A self-maintaining anti-scour device for offshore wind power pile foundation and its use method

Abstract

The present invention relates to the technical field of pile foundation anti-scouring, and discloses a self-maintaining anti-scouring device for offshore wind power pile foundation, comprising a main body, a connecting platform fixedly connected to the top of the main body, four limit blocks fixedly connected to the outer surface of the connecting platform, four connecting plates arranged in a circular array with the connecting platform as the center, and a hollow block fixedly connected to the side of the connecting plate away from the main body. When the water flow on the seabed is relatively large, the present invention will first impact the square plate inside the connecting frame, and when the square plate encounters an impact, the wave water collides and contacts with the square plate, and part of the wave water passes through the holes on the square plate. After the water flow passes through the holes, the impact force of part of the water flow can be reduced, and the square plate squeezes the spring on the rear side after swinging, so that the spring is squeezed and contracted, and the springs and spring rods behind the multiple square plates can also play a buffering role when reciprocating, so that the scouring force of the water flow is reduced, thereby preventing the wave water from scouring and damaging the pile foundation.

Description

Technical Field

[0001] The invention relates to the technical field of pile foundation anti-scouring, and in particular to a self-maintaining anti-scouring device for an offshore wind power pile foundation. Background Art

[0002] Wind power generation is the fastest growing green energy technology in the world. While the construction of onshore wind farms is developing rapidly, people have noticed some limitations on the use of onshore wind energy, such as large land area and noise pollution. Due to the abundant offshore wind energy resources and the feasibility of offshore wind power technology, the ocean will become a rapidly developing wind power market. Offshore wind farms in Europe and the United States are on the eve of large-scale development. The sea area within a water depth of less than 50m along the eastern coast of my country is vast and very close to the power load center. With the development and maturity of offshore wind farm technology, wind power will surely become an important energy source for sustainable development in the eastern coastal areas of my country.

[0003] Since the pile foundation of wind power generation is on the seabed, it is inevitable to be impacted by seawater. When the seawater impacts, the seawater will generate eddies around the pile foundation and sweep away the surrounding sand and soil. Over time, it will have a great impact on the stability of the foundation. The general existing solution is to use large external equipment to fill the area around the pile foundation by grabbing sand and stones. However, this method not only takes a long time, but also has poor integrity of this stone throwing method, and consumes a lot of maintenance costs and workload. Summary of the invention

[0004] The object of the present invention is to provide a self-maintaining anti-scour device for offshore wind power pile foundations to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is a self-maintaining and anti-scouring device for offshore wind power pile foundation, comprising a main body, a connecting platform fixedly connected to the top of the main body, four limit blocks fixedly connected to the outer surface of the connecting platform, four connecting plates arranged in a circular array with the connecting platform as the center, a hollow block fixedly connected to the side of the connecting plate away from the main body, a connecting ring 1 fixedly connected to the side of the four connecting plates away from the hollow blocks, four supporting plates fixedly connected to the side of the connecting ring 1 away from the connecting plate, a connecting ring 2 fixedly connected to the bottom of the four supporting plates, four empty grooves opened on the outer surface of the connecting ring 2, the four empty grooves arranged in a circular array with the main body as the center, and further comprising;

[0007] A flushing mechanism, the flushing mechanism includes a connecting rod rotatably connected to the inside of the hollow block, a connecting frame is fixedly connected to the side of the connecting rod away from the hollow block, three reinforcing plates are fixedly connected to the inside of the connecting frame, and the three reinforcing plates are distributed at equal distances, three square plates are rotatably connected to the inside of the connecting frame, and the three square plates are distributed at equal distances, a spring is fixedly connected to the side of the square plate close to the reinforcing plate, and one end of the spring away from the square plate is fixedly connected to the reinforcing plate, the bottom of the second reinforcing plate is fixedly connected to a limit strip, the bottom of the limit strip is rotatably connected to a rotating plate, a spring rod is fixedly connected to the right side of the rotating plate, the spring rod penetrates and slides on the left side of the connecting plate, and a plurality of holes are opened on the outer surface of the square plate;

[0008] The auxiliary mechanism includes a square block fixedly connected to one end of a spring rod away from a rotating plate; the top of the square block is rotatably connected to a mosaic plate, the bottom of the mosaic plate is rotatably connected to a spring column, the spring column penetrates to the bottom of the square block, a fixed frame is provided on the side of the square block close to the main body, two limit plates 1 are fixedly connected to the side of the fixed frame close to the mosaic plate, and two limit plates 2 are fixedly connected to the side of the fixed frame close to the main body.

[0009] Furthermore, the two limit plates 1 are internally rotatably connected with a rotating shaft, and the outer surfaces of the rotating shafts are respectively fixedly connected with a driving wheel and a driven wheel, the outer surface of the driving wheel is in contact with the engaging plate, and the interior of the fixed frame is slidably connected with a rack plate, and the side of the rack plate close to the driven wheel is meshed with the outer surface of the driven wheel, and the top of the limit plate 2 is fixedly connected with a C-shaped plate.

[0010] Furthermore, a moving mechanism is provided on the outer surface of the main body, and the moving mechanism includes an inner cylinder slidably connected to the inside of the connecting ring 2, four limit blocks are fixedly connected to the outer surface of the inner cylinder, the limit blocks are slidably connected to the inside of the empty groove, a plurality of connecting ears 1 are fixedly connected to the outer surface of the inner cylinder, and the plurality of connecting ears 1 are arrayed in a central circumference of the movable rod 1, a plurality of connecting ears 2 are fixedly connected to the outer surface of the inner cylinder, and the plurality of connecting ears 2 are arrayed in a central circumference of the movable rod 1, a plurality of rectangular grooves are opened at the bottom of the inner cylinder, and a spring plate is rotatably connected to the inside of the connecting ear 2, and the middle part of the spring plate is rotatably connected to the limit plate 2, and the end of the spring plate away from the connecting ear 2 is rotatably connected to the rack plate.

[0011] Furthermore, an eddy current mechanism is provided on the outer surface of the main body, which includes a rotating rod rotatably connected inside two C-shaped plates, two connecting plates fixedly connected to the outer surface of the rotating rod, and the two connecting plates are symmetrically distributed about the central axis of the rotating rod. A through groove is provided on the side of the connecting plate away from the central axis of the rotating rod, and a plug rod is rotatably connected inside the through groove, and a grille is fixedly connected to the side wall of the connecting plate, a side of the connecting plate close to the grille close to the C-shaped plate is fixedly connected to a limiting ring, and the limiting ring is fixedly connected to the side wall of the C-shaped plate, a side of the rotating rod away from the connecting plate is fixedly connected to the rotating plate, and a side of the rotating plate away from the connecting plate is rotatably connected to a top rod.

[0012] Furthermore, a guide mechanism is provided on the outer surface of the main body, and the guide mechanism includes a movable rod 1 rotatably connected inside the connecting ear 1, a movable frame is inserted on the outer surface of the movable rod 1, a fixed slide plate is sleeved on the outer surface of the movable frame, the bottom of the fixed slide plate is fixedly connected to the top of the connecting ring 2, a sliding rod 2 is rotatably connected inside the movable frame, and a tooth 1 is fixedly connected to the end of the movable frame away from the connecting ear 1

[0013] Furthermore, one end of the sliding rod 2 close to the moving frame is fixedly connected with a tooth 2, and one end of the sliding rod 2 away from the movable rod 1 is rotatably connected with a guide plate, and the bottom of the guide plate is fixedly connected with two connecting ears 3, and the two connecting ears 3 are symmetrically distributed in the middle of the guide plate, and the inner part of the connecting ear 3 is rotatably connected to the outer surface of the top rod.

[0014] Furthermore, a stabilizing mechanism is provided on the outer surface of the main body, and the stabilizing mechanism includes an insertion rod fixedly connected to the inside of the rectangular groove, a swing rod is sleeved on the outer surface of the insertion rod, an end of the swing rod away from the insertion rod is rotatably connected to a stabilizing block, a sand storage cavity is provided inside the stabilizing block, a side of the stabilizing block away from the swing rod is fixedly connected to a plurality of filters, an elastic plate is rotatably connected to the top inner wall of the sand storage cavity, and a sand inlet trough is provided on the top of the stabilizing block.

[0015] Furthermore, a self-maintenance and anti-scouring device for offshore wind power pile foundation and a self-maintenance and anti-scouring method for offshore wind power pile foundation include the following steps:

[0016] S1; first, connect all the devices together and install them on the outer surface of the pile foundation. When the water flow continuously flushes the square plate and drives the spring rod to move back and forth, the reciprocating movement of the spring rod will pull the square block to move synchronously. When the square block moves forward, the interlocking plate on the square block will push against the driving wheel, so that the driving wheel drives the driven wheel to rotate;

[0017] S2; The rotation of the driven wheel will cause the rack plate to move upward. When multiple rack plates move upward at the same time, the connecting ear and the inner tube will be pulled downward by the spring plate. When the inner tube moves downward, the bottom stabilizing block will first contact the seabed and move upward through the swing rod. When the inner tube moves down to the bottom limit, it will also contact the seabed and press the stabilizing block into the seabed.

[0018] S3; Since a filter plate is provided on the outer surface of the stabilizing block, the filter plate can only be passed by water, and the sand entering includes the sand around the outside of the stabilizing block, which cannot enter and exit from the filter plate, and when the square block moves backward, it will push against the spring column through the engaging plate, and the driving wheel will not rotate at this time.

[0019] The present invention has the following beneficial effects:

[0020] (1) In the present invention, when water flows rapidly over the outer surface of the stabilizing block, the water flow will also impact the vortex mechanism. When the water flow impacts the grille, the rotating rod rotates using the impact force of the water flow as a power source, and the grille will also rotate with the rotating plate and the top rod through the rotating rod. When the grille is impacted by seawater and rotates, the vortex mechanism is rotated by the impact of seawater, which can reduce the occurrence of vortices around the stabilizing block. The generation of vortices can sweep away the sand around the device. The rotation of the vortex mechanism can reduce the generation of vortices, further reducing the occurrence of sand on the seabed behind the pile foundation being swept away.

[0021] (2) In the present invention, when the water flow continuously flushes the square plate and drives the spring rod to move back and forth, the reciprocating movement of the spring rod will pull the square block to move synchronously. When the square block is moved forward, the interlocking plate on the square block will press against the driving wheel, so that the driving wheel drives the driven wheel to rotate. The rotation of the driven wheel will cause the rack plate to move upward. When multiple rack plates move upward at the same time, the spring plate will pull the connecting ear and the inner tube downward. When the inner tube moves downward, the stabilizing block at the bottom will swing when it first contacts the seabed. The rod moves upward, and when the inner tube moves down to the bottom limit, it will also contact the seabed and press the stabilizing block into the seabed. At this time, when the water flows quickly over the outside of the stabilizing block, the water inside the stabilizing block will be driven by the rapid flow of the external water flow to flow outward. At this time, when the sucked out water flows outward, the elastic sheet of the sand storage chamber opens downward, and the water body containing sand and soil outside the stabilizing block enters the sand storage chamber through the opening of the stabilizing block. The sand and soil contained in the water body are finally retained in the sand storage chamber to improve the stability of the entire outer tube.

[0022] (3) In the present invention, when the water flow on the seabed is relatively strong, it will first impact the square plate inside the connecting frame. When the square plate encounters the impact, the wave water collides with the square plate, and part of the wave water passes through the holes on the square plate. After the water flow passes through the holes, it can reduce the impact force of part of the water flow. After the square plate swings, it squeezes the spring on the rear side, causing the spring to be squeezed and contracted. The springs and spring rods behind the multiple square plates can also play a buffering role when moving back and forth, so that the scouring force of the water flow is reduced, thereby preventing the wave water from scouring and damaging the pile foundation.

[0023] (4) In the present invention, when the inner cylinder moves downward, it will push the movable rod one to move forward, and when the movable rod one descends, it will also cause the sliding rod two to rotate in the moving frame, and when it moves the guide plate forward, it will also move downward a little distance, and when the rotating disk rotates, it will cause the top rod to rotate eccentrically. The combination of the moving frame and the sliding rod two allows the top rod to rotate eccentrically when the guide plate moves downward, causing the top rod to swing continuously with the connecting ear three at the bottom of the guide plate and the top of the sliding rod two as the center. When the top rod pushes forward, the guide plate will tilt, causing the tilted guide plate to guide the impacting water flow, changing the direction of the water flow impact, which can enhance the device's control over the direction of the water flow, help reduce the scouring of the wind turbine pile foundation by the water flow, and better adapt to changes in the water flow, further protecting the wind turbine pile foundation.

[0024] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0028] Figure 3 It is a schematic diagram of the main structure of the present invention;

[0029] Figure 4 It is a schematic diagram of the structure of the flushing mechanism of the present invention;

[0030] Figure 5 It is a schematic diagram of the auxiliary mechanism structure of the present invention;

[0031] Figure 6It is a schematic diagram of the structure of the mobile mechanism of the present invention;

[0032] Figure 7 It is a schematic diagram of the structure of the eddy current mechanism of the present invention;

[0033] Figure 8 It is a schematic diagram of the structure of the guide mechanism of the present invention;

[0034] Fig. 9 for Figure 6 Enlarged view of point B in the middle;

[0035] Fig.10 for Figure 8 Enlarged view of point A

[0036] Fig.11 This is a flow chart of the anti-scour method of the present invention;

[0037] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0038] In the figure: 1. Main body; 101. Connecting platform; 102. Connecting plate; 103. Hollow block; 104. Connecting ring 1; 105. Support plate; 106. Connecting ring 2; 2. Flushing mechanism; 201. Connecting rod; 202. Connecting frame; 203. Reinforcement plate; 204. Square plate; 205. Limiting strip; 206. Rotating plate; 207. Spring rod; 3. Auxiliary mechanism; 301. Square block; 302. Engaging plate; 303. Fixed frame; 304. Limiting plate 1; 305. Limiting plate 2; 306. Rotating shaft; 307. Driving wheel; 308. Driven wheel; 309. Rack plate; 4. Moving mechanism ; 401, inner tube; 402, limit block; 403, connecting ear one; 404, connecting ear two; 405, rectangular groove; 406, spring plate; 5, eddy current mechanism; 501, rotating rod; 502, connecting plate; 503, grille; 504, limit ring; 505, rotating plate; 506, top rod; 6, guide mechanism; 601, movable rod one; 602, moving frame; 603, fixed slide plate; 604, sliding rod two; 605, guide plate; 606, connecting ear three; 7, stabilizing mechanism; 701, plug rod; 702, swing rod; 703, stabilizing block; 704, elastic plate; 705, sand storage chamber. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Example 1, please refer to Figure 1-Figure 8As shown, the present invention is a self-maintaining anti-scour device for offshore wind power pile foundation, comprising a main body 1, a connecting platform 101 is fixedly connected to the top of the main body 1, four connecting plates 102 are fixedly connected to the outer surface of the connecting platform 101, the four connecting plates 102 are arranged in a circular array with the connecting platform 101 as the center, a hollow block 103 is fixedly connected to the side of the connecting plate 102 away from the main body 1, a connecting ring 104 is fixedly connected to the side of the four connecting plates 102 away from the hollow block 103, four supporting plates 105 are fixedly connected to the side of the connecting ring 104 away from the connecting plate 102, a connecting ring 2 106 is fixedly connected to the bottom of the four supporting plates 105, four empty grooves are opened on the outer surface of the connecting ring 2 106, and the four empty grooves are arranged in a circular array with the main body 1 as the center, and also includes;

[0041] The flushing mechanism 2 includes a connecting rod 201 rotatably connected to the inside of the hollow block 103, a connecting frame 202 is fixedly connected to the side of the connecting rod 201 away from the hollow block 103, three reinforcing plates 203 are fixedly connected to the inside of the connecting frame 202, and the three reinforcing plates 203 are equidistantly distributed, three square plates 204 are rotatably connected to the inside of the connecting frame 202, and the three square plates 204 are equidistantly distributed, a spring is fixedly connected to the side of the square plate 204 close to the reinforcing plate 203, and one end of the spring away from the square plate 204 is fixedly connected to the reinforcing plate 203, a limiting strip 205 is fixedly connected to the bottom of the second reinforcing plate 203, a rotating plate 206 is rotatably connected to the bottom of the limiting strip 205, a spring rod 207 is fixedly connected to the right side of the rotating plate 206, the spring rod 207 penetrates and slides on the left side of the connecting plate 102, and a plurality of holes are provided on the outer surface of the square plate 204;

[0042] The auxiliary mechanism 3 includes a spring rod 207, one end of which is fixedly connected to a square block 301 away from the rotating plate 206, the top of the square block 301 is rotatably connected to a mosaic plate 302, the bottom of the mosaic plate 302 is rotatably connected to a spring column, the spring column penetrates to the bottom of the square block 301, a fixed frame 303 is provided on the side of the square block 301 close to the main body 1, the fixed frame 303 is fixedly connected to two limit plates 1 304 on the side close to the mosaic plate 302, and the fixed frame 303 is fixedly connected to two limit plates 2 305 on the side close to the main body 1.

[0043] The two limit plates 304 are internally rotatably connected with a rotating shaft 306, and the outer surfaces of the rotating shaft 306 are respectively fixedly connected with a driving wheel 307 and a driven wheel 308, the outer surface of the driving wheel 307 is in contact with the engaging plate 302, and the interior of the fixed frame 303 is slidably connected with a rack plate 309, and the side of the rack plate 309 close to the driven wheel 308 is meshed with the outer surface of the driven wheel 308, and the top of the limit plate 2 305 is fixedly connected with a C-shaped plate.

[0044] A moving mechanism 4 is provided on the outer surface of the main body 1, and the moving mechanism 4 includes an inner cylinder 401 slidably connected to the inside of the connecting ring 2 106, four limit blocks 402 are fixedly connected to the outer surface of the inner cylinder 401, and the limit blocks 402 are slidably connected to the inside of the empty groove, and a plurality of connecting ears 1 403 are fixedly connected to the outer surface of the inner cylinder 401, and the plurality of connecting ears 1 403 are arrayed around the central circumference of the inner cylinder 401, and a plurality of connecting ears 2 404 are fixedly connected to the outer surface of the inner cylinder 401, and the plurality of connecting ears 2 404 are arrayed around the central circumference of the inner cylinder 401, and a plurality of rectangular grooves 405 are provided at the bottom of the inner cylinder 401, and a spring plate 406 is rotatably connected to the inside of the connecting ear 2 404, and the middle part of the spring plate 406 is rotatably connected to the limit plate 2, and the end of the spring plate 406 away from the connecting ear 2 404 is rotatably connected to the rack plate 309.

[0045] The outer surface of the main body 10 is provided with an eddy current mechanism 5, which includes a rotating rod 501 rotatably connected inside two C-shaped plates, and two connecting disks 502 are fixedly connected to the outer surface of the rotating rod 501, and the two connecting disks 502 are symmetrically distributed about the central axis of the rotating rod 501, and a through groove is opened on the side of the connecting disk 502 away from the central axis of the rotating rod 501, and an insertion rod is rotatably connected inside the through groove, and a grille is fixedly connected to the side wall of the connecting disk, and a limit ring 504 is fixedly connected to the side of the connecting disk 502 close to the grille 503 close to the C-shaped plate, and the limit ring 504 is fixedly connected to the side wall of the C-shaped plate, and a rotating disk 505 is fixedly connected to the side of the rotating rod 501 away from the connecting disk 502, and a top rod 506 is rotatably connected to the side of the rotating disk 505 away from the connecting disk 502.

[0046] When in use, first connect all the devices together and install them on the outer surface of the pile foundation. When the water flow on the seabed is relatively strong, it will first impact the square plate 204 inside the connection frame 202. When the square plate 204 encounters the impact, the wave water collides with the square plate 204, and part of the wave water passes through the holes on the square plate 204. After the water flow passes through the holes, it can reduce the impact force of part of the water flow. After the square plate 204 swings, it squeezes the spring on the rear side, causing the spring to squeeze and contract. Through the springs and spring rods 207 at the rear of the multiple square plates 204, it can also play a role in absorbing energy when moving back and forth, so that The scouring force of the water flow is reduced, thereby preventing the pile foundation from being damaged by the scouring of the waves. When the water flow continuously scours the square plate 204 and drives the spring rod 207 to move back and forth, the reciprocating movement of the spring rod 207 will pull the square block 301 to move synchronously. When the square block 301 moves forward, the interlocking plate 302 on the square block 301 will push against the driving wheel 307, so that the driving wheel 307 rotates with the driven wheel 308. The rotation of the driven wheel 308 will cause the rack plate 309 to move upward. When multiple rack plates 309 move upward at the same time, the spring plate 406 will be moved in the middle of the limit plate 305. The spring plate 406 rotates in the second limit plate 305 at this time, so that one end of the spring plate 406 pulls the connecting ear 404 with the inner cylinder 401 to move downward. When the inner cylinder 401 moves downward, the bottom stabilizing block 703 first contacts the seabed and moves upward through the swing rod 702. When the inner cylinder 401 moves down to the bottom limit, it will also contact the seabed and press the stabilizing block 703 into the seabed. At this time, when the water flows quickly through the outside of the stabilizing block 703, the water inside the stabilizing block 703 will be driven by the rapid flow of the external water flow to flow outward together. At this time, when the sucked water flows outward, the elastic sheet of the sand storage chamber opens downward, and the water containing sand outside the stabilizing block 703 enters the sand storage chamber 705 through the opening of the stabilizing block 703. The sand contained in the water is finally retained in the sand storage chamber 705 to improve the stability of the entire outer cylinder. Since a filter plate is provided on the outer surface of the stabilizing block 703, the filter plate can only be passed by water flow, and the incoming sand and other external impurities cannot enter or exit from the filter plate. Moreover, when the square block 301 moves backward, it will push against the spring rod 207 through the interlocking plate 302, and the driving wheel 307 will not rotate at this time.

[0047] Example 2, please refer to Figure 1-Figure 10As shown, the outer surface of the main body 1 is provided with a guide mechanism 6, which includes a movable rod 601 rotatably connected to the inner side of the connecting ear 403, a movable frame 602 is inserted into the outer surface of the movable rod 601, a fixed slide plate 603 is sleeved on the outer surface of the movable frame 602, the bottom of the fixed slide plate 603 is fixedly connected to the top of the connecting ring 106, the inner side of the movable frame 602 is rotatably connected to the sliding rod 604, and the end of the movable frame 602 away from the connecting ear 403 is fixedly connected to the tooth 1

[0048] The end of the sliding rod 2 604 close to the moving frame 602 is fixedly connected with the tooth 2, and the end of the sliding rod 2 604 away from the movable rod 1 601 is rotatably connected with the guide plate 605. The bottom of the guide plate 605 is fixedly connected with two connecting ears 3 606. The two connecting ears 3 606 are symmetrically distributed in the middle of the guide plate 605. The inside of the connecting ear 3 606 is rotatably connected to the outer surface of the top rod 506.

[0049] A stabilizing mechanism 7 is provided on the outer surface of the main body 1, and the stabilizing mechanism 7 includes an insertion rod 701 fixedly connected to the inside of the rectangular groove 405, a swing rod 702 is sleeved on the outer surface of the insertion rod 701, and the end of the swing rod 702 away from the insertion rod 701 is rotatably connected to a stabilizing block 703, a sand storage cavity 705 is provided inside the stabilizing block 703, a side of the stabilizing block 703 away from the swing rod 702 is fixedly connected to a plurality of filters, the top inner wall of the sand storage cavity 705 is rotatably connected to an elastic plate 704, and a sand inlet trough is provided on the top of the stabilizing block 703.

[0050] According to any one of the claims, a self-maintenance and anti-scouring device for offshore wind power pile foundations, and a self-maintenance and anti-scouring method for offshore wind power pile foundations, comprising the following steps:

[0051] S1; First, connect all the devices together and install them on the outer surface of the pile foundation. When the water flow continuously flushes the square plate 204 and drives the spring rod 207 to move back and forth, the reciprocating movement of the spring rod 207 will pull the square block 301 to move synchronously. When the square block 301 moves forward, the interlocking plate 302 on the square block 301 will push against the driving wheel 307, so that the driving wheel 307 rotates with the driven wheel 308;

[0052] S2; The rotation of the driven wheel 308 causes the rack plate 309 to move upward. When the multiple rack plates 309 move upward at the same time, the connecting ear 404 and the inner cylinder 401 will be pulled downward by the spring plate 406. When the inner cylinder 401 moves downward, the bottom stabilizing block 703 will first contact the seabed and move upward through the swing rod 702. When the inner cylinder 401 moves down to the bottom limit, it will also contact the seabed and press the stabilizing block 703 into the seabed.

[0053] S3; Since the outer surface of the stable block 703 is provided with a filter plate, the filter plate can only be passed by water, and the sand entering includes the sand around the outside of the stable fast, which can not enter and exit from the filter plate, and when the square block 301 moves backward, it will pass through the interlocking plate 302 against the spring column, and the driving wheel 307 will not rotate at this time

[0054] When in use, when water flows rapidly over the outer surface of the stabilizing block 703, the water will also impact the vortex mechanism 5. When the water impacts the grille 503, the rotating rod 501 is rotated using the impact force of the water as a power source, and the grille 503 will also rotate with the rotating disk 505 and the top rod 506 through the rotating rod 501 when rotating. When the grille 503 is impacted by seawater and rotates, the vortex mechanism 5 is rotated by the impact of seawater, which can reduce the vortex that is easily generated around the stabilizing block 703. The generation of vortex can sweep away the sand around the device, and the rotation of the vortex mechanism 5 can reduce the generation of vortex. It should be noted that when 5 is rotated as a whole and with 503, 503 is During rotation, the plug rods at both ends are squeezed by 504, because 504 is fixedly connected to the side wall of the C-shaped plate, so when 5 as a whole rotates with 503, the plug rod will move downward inside the through groove along the arc of 504, and an open state will be formed between 503. When the plug rod takes off the arc of 503 and 504, the bottom 503 will be closed at the bottom of the through groove due to its own gravity. After being unaffected by 504, the multiple 503 at the bottom will be closed, and the bottom will form a semicircular shape. When impacted by the water flow, the bottom 503 is closed, so the occurrence of eddy currents can be reduced, and the occurrence of sand and soil on the seabed in the rear area of ​​the pile foundation being rolled up and taken away can be further reduced. When the inner tube 401 moves downward It will push the movable rod 1 601 and move 602 forward, and when the movable rod 1 601 descends, it will also make the sliding rod 2 604 rotate in the movable frame 602, and when it moves forward with the guide plate 605, it will move down a little distance. It should be noted that because the ends of the movable rod 1 601 and the sliding rod 2 604 that are close to each other are rotated inside the movable frame 602, and the ends of the movable rod 1 601 and the sliding rod 2 604 that are close to each other are provided with teeth and are meshed and connected, so when the movable rod 1 601 moves forward, it is affected by the downward movement of 401 and the movable rod 1 601 will rotate counterclockwise, and because one end of the sliding rod 2 604 is meshed with the movable rod 1 601, the movable rod 1 601 rotates counterclockwise. When rotating, the sliding rod 2 604 will rotate clockwise, and when the sliding rod 2 604 rotates clockwise, the guide plate 605 will deviate downward, and when the rotating disk 505 rotates, it will lead the top rod 506 to rotate eccentrically. Combining the moving frame 602 and the sliding rod 2 604, when the guide plate 605 moves downward, the eccentric rotation of the top rod 506 will cause the top rod 506 to swing continuously with the connecting ear 3 606 at the bottom of the guide plate 605 with the top of the sliding rod 2 604 as the center. When the top rod 506 pushes forward, the guide plate 605 will tilt, so that the tilted guide plate 605 guides the impacting water flow, changes the direction of the water flow impact, and can enhance the device's regulation of the water flow direction.It helps to reduce the scouring of wind turbine pile foundation by water flow, and can better adapt to the changes of water flow and further protect the wind turbine pile foundation.

[0055] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A self-maintaining anti-scour device for an offshore wind power pile foundation, comprising a main body (1), a connecting platform (101) being fixedly connected to the top of the main body (1), four connecting plates (102) being fixedly connected to the outer surface of the connecting platform (101), the four connecting plates (102) and the connecting platform (101) forming a central circumferential array, a hollow block (103) being fixedly connected to the side of the connecting plate (102) away from the main body (1), a connecting ring 1 (104) being fixedly connected to the side of the four connecting plates (102) away from the hollow block (103), four supporting plates (105) being fixedly connected to the side of the connecting ring 1 (104) away from the connecting plate (102), a connecting ring 2 (106) being fixedly connected to the bottom of the four supporting plates (105), four empty grooves being provided on the outer surface of the connecting ring 2 (106), the four empty grooves being arranged in a circular array with the main body (1) as the central circumference, characterized in that: Also includes; A flushing mechanism (2), the flushing mechanism (2) comprising a connecting rod (201) rotatably connected to the inside of a hollow block (103), a connecting frame (202) fixedly connected to the side of the connecting rod (201) away from the hollow block (103), three reinforcing plates (203) fixedly connected to the inside of the connecting frame (202), the three reinforcing plates (203) being distributed at equal distances, and three square plates (204) rotatably connected to the inside of the connecting frame (202), the three square plates (204) being distributed at equal distances, the square plates (204) A spring is fixedly connected to one side close to the reinforcing plate (203); one end of the spring away from the square plate (204) is fixedly connected to the reinforcing plate (203); a limiting strip (205) is fixedly connected to the bottom of the second reinforcing plate (203); a rotating plate (206) is rotatably connected to the bottom of the limiting strip (205); a spring rod (207) is fixedly connected to the right side of the rotating plate (206); the spring rod (207) penetrates and slides on the left side of the connecting plate (102); and a plurality of holes are provided on the outer surface of the square plate (204); An auxiliary mechanism (3), the auxiliary mechanism (3) comprising a square block (301) fixedly connected to one end of a spring rod (207) away from the rotating plate (206); the top of the square block (301) is rotatably connected to a fitting plate (302), the bottom of the fitting plate (302) is rotatably connected to a spring column, the spring column penetrates the bottom of the square block (301), a fixing frame (303) is provided on a side of the square block (301) close to the main body (1), the fixing frame (303) is fixedly connected to two first limiting plates (304) on a side close to the fitting plate (302), and the fixing frame (303) is fixedly connected to two second limiting plates (305) on a side close to the main body (1); The outer surface of the main body (1) is provided with a moving mechanism (4), the moving mechanism (4) comprising an inner cylinder (401) slidably connected to the inside of the second connecting ring (106), the outer surface of the inner cylinder (401) is fixedly connected to four limit blocks (402), the limit blocks (402) are slidably connected to the inside of the empty groove, the outer surface of the inner cylinder (401) is fixedly connected to a plurality of first connecting ears (403), the plurality of first connecting ears (403) are arranged in an array around the central circumference of the inner cylinder (401), the outer surface of the inner cylinder (401) is fixedly connected to a plurality of second connecting ears (404), the plurality of second connecting ears (404) are arranged in an array around the central circumference of the inner cylinder (401), the bottom of the inner cylinder (401) is provided with a plurality of rectangular grooves (405), the inside of the second connecting ear (404) is rotatably connected to a spring plate (406), the end of the spring plate (406) away from the second connecting ear (404) is rotatably connected to a rack plate (309); The outer surface of the main body (1) is provided with an eddy current mechanism (5), the eddy current mechanism (5) comprising a rotating rod (501) rotatably connected inside two C-shaped plates, the outer surface of the rotating rod (501) is fixedly connected to two connecting plates (502), the two connecting plates (502) are symmetrically distributed about the central axis of the rotating rod (501), a through groove is formed on one side of the connecting plate (502) away from the central axis of the rotating rod (501), an insert rod is rotatably connected inside the through groove, and the insert rod is away from the through groove. One side is fixedly connected to a grille (503), the grille (503) is rotatably connected to the side wall of the connection plate, a side of the connection plate (502) close to the grille (503) and close to the C-shaped plate is fixedly connected to a limit ring (504), the limit ring (504) is fixedly connected to the side wall of the C-shaped plate, a side of the rotating rod (501) away from the connection plate (502) is fixedly connected to a rotating plate (505), and a side of the rotating plate (505) away from the connection plate (502) is rotatably connected to a top rod (506).

2. The self-maintaining anti-scouring device for offshore wind power pile foundation according to claim 1 is characterized in that: The two limit plates (304) are internally rotatably connected to a rotating shaft (306), and the outer surfaces of the rotating shafts (306) are respectively fixedly connected to a driving wheel (307) and a driven wheel (308), and the outer surface of the driving wheel (307) is in contact with the interlocking plate (302). The fixed frame (303) is internally slidably connected to a rack plate (309), and the side of the rack plate (309) close to the driven wheel (308) is meshedly connected to the outer surface of the driven wheel (308), and the top of the limit plate (305) is fixedly connected to a C-shaped plate.

3. The self-maintaining anti-scouring device for offshore wind power pile foundation according to claim 2 is characterized in that: The outer surface of the main body (1) is provided with a guide mechanism (6), and the guide mechanism (6) comprises a movable rod (601) rotatably connected inside the connecting ear (403), a movable frame (602) is inserted into the outer surface of the movable rod (601), a fixed slide plate (603) is sleeved on the outer surface of the movable frame (602), the bottom of the fixed slide plate (603) is fixedly connected to the top of the connecting ring (106), the interior of the movable frame (602) is rotatably connected to the sliding rod (604), and the end of the movable frame (602) away from the connecting ear (403) is fixedly connected to the tooth (1).

4. The self-maintaining anti-scouring device for offshore wind power pile foundation according to claim 3 is characterized in that: One end of the sliding rod 2 (604) close to the movable frame (602) is fixedly connected with tooth 2, and one end of the sliding rod 2 (604) away from the movable rod 1 (601) is rotatably connected with a guide plate (605), and the bottom of the guide plate (605) is fixedly connected with two connecting ears 3 (606), and the two connecting ears 3 (606) are symmetrically distributed in the middle of the guide plate (605), and the interior of the connecting ear 3 (606) is rotatably connected to the outer surface of the top rod (506).

5. The self-maintaining anti-scouring device for offshore wind power pile foundation according to claim 4 is characterized in that: The outer surface of the main body (1) is provided with a stabilizing mechanism (7), the stabilizing mechanism (7) comprising an insertion rod (701) fixedly connected to the inside of the rectangular groove (405), the outer surface of the insertion rod (701) is sleeved with a swing rod (702), one end of the swing rod (702) away from the insertion rod (701) is rotatably connected to a stabilizing block (703), a sand storage cavity (705) is provided inside the stabilizing block (703), a side of the stabilizing block (703) away from the swing rod (702) is fixedly connected to a plurality of filter screens, the top inner wall of the sand storage cavity (705) is rotatably connected to an elastic plate (704), and a sand inlet groove is provided on the top of the stabilizing block (703).

Images