Cleaning device for wind power tower drum

Abstract

The utility model relates to a cleaning device for a wind power tower drum. The cleaning device comprises a base frame and a cleaning device, wherein the base frame is configured to be arranged on the wind power tower in a sleeving mode; the lifting assembly is movably arranged on the base frame and used for driving the base frame to ascend or descend along the central axis of the base frame; the mounting bracket is arranged on the base frame, and the size of the mounting bracket in the radial direction of the base frame is adjustable; and the cleaning assembly is arranged on the mounting bracket and is used for cleaning the wind power tower drum. The size of the cleaning device can be automatically adjusted according to the diameter of the wind power tower barrel, and the cleaning requirements of wind power tower barrels of different sizes can be met.

Description

Technical Field

[0001] This application relates to the field of cleaning equipment technology, and more specifically to a cleaning device for wind turbine towers. Background Technology

[0002] Wind turbine towers are the supports used in wind power generation systems. Exposed to wind and rain year-round, their surfaces frequently become dirty, damaged, and rusty. Therefore, regular maintenance, including cleaning, flaw detection, and rust removal, is necessary. Due to the considerable height of wind turbine towers (generally exceeding 50 meters), cleaning robots are typically used to climb along the tower walls for automated cleaning.

[0003] Existing cleaning robots need to be designed and manufactured according to the diameter of existing wind turbine towers, making it difficult to meet the cleaning needs of wind turbine towers with different diameters, thus limiting their applicability. In addition, existing cleaning robots also have difficulty moving and cleaning when encountering areas on wind turbine towers with varying diameters. For example, when encountering protruding welding bumps on the surface of the wind turbine tower, existing cleaning robots get stuck and do not move, resulting in low cleaning efficiency.

[0004] Therefore, a new technical solution is needed in this field to solve the above problems. Utility Model Content

[0005] To address or improve to some extent the technical problems of limited applicability and low cleaning efficiency of existing cleaning devices for wind turbine towers, this utility model provides a cleaning device for wind turbine towers. The cleaning device includes: a base frame configured to be fitted onto the wind turbine tower; a lifting assembly movably disposed on the base frame for driving the base frame to rise or fall along its central axis; a mounting bracket disposed on the base frame, the radial dimension of which is adjustable; and a cleaning assembly arranged on the mounting bracket for cleaning the wind turbine tower.

[0006] Those skilled in the art will understand that the cleaning device for wind turbine towers of this invention includes a base frame, a mounting bracket, a lifting assembly, and a cleaning assembly. The base frame provides a suitable installation area for the mounting bracket, lifting assembly, and cleaning assembly. The base frame is fitted onto the wind turbine tower, facilitating the installation of the cleaning device. The lifting assembly is arranged on the base frame to drive the base frame to rise or fall along its central axis, enabling the cleaning device to move automatically along the tower wall and allowing the cleaning assembly to clean the entire tower wall along the central axis. The mounting bracket's diameter along the base frame is adjustable, allowing it to change its own diameter when encountering changes in tower diameter during ascent or descent, thus enabling the entire cleaning device to traverse areas of diameter variation without jamming, improving cleaning efficiency. Furthermore, the adjustable diameter of the mounting bracket can accommodate wind turbine towers of various diameters, broadening its application range.

[0007] In the preferred embodiment of the cleaning device for wind turbine towers described above, the mounting bracket is composed of multiple arc-shaped bracket units connected in series, and any two adjacent arc-shaped bracket units can be detachably connected.

[0008] With the above-described detachable connection between the arc-shaped support units, several arc-shaped support units can be set up according to the area to be cleaned. On the one hand, this reduces the weight of the units themselves and improves cleaning efficiency; on the other hand, it avoids cleaning areas that do not need to be cleaned, thus saving energy.

[0009] In the preferred embodiment of the cleaning device for wind turbine towers described above, at least one of the arc-shaped support units is provided with an arc-shaped mounting hole extending circumferentially therein, and the arc-shaped support unit adjacent to the at least one arc-shaped support unit is provided with a mounting member that is movably disposed within the arc-shaped mounting hole.

[0010] With the above configuration, the mounting component can move circumferentially in the arc-shaped mounting hole along the arc-shaped support unit, providing adjustment space for the radial adjustment of the arc-shaped support units along the base frame, thus realizing the radial dimension adjustment of the mounting bracket. The structure is simple and easy to implement.

[0011] In the preferred embodiment of the cleaning device for wind turbine towers described above, two adjacent arc-shaped support units are movably connected, and an elastic element arranged radially is provided between the arc-shaped support unit and the base frame, with the elastic element abutting against the arc-shaped support unit and the base frame.

[0012] With the above settings, the elastic element can provide adjustment space for the radial adjustment of the arc-shaped support units along the base frame by utilizing its own elastic deformation, thereby realizing the size adjustment of the mounting bracket. The structure is simple and easy to implement.

[0013] In the preferred embodiment of the cleaning device for wind turbine towers described above, the mounting bracket is configured to rotate about the central axis of the base frame.

[0014] With the above setup, the mounting bracket drives the cleaning assembly to rotate around the central axis, which can increase the cleaning range along the circumferential area of ​​the cylinder wall, resulting in a wider cleaning range.

[0015] In the preferred embodiment of the cleaning device for wind turbine towers described above, the base frame is composed of multiple arc-shaped base frame units connected in series, and any two adjacent arc-shaped base frame units are detachably connected.

[0016] With the above setup, the base frame units can be separated, which reduces the space occupied during transportation and facilitates transport.

[0017] In the preferred embodiment of the cleaning device for wind turbine towers described above, the lifting assembly includes: a plurality of lifting rollers spaced apart from each other along the circumference of the base frame, the lifting rollers being movably mounted on the base frame; and a lifting motor mounted on the base frame, the lifting motor being configured to drive the lifting rollers to roll forward or backward, so that the base frame rises or falls along the central axis.

[0018] With the above-described configuration, the lifting rollers on the base frame cause the cleaning device to roll and rub against the tower wall, reducing damage to the wall compared to sliding friction. Multiple lifting rollers increase the contact area with the tower wall, reducing the pressure on the wall and thus minimizing damage. A lifting motor drives the lifting rollers to rotate, enabling the cleaning device to automatically rise and fall on the tower wall, giving it automation capabilities for easier cleaning.

[0019] In the preferred embodiment of the above-mentioned cleaning device for wind turbine towers, the lifting assembly further includes a roller bracket, the middle part of which is movably mounted on the base frame, and each end of the roller bracket is provided with a corresponding lifting roller, the two ends of which are arranged along the central axis; and / or the lifting roller is magnetic; and / or an anti-slip sleeve is provided on the lifting roller.

[0020] With the above-described configuration, the roller support can move on the base frame. When the lifting roller rolls on the cylinder wall with a certain angle of inclination, the roller support can adjust its angle according to the change in the diameter of the cylinder wall, ensuring good contact between the lifting roller and the cylinder wall, thus increasing the lifting efficiency of the lifting assembly. Two lifting rollers are respectively set at both ends of the roller support along the central axis, allowing the roller support to adjust its angle according to the position changes of the two lifting rollers. This convenient adjustment improves the moving efficiency of the lifting assembly in areas where the cylinder wall diameter changes. Furthermore, the lifting rollers are magnetic, which enhances the clamping force of the lifting rollers on the magnetic tower material, increases the friction between the lifting rollers and the cylinder wall, reduces slippage, and increases the moving speed of the lifting assembly. Moreover, the anti-slip sleeve increases the friction between the lifting rollers and the cylinder wall, increasing the moving speed of the lifting assembly, thereby improving the cleaning efficiency of the cleaning device.

[0021] In the preferred embodiment of the cleaning device for wind turbine towers described above, the cleaning device further includes a spraying mechanism, which comprises: a liquid storage box fixed on the base frame and containing cleaning liquid inside; a water pump having an inlet communicating with the liquid storage box and an outlet communicating with the inlet; and a nozzle communicating with the outlet to spray the cleaning liquid onto the wind turbine tower.

[0022] With the above setup, the water pump first pumps the cleaning fluid out of the storage box from the inlet, then pumps the cleaning fluid into the nozzle through the outlet, and finally sprays the cleaning fluid out of the nozzle, thereby cleaning the wall of the wind turbine tower and further improving cleaning efficiency.

[0023] In the preferred embodiment of the cleaning device for wind turbine towers described above, the cleaning device further includes a camera mounted on the base frame, the camera being used to collect image information of the wind turbine tower wall.

[0024] With the above setup, the camera can capture images of the wind turbine tower wall, making it easy to determine the cleanliness of the tower wall and adjust the cleaning area based on the image information, thereby improving cleaning efficiency.

[0025] In the preferred embodiment of the cleaning device for wind turbine towers described above, the cleaning assembly includes: a support rod, the support rod including a fixed end disposed on the mounting bracket and a movable end opposite to the fixed end; and a cleaning head, the cleaning head being rotatably disposed on the movable end.

[0026] With the above setup, the support rod holds the cleaning head on the mounting bracket, allowing the bracket to move the cleaning head for cleaning different areas. The structure is simple and easy to implement. The cleaning head rotates on the support rod, enabling it to clean the cylinder wall in a rolling motion, improving cleaning efficiency.

[0027] In the preferred embodiment of the cleaning device for wind turbine towers described above, the cleaning device further includes a controller, which is communicatively connected to both the lifting assembly and the sweeping assembly. The controller enables communication between the lifting assembly and the sweeping assembly, facilitating automated control.

[0028] In the preferred embodiment of the cleaning device for wind turbine towers described above, the cleaning device further includes an adsorption assembly disposed on the base frame. The adsorption assembly includes suction cups that can be selectively adsorbed onto the wind turbine tower. The suction cups adsorb onto the tower wall, allowing the base frame to be fixed to the tower wall, facilitating the cleaning head of the cleaning assembly to clean the tower wall and ensuring high cleaning efficiency.

[0029] In the preferred embodiment of the cleaning device for wind turbine towers described above, the base frame and / or the mounting bracket are made of plastic. Plastic has deformable properties. The base frame and mounting bracket, made of plastic, can adjust their diameter using their own deformation to accommodate changes in the tower's diameter, thus expanding the adaptability of the cleaning device. Attached Figure Description

[0030] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which:

[0031] Figure 1 This is a structural schematic diagram of the cleaning device for wind turbine towers according to this utility model;

[0032] Figure 2 This is a structural diagram of the working state of the cleaning device for wind turbine towers according to this utility model;

[0033] Figure 3 This is a schematic diagram of the base frame of the cleaning device for wind turbine towers according to this utility model;

[0034] Figure 4 This is a schematic diagram of the installation bracket for the cleaning device of the present invention for wind turbine towers;

[0035] Figure 5 This is an axial cross-sectional view along the base frame of the cleaning device for wind turbine towers according to this utility model;

[0036] Figure 6 This is a partial cross-sectional view of the rotation drive assembly of the cleaning device for wind turbine towers according to this utility model;

[0037] Figure 7 This is a schematic diagram of the elastic component of the cleaning device for wind turbine towers according to this utility model.

[0038] List of reference numerals in the attached diagram:

[0039] 100. Cleaning device; 1. Base frame; 11. Arc-shaped base frame unit; 12. Pin; 2. Lifting assembly; 21. Lifting roller; 22. Lifting motor; 23. Roller bracket; 3. Mounting bracket; 31. Arc-shaped bracket unit; 311. Arc-shaped mounting hole; 32. Mounting component; 33. Elastic component; 4. Sweeping assembly; 41. Support rod; 42. Cleaning head; 5. Adsorption assembly; 51. Suction cup; 52. Support rod; 6. Spray assembly; 61. Liquid storage box; 62. Spray head; 7. Camera; 8. Rotation drive assembly; 81. Support roller; 82. Rotation drive roller; 83. Rotation motor; 200. Wind turbine tower. Detailed Implementation

[0040] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0041] It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "front", "rear", "inner", "outer", etc., indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0042] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] To address or improve to some extent the technical problems of limited applicability and low cleaning efficiency of existing cleaning devices for wind turbine towers, this utility model provides a cleaning device 100 for wind turbine towers. The cleaning device 100 includes: a base frame 1 configured to be fitted onto a wind turbine tower 200; a lifting assembly 2 movably disposed on the base frame 1 for driving the base frame 1 to rise or fall along its central axis; a mounting bracket 3 disposed on the base frame 1, the radial dimension of which is adjustable; and a cleaning assembly 4 arranged on the mounting bracket 3 for cleaning the wind turbine tower 200.

[0044] Figure 1 This is a structural schematic diagram of the cleaning device for wind turbine towers according to this utility model;

[0045] Figure 2 This is a structural diagram showing the working state of the cleaning device for wind turbine towers according to this utility model. (See also...) Figure 1 and Figure 2 In one or more embodiments, the cleaning device 100 for wind turbine towers of this invention includes a base frame 1, a lifting assembly 2, a mounting bracket 3, and a sweeping assembly 4. The base frame 1 provides a suitable installation area for the lifting assembly 2, the mounting bracket 3, and the sweeping assembly 4. In one or more embodiments, the base frame 1 is approximately annular in shape. The base frame 1 is configured to fit over the wind turbine tower 200. That is, the circular hole in the center of the annular base frame 1 allows the wind turbine tower 200 to pass through. The base frame 1 is made of plastic. Plastic material has deformable properties, allowing the inner diameter of the base frame 1 to automatically adjust to the diameter of the wind turbine tower 200 during lifting, facilitating lifting in areas where the diameter of the wind turbine tower 200 changes, thus having a wide range of applications. When encountering protruding welding bumps on the surface of the wind turbine tower, the base frame 1 can undergo corresponding radial deformation, allowing the cleaning device 100 to pass over the welding bumps, resulting in high cleaning efficiency.

[0046] Figure 3 This is a schematic diagram of the base frame 1 of the cleaning device 100 for wind turbine towers according to this utility model. (See also...) Figure 3 In one or more embodiments, the base frame 1 is composed of multiple arc-shaped base frame units 11. Any two adjacent arc-shaped base frame units 11 are detachably connected. In one or more embodiments, the number of arc-shaped base frame units 11 is eight. The eight arc-shaped base frame units 11 are connected end-to-end to form a circular base frame 1. Each of the two ends of the arc-shaped base frame unit 11 has a through hole (not shown in the figure). A pin 12 is provided in the through hole. The pin 12 is interference-fitted with the through hole. The interference fit can both fix the pin 12 in the through hole and remove the pin 12 from the through hole. The pin 12 is installed in the through holes of two adjacent arc-shaped base frame units 11, enabling the two adjacent arc-shaped base frame units 11 to be installed and fixed, facilitating installation. The pin 12 is removed from the through holes of two adjacent arc-shaped base frame units 11, allowing the two arc-shaped base frame units 11 to be separated, facilitating disassembly. The disassembled arc-shaped base frame units 11 occupy a small volume during transportation, making them convenient for transport. Alternatively, the multiple arc-shaped base frame units 11 may not completely surround the wind turbine tower 200. That is, the multiple arc-shaped base frame units 11 may surround a portion of the wind turbine tower 200 along the circumferential direction. The number of arc-shaped base frame units 11 can be set according to the cleaning area, reducing the weight of the device itself and improving cleaning efficiency. Alternatively, the number of arc-shaped base frame units 11 may also be more or less than 8, such as 7, 9, etc.

[0047] See also Figure 1 and Figure 2The mounting bracket 3 is disposed on the base frame 1. In one or more embodiments, the mounting bracket 3 is approximately annular in shape. Figure 1 As shown, the mounting bracket 3 is positioned on the upper side of the base frame 1. The radial dimension of the mounting bracket 3 along the base frame 1 is adjustable, allowing it to adjust its radial dimension accordingly based on the diameter of the wind turbine tower 200, facilitating smooth ascent or descent in areas where the diameter changes. The mounting bracket 3 is made of plastic. Plastic's deformable properties allow the inner diameter of the mounting bracket 3 to automatically adjust to the diameter of the wind turbine tower 200 during ascent and descent, ensuring smooth ascent and descent in areas where the diameter of the wind turbine tower 200 changes.

[0048] Figure 4 This is a schematic diagram of the mounting bracket for the cleaning device of this utility model used in wind turbine towers. (See also...) Figure 4 In one or more embodiments, the mounting bracket 3 is composed of multiple arc-shaped bracket units 31. Any two adjacent arc-shaped bracket units 31 are detachably connected. In one or more embodiments, the number of arc-shaped bracket units 31 is eight. The eight arc-shaped bracket units 31 are connected end-to-end to form a circular mounting bracket 3. Alternatively, the multiple arc-shaped bracket units 31 may not completely surround the wind turbine tower 200; that is, the multiple arc-shaped bracket units 31 may surround a portion of the wind turbine tower 200 along its circumference. The number of arc-shaped bracket units 31 can be set according to the cleaning area, reducing the weight of the device and improving cleaning efficiency. Alternatively, the number of arc-shaped bracket units 31 may also be more or less than eight, such as seven, nine, etc.

[0049] See also Figure 4 In one or more embodiments, at least one arc-shaped support unit 31 is provided with an arc-shaped mounting hole 311 extending circumferentially therein. An arc-shaped support unit 31 adjacent to the at least one arc-shaped support unit 31 is provided with a mounting member 32 movably disposed within the arc-shaped mounting hole 311. In one or more embodiments, each of the two ends of the arc-shaped support unit 31 has an arc-shaped mounting hole 311. The mounting member 32 is specifically a cylindrical pin. The pin is clearance-fitted with the arc-shaped mounting hole 311. The pin is installed in the arc-shaped mounting holes 311 of two adjacent arc-shaped support units 31, enabling the two adjacent arc-shaped support units 31 to be fixed in place, facilitating installation. The pin can be removed from the arc-shaped mounting holes 311 of two adjacent arc-shaped support units 31, allowing the two arc-shaped support units 31 to be disassembled easily. The disassembled arc-shaped support units 31 occupy a small volume during transportation, facilitating transport.

[0050] See also Figure 2 and Figure 4In one or more embodiments, the arc-shaped mounting hole 311 is approximately waist-shaped. Specifically, the arc-shaped mounting hole 311 is arc-shaped along its length. During use, in areas where the diameter of the wind turbine tower 200 changes, the pin is displaced accordingly along the length of the arc-shaped mounting hole 311, so that the radial dimension of the mounting bracket 3 along the base frame 1 is adjustable. This allows the radial dimension of the mounting bracket 3 to be adjusted according to the diameter of the wind turbine tower 200, facilitating smooth ascent or descent in areas of diameter variation.

[0051] Figure 7 This is a structural schematic diagram of the elastic element 33 in the cleaning device 100 for wind turbine towers according to this utility model. (See also...) Figure 7 The two adjacent arc-shaped support units 31 are movably connected. An elastic element 33 is provided radially between the arc-shaped support unit 31 and the arc-shaped base frame unit 11. The elastic element 33 abuts against the arc-shaped support unit 31 and the arc-shaped base frame unit 11. In one or more embodiments, the elastic element 33 may specifically be a helical spring. The length direction of the spring is radially arranged along the arc-shaped base frame unit 11. The outer cylindrical surface of the arc-shaped base frame unit 11 has a first mounting groove (not shown in the figure). The inner wall of the arc-shaped support unit 31 has a second mounting groove (not shown in the figure). One end of the spring is fixed in the first mounting groove. The end of the spring away from the arc-shaped base frame unit 11 is fixed in the second mounting groove. During use, the spring is in a compressed state. In the region where the diameter of the wind turbine tower 200 varies, the springs extend or shorten accordingly along the radial direction of the arc-shaped base unit 11, so that the radial dimension of the arc-shaped support unit 31 along the arc-shaped base unit 11 is adjustable. This allows the arc dimension of the support unit 31 to be adjusted according to the diameter of the wind turbine tower 200, facilitating smooth ascent or descent in the region where the diameter varies.

[0052] Figure 5 This is an axial sectional view along the base frame of the cleaning device for wind turbine towers according to this utility model. See also... Figure 1 and Figure 5 In one or more embodiments, the mounting bracket 3 is configured to rotate around the central axis of the base frame 1. In one or more embodiments, the arc-shaped bracket unit 31 is rotatably connected to a rotating drive roller 82. The wheel surface of the rotating drive roller 82 is in contact with the outer cylindrical surface of the arc-shaped base frame unit 11. The axle of the rotating drive roller 82 is parallel to the central axis of the arc-shaped base frame unit 11. The arc-shaped bracket unit 31 is provided with a rotating motor 83. The output shaft of the rotating motor 83 is fixedly connected to the axle of the rotating drive roller 82, enabling the rotating motor 83 to drive the rotating drive roller 82 to rotate. The rotating drive roller 82 rolls and rubs on the outer cylindrical surface of the arc-shaped base frame unit 11, thereby enabling the rotating drive roller 82 to drive the arc-shaped bracket unit 31 to rotate around the central axis of the arc-shaped base frame unit 11.

[0053] Figure 6 This is a partial cross-sectional view of the rotation drive assembly of the cleaning device for wind turbine towers according to this utility model. See also... Figure 6 In one or more embodiments, a gap is left between the arc-shaped support unit 31 and the arc-shaped base frame unit 11 along the axial direction of the wind turbine tower 200. A support roller 81 is provided in the gap between the arc-shaped support unit 31 and the arc-shaped base frame unit 11 along the axial direction of the wind turbine tower 200. The support roller 81 is rotatably connected to the arc-shaped support unit 31. The axle length direction of the support roller 81 is radially parallel to the arc-shaped base frame unit 11, allowing the arc-shaped support unit 31 to rotate circumferentially along the wind turbine tower 200 on the arc-shaped base frame unit 11. The wheel surface of the support roller 81 contacts the side of the arc-shaped base frame unit 11 closest to the arc-shaped support unit 31, allowing the support roller 81 to roll between the arc-shaped base frame unit 11 and the arc-shaped support unit 31 when the arc-shaped support unit 31 rotates. The support roller 81 makes the friction between the arc-shaped support unit 31 and the arc-shaped base frame unit 11 a rolling friction. Compared with the direct surface contact between the arc-shaped support unit 31 and the arc-shaped base frame unit 11, it not only reduces the wear of the arc-shaped support unit 31 and the arc-shaped base frame unit 11 and extends the service life, but also reduces the friction and improves the rotation efficiency of the arc-shaped support unit 31 relative to the arc-shaped base frame unit 11.

[0054] See also Figure 2 and Figure 5 In one or more embodiments, the lifting assembly 2 includes a plurality of lifting rollers 21, roller supports 23, and a lifting motor 22. The lifting rollers 21 are spaced apart from each other circumferentially along the base frame 1 and are movably mounted on the base frame. The lifting motor 22 is mounted on the base frame 1 and configured to rotatably drive the rollers 82 to roll forward or backward, causing the base frame 1 to rise or fall along the central axis. In one or more embodiments, the middle portion of the roller support 23 is movably mounted on the arc-shaped base frame unit 11, and each end of the roller support 23 has a corresponding lifting roller 21, with both ends of the roller support 23 arranged along the central axis. In one or more embodiments, the number of lifting rollers 21 can be sixteen. The number of roller supports 23 can be eight. Each end of the roller support 23 is rotatably connected to a lifting roller 21. Both ends of the roller support 23 extend towards the central axis of the arc-shaped base frame unit 11, so that the wheel surface of the lifting roller 21 contacts the wall of the wind turbine tower 200. The middle part of the roller bracket 23 is rotatably connected to the arc-shaped base frame unit 11. Based on Figure 2As shown, a lifting roller 21 on the upper side of the roller bracket 23 is connected to a lifting motor 22. There can be eight lifting motors 22. The output shaft of the lifting motor 22 is fixedly connected to the axle of the lifting roller 21. The body of the lifting motor 22 is fixedly mounted on the roller bracket 23. The lifting motor 22 drives the upper lifting roller 21 to rotate, causing the lifting roller 21 to rotate on the wall of the wind turbine tower 200. The lower lifting roller 21 rotates accordingly, realizing the lifting and lowering of the arc-shaped base frame unit 11 on the wind turbine tower 200. The material of the lifting roller 21 can be, but is not limited to, nickel-based alloys and rare earth alloys. The material of the lifting roller 21 is magnetic, enabling the lifting roller 21 to press tightly against the wall of the wind turbine tower 200, increasing the friction between the lifting roller 21 and the wind turbine tower 200, and improving the lifting efficiency of the lifting assembly 2. The lifting roller 21 is fitted with an anti-slip sleeve. The anti-slip sleeve is installed on the wheel surface of the lifting roller 21, which can increase the surface friction coefficient of the lifting roller 21 and increase the friction between the lifting roller 21 and the wind turbine tower 200, thereby further improving the lifting efficiency of the lifting assembly 2.

[0055] See also Figure 4 A cleaning assembly 4 is arranged on a mounting bracket 3. The cleaning assembly 4 is used to clean the wind turbine tower 200. In one or more embodiments, the cleaning assembly 4 includes a support rod 41 and a cleaning head 42. The support rod 41 includes a fixed end disposed on the mounting bracket 3 and a movable end opposite to the fixed end. The cleaning head 42 is rotatably disposed on the movable end. In one or more embodiments, the cleaning assembly 4 is specifically disposed on an arc-shaped support unit 31. The fixed end of the support rod 41 is rotatably connected to the arc-shaped support unit 31 via a pivot pin. The movable end of the support rod 41 extends toward the central axis of the base frame 1. The cleaning head 42 is specifically a roller brush. The roller brush's shaft is rotatably disposed on the movable end, enabling the roller brush to roll on the wall of the wind turbine tower 200 when it contacts the wall. The roller brush is connected to a roller brush motor (not shown in the figure). The body of the roller brush motor is fixedly disposed on the support rod 41. The output shaft of the roller brush motor is fixedly connected to the rotating shaft of the roller brush, which enables the roller brush motor to drive the roller brush to rotate, so that the brush bristles brush on the cylinder wall, thereby improving cleaning efficiency.

[0056] See also Figure 3In one or more embodiments, the cleaning device 100 further includes a spray assembly 6. The spray assembly 6 is disposed on the base frame 1. The spray assembly 6 includes: a liquid storage box 61, a water pump (not shown), and nozzles 62. The liquid storage box 61 is fixed to the base frame 1. The liquid storage box 61 contains cleaning liquid. The water pump has an inlet communicating with the liquid storage box 61 and an outlet communicating with the inlet. The nozzles 62 communicate with the outlet to spray the cleaning liquid onto the wind turbine tower 200. In one or more embodiments, the number of liquid storage boxes 61 is eight. Each of the eight arc-shaped base frame units 11 has a liquid storage box 61. The liquid storage box 61 has an outlet for the cleaning liquid to flow out. The number of water pumps is eight. Each of the eight arc-shaped base frame units 11 has a water pump. The water pump is fixedly disposed on the arc-shaped base frame unit 11. The number of nozzles 62 is eight. Each of the eight arc-shaped base frame units 11 has a nozzle 62. The water pump inlet is connected to the outlet of the liquid storage box 61 via a water pipe. The water pump outlet is connected to the spray nozzle of the nozzle 62 via a water pipe. During operation, the water pump first draws cleaning fluid from the liquid storage box 61, the cleaning fluid flows into the water pump inlet, and then the water pump pumps the cleaning fluid through the outlet into the nozzle 62. Finally, the cleaning fluid is sprayed out from the nozzle 62, achieving cleaning of the wall of the wind turbine tower 200 and further improving cleaning efficiency.

[0057] See also Figure 3 In one or more embodiments, the cleaning device 100 further includes a camera 7 disposed on the base frame 1. The camera 7 is used to acquire image information of the wall of the wind turbine tower 200. In one or more embodiments, the camera 7 is fixedly disposed on the arc-shaped base frame unit 11. The lens of the camera 7 is opposite to the wall of the wind turbine tower 200. By acquiring image information of the wall of the wind turbine tower 200, the camera 7 can automatically determine the cleaning status of the wall, facilitating the adjustment of the cleaning area based on the image information and improving cleaning efficiency.

[0058] In one or more embodiments, the cleaning device 100 also includes a controller (not shown). See also... Figure 1 The controller is communicatively connected to the lifting assembly 2, the sweeping assembly 4, the camera 7, and the spraying assembly 6 for automated control. The communication connection method is not limited; it can be wired, wireless, or other methods. The controller has a pre-installed computer control program to easily control the lifting position of the lifting assembly 2, the sweeping time of the sweeping assembly 4, and the spraying time of the spraying assembly 6 based on the image information of the wind turbine tower 200 wall collected by the camera 7.

[0059] See also Figure 1 and Figure 4In one or more embodiments, the cleaning device 100 further includes an adsorption assembly 5 disposed on the base frame 1. The adsorption assembly 5 includes a suction cup 51 selectively adsorbed onto the wind turbine tower 200. In one or more embodiments, the suction cup 51 is specifically a vacuum suction cup 51 supported by rubber. The number of suction cups 51 is eight. That is, each of the eight arc-shaped base frame units 11 is provided with a suction cup 51. The suction cup 51 is shaped like a disc with a concave center. The concave side of the suction cup 51 is opposite to the wind turbine tower 200. A support rod 52 is fixed to the other side of the suction cup 51. The length direction of the support rod 52 is arranged along the diameter direction of the base frame 1. The support rod 52 is slidably connected to the arc-shaped base frame unit 11. A linear motor (not shown in the figure) is fixedly disposed on the arc-shaped base frame unit 11. The output rod of the linear motor is fixedly connected to the support rod 52 so that the support rod 52 drives the suction cup 51 to slide on the arc-shaped base frame unit 11. The suction cup 51 adheres to the cylinder wall, which can fix the arc-shaped base unit 11 to the cylinder wall, so that the cleaning head 42 of the cleaning component 4 can clean the cylinder wall and ensure high cleaning efficiency.

[0060] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A cleaning device for wind turbine towers, characterized in that, The cleaning device includes: A base frame, configured to be fitted onto the wind turbine tower, the base frame being composed of multiple arc-shaped base frame units connected in series, and the base frame being made of plastic; A lifting assembly is movably mounted on the base frame and is used to drive the base frame to rise or fall along the central axis of the base frame. The lifting assembly includes multiple lifting rollers, roller brackets, and a lifting motor. The lifting rollers are spaced apart from each other along the circumference of the base frame. The middle part of the roller bracket is rotatably connected to the arc-shaped base frame unit. Each end of the roller bracket is provided with a corresponding lifting roller. The lifting motor is configured to drive the lifting rollers to roll in the forward or reverse direction so that the base frame rises or falls along the central axis. A mounting bracket, disposed on the base frame, wherein the radial dimension of the mounting bracket along the base frame is adjustable; and A cleaning assembly, arranged on the mounting bracket, is used to clean the wind turbine tower.

2. The cleaning device for wind turbine towers according to claim 1, characterized in that, The mounting bracket is composed of multiple arc-shaped bracket units connected in series, and any two adjacent arc-shaped bracket units can be detachably connected.

3. The cleaning device for wind turbine towers according to claim 2, characterized in that, At least one of the arc-shaped support units is provided with an arc-shaped mounting hole extending circumferentially therein, and the arc-shaped support unit adjacent to the at least one arc-shaped support unit is provided with a mounting member that is movably disposed within the arc-shaped mounting hole.

4. The cleaning device for wind turbine towers according to claim 2, characterized in that, The two adjacent arc-shaped support units are movably connected, and an elastic element is provided between the arc-shaped support unit and the base frame, with the elastic element abutting against the arc-shaped support unit and the base frame.

5. The cleaning device for wind turbine towers according to any one of claims 1-4, characterized in that, The mounting bracket is configured to rotate about the central axis of the base frame.

6. The cleaning device for wind turbine towers according to claim 1, characterized in that, Any two adjacent arc-shaped base units can be detachably connected.

7. The cleaning device for wind turbine towers according to claim 1, characterized in that, The two ends of the roller bracket are arranged along the central axis; and / or The lifting rollers are magnetic; and / or Anti-slip sleeves are fitted onto the lifting rollers.

8. The cleaning device for wind turbine towers according to claim 1, characterized in that, The cleaning device further includes a spray assembly, which comprises: A liquid storage box, which is fixed on the base frame, contains cleaning liquid inside; A water pump, the water pump having an inlet communicating with the liquid storage tank and an outlet communicating with the inlet; and A nozzle, which is connected to the water outlet, is used to spray the cleaning fluid onto the wind turbine tower.

9. The cleaning device for wind turbine towers according to claim 1, characterized in that, The cleaning device also includes a camera mounted on the base frame, which is used to collect image information of the wind turbine tower wall; and / or The cleaning assembly includes a support rod, which includes a fixed end disposed on the mounting bracket and a movable end opposite to the fixed end; and a cleaning head, the cleaning head being rotatably disposed on the movable end; and / or The cleaning device further includes a controller, which is communicatively connected to both the lifting assembly and the sweeping assembly; and / or The cleaning device further includes an adsorption assembly disposed on the base frame, the adsorption assembly including suction cups that can selectively adsorb onto the wind turbine tower; and / or The mounting bracket is made of plastic.

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