A wind turbine tower maintenance device and method

Abstract

The application discloses a kind of wind power tower cylinder maintenance device and method, belong to wind power maintenance technical field, including rack, the rack middle side is equipped with the suspension moving mechanism moving in tower cylinder inner wall, rotating maintenance mechanism is installed on the suspension moving mechanism, and the rotating maintenance mechanism is cleaned and repaired to the rotating maintenance mechanism of tower cylinder inner wall, the rotating maintenance mechanism is installed on the rack, and the rotating maintenance mechanism is positioned to the center of tower cylinder and is positioned to the center of tower cylinder, and the rotating maintenance mechanism is installed in the rack, and the rotating maintenance mechanism is supplied with cleaning fluid cleaning fluid supply mechanism.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wind power maintenance, in particular to a wind tower maintenance device and method. BACKGROUND

[0002] During the operation of wind power, the tower is affected by the characteristics of high-rise structure and complex wind field environment, and the tower body is prone to periodic swing and asymmetric vibration. Long-term alternating stress will continuously act on the weak part of the structure, which will cause the flange connection surface of the cylinder wall to crack and peel off due to the attenuation of bolt pretightening force and the aging of sealing gasket, and the paint film in the connection area will crack and peel off. The exposed area will accelerate the corrosion of the base material, and in severe cases, it may cause structural safety hazards, increase operation and maintenance costs and downtime risks. The aging of the sealing gasket or the high humidity in the local area will cause mold to grow inside the tower, and the metabolic products of the mold will accelerate metal corrosion, and mold spores may cause respiratory problems, so the inner wall of the tower needs to be repaired and mold removed regularly.

[0003] The Chinese patent with publication number CN218760258U proposes a device for inspecting the interior platform of a wind tower, which includes a wind tower body, a transport frame connected to the top of the wind tower body by a winch, a bearing plate connected to the top of the transport frame by a spring, a protective fence connected to the sides of the bottom of the wind tower body by a protective fence driving mechanism, a screw rod, a nut connected to the outside of the screw rod, a connecting block connecting the nut and the protective fence, a conical tooth A fixedly connected to the bottom of the screw rod, a conical tooth B meshingly connected to the outside of the conical tooth A, a gear fixedly connected between the two conical teeth B, a tooth plate meshingly connected to the back of the gear, the tooth plate and the bearing plate being connected, guide rods fixedly connected to the sides of the interior of the wind tower body, guide blocks slidingly connected to the outside of the guide rods, the guide blocks being connected to the outside of the transport frame, a bearing A fixedly connected to the side of the conical tooth B away from the gear, and the bearing A being connected to the bottom of the transport frame through a connecting arm.

[0004] However, the technical solution of this patent has the following problems:

[0005] This patent cannot quickly center and tightly adhere to the inner wall of the tower, cannot move and clean at the same time, and cannot adjust the angle position to avoid the tower facilities during maintenance.

[0006] Therefore, the present application designs a wind tower maintenance device and method to solve the above problems. SUMMARY

[0007] In view of the above-mentioned shortcomings of the prior art, the present application provides a wind tower maintenance device and method.

[0008] To achieve the above object, the present application is realized by the following technical solutions:

[0009] A wind power tower maintenance device, comprising a rack, a suspended moving mechanism moving in the inner wall of the tower is installed in the middle of the rack, a rotating maintenance mechanism for cleaning and repairing the inner wall of the tower is installed on the suspended moving mechanism, a manual centering mechanism for positioning the center of the tower is installed on the rack, and a cleaning liquid supply mechanism for supplying cleaning liquid to the rotating maintenance mechanism is installed in the rack.

[0010] The suspended moving mechanism comprises a telescopic mechanism and two vertical moving mechanisms, the telescopic mechanism is installed in the middle of the rack, and the two vertical moving mechanisms are respectively installed on the two output ends of the telescopic mechanism, the telescopic mechanism comprises a first driving assembly and two reverse telescopic assemblies, the first driving assembly is installed in the middle of the rack, and the two reverse telescopic assemblies are symmetrically installed on the first driving assembly, the vertical moving mechanism comprises a moving assembly and a water blocking assembly, the moving assembly is installed on the reverse telescopic assembly, and the water blocking assembly is installed on the moving assembly.

[0011] Further, the first driving assembly comprises a moving frame, a first driving motor and a first gear, a rectangular slot is formed in the middle of the rack, the moving frame is located in the rectangular slot, the first driving motor is fixedly installed in the middle of the moving frame, and the first gear is fixedly installed on the output shaft of the first driving motor, the reverse telescopic assembly comprises a sliding wall and a rack, the sliding wall is slidably connected to the moving frame, and the rack is fixedly installed on the sliding wall, and the rack and the first gear are meshed with each other.

[0012] Further, the moving assembly comprises a rotating assembly and a driving assembly, the rotating assembly is installed at one end of the sliding wall away from the moving frame, and the driving assembly is installed at one end of the rotating assembly away from the sliding wall.

[0013] Further, the rotating assembly comprises a vertical plate, an electric rotating workbench and a rotating plate, the vertical plate is fixedly installed at one end of the sliding wall away from the moving frame, the electric rotating workbench is fixedly installed on the sliding wall, the rotating plate is rotatably connected to the vertical plate, one end of the rotating plate is fixedly connected to the output end of the electric rotating workbench, and the driving assembly comprises an anti-skid wheel and a second driving motor, a plurality of anti-skid wheels are rotatably connected to one end of the rotating plate away from the sliding wall through rotating shafts, the second driving motor is fixedly installed on the rotating plate, and the output shaft of the second driving motor is fixedly connected to the rotating shafts of two anti-skid wheels.

[0014] Further, the water blocking assembly comprises guide rods, a protective frame, an electric telescopic rod and elastic rubber strips, a plurality of the guide rods are fixedly installed at one end of the vertical plate close to the sliding wall, the protective frame is slidably connected to the guide rods, the upper side of the protective frame is a chevron-shaped slope, the electric telescopic rod is fixedly installed on the sliding wall, the output end of the electric telescopic rod is fixedly connected to the protective frame, and the elastic rubber strips are fixedly installed at the end of the protective frame away from the sliding wall.

[0015] Further, the rotating maintenance mechanism comprises a second driving assembly, a flushing assembly and a repairing assembly, the second driving assembly is installed on the moving frame, the flushing assembly is installed on the output end of the second driving assembly, and the repairing assembly is installed on the output end of the second driving assembly.

[0016] Further, the flushing assembly comprises a first pipeline, a second pipeline, a sleeve and first nozzles, one end of the first pipeline is fixedly installed at the input end of the sliding ring, one end of the second pipeline is fixedly installed at the output end of the sliding ring, the sleeve is fixedly installed at the output end of the linear module, the end of the second pipeline away from the sliding ring is slidably and sealingly connected in the sleeve, and the end of the sleeve away from the second pipeline is fixedly installed with a plurality of the first nozzles.

[0017] Further, the repairing assembly comprises a polishing head, a fourth driving motor, second nozzles and third nozzles, the polishing head is rotatably connected to the output end of the linear module through a rotating shaft, the fourth driving motor is fixedly installed at the output end of the linear module, the output shaft of the fourth driving motor is fixedly connected to the rotating shaft of the polishing head, the second nozzles and the third nozzles are fixedly installed at the output end of the linear module, the second nozzles are connected to an external paint supply device through a pipeline for painting the polished part, and the third nozzles are connected to an external air supply device through a pipeline for blowing and cleaning the polished part.

[0018] Further, the manual centering mechanism comprises universal wheels, a rotating block and distance measuring sensors, a plurality of the universal wheels are fixedly installed at the lower side of the rack, the rotating block is rotatably connected to the rack, the rotating block rotates with damping on the rack, a plurality of the distance measuring sensors are distributed in a circular array around the center of the rotating block on the side wall of the rotating block, and the distance measuring sensors are fixedly installed on the rotating block.

[0019] In order to better achieve the object of the present application, the present application also provides a method for using the wind power tower maintenance device, comprising the following steps:

[0020] Step one: place the device at the bottom of the wind power tower to be maintained, manually rotate the rotating block to the appropriate position, measure the position of the inner wall of the tower by the plurality of distance measuring sensors, manually move the rack so that the distance measured by each distance measuring sensor is within the error range, that is, the center of the rack and the center of the tower are approximately coincident, and the universal wheel is locked;

[0021] Step two: the first drive assembly drives the two vertical movement mechanisms to move closely to the inner wall of the tower, the output shaft of the second drive motor rotates to drive the anti-skid wheel to rotate, and the output end of the electric rotating workbench rotates to drive the anti-skid wheel to deflect, so as to move the device to the top of the tower, the protective frame of the water blocking assembly is extended, and the elastic rubber strip is closely attached to the inner wall of the tower;

[0022] Step three: the second drive assembly drives the flushing assembly to move to the preset position, the water pump pumps the cleaning liquid in the water tank into the first nozzle of the flushing assembly, the cleaning liquid is sprayed from the first nozzle to flush the inner wall of the tower;

[0023] Step four: the second drive assembly drives the repair assembly to move to the preset position, the repair assembly polishes and cleans the inner wall of the tower and sprays paint, and after the tower is repaired in all directions from top to bottom, the maintenance of the tower is completed.

[0024] Compared with the prior art, the present application has the following advantages: 1. The two vertical movement mechanisms are closely attached to the inner wall of the tower through the telescopic mechanism, the second drive motor output shaft of the drive assembly of the movement assembly of the vertical movement mechanism rotates to drive the anti-skid wheel to rotate, so that the vertical movement mechanism can move up and down on the inner wall of the tower, the output end of the electric rotating workbench of the rotating assembly rotates to drive the rotating plate to rotate on the vertical plate by a preset angle, so that the drive assembly rotates by a preset angle, at this time, the vertical movement mechanism can move up and down on the inner wall of the tower while performing small-angle left and right deflection, so that the vertical movement mechanism can turn when moving up and down on the tower, which is beneficial to the device to quickly center and closely attach to the inner wall of the tower for high-altitude movement in any direction;

[0025] 2. The output shaft of the electric telescopic rod of the water blocking assembly is elongated to drive the protective frame to move towards the anti-skid wheel, the protective frame moving towards the anti-skid wheel drives the elastic rubber strip to move towards the anti-skid wheel, the elastic rubber strip closely attaches to the inner wall of the tower, and the vertical movement mechanism moves on the inner wall of the tower, so that the position near the anti-skid wheel is protected by the elastic rubber strip, the protective frame and the vertical plate, the cleaning liquid is blocked when cleaning the inner wall of the tower, so that the inner wall of the tower in the position of the protective frame will not be splashed by the cleaning liquid, the anti-skid wheel is prevented from slipping when moving on the inner wall of the tower, which is beneficial to blocking the cleaning liquid from flowing into the position of the anti-skid wheel, ensuring the adhesion and reliability of the movement assembly under any working condition, thereby ensuring the smooth progress of the entire maintenance process.

[0026] 3. Observation and maintenance are performed via a camera connected to an external controller. The output shaft of the third drive motor of the second drive component of the rotary maintenance mechanism rotates, driving the third gear to rotate. The third gear rotates along the second gear, causing the rotating frame to rotate. The rotation of the rotating frame drives the linear module to rotate. The output end of the linear module moves, causing the flushing component and the repair component to move. After the flushing component and the repair component move to a preset distance close to the inner wall of the tower, they flush and repair the inner wall of the tower while avoiding other facilities on the inner wall of the tower. This allows for flexible adjustment of angle and position, effectively cleaning and repairing the target area while avoiding other facilities inside the tower, thus improving the efficiency of maintenance operations. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0028] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0029] Figure 2 This is a front view of the present invention;

[0030] Figure 3 Along Figure 2 Sectional view along the AA direction;

[0031] Figure 4 for Figure 3 Enlarged view of A in the middle;

[0032] Figure 5 This is a top view of the present invention;

[0033] Figure 6 Along Figure 5 Sectional view along the BB direction;

[0034] Figure 7 This is a partial structural diagram of the suspended moving mechanism of the present invention. Figure 1 ;

[0035] Figure 8 This is a partial structural diagram of the suspended moving mechanism of the present invention. Figure 2 ;

[0036] Figure 9 This is a partial structural diagram of the rotating maintenance mechanism of the present invention. Figure 1 ;

[0037] Figure 10This is a partial structural diagram of the rotating maintenance mechanism of the present invention. Figure 2 ;

[0038] Figure 11 This is a partial structural diagram of the rotating maintenance mechanism of the present invention. Figure 3 ;

[0039] Figure 12 This is a partial structural schematic diagram of the manual centering mechanism and the cleaning fluid supply mechanism of the present invention;

[0040] Figure 13 for Figure 12 A magnified view of B in the middle.

[0041] The labels in the diagram represent:

[0042] 1. Frame; 2. Suspended moving mechanism; 21. Moving frame; 22. First drive motor; 23. First gear; 24. Rectangular slot; 25. Sliding wall; 26. Rack; 27. Vertical plate; 28. Electric rotary worktable; 29. ​​Rotating plate; 210. Anti-slip wheel; 211. Second drive motor; 212. Guide rod; 213. Protective frame; 214. Electric telescopic rod; 215. Elastic rubber strip; 3. Rotation maintenance mechanism; 31. Rotating frame; 32. Sliding... 33. Ring; 34. Second gear; 35. Third drive motor; 36. Linear module; 37. First pipe; 38. Second pipe; 39. Sleeve; 310. First nozzle; 311. Grinding head; 312. Fourth drive motor; 313. Second nozzle; 314. Third nozzle; 4. Manual centering mechanism; 41. Caster wheel; 42. Rotating block; 43. Distance sensor; 5. Cleaning fluid supply mechanism; 51. Water tank; 52. Water pump. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0044] The present invention will be further described below with reference to embodiments.

[0045] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0046] Example 1: In some examples, please refer to Figures 1-13A wind turbine tower maintenance device includes a frame 1, a suspended moving mechanism 2 that moves along the inner wall of the tower is installed on the side of the frame 1, a rotating maintenance mechanism 3 for cleaning and repairing the inner wall of the tower is installed on the suspended moving mechanism 2, a manual centering mechanism 4 for positioning the center of the tower is installed on the frame 1, and a cleaning fluid supply mechanism 5 for supplying cleaning fluid to the rotating maintenance mechanism 3 is installed inside the frame 1.

[0047] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 , Figure 8 As shown, the suspended moving mechanism 2 includes: a telescopic mechanism and a vertical moving mechanism. The telescopic mechanism is installed on the middle side of the frame 1, and the two vertical moving mechanisms are respectively installed on the two output ends of the telescopic mechanism. The telescopic mechanism includes: a first driving component and a reverse telescopic component. The first driving component is installed on the middle side of the frame 1, and the two reverse telescopic components are symmetrically installed on the first driving component. The vertical moving mechanism includes: a moving component and a water-blocking component. The moving component is installed on the reverse telescopic component, and the water-blocking component is installed on the moving component.

[0048] The first driving component includes a movable frame 21, a first driving motor 22, and a first gear 23. A rectangular slot 24 is provided in the middle of the frame 1, and the movable frame 21 is located in the rectangular slot 24. The first driving motor 22 is fixedly installed in the middle of the movable frame 21, and the first gear 23 is fixedly installed on the output shaft of the first driving motor 22. The reverse telescopic component includes a sliding wall 25 and a rack 26. The sliding wall 25 is slidably connected to the movable frame 21, and the rack 26 is fixedly installed on the sliding wall 25. The rack 26 and the first gear 23 mesh with each other.

[0049] The first drive motor 22 of the first drive assembly of the telescopic mechanism rotates, driving the first gear 23 to rotate. The rotation of the first gear 23 drives the two racks 26 to move in opposite directions. The movement of the two racks 26 in opposite directions drives the two sliding walls 25 to move in opposite directions. The movement of the two sliding walls 25 in opposite directions drives the vertical moving mechanism to move in opposite directions, so that the two vertical moving mechanisms are in close contact with the inner wall of the tower. This facilitates the vertical moving mechanism to move after being closely attached to the inner wall of the tower, and helps the vertical moving mechanism to quickly center and closely contact the inner wall.

[0050] The moving component includes a rotating component and a driving component. The rotating component is mounted on the end of the sliding wall 25 away from the moving frame 21, and the driving component is mounted on the end of the rotating component away from the sliding wall 25.

[0051] The rotating assembly includes a vertical plate 27, an electric rotary worktable 28, and a rotating plate 29. The vertical plate 27 is fixedly installed on the end of the sliding wall 25 away from the moving frame 21. The electric rotary worktable 28 is fixedly installed on the sliding wall 25. The rotating plate 29 is rotatably connected to the vertical plate 27. One end of the rotating plate 29 is fixedly connected to the output end of the electric rotary worktable 28.

[0052] The drive assembly includes: anti-slip wheels 210 and a second drive motor 211. The multiple anti-slip wheels 210 are rotatably connected to one end of the rotating plate 29 away from the sliding wall 25 via rotating shafts. The second drive motor 211 is fixedly mounted on the rotating plate 29. The output shaft of the second drive motor 211 is fixedly connected to the rotating shafts of two of the anti-slip wheels 210. The second drive motor 211 is a dual-output shaft motor.

[0053] Two vertical moving mechanisms are closely attached to the inner wall of the tower. The output shaft of the second drive motor 211 of the moving component of the vertical moving mechanism rotates, driving the anti-slip wheel 210 to rotate, so that the vertical moving mechanism can move up and down on the inner wall of the tower. The output end of the electric rotating worktable 28 of the rotating component rotates, driving the rotating plate 29 to rotate on the vertical plate 27 by a preset angle, so that the drive component rotates by a preset angle. At this time, the vertical moving mechanism can move up and down on the inner wall of the tower while making small left and right deflections, so that the vertical moving mechanism can turn while moving up and down on the tower, which is conducive to the equipment quickly centering and moving in any direction at high altitude while closely attached to the inner wall of the tower.

[0054] The water-blocking assembly includes: guide rods 212, a protective frame 213, an electric telescopic rod 214, and an elastic rubber strip 215. Multiple guide rods 212 are fixedly installed on one end of the vertical plate 27 near the sliding wall 25. The protective frame 213 is slidably connected to the guide rods 212. The upper side of the protective frame 213 has a herringbone-shaped slope to guide liquid flow, prevent liquid accumulation on the upper side of the protective frame 213, and prevent liquid from flowing into the anti-slip wheel 210, thus preventing the anti-slip wheel 210 from slipping when moving on the inner wall of the tower. The electric telescopic rod 214 is fixedly installed on the sliding wall 25, and its output end is fixedly connected to the protective frame 213. The elastic rubber strip 215 is fixedly installed on the end of the protective frame 213 away from the sliding wall 25. The elastic rubber strip 215 is replaceable, and the side of the elastic rubber strip away from the protective frame 213 is customized according to the curvature of different inner walls of the tower, so that the elastic rubber strip 215 can fit tightly against the inner wall of the tower.

[0055] Two vertical moving mechanisms are closely attached to the inner wall of the tower. When the vertical moving mechanisms move along the inner wall of the tower, the output shaft of the electric telescopic rod 214 of the water-blocking component extends, driving the protective frame 213 to move towards the anti-slip wheel 210. The movement of the protective frame 213 towards the anti-slip wheel 210 drives the elastic rubber strip 215 to move towards the anti-slip wheel 210. The elastic rubber strip 215 is closely attached to the inner wall of the tower. When the vertical moving mechanisms move along the inner wall of the tower, the area near the anti-slip wheel 210 is protected by the elastic rubber strip 215, the protective frame 213, and the vertical plate 27, blocking the cleaning fluid when cleaning the inner wall of the tower. This prevents the inner wall of the tower inside the protective frame 213 from splashing with the cleaning fluid, avoids the anti-slip wheel 210 from slipping when moving along the inner wall of the tower, and helps to prevent the cleaning fluid from flowing into the anti-slip wheel 210. This ensures the adhesion and reliability of the moving components under any working condition, thereby ensuring the smooth progress of the entire maintenance process.

[0056] The rotating maintenance mechanism 3 includes a second drive assembly, a flushing assembly, and a repair assembly. The second drive assembly is mounted on the movable frame 21. The flushing assembly is mounted on the output end of the second drive assembly. The repair assembly is mounted on the output end of the second drive assembly. The second drive assembly includes a rotating frame 31, a slip ring 32, a second gear 33, a third drive motor 34, a third gear 35, and a linear module 36. The rotating frame 31 is rotatably connected to the movable frame 21. The fixed end of the slip ring 32 is fixedly mounted on the movable frame 21, and the rotating end of the slip ring 32 is fixedly connected to the rotating frame 31. The second gear 33 is fixedly mounted on the rotating end of the slip ring 32. The third drive motor 34 is fixedly mounted on the rotating frame 31. The third gear 35 is fixedly mounted on the output shaft of the third drive motor 34. The third gear 35 and the second gear 33 mesh with each other. The linear module 36 is fixedly mounted on the rotating frame 31.

[0057] Multiple cameras are fixedly installed at the output ends of both the movable frame 21 and the linear module 36. These cameras are connected to an external controller, allowing the images and videos of the upper part of the tower to be observed from the lower part of the tower, thus further improving maintenance efficiency.

[0058] like Figure 5 , Figure 6 , Figure 9 , Figure 10 , Figure 11As shown, the output shaft of the third drive motor 34 of the second drive component of the rotating maintenance mechanism 3 rotates, driving the third gear 35 to rotate. This causes the third gear 35 to rotate along the second gear 33, which in turn causes the rotating frame 31 to rotate. The rotation of the rotating frame 31 drives the linear module 36 to rotate. The output end of the linear module 36 moves, causing the flushing component and the repair component to move. After the flushing component and the repair component move to a preset distance close to the inner wall of the tower, they flush and repair the inner wall of the tower while avoiding other facilities on the inner wall of the tower. This allows for flexible adjustment of the angle and position, effectively cleaning and repairing the target area while avoiding other facilities inside the tower, thus improving the efficiency of maintenance operations.

[0059] The flushing assembly includes a first pipe 37, a second pipe 38, a sleeve 39, and a first nozzle 310. One end of the first pipe 37 is fixedly installed at the input end of the slip ring 32, one end of the second pipe 38 is fixedly installed at the output end of the slip ring 32, and the sleeve 39 is fixedly installed at the output end of the linear module 36. The end of the second pipe 38 away from the slip ring 32 is slidably and sealed within the sleeve 39, and a plurality of first nozzles 310 are fixedly installed at the end of the sleeve 39 away from the second pipe 38.

[0060] The cleaning fluid supply mechanism 5 pumps the cleaning fluid into the first pipe 37 of the flushing assembly, and then into the second pipe 38 through the first pipe 37 and the slip ring 32. It then enters the sleeve 39 through the second pipe 38, and from the sleeve 39 into the first nozzle 310, and is sprayed out from the first nozzle 310 to flush the inner wall of the tower. When the output end of the linear module 36 moves, it drives the sleeve 39 to slide on the second pipe 38. This avoids the problem of pipe entanglement caused by excessively long pipes while ensuring that the cleaning fluid is delivered to different positions.

[0061] The repair assembly includes: a grinding head 311, a fourth drive motor 312, a second nozzle 313, and a third nozzle 314. The grinding head 311 is rotatably connected to the output end of the linear module 36 via a rotating shaft. The fourth drive motor 312 is fixedly installed at the output end of the linear module 36, and the output shaft of the fourth drive motor 312 is fixedly connected to the rotating shaft of the grinding head 311. The second nozzle 313 and the third nozzle 314 are both fixedly installed at the output end of the linear module 36. The second nozzle 313 is connected to an external paint supply device via a pipe rotation maintenance mechanism 3 for painting the ground area. The external paint supply device can be a sprayer. The third nozzle 314 is connected to an external air supply device via a pipe for blowing air to clean the ground area. The external air supply device can be an air compressor.

[0062] The output shaft of the fourth drive motor 312 of the repair component rotates, driving the grinding head 311 to rotate. The grinding status is observed through a camera. The grinding position and grinding depth of the grinding head 311 are adjusted through the second drive component. The third nozzle 314 blows air to clean the ground area. After cleaning, wait for a preset time. The second nozzle 313 sprays paint on the ground area, which is conducive to the rapid repair of the paint peeling area.

[0063] like Figure 12 , Figure 13 As shown, the manual centering mechanism 4 includes: casters 41, a rotating block 42, and a distance sensor 43. Multiple casters 41 are fixedly installed on the lower side of the frame 1. The rotating block 42 is rotatably connected to the frame 1. The rotating block 42 has damping when rotating on the frame 1. Multiple distance sensors 43 are arranged in a circular array around the center of the rotating block 42 on the side wall of the rotating block 42. The distance sensors 43 are fixedly installed on the rotating block 42 and electrically connected to an external controller.

[0064] By manually rotating the rotating block 42 to a suitable position, multiple distance sensors 43 measure the position of the inner wall of the tower. By manually moving the frame 1, the distance measured by each distance sensor 43 is within the error range, so that the center of the frame 1 and the center of the tower are roughly coincident. When the caster wheel 41 is locked and the telescopic mechanism is extended, the two vertical moving mechanisms can be moved to the same diameter of the tower, which helps to further improve the stability of the equipment moving on the inner wall of the tower.

[0065] The cleaning fluid supply mechanism 5 includes a water tank 51 and a water pump 52. The water tank 51 is fixedly installed on the frame 1, and the water pump 52 is fixedly installed on the frame 1. The input end of the water pump 52 is connected to the outlet of the water tank 51 through a pipe, and the output end of the water pump 52 is connected to the end of the first pipe 37 away from the slip ring 32 through a pipe.

[0066] The water pump 52 of the cleaning fluid supply mechanism 5 pumps the cleaning fluid in the water tank 51 into the first pipe 37. After passing through the first pipe 37, slip ring 32, second pipe 38, and sleeve 39, the fluid enters the first nozzle 310 and is sprayed out from the first nozzle 310 to clean mold and stains, which is beneficial for subsequent inspection and maintenance.

[0067] A method for using a wind turbine tower maintenance device includes the following steps:

[0068] Step 1: Place the equipment at the bottom of the wind turbine tower that needs maintenance, manually rotate the rotating block 42 to the appropriate position, and use multiple distance sensors 43 to measure the position of the inner wall of the tower. Manually move the frame 1 so that the distance measured by each distance sensor 43 is within the error range, so that the center of the frame 1 and the center of the tower are roughly aligned. Then lock the caster wheel 41.

[0069] Step 2: The output shaft of the first drive motor 22 rotates, driving the first gear 23 to rotate. The rotation of the first gear 23 drives the two racks 26 to move in opposite directions. The movement of the two racks 26 in opposite directions drives the two sliding walls 25 to move in opposite directions. The movement of the two sliding walls 25 in opposite directions drives the vertical moving mechanism to move in opposite directions. The anti-slip wheel 210 is in close contact with the inner wall of the tower. The output shaft of the second drive motor 211 rotates, driving the anti-slip wheel 210 to rotate. The output end of the electric rotary worktable 28 rotates, causing the anti-slip wheel 210 to deflect. The equipment is moved to the top of the tower. The protective frame 213 of the water-blocking component extends out, and the elastic rubber strip 215 is in close contact with the inner wall of the tower.

[0070] Step 3: The second drive component moves the flushing component to the preset position, and the water pump 52 pumps the cleaning liquid in the water tank 51 into the first nozzle 310 of the flushing component. The cleaning liquid is sprayed out from the first nozzle 310 to flush the inner wall of the tower.

[0071] Step 4: The second drive component moves the repair component to the preset position. The repair component grinds, cleans, and paints the inner wall of the tower, performing comprehensive maintenance on the tower from top to bottom.

[0072] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wind turbine tower maintenance device comprising a carriage (1), characterized in that, The rack (1) is provided with a suspension moving mechanism (2) moving in the inner wall of the tower drum, the suspension moving mechanism (2) is provided with a rotating maintenance mechanism (3) for cleaning and repairing the inner wall of the tower drum, the rack (1) is provided with a manual centering mechanism (4) for positioning the center of the tower drum, and the rack (1) is provided with a cleaning liquid supply mechanism (5) for supplying cleaning liquid to the rotating maintenance mechanism (3); The suspension moving mechanism (2) comprises telescopic mechanisms and vertical moving mechanisms, the telescopic mechanisms are installed in the middle side of the rack (1), two vertical moving mechanisms are installed on the two output ends of the telescopic mechanisms respectively, the telescopic mechanism comprises a first driving assembly and reverse telescopic assemblies, the first driving assembly is installed in the middle side of the rack (1), and the reverse telescopic assemblies are symmetrically installed on the first driving assembly, the vertical moving mechanism comprises a moving assembly and a water blocking assembly, the moving assembly is installed on the reverse telescopic assembly, and the water blocking assembly is installed on the moving assembly; The first driving assembly comprises a moving frame (21), and the reverse telescopic assembly comprises a sliding wall (25) which is slidably connected to the moving frame (21); The moving assembly comprises a rotating assembly and a driving assembly, the rotating assembly is installed at one end of the sliding wall (25) away from the moving frame (21), and the driving assembly is installed at one end of the rotating assembly away from the sliding wall (25); The rotating assembly comprises a vertical plate (27), an electric rotating workbench (28) and a rotating plate (29), the vertical plate (27) is fixedly installed at one end of the sliding wall (25) away from the moving frame (21), the electric rotating workbench (28) is fixedly installed on the sliding wall (25), the rotating plate (29) is rotatably connected to the vertical plate (27), one end of the rotating plate (29) is fixedly connected to the output end of the electric rotating workbench (28), and the driving assembly comprises anti-skid wheels (210) and a second driving motor (211); a plurality of anti-skid wheels (210) are rotatably connected to one end of the rotating plate (29) away from the sliding wall (25) through rotating shafts, the second driving motor (211) is fixedly installed on the rotating plate (29), and the output shaft of the second driving motor (211) is fixedly connected to the rotating shafts of two anti-skid wheels (210); The water blocking assembly comprises guide rods (212), a protection frame (213), an electric telescopic rod (214) and an elastic rubber strip (215), a plurality of guide rods (212) are fixedly installed at one end of the vertical plate (27) close to the sliding wall (25), the protection frame (213) is slidably connected to the guide rods (212), the upper side of the protection frame (213) is a chevron-shaped slope, the electric telescopic rod (214) is fixedly installed on the sliding wall (25), the output end of the electric telescopic rod (214) is fixedly connected to the protection frame (213), and the elastic rubber strip (215) is fixedly installed at one end of the protection frame (213) away from the sliding wall (25).

2. The wind turbine tower maintenance device of claim 1, wherein, The first driving assembly further comprises a first driving motor (22) and a first gear (23), a rectangular slot (24) is formed in the middle side of the frame (1), the moving frame (21) is located in the rectangular slot (24), the first driving motor (22) is fixedly installed in the middle side of the moving frame (21), the first gear (23) is fixedly installed on the output shaft of the first driving motor (22), and the reverse telescopic assembly further comprises a rack (26), the rack (26) is fixedly installed on the sliding wall (25), and the rack (26) and the first gear (23) are meshed with each other.

3. The wind turbine tower maintenance device of claim 2, wherein, The rotating maintenance mechanism (3) comprises a second driving assembly, a flushing assembly and a repairing assembly, the second driving assembly is installed on the moving frame (21), the flushing assembly is installed at the output end of the second driving assembly, and the repairing assembly is installed at the output end of the second driving assembly. The second driving assembly comprises a rotating frame (31), a slip ring (32), a second gear (33), a third driving motor (34), a third gear (35) and a linear module (36), the rotating frame (31) is rotatably connected to the moving frame (21), the fixed end of the slip ring (32) is fixedly installed on the moving frame (21), the rotating end of the slip ring (32) is fixedly connected to the rotating frame (31), the second gear (33) is fixedly installed on the rotating end of the slip ring (32), the third driving motor (34) is fixedly installed on the rotating frame (31), the third gear (35) is fixedly installed on the output shaft of the third driving motor (34), the third gear (35) and the second gear (33) are meshed with each other, and the linear module (36) is fixedly installed on the rotating frame (31).

4. The wind turbine tower maintenance device of claim 3, wherein, The flushing assembly comprises a first pipeline (37), a second pipeline (38), a sleeve pipe (39) and a first nozzle (310), one end of the first pipeline (37) is fixedly installed at the input end of the slip ring (32), one end of the second pipeline (38) is fixedly installed at the output end of the slip ring (32), the sleeve pipe (39) is fixedly installed at the output end of the linear module (36), one end of the second pipeline (38) away from the slip ring (32) is slidingly and sealingly connected in the sleeve pipe (39), and a plurality of first nozzles (310) are fixedly installed at the end of the sleeve pipe (39) away from the second pipeline (38).

5. The wind turbine tower maintenance device of claim 4, wherein, The repair assembly comprises a polishing head (311), a fourth driving motor (312), a second nozzle (313) and a third nozzle (314), the polishing head (311) is rotatably connected to the output end of the linear module (36) through a rotating shaft, the fourth driving motor (312) is fixedly installed on the output end of the linear module (36), the output shaft of the fourth driving motor (312) is fixedly connected to the rotating shaft of the polishing head (311), the second nozzle (313) and the third nozzle (314) are both fixedly installed on the output end of the linear module (36), the second nozzle (313) is connected to an external paint supply device through a pipeline for painting the polished part, and the third nozzle (314) is connected to an external air supply device through a pipeline for air blowing cleaning of the polished part.

6. The wind turbine tower maintenance device of claim 5, wherein, The manual centering mechanism (4) comprises universal wheels (41), a rotating block (42) and distance measuring sensors (43), a plurality of universal wheels (41) are fixedly installed on the lower side of the rack (1), the rotating block (42) is rotatably connected to the rack (1), and the rotating block (42) is damped when rotating on the rack (1), a plurality of distance measuring sensors (43) are arranged in a circular array on the side wall of the rotating block (42) with the center of the rotating block (42) as the center, and the distance measuring sensors (43) are fixedly installed on the rotating block (42).

7. A method of using a wind turbine tower maintenance device for the wind turbine tower maintenance device of claim 6, characterized in that, The method comprises the following steps: Step one: place the device at the bottom of the wind power tower to be maintained, manually rotate the rotating block (42) to the appropriate position, measure the position of the inner wall of the tower by the plurality of distance measuring sensors (43), manually move the rack (1) so that the distance measured by each distance measuring sensor (43) is within the error range, align the center of the rack (1) with the center of the tower, and lock the universal wheels (41); Step two: the first driving assembly drives the two vertical moving mechanisms to move closely to the inner wall of the tower, the output shaft of the second driving motor (211) rotates to drive the anti-skid pulley (210) to rotate, the output end of the electric rotating workbench (28) rotates to drive the anti-skid pulley (210) to deflect, and the device is moved to the top of the tower, the protective frame (213) of the water blocking assembly is extended, and the elastic rubber strip (215) closely adheres to the inner wall of the tower; Step three: the second driving assembly drives the flushing assembly to move to the preset position, the water pump (52) pumps the cleaning liquid in the water tank (51) into the first nozzle (310) of the flushing assembly, the cleaning liquid is sprayed from the first nozzle (310) to flush the inner wall of the tower; Step four: the second driving assembly drives the repair assembly to move to the preset position, the repair assembly polishes and paints the inner wall of the tower, and after the tower is repaired in all directions from top to bottom, the maintenance of the tower is completed.

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