Solar photovoltaic panel cleaning device

Abstract

The utility model provides a solar photovoltaic panel cleaning device, which belongs to the field of photovoltaic technology, is arranged on a photovoltaic panel and can slide along the surface of the photovoltaic panel, the solar photovoltaic panel cleaning device comprises a shell, a first cleaning mechanism and a wiping mechanism, the first cleaning mechanism and the wiping mechanism are arranged on the shell, the first cleaning mechanism is used for spraying water to the photovoltaic panel and then scraping dirt, and the wiping mechanism is used for wiping the photovoltaic panel. The wiping mechanism is used for wiping the surface of the photovoltaic panel after the dirt is scraped off; the wiping mechanism comprises a motor, a downward pressing assembly and a cotton block wiping piece, the motor is arranged on the shell, the downward pressing assembly is connected with the motor, the downward pressing assembly moves up and down in the vertical direction, and the cotton block wiping piece is wiped by the downward pressing assembly when the photovoltaic panel cleaning device moves along the photovoltaic panel. The cotton block wiping piece is arranged on the surface of the photovoltaic panel, the cotton block wiping piece can continuously make contact with the surface of the photovoltaic panel, compact soil and bird droppings adhering to the surface of the photovoltaic panel can be wiped away through the cotton block wiping piece, secondary manual removal of dirt on the surface of the photovoltaic panel is avoided, and the dust removal efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaics, and in particular relates to a solar photovoltaic panel cleaning device. Background Art

[0002] Photovoltaic panels, also known as solar panels or photovoltaic panels, refer to devices that use the photovoltaic effect of semiconductor materials under light conditions to directly convert solar energy into electrical energy. Most of the materials are silicon. Electricity can be generated wherever there is sunlight. Therefore, solar photovoltaic power generation is suitable for a variety of occasions, from large power stations to small portable chargers.

[0003] The surface of photovoltaic panels needs to be cleaned to reduce dust from blocking sunlight. However, there are extremely stringent requirements for cleaning photovoltaic panels. Vibration cleaning is not applicable to photovoltaic panels because they are made of hard materials and vibration will damage them. It is difficult to use natural rainfall or water spraying in Gobi or desert areas. The existing method of cleaning photovoltaic panels is to use a mobile robot to blow away the dust on the surface of the photovoltaic panels.

[0004] However, sand and dust that fall on the surface of some photovoltaic panels may not be washed away by the rain after a small rainfall, and the sand and water may form a mud mixture, which will completely adhere to the surface of the photovoltaic panels after drying. At the same time, there may be bird droppings and other adhesives on the surface of some photovoltaic panels. When the surface of the photovoltaic panels is blown away, the mud and bird droppings on the surface cannot be removed, resulting in a poor cleaning effect on the surface of the photovoltaic panels, and staff are required to clean the photovoltaic panels a second time. Utility Model Content

[0005] Based on this, the utility model provides a solar photovoltaic panel cleaning device to solve the problem in the prior art that the existing cleaning device cannot remove the mud and bird droppings on the surface, resulting in a poor cleaning effect on the surface of the photovoltaic panel, and the staff is required to clean the photovoltaic panel a second time.

[0006] The technical solution of the utility model to solve the above technical problems is as follows:

[0007] A solar photovoltaic panel cleaning device is arranged on the photovoltaic panel and can slide along the surface of the photovoltaic panel, comprising a shell and a first cleaning mechanism and a wiping mechanism arranged on the shell, wherein the first cleaning mechanism is used to spray water on the photovoltaic panel to scrape off dirt, and the wiping mechanism is used to wipe the surface of the photovoltaic panel after the dirt is scraped off;

[0008] The wiping mechanism includes a motor, a pressing assembly and a cotton wiping piece. The motor is arranged on the shell, the pressing assembly is connected to the motor, the pressing assembly moves up and down in a vertical direction, and the cotton wiping piece is arranged on the pressing assembly. When the pressing assembly moves downward in a vertical direction, the cotton wiping piece can fit with the photovoltaic panel.

[0009] Preferably, the first cleaning mechanism includes a water spray assembly and a scraper assembly, the water spray assembly includes a nozzle and a water tank, the nozzle is vertically arranged on the shell and is located directly above the surface of the photovoltaic panel, the water tank is arranged on the shell and is connected to the nozzle; the scraper assembly includes a strip scraper, and the strip scraper is vertically arranged on the shell.

[0010] Preferably, the pressing assembly comprises a first pressing member, a second pressing member, a third pressing member and a downward traction shaft, the first pressing member, the second pressing member and the third pressing member are arranged side by side in sequence, the downward traction shaft is connected to the motor, and drives the first pressing member, the second pressing member and the third pressing member to move vertically downward. In the first state, the first pressing member moves vertically downward to push the cotton block wiping member to move downward and fit with the surface of the photovoltaic panel, and the second pressing member and the third pressing member are located in an initial position and do not move; in the second state, the second pressing member moves vertically downward to push the cotton block wiping member to move downward and fit with the surface of the photovoltaic panel, the first pressing member returns to the initial position, and the third pressing member is located in the initial position and does not move; in the third state, the third pressing member moves vertically downward to push the cotton block wiping member to move downward and fit with the surface of the photovoltaic panel, the second pressing member returns to the initial position, and the first pressing member is located in the initial position and does not move.

[0011] Preferably, the downward traction shaft includes a rotating shaft, a first toothless gear, a second toothless gear and a third toothless gear, the rotating shaft is connected to the motor, the first toothless gear, the second toothless gear and the third toothless gear are sleeved on the rotating shaft, the first toothless gear is arranged corresponding to the first downward pressure piece, the second toothless gear is arranged corresponding to the second downward pressure piece, and the third toothless gear is arranged corresponding to the third downward pressure piece.

[0012] Preferably, the first pressing member includes a first spring tube and a first telescopic rod, the first spring tube is vertically downwardly arranged on the shell, one end of the first telescopic rod is sleeved in the first spring tube, a first rack is arranged on the first telescopic rod, the first rack can be meshed with the first toothless gear, and the other end of the first telescopic rod is hinged to the cotton block wiping member.

[0013] Preferably, the cotton block wiping piece includes an inlaid groove body and a cotton block, the inlaid groove body is arranged at an end portion of the first telescopic rod, and the cotton block is clamped in the inlaid groove body.

[0014] Preferably, the cotton block is an elastic strip sponge.

[0015] Preferably, the photovoltaic panel cleaning device further comprises an air-drying component, and the air-drying component is arranged on the shell and located directly above the cotton block wiping member.

[0016] Preferably, the air-drying component includes a fan, a blowing port and an exhaust port, the fan is arranged on the shell, the blowing ports are arranged in several groups side by side in sequence, the openings of the blowing ports are arranged vertically downward, and the exhaust port is arranged on the shell.

[0017] Compared with the prior art, the utility model has at least the following advantages:

[0018] As the photovoltaic panel cleaning device moves along the photovoltaic panel, the cotton wiper will continue to contact the surface of the photovoltaic panel. The cotton wiper will wipe off the relatively compacted soil and bird droppings adhered to the surface of the photovoltaic panel, avoiding manual secondary cleaning of dirt on the surface of the photovoltaic panel and improving the dust removal efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the first view of the solar photovoltaic panel cleaning device.

[0020] Figure 2 Axonometric view of photovoltaic panels.

[0021] Figure 3 This is the front view of the photovoltaic panel.

[0022] Figure 4 This is the front view of the initial state of the press-down component.

[0023] Figure 5 This is the left view of the press-down assembly.

[0024] Figure 6 It is a top view of the press-down assembly.

[0025] Figure 7 Schematic diagram of the first toothless gear.

[0026] Figure 8 This is a second view of the photovoltaic panel cleaning device.

[0027] Fig. 9 This is the third view of the photovoltaic panel cleaning device.

[0028] In the figure: a solar photovoltaic panel cleaning device 1, a first cleaning mechanism 10, a water spray assembly 110, a nozzle 111, a water tank 112, a scraper assembly 120, a strip scraper 121, a wiping mechanism 20, a motor 210, a pressing assembly 220, a first pressing member 221, a first spring tube 2211, a first telescopic rod 2212, a first rack 2213, a second pressing member 222, a third pressing member 223, a downward traction shaft 224, a rotating shaft 2241, a first toothless gear 2242, a second toothless gear 2243, a third toothless gear 2244, a cotton block wiping member 240, a mosaic trough 241, a cotton block 242, an air drying assembly 250, a fan 251, an air outlet 252, an exhaust outlet 253, a shell 30, a photovoltaic panel 2, a roller 310, and a guide rail 320. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present invention can be combined with each other. The technical solution of the present invention will be further described below in conjunction with the drawings of the embodiments of the present invention, and the present invention is not limited to the following specific implementation methods.

[0030] It should be understood that the same or similar numbers in the drawings of the embodiments correspond to the same or similar parts. In the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom" and the like indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0031] Please see Figure 1A solar photovoltaic panel cleaning device 1 is arranged on a photovoltaic panel 2 and can slide along the surface of the photovoltaic panel 2, comprising a shell 30 and a first cleaning mechanism 10 and a wiping mechanism 20 arranged on the shell 30, wherein the first cleaning mechanism 10 is used to scrape off dirt after spraying water on the photovoltaic panel 2, and the wiping mechanism 20 is used to wipe the surface of the photovoltaic panel 2 after the dirt is scraped off; the wiping mechanism 20 comprises a motor 210, a pressing assembly 220 and a cotton block wiping piece 240, the motor 210 is arranged on the shell 30, the pressing assembly 220 is linked to the motor 210, the pressing assembly 220 moves up and down in a vertical direction, the cotton block wiping piece 240 is arranged on the pressing assembly 220, and when the pressing assembly 220 moves downward in a vertical direction, the cotton block wiping piece 240 can fit with the photovoltaic panel 2. The photovoltaic panel 2 is generally tilted at a fixed angle. Since the surface of the photovoltaic panel 2 is mostly deposited with dust, the first cleaning mechanism 10 performs a first cleaning on the surface of the photovoltaic panel 2 by spraying water to wash away the dust on the surface of the photovoltaic panel 2. As the photovoltaic panel 2 cleaning device 1 is powered on, it moves along the photovoltaic panel 2. The first cleaning mechanism 10 scrapes off the muddy and water mixture on the surface and flows along the tilted photovoltaic panel 2 to the outside of the photovoltaic panel 2. Subsequently, the wiping component 20 wipes the photovoltaic panel 2 from which the dirt has been scraped off for secondary cleaning. First, the motor 210 is started. After the motor 210 rotates, The pressing component 220 is pushed to move vertically downward, and the pressing component 220 will press the cotton wiping piece 240 during the movement down to the surface of the photovoltaic panel 2. As the photovoltaic panel cleaning device 1 moves along the photovoltaic panel 2, the relatively compacted soil and bird droppings will become soft after being blistered, and the cotton wiping piece 240 will continue to contact with the surface of the photovoltaic panel 2 and will be subjected to friction. The cotton wiping piece 240 will wipe off the relatively compacted soil and bird droppings on the surface of the photovoltaic panel 2, thereby avoiding manual secondary cleaning of dirt on the surface of the photovoltaic panel 2 and improving the dust removal efficiency.

[0032] See also Figure 1The first cleaning mechanism 10 includes a water spray assembly 110 and a scraper assembly 120. The water spray assembly 110 includes a nozzle 111 and a water tank 112. The nozzle 111 is vertically arranged on the housing 30 and is located directly above the surface of the photovoltaic panel 2. The water tank 112 is arranged on the housing 30 and is connected to the nozzle 111. It is necessary to add water to the water tank 112 regularly. The water in the water tank 112 can clean the photovoltaic panel 23-4 times. The water tank 112 is provided with There is a small water pump connected to the nozzle 111 for supplying water to the nozzle 111. The nozzle 111 is a high-pressure nozzle 111 with a certain water pressure, which can spray away most of the floating and sinking on the photovoltaic panel 2. The scraper assembly 120 includes a strip scraper 121, which is vertically arranged on the shell 30. The strip scraper 121 and the photovoltaic panel 2 are in contact with each other. The strip scraper 121 is a kind of rubber sheet, which is convenient for scraping off the mud and water mixture on the photovoltaic panel 2.

[0033] During operation, when the photovoltaic panel cleaning device 1 moves, the water pump is energized to draw water from the water tank 112, and the nozzle 111 sprays high-pressure water to clean the floating and sinking on the surface of the photovoltaic panel 2. Then, the strip scraper 121 scrapes off the mud and water mixture on the photovoltaic panel 2.

[0034] In a preferred embodiment, see Figure 1 The scraper assembly 120 is also provided with a lower adjusting member 122, and the lower adjusting member 122 is connected to the strip scraper 121 and is used to control the strip scraper 121 to move up and down; when the photovoltaic panel cleaning device 1 is installed on the shell 30, due to the difference of the photovoltaic panel 2, the strip scraper 121 cannot fit together with the surface of the photovoltaic panel 2. By adjusting the lower adjusting member 122, the strip scraper 121 is controlled to move downward, so that the strip scraper 121 and the surface of the photovoltaic panel 2 are fit together, and the dust on the surface of the photovoltaic panel 2 is scraped more cleanly. When the strip scraper 121 is damaged, the strip scraper 121 is removed from the lower adjusting member 122, and replacement is more convenient.

[0035] In one possible embodiment, see Figures 4 to 6The pressing assembly 220 includes a first pressing member 221, a second pressing member 222, a third pressing member 223 and a downward traction shaft 224. The first pressing member 221, the second pressing member 222 and the third pressing member 223 are three pressing members with the same or similar structures. The first pressing member 221, the second pressing member 222 and the third pressing member 223 are arranged side by side in sequence. The downward traction shaft 224 is connected to the motor 210 and drives the first pressing member 221, the second pressing member 222 and the third pressing member 223 to move vertically downward. In the first state, the first pressing member 221 moves vertically downward to push the cotton block wiping member 240 to move downward and move with the The surface of the photovoltaic panel 2 is in contact with the second pressing member 222 and the third pressing member 223 are located at the initial position and do not move; in the second state, the second pressing member 222 moves vertically downward to push the cotton block wiping member 240 downward and contact with the surface of the photovoltaic panel 2, the first pressing member 221 returns to the initial position, and the third pressing member 223 is located at the initial position and does not move; in the third state, the third pressing member 223 moves vertically downward to push the cotton block wiping member 240 downward and contact with the surface of the photovoltaic panel 2, the second pressing member 222 returns to the initial position, and the first pressing member 221 is located at the initial position and does not move.

[0036] In one possible embodiment, see Figure 1 and Figure 7 The downward traction shaft 224 includes a rotating shaft 2241, a first toothless gear 2242, a second toothless gear 2243 and a third toothless gear 2244. The rotating shaft 2241 is connected to the motor 210. The first toothless gear 2242, the second toothless gear 2243 and the third toothless gear 2244 are sleeved on the rotating shaft 2241. The first toothless gear 2242 is arranged corresponding to the first downward pressure piece 221, the second toothless gear 2243 is arranged corresponding to the second downward pressure piece 222, and the third toothless gear 2244 is arranged corresponding to the third downward pressure piece 223. The first toothless gear 2242, the second toothless gear 2243 and the third toothless gear 2244 have the same structure, but when the first toothless gear 2242, the second toothless gear 2243 and the third toothless gear 2244 are sleeved on the rotating shaft 2241, the toothless positions of the three toothless gears are not in the same plane, that is, the three toothless gears are staggered with each other in sequence, which facilitates the first pressing member 221, the second pressing member 222 and the third pressing member 223 to be pressed down one by one.

[0037] In one possible embodiment, see Figure 4The first pressing member 221 includes a first spring tube 2211 and a first telescopic rod 2212. The first spring tube 2211 is vertically downwardly arranged on the shell 30. One end of the first telescopic rod 2212 is sleeved in the first spring tube 2211. A first rack 2213 is arranged on the first telescopic rod 2212. The first rack 2213 can be engaged with the first toothless gear 2242. The other end of the first telescopic rod 2212 is hinged to the cotton block wiping piece, and the cotton block wiping piece is located directly above the photovoltaic panel 2. A compression spring is arranged in the first spring tube 2211, and the compression spring is connected to the first telescopic rod 2212. When the first toothless gear 2242 rotates and the first toothless gear 2242 engages with the first rack 2213, the first telescopic rod 2212 is pushed to move downward in the vertical direction, and the cotton wiping piece is pushed to fit the photovoltaic panel 2 against each other. When the first toothless gear 2242 continues to rotate, the toothless portion of the first toothless gear 2242 corresponds to the first telescopic rod 2212, so that when the first toothless gear 2242 is not engaged with the first rack 2213, the first telescopic rod 2212 is not subjected to force, and the telescopic spring is reset, driving the first telescopic rod 2212 to move upward in the vertical direction and return to its initial position.

[0038] In a preferred embodiment, the second pressing member 222 includes a second spring barrel and a second telescopic rod, the second spring barrel is vertically downwardly arranged on the housing 30, one end of the second telescopic rod is sleeved in the second spring barrel, a second rack is arranged on the second telescopic rod, the second rack can be meshed with the second toothless gear 2243, the other end of the second telescopic rod is connected to the second cotton wiping member, and the cotton wiping member is located directly above the photovoltaic panel 2. The movement process and functional relationship of the second pressing member 222 are the same or similar to those of the first pressing member 221.

[0039] In a preferred embodiment, the third pressing member 223 includes a third spring barrel and a third telescopic rod, the third spring barrel is vertically downwardly arranged on the housing 30, one end of the third telescopic rod is sleeved in the third spring barrel, the second telescopic rod is provided with a third rack, the third rack can be meshed with the third toothless gear 2244, the other end of the third telescopic rod is hinged to the cotton wiping member, and the cotton wiping member is located directly above the photovoltaic panel 2. The movement process and functional relationship of the third pressing member 223 are the same or similar to those of the first pressing member 221.

[0040] In a possible embodiment, the cotton wiping member 240 includes an inlaid groove body 241 and a cotton block 242. The inlaid groove body 241 is arranged at one end of the first telescopic rod 2212 and is mutually engaged with the first telescopic rod 2212. The cotton block 242 is engaged in the inlaid groove body 241. The cotton wiping member 240 needs to be replaced regularly, for 1-2 months. When replacing the cotton wiping member 240, the inlaid groove body 241 is first removed from the first telescopic rod 2212. Since the two are mutually engaged, the removal is more convenient. Then, the cotton wiping member 240 is removed from the inlaid groove body 241, and the inlaid groove body 241 is cleaned. A new cotton wiping member 240 is installed in the inlaid groove body 241 and on the first telescopic rod 2212. The cotton wiping member 240 is simple to use and easy to replace.

[0041] In a preferred embodiment, the cotton block 240 is an elastic strip sponge, which has strong water absorption, is not easy to be damaged, has low cost, is relatively soft, and will not scratch the surface of the photovoltaic panel.

[0042] In a preferred embodiment, the cotton block 240 is a laminated cotton cloth. After being used once, a layer of cotton cloth is removed and the cotton block 240 can be used multiple times.

[0043] In a possible embodiment, the photovoltaic panel cleaning device 1 further includes an air drying component 250, which is arranged on the housing 30 and is located directly above the cotton wiping member 240. The air drying component 250 includes a fan 251, a blowing port 252 and an exhaust port 253. The fan 251 is arranged on the housing 30, and the blowing ports 252 are arranged in a plurality of groups in sequence, and the opening of the blowing ports 252 is arranged vertically downward, and the exhaust port 253 is arranged on the housing 30. The fan 251 inhales air, compresses it and blows it, and the blowing ports 252 are arranged in a plurality of groups in sequence in sequence, and the opening of the blowing ports 252 is arranged vertically downward, and is arranged opposite to the cotton wiping member 240 and the surface of the photovoltaic panel 2, so that the cotton wiping member 240 and the surface of the photovoltaic panel 2 can be directly air-dried, and the exhaust port 253 is used to remove moisture from the surface of the cotton wiping member 240 and the photovoltaic panel 2. After blowing, the moisture remaining on the surface of the photovoltaic panel 2 will be dried, so that the surface of the photovoltaic panel 2 becomes dry, and dust is prevented from sticking to the photovoltaic panel 2.

[0044] In a preferred embodiment, the blowing outlet 252 is set to any one of groups 1, 2, 3, and 4.

[0045] Working process: First movement Working process: See Figure 1After the strip scraper 121 scrapes the mud-water mixture, some water stains will remain on the surface of the photovoltaic panel 2, so the elastic wiping cloth will further dry the surface of the photovoltaic panel 2. In the first state, the motor 210 rotates to drive the rotating shaft 2241 to rotate, and the rotating shaft 2241 drives the first toothless gear 2242, the second toothless gear 2243 and the third toothless gear 2244 to rotate. At this time, the first toothless gear 2242 is meshed with the first rack 2213. The first toothless gear 2242 rotates to drive the first rack 2213 to move downward, and drives the first telescopic rod 2212 to move downward in the vertical direction. The compression spring in the first spring tube 2211 is in an extended stressed state, and the cotton block wiping member 240 is in contact with the surface of the photovoltaic panel 2, thereby wiping the water stains on the surface of the photovoltaic panel 2.

[0046] The second movement working process: when the first toothless gear 2242 finishes engaging with the first rack 2213 and is in an empty tooth state, the first telescopic rod 2212 is not subjected to force, and the first spring tube 2211 drives the first telescopic rod 2212 and the cotton block wiper 240 to move upward in the vertical direction, while the second toothless gear 2243 and the second rack are engaged with each other, driving the second telescopic rod to move downward in the vertical direction, the compression spring in the second spring tube is in an extended stressed state, and the cotton block wiper 240 is in contact with the surface of the photovoltaic panel 2.

[0047] The third movement working process: when the second toothless gear 2243 finishes meshing with the second rack and is in an empty tooth state, the second telescopic rod is not subjected to force, and the second spring tube drives the second telescopic rod and the cotton block wiping piece to move upward in the vertical direction, and at this time, the third toothless gear 2244 and the third rack are meshed with each other, driving the third telescopic rod to move downward in the vertical direction, and the compression spring in the third spring tube is in an extended stressed state, and the cotton block wiping piece 240 is in contact with the surface of the photovoltaic panel 2. After the photovoltaic panel cleaning device 1 continues to move forward, the first toothless gear 2242 and the first rack 2213 will mesh with each other again, driving the first telescopic rod 2212 to move downward, the third toothless gear 2244 finishes meshing with the third rack and is in an empty tooth state, and the third telescopic rod moves upward in the vertical direction and returns to its initial position.

[0048] The three toothless gears sequentially drive the three telescopic rods to move downward in the vertical direction, so that the three cotton wipers 240 wipe the surface of the photovoltaic panel 2 alternately, avoiding the use of one cotton wiper for wiping for a long time. If one cotton wiper 240 is used for wiping for a long time, the cotton wiper 240 will be severely worn. The three cotton wipers 240 wipe the surface of the photovoltaic panel 2 alternately, which can greatly increase the service life of the cotton wiper 240 and can wipe off the water stains on the surface of the photovoltaic panel 2.

[0049] During the whole movement process, the fan 251 keeps working, and the air outlet 252 blows air to dry the moisture on the cotton wiping piece 240 , and at the same time, dry the moisture on the surface of the photovoltaic panel 2 , and discharge the moisture through the exhaust port 253 .

[0050] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A solar photovoltaic panel cleaning device, which is arranged on the photovoltaic panel and can slide along the surface of the photovoltaic panel, characterized in that: It comprises a shell and a first cleaning mechanism and a wiping mechanism arranged on the shell, wherein the first cleaning mechanism is used to scrape off dirt after spraying water on the photovoltaic panel, and the wiping mechanism is used to wipe the surface of the photovoltaic panel after the dirt is scraped off; The wiping mechanism includes a motor, a pressing assembly and a cotton wiping piece. The motor is arranged on the shell, the pressing assembly is connected to the motor, the pressing assembly moves up and down in a vertical direction, and the cotton wiping piece is arranged on the pressing assembly. When the pressing assembly moves downward in a vertical direction, the cotton wiping piece can fit with the photovoltaic panel.

2. A solar photovoltaic panel cleaning device as claimed in claim 1, characterized in that: The first cleaning mechanism includes a water spray assembly and a scraper assembly. The water spray assembly includes a nozzle and a water tank. The nozzle is vertically arranged on the shell and is located directly above the surface of the photovoltaic panel. The water tank is arranged on the shell and is connected to the nozzle. The scraper assembly includes a strip scraper, and the strip scraper is vertically arranged on the shell.

3. A solar photovoltaic panel cleaning device as claimed in claim 1, characterized in that: The pressing assembly comprises a first pressing member, a second pressing member, a third pressing member and a downward traction shaft, wherein the first pressing member, the second pressing member and the third pressing member are arranged side by side in sequence, and the downward traction shaft is connected to the motor and drives the first pressing member, the second pressing member and the third pressing member to move vertically downward. In a first state, the first pressing member moves vertically downward to push the cotton block wiping member to move downward and fit with the surface of the photovoltaic panel, and the second pressing member and the third pressing member are located in an initial position and do not move; in a second state, the second pressing member moves vertically downward to push the cotton block wiping member to move downward and fit with the surface of the photovoltaic panel, and the first pressing member returns to the initial position, and the third pressing member is located in the initial position and does not move; In the third state, the third pressing member moves vertically downward, pushing the cotton wiping member downward and fitting with the surface of the photovoltaic panel, the second pressing member returns to the initial position, and the first pressing member is located at the initial position and does not move.

4. A solar photovoltaic panel cleaning device as claimed in claim 3, characterized in that: The downward traction shaft includes a rotating shaft, a first toothless gear, a second toothless gear and a third toothless gear, the rotating shaft is connected to the motor, the first toothless gear, the second toothless gear and the third toothless gear are sleeved on the rotating shaft, the first toothless gear is arranged corresponding to the first downward pressure piece, the second toothless gear is arranged corresponding to the second downward pressure piece, and the third toothless gear is arranged corresponding to the third downward pressure piece.

5. A solar photovoltaic panel cleaning device as claimed in claim 4, characterized in that: The first pressing member includes a first spring tube and a first telescopic rod. The first spring tube is vertically downwardly arranged on the shell. One end of the first telescopic rod is sleeved in the first spring tube. A first rack is arranged on the first telescopic rod. The first rack can be meshed with the first toothless gear. The other end of the first telescopic rod is hinged to the cotton block wiping member.

6. A solar photovoltaic panel cleaning device as claimed in claim 5, characterized in that: The cotton block wiping piece includes an inlaid groove body and a cotton block. The inlaid groove body is arranged at one end of the first telescopic rod, and the cotton block is clamped in the inlaid groove body.

7. A solar photovoltaic panel cleaning device as claimed in claim 6, characterized in that: The cotton block is an elastic strip sponge.

8. A solar photovoltaic panel cleaning device as claimed in claim 1, characterized in that: The solar photovoltaic panel cleaning device also includes an air-drying component, which is arranged on the shell and located directly above the cotton block wiping member.

9. A solar photovoltaic panel cleaning device as claimed in claim 8, characterized in that: The air-drying component includes a fan, a blowing port and an exhaust port. The fan is arranged on the shell. The blowing ports are arranged in a plurality of groups in sequence. The openings of the blowing ports are arranged vertically downward. The exhaust port is arranged on the shell.

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