Offshore wind power pile foundation scouring protection device

Abstract

The invention discloses an offshore wind power pile foundation scouring protection device, and relates to the technical field of wind power generation auxiliary equipment. The device comprises a base plate, a plurality of protective pipe pieces are arranged on the upper surface of the base plate, and a supporting ring is fixedly arranged on the lower surface of the base plate; according to the wind power pile foundation anti-scour protection device, the protective pipe piece, namely the base plate is arranged, the protective pipe piece is fixed to the base plate, the wind power pile foundation is wrapped with the protective pipe piece, anti-scour protection is conducted on the wind power pile foundation, the wind power pile foundation is prevented from being scoured by seawater and silt, and the service life of the wind power pile foundation is prolonged; by means of the locking assemblies, the splicing assemblies and the fixing assemblies, the two protection pipe pieces in the horizontal direction can be fixed to the base disc, meanwhile, the multiple protection pipe pieces in the vertical direction can be fixed, the multiple protection pipe pieces cover the wind power pile foundation, splicing construction is flexible and convenient, the convenience of construction operation of the protection pipe pieces is improved, and the construction efficiency is improved. And meanwhile, the working efficiency of anti-scouring protection construction of the wind power pile foundation is improved, and transportation is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation auxiliary equipment, and in particular to an offshore wind power pile foundation scour protection device. Background Art

[0002] Offshore wind turbine pile foundations are key structures supporting offshore wind turbines. Steel pipe piles are driven directly into the seabed to provide stable support for the wind turbines. Pile foundations drive steel piles directly into the seabed, providing stable support for the wind turbines for at least 25 years, bearing the weight of the turbines and wind loads. After the wind turbine pile foundation is constructed on the seabed, it is usually protected by anti-scour protection devices because it is exposed to seawater all year round. However, the wind turbine pile foundation anti-scour protection devices in the existing technology still have some defects: In the existing technology, the anti-scour protection device of the wind turbine pile foundation is mostly integrated. During construction, it is fixed around the wind turbine pile foundation by a crane. Due to the high height and large diameter of the wind turbine pile foundation, the construction of the anti-scour protection device is difficult and inconvenient to transport.

[0003] In response to the above problems, the inventors proposed an offshore wind power pile foundation scour protection device to solve the above problems. Summary of the Invention

[0004] In order to solve the above problems, the purpose of the present invention is to provide an offshore wind power pile foundation scour protection device.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: an offshore wind power pile foundation scour protection device, comprising a base plate, a plurality of protective pipe segments are provided on the upper surface of the base plate, a support ring is fixedly provided on the lower surface of the base plate, an insertion groove is provided on the upper surface of the base plate, a through hole is provided on the insertion groove, a guide assembly is provided inside the protective pipe segment, a locking assembly and a splicing assembly are provided between the protective pipe segments, a fixing assembly is provided between the protective pipe segment and the base plate, and a protective assembly is provided on the protective pipe segment.

[0006] Preferably, the support ring is provided with a plurality of drainage holes, and one end of the support ring is fixedly provided with a plurality of ground-inserting rods.

[0007] Preferably, the guide assembly includes rollers, and a plurality of the rollers are provided, and the plurality of the rollers are distributed in a ring-shaped array in the protective pipe segment. A plurality of fixing rods are fixedly provided on the inner wall of the protective pipe segment, and a U-shaped sleeve is fixedly provided at one end of the fixing rod. A rotating shaft is rotatably installed inside the U-shaped sleeve, and the roller is fixedly provided in the middle of the rotating shaft.

[0008] Preferably, the locking assembly includes a fixing ring and an annular groove, the fixing ring is fixedly arranged at one end of the protective pipe segment, and the annular groove is arranged at the other end of the protective pipe segment, the fixing ring and the inner wall of the annular groove are movably plugged in, wherein the outer walls of two adjacent fixing rings are in movably contact with the peripheral wall of the plug-in groove, two movable cavities are provided at both ends of the protective pipe segment, a movable sleeve is slidingly provided inside the movable cavity, a plug-in block is fixedly provided at one end of the movable sleeve, two limiting grooves are provided at both ends of the protective pipe segment, the plug-in block and the inner wall of the limiting groove are movably plugged in, a threaded rod is rotatably installed inside the movable cavity, and one end of the threaded rod is threadedly rotatably connected to the other end of the movable sleeve.

[0009] Preferably, the bottom wall of the movable cavity is provided with a guide groove, and the bottom of the movable sleeve is slidably arranged in the guide groove.

[0010] Preferably, two worms are rotatably installed at both ends of the protective pipe segment, one end of the worm extends into the movable cavity, and a worm wheel is fixedly provided at the end of the threaded rod away from the movable sleeve. The worm and the worm wheel are meshed and connected, and one end of the worm is fixedly provided with a No. 1 hexagonal seat.

[0011] Preferably, the splicing assembly includes a fixing screw, and a plurality of the fixing screws are provided, wherein two adjacent fixing screws are respectively threadedly rotated at the two ends of a protective pipe segment, a No. 1 threaded hole is provided in the middle of the fixing ring, one end of the fixing screw is threadedly connected to the inner wall of the No. 1 threaded hole, and the other end of the fixing screw is fixedly provided with a No. 2 hexagonal seat Preferably, the fixing assembly includes a fixing frame, and several fixing frames are provided. One end of the fixing frame is fixedly connected to the inner wall of the fixing ring, and the other end of the fixing frame is rotatably mounted with an internal threaded sleeve, and the internal thread of the internal threaded sleeve is rotatably mounted with a limiting screw, and several No. 2 threaded holes are provided on the peripheral wall of the plug-in slot, and one end of the limiting screw is rotatably connected to the inner wall of the No. 2 threaded hole through thread.

[0012] Preferably, a rotating shaft is rotatably mounted on the other end of the fixing frame, one end of the rotating shaft and one end of the internal threaded sleeve are fixedly provided with bevel gears, wherein two adjacent bevel gears are meshed and connected, and a No. 3 hexagonal seat is fixedly provided on the other end of the rotating shaft.

[0013] Preferably, the protective assembly includes a protective sleeve, and several protective sleeves are provided. The protective sleeves are fixedly provided at the end of the protective pipe segment, and a sealing disk is provided at one end of the protective sleeve. A threaded protrusion is fixedly provided on one side of the sealing disk. The threaded protrusion is rotatably connected to the inner wall of one end of the protective sleeve, and a rotating handle is fixedly provided on the other side of the sealing disk.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the protective pipe segment is fixed to the base plate and wrapped around the outside of the wind turbine pile foundation to provide anti-scouring protection for the wind turbine pile foundation, thereby preventing the wind turbine pile foundation from being scoured by seawater and sediment and prolonging the service life of the wind turbine pile foundation. 2. In the present invention, by providing a locking assembly, a splicing assembly, and a fixing assembly, two horizontal protective segments can be fixed on the base plate, and multiple vertical protective segments can be fixed at the same time. The multiple protective segments are covered on the outside of the wind turbine pile foundation. The splicing construction is flexible and convenient, which improves the convenience of the protective segment construction operation, improves the operating efficiency of the wind turbine pile foundation anti-scour protection construction, and is convenient for transportation. 3. In the present invention, the guide assembly is provided, so that the protective pipe segment can be stably lowered along the wind turbine pile foundation during the construction process of the protective pipe segment, thereby improving the stability of the protective pipe segment during the construction process; 4. In the present invention, the protective assembly is provided to protect the worm, No. 1 hexagonal seat, fixed screw and No. 2 hexagonal seat, thereby preventing the worm, No. 1 hexagonal seat, fixed screw and No. 2 hexagonal seat from being exposed to seawater and corroded. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a schematic diagram of the overall structure of an offshore wind power pile foundation scour protection device of the present invention.

[0017] Figure 2 This is a schematic diagram of the protective pipe segment of the present invention in a disassembled state.

[0018] Figure 3 It is a schematic diagram of the connection structure of the guide assembly, locking assembly and protection assembly with the protection pipe segment of the present invention.

[0019] Figure 4 For the present invention Figure 3 A magnified schematic diagram of part A in FIG.

[0020] Figure 5 For the present invention Figure 3 An enlarged schematic diagram of part B in FIG.

[0021] Figure 6 For the present invention Figure 3Enlarged schematic diagram of part C in .

[0022] Figure 7 It is a schematic diagram of the cross-section of the base plate of the present invention and the connection structure of the fixing assembly, the base plate and the protective pipe segment.

[0023] Figure 8 For the present invention Figure 7 An enlarged schematic diagram of part D in FIG.

[0024] Figure 9 This is a schematic top view of the structure of an offshore wind power pile foundation scour protection device of the present invention.

[0025] Figure: 1, base plate; 2, protective pipe segment; 11, support ring; 12, drainage hole; 13, ground rod; 14, plug groove; 15, through hole; 3, guide assembly; 4, locking assembly; 6, splicing assembly; 7, fixing assembly; 8, protective assembly; 31, fixing rod; 32, U-shaped sleeve; 33, rotating shaft; 34, roller; 41, fixing ring; 42, annular groove; 43, movable cavity; 44, movable sleeve; 45, plug block; 46 , limiting groove; 47, threaded rod; 48, guide groove; 49, worm; 5, worm wheel; 51, No. 1 hexagonal seat; 61, fixing screw; 62, No. 1 threaded hole; 63, No. 2 hexagonal seat; 71, fixing frame; 72, internal threaded sleeve; 73, limiting screw; 74, No. 2 threaded hole; 75, rotating shaft; 76, bevel gear; 77, No. 3 hexagonal seat; 81, protective sleeve; 82, sealing disk; 83, threaded protrusion; 84, rotating handle. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0027] Example: Figure 1-9As shown, the present invention provides an offshore wind turbine pile foundation scour protection device, including a base plate 1, a plurality of protective pipe segments 2 are provided on the upper surface of the base plate 1, the cross-section of the protective pipe segment 2 is semicircular, a support ring 11 is fixedly provided on the lower surface of the base plate 1, a plurality of drainage holes 12 are provided on the support ring 11, and a plurality of ground insertion rods 13 are fixedly provided on one end of the support ring 11. During construction, the base plate 1 is located on the upper surface of the seabed, the support ring 11 and the ground insertion rods 13 are inserted into the seabed, and the drainage holes 12 can discharge the seawater in the support ring 11. The upper surface of the base plate 1 is provided with a plug-in groove 14, and the plug-in groove 14 is provided with a through hole 15. By providing the plug-in groove 14 and the through hole 15, the base plate 1 can be put on the outside of the wind turbine pile foundation, that is, the wind turbine pile foundation passes through the plug-in groove 14 and the through hole 15. The interior of the protective pipe segment 2 is provided with a guide assembly 3. By providing the guide assembly 3, the guide assembly 3 can improve the convenience of the assembly operation of the protective pipe segment 2. , and at the same time, the protective pipe segment 2 can be vertically lowered along the outer wall of the wind turbine pile foundation. A locking component 4 and a splicing component 6 are provided between the protective pipe segments 2. By providing the locking component 4 and the splicing component 6, the locking component 4 can connect the two horizontal protective pipe segments 2 together to form a full circle, so that the two horizontal protective pipe segments 2 can be covered on the outside of the wind turbine pile foundation. The splicing component 6 can splice the two horizontal protective pipe segments 2 together, so that different numbers of protective pipe segments 2 can be assembled according to the height of the wind turbine pile foundation. A fixing component 7 is provided between the protective pipe segment 2 and the base plate 1. By providing the fixing component 7, the fixing component 7 can fix the two horizontal protective pipe segments 2 on the upper surface of the base plate 1. A protective component 8 is provided on the protective pipe segment 2. By providing the protective component 8, the protective component 8 can protect part of the structure of the locking component 4 and the splicing component 6 to avoid being exposed to seawater and corroded.

[0028] The guide assembly 3 includes a roller 34, and a plurality of rollers 34 are provided. The plurality of rollers 34 are distributed in a ring-shaped array in the protective pipe segment 2. By arranging the rollers 34 in the protective pipe segment 2, when the crane lifts the protective pipe segment 2, during the process of the protective pipe segment 2 descending, the outer wall of the roller 34 contacts the outer wall of the wind turbine pile foundation and descends vertically along the outer wall of the wind turbine pile foundation, thereby improving the stability of the protective pipe segment 2 during the assembly operation. A plurality of fixing rods 31 are fixedly provided on the inner wall of the protective pipe segment 2, and a U-shaped sleeve 32 is fixedly provided at one end of the fixing rod 31. A rotating shaft 33 is rotatably installed inside the U-shaped sleeve 32. The roller 34 is fixedly provided in the middle of the rotating shaft 33, and the roller 34 can rotate in the U-shaped sleeve 32 through the rotating shaft 33.

[0029] The locking assembly 4 includes a fixing ring 41 and an annular groove 42. The fixing ring 41 is fixedly arranged at one end of the protective pipe segment 2, and the annular groove 42 is arranged at the other end of the protective pipe segment 2. The inner walls of the fixing ring 41 and the annular groove 42 are movably plugged in. By setting the fixing ring 41 and the annular groove 42, when the fixing ring 41 is vertically inserted into the inside of the annular groove 42, the two protective pipe segments 2 in the vertical direction can be connected together, wherein the outer walls of the two adjacent fixing rings 41 are movably contacted with the peripheral walls of the plug-in groove 14. When the two fixing rings 41 at the bottom are inserted into the inside of the plug-in groove 14, the two protective pipe segments 2 at the bottom can be connected to the upper surface of the base plate 1. Two movable cavities 43 are provided at both ends of the protective pipe segment 2. A movable sleeve 44 is slidingly provided inside the movable cavity 43. The bottom wall of the movable cavity 43 is provided with a guide groove 48. The bottom sliding of the movable sleeve 44 is set in the guide groove 48. By setting the guide groove 48, the movable sleeve 44 can slide horizontally in the movable cavity 43. A plug-in block 45 is fixedly set at one end of the movable sleeve 44. Two limit grooves 46 are set at both ends of the protective pipe segment 2. The plug-in block 45 and the inner wall of the limit groove 46 are movably plugged in. By driving the movable sleeve 44 to slide horizontally in the movable cavity 43, the movable sleeve 44 can be synchronously moved horizontally through the plug-in block 45. When the plug-in block 45 is horizontally inserted into the interior of the limit groove 46, the two protective pipe segments 2 in the horizontal direction can be connected together. A threaded rod 47 is rotatably installed inside the movable cavity 43. One end of the threaded rod 47 is threadedly rotatably connected to the other end of the movable sleeve 44. By driving the threaded rod 47 to rotate, the threaded rod 47 can drive the movable sleeve 44 to move horizontally in the movable cavity 43.

[0030] Two worms 49 are rotatably installed at both ends of the protective pipe segment 2. One end of the worm 49 extends into the movable cavity 43. A worm gear 5 is fixedly provided at the end of the threaded rod 47 away from the movable sleeve 44. The worm 49 and the worm gear 5 are meshed and connected. One end of the worm 49 is fixedly provided with a No. 1 hexagonal seat 51. By rotating the No. 1 hexagonal seat 51 (manual rotation, wrench or power tool), the No. 1 hexagonal seat 51 can rotate the worm 49, the worm 49 can rotate the worm gear 5, and the worm gear 5 can rotate the threaded rod 47.

[0031] The splicing assembly 6 includes a fixing screw 61, and several fixing screws 61 are provided, wherein two adjacent fixing screws 61 are respectively threadedly rotated on the two ends of a protective pipe segment 2, and a No. 1 threaded hole 62 is provided in the middle of the fixing ring 41. One end of the fixing screw 61 is threadedly connected to the inner wall of the No. 1 threaded hole 62, and the other end of the fixing screw 61 is fixedly provided with a No. 2 hexagonal seat 63. When the two vertical protective pipe segments 2 are connected together, that is, the upper fixing ring 41 is vertically inserted into the interior of the lower annular groove 42, the No. 2 hexagonal seat 63 is rotated, and the No. 2 hexagonal seat 63 can rotate the fixing screw 61. When the fixing screw 61 is threaded and enters the interior of the No. 1 threaded hole 62, the vertical protective pipe segment 2 can be fixed.

[0032] The fixing assembly 7 includes a fixing frame 71, which is provided with several fixing frames 71. One end of the fixing frame 71 is fixedly connected to the inner wall of the fixing ring 41, and the other end of the fixing frame 71 is rotatably installed with an internal threaded sleeve 72. The internal thread of the internal threaded sleeve 72 is rotatably installed with a limiting screw 73. A plurality of No. 2 threaded holes 74 are provided on the peripheral wall of the insertion groove 14. One end of the limiting screw 73 is threadedly connected to the inner wall of the No. 2 threaded hole 74. When the two protective pipe segments 2 at the bottom are connected to the upper surface of the base plate 1, the internal threaded sleeve 72 is driven to rotate, and the internal threaded sleeve 72 can cause the limiting screw 73 to rotate. The cam 75 is rotated to move forward or backward, and when the limit screw 73 is threaded forward to the inside of the No. 2 threaded hole 74, the two protective pipe segments 2 at the bottom can be fixed on the base plate 1. The other end of the fixing frame 71 is rotatably installed with a rotating shaft 75. One end of the rotating shaft 75 and one end of the internally threaded sleeve 72 are fixedly provided with a bevel gear 76, wherein two adjacent bevel gears 76 are meshed and connected. The other end of the rotating shaft 75 is fixedly provided with a No. 3 hexagonal seat 77. By rotating the No. 3 hexagonal seat 77, the No. 3 hexagonal seat 77 can rotate the rotating shaft 75, and the rotating shaft 75 can rotate the internally threaded sleeve 72 through the two bevel gears 76.

[0033] The protective assembly 8 includes a protective sleeve 81. Several protective sleeves 81 are provided. The protective sleeve 81 is fixedly provided at the end of the protective pipe segment 2. A blocking disc 82 is provided at one end of the protective sleeve 81. A threaded protrusion 83 is fixedly provided on one side of the blocking disc 82. The threaded protrusion 83 is rotatably connected to the inner wall of the protective sleeve 81 at one end. By providing the protective sleeve 81, the blocking disc 82 and the threaded protrusion 83, the worm 49, the No. 1 hexagonal seat 51 and the fixing screw can be fixed. 61 and the No. 2 hexagonal seat 63 are protected to prevent the worm 49, the No. 1 hexagonal seat 51, the fixed screw 61 and the No. 2 hexagonal seat 63 from being exposed to seawater and corroded. A rotating handle 84 is fixedly provided on the other side of the sealing disk 82. By manually rotating the rotating handle 84, the rotating handle 84 can rotate the sealing disk 82, and the sealing disk 82 can rotate the threaded protrusion 83, so that the sealing disk 82 can be fixed to the open end of the protective sleeve 81, or the sealing disk 82 can be removed.

[0034] Working Principle: When anti-scour protection is required for wind turbine pile foundations on the seabed, during construction, the base plate 1 is first hoisted by a crane, and the base plate 1 is vertically lowered along the wind turbine pile foundation through the insertion slots 14 and through holes 15 until the multiple ground-insertion rods 13 and support rings 11 are vertically inserted into the seabed, and the base plate 1 is located on the seabed; Subsequently, the two horizontal protective pipe segments 2 are first hoisted by a crane, and the two horizontal protective pipe segments 2 are covered on the outside of the wind turbine pile foundation. At the same time, the construction workers rotate the multiple No. 1 hexagonal seats 51 on the two protective pipe segments 2 respectively to rotate the worm 49. The worm 49 rotates the threaded rod 47 through the worm gear 5. The threaded rod 47 drives the movable sleeve 44 and the plug-in block 45 to move horizontally, so that the plug-in block 45 is horizontally inserted into the limit groove 46. At this time, the two horizontal protective pipe segments 2 are connected together. During the hoisting process, the corresponding multiple rollers 34 are connected to the wind turbine pile foundation. The two horizontal protective segments 2 are vertically lowered along the wind turbine pile foundation until the two fixing rings 41 at the bottom of the two protective segments 2 are vertically inserted into the inner wall of the insertion groove 14. Then, the plurality of No. 3 hexagonal seats 77 are rotated to rotate the rotating shaft 75. The rotating shaft 75 rotates the internal threaded sleeve 72 through the two bevel gears 76. The internal threaded sleeve 72 causes the limiting screw 73 to advance in thread. After the limiting screw 73 advances in thread into the No. 2 threaded hole 74, the rotation of the No. 3 hexagonal seat 77 is stopped. At this time, the two horizontal protective segments 2 are fixed to the upper surface of the base plate 1. Subsequently, according to the overall height of the wind turbine pile foundation, multiple protective pipe segments 2 are spliced and fixed according to the height of the wind turbine pile foundation. When a protective pipe segment 2 is connected to the upper side of a protective pipe segment 2 below, that is, a fixing ring 41 above is vertically inserted into an annular groove 42 below, and the construction personnel rotate the No. 2 hexagonal seat 63 to make the fixing screw 61 threadedly rotate into the No. 1 threaded hole 62, so that the upper protective pipe segment 2 can be fixed to the lower protective pipe segment 2, until the multiple protective pipe segments 2 in the vertical direction cover the entire wind turbine pile foundation, thereby protecting the wind turbine pile foundation from scouring. When the protective pipe segment 2 is subsequently replaced, the above steps are reversed to dismantle and then install the protective pipe segment 2 to achieve replacement of the protective pipe segment 2.

[0035] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. An offshore wind power pile foundation scour protection device, comprising a base plate (1), characterized in that: A plurality of protective pipe segments (2) are provided on the upper surface of the base plate (1), a support ring (11) is fixedly provided on the lower surface of the base plate (1), a plug-in slot (14) is provided on the upper surface of the base plate (1), a through hole (15) is provided on the plug-in slot (14), a guide assembly (3) is provided inside the protective pipe segment (2), a locking assembly (4) and a splicing assembly (6) are provided between the protective pipe segments (2), a fixing assembly (7) is provided between the protective pipe segment (2) and the base plate (1), and a protective assembly (8) is provided on the protective pipe segment (2).

2. The offshore wind power pile foundation scour protection device according to claim 1, characterized in that: The support ring (11) is provided with a plurality of drainage holes (12), and one end of the support ring (11) is fixedly provided with a plurality of ground-inserting rods (13).

3. The offshore wind power pile foundation scour protection device according to claim 1, characterized in that: The guide assembly (3) includes a roller (34), a plurality of the rollers (34) are provided, and the plurality of the rollers (34) are distributed in a ring-shaped array inside the protective pipe segment (2). A plurality of fixing rods (31) are fixedly provided on the inner wall of the protective pipe segment (2), a U-shaped sleeve (32) is fixedly provided at one end of the fixing rod (31), a rotating shaft (33) is rotatably installed inside the U-shaped sleeve (32), and the rollers (34) are fixedly provided in the middle of the rotating shaft (33).

4. The offshore wind power pile foundation scour protection device according to claim 1, characterized in that: The locking assembly (4) comprises a fixing ring (41) and an annular groove (42), wherein the fixing ring (41) is fixedly arranged at one end of the protective tube segment (2), and the annular groove (42) is arranged at the other end of the protective tube segment (2), and the inner walls of the fixing ring (41) and the annular groove (42) are movably plugged in, wherein the outer walls of two adjacent fixing rings (41) are in movably contact with the peripheral wall of the plug-in groove (14), and two movable cavities (43) are provided at both ends of the protective tube segment (2), and a movable sleeve (44) is slidably provided inside the movable cavity (43), and a plug-in block (45) is fixedly provided at one end of the movable sleeve (44), and two limiting grooves (46) are provided at both ends of the protective tube segment (2), and the plug-in block (45) and the inner wall of the limiting groove (46) are movably plugged in, and a threaded rod (47) is rotatably installed inside the movable cavity (43), and one end of the threaded rod (47) is threadedly rotatably connected to the other end of the movable sleeve (44).

5. The offshore wind power pile foundation scour protection device according to claim 4, characterized in that: The bottom wall of the movable cavity (43) is provided with a guide groove (48), and the bottom of the movable sleeve (44) is slidably arranged in the guide groove (48).

6. The offshore wind power pile foundation scour protection device according to claim 4, characterized in that: Two worms (49) are rotatably mounted on both ends of the protective pipe segment (2), one end of the worm (49) extends into the movable cavity (43), and a worm wheel (5) is fixedly mounted on one end of the threaded rod (47) away from the movable sleeve (44). The worm (49) and the worm wheel (5) are meshed and connected, and one end of the worm (49) is fixedly mounted on a No. 1 hexagonal seat (51).

7. The offshore wind power pile foundation scour protection device according to claim 4, characterized in that: The splicing assembly (6) includes a fixing screw (61), and a plurality of the fixing screws (61) are provided, wherein two adjacent fixing screws (61) are respectively threadedly rotated at the two ends of a protective pipe segment (2), a No. 1 threaded hole (62) is provided in the middle of the fixing ring (41), one end of the fixing screw (61) is threadedly connected to the inner wall of the No. 1 threaded hole (62), and the other end of the fixing screw (61) is fixedly provided with a No. 2 hexagonal seat (63).

8. The offshore wind power pile foundation scour protection device according to claim 4, characterized in that: The fixing assembly (7) includes a fixing frame (71), and a plurality of fixing frames (71) are provided. One end of the fixing frame (71) is fixedly connected to the inner wall of the fixing ring (41), and the other end of the fixing frame (71) is rotatably mounted with an internal threaded sleeve (72). The internal thread of the internal threaded sleeve (72) is rotatably mounted with a limiting screw (73). A plurality of No. 2 threaded holes (74) are provided on the peripheral wall of the plug-in slot (14), and one end of the limiting screw (73) is rotatably connected to the inner wall of the No. 2 threaded hole (74).

9. The offshore wind power pile foundation scour protection device according to claim 8, characterized in that: A rotating shaft (75) is rotatably mounted on the other end of the fixing frame (71), and a bevel gear (76) is fixedly mounted on one end of the rotating shaft (75) and one end of the internal threaded sleeve (72), wherein two adjacent bevel gears (76) are meshedly connected, and a No. 3 hexagonal seat (77) is fixedly mounted on the other end of the rotating shaft (75).

10. The offshore wind power pile foundation scour protection device according to claim 1, characterized in that: The protection assembly (8) includes a protection sleeve (81), a plurality of the protection sleeves (81) are provided, and the protection sleeves (81) are fixedly provided at the end of the protection pipe segment (2). A blocking disk (82) is provided at one end of the protection sleeve (81), and a threaded protrusion (83) is fixedly provided on one side of the blocking disk (82). The threaded protrusion (83) is rotatably connected to the inner wall of one end of the protection sleeve (81), and a rotating handle (84) is fixedly provided on the other side of the blocking disk (82).

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