Offshore single-pile anti-scouring row device

Abstract

The invention discloses an offshore single pile anti-scouring row device, which belongs to the technical field of offshore platform pile foundation protection and comprises a fixing ring, the fixing ring is sleeved outside a foundation pile, and the inner diameter of the fixing ring is larger than the outer diameter of the foundation pile. The supporting pieces composed of the fixing sleeves, the sliding rods, the connecting steel wires, the contraction grooves and the traction springs are evenly arranged between the bottom of the high-strength geotextile with the holes and the fixing ring in an annular array mode, spokes of the supporting pieces are gathered to the fixing ring, and in addition, the connecting steel wires, away from the fixing ring, on the supporting pieces are connected with the suspension mechanism. In the installation process of the device, a crane is connected with a suspension mechanism, a connecting steel wire can be pulled, a sliding rod located in a fixing sleeve is moved to the position between the two sets of fixing sleeves, at the moment, the porous geotechnical cloth is in an unfolded state, and when the porous geotechnical cloth descends to the bottom of a foundation pile, the porous geotechnical cloth can be circularly unfolded; and the laying effect of the geotextile with the holes is ensured.

Description

Technical Field

[0001] The invention relates to an anti-scour coupling device, in particular to an offshore single pile anti-scour coupling device, and belongs to the technical field of marine platform pile foundation protection. Background Art

[0002] In marine engineering, most oil platforms are based on pile structures. The establishment of the platform changes the original hydrodynamic conditions in this area, forming secondary flow in front of the pile and vortex around it. The flow speed around the pile is accelerated, causing the start and migration of sediment, which will cause local scouring of the seabed soil around the pile, forming scouring pits, and thus affecting the stability of the platform.

[0003] In the prior art, for example, the utility model with application number 202222691100.6 discloses a pile foundation scour protection device. In order to solve the scour problem, stone or sandbags are used for protection. Stones often collide with the single pile foundation, causing damage to the single pile foundation. The cost of laying bionic grass is relatively high. To lay cement interlocking rows, multiple interlocking row monomers need to be laid in sequence around the pile foundation, overlapping each other and surrounding the pile foundation for a week. The construction is cumbersome, and a single interlocking row monomer is easily washed up by the seabed current. There is a large gap between the interlocking row and the outer wall of the pile foundation, which is easy to form eddies and cause local serious scour problems. The interlocking row is a soft row structure, which can adapt to the changes of the seabed and prevent the bottom from being hollowed out. By setting a soft bushing, the gap between the root of the pile foundation and the interlocking row can be closed, isolating the scouring of the seabed around the pile foundation by the current, preventing the loss of sediment, and further enhancing the protection effect. At the same time, the soft material of the soft bushing can avoid damage to the pile foundation during construction and installation.

[0004] Similar to the above-mentioned pile foundation scour protection device, there are still some shortcomings:

[0005] Although the chain row is connected as a whole, it is a soft structure as a whole. During the laying process, after the chain row is placed under the pile body, it is in a weak state and cannot automatically stretch outward. It is necessary to manually dive to the bottom of the foundation pile to adjust the position. The installation is very inconvenient, and the depth of the foundation pile is not fixed. Artificial seabed operations have great safety hazards. In addition, concrete blocks are used to increase the counterweight on the top of the chain row, and its bottom is in a fit with the seabed, and the connection stability is low.

[0006] Therefore, an offshore single pile anti-scour coupling device is designed to optimize the above problems. Summary of the invention

[0007] The main purpose of the present invention is to provide an offshore single pile anti-scour coupling device, which is used to solve the problem of unreliable anti-scour and difficult installation. Between the bottom of the perforated geotextile and the fixed ring, a support member composed of a fixed sleeve, a slide rod, a connecting wire, a shrinkage groove, and a pulling spring is evenly arranged in a ring array, and the spokes of the support member are gathered to the fixed ring. In addition, the connecting wire on the support member away from the fixed ring is connected to the suspension mechanism, so that during the installation process, the device is connected to the suspension mechanism through a crane, which can cause pulling on the connecting wire and move the sliding rod inside the fixed sleeve to between the two groups of fixed sleeves. At this time, the perforated geotextile is in an unfolded state. When the perforated geotextile descends to the bottom of the foundation pile, it can be unfolded in a circular shape to ensure the laying effect of the perforated geotextile. After the crane is separated from the suspension mechanism, the pulling spring can automatically retract the sliding rod to the inside of the fixed sleeve, and the perforated geotextile returns to a soft state and can fit tightly to the bottom of the sea. The installation of the device does not require manual diving operations, which improves the installation speed and is more practical. By arranging annular reinforcement ribs on the top of the perforated geotextile and evenly arranging double-strand nylon ropes between the annular reinforcement ribs, marine organisms such as seaweed or coral can be clamped and fixed by the double-strand nylon ropes during use, and the growth of marine organisms can be used to increase the connection stability between the perforated geotextile and the seabed, improve the regional environment and reduce the seawater flow rate in the sea area. It is more practical. By arranging a plug-in positioning mechanism composed of a chassis, a rack, a gear, a screw, a polygonal slide, and a rectangular inner screw tube at the bottom of the fixing ring, the gravity when the fixing ring is pressed down can be used during the installation of the device to automatically control the linear sliding of the rectangular inner screw tube and fit it on the surface of the foundation pile, thereby improving the stability of the device in the initial installation.

[0008] The above paragraph is not clearly structured. The new device is not clearly described in terms of its superiority in preventing scours and its cheapness in installation.

[0009] An offshore single pile anti-scour coupling device comprises a fixing ring, which is sleeved on the outside of a foundation pile, and the inner diameter of the fixing ring is larger than the outer diameter of the foundation pile, a geotextile with holes is fixed to the outer side of the fixing ring, and the shape of the geotextile with holes is annular, and the bottom of the geotextile with holes is evenly provided with support members in an annular array, and the extension lines of the support members intersect at the center of the fixing ring, and the outer side of the geotextile with holes is evenly provided with suspension mechanisms, and the top of the inner side of the fixing ring is provided with a sealing shielding member that fits with the side of the foundation pile, the bottom end of the fixing ring is provided with a plug-in positioning mechanism connected to the seabed, and the top of the geotextile with holes is provided with a slow flow fixing component.

[0010] Preferably: the support member includes a cloth cover, a fixed sleeve, a sliding rod, a connecting steel wire, a shrinkage groove and a tension spring, the cloth cover is fixed on the perforated geotextile, and the interior of the cloth cover is hollow, the interior of the cloth cover is evenly fixed with fixed sleeves along the length direction, the interior of the fixed sleeve is slidably installed with sliding rods, the ends of the sliding rods are provided with connecting steel wires, and adjacent sliding rods are fixedly connected by connecting steel wires, shrinkage grooves are evenly opened on the outside of the fixing ring, and tension springs are fixed on the inner ends of the shrinkage grooves, and the ends of the tension springs are connected to the ends of the connecting steel wires, and the connecting steel wires inside the cloth cover away from one end of the fixing ring extend to the outside of the cloth cover and are connected to the suspension mechanism.

[0011] Preferably: the suspension mechanism includes a sleeve, a hanging ring, a fixed block, a vertical rod, a first conical block, a limiting groove, a trapezoidal plug block, a return spring and a second conical block; the fixed block is fixed to the end of the connecting steel wire, the top of the fixed block is vertically fixed with the vertical rod, the top of the vertical rod is fixed with the first conical block, the second conical block is slidably arranged on the vertical rod, the first conical block and the second conical block are symmetrically arranged, the outer side of the first conical block is sleeved with a sleeve, the top of the sleeve is fixed with a hanging ring, the bottom of the inner side of the sleeve is evenly provided with limiting grooves, the inside of the limiting grooves are all slidably installed with trapezoidal plug blocks that fit with the bottom of the first conical block, and a return spring is arranged between the trapezoidal plug block and the end of the limiting groove.

[0012] Preferably, the diameter of the top end of the second conical block is greater than the diameter of the bottom end of the first conical block, and the top of the second conical block is provided with a groove having the same diameter as that of the bottom end of the first conical block.

[0013] Preferably: the sealing shielding member includes a rubber shield and a traction wire, the rubber shield is evenly fixed on the top of the fixing ring in a circular array, and the sides of adjacent rubber shields fit together, the outer sides of the rubber shields are installed with traction wires, and the ends of the traction wires away from the rubber shields are connected to the connecting steel wires inside the shrinkage groove.

[0014] Preferably: the inner side of the fixing ring is evenly provided with mounting grooves, the inner ends of the mounting grooves are all provided with extrusion springs, the open ends of the mounting grooves are all provided with balls, and the balls are rotatably installed inside the mounting grooves, and the ends of the extrusion springs are in contact with the sides of the balls.

[0015] Preferably: the slow-flow fixing component includes annular reinforcement ribs, double-strand nylon ropes and marine organisms. There are two groups of annular reinforcement ribs, and the inner diameters of the two groups of annular reinforcement ribs are different. The two groups of annular reinforcement ribs are fixed on the top of the perforated geotextile. Double-strand nylon ropes are evenly fixed between the two groups of annular reinforcement ribs, and marine organisms are clamped and installed inside the double-strand nylon ropes.

[0016] Preferably: the plug-in positioning mechanism includes a chassis, a rack, a gear, a screw, a polygonal slide groove and a rectangular inner screw tube. The chassis is arranged parallel to the bottom of the fixed ring, and the bottom of the fixed ring is evenly and vertically installed with a rack, and the rack passes through the chassis and is slidably connected to the chassis. A gear meshing with the rack is rotatably installed inside the chassis, and the teeth on the side of the rack do not extend to the bottom end of the rack. Polygonal slide grooves are evenly opened on the inner side of the chassis, and rectangular inner screw tubes are slidably installed inside the polygonal slide grooves, and screws threadedly connected to the rectangular inner screw tube are fixed on the sides of the gears.

[0017] Preferably, the bottom end of the rack is conical, and the end of the rectangular inner spiral tube away from the rack is provided with anti-slip grooves.

[0018] Preferably, counterweights are evenly fixed on the outer side of the bottom of the perforated geotextile in a circular array.

[0019] The beneficial effects of the present invention are:

[0020] The invention provides an offshore single pile anti-scour coupling device, wherein a support member composed of a fixed sleeve, a sliding rod, a connecting wire, a shrinkage groove, and a pulling spring is uniformly arranged in an annular array between the bottom of the perforated geotextile and the fixing ring, and the spokes of the support member are gathered at the fixing ring, and the connecting wire on the support member away from the fixing ring is connected to the suspension mechanism, so that during the installation process of the device, the connecting wire can be pulled by connecting the device with the suspension mechanism through the crane, and the sliding rod located inside the fixing sleeve can be moved between the two groups of fixing sleeves, at which time the perforated geotextile is in an unfolded state, and when the perforated geotextile descends to the bottom of the foundation pile, it can be unfolded in a circular shape to ensure the laying effect of the perforated geotextile, and after the crane is separated from the suspension mechanism, the pulling spring can automatically retract the sliding rod into the inside of the fixing sleeve, and the perforated geotextile returns to a soft state and can fit tightly to the bottom of the sea, and the installation of the device does not require manual diving operations, thereby improving the installation speed and being more practical;

[0021] By arranging annular reinforcement ribs on the top of the perforated geotextile and evenly arranging double-strand nylon ropes between the annular reinforcement ribs, seaweed, corals and other marine organisms can be clamped and fixed by the double-strand nylon ropes during use, and the growth of marine organisms can be used to increase the connection stability between the perforated geotextile and the seabed, and the regional environment can be improved and the seawater flow rate in the sea area can be reduced, which is more practical.

[0022] By arranging a plug-in positioning mechanism consisting of a chassis, racks, gears, screws, polygonal slides, and rectangular inner screw tubes at the bottom of the fixing ring, the gravity when the fixing ring is pressed down can be used to automatically control the linear sliding of the rectangular inner screw tube and fit it onto the surface of the foundation pile during the installation of the device, thereby improving the stability of the device in the initial installation stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a diagram of the hoisting state of a preferred embodiment of an offshore single pile anti-scour coupling device of the present invention;

[0024] Figure 2 This is a laying state diagram of a preferred embodiment of an offshore single pile anti-scour coupling device of the present invention;

[0025] Figure 3 It is a partial cross-sectional view of a preferred embodiment of an offshore single pile anti-scour coupling device of the present invention in a laying state;

[0026] Figure 4 It is a cross-sectional structural diagram of a fixing ring of a preferred embodiment of an offshore single pile anti-scour coupling device of the present invention;

[0027] Figure 5 This is a preferred embodiment of an offshore single pile anti-scour joint device of the present invention. Figure 4 Enlarged view of point A in the middle;

[0028] Figure 6 This is a diagram showing the hoisting state of a support member in a preferred embodiment of an offshore single pile anti-scour coupling device of the present invention;

[0029] Figure 7 This is a diagram showing the initial state of a support member in a preferred embodiment of an offshore single pile anti-scour coupling device of the present invention;

[0030] Figure 8 The present invention is a diagram of a suspension mechanism of a preferred embodiment of an offshore single pile anti-scour coupling device.

[0031] In the figure: 1. fixing ring; 2. geotextile with holes; 3. support member; 4. suspension mechanism; 5. sealing shield; 6. annular reinforcement rib; 7. double-strand nylon rope; 8. marine life; 9. cloth cover; 10. fixing sleeve; 11. sliding rod; 12. connecting wire; 13. contraction groove; 14. pulling spring; 15. rubber shield; 16. traction wire; 17. counterweight; 18. plug-in positioning mechanism; 19. installation groove; 20. extrusion spring; 21. ball; 22. sleeve; 23. hanging ring; 24. fixing block; 25. vertical rod; 26. first conical block; 27. limit groove; 28. trapezoidal plug block; 29. ​​reset spring; 30. second conical block; 31. chassis; 32. rack; 33. gear; 34. screw; 35. polygonal slide; 36. rectangular inner screw tube. DETAILED DESCRIPTION

[0032] In order to make the technical solution of the present invention more clear and specific to those skilled in the art, the present invention is further described in detail below in conjunction with embodiments and drawings, but the implementation manner of the present invention is not limited thereto.

[0033] like Figure 1-Figure 8 As shown, this embodiment provides an offshore single pile anti-scour coupling device, including a fixing ring 1, which is sleeved on the outside of the foundation pile, and the inner diameter of the fixing ring 1 is larger than the outer diameter of the foundation pile, a geotextile with holes 2 is fixed to the outer edge of the fixing ring 1, and the shape of the geotextile with holes 2 is annular, and the bottom of the geotextile with holes 2 is evenly provided with support members 3 in an annular array for unfolding the geotextile with holes 2, and the spokes of the support members 3 are gathered to the fixing ring 1, and the outer edge of the geotextile with holes 2 is evenly provided with a suspension mechanism 4, and the top of the inner side of the fixing ring 1 is provided with a sealing shielding member 5 that fits with the side of the foundation pile, and the bottom of the fixing ring 1 is provided with a plug-in positioning mechanism 18 connected to the seabed, and the top of the geotextile with holes 2 is provided with a slow-flow fixing component.

[0034] General working principle: When in use, first place the fixing ring 1 horizontally, and unfold the perforated geotextile 2 outward into a circle, then connect the hook on the crane to the suspension mechanism 4, and use the support 3 to position the shape of the perforated geotextile 2. When the perforated geotextile 2 is lifted, it is like an umbrella that shrinks. Then, the device is hoisted to the top of the foundation pile, the fixing ring 1 is set on the foundation pile, and the device is slowly released. In the process of releasing the perforated geotextile 2, its shape is fixed and will not change. When the fixing ring 1 contacts the seabed, the plug-in positioning mechanism 18 first fixes the fixing ring 1, and then the fixing ring 1 is fixed to the bottom of the seabed. The position of the fixed ring 1 is fixed, and then with the release of the crane cable, the perforated geotextile 2 unfolds in an umbrella shape, and after the perforated geotextile 2 fits with the seabed, the hook is separated from the suspension mechanism 4, and the support member 3 releases the support state of the perforated geotextile 2, and the perforated geotextile 2 returns to a soft state, which can better fit with the seabed, and the sealing shielding member 5 seals between the fixed ring 1 and the pile, shields the water flow, and prevents the water flow from impacting and contacting the silt at the bottom of the pile. In addition, during use, the slow-flow fixing component is used to reduce the rate of water flow around the pile.

[0035] In this embodiment, the support member 3 includes a cloth cover 9, a fixed sleeve 10, a slide rod 11, a connecting steel wire 12, a contraction groove 13 and a pulling spring 14. The cloth cover 9 is fixed on the perforated geotextile 2, and the interior of the cloth cover 9 is hollow. The interior of the cloth cover 9 is evenly fixed with fixed sleeves 10 along the length direction. The interior of the fixed sleeve 10 is slidably installed with slide rods 11. Connecting steel wires 12 are provided between the ends of the slide rods 11. Adjacent slide rods 11 are fixedly connected by connecting steel wires 12. Contraction grooves 13 are evenly provided on the outside of the fixing ring 1. The inner ends of the contraction grooves 13 are fixed with pulling springs 14. The ends of the pulling springs 14 are connected to the ends of the connecting steel wires 12. The connecting steel wires 12 at one end of the cloth cover 9 away from the fixing ring 1 extend to the outside of the cloth cover 9 and are connected to the suspension mechanism 4.

[0036] Local working principle: After the perforated geotextile 2 is unfolded into a circle, when the hook is connected to the suspension mechanism 4, the pulling spring 14 will be pulled. At this time, the pulling spring 14 is stretched, and the sliding rod 11 that only exists inside a set of fixed sleeves 10 in the initial state is pulled. The two ends of the sliding rod 11 are respectively inserted into the interior of the two sets of fixed sleeves 10. The interior of the cloth cover 9 is a supportable straight rod. Therefore, after the device contacts the ground, the perforated geotextile 2 is in a supported state and lowered and laid on the seabed. Then the hook is separated from the suspension mechanism 4, the pulling spring 14 is reset, and the sliding rod 11 is reset. At this time, the interior of the cloth cover 9 returns to a soft state, and the perforated geotextile 2 can be deformed and fitted according to the shape of the seabed.

[0037] In this embodiment, the suspension mechanism 4 includes a sleeve 22, a hanging ring 23, a fixed block 24, a vertical rod 25, a first conical block 26, a limiting groove 27, a trapezoidal plug block 28, a return spring 29 and a second conical block 30. The fixed block 24 is fixed to the end of the connecting wire 12. The top of the fixed block 24 is vertically fixed with the vertical rod 25, the top of the vertical rod 25 is fixed with the first conical block 26, and the second conical block 30 is slidably arranged on the vertical rod 25. The first conical block 26 and the second conical block 30 are symmetrically arranged. The outer side of the first conical block 26 is sleeved with a sleeve 22, the top of the sleeve 22 is fixed with a hanging ring 23, and the bottom of the inner side of the sleeve 22 is evenly provided with limiting grooves 27. The inside of the limiting grooves 27 are all slidably installed with trapezoidal plug blocks 28 that fit with the bottom of the first conical block 26, and a return spring 29 is provided between the trapezoidal plug block 28 and the end of the limiting groove 27.

[0038] Partial working principle: When the device is hoisted, the hook is connected to the hanging ring 23. At this time, the trapezoidal plug 28 is located at the bottom of the first conical block 26. When hanging, the first conical block 26 is prevented from coming out from the inside of the sleeve 22. After the perforated geotextile 2 is installed, the sleeve 22 is controlled to move downward, and the bottom inclined surface of the trapezoidal plug 28 contacts the top of the second conical block 30. By using the weight of the sleeve 22, the trapezoidal plug 28 is squeezed into the inside of the limit groove 27. When the trapezoidal plug 28 drops to the second conical block 30, the second conical block 30 is pressed into the limit groove 27. After reaching the bottom, the trapezoidal plug 28 extends out again and fits with the surface of the second conical block 30, and then controls the rise of the sleeve 22. At this time, the first conical block 26 fits with the second conical block 30, and the trapezoidal plug 28 slides along the inclined surface of the second conical block 30, and after moving to the top of the second conical block 30, it is separated from the second conical block 30 and fits on the inclined surface of the first conical block 26. Then the trapezoidal plug 28 is separated from the first conical block 26, and the hoisting state is released. There is no need for manual unhooking, which is more practical and safer.

[0039] In this embodiment, the diameter of the top end of the second conical block 30 is greater than the diameter of the bottom end of the first conical block 26 , and a groove having the same diameter as that of the bottom end of the first conical block 26 is formed on the top of the second conical block 30 .

[0040] Local working principle: After the first conical block 26 and the second conical block 30 are fitted together, the first conical block 26 will enter the interior of the second conical block 30, ensuring that the trapezoidal plug block 28 can directly enter the surface of the first conical block 26 after sliding out of the second conical block 30.

[0041] In this embodiment, the sealing baffle 5 includes a rubber baffle 15 and a traction wire 16. The rubber baffle 15 is evenly fixed on the top of the fixing ring 1 in a circular array, and the sides of adjacent rubber baffles 15 are fitted together. The outer side of the rubber baffle 15 is installed with a traction wire 16, and the end of the traction wire 16 away from the rubber baffle 15 is connected to the connecting steel wire 12 inside the shrinkage groove 13.

[0042] Partial working principle: When the connecting wire 12 is pulled, the top of the rubber shield 15 will be unfolded outward by the traction wire 16, so the end of the rubber shield 15 will not contact the surface of the pile body when the device moves downward, reducing friction resistance.

[0043] In this embodiment, mounting grooves 19 are evenly opened on the inner side of the fixing ring 1, and extrusion springs 20 are installed at the inner ends of the mounting grooves 19. Balls 21 are provided at the open ends of the mounting grooves 19, and the balls 21 are rotatably installed inside the mounting grooves 19, and the ends of the extrusion springs 20 are in contact with the sides of the balls 21.

[0044] Partial working principle: During the downward movement of the device, the ball 21 contacts the surface of the pile, reducing the friction between the fixing ring 1 and the pile.

[0045] In this embodiment, the slow-flow fixing component includes annular reinforcement ribs 6, double-strand nylon ropes 7 and marine organisms 8. There are two groups of annular reinforcement ribs 6, and the inner diameters of the two groups of annular reinforcement ribs 6 are different. The two groups of annular reinforcement ribs 6 are fixed on the top of the perforated geotextile 2. Double-strand nylon ropes 7 are evenly fixed between the two groups of annular reinforcement ribs 6, and marine organisms 8 are clamped and installed inside the double-strand nylon ropes 7.

[0046] Partial working principle: Before the installation of the device, the roots of marine organisms 8 such as seaweed or coral are inserted into the inside of the double-strand nylon rope 7, and the double-strand nylon rope 7 squeezes and fixes the marine organisms 8. After the installation of the device, the roots of the marine organisms 8 can grow downward and be buried in the seabed, which not only improves the environment, but also reduces the impact of water flow on the foundation piles, and also strengthens the installation stability of the device.

[0047] In this embodiment, the plug-in positioning mechanism 18 includes a chassis 31, a rack 32, a gear 33, a screw 34, a polygonal slide 35 and a rectangular inner screw 36. The chassis 31 is arranged in parallel below the fixed ring 1. The bottom of the fixed ring 1 is evenly and vertically installed with a rack 32, and the rack 32 penetrates the chassis 31 and is slidably connected to the chassis 31. The inside of the chassis 31 is rotatably installed with a gear 33 meshing with the rack 32. The teeth on the side of the rack 32 do not extend to the bottom end of the rack 32. The inner side of the chassis 31 is evenly opened with polygonal slides 35, and the inside of the polygonal slides 35 is slidably installed with a rectangular inner screw 36. The side of the gear 33 is fixed with a screw 34 threadedly connected to the rectangular inner screw 36.

[0048] Local working principle: During the descent of the control device, the rack 32 will first contact the seabed and be inserted into the seabed, then the chassis 31 will fit on the seabed, and as the device continues to move downward, the chassis 31 will contact the fixing ring 1, and the rack 32 will control the rotation of the gear 33, thereby driving the screw 34 to rotate. The rotation of the screw 34 can push the rectangular inner screw tube 36 horizontally and fit it on the surface of the foundation pile, thereby correcting and aligning the position of the device and ensuring the stability of the installation.

[0049] In this embodiment, the bottom end of the rack 32 is tapered, and one end of the rectangular inner spiral tube 36 away from the rack 32 is provided with anti-slip grooves.

[0050] Partial working principle: The tapered design at the bottom of the rack 32 enables it to be inserted into the seabed more conveniently, while the anti-slip groove at the end of the rectangular inner spiral tube 36 increases the connection stability with the foundation pile.

[0051] In this embodiment, counterweights 17 are evenly fixed in a circular array on the outer side of the bottom of the perforated geotextile 2 .

[0052] Partial working principle: The use of the counterweight block 17 can accelerate the falling of the device and increase the gravity of the outer end when the perforated geotextile 2 is unfolded and released, thereby ensuring the pulling effect on the connecting steel wire 12.

[0053] The above description is only a further embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and concepts of the present invention within the scope disclosed by the present invention, which belong to the protection scope of the present invention.

Claims

1. An offshore single pile anti-scour joint device, comprising a fixing ring (1), characterized in that: A fixing ring (1) is sleeved on the outside of a foundation pile, and the inner diameter of the fixing ring (1) is larger than the outer diameter of the foundation pile. A geotextile with holes (2) is fixed on the outer side of the fixing ring (1), and the geotextile with holes (2) is in a ring shape. Support members (3) are evenly arranged in a ring array at the bottom of the geotextile with holes (2), and the spokes of the support members (3) converge to the fixing ring (1). Suspension mechanisms (4) are evenly arranged on the outer side of the geotextile with holes (2). A sealing shielding member (5) that fits the side of the foundation pile is arranged on the top of the inner side of the fixing ring (1). A plug-in positioning mechanism (18) connected to the seabed is arranged at the bottom of the fixing ring (1). A slow-flow fixing component is arranged on the top of the geotextile with holes (2).

2. The offshore single pile anti-scour joint device according to claim 1, characterized in that: The support member (3) comprises a cloth sleeve (9), a fixed sleeve (10), a slide rod (11), a connecting wire (12), a contraction groove (13) and a tension spring (14). The cloth sleeve (9) is fixed on the perforated geotextile (2), and the interior of the cloth sleeve (9) is hollow. The interior of the cloth sleeve (9) is evenly fixed with the fixed sleeve (10) along the length direction. The interior of the fixed sleeve (10) is slidably installed with the slide rod (11), and the ends of the slide rod (11) are connected. The adjacent sliding rods (11) are fixedly connected by connecting the steel wires (12), the outer side of the fixing ring (1) is evenly provided with contraction grooves (13), the inner ends of the contraction grooves (13) are all fixed with pulling springs (14), the ends of the pulling springs (14) are connected to the ends of the connecting steel wires (12), and the connecting steel wires (12) at one end away from the fixing ring (1) inside the cloth sleeve (9) extend to the outer side of the cloth sleeve (9) and are connected to the suspension mechanism (4).

3. The offshore single pile anti-scour joint device according to claim 2, characterized in that: The suspension mechanism (4) comprises a sleeve (22), a hanging ring (23), a fixed block (24), a vertical rod (25), a first conical block (26), a limiting groove (27), a trapezoidal plug block (28), a return spring (29) and a second conical block (30). The fixed block (24) is fixed to the end of the connecting steel wire (12). The top of the fixed block (24) is vertically fixed with the vertical rod (25). The top of the vertical rod (25) is fixed with the first conical block (26). The vertical rod (25) is slidably provided with a second conical block (29). The first conical block (26) and the second conical block (30) are symmetrically arranged, the outer side of the first conical block (26) is sleeved with a sleeve (22), the top of the sleeve (22) is fixed with a hanging ring (23), the bottom of the inner side of the sleeve (22) is evenly provided with a limiting groove (27), the inside of the limiting groove (27) is slidably installed with a trapezoidal plug-in block (28) that fits the bottom of the first conical block (26), and a return spring (29) is arranged between the trapezoidal plug-in block (28) and the end of the limiting groove (27).

4. The offshore single pile anti-scour joint device according to claim 3, characterized in that: The diameter of the top end of the second conical block (30) is greater than the diameter of the bottom end of the first conical block (26), and the top of the second conical block (30) is provided with a groove having the same diameter as the bottom end of the first conical block (26).

5. The offshore single pile anti-scour joint device according to claim 4, characterized in that: The sealing shield (5) comprises a rubber shield (15) and a traction wire (16); the rubber shields (15) are evenly fixed on the top of the fixing ring (1) in an annular array, and the sides of adjacent rubber shields (15) are fitted together; the outer sides of the rubber shields (15) are all installed with traction wires (16), and the ends of the traction wires (16) away from the rubber shields (15) are all connected to the connecting wires (12) inside the contraction groove (13).

6. The offshore single pile anti-scour joint device according to claim 1, characterized in that: The inner side of the fixing ring (1) is evenly provided with mounting grooves (19), the inner ends of the mounting grooves (19) are all provided with extrusion springs (20), the open ends of the mounting grooves (19) are all provided with balls (21), and the balls (21) are rotatably mounted inside the mounting grooves (19), and the ends of the extrusion springs (20) are in contact with the sides of the balls (21).

7. An offshore monopile anti-scour connection device according to any one of claims 1 to 6, characterized in that: The slow-flow fixing component comprises annular reinforcement ribs (6), double-strand nylon ropes (7) and marine organisms (8). The annular reinforcement ribs (6) are provided with two groups, and the inner diameters of the two groups of annular reinforcement ribs (6) are different. The two groups of annular reinforcement ribs (6) are both fixed on the top of the perforated geotextile (2). The double-strand nylon ropes (7) are evenly fixed between the two groups of annular reinforcement ribs (6), and the marine organisms (8) are clamped and installed inside the double-strand nylon ropes (7).

8. The offshore single pile anti-scour joint device according to claim 7, characterized in that: The plug-in positioning mechanism (18) comprises a chassis (31), a rack (32), a gear (33), a screw (34), a polygonal slide (35) and a rectangular inner screw tube (36). The chassis (31) is arranged parallel to the bottom of the fixing ring (1). The bottom of the fixing ring (1) is evenly and vertically installed with a rack (32), and the rack (32) penetrates the chassis (31) and is slidably connected with the chassis (31). The chassis (31) is internally rotatably installed with a gear (33) meshing with the rack (32). The teeth on the side of the rack (32) do not extend to the bottom end of the rack (32). The inner side of the chassis (31) is evenly provided with polygonal slides (35). The inside of the polygonal slides (35) is slidably installed with a rectangular inner screw tube (36). The side of the gear (33) is fixed with a screw (34) threadedly connected with the rectangular inner screw tube (36).

9. The offshore single pile anti-scour joint device according to claim 8, characterized in that: The bottom end of the rack (32) is conical, and one end of the rectangular inner spiral tube (36) away from the rack (32) is provided with anti-slip grooves.

10. The offshore single pile anti-scour joint device according to claim 1, characterized in that: Counterweight blocks (17) are evenly fixed in a circular array on the outer side of the bottom of the perforated geotextile (2).

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