A multifunctional wind turbine tower adaptive maintenance device

Abstract

The invention discloses a multifunctional wind turbine tower adaptive maintenance device, comprising a plurality of climbing units; the plurality of climbing units are connected by an automatic clamping mechanism to form a multifunctional wind turbine tower adaptive maintenance device which is annular as a whole; each climbing unit comprises a walking mechanism, an annular frame, a roller brush cleaning mechanism, a steam cleaning mechanism and a spraying mechanism; the multifunctional wind turbine tower adaptive maintenance device can perform horizontal rotation movement and vertical lifting movement relative to the tower through the walking mechanisms of the plurality of climbing units; at the same time, the roller brush cleaning mechanism of each climbing unit can clean dust, rust and oil stains on the outer surface of the tower, the steam cleaning mechanism can steam clean the outer surface of the tower, and the spraying mechanism can paint the outer surface of the tower; the device has the characteristics of good oil stain cleaning effect, low water consumption, low energy consumption and high safety factor.

Description

Technical Field

[0001] The invention relates to the technical field of tower maintenance, and in particular to a multifunctional wind turbine tower adaptive maintenance device. Background Art

[0002] Energy is the cornerstone of social development and progress. Since industrialization, traditional fossil energy such as oil and coal has always dominated the energy consumption structure. With the rapid economic development and the continuous growth of population, traditional fossil energy can no longer meet the needs of human development. After experiencing two oil crises, the development and utilization of clean energy has gradually become a hot topic of concern in various countries. Among many new energy sources, wind energy has become the renewable energy with the largest development volume and the most commercial development value by virtue of its relatively mature technology, relatively small development difficulty, huge reserves, and wide distribution. It plays an important role in adjusting the energy structure, reducing carbon emissions, alleviating the greenhouse effect, and promoting sustainable development. With the proposal of the national "low-carbon new energy" development strategy, the development and utilization of energy in China has officially become an indispensable part of the energy structure. As electromechanical equipment, wind turbines must be regularly maintained and repaired.

[0003] According to industry practice, wind turbines need to be maintained and repaired at a higher frequency after 3-5 years of operation. The workload generated is very huge, and gradually enters the peak period of maintenance or repair. During this critical period, the development and design of corresponding maintenance and repair equipment for wind turbines is more important. At the same time, a matching and reasonable maintenance plan is needed to ensure the smooth and orderly progress of maintenance work, thereby providing technical guarantee for the efficient operation of my country's wind power generation equipment. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a multifunctional wind turbine tower adaptive maintenance device, through which dirt such as dust, rust and oil on the outer surface of the tower can be cleaned, and the device has the characteristics of good oil cleaning effect, low water consumption, low energy consumption and high safety factor.

[0005] The technical solution adopted by the present invention is:

[0006] A multifunctional wind turbine tower adaptive maintenance device, the multifunctional wind turbine tower adaptive maintenance device comprising a plurality of climbing units; the plurality of climbing units are connected by an automatic clamping mechanism to form a multifunctional wind turbine tower adaptive maintenance device which is annular as a whole; the automatic clamping mechanism can automatically adjust the spacing between the climbing units to ensure that the plurality of climbing units of the multifunctional wind turbine tower adaptive maintenance device are always in contact with the outer wall of the tower; each climbing unit comprises a walking mechanism, an annular frame, a roller brush cleaning mechanism, a steam cleaning mechanism and a spraying mechanism; the annular frame is an arc-shaped frame structure, the head and tail ends of which are connected by an automatic clamping mechanism The multifunctional wind turbine tower adaptive maintenance device is connected to the annular frame of another climbing unit, a walking mechanism is installed in the middle of the inner side of the annular frame, a spraying mechanism is installed on the top of the middle of the annular frame, and a roller brush cleaning mechanism and a steam cleaning mechanism are respectively installed on the inner sides of the head and tail ends of the annular frame; the multifunctional wind turbine tower adaptive maintenance device can perform horizontal rotation movement and vertical lifting movement relative to the tower through the walking mechanisms of several climbing units; while performing horizontal rotation movement, the roller brush cleaning mechanism of each climbing unit can clean the dust, rust and oil on the outer surface of the tower, the steam cleaning mechanism of each climbing unit can steam clean the outer surface of the tower, and the spraying mechanism of each climbing unit can paint the outer surface of the tower.

[0007] Furthermore, the automatic clamping mechanism includes a driving frame, a transmission assembly, a screw, a guide tube assembly and a buffer frame; one end of the screw is rotatably mounted on the driving frame through a bearing, and the driving frame is hinged to the annular frame; the transmission assembly is mounted on the driving frame and the screw, which can drive the screw to rotate relative to the driving frame, and includes a motor, a belt, a small pulley and a large pulley, the motor is fixedly mounted on the driving frame, the small pulley is fixedly mounted on the output shaft of the motor, the large pulley is fixedly sleeved on the screw, and the small pulley and the large pulley are connected Connected by belt drive; the guide tube assembly includes a guide tube, a guide block, a guide nut and a spring. The guide tube is a tube structure with a hollow interior and an open side. The open end of the guide tube is fixedly installed with a buffer frame. The guide tube and the buffer frame are both movably mounted on the screw. The guide nut and the spring are located inside the guide tube. The guide nut and the spring are mounted on the screw, and the guide nut is threadedly connected to the screw. The spring is located between the guide nut and the sealed end of the guide tube. A guide groove is also provided on the outer wall of the guide tube, and the guide block passes through the guide groove and is fixedly connected to the guide nut.

[0008] Furthermore, a travel switch is installed on the outside of the guide tube through a travel switch seat. The travel switch is arranged on both sides of the guide groove, and the travel switch can contact the guide block. The travel switch cooperates with the guide block to detect the travel of the guide tube.

[0009] Furthermore, the walking mechanism includes a chassis, a steering mechanism and a driving mechanism; the chassis adopts a two-bridge four-wheel structure, the front axle is equipped with two driven wheels, the rear axle is equipped with two driving wheels, and the chassis is fixedly connected to the annular frame through a connecting column; the driving mechanism is arranged on the rear side of the chassis, and includes a driving motor, a gear box, a transmission gear and a driving gear, the driving motor is fixedly installed on the rear side of the chassis through the gear box, the output shaft of the driving motor is inserted into the gear box, the transmission gear is installed outside the gear box, the transmission gear is connected to the driving motor through the gear box, the driving gear is fixedly sleeved on the rear axle, and the driving gear is meshed with the transmission gear; the steering mechanism is installed at the front axle and the driven wheels, and the driven wheels are respectively connected to the front axle and the driven wheels. The bridge is hinged, and the steering mechanism achieves steering by generating an angular offset between the driven wheel and the chassis; the steering mechanism includes a connecting rod, a steering motor, a screw, a slider and a steering rod, the connecting rod is located between the two driven wheels, and the two ends of the connecting rod are respectively hinged to the two driven wheels, and the chassis is provided with a mounting groove for matching the steering motor and the screw, the steering motor is fixedly installed in the mounting groove, the output end of the steering motor is fixedly connected to one end of the screw, and the other end of the screw is rotatably connected to the inner wall of the mounting groove, the slider is located in the mounting groove, the slider is sleeved on the screw and is threadedly connected to the screw, and the slider can move in the mounting groove by rotating the screw, one end of the steering rod is hinged to the slider, and the other end is hinged to the driven wheel.

[0010] Furthermore, the walking mechanism includes a chassis, a steering mechanism and a driving mechanism; the chassis adopts a two-bridge four-wheel structure, the front axle is equipped with two driven wheels, the rear axle is equipped with two driving wheels, the middle of the chassis is connected to a turntable through a connecting column, and the chassis is rotatably connected to the annular frame through the turntable; the driving mechanism is arranged on the rear side of the chassis, and includes a driving motor, a gear box, a transmission gear and a driving gear, the driving motor is fixedly installed on the rear side of the chassis through the gear box, the output shaft of the driving motor is inserted into the gear box, the transmission gear is installed outside the gear box, the transmission gear is connected to the driving motor through the gear box, the driving gear is fixedly sleeved on the rear axle, and the driving gear is meshed with the transmission gear; the The steering mechanism is installed on the annular frame, which is connected to the turntable by transmission. The steering mechanism realizes steering by driving the chassis to rotate as a whole; the steering mechanism includes a steering motor, a steering belt, a small steering pulley, a large steering pulley, a worm bearing seat, a worm and a turbine. Both ends of the worm are rotatably installed on the annular frame through the worm bearing seat, one end of the worm passes through the worm bearing seat and is fixedly installed on the large steering pulley, the steering motor is fixedly installed on the annular frame, and the output end of the steering motor is fixedly mounted on the small steering pulley. The small steering pulley and the large steering pulley are connected by the steering belt transmission. The turbine is fixedly installed on the turntable, and the turbine passes through the annular frame and meshes with the worm.

[0011] Furthermore, the roller brush cleaning mechanism and the steam cleaning mechanism are respectively installed on the inner sides of the head and tail ends of the annular frame through the roller brush mounting frame and the steam mounting frame, and can be fitted with the outer wall of the tower; the roller brush mounting frame and the steam mounting frame have the same structure and both include a rectangular mounting frame, a pneumatic cylinder, an articulated angle code and a connecting pin, one end of the rectangular mounting frame is hinged to the annular frame through a connecting pin, and the other end is hinged to the roller brush cleaning mechanism or the steam cleaning mechanism through a articulated angle code, the cylinder body of the pneumatic cylinder is installed in the middle of the rectangular mounting frame, and is hinged to the rectangular mounting frame through a connecting pin, and the pneumatic rod of the pneumatic cylinder is hinged to the annular frame through a connecting pin; the pneumatic cylinder drives the rectangular mounting frame to swing relative to the annular frame through the extension and retraction of its pneumatic rod, so that the roller brush cleaning mechanism or the steam cleaning mechanism fits with the outer wall of the tower.

[0012] Furthermore, the roller brush cleaning mechanism includes a roller brush motor, a roller brush, a roller brush mounting box, a spray pipe and a sewage pipe; both ends of the roller brush are rotatably installed in the roller brush mounting box through a bearing seat; the roller brush mounting box is a rectangular box body, which is hinged to the roller brush mounting frame through a hinged angle code, and is provided with a window for matching the roller brush part exposed to the outside of the roller brush mounting box, and universal wheels are installed on both sides of the outside through universal wheel angle codes; the roller brush motor is fixedly installed at one end of the outside of the roller brush mounting box, and its output shaft passes through the roller brush mounting box and is transmission-connected to one end of the roller brush through a coupling; the spray pipe is inserted into the roller brush mounting box from the other end of the outside of the roller brush mounting box, and is arranged parallel to the roller brush, and is provided with a plurality of water spray holes, which can be connected to a clean water source through a pipeline, and spray water to the roller brush to clean the roller brush; the sewage pipe is inserted into the roller brush mounting box from the other end of the outside of the roller brush mounting box, and can be connected to the wastewater collection device pipeline, and discharge the sewage in the roller brush mounting box.

[0013] Furthermore, the steam cleaning mechanism includes a steam pipe, a steam pipe mounting box and a steam generator; the steam pipe is fixedly mounted in the steam pipe mounting box, and is provided with a plurality of nozzles exposed outside the steam pipe mounting box; one end of the steam pipe is sealed by a fixing screw, and the other end thereof passes through the steam pipe mounting box and is connected to the steam generator through a pipeline; the steam pipe mounting box is hinged to the steam mounting frame through a hinged angle bracket, and universal wheels are installed on both sides of the outside through universal wheel angle brackets.

[0014] Furthermore, the spraying mechanism is installed on the top in the middle of the annular frame through a spraying mounting frame, and can fit with the outer wall of the tower; the spraying mounting frame is triangular, and includes a hypotenuse frame, a base and a pneumatic cylinder; the base is fixedly installed on the top in the middle of the annular frame; one end of the hypotenuse frame is inserted into one side of the base, and is hinged to the base through a connecting pin, and the other end is hinged to the spraying mechanism through a hinged angle code; the cylinder body of the pneumatic cylinder is installed on the other side of the base, and is hinged to the base through a connecting pin, and the pneumatic rod of the pneumatic cylinder is hinged to the hypotenuse frame through a hinged angle code; the pneumatic cylinder drives the hypotenuse frame to swing relative to the annular frame through the extension and retraction of its pneumatic rod, so that the spraying mechanism fits with the outer wall of the tower.

[0015] Furthermore, the spraying mechanism includes a wind shield and a spray head; the wind shield is a box structure with an opening on one side, the opening side of which faces the outer wall of the tower, and a plurality of spray heads arranged in a line are installed on the other side, and the plurality of spray heads arranged in a line are connected to the paint spraying equipment through pipelines; universal wheels are also installed on the end faces on both sides of the outside of the wind shield through universal wheel angle brackets.

[0016] The beneficial effects of the present invention are:

[0017] The multifunctional wind turbine tower adaptive maintenance device can perform horizontal rotation and vertical lifting relative to the tower through the walking mechanism of several climbing units. The walking mechanism is powered by lithium batteries, so that the design has the characteristics of high efficiency and no pollution, high safety factor and low investment cost. At the same time, the roller brush cleaning mechanism of each climbing unit can clean the dust, rust and oil on the outer surface of the tower. The working surface of the roller brush cleaning mechanism is a circular surface, which avoids the problem of uneven cleaning ability of the disc brush. At the same time, the roller brush is in line contact with the outer wall of the tower, which has a higher fit than the disc brush and has a better cleaning effect. The steam cleaning mechanism can steam clean the outer surface of the tower. The steam cleaning mechanism has the characteristics of good oil cleaning effect, low water consumption, low energy consumption and high safety factor. The spraying mechanism can spray paint on the outer surface of the tower. The spraying mechanism can spray the outer wall of the tower where it needs to be repaired when cleaning the tower. Since the outer wall of the tower is an arc, the spraying method is better than the ordinary roller brush. The multifunctional wind turbine tower adaptive maintenance device can change the diameter according to the change of tower diameter through an automatic clamping mechanism, and has a certain buffer kinetic energy, so that the device can successfully complete the relevant operations on the tower. At the same time, it has the characteristics of good oil cleaning effect, low water consumption, low energy consumption and high safety factor.

[0018] The multifunctional wind turbine tower adaptive maintenance device has the following advantages:

[0019] 1. After investigating wind turbine tower climbing equipment and wall-climbing robots at home and abroad, it was concluded that the annular clamping method has a higher safety factor and greater load capacity as the main structure of wind turbine tower maintenance equipment in combination with actual operating conditions;

[0020] 2. After comparing various climbing operation paths, according to the functional requirements and work efficiency requirements of wind turbine tower maintenance equipment, it is concluded that spiral motion has higher operation efficiency and lower energy consumption;

[0021] 3. After analyzing the types of dirt on the wind turbine tower wall, a cleaning method based on roller brush cleaning and supplemented by steam cleaning is proposed, so that the tower cleaning efficiency is higher and the cleaning effect is better;

[0022] 4. After investigating mechanical equipment in multiple industries, we independently designed an automatic clamping mechanical structure, which solved the problem of clamping force control and also had buffering and locking functions;

[0023] 5. In response to the changes in the tower's conical and curved surfaces, we independently designed a roller brush cleaning mechanism, steam cleaning mechanism and spraying mechanism that can automatically adapt to the changes in the wall surface, which is more suitable for tower maintenance work;

[0024] 6. Aiming at the problem of high water consumption in cleaning the wall of wind turbine tower, this design proposes wastewater recycling, filtration and reuse, so that the cleaning fluid can be recycled and the load of the whole machine can be reduced;

[0025] 7. This equipment uses a large number of commercially available components such as reducers, reduction motors, steam generators, etc., which can greatly reduce the difficulty of designing and manufacturing the equipment;

[0026] 8. This design conducts stress analysis on multiple structures of the equipment, and performs lightweight design on each component to fully reduce the material usage of the components, thereby achieving lightweight design;

[0027] 9. Most of the non-standard parts of this equipment are manufactured by welding and bolting according to national standard profiles, which greatly reduces the manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0029] Figure 2 , Figure 3 It is a schematic diagram of the connection between the climbing units of the present invention;

[0030] Figure 4 It is a structural schematic diagram of the automatic clamping mechanism of the present invention;

[0031] Figure 5 , Figure 6 It is a structural schematic diagram of the walking mechanism mode 1 of the present invention;

[0032] Figure 7 , Figure 8 It is a structural schematic diagram of the walking mechanism mode 2 of the present invention;

[0033] Fig. 9 It is a structural schematic diagram of the roller brush cleaning mechanism of the present invention;

[0034] Fig.10 It is a structural schematic diagram of the roller brush mounting frame of the present invention;

[0035] Fig.11 It is a structural schematic diagram of the steam cleaning mechanism of the present invention;

[0036] Fig.12 It is a structural schematic diagram of the steam installation rack of the present invention;

[0037] Fig.13 It is a structural schematic diagram of the spraying mechanism and the spraying mounting frame of the present invention;

[0038] Figure 1 —13, 1—climbing unit, 2—automatic clamping mechanism, 3—tower, 4—travel mechanism, 5—ring frame, 6—roller brush cleaning mechanism, 7—steam cleaning mechanism, 8—spraying mechanism, 9—driving frame, 10—screw, 11—buffer frame, 12—motor, 13—belt, 14—small pulley, 15—large pulley, 16—guide tube, 17—guide block, 18—guide nut, 19—spring, 20—guide groove, 21—travel switch, 22—chassis, 23—driven wheel, 24—driving wheel, 25—connecting column, 26—driving motor, 27—gear box, 28—transmission gear, 29—driving gear, 30—connecting rod, 31—steering motor, 32—screw, 33—slider, 34—steering rod, 35—installation Groove, 36—turntable, 37—steering motor, 38—steering belt, 39—steering small pulley, 40—steering large pulley, 41—worm bearing seat, 42—worm, 43—turbine, 44—roller brush mounting frame, 45—steam mounting frame, 46—rectangular mounting frame, 47—pneumatic cylinder, 48—hinge angle code, 49—connecting pin, 50—roller brush motor, 51—roller brush, 52—roller brush mounting box, 53—spray pipe, 54—drain pipe, 55—bearing seat, 56—universal wheel angle code, 57—universal wheel, 58—coupling, 59—steam pipe, 60—steam pipe mounting box, 61—spray head, 62—fixing screw, 63—spraying mounting frame, 64—bevel frame, 65—base, 66—pneumatic cylinder, 67—wind shield, 68—spray head. DETAILED DESCRIPTION

[0039] The following will be combined with the accompanying drawings of the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0040] like Figure 1 As shown, the present embodiment discloses a multifunctional wind turbine tower adaptive maintenance device, which includes three climbing units 1; the three climbing units 1 are connected by an automatic clamping mechanism 2 to form a multifunctional wind turbine tower adaptive maintenance device which is annular as a whole, and the automatic clamping mechanism 2 can automatically adjust the distance between the climbing units 1 to ensure that the multiple climbing units 1 of the multifunctional wind turbine tower adaptive maintenance device are always in contact with the outer wall of the tower 3.

[0041] like Figure 2 As shown in FIG. 3 , each climbing unit 1 includes a walking mechanism 4, an annular frame 5, a roller brush cleaning mechanism 6, a steam cleaning mechanism 7 and a spraying mechanism 8; the annular frame 5 is an arc-shaped frame structure, and the front and rear ends of the annular frame 5 are connected to the annular frame 5 of another climbing unit 1 through an automatic clamping mechanism 2, the walking mechanism 4 is installed at the middle of the inner side of the annular frame 5, the spraying mechanism 8 is installed at the top of the middle of the annular frame 5, and the roller brush cleaning mechanism 6 and the steam cleaning mechanism 7 are installed at the inner side of the front and rear ends of the annular frame 5. The multifunctional wind turbine tower adaptive maintenance device can perform horizontal rotation and vertical lifting relative to the tower 3 through the walking mechanisms 4 of the three climbing units 1; while performing horizontal rotation, the roller brush cleaning mechanism 6 of each climbing unit 1 can clean the dust, rust and oil on the outer surface of the tower 3, the steam cleaning mechanism 7 of each climbing unit 1 can steam clean the outer surface of the tower 3, and the spraying mechanism 8 of each climbing unit 1 can spray paint on the outer surface of the tower 3.

[0042] The specific structure of the automatic clamping mechanism 2 is also provided in this embodiment. Figure 3 —4 shows:

[0043] Specifically, the automatic clamping mechanism 2 includes a driving frame 9, a transmission assembly, a screw 10, a guide tube assembly and a buffer frame 11. One end of the screw 10 is rotatably mounted on the driving frame 9 through a bearing, and the driving frame 9 is hinged to a ring frame 5 of a climbing unit 1. The transmission assembly is mounted on the driving frame 9 and the screw 10, and the transmission assembly can drive the screw 10 to rotate relative to the driving frame 9. The transmission assembly includes a motor 12, a belt 13, a small pulley 14 and a large pulley 15. The motor 12 is fixedly mounted on the driving frame 9, the small pulley 14 is fixedly mounted on the output shaft of the motor 12, and the large pulley 15 is fixedly sleeved on the screw 10. The small pulley 14 and the large pulley 15 are connected by a belt 13 transmission. The guide tube assembly includes a guide tube 16, a guide block 17, a guide nut 18 and a spring 19. The guide tube 16 is a tube structure with a hollow interior and an open side. The open end of the guide tube 16 is fixedly installed with a buffer frame 11. The guide tube 16 and the buffer frame 11 are both movably mounted on the screw 10. The buffer frame 11 is hinged to the annular frame 5 of another climbing unit 1. The guide nut 18 and the spring 19 are located inside the guide tube 16. The guide nut 18 and the spring 19 are mounted on the screw 10, and the guide nut 18 is threadedly connected to the screw 10. The spring 19 is located between the guide nut 18 and the sealed end of the guide tube 16. One end of the spring 19 is fixedly connected to the inner wall of the guide tube 16, and the other end thereof is fixedly connected to the guide nut 18. A guide groove 20 is also provided on the outer wall of the guide tube 16, and the guide block 17 passes through the guide groove 20 and is fixedly connected to the guide nut 18.

[0044] The working principle of the automatic clamping mechanism 2 is:

[0045] First, the motor 12 of the transmission assembly rotates, and the output shaft of the motor 12 drives the small pulley 14 to rotate, and the small pulley 14 drives the large pulley 15 to rotate synchronously through the belt 13; since the large pulley 15 is fixedly sleeved on the screw 10, and one end of the screw 10 is rotatably mounted on the driving frame 9 through a bearing, the large pulley 15 drives the screw 10 to rotate synchronously; since the guide nut 18 is threadedly connected to the screw 10, and the guide nut 18 is restricted by the guide block 17 and the guide groove 20 on the guide tube 16, the guide nut 18 is inserted into the guide tube 16 through the screw 10 rotates forward or reversely to move left and right; while the guide nut 18 moves left and right, it drives the guide tube 16 to move left and right as a whole through the spring 19. While the guide tube 16 moves left and right as a whole, since the driving frame 9 is hinged to the annular frame 5 of one climbing unit 1, and the buffer frame 11 is hinged to the annular frame 5 of another climbing unit 1, the distance between the climbing units 1 can be automatically adjusted to ensure that the multiple climbing units 1 of the multifunctional wind turbine tower adaptive maintenance device are always in contact with the outer wall of the tower 3.

[0046] Further, as a preferred solution of this embodiment, Figure 4 As shown, the guide tube 16 is also provided with a travel switch 21 through a travel switch 21 seat. The travel switch 21 is provided on both sides of the guide groove 20, and the travel switch 21 can contact the guide block 17. The travel switch 21 cooperates with the guide block 17 to detect the travel of the guide tube 16. By adding the travel switch 21, a maximum displacement signal can be formed when the motor 12 automatically adjusts the spacing between the climbing units 1 and the climbing units 1, and the operation of the motor 12 can be better controlled by the maximum displacement signal.

[0047] The present embodiment also provides the specific structures of the traveling mechanism 4 , the annular frame 5 , the roller brush cleaning mechanism 6 , the steam cleaning mechanism 7 and the spraying mechanism 8 of the climbing unit 1 .

[0048] For the walking mechanism 4, two methods are provided in this embodiment:

[0049] Method 1, such as Figure 5 As shown in FIG. 6 , the walking mechanism 4 includes a chassis 22, a steering mechanism and a driving mechanism. The chassis 22 adopts a two-bridge four-wheel structure, the front axle is equipped with two driven wheels 23, the rear axle is equipped with two driving wheels 24, and the chassis 22 is fixedly connected to the annular frame 5 through a connecting column 25. The driving mechanism is arranged at the rear side of the chassis 22, and the driving mechanism includes a driving motor 26, a gear box 27, a transmission gear 28 and a driving gear 29. The driving motor 26 is fixedly installed at the rear side of the chassis 22 through the gear box 27, the output shaft of the driving motor 26 is inserted into the gear box 27, the transmission gear 28 is installed outside the gear box 27, the transmission gear 28 is connected to the driving motor 26 through the gear box 27, the driving gear 29 is fixedly sleeved on the rear axle, and the driving gear 29 is meshed with the transmission gear 28.

[0050] The steering mechanism is installed at the front axle and the driven wheels 23 . The driven wheels 23 are respectively hinged to the front axle. The steering mechanism realizes steering by generating an angle offset between the driven wheels 23 and the chassis 22 . The steering mechanism includes a connecting rod 30, a steering motor 31, a screw 32, a slider 33 and a steering rod 34. The connecting rod 30 is located between the two driven wheels 23. The two ends of the connecting rod 30 are respectively hinged to the two driven wheels 23. The chassis 22 is provided with a mounting groove 35 for matching the steering motor 31 and the screw 32. The steering motor 31 is fixedly installed in the mounting groove 35. The output end of the steering motor 31 is fixedly connected to one end of the screw 32, and the other end of the screw 32 is rotatably connected to the inner wall of the mounting groove 35. The slider 33 is located in the mounting groove 35. The slider 33 is sleeved on the screw 32 and is threadedly connected to the screw 32. The slider 33 can move in the mounting groove 35 by rotating the screw 32. One end of the steering rod 34 is hinged to the slider 33, and the other end is hinged to the driven wheel 23.

[0051] Method 2, such as Figure 7As shown in FIG. 8 , the walking mechanism 4 includes a chassis 22, a steering mechanism and a driving mechanism. The chassis 22 adopts a two-bridge four-wheel structure, the front axle is equipped with two driven wheels 23, the rear axle is equipped with two driving wheels 24, the middle of the chassis 22 is connected to a turntable 36 through a connecting column 25, and the chassis 22 is rotatably connected to the annular frame 5 through the turntable 36. The driving mechanism is arranged at the rear side of the chassis 22, and the driving mechanism includes a driving motor 26, a gear box 27, a transmission gear 28 and a driving gear 29. The driving motor 26 is fixedly installed at the rear side of the chassis 22 through the gear box 27, the output shaft of the driving motor 26 is inserted into the gear box 27, the transmission gear 28 is installed outside the gear box 27, the transmission gear 28 is connected to the driving motor 26 through the gear box 27, the driving gear 29 is fixedly sleeved on the rear axle, and the driving gear 29 is meshed with the transmission gear 28.

[0052] The steering mechanism is mounted on the annular frame 5, and is connected to the turntable 36 by transmission. The steering mechanism realizes steering by driving the chassis 22 to rotate as a whole. The steering mechanism includes a steering motor 37, a steering belt 38, a steering small pulley 39, a steering large pulley 40, a worm bearing seat 41, a worm 42 and a turbine 43. Both ends of the worm 42 are rotatably mounted on the annular frame 5 through the worm bearing seat 41. One end of the worm 42 passes through the worm bearing seat 41 and is fixedly mounted on the steering large pulley 40. The steering motor 37 is fixedly mounted on the annular frame 5. The output end of the steering motor 37 is fixedly mounted on the steering small pulley 39. The steering small pulley 39 is connected to the steering large pulley 40 by transmission through the steering belt 38. The turbine 43 is fixedly mounted on the turntable 36. The turbine 43 passes through the annular frame 5 and meshes with the worm 42.

[0053] The driving principle of the walking mechanism 4 is the same, that is, the driving motor 26 drives the driving gear 29 to rotate, and the driving gear 29 drives the transmission gear 28 and the rear axle to rotate, so that the two driving wheels 24 installed on the rear axle rotate to achieve walking. For the steering mechanism, mode 1 and mode 2 use two different modes to achieve steering: mode 1: the steering motor 31 drives the screw 32 to rotate, because the slider 33 is mounted on the screw 32 and is threadedly connected with the screw 32, and the slider 33 is limited by the installation groove 35, so that the slider 33 can move in the screw 32 and the installation groove 35, and then drive the steering rod 34 to pull any driven wheel 23; because the two ends of the connecting rod 30 are respectively hinged with the two driven wheels 23, the connecting rod 30, the two driven wheels 23, and the front axle form a parallelogram structure, so that the two driven wheels 23 can be synchronously turned. Method 2: The steering motor 37 rotates the small steering pulley 39, and the small steering pulley 39 drives the large steering pulley 40 to rotate synchronously through the steering belt 38, and the large steering pulley 40 drives the worm 42 to rotate; the turbine 43 fixedly mounted on the turntable 36 is engaged with the worm 42 to achieve steering. Among them, the steering method of method 1 has good stability and high rigidity, but the deflection angle generally cannot be greater than 30 degrees, and the flexibility is relatively poor; while the steering method of method 2 can realize the 360° rotation of the entire walking mechanism 4, so that the climbing unit 1 can not only climb in a spiral but also move along the axial direction and the circumferential direction, with high flexibility, and can reach the working area in the shortest distance.

[0054] like Fig. 9 As shown, the roller brush cleaning mechanism 6 includes a roller brush motor 50, a roller brush 51, a roller brush installation box 52, a spray pipe 53 and a sewage pipe 54. The two ends of the roller brush 51 are rotatably installed in the roller brush installation box 52 through a bearing seat 55. The roller brush installation box 52 is a rectangular box body, and the roller brush installation box 52 is hinged to the roller brush installation frame 44 through a hinge angle code 48. The roller brush installation box 52 is provided with a window for the roller brush 51 to be partially exposed outside the roller brush installation box 52. Universal wheels 57 are installed on both sides of the roller brush installation box 52 through universal wheel angle codes 56. The roller brush motor 50 is fixedly installed at one end of the roller brush installation box 52, and the output shaft of the roller brush motor 50 passes through the roller brush installation box 52 and is transmission-connected to one end of the roller brush 51 through a coupling 58. The spray pipe 53 is inserted into the roller brush installation box 52 from the other end outside the roller brush installation box 52. The spray pipe 53 is arranged in parallel with the roller brush 51. The spray pipe 53 is provided with a plurality of water spray holes. The spray pipe 53 can be connected to a clean water source through a pipeline and spray water to the roller brush 51 to clean the roller brush 51. The sewage pipe 54 is inserted into the roller brush installation box 52 from the other end outside the roller brush installation box 52. The sewage pipe 54 can be connected to the pipeline of the wastewater collection device and discharge the sewage in the roller brush installation box 52.

[0055] like Fig.10As shown, the roller brush cleaning mechanism 6 is installed on the inner side of the tail end of the annular frame 5 through a roller brush mounting frame 44, and can fit with the outer wall of the tower 3. The roller brush mounting frame 44 includes a rectangular mounting frame 46, a pneumatic cylinder 47, a hinge angle code 48 and a connecting pin 49. One end of the rectangular mounting frame 46 is hinged to the annular frame 5 through a connecting pin 49, and the other end of the rectangular mounting frame 46 is hinged to the roller brush cleaning mechanism 6 through a hinge angle code 48. The cylinder body of the pneumatic cylinder 47 is installed in the middle of the rectangular mounting frame 46, and is hinged to the rectangular mounting frame 46 through a connecting pin 49, and the pneumatic rod of the pneumatic cylinder 47 is hinged to the annular frame 5 through a connecting pin 49. The pneumatic cylinder 47 drives the rectangular mounting frame 46 to swing relative to the annular frame 5 through the extension and contraction of the pneumatic rod, so that the roller brush cleaning mechanism 6 fits with the outer wall of the tower 3.

[0056] The working principle of the roller brush cleaning mechanism 6 is:

[0057] First, the pneumatic cylinder 47 of the roller brush mounting frame 44 works, and the pneumatic rod of the pneumatic cylinder 47 extends to drive the rectangular mounting frame 46 to swing toward the outer wall of the tower 3 relative to the annular frame 5, so that the roller brush cleaning mechanism 6 is in contact with the outer wall of the tower 3; then the roller brush motor 50 works, and the output shaft of the roller brush motor 50 drives the roller brush 51 to rotate relative to the roller brush mounting box 52 through the coupling 58; because the roller brush 51 is exposed to the outside of the roller brush mounting box 52 through the window of the roller brush mounting box 52, it can clean the dust, rust and oil on the outer surface of the tower 3. During the process of cleaning the outer surface of the tower 3 by the roller brush cleaning mechanism 6, the spray pipe 53 arranged parallel to the roller brush 51 always sprays water to the roller brush 51 through the water spray holes thereon to clean the roller brush 51. Since the roller brush cleaning mechanism 6 is in a vertical state as a whole, the end of the drain pipe 54 inserted into the roller brush installation box 52 is located at the bottom, and thus a sewage collection bin can be formed in the roller brush installation box 52. The sewage is pumped out to the wastewater collection device through the drain pipe 54 for recovery, filtration, and reuse. Since the roller brush cleaning mechanism 6 completes the cleaning process of the tower 3 surface when the multifunctional wind turbine tower adaptive maintenance device is in horizontal rotation, four universal wheels 57 are installed on both sides of the outside of the roller brush installation box 52 through universal wheel angle codes 56. The roller brush cleaning mechanism 6 contacts the outer wall of the tower 3 through the universal wheels 57, so that the multifunctional wind turbine tower adaptive maintenance device can perform horizontal rotation while the distance between the roller brush installation box 52 and the tower 3 can be adjusted through the universal wheel angle codes 56, thereby adjusting the force between the roller brush 51 and the outer wall of the tower 3.

[0058] like Fig.11As shown, the steam cleaning mechanism 7 includes a steam pipe 59, a steam pipe installation box 60 and a steam generator. The steam pipe 59 is fixedly installed in the steam pipe installation box 60. The steam pipe 59 is provided with a plurality of nozzles 61 exposed outside the steam pipe installation box 60. One end of the steam pipe 59 is blocked by a fixing screw 62, and the other end thereof passes through the steam pipe installation box 60 and is connected to the steam generator through a pipeline. The steam pipe installation box 60 is hinged to the steam installation frame 45 through an articulated angle bracket 48, and universal wheels 57 are installed on both sides of the outside of the steam pipe installation box 60 through universal wheel angle brackets 56. Fig.12 As shown, the steam cleaning mechanism 7 is installed on the inner side of the head end of the annular frame 5 through a steam mounting frame 45, and can fit with the outer wall of the tower 3. The structure of the steam mounting frame 45 is the same as that of the roller brush mounting frame 44, and both include a rectangular mounting frame 46, a pneumatic cylinder 47, a hinge angle bracket 48 and a connecting pin 49. The pneumatic cylinder 47 drives the rectangular mounting frame 46 to swing relative to the annular frame 5 through the telescopic movement of its pneumatic rod, so that the steam cleaning mechanism 7 fits with the outer wall of the tower 3.

[0059] The working principle of the steam cleaning mechanism 7 is:

[0060] First, the pneumatic cylinder 47 of the steam mounting frame 45 works, and the pneumatic rod of the pneumatic cylinder 47 extends, thereby driving the rectangular mounting frame 46 to swing toward the outer wall of the tower 3 relative to the annular frame 5, so that the steam cleaning mechanism 7 fits the outer wall of the tower 3; then the steam generator of the steam cleaning mechanism 7 works, and it delivers steam to the steam pipe 59 through the pipeline, and then the nozzle 61 on the steam pipe 59 sprays it toward the outer wall of the tower 3; when cleaning is completed or steam cleaning is not needed temporarily, the pneumatic rod of the pneumatic cylinder 47 contracts, thereby driving the rectangular mounting frame 46 to move closer to the annular frame 5 relative to the annular frame 5, and the steam cleaning mechanism 7 is separated from the outer wall of the tower 3. Since the steam cleaning mechanism 7 completes the cleaning process of the tower 3 surface when the multifunctional wind turbine tower adaptive maintenance device is in horizontal rotation, four universal wheels 57 are installed on both sides of the outside of the steam pipe mounting box 60 through universal wheel angle codes 56. The steam cleaning mechanism 7 contacts the outer wall of the tower 3 through the universal wheels 57, so that the multifunctional wind turbine tower adaptive maintenance device can perform horizontal rotation while the distance between the nozzle 61 on the steam pipe 59 and the tower 3 can be adjusted through the universal wheel angle codes 56.

[0061] like Fig.13As shown, the spraying mechanism 8 is installed on the top of the middle of the annular frame 5 through the spraying mounting frame 63, and can fit with the outer wall of the tower 3. The spraying mounting frame 63 is triangular, and the spraying mounting frame 63 includes a bevel frame 64, a base 65 and a pneumatic cylinder 66. The base 65 is fixedly installed on the top of the middle of the annular frame 5. One end of the bevel frame 64 is inserted into one side of the base 65, and is hinged to the base 65 through a connecting pin 49, and the other end of the bevel frame 64 is hinged to the spraying mechanism 8 through a hinge angle code 48. The cylinder body of the pneumatic cylinder 66 is installed on the other side of the base 65, and is hinged to the base 65 through a connecting pin 49, and the pneumatic rod of the pneumatic cylinder 66 is hinged to the bevel frame 64 through a hinge angle code 48. The pneumatic cylinder 66 drives the bevel frame 64 to swing relative to the annular frame 5 through the telescopic expansion of its pneumatic rod, so that the spraying mechanism 8 fits with the outer wall of the tower 3. The spraying mechanism 8 includes a wind shield 67 and a spray head 68. The wind shield 67 is a box structure with one side open, the open side of the wind shield 67 faces the outer wall of the tower 3, and three spray heads 68 arranged in a line are installed on the other side of the wind shield 67. The three spray heads 68 arranged in a line are connected to the painting equipment through pipelines. Universal wheels 57 are also installed on the end surfaces of both sides of the wind shield 67 through universal wheel angle brackets 56.

[0062] The working principle of the spraying mechanism 8 is:

[0063] First, the pneumatic cylinder 66 of the spray mounting frame 63 works, and the pneumatic rod of the pneumatic cylinder 66 contracts, thereby driving the bevel frame 64 to swing toward the outer wall of the tower 3 relative to the annular frame 5, so that the spray mechanism 8 fits the outer wall of the tower 3; then the paint spraying equipment works, and it sprays paint toward the outer wall of the tower 3 in the wind shield 67 through the nozzle 68, and sprays the places on the outer wall of the tower 3 that need to be repaired; when the spraying operation is completed or the spraying operation is not needed temporarily, the pneumatic rod of the pneumatic cylinder 66 extends, thereby driving the bevel frame 64 to swing outward relative to the annular frame 5, so that the spray mechanism 8 is separated from the outer wall of the tower 3. Since the spraying operation of the spraying mechanism 8 on the outer surface of the tower 3 is completed when the multifunctional wind turbine tower adaptive maintenance device is horizontally rotating, four universal wheels 57 are installed on the end faces on both sides of the outside of the wind shield 67 through universal wheel angle codes 56. The spraying mechanism 8 contacts the outer wall of the tower 3 through the universal wheels 57, so that the multifunctional wind turbine tower adaptive maintenance device can perform horizontal rotation. The distance between the wind shield 67 and the tower 3 can be adjusted through the universal wheel angle codes 56, thereby adjusting the wind protection effect.

[0064] In summary, the multifunctional wind turbine tower adaptive maintenance device can perform horizontal rotation and vertical lifting relative to the tower 3 through the walking mechanism 4 of the three climbing units 1. The walking mechanism 4 is powered by lithium batteries, so that the design has the characteristics of high efficiency and no pollution, high safety factor, and low investment cost. At the same time, the roller brush cleaning mechanism 6 of each climbing unit 1 can clean the dust, rust, and oil stains on the outer surface of the tower 3. The working surface of the roller brush cleaning mechanism 6 is a circular surface, which avoids the problem of uneven cleaning ability of the disc brush. At the same time, the roller brush 51 is in line contact with the outer wall of the tower 3, which has a higher fit than the disc brush and a better cleaning effect. The steam cleaning mechanism 7 can steam clean the outer surface of the tower 3. The steam cleaning mechanism 7 has the characteristics of good oil cleaning effect, low water consumption, low energy consumption, and high safety factor. The spraying mechanism 8 can spray paint on the outer surface of the tower 3. The spraying mechanism 8 can spray the outer wall of the tower 3 where it needs to be repaired when cleaning the tower 3. Since the outer wall of the tower 3 is arc-shaped, spraying is better than ordinary roller brushes. The multifunctional wind turbine tower adaptive maintenance device can change the diameter according to the change of the tower 3 diameter through the automatic clamping mechanism 2, and has a certain buffer kinetic energy, so that the device can successfully complete the relevant operations on the tower 3, and has the characteristics of good oil cleaning effect, low water consumption, low energy consumption and high safety factor.

[0065] It should be noted that the motor 12 and the travel switch 21 of the automatic clamping mechanism 2 mentioned in this embodiment; the drive motor 26, the gear box 27, the steering motors 31, 37 of the walking mechanism 4; the pneumatic cylinders 47, 66 of the roller brush mounting frame 44, the steam mounting frame 45 and the spray mounting frame 63; the roller brush motor 50, the coupling 58, the clean water source, and the wastewater collection device of the roller brush cleaning mechanism 6; the steam generator of the steam cleaning mechanism 7; and the paint spraying equipment of the spray mechanism 8 are all existing products and can be purchased on the market. The circuit connection, installation, internal structure, and working principle of the above products belong to the prior art, and therefore will not be described in detail in this embodiment.

Claims

1. A multifunctional wind turbine tower adaptive maintenance device, characterized in that: The multifunctional wind turbine tower adaptive maintenance device comprises a plurality of climbing units; The plurality of climbing units are connected by an automatic clamping mechanism to form a multifunctional wind turbine tower adaptive maintenance device that is annular in shape as a whole. The automatic clamping mechanism can automatically adjust the spacing between the climbing units to ensure that the plurality of climbing units of the multifunctional wind turbine tower adaptive maintenance device are always in contact with the outer wall of the tower. Each climbing unit includes a walking mechanism, an annular frame, a roller brush cleaning mechanism, a steam cleaning mechanism and a spraying mechanism; the annular frame is an arc-shaped frame structure, the front and rear ends of which are connected to the annular frame of another climbing unit through an automatic clamping mechanism, the walking mechanism is installed at the middle of the inner side of the annular frame, the spraying mechanism is installed at the top of the middle of the annular frame, and the roller brush cleaning mechanism and the steam cleaning mechanism are installed at the inner sides of the front and rear ends of the annular frame respectively; The multifunctional wind turbine tower adaptive maintenance device can perform horizontal rotation and vertical lifting relative to the tower through the walking mechanisms of several climbing units; while performing horizontal rotation, the roller brush cleaning mechanism of each climbing unit can clean the dust, rust and oil stains on the outer surface of the tower, the steam cleaning mechanism of each climbing unit can steam clean the outer surface of the tower, and the spraying mechanism of each climbing unit can spray paint on the outer surface of the tower; The automatic clamping mechanism comprises a driving frame, a transmission assembly, a screw, a guide tube assembly and a buffer frame; one end of the screw is rotatably mounted on the driving frame through a bearing, and the driving frame is hinged to the annular frame; the transmission assembly is mounted on the driving frame and the screw, which can drive the screw to rotate relative to the driving frame, and comprises a motor, a belt, a small pulley and a large pulley, the motor is fixedly mounted on the driving frame, the small pulley is fixedly mounted on the output shaft of the motor, the large pulley is fixedly sleeved on the screw, and the small pulley and the large pulley are connected by a belt transmission; the guide tube assembly comprises a guide tube, a guide block, a guide nut and a spring, the guide tube is a tube structure with an internal hollow and an open side, the open end of the guide tube is fixedly mounted on the buffer frame, the guide tube and the buffer frame are both movably sleeved on the screw, the guide nut and the spring are located inside the guide tube, the guide nut and the spring are sleeved on the screw, and the guide nut is threadedly connected to the screw, the spring is located between the guide nut and the sealing end of the guide tube, and a guide groove is also provided on the outer wall of the guide tube, and the guide block passes through the guide groove and is fixedly connected to the guide nut; The walking mechanism includes a chassis, a steering mechanism and a driving mechanism; the chassis adopts a two-axle four-wheel structure, the front axle is equipped with two driven wheels, and the rear axle is equipped with two driving wheels; the driving mechanism is arranged at the rear side of the chassis, and includes a driving motor, a gear box, a transmission gear and a driving gear, the driving motor is fixedly installed at the rear side of the chassis through the gear box, the output shaft of the driving motor is inserted into the gear box, the transmission gear is installed outside the gear box, the transmission gear is connected to the driving motor through the gear box, the driving gear is fixedly sleeved on the rear axle, and the driving gear is meshed with the transmission gear; The roller brush cleaning mechanism and the steam cleaning mechanism are respectively installed on the inner sides of the front and rear ends of the annular frame through the roller brush mounting frame and the steam mounting frame, and can fit with the outer wall of the tower; the roller brush mounting frame and the steam mounting frame have the same structure and both include a rectangular mounting frame, a pneumatic cylinder, an articulated angle code and a connecting pin, one end of the rectangular mounting frame is hinged to the annular frame through a connecting pin, and the other end is hinged to the roller brush cleaning mechanism or the steam cleaning mechanism through an articulated angle code, the cylinder body of the pneumatic cylinder is installed in the middle of the rectangular mounting frame, and is hinged to the rectangular mounting frame through a connecting pin, and the pneumatic rod of the pneumatic cylinder is hinged to the annular frame through the connecting pin; the pneumatic cylinder drives the rectangular mounting frame to swing relative to the annular frame through the extension and contraction of its pneumatic rod, so that the roller brush cleaning mechanism or the steam cleaning mechanism fits with the outer wall of the tower; The spray mechanism is installed on the top in the middle of the annular frame through a spray mounting frame, and can fit with the outer wall of the tower; the spray mounting frame is triangular, and includes a hypotenuse frame, a base and a pneumatic cylinder; the base is fixedly installed on the top in the middle of the annular frame; one end of the hypotenuse frame is inserted into one side of the base, and is hinged to the base through a connecting pin, and the other end is hinged to the spray mechanism through a hinge angle code; the cylinder body of the pneumatic cylinder is installed on the other side of the base, and is hinged to the base through a connecting pin, and the pneumatic rod of the pneumatic cylinder is hinged to the hypotenuse frame through a hinge angle code; the pneumatic cylinder drives the hypotenuse frame to swing relative to the annular frame through the extension and contraction of its pneumatic rod, so that the spray mechanism fits with the outer wall of the tower.

2. The multifunctional wind turbine tower adaptive maintenance device according to claim 1 is characterized in that: A travel switch is also installed on the outside of the guide tube through a travel switch seat. The travel switch is arranged on both sides of the guide groove, and the travel switch can contact the guide block. The travel switch cooperates with the guide block to detect the travel of the guide tube.

3. The multifunctional wind turbine tower adaptive maintenance device according to claim 1 is characterized in that: The chassis is fixedly connected to the annular frame through a connecting column; the steering mechanism is installed at the front axle and the driven wheels, the driven wheels are respectively hinged to the front axle, and the steering mechanism realizes steering by generating an angle offset between the driven wheels and the chassis; the steering mechanism includes a connecting rod, a steering motor, a screw, a slider and a steering rod, the connecting rod is located between the two driven wheels, and the two ends of the connecting rod are respectively hinged to the two driven wheels, and a mounting groove for matching the steering motor and the screw is provided on the chassis, the steering motor is fixedly installed in the mounting groove, the output end of the steering motor is fixedly connected to one end of the screw, and the other end of the screw is rotatably connected to the inner wall of the mounting groove, the slider is located in the mounting groove, the slider is sleeved on the screw and is threadedly connected to the screw, and the slider can move in the mounting groove by rotating the screw, one end of the steering rod is hinged to the slider, and the other end is hinged to the driven wheel.

4. The multifunctional wind turbine tower adaptive maintenance device according to claim 1 is characterized in that: A turntable is connected to the middle of the chassis through a connecting column, and the chassis is rotatably connected to the annular frame through the turntable; the steering mechanism is installed on the annular frame, which is transmission-connected to the turntable, and the steering mechanism realizes steering by driving the chassis to rotate as a whole; the steering mechanism includes a steering motor, a steering belt, a small steering pulley, a large steering pulley, a worm bearing seat, a worm and a turbine, both ends of the worm are rotatably installed on the annular frame through the worm bearing seat, one end of the worm passes through the worm bearing seat and is fixedly installed with the large steering pulley, the steering motor is fixedly installed on the annular frame, and the output end of the steering motor is fixedly mounted on the small steering pulley, the small steering pulley is transmission-connected to the large steering pulley through the steering belt, and the turbine is fixedly installed on the turntable, and the turbine passes through the annular frame and meshes with the worm.

5. The multifunctional wind turbine tower adaptive maintenance device according to claim 1 is characterized in that: The roller brush cleaning mechanism includes a roller brush motor, a roller brush, a roller brush installation box, a spray pipe and a sewage pipe; The two ends of the roller brush are rotatably installed in the roller brush installation box through the bearing seat; the roller brush installation box is a rectangular box body, which is hinged to the roller brush installation frame through a hinged angle code, and is provided with a window for exposing the roller brush part to the outside of the roller brush installation box, and universal wheels are installed on both sides of the outside through universal wheel angle codes; the roller brush motor is fixedly installed at one end of the outside of the roller brush installation box, and its output shaft passes through the roller brush installation box and is connected to one end of the roller brush through a coupling; the spray pipe is inserted into the roller brush installation box from the other end of the roller brush installation box, and is arranged parallel to the roller brush. A number of water spray holes are provided on it, which can be connected to a clean water source through a pipeline, and spray water to the roller brush to clean it; the sewage pipe is inserted into the roller brush installation box from the other end of the roller brush installation box, and can be connected to the wastewater collection device pipeline to discharge the sewage in the roller brush installation box.

6. The multifunctional wind turbine tower adaptive maintenance device according to claim 1 is characterized in that: The steam cleaning mechanism comprises a steam pipe, a steam pipe installation box and a steam generator; The steam pipe is fixedly installed in the steam pipe installation box, and is provided with a plurality of nozzles exposed outside the steam pipe installation box. One end of the steam pipe is sealed by a fixing screw, and the other end thereof passes through the steam pipe installation box and is connected to the steam generator through a pipeline; the steam pipe installation box is hinged to the steam installation frame through an articulated angle bracket, and universal wheels are installed on both sides of the outside through universal wheel angle brackets.

7. The multifunctional wind turbine tower adaptive maintenance device according to claim 1 is characterized in that: The spraying mechanism comprises a wind shield and a spray head; The wind shield is a box structure with an opening on one side, the opening side of which faces the outer wall of the tower, and a number of nozzles arranged in a line are installed on the other side, and the nozzles arranged in a line are connected to the paint spraying equipment through pipelines; universal wheels are also installed on the end faces on both sides of the outside of the wind shield through universal wheel angle brackets.

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