Anti-collision and scouring cleaning integrated device for offshore wind power pile foundation

Abstract

The invention discloses an anti-collision and scouring cleaning integrated device for an offshore wind power pile foundation. The anti-collision and scouring cleaning integrated device comprises a lifting guide mechanism, an annular anti-collision buffering mechanism, a scouring repairing mechanism and a pile body surface cleaning mechanism. The lifting guide mechanism comprises a lifting driving assembly and a mounting support arranged on the outer ring of the single pile foundation in a sleeving mode. The annular anti-collision buffering mechanism, the scouring repairing mechanism and the pile body surface cleaning mechanism are all arranged on the mounting support and can be driven by the lifting driving assembly to ascend or descend along the outer surface of the single-pile foundation. By arranging the annular anti-collision buffering mechanism, the scouring repairing mechanism and the pile body surface cleaning mechanism, an integrated structure is achieved, the anti-collision function, the anti-scouring function and the cleaning function of the offshore wind power single pile foundation can be achieved at the same time, the layout process of an existing system is effectively simplified, and the efficiency and safety of offshore operation are remarkably improved.

Description

Technical Field

[0001] This invention belongs to the field of offshore wind power engineering technology, specifically relating to an integrated device for anti-collision and scour cleaning of offshore wind turbine pile foundations. Background Technology

[0002] In existing technologies, offshore wind turbine foundations are a key supporting component of offshore wind turbines, and their stability and safety are crucial to the overall operation of wind farms. However, with the continuous development of offshore wind power projects, foundations face a series of problems when exposed to the harsh marine environment for extended periods, the most prominent of which are collision damage, current erosion, and seawater corrosion.

[0003] Offshore wind turbine foundations are frequently subjected to impacts from floating objects and other external forces, especially during the construction and operation of wind farms, where collisions are common. Existing anti-collision devices typically employ physical barriers or crash barriers, but these methods have limitations in applicability and maintenance, and cannot effectively absorb the impact of large-scale collisions, leading to long-term damage to the foundations and affecting their stability and lifespan.

[0004] Furthermore, the seabed surrounding the pile foundation is prone to erosion due to ocean currents and tides, forming phenomena such as "horseshoe eddies." This erosion gradually carries away the sand and soil around the pile foundation, forming erosion pits, which in turn reduces the bearing capacity of the foundation and may even cause the foundation to tilt or settle, affecting the safe operation of the wind turbine.

[0005] Corrosion and biofouling in marine environments also pose a threat to pile foundations. Corrosion in seawater damages the foundation surface materials, while the attachment of marine organisms accelerates this process. Existing cleaning methods mostly rely on manual operation, which is not only inefficient but also difficult to automate, making the maintenance and repair of monopile foundations complex and costly.

[0006] Therefore, existing technologies have failed to effectively address the multiple challenges of offshore wind turbine foundations in terms of protection, scour repair, and cleaning. To address these challenges, a new type of device is urgently needed that integrates functions such as collision prevention, scour repair, and cleaning to comprehensively improve the stability of the foundations, extend their service life, and reduce long-term maintenance costs. Summary of the Invention

[0007] To overcome the shortcomings of existing technologies, this invention provides an integrated device for anti-collision and scour cleaning of offshore wind turbine pile foundations, which solves the technical problems of complex and costly maintenance and repair processes for existing monopile foundations.

[0008] To achieve the above objectives, the specific technical solution of the present invention is as follows: An integrated device for anti-collision and scour cleaning of offshore wind turbine pile foundations includes a lifting and guiding mechanism, a circumferential anti-collision buffer mechanism, a scour repair mechanism, and a pile surface cleaning mechanism.

[0009] The lifting and guiding mechanism includes a lifting drive assembly and a mounting bracket that is fitted around the outer ring of the monopile foundation. A circumferential anti-collision buffer mechanism, a scouring and repair mechanism, and a pile surface cleaning mechanism are all mounted on the mounting bracket and can rise or fall along the outer surface of the monopile foundation under the drive of the lifting drive assembly.

[0010] The circumferential anti-collision buffer mechanism includes multiple anti-collision baffles, each of which is set on the periphery of the monopile foundation and has a buffer component on its inner side.

[0011] The scouring and repair mechanism includes a frame assembly, and a sand conveying pipe assembly, a sand conveying pump, a telescopic drive assembly, and a circumferential drive assembly mounted on the frame assembly. The outer end of the sand conveying pipe assembly is connected to the telescopic end of the telescopic drive assembly, and the inner end faces the bottom perimeter of the monopile foundation, enabling the sand conveying pump to transport sand from the perimeter to the perimeter of the monopile foundation. The circumferential drive assembly is used to drive the frame assembly to move circumferentially along the outer surface of the monopile foundation.

[0012] The pile surface cleaning mechanism is used to spray water onto the surface of a single pile foundation.

[0013] Furthermore, the lifting drive assembly includes a winch and a lifting cable. The winch is fixed to the top of the monopile foundation and is used to drive the winding or releasing of the lifting cable. The bottom end of the lifting cable is fixed to a mounting bracket.

[0014] Furthermore, multiple connecting brackets evenly distributed circumferentially along the axis of the monopile foundation are fixed to the top and bottom of the mounting bracket. The interval between two adjacent connecting brackets forms a mounting groove, and each mounting groove is equipped with a flexible clamping mechanism to limit the relative position between each support frame and the monopile foundation.

[0015] Furthermore, the flexible clamping mechanism includes a torque spring, a flexible roller, and a clamping frame. The bottom of the clamping frame is rotatably connected to a corresponding mounting groove. The torque spring is sleeved on the rotating shaft of the clamping frame, and its two ends are respectively connected to the groove wall of the mounting groove and the clamping frame; the flexible roller is rotatably connected to the clamping frame.

[0016] Furthermore, the buffer assembly includes multiple elastic buffer units arranged in an array on each of the anti-collision partitions. Each elastic buffer unit includes a guide post, a guide sleeve, a buffer spring, and a buffer pad. The guide post is fixed to the corresponding anti-collision partition. The guide sleeve is fitted around the outer ring of the guide post and can move inward and outward along the axial direction of the guide post. The buffer pad is installed at the outer end of the guide sleeve. The buffer spring is installed in the inner cavity of the guide sleeve.

[0017] Furthermore, the frame assembly includes a sleeve bracket and a fixed bracket mounted on the sleeve bracket. The sleeve bracket is fixed to the mounting bracket. The top and bottom edges of the sleeve bracket are each provided with a movable edge. The movable edge is provided with a track that mates with the fixed bracket. Both ends of the fixed bracket are connected to the corresponding tracks and can move circumferentially along the movable edge under the drive of the circumferential drive assembly.

[0018] Furthermore, the circumferential drive assembly includes a circumferential drive motor and two drive gears. The two drive gears are rotatably connected to two connecting parts and are transmitted through a transmission shaft. The circumferential drive motor is fixed to a fixed bracket, and its output shaft is connected to the corresponding drive gear, enabling it to drive the drive gear to rotate. The outer rings of the two moving edges are provided with tooth grooves that mesh with the drive gears.

[0019] Furthermore, the telescopic drive assembly includes a tilting bracket, a telescopic bracket, and a telescopic hydraulic cylinder. The tail end of the tilting bracket is rotatably connected to the fixed bracket and can tilt inward or outward under the control of the telescopic hydraulic cylinder. The telescopic bracket is slidably connected to the tilting bracket. The tail end of the telescopic hydraulic cylinder is rotatably connected to the top of the fixed bracket, and the telescopic end is rotatably connected to the inner end of the telescopic bracket.

[0020] Furthermore, the sand conveying pipe assembly includes two corrugated pipes mounted on a tilting support. The two corrugated pipes are sequentially divided into a sand input pipe and a sand output pipe. The input end of the sand input pipe is connected to a telescopic support, allowing it to extend outwards under the influence of the telescopic support. The output end of the sand input pipe is connected to the inlet of the sand conveying pump. The sand output pipe is connected to the outlet of the sand conveying pump. A displacement drive unit is located at the bottom of the tilting support. The output end of the sand output pipe is connected to the moving end of the displacement drive unit, allowing the displacement drive unit to control the position of the sand output pipe as it falls.

[0021] Furthermore, the pile surface cleaning mechanism includes a crank-connecting rod type piston booster pump and multiple high-pressure fan-shaped cleaning nozzles. Both the crank-connecting rod type piston booster pump and each high-pressure fan-shaped cleaning nozzle are fixed on a fixed bracket. The output end of the crank-connecting rod type piston booster pump is connected to each high-pressure fan-shaped cleaning nozzle via a water pipe. The spraying end of each high-pressure fan-shaped cleaning nozzle faces the monopile foundation.

[0022] Compared with the prior art, the present invention has the following advantages: 1. This invention achieves an integrated structure by setting up a circumferential anti-collision buffer mechanism, a scour repair mechanism, and a pile surface cleaning mechanism. This structure can simultaneously provide anti-collision, anti-scour, and cleaning functions for offshore wind power monopile foundations, effectively simplifying the deployment process of existing systems and significantly improving the efficiency and safety of offshore operations.

[0023] 2. The circumferential anti-collision buffer mechanism in this invention sets up multiple anti-collision baffles around the perimeter of the monopile foundation, and sets buffer units on the inner side of each anti-collision baffle, so that the monopile foundation has the ability to buffer and absorb energy. It can absorb the impact force when subjected to the impact of floating objects, significantly reduce the direct damage of external forces to the pile foundation, and improve the safety performance of the structure.

[0024] 3. The scour repair mechanism in this invention, by setting up a circumferential drive component combined with a telescopic drive component, a sand conveying pump, and a sand conveying pipe assembly, can realize long-distance sand backfilling and local scour pit repair. It can cope with complex terrain and asymmetric scour problems and has good adaptability and construction flexibility.

[0025] 4. The pile surface cleaning mechanism in this invention, by setting a high-pressure fan-shaped cleaning nozzle in conjunction with a crank-connecting rod piston booster pump, can achieve high-pressure stripping of the deposits on the pile surface without the need for an external water source or energy storage equipment, and has good continuous operation capability and energy-saving effect.

[0026] 5. The present invention adopts a modular design and has multiple degrees of freedom of motion such as circumferential rotation, radial expansion, and lifting guidance. It supports flexible positioning and adaptive fitting of pile foundations and is suitable for various types of wind power foundation structures and variable sea conditions. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the lifting guide mechanism in this invention. Figure 1 (Enlarged view of part A in the middle) Figure 3 This is a schematic diagram of the flexible clamping mechanism in this invention; Figure 4 This is a schematic diagram of the circumferential anti-collision buffer mechanism in this invention; Figure 5 This is a schematic diagram of the structure of the buffer unit in this invention. Figure 4 (Enlarged view of part B in the middle section) Figure 6 This is a schematic diagram showing the relative positions of the circumferential anti-collision buffer mechanism and the scour repair mechanism in this invention; Figure 7 This is a schematic diagram of the flushing and repair mechanism in this invention. Figure 6 (Enlarged view of part C in the middle) Figure 8 This is a schematic diagram of the scouring and repair mechanism in the retracted state in this invention; Figure 9 This is a schematic diagram of the pile surface cleaning mechanism in this invention.

[0028] Reference numerals: 1. Monopile foundation; 2. Lifting guide mechanism; 2-1. Lifting drive assembly; 2-1-1. Winch; 2-1-2. Lifting sling; 2-2. Mounting bracket; 2-3. Flexible clamping mechanism; 2-3-1. Torque spring; 2-3-2. Flexible roller; 2-3-3. Clamping frame; 3. Circumferential anti-collision buffer mechanism; 3-1. Anti-collision partition; 3-2. Buffer assembly; 3-2-1. Guide column; 3-2-2. Guide sleeve; 3-2-3. Buffer compression spring; 3-2-4. Buffer pad; 4. Flushing and Repair Mechanism; 4-1. Frame Assembly; 4-1-1. Sleeve Support; 4-1-2. Fixed Support; 4-2. Sand Conveying Pipe Assembly; 4-2-1. Sand Input Pipe; 4-2-2. Sand Output Pipe; 4-3. Telescopic Drive Assembly; 4-3-1. Tilting Support; 4-3-2. Telescopic Support; 4-3-3. Telescopic Hydraulic Cylinder; 4-4. Circumferential Drive Assembly; 5. Pile Surface Cleaning Mechanism; 5-1. Crank-Connecting Rod Piston Booster Pump; 5-2. High-Pressure Fan-Shaped Cleaning Nozzle; 6. Displacement Drive Unit. Detailed Implementation

[0029] In the description of this invention, it should be understood that the terms "one end", "the other end", "outer side", "upper side", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0030] The invention will now be further described with reference to the accompanying drawings.

[0031] like Figure 1 and 2As shown, an integrated anti-collision and scour cleaning device for offshore wind turbine foundations is installed on the corresponding monopile foundation 1 to achieve functions such as anti-collision, scour pit repair, and surface cleaning of the monopile foundation. The device includes a lifting guide mechanism 2, a circumferential anti-collision buffer mechanism 3, a scour repair mechanism 4, and a pile surface cleaning mechanism 5. The lifting guide mechanism 2 includes a lifting drive assembly 2-1 and a mounting bracket 2-2 that is fitted around the outer ring of the monopile foundation 1. The circumferential anti-collision buffer mechanism 3, the scour repair mechanism 4, and the pile surface cleaning mechanism 5 are all mounted on the mounting bracket 2-2 and can rise or fall along the outer surface of the monopile foundation 1 under the drive of the lifting drive assembly 2-1.

[0032] like Figure 1 and 4 As shown, the circumferential anti-collision buffer mechanism 3 includes multiple anti-collision baffles 3-1 and buffer components 3-2 disposed inside each anti-collision baffle 3-1. Each anti-collision baffle 3-1 is evenly distributed circumferentially along the axis of the monopile foundation 1, and each is provided with a buffer component 3-2 on its inner side, which is used to effectively absorb the impact force when an external impact occurs and protect the monopile foundation 1.

[0033] like Figure 1 and 6 As shown, the scour repair mechanism 4 includes a frame assembly 4-1, and a sand conveying pipe assembly 4-2, a sand conveying pump, a telescopic drive assembly 4-3, and a circumferential drive assembly 4-4 installed on the frame assembly 4-1. The outer end of the sand conveying pipe assembly 4-2 is connected to the telescopic end of the telescopic drive assembly 4-3, and its inner end faces the bottom perimeter of the monopile foundation 1, enabling the sand conveying pump to transport sand from the perimeter to the area around the monopile foundation 1. The circumferential drive assembly 4-4 drives the frame assembly 4-1 to move circumferentially along the outer surface of the monopile foundation 1, thereby driving the sand conveying pipe assembly 4-2 and the telescopic drive assembly 4-3 to move circumferentially, completing the backfilling of sand around the monopile foundation 1 and repairing the sand loss caused by ocean current scour.

[0034] like Figure 2 As shown, the lifting drive assembly 2-1 includes a winch 2-1-1 and a lifting sling 2-1-2. The winch 2-1-1 is fixed to the top of the monopile foundation 1 and is used to drive the winding or releasing of the lifting sling 2-1-2. The bottom end of the lifting sling 2-1-2 is fixed to the mounting bracket 2-2, enabling the mounting bracket 2-2 to rise as a whole during the winding process of the winch 2-1-1, thereby driving the circumferential anti-collision buffer mechanism 3, the scouring and repair mechanism 4, and the pile surface cleaning mechanism 5 to rise.

[0035] In this embodiment, the mounting bracket 2-2 includes three ring-shaped support frames arranged at intervals. Between each pair of adjacent support frames, mounting areas corresponding to the circumferential anti-collision buffer mechanism 3 and the scour repair mechanism 4 are formed. The circumferential anti-collision buffer mechanism 3 and the scour repair mechanism 4 are respectively installed within their respective mounting areas.

[0036] Furthermore, multiple flexible clamping mechanisms 2-3 are provided on the top and bottom support frames to define the relative positions of each support frame and the monopile foundation 1. In this embodiment, multiple connecting brackets evenly distributed circumferentially along the axis of the monopile foundation 1 are fixed on the top and bottom support frames. The interval between two adjacent connecting brackets forms a mounting groove that mates with each flexible clamping mechanism 2-3. The flexible clamping mechanisms 2-3 are disposed within the mounting grooves.

[0037] like Figure 2 and 3 As shown, the flexible clamping mechanism 2-3 includes a torque spring 2-3-1, a flexible roller 2-3-2, and a clamping frame 2-3-3. The bottom of the clamping frame 2-3-3 is rotatably connected to a corresponding mounting groove. The torque spring 2-3-1 is sleeved on the rotating shaft of the clamping frame 2-3-3, and its two ends are connected to the groove wall of the mounting groove and the clamping frame 2-3-3 respectively, providing an inward rotational force to the clamping frame 2-3-3. The flexible roller 2-3-2 is rotatably connected to the top of the clamping frame 2-3-3. During use, the flexible roller 2-3-2 is in contact with the outer wall of the monopile foundation 1 to facilitate the smooth sliding of each support frame on the monopile foundation 1.

[0038] like Figure 4 and 5 As shown, the buffer assembly 3-2 includes multiple elastic buffer units arranged in an array on each of the anti-collision partitions 3-1. Each elastic buffer unit includes a guide post 3-2-1, a guide sleeve 3-2-2, a buffer spring 3-2-3, and a buffer pad 3-2-4. The guide post 3-2-1 is fixed to the corresponding anti-collision partition 3-1. The guide sleeve 3-2-2 is fitted over the outer ring of the guide post 3-2-1 and can move inward and outward along the axial direction of the guide post 3-2-1. The buffer pad 3-2-4 is installed at the outer end of the guide sleeve 3-2-2. The buffer spring 3-2-3 is installed in the inner cavity of the guide sleeve 3-2-2 and can cooperate with the buffer pad 3-2-4 to form a double buffer.

[0039] In this embodiment, the support frames on both the top and bottom sides of each anti-collision partition 3-1 are provided with multiple guide rail units corresponding to each anti-collision partition 3-1. Each guide rail unit includes two movable guide rails spaced apart on the corresponding support frame. The top and bottom of each anti-collision partition 3-1 are slidably engaged with the corresponding movable guide rails.

[0040] like Figure 6 and 7 As shown, the frame assembly 4-1 includes a sleeve bracket 4-1-1 and a fixed bracket 4-1-2 mounted on the sleeve bracket 4-1-1. The sleeve bracket 4-1-1 is fitted over the monopile foundation 1, and its top and bottom are fixed to the corresponding support frame. The top and bottom edges of the sleeve bracket 4-1-1 are each provided with a movable edge. The movable edge has a track that cooperates with the fixed bracket 4-1-2. Both ends of the fixed bracket 4-1-2 are connected to the corresponding track and can move circumferentially along the movable edge under the drive of the circumferential drive assembly 4-4.

[0041] Specifically, the fixed bracket 4-1-2 includes a central mounting portion and connecting portions at both ends. The connecting portions connect to a track on the moving edge. The mounting portion, connecting portions, and the outer wall of the sleeve bracket 4-1-1 form a receiving area that mates with the circumferential drive assembly 4-4. The circumferential drive assembly 4-4 is disposed within this receiving area.

[0042] In this embodiment, the circumferential drive assembly 4-4 includes a circumferential drive motor (not shown in the figure) and two drive gears. The two drive gears are rotatably connected to two connecting parts and are transmitted through a transmission shaft. The circumferential drive motor is fixed to the connecting part located at the top, and its output shaft is connected to the corresponding drive gear, enabling it to drive the drive gear to rotate. The outer rings of the two moving edges are provided with toothed grooves that mesh with the drive gears, so that when the drive gears rotate, they can drive the fixed bracket 4-1-2 to move along the outer rings of the moving edges with the engagement of the toothed grooves.

[0043] like Figure 7 and 8 As shown, the telescopic drive assembly 4-3 includes a tilting bracket 4-3-1, a telescopic bracket 4-3-2, and a telescopic hydraulic cylinder 4-3-3. The tail end of the tilting bracket 4-3-1 is rotatably connected to the fixed bracket 4-1-2, allowing it to tilt inwards or outwards under the control of the telescopic hydraulic cylinder 4-3-3. The telescopic bracket 4-3-2 is slidably connected to the tilting bracket 4-3-1. The tail end of the telescopic hydraulic cylinder 4-3-3 is rotatably connected to the top of the fixed bracket 4-1-2, and its telescopic end is rotatably connected to the inner end of the telescopic bracket 4-3-2.

[0044] During operation, in the initial state, the telescopic end of the telescopic hydraulic cylinder 4-3-3 retracts to its limit position, causing the tilting bracket 4-3-1 to tilt upwards to a vertical position, while the telescopic bracket 4-3-2 slides inwards to its limit position. When it is necessary to repair the scour pit around the monopile foundation 1, the telescopic end of the telescopic hydraulic cylinder 4-3-3 extends outwards, thereby causing the tilting bracket 4-3-1 to tilt horizontally while simultaneously driving the telescopic bracket 4-3-2 to slide outwards, allowing the input end of the sand conveying pipe assembly 4-2 to contact the sand at a distance. The sand is then transported to the area around the monopile foundation 1 by a sand conveying pump, thus completing the repair of the scour pit.

[0045] In this embodiment, the sand conveying pipe assembly 4-2 includes two corrugated pipes mounted side-by-side on the tilting bracket 4-3-1. The two corrugated pipes are sequentially divided into a sand input pipe 4-2-1 and a sand output pipe 4-2-2. The input end of the sand input pipe 4-2-1 is connected to the telescopic bracket 4-3-2 and can extend outwards under the influence of the telescopic bracket 4-3-2. The output end of the sand input pipe 4-2-1 is connected to the inlet of a sand conveying pump (not shown in the figure). A transition pipe is provided between the outlet of the sand conveying pump and the input end of the sand output pipe 4-2-2 to connect the outlet of the sand conveying pump to the input end of the sand output pipe 4-2-2.

[0046] Furthermore, a displacement drive unit 6 is provided at the bottom of the flipping bracket 4-3-1, and an output port is provided on the moving end of the displacement drive unit 6. The output end of the sand output pipe 4-2-2 is connected to the output port, and can control the position of the sand output and falling in the sand output pipe 4-2-2 under the drive of the displacement drive unit 6, thereby realizing the uniform spreading of the sucked outer ring sand in the scour pit around the single pile foundation 1, and realizing the sand backfilling and repair around the single pile foundation 1.

[0047] In this embodiment, the displacement drive unit 6 includes a movable seat, a rack, a displacement gear, and a displacement drive motor. The rack is fixed to the tilting bracket 4-3-1. The movable seat is slidably connected to the tilting bracket 4-3-1 and located on one side of the rack. The displacement gear is rotatably connected to the movable seat and meshes with the rack. Driven by the displacement drive motor, the displacement gear rotates, cooperating with the rack to allow the movable seat to slide freely horizontally on the tilting bracket 4-3-1, thereby controlling the falling position of the sand output from the sand output pipe 4-2-2.

[0048] like Figure 9As shown, the pile surface cleaning mechanism 5 includes a crank-connecting rod type piston booster pump 5-1 and multiple high-pressure fan-shaped cleaning nozzles 5-2. Both the crank-connecting rod type piston booster pump 5-1 and each high-pressure fan-shaped cleaning nozzle 5-2 are fixed on a fixed bracket 4-1-2. The output end of the crank-connecting rod type piston booster pump 5-1 is connected to each high-pressure fan-shaped cleaning nozzle 5-2 via a water pipe. The spray ends of each high-pressure fan-shaped cleaning nozzle 5-2 are all directed towards the monopile foundation 1, so that when the crank-connecting rod type piston booster pump 5-1 is working, each high-pressure fan-shaped cleaning nozzle 5-2 can spray high-pressure water onto the surface of the monopile foundation 1, thereby achieving the rinsing of the monopile foundation 1 surface.

[0049] The working principle of this invention is as follows: Install this device on the corresponding monopile foundation 1, and execute commands for anti-collision, scour pit repair, or surface cleaning as needed.

[0050] When external sensors detect a floating object approaching the monopile foundation 1, the winch 2-1-1 in the lifting guide mechanism 2 winds up or releases the lifting cable 2-1-2, causing the mounting bracket 2-2 to rise or fall as a whole, which in turn moves the circumferential anti-collision buffer mechanism 3 to the height of sea level. When the floating object impacts the anti-collision baffle 3-1, the impact force is absorbed by the various buffer units within the anti-collision baffle 3-1, thereby reducing the direct damage to the monopile foundation 1 from external forces.

[0051] When external sensors detect a large scour pit around the monopile foundation 1, the telescopic end of the telescopic hydraulic cylinder 4-3-3 in the scour repair mechanism 4 extends outward, thereby causing the tilting bracket 4-3-1 to tilt horizontally and simultaneously driving the telescopic bracket 4-3-2 to slide outward, allowing the input end of the sand conveying pipe assembly 4-2 to contact the distant sand. The sand is then transported to the area around the monopile foundation 1 by a sand conveying pump. Simultaneously, the circumferential drive assembly 4-4 drives the frame assembly 4-1 to perform a circular motion around the monopile foundation 1, enabling the sand conveying pipe assembly 4-2 to lay the distant sand around the monopile foundation 1, thus completing the repair of the scour pit.

[0052] When external sensors detect a significant amount of adsorbed material on the surface of the monopile foundation 1, the winch 2-1-1 in the lifting guide mechanism 2 winds up or releases the lifting cable 2-1-2, causing the mounting bracket 2-2 to rise or fall as a whole, which in turn causes the pile surface cleaning mechanism 5 to rise or fall. The crank-connecting rod piston booster pump 5-1 in the pile surface cleaning mechanism 5 compresses and increases the seawater volume, which is then sprayed onto the surface of the monopile foundation 1 through high-pressure fan-shaped cleaning nozzles 5-2 for cleaning. Simultaneously, the circumferential drive assembly 4-4 operates, causing the pile surface cleaning mechanism 5 to move in a circular motion around the periphery of the monopile foundation 1, completing the cleaning of the outer surface of the monopile foundation 1.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An integrated device for anti-collision and scour cleaning of offshore wind turbine foundations, characterized in that: It includes a lifting guide mechanism (2), a circumferential anti-collision buffer mechanism (3), a flushing and repair mechanism (4), and a pile surface cleaning mechanism (5). The lifting guide mechanism (2) includes a lifting drive assembly (2-1) and an installation bracket (2-2) that is fitted around the outer ring of the single pile foundation (1); the circumferential anti-collision buffer mechanism (3), the flushing and repair mechanism (4) and the pile surface cleaning mechanism (5) are all mounted on the installation bracket (2-2) and can rise or fall along the outer surface of the single pile foundation (1) under the drive of the lifting drive assembly (2-1); The circumferential anti-collision buffer mechanism (3) includes multiple anti-collision baffles (3-1), each anti-collision baffle (3-1) is set on the periphery of the single pile foundation (1), and each has a buffer component (3-2) on its inner side. The scouring and repair mechanism (4) includes a frame assembly (4-1), and a sand conveying pipe assembly (4-2), a sand conveying pump, a telescopic drive assembly (4-3), and a circumferential drive assembly (4-4) installed on the frame assembly (4-1). The outer end of the sand conveying pipe assembly (4-2) is connected to the telescopic end of the telescopic drive assembly (4-3), and the inner end faces the bottom of the monopile foundation (1). It can convey the surrounding sand to the monopile foundation (1) through the sand conveying pump. The circumferential drive assembly (4-4) is used to drive the frame assembly (4-1) to make circumferential movements along the outer surface of the monopile foundation (1). The pile surface cleaning mechanism (5) is used to spray water onto the surface of the single pile foundation (1).

2. The integrated anti-collision and scour cleaning device for offshore wind turbine foundations according to claim 1, characterized in that: The lifting drive assembly (2-1) includes a winch (2-1-1) and a lifting cable (2-1-2); the winch (2-1-1) is fixed to the top of the monopile foundation (1) and is used to drive the winding or release of the lifting cable (2-1-2); the bottom end of the lifting cable (2-1-2) is fixed to the mounting bracket (2-2).

3. The integrated anti-collision and scour cleaning device for offshore wind turbine foundations according to claim 1, characterized in that: The mounting bracket (2-2) has multiple connecting brackets evenly distributed circumferentially along the axis of the monopile foundation (1) fixed on its top and bottom; the interval area between two adjacent connecting brackets forms an installation groove, and each installation groove is provided with a flexible clamping mechanism (2-3) to limit the relative position between each support frame and the monopile foundation (1).

4. The integrated anti-collision and scour cleaning device for offshore wind turbine foundations according to claim 3, characterized in that: The flexible clamping mechanism (2-3) includes a torque spring (2-3-1), a flexible roller (2-3-2), and a clamping frame (2-3-3); the bottom of the clamping frame (2-3-3) is rotatably connected to the corresponding mounting groove; the torque spring (2-3-1) is sleeved on the rotating shaft of the clamping frame (2-3-3), and its two ends are respectively connected to the groove wall of the mounting groove and the clamping frame (2-3-3); the flexible roller is rotatably connected to the clamping frame (2-3-3).

5. The integrated anti-collision and scour cleaning device for offshore wind turbine foundations according to claim 1, characterized in that: The buffer assembly (3-2) includes multiple elastic buffer units arranged in an array on each anti-collision partition (3-1); each elastic buffer unit includes a guide post (3-2-1), a guide sleeve (3-2-2), a buffer spring (3-2-3), and a buffer pad (3-2-4); the guide post (3-2-1) is fixed on the corresponding anti-collision partition (3-1); the guide sleeve (3-2-2) is sleeved on the outer ring of the guide post (3-2-1) and can move inward and outward along the axial direction of the guide post (3-2-1); the buffer pad (3-2-4) is installed at the outer end of the guide sleeve (3-2-2); the buffer spring (3-2-3) is installed in the inner cavity of the guide sleeve (3-2-2).

6. The integrated anti-collision and scour cleaning device for offshore wind turbine foundations according to claim 1, characterized in that: The frame assembly (4-1) includes a sleeve bracket (4-1-1) and a fixed bracket (4-1-2) disposed on the sleeve bracket (4-1-1); the sleeve bracket (4-1-1) is fixed on the mounting bracket (2-2); the top and bottom edges of the sleeve bracket (4-1-1) are provided with moving edges; the moving edges are provided with tracks that cooperate with the fixed bracket (4-1-2); the two ends of the fixed bracket (4-1-2) are connected to the corresponding tracks, and can move circumferentially along the moving edges under the drive of the circumferential drive assembly (4-4).

7. The integrated anti-collision and scour cleaning device for offshore wind turbine foundations according to claim 6, characterized in that: The circumferential drive assembly (4-4) includes a circumferential drive motor and two drive gears; both drive gears are rotatably connected to the fixed bracket (4-1-2) and are driven by a transmission shaft; the circumferential drive motor is fixed to the fixed bracket (4-1-2) and its output shaft is connected to the corresponding drive gear, which can drive the drive gear to rotate; the outer rings of the two moving edges are provided with tooth grooves that mesh with the drive gears.

8. The integrated anti-collision and scour cleaning device for offshore wind turbine foundations according to claim 6, characterized in that: The telescopic drive assembly (4-3) includes a flipping bracket (4-3-1), a telescopic bracket (4-3-2), and a telescopic hydraulic cylinder (4-3-3). The tail end of the flipping bracket (4-3-1) is rotatably connected to the fixed bracket (4-1-2) and can flip inward or outward under the control of the telescopic hydraulic cylinder (4-3-3). The telescopic bracket (4-3-2) is slidably connected to the flipping bracket (4-3-1). The tail end of the telescopic hydraulic cylinder (4-3-3) is rotatably connected to the top of the fixed bracket (4-1-2), and the telescopic end is rotatably connected to the inner end of the telescopic bracket (4-3-2).

9. The integrated anti-collision and scour cleaning device for offshore wind turbine foundations according to claim 8, characterized in that: The sand conveying pipe assembly (4-2) includes two corrugated pipes installed on the tilting support (4-3-1); the two corrugated pipes are successively divided into a sand input pipe (4-2-1) and a sand output pipe (4-2-2); the input end of the sand input pipe (4-2-1) is connected to the telescopic support (4-3-2) and can extend outward under the drive of the telescopic support (4-3-2); the output end of the sand input pipe (4-2-1) is connected to the inlet of the sand conveying pump; the sand output pipe (4-2-2) is connected to the outlet of the sand conveying pump; a displacement driving unit (6) is provided at the bottom of the tilting support (4-3-1); the output end of the sand output pipe (4-2-2) is connected to the moving end of the displacement driving unit (6) and can control the position of the sand output in the sand output pipe (4-2-2) under the drive of the displacement driving unit (6).

10. The integrated anti-collision and scour cleaning device for offshore wind turbine foundations according to claim 6, characterized in that: The pile surface cleaning mechanism (5) includes a crank-connecting rod piston booster pump (5-1) and multiple high-pressure fan-shaped cleaning nozzles (5-2); the crank-connecting rod piston booster pump (5-1) and each high-pressure fan-shaped cleaning nozzle (5-2) are fixed on a fixed bracket (4-1-2); the output end of the crank-connecting rod piston booster pump (5-1) is connected to each high-pressure fan-shaped cleaning nozzle (5-2) through a water pipe; the spraying end of each high-pressure fan-shaped cleaning nozzle (5-2) is facing the single pile foundation (1).

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