Device for repairing offshore wind power pile

Abstract

The utility model relates to a device for repairing an offshore wind power pile. The device comprises a maintenance ship, a support, a driving part and a maintenance part, wherein one end of the support is fixedly arranged on the maintenance ship, and the other end of the support extends out of the maintenance ship; the driving part is arranged at the other end of the support; the maintenance part comprises a sealing box body arranged on the driving part, an inlet and outlet formed in one vertical side plate of the box body, a sealing part used for sealing the inlet and outlet, and two through holes formed in the other vertical side plate of the box body and used for allowing two hands of maintenance personnel to penetrate through respectively; the two waterproof gloves are fixedly arranged on the box body, the transparent observation window is arranged on the other vertical side plate of the box body, the edges of the inlet ends of the two waterproof gloves are correspondingly and fixedly connected with the edges of the two through holes respectively, and the driving part is used for driving the box body to ascend and descend. When a maintainer uses the device for repairing the offshore wind power pile to repair the part, located under seawater, of the offshore wind power pile, the damage to the maintainer can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of offshore wind power device maintenance equipment, in particular to a device for repairing offshore wind power piles. Background Art

[0002] As a device that converts wind energy into electrical energy, offshore wind turbines are also a future trend. Making full use of ocean energy is also a future trend, so the prospects of offshore wind turbines are very promising. During the installation and use of offshore wind power piles, offshore wind power piles are easily damaged. After the offshore wind power piles are damaged, they need to be repaired in time.

[0003] Since part of the offshore wind power pile is located under the seawater, when repairing the part of the offshore wind power pile located under the seawater, the maintenance personnel generally wear diving suits made of flexible materials to dive into the seawater to repair the offshore wind power pile. During the repair process of the part of the offshore wind power pile located under the seawater, the whole body of the maintenance personnel will be subjected to water pressure for a long time, which will cause great harm to the maintenance personnel's body. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a device for repairing offshore wind power piles, so as to solve the problem in the prior art that during the repair of the part of the offshore wind power pile located under the sea water, the whole body of the maintenance personnel will be subjected to water pressure for a long time, causing great harm to the body of the maintenance personnel.

[0005] The utility model is realized by the following technical solutions:

[0006] A device for repairing offshore wind power piles, comprising a maintenance ship, a bracket with one end fixed on the maintenance ship and the other end extending outside the maintenance ship, a driving unit arranged at the other end of the bracket, and a maintenance unit arranged on the driving unit; the maintenance unit comprises a sealed box arranged on the driving unit and used to accommodate maintenance personnel, an inlet and outlet arranged on a vertical side plate of the box and used for maintenance personnel to enter and exit the box, a sealing unit for sealing the inlet and outlet, two through holes arranged on the other vertical side plate of the box and used for two hands of maintenance personnel to pass through respectively, two waterproof gloves fixed on the box, and a transparent observation window arranged on the other vertical side plate of the box, the edges of the inlet ends of the two waterproof gloves are respectively fixedly connected with the edges of the two through holes, and the driving unit is used to drive the box to rise and fall.

[0007] Furthermore, the driving part includes a winding mechanism arranged at the other end of the bracket and a pull rope arranged on the winding mechanism; the upper end of the pull rope is wound on the winding mechanism, and the lower end of the pull rope is fixedly connected to the middle part of the top plate of the box body, and the winding mechanism is used to wind up the pull rope, and the winding mechanism is also used to loosen the pull rope.

[0008] Furthermore, the winding mechanism includes a seat plate fixed to the other end of the bracket, two mounting seats fixed to the seat plate, a winding drum with two ends rotatably connected to the two mounting seats, and a driving mechanism provided on the seat plate and used to drive the winding drum to rotate forward or reverse; the upper end of the pull rope is wound on the winding drum.

[0009] Furthermore, the inlet and outlet are circular, and the sealing portion includes a cover plate located on the outside of the one side plate of the box body and used to cover the inlet and outlet, a soft elastic rubber ring provided on the cover plate and surrounding the inlet and outlet, and a holding portion used to provide pressure on the cover plate toward the box body.

[0010] Furthermore, a plurality of through holes are formed on the cover plate, and the plurality of through holes are evenly arranged around the soft elastic rubber ring in a circumferential direction; the pressing portion includes a plurality of screws and a plurality of nuts, and the plurality of screws correspond one-to-one to the plurality of through holes, respectively, and the plurality of nuts correspond one-to-one to the plurality of screws, one end of the screw is fixed to one side plate of the box body, and the other end of the screw passes through the corresponding through hole and is screwed into the corresponding nut, and the nut is used to press the cover plate toward the box body.

[0011] Furthermore, it also includes an air supply and exhaust part for providing fresh air into the box, and the air supply and exhaust part is also used to exhaust the gas in the box.

[0012] Furthermore, the air supply and exhaust unit includes a blower installed on the maintenance ship, an air inlet pipe with one end connected to the air outlet of the blower and the other end connected to the inner cavity of the box, and an exhaust pipe with one end fixed on the maintenance ship and the other end connected to the inner cavity of the box.

[0013] Furthermore, the bracket includes a column fixedly connected to the maintenance ship and a frame having one end rotatably connected to the column and the other end extending outside the maintenance ship; when the frame is rotated a certain angle on the column, the other end of the frame is rotated to within the range of the maintenance ship; the driving part is fixedly arranged at the other end of the frame.

[0014] Furthermore, the outer circumferential surface of the column is recessed inward to form a first annular groove and a second annular groove, and the second annular groove is located below the first annular groove; the frame body includes a first rotating ring rotatably fitted in the first annular groove, a second rotating ring rotatably fitted in the second annular groove, a cross bar with one end fixedly connected to the first rotating ring and the other end extending to the outside of the maintenance ship, and an inclined bar with one end fixedly connected to the second rotating ring and the other end fixedly connected to the other end of the cross bar; when the cross bar rotates a certain angle on the column, the other end of the cross bar rotates to the range where the maintenance ship is located, and the driving part is fixedly arranged at the other end of the cross bar.

[0015] The beneficial effects of the utility model are:

[0016] When maintenance personnel use the device for repairing offshore wind turbine piles to repair the part of the offshore wind turbine pile located under the sea water, only the hands and part of the arms of the maintenance personnel will be subjected to water pressure for a long time, and the rest of the body of the maintenance personnel will not be subjected to water pressure, which can reduce the damage to the maintenance personnel.

[0017] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the device used for repairing offshore wind power piles.

[0019] Figure 2 This is a cross-sectional view of the maintenance section of the device for repairing offshore wind power piles.

[0020] Figure 3 This is a schematic diagram of the structure of the winding mechanism in the device for repairing offshore wind power piles.

[0021] Description of reference numerals:

[0022] Maintenance boat-1; box-2; inlet and outlet-3; waterproof gloves-4; transparent observation window-5; pull rope-6; seat plate-7; reel-8; convex plate-9; bearing-10; shaft-11; motor-12; coupling-13; cover plate-14; soft elastic rubber ring-15; screw-16; nut-17; blower-18; air inlet pipe-19; exhaust pipe-20; column-21; first rotating ring-22; second rotating ring-23; cross bar-24; inclined bar-25. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0026] In the above description of the utility model, it should be noted that the terms "one side", "the other side", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0027] In addition, the term "same" does not mean that the parts must be absolutely the same, but slight differences are allowed. The term "vertical" only means that the positional relationship between the parts is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly tilted.

[0028] See also Figure 1-Figure 3 The utility model provides a device for repairing offshore wind power piles, including a maintenance ship 1, a bracket, a driving unit and a maintenance unit. One end of the bracket is fixed on the maintenance ship 1, and the other end of the bracket extends out of the maintenance ship 1. The driving unit is arranged at the other end of the bracket, and the maintenance unit is arranged on the driving unit.

[0029] The maintenance section includes a box 2, an inlet and outlet 3, a sealing part, a through hole, a waterproof glove 4 and a transparent observation window 5. Although the through hole is not marked in the figure, the skilled person in the art should understand the structure and location of the through hole according to this specification and the drawings of the specification. The box 2 is arranged on the driving part, the box 2 is used to accommodate maintenance personnel, the inlet and outlet 3 is arranged on a vertical side plate of the box 2, the inlet and outlet 3 is used for maintenance personnel to enter and exit the box 2, the sealing part is used to seal the inlet and outlet 3, there are two through holes, the two through holes are arranged on the other vertical side plate of the box 2, the two through holes are used for the maintenance personnel to pass through the hands, the waterproof glove 4 is made of soft rubber, the waterproof glove 4 is fixed on the box 2, the transparent observation window 5 is arranged on the other vertical side plate of the box 2, the edges of the inlet ends of the two waterproof gloves 4 are respectively fixedly connected with the edges of the two through holes, and the driving part is used to drive the box 2 to rise and fall.

[0030] In the initial state, the box body 2 is located on the upper side of the seawater. When the device for repairing offshore wind power piles is used to repair the part of the offshore wind power piles located under the seawater, the maintenance ship 1 is driven to the position of the offshore wind power piles that need to be repaired. The maintenance personnel enter the box body 2 through the inlet and outlet 3, and then seal the inlet and outlet 3 through the sealing part. Then the hands of the maintenance personnel are respectively passed through the two through holes to the outside of the box body 2 and inserted into the two waterproof gloves 4 respectively. The box body 2 is driven down by the driving part to make the box body 2 descend to the depth position where the offshore wind power pile needs to be repaired. At this time, the maintenance personnel can see the position of the offshore wind power pile that needs to be repaired through the transparent observation window 5, and the hands of the maintenance personnel extended outside the box body 2 can repair the offshore wind power pile. After completing the repair of the offshore wind power pile, the driving part can drive the box body 2 to rise again to the upper side of the seawater, release the sealing of the inlet and outlet 3 by the sealing part, and the maintenance personnel can go out to the outside of the box body 2 through the inlet and outlet 3.

[0031] As for the tools and materials used to repair the offshore wind power pile, they can be lifted by other personnel to the location where the offshore wind power pile needs to be repaired through a lifting rope. When the maintenance personnel use the device for repairing offshore wind power piles to repair the part of the offshore wind power pile located under the sea water, only the hands and part of the arms of the maintenance personnel will be subjected to water pressure for a long time, and the rest of the body of the maintenance personnel will not be subjected to water pressure, which can reduce the damage to the maintenance personnel.

[0032] In this embodiment, the driving part includes a winding mechanism and a pull rope 6, the winding mechanism is arranged at the other end of the bracket, and the pull rope 6 is arranged on the winding mechanism; the upper end of the pull rope 6 is wound on the winding mechanism, and the lower end of the pull rope 6 is fixedly connected to the middle part of the top plate of the box body 2, and the winding mechanism is used to wind up the pull rope, and the winding mechanism is also used to loosen the pull rope 6.

[0033] By releasing the pull rope 6 through the reeling mechanism, the box 2 can descend under its own gravity, and by reeling the pull rope 6 through the reeling mechanism, the pull rope 6 can pull the box 2 upward. With this structure, the driving unit can drive the box 2 to rise and fall.

[0034] In this embodiment, the winding mechanism includes a seat plate 7, a mounting seat, a winding drum 8 and a driving mechanism. The seat plate 7 is fixedly mounted on the other end of the bracket. There are two mounting seats, both of which are fixed on the seat plate 7. The two ends of the winding drum 8 are rotatably connected to the two mounting seats respectively. The driving mechanism is arranged on the seat plate 7. The driving mechanism is used to drive the winding drum 8 to rotate forward or reversely. The upper end of the pull rope 6 is wound on the winding drum 8.

[0035] By driving the reel 8 to rotate forward or reversely through the driving mechanism, the reel 8 can reel in the drawstring 6 or release the drawstring 6. With this structure, the reel mechanism can reel in the drawstring 6 or release the drawstring 6.

[0036] In this embodiment, the mounting seat includes a convex plate 9 fixedly mounted on the seat plate 7 and a bearing 10 mounted on the convex plate 9. The bearings 10 on the two convex plates 9 are arranged opposite to each other. A shaft 11 is fixedly mounted in the middle of both ends of the winding drum 8. The two shafts 11 are respectively fixed in the bearing holes of the two bearings 10. With this structure, the two ends of the winding drum 8 can be rotatably connected to the two mounting seats.

[0037] In this embodiment, the driving mechanism includes a motor 12 fixed on the seat plate 7, and the output shaft of the motor 12 is connected to one of the shafts 11 through a coupling 13. By controlling the motor 12 to rotate forward or reverse, the motor 12 can drive the winding drum 8 to rotate forward or reverse. With this structure, the driving mechanism can drive the winding drum 8 to rotate forward or reverse.

[0038] In this embodiment, the inlet and outlet 3 is circular, and the sealing portion includes a cover plate 14, a soft elastic rubber ring 15 and a holding portion. The cover plate 14 is located on the outer side of the one side plate of the box body 2, and the cover plate 14 is used to cover the inlet and outlet 3. The soft elastic rubber ring 15 is arranged on the cover plate 14, and the soft elastic rubber ring 15 surrounds the inlet and outlet 3. The holding portion is used to provide pressure on the cover plate 14 toward the box body 2.

[0039] After the maintenance personnel enter the box body 2 through the inlet and outlet 3, the cover plate 14 is covered on the inlet and outlet 3, and the soft elastic rubber ring 15 is located between the cover plate 14 and the box body 2 and surrounds the inlet and outlet 3. Then, the cover plate 14 is provided with pressure toward the box body 2 through the pressing portion to press the soft elastic rubber ring 15 between the cover plate 14 and the box body 2. At this time, the sealing portion can seal the inlet and outlet 3.

[0040] When maintenance personnel need to go out of the box body 2 from inside or outside, the pressing portion releases the pressing of the cover plate 14 and removes the cover plate 14 from the position of the inlet and outlet 3, so that maintenance personnel can go out of the box body 2 from inside or outside.

[0041] In this embodiment, a plurality of through holes are formed on the cover plate 14 (although the through holes are not marked in the figure, a person skilled in the art should understand the structure and location of the through holes based on this specification and the drawings in the specification), and the plurality of through holes are evenly arranged around the soft elastic rubber ring 15 in the circumferential direction; the pressing portion includes a plurality of screw rods 16 and a plurality of nuts 17, and the plurality of screw rods 16 correspond one-to-one to the plurality of through holes, respectively, and the plurality of nuts 17 correspond one-to-one to the plurality of screw rods 16, one end of the screw rod 16 is fixed to the one side plate of the box body 2, and the other end of the screw rod 16 passes through the corresponding through hole and is screwed into the corresponding nut 17, and the nut 17 is used to press the cover plate 14 toward the box body 2.

[0042] When the cover plate 14 covers the inlet and outlet 3, each of the screw rods 16 passes through the corresponding through hole. Then, the corresponding nut 17 is screwed onto each of the screw rods 16, and the nut 17 presses the cover plate 14 toward the box body 2. At this time, the pressing portion can provide pressure on the cover plate 14 toward the box body 2.

[0043] The corresponding nut 17 is unscrewed on each screw rod 16, so that the pressing of the pressing part on the cover plate 14 can be released. Then the cover plate 14 is moved away from the box body 2, so that the cover plate 14 can be removed from the position of the inlet and outlet 3.

[0044] The device for repairing offshore wind power piles described in the utility model also includes an air supply and exhaust part, which is used to provide fresh air into the box body 2, and is also used to exhaust the gas in the box body 2.

[0045] The air supply and exhaust part can provide fresh air into the box 2, and can also discharge the gas in the box 2, so that the inner cavity of the box 2 can be ventilated, so that maintenance personnel can stay in the box 2 for a longer time, and can perform repair work on the part of the offshore wind power pile located under the sea for a long time.

[0046] In this embodiment, the air supply and exhaust part includes a blower 18, an air intake pipe 19 and an exhaust pipe 20. The blower 18 can be a blower with model number of Deli DL661600B. The blower 18 is arranged on the maintenance ship 1. One end of the air intake pipe 19 is connected to the air outlet end of the blower 18, and the other end of the air intake pipe 19 is connected to the inner cavity of the box body 2. One end of the exhaust pipe 20 is fixed on the maintenance ship 1, and the other end of the exhaust pipe 20 is connected to the inner cavity of the box body 2.

[0047] The blower 18 and the air intake pipe 19 can provide fresh air into the box 2, and while the blower 18 and the air intake pipe 19 supply air into the box 2, the gas in the box 2 can be discharged through the exhaust pipe 20. With this structure, the air supply and exhaust unit can provide fresh air into the box 2, and the air supply and exhaust unit can discharge the gas in the box 2.

[0048] In this embodiment, the bracket includes a column 21 and a frame body, the column 21 is fixedly connected to the maintenance ship 1, one end of the frame body is rotatably connected to the column 21, and the other end of the frame body extends out of the maintenance ship 1. When the frame body rotates a certain angle on the column 21, the other end of the frame body rotates to the range where the maintenance ship 1 is located; the driving part is fixedly arranged at the other end of the frame body.

[0049] When the driving unit drives the box 2 to rise above the top of the maintenance ship 1, the frame is rotated at a certain angle on the column 21 so that the other end of the frame is rotated to the range where the maintenance ship 1 is located. At this time, the driving unit and the box 2 can be rotated to the range where the maintenance ship 1 is located, and then the driving unit drives the box 2 to descend to be supported on the maintenance ship 1. This makes it convenient for maintenance personnel on the maintenance ship 1 to enter the box 2 or go in and out of the box 2.

[0050] After the maintenance personnel enter the box 2 supported on the maintenance ship 1 on the maintenance ship 1, the box 2 is driven to rise to a certain height by the driving unit, and then the frame is rotated to a certain angle on the column 21, so that the box 2 can be driven out of the range where the maintenance ship 1 is located, and then the box 2 can be driven to descend into the sea water by the driving unit.

[0051] In this embodiment, the outer circumferential surface of the column 21 is inwardly recessed to form a first annular groove and a second annular groove (not marked in the figure, but a person skilled in the art should understand the structure and position of the first annular groove and the second annular groove according to this specification and the drawings in the specification), and the second annular groove is located below the first annular groove; the frame body includes a first rotating ring 22, a second rotating ring 23, a cross bar 24 and an inclined rod 25, the first rotating ring 22 is rotatably fitted in the first annular groove, the second rotating ring 23 is rotatably fitted in the second annular groove, one end of the cross bar 24 is fixedly connected to the first rotating ring 22, the other end of the cross bar 24 extends out of the maintenance ship 1, one end of the inclined rod 25 is fixedly connected to the second rotating ring 23, and the other end of the inclined rod 25 is fixedly connected to the other end of the cross bar 24; when the cross bar 24 rotates a certain angle on the column 21, the other end of the cross bar 24 rotates to the range where the maintenance ship 1 is located, and the driving part is fixedly arranged at the other end of the cross bar 24.

[0052] The first rotating ring 22 is rotatably fitted in the first annular groove, and the second rotating ring 23 is rotatably fitted in the second annular groove, so that one end of the frame can be rotatably connected to the column 21. Since the other end of the cross bar 24 extends out of the maintenance boat 1, the other end of the frame can extend out of the maintenance boat 1 with this structure.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A device for repairing offshore wind power piles, characterized in that: The invention comprises a maintenance boat, a bracket with one end fixed on the maintenance boat and the other end extending out of the maintenance boat, a driving part arranged on the other end of the bracket and a maintenance part arranged on the driving part; the maintenance part comprises a sealed box arranged on the driving part and used to accommodate maintenance personnel, an inlet and outlet arranged on a vertical side plate of the box and used for maintenance personnel to enter and exit the box, a sealing part used to seal the inlet and outlet, two through holes arranged on the other vertical side plate of the box and used for two hands of maintenance personnel to pass through respectively, two waterproof gloves fixed on the box and a transparent observation window arranged on the other vertical side plate of the box, the edges of the inlet ends of the two waterproof gloves are respectively fixedly connected with the edges of the two through holes, and the driving part is used to drive the box to rise and fall.

2. The device for repairing offshore wind power piles according to claim 1, characterized in that: The driving part includes a winding mechanism arranged at the other end of the bracket and a pull rope arranged on the winding mechanism; the upper end of the pull rope is wound on the winding mechanism, and the lower end of the pull rope is fixedly connected to the middle part of the top plate of the box body. The winding mechanism is used to wind up the pull rope, and the winding mechanism is also used to loosen the pull rope.

3. The device for repairing offshore wind power piles according to claim 2, characterized in that: The winding mechanism includes a seat plate fixed to the other end of the bracket, two mounting seats fixed to the seat plate, a winding drum with two ends rotatably connected to the two mounting seats, and a driving mechanism arranged on the seat plate and used to drive the winding drum to rotate forward or reverse; the upper end of the pull rope is wound on the winding drum.

4. The device for repairing offshore wind power piles according to claim 1, characterized in that: The inlet and outlet are circular, and the sealing part includes a cover plate located on the outside of the one side plate of the box body and used to cover the inlet and outlet, a soft elastic rubber ring arranged on the cover plate and surrounding the inlet and outlet, and a holding part used to provide pressure on the cover plate toward the box body.

5. The device for repairing offshore wind power piles according to claim 4, characterized in that: A plurality of through holes are formed on the cover plate, and the plurality of through holes are evenly arranged around the soft elastic rubber ring in the circumferential direction; the pressing portion includes a plurality of screws and a plurality of nuts, and the plurality of screws correspond one-to-one to the plurality of through holes, and the plurality of nuts correspond one-to-one to the plurality of screws. One end of the screw is fixed to one side plate of the box body, and the other end of the screw passes through the corresponding through hole and is screwed into the corresponding nut, and the nut is used to press the cover plate toward the box body.

6. The device for repairing offshore wind power piles according to claim 1, characterized in that: It also includes an air supply and exhaust part for providing fresh air into the box, and the air supply and exhaust part is also used to exhaust the gas in the box.

7. The device for repairing offshore wind power piles according to claim 6, characterized in that: The air supply and exhaust unit includes a blower installed on the maintenance ship, an air inlet pipe with one end connected to the air outlet of the blower and the other end connected to the inner cavity of the box, and an exhaust pipe with one end fixed on the maintenance ship and the other end connected to the inner cavity of the box.

8. The device for repairing offshore wind power piles according to claim 1, characterized in that: The bracket includes a column fixedly connected to the maintenance ship and a frame body having one end rotatably connected to the column and the other end extending out of the maintenance ship. When the frame body rotates a certain angle on the column, the other end of the frame body rotates to the range where the maintenance ship is located; the driving part is fixedly arranged at the other end of the frame body.

9. The device for repairing offshore wind power piles according to claim 8, characterized in that: The outer circumference of the column is recessed inward to form a first annular groove and a second annular groove, and the second annular groove is located below the first annular groove; the frame includes a first rotating ring rotatably fitted in the first annular groove, a second rotating ring rotatably fitted in the second annular groove, a cross bar with one end fixedly connected to the first rotating ring and the other end extending outside the maintenance ship, and an inclined bar with one end fixedly connected to the second rotating ring and the other end fixedly connected to the other end of the cross bar; when the cross bar rotates a certain angle on the column, the other end of the cross bar rotates to the range where the maintenance ship is located, and the driving part is fixedly arranged at the other end of the cross bar.

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