Quick cable stopper applied to offshore wind power tension leg system

Abstract

The invention provides a quick cable stopper applied to an offshore wind power tension leg system. According to the quick cable stopper, a hydraulic driving layered saw-shaped tooth length adjusting technology and a hard alloy spherical pair angle adjusting technology are adopted, and hydraulic driving shaft pushing automatic locking length adjusting installation operation, spherical pair follow-up centering deviation adjusting operation and hydraulic driving shaft pushing automatic unlocking dismounting operation are sequentially carried out; the spherical deviation adjustor completes angle adjustment according to a spherical pair, the cable stopping and length adjusting device and the conical self-locking device achieve radial movement of the conical self-locking device through precise matching of an upper layer parallel inclined plane moving pair and a lower layer parallel inclined plane moving pair, and the hydraulic driving force system provides power for the conical self-locking device. The conical self-locking device is of a split structure which is evenly arranged along the circumference, locking and unlocking of the conical self-locking device and the hydraulic driving force system are completed through precise matching of an upper intersecting plane moving pair and a lower intersecting plane moving pair, and length adjustment of the sawtooth adjusting column is completed through precise matching of layered saw-shaped teeth and layered sawtooth grooves of the conical clamping block.

Description

Technical Field

[0001] The present invention relates to a top connector of an offshore floating wind power tension leg system, specifically a quick cable stopper applied to an offshore wind power tension leg system. Background Art

[0002] There is no precedent for engineering applications of deep - sea and ultra - deep - sea tension leg floating wind power with a water depth of 100 meters or more globally. The tension leg system between the pile foundation and the floating wind power platform mainly includes three parts: a top cable stopper, a fully steel cable tension leg, and a bottom anchor pile connector. The top cable stopper is used to connect the floating wind power platform and the top of the fully steel cable tension leg. The top of the fully steel cable tension leg is connected to the top cable stopper through a steel cable locking joint, and the bottom of the fully steel cable tension leg is connected to the bottom anchor pile connector through a steel cable knot. The bottom anchor pile connector is used to connect the bottom anchor pile and the bottom of the fully steel cable tension leg.

[0003] In the 1950s, the United States first used inclined tension cables in the mooring system of offshore platforms, which is recognized as the originator of the Tension Leg Platform (TLP). In the 1980s, CONOCO officially built the world's first TLP and installed it in the Hutton oil field in the North Sea of Europe. Since then, TLP has developed and been applied rapidly. Currently, nearly 30 TLP platforms have been successfully installed and applied, with the deepest application water depth approaching 1600 m. At the same time, the functions and structures of the TLP system are suitable for the sea conditions in the Bohai Sea and the South China Sea of China.

[0004] The top cable stopper of the tension leg system is a key component. In actual use, it needs to bear comprehensive actions such as large tension forces, loads brought by wave impacts, and cyclic alternating loads. The top cable stopper is directly related to the overall performance, stability, and reliability of the floating wind power platform. Relying on the update and iteration of construction technologies and new materials, the top cable stopper has gradually evolved from the thick - wall forging threaded connector of the Hutton platform to the thin - wall steel pipe and connector with flexible bodies at both ends of the Auger platform. However, the technologies and processing techniques required for the top cable stopper of the tension leg system are complex, resulting in very few companies in the world that can independently research, develop, and manufacture top cable stoppers. Currently, there are mainly companies such as GMC in the United States, REMAZEL in Italy, OilStates in the United Kingdom, and Hutchinson in France.

[0005] Aiming at the actual size and load requirements of deep - sea and ultra - deep - sea floating wind power platforms with a water depth of 100 meters or more, it is of great practical significance to break through the first - set of domestic technologies integrating the design and construction of the top cable stopper for the tension leg system of floating wind power platforms, achieve a design life of more than 25 years, meet the extreme sea - state environmental conditions once in 100 years, and provide reliable solutions and technical supports for the third - party international classification society certification of the cable stopper and the application of offshore floating wind power. Summary of the Invention

[0006] In order to break through the design of the top cable stopper for the deep - sea and far - sea floating wind power tension leg system with a depth of 100 meters or more, the object of the present invention is to provide a fast cable stopper suitable for offshore floating wind power.

[0007] The present invention adopts the following technical solutions:

[0008] The fast cable stopper applied to the offshore wind power tension leg system includes a cable - stopping length adjuster, a conical self - locking device, a serrated adjusting column and a hydraulic driving system. The cable - stopping length adjuster and the hydraulic driving system are arranged from bottom to top. The conical self - locking device is placed in the annular cavity of the cable - stopping length adjuster. The serrated adjusting column penetrates through the cable - stopping length adjuster and the conical self - locking device and is located at the axis. Among them:

[0009] The cable - stopping length adjuster includes a cable - stopping length - adjusting base, a cable - stopping length - adjusting body and a cable - stopping length - adjusting end cap which are fixedly connected in sequence from bottom to top. An annular cavity is formed between the cable - stopping length - adjusting body and the cable - stopping length - adjusting end cap. An upper adjusting - length sliding groove is arranged on the upper top surface of the annular cavity, and a lower adjusting - length sliding groove is arranged on the lower bottom surface of the annular cavity. The upper adjusting - length sliding groove and the lower adjusting - length sliding groove are arranged in parallel;

[0010] The conical self - locking device includes a conical clamping block and a conical sliding block fixed on the outer side of the conical clamping block. A layered serrated groove is formed on the inner side surface of the conical clamping block; The conical sliding block includes an upper self - locking sliding block, and the upper self - locking sliding block and the upper adjusting - length sliding groove cooperate to form an upper inclined - plane moving pair; Both the bottom end of the conical clamping block and the bottom end of the conical sliding block are provided with lower self - locking sliding blocks which are matched with the lower adjusting - length sliding groove. The lower self - locking sliding block and the lower adjusting - length sliding groove cooperate to form a lower inclined - plane moving pair, and the lower inclined - plane moving pair and the upper inclined - plane moving pair are arranged in parallel;

[0011] The serrated adjusting column includes an adjusting column body, an adjusting column upper joint and an adjusting column lower joint respectively connected to the upper and lower ends of the adjusting column body. A layered serrated tooth is arranged on the outer side surface of the adjusting column body, and the layered rectangular tooth is adapted to the layered rectangular groove;

[0012] The hydraulic driving system is connected to the conical self - locking device and is used to drive the conical self - locking device to lock or unlock with the serrated adjusting column.

[0013] Furthermore, a spherical alignment device is fixedly connected to the lower end of the cable - stopping length - adjusting base. The spherical alignment device includes an angle - adjusting body, a split alloy bushing, an alignment base and an alignment end cap. Among them:

[0014] The angle - adjusting body includes an adjusting spherical tube and an adjusting column tube fixed to the upper end of the adjusting spherical tube;

[0015] The split alloy bushing includes a lower alloy bushing, a self-lubricating wear-resistant column, and an upper alloy bushing ring. The upper alloy bushing ring is arranged between the alignment end cover and the alignment spherical tube, and the lower alloy bushing is arranged between the alignment base and the alignment spherical tube; the inner ring surface of the lower alloy bushing cooperates with the outer surface of the alignment spherical tube to form a spherical pair. Self-lubricating circular holes arranged in layers from top to bottom are provided on the hemispherical surface where the inner ring surface of the lower alloy bushing is located, and the self-lubricating wear-resistant columns are embedded into the self-lubricating circular holes.

[0016] Further, a thrust surface for alignment is provided at the bottom end of the alignment spherical tube. The plane where the thrust surface for alignment is located is a regular circular surface. The center of the hemispherical surface where the outer surface of the alignment spherical tube is located coincides with the center of the hemispherical surface where the inner ring surface of the lower alloy bushing is located, and the center is located at the intersection of the plane where the upper end surface of the alignment base is located and the axis of the alignment column tube;

[0017] A clearance fit is adopted between the alignment spherical tube and the upper alloy bushing ring, and a clearance fit is also adopted between the alignment spherical tube and the alignment end cover.

[0018] Further, two rows of oil storage grooves are milled on the lower hemispherical surface of the hemispherical surface where the outer surface of the alignment spherical tube is located and centered on the center of the sphere. Each row of oil storage grooves is parallel to the plane where the contour line is located, and the two rows of oil storage grooves are arranged perpendicular to each other and intersect. Each oil storage groove is kept connected and filled with grease.

[0019] Further, the inner ring surface of the upper alloy bushing ring is machined into a concave hemispherical surface, and a cylindrical snap ring for the alloy bushing is provided at the top of its outer surface. The inner ring surface of the alignment end cover is provided with a hemispherical surface and a cylindrical slot for the alignment end cover from top to bottom. An interference fit is adopted between the cylindrical snap ring for the alloy bushing and the cylindrical slot for the alignment end cover to embed the upper alloy bushing ring into the alignment end cover. Screw holes are drilled around the alignment end cover and arranged uniformly in the circumferential direction, and the alignment end cover is fixed to the top of the alignment base by screws.

[0020] Further, the inner side surface of the conical sliding block includes an inverted conical surface, a conical surface, a horizontal surface, and a concave cylindrical surface from top to bottom; an upper self-locking sliding block is provided on the inverted conical surface where the inner side surface of the conical sliding block is located, a middle self-locking sliding groove is provided on the conical surface, and a self-locking strip-shaped block is provided on the concave cylindrical surface;

[0021] The outer side surface of the conical block includes a conical surface, a horizontal surface, and a convex cylindrical surface from top to bottom. The horizontal surface where the outer side surface of the conical block is located coincides with the horizontal surface where the inner side surface of the conical sliding block is located, and a self-locking strip-shaped groove is provided on the convex cylindrical surface where the outer side surface of the conical block is located. An interference fit is adopted between the self-locking strip-shaped groove of the conical block and the corresponding self-locking strip-shaped block of the conical sliding block.

[0022] Further, the outer surface of the adjusting column body is generally made into layered sawtooth-shaped teeth arranged in layers. The tooth profile line at the cross-section of each layer of sawtooth-shaped teeth presents a sawtooth shape. A clearance fit is adopted between the cylindrical surface where the tooth top surface of the layered sawtooth-shaped teeth is located and the adjusting column tube of the angle deviation adjusting body, the outermost layer cavity wall of the cable stopper length adjusting base and the cable stopper length adjusting body. The upward inclination angle of the upper segment along the axial direction of the tooth profile line of the layered sawtooth-shaped teeth and the tooth groove contour line of the layered sawtooth groove is greater than the downward inclination angle of its lower segment along the axial direction, so that the layered sawtooth-shaped teeth can quickly cut into the layered sawtooth groove of the conical clamping block during the locking operation of the quick cable stopper and quickly disengage from the layered sawtooth groove during the unlocking operation.

[0023] Further, the hydraulic driving system includes a hydraulic cylinder, a hydraulic drive cover plate, an axial push sliding ring, a hydraulic drive push rod and a crane sliding rod;

[0024] The hydraulic drive cover plate is welded into one body after being fitted with the variable cross-section cylindrical groove at the top of the cable stopper length adjusting end cover. A thick cylindrical sliding hole is drilled in the central part of the hydraulic drive cover plate, and a clearance fit is adopted between the cylindrical surface where the tooth top surface of the layered sawtooth-shaped teeth is located and the thick cylindrical sliding hole;

[0025] The periphery of the hydraulic drive cover plate is provided with hydraulic drive cylindrical sliding holes arranged evenly along the circumference. A hydraulic drive push rod or a crane sliding rod is arranged in each hydraulic drive cylindrical sliding hole, and the hydraulic drive push rods and the crane sliding rods are arranged at intervals. Each hydraulic drive push rod is equipped with an independent hydraulic cylinder. Each hydraulic cylinder is placed along the axial direction of the sawtooth adjusting column. The hydraulic cylinder drives the axial reciprocating movement of the axial push sliding ring, and the reciprocating movement of the axial push sliding ring drives the reciprocating movement of the conical self-locking device; the hydraulic oil of all independent hydraulic cylinders is uniformly supplied and distributed through the main oil pump and the multi-way directional control valve to complete the automatic synchronous axial propulsion function;

[0026] Further, the hydraulic drive push rod is composed of a push rod positioning block and a push rod sliding column, and the crane sliding rod is composed of a sliding rod positioning block, a sliding rod sliding column and a lifting rope locking ring. The sliding rod positioning block and the sliding rod sliding column are circumferentially welded, and at the same time, the sliding rod sliding column and the lifting rope locking ring are threadedly connected to connect the crane sliding rod into one body. Both the push rod positioning block and the sliding rod positioning block are made of square steel blocks, and both the push rod sliding column and the sliding rod sliding column are made of cylindrical steel columns. The push rod sliding column of the hydraulic drive push rod and the sliding rod sliding column of the crane sliding rod are precisely fitted with the hydraulic drive cylindrical sliding holes of the corresponding hydraulic drive cover plate at the same time to form a cylindrical surface moving pair arranged evenly along the circumferential direction.

[0027] Furthermore, the bottom end face of the axial-pushing sliding ring is ground into a plane, and its outer side surface is successively composed of a cylindrical surface, an inverted conical surface, and a conical surface from top to bottom. A middle axial-pushing sliding block is provided on the conical surface where the outer side surface of the axial-pushing sliding ring is located. Each middle axial-pushing sliding block of the axial-pushing sliding ring is precisely matched with the middle self-locking sliding groove of the corresponding conical sliding block to form a middle inclined plane moving pair arranged uniformly along the circumferential direction. At the same time, the bottom end face of the axial-pushing sliding ring is precisely matched with the horizontal plane where the radial outer side surface of each conical clamping block is located and the horizontal plane where the inner side surface of the conical sliding block is located to form a middle horizontal plane moving pair. The middle horizontal plane moving pair and the middle inclined plane moving pair are arranged intersectingly.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0029] The quick mooring stopper adopts the technologies of hydraulic-driven laminated sawtooth for length adjustment and carbide spherical pair for angle adjustment, and successively implements the installation operation of hydraulic-driven axial-pushing automatic locking for length adjustment, the follow-up centering and deviation adjustment operation of the spherical pair, and the disassembly operation of hydraulic-driven axial-pushing automatic unlocking; the spherical deviation adjuster completes the angle adjustment of the quick mooring stopper based on the carbide spherical pair. The mooring length adjuster and the conical self-locking device achieve the radial movement of the conical self-locking device through the precise cooperation of the upper and lower two-layer parallel inclined plane moving pairs. The hydraulic driving system provides power for the conical self-locking device based on the hydraulic cylinder. The conical self-locking device adopts a split structure arranged uniformly along the circumference and completes the locking and unlocking of the quick mooring stopper through the precise cooperation with the hydraulic driving system by the upper and lower two intersecting plane moving pairs. The sawtooth adjustment column completes the length adjustment of the quick mooring stopper through the precise cooperation of the laminated sawtooth with the laminated sawtooth groove of the conical clamping block. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0031] Figure 1 It is a structural schematic diagram of the quick mooring stopper applied to the offshore wind power tension leg system proposed by the present invention.

[0032] Figure 2 It is a structural schematic diagram of the spherical deviation adjuster of the quick mooring stopper applied to the offshore wind power tension leg system.

[0033] Figure 3 It is a structural schematic diagram of the angle deviation adjustment body in the spherical deviation adjuster.

[0034] Figure 4 It is a structural schematic diagram of the split alloy bushing in the spherical deviation adjuster.

[0035] Figure 5 It is a structural schematic diagram of the cable length adjuster of the quick cable stopper applied to the tension leg system of offshore wind power.

[0036] Figure 6 It is a structural schematic diagram of the conical self-locking device of the quick cable stopper applied to the tension leg system of offshore wind power.

[0037] Figure 7 It is a structural schematic diagram of the serrated adjusting column of the quick cable stopper applied to the tension leg system of offshore wind power.

[0038] Figure 8 It is a structural schematic diagram of the hydraulic driving force system of the quick cable stopper applied to the tension leg system of offshore wind power.

[0039] Figure 9 It is a schematic diagram of the principle of the hydraulic driving force system of the quick cable stopper applied to the tension leg system of offshore wind power.

[0040] Figure 10 It is a schematic diagram of the installation operation process of the hydraulic drive shaft push automatic locking and length adjustment of the quick cable stopper applied to the tension leg system of offshore wind power.

[0041] Figure 11 It is a schematic diagram of the disassembly operation process of the hydraulic drive shaft push automatic unlocking of the quick cable stopper applied to the tension leg system of offshore wind power.

[0042] Figure 12 It is a schematic diagram of the operation process of the spherical pair follow-up centering and deviation adjustment of the quick cable stopper applied to the tension leg system of offshore wind power.

[0043] In the figure: 1 - Spherical alignment adjuster, 2 - Cable stop length adjuster, 3 - Conical self-locking device, 4 - Serrated adjusting column, 5 - Hydraulic driving system, 6 - Split alloy bushing, 7 - Alignment base, 8 - Alignment end cover, 9 - Angle alignment body, 10 - Cylindrical card slot of alignment end cover, 11 - Alignment positioning slot, 12 - Alignment spherical tube, 13 - Alignment column tube, 14 - Alignment conical card slot, 15 - Alignment cylindrical card slot, 16 - Oil storage tank, 17 - Alignment thrust surface, 18 - Lower alloy bushing, 19 - Self-lubricating wear-resistant column, 20 - Upper alloy bushing ring, 21 - Cylindrical snap ring of alloy bushing, 22 - Bushing positioning ring, 23 - Self-lubricating round hole, 24 - Cable stop length base, 25 - Cable stop length body, 26 - Cable stop length end cover, 27 - Variable cross-section cylindrical slot, 28 - Upper length adjustment limit slot, 29 - Upper length adjustment sliding slot, 30 - Lower length adjustment limit slot, 31 - Slag discharge hole, 32 - Lower length adjustment sliding slot, 33 - Length adjustment conical boss, 34 - Length adjustment conical positioning slot, 35 - Length adjustment cylindrical snap ring, 36 - Length adjustment conical snap ring, 37 - Conical clamping block, 38 - Conical sliding block, 39 - Upper self-locking sliding block, 40 - Middle self-locking sliding slot, 41 - Self-locking bar-shaped clamping block, 42 - Lower self-locking sliding block, 43 - Self-locking bar-shaped card slot, 44 - Layered serrated slot, 45 - Upper joint of adjusting column, 46 - Body of adjusting column, 47 - Layered sawtooth, 48 - Lower joint of adjusting column, 49 - Lower locking joint, 50 - Columnar long joint body, 51 - Columnar short joint body, 52 - Upper locking joint, 53 - Hydraulic cylinder, 54 - Hydraulic driving support, 55 - Hydraulic driving limit pin, 56 - Hydraulic driving cover plate, 57 - Hydraulic driving push rod, 58 - Axial thrust sliding ring, 59 - Crane slide bar, 60 - Hoisting rope lock ring, 61 - Slide bar sliding column, 62 - Slide bar positioning block, 63 - Hydraulic driving cylindrical sliding hole, 64 - Thick cylindrical sliding hole channel, 65 - Cylinder barrel, 66 - Cylinder barrel oil inlet, 67 - Cylinder barrel oil return port, 68 - Piston rod, 69 - Split pin, 70 - Push rod sliding column, 71 - Push rod positioning block, 72 - Variable cross-section axial thrust slot, 73 - Axial thrust cylindrical hole slot, 74 - Axial thrust square hole slot, 75 - Middle axial thrust sliding block, 76 - Multi-way directional control valve. Detailed implementation manners

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0045] The following combines the attached Figure 1 to the attached Figure 12 and specific embodiments to elaborate on the present invention in detail.

[0046] The quick cable stopper applied to the offshore wind power tension leg system provided by the present invention adopts the technologies of hydraulic drive layer sawtooth for length adjustment and carbide spherical pair for angle adjustment, and successively implements the operations of hydraulic drive shaft push automatic locking for length adjustment and installation, spherical pair follow-up centering and deviation adjustment, and hydraulic drive shaft push automatic unlocking and disassembly.

[0047] Refer to Figure 1 , the quick cable stopper of the present application includes a spherical deviation adjuster 1, a cable stop length adjuster 2, a conical self-locking device 3, a sawtooth adjusting column 4 and a hydraulic driving system 5. The quick cable stopper as a whole adopts a cylindrical axisymmetric structure, and the sawtooth adjusting column 4 is arranged at the axis of the innermost layer. The spherical deviation adjuster 1, the cable stop length adjuster 2 and the hydraulic driving system 5 are arranged from bottom to top, and the conical self-locking device 3 is arranged in the annular cavity of the cable stop length adjuster 2; the top of the quick cable stopper is connected to the main hoisting rope joint of the crane in the installation operation through the sawtooth adjusting column 4, and is connected to the auxiliary hoisting rope joint of the crane in the installation operation through the hydraulic driving system 5. The lower part of the quick cable stopper is connected to the floating wind power platform through the spherical deviation adjuster 1, and the bottom of the quick cable stopper is connected to the all-steel cable tension leg through the sawtooth adjusting column 4 and the steel cable lock joint.

[0048] It should be noted that each set of all-steel cable tension legs is equipped with a set of quick cable stoppers. Every three sets of quick cable stoppers form a group and are respectively connected to the floating wind power platform. The positions of each group of quick cable stoppers are consistent with the pile legs. When the key component materials of the spherical deviation adjuster 1, the cable stop length adjuster 2, the conical self-locking device 3, the sawtooth adjusting column 4 and the hydraulic driving system 5 in the present application are selected as alloy steel materials, anti-corrosion measures with sacrificial anodes need to be coordinated. And after the quick cable stopper exceeds the design life, major overhaul operations need to be carried out. Before installation, it is necessary to check the upper and lower two-layer parallel inclined plane moving pairs between the cable stop length adjuster 2 and the conical self-locking device 3, the upper and lower two intersecting plane moving pairs between the conical self-locking device 3 and the hydraulic driving system 5, the cylindrical surface moving pairs uniformly arranged along the circumferential direction of the hydraulic driving system 5, and the carbide spherical pair of the spherical deviation adjuster 1, and check the sawtooth of each layer of the sawtooth adjusting column 4, the sawtooth grooves of each layer of the conical blocks of the conical self-locking device 3, and the matching situation between each layer of sawtooth and the sawtooth grooves.

[0049] Refer to Figure 2, the spherical alignment device 1 includes an angular alignment body 9, a split alloy bushing 6, an alignment base 7, and an alignment end cap 8. The spherical alignment device 1 completes the angular adjustment of the quick cable stopper based on the spherical pair between the split alloy bushing 6 and the angular alignment body 9. The connection between the spherical alignment device 1 and the floating wind power platform is realized through the flange of the alignment base 7. When designing the split alloy bushing 6 that fits into the alignment end cap cylindrical slot 10 of the alignment end cap 8 and the alignment positioning slot 11 of the alignment base 7, factors such as the maximum tension, maximum fatigue stress, and maximum contact stress borne by the all-steel cable tension leg under extreme working conditions need to be considered. The spherical part of the angular alignment body 9 that extends beyond the alignment end cap 8 shall not be less than the maximum value of the rotational angle adjustment of the quick cable stopper.

[0050] Refer to Figures 2 to 4 In [reference], the angular alignment body 9 adopts a thick-walled tube body combined with an alignment spherical tube 12 and an alignment column tube 13. The upper end of the angular alignment body 9 is connected to the cable stopper length adjuster 2 through screws. The alignment column tube 13 adopts a cylindrical ring body. The top of the alignment column tube 13 is provided with an alignment conical slot 14 and an alignment cylindrical slot 15 radially from the inside to the outside. The alignment spherical tube 12 and the alignment column tube 13 are connected by a shoulder. The bottom end of the alignment spherical tube 12 is provided with an alignment thrust surface 17. The plane where the alignment thrust surface 17 is located is a regular circular surface. The inner ring surface of the alignment spherical tube 12 adopts a conical surface and its outer surface adopts a convex hemispherical surface. The center of the hemispherical surface where the outer surface of the alignment spherical tube 12 is located coincides with the center of the hemispherical surface where the inner ring surface of the split alloy bushing 6 is located and is at the intersection of the plane where the upper end surface of the alignment base 7 is located and the axis of the alignment column tube 13. A spherical pair is formed and precisely fitted between the hemispherical surface where the outer surface of the alignment spherical tube 12 is located and the hemispherical surface where the inner ring surface of the lower alloy bushing 18 is located, so as to realize the angular adjustment of the quick cable stopper. At the same time, clearance fits are adopted between the hemispherical surface where the outer surface of the alignment spherical tube 12 is located and the hemispherical surface where the inner ring surface of the upper alloy bushing ring 20 is located, and between the hemispherical surface where the outer surface of the alignment spherical tube 12 is located and the hemispherical surface where the inner ring surface of the alignment end cap 8 is located.

[0051] Two rows of oil storage grooves 16 are milled on the lower hemispherical surface of the hemispherical surface where the outer surface of the alignment spherical tube 12 of the angular alignment body 9 is located and centered. The oil storage grooves 16 of each row of the angular alignment body 9 are parallel to the plane where the contour line is located, and the two rows of oil storage grooves 16 are arranged perpendicular to each other and intersect. Thus, the oil storage grooves 16 are kept connected and filled with grease. The cross-section of the oil storage groove 16 perpendicular to the contour line is rectangular and has equal area. The two end faces of each oil storage groove 16 are set as semi-cylindrical surfaces.

[0052] Refer to Figures 2 to 4, the split alloy bushing 6 is composed of a lower alloy bushing 18, a self-lubricating wear-resistant column 19, and an upper alloy bushing ring 20. The inner ring surface of the upper alloy bushing ring 20 is machined into a concave hemispherical surface, and a cylindrical snap ring 21 for the alloy bushing is provided at the top of its outer surface. The upper alloy bushing ring 20 is embedded into the alignment end cover 8 through interference fit between the cylindrical snap ring 21 for the alloy bushing and the cylindrical slot 10 of the alignment end cover to achieve axial limit of the angle adjustment body 9. The bushing positioning ring 22 and the alignment positioning slot 11 are in interference fit to embed the lower alloy bushing 18 into the alignment base 7.

[0053] The inner ring surface of the lower alloy bushing 18 of the split alloy bushing 6 is machined into a concave hemispherical surface and a conical surface from top to bottom. The position of the hemispherical surface where the inner ring surface of the lower alloy bushing 18 is located is below the center of the sphere. And self-lubricating circular holes 23 arranged in layers from top to bottom are machined on the hemispherical surface where the inner ring surface of the lower alloy bushing 18 is located. Each layer of self-lubricating circular holes 23 is evenly arranged along the circumferential direction, and the layer spacing of each layer of self-lubricating circular holes 23 is equal. Each self-lubricating circular hole 23 is embedded with a self-lubricating wear-resistant column 19, and the height of the self-lubricating wear-resistant column 19 is greater than the depth of the self-lubricating circular hole 23. At the same time, the self-lubricating wear-resistant column 19 is made of a metal matrix material and is integrally sintered and formed by copper alloy powder metallurgy.

[0054] The outer surface of the lower alloy bushing 18 is formed by arranging two layers of cylindrical surfaces and two layers of inverted conical surfaces at intervals to form a bushing positioning ring 22. And the taper of the upper conical surface where the outer surface of the lower alloy bushing 18 is located is smaller than the taper of its lower conical surface, so that the wall thickness of the lower alloy bushing 18 gradually increases from top to bottom and reduces the maximum contact stress of the hemispherical surface where the inner ring surface of the lower alloy bushing 18 is located.

[0055] The diameter of the large end circular surface of the conical surface where the inner ring surface of the alignment spherical tube 12 of the angle adjustment body 9 is located is smaller than the diameter of the small end circular surface of the conical surface where the inner ring surface of the split alloy bushing 6 is located. At the same time, the diameter of the circular surface where the alignment thrust surface 17 of the alignment spherical tube 12 is located is greater than the diameter of the small end circular surface of the conical surface where the inner ring surface of the split alloy bushing 6 is located. And the conical surface where the inner ring surface of the split alloy bushing 6 is located and the conical surface where the inner ring surface of the alignment base 7 is located are on the same conical surface.

[0056] The alignment base 7 is a flat box body, and a flange is provided at its bottom end to realize the connection between the spherical aligner 1 and the floating wind power platform. The inner ring surface of the alignment base 7 is formed by arranging two layers of cylindrical surfaces and two layers of inverted conical surfaces at intervals to form an alignment positioning slot 11. The bushing positioning ring 22 of the lower alloy bushing 18 and the alignment positioning slot 11 of the alignment base 7 are in interference fit, so as to embed the lower alloy bushing 18 into the alignment base 7 and ensure that the axes of the split alloy bushing 6 and the alignment base 7 coincide.

[0057] The deviation-adjusting end cap 8 has a flange body, and its inner ring surface is provided with a hemispherical surface and a deviation-adjusting end cap cylindrical card slot 10 from top to bottom. An interference fit is adopted between the alloy bushing cylindrical snap ring 21 of the split alloy bushing 6 and the deviation-adjusting end cap cylindrical card slot 10, so as to embed the upper alloy bushing ring 20 into the deviation-adjusting end cap 8. The periphery of the deviation-adjusting end cap 8 is drilled with screw holes evenly arranged in the circumferential direction, and the deviation-adjusting end cap 8 is fixed to the top of the deviation-adjusting base 7 by screws.

[0058] Refer to Figures 2 to 4 , the anti-friction and resistance reduction of the angle-adjusting body 9 of the spherical aligner 1 are realized by means of the hard alloy spherical pair between the adjusting spherical tube 12 of the angle-adjusting body 9 and the lower alloy bushing 18 of the split alloy bushing 6, each oil storage groove 16 of the angle-adjusting body 9 and the grease stored therein, and the self-lubricating wear-resistant column 19 embedded in each lubricating round hole 23 of the lower alloy bushing 18.

[0059] Refer to Figure 5 , the bottom of the cable stopper length adjuster 2 is connected to the spherical aligner 1 by screws, and its top is connected to the hydraulic driving system 5 through the hydraulic driving cover plate 56. The cable stopper length adjuster 2 and the conical self-locking device 3 realize the radial movement of the conical self-locking device 3 through the precise fit of the upper and lower two-layer parallel inclined plane moving pairs. The cable stopper length adjuster 2 includes a cable stopper length adjusting base 24, a cable stopper length adjusting body 25 and a cable stopper length adjusting end cap 26 which are fixedly connected in sequence from bottom to top. An annular cavity is formed between the cable stopper length adjusting body 25 and the cable stopper length adjusting end cap 26. The diameters of the columnar surfaces of the outer side walls of the upper cable length adjusting limit groove 28 of the cable stopper length adjusting end cap 26 and the lower cable length adjusting limit groove 30 of the cable stopper length adjusting body 25 need to consider factors such as the maximum outer diameter of the conical self-locking device 3, the maximum radial displacement of the conical self-locking device 3, the tooth height of the layered sawtooth of the sawtooth adjusting column 4, and the groove depth of the layered sawtooth groove of the conical self-locking device 3. The depths of the cable stopper length adjusting body 25 and the cable stopper length adjusting end cap 26 need to consider factors such as the maximum axial displacement of the conical self-locking device 3 and the maximum height of the axial push sliding ring of the hydraulic driving system 5.

[0060] Refer to Figure 5 , the cable stopper length adjusting base 24, the cable stopper length adjusting body 25 and the cable stopper length adjusting end cap 26 of the cable stopper length adjuster 2 are connected into one body by a flange and screws. The inner side of the top end of the cable stopper length adjusting base 24 is provided with a length adjusting conical positioning groove 34 along the radial direction, and the bottom end of the cable stopper length adjusting base 24 is provided with a length adjusting conical snap ring 36 and a length adjusting cylindrical snap ring 35 from inside to outside along the radial direction. The length adjusting conical snap ring 36 of the cable stopper length adjusting base 24 cooperates with the length adjusting conical card slot 14 of the angle-adjusting body 9, and at the same time the length adjusting cylindrical snap ring 35 of the angle-adjusting body 9 cooperates with the length adjusting cylindrical card slot 15 of the angle-adjusting body 9 to realize the positioning between the spherical aligner 1 and the cable stopper length adjuster 2 and the coaxial arrangement between the two.

[0061] The cable stop length adjustment body 25 is a thick-walled box body, and a length adjustment conical boss 33 is provided at its bottom end. The length adjustment conical boss 33 cooperates with the length adjustment conical positioning groove 34 to realize the positioning between the cable stop length adjustment base 24 and the cable stop length adjustment body 25. A lower length adjustment limit groove 30 is provided in the inner cavity of the cable stop length adjustment body 25, and slag discharge holes 31 are drilled on its cavity wall and are uniformly arranged along the circumferential direction. The cross-section of each slag discharge hole 31 is circular and is inclined. Each slag discharge hole 31 is used to discharge the broken sea creatures, shellfish and other debris during the unlocking operation of the quick cable stop.

[0062] A variable cross-section cylindrical groove 27 is provided at the top end of the cable stop length adjustment end cover 26. Screwdriver holes are drilled around the cable stop length adjustment end cover 26 and are uniformly arranged along the circumferential direction, and are connected to the cable stop length adjustment body 25 by screws to realize the axial limit of the conical self-locking device 3. A upper length adjustment limit groove 28 is provided at the bottom end of the cable stop length adjustment end cover 26. The two side walls of the upper length adjustment limit groove 28 and the lower length adjustment limit groove 30 of the cable stop length adjustment body 25 are successively inverted conical surfaces and cylindrical surfaces from the inside to the outside, and the cylindrical surfaces where the outer side walls of the upper length adjustment limit groove 28 are located and the cylindrical surfaces where the outer side walls of the lower length adjustment limit groove 30 are located are on the same cylindrical surface. The cone height of the conical surface where the inner side wall of the upper length adjustment limit groove 28 is located is less than the cone height of the conical surface where the inner side wall of the lower length adjustment limit groove 30 is located. Upper length adjustment sliding grooves 29 and lower length adjustment sliding grooves 32 are respectively milled on the conical surfaces where the inner side walls of the upper length adjustment limit groove 28 and the lower length adjustment limit groove 30 are located and are uniformly arranged along the circumferential direction. The two side walls and the bottom surface of the upper length adjustment sliding groove 29 of the cable stop length adjustment end cover 26 and the lower length adjustment sliding groove 32 of the cable stop length adjustment body 25 are all planes.

[0063] Refer to Figure 6 , the conical self-locking device 3 adopts a split structure arranged uniformly along the circumference, and its conical clamping block 37 is provided with a layered sawtooth groove 44. The conical self-locking device 3 and the hydraulic driving system 5 complete the locking and unlocking of the quick cable stop through the precise cooperation of the upper and lower intersecting plane moving pairs. The size design of the conical sliding block 38 needs to consider factors such as the maximum radial displacement of the conical self-locking device 3 and the tooth height of the layered sawtooth of the sawtooth adjusting column 4. The size design of the conical clamping block 37 needs to consider factors such as the maximum tension, maximum fatigue stress borne by the all-steel cable tension leg under extreme working conditions and the tooth width of the layered sawtooth of the sawtooth adjusting column 4.

[0064] In Figure 6In it, the conical self-locking device 3 includes a conical clamping block 37 and a conical sliding block 38. The bottom end surfaces of the conical sliding blocks 38 are all located on the same inverted conical surface. The bottom end surfaces of the conical sliding blocks 38 are processed with lower self-locking sliding blocks 42 having the same specifications as the lower elongated sliding groove 32. At the same time, the bottom end surfaces of the conical clamping blocks 37 are also processed with lower self-locking sliding blocks 42 having the same specifications as the lower elongated sliding groove 32. The lower self-locking sliding blocks 42 and the lower elongated sliding groove 32 cooperate to form a lower inclined plane moving pair. The outer side surfaces of the conical sliding blocks 38 in the radial direction include an inverted conical surface, a conical surface, and a cylindrical surface from top to bottom in sequence. And the inner side surfaces of the conical sliding blocks 38 in the radial direction are sequentially composed of an inverted conical surface, a conical surface, a horizontal plane, and an inner concave cylindrical surface from top to bottom. Upper self-locking sliding blocks 39 are provided on the inverted conical surfaces where the inner side surfaces of the conical sliding blocks 38 are located, middle self-locking sliding grooves 40 are provided on the conical surfaces where the inner side surfaces are located, and self-locking strip-shaped blocks 41 are provided on the inner concave cylindrical surfaces where the inner side surfaces are located.

[0065] The bottom end surfaces of the conical clamping blocks 37 are all located on the same inverted conical surface, and the conical surface where the bottom end surfaces of the conical clamping blocks 37 are located is on the same conical surface as the conical surface where the bottom end surfaces of the conical sliding blocks 28 are located. The lower self-locking sliding blocks 42 of the conical clamping blocks 37 and the lower self-locking sliding blocks 42 of the conical sliding blocks 38 are all in precise cooperation with the lower elongated sliding groove 32 of the corresponding cable-stopping and length-adjusting body 25 to form lower inclined plane moving pairs arranged uniformly in the circumferential direction. At the same time, the upper self-locking sliding blocks 39 of the conical clamping blocks 37 are in precise cooperation with the upper elongated sliding groove 29 of the corresponding cable-stopping and length-adjusting end cover 26 to form upper inclined plane moving pairs arranged uniformly in the circumferential direction. And the lower inclined plane moving pairs and the upper inclined plane moving pairs are arranged in two parallel layers, upper and lower.

[0066] The outer side surfaces of the conical clamping blocks 37 in the radial direction are sequentially composed of a conical surface, a horizontal plane, and an outer convex cylindrical surface from top to bottom. The horizontal plane where the outer side surfaces of the conical clamping blocks 37 are located coincides with the horizontal plane where the inner side surfaces of the conical sliding blocks 38 are located, and self-locking strip-shaped grooves 43 are provided on the outer convex cylindrical surfaces where the outer side surfaces are located. An interference fit is adopted between the self-locking strip-shaped grooves 43 of the conical clamping blocks 37 and the self-locking strip-shaped blocks 41 of the corresponding conical sliding blocks 38, and positioning and connection between the conical clamping blocks 37 and the conical sliding blocks 38 are achieved by cooperating with screws. Layered serrated grooves 44 are machined throughout the inner side surfaces of the conical clamping blocks 37 in the radial direction. The layered serrated grooves 44 and the layered saw-shaped teeth 47 are arranged parallel to each other between layers. The tooth groove contour lines at the cross-sections of the layered serrated grooves 44 present a serrated shape.

[0067] Refer to Figure 7 , the sawtooth adjusting column 4 completes the length adjustment of the quick cable-stopping device through the precise cooperation of the layered saw-shaped teeth 47 and the layered serrated grooves 44 of the conical clamping block 37. It includes layered saw-shaped teeth 47, an adjusting column body 46, an adjusting column upper joint 45, and an adjusting column lower joint 48.

[0068] The adjusting column body 46, the layered sawtooth 47, the upper joint 45 of the adjusting column and the lower joint 48 of the adjusting column are made of an integral forging and are respectively designed as a thick and long cylindrical steel rod, a thin and short cylindrical steel rod and a slender cylindrical steel rod. The outer surface of the adjusting column body 46 is machined with layered sawteeth 47 arranged in layers. The tooth profile line at the cross-section of each layered sawtooth 47 also presents a sawtooth shape. The cylindrical surface where the tooth top surface of the layered sawtooth 47 is located has a clearance fit with the cylindrical surface where the offset adjusting column tube 13 of the angle offset body 9, the innermost cavity wall of the cable stop length adjusting base 24 and the cable stop length adjusting body 25, and the cylindrical sliding hole 64 of the thick cylindrical part of the hydraulic drive cover plate 56. The upward inclination angle of the upper part of the tooth profile line of the layered sawtooth 47 and the tooth groove contour line of the layered sawtooth groove 44 along the axis is greater than the downward inclination angle of the lower part along the axis, which is convenient for the layered sawtooth 47 to quickly cut into the layered sawtooth groove 44 of each tapered block 37 during the locking operation of the quick cable stopper and the separation of the layered sawtooth 47 from the layered sawtooth groove 44 during the unlocking operation, and realizes the self-locking between the layered sawtooth 47 and the layered sawtooth groove 44 of each tapered block 37 during the locking operation.

[0069] The upper joint 45 of the adjusting column is composed of a cylindrical short joint body 51 and an upper locking joint 52, while the lower joint 48 of the adjusting column is composed of a cylindrical long joint body 50 and a lower locking joint 49. The top end of the adjusting column body 46 is connected to the upper locking joint 52 through the cylindrical short joint body 51, and its bottom end is connected to the lower locking joint 49 through the cylindrical long joint body 50, thus connecting the sawtooth adjusting column 4 into a whole. The sawtooth adjusting column 4 is connected to the main lifting rope joint of the crane during the installation operation through the upper locking joint 52 of the upper joint 45 of the adjusting column. The bottom of the quick cable stopper is connected to the all-steel cable tension leg through the lower locking joint 49 of the lower joint 48 of the adjusting column and the steel cable locking joint. Both the upper locking joint 52 and the lower locking joint 49 are composed of a tapered short section and a hemispherical short section head. Then, two milling planes are machined on both sides of the upper locking joint 52 and the lower locking joint 49. The center lines of the two milling planes of the upper locking joint 52 and the lower locking joint 49 and the axis of the sawtooth adjusting column 4 are parallel to each other; at the same time, both the upper locking joint 52 and the lower locking joint 49 are drilled with cylindrical lock holes, and the axis of the cylindrical lock hole of the upper locking joint 52 is perpendicular to and intersects the two milling planes of the upper locking joint 52, and the axis of the cylindrical lock hole of the lower locking joint 49 is perpendicular to and intersects the two milling planes of the lower locking joint 49.

[0070] Briefly speaking, the adjusting column upper joint 45, adjusting column body 46, laminated saw teeth 47 and adjusting column lower joint 48 of the saw tooth adjusting column 4 are integrally forged. The outer surface of the adjusting column body 46 is machined throughout to form laminated saw teeth 47 arranged in layers. The tooth profile line of the laminated saw teeth 47 and the tooth groove contour line of the laminated saw tooth grooves 44 of the tapered clamping block 37 are specially designed to facilitate the quick cutting-in, detachment and self-locking operations between each laminated saw tooth 47 and the laminated saw tooth grooves 44. At the same time, the saw tooth adjusting column 4 is connected to the main hoisting rope joint of the crane during the installation operation through the upper locking joint 52. The bottom of the quick cable stopper is connected to the all-steel cable tension leg through the lower locking joint 49 and the steel cable locking joint.

[0071] It should be noted that the design of the lower locking joint 49 needs to consider factors such as the maximum tension, maximum fatigue stress borne by the all-steel cable tension leg under extreme working conditions, and the specifications of the steel cable locking joint. The design of the upper locking joint 52 needs to consider factors such as the maximum tension borne by the all-steel cable tension leg during the installation operation, the maximum pulling force of the crane, and the specifications of the main hoisting rope joint of the crane. The design of the tooth height, tooth width and tooth pitch of the laminated saw teeth 47 needs to consider factors such as the maximum tension, maximum fatigue stress, maximum contact stress borne by the all-steel cable tension leg under extreme working conditions, and the length adjustment accuracy of the quick cable stopper. The maximum outer diameter of the adjusting column body 46 needs to be consistent with the innermost cavity wall of components such as the deviation adjusting column tube 13, the cable stopper length adjusting base 24, the cable stopper length adjusting body 25 and the hydraulic drive cover plate of the hydraulic drive system 5.

[0072] Refer to Figure 8 and Figure 9 , the hydraulic drive system 5 provides power for the tapered self-locking device 3 based on the hydraulic cylinder 53. It includes a hydraulic cylinder 53, a hydraulic drive cover plate 56, an axial push sliding ring 58, a hydraulic drive push rod 57, a crane sliding rod 59, a hydraulic drive support 54 and a hydraulic drive limit pin 55.

[0073] The hydraulic drive cover plate 56 is welded into one body after being fitted with the variable cross-section cylindrical groove 27 at the top of the cable stopper length adjusting end cover 26, so as to fix the entire hydraulic drive system 5 to the cable stopper length adjuster 2. A thick cylindrical sliding hole 64 is drilled in the central part of the hydraulic drive cover plate 56, and hydraulic drive cylindrical sliding holes 63 are drilled around the hydraulic drive cover plate 56 and arranged evenly in a circle. Each hydraulic drive cylindrical sliding hole 63 is equipped with a hydraulic drive push rod 57 and a crane sliding rod 59, and each hydraulic drive push rod 57 and crane sliding rod 59 are arranged at intervals. Each hydraulic drive push rod 57 of the hydraulic drive system 5 is equipped with an independent hydraulic cylinder 53. Each hydraulic cylinder 53 is placed along the axial direction of the saw tooth adjusting column to realize the axial reciprocating movement of the axial push sliding ring 58. The hydraulic oil of all independent hydraulic cylinders 53 is uniformly supplied and distributed through the main oil pump and the multi-way directional control valve 76 to complete the automatic synchronous axial propulsion function.

[0074] The hydraulic drive push rod 57 is composed of a push rod positioning block 71 and a push rod sliding column 70 and is integrally connected by circumferential welding. The crane sliding rod 59 is composed of a sliding rod positioning block 62, a sliding rod sliding column 61 and a lifting rope locking ring 60. Between the sliding rod positioning block 62 and the sliding rod sliding column 61, circumferential welding is adopted. At the same time, between the sliding rod sliding column 61 and the lifting rope locking ring 60, threaded connection is adopted, so as to connect the crane sliding rod 59 into one body. The crane sliding rod 59 is connected to the auxiliary lifting rope joint of the crane during the installation operation through the lifting rope locking ring 60. Both the push rod positioning block 71 and the sliding rod positioning block 62 are made of square steel blocks, and both the push rod sliding column 70 and the sliding rod sliding column 61 are made of cylindrical steel columns. The push rod sliding column 70 of each hydraulic drive push rod 57 and the sliding rod sliding column 61 of the crane sliding rod 59 are precisely matched with the hydraulic drive cylindrical sliding holes 63 of the corresponding hydraulic drive cover plate 56 at the same time, forming a cylindrical surface moving pair evenly arranged along the circumferential direction.

[0075] Two planes are milled at the top of the push rod sliding column 70 and fine round holes are drilled. An opening pin 69 is configured for the push rod sliding column 70 of each hydraulic drive push rod 57 to connect the hydraulic drive push rod 57 with the piston rod of the hydraulic cylinder 53. Coarse round holes are drilled in the upper part of each push rod sliding column 70, and coarse round holes of the same size are also drilled in the lower parts of the two side plates of each hydraulic drive support 54. Each hydraulic drive limit pin 55 is matched with the coarse round hole of the corresponding push rod sliding column 70 and the coarse round hole of the hydraulic drive support 54 at the same time, so as to realize the secondary fixation after the self-locking of the layered sawtooth 47 and the layered sawtooth groove 44 of each conical clamping block 37 during the locking operation.

[0076] The axial push sliding ring 58 is milled with variable-section axial push grooves 72 evenly arranged along the circumferential direction. Each variable-section axial push groove 72 is sequentially composed of an axial push cylindrical hole groove 73 and an axial push square hole groove 74 from top to bottom. Each axial push cylindrical hole groove 73 is matched with the corresponding push rod sliding column 70 and sliding rod sliding column 61. At the same time, each axial push square hole groove 74 is matched with the corresponding push rod positioning block 71 and sliding rod positioning block 62. And the variable-section joint of each variable-section axial push groove 72 is closely attached to the shoulder of the hydraulic drive push rod 57 and the crane sliding rod 59, so as to connect the axial push sliding ring 58 with each hydraulic drive push rod 57 and the crane sliding rod 59 into one body by means of circumferential welding.

[0077] The bottom end face of the axial thrust sliding ring 58 is ground into a plane, and its outer side surface is successively composed of a cylindrical surface, an inverted conical surface, and a conical surface from top to bottom. On the conical surface where the outer side surface of the axial thrust sliding ring 58 is located, middle axial thrust sliding blocks 75 are arranged uniformly along the circumferential direction. Each middle axial thrust sliding block 75 of the axial thrust sliding ring 58 is precisely matched with the middle self-locking sliding groove 40 of the corresponding conical sliding block 38 to form a middle inclined plane moving pair arranged uniformly along the circumferential direction. At the same time, the bottom end face of the axial thrust sliding ring 58 is precisely matched with the horizontal plane where the outer side surface of each conical clamping block 37 is located radially and the horizontal plane where the inner side surface of each conical sliding block 38 is located radially to form a middle horizontal plane moving pair. The middle horizontal plane moving pair and each middle inclined plane moving pair are arranged intersectingly.

[0078] The liquid drive support 54 is made of a U-shaped steel block and placed with its opening facing downwards. Each liquid drive push rod 57 and the crane slide rod 59 are each configured with a liquid drive support 54, and the liquid drive support 54 is integrally connected to the liquid drive cover plate 56 by welding. The two side plates of each liquid drive support 54 are symmetrically arranged on both sides of the liquid drive push rod 57 and the crane slide rod 59. The top plate of the liquid drive support 54 is connected to the cylinder barrel 65 of the hydraulic cylinder 53 by screws. Each cylinder barrel 65 is equipped with a cylinder barrel oil inlet 66 and a cylinder barrel oil return port 67.

[0079] Briefly speaking, the push rod sliding column 70 of the liquid drive force system 5 is configured with a split pin 69 and connects the liquid drive push rod 57 to the piston rod 68 of the hydraulic cylinder 53. The axial thrust cylindrical hole groove 73 of each variable cross-section axial thrust groove 72 is matched with the corresponding push rod sliding column 70 and the slide rod sliding column 61. At the same time, the axial thrust square hole groove 74 of each variable cross-section axial thrust groove 72 is matched with the corresponding slide rod positioning block 62 and the push rod positioning block 71. Thus, each liquid drive push rod 57 and the crane slide rod 59 are connected to the axial thrust sliding ring 58 as a whole by means of circumferential welding. The crane slide rod 59 is connected to the auxiliary lifting rope joint of the crane in the installation operation through a lifting rope lock ring 60. The cylinder barrel 65 of the hydraulic cylinder 53, its cylinder barrel oil inlet 66 and the cylinder barrel oil return port 67 are fixed to the top plate of the liquid drive support 54 by screws. Each liquid drive limit pin 55 is simultaneously matched with the thick oval hole of the push rod sliding column 70 and the thick oval hole of the liquid drive support 54, so as to realize the secondary fixation after the layer-shaped sawtooth 47 and each layer-shaped sawtooth groove 44 are self-locked in the locking operation. Each slide rod sliding column 61 and the push rod sliding column 70 are simultaneously precisely matched with the liquid drive cylindrical sliding hole 63 to form a cylindrical surface moving pair. There is an interference fit between the cylindrical surface where the top surface of the layer-shaped sawtooth 47 is located and the cylindrical surfaces where the innermost cavity walls of the alignment adjusting column tube 13, the cable stop and length adjusting base 24, and the cable stop and length adjusting body 25 are located, as well as the cylindrical surface where the thick cylindrical sliding channel 64 is located. Each middle axial thrust sliding block 75 is precisely matched with the middle self-locking sliding groove 40 of the conical sliding block 38 to form a middle inclined plane moving pair. At the same time, there is a precise fit between the axial thrust sliding ring 58 and each conical clamping block 37 and the conical sliding block 38 to form a middle horizontal plane moving pair. The middle horizontal plane moving pair and each middle inclined plane moving pair are arranged intersectingly.

[0080] It should be noted that the hydraulic driving system 5 provides power for the conical self-locking device 3 based on the hydraulic cylinder 53 and is connected to the cable stop length adjuster 2 through the hydraulic drive cover plate 56. The selection of components such as the cylinder barrel 65 and the piston rod 68 in the hydraulic cylinder 53, as well as the design of the hydraulic drive cover plate 56, the hydraulic drive push rod 57, and the shaft push sliding ring 58, need to consider factors such as the total weight of each moving part during installation and disassembly operations, the maximum tension applied by the all-steel cable tension leg, the maximum radial displacement and maximum axial displacement of the conical self-locking device 3, and the maximum friction force between each layer of serrated teeth 47 and the serrated tooth grooves 44. The design of the crane sliding rod 59 needs to consider factors such as the maximum tension borne by the all-steel cable tension leg during automatic unlocking and disassembly operations, the maximum pulling force of the crane, and the specification of the auxiliary lifting rope joint of the crane.

[0081] In Figure 10 the hydraulic drive shaft push automatic locking and length adjustment installation operation process of the quick cable stop is as follows: The crane provides power and successively tightens the all-steel cable tension leg upward through the main lifting rope, the main lifting rope joint, the serrated adjustment column 4, and the steel cable lock joint to be in a tension state. And through the mutual cooperation between the serrated teeth 47 of the serrated adjustment column 4 and the serrated tooth grooves 44 of the conical locking blocks 37 in the conical self-locking device 3 on the floating wind power platform, the length adjustment installation operation of the quick cable stop on the floating wind power platform is realized, and the serrated adjustment column 4 completes the axial length adjustment of Δh; then, the hydraulic oil of all independent hydraulic cylinders 53 of the hydraulic driving system 5 on the floating wind power platform is uniformly supplied and distributed through the main oil pump and the multi-way directional control valve 76. The oil inlet 66 of the cylinder barrel of the hydraulic cylinder 53 is supplied with oil while the oil return port 67 of the cylinder barrel returns oil. The power of the hydraulic cylinder 53 passes through the piston rod 68, and the hydraulic drive push rod 57 and the shaft push sliding ring 58 of the hydraulic driving system 5 push the conical self-locking device 3 downward along the axis. Based on the cylindrical moving pair between the push rod sliding column 70 of each hydraulic drive push rod 57 and the hydraulic drive cylindrical sliding hole 63 of the hydraulic drive cover plate 56, and the middle horizontal plane moving pair between the shaft push sliding ring 58 and each conical locking block 37 and conical sliding block 38, and at the same time cooperating with the lower inclined plane moving pairs and upper inclined plane moving pairs arranged in parallel on the upper and lower layers, the conical locking blocks 37 and conical sliding blocks 38 move obliquely downward. Then, the serrated teeth 47 of the serrated adjustment column 4 quickly cut into the serrated tooth grooves 44 of each conical locking block 37 in the conical self-locking device 3, realizing the hydraulic drive shaft push automatic locking installation operation of the quick cable stop on the floating wind power platform, and completing the self-locking between the serrated teeth 47 and the serrated tooth grooves 44 of each conical locking block 37; finally, each hydraulic drive limit pin 55 of the hydraulic driving system 5 cooperates with the oval holes of the corresponding push rod sliding column 70 and the oval holes of the hydraulic drive support 54 at the same time, so as to realize the secondary fixation after the self-locking between the serrated teeth 47 of the serrated adjustment column 4 and each conical locking block 37, and successively loosen the screws on each hydraulic drive support 54, pull out the split pin 69 on the hydraulic drive push rod 57, and disassemble components such as the cylinder barrel 65 and the piston rod 68 of each hydraulic cylinder 53.

[0082] In Figure 11 it, the hydraulic drive shaft push automatic unlocking and disassembly operation process of the quick cable stopper is as follows: The crane provides power and successively tightens the full steel cable tension leg upward and keeps it hovering through the main hoisting rope, the main hoisting rope joint, the sawtooth adjusting column 4, and the steel cable lock joint. Then, it successively tightens the conical self-locking device 3 upward along the axis through the auxiliary hoisting rope, the auxiliary hoisting rope joint, the crane slide rod 59 of the hydraulic drive system 5, and the shaft push sliding ring 58. At the same time, the cylinder inlet 66 of all independent hydraulic cylinders 53 of the hydraulic drive system 5 on the floating wind power platform returns oil while the cylinder return port 67 is connected to oil. The power of the hydraulic cylinder 53 passes through the piston rod 68 and the hydraulic drive push rod 57 and the shaft push sliding ring 58 of the hydraulic drive system 5 to tighten the conical self-locking device 3 upward along the axis. According to the cylindrical moving pair between the push rod sliding column 70 of each hydraulic drive push rod 57 and the slide rod sliding column 61 of the crane slide rod 59 and the hydraulic drive cylindrical sliding hole 63 of the hydraulic drive cover plate 56, and the middle inclined plane moving pair between each middle shaft push sliding block 75 of the shaft push sliding ring 58 and the middle self-locking sliding groove 40 of the conical sliding block 38 of the conical self-locking device 3, and at the same time, cooperating with the lower inclined plane moving pairs and the upper inclined plane moving pairs arranged in parallel on the upper and lower layers, the conical clamping block 37 and the conical sliding block 38 of the conical self-locking device 3 move obliquely upward. Then, the layered sawtooth 47 of the sawtooth adjusting column 4 quickly disengages from the layered sawtooth groove 44 of each conical clamping block 37 in the conical self-locking device 3, completing the hydraulic drive shaft push automatic unlocking operation of the quick cable stopper on the floating wind power platform; Finally, loosen all the nuts between the angle adjustment body 9 of the spherical alignment device 1 and the floating wind power platform, the crane continues to provide power, and hoists the entire spherical alignment device 1, the cable stop length adjuster 2, the conical self-locking device 3, and the hydraulic drive system 5 upward together through the auxiliary hoisting rope, the auxiliary hoisting rope joint, the crane slide rod 59, the shaft push sliding ring 58, and the hydraulic drive cover plate 56 to complete the disassembly operation.

[0083] In Figure 12In the above, the operation process of the spherical pair follow-up centering and deviation adjustment of the quick cable stopper is as follows. Under the action of ocean currents, the quick cable stopper in the in-position state can be adjusted for the rotation angle. At this time, the fully steel cable tension leg bears the oblique tension and is transmitted to the adjusting column body 46 of the saw-tooth adjusting column 4 through the steel cable locking joint and the lower joint 48 of the adjusting column of the saw-tooth adjusting column 4, and then is transmitted to the angle adjustment body 9 of the upper cable stopper adjuster 2 and the spherical deviation adjuster 1 on the floating wind power platform through the layered saw-tooth 47 of the saw-tooth adjusting column 4 and the layered saw-tooth grooves 44 of the conical blocks 37 in the conical self-locking device 3. According to the spherical pair formed between the hemispherical surface where the outer surface of the deviation adjustment spherical tube 12 of the spherical deviation adjuster 1 is located and the hemispherical surface where the inner ring surface of the split alloy bushing 6 is located and their precise fit, the angle adjustment of the quick cable stopper on the floating wind power platform is realized and the operation of the spherical pair follow-up centering and deviation adjustment is completed. Moreover, the entire angle adjustment body 9 of the spherical deviation adjuster 1, the cable stopper adjuster 2, the conical self-locking device 3, the saw-tooth adjusting column 4 and the hydraulic driving system 5 follow up and center together and adjust the angle of Δθ. During the operation, the self-lubricating wear-resistant columns 19 embedded in the respective lubricating round holes 23 of the split alloy bushing 6 of the spherical deviation adjuster 1 cooperate with the respective oil storage grooves 16 of the angle adjustment body 9 to achieve friction reduction and resistance reduction of the angle adjustment body 9.

[0084] The above further describes the present invention with the aid of specific embodiments. However, it should be understood that the specific description here should not be construed as a limitation on the essence and scope of the present invention. Various modifications made by those of ordinary skill in the art to the above embodiments after reading this specification all fall within the scope protected by the present invention.

Claims

1. A quick cable stopper applied to the tension leg system of offshore wind power, characterized in that, It includes a cable stop length adjuster, a conical self-locking device, a serrated adjusting column and a hydraulic driving system. The cable stop length adjuster and the hydraulic driving system are arranged from bottom to top. The conical self-locking device is placed in the annular cavity of the cable stop length adjuster. The serrated adjusting column penetrates through the cable stop length adjuster and the conical self-locking device and is located at the axis. Wherein: The cable stop length adjuster includes a cable stop length base, a cable stop length body and a cable stop length end cover which are fixedly connected in sequence from bottom to top. An annular cavity is formed between the cable stop length body and the cable stop length end cover. An upper adjusting sliding groove is provided on the upper top surface of the annular cavity, and a lower adjusting sliding groove is provided on the lower bottom surface of the annular cavity. The upper adjusting sliding groove and the lower adjusting sliding groove are arranged in parallel; The conical self-locking device includes a conical clamping block and a conical sliding block fixed on the outer side of the conical clamping block. A layered serrated groove is formed on the inner side surface of the conical clamping block; The conical sliding block includes an upper self-locking sliding block, and the upper self-locking sliding block and the upper adjusting sliding groove cooperate to form an upper inclined plane moving pair; A lower self-locking sliding block matched with the lower adjusting sliding groove is arranged at the bottom ends of the conical clamping block and the conical sliding block. The lower self-locking sliding block and the lower adjusting sliding groove cooperate to form a lower inclined plane moving pair. The lower inclined plane moving pair and the upper inclined plane moving pair are arranged in parallel; The serrated adjusting column includes an adjusting column body, an adjusting column upper joint and an adjusting column lower joint respectively connected to the upper and lower ends of the adjusting column body. A layered serrated tooth is arranged on the outer side surface of the adjusting column body, and the layered rectangular tooth is adapted to the layered rectangular groove; The hydraulic driving system is connected to the conical self-locking device and is used to drive the conical self-locking device to move radially to lock or unlock with the serrated adjusting column.

2. The quick cable stopper applied to the offshore wind power tension leg system according to claim 1, wherein A spherical alignment device is fixedly connected to the lower end of the cable stop length base. The spherical alignment device includes an angle alignment body, a split alloy bushing, an alignment base and an alignment end cover. Wherein: The angle alignment body includes an alignment spherical tube and an alignment column tube fixed to the upper end of the alignment spherical tube; The split alloy bushing includes a lower alloy bushing, a self-lubricating wear-resistant column and an upper alloy bushing ring. The upper alloy bushing ring is arranged between the alignment end cover and the alignment spherical tube, and the lower alloy bushing is arranged between the alignment base and the alignment spherical tube; The inner ring surface of the lower alloy bushing and the outer surface of the alignment spherical tube cooperate to form a spherical pair. Self-lubricating round holes arranged in layers from top to bottom are provided on the hemisphere where the inner ring surface of the lower alloy bushing is located, and the self-lubricating wear-resistant column is embedded into the self-lubricating round holes.

3. The quick cable stopper applied to the offshore wind power tension leg system according to claim 2, wherein An alignment thrust surface is provided at the bottom end of the alignment spherical tube. The plane where the alignment thrust surface is located is a regular circular surface. The center of the hemisphere where the outer surface of the alignment spherical tube is located coincides with the center of the hemisphere where the inner ring surface of the lower alloy bushing is located, and the center of the sphere is located at the intersection of the plane where the upper end surface of the alignment base is located and the axis of the alignment column tube; The alignment spherical tube and the upper alloy bushing ring as well as the alignment spherical tube and the alignment end cover both adopt clearance fits.

4. The quick cable stopper applied to the tension leg system of offshore wind power according to claim 2, characterized in that, On the lower hemispherical surface of the sphere center where the outer surface of the deflection spherical tube is located, two rows of oil storage grooves are milled. Each row of oil storage grooves is parallel to the plane where the contour line is located, and the two rows of oil storage grooves are vertically and intersectingly arranged with each other. The oil storage grooves are kept connected and filled with grease.

5. The quick cable stopper applied to the offshore wind power tension leg system according to claim 2, characterized in that, The inner ring surface of the upper alloy lining ring is processed into a concave hemispherical surface, and a columnar snap ring of the alloy bushing is provided at the top of its outer surface. The inner ring surface of the deflection end cover is provided with a hemispherical surface and a columnar clamping groove of the deflection end cover from top to bottom. An interference fit is adopted between the columnar snap ring of the alloy bushing and the columnar clamping groove of the deflection end cover to embed the upper alloy lining ring into the deflection end cover. Screwdriver holes are drilled around the deflection end cover and arranged uniformly in the circumferential direction, and the deflection end cover is fixed to the top of the deflection base through screws.

6. The quick cable stopper applied to the offshore wind power tension leg system according to claim 1, characterized in that The inner side surface of the conical sliding block includes an inverted cone surface, a conical surface, a horizontal surface and a concave cylindrical surface from top to bottom. The upper self-locking sliding block is provided on the inverted cone surface where the inner side surface of the conical sliding block is located, a middle self-locking sliding groove is provided on the conical surface, and a self-locking strip-shaped block is provided on the concave cylindrical surface. The outer side surface of the conical block includes a conical surface, a horizontal surface and a convex cylindrical surface from top to bottom. The horizontal surface where the outer side surface of the conical block is located coincides with the horizontal surface where the inner side surface of the conical sliding block is located, and a self-locking strip-shaped groove is provided on the convex cylindrical surface where the outer side surface of the conical block is located. An interference fit is adopted between the self-locking strip-shaped groove of the conical block and the corresponding self-locking strip-shaped block of the conical sliding block.

7. The quick cable stopper applied to the offshore wind power tension leg system according to claim 2, characterized in that, The outer surface of the adjusting column body is generally made into layer-shaped sawtooth arranged in layers. The tooth profile line at the cross-section of each layer-shaped sawtooth presents a sawtooth shape. A clearance fit is adopted between the cylindrical surface where the tooth top surface of the layer-shaped sawtooth is located and the adjusting column tube of the angle deflection body, the outermost layer cavity wall of the cable stop length adjustment base and the cable stop length adjustment body. The inclination angle of the upper segment along the axis of the tooth profile line of the layer-shaped sawtooth and the tooth groove contour line of the layer-shaped sawtooth groove is greater than the inclination angle of the lower segment along the axis and is inclined downward, so that the layer-shaped sawtooth can quickly cut into the layer-shaped sawtooth groove of the conical block during the locking operation of the quick cable stop and quickly disengage from the layer-shaped sawtooth groove during the unlocking operation.

8. The quick cable stopper applied to the offshore wind power tension leg system according to claim 1, wherein, The hydraulic driving system includes a hydraulic cylinder, a hydraulic driving cover plate, an axial push sliding ring, a hydraulic driving push rod and a crane sliding rod. The hydraulic driving cover plate is fixed as a whole after being fitted with the variable cross-section cylindrical groove at the top end of the cable stop length adjustment end cover. A thick cylindrical sliding hole passage is drilled at the central part of the hydraulic driving cover plate. A clearance fit is adopted between the cylindrical surface where the tooth top surface of the layer-shaped sawtooth is located and the thick cylindrical sliding hole passage. The hydraulic driving cover plate is provided with hydraulic driving cylindrical sliding holes arranged uniformly in the circumferential direction. The hydraulic driving push rod and the crane sliding rod are arranged in the hydraulic driving cylindrical sliding holes, and the hydraulic driving push rod and the crane sliding rod are arranged at intervals. Each hydraulic driving push rod is configured with an independent hydraulic cylinder. The hydraulic cylinder drives the axial reciprocating movement of the axial push sliding ring, and the reciprocating movement of the axial push sliding ring drives the conical self-locking device to reciprocate. The hydraulic oil of all independent hydraulic cylinders is uniformly supplied and distributed through the main oil pump and the multi-way reversing valve to complete the automatic synchronous axial propulsion function.

9. The quick cable stopper applied to the offshore wind power tension leg system according to claim 8, characterized in that The hydraulic drive push rod is composed of a push rod positioning block and a push rod sliding column. The crane sliding rod is composed of a sliding rod positioning block, a sliding rod sliding column and a lifting rope locking ring. The push rod sliding column of the hydraulic drive push rod and the sliding rod sliding column of the crane sliding rod are simultaneously and precisely fitted with the hydraulic cylindrical sliding holes of the corresponding hydraulic drive cover plates to form a cylindrical surface moving pair arranged uniformly along the circumferential direction.

10. The quick cable stopper applied to the tension leg system of offshore wind power according to claim 8, characterized in that, The bottom end surface of the axial push sliding ring is ground into a plane, and its outer side surface is successively composed of a cylindrical surface, an inverted conical surface and a conical surface from top to bottom. A middle axial push sliding block is arranged on the conical surface where the outer side surface of the axial push sliding ring is located. Each middle axial push sliding block of the axial push sliding ring is precisely fitted with the middle self-locking sliding groove of the corresponding conical sliding block to form a middle inclined plane moving pair arranged uniformly along the circumferential direction. At the same time, the bottom end surface of the axial push sliding ring is precisely fitted with the horizontal planes where the outer side surfaces of each conical clamping block are located in the radial direction and the horizontal planes where the inner side surfaces of the conical sliding blocks are located to form a middle horizontal plane moving pair. The middle horizontal plane moving pair and the middle inclined plane moving pair are arranged intersectingly.

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