Offshore wind power anti-scour protection device

Abstract

The invention discloses an offshore wind power anti-scour protection device, and belongs to the technical field of offshore wind power, the offshore wind power anti-scour protection device comprises a foundation pile, a seabed is arranged below the foundation pile, a fixed cylinder is arranged on the outer wall of the foundation pile, a sliding cover is slidably connected to the outer wall of the fixed cylinder in the vertical direction, and the sliding cover comprises an inclined plane part and a straight part; three groups of sliding rods are slidably connected to the outer side of the fixed cylinder in the horizontal direction, an anti-scouring assembly is assembled at the top end of the fixed cylinder, the anti-scouring assembly comprises a three-way hydraulic bin, and the three-way hydraulic bin is fixedly connected to the top end of the fixed cylinder; one end of the interior of the three-way hydraulic bin is slidably connected with a first hydraulic rod through a piston, and the other two ports of the interior of the three-way hydraulic bin are slidably connected with second hydraulic rods through pistons. The problem that a traditional bionic grass laying mode is low in efficiency is solved.

Description

Technical Field

[0001] The present application relates to the field of offshore wind power technology, and in particular to an offshore wind power anti-scour protection device. Background Art

[0002] At present, my country is vigorously promoting the application of offshore wind power. Offshore wind power is a clean and environmentally friendly way of power generation. The stability of the offshore wind turbine foundation is the key to the stable operation of the wind turbine. Most wind turbine foundations are installed in shallow water areas. The mud and sand near the wind turbine foundations in shallow water areas are very easy to loosen, making the foundation structure exposed, and the tidal flow around the wind turbine foundation is relatively strong. The wind turbine foundation is easily affected. Therefore, it is very necessary to take corresponding anti-scouring measures.

[0003] The patent document with announcement number CN118531843B discloses an offshore wind power anti-scour protection device. The invention relates to the field of offshore wind power technology. In the above document, the existing anti-scour protection device uses a riprap protection method, but the protection of the riprap protection method is poor, and the installation project is large, the transportation is difficult and the cost is high. Therefore, a better alternative is to use bionic grass anti-scour protection, that is, it is necessary to manually dive into the seabed to anchor the bionic grass carpet on the base of the seabed. The traditional bionic grass laying method is inefficient, requires manual work underwater for a long time, and is highly dangerous. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an offshore wind power anti-scour protection device, which solves the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present application provides an offshore wind power anti-scour protection device, including a foundation pile, a seabed is arranged below the foundation pile, a fixed cylinder is arranged on the outer wall of the foundation pile, a sliding cover is slidably connected to the outer wall of the fixed cylinder in the vertical direction, the sliding cover includes an inclined portion and a flat portion, a sliding rod is slidably connected to the outer side of the fixed cylinder in the horizontal direction, and three groups of sliding rods are arranged in total, an anti-scour component is equipped at the top of the fixed cylinder, and the anti-scour component includes a three-way hydraulic warehouse, the three-way hydraulic warehouse is fixedly connected to the top of the fixed cylinder, one end of the interior of the three-way hydraulic warehouse is slidably connected to hydraulic rod 1 through a piston, and the other two ports inside the three-way hydraulic warehouse are slidably connected to hydraulic rod 2 through a piston, a pulley is equipped at the port of the hydraulic rod 1, and round blocks are fixedly connected to both sides of the fixed cylinder. The outer side of the fixed cylinder is fixedly connected with a fixed plate 1, and the top of the fixed plate 1 is hinged with an arc plate through a torsion spring rotating shaft, and the outer side of the fixed cylinder is provided with an arc groove, and the arc groove is provided with three groups in total, and the sides of the three groups of arc grooves are provided with sliding grooves connected to the arc grooves, and the sides of the three groups of slide rods are fixedly connected with clamping blocks, and the interiors of the three groups of arc grooves are fixedly connected with U-shaped blocks, and the interiors of the three groups of U-shaped blocks are elastically connected with springs, and the interiors of the three groups of U-shaped blocks are slidably connected with sliding blocks, and the interiors of the three groups of U-shaped blocks are slidably connected with locking rods, and the sides of the three groups of slide rods are equipped with annular blocks, and the interiors of the three groups of annular blocks are fixedly connected with shaft cores, and the side of the fixed cylinder is fixedly connected with a fixed plate 2, and the fixed plate 2 is provided with three groups in total, and the three groups of shaft cores are respectively connected with turfs between the three groups of fixed plate 2.

[0006] Preferably, the hydraulic rod 1 is located on the movement track of the arc plate, and the two groups of round blocks are respectively located on the two groups of hydraulic rod 2.

[0007] Preferably, the three groups of clamping blocks are each provided with a locking groove matched with the three groups of locking rods.

[0008] Preferably, the sides of the three groups of sliding rods are all equipped with sowing assemblies.

[0009] Preferably, the sowing assembly includes an L-shaped support rod, one end of which is fixedly connected to the side of the sliding rod, the other end of which is fixedly connected to a feed barrel, the outer side of the feed barrel is rotatably connected to a sowing column, the outer side of one end of the sowing column is fixedly connected to a worm sleeve, the other end of the sowing column is fixedly connected to a gear, and an arc-shaped rack is fixedly connected to the edge of the seabed, and the gear is meshed with the arc-shaped rack.

[0010] Preferably, the seeding column is a hollow structure with holes formed around it, and the feed barrel is connected to the seeding column.

[0011] Preferably, the sides of the three groups of sliding rods are all equipped with knocking components.

[0012] Preferably, the knocking assembly includes an L-shaped rod 2, wherein the L-shaped rod 2 is fixedly connected to the side of the sliding rod, and a rotating rod is rotatably connected to the L-shaped rod 2, one end of the rotating rod is fixedly connected to a knocking plate, and the other end of the rotating rod is fixedly connected to a turbine, and the turbine is meshed with a worm sleeve.

[0013] Preferably, the knocking plate is close to the side of the fixing tube.

[0014] The benefits of this application are: (1) The present application solves the problem of low efficiency of the traditional bionic grass laying method mentioned in the background technology by setting up a three-way hydraulic warehouse, an arc plate, a fixed plate 1, a hydraulic rod 2, a round block, a hydraulic rod 1, a pulley, an arc groove, a block, a sliding groove, a spring, a U-shaped block, a slider, a locking rod, a shaft core, a fixed plate 2, and a ring block.

[0015] (2) The present application solves the problem of uneven color distribution of seeds on the seabed during sowing proposed in the background art by providing gears, a sowing column, an L-shaped support rod, a feed barrel, and an arc-shaped rack.

[0016] (3) The present application solves the problem of slow sediment outflow speed mentioned in the background technology by providing an L-shaped rod, a knocking plate, a rotating rod, a turbine, and a worm sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The schematic embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application. In the drawings: Figure 1 It is the overall structural diagram of the present invention; Figure 2 It is a partial structural diagram of the anti-scour assembly of the present invention; Figure 3 It is a partial structural diagram of the anti-scour assembly of the present invention; Figure 4 The present invention Figure 3 The structure diagram at A is enlarged; Figure 5 is a structural diagram of the anti-scour assembly of the present invention; Figure 6 It is a structural diagram of the sowing assembly of the present invention; Figure 7 is a structural diagram of the striking assembly of the present invention; Figure 8 It is a partial structural diagram of the striking component of the present invention.

[0018] In the above figure, 1. Foundation pile; 2. Seabed; 3. Fixed cylinder; 4. Sliding cover; 5. Anti-scouring assembly; 6. Seeding assembly; 7. Knocking assembly; 8. Sliding rod; 501. Three-way hydraulic chamber; 502. Arc plate; 503. Fixed plate 1; 504. Hydraulic rod 2; 505. Round block; 506. Hydraulic rod 1; 507. Pulley; 509. Arc groove; 510. Block; 511. Sliding groove; 5 12. Spring; 513. U-shaped block; 514. Sliding block; 515. Locking rod; 516. Shaft core; 517. Fixed plate 2; 518. Ring block; 604. Gear; 605. Seeding column; 606. L-shaped support rod 1; 607. Feed barrel; 608. Arc rack; 701. L-shaped rod 2; 702. Knocking plate; 703. Rotating rod; 704. Turbine; 705. Turbine sleeve. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only embodiments of a part of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.

[0020] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application are described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, the process, method, system, product or equipment comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0021] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0022] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0023] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0024] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. Example

[0025] See also Figure 1-Figure 7The present embodiment provides an offshore wind power anti-scour protection device, including a pile foundation 1, a seabed 2 is arranged below the pile foundation 1, the seabed 2 is used to facilitate the laying of turf and thus improve the anti-scour capability, a fixed cylinder 3 is arranged on the outer wall of the pile foundation 1, a sliding cover 4 is slidably connected to the outer wall of the fixed cylinder 3 in the vertical direction, the movement direction of the sliding cover 4 is vertical sliding movement from top to bottom, the sliding cover 4 includes an inclined portion and a straight portion, the sliding cover 4 includes an inclined portion and a straight portion, the end of the inclined portion of the sliding cover 4 is close to the sliding rod 8, the outer side of the fixed cylinder 3 is slidably connected to the sliding rod 8 in the horizontal direction, the sliding rod 8 is provided with three groups, the top of the fixed cylinder 3 is equipped with an anti-scour component 5, the anti-scour component 5 includes a three-way hydraulic tank 501, the three-way hydraulic tank 501 is fixedly connected to At the top of the fixed cylinder 3, the three-way hydraulic warehouse 501 is fixedly connected to the top of the fixed cylinder 3, so the fixed cylinder 3 supports the three-way hydraulic warehouse 501, thereby facilitating the use of the three-way hydraulic warehouse 501, one end of the interior of the three-way hydraulic warehouse 501 is connected to the hydraulic rod 1 506 through a piston sliding, and the other two ports inside the three-way hydraulic warehouse 501 are connected to the hydraulic rod 2 504 through a piston sliding, and a pulley 507 is installed at the port of the hydraulic rod 1 506. The function of the pulley 507 is that the arc plate 502 can act on the hydraulic rod 1 506 more accurately, and the two sides of the fixed cylinder 3 are fixedly connected with round blocks 505, and the outer side of the fixed cylinder 3 is fixedly connected with a fixed plate 1 503, and the top of the fixed plate 1 503 is hinged with an arc through a torsion spring shaft. Plate 502, the outer side of the fixed cylinder 3 is provided with an arc groove 509, and there are three groups of arc grooves 509. The function of the three groups of arc grooves 509 is to facilitate the movement of the card block 510 and the movement of the card block 510 driven by the slide bar 8. The sides of the three groups of arc grooves 509 are provided with sliding grooves 511 connected to the arc grooves 509. The function of the three groups of sliding grooves 511 is to facilitate the sliding of the card block 510 driven by the slide bar 8. The sides of the three groups of slide bars 8 are fixedly connected with the card block 510. The insides of the three groups of arc grooves 509 are fixedly connected with U-shaped blocks 513. The insides of the three groups of U-shaped blocks 513 are elastically connected with springs 512. The insides of the three groups of U-shaped blocks 513 are slidably connected with sliders 514. The insides of the three groups of U-shaped blocks 513 are slidably connected with sliders 514, so when When the slider 514 is squeezed and slides from left to right, the spring 512 is elastically compressed, and the locking rod 515 is pushed out to move upward. The U-shaped blocks 513 are all slidably connected to the locking rods 515. The sides of the three sliding rods 8 are equipped with annular blocks 518. The insides of the three annular blocks 518 are all fixedly connected to the shaft core 516. The sides of the fixed cylinder 3 are fixedly connected to the fixing plate 2 517. There are three sets of fixing plates 2 517. The function of the three fixing plates 2 517 is to facilitate the stretching and laying of the turf on the surface of the seabed 2. The three shaft cores 516 are respectively connected to the three fixing plates 2 517. The hydraulic rod 1 506 is located on the movement trajectory of the arc plate 502. The two groups of round blocks 505 are respectively located on the two groups of hydraulic rods 2 504.The three groups of blocks 510 are all provided with locking grooves adapted to the three groups of locking rods 515. The sides of the three groups of slide bars 8 are all equipped with sowing components 6. The sowing components 6 include an L-shaped support rod 606. The L-shaped support rod 606 is used to support the use of a feed barrel 607. One end of the L-shaped support rod 606 is fixedly connected to the side of the slide bar 8, and the other end of the L-shaped support rod 606 is fixedly connected to the feed barrel 607. The feed barrel 607 is used to pour the seeds to be planted. The outer side of the feed barrel 607 is rotatably connected to a sowing column 605. One end of the sowing column 605 is fixedly connected to the side of the slide bar 8. The outer side is fixedly connected with a worm sleeve 705, the other end of the seeding column 605 is fixedly connected with a gear 604, the edge of the seabed 2 is fixedly connected with an arc-shaped rack 608, the gear 604 is meshed with the arc-shaped rack 608, the gear 604 is meshed with the arc-shaped rack 608, so the seeding column 605 can rotate when it moves, the seeding column 605 is a hollow structure with holes opened around it, the seeding column 605 is a hollow structure with holes opened around it, so that the seeds can be evenly laid on the seabed 2, and the feed barrel 607 is connected with the seeding column 605.

[0026] When in use, first move the device to a suitable position, and then when encountering a strong sea breeze, the sea breeze can cause the arc plate 502 to move, and the arc plate 502 can squeeze the pulley 507 when it moves. When the pulley 507 is squeezed by the movement of the arc plate 502, the hydraulic rod 1 506 will also be squeezed synchronously. When the hydraulic rod 1 506 is squeezed, the liquid pressure value inside the three-way hydraulic warehouse 501 increases at the same time, so that the two groups of hydraulic rods 2 504 at the two end ports can be pushed out synchronously. When the two groups of hydraulic rods 2 504 are squeezed out synchronously, since the two groups of hydraulic rods 2 504 act on the two groups of round blocks 505 respectively, when the two groups of hydraulic rods 2 504 are pushed out under the action of the three-way hydraulic warehouse 501, The two groups of round blocks 505 can be squeezed from top to bottom, so the sliding cover 4 can be driven to slide from top to bottom under the drive of the two groups of round blocks 505. When the sliding cover 4 slides from top to bottom under the action of the two groups of round blocks 505, the sliding rod 8 can be squeezed. When the sliding rod 8 is squeezed by the inclined end and the straight end of the sliding cover 4, the sliding rod 8 slides in the horizontal direction. When the sliding rod 8 slides in the horizontal direction, the sliding rod 8 can drive the card block 510 to follow the synchronous sliding movement in the sliding groove 511. When the card block 510 slides from right to left under the drive of the sliding rod 8, the card block 510 can squeeze the sliding block 514. When the sliding block 514 is squeezed, the sliding block 514 can The U-shaped block 513 slides inside, so that the spring 512 inside the U-shaped block 513 can be elastically compressed. When the block 510 slides to a certain distance, the block 510 can be connected with the locking rod 515, so that the movement of the slide bar 8 can be limited. At the same time, when the three groups of slide bars 8 slide horizontally from left to right, the three groups of slide bars 8 can drive the three groups of annular blocks 518 to slide synchronously from left to right, and the annular blocks 518 can drive the shaft core 516 to slide synchronously from left to right. Then, through the cooperation with the fixed plate 2 517, the turf can be driven to slide horizontally from left to right. Through the same movement of the three groups of slide bars 8, the turf can be laid, and then the seabed 2 can be filled with turf. , thereby achieving the effect of anti-scouring. At the same time, when the slide bar 8 slides horizontally from left to right, since the slide bar 8 is fixed to the L-shaped support bar 606, the slide bar 8 can also drive the L-shaped support bar 606 to move synchronously when it slides horizontally from left to right. At the same time, the seaweed seeds are poured into the feed barrel 607. At this time, the seaweed seeds can enter the sowing column 605. Therefore, when the L-shaped support bar 606 drives the feed barrel 607, and the feed barrel 607 drives the sowing column 605 to slide horizontally from left to right, the gear 604 on the sowing column 605 can mesh with the arc-shaped rack 608 at the edge of the seabed 2 during movement. When the gear 604 meshes with the arc-shaped rack 608, it can rotate.Therefore, the seeding column 605 can also rotate while sliding horizontally from left to right, so that the seaweed seeds entering the seeding column 605 can be evenly laid on the seabed 2 through the circular holes opened on the seeding column 605 by rotation. Example

[0027] See also Figure 1-Figure 8 On the basis of Example 1, the present application is equipped with a knocking assembly 7 on the side of the three groups of sliding rods 8, and the knocking assembly 7 includes an L-shaped rod 701. The function of the L-shaped rod 701 is to support the movement of the rotating rod 703, so as to facilitate the movement of the rotating rod 703. The L-shaped rod 701 is fixedly connected to the side of the sliding rod 8. The rotating rod 703 is rotatably connected to the L-shaped rod 701. One end of the rotating rod 703 is fixedly connected to a knocking plate 702. The function of the knocking plate 702 is to knock on the fixed cylinder 3 when rotating. The other end of the rotating rod 703 is fixedly connected to a turbine 704. The turbine 704 is meshed with the turbine sleeve 705, and the knocking plate 702 is close to the side of the fixed cylinder 3.

[0028] Working principle: On the basis of Example 1, when the slide bar 8 slides horizontally from left to right, through the action of the L-shaped rod 701, it can drive the L-shaped rod 701 to do synchronous movement. At the same time, since the seeding column 605 can rotate under the action of the gear 604, and the worm sleeve 705 on the seeding column 605 can also follow the seeding column 605 to do synchronous rotation movement. Since the worm sleeve 705 is engaged with the turbine 704, when the worm sleeve 705 rotates, the turbine 704 can rotate. When the turbine 704 rotates, it can drive the rotating rod 703 to rotate. Since the rotating rod 703 is fixed to the knocking plate 702, when the rotating rod 703 rotates, it can drive the knocking plate 702 to rotate, and then the fixed barrel can be knocked.

[0029] The above description is only a preferred specific implementation manner 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 scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An offshore wind power anti-scour protection device, comprising a foundation pile (1), a seabed (2) being arranged below the foundation pile (1), a fixing cylinder (3) being arranged on the outer wall of the foundation pile (1), a sliding cover (4) being slidably connected to the outer wall of the fixing cylinder (3) in a vertical direction, the sliding cover (4) comprising an inclined portion and a straight portion, a sliding rod (8) being slidably connected to the outer side of the fixing cylinder (3) in a horizontal direction, the sliding rod (8) being arranged in three groups, and an anti-scour assembly (5) being mounted on the top of the fixing cylinder (3); It is characterized in that The anti-scouring component (5) comprises a three-way hydraulic chamber (501), the three-way hydraulic chamber (501) is fixedly connected to the top of the fixed cylinder (3), one end of the interior of the three-way hydraulic chamber (501) is slidably connected to a hydraulic rod 1 (506) via a piston, the other two ports inside the three-way hydraulic chamber (501) are slidably connected to hydraulic rod 2 (504) via pistons, a pulley (507) is mounted at the port of the hydraulic rod 1 (506), round blocks (505) are fixedly connected to both sides of the fixed cylinder (3), a fixed plate 1 (503) is fixedly connected to the outside of the fixed cylinder (3), the top of the fixed plate 1 (503) is hingedly connected to an arc plate (502) via a torsion spring rotating shaft, an arc groove (509) is provided on the outside of the fixed cylinder (3), and the arc groove (509) is provided in three groups in total, and the sides of the three groups of arc grooves (509) are all A sliding groove (511) connected to the arc groove (509) is provided, and the sides of the three groups of sliding rods (8) are fixedly connected with a clamping block (510), the interiors of the three groups of arc grooves (509) are fixedly connected with a U-shaped block (513), the interiors of the three groups of U-shaped blocks (513) are elastically connected with a spring (512), the interiors of the three groups of U-shaped blocks (513) are slidably connected with a slider (514), the interiors of the three groups of U-shaped blocks (513) are slidably connected with a locking rod (515), the sides of the three groups of sliding rods (8) are equipped with an annular block (518), the interiors of the three groups of annular blocks (518) are fixedly connected with an axis core (516), the side of the fixed cylinder (3) is fixedly connected with a fixing plate 2 (517), and the fixing plate 2 (517) is provided in three groups in total, and turf is connected between the three groups of the axis core (516) and the three groups of fixing plates 2 (517) respectively.

2. An offshore wind power scour protection device according to claim 1, characterized in that: The hydraulic rod one (506) is located on the movement track of the arc plate (502), and the two groups of round blocks (505) are respectively located on the two groups of hydraulic rod two (504).

3. The offshore wind power anti-scour protection device according to claim 1, characterized in that: The three groups of locking blocks (510) are each provided with a locking groove adapted to match the three groups of locking rods (515).

4. The offshore wind power anti-scour protection device according to claim 1, characterized in that: The sides of the three groups of sliding rods (8) are all equipped with sowing assemblies (6).

5. An offshore wind power scour protection device according to claim 4, characterized in that: The sowing assembly (6) comprises an L-shaped support rod (606), one end of which is fixedly connected to the side of the sliding rod (8), the other end of which is fixedly connected to a feed barrel (607), the outer side of which is rotatably connected to a sowing column (605), the outer side of which is fixedly connected to a worm sleeve (705), the other end of which is fixedly connected to a gear (604), and an arc-shaped rack (608) is fixedly connected to the edge of the seabed (2), the gear (604) meshing with the arc-shaped rack (608).

6. An offshore wind power scour protection device according to claim 5, characterized in that: The seeding column (605) is a hollow structure with holes formed around it, and the feed barrel (607) is connected to the seeding column (605).

7. An offshore wind power scour protection device according to claim 6, characterized in that: The sides of the three groups of sliding rods (8) are all equipped with knocking components (7).

8. An offshore wind power scour protection device according to claim 7, characterized in that: The knocking assembly (7) comprises an L-shaped rod (701) which is fixedly connected to the side of the sliding rod (8); a rotating rod (703) is rotatably connected to the L-shaped rod (701); one end of the rotating rod (703) is fixedly connected to a knocking plate (702); the other end of the rotating rod (703) is fixedly connected to a turbine (704); and the turbine (704) is meshed with a worm gear sleeve (705).

9. An offshore wind power scour protection device according to claim 8, characterized in that: The knocking plate (702) is close to the side surface of the fixing cylinder (3).

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