Wind power generation blade cleaning device

Abstract

The invention relates to the field of wind power generation, and discloses a wind power generation blade cleaning device which comprises a wind power blade and a cleaning device. The two cleaning pieces are symmetrically arranged on the surface of the wind power blade; the two connecting belts are arranged on the outer sides of the two cleaning pieces in a sleeving mode and are arranged in parallel, the two ends of each connecting belt are tightened so that the cleaning pieces can be attached to the curved surfaces of the blades, and the two connecting belts can be independently controlled to be folded and unfolded; and the control seat is slidably connected to the inner cavity of the wind power blade. According to the blade cleaning device, through the design of the flexible cleaning piece and the independently retractable connecting belt, the cleaning component is tightly attached to the surface of the blade, and the cleaning piece is made of a flexible silica gel-based composite material and can deform along with the curved surface of the blade; the two connecting belts which are arranged in parallel and can be independently controlled to be retracted and released can automatically adjust the tightening degree according to the surface shape change of the blade.

Description

Technical Field

[0001] The present invention relates to the field of wind power generation, and in particular to a wind power generation blade cleaning device. Background Art

[0002] Wind turbines rely on blades to capture wind energy, converting it into electrical energy through mechanical energy. The amount of wind energy captured by the blades directly determines the amount of electricity produced. In low-temperature environments, ice can easily form on the blade surfaces due to condensation of supercooled water droplets, accumulation of snowflakes, or freezing rain, affecting the performance of the blade airfoil. To address this issue, blade surfaces are typically coated with hydrophobic or low-surface-energy materials, or de-iced using cleaning mechanisms.

[0003] After searching, the publication number CN209179953U discloses a mobile wind turbine blade cleaning device, including a blade, an installation groove is opened on the inner side of the blade, a motor is provided at one end of the installation groove, the motor is installed inside the blade, a movable screw is provided inside the installation groove, the movable screw is rotatably connected to the blade through a bearing, one end of the movable screw is connected to the output end of the motor, a cleaning plate is provided on the outer side of the blade, a screw nut is fixedly connected to the inner side of the cleaning plate, the screw nut is sleeved on the movable screw, and a rubber soft plate is provided on one side of the screw nut.

[0004] Existing blade cleaning devices generally use rigid scrapers, but the fan blades have complex aerodynamic surfaces, and the rigid scrapers can only maintain linear contact locally. The cleaning scrapers are difficult to fit on the blade surface, resulting in low cleaning efficiency. Summary of the Invention

[0005] In order to solve the above-mentioned problems, the present invention is implemented through the following technical solutions.

[0006] A wind turbine blade cleaning device, comprising: A wind turbine blade has an inner cavity formed therein; There are two cleaning blades, which are symmetrically arranged on the surface of the wind turbine blade; There are two connecting belts, which are placed on the outside of the two cleaning sheets and arranged in parallel. Tightening the ends of the connecting belts can make the cleaning sheets fit the curved surface of the blades, and the two connecting belts can be independently controlled to retract and extend; A control seat, slidably connected to the inner cavity of the wind turbine blade; The control seat is provided with two sets of retracting and extending mechanisms, each set of the retracting and extending mechanisms controls one end of two connecting belts on the same side to retract and extend; Two control chambers are provided in the control seat, and each set of retractable mechanisms is respectively arranged in the control chambers. Each set of retractable mechanisms includes two sets of independently operated power storage components, and both sets of power storage components are arranged in the control chambers. Each set of power storage components is connected to one end of the corresponding connecting belt for controlling the retraction and extension of the connecting belt; An electric slide is installed on the inner wall of the inner cavity, and the electric slide is connected with the control seat.

[0007] Preferably, the power storage component includes: a winding wheel, on which one end of the connecting belt is wound; a first gear mounted on the winding wheel; a second gear, mounted in the control cavity, the second gear meshing with the first gear; a third gear, coaxially mounted on the second gear; The movable plate is installed in the control cavity. A rack is installed at the bottom of the movable plate, and the rack is engaged with the third gear. An elastic member is installed on the top of the movable plate, and one end of the elastic member is connected to the inner wall of the control cavity.

[0008] Preferably, a first fixing rod is installed in the control cavity, and the first gears in the two groups of power storage assemblies are both installed on the first fixing rod.

[0009] Preferably, the inner ring of the winding wheel is installed with a first mounting sleeve, the first mounting sleeve is sleeved on the first fixing rod, and the first gear is installed on the first fixing rod.

[0010] Preferably, a second fixing rod is installed in the control cavity, and the second gears in the two groups of power storage assemblies are both installed on the second fixing rod.

[0011] Preferably, a second mounting sleeve is installed on the inner ring of the second gear, the second mounting sleeve is sleeved on the second fixing rod, and the third gear is installed on the second fixing rod.

[0012] Preferably, a through hole is provided on the inner cavity wall of the wind turbine blade, and the connecting belt passes through the through hole and is connected to the cleaning sheet.

[0013] Preferably, the first gear, the second gear and the third gear in the power storage assembly constitute a three-stage stroke amplification mechanism, wherein the pitch circle diameter of the second gear is twice that of the first gear.

[0014] Preferably, the cleaning sheet is a flexible silica gel-based composite material with a micro-hair structure on the surface.

[0015] Preferably, there are two electric slides, which are symmetrically arranged on the inner walls on both sides of the inner cavity.

[0016] The present invention provides a wind turbine blade cleaning device. Compared with existing technologies, it has the following advantages: A flexible cleaning sheet and independently retractable connecting belt design achieves a close fit between the cleaning component and the blade surface. The cleaning sheet is made of a flexible silicone-based composite material and can conform to the deformation of the blade's curved surface. Two parallel, independently retractable connecting belts automatically adjust their tightening according to changes in the blade's surface shape. When the cleaning sheet passes through areas of varying blade thickness, the connecting belts, through the gear transmission of the force storage assembly and the cooperation of the elastic member, achieve adaptive retraction and extension, driving the cleaning sheet to a close fit, eliminating blind spots and ensuring comprehensive cleaning.

[0017] Two symmetrically arranged cleaning sheets clean from both sides of the blade at the same time, expanding the cleaning coverage; and through the adaptive retraction and extension of the connecting belt, the cleaning sheets always fit closely to the surface of the blade, can effectively contact and remove pollutants, and improve cleaning efficiency. The three-stage stroke amplification mechanism composed of the first gear, the second gear and the third gear in the power storage component converts the smaller displacement of the moving plate into a larger rotation angle of the winding wheel, realizing efficient retraction and extension of the connecting belt, so that the cleaning sheet can quickly respond to changes in the shape of the blade surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure proposed by the present invention.

[0019] Figure 2 This is a schematic diagram of a three-dimensional structure from another perspective proposed by the present invention.

[0020] Figure 3 This is a schematic structural diagram of the cleaning sheet, connecting belt and control seat proposed in the present invention.

[0021] Figure 4 This is a schematic structural diagram from another perspective of the cleaning sheet, connecting belt and control seat proposed by the present invention.

[0022] Figure 5 This is a cross-sectional schematic diagram of the control seat proposed by the present invention.

[0023] Figure 6 This is a schematic structural diagram of the control seat, winding wheel, first fixing rod and second fixing rod proposed in the present invention.

[0024] Figure 7 This is a schematic structural diagram of the winding wheel, first fixed rod, second fixed rod, first gear, second gear and second gear proposed in the present invention.

[0025] Figure 8 This is a structural schematic diagram of the winding wheel, first fixing rod, second fixing rod, first mounting sleeve and second mounting sleeve proposed in the present invention.

[0026] The reference numerals in the figures are: 100. Wind turbine blade; 101. Inner cavity; 102. Electric slide; 200, cleaning sheet; 201, connecting belt; 300. Control seat; 301. Control chamber; 302. Winding wheel; 303. First fixing rod; 304. Second fixing rod; 305. First mounting sleeve; 306. First gear; 307. Second gear; 308. Second mounting sleeve; 309. Third gear; 310. Rack; 311. Moving plate; 312. Elastic member. DETAILED DESCRIPTION

[0027] The present invention is further described below with reference to specific examples. It should be understood that these examples are only used to illustrate the present invention and are not used to limit the scope of protection of the present invention.

[0028] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different viewpoints and applications without departing from the spirit of the present invention.

[0029] Reference Figures 1-8 , a wind turbine blade cleaning device, comprising: The wind turbine blade 100 has an inner cavity 101 therein; as a core component of wind power generation, the aerodynamic performance of the wind turbine blade 100 directly affects the power generation efficiency, and the surface cleanliness is a key factor in maintaining the aerodynamic performance, which requires an adapted cleaning device. The inner cavity 101 provided inside provides installation and operation space for other components, and the inner cavity 101 provides an installation base for the entire cleaning device, so that the cleaning device can be integrated inside the wind turbine blade 100 without affecting the external structure and aerodynamic shape of the blade, thereby ensuring the normal operation of the wind power generation function.

[0030] Reference Figure 2 and Figure 3 There are two cleaning sheets 200, which are symmetrically arranged on the surface of the wind turbine blade 100; they are in direct contact with the surface of the wind turbine blade 100 and have the function of removing pollutants. The two symmetrical arrangements can clean the blade from both sides at the same time, with a wider coverage area. The flexible silicone-based composite material enables the cleaning sheet 200 to better fit the complex curved surface of the blade, avoiding the problem that the rigid scraper is difficult to fit; the surface micro-villi structure increases the contact area with the blade, enhances the de-icing ability, and improves the de-icing efficiency.

[0031] Reference Figure 2 and Figure 3There are two connecting belts 201, which are sleeved on the outside of the two cleaning sheets 200 and arranged in parallel. Tightening the two ends of the connecting belt 201 can make the cleaning sheet 200 fit the curved surface of the blade, and the two connecting belts 201 can be independently controlled to retract and extend; by tightening the two ends, the cleaning sheet 200 is fitted to the blade surface, and the retraction and extension can be independently controlled to adapt to the different shapes of the blade surface. The two connecting belts 201 are arranged in parallel, and pressure can be applied to the cleaning sheet 200 from different directions to ensure the fitting effect. When the cleaning sheet 200 passes through areas with different blade thicknesses, the connecting belt 201 is automatically retracted and extended, driving the cleaning sheet 200 to adaptively fit, eliminating cleaning blind spots, and enabling the cleaning sheet 200 to fit closely to the blade surface, thereby improving the comprehensiveness and effectiveness of de-icing.

[0032] Reference Figure 3 and Figure 4 , the control seat 300 is slidably connected to the inner cavity 101 of the wind turbine blade 100; as a carrier of the retractable mechanism, it slides in the inner cavity 101 of the wind turbine blade 100, and plays the role of supporting and moving the retractable mechanism, so that the retractable mechanism can adjust the retracted state of the connecting belt 201 as the cleaning sheet 200 moves, realize the movement of the retractable mechanism inside the blade, and ensure that the retractable control of the connecting belt 201 can respond in real time to the fitting requirements of the cleaning sheet 200 at different positions on the blade surface, thereby improving the coordination and stability of the operation of the cleaning device.

[0033] Reference Figure 5 and Figure 6 Two sets of retraction and extension mechanisms are provided on the control seat 300, and each set of retraction and extension mechanisms controls one end of the two connecting belts 201 on the same side for retraction and extension; controlling the retraction and extension of the connecting belts 201 is the key actuator for the cleaning sheet 200 to adaptively fit the blade surface. The two sets of retraction and extension mechanisms respectively control the two connecting belts 201 on the same side to achieve independent retraction and extension control. By precisely controlling the retraction and extension of the connecting belts 201, the cleaning sheet 200 can maintain a good fit in different shape areas on the blade surface, thereby improving the cleaning effect and avoiding the problem of low cleaning efficiency caused by poor fitting.

[0034] Reference Figure 5 and Figure 6There are two control chambers 301 in the control seat 300, and each group of retracting and extending mechanisms is respectively arranged in the control chamber 301. Each group of retracting and extending mechanisms includes two groups of independently operating force storage components. The two groups of force storage components are both arranged in the control chamber 301, and each group of force storage components is connected to one end of the corresponding connecting belt 201 for controlling the retraction and extension of the connecting belt 201; the control chamber 301 provides an installation space for the force storage components in the retracting and extending mechanism, protects and supports the internal components, and separates the retracting and extending mechanisms at the same time, ensuring that each group of retracting and extending mechanisms operates independently without interfering with each other, ensuring the stable operation of the force storage components, preventing external factors from affecting their performance, and realizing that the two groups of force storage components independently control the retraction and extension of the connecting belt 201, thereby improving the flexibility and accuracy of the cleaning device control.

[0035] Reference Figure 3 and Figure 4 An electric slide 102 is installed on the inner wall of the inner cavity 101, and the electric slide 102 is connected to the control seat 300.

[0036] Reference Figure 7 and Figure 8 The power storage component includes: a winding wheel 302, one end of the connecting belt 201 is wound on the winding wheel 302; a first gear 306, mounted on the winding wheel 302; a second gear 307, mounted in the control chamber 301, the second gear 307 is engaged with the first gear 306; a third gear 309, coaxially mounted on the second gear 307; a movable plate 311, mounted in the control chamber 301, a rack 310 is mounted on the bottom of the movable plate 311, the rack 310 is engaged with the third gear 309, and an elastic member 312 is mounted on the top of the movable plate 311, one end of the elastic member 312 is connected to the inner wall of the control chamber 301.

[0037] The automatic retraction and extension of the connecting belt 201 is achieved through the cooperation of gear transmission and the elastic member 312. The winding wheel 302 is used to wind the connecting belt 201. The first, second and third gears constitute the transmission system. The movable plate 311 and the elastic member 312 provide power and reset functions. By utilizing the characteristics of gear transmission, the small displacement of the movable plate 311 is converted into a large rotation of the winding wheel 302, thereby achieving efficient retraction and extension of the connecting belt 201; the elastic member 312 enables the movable plate 311 to automatically reset, ensuring the continuity and stability of the retraction and extension of the connecting belt 201, and adapting to changes in the complex shape of the blade surface. The elastic member 312 adopts a disc spring group or a pneumatic cylinder, and the pre-pressure can be adjusted in the range of 50-200N.

[0038] The winding wheel 302 serves as the winding component of the connecting belt 201. Its rotation realizes the retraction and extension of the connecting belt 201. It is the direct executor of the retraction and extension action of the connecting belt 201. Through the rotation of the winding wheel 302, the retraction and extension length of the connecting belt 201 is accurately controlled, so that the cleaning sheet 200 can adjust the fitting state in time according to the changes in the surface shape of the blade, thereby improving the response speed and cleaning effect of the cleaning device.

[0039] The first gear 306, the second gear 307 and the third gear 309 constitute a three-stage stroke amplification mechanism, wherein the pitch circle diameter of the second gear 307 is twice that of the first gear 306. The stroke amplification is achieved through the gear transmission ratio, and the smaller displacement of the movable plate 311 is converted into a larger rotation angle of the winding wheel 302, thereby realizing the effective retraction and extension of the connecting belt 201; utilizing the mechanical advantage of the gear transmission, the larger retraction and extension of the connecting belt 201 is achieved with a smaller displacement of the movable plate 311, thereby improving the working efficiency of the power storage component, reducing the energy required for driving, and ensuring the accuracy of the retraction and extension of the connecting belt 201.

[0040] The movable plate 311 is engaged with the third gear 309 through the rack 310, and moves when subjected to force, driving the gear transmission to realize the retraction and extension of the connecting belt 201; the elastic member 312 provides a reset force for the movable plate 311, so that the movable plate 311 can return to the initial position when not subjected to external force, thereby ensuring the cyclic operation of the force storage component; the movement of the movable plate 311 drives the gear transmission to realize the retraction and extension function of the connecting belt 201; the reset effect of the elastic member 312 ensures that the force storage component can continuously respond to changes in the shape of the blade surface, timely adjust the retraction and extension state of the connecting belt 201, and maintain a good fit between the cleaning sheet 200 and the blade surface.

[0041] Reference Figure 6 and Figure 7 A first fixing rod 303 is installed in the control cavity 301 , and the first gears 306 in the two groups of power storage components are both installed on the first fixing rod 303 .

[0042] The inner ring of the winding wheel 302 is installed with a first mounting sleeve 305 . The first mounting sleeve 305 is sleeved on the first fixing rod 303 . The first gear 306 is installed on the first fixing rod 303 .

[0043] A second fixing rod 304 is installed in the control cavity 301 , and the second gears 307 in the two groups of power storage assemblies are both installed on the second fixing rod 304 .

[0044] The inner ring of the second gear 307 is installed with a second mounting sleeve 308 . The second mounting sleeve 308 is sleeved on the second fixing rod 304 . The third gear 309 is installed on the second fixing rod 304 .

[0045] The first fixing rod 303 and the second fixing rod 304 provide installation support for the first gear 306 and the second gear 307 to ensure stable operation of the gears, prevent the gears from shaking or shifting during the transmission process, ensure the stability and accuracy of the transmission system, improve the reliability of the gear transmission, reduce transmission errors, and ensure the accuracy and stability of the retraction and extension action of the connecting belt 201, so that the cleaning sheet 200 can stably fit the blade surface for cleaning.

[0046] The first mounting sleeve 305 and the second mounting sleeve 308 are used to connect the winding wheel 302, the gear and the fixed rod, and play the role of positioning and reducing friction, so that the winding wheel 302 and the gear can rotate flexibly on the fixed rod, while ensuring the coaxiality and stability of the installation, reducing the friction resistance of the winding wheel 302 and the gear during rotation, improving the rotation efficiency, reducing component wear, extending the service life of the power storage assembly, and ensuring the long-term and stable operation of the retraction and extension function of the connecting belt 201.

[0047] A through hole is provided on the wall of the inner cavity 101 of the wind turbine blade 100, and the connecting belt 201 passes through the through hole and is connected to the cleaning sheet 200. The through hole is provided on the back of the wind turbine blade 100, which does not affect the external structure and aerodynamic shape of the blade, thereby ensuring the normal operation of the wind power generation function. The through hole provides a channel for the connecting belt 201, so that the connecting belt 201 can pass through the inner cavity 101 of the wind turbine blade 100 and be connected to the cleaning sheet 200, thereby realizing the control of the cleaning sheet 200 by the retractable mechanism in the control seat 300, ensuring that the connection path of the connecting belt 201 is unobstructed, and enabling the retractable mechanism to effectively control the fitting state of the cleaning sheet 200, while avoiding interference between the connecting belt 201 and the wall of the blade inner cavity 101, thereby ensuring the normal operation of the cleaning device.

[0048] The first gear 306 , the second gear 307 and the third gear 309 in the power storage assembly constitute a three-stage stroke amplification mechanism, wherein the pitch circle diameter of the second gear 307 is twice that of the first gear 306 .

[0049] The cleaning sheet 200 is a flexible silica gel-based composite material with a micro-hair structure on its surface.

[0050] There are two electric slides 102, which are symmetrically arranged on the inner walls on both sides of the inner cavity 101. The electric slides 102 provide power for the control seat 300, so that it slides in the inner cavity 101 of the wind turbine blade 100, driving the cleaning sheet 200 to move along the surface of the blade to achieve comprehensive cleaning of the blade surface. The two symmetrical settings can make the control seat 300 evenly stressed and run more smoothly, and accurately control the moving speed and position of the control seat 300, thereby driving the cleaning sheet 200 to move uniformly and stably on the blade surface, ensuring that the cleaning sheet 200 can comprehensively and evenly clean the blade surface, thereby improving cleaning efficiency and cleaning quality.

[0051] During use, the electric slide 102 is powered on and started. In the initial state, the control seat 300 is located at the starting position of the inner cavity 101 of the wind turbine blade 100. The power storage components in the two sets of retracting and extending mechanisms are in the initial state. The elastic member 312 has a certain pre-pressure, which keeps the connecting belt 201 at a certain degree of tightening. The two cleaning sheets 200 are initially attached to the surface of the wind turbine blade 100. The electric slide 102 starts working. Since it is symmetrically arranged on the inner walls of the inner cavity 101 on both sides, it provides a stable and uniform driving force for the control base 300, driving the control base 300 to slide along a preset path in the inner cavity 101 of the wind turbine blade 100. The movement of the control base 300 synchronously drives the two sets of retracting and extending mechanisms installed on it to move. When the cleaning sheet 200 moves with the control base 300 through different shaped areas on the surface of the wind turbine blade 100, the shape changes of the blade surface, such as thickness changes, will generate forces of different directions and magnitudes on the cleaning sheet 200. This force is transmitted to the connecting belt 201 through the cleaning sheet 200, causing the connecting belt 201 to have a tendency to stretch or relax. Taking the cleaning sheet 200 passing through the thicker blade area as an example, the connecting belt 201 is stretched, pulling the winding wheel 302 to rotate, driving the first gear 306 to rotate. Since the first gear 306 is engaged with the second gear 307, and the diameter of the second gear 307 is 2 times that of the first gear 306, the second gear 307 is rotated. times, the rotation of the first gear 306 will cause the second gear 307 to rotate at a smaller angular velocity and a larger torque, and the coaxial third gear 309 will rotate accordingly. The third gear 309 is engaged with the rack 310 at the bottom of the movable plate 311, driving the movable plate 311 to overcome the pre-pressure of the elastic member 312 and move upward. The elastic member 312 is compressed to store elastic potential energy. When the cleaning sheet 200 passes through the thinner area of ​​the blade, the elastic member 312 releases the stored elastic potential energy, pushing the movable plate 311 to move downward. Through the transmission of the rack 310, the third gear 309, the second gear 307, and the first gear 306, the winding wheel 302 is driven to rotate in the opposite direction, tightening the connecting belt 201, so that the cleaning sheet 200 always fits the blade surface; During the adaptive retraction and extension of the connecting belt 201, the two symmetrically arranged cleaning blades 200 always closely adhere to the complex aerodynamic surface of the wind turbine blade 100. The cleaning blades 200 are made of a flexible silicone-based composite material and have a micro-hair structure on the surface. They can effectively contact and remove ice debris from the blade surface, cleaning the blade from both sides simultaneously, expanding the cleaning coverage and improving cleaning efficiency. Driven by the electric slide 102, the control seat 300 continues to slide along the inner cavity 101 of the wind turbine blade 100, driving the cleaning sheet 200 to traverse the entire blade surface. During the movement, the retraction and extension mechanism changes in real time according to the shape of the blade surface, and accurately controls the retraction and extension of the connecting belt 201 through the power storage component to keep the cleaning sheet 200 in a fitted state, thereby achieving comprehensive and efficient cleaning of the blade surface. When the control seat 300 moves to the end position of the inner cavity 101 of the wind turbine blade 100, the cleaning work on the blade surface is completed, the electric slide 102 stops running, the control seat 300 stays at the end point, and the elastic member 312 in the power storage component returns to the initial pre-compression state, ready for the next cleaning work.

[0052] In summary, compared with the existing technology, it has the following beneficial effects: Through the design of the flexible cleaning sheet 200 and the independently retractable connecting belt 201, a close fit between the cleaning component and the blade surface is achieved. The cleaning sheet 200 adopts a flexible silicone-based composite material and can adapt to the deformation of the blade surface; the two parallel arranged and independently controllable retraction and extension connecting belts 201 can automatically adjust the tightening degree according to the changes in the blade surface shape. When the cleaning sheet 200 passes through areas with different blade thicknesses, the connecting belt 201 cooperates with the elastic member 312 through the gear transmission of the power storage component to achieve adaptive retraction and extension, driving the cleaning sheet 200 to fit closely, eliminating cleaning blind spots, and ensuring comprehensive cleaning.

[0053] Two symmetrically arranged cleaning sheets 200 clean from both sides of the blade at the same time, expanding the cleaning coverage; and through the adaptive retraction and extension of the connecting belt 201, the cleaning sheet 200 always fits tightly to the surface of the blade, can effectively contact and remove pollutants, and improve cleaning efficiency. The three-stage stroke amplification mechanism composed of the first gear 306, the second gear 307 and the third gear 309 in the power storage component converts the smaller displacement of the movable plate 311 into a larger rotation angle of the winding wheel 302, realizing the efficient retraction and extension of the connecting belt 201, so that the cleaning sheet 200 can quickly respond to changes in the shape of the blade surface.

[0054] The various components of the cleaning device are integrated inside the wind turbine blade 100, and the through holes are opened on the back of the blade. The connecting belt 201 and other components will not affect the external structure and aerodynamic shape of the blade, ensuring the normal operation of the wind power generation function and avoiding the external cleaning device damaging the blade structure and affecting the power generation efficiency or causing safety hazards.

[0055] Thus, although the invention has been described herein with reference to specific embodiments thereof, freedom of modification, various changes and substitutions are contemplated within the foregoing disclosure, and it should be understood that in some cases, some features of the invention will be employed without the corresponding use of other features without departing from the scope and spirit of the claimed invention. Thus, many modifications may be made to adapt a particular environment or material to the true scope and spirit of the invention. The invention is not intended to be limited to the specific terminology used in the claims below and / or to the specific embodiments disclosed as the best mode contemplated for carrying out the invention, but the invention is intended to include any and all embodiments and equivalents falling within the scope of the appended claims. Thus, the scope of the invention will be determined solely by the appended claims.

Claims

1. A wind turbine blade cleaning device, characterized in that: include: A wind turbine blade (100) having an inner cavity (101) formed therein; Two cleaning sheets (200) are symmetrically arranged on the surface of the wind turbine blade (100); There are two connecting belts (201), which are sleeved on the outside of the two cleaning sheets (200) and arranged in parallel. Tightening the two ends of the connecting belt (201) can make the cleaning sheets (200) fit the blade curved surface, and the two connecting belts (201) can be independently controlled to be retracted and extended; A control seat (300) is slidably connected to the inner cavity (101) of the wind turbine blade (100); Two sets of retractable mechanisms are provided on the control seat (300), and each set of retractable mechanisms controls one end of two connecting belts (201) on the same side to retract or extend; Two control chambers (301) are provided in the control seat (300), and each set of retractable mechanisms is respectively arranged in the control chamber (301). Each set of retractable mechanisms includes two sets of independently operated power storage components, and both sets of power storage components are arranged in the control chamber (301). Each set of power storage components is connected to one end of the corresponding connecting belt (201) and is used to control the retraction and extension of the connecting belt (201); An electric slide (102) is installed on the inner wall of the inner cavity (101), and the electric slide (102) is connected to the control seat (300).

2. The wind turbine blade cleaning device according to claim 1, characterized in that: The power storage component includes: A winding wheel (302), one end of the connecting belt (201) is wound around the winding wheel (302); a first gear (306) mounted on the winding wheel (302); a second gear (307) mounted in the control chamber (301), the second gear (307) meshing with the first gear (306); A third gear (309) is coaxially mounted on the second gear (307); A movable plate (311) is installed in the control cavity (301). A rack (310) is installed at the bottom of the movable plate (311). The rack (310) is engaged with the third gear (309). An elastic member (312) is installed at the top of the movable plate (311). One end of the elastic member (312) is connected to the inner wall of the control cavity (301).

3. The wind turbine blade cleaning device according to claim 2, characterized in that: A first fixing rod (303) is installed in the control chamber (301), and the first gears (306) in the two groups of power storage assemblies are both installed on the first fixing rod (303).

4. The wind turbine blade cleaning device according to claim 3, characterized in that: The inner ring of the winding wheel (302) is installed with a first mounting sleeve (305), the first mounting sleeve (305) is sleeved on the first fixing rod (303), and the first gear (306) is installed on the first fixing rod (303).

5. The wind turbine blade cleaning device according to claim 2, characterized in that: A second fixing rod (304) is installed in the control chamber (301), and the second gears (307) in the two groups of power storage assemblies are both installed on the second fixing rod (304).

6. The wind turbine blade cleaning device according to claim 5, characterized in that: The inner ring of the second gear (307) is mounted with a second mounting sleeve (308), the second mounting sleeve (308) is sleeved on the second fixed rod (304), and the third gear (309) is mounted on the second fixed rod (304).

7. The wind turbine blade cleaning device according to claim 1, characterized in that: A through hole is provided on the wall of the inner cavity (101) of the wind turbine blade (100), and the connecting belt (201) passes through the through hole and is connected to the cleaning sheet (200).

8. The wind turbine blade cleaning device according to claim 2, characterized in that: The first gear (306), the second gear (307) and the third gear (309) in the power storage assembly form a three-stage stroke amplification mechanism, wherein the pitch circle diameter of the second gear (307) is twice that of the first gear (306).

9. The wind turbine blade cleaning device according to claim 1, characterized in that: The cleaning sheet (200) is a flexible silica gel-based composite material, and a micro-fur structure is provided on the surface.

10. The wind turbine blade cleaning device according to claim 1, characterized in that: There are two electric slides (102), which are symmetrically arranged on the inner walls on both sides of the inner cavity (101).

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