A structure and robot for cleaning impurities on the surface of photovoltaic panels

Abstract

This invention relates to the field of photovoltaic panel cleaning technology, and more particularly to a structure and robot for cleaning impurities on the surface of photovoltaic panels. The structure includes a moving platform and several cleaning units mounted on the moving platform. Each cleaning unit includes two sprockets, the line connecting the two sprockets being perpendicular to the moving direction of the moving platform, and the two sprockets being driven by a chain belt. This invention effectively solves the drawback of traditional friction cleaning methods, which cannot quickly remove stubborn impurities from the surface of photovoltaic panels. It utilizes the outward extension characteristic of elastic scrapers to provide a more direct and effective force to the impurities, allowing the elastic scrapers to quickly scrape and remove them. Simultaneously, the chain belt drives several elastic scrapers in a lateral cyclical motion, ensuring that each scraper only targets a small portion of the stubborn impurities, thereby greatly reducing the difficulty of impurity cleaning and improving the cleaning effect and speed.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic panel cleaning technology, and in particular to a structure and robot for cleaning impurities on the surface of photovoltaic panels. Background Technology

[0002] As an important component of clean energy, photovoltaic power generation is directly affected by surface contamination. In distributed photovoltaic power stations, photovoltaic panels are often exposed to heavily polluted environments such as industrial oil, dust, and bird droppings. The adhesion of pollutants can significantly reduce photoelectric conversion efficiency and even cause hot spot effects, shortening the life of the modules. Therefore, achieving efficient, automated, and low-damage cleaning of photovoltaic panels has become a key issue that urgently needs to be addressed in the field of photovoltaic operation and maintenance.

[0003] Currently, common cleaning methods include mechanical wiping, water washing, airflow cleaning, and self-cleaning coatings. Among these, mechanical wiping technology is widely used due to its low cost and good cleaning effect. While physical friction using contact cleaning tools such as brushes and cloths can remove general dust, its cleaning efficiency is limited by the contact pattern between the tool and the board surface. In actual operation, due to frictional resistance when the brush or cloth moves along the board surface, its head bends backward and adheres to the board surface, causing the bristles or cloth to be unable to maintain a vertical force application state, and only surface sliding wiping can be achieved. This contact pattern reduces the cleaning tool's ability to remove impurities from the board surface, and the cleaning force is difficult to effectively transfer to stubborn contaminants (such as solidified bird droppings, oil stains, and adhesive deposits), resulting in limited cleaning effect. Furthermore, long-term wiping can easily lead to micro-wear on the board surface, affecting light transmittance and durability. Summary of the Invention

[0004] This invention provides a structure and robot for cleaning impurities on the surface of photovoltaic panels, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A structure for cleaning impurities on the surface of a photovoltaic panel includes a moving platform and several cleaning units mounted on the moving platform. Each cleaning unit includes two sprockets, the line connecting the two sprockets being perpendicular to the moving direction of the moving platform, and the two sprockets being driven by a chain belt. Several elastic scrapers are provided on the chain belt, and the elastic scrapers extend outward in a direction away from the chain belt.

[0007] Furthermore, each of the elastic scrapers is equipped with an elastic pressure plate. One end of the elastic pressure plate is fixed relative to the chain belt, and the other end of the elastic pressure plate provides an elastic force to the end of the elastic scraper away from the chain belt, so that the end of the elastic scraper away from the chain belt is in contact with the surface of the external power generation plate.

[0008] Furthermore, the arrangement of the cleaning units on the moving platform is at least one of the following: staggered arrangement, horizontal linear arrangement, or vertical linear arrangement. Adjacent cleaning units are driven by two transmission gears and move in the same or opposite directions.

[0009] A purging unit is provided on the mobile platform for purging the external power generation panel, the cleaning unit, and the gaps between two adjacent cleaning units.

[0010] Furthermore, the cleaning structure also includes a vibrating table that vibrates on the moving platform, and the sprocket on the cleaning unit is rotatably mounted on the vibrating table via a support shaft.

[0011] Furthermore, the movable platform is provided with a power unit for providing power for the movement of the vibration table and the movement of the sprocket. The power unit includes a drive motor disposed on the movable platform, a drive gear eccentrically disposed on the output end of the drive motor, and a connecting arm rotatably disposed at the axis position of the end face of the drive gear. The drive gear meshes with the transmission gear for transmission, and the connecting arm is rotatably connected to the corresponding support shaft.

[0012] Furthermore, the purging unit includes an air guide pipe and a plurality of nozzles connected to and arranged along the length of the air guide pipe, and the air guide pipe is mounted on the moving platform via a support plate.

[0013] A sealing tube is rotatably installed inside the air guide tube. The outer wall of the sealing tube is used to seal the nozzle. Several slots are opened on the sealing tube.

[0014] Furthermore, the purging unit also includes a pump body disposed on the moving platform and a pipe connected to the output end of the pump body;

[0015] A secondary pipe is provided at one end of the air guide pipe, and several spiral blades are provided on the inner wall of the secondary pipe. The main pipe is connected to the secondary pipe.

[0016] Furthermore, an adjusting column is provided at the other end of the air guide tube. The adjusting column is slidably installed on the corresponding support plate. One end of the adjusting column is slidably inserted into the air guide tube, and the other end of the adjusting column is elastically connected to the corresponding support plate through a spring.

[0017] Furthermore, the air guide tube is rotatably mounted on the support plate;

[0018] A threaded rod and a threaded sleeve are provided inside the sealing tube for mutual cooperation. The threaded rod is fixed relative to the spring, and the threaded sleeve is fixed relative to the air guide tube.

[0019] A cleaning robot includes a walking unit, a control unit, a battery pack, a signal receiver, and the aforementioned cleaning structure, wherein the control unit, the battery pack, the signal receiver, and the cleaning structure are all mounted on the walking unit.

[0020] The technical solution of this invention can achieve the following technical effects:

[0021] It effectively solves the drawback of traditional friction cleaning methods that cannot quickly remove stubborn impurities from the surface of the power generation panel. It makes convenient use of the outward extension of the elastic scraper, which can provide a more direct and effective force to the impurities, allowing the elastic scraper to quickly scrape and remove the impurities. At the same time, by using a chain to drive several elastic scrapers to circulate laterally, each elastic scraper can only scrape and push away a small part of the stubborn impurities, thereby greatly reducing the difficulty of impurity cleaning and improving the impurity cleaning effect and cleaning speed.

[0022] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A schematic diagram of a structure for cleaning impurities on the surface of a photovoltaic panel;

[0025] Figure 2 for Figure 1 A structural diagram from another perspective;

[0026] Figure 3 for Figure 1 Explosion structure diagram;

[0027] Figure 4 for Figure 3 Schematic diagram of the vibration table and its superstructure;

[0028] Figure 5 for Figure 4 A structural diagram from another perspective;

[0029] Figure 6 for Figure 4Schematic diagram of the structure of the mid-chain belt;

[0030] Figure 7 for Figure 3 Schematic diagram of the middle airway;

[0031] Figure 8 for Figure 7 Schematic diagram of cross-section structure;

[0032] Attached reference numerals: 100, mobile station;

[0033] 200. Cleaning unit; 201. Sprocket; 202. Chain belt; 203. Elastic scraper; 204. Elastic pressure plate; 205. Transmission gear; 206. Vibration table; 207. Support shaft; 208. Drive motor; 209. Drive gear; 210. Connecting arm;

[0034] 300. Purge unit; 301. Air guide pipe; 302. Nozzle; 303. Support plate; 304. Sealing pipe; 305. Groove; 306. Pump body; 307. Pipeline; 308. Sub-pipe; 309. Spiral blade; 310. Adjusting column; 311. Spring; 312. Threaded rod; 313. Threaded sleeve. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0037] like Figures 1 to 6 As shown, this application provides a structure for cleaning impurities on the surface of a photovoltaic panel, including a moving platform 100 and a plurality of cleaning units 200 mounted on the moving platform 100. Each cleaning unit 200 includes two sprockets 201, the line connecting the two sprockets 201 being perpendicular to the moving direction of the moving platform 100, and the two sprockets 201 being driven by a chain belt 202. A plurality of elastic scrapers 203 are provided on the chain belt 202, and the elastic scrapers 203 extend outward in a direction away from the chain belt 202.

[0038] Specifically, the mobile platform 100 can move on the surface of the power generation panel via an external walking mechanism. This allows the mobile platform 100 to carry several cleaning units 200 across the surface of the power generation panel. The cleaning units 200 clean impurities from the surface of the power generation panel. The moving direction of the mobile platform 100 can be any direction, such as the length, width, or tilt of the power generation panel. For example, when the power generation panel is tilted, the mobile platform 100 can move from top to bottom on the surface of the power generation panel, which facilitates pushing impurities from high to low. When the power generation panel is horizontal, the mobile platform 100 can move in any direction. When the horizontal length of the power generation panel is large, the length of the mobile platform 100 can be parallel to the width of the power generation panel, and the mobile platform 100 can move along the length of the power generation panel. In this case, the cleaning units 200 perform lateral cleaning of impurities on the surface of the power generation panel.

[0039] The cleaning units 200 on the mobile station 100 can be set separately from each other or at least partially overlapped. When the cleaning units 200 are set separately from each other, they can clean different areas on the power generation board. The missed areas between two adjacent cleaning units 200 can be cleaned when the mobile station 100 passes through the area again. When the cleaning units 200 are set at least partially overlapped, they can clean a larger area together.

[0040] Since the conveying direction of the chain belt 202 on the two sprockets 201 is perpendicular to the moving direction of the moving table 100, the chain belt 202 and its several elastic scrapers 203 can cover a large area on the generator plate when moving with the moving table 100, which can increase the working area and thus improve work efficiency.

[0041] In use, the sprockets 201, chain belts 202, and several elastic scrapers 203 within each cleaning unit 200 move synchronously. The elastic scrapers 203 clean the surface of the generator panel and remove impurities. When the moving platform 100 moves, the elastic scrapers 203 on the cleaning unit 200 can perform a comprehensive cleaning of a large area of ​​the generator panel surface. Because the elastic scrapers 203 extend away from the chain belt 202, the elastic scrapers 203 on the chain belt 202 can diffuse outward in a scattering manner. This, combined with the movement of the moving platform 100, allows the ends of the elastic scrapers 203 to clean the surface of the generator panel. The surface impurities are effectively removed by shoveling, improving the intuitiveness and effectiveness of impurity removal. Since the elastic scraper 203 is synchronously driven with the chain belt 202, it can use its side to scrape and remove impurities on the surface of the generator board in a direction perpendicular to the moving table 100. This allows each elastic scraper 203 to slowly scrape and remove stubborn impurities in a cycle, reducing the difficulty of impurity removal. It also allows the elastic scraper 203 to push the scraped impurities away laterally, gradually reducing the size of the stubborn impurities. Furthermore, it can push the impurities laterally to prevent them from accumulating.

[0042] To reduce the scratching and friction damage to the battery panel caused by the elastic scraper 203, the elastic scraper 203 can be made of materials such as silicone or plastic.

[0043] The technical solution of this invention effectively solves the drawback of traditional friction cleaning methods, which cannot quickly remove stubborn impurities from the surface of the power generation panel. It makes convenient use of the outward extension characteristic of the elastic scraper 203, which can provide a more direct and effective force to the impurities, allowing the elastic scraper 203 to quickly scrape and remove the impurities. At the same time, by using the chain belt 202 to drive several elastic scrapers 203 to circulate laterally, each elastic scraper 203 can only laterally scrape and push away a small portion of the stubborn impurities, thereby greatly reducing the difficulty of impurity cleaning and improving the impurity cleaning effect and cleaning speed.

[0044] Furthermore, such as Figure 6 As shown, each elastic scraper 203 is equipped with an elastic pressure plate 204. One end of the elastic pressure plate 204 is fixed relative to the chain belt 202, and the other end of the elastic pressure plate 204 provides an elastic force to the end of the elastic scraper 203 away from the chain belt 202, so that the end of the elastic scraper 203 away from the chain belt 202 is in contact with the surface of the external power generation plate.

[0045] When the cleaning unit 200 is placed on the surface of the power generation plate, the distance between the chain belt 202 and the power generation plate determines the shape of the elastic scraper 203. Specifically, when the distance between the chain belt 202 and the power generation plate is small, the length of the elastic scraper 203 between them is short. At this time, the other parts of the elastic scraper 203 will be lifted upwards by the power generation plate, resulting in a small contact area between the elastic scraper 203 and the power generation plate. When the distance between the chain belt 202 and the power generation plate is large, only the end of the elastic scraper 203 furthest from the chain belt 202 contacts the surface of the power generation plate, and the contact area between the elastic scraper 203 and the power generation plate remains small. Furthermore, by using elastic scrapers on each elastic scraper 203... The elastic pressure plate 204 provides an elastic force to the end of the elastic scraper 203 away from the chain belt 202, thereby ensuring that the end of the elastic scraper 203 remains in contact with the surface of the generator plate. When the distance between the chain belt 202 and the generator plate decreases, the bending position of the elastic scraper 203 moves closer to the chain belt 202, increasing the contact area between the elastic scraper 203 and the generator plate. This increases the working area of ​​each elastic scraper 203, allowing the working areas of several elastic scrapers 203 to overlap, and the overlap area can be increased. In this way, any area on the generator plate can be cleaned by several elastic scrapers 203 working together, improving the cleaning effect.

[0046] By utilizing the elastic squeezing action of the elastic pressure plate 204 on the end of the elastic scraper 203, the cleaning ability of the end of the elastic scraper 203 to shovel and scrape away impurities can be improved, thereby enhancing the cleaning effect.

[0047] Furthermore, the arrangement of several cleaning units 200 on the moving platform 100 is at least one of sequential staggered arrangement, horizontal linear arrangement, or vertical linear arrangement. Adjacent cleaning units 200 are mutually driven by two transmission gears 205 and move in the same direction or in opposite directions.

[0048] A purging unit 300 is provided on the mobile station 100 for purging the external power generation panel, the cleaning unit 200 and the gap between two adjacent cleaning units 200.

[0049] The cleaning units 200 can be arranged in an alternating manner, either along a diagonal line on the moving platform 100 or by dividing the cleaning units 200 into two groups (left and right) and arranging them alternately. In this way, a portion of the area of ​​two adjacent cleaning units 200 can be cleaned together for a certain area on the power generation board. Alternatively, the cleaning units 200 can be arranged in a horizontal linear arrangement along the length of the moving platform 100. This allows the cleaning units 200 to cover a larger area on the power generation board. However, within one cycle of the moving platform 100's movement, any area on the power generation board can only be cleaned once by one cleaning unit 200. A further arrangement of the cleaning units 200 can be arranged in a vertical linear arrangement along the direction of movement of the moving platform 100. In this case, the cleaning units 200 only clean the same area on the power generation board multiple times. When other areas on the power generation board need to be cleaned, the moving platform 100 and the cleaning units 200 need to be moved. All of the above arrangement methods can meet the working requirements of cleaning the power generation board and are within the scope of protection of this case.

[0050] The change in the conveying direction of the cleaning unit 200 can push impurities in different directions. When two cleaning units 200 convey in the same direction, taking a number of cleaning units 200 arranged in a horizontal linear manner as an example, the number of cleaning units 200 can continuously push the impurities horizontally in a straight line until they are pushed to the outside of the last cleaning unit 200. When two cleaning units 200 move in opposite directions, the cleaning unit 200 can push the impurities in one direction. That is, the impurities will accumulate between the two cleaning units 200 with opposite pushing directions. There will be multiple impurity accumulation positions between the number of cleaning units 200. This can reduce the lateral movement path of impurities and reduce the amount of impurities missed.

[0051] When the two transmission gears 205 between the two cleaning units 200 are coaxially arranged, and the two transmission gears 205 are respectively driven by the sprockets 201 on the two cleaning units 200, the two cleaning units 200 move in the same direction. When the two transmission gears 205 are respectively driven by the sprockets 201 on the two cleaning units 200, and the two transmission gears 205 mesh with each other, the two cleaning units 200 move in opposite directions.

[0052] The purging unit 300 can be installed on the front or rear side of the cleaning unit 200 in the direction of movement. When the purging unit 300 is installed on the front side of the cleaning unit 200, the airflow discharged by the purging unit 300 can pre-purge the impurities on the surface of the generator plate. When the purging unit 300 is installed on the rear side of the cleaning unit 200, the airflow discharged by the purging unit 300 can pass through the cleaning unit 200 and pre-treat the impurities on the front side of the cleaning unit 200. However, the airflow intensity will decrease at this time. When the airflow blows onto the cleaning unit 200, the airflow can push the impurities cleaned by the cleaning unit 200 forward along the direction of movement of the moving platform 100. The airflow can also clean the impurities on each elastic scraper 203 and between two adjacent cleaning units 200, so as to avoid secondary pollution of the cleaned generator plate by the impurities carried on the elastic scraper 203 when it moves to the rear side of the cleaning unit 200.

[0053] In addition to spraying air, the 300 purging unit can also spray water. The specific usage method can be selected according to the actual situation.

[0054] Furthermore, such as Figure 3 As shown, the cleaning structure also includes a vibration table 206 that vibrates on the moving table 100, and the sprocket 201 on the cleaning unit 200 is rotatably mounted on the vibration table 206 via a support shaft 207.

[0055] The vibration table 206 can support several cleaning units 200. The vibration mode of the vibration table 206 on the moving platform 100 can be varied. When the vibration table 206 reciprocates along the moving direction of the moving platform 100, it can push the elastic scraper 203 forward to scrape away impurities, then backward, and then forward again to scrape away impurities in a repetitive motion. In this way, the elastic scraper 203 can perform multiple impurity cleaning processes on a certain area of ​​the power generation plate, instead of requiring the elastic scraper 203 to clean the power generation plate only when the cleaning unit 200 moves in one direction. A certain area on the surface can only be cleaned once; when the vibration table 206 moves in a circular motion on the sprocket 201, the direction of the cleaning unit 200 remains unchanged, and it also moves in a circular motion. The elastic scraper 203 will generate vibration displacement in both the horizontal and vertical directions, and its impurity cleaning mode is more diverse than the previous one; the support shaft 207 can provide support for the sprocket 201. When the two cleaning units 200 move relative to each other, the two transmission gears 205 can be respectively installed on the support shaft 207 on the two cleaning units 200.

[0056] Furthermore, such as Figure 3 and Figure 5As shown, the movable table 100 is equipped with a power unit for providing power for the movement of the vibration table 206 and the sprocket 201. The power unit includes a drive motor 208 mounted on the movable table 100, a drive gear 209 eccentrically mounted on the output end of the drive motor 208, and a connecting arm 210 rotatably mounted on the axis of the end face of the drive gear 209. The drive gear 209 meshes with the transmission gear 205 for transmission, and the connecting arm 210 is rotatably connected to the corresponding support shaft 207.

[0057] Taking the two transmission gears 205 respectively mounted on the two support shafts 207 as an example, due to the setting of the connecting arm 210, the drive gear 209 and one of the transmission gears 205 always remain in a meshed state. When the drive motor 208 drives the drive gear 209 to rotate eccentrically, the drive gear 209 can provide rotational power to the corresponding transmission gear 205, thereby driving the cleaning unit 200 to run. At the same time, this eccentric movement of the drive gear 209 will also pull the transmission gear 205 to move through the connecting arm 210, thereby driving the cleaning unit 200 and the vibration table 206 to reciprocate on the moving table 100.

[0058] Furthermore, such as Figures 7 to 8 As shown, the purging unit 300 includes an air guide pipe 301 and a plurality of nozzles 302 connected to and arranged on the air guide pipe 301 and along the length of the air guide pipe 301. The air guide pipe 301 is mounted on the moving table 100 via a support plate 303.

[0059] A sealing tube 304 is rotatably installed inside the air duct 301. The outer wall of the sealing tube 304 is used to seal the nozzle 302. Several slots 305 are provided on the sealing tube 304.

[0060] The gas inside the duct 301 can be ejected outward through several nozzles 302. The flat design of the nozzles 302 helps the gas adhere to the surface of the power generation plate and diffuse outward along the surface, thereby reducing the amount of gas rebound on the surface of the power generation plate. When the sealing tube 304 rotates inside the duct 301, several slots 305 can pass through the position of the nozzles 302 in one go. When the slots 305 and the nozzles 302 overlap, the gas inside the sealing tube 304 can be ejected outward through the slots 305 and the nozzles 302. When the slots 305 and the nozzles 302 separate, the outer wall of the sealing tube 304 blocks the nozzles 302. At this time, the nozzles 302 stop venting. Thus, by utilizing the cyclic rotation of the sealing tube 304, the intermittent venting mode of several nozzles 302 is realized, that is, several nozzles 302 work by continuously jetting airflow.

[0061] Furthermore, such as Figure 3 and Figure 8 As shown, the purging unit 300 also includes a pump body 306 disposed on the moving platform 100 and a pipe 307 connected to the output end of the pump body 306.

[0062] A secondary pipe 308 is provided at one end of the air guide pipe 301. Several spiral blades 309 are provided on the inner wall of the secondary pipe 308. The pipe 307 is connected to the secondary pipe 308.

[0063] Pump body 306 draws in external air and introduces it into secondary pipe 308 through pipe 307. The gas in secondary pipe 308 can be driven to rotate by several spiral blades 309, thereby driving the sealing pipe 304 to rotate. At the same time, the gas in secondary pipe 308 enters sealing pipe 304. When slot 305 is aligned with nozzle 302, the gas in sealing pipe 304 is discharged outward through slot 305 and nozzle 302.

[0064] Furthermore, such as Figure 8 As shown, an adjusting column 310 is provided at the other end of the air duct 301. The adjusting column 310 is slidably installed on the corresponding support plate 303. One end of the adjusting column 310 is slidably inserted into the air duct 301, and the other end of the adjusting column 310 is elastically connected to the corresponding support plate 303 through a spring 311.

[0065] The support plate 303 supports the spring 311. When the outer wall of the sealing tube 304 blocks the nozzle 302, the gas inside the sealing tube 304 cannot be discharged. At this time, the pipe 307 cannot introduce gas into the sealing tube 304, that is, the sealing tube 304 cannot rotate. However, by using the adjusting column 310, the pipe 307 can continue to fill the sealing tube 304 with gas in the above state, thereby continuing to drive the sealing tube 304 to rotate. The adjusting column 310 slides to the outside of the air guide pipe 301 under the action of air pressure, and the spring 311 undergoes elastic deformation. When the notch 305 is aligned with the nozzle 302, the gas inside the sealing tube 304 is discharged, and the spring 311 pushes the adjusting column 310 to reset, thereby ensuring that the sealing tube 304 can rotate continuously and stably.

[0066] Furthermore, the air duct 301 is rotatably mounted on the support plate 303;

[0067] A threaded rod 312 and a threaded sleeve 313 are provided inside the sealing tube 304 for mutual use. The threaded rod 312 is fixed relative to the spring 311, and the threaded sleeve 313 is fixed relative to the air guide tube 301.

[0068] like Figure 8 As shown, the shape of the adjusting column 310 can be set to a polygon or other shape that cannot rotate on the support plate 303. The adjusting column 310 is not directly related to the air guide tube 301, that is, as shown in the figure. Figure 8As shown, the regulating column 310 and the air guide pipe 301 are separated from each other. When the air pressure inside the air guide pipe 301 pushes the regulating column 310 to move with the help of the threaded rod 312, the threaded rod 312 and the threaded sleeve 313 move relative to each other. At this time, the threaded rod 312 pushes the threaded sleeve 313 to rotate. The threaded rod 312 is guided by the regulating column 310 and cannot rotate. The threaded sleeve 313 drives the air guide pipe 301 to rotate synchronously, thereby causing the several nozzles 302 on the air guide pipe 301 to swing, realizing the working mode of several nozzles 302 swinging exhaust, increasing the airflow coverage area.

[0069] A cleaning robot includes a walking unit, a control unit, a battery pack, a signal receiver, and the aforementioned cleaning structure, wherein the control unit, battery pack, signal receiver, and cleaning structure are all mounted on the walking unit.

[0070] The walking unit can carry the various structures on it to move on the surface of the power generation plate. The control unit can control the walking unit, battery pack, signal receiver and cleaning structure to work. The battery pack provides power to each structure. The signal receiver can be used to receive external control signals to realize remote control. In this way, by using the above-mentioned structures, an automatic cleaning effect can be achieved and the degree of automation can be improved. Of course, in addition to the above structures, other auxiliary structures such as self-cleaning structure and storage structure can also be included.

[0071] Although this application has been described in conjunction with specific features and embodiments, it is obvious that various modifications and combinations can be made thereto without departing from the spirit and scope of this application. Accordingly, this specification and drawings are merely exemplary illustrations of the application as defined herein, and are to be considered as covering any and all modifications, variations, combinations, or equivalents within the scope of this application. Clearly, those skilled in the art can make various alterations and modifications to this application without departing from its scope. Thus, if such modifications and modifications fall within the scope of this application and its equivalents, this application intends to include such modifications and modifications.

Claims

1. A structure for cleaning impurities on the surface of a photovoltaic panel, characterized in that, The device includes a mobile platform and several cleaning units mounted on the mobile platform. Each cleaning unit includes two sprockets, the line connecting the two sprockets is perpendicular to the moving direction of the mobile platform, and the two sprockets are driven by a chain belt. Several elastic scrapers are provided on the chain belt, and the elastic scrapers extend outward in a direction away from the chain belt. The cleaning units on the moving platform are arranged in at least one of the following ways: staggered arrangement, horizontal linear arrangement, or vertical linear arrangement. Adjacent cleaning units are driven by two transmission gears and move in the same or opposite directions. A purging unit is provided on the mobile platform for purging the external power generation panel, the cleaning unit, and the gap between two adjacent cleaning units. The cleaning structure also includes a vibrating table that vibrates on the moving platform, and the sprocket on the cleaning unit is rotatably mounted on the vibrating table via a support shaft. The movable platform is equipped with a power unit for providing power for the movement of the vibration table and the movement of the sprocket. The power unit includes a drive motor mounted on the movable platform, a drive gear eccentrically mounted on the output end of the drive motor, and a connecting arm rotatably mounted on the axis of the end face of the drive gear. The drive gear meshes with the transmission gear, and the connecting arm is rotatably connected to the corresponding support shaft. The purging unit includes an air guide pipe and a plurality of nozzles connected to and arranged along the length of the air guide pipe. The air guide pipe is mounted on the moving platform via a support plate. A sealing tube is rotatably installed inside the air guide tube. The outer wall of the sealing tube is used to seal the nozzle. Several slots are opened on the sealing tube. The purging unit also includes a pump body disposed on the moving platform and a pipe connected to the output end of the pump body; A secondary pipe is provided at one end of the air guide pipe, and a number of spiral blades are provided on the inner wall of the secondary pipe. The main pipe is connected to the secondary pipe. An adjusting column is provided at the other end of the air guide tube. The adjusting column is slidably installed on the corresponding support plate. One end of the adjusting column is slidably inserted into the air guide tube, and the other end of the adjusting column is elastically connected to the corresponding support plate through a spring. The air guide tube is rotatably mounted on the support plate; A threaded rod and a threaded sleeve are provided inside the sealing tube for mutual cooperation. The threaded rod is fixed relative to the spring, and the threaded sleeve is fixed relative to the air guide tube.

2. The photovoltaic panel surface impurity cleaning structure according to claim 1, characterized in that, Each of the elastic scrapers is equipped with an elastic pressure plate. One end of the elastic pressure plate is fixed relative to the chain belt, and the other end of the elastic pressure plate provides an elastic force to the end of the elastic scraper away from the chain belt, so that the end of the elastic scraper away from the chain belt is in contact with the surface of the external power generation plate.

3. A cleaning robot, characterized in that, It includes a walking unit, a control unit, a battery pack, a signal receiver, and a cleaning structure as described in any one of claims 1-2, wherein the control unit, the battery pack, the signal receiver, and the cleaning structure are all mounted on the walking unit.

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