Offshore wind power jacket foundation pile sinking retainer

Abstract

The invention belongs to the technical field of wind power, and discloses an offshore wind power jacket foundation pile sinking retainer which comprises a jacket body and further comprises a guide assembly fixedly mounted at the lower end of the jacket body. The steel pipe pile is put down through the lifting device, the first floating piece and the second floating piece are located in seawater along with continuous downward movement of the first C-shaped ring and the second C-shaped ring, the hoop is always in the vertical state through generated buoyancy, and then it is guaranteed that the penetrated steel pipe pile is in the vertical state; meanwhile, the stability of the hoop and the steel pipe pile is guaranteed through cooperation of the connecting rope, the first floating piece and the second floating piece, and then the situation that the steel pipe pile swings due to the influence of seawater is reduced; the hoop and the steel pipe pile are guided through the guide assembly to be kept vertical to the guide assembly, and accurate butt joint of the steel pipe pile and the guide assembly can be guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of wind power, and specifically relates to a pile driving cage for an offshore wind power jacket foundation. Background Art

[0002] Offshore wind power refers to the technology of converting wind energy into electrical energy by installing wind turbines in the marine environment; an offshore wind power jacket is an important support structure for offshore wind turbines, mainly used to fix the fan tower barrel and foundation, and is suitable for areas with a water depth of 30 - 60 meters. Currently, the jacket is usually fixed by pile foundation method. With the help of lifting equipment, steel pipe piles are inserted into the steel pipe cage at the lower end of the jacket, and 4 - 8 steel pipe piles (with a diameter of 1.5 - 3 meters) are driven into the seabed 20 - 40 meters deep by means of a hydraulic hammer or a vibratory hammer. However, when the jacket is placed on the seabed, when the steel pipe pile is inserted into the cage of the jacket, the steel pipe pile is affected by seawater and swings, making it difficult to insert into the cage. Currently, by setting a guiding frame at the top of the jacket and a sonar monitoring device at the bottom, it is ensured that the steel pipe pile vertically moves down and penetrates into the leg column of the jacket. However, due to the high height of the jacket, when the steel pipe pile passes through the top guiding frame, as the penetration depth gradually increases, the end of the steel pipe pile will still swing under the influence of seawater. At the same time, the jacket is usually difficult to recycle and will remain on the sea surface permanently. Setting a guiding frame to assist in installation increases the manufacturing cost of the jacket. Therefore, a pile driving cage for an offshore wind power jacket foundation is proposed. Summary of the Invention

[0003] To solve the problems raised in the above background art, the present invention provides a pile driving cage for an offshore wind power jacket foundation, which solves the problem that when the existing steel pipe pile vertically moves down and penetrates into the leg column of the jacket with the help of the guiding frame at the top of the jacket, as the penetration depth gradually increases, the end of the steel pipe pile will still swing under the influence of seawater.

[0004] To achieve the above object, the present invention provides the following technical solution: A pile driving cage for an offshore wind power jacket foundation, including a jacket main body, and further including:

[0005] A guiding component, which is fixedly installed at the lower end of the jacket main body;

[0006] A traction component, which is arranged outside the jacket main body;

[0007] A stabilizing component, which is connected to the end of the traction component;

[0008] A steel pile main body, which passes through the guiding component through the stabilizing component and the traction component;

[0009] Among them, the traction assembly includes a support frame fixedly installed at the top of the jacket main body. A slip ring is fixedly installed at the top of the support frame. A connecting rope passes through the inside of the slip ring, and the connecting rope passes through the inside of the guiding assembly;

[0010] The stabilizing assembly includes a second C-shaped ring, a first C-shaped ring connected to one end of the connecting rope. The other end of the connecting rope is docked with the stabilizing assembly through a docking member. A first floating member is fixedly installed on the periphery of the first C-shaped ring, and a second floating member is fixedly installed on the periphery of the second C-shaped ring;

[0011] The first floating member and the second C-shaped ring are combined to form a hoop, and the hoop floats on the sea surface in its initial state and is connected to the jacket main body;

[0012] The steel pile main body is lifted by a hoisting device, and the bottom penetrates into the hoop formed by the first floating member and the second C-shaped ring, and drives the stabilizing assembly to move downward by the weight of the steel pile main body itself.

[0013] Preferably, the guiding assembly includes a support plate fixedly installed outside the jacket main body. A retaining frame is fixedly installed in the middle of the support plate. Guide frames are fixedly installed at both ends of the support plate, and pulleys for supporting the connecting rope are installed on the sides of the guide frames.

[0014] Preferably, the cross-section of the guide frame is C-shaped, and the diameter of the guide frame gradually decreases from top to bottom;

[0015] The hoop and the steel pipe pile move downward into the guide frame, so that the steel pipe pile and the retaining frame remain vertical.

[0016] Preferably, the stabilizing assembly further includes a connecting member fixedly installed outside the second C-shaped ring. A transmission member is movably arranged inside the connecting member. An elastic member for outwardly propping the transmission member is arranged inside the connecting member. A limit hook is fixedly installed on the outside of the transmission member, and a docking hook is fixedly installed on the outside of the first C-shaped ring.

[0017] Preferably, a guiding groove for the transmission member to slide is opened on the side of the connecting member;

[0018] The limit hook is engaged with the docking hook, so that the first floating member and the second C-shaped ring are combined to form a hoop.

[0019] Preferably, guiding lugs are fixedly installed on the inner wall of the guide frame;

[0020] The hoop enters the guide frame and moves downward along its inside. The transmission member contracts into the connecting member under the action of the guiding lugs, so that the limit hook is disengaged from the engagement with the docking hook.

[0021] Preferably, the stabilizing component further includes a connecting plate fixedly installed at the bottom of the transmission member. A transmission rod is hinged inside the connecting member. Rectangular grooves are formed at both ends of the transmission rod. One end of the transmission rod is movably connected to the connecting plate, and the other end of the transmission rod is movably connected to a receiving plate for receiving the steel pile body.

[0022] Preferably, a limiting rod is fixedly installed at one end of the receiving plate. The docking member penetrates into the inside of the connecting member, and a notch for the limiting rod to engage is formed on the outer portion of the docking member.

[0023] Preferably, grooves are symmetrically formed at the top of the cage, corresponding to the receiving plate, and the width of the grooves is greater than the width of the receiving plate;

[0024] When the steel pipe pile and the receiving plate enter the cage and the grooves, when the receiving plate contracts into the connecting member, the second C-shaped ring floats upward under the buoyancy of the second floating member.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] In the present invention, the steel pipe pile is lowered by a hoisting device, and the first C-shaped ring and the second C-shaped ring are carried and moved downward synchronously. During the downward movement, the connecting rope rotates with the guiding component and the slip ring as the support points. At the same time, the clamp is kept in a taut state through the connecting rope. As the first C-shaped ring and the second C-shaped ring continue to move downward, the first floating member and the second floating member are located in the sea water, and the generated buoyancy keeps the clamp in a vertical state all the time, thereby ensuring that the inserted steel pipe pile is in a vertical state. At the same time, the stability of the clamp and the steel pipe pile is ensured through the cooperation of the connecting rope with the first floating member and the second floating member, thereby reducing the swing of the steel pipe pile affected by the sea water. Since the connecting rope passes through the guiding component, as the clamp and the steel pipe pile move downward under the guidance of the connecting rope and gradually approach the guiding component, the guiding component guides the clamp and the steel pipe pile to keep them vertical with the guiding component, so as to ensure the precise docking of the steel pipe pile and the guiding component;

[0027] In the present invention, the first C-shaped ring and the second C-shaped ring form a clamp to guide the steel pipe pile to move downward and dock with the cage. After the docking is completed, the first C-shaped ring and the second C-shaped ring are separated and float on the water surface under the action of the first floating member and the second floating member respectively, so that they can be recycled, reducing the manufacturing cost of the jacket body. At the same time, before the jacket body is lowered into the water, the traction component and the stabilizing component are installed first, reducing the installation difficulty and recovery difficulty of the steel pipe pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of the overall external structure of the present invention;

[0029] Figure 2 is a schematic diagram of the cooperation structure of the steel pile body and the jacket body of the present invention;

[0030] Figure 3 Schematic diagram of the external structure of the stability component and the guiding component of the present invention;

[0031] Figure 4 Schematic diagram of the external structure of the traction component of the present invention;

[0032] Figure 5 Schematic diagram of the disassembled structure of the stability component of the present invention;

[0033] Figure 6 Schematic diagram of the internal planar structure of the guiding component and the stability component of the present invention;

[0034] Figure 7 Schematic diagram of the cooperation structure of the stability component, the guiding component and the traction component of the present invention;

[0035] Figure 8 For the present invention Figure 7 Enlarged structure schematic diagram at position A in

[0036] In the figure: 1, jacket main body; 2, steel pile main body; 3, stability component; 31, first C-shaped ring; 32, first floating member; 33, second C-shaped ring; 34, second floating member; 311, connecting member; 312, docking hook; 313, transmission member; 314, limit hook; 315, elastic member; 321, connecting plate; 322, limit rod; 323, bearing plate; 324, transmission rod; 4, guiding component; 41, guiding frame; 42, guiding lug; 43, pulley; 44, support plate; 45, cage; 5, traction component; 51, support frame; 52, slip ring; 53, connecting rope; 54, docking member. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0038] As Figures 1 to 8 shown, the present invention provides an offshore wind power jacket foundation pile-holding cage, which includes a jacket main body 1, and further includes:

[0039] A guiding component 4, which is fixedly installed at the lower end of the jacket main body 1;

[0040] A traction component 5, which is arranged outside the jacket main body 1;

[0041] The stabilizing component 3 is connected to the end of the towing component 5;

[0042] The steel pile main body 2 passes through the guiding component 4 together with the stabilizing component 3 and the towing component 5;

[0043] Among them, the towing component 5 includes a support frame 51 fixedly installed on the top of the jacket main body 1. A slip ring 52 is fixedly installed on the top of the support frame 51. A connecting rope 53 passes through the inside of the slip ring 52, and the connecting rope 53 passes through the inside of the guiding component 4;

[0044] The stabilizing component 3 includes a second C-shaped ring 33, a first C-shaped ring 31 connected to one end of the connecting rope 53. The other end of the connecting rope 53 is docked with the stabilizing component 3 through a docking member 54. A first floating member 32 is fixedly installed on the periphery of the first C-shaped ring 31, and a second floating member 34 is fixedly installed on the periphery of the second C-shaped ring 33;

[0045] The first floating member 32 and the second C-shaped ring 33 are combined to form a hoop. In the initial state, the hoop floats on the sea surface and is connected to the jacket main body 1;

[0046] The steel pile main body 2 is lifted by a hoisting device, and the bottom penetrates into the hoop formed by the first floating member 32 and the second C-shaped ring 33. The weight of the steel pile main body 2 itself drives the stabilizing component 3 to move downward.

[0047] The first C-shaped ring 31 and the second C-shaped ring 33 are combined to form a hoop. In the initial state, the hoop floats on the water surface and is connected to the jacket main body 1. The jacket main body 1 and the hoop can be connected by a hydraulic clamping mechanism. At the same time, the connecting rope 53 forms a closed loop. The steel pipe pile is lifted by a hoisting device and the bottom penetrates into the hoop. The steel pipe pile is lowered by the hoisting device and drives the first C-shaped ring 31 and the second C-shaped ring 33 to move downward synchronously. During the downward movement, the connecting rope 53 rotates with the guiding component 4 and the slip ring 52 as the support points. At the same time, the hoop is kept in a taut state through the connecting rope 53. As the first C-shaped ring 31 and the second C-shaped ring 33 continue to move downward, the first floating member 32 and the second floating member 34 are located in the sea water, and the buoyancy generated keeps the hoop always in a vertical state, thus ensuring that the penetrated steel pipe pile is in a vertical state. At the same time, the stability of the hoop and the steel pipe pile is ensured through the cooperation of the connecting rope 53 with the first floating member 32 and the second floating member 34, thereby reducing the situation that the steel pipe pile swings under the influence of sea water.

[0048] As Figure 3 、 Figure 6 and Figure 7 shown, the guiding component 4 includes a support plate 44 fixedly installed on the outside of the jacket main body 1. A cage 45 is fixedly installed in the middle of the support plate 44. Guide frames 41 are fixedly installed at both ends of the support plate 44. A pulley 43 for supporting the connecting rope 53 is installed on the side of the guide frame 41;

[0049] The cross-section of the guide frame 41 is C-shaped, and the diameter of the guide frame 41 gradually decreases from top to bottom;

[0050] The hoop and the steel pipe pile move downward into the guide frame 41, so that the steel pipe pile and the cage 45 are kept vertical.

[0051] Since the connecting rope 53 passes through the pulley 43, as the hoop and the steel pipe pile move downward under the guidance of the connecting rope 53 and gradually approach the cage 45, the hoop enters the guide frame 41, and the guide frame 41 guides the hoop and the steel pipe pile to keep vertical with the cage 45, thus ensuring the precise docking of the steel pipe pile and the guiding assembly 4.

[0052] As Figures 5 - 7 shown, the stabilizing assembly 3 further includes a connecting piece 311 fixedly installed outside the second C-shaped ring 33. A transmission piece 313 is movably arranged inside the connecting piece 311. An elastic piece 315 for outwardly propping up the transmission piece 313 is arranged inside the connecting piece 311. A limiting hook 314 is fixedly installed outside the transmission piece 313, and a docking hook 312 is fixedly installed outside the first C-shaped ring 31;

[0053] A guiding groove for the transmission piece 313 to slide is formed on the side of the connecting piece 311;

[0054] The limiting hook 314 is engaged with the docking hook 312, so that the first floating piece 32 and the second C-shaped ring 33 are combined to form a hoop;

[0055] Guiding lugs 42 are fixedly installed on the inner wall of the guide frame 41;

[0056] When the hoop enters the guide frame 41 and moves downward along its interior, the transmission piece 313 contracts into the connecting piece 311 under the action of the guiding lug 42, so that the limiting hook 314 is disengaged from the engagement with the docking hook 312.

[0057] Through the contact between the first C-shaped ring 31 and the second C-shaped ring 33, the docking hook 312 is located at the top of the connecting piece 311. Through the engagement between the limiting hook 314 and the docking hook 312, the first C-shaped ring 31 and the second C-shaped ring 33 form a hoop, and the steel pipe pile penetrates into the hoop. Following the downward movement of the steel pipe pile, under the guidance of the connecting rope 53, it enters the interior of the guide frame 41 and moves downward along the guide frame 41, so that the steel pipe pile and the cage 45 are kept vertical. The transmission piece 313 is guided by the guiding lug 42 and moves into the connecting piece 311 and compresses the elastic piece 315, so that the limiting hook 314 is disengaged from the engagement with the docking hook 312. At this time, the first C-shaped ring 31 moves upward under the buoyancy of the first floating piece 32 and floats on the water surface with the first C-shaped ring 31 for recycling.

[0058] As Figures 5 - 8As shown in the figure, the stabilizing component 3 further includes a connecting plate 321 fixedly installed at the bottom of the transmission member 313. A transmission rod 324 is hinged inside the connecting member 311. Rectangular grooves are provided at both ends of the transmission rod 324. One end of the transmission rod 324 is movably connected to the connecting plate 321, and the other end of the transmission rod 324 is movably connected to a receiving plate 323 for receiving the steel pile body 2.

[0059] A limiting rod 322 is fixedly installed at one end of the receiving plate 323. The docking member 54 penetrates into the inside of the connecting member 311, and a notch for the limiting rod 322 to engage is provided on the outer part of the docking member 54.

[0060] Grooves are symmetrically provided at the top of the cage 45, corresponding to the receiving plate 323, and the width of the grooves is greater than the width of the receiving plate 323.

[0061] When the steel pipe pile and the receiving plate 323 enter the cage 45 and the grooves, when the receiving plate 323 contracts into the connecting member 311, the second C-shaped ring 33 floats upward under the buoyancy of the second floating member 34.

[0062] Through the hoop and into the guide frame 41, during the downward movement, the transmission member 313 contacts the guiding lug 42. At this time, the bottom of the steel pipe pile is located inside the cage 45, and the receiving plate 323 is located in the groove. The transmission member 313 moves into the connecting member 311 under the guiding action of the guiding lug 42. The transmission rod 324 is pushed by the connecting plate 321 to rotate, so that the receiving plate 323 contracts into the inside of the connecting member 311. At this time, the second C-shaped ring 33 can float on the water surface under the action of the second floating member 34 for recycling.

[0063] During the movement of the receiving plate 323 into the connecting member 311, the limiting rod 322 disengages from the notch of the docking member 54, so that the docking member 54 is disconnected from the connecting member 311, thereby reducing the weight of the second C-shaped ring 33 and improving the floating efficiency.

[0064] The working principle and usage process of the present invention:

[0065] The hoop is formed by combining the first C-shaped ring 31 and the second C-shaped ring 33. The hoop floats on the water surface in its initial state and is connected to the jacket body 1. At the same time, the connecting rope 53 forms a closed loop. The steel pipe pile is lifted by a lifting device, and its bottom penetrates into the hoop and contacts the receiving plate 323. The steel pipe pile is lowered by the lifting device, and the first C-shaped ring 31 and the second C-shaped ring 33 are carried down synchronously. During the downward movement, the connecting rope 53 rotates with the guiding assembly 4 and the slip ring 52 as the supporting points. At the same time, the hoop is in a taut state through the connecting rope 53. As the first C-shaped ring 31 and the second C-shaped ring 33 continue to move downward, the first floating member 32 and the second floating member 34 are located in the seawater, and the buoyancy generated keeps the hoop in a vertical state all the time, thus ensuring that the penetrated steel pipe pile is in a vertical state. At the same time, the stability of the hoop and the steel pipe pile is ensured through the cooperation of the connecting rope 53 with the first floating member 32 and the second floating member 34, thereby reducing the situation that the steel pipe pile swings due to the influence of seawater;

[0066] Since the connecting rope 53 passes through the pulley 43, as the hoop and the steel pipe pile move downward under the guidance of the connecting rope 53 and gradually approach the cage 45, the hoop enters the guiding frame 41. The guiding frame 41 guides the hoop and the steel pipe pile to keep them vertical with the cage 45, so as to ensure the precise docking of the steel pipe pile and the guiding assembly 4;

[0067] Through the contact between the first C-shaped ring 31 and the second C-shaped ring 33, the docking hook 312 is located at the top of the connecting member 311. The first C-shaped ring 31 and the second C-shaped ring 33 form a hoop through the engagement of the limiting hook 314 with the docking hook 312. The steel pipe pile penetrates into the hoop and follows the steel pipe pile downward. Under the guidance of the connecting rope 53, it enters the guiding frame 41 and moves downward along the guiding frame 41, keeping the steel pipe pile vertical with the cage 45. The transmission member 313 is guided by the guiding lug 42 and moves into the connecting member 311 and compresses the elastic member 315, causing the limiting hook 314 to disengage from the docking hook 312. At this time, the first C-shaped ring 31 moves upward under the buoyancy of the first floating member 32 and floats on the water surface for recycling;

[0068] As the hoop enters the guiding frame 41, during the downward movement, the transmission member 313 contacts the guiding lug 42. At this time, the bottom of the steel pipe pile is located inside the cage 45, and the receiving plate 323 is located in the groove. The transmission member 313 is guided by the guiding lug 42 and moves into the connecting member 311. The connecting plate 321 is used to push the transmission rod 324 to rotate, causing the receiving plate 323 to contract into the connecting member 311. At this time, the second C-shaped ring 33 can float on the water surface for recycling under the action of the second floating member 34;

[0069] During the movement of the receiving plate 323 towards the inside of the connecting member 311, the limiting rod 322 disengages from the notch of the docking member 54, so that the docking member 54 can be disengaged from the connection with the connecting member 311, thereby reducing the weight of the second C-shaped ring 33 and improving the floating efficiency.

[0070] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0071] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An offshore wind power jacket foundation pile driving cage, comprising a jacket main body (1), characterized in that, It further includes: A guiding component (4), which is fixedly installed at the lower end of the jacket main body (1); A traction component (5), which is arranged outside the jacket main body (1); A stabilizing component (3), which is connected to the end of the traction component (5); A steel pile main body (2), which passes through the guiding component (4) with the stabilizing component (3) and the traction component (5); Wherein, the traction component (5) includes a support frame (51) fixedly installed at the top of the jacket main body (1), a slip ring (52) is fixedly installed at the top of the support frame (51), a connecting rope (53) passes through the inside of the slip ring (52), and the connecting rope (53) passes through the inside of the guiding component (4); The stabilizing component (3) includes a second C-shaped ring (33), a first C-shaped ring (31) connected to one end of the connecting rope (53), the other end of the connecting rope (53) is docked with the stabilizing component (3) through a docking member (54), a first floating member (32) is fixedly installed on the periphery of the first C-shaped ring (31), and a second floating member (34) is fixedly installed on the periphery of the second C-shaped ring (33); The first floating member (32) and the second C-shaped ring (33) are combined to form a hoop, and the hoop floats on the sea surface in the initial state and is connected to the jacket main body (1); The steel pile main body (2) is hoisted by a hoisting device, and the bottom penetrates into the hoop formed by the first floating member (32) and the second C-shaped ring (33), and the stabilizing component (3) is driven to move downward by the weight of the steel pile main body (2) itself.

2. The pile driving cage for the jacket foundation of offshore wind turbines according to claim 1, wherein: The guiding component (4) includes a support plate (44) fixedly installed outside the jacket main body (1), a holding frame (45) is fixedly installed in the middle of the support plate (44), guiding frames (41) are fixedly installed at both ends of the support plate (44), and pulleys (43) for supporting the connecting rope (53) are installed on the side of the guiding frame (41).

3. The pile sinking cage for the jacket foundation of the offshore wind turbine according to claim 2, characterized in that: The cross-section of the guiding frame (41) is C-shaped, and the diameter of the guiding frame (41) gradually decreases from top to bottom; The hoop and the steel pipe pile move downward into the guiding frame (41) to keep the steel pipe pile vertical with the holding frame (45).

4. The pile sinking cage for the jacket foundation of the offshore wind turbine according to claim 2, wherein: The stabilizing component (3) further includes a connecting member (311) fixedly installed outside the second C-shaped ring (33), a transmission member (313) is movably arranged inside the connecting member (311), an elastic member (315) for outwardly propping the transmission member (313) is arranged inside the connecting member (311), a limiting hook (314) is fixedly installed on the outside of the transmission member (313), and a docking hook (312) is fixedly installed on the outside of the first C-shaped ring (31).

5. The pile sinking cage for the jacket foundation of the offshore wind turbine according to claim 4, wherein: A guiding groove for the transmission member (313) to slide is formed on the side of the connecting member (311); The limiting hook (314) is engaged with the docking hook (312) to combine the first floating member (32) and the second C-shaped ring (33) to form a hoop.

6. The pile driving cage for the jacket foundation of the offshore wind turbine according to claim 5, characterized in that: Guide lugs (42) are fixedly installed on the inner wall of the guiding frame (41); The hoop enters the guide frame (41) and moves downward along its interior. Under the action of the guiding lug (42), the transmission member (313) contracts into the connecting member (311), causing the limit hook (314) to disengage from the docking hook (312).

7. The pile driving cage for the jacket foundation of the offshore wind turbine according to claim 6, characterized in that: The stabilizing assembly (3) further includes a connecting plate (321) fixedly installed at the bottom of the transmission member (313). A transmission rod (324) is hinged inside the connecting member (311). Rectangular grooves are formed at both ends of the transmission rod (324). One end of the transmission rod (324) is movably connected to the connecting plate (321), and the other end of the transmission rod (324) is movably connected to a receiving plate (323) for receiving the steel pile body (2).

8. The pile sinking cage for the jacket foundation of the offshore wind turbine according to claim 7, wherein: A limiting rod (322) is fixedly installed at one end of the receiving plate (323). The docking member (54) penetrates into the inside of the connecting member (311), and a notch for the limiting rod (322) to engage is formed on the outer surface of the docking member (54).

9. The pile driving cage for the jacket foundation of the offshore wind turbine according to claim 8, wherein: Grooves are symmetrically formed at the top of the cage (45), corresponding to the receiving plate (323), and the width of the grooves is greater than the width of the receiving plate (323); The steel pipe pile and the receiving plate (323) enter the cage (45) and the grooves. When the receiving plate (323) contracts into the connecting member (311), the second C-ring (33) floats upward under the buoyancy of the second floating member (34).

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