig.10As shown, the high elasticity and high strength mooring device includes two first cable components 1 and two second cable components 2, wherein the two first cable components 1 and one second cable component 2 are connected end to end from left to right in the arrangement of first cable component 1, second cable component 2, and first cable component 1, and the other second cable component 2 is connected in parallel to the first cable component 1 at the right end.

[0103] Example 8

[0104] Fig.11 This is a schematic diagram of the structure of the high elasticity and high strength mooring device disclosed in Example 8. Fig.11 As shown, the high elasticity and high strength mooring device includes three first cable components 1 and three second cable components 2, wherein the three first cable components 1 and one second cable component 2 are connected end to end from left to right in the arrangement of first cable component 1, first cable component 1, second cable component 2, and first cable component 1, and of the remaining two second cable components 2, one is spirally wound on the first cable component 1 at the left end, and the other is connected in parallel to the first cable component 1 at the right end.

[0105] The high-elasticity and high-strength mooring device suitable for shallow sea with large tidal range disclosed in an embodiment of the present invention comprises a first cable component and a second cable component which are combined to form a composite structure. The first cable component provides high elastic elongation, and the second cable component provides strength. This solves the defect that only relying on the elasticity provided by the rubber body cannot provide large-tonnage mooring force for large offshore facilities. It also solves the problem that in large tidal range and large displacement scenarios, the mooring cable that only relies on the mooring cable is either severely loose or excessively stressed to damage the buoy. It also solves the problem that traditional rubber elastic ropes cannot be woven into eyes.

[0106] The technical solutions disclosed in the present invention and the technical details disclosed in the embodiments are merely illustrative of the inventive concept of the present invention and do not constitute a limitation on the technical solutions of the present invention. Any conventional changes, substitutions or combinations of the technical details disclosed in the embodiments of the present invention have the same inventive concept as the present invention and are within the protection scope of the claims of the present invention.

Claims

1. A high-elasticity and high-strength mooring device suitable for shallow seas with large tidal ranges, characterized by: The high-elasticity and high-strength mooring device is a composite structure formed by a first cable component and a second cable component, wherein: The first cable component comprises a first cable body woven from rubber threads or latex threads, and two ends of the first cable body are respectively woven into two first eye rings; the elastic elongation of the first cable component is ≥100%; The second cable component comprises a second cable body woven from aramid, ultra-high molecular weight polyethylene, polyester or nylon, wherein two ends of the second cable body are respectively woven with eyes to form two second eye rings; The first cable component and the second cable component are connected and compounded through the first eyelet and the second eyelet; the elastic elongation of the first cable component is greater than the elastic elongation of the second cable component, and the tensile strength of the second cable component is greater than the tensile strength of the first cable component.

2. The high elasticity and high strength mooring device suitable for shallow sea and large tidal range according to claim 1 is characterized in that: One of the first eyelets of the first cable component is connected to one of the second eyelets of the second cable component; the breaking strength of the first cable component is the same as the breaking strength of the entire high-elasticity and high-strength mooring device.

3. The high elasticity and high strength mooring device suitable for shallow sea and large tidal range according to claim 1 is characterized in that: The two first eyelets of the first cable component are respectively connected to the two second eyelets of the second cable component; the initial length of the second cable component is greater than or equal to 1.5 times the initial length of the first cable component, and the breaking strength of the first cable component is greater than or equal to 20% of the breaking strength of the entire high-elastic and high-strength mooring device.

4. The high elasticity and high strength mooring device suitable for shallow sea and large tidal range according to claim 1 is characterized in that: The two first eyelets of the first cable component are respectively connected to the two second eyelets of the second cable component, and the second cable component is spirally wound on the first cable component; the breaking strength of the first cable component is greater than or equal to 20% of the breaking strength of the entire high-elasticity and high-strength mooring device.

5. The high elasticity and high strength mooring device suitable for shallow sea and large tidal range according to claim 1 is characterized in that: The first cable component is a braided structure of 8 strands, 12 strands or 16 strands.

6. The high elasticity and high strength mooring device suitable for shallow sea and large tidal range according to claim 1 is characterized in that: The outer surface of the first cable component is covered with a wear-resistant sheath.

7. The high elasticity and high strength mooring device suitable for shallow sea and large tidal range according to claim 1 is characterized in that: The first cable components are provided in plurality, and the second cable components are provided in plurality, wherein at least one first eyelet of the first cable component is connected and compounded with at least one second eyelet of the second cable component.

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