A kind of for offshore wind turbine operation and maintenance of boarding device

Abstract

This application discloses a docking device for offshore wind turbine operation and maintenance, relating to the technical field of offshore wind power, including a climbing component, a docking component, and a positioning component. The climbing component includes a base, a first drive component, a climbing ladder, and a second drive component. The docking component includes an elastic cushion. The positioning component includes a telescopic frame and two positioning carriers. Each positioning carrier includes a vehicle body, four wheels, multiple electromagnets, a positioning belt, and a winding component. One end of the positioning belt is connected to the winding component, and the other end is connected to the vehicle body. The vehicle body is attracted to the surface of the offshore wind turbine by the electromagnets and travels on the surface of the offshore wind turbine by rotating its wheels. The two vehicle bodies are locked together by the electromagnets. This application can effectively improve the positional stability of the offshore maintenance vessel relative to the offshore wind turbine when personnel dock, thereby effectively reducing the safety risks of docking.

Description

Technical Field

[0001] This application relates to the technical field of offshore wind power, and in particular to a docking device for the operation and maintenance of offshore wind turbines. Background Technology

[0002] Offshore wind power refers to a method of generating electricity by constructing wind farms at sea. It is characterized by abundant resources, high utilization hours, no land occupation, and suitability for large-scale development, and represents the latest frontier in global wind power development.

[0003] Offshore wind turbines are one of the most common applications of offshore wind power. Since they are usually set up in areas with strong winds at sea, their stable operation requires regular maintenance and timely repair when they malfunction. This requires offshore maintenance vessels to dock, so their accessibility is very important.

[0004] Currently, offshore maintenance vessels typically berth around offshore wind turbines using either top-to-bottom or side-to-side methods. Since there are usually no mooring posts around the turbines for the vessels to anchor, they are significantly affected by tidal currents, making these methods only suitable for calm seas. In rough seas, the vessels are prone to swaying in multiple directions, requiring highly skilled operators and posing a significant safety risk of injury such as being trapped or falling. Summary of the Invention

[0005] This application provides a docking device for offshore wind turbine operation and maintenance, which can effectively improve the positional stability of the offshore maintenance vessel relative to the offshore wind turbine when personnel dock, thereby effectively reducing the safety risks of docking.

[0006] This application provides a docking device for the operation and maintenance of offshore wind turbines, adopting the following technical solution: A docking device for offshore wind turbine operation and maintenance is installed on an offshore maintenance vessel and includes a climbing component, a docking component, and a positioning component. The climbing assembly includes a base, a first drive unit, a climbing ladder, and a second drive unit; the base is rotatably connected to the offshore maintenance vessel, its rotation axis is vertical, and the first drive unit is used to drive the base to rotate; one end of the climbing ladder is rotatably connected to the base and the other end is used to contact the offshore wind turbine, its rotation axis is horizontal, and the second drive unit is used to drive the climbing ladder to rotate. The docking assembly includes an elastic cushion; the cushion is disposed on the outside of the offshore maintenance vessel, and its outside has an arc-shaped surface adapted to the offshore wind turbine. The positioning assembly includes a telescopic frame and two positioning carriers; one end of the telescopic frame is fixedly connected to the base, and its telescopic direction is aligned vertically with the extension direction of the climbing ladder relative to the base, and the two positioning carriers are respectively disposed on both sides of the other end of the telescopic frame. The positioning vehicle includes a vehicle body, four wheels, multiple electromagnets, a positioning belt, and a winding component; the winding component is rotatably connected to the telescopic frame, and its rotation axis is perpendicular to the extension direction of the telescopic frame; one end of the positioning belt is connected to the winding component and can be wound onto the winding component, and the other end is connected to the vehicle body; the wheels are rotatably connected to the vehicle body, and the electromagnets are disposed on the vehicle body; the vehicle body is attracted to the surface of the offshore wind turbine by the electromagnets and travels on the surface of the offshore wind turbine by rotating the wheels, and two vehicle bodies are locked together by the electromagnets.

[0007] By adopting the above technical solution, after the offshore maintenance vessel approaches the offshore wind turbine, the telescopic frame is first controlled to approach the offshore wind turbine, and then the positioning vehicle is controlled to move so that the two vehicle bodies attract and lock together, thus achieving the initial positioning between the offshore maintenance vessel and the offshore wind turbine. Then, by controlling the rotation of the two winding components, the offshore maintenance vessel can be driven to approach the offshore wind turbine, and the docking components are used to contact the offshore wind turbine to improve positional stability. Then, the climbing ladder is controlled to move to contact the offshore wind turbine, at which point the staff can climb the offshore wind turbine through the climbing ladder, effectively reducing the safety risks of docking.

[0008] Optionally, a ladder is provided on one side of the offshore wind turbine, and there is space below the ladder above the sea surface for the docking component to dock and the positioning component to position.

[0009] By adopting the above technical solutions, it is possible to facilitate the docking of offshore maintenance vessels on one side of the offshore wind turbine, and at the same time, it is possible for staff to climb up the offshore wind turbine to complete maintenance and repair.

[0010] Optionally, the berthing component is located on one side of the offshore maintenance vessel in the width direction.

[0011] By adopting the above technical solutions, it is possible to further facilitate the docking of offshore maintenance vessels on the side of offshore wind turbines, reduce the space occupied by the docking equipment, and at the same time reduce the probability of damage to the offshore maintenance vessels or offshore wind turbines due to frontal impact when docking on the side of offshore wind turbines.

[0012] Optionally, the docking assembly may also include a plurality of adjustable wheels; The adjusting wheel is rotatably connected to the offshore maintenance vessel, and its rotation axis is vertical; the adjusting wheel is located inside the cushion, and is exposed after the cushion is squeezed and deformed.

[0013] By adopting the above technical solution, it is possible for offshore maintenance vessels to adjust their position by using the cushion to contact and rub against the offshore wind turbine, and then move around the offshore wind turbine by means of wind and waves or self-propulsion. This makes it easier for staff to climb the offshore wind turbine via the climbing ladder and then continue climbing upwards via the ladder.

[0014] Optionally, the docking assembly further includes a plurality of third drive members, and the plurality of third drive members are used to drive the plurality of adjustment wheels to rotate.

[0015] By adopting the above technical solution, it is possible for offshore maintenance vessels to adjust their position by controlling the rotation of the adjustment wheel after the cushion comes into contact with the offshore wind turbine.

[0016] Optionally, the docking assembly may also include a plurality of rollers; The roller is rotatably connected to the offshore maintenance vessel, and its axis of rotation is horizontal; the roller is located inside the cushion, and is exposed after the cushion is squeezed and deformed.

[0017] By adopting the above technical solution, it is possible to facilitate the movement of offshore maintenance vessels relative to the offshore wind turbine after they are moored on one side of the offshore wind turbine, with the wind and waves, thereby reducing the wear and tear caused by friction between the mooring components (especially the mooring pads) and the offshore wind turbine.

[0018] Optionally, the end of the climbing ladder away from the base is used to contact and abut against the side of the offshore wind turbine closest to the ladder.

[0019] By adopting the above technical solution, it is possible to make it easier for staff to climb the ladder after ascending the offshore wind turbine, while also effectively improving the safety of staff climbing.

[0020] Optionally, a protective structure is provided around one side of the climbing ladder, which forms a climbing space on one side of the climbing ladder, and provides clearance openings on both sides of the end of the climbing ladder away from the base.

[0021] By adopting the above technical solutions, the safety of staff members working on climbing ladders can be further improved.

[0022] Optionally, the climbing ladder is provided with a door panel at the clearance opening for controlling the opening and closing of the clearance opening. The door panel is rotatably connected to the climbing ladder, and its rotation axis is perpendicular to the extension direction of the climbing ladder.

[0023] By adopting the above technical solutions, the safety of workers approaching the clearance opening in the climbing space can be improved, and workers can also easily control the opening and closing of the clearance opening as needed.

[0024] Optionally, a protective element extends from one side of the door panel; when the door panel is rotated to its limit position away from the climbing space, the door panel provides a step surface for the worker, and the protective element provides protection on the side of the door panel away from the clearance opening; when the door panel is rotated to its limit position towards the climbing space, the protective element is located in the climbing space.

[0025] By adopting the above technical solutions, the safety of staff entering and exiting the clearance area can be improved, thereby further enhancing the safety of staff climbing the ladder.

[0026] In summary, this application includes at least one of the following beneficial effects: 1. It can effectively improve the positional stability of offshore maintenance vessels relative to offshore wind turbines when staff board them, thereby effectively reducing the safety risks of boarding; 2. It allows the offshore maintenance vessel to dock stably on one side of the offshore wind turbine, and also allows the offshore maintenance vessel to adjust its position relative to the offshore wind turbine so that subsequent personnel can board it. 3. It allows staff to easily avoid the ladders of the offshore wind turbine before climbing onto the turbine and then continue climbing upwards, effectively improving the safety of staff climbing to the ladders. 4. It can effectively reduce the probability of damage to the docking equipment and offshore wind turbines during the docking process. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a docking device for offshore wind turbine operation and maintenance that is stored when not in use, according to an embodiment of this application. Figure 2 This is a schematic diagram of the structure of a docking device for offshore wind turbine operation and maintenance according to an embodiment of this application, which is about to be used to board an offshore wind turbine; Figure 3 This is a schematic diagram of the structure of a docking device for offshore wind turbine operation and maintenance in an embodiment of this application, which is about to be used to board an offshore wind turbine (the offshore wind turbine is hidden). Figure 4 This is a schematic diagram of the docking component in an embodiment of this application; Figure 5 This is a cross-sectional view of the positioning component in this application embodiment when it will achieve positioning based on an offshore wind turbine; Figure 6 This is a schematic diagram of the structure of a boarding device for offshore wind turbine operation and maintenance according to an embodiment of this application when boarding an offshore wind turbine; Figure 7 This is a cross-sectional view of the positioning component in this application embodiment after positioning is achieved based on an offshore wind turbine.

[0028] Explanation of reference numerals in the attached drawings: 1. Offshore maintenance vessel; 2. Offshore wind turbine; 21. Ladder; 3. Dock assembly; 31. Cushion; 32. Adjustable wheel; 33. Third drive unit; 34. Roller; 4. Climbing assembly; 41. Base; 42. First drive unit; 43. Climbing ladder; 431. Climbing space; 432. Clearance opening; 44. Second drive unit; 45. Enclosure structure; 46. Door panel; 461. Protective component; 5. Positioning assembly; 51. Telescopic frame; 52. Positioning carrier; 521. Vehicle body; 522. Wheel; 523. Electromagnet; 524. Positioning belt; 525. Rewinding component. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0030] Reference Figure 1 and Figure 2 This application discloses a docking device for offshore wind turbine operation and maintenance, installed on an offshore maintenance vessel 1, which allows personnel to easily climb onto the offshore wind turbine 2 after the vessel 1 docks on one side. In this embodiment, the bottom of the offshore wind turbine 2 is preferably a cylindrical structure with a vertical axis, and one side has a ladder 21 extending along its height. A space is left below the ladder 21 above the sea surface for the offshore maintenance vessel 1 to dock, and the top of the ladder 21 leads to the maintenance area on top of the offshore wind turbine 2. Since the offshore wind turbine 2 and the offshore maintenance vessel 1 are both existing technologies in the art, they will not be described in detail here, and the accompanying drawings only provide a brief representation.

[0031] Reference Figure 2 and Figure 3 The berthing device includes a berthing assembly 3 for the offshore maintenance vessel 1 to berth on one side of the offshore wind turbine 2, a climbing assembly 4 for the staff to board the offshore wind turbine 2, and a positioning assembly 5.

[0032] Reference Figure 2 and Figure 4 The docking assembly 3 is installed on one side of the offshore maintenance vessel 1 in the width direction. It includes a cushion 31 for direct contact between the offshore maintenance vessel 1 and the offshore wind turbine 2, multiple adjusting wheels 32 for facilitating the adjustment of the position of the offshore maintenance vessel 1 relative to the offshore wind turbine 2, several third drive components 33, and multiple rollers 34 for facilitating the movement of the offshore maintenance vessel 1 relative to the offshore wind turbine 2 due to the undulation of wind and waves.

[0033] The cushion 31 has a rectangular, plate-like structure and is elastic. Its length is parallel to the length of the offshore maintenance vessel 1, and its thickness is parallel to the width of the offshore maintenance vessel 1. The side of the cushion 31 facing away from the offshore maintenance vessel 1 has an arc-shaped surface that conforms to the surface of the offshore wind turbine 2, and its interior has a hollow structure, allowing the offshore maintenance vessel 1 to be compressed and deformed upon contact with the offshore wind turbine 2. In this embodiment, the cushion 31 is preferably made entirely of rubber material.

[0034] The adjusting wheel 32 has a cylindrical structure and is rotatably connected to the offshore maintenance vessel 1. Its rotation axis is parallel to the width direction of the cushion 31 and coincides with its own axis. The surface of the adjusting wheel 32 is rough. When the offshore maintenance vessel 1 does not contact the offshore wind turbine 2 through the cushion 31, multiple adjusting wheels 32 are located in the internal space formed by the hollow structure of the cushion 31, and multiple adjusting wheels 32 are evenly distributed inside the cushion 31. When the offshore maintenance vessel 1 contacts the offshore wind turbine 2 through the cushion 31, after the cushion 31 is squeezed and deformed, multiple adjusting wheels 32 will be exposed and contact the surface of the offshore wind turbine 2.

[0035] The third drive component 33 is fixedly installed inside the offshore maintenance vessel 1 near the multiple adjusting wheels 32, and is used to drive the multiple adjusting wheels 32 to rotate synchronously and in the same direction relative to the offshore maintenance vessel 1. In this embodiment, the docking assembly 3 preferably includes one third drive component 33, which drives the multiple adjusting wheels 32 to rotate simultaneously through a linkage structure; and preferably, the third drive component 33 is a servo motor; in this embodiment, since the servo motor and the linkage structure with the above functions are common existing technologies, they will not be described in detail here. The third drive component 33 is briefly shown in the drawings and the linkage structure is omitted.

[0036] The roller 34 has a cylindrical structure and is rotatably connected to the offshore maintenance vessel 1. Its rotation axis is parallel to the length direction of the cushion 31 and coincides with its own axis. The surface of the roller 34 is rough. When the offshore maintenance vessel 1 does not contact the offshore wind turbine 2 through the cushion 31, the multiple rollers 34 are located in the internal space formed by the hollow structure of the cushion 31. The multiple rollers 34 are evenly distributed inside the cushion 31 and are staggered with the multiple adjusting wheels 32. When the offshore maintenance vessel 1 contacts the offshore wind turbine 2 through the cushion 31, the cushion 31 is squeezed and deformed, and the multiple rollers 34 will be exposed and contact the surface of the offshore wind turbine 2.

[0037] Furthermore, preferably, the roller 34 can rotate relative to the offshore maintenance vessel 1 while also sliding relative to the offshore maintenance vessel 1. Its sliding direction is parallel to the thickness direction of the cushion 31. A compression spring is also installed between the roller 34 and the offshore maintenance vessel 1, which tends to drive the roller 34 to slide to its limit position away from the offshore maintenance vessel 1 and maintain it. At this time, the roller 34 is located inside the cushion 31 and can contact the surface of the offshore wind turbine 2 before the adjusting wheel 32 when the cushion 31 is compressed. When the roller 34 overcomes the force of the compression spring and slides to its limit position towards the offshore maintenance vessel 1, the roller 34 will no longer be able to contact the surface of the offshore wind turbine 2 when the cushion 31 is compressed.

[0038] Reference Figure 1 and Figure 2 The climbing component 4 includes a base 41, a first drive component 42, a climbing ladder 43, and a second drive component 44.

[0039] The base 41 is rotatably mounted on the top of the offshore maintenance vessel 1, with its rotation axis parallel to the height direction of the offshore maintenance vessel 1. The first drive unit 42 is fixedly mounted inside the offshore maintenance vessel 1, located below the base 41, and is used to drive the base 41 to rotate relative to the offshore maintenance vessel 1. In this embodiment, the first drive unit 42 is preferably a servo motor.

[0040] The climbing ladder 43 has a rectangular parallelepiped structure. One end of its length is rotatably connected to the base 41, and its rotation axis is perpendicular to the rotation axis of the base 41 and parallel to the width direction of the climbing ladder 43. The second drive component 44 is fixedly installed on the base 41 and is used to drive the climbing ladder 43 to rotate relative to the base 41. The other end of the climbing ladder 43 is used to contact and abut against the side of the offshore wind turbine 2 near the ladder 21, so that the staff can reach the vicinity of the ladder 21 via the climbing ladder 43 and continue to climb upward via the ladder 21. When the climbing ladder 43 rotates to its limit position in the direction closer to the offshore maintenance vessel 1, its length direction is horizontal, and the climbing ladder 43 is in a retractable position. When the climbing ladder 43 rotates to its limit position in the direction away from the offshore maintenance vessel 1, its length direction is vertical, and the climbing ladder 43 is in a position where it can rotate and contact and abut against the offshore wind turbine 2. In this embodiment, the second driving component 44 is preferably a servo motor, and the end of the climbing ladder 43 away from the base 41 preferably has a structure adapted to the offshore wind turbine 2, so that it can be snapped into the offshore wind turbine 2.

[0041] Furthermore, to improve the safety of workers climbing the offshore wind turbine 2 via the climbing ladder 43, it is preferable that the climbing ladder 43 is equipped with an enclosure structure 45 and two door panels 46.

[0042] The enclosure structure 45 forms an enclosure on both sides of the climbing ladder 43 in the width direction and on the side away from the base 41, and encloses a climbing space 431 for workers to climb on one side of the climbing ladder 43. To facilitate workers climbing to the end of the climbing ladder 43 away from the base 41 and then ascending the ladder 21, the enclosure structure 45 has openings 432 on both sides of the end of the climbing ladder 43 away from the base 41 for workers to enter and exit the climbing space 431. In this embodiment, since the enclosure structure 45 with the above functions is common prior art, it will not be described in detail here, and it is only briefly shown in the accompanying drawings.

[0043] Two door panels 46 correspond one-to-one with two clearance openings 432, and the door panels 46 are used to control the opening and closing of the corresponding clearance openings 432. The door panels 46 are rectangular plate-shaped structures, rotatably connected to the climbing ladder 43, with their rotation axis parallel to their width direction and parallel to the height direction of the climbing ladder 43; the position where the door panels 46 are rotatably connected to the climbing ladder 43 is located at the end of the clearance opening 432 near the base 41, and the end of the door panels 46 away from their rotation axis extends outward in a direction perpendicular to the end face with a protective piece 461 for protecting workers; when the door panels 46 are rotated to their limit position towards the climbing space 431, the length direction of the door panels 46 is parallel to the length direction of the climbing ladder 43. When the door panel 46 rotates to its limit position away from the climbing space 431, the length direction of the door panel 46 is parallel to the width direction of the climbing ladder 43, causing the corresponding clearance opening 432 to open. At this time, the end face of the door panel 46 near the clearance opening 432 is available for workers to step on, and the protective member 461 provides protection for workers on the side of the door panel 46 away from the corresponding clearance opening 432, making it easier for workers to step on the door panel 46 and climb the ladder 21. In this embodiment, it is preferable that the door panel 46 can be fixed in position by a locking structure after rotating to its limit position relative to the climbing ladder 43. Since the locking structure with the above function (such as a bolt) is a common prior art, it will not be described in detail here, and its expression is omitted in the drawings.

[0044] Reference Figure 3 and Figure 5 The positioning component 5 includes a telescopic frame 51 and two positioning carriers 52 for improving the positional stability of the offshore maintenance vessel 1 after it is moored to one side of the offshore wind turbine 2.

[0045] The telescopic frame 51 has a rectangular frame structure, with one end fixedly connected to the base 41 along its length. It extends horizontally outwards, and the climbing ladder 43 is located above the telescopic frame 51. When the climbing ladder 43 is in its retractable position, it is vertically aligned with the telescopic frame 51. The telescopic frame 51 has the function of telescopic adjustment along its length. When the offshore maintenance vessel 1 contacts and abuts against the offshore wind turbine 2 via the cushion 31, if the telescopic frame 51 is in its retracted position, it will maintain a certain distance from the offshore wind turbine 2. If the telescopic frame 51 is in its extended position, it will be able to contact the offshore wind turbine 2. In this embodiment, since the telescopic frame 51 with the above functions is common prior art, it will not be described in detail here, and the accompanying drawings only provide a brief representation.

[0046] Reference Figure 2 and Figure 5 Two positioning carriers 52 are respectively installed on both sides of the telescopic frame 51 at the end away from the base 41, and the two positioning carriers 52 are symmetrically distributed on the telescopic frame 51. In this embodiment, preferably, a power supply for supplying power to the positioning carriers 52 is fixedly installed on the top of the marine maintenance vessel 1 around the base 41; since the power supply with the above function is a common prior art, it will not be described in detail here, and its expression is omitted in the accompanying drawings.

[0047] Reference Figure 6 and Figure 7 The positioning carrier 52 includes a vehicle body 521, four wheels 522, multiple electromagnets 523, a positioning belt 524, and a winding component 525.

[0048] The take-up coil 525 is rotatably mounted on the telescopic frame 51, with its rotation axis vertical, and its rotation relative to the telescopic frame 51 is controlled by a power supply. The positioning belt 524 is flexible and has a certain tensile strength. One end of its positioning belt is fixedly connected to the take-up coil 525 and can be wound onto the take-up coil 525. The telescopic frame 51 has a space inside for winding and storing the positioning belt 524. Its other end is fixedly connected to the vehicle body 521. The vehicle body 521 has a rectangular parallelepiped structure, and one end of the positioning belt 524 is fixedly connected to one end of the vehicle body 521 along its length. The wheel 522 is rotatably connected to the vehicle body 521, and its rotation axis is perpendicular to the vehicle body. The width of the vehicle body 521 is parallel, and four wheels 522 are located near the four corners of the vehicle body 521. The vehicle body 521 can contact the surface of the offshore wind turbine 2 through the wheels 522, and the wheels 522 are powered and controlled to rotate relative to the vehicle body 521. Electromagnets 523 are fixedly installed on the surface of the vehicle body 521. Electromagnets 523 are distributed at one end of the vehicle body 521 away from the corresponding positioning strip 524 and on the side of the vehicle body 521 in the height direction near the position of the wheels 522. The electromagnets 523 are powered and controlled to magnetically attract each other with the electromagnets 523 on the offshore wind turbine 2 or another vehicle body 521. In this embodiment, since the electromagnets 523 with the above functions are common prior art, they will not be described in detail here, and only a brief representation is given in the accompanying drawings.

[0049] When the winding component 525 rotates relative to the telescopic frame 51, causing the positioning belt 524 to retract to its limit state, the corresponding vehicle body 521 will come into contact with the telescopic frame 51. When both vehicle bodies 521 come into contact with the telescopic frame 51, the length direction of the two vehicle bodies 521 extends in a widening shape away from the telescopic frame 51. At this time, after controlling the telescopic frame 51 to extend and retract closer to the offshore wind turbine 2, it will be easier for the vehicle body 521 to come into contact with the surface of the offshore wind turbine 2 through the four wheels 522.

[0050] When both positioning straps 524 are retracted to their limit and both vehicle bodies 521 are in contact with the surface of the offshore wind turbine 2 through the four wheels 522, the electromagnet 523 is activated. The magnetic attraction between the electromagnet 523 and the offshore wind turbine 2 allows the vehicle body 521 to overcome its own gravity and other external forces and maintain contact with the surface of the offshore wind turbine 2 through the four wheels 522. At this time, the winding component 525 is rotated to release the positioning straps 524 and the wheels 522 are rotated, which drives the vehicle body 521 to move the positioning straps 524 around the offshore wind turbine 2. Finally, after the two vehicle bodies 521 come into contact, they are locked in position by the magnetic attraction of the two contacting electromagnets 523. At this time, the structure formed by the telescopic frame 51, the two positioning straps 524 and the two vehicle bodies 521 will surround the offshore wind turbine 2. At this time, the degree of compression of the cushion 31 by the offshore wind turbine 2 can be adjusted by controlling the rotation of the winding component 525, which can further effectively improve the positional stability of the offshore maintenance vessel 1 relative to the offshore wind turbine 2.

[0051] The implementation principle of a docking device for offshore wind turbine operation and maintenance according to an embodiment of this application is as follows: After the offshore maintenance vessel 1 approaches the offshore wind turbine 2, it first contacts the side of the offshore wind turbine 2 away from the ladder 21 via the cushion 31. Then, it controls the climbing ladder 43 to rotate upward to its limit position. Next, it controls the base 41 to rotate so that the telescopic frame 51 aligns with the offshore wind turbine 2 along its own telescopic direction. Then, it controls the telescopic frame 51 to extend and retract so that the vehicle body 521 approaches the offshore wind turbine 2 until the vehicle body 521 contacts the surface of the offshore wind turbine 2 through its four wheels 522. Then, it controls the two vehicle bodies 521 to drive around the surface of the offshore wind turbine 2 until the two vehicle bodies 521 contact and interlock. Then, it controls the winding component 525 to wind up the positioning belt 524, so that the cushion 31 is compressed by the offshore wind turbine 2 until the multiple adjusting wheels 32 contact and abut against the surface of the offshore wind turbine 2. Then, it controls the third drive component 33 to drive the multiple adjusting wheels 32 to rotate, assisting the offshore maintenance vessel 1 to move upward. The maintenance vessel 1 rotates around the offshore wind turbine 2 to adjust its position relative to the turbine 2, so that it is closer to the ladder 21. Then, the retractor 525 is controlled to slightly release the positioning strap 524, so that the cushion 31 is reduced from being squeezed by the offshore wind turbine 2 until only a few rollers 34 are in contact with the surface of the offshore wind turbine 2. Then, the climbing ladder 43 is controlled to rotate towards the offshore wind turbine 2 until it is in contact with the ladder 21 on its side. Then, the staff enters the climbing space 431 to climb. After the staff climbs to the position near the clearance opening 432 in the climbing space 431, the adjacent door panel 46 is opened according to the position of the ladder 21. Then, the staff can step on the door panel 46 to help them climb the ladder 21 smoothly. They can then continue to climb to the position of the offshore wind turbine 2 to be inspected.

[0052] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A docking device for offshore wind turbine operation and maintenance, installed on an offshore maintenance vessel (1), characterized in that, It includes a climbing component (4), a docking component (3), and a positioning component (5); The climbing assembly (4) includes a base (41), a first drive member (42), a climbing ladder (43), and a second drive member (44); the base (41) is rotatably connected to the offshore maintenance vessel (1), its rotation axis is vertical, and the first drive member (42) is used to drive the base (41) to rotate; one end of the climbing ladder (43) is rotatably connected to the base (41) and the other end is used to contact the offshore wind turbine (2), its rotation axis is horizontal, and the second drive member (44) is used to drive the climbing ladder (43) to rotate; The docking assembly (3) includes an elastic cushion (31); the cushion (31) is disposed on the outside of the offshore maintenance vessel (1), and its outside has an arc-shaped surface adapted to the offshore wind turbine (2); The positioning component (5) includes a telescopic frame (51) and two positioning carriers (52); one end of the telescopic frame (51) is fixedly connected to the base (41), and its telescopic direction is aligned vertically with the extension direction of the climbing ladder (43) relative to the base (41), and the two positioning carriers (52) are respectively arranged on both sides of the other end of the telescopic frame (51); The positioning vehicle (52) includes a vehicle body (521), four wheels (522), multiple electromagnets (523), a positioning belt (524), and a winding component (525); the winding component (525) is rotatably connected to the telescopic frame (51), and its rotation axis is perpendicular to the extension direction of the telescopic frame (51); one end of the positioning belt (524) is connected to the winding component (525) and can be wound onto the winding component (525), and the other end is connected to the vehicle body (521); the wheels (522) are rotatably connected to the vehicle body (521), and the electromagnets (523) are disposed on the vehicle body (521); the vehicle body (521) is attracted to the surface of the offshore wind turbine (2) by the electromagnets (523) and travels on the surface of the offshore wind turbine (2) by rotating the wheels (522), and the two vehicle bodies (521) are attracted and locked together by the electromagnets (523).

2. The docking device for offshore wind turbine operation and maintenance according to claim 1, characterized in that, A ladder (21) is provided on one side of the offshore wind turbine (2), and there is space below the ladder (21) above the sea surface for the docking component (3) to dock and the positioning component (5) to be positioned.

3. The docking device for offshore wind turbine operation and maintenance according to claim 2, characterized in that, The docking component (3) is located on one side of the ocean maintenance vessel (1) in the width direction.

4. A docking device for offshore wind turbine operation and maintenance according to claim 3, characterized in that, The docking assembly (3) also includes a plurality of adjusting wheels (32); The adjusting wheel (32) is rotatably connected to the offshore maintenance vessel (1), and its rotation axis is vertical; the adjusting wheel (32) is located inside the cushion (31), and it is exposed after the cushion (31) is squeezed and deformed.

5. A docking device for offshore wind turbine operation and maintenance according to claim 4, characterized in that, The docking assembly (3) further includes a plurality of third drive members (33), and the plurality of third drive members (33) are used to drive the plurality of adjustment wheels (32) to rotate.

6. A docking device for offshore wind turbine operation and maintenance according to claim 3, characterized in that, The docking assembly (3) also includes a plurality of rollers (34); The roller (34) is rotatably connected to the offshore maintenance vessel (1), and its rotation axis is horizontal; the roller (34) is located inside the cushion (31), and is exposed after the cushion (31) is squeezed and deformed.

7. A docking device for offshore wind turbine operation and maintenance according to claim 2, characterized in that, The end of the climbing ladder (43) away from the base (41) is used to contact and abut against the side of the offshore wind turbine (2) near the ladder (21).

8. A docking device for offshore wind turbine operation and maintenance according to claim 7, characterized in that, The climbing ladder (43) has an enclosure structure (45) around one side, which forms a climbing space (431) on one side of the climbing ladder (43), and provides clearance openings (432) on both sides of the end of the climbing ladder (43) away from the base (41).

9. A docking device for offshore wind turbine operation and maintenance according to claim 8, characterized in that, The climbing ladder (43) is provided with a door panel (46) at the clearance opening (432) for controlling the opening and closing of the clearance opening (432). The door panel (46) is rotatably connected to the climbing ladder (43), and its rotation axis is perpendicular to the extension direction of the climbing ladder (43).

10. A docking device for offshore wind turbine operation and maintenance according to claim 9, characterized in that, A protective element (461) extends from one side of the door panel (46); when the door panel (46) is rotated to its limit position away from the climbing space (431), the door panel (46) provides a step surface for the worker, and the protective element (461) provides protection on the side of the door panel (46) away from the clearance opening (432); when the door panel (46) is rotated to its limit position towards the climbing space (431), the protective element (461) is located in the climbing space (431).

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