Device and method for raising / lowering spud leg of wind turbine installation vessel

Abstract

The present invention relates to the technical field of vessels, and provides a device and method for raising / lowering a spud leg of a wind turbine installation vessel. The present invention comprises a spud leg and an installation box; corresponding through holes are formed in the top and bottom of the installation box; the spud leg is arranged in the through holes of the installation box and penetrates through the installation box; a first installation platform, a second installation platform, and a third installation platform that are vertically distributed are provided in the installation box, the first installation platform is provided with fixing devices for keeping the spud leg static, the second installation platform and the third installation platform are provided with pressing devices for controlling the spud leg to move downwards, an adjustment device for controlling the spud leg to move up and down is provided at the bottom of the installation box, and the adjustment device comprises a contraction component capable of being connected to or separated from the spud leg and a first winch connected to the contraction component; and two first racks which are symmetrical about the axis are arranged in the axial direction of the side wall of the spud leg. The present invention can improve the raising / lowering speed of the spud leg, reduce the risk that gears get stuck, and improve the working efficiency of the wind power installation vessel.

Description

Wind power installation ship pile leg lifting device and method Technical Field

[0001] The present invention belongs to the technical field of ships, and in particular relates to a wind power installation ship pile leg lifting device and method. Background Art

[0002] Compared to land-based wind power construction, offshore wind turbine construction is significantly more challenging. Wind turbine installation vessels, as the core of offshore wind power construction, play a crucial role. In recent years, my country's offshore wind power development has entered a rapid development phase, with the rapid construction of a number of wind turbine installation vessels. Examples include bottom-mounted wind turbine installation vessels, self-elevating wind turbine installation vessels, and self-propelled self-elevating wind turbine installation vessels. These vessels are secured to the seabed by lowering pile legs, which are raised and lowered using a lifting mechanism. Therefore, the lifting mechanism plays a crucial role in securing the wind turbine installation vessel.

[0003] The conventional pile leg lifting and locking device is used to mesh the control gear with the pile leg rack. Since the number of lifts and drops during offshore platform operation is relatively small, marine organisms and impurities may exist in the ocean during normal offshore platform operation, clinging to the gear and rack of the locking device and causing jams in the pile leg lifting process, seriously affecting the pile leg lifting efficiency. If the lifting device fails, maintenance is difficult and the operating environment is dangerous. In response to the above problems, the present invention proposes a rapid lifting device for a wind power installation vessel to solve the above problems.

[0004] Summary of the Invention

[0005] In order to solve the problem of jamming and slow speed during the lifting stage of the pile legs of a wind turbine installation vessel, the present invention provides a wind turbine installation vessel pile leg lifting device and method, which can effectively improve the lifting speed of the pile legs and reduce the occurrence rate of failures.

[0006] The technical solutions of the present invention are as follows:

[0007] A wind power installation ship pile leg lifting device comprises a pile leg and an installation box, the top and bottom of the installation box are provided with corresponding through holes, the pile leg is placed in the through holes of the installation box and passes through the installation box; at the same time, two first racks symmetrical about the axis are provided in the axial direction of the side wall of the pile leg; a first mounting platform, a second mounting platform and a third mounting platform are vertically distributed in the installation box, and a fixing device for keeping the pile leg stationary is provided on the first mounting platform, and the fixing device has two, respectively located on both sides of the pile leg provided with the first rack; each fixing device comprises a first motor, a third rack and a fixed clutch mechanism, the power output end of the first motor is connected to the third rack through the fixed clutch mechanism; the fixed clutch mechanism drives the third rack to move toward / away from the first rack under the power output of the first motor, prompting the third rack to be in the first and second limit positions. and a control mechanism for adjusting the position of the pile leg and the control mechanism for adjusting the position of the pile leg; the control mechanism for adjusting the position of the pile leg being adjusted to a predetermined value and a predetermined time interval; and a control mechanism for adjusting the position of the pile leg being adjusted to a predetermined value.

[0008] An adjusting device for controlling the lifting of the pile legs is provided at the bottom of the installation box, the adjusting device comprising a retracting member that can be connected to or detached from the pile legs and a first winch connected to the retracting member; the retracting member comprises a retracting control mechanism and a second rack; the second rack can engage with or disengage from the first rack under the actuation of the retracting control mechanism; when the second rack engages with the first rack, the lifting of the pile legs is controlled under the power actuation of the first winch.

[0009] Furthermore, the retraction control mechanism includes two arc-shaped plates, a first electromagnet and a second electromagnet, which surround the pile leg in a ring shape. A second rack is provided in the middle part of the opposite side of the first electromagnet and the second electromagnet, and the second rack corresponds to the first rack on the pile leg. A first generator and a second generator are respectively provided on the first electromagnet and the second electromagnet on the side away from the second rack. The first generator and the second generator are respectively connected to the winch.

[0010] Furthermore, a first mounting seat and a second mounting seat are respectively provided at the edges of the first electromagnet and the second electromagnet, a first spring is provided between the first mounting seat and the second mounting seat, one end of the first spring is fixedly connected to the first mounting seat, and the other end is fixedly connected to the second mounting seat.

[0011] Furthermore, the fixed clutch mechanism includes a first threaded rod meshingly connected to the output shaft of the first motor and a second threaded rod threadedly connected to the first threaded rod, and the second threaded rod is provided with a third rack that can mesh with the first rack at one end away from the end connected to the first threaded rod.

[0012] Furthermore, the second motor is arranged on the second mounting platform with its output shaft facing downward, and the second motor is provided with a roller on the end face of the output shaft, and the second motor is slidingly connected to the second mounting platform through the roller; the third motor is installed on the second electrical mounting platform with its output shaft facing the second motor, and a third threaded rod is provided on the side opposite to the second motor, the output shaft of the third motor is threadedly connected to the third threaded rod, and the third motor drives the second motor to slide on the second mounting platform by rotation; the pressing mechanism is arranged on the third mounting platform below the second mounting platform, and a long strip through hole is provided on the second mounting platform, and the output shaft of the second motor is movably connected to the pressing mechanism through the long strip through hole.

[0013] Furthermore, the pressing mechanism includes a pressing plate, a screw arranged above the pressing plate, and a rotation controller fixedly connected to the pressing plate. The lower part of the pressing plate is installed on the third mounting platform through a second spring. One end of the screw is fixedly connected to the pressing plate, and the other end is fixedly connected to the lower surface of the second mounting platform through a third spring. A fourth threaded rod is provided on the output shaft of the second motor, and the screw can be threadedly connected to or separated from the fourth threaded rod by sliding the second motor in the horizontal direction. The rotation controller includes a control part and a rotating part. The control part is fixedly connected to the pressing plate through a connecting rod, and the rotating part is provided with a fourth rack that can engage with the first rack.

[0014] Furthermore, a second spring is provided on the side of the second motor opposite to the side wall of the installation box, and the second spring is fixedly connected to the side wall of the installation box.

[0015] Furthermore, a fourth mounting platform is provided in the mounting box, and a stabilizing device is provided on the fourth mounting platform. The stabilizing device includes a fourth motor, and the output shaft of the fourth motor is connected to a fifth threaded rod by meshing, and the fifth threaded rod is threadedly connected to a sixth threaded rod, and the end of the sixth threaded rod is provided with an arc plate that cooperates with the pile leg.

[0016] Furthermore, a fifth installation platform is provided in the installation box, a second hoist is provided on the fifth installation platform, and the second hoist is slidably connected to a pulley provided at the top of the pile leg.

[0017] A method for raising and lowering pile legs of a wind turbine installation vessel is implemented based on the above-mentioned wind turbine installation vessel pile leg raising and lowering device, including a pile leg raising process and a pile leg lowering process. The pile leg lowering process includes the following steps:

[0018] Step 1: Release the fixation between the pile legs and the installation box:

[0019] Starting the first motor to drive the fixed clutch mechanism to separate the third rack from the first rack until the third rack is in a first limit position;

[0020] Step 2: Control the pile legs to descend:

[0021] Step 2.1: Power is supplied to the first electromagnet and the second electromagnet respectively, so that the first electromagnet and the second electromagnet generate magnetic force. The first electromagnet and the second electromagnet are attracted to each other by the generated magnetic force, so that the first electromagnet and the second electromagnet form a closed loop, so that the second rack is meshed with the first rack on the pile leg;

[0022] Step 2.2, start the first winch, and the first winch controls the lowering of the pile legs by releasing the steel cable until the pile legs are lowered to the target position;

[0023] Step 3: Press down the pile legs:

[0024] Step 3.1, start the third motor to drive the second motor to slide on the second mounting platform until the power output shaft of the second motor is successfully assembled with the power input end of the pressing mechanism;

[0025] Step 3.2, start the rotation controller on the pressing mechanism to drive the fourth rack to rotate until the fourth rack is engaged with the first rack;

[0026] Step 3.3, start the second motor to drive the pressing mechanism downward to press down the pile leg until the pressing mechanism reaches the limit position;

[0027] Step 3.4, reversely start the rotation controller on the pressing mechanism to drive the fourth rack to rotate in the opposite direction, causing the fourth rack to separate from the first rack until the fourth rack returns to its initial position;

[0028] Step 3.5: Start the third motor to push the second motor, so that the fourth threaded rod on the second motor is separated from the screw rod. At this time, the pressure plate returns to its initial position under the elastic force of the second spring and the third spring;

[0029] Repeat steps 3.1-3.5 until the pile legs reach the specified depth;

[0030] Step 4: Fix the pile legs and the installation box:

[0031] The first motor is started in reverse to drive the fixed clutch mechanism, causing the third rack to engage with the first rack until the third rack is in the second limit position, thereby fixing the pile leg and the installation box.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] 1. In the present invention, the pile legs are installed so that they extend through the installation box. The overall raising or lowering of the pile legs is achieved by utilizing the weight of the pile leg structure, a retracting member installed within the installation box, and an adjustment device for the second hoist. Furthermore, during the descent of the pile legs, the release speed of the second hoist is varied to rapidly increase the descent speed in conjunction with the weight of the pile legs. During the ascent of the pile legs, the leg is raised by varying the winding and retraction of the steel cable by the second hoist. The speed of the hoisting process is also controlled by controlling the retraction speed of the hoist. This method allows for rapid adjustment of the raising and lowering of the pile legs.

[0034] 2. In the present invention, small sections of racks are provided on the first mounting platform, the third mounting platform and the fourth mounting platform installed inside the mounting box for fixing the pile legs in the left and right directions. The direct contact between the racks and the racks of the pile legs replaces the contact between the gears and the racks of the pile legs of the traditional lifting device. In this way, it is possible to avoid the gears and the racks of the pile legs from getting stuck during the rotation of the racks, thereby affecting the work efficiency.

[0035] 3. In this invention, arc-shaped electromagnets are installed on the third mounting platform, directly connected to the leg, with one on each side to limit the leg's forward and backward position during the lifting phase. Arc-shaped electromagnets are also installed on the first mounting platform, directly connected to the leg, with one on each side to limit the leg's left and right position during the lifting phase. This approach allows for precise control and adjustment of the leg's lifting process.

[0036] 4. In the present invention, all mounting platforms are located entirely within the mounting box, limiting the area exposed to the outside world. This reduces contact between the rack and the leg rack, preventing external impurities from affecting the efficiency of the lifting mechanism. Furthermore, the pressing device on the second mounting platform is connected to the pressure plate via a spring, and the outer side of the second motor on the second mounting platform is connected to the mounting box housing via a spring device. This provides protection during the leg lifting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] FIG1 is a schematic diagram of the overall structure of an embodiment of the present invention;

[0038] FIG2 is a schematic structural diagram of an adjusting device according to an embodiment of the present invention;

[0039] FIG3 is a schematic diagram of the first electromagnet and the second electromagnet adsorbing each other according to an embodiment of the present invention;

[0040] FIG4 is a schematic diagram of the separation of the first electromagnet and the second electromagnet according to an embodiment of the present invention;

[0041] FIG5 is a schematic structural diagram of a pressing device according to an embodiment of the present invention;

[0042] 6 is a schematic structural diagram of a pressing device connected to a pile leg according to an embodiment of the present invention;

[0043] 7 is a schematic diagram of the screw of the pressing device according to an embodiment of the present invention being connected to the fourth screw on the second motor;

[0044] 8 is a schematic diagram of the screw of the pressing device according to an embodiment of the present invention being separated from the fourth screw on the second motor;

[0045] 9 is a schematic diagram of a second motor mounted on a second mounting plate according to an embodiment of the present invention;

[0046] 10 is a schematic diagram of a fixing device connected to a pile leg according to an embodiment of the present invention;

[0047] 11 is a schematic diagram of the embodiment of the present invention, the fixing device is separated from the pile legs;

[0048] FIG12 is a schematic diagram of a stabilizing device according to an embodiment of the present invention;

[0049] In the figure: 1, pile leg, 10, first rack, 11, pulley,

[0050] 2. Installation box, 20. Through hole, 21. First installation platform, 22. Second installation platform, 220. Long strip through hole, 23. Third installation platform, 24. Fourth installation platform, 25. Fifth installation platform,

[0051] 3. Fixing device, 30. First motor, 31. First threaded rod, 32. Second threaded rod, 33. Third rack,

[0052] 4. Pressing device, 40. Second moving motor, 400. Roller, 401. Third threaded rod, 402. Fourth threaded rod, 403. Fourth spring, 41. Third moving motor, 42. Pressing mechanism, 420. Pressing plate, 421. Screw, 422. Rotation controller, 4220. Control unit, 4221. Rotating unit, 423. Second spring, 424. Third spring, 425. Connecting rod, 426. Fourth rack,

[0053] 5. Adjustment device, 50. Retraction member, 500. First electromagnet, 5000. First mounting seat, 5010. Second mounting seat, 501. Second electromagnet, 502. Second rack, 503. First generator, 504. Second generator, 51. First winch,

[0054] 6. The first spring,

[0055] 7. Stabilizing device, 70. Fourth motor, 71. Fifth threaded rod, 72. Sixth threaded rod, 73. Arc plate,

[0056] 8. Second winch. DETAILED DESCRIPTION

[0057] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0058] Example 1

[0059] 1 , the present invention provides a rapid lifting device for a wind turbine installation vessel, comprising a pile leg 1 and an installation box 2. The installation box 2 is installed inside the hull and is an integrated structure with the hull. The top and bottom of the installation box 2 are provided with corresponding through holes 20. The pile leg 1 is placed in the through hole 20 of the installation box 2 and passes through the installation box 2. The installation box 2 is provided with a first installation platform 21, a second installation platform 22 and a third installation platform 23 vertically distributed. The first installation platform 21 is provided with a fixing device 3 for keeping the pile leg 1 stationary. The fixing device 3 is used to fix the pile leg 1 and keep it stationary with the wind turbine installation vessel when the wind turbine installation vessel uses the pile leg 1 for operation or navigation. The second installation platform 22 and the third installation platform 23 are provided with fixing devices 3 for keeping the pile leg 1 stationary. There is a pressing device 4 for controlling the downward movement of the pile leg 1, and the pressing device 4 is used to apply pressure to the pile leg 1 so that it is inserted into the soil on the seabed; an adjusting device 5 is provided at the bottom of the installation box 2 to control the lifting and lowering of the pile leg 1, and the adjusting device 5 includes a contraction member 50 that can be connected to or detached from the pile leg 1 and a first winch 51 connected to the contraction member 50. The adjusting device 5 achieves the purpose of controlling the descent and ascent of the pile leg 1 by connecting the contraction member 50 to the pile leg 1 and then contracting the steel cable of the first winch 51; in order to facilitate the connection of the fixing device 3, the adjusting device 5 and the pressing device 4 with the pile leg 1 and control the pile leg 1, two first racks 10 symmetrical about the axis are provided in the axial direction of the side wall of the pile leg 1.

[0060] 2-3 , the contraction member 50 includes two arc-shaped plates, a first electromagnet 500 and a second electromagnet 501. The first electromagnet 500 and the second electromagnet 501 surround the pile leg 1 in a ring shape. A second rack 502 is provided in the middle part of the opposite side of the first electromagnet 500 and the second electromagnet 501. The second rack 502 corresponds to the first rack 10 on the pile leg 1. A first generator 503 and a second generator 504 are respectively provided on the first electromagnet 500 and the second electromagnet 501 on the side away from the second rack 502. The first generator 503 and the second generator 504 are respectively fixedly connected to the first electromagnet 500 and the second electromagnet 501, and the first generator 503 and the second generator 504 are respectively connected to the steel cable of the first winch 51. The contraction member 50 surrounds the pile leg 1 through the pulling and suspension action of the first winch 51. The first generator 503 and the second generator 504 can respectively energize the first electromagnet 500 and the second electromagnet 501, so that the first electromagnet 500 and the second electromagnet 501 generate magnetic force. When the first electromagnet 500 and the second electromagnet 501 generate magnetic force and attract each other, the first electromagnet 500 and the second electromagnet 501 form a closed circular loop, and the second racks 502 on the first electromagnet 500 and the second electromagnet 501 respectively engage with the first racks 10 on both sides of the pile leg 1, thereby connecting the retracting member 50 and the pile leg 1 to form an integral structure. Finally, by retracting the steel cable of the first hoist 51 and pulling the first generator 501 and the second generator 502, the pile leg 1 can be controlled to rise and fall.

[0061] A first mounting seat 5000 and a second mounting seat 5010 are respectively provided at the edges of the first electromagnet 500 and the second electromagnet 501. A first spring 6 is provided between the first mounting seat 5000 and the second mounting seat 5010. One end of the first spring 6 is fixedly connected to the first mounting seat 5000, and the other end is fixedly connected to the second mounting seat 5010. The first electromagnet 500 and the second electromagnet 501 are connected together by the first spring 6 and can always surround the pile leg 1 so that the contraction member 50 can be quickly connected to the pile leg 1. At the same time, the first spring 6 can also separate the first electromagnet 500 and the second electromagnet 501 by the elastic force of the first spring 6 when the first electromagnet 500 and the second electromagnet 501 lose their magnetic force, thereby separating the second rack 502 from the pile leg 1.

[0062] As shown in Figures 10-11, the fixing device 3 has two, and is respectively located on both sides of the pile leg 1 where the first rack 10 is provided; the fixing device 3 includes a first motor 30, a first threaded rod 31 meshingly connected to the output shaft of the first motor 30, and a second threaded rod 32 threadedly connected to the first threaded rod 31, wherein the first motor 30 is fixed on the first mounting platform 21, and the first threaded rod 31 and the second threaded rod 32 can be installed on the first mounting platform 21 through a support rod provided with a bearing; the second threaded rod 32 is provided with a third rack 33 that can mesh with the first rack 10 at an end away from the end connected to the first threaded rod 31, and the third rack 33 and the first rack 10 are in the same plane. The first motor 30 can control the second threaded rod 32 to move horizontally toward the pile leg 10 by rotating until the third rack 33 meshes with the first rack 10 on the pile leg 1. When the wind turbine installation vessel is sailing or operating with the pile legs, the third rack 33 can be controlled to engage with the first rack 10 from both sides of the pile leg 1 by controlling the rotation of the first motor 30, so as to achieve the purpose of controlling the pile leg 1 to remain stationary.

[0063] 5-9, there are two pressing devices 4, which are respectively located on both sides of the pile leg 1 with the first rack 10; the pressing device 4 includes a second motor 40, a third motor 41 and a pressing mechanism 42, the second motor 40 is arranged on the second mounting platform 22 with the output shaft facing downward, the second motor 40 is provided with a roller 400 on the end face of the output shaft, and the second motor 40 is slidably connected to the second mounting platform 22 through the roller 400; the third motor 41 is installed on the second mounting platform with the output shaft facing the second motor 40. On the platform 22, a third threaded rod 401 is provided on the side opposite the second motor 40 and the third motor 41. The output shaft of the third motor 41 is threadedly connected to the third threaded rod 401. Rotation of the third motor 41 drives the second motor 40 to slide on the second mounting platform 22. A pressing mechanism 42 is provided on the third mounting platform 23 below the second mounting platform 22. The second mounting platform 22 is provided with an elongated through-hole 220, through which the output shaft of the second motor 22 is assembled and connected to the pressing mechanism 42. The pressing mechanism 42 can also be assembled and connected to the leg 1. The second motor 40 controls the up and down movement of the pressing mechanism 42, while the third motor 41 controls the connection and disconnection of the second motor 40 from the pressing mechanism 42. The width of the elongated through-hole 220 matches the diameter of the output shaft of the second motor 40. The elongated through-hole 220 not only connects the second motor 40 with the pressing mechanism 42 but also serves as a path for the second motor 40 to move along the second mounting platform 22.

[0064] The pressing mechanism 42 includes a pressing plate 420, a screw 421 arranged above the pressing plate 420, and a rotation controller 422 fixedly connected to the pressing plate 420. The lower part of the pressing plate 420 is mounted on the third mounting platform 23 through a second spring 423. One end of the screw 421 is fixedly connected to the pressing plate 420, and the other end is fixedly connected to the lower surface of the second mounting platform 22 through a third spring 424. A fourth threaded rod 402 is provided on the output shaft of the second motor 40. The screw 421 can be threadedly connected to or separated from the fourth threaded rod 402 by sliding the second motor 40 in the horizontal direction. When the screw 421 is connected to the fourth threaded rod 402 on the second motor 40, When the four threaded rods 402 are threadedly connected, the second motor 40 can control the screw 421 to move downward by rotating, and squeeze the pressure plate 420 to move downward at the same time; the rotation controller 422 includes a control part 4220 and a rotating part 4221, the control part 4220 is fixedly connected to the pressure plate 420 through a connecting rod 425, and can move up and down with the pressure plate 420, the rotating part 4221 is rotatably connected to the control part 4220, and the control part 4220 can control the rotating part 4221 to rotate in a circular manner in the horizontal direction; the rotating part 4221 is provided with a fourth rack 426 that can mesh with the first rack 10, and the fourth rack 426 is initially In the initial state, it is located below the third mounting platform 23. When it is necessary to press down the pile leg 1, the control unit 4220 controls the fourth rack 426 of the rotating unit 4221 to rotate 90 degrees toward the pile leg 1 in the horizontal direction, and then meshes with the first rack 10. Then, the second motor 40 is controlled to rotate so that the screw 421 threadedly connected to the fourth threaded rod 402 moves downward, and drives the pressing plate 420 to move downward. The fourth rack 426 will also move downward synchronously during the downward movement of the pressing plate 420, thereby achieving the downward pressure on the pile leg 1. When the pressing plate 420 moves downward to the limit distance, the control unit 4220 controls the rotating unit 4221 to rotate 90 degrees toward the pile leg 1, and then meshes with the first rack 10. Then, the second motor 40 is controlled to rotate so that the screw 421 threadedly connected to the fourth threaded rod 402 moves downward, and drives the pressing plate 420 to move downward. The rotating part 4221 rotates in the opposite direction to return the fourth rack 426 to the initial position. Then, the third motor 41 is started to push the second motor 40 to separate the fourth threaded rod 402 on the second motor 40 from the screw 421. At this time, the pressing plate 420 returns to the initial position under the elastic force of the second spring 423 and the third spring 424. Then the third motor 41 is controlled to rotate in the opposite direction to return the second motor 40 to the initial position, and the fourth threaded rod 402 is threadedly connected to the screw 421 again. Finally, the second motor 40 is started again to continue the next round of pressing operation until the pile leg 1 reaches the specified depth.

[0065] In order to ensure that the second motor 40 remains stable when sliding on the second mounting platform 21, a fourth spring 403 is provided on the side of the second motor 40 opposite to the side wall of the mounting box 2. The fourth spring 403 is fixedly connected to the side wall of the mounting box 2. There are six fourth springs 403 distributed in an array.

[0066] As shown in FIG12 , a fourth mounting platform 24 is further provided in the mounting box 2. A stabilizing device 7 is provided on the fourth mounting platform 24. The stabilizing device 7 includes a fourth motor 70, which is fixed to the fourth mounting platform 24. The output shaft of the fourth motor is connected to a fifth threaded rod 71 by meshing, and the fifth threaded rod 71 is threadedly connected to a sixth threaded rod 72. The end of the sixth threaded rod 72 is provided with an arc plate 73 that cooperates with the pile leg 1. The sixth threaded rod 72 can move along its axial direction through the transmission effect of the fifth threaded rod 71. When the pile leg 1 moves up and down, the fourth motor 70 can be controlled to rotate so that the sixth threaded rod 72 slowly moves toward the pile leg 1 until the arc plate 73 is completely in contact with the side wall of the pile leg 1, thereby achieving the purpose of maintaining stability during the lifting and lowering process of the pile leg 1.

[0067] As shown in Figure 1, a fifth installation platform 25 is also provided in the installation box 2. A second winch 8 is provided on the fifth installation platform 25. The second winch 8 is slidably connected to the pulley 1 provided at the top of the pile leg 1. When the connection is made, the steel cable of the second winch 8 is passed through the pulley 11, and then the end of the steel cable is fixed to the fifth installation platform 25. After the pile leg 1 of the wind turbine installation vessel is fixed to the seabed, when the wind turbine installation vessel needs to be lifted upward and out of the sea surface, the third rack 33 of the fixing device 3 is first separated from the first rack 10 on the pile leg 1, and then the steel cable of the second winch 8 is retracted. The wind turbine installation vessel will slowly rise under the pulling force of the second winch 8 until it reaches the specified height. Finally, the fixing device 3 is controlled to make the third rack 33 mesh with the first rack 1.

[0068] Example 2

[0069] This embodiment provides a method for raising and lowering pile legs of a wind turbine installation vessel, which is implemented based on the wind turbine installation vessel pile leg raising and lowering device described in Example 1. The method includes a pile leg raising process and a pile leg lowering process, wherein:

[0070] The leg lowering process includes the following steps:

[0071] Step 1: Release the fixation between the pile legs and the installation box:

[0072] The first motor 30 is started to drive the fixed clutch mechanism, causing the third rack 33 to separate from the first rack 10 until the third rack 33 is in the first limit position;

[0073] Step 2: Control the pile legs to descend:

[0074] Step 2.1: Power is supplied to the first electromagnet 500 and the second electromagnet 501 respectively, so that the first electromagnet 500 and the second electromagnet 501 generate magnetic force. The first electromagnet 500 and the second electromagnet 501 attract each other due to the generated magnetic force, so that the first electromagnet 500 and the second electromagnet 501 form a closed loop, so that the second rack 502 is meshed with the first rack 10 on the leg 1.

[0075] Step 2.2, starting the first hoist 51, and the first hoist 51 controls the pile leg 1 to descend by releasing the steel cable until the pile leg 1 descends to the target position;

[0076] Step 3: Press down the pile legs:

[0077] Step 3.1, start the third motor 41 to drive the second motor 40 to slide on the second mounting platform 22 until the power output shaft of the second motor 40 is successfully assembled with the power input end of the pressing mechanism 42;

[0078] Step 3.2: Start the rotation controller 422 on the pressing mechanism 42 to drive the fourth rack 426 to rotate until the fourth rack 426 is engaged with the first rack 10;

[0079] Step 3.3, start the second motor 40 to drive the pressing mechanism 42 downward to press the pile leg until the pressing mechanism reaches the limit position;

[0080] Step 3.4: Reversely activate the rotation controller 422 on the pressing mechanism 42 to drive the fourth rack 426 to rotate in the opposite direction, causing the fourth rack 426 to separate from the first rack 10 until the fourth rack 426 returns to the initial position;

[0081] Step 3.5: Start the third motor 41 to push the second motor 40, separating the fourth threaded rod 402 from the screw rod 421 on the second motor 40. At this time, the pressure plate 420 returns to its initial position under the elastic force of the second spring 423 and the third spring 424.

[0082] Repeat steps 3.1-3.5 until leg 1 reaches the specified depth;

[0083] Step 4: Fix the pile legs and the installation box:

[0084] The first motor 30 is started in reverse to drive the fixed clutch mechanism, causing the third rack 33 to engage with the first rack 10 until the third rack 33 is in the second limit position, thereby fixing the pile leg and the installation box.

[0085] During the pile leg lifting process, it is also necessary to first release the fixation between the pile leg and the installation box, then lift the pile leg to the target position through the adjustment device, and finally fix the pile leg to the installation box.

[0086] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is apparent to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.

Claims

1. A leg lifting device for a wind power installation vessel, characterized in that: It includes a leg (1) and an installation box (2). Through holes (20) corresponding to each other are provided at the top and bottom of the installation box (2), and the leg (1) is placed in the through hole (20) of the installation box (2) and penetrates through the installation box (2). At the same time, two first racks (10) symmetrical about the axis are arranged axially on the side wall of the leg (1). A first installation platform (21), a second installation platform (22) and a third installation platform (23) are vertically arranged in the installation box (2). A fixing device (3) for keeping the leg stationary is arranged on the first installation platform (21). There are two fixing devices (3), which are respectively located on both sides of the leg (1) provided with the first rack (10). Each fixing device (3) includes a first motor (30), a third rack (33) and a fixed clutch mechanism. The power output end of the first motor (30) is connected to the third rack (33) through the fixed clutch mechanism. Under the power output of the first motor (30), the fixed clutch mechanism drives the third rack (33) to move towards / away from the first rack (10), so that the third rack (33) reciprocates between the first and second limit positions. When the third rack (33) is in the first limit position, the third rack (33) is in a separated state from the first rack (10). When the third rack (33) is in the second limit position, the third rack (33) engages with the first rack (10). A downward pressing device (4) for controlling the leg (1) to move downward is arranged on the second installation platform (22) and the third installation platform (23). There are two downward pressing devices (4), which are respectively located on both sides of the leg (1) provided with the first rack (10). The downward pressing device (4) includes a second motor (40), a third motor (41) and a downward pressing mechanism (42). The downward pressing mechanism (42) includes a downward pressing transmission mechanism and a fourth rack (426). The power output end of the third motor (41) is connected to the second motor (40), and the power output end of the second motor (40) is connected to the fourth rack (426) through the downward pressing transmission mechanism. Under the power action of the third motor (41), the power output end of the second motor (40) is connected to / separated from the downward pressing transmission mechanism. Under the power action of the second motor (40), the downward pressing transmission mechanism first drives the fourth rack (426) to engage with the first rack (10), and then presses the leg (1) until the target position is reached. An adjusting device (5) for controlling the lifting of the leg (1) is arranged at the bottom of the installation box (2). The adjusting device (5) includes a contraction member (50) capable of connecting to or disconnecting from the leg (1) and a first hoist (51) connected to the contraction member (50). The contraction member (50) includes a contraction control mechanism and a second rack (502). The second rack (502) can engage with or disengage from the first rack (10) under the action of the contraction control mechanism. When the second rack (502) engages with the first rack (10), under the power action of the first hoist (51), the lifting of the leg (1) is controlled.

2. The leg lifting device of the wind power installation vessel according to claim 1, characterized in that: The retraction control mechanism comprises two arc-shaped plates, a first electromagnet (500) and a second electromagnet (501); the first electromagnet (500) and the second electromagnet (501) surround the pile leg (1) in a ring shape; a second rack (502) is arranged in the middle of the first electromagnet (500) and the second electromagnet (501) on the opposite side; the second rack (502) corresponds to the first rack (10) on the pile leg (1); a first generator (503) and a second generator (504) are respectively arranged on the first electromagnet (500) and the second electromagnet (501) on the opposite side from the second rack (502); the first generator (503) and the second generator (504) are respectively connected to the first hoist (51).

3. The leg lifting device of the wind power installation vessel according to claim 2, wherein: A first mounting seat (5000) and a second mounting seat (5010) are respectively arranged at the edges of the first electromagnet (500) and the second electromagnet (501); a first spring (6) is arranged between the first mounting seat (5000) and the second mounting seat (5010); one end of the first spring (6) is fixedly connected to the first mounting seat (5000), and the other end is fixedly connected to the second mounting seat (5010).

4. The leg lifting device of the wind power installation vessel according to claim 3, wherein: The fixed clutch mechanism comprises a first threaded rod (31) meshingly connected to the output shaft of a first motor (30) and a second threaded rod (32) threadedly connected to the first threaded rod (31); the second threaded rod (32) is provided with a third rack (33) capable of meshing with the first rack (10) at one end away from the end connected to the first threaded rod (31).

5. The leg lifting device of the wind power installation vessel according to claim 4, characterized in that: The second motor (40) is arranged on the second mounting platform (22) with its output shaft facing downwards, and a roller (400) is provided on the end surface of the output shaft of the second motor (40), and the second motor (40) is slidably connected to the second mounting platform (22) via the roller (400); the third motor (41) is installed on the second mounting platform (22) with its output shaft facing the second motor (40), and a third threaded rod (400) is provided on the side opposite to the third motor (41) 1), the output shaft of the third motor (41) is threadedly connected to the third threaded rod (401), and the third motor (41) drives the second motor (40) to slide on the second mounting platform (22) by rotating; the pressing mechanism (42) is arranged on the third mounting platform (23) below the second mounting platform (22), and the second mounting platform (22) is provided with a long strip through hole (220), and the output shaft of the second motor (40) is assembled and connected with the pressing mechanism (42) through the long strip through hole (220).

6. The leg lifting device of the wind power installation vessel according to claim 5, characterized in that: The downward pressure transmission mechanism comprises a pressure plate (420), a screw rod (421) arranged above the pressure plate (420), and a rotation controller (422) fixedly connected to the pressure plate (420); the pressure plate (420) is mounted on the third mounting platform (23) via a second spring (423) at its lower side; one end of the screw rod (421) is fixedly connected to the pressure plate (420), and the other end is fixedly connected to the lower surface of the second mounting platform (22) via a third spring (424); the output of the second motor (40) A fourth threaded rod (402) is provided on the output shaft, and the screw rod (421) can be threadedly connected to or separated from the fourth threaded rod (402) by sliding the second motor (40) in the horizontal direction; the rotation controller (422) includes a control part (4220) and a rotating part (4221), the control part (4220) is fixedly connected to the pressure plate (420) through a connecting rod (425), and the rotating part (4221) is provided with a fourth rack (426) that can mesh with the first rack (10).

7. The leg lifting device of the wind power installation vessel according to claim 6, wherein: A fourth spring (403) is also provided on the side of the second motor (40) opposite to the side wall of the installation box (2), and the fourth spring (403) is fixedly connected to the side wall of the installation box (2).

8. The leg lifting device of the wind power installation vessel according to claim 7, wherein: A fourth mounting platform (24) is also provided in the mounting box (2), and a stabilizing device (7) is provided on the fourth mounting platform (24). The stabilizing device (7) comprises a fourth motor (70), and the output shaft of the fourth motor (70) is connected to a fifth threaded rod (71) by meshing, and the fifth threaded rod (71) is threadedly connected to a sixth threaded rod (72), and an arc plate (73) matching the pile leg (1) is provided at the end of the sixth threaded rod (72).

9. The leg lifting device of the wind power installation vessel according to claim 8, characterized in that: A fifth installation platform (25) is also provided in the installation box (2), and a second hoist (8) is provided on the fifth installation platform (25). The second hoist (8) is slidably connected to a pulley (11) provided at the top end of the pile leg (1).

10. A method for lifting and lowering the leg of a wind power installation vessel, which is implemented based on the leg lifting and lowering device of the wind power installation vessel described in claim 9, characterized in that, It includes the pile leg lifting process and the pile leg lowering process, in which: The leg lowering process includes the following steps: Step 1: Release the fixation between the pile legs and the installation box: Starting the first motor (30) to drive the fixed clutch mechanism to separate the third rack (33) from the first rack (10) until the third rack (33) is in a first limit position; Step 2: Control the pile legs to descend: Step 2.1, respectively energize the first electromagnet (500) and the second electromagnet (501), so that the first electromagnet (500) and the second electromagnet (501) generate magnetic force; and the first electromagnet (500) and the second electromagnet (501) attract each other through the generated magnetic force, so that the first electromagnet (500) and the second electromagnet (501) form a closed circular ring, so that the second rack (502) is meshed and connected with the first rack (10) on the pile leg (1); Step 2.2: Start the first hoist (51). The first hoist (51) controls the descent of the pile leg (1) by releasing the steel cable until the pile leg (1) descends to the target position. Step Three: Press down the pile leg: Step 3.1: Start the third motor (41) to drive the second motor (40) to slide on the second installation platform (22) until the power output shaft of the second motor (40) is successfully assembled with the power input end of the pressing mechanism (42). Step 3.2: Start the rotation controller (422) on the pressing mechanism (42) to drive the fourth rack (426) to rotate until the fourth rack (426) meshes with the first rack (10). Step 3.3: Start the second motor (40) to press down the pile leg by driving the pressing mechanism (42) downward until the pressing mechanism descends to the limit position. Step 3.4: Reverse-start the rotation controller (422) on the pressing mechanism (42) to drive the fourth rack (426) to rotate in the reverse direction, causing the fourth rack (426) to disengage from the first rack (10) until the fourth rack (426) returns to the initial position. Step 3.5: Start the third motor (41) to push the second motor (40) so that the fourth threaded rod (402) on the second motor (40) disengages from the screw rod (421). At this time, the pressure plate (420) returns to the initial position under the elastic force of the second spring (423) and the third spring (424). Repeat steps 3.1 - 3.5 until the pile leg (1) reaches the specified depth. Step Four: Fix the pile leg to the installation box: Reverse-start the first motor (30) to drive the fixed clutch mechanism, causing the third rack (33) to mesh with the first rack (10) until the third rack (33) is in the second limit position, thus fixing the pile leg to the installation box.

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