A photovoltaic panel cleaning device

Abstract

A photovoltaic panel cleaning device is applied to photovoltaic panels separated by I-shaped guide rails. It includes a walking module for moving along the I-shaped guide rails; a cleaning module is mounted on the walking module for cleaning the photovoltaic panels by contact with the guide rails; the walking module includes a secondary output shaft, a first motor, a main output shaft, a first pulley, walking wheels, and a base; the first motor drives the secondary and main output shafts through gear meshing; the secondary and main output shafts each drive a first pulley, and each first pulley drives a walking wheel on one side of the I-shaped guide rail via a belt, causing the walking wheels on both sides of the I-shaped guide rail to rotate in opposite directions; the device offers good cleaning performance, prevents jamming, tolerates uneven photovoltaic panels, saves water, and ensures the cleaning module adheres closely to the photovoltaic panels.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic panel cleaning technology in photovoltaic power plants, and specifically to a photovoltaic panel cleaning device. Background Technology

[0002] Photovoltaic panels convert solar radiation into electrical energy. A photovoltaic power station typically includes a transformer, inverter, photovoltaic array, and related auxiliary facilities. A photovoltaic power station deploys a large number of photovoltaic panels, which are arranged in rows and columns to maximize utilization. However, photovoltaic panels need direct sunlight to generate electricity. Due to wind and dust, dust settles on the photovoltaic panels, which reduces power generation efficiency. At the same time, when mixed with rainwater, the dust adheres to the photovoltaic panels, and the resulting pollutants corrode the panels. Therefore, people usually need to clean the photovoltaic panels regularly.

[0003] Currently, cleaning photovoltaic panels is usually done manually. However, manual cleaning is not only inefficient but also inadequate. Due to varying terrain or improper installation of photovoltaic panel mounting brackets, especially for rows of continuously arranged photovoltaic panels, unevenness caused by deformation or vibration at the joints between adjacent panels can easily lead to jamming and wheel tipping when using conventional cleaning robots. Since photovoltaic panels are inclined surfaces, it is difficult for robotic vacuum cleaners to climb and clean them. Conventional cleaning robots are generally designed for flat surfaces, but photovoltaic panels are inclined, making them unsuitable for cleaning with conventional robots. Cleaning photovoltaic panels usually requires water as a medium to remove dust, but water sources are generally scarce near photovoltaic power stations. Therefore, improving water utilization and reducing losses urgently needs to be addressed. Summary of the Invention

[0004] In view of this, the purpose of this invention is to address the problems of traditional photovoltaic panels lacking cleaning devices, how cleaning devices can overcome uneven photovoltaic panels, how to complete cleaning on tilted photovoltaic panels, and how to reduce cleaning water consumption. The invention provides a cleaning device that can continuously clean tilted rows of photovoltaic panels, and overcomes the problem of uneven photovoltaic panels getting stuck during movement. It also features the characteristics of recycling and reusing cleaning water.

[0005] This application aims to address one of the problems in the background art.

[0006] The technical solution adopted in this invention is: a photovoltaic panel cleaning device, applied to photovoltaic panels separated by I-shaped guide rails, including a walking module, wherein the walking module is used to move along the I-shaped guide rails;

[0007] The walking module is equipped with a cleaning module, which is used to clean the photovoltaic panels by resisting contact.

[0008] The walking module includes a secondary output shaft, a first motor, a main output shaft, a first pulley, walking wheels, and a base. The first motor drives the secondary output shaft and the main output shaft through gear meshing. The secondary output shaft and the main output shaft each drive a first pulley, and each first pulley drives the walking wheel on one side of the I-shaped guide rail through a belt, so that the walking wheels on both sides of the I-shaped guide rail rotate in opposite directions.

[0009] The technical solution provided in this application also has the following technical features:

[0010] Preferably, the walking wheels are driven by a walking drive shaft, which is connected to the guide wheel mounting box via bearings; the bearing limiting blocks on both sides of the I-shaped guide rail are connected by a first spring; the bearing limiting blocks, bearings, and the first spring are set in the movable groove of the guide wheel mounting box, and the first spring is used to reset after the distance between the walking wheels on both sides of the I-shaped guide rail changes, so that the walking wheels abut against the I-shaped guide rail.

[0011] Preferably, the belt is arranged in a butterfly shape.

[0012] Preferably, the belt abuts against the belt top pulley to obtain tension, which counteracts the belt looseness and tension caused by the change in the distance between the traveling wheels. One end of the belt top pulley is connected to the movable rod, and the other end of the movable rod can be slidably placed into the limiting block. A second spring is sleeved on the movable rod so that the belt top pulley has a tendency to reset after being squeezed by the belt.

[0013] Preferably, a cleaning box is provided at the lower part of the cleaning module, and the cleaning box is connected to a rotating block; the rotating block is provided on the walking module, and the rotating block is used to rotate the cleaning module so that the working part of the cleaning module fits the photovoltaic panel.

[0014] Preferably, the cleaning module includes a cleaning box and two brush rollers, which are arranged side by side inside the cleaning box. When driven, the two brush rollers rotate in opposite directions. The rotation of the brush rollers rubs against the photovoltaic panel, causing dust to detach from the photovoltaic panel and move towards the center of the cleaning box.

[0015] Preferably, a third pulley is provided at one end of the brush roller, and a second motor is provided on the cleaning box. The second motor drives the bevel gear connecting shaft, which drives the second bevel gears at both ends to mesh with the first bevel gear. The first bevel gear drives the second pulley to rotate, and the second pulley drives the third pulley to rotate through a belt. The third pulley coaxially drives the brush roller, and the two brush rollers rotate in opposite directions.

[0016] Preferably, the brush roller is equipped with a fan unit, which is used to adsorb the dust cleaned by the brush roller into the dust filter box. Water in the filter box is injected into the rear of the dust filter box by a water pump. The water mixed with dust flows through the filter cotton under the action of gravity and enters the filter box.

[0017] The dust filter box is equipped with a filter screen for filtering dust; a vibration motor is installed on the filter screen to shake off the dust adhering to the filter screen and make it fall into the dust filter box.

[0018] Preferably, the vibration motor is integrated with the cleaning box to drive the brush roller to vibrate.

[0019] Preferably, the I-shaped guide rail is provided with a flow guide groove, which is located at the bottom and / or middle of the I-shaped guide rail.

[0020] The beneficial effects of this invention are:

[0021] 1. This invention utilizes the movable groove within the guide wheel mounting box to allow the bearing limiting block and bearing to move, resulting in variable travel clearance. This ensures the traveling wheel rolls continuously along the I-shaped guide rail without getting stuck. Since the traveling wheel ascends along the I-shaped guide rail, it does not involve the undulations of the photovoltaic panel. During the change in the travel wheel clearance on both sides of the I-shaped guide rail, the distance between the first pulleys of the belt changes, causing the belt to be either too loose or too tight. Therefore, adaptive adjustment of the belt is required. This adjustment is achieved through the cooperation of the second spring, the movable rod, the belt top pulley, and the limiting block. The variable elasticity of the belt top pulley abuts against the belt, thereby preventing the belt from being too tight or too loose and meeting the driving requirements.

[0022] 2. In the cleaning process, if the two photovoltaic panels are not level, the present invention uses a rotating block and a cleaning box to work together. When the rotating block rotates the brush roller, it keeps the cleaning module parallel to the corresponding photovoltaic panel, avoiding jamming and preventing the cleaning module from tilting up. This ensures that the brush roller in the cleaning box makes uniform contact with the photovoltaic panel, thereby ensuring the cleaning quality and preventing the cleaning device from getting stuck.

[0023] 3. This invention utilizes a fan unit and a vibration motor. The fan unit draws dust into the dust filter box, where some of it falls to the bottom right. A water pump then pumps water from the filter box into the dust filter box via pipes and connectors. Because the photovoltaic panel is tilted, the water flows downwards, carrying away the dust. The filter cotton at the bottom filters the water mixed with dust, and the clean water enters the filter box for the pump to draw and rinse. The remaining dust adheres to the filter screen, and the vibration motor vibrates the screen, dislodging the dust, which is then carried into the filter box by water. Clean air is exhausted through the right end of the ventilation duct, preventing dust from flying around, improving cleaning quality, and avoiding the need for large amounts of water. Attached Figure Description

[0024] Figure 1 This is a perspective view of the photovoltaic panel cleaning device of the present invention in use.

[0025] Figure 2This is a perspective view of the walking module of a photovoltaic panel cleaning device according to the present invention;

[0026] Figure 3 This is an exploded view of the walking module of a photovoltaic panel cleaning device according to the present invention;

[0027] Figure 4 This is a cross-sectional view of the guide wheel mounting box of a photovoltaic panel cleaning device according to the present invention;

[0028] Figure 5 This is a perspective view of the installation state of the belt top pulley of a photovoltaic panel cleaning device according to the present invention;

[0029] Figure 6 This is a schematic diagram of the cleaning module of a photovoltaic panel cleaning device according to the present invention;

[0030] Figure 7 This is an exploded view of the cleaning module of a photovoltaic panel cleaning device according to the present invention;

[0031] Figure 8 This is a schematic diagram of the water filter tank of a photovoltaic panel cleaning device according to the present invention;

[0032] Figure 9 This is a three-dimensional structural diagram of the dust filter box of a photovoltaic panel cleaning device according to the present invention;

[0033] Figure 10 This is a cross-sectional view of the cleaning box of a photovoltaic panel cleaning device according to the present invention;

[0034] Figure 11 This is a top view of the cleaning box of a photovoltaic panel cleaning device according to the present invention.

[0035] Explanation of the reference numerals in the figure:

[0036] 1. Cleaning module

[0037] 2. Walking module

[0038] 3. Photovoltaic panel mounting bracket

[0039] 4. Wheels

[0040] 5. Fixing plate

[0041] 6. Rotating block

[0042] 7. Secondary output shaft

[0043] 8. First motor

[0044] 9. Main output shaft

[0045] 10. Cover plate

[0046] 11. Belt pulley

[0047] 12. First pulley

[0048] 13. Belt

[0049] 14. Guide wheel mounting box

[0050] 15. Walking wheels

[0051] 16. Travel drive shaft

[0052] 17. Base

[0053] 18. I-shaped guide rail

[0054] 19. Bearing limiting block

[0055] 20. First spring

[0056] 21. Bearings

[0057] 22. Roller

[0058] 23. The second spring

[0059] 24. Movable lever

[0060] 25. Restriction Block

[0061] 26. Brush roller

[0062] 27. Lid

[0063] 28. Cleaning box

[0064] 29. Vibration motor

[0065] 30. Filter screen

[0066] 31. First bevel gear

[0067] 32. Second pulley

[0068] 33. Restriction stent

[0069] 34. Third connecting shaft

[0070] 35. Bevel gear connecting shaft

[0071] 36. Connecting shaft limiting block

[0072] 37. Second motor

[0073] 38. Ventilation ducts

[0074] 39. Fan Unit

[0075] 40. Second bevel gear

[0076] 41. Water filter tank

[0077] 42. Dust filter box

[0078] 43. Third pulley

[0079] 44. Filter cotton

[0080] 45. Water pump. Detailed Implementation

[0081] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. These embodiments are for illustrative purposes only and are not intended to limit the scope of the invention.

[0082] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., 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 the invention and for simplifying the description, and do not 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 the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0083] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0084] Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0085] like Figure 1 and Figure 8 A photovoltaic panel cleaning device is applied to photovoltaic panels separated by an I-shaped guide rail 18, including a walking module 2, which is used to move along the I-shaped guide rail 18.

[0086] The walking module 2 is equipped with a cleaning module 1, which is used to clean the photovoltaic panels by contact.

[0087] The walking module 2 includes a secondary output shaft 7, a first motor 8, a main output shaft 9, a first pulley 12, a walking wheel 15, and a base 17. The first motor 8 drives the secondary output shaft 7 and the main output shaft 9 through gear meshing. The secondary output shaft 7 and the main output shaft 9 each drive a first pulley 12, and each first pulley 12 drives the walking wheel 15 on one side of the I-shaped guide rail 18 through a belt 13, so that the walking wheels 15 on both sides of the I-shaped guide rail 18 turn in opposite directions.

[0088] When implemented, this application has the following characteristics: it can move and walk along the inclined photovoltaic panels and complete cleaning; depending on the layout, the photovoltaic panels are arranged continuously, and the center of the photovoltaic panels is set with I-shaped guide rails 18 to divide them, so that continuous walking and cleaning can be achieved.

[0089] Specifically, such as Figure 4 The walking wheel 15 is driven by the walking drive shaft 16, which is connected to the guide wheel mounting box 14 via the bearing 21. The bearing limiting blocks 19 on both sides of the I-shaped guide rail 18 are connected by the first spring 20. The bearing limiting blocks 19, the bearing 21, and the first spring 20 are set in the movable groove of the guide wheel mounting box 14. The first spring 20 is used to reset after the distance between the walking wheels 15 on both sides of the I-shaped guide rail 18 changes, so that the walking wheels 15 abut against the I-shaped guide rail 18. This structure allows the walking wheel 15 to roll along the side of the I-shaped guide rail 18. During the rolling process of the walking wheel 15 along the I-shaped guide rail 18, it realizes movement along the photovoltaic panel and completes cleaning. Conventional rolling wheels travel along the photovoltaic panel. This structure overcomes the jamming of ordinary rolling wheels caused by the unevenness of the photovoltaic panel by the walking wheel 15 rolling along the I-shaped guide rail 18, and can also travel along the inclined photovoltaic panel. The best arrangement is that the photovoltaic panel is divided into upper and lower parts by the I-shaped guide rail 18.

[0090] Specifically, such as Figure 3 The two belt pulleys 11 are matched with belts 13, which are arranged in a butterfly shape. This arrangement enables the traveling wheels 15 on the same side of the I-shaped guide rail 18 to rotate at the same speed and in the same direction, while the traveling wheels 15 on the other side of the I-shaped guide rail 18 also rotate at the same speed. The traveling wheels on both sides turn in opposite directions, so that the traveling wheels 15 can travel along the I-shaped guide rail 18 in the same direction.

[0091] Specifically, such as Figure 3 and Figure 5 The belt 13 is tensioned by contacting the belt top pulley 11, which counteracts the looseness and tension of the belt 13 caused by the change in the distance between the traveling wheels 15. The belt top pulley 11 is connected to one end of the movable rod 24, and the other end of the movable rod 24 is slidably placed into the limiting block 25. A second spring 23 is sleeved on the movable rod 24 so that the belt top pulley 11 has a tendency to return to its original position after being squeezed by the belt 13. This tension adjustment is used to prevent the transmission from becoming loose and to achieve stable transmission.

[0092] Specifically, such as Figure 2 , Figure 3 , Figure 6 , Figure 11 The cleaning module 1 is provided with a cleaning box 28 at its lower part, and the cleaning box 28 is connected to a rotating block 6. The rotating block 6 is provided on the walking module 2. The rotating block 6 is used to rotate the cleaning module 1 so that the working part of the cleaning module 1 fits the photovoltaic panel, avoids gap changes, and affects cleaning. The fit is tight to achieve better cleaning.

[0093] Specifically, such as Figure 11 The cleaning module 1 includes a cleaning box 28 and two brush rollers 26. The brush rollers 26 are arranged side by side inside the cleaning box 28, and the two brush rollers 26 are driven to turn in opposite directions. The brush rollers 26 rotate and rub against the photovoltaic panel, causing the dust to detach from the photovoltaic panel and move towards the center of the cleaning box 28. After the dust is removed, it is concentrated in a preset position for convenient centralized treatment.

[0094] Specifically, such as Figure 6 , Figure 7 , Figure 10 , Figure 11 A third pulley 43 is provided at one end of the brush roller 26. A second motor 37 is provided on the cleaning box 28. The second motor 37 drives the bevel gear connecting shaft 35. The bevel gear connecting shaft 35 drives the second bevel gears 40 at both ends to mesh with the first bevel gear 31. The first bevel gear 31 drives the second pulley 32 to rotate. The second pulley 32 drives the third pulley 43 to rotate through the belt. The third pulley 43 coaxially drives the brush roller 26, and the two brush rollers 26 rotate in opposite directions, so that the dust removed is concentrated inward.

[0095] Specifically, such as Figure 6 , Figure 7 , Figure 8 , Figure 9 The brush roller 26 is equipped with a fan unit 39. The fan unit 39 is used to adsorb the dust cleaned by the brush roller 26 and put it into the dust filter box 42. The water in the water filter box 41 is injected into the rear of the dust filter box 42 by the water pump 45. The water mixed with dust flows through the filter cotton 44 under the action of gravity and enters the water filter box 41.

[0096] The dust filter box 42 is equipped with a filter screen 30 for filtering dust; a vibration motor 29 is installed on the filter screen 30 to shake off the dust adhering to the filter screen 30 and make it fall into the dust filter box 42; the dust is adsorbed and washed with water to make the cleaning effect better, and the water is used to reduce or eliminate dust.

[0097] Specifically, such as Figure 6 , Figure 7The vibration motor 29 is integrated with the cleaning box 28 to drive the brush roller 26 to vibrate. The vibration improves the effect of removing dust from the photovoltaic panel by friction, which is more effective and has a higher removal rate than simple rolling friction.

[0098] Specifically, the I-shaped guide rail 18 is provided with a flow guide groove, which is located at the bottom and / or middle of the I-shaped guide rail 18. This structure is for the purpose of discharging excess water quantitatively or at regular intervals. When the water is replaced during operation, the water is directly discharged through the flow guide groove, which does not pollute or has little impact on the photovoltaic panel.

[0099] In general, this application is used as follows: First, an I-shaped guide rail 18 is set on the photovoltaic panel fixing bracket 3 between the photovoltaic panels, and the walking module 2 is snapped onto the I-shaped guide rail 18. At the same time, the cleaning module 1 is located above the photovoltaic panel, and the wheels 4 are attached to the edge of the photovoltaic panel. By opening the first motor 8 on the cover plate 10, the first motor 8 drives the main output shaft 9 to rotate. The main output shaft 9 and the auxiliary output shaft 7 are meshed and driven, so that the main output shaft 9 and the auxiliary output shaft 7 rotate in different directions. The main output shaft 9 and the auxiliary output shaft 7 will each drive a first pulley 12 to rotate, and drive the walking drive shaft 16 through the belt 13, so that the walking wheel 15 rolls along the side of the I-shaped guide rail 18.

[0100] If the connection between the front and rear photovoltaic panels is uneven, the movable groove in the guide wheel mounting box 14 allows the walking drive shaft 16, bearing limiting block 19 and bearing 21 to move back and forth. During the movement, the first spring 20 will deform, and the walking wheel 15 will continue to roll along the I-shaped guide rail 18 without being stuck.

[0101] During the movement of the drive shaft 16, the distance between the left and right first pulleys 12 and the middle first pulley 12 changes. If the distance increases, the belt 13 will press against the belt top pulley 11, and the belt top pulley 11 will press against the second spring 23 and the movable rod 24. While the second spring 23 is compressed, the movable rod 24 will slide along the limiting block 25, thereby preventing the belt 13 from being damaged due to tension. If the distance decreases, the second spring 23 will press against the belt top pulley 11, thereby preventing the belt 13 from becoming too loose.

[0102] During the cleaning process, if the two photovoltaic panels are not level, the rotating block 6 on the fixed plate 5 will drive the cleaning box 28 to rotate, so that the cleaning module 1 is parallel to the corresponding photovoltaic panel, avoiding jamming and preventing the cleaning module 1 from tilting up, so that the brush roller 26 in the cleaning box 28 makes uniform contact with the photovoltaic panel, thereby ensuring the cleaning quality.

[0103] During the cleaning process, the second motor 37 on the cleaning box 28 is turned on, which drives the bevel gear connecting shaft 35 to rotate. The second bevel gear 40 on the connecting shaft limiting block 36 is driven, causing the first bevel gear 31 to rotate.

[0104] Driven by the belt, the second pulley 32 and the third pulley 43 rotate, which in turn drives the roller shaft 22 to rotate the brush roller 26 in relative rotation. The left and right brush rollers 26 rotate counterclockwise and clockwise respectively, so that the dust on the photovoltaic panel is removed from the photovoltaic panel and moves towards the bottom center of the cleaning box 28.

[0105] By turning on the fan unit 39 and vibration motor 29 on the ventilation duct 38, the fan unit 39 will suck the dust that has been cleaned off by the brush roller 26 into the dust filter box 42. When the dust enters the right side of the dust filter box 42, some of it will fall to the bottom of the right side. By turning on the water pump 45 in the water filter box 41, the water pump 45 will inject the water in the water filter box 41 into the rear of the dust filter box 42 through the pipe and connector.

[0106] Because the photovoltaic panel is tilted, water will flow down along the inside of the dust filter box 42 and carry away the dust. The water with dust will be filtered by the filter cotton 44, so that the water pump 45 can draw clean water. Another part of the dust will adhere to the filter screen 30. The vibration motor 29 can drive the filter screen 30 to vibrate, thereby shaking off the dust on the filter screen 30 and letting it fall into the right side of the dust filter box 42, where it will continue to be carried by water into the water filter box 41.

[0107] Clean air is discharged through the right port of the ventilation duct 38, thus preventing dust from flying and improving the cleaning quality. When there is too much dust in the water filter tank 41, the dust can be cleaned by opening the cover 27 and cleaning the filter cotton 44. The base 17 serves to connect the guide wheel mounting box 14.

[0108] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A photovoltaic panel cleaning device, applied to photovoltaic panels separated by an I-shaped guide rail (18), characterized in that, Includes a walking module (2), which is used to move along the I-shaped guide rail (18); The walking module (2) is equipped with a cleaning module (1), which is used to clean the photovoltaic panel by resisting contact. The walking module (2) includes a secondary output shaft (7), a first motor (8), a main output shaft (9), a first pulley (12), a walking wheel (15), and a base (17); the first motor (8) drives the secondary output shaft (7) and the main output shaft (9) through gear meshing; the secondary output shaft (7) and the main output shaft (9) respectively drive a first pulley (12), and each first pulley (12) drives the walking wheel (15) on one side of the I-shaped guide rail (18) through a belt (13), so that the walking wheels (15) on both sides of the I-shaped guide rail (18) turn in opposite directions; The walking wheels (15) are driven by the walking drive shaft (16), which is connected to the guide wheel mounting box (14) via the bearing (21); the bearing limiting blocks (19) on both sides of the I-shaped guide rail (18) are connected by the first spring (20); the bearing limiting blocks (19), the bearing (21), and the first spring (20) are set in the movable groove of the guide wheel mounting box (14), and the first spring (20) is used to reset after the distance between the walking wheels (15) on both sides of the I-shaped guide rail (18) changes, so that the walking wheels (15) abut against the I-shaped guide rail (18); The belt (13) is arranged in a butterfly shape; It also includes a belt pulley (11), the belt (13) abuts against the belt pulley (11) to get tension, which counteracts the looseness and tension of the belt (13) caused by the change in the distance between the walking wheels (15). The belt pulley (11) is connected to one end of the movable rod (24), and the other end of the movable rod (24) can be slidably placed into the limiting block (25). A second spring (23) is sleeved on the movable rod (24) so ​​that the belt pulley (11) has a tendency to reset after being squeezed by the belt (13).

2. The photovoltaic panel cleaning device according to claim 1, characterized in that, The cleaning module (1) is provided with a cleaning box (28) at the bottom, and the cleaning box (28) is connected to a rotating block (6); the rotating block (6) is provided on the walking module (2), and the rotating block (6) is used to rotate the cleaning module (1) so that the working part of the cleaning module (1) fits the photovoltaic panel.

3. The photovoltaic panel cleaning device according to claim 1, characterized in that, The cleaning module (1) includes a cleaning box (28) and two brush rollers (26). The brush rollers (26) are arranged side by side in the cleaning box (28), and the two brush rollers (26) are driven to turn in opposite directions. The brush rollers (26) rotate and rub against the photovoltaic panel, causing the dust to detach from the photovoltaic panel and move towards the center of the cleaning box (28).

4. The photovoltaic panel cleaning device according to claim 1, characterized in that, A third pulley (43) is provided at one end of the brush roller (26), and a second motor (37) is provided on the cleaning box (28). The second motor (37) drives the bevel gear connecting shaft (35), which drives the second bevel gears (40) at both ends to mesh with the first bevel gear (31). The first bevel gear (31) drives the second pulley (32) to rotate. The second pulley (32) drives the third pulley (43) to rotate through the belt. The third pulley (43) coaxially drives the brush roller (26), and the two brush rollers (26) rotate in opposite directions.

5. A photovoltaic panel cleaning device according to claim 1, characterized in that, The brush roller (26) is equipped with a fan unit (39). The fan unit (39) is used to adsorb the dust cleaned by the brush roller (26) and put it into the dust filter box (42). The water in the water filter box (41) is injected into the rear of the dust filter box (42) by the water pump (45). The water mixed with dust flows through the filter cotton (44) under the action of gravity and enters the water filter box (41). The dust filter box (42) is equipped with a filter screen (30) for filtering dust; a vibration motor (29) is installed on the filter screen (30) for shaking off the dust adhering to the filter screen (30) and causing it to fall into the dust filter box (42).

6. A photovoltaic panel cleaning device according to claim 5, characterized in that, The vibration motor (29) is integrated with the cleaning box (28) and drives the brush roller (26) to vibrate.

7. A photovoltaic panel cleaning device according to claim 1, characterized in that, The I-shaped guide rail (18) is provided with a flow guide groove, which is located at the bottom and / or middle of the I-shaped guide rail (18).

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