Multi-point driving photovoltaic cleaning device

Abstract

The invention discloses a multi-point driving photovoltaic cleaning device which comprises protection covers, a transmission mechanism and a cleaning mechanism, the two protection covers are arranged at the upper end and the lower end of a photovoltaic panel, each protection cover is provided with a cavity, and a sliding part capable of moving in the cavity is arranged in each cavity; the transmission mechanism comprises a plurality of first fixed rods, a first movable plate and a second movable plate, the plurality of first fixed rods are arranged on the light-facing surface of the photovoltaic panel, the first fixed rods are pivotally connected with the first end of the first movable plate, the second end of the first movable plate is pivotally connected with the second movable plate, and the second fixed rods are arranged on the light-facing surface of the photovoltaic panel. The cleaning mechanism comprises a first connecting rod, a third movable plate and a cleaning plate, the first connecting rod is connected with the second movable plate and the third movable plate, and the cleaning plate is arranged at the bottom of the third movable plate and attached to the light facing face of the photovoltaic panel. The multi-point driving photovoltaic cleaning device has the advantage of being good in cleaning effect.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic cleaning technology, and more particularly to a multi-point driven photovoltaic cleaning device. Background Technology

[0002] For large-scale photovoltaic power plants, manual cleaning of photovoltaic panels presents several challenges. First, it requires a large workforce to shorten cleaning time, leading to labor-intensive operations and difficulties in personnel management. Second, even skilled cleaning teams exhibit varying levels of expertise, making the cleaning process difficult to control and resulting in inconsistent cleaning outcomes and varying panel cleanliness. Third, improper manual cleaning can damage the module glass, affecting the panel's light transmittance and lifespan, ultimately impacting the power plant's power generation efficiency. Existing mechanical cleaning devices suffer from fixed cleaning trajectories, creating blind spots in corners and edges. They also cannot adapt to the panel's tilt angle, resulting in poor contact with the panel, excessive friction, or missed areas. Summary of the Invention

[0003] This invention is based on the inventor's discovery and understanding of the following facts and problems: manual cleaning has poor results, and mechanical cleaning has drawbacks such as cleaning dead spots and poor adhesion. This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, embodiments of this invention propose a multi-point driven photovoltaic cleaning device, which has the advantage of good cleaning effect.

[0004] According to an embodiment of the present invention, a multi-point driven photovoltaic cleaning device includes a protective cover, a transmission mechanism, and a cleaning mechanism. Two protective covers are arranged at the upper and lower ends of the photovoltaic panel. Each protective cover has a cavity, and a sliding member movable within the cavity is provided. The transmission mechanism includes a first fixed rod, a first movable plate, and a second movable plate. A plurality of first fixed rods are arranged on the light-facing surface of the photovoltaic panel. The first fixed rod is pivotally connected to a first end of the first movable plate, and the second end of the first movable plate is pivotally connected to the second movable plate. The cleaning mechanism includes a first connecting rod, a third movable plate, and a cleaning plate. The first connecting rod is connected to the second movable plate and the third movable plate, respectively. The cleaning plate is arranged at the bottom of the third movable plate and is in contact with the light-facing surface of the photovoltaic panel.

[0005] The multi-point driven photovoltaic cleaning device according to embodiments of the present invention has the advantage of good cleaning effect. This application has the following advantages: the transmission mechanism and the cleaning mechanism work together to achieve a large cleaning range with minimal overlap, resulting in good cleaning effect on photovoltaic panels.

[0006] In some embodiments, the protective cover is provided with a sliding groove extending along the width direction of the photovoltaic panel, and the slider passes through the sliding groove and is connected to the first movable plate.

[0007] In some embodiments, the extension direction of the first connecting rod is perpendicular to the light-facing surface of the photovoltaic panel, and the two ends of the first connecting rod are pivotally connected to the second movable plate and the third movable plate, respectively.

[0008] In some embodiments, the first fixing rod is fixedly connected to the protective cover.

[0009] In some embodiments, the sliding member includes a driving device, a driving plate, a second connecting rod, a connecting plate, and a fourth movable plate. The driving device is throttle-connected to the driving plate. The driving plate is connected to the first end of the second connecting rod. The second end of the second connecting rod is connected to the fourth movable plate. The first end of the fourth movable plate is connected to the bottom of the second movable plate. The fourth movable plate is pivotally connected to the first fixed rod. Both ends of the connecting plate are respectively connected to a second connecting rod.

[0010] In some embodiments, a first limiting block is further included, which is slidably fitted onto the connecting plate, and a second fixing rod is provided on the top of the first limiting block, the second fixing rod being connected to the protective cover.

[0011] In some embodiments, the driving device includes a servo motor, an eccentric wheel, a movable rod, a limiting plate, a second limiting block, and a protrusion. The output end of the servo motor is connected to the eccentric wheel via a transmission. The first end of the movable rod is connected to the driving plate, and the second end of the movable rod is adjacent to the eccentric wheel. A protrusion is provided on the side of the limiting plate adjacent to the eccentric wheel. The limiting plate is fixedly connected to the movable rod. The second limiting block is sleeved on the movable rod. The two ends of the spring are respectively connected to the limiting plate and the second limiting block. The second limiting block is connected to the protective cover.

[0012] In some embodiments, the output end of the servo motor is fixed with a threaded rod, which meshes with a gear sleeved on a limiting rod, and the eccentric wheel is arranged on the top of the limiting rod.

[0013] In some embodiments, a spring is fitted over the first connecting rod, and the two ends of the spring abut against the second movable plate and the third movable plate, respectively.

[0014] In some embodiments, the system further includes support rods, wherein a plurality of support rods are respectively arranged at the four corners of the photovoltaic panel and extend in a direction away from the photovoltaic panel. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a multi-point driven photovoltaic cleaning device according to an embodiment of the present invention.

[0016] Figure 2 This is a top view schematic diagram of the photovoltaic panel of the multi-point driven photovoltaic cleaning device according to an embodiment of the present invention.

[0017] Figure 3 This is a schematic diagram of the structure of the sliding component of the multi-point driven photovoltaic cleaning device according to an embodiment of the present invention.

[0018] Figure 4 yes Figure 3 A magnified view of a portion of region A in the middle.

[0019] Reference numerals: 1. Protective cover; 2. Photovoltaic panel; 3. First fixed rod; 4. First movable plate; 5. Second movable plate; 6. First connecting rod; 7. Third movable plate; 8. Cleaning plate; 9. Drive plate; 10. Second connecting rod; 11. Connecting plate; 12. Fourth movable plate; 13. First limiting block; 14. Second fixed rod; 15. Servo motor; 16. Eccentric wheel; 17. Movable rod; 18. Limiting plate; 19. Second limiting block; 20. Protrusion; 21. Threaded rod; 22. Gear; 23. Support rod; 24. Limiting rod. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0021] According to an embodiment of the present invention, a multi-point driven photovoltaic cleaning device includes a protective cover 1, a transmission mechanism, and a cleaning mechanism. Two protective covers 1 are arranged at the upper and lower ends of a photovoltaic panel 2. Each protective cover 1 has a cavity, and a sliding member that can move within the cavity is provided. The transmission mechanism includes a first fixed rod 3, a first movable plate 4, and a second movable plate 5. A plurality of first fixed rods 3 are arranged on the light-facing surface of the photovoltaic panel 2. The first fixed rod 3 is pivotally connected to the first end of the first movable plate 4, and the second end of the first movable plate 4 is pivotally connected to the second movable plate 5. The cleaning mechanism includes a first connecting rod 6, a third movable plate 7, and a cleaning plate 8. The first connecting rod 6 is connected to the second movable plate 5 and the third movable plate 7 respectively. The cleaning plate 8 is arranged at the bottom of the third movable plate 7 and is in contact with the light-facing surface of the photovoltaic panel 2. Two protective covers 1 are respectively arranged on the upper and lower edges of the photovoltaic panel 2. The protective covers 1 protect the photovoltaic panel 2 and extend horizontally along the width direction of the photovoltaic panel 2. The length of the protective covers 1 is the same as or slightly larger than the width of the photovoltaic panel 2, ensuring that the movement range of the sliding component can cover the entire width of the photovoltaic panel 2 without cleaning dead corners. The cavity is rectangular and provides a moving channel for the sliding component. A part of the sliding component protrudes from the protective cover 1 to drive the transmission mechanism and the cleaning mechanism. The first fixing rods 3 are distributed in a rectangular array on the light-facing surface of the photovoltaic panel 2. There are at least four first fixing rods 3, with two at the top and two at the bottom. The first fixing rods 3 serve as positioning rods on the photovoltaic panel 2, providing a starting point for cleaning, facilitating the confirmation of the initial cleaning position, and avoiding repeated cleaning. The first movable plate 4 and the second movable plate 5 are connected by hinges or pins to achieve a rotational connection between the two. When the cleaning plate 8 encounters minor protrusions on the surface of the photovoltaic panel 2, such as stubborn stains or slight deformation, the first movable plate 4 and the second movable plate 5 reduce the impact by rotating at a small angle, preventing the cleaning plate 8 from rigidly squeezing or scratching the surface of the photovoltaic panel 2 and thus avoiding damage. The rotatable connection between the first movable plate 4 and the second movable plate 5 can also adapt to the tilt angle of the photovoltaic panel 2, ensuring that the cleaning plate 8 adheres to the surface of the photovoltaic panel 2 without being suspended (uncleaned) or over-adhered (increasing frictional resistance) due to the tilt of the photovoltaic panel 2. The two ends of the first connecting rod 6 can be ball joints, and ball seats are provided on the second movable plate 5 and the third movable plate 7 to complete the rotatable connection between the first connecting rod 6 and the second movable plate 5 and the third movable plate 7. The length of the first connecting rod 6 is limited within a certain range to ensure that the cleaning plate 8 just contacts the surface of the photovoltaic panel 2.

[0022] The cleaning board 8 can be a rubber board with a corrugated anti-slip texture on its surface, which increases the scratching force on the surface of the photovoltaic panel 2 and effectively removes dirt such as dust, bird droppings, and leaf debris. In some embodiments, a sliding groove extending along the width direction of the photovoltaic panel 2 is provided on the protective cover 1, and a sliding member passes through the sliding groove and is connected to the first movable plate 4.

[0023] Specifically, the sliding groove extends along the width of the photovoltaic panel 2, with a length consistent with the width of the photovoltaic panel 2, ensuring that the sliding component's movement range covers the entire width of the photovoltaic panel 2, eliminating cleaning dead zones. The width of the sliding groove opening is 0.2-0.5mm larger than the cross-sectional width of the sliding component, providing sufficient movement space while preventing excessive gaps that could cause the sliding component to wobble. The sliding component is divided into three sections: one section is located inside the cavity of the protective cover 1, the middle section passes through the sliding groove, and the other end is located outside the protective cover 1. The end located inside the cavity can receive power from the drive device, while the outer section is connected to the first movable plate 4 to transmit power. The sliding groove constrains the trajectory of the sliding component, ensuring that the cleaning plate 8 maintains a consistent cleaning path each time, preventing deviation due to component wear or external interference.

[0024] Optionally, the inner wall of the sliding groove is coated with a wear-resistant polytetrafluoroethylene coating to reduce the coefficient of friction between the sliding parts and the groove wall, thereby reducing wear caused by long-term movement and improving the smoothness of sliding.

[0025] In some embodiments, the first connecting rod 6 extends perpendicularly to the light-facing surface of the photovoltaic panel 2, and the two ends of the first connecting rod 6 are pivotally connected to the second movable plate 5 and the third movable plate 7, respectively.

[0026] Specifically, the extension direction of the first connecting rod 6 is perpendicular to the light-facing surface of the photovoltaic panel 2, forming a 90° angle with the surface of the photovoltaic panel 2. The length of the first connecting rod 6 needs to be adjusted according to the distance between the second movable plate 5 and the light-facing surface of the photovoltaic panel 2 to ensure that the cleaning plate 8 can naturally adhere to the surface of the photovoltaic panel 2 (without suspension or excessive compression) when the cleaning mechanism is not in operation. During operation, even if the second movable plate 5 experiences slight displacement due to transmission, the vertically extended posture ensures that the cleaning plate 8 always maintains stable contact with the surface of the photovoltaic panel 2. The two ends of the first connecting rod 6 can be rotatably connected to the second movable plate 5 and the third movable plate 7 via pins, or through a ball joint structure, with the ball joint structure having a larger rotation range. The vertically extended first connecting rod 6 can evenly convert horizontal power into vertical pressure on the surface of the photovoltaic panel 2, preventing uneven pressure from causing excessive cleaning and damage to the photovoltaic panel 2, or insufficient cleaning and residue residue in certain areas. The rotatable connection at both ends of the first connecting rod 6 allows for fine-tuning of the impact force through small-angle rotation, avoiding hard expansion and extending service life. It also prevents stress concentration from causing the first connecting rod 6 to break due to long-term use.

[0027] In some embodiments, the first fixing rod 3 is fixedly connected to the protective cover 1.

[0028] Specifically, the end of the first fixing rod 3 is fixedly connected to the protective cover 1. The first fixing rod 3 can be fixed by bolts or welding. One end of the first fixing rod 3 is fixed to the side wall of the protective cover 1 near the inner side of the photovoltaic panel 2, and the other end extends to the central area of ​​the light-facing surface of the photovoltaic panel 2. Multiple first fixing rods 3 are evenly distributed along the length of the protective cover 1, with the spacing adapted to the width of the photovoltaic panel 2, ensuring that the support points for the transmission mechanism are symmetrically distributed and avoiding uneven force on one side. The connection between the first fixing rod 3 and the protective cover 1 improves the fixing effect, and the first fixing rod 3 provides a fixed fulcrum for the first movable plate 4. Rigid fixing reduces the relative movement between the first fixing rod 3 and the protective cover 1, and better transmits power.

[0029] In some embodiments, the sliding member includes a driving device, a driving plate 9, a second connecting rod 10, a connecting plate 11, and a fourth movable plate 12. The driving device is connected to the driving plate 9 in a transmission manner. The driving plate 9 is connected to the first end of the second connecting rod 10. The second end of the second connecting rod 10 is connected to the fourth movable plate 12. The first end of the fourth movable plate 12 is connected to the bottom of the second movable plate 5. The fourth movable plate 12 is pivotally connected to the first fixed rod 3. Both ends of the connecting plate 11 are respectively connected to a second connecting rod 10.

[0030] Specifically, the drive device provides power. The second connecting rod 10 is a rigid rod that acts as a pivot. The drive plate 9 is connected to the second connecting rod 10 to move it. The second connecting rod 10 can move the fourth movable plate 12. The fourth movable plate 12 is rotatably connected to the first fixed rod 3. Driven by the second connecting rod 10, the fourth movable plate 12 rotates around the first fixed rod 3. The connecting plate 11 connects the two connecting rods to transmit power. Thus, the drive device can simultaneously drive two fourth movable plates 12 through the connecting plate 11. The power transmission path is that the drive device outputs power to the drive plate 9, which swings horizontally back and forth. The second connecting rod 10 moves synchronously with the drive plate 9. The second connecting rod 10 drives the connecting plate 11, which in turn drives the second connecting rod 10 at the other end to move in coordination. The second connecting rod 10 drives the fourth movable plate 12 to move, and the fourth movable plate 12 drives the second movable plate 5 to move, which in turn drives the cleaning plate 8 to work. The connecting plate 11 connects at least two second connecting rods 10 in series to form a whole, ensuring uniform power transmission and allowing at least two cleaning plates 8 on the photovoltaic panel 2 to move synchronously, avoiding overlapping or missing cleaning tracks due to the lag of a single drive.

[0031] In some embodiments, a first limiting block 13 is further included, which is slidably sleeved on the connecting plate 11. A second fixing rod 14 is provided on the top of the first limiting block 13, and the second fixing rod 14 is connected to the protective cover 1.

[0032] Specifically, the first limiting block 13 is a rectangular frame with a through hole inside for the connecting plate 11 to pass through. The cross-sectional shape of the through hole matches the cross-sectional shape of the connecting plate 11, ensuring that the connecting plate 11 can slide smoothly relative to the first limiting block 13 while avoiding shaking due to excessive gap. The first limiting block 13 is welded or threaded to the second fixing rod 14. The bottom of the first limiting block 13 can be rounded to prevent scratching the inner wall of the protective cover 1.

[0033] The second fixing rod 14 is a rigid rod, such as a metal rod. The second fixing rod 14 is welded, threaded, or plugged into the top inner wall of the protective cover 1. When the sliding part is working, the connecting plate 11 moves horizontally back and forth with the second connecting rod 10. The second fixing rod 14 fixes the limiting block to the protective cover 1. The first limiting block 13 constrains the movement of the connecting plate 11, preventing it from deviating from the preset horizontal trajectory and avoiding vertical displacement or rotation of the connecting plate 11. At the same time, the sliding cooperation between the limiting block and the connecting plate 11 can buffer the small vibrations during the transmission process and reduce the hard impact between the components.

[0034] Optionally, a Hall sensor can be installed on the protective cover 1 or the second fixing rod 14, and a magnet or magnetic component can be installed on the connecting plate 11. Multiple magnetic components can be evenly distributed. When the connecting plate 11 slides relative to the first limit block 13, the Hall sensor records the sliding speed and position in real time by sensing the magnet signal and transmits the data to the controller. If the sliding speed is abnormal, the controller determines that it may be due to wear of the limit block or jamming of the connecting plate 11, and immediately issues a fault warning to remind maintenance personnel to handle it in time to avoid equipment damage and downtime.

[0035] In some embodiments, the driving device includes a servo motor 15, an eccentric wheel 16, a movable rod 17, a limiting plate 18, a second limiting block 19, and a protrusion 20. The output end of the servo motor 15 is connected to the eccentric wheel 16 for transmission. The first end of the movable rod 17 is connected to the drive plate 9. The second end of the movable rod 17 is adjacent to the eccentric wheel 16. The limiting plate 18 is provided with a protrusion 20 on one side adjacent to the eccentric wheel 16. The limiting plate 18 is fixedly connected to the movable rod 17. The second limiting block 19 is sleeved on the movable rod 17. The two ends of the spring are respectively connected to the limiting plate 18 and the second limiting block 19. The second limiting block 19 is connected to the protective cover.

[0036] Specifically, the eccentric wheel 16 is a circular metal wheel with a flange on its edge. The rotation center of the eccentric wheel 16 is offset from the geometric center by 5-10mm. The offset of the eccentric wheel 16 determines the reciprocating stroke of the movable rod 17. Wear-resistant ceramic plates are embedded in the contact area between the wheel surface of the eccentric wheel 16 and the movable rod 17 to reduce long-term friction and wear. The protrusion 20 has an arc-shaped contact surface to ensure that it is always in close contact with the eccentric wheel 16 and to prevent slippage. The spring is used to provide sufficient thrust to keep the movable rod 17 in contact with the eccentric wheel 16. When the eccentric wheel 16 rotates, the spring absorbs the impact through its own extension and contraction. The second limiting block 19 is a hollow sleeve used to limit the radial sway of the movable rod 17 while ensuring that the movable rod 17 slides smoothly.

[0037] When the servo motor 15 drives the eccentric wheel 16 to rotate, the eccentric wheel 16 pushes the movable rod 17 to perform horizontal reciprocating motion: During the push stroke, the protruding part of the eccentric wheel 16 contacts the movable rod 17, overcoming the spring force to push the movable rod 17 to move, which drives the subsequent transmission mechanism through the drive plate 9; During the return stroke, the eccentric wheel 16 rotates to the non-protruding part, the spring returns to its original position and pulls the limit plate 18 (driving the movable rod 17) to move, completing one reciprocating cycle. The protrusion 20 contacts the edge of the eccentric wheel 16 at the end of the push stroke, forming a mechanical limit to prevent excessive displacement of the movable rod 17 and damage to the component. The servo motor 15 converts the rotational motion into linear motion of the movable rod 17 through the eccentric wheel 16, and the elastic deformation of the spring absorbs energy, keeping the load on the eccentric wheel 16 from the movable rod 17 within a safe range and preventing the motor from burning out.

[0038] In some embodiments, the output end of the servo motor 15 is fixed with a threaded rod 21, which meshes with a gear 22 sleeved on a limit rod, and an eccentric wheel 16 is arranged on the top of the limit rod.

[0039] Specifically, the threaded rod 21 meshes with the gear 22, and the power transmission from the threaded rod 21 to the gear 22 is unidirectional. Reverse rotation of the gear 22 cannot drive the threaded rod 21 to rotate, ensuring unidirectional power transmission and protecting the servo motor 15. One end of the limit rod is rotatably connected to the protective cover 1, and the other end is welded to or bolted to the eccentric wheel 16, ensuring that the eccentric wheel 16 rotates synchronously when the limit rod rotates. The precise meshing of the threaded rod 21 and the gear 22 ensures minimal error in reciprocating motion, preventing overlap or leakage due to transmission deviation. The vertical transmission arrangement of the servo motor 15 saves installation space.

[0040] Optionally, multiple gears 22 are fitted onto the limiting rod. The number of teeth of different gears 22 is different. The rotation speed is changed by changing the gear 22 that meshes with the threaded rod 21, thereby adjusting the output particle size. For light stains, a small speed ratio is selected to achieve high speed and low torque to ensure cleaning efficiency, while for heavy stains, a large speed ratio is selected to achieve low speed and high torque to ensure cleaning effect.

[0041] In some embodiments, a spring is fitted over the first connecting rod 6, and the two ends of the spring abut against the second movable plate 5 and the third movable plate 7, respectively.

[0042] Specifically, a compression spring is fitted over the first connecting rod 6. The inner diameter of the spring is slightly larger than the outer diameter of the first connecting rod 6 to ensure that the spring can smoothly extend and retract along the rod without radial wobble. After assembly, the compression spring is in a slightly pre-compressed state, which not only prevents the spring from loosening but also reserves deformation space for subsequent buffering. When the cleaning plate 8 encounters protrusions on the surface of the photovoltaic panel 2 (such as stubborn stains or small foreign objects) during sliding, the cleaning plate 8 will transmit the impact force to the third movable plate 7. The third movable plate 7 compresses the spring, and the spring absorbs the impact energy through elastic deformation, preventing the impact force from being directly transmitted to the second movable plate 5 and the transmission mechanism. At the same time, it provides continuous and gentle contact pressure to the cleaning plate 8 through reaction force, ensuring that the stains are effectively removed. The spring ensures that the cleaning plate 8 is in contact with the photovoltaic panel 2 throughout the process and stabilizes the cleaning pressure to avoid over-cleaning or under-cleaning.

[0043] In some embodiments, the system also includes support rods 23, with multiple support rods 23 respectively arranged at the four corners of the photovoltaic panel 2 and extending in a direction away from the photovoltaic panel 2.

[0044] Specifically, the length of the support rod 23 is designed according to the installation height requirements of the photovoltaic panel 2, ensuring that there is sufficient gap between the bottom of the photovoltaic panel 2 and the installation foundation (such as the roof or ground) to facilitate air circulation, heat dissipation, and cleaning equipment operation. The support rods 23 are arranged in a rectangular array at the four corners, forming a stable four-point support structure. The support rods 23 distribute the weight of the photovoltaic panel 2 itself and the external load to avoid excessive local stress.

[0045] In some embodiments, a flexible scraper (such as silicone rubber) is added to the edge of the cleaning plate 8 to prevent cleaning fluid from overflowing and to perform secondary scraping, reducing water residue. The flexible scraper has a triangular or wedge-shaped cross-section. The flexible scraper is designed to provide sufficient support and adhere tightly to the surface of the photovoltaic panel 2. The flexible scraper is embedded in a groove at the edge of the cleaning plate 8 and can be secured with bolts to prevent it from falling off. The close contact between the scraper and the surface of the photovoltaic panel 2 forms a sealing line, confining the cleaning fluid to the inner area of ​​the scraper under the push of the cleaning plate 8, reducing overflow. The scraper can effectively remove water stains and other contaminants from the surface of the photovoltaic panel 2. Cleaning fluid can be sprayed onto the photovoltaic panel surface by other equipment, such as drones, to enhance the cleaning effect.

[0046] In some embodiments, a rubber lip is provided in the sliding groove, and the rubber lip is arranged along the extension direction of the sliding groove to block sand and dust.

[0047] Specifically, the rubber lip can be made of nitrile rubber. The opening of the lip faces the outside of the sliding groove, and its length is the same as that of the sliding groove. The edge of the lip abuts against the sliding component and fits against the sliding component as it moves. This not only does not affect the smooth movement of the sliding component, but also prevents sand and dust from entering the sliding groove.

[0048] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0049] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0050] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0051] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0052] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0053] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A multi-point driven photovoltaic cleaning device, characterized in that, include: The protective cover, two of which are arranged at the upper and lower ends of the photovoltaic panel, each protective cover having a cavity, and a sliding member that can move within the cavity is provided inside the cavity; The transmission mechanism includes a first fixed rod, a first movable plate, and a second movable plate. A plurality of first fixed rods are arranged on the light-facing surface of the photovoltaic panel. The first fixed rods are pivotally connected to a first end of the first movable plate, and the second end of the first movable plate is pivotally connected to the second movable plate. The cleaning mechanism includes a first connecting rod, a third movable plate, and a cleaning plate. The first connecting rod is connected to the second movable plate and the third movable plate, respectively. The cleaning plate is arranged at the bottom of the third movable plate and is attached to the light-facing surface of the photovoltaic panel.

2. The multi-point driven photovoltaic cleaning device according to claim 1, characterized in that, The protective cover is provided with a sliding groove extending along the width direction of the photovoltaic panel, and the sliding member passes through the sliding groove and is connected to the first movable plate.

3. The multi-point driven photovoltaic cleaning device according to claim 1, characterized in that, The first connecting rod extends perpendicularly to the light-facing surface of the photovoltaic panel, and its two ends are pivotally connected to the second movable plate and the third movable plate, respectively.

4. The multi-point driven photovoltaic cleaning device according to claim 1, characterized in that, The first fixing rod is fixedly connected to the protective cover.

5. The multi-point driven photovoltaic cleaning device according to claim 1, characterized in that, The sliding component includes a driving device, a driving plate, a second connecting rod, a connecting plate, and a fourth movable plate. The driving device is throttle-connected to the driving plate. The driving plate is connected to the first end of the second connecting rod. The second end of the second connecting rod is connected to the fourth movable plate. The first end of the fourth movable plate is connected to the bottom of the second movable plate. The fourth movable plate is pivotally connected to the first fixed rod. Both ends of the connecting plate are respectively connected to a second connecting rod.

6. The multi-point driven photovoltaic cleaning device according to claim 5, characterized in that, It also includes a first limiting block, which is slidably fitted onto the connecting plate. A second fixing rod is provided on the top of the first limiting block, and the second fixing rod is connected to the protective cover.

7. The multi-point driven photovoltaic cleaning device according to claim 1, characterized in that, The driving device includes a servo motor, an eccentric wheel, a movable rod, a limiting plate, a second limiting block, and a protrusion. The output end of the servo motor is connected to the eccentric wheel. The first end of the movable rod is connected to the driving plate, and the second end of the movable rod is adjacent to the eccentric wheel. A protrusion is provided on the side of the limiting plate adjacent to the eccentric wheel. The limiting plate is fixedly connected to the movable rod. The second limiting block is sleeved on the movable rod. The two ends of the spring are respectively connected to the limiting plate and the second limiting block. The second limiting block is connected to the protective cover.

8. The multi-point driven photovoltaic cleaning device according to claim 7, characterized in that, The output end of the servo motor is fixed with a threaded rod, which meshes with a gear sleeved on the limit rod, and the eccentric wheel is arranged on the top of the limit rod.

9. The multi-point driven photovoltaic cleaning device according to claim 1, characterized in that, A spring is fitted over the first connecting rod, and the two ends of the spring abut against the second movable plate and the third movable plate, respectively.

10. The multi-point driven photovoltaic cleaning device according to claim 1, characterized in that, It also includes support rods, with multiple support rods respectively arranged at the four corners of the photovoltaic panel and extending in a direction away from the photovoltaic panel.

Images