A cleaning device for a solar photovoltaic panel

Abstract

The present invention belongs to the technical field of photovoltaic equipment, and specifically discloses a cleaning device for a solar photovoltaic panel, which includes a horizontally moving square frame. At the lower sides of both ends of the two long beams of the horizontally moving square frame, mounting rods are symmetrically and fixedly provided. At the inner ends of the mounting rods, a first roller and a second roller perpendicular to each other are rotatably provided. At both ends in the length direction of the horizontally moving square frame, a longitudinal movement driving mechanism is provided. Above the horizontally moving square frame, a double-layer square frame is arranged in parallel. An alternating cleaning mechanism is arranged at the lower layer of the double-layer square frame. Above the alternating cleaning mechanism, a flushing brush mechanism is provided. A water collecting tank is arranged inside the alternating cleaning mechanism. At one end of the alternating cleaning mechanism, a reciprocating alternating flipping driving mechanism is provided. At the other end of the alternating cleaning mechanism, a cleaning power mechanism is provided. The present invention adopts an alternating cleaning method, while one cleaning component cleans the photovoltaic panel, the other cleaning component is being cleaned, realizing that there is no need to frequently replace the cleaning component. At the same time, a semi-wet cleaning method is adopted to avoid the diffusion of sewage or dust pollution.

Description

Technical Field

[0001] The present invention belongs to the technical field of photovoltaic devices, and specifically refers to a cleaning device for solar photovoltaic panels. Background Art

[0002] With the continuous growth of global energy demand and the increasing prominence of environmental problems, solar energy, as a clean and renewable energy source, has become increasingly important. Photovoltaic power generation technology, as one of the main ways of solar energy utilization, has been widely applied and developed globally. The photovoltaic power generation system directly converts solar light energy into electrical energy through photovoltaic panels, with advantages such as no pollution, no noise, and low operation and maintenance costs, and has become one of the most promising renewable energy technologies.

[0003] The power generation efficiency of photovoltaic panels directly affects the performance of the entire photovoltaic power generation system. However, during actual operation, the surface of photovoltaic panels is extremely vulnerable to being covered by pollutants such as dust, sand, bird droppings, and leaves. These pollutants will block the sunlight, reduce the photoelectric conversion efficiency of the photovoltaic panels, and in severe cases, even cause the "hot spot effect", damage the photovoltaic modules, and shorten their service life. Therefore, regular and effective cleaning of photovoltaic panels is a key link to ensure the efficient and stable operation of the photovoltaic power generation system. Currently, the main cleaning methods for photovoltaic panels are water washing and dry cleaning. No matter which method is used, the existing cleaning technologies usually use structures such as brush rollers to directly contact the surface of the photovoltaic panels for cleaning. However, these cleaning methods have the following defects:

[0004] Cleaning components such as brush rollers will quickly accumulate pollutants. When the cleaning components themselves are contaminated, their cleaning ability will be greatly reduced, and even transfer the pollutants to the photovoltaic panels that have not been cleaned, causing cross-contamination. To ensure the cleaning effect, it is necessary to frequently replace or clean the cleaning components. However, in a large photovoltaic array, the number of photovoltaic panels in each unit is numerous. When cleaning multiple connected photovoltaic panels in a unit, the cleaning components are often severely contaminated before the cleaning is completed. However, the cleaning device usually needs to be precisely placed at a specific position of the photovoltaic panel unit to ensure the stability and effectiveness of the cleaning process. If the cleaning components are replaced midway, the entire cleaning device must be removed from the photovoltaic panel unit, the cleaning components are replaced or cleaned, and then reinstalled. This process is not only cumbersome and laborious, but also greatly reduces the cleaning efficiency.

[0005] Traditional water washing methods often use spraying or flushing, which easily generate a large amount of cleaning sewage. This sewage flows over the surface of the photovoltaic panel and can carry pollutants to other areas of the photovoltaic panel, causing secondary pollution. In addition, components such as minerals in the sewage may form scale on the surface of the photovoltaic panel, further affecting the power generation efficiency of the photovoltaic panel; Traditional dry cleaning methods usually use brushing or blowing to remove dust. However, this method easily raises the dust and spreads it into the surrounding environment, causing air pollution. At the same time, the raised dust may also settle on the photovoltaic panel again, forming secondary pollution. Summary of the Invention

[0006] In view of the above situation, the present invention provides a cleaning device for solar photovoltaic panels. By adopting an alternating cleaning method, while one cleaning component cleans the photovoltaic panel, the other cleaning component is being washed, achieving the goal of not requiring frequent replacement of the cleaning component, avoiding cross-contamination, improving the cleaning efficiency, and at the same time adopting a semi-wet cleaning method to avoid sewage diffusion or dust pollution.

[0007] The technical solution adopted by the present invention is as follows: The present invention provides a cleaning device for solar photovoltaic panels, including a horizontally moving square frame, which is laid parallel above the photovoltaic unit. The length direction of the horizontally moving square frame is perpendicular to the erection length direction of the photovoltaic unit. At the lower sides of both ends of the two long beams of the horizontally moving square frame, mounting rods are symmetrically and fixedly provided. At the inner ends of the mounting rods, a perpendicular first roller and a second roller are rotatably provided. Four groups of first rollers and second rollers are closely clamped on the support frames at both ends in the width direction of the photovoltaic unit. The horizontally moving square frame moves along the length direction of the photovoltaic unit through the first rollers and the second rollers. At both ends in the length direction of the horizontally moving square frame, a longitudinal movement driving mechanism is provided. Above the horizontally moving square frame, a double-layer square frame is arranged in parallel. At the four corners of the bottom of the double-layer square frame, longitudinal rollers are rotatably provided. The double-layer square frame moves along the length direction of the horizontally moving square frame through the longitudinal rollers. An alternating cleaning mechanism is provided in the lower layer of the double-layer square frame for cleaning the photovoltaic panel. Above the alternating cleaning mechanism, a flushing brush mechanism is provided for cleaning the alternating cleaning mechanism. A water collecting tank is arranged inside the alternating cleaning mechanism for collecting cleaning sewage. A reciprocating alternating flipping driving mechanism is provided at one end of the alternating cleaning mechanism for flipping the alternating cleaning mechanism up and down. A cleaning power mechanism is provided at the other end of the alternating cleaning mechanism for providing power to the alternating cleaning mechanism.

[0008] Further, the alternating cleaning mechanism includes a support tube and a support shaft. The support tube is fixedly arranged at the middle of one end of the lower layer of the double-layer square frame, and the support shaft is fixedly arranged at the middle of the other end of the lower layer of the double-layer square frame. The support tube and the support shaft are coaxially arranged. A first rotating frame is rotatably clamped on the support tube, and a second rotating frame is rotatably clamped on the support shaft. Brush rollers are rotatably clamped between the two ends of the first rotating frame and the second rotating frame. The length directions of the two brush rollers are parallel to the length direction of the photovoltaic unit. When the brush rollers move circumferentially along the axis of the support tube, they are not blocked by the double-layer square frame. The surface of the brush rollers is provided with bristles.

[0009] Further, the reciprocating alternating flipping driving mechanism includes a support rod and a support bar. The support rod is fixedly arranged on the support tube. The support rod is located inside the double-layer square frame and outside the first rotating frame. First and second limit posts are vertically penetrated through the two ends of the support rod. The first and second limit posts are symmetrically arranged on both sides of the support tube. The first limit post is located above the second limit post. Limit rings are spacedly arranged at positions close to the first rotating frame on the first and second limit posts. The limit rings are located on both sides of the support rod. First and second diamond-shaped grooves are respectively penetrated through the positions far from the first rotating frame on the first and second limit posts. The penetration directions of the first and second diamond-shaped grooves are symmetrically arranged at an angle with the moving direction of the longitudinal roller. The support bars are vertically and symmetrically fixedly arranged on the upper sides of the two ends in the length direction of the transverse moving square frame. A lower short rod and an upper long rod are vertically fixedly arranged on the support bar located outside the upper edge of the inclined surface of the photovoltaic unit. An upper short rod and a lower long rod are vertically fixedly arranged on the support bar located outside the lower edge of the inclined surface of the photovoltaic unit. The lower short rod, the upper short rod, the upper long rod and the lower long rod are respectively located at the four corners along the clockwise direction on the upper edge of the rectangle in the vertical projection. The upper long rod can abut against one inclined surface of the first diamond-shaped groove, the upper short rod can abut against the other inclined surface of the first diamond-shaped groove, the lower long rod can abut against one inclined surface of the second diamond-shaped groove, and the lower short rod can abut against the other inclined surface of the second diamond-shaped groove.

[0010] Further, the flushing brush mechanism includes a water inlet pipe. The water inlet pipe is fixedly arranged at the middle of the upper layer of the double-layer square frame. The water inlet pipe is parallel to the brush roller. Nozzles are arranged in an array along the length direction on the lower side of the water inlet pipe. The nozzles can cover the brush roller. One end of the water inlet pipe is closed, and the other end of the water inlet pipe is connected to a water supply device through a hose.

[0011] Furthermore, both ends of the water collecting tank are fixedly connected to the support pipe and the support shaft respectively. The water collecting tank is communicated with the support pipe. The water collecting tank is located between the first rotating frame and the second rotating frame. The water collecting tank can cover the brush roller. The water collecting tank is located between two brush rollers. When the brush roller moves circumferentially along the axis of the support pipe, it is not blocked by the water collecting tank. When the bottom surface of the water collecting tank is parallel to the inclined surface of the photovoltaic unit, the height of one end side wall located below is greater than that of the other end side wall.

[0012] Furthermore, the cleaning power mechanism includes a third motor, a second pulley and a roller shaft. The third motor is fixedly arranged at the middle of one end of the lower layer of the double-layer square frame. The output end of the third motor is coaxially and fixedly provided with a first pulley. The second pulley is coaxially and rotatably engaged on the support shaft. The roller shaft is coaxially and fixedly arranged at one end of the brush roller. The roller shaft rotatably penetrates through the second rotating frame and is coaxially and fixedly provided with a third pulley at the rear. A second belt is connected in cooperation between the first pulley and the second pulley. Third belts are connected in cooperation between the second pulley and the two third pulleys respectively.

[0013] Furthermore, the longitudinal movement driving mechanism includes a side rod and a hook. The side rods extend outward and are symmetrically fixedly arranged at the middle of both ends in the length direction of the transverse movement square frame. A second motor is fixedly arranged on the lower side of one of the side rods. The output end of the second motor penetrates through the side rod and is coaxially and fixedly provided with a rotating shaft. The upper end of the rotating shaft is coaxially and fixedly provided with a driving wheel. A fixed shaft is fixedly arranged on the upper side of the other side rod. The upper end of the fixed shaft is coaxially and rotatably engaged with a driven wheel. A first belt is connected in cooperation between the driving wheel and the driven wheel. The first belt is located above the double-layer square frame. The hook is fixedly arranged at the middle of the upper layer of the double-layer square frame. The hook is fixedly connected to a section of the first belt.

[0014] Further, the second rotating frame is closely arranged with the second pulley. The second pulley can drive the second rotating frame to rotate in the same clockwise direction through friction. When the first rotating frame is perpendicular to the photovoltaic panel, the circumferential surfaces where the first limiting post and the second limiting post are located can be tangent to the first rotating frame on both sides of the first rotating frame. When the double-layer square frame moves upward above the photovoltaic panel, the first limiting post blocks the first rotating frame. When the double-layer square frame moves upward and drives away from the photovoltaic panel, the upper long rod abuts against an inclined surface of the first diamond-shaped groove, so that the first limiting post is separated from the first rotating frame. When the upper long rod passes through the first diamond-shaped groove and the second diamond-shaped groove does not contact the lower short rod, the rotation angle of the first rotating frame is less than 180 degrees. When the double-layer square frame continues to move upward, the lower short rod abuts against an inclined surface of the second diamond-shaped groove, so that the second limiting post blocks the first rotating frame. When the double-layer square frame moves downward and drives away from the photovoltaic panel, the upper long rod abuts against the other inclined surface of the second diamond-shaped groove, so that the second limiting post is separated from the first rotating frame. When the lower long rod passes through the second diamond-shaped groove and the first diamond-shaped groove does not contact the upper short rod, the rotation angle of the first rotating frame is less than 180 degrees. When the double-layer square frame continues to move downward, the upper short rod abuts against the other inclined surface of the first diamond-shaped groove, so that the first limiting post blocks the first rotating frame.

[0015] Further, two first motors are fixedly arranged on the long beam of the transverse moving square frame at the position of the upper edge of the inclined surface of the photovoltaic unit. The output ends of the first motors pass through downward and are coaxially and fixedly connected with the corresponding first rollers. The first rollers are closely attached to the outer sides of the support frames at both ends of the photovoltaic unit in the width direction. The second rollers are closely attached to the upper sides of the support frames at both ends of the photovoltaic unit in the width direction, and when the first rotating frame is perpendicular to the photovoltaic panel, the brush hairs contact the photovoltaic panel. The cross-section of the long beam of the transverse moving square frame is L-shaped and the longitudinal rollers are clamped inside.

[0016] Further, the support pipe is externally connected to a water pumping device through a hose.

[0017] The beneficial effects achieved by the present invention with the above structure are as follows:

[0018] (1) The alternating cleaning mechanism drives the two brush rollers to work alternately through the first rotating frame and the second rotating frame. When one brush roller cleans the photovoltaic panel, the other brush roller is cleaned by the flushing brush mechanism spraying water through the nozzle, and the cleaning sewage is collected through the water collecting tank. The reciprocating alternating flipping drive mechanism uses the ingenious cooperation of structures such as the first rotating frame, the first limiting post, the second limiting post, the first diamond-shaped groove and the second diamond-shaped groove to automatically switch the positions of the two brush rollers when the double-layer square frame moves up and down to the outside of the photovoltaic unit, realizing seamless connection between cleaning and flushing, without the need to frequently replace the cleaning components, avoiding cross contamination, and also improving the cleaning efficiency.

[0019] (2) In the second half of the longitudinal cleaning process, the flushing brush mechanism is turned off, and the centrifugal force is used to make the bristles in a semi-dry and semi-wet state. Since only a small area is cleaned each time, this semi-wet cleaning method can not only effectively clean the photovoltaic panel, but also avoid the secondary pollution and scale problems caused by the overflow of sewage in the traditional water washing method, as well as the air pollution and secondary sedimentation problems caused by dust in the dry cleaning method.

[0020] (3) The reciprocating alternating flipping drive mechanism uses the ingenious cooperation of components such as the first rotating frame, the first limiting column, the second limiting column, the first diamond groove and the second diamond groove, and automatically realizes the flipping and switching of the brush roller through the up and down movement of the double-layer square frame, without manual intervention, simplifies the operation process, reduces the operation difficulty, and further improves the automation degree. Since it is the working principle of a pure mechanical structure, it also avoids the control structure of complex electronic induction components and reduces the production and maintenance costs of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a working schematic diagram of a cleaning device for a solar photovoltaic panel proposed by the present invention.

[0022] Figure 2 It is a three-dimensional structure schematic diagram of a cleaning device for a solar photovoltaic panel proposed by the present invention.

[0023] Figure 3 is Figure 1 The enlarged view of part A in

[0024] Figure 4 is Figure 1 The enlarged view of part B in

[0025] Figure 5 It is a structure schematic diagram of the positional relationship between the first belt and the hook of a cleaning device for a solar photovoltaic panel proposed by the present invention.

[0026] Figure 6 It is a structure schematic diagram of the positional relationship between the flushing brush mechanism and the brush roller of a cleaning device for a solar photovoltaic panel proposed by the present invention.

[0027] Figure 7 is Figure 6 The enlarged view of part C in

[0028] Figure 8 is Figure 6 The enlarged view of part D in

[0029] Figure 9 It is a structure schematic diagram of the positional relationship between the first limiting column, the second limiting column and the first rotating frame of a cleaning device for a solar photovoltaic panel proposed by the present invention.

[0030] Figure 10Schematic structural diagram of a reciprocating alternating flipping drive mechanism for a cleaning device of a solar photovoltaic panel proposed by the present invention.

[0031] Among them, 1. Transverse movement square frame; 2. Mounting rod, 21. Second roller, 22. First roller, 23. First motor; 3. Longitudinal movement drive mechanism, 31. Side rod, 32. Second motor, 33. Rotating shaft, 34. Driving wheel, 35. First belt, 36. Fixed shaft, 37. Driven wheel; 4. Double-layer square frame, 41. Longitudinal roller, 42. Hook; 5. Alternating cleaning mechanism, 51. Support pipe, 52. Support shaft, 53. First rotating frame, 54. Second rotating frame, 55. Brush roller, 56. Brush bristles; 6. Flushing brush mechanism, 61. Water inlet pipe, 62. Nozzle; 7. Water collecting tank; 8. Reciprocating alternating flipping drive mechanism, 81. Support rod, 82. First limit post, 83. Second limit post, 84. Limit ring, 85. First diamond-shaped groove, 86. Second diamond-shaped groove, 87. Support rod, 871. Lower short rod, 872. Upper long rod, 873. Lower long rod, 874. Upper short rod; 9. Cleaning power mechanism, 91. Third motor, 92. Third belt, 93. First belt pulley, 94. Roller shaft, 95. Third belt pulley, 96. Second belt pulley, 97. Second belt.

[0032] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inside", "outside", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention 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, and therefore cannot be understood as a limitation to the present invention.

[0035] Such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、Figure 8 , Figure 9 , Figure 10 As shown in Figure 8 , Figure 9 , and Figure 10 , the present invention provides a cleaning device for a solar photovoltaic panel, which includes a transverse moving frame 1. The transverse moving frame 1 is laid parallel above the photovoltaic unit, and the length direction of the transverse moving frame 1 is perpendicular to the erection length direction of the photovoltaic unit. At the lower sides of both ends of the two long beams of the transverse moving frame 1, mounting rods 2 are symmetrically and fixedly provided. At the inner ends of the mounting rods 2, a first roller 22 and a second roller 21 perpendicular to each other are rotatably provided. Four groups of the first rollers 22 and the second rollers 21 are tightly engaged with the support frames at both ends in the width direction of the photovoltaic unit. The transverse moving frame 1 moves along the length direction of the photovoltaic unit through the first rollers 22 and the second rollers 21. At both ends in the length direction of the transverse moving frame 1, a longitudinal moving driving mechanism 3 is provided. Above the transverse moving frame 1, a double-layer frame 4 is arranged in parallel. At the four corners of the bottom of the double-layer frame 4, longitudinal rollers 41 are rotatably provided. The double-layer frame 4 moves along the length direction of the transverse moving frame 1 through the longitudinal rollers 41. An alternating cleaning mechanism 5 is arranged at the lower layer of the double-layer frame 4. Above the alternating cleaning mechanism 5, a flushing brush mechanism 6 is provided. A water collecting tank 7 is arranged inside the alternating cleaning mechanism 5. A reciprocating alternating flipping driving mechanism 8 is arranged at one end of the alternating cleaning mechanism 5, and a cleaning power mechanism 9 is arranged at the other end of the alternating cleaning mechanism 5.

[0036] The transverse moving frame 1 is the basic structure of the entire cleaning device. It spans across the photovoltaic unit and moves along the length direction of the photovoltaic unit. The design of the first rollers 22 and the second rollers 21 ensures that the transverse moving frame 1 can stably move along the support frame of the photovoltaic unit without deviation or derailment. The longitudinal moving driving mechanism 3 is used to drive the double-layer frame 4 to move on the transverse moving frame 1, thereby realizing the cleaning of the device in the width direction of the photovoltaic unit.

[0037] Among them, the alternating cleaning mechanism 5 includes a support pipe 51 and a support shaft 52. The support pipe 51 is fixedly arranged at the middle of one end of the lower layer of the double-layer frame 4, and the support shaft 52 is fixedly arranged at the middle of the other end of the lower layer of the double-layer frame 4. The support pipe 51 and the support shaft 52 are coaxially arranged. A first rotating frame 53 is rotatably engaged on the support pipe 51, and a second rotating frame 54 is rotatably engaged on the support shaft 52. Between both ends of the first rotating frame 53 and the second rotating frame 54, brush rollers 55 are rotatably engaged. The length directions of the two brush rollers 55 are parallel to the length direction of the photovoltaic unit. When the brush rollers 55 move in a circular motion along the axis of the support pipe 51, they are not blocked by the double-layer frame 4. Brush hairs 56 are arranged on the surfaces of the brush rollers 55.

[0038] The support pipe 51 and the support shaft 52 provide the rotation axis for the first rotating frame 53 and the second rotating frame 54. The first rotating frame 53 and the second rotating frame 54 drive the brush rollers 55 to rotate. When one brush roller 55 cleans the photovoltaic panel, the other brush roller 55 is in the state of being flushed, thereby realizing the alternation of cleaning and flushing. The brush hairs 56 on the surfaces of the brush rollers 55 can effectively remove the dirt on the surface of the photovoltaic panel.

[0039] Among them, the reciprocating alternating flipping drive mechanism 8 includes a support rod 81 and a strut 87. The support rod 81 is fixedly arranged on the support tube 51. The support rod 81 is located inside the double-layer square frame 4 and outside the first rotating frame 53. At both ends of the support rod 81, a first limit post 82 and a second limit post 83 are vertically penetrated. The first limit post 82 and the second limit post 83 are symmetrically arranged on both sides of the support tube 51. The first limit post 82 is above the second limit post 83. At positions close to the first rotating frame 53 on the first limit post 82 and the second limit post 83, limit rings 84 are arranged at intervals. The limit rings 84 are located on both sides of the support rod 81. At positions far from the first rotating frame 53 on the first limit post 82 and the second limit post 83, a first diamond-shaped groove 85 and a second diamond-shaped groove 86 are respectively penetrated. The penetration directions of the first diamond-shaped groove 85 and the second diamond-shaped groove 86 are symmetrically arranged at an angle with the moving direction of the longitudinal roller 41. The struts 87 are vertically and symmetrically fixedly arranged on the upper sides of both ends in the length direction of the transverse movement square frame 1. On the strut 87 located outside the upper edge of the inclined surface of the photovoltaic unit, a lower short rod 871 and an upper long rod 872 are vertically fixed. On the strut 87 located outside the lower edge of the inclined surface of the photovoltaic unit, an upper short rod 874 and a lower long rod 873 are vertically fixed. The lower short rod 871, the upper short rod 874, the upper long rod 872, and the lower long rod 873 are respectively located at the four corners along the clockwise direction of the upper edge of the rectangle in the vertical projection. The upper long rod 872 can abut against one inclined surface of the first diamond-shaped groove 85, the upper short rod 874 can abut against the other inclined surface of the first diamond-shaped groove 85, the lower long rod 873 can abut against one inclined surface of the second diamond-shaped groove 86, and the lower short rod 871 can abut against the other inclined surface of the second diamond-shaped groove 86.

[0040] The first limit post 82 and the second limit post 83 are used to control the rotation angle of the first rotating frame 53 and make it stop at a specific position. The limit rings 84 can prevent the first limit post 82 and the second limit post 83 from falling off the support rod 81. The cooperation between the first diamond-shaped groove 85 and the second diamond-shaped groove 86 and the lower short rod 871, the upper short rod 874, the upper long rod 872, and the lower long rod 873 on the strut 87 realizes the rotation and stop of the first rotating frame 53. When the double-layer square frame 4 moves, the lower short rod 871, the upper short rod 874, the upper long rod 872, and the lower long rod 873 will successively contact different inclined surfaces of the first diamond-shaped groove 85 and the second diamond-shaped groove 86, thereby pushing the first limit post 82 and the second limit post 83 to translate, and further blocking and releasing the first rotating frame 53.

[0041] Among them, the flushing brush mechanism 6 includes a water inlet pipe 61. The water inlet pipe 61 is fixedly arranged in the middle of the upper layer of the double-layer square frame 4. The water inlet pipe 61 is parallel to the brush roller 55. Nozzles 62 are arranged in an array along the length direction on the lower side of the water inlet pipe 61. The nozzles 62 can cover the brush roller 55. One end of the water inlet pipe 61 is closed, and the other end of the water inlet pipe 61 is connected to a water supply device through a hose.

[0042] The flushing brush mechanism 6 is used to clean the brush roller 55 in the non - working state. The water inlet pipe 61 sprays water onto the brush roller 55 through the nozzle 62 to wash the dirt on the brush roller 55 clean, and an external water supply device can provide clean water.

[0043] Among them, both ends of the water collecting tank 7 are fixedly connected to the support pipe 51 and the support shaft 52 respectively. The water collecting tank 7 is communicated with the support pipe 51. The water collecting tank 7 is located between the first rotating frame 53 and the second rotating frame 54. The water collecting tank 7 can cover the brush roller 55. The water collecting tank 7 is located between two brush rollers 55. When the brush roller 55 moves circumferentially along the axis of the support pipe 51, it is not blocked by the water collecting tank 7. When the bottom surface of the water collecting tank 7 is parallel to the inclined surface of the photovoltaic unit, the height of the side wall at one end below is greater than the height of the side wall at the other end.

[0044] The water collecting tank 7 is used to collect the sewage generated by flushing the brush roller 55 and the brush bristles 56. The water collecting tank 7 is communicated with the support pipe 51, and can divert the sewage to the outside for treatment. The shape and position design of the water collecting tank 7 ensure that it can prevent the outflow of sewage when it is inclined and will not hinder the rotation of the brush roller 55.

[0045] Among them, the cleaning power mechanism 9 includes a third motor 91, a second pulley 96 and a roller shaft 94. The third motor 91 is fixedly arranged in the middle of the lower layer at one end of the double - layer square frame 4. The output end of the third motor 91 is coaxially and fixedly provided with a first pulley 93. The second pulley 96 is coaxially and rotatably engaged on the support shaft 52. The roller shaft 94 is coaxially and fixedly arranged at one end of the brush roller 55. The roller shaft 94 rotates through the second rotating frame 54 and is coaxially and fixedly provided with a third pulley 95 at the back. A second belt 97 is connected between the first pulley 93 and the second pulley 96, and third belts 92 are connected between the second pulley 96 and the two third pulleys 95.

[0046] The third motor 91 transmits power to the two brush rollers 55 through the first pulley 93, the second belt 97, the second pulley 96, the third belt 92 and the third pulley 95, so that they rotate synchronously, thus ensuring the cleaning effect.

[0047] Among them, the longitudinal movement driving mechanism 3 includes side rods 31 and hooks 42. The side rods 31 extend symmetrically and are fixedly arranged in the middle of both ends in the length direction of the transverse movement square frame 1. A second motor 32 is fixedly arranged on the lower side of one of the side rods 31. The output end of the second motor 32 penetrates through the side rod 31 and is coaxially and fixedly provided with a rotating shaft 33. The upper end of the rotating shaft 33 is coaxially and fixedly provided with a driving wheel 34. A fixed shaft 36 is fixedly arranged on the upper side of the other side rod 31. The upper end of the fixed shaft 36 is coaxially and rotatably engaged with a driven wheel 37. A first belt 35 is connected between the driving wheel 34 and the driven wheel 37. The first belt 35 is located above the double - layer square frame 4. The hook 42 is fixedly arranged in the middle of the upper layer of the double - layer square frame 4, and the hook 42 is fixedly connected to a section of the first belt 35.

[0048] The second motor 32 drives the double-layer square frame 4 to move along the length direction of the transverse movement square frame 1 through the rotating shaft 33, the driving wheel 34, the first belt 35 and the driven wheel 37. The hook 42 connects the double-layer square frame 4 to the first belt 35, so that the double-layer square frame 4 can move along with the movement of the first belt 35.

[0049] Among them, the second rotating frame 54 is closely arranged with the second pulley 96. The second pulley 96 can drive the second rotating frame 54 to rotate in the same clockwise direction through friction. When the first rotating frame 53 is perpendicular to the photovoltaic panel, the circumferential surface where the first limiting column 82 and the second limiting column 83 are located can be tangent to the first rotating frame 53 on both sides of the first rotating frame 53. When the double-layer square frame 4 moves upward above the photovoltaic panel, the first limiting column 82 blocks the first rotating frame 53. When the double-layer square frame 4 moves upward and leaves the photovoltaic panel, the upper long rod 872 abuts against an inclined surface of the first diamond-shaped groove 85, so that the first limiting column 82 is separated from the first rotating frame 53. When the upper long rod 872 passes through the first diamond-shaped groove 85 and the second diamond-shaped groove 86 is not in contact with the lower short rod 871, the rotation angle of the first rotating frame 53 is less than 180 degrees. When the double-layer square frame 4 continues to move upward, the lower short rod 871 abuts against an inclined surface of the second diamond-shaped groove 86, so that the second limiting column 83 blocks the first rotating frame 53. When the double-layer square frame 4 moves downward and leaves the photovoltaic panel, the upper long rod 873 abuts against another inclined surface of the second diamond-shaped groove 86, so that the second limiting column 83 is separated from the first rotating frame 53. When the lower long rod 873 passes through the second diamond-shaped groove 86 and the first diamond-shaped groove 85 is not in contact with the upper short rod 874, the rotation angle of the first rotating frame 53 is less than 180 degrees. When the double-layer square frame 4 continues to move downward, the upper short rod 874 abuts against another inclined surface of the first diamond-shaped groove 85, so that the first limiting column 82 blocks the first rotating frame 53.

[0050] Among them, two first motors 23 are fixedly arranged on the long beam of the transverse movement square frame 1 at the position of the upper edge of the inclined surface of the photovoltaic unit. The output end of the first motor 23 passes through downward and is coaxially and fixedly connected with the corresponding first roller 22. The first roller 22 is closely attached to the outer side surface of the support frames at both ends in the width direction of the photovoltaic unit. The second roller 21 is closely attached to the upper side surface of the support frames at both ends in the width direction of the photovoltaic unit, and when the first rotating frame 53 is perpendicular to the photovoltaic panel, the brush hair 56 is in contact with the photovoltaic panel. The cross section of the long beam of the transverse movement square frame 1 is L-shaped and clamps the longitudinal roller 41 inside.

[0051] The first motor 23 directly drives the first roller 22, so that the device can move smoothly along the support frame of the photovoltaic unit. The long beam of the transverse movement square frame 1 adopts an L-shaped cross section, which can increase its strength and stability, and clamps the longitudinal roller 41 inside to prevent it from falling off.

[0052] Among them, the support pipe 51 is externally connected to a water pumping device through a hose.

[0053] By connecting the hose to the external pumping equipment, the sewage collected in the water collection tank 7 can be pumped away to prevent the sewage from accumulating and flowing out, and the sewage can be centrally treated to avoid secondary pollution.

[0054] The specific working process is as follows:

[0055] Preparation stage: Place the device at the starting end of the photovoltaic unit, ensure that the transverse frame 1 is laid parallel to the photovoltaic unit, and the length direction of the transverse frame 1 is perpendicular to the length direction of the photovoltaic unit. At this time, the first roller 22 and the second roller 21 rotating at the inner end of the mounting rod 2 will fit tightly on the support frame at both ends of the photovoltaic unit in the width direction, which ensures the stability of the device and the accuracy of movement.

[0056] The upward stage of longitudinal cleaning: start the longitudinal drive mechanism 3, the movement of the first belt 35 will drive the double-layer frame 4 to move along the length direction of the transverse frame 1, and the double-layer frame 4 begins to move upward along the inclined surface of the photovoltaic panel. At this time, one of the brush rollers 55 and the surface bristles 56 in the alternating cleaning mechanism 5 will contact the photovoltaic panel, and at the same time, the cleaning power mechanism 9 starts to work, driving the two brush rollers 55 to rotate synchronously. Although the second pulley 96 can drive the second rotating frame 54 to keep rotating in the same clockwise direction through friction, the first rotating frame 53 is blocked by the first limit column 82 at this time to prevent the position of the two brush rollers 55 from changing. One of the rotating brush rollers 55 begins to clean the surface of the photovoltaic panel. At the same time, the flushing brush mechanism 6 starts to work, and water flows out through the nozzles 62 of the array on the lower side of the water inlet pipe 61 to flush the other brush roller 55. The sewage generated by flushing falls into the sump 7, and the sump 7 is connected to the support pipe 51. The sewage is discharged through the support pipe 51 and then through the external pumping equipment connected to the hose for centralized treatment.

[0057] The brush roller 55 switches when it moves up to the upper end: when the double-layer frame 4 moves upward and drives away from the photovoltaic panel, the reciprocating alternating flipping drive mechanism 8 begins to work. First, the upper long rod 872 on the support rod 87 located on the outer side of the upper edge of the inclined surface of the photovoltaic unit will resist an inclined surface of the first rhombus groove 85, which will push the first limiting column 82 to translate, so that it is separated from the first rotating frame 53, so that the friction force of the second pulley 96 drives the positions of the two brush rollers 55 to begin to change. As the double-layer frame 4 continues to move upward, the upper long rod 872 passes through the first rhombus groove 85. Before the two brush rollers 55 flip 180 degrees to achieve upside down, the lower short rod 871 will resist an inclined surface of the second rhombus groove 86, pushing the second limiting column 83 to translate, so that it blocks the first rotating frame 53, so that the two brush rollers 55 flip 180 degrees and then stop. At this time, the positions of the two brush rollers 55 have been reversed.

[0058] Horizontal movement: After the double-layer square box 4 reaches the upper end of the photovoltaic unit, two first motors 23 on the long beam of the transverse movement square box 1 are started. The first motors 23 drive the first rollers 22 to rotate, so that the transverse movement square box 1 moves horizontally along the length direction of the photovoltaic unit for a certain distance to prepare for the cleaning of the next longitudinal area.

[0059] Downward stage of longitudinal cleaning and switching of the brush rollers 55: Start the longitudinal movement driving mechanism 3 again, so that the double-layer square box 4 starts to move downward. The clean brush rollers 55 will clean the photovoltaic panel, while the brush rollers 55 contaminated last time are rinsed by the flushing brush mechanism 6. When the double-layer square box 4 moves downward and drives away from the photovoltaic panel, the reciprocating alternating flipping driving mechanism 8 starts to function. First, the lower long rod 873 on the support rod 87 outside the lower edge of the inclined surface of the photovoltaic unit will abut against another inclined surface of the second diamond-shaped groove 86, which will push the second limit post 83 to translate, separating it from the first rotating frame 53, so that the positions of the two brush rollers 55 start to change under the driving force of the friction of the second belt pulley 96. As the double-layer square box 4 continues to move downward, the lower long rod 873 passes through the second diamond-shaped groove 86. Before the two brush rollers 55 are flipped 180 degrees to be upside down, the upper short rod 874 will abut against another inclined surface of the first diamond-shaped groove 85, pushing the first limit post 82 to translate, blocking the first rotating frame 53, so that the two brush rollers 55 stop after being flipped 180 degrees. At this time, the positions of the two brush rollers 55 have been reversed.

[0060] Repeat the above steps until the entire photovoltaic unit is cleaned. In the second half of each longitudinal cleaning process, the brush rollers 55 and the bristles 56 have been rinsed clean, and the flushing brush mechanism 6 can be turned off. In this way, the rinsed bristles 56 will gradually dry under the action of centrifugal force, forming a semi-dry and semi-wet state. This state can not only effectively clean the photovoltaic panel, but also avoid the spread of sewage and dust pollution.

[0061] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0062] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

[0063] The above describes the present invention and its embodiments. Such description is not restrictive. What is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, if those of ordinary skill in the art are inspired by it and, without departing from the gist of the present invention, design similar structural forms and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present invention.

Claims

1. A cleaning device for a solar photovoltaic panel, comprising a transverse moving square frame (1), characterized in that: The transverse moving square frame (1) is laid parallel to the photovoltaic unit, the length direction of the transverse moving square frame (1) is perpendicular to the erection length direction of the photovoltaic unit, mounting rods (2) are symmetrically and fixedly arranged on the lower sides of the two ends of the two long beams of the transverse moving square frame (1), a first roller (22) and a second roller (21) which are perpendicular to each other are rotatably arranged at the inner ends of the mounting rods (2), and four groups of the first rollers (22) and the second rollers (21) are closely clamped on the support frames at both ends in the width direction of the photovoltaic unit. The transverse moving square frame (1) moves along the length direction of the photovoltaic unit through the first rollers (22) and the second rollers (21). Longitudinal movement driving mechanisms (3) are arranged at both ends in the length direction of the transverse moving square frame (1). A double-layer square frame (4) is arranged parallel above the transverse moving square frame (1). Longitudinal rollers (41) are rotatably arranged at the four corners of the bottom of the double-layer square frame (4). The double-layer square frame (4) moves along the length direction of the transverse moving square frame (1) through the longitudinal rollers (41). An alternating cleaning mechanism (5) is arranged in the lower layer of the double-layer square frame (4). A flushing brush mechanism (6) is arranged above the alternating cleaning mechanism (5). A water collecting tank (7) is arranged inside the alternating cleaning mechanism (5). A reciprocating alternating flipping driving mechanism (8) is arranged at one end of the alternating cleaning mechanism (5). A cleaning power mechanism (9) is arranged at the other end of the alternating cleaning mechanism (5); The alternating cleaning mechanism (5) includes a support pipe (51), and the support pipe (51) is fixedly arranged at the middle of one end of the lower layer of the double-layer square frame (4), and a first rotating frame (53) is rotatably clamped on the support pipe (51); The reciprocating alternating flipping driving mechanism (8) includes a support rod (81) and a support bar (87). The support rod (81) is fixedly arranged on the support pipe (51). First limit posts (82) and second limit posts (83) penetrate vertically through both ends of the support rod (81). First diamond-shaped grooves (85) and second diamond-shaped grooves (86) are respectively penetrated and opened at positions far away from the first rotating frame (53) on the first limit post (82) and the second limit post (83). The support bar (87) is vertically and symmetrically fixedly arranged on the upper sides of both ends in the length direction of the transverse moving square frame (1). A lower short rod (871) and an upper long rod (872) are vertically fixedly arranged on the support bar (87) located outside the upper edge of the inclined surface of the photovoltaic unit. An upper short rod (874) and a lower long rod (873) are vertically fixedly arranged on the support bar (87) located outside the lower edge of the inclined surface of the photovoltaic unit.

2. The cleaning device for a solar photovoltaic panel according to claim 1, wherein: The alternating cleaning mechanism (5) further includes a support shaft (52), the support shaft (52) is fixedly arranged at the middle of the other end of the lower layer of the double-layer square frame (4), the support tube (51) and the support shaft (52) are coaxially arranged, a second rotating frame (54) is rotatably clamped on the support shaft (52), and brush rollers (55) are rotatably clamped between the two ends of the first rotating frame (53) and the second rotating frame (54). The length directions of the two brush rollers (55) are parallel to the length direction of the photovoltaic unit. When the brush rollers (55) move in a circular motion along the axis of the support tube (51), they are not blocked by the double-layer square frame (4). The surface of the brush rollers (55) is provided with bristles (56).

3. The cleaning device for a solar photovoltaic panel according to claim 2, characterized in that: The support rod (81) is located inside the double-layer square frame (4), the support rod (81) is located outside the first rotating frame (53), the first limiting post (82) and the second limiting post (83) are symmetrically arranged on both sides of the support tube (51), the first limiting post (82) is located above the second limiting post (83), and limiting rings (84) are arranged at intervals at positions close to the first rotating frame (53) on the first limiting post (82) and the second limiting post (83). The limiting rings (84) are located on both sides of the support rod (81). The through directions of the first diamond-shaped groove (85) and the second diamond-shaped groove (86) are symmetrically arranged at an angle with the moving direction of the longitudinal roller (41). The lower short rod (871), the upper short rod (874), the upper long rod (872) and the lower long rod (873) are respectively located at the four corners of the upper edge of the rectangle in the vertical projection in the clockwise direction. The upper long rod (872) can abut against one inclined surface of the first diamond-shaped groove (85), the upper short rod (874) can abut against the other inclined surface of the first diamond-shaped groove (85), the lower long rod (873) can abut against one inclined surface of the second diamond-shaped groove (86), and the lower short rod (871) can abut against the other inclined surface of the second diamond-shaped groove (86).

4. The cleaning device for a solar photovoltaic panel according to claim 3, characterized in that: The flushing brush mechanism (6) includes a water inlet pipe (61), the water inlet pipe (61) is fixedly arranged at the middle of the upper layer of the double-layer square frame (4), the water inlet pipe (61) is parallel to the brush roller (55), a nozzle (62) is arranged in an array and communicated along the length direction on the lower side of the water inlet pipe (61), the nozzle (62) can cover the brush roller (55), one end of the water inlet pipe (61) is closed, and the other end of the water inlet pipe (61) is connected to a water supply device through a hose.

5. The cleaning device for a solar photovoltaic panel according to claim 4, wherein: Both ends of the water collecting tank (7) are fixedly connected to the support tube (51) and the support shaft (52) respectively. The water collecting tank (7) is communicated with the support tube (51). The water collecting tank (7) is located between the first rotating frame (53) and the second rotating frame (54). The water collecting tank (7) can cover the brush roller (55). The water collecting tank (7) is located between the two brush rollers (55). When the brush roller (55) moves in a circular motion along the axis of the support tube (51), it is not blocked by the water collecting tank (7). When the bottom surface of the water collecting tank (7) is parallel to the inclined surface of the photovoltaic unit, the height of the side wall at one end located below is greater than the height of the side wall at the other end.

6. The cleaning device for a solar photovoltaic panel according to claim 5, characterized in that: The cleaning power mechanism (9) includes a third motor (91), a second pulley (96) and a roller shaft (94). The third motor (91) is fixedly arranged at the middle of one end of the lower layer of the double-layer square frame (4). The output end of the third motor (91) is coaxially and fixedly provided with a first pulley (93). The second pulley (96) is coaxially and rotatably engaged on the support shaft (52). The roller shaft (94) is coaxially and fixedly arranged at one end of the brush roller (55). The roller shaft (94) rotatably penetrates through the second rotating frame (54) and is coaxially and fixedly provided with a third pulley (95). A second belt (97) is connected between the first pulley (93) and the second pulley (96). Third belts (92) are connected between the second pulley (96) and the two third pulleys (95).

7. The cleaning device for a solar photovoltaic panel according to claim 6, characterized in that: The longitudinal movement driving mechanism (3) includes a side rod (31) and a hook (42). The side rods (31) extend outwards and are symmetrically and fixedly arranged at the middle of both ends in the length direction of the transverse movement square frame (1). A second motor (32) is fixedly arranged on the lower side of one of the side rods (31). The output end of the second motor (32) penetrates through the side rod (31) and is coaxially and fixedly provided with a rotating shaft (33). The upper end of the rotating shaft (33) is coaxially and fixedly provided with a driving wheel (34). A fixed shaft (36) is fixedly arranged on the upper side of the other side rod (31). The upper end of the fixed shaft (36) is coaxially and rotatably engaged with a driven wheel (37). A first belt (35) is connected between the driving wheel (34) and the driven wheel (37). The first belt (35) is located above the double-layer square frame (4). The hook (42) is fixedly arranged at the middle of the upper layer of the double-layer square frame (4). The hook (42) is fixedly connected with a section of the first belt (35).

8. The cleaning device for a solar photovoltaic panel according to claim 7, characterized in that: The second rotating frame (54) is closely arranged with the second belt pulley (96). The second belt pulley (96) can drive the second rotating frame (54) to rotate in the same clockwise direction through friction. When the first rotating frame (53) is perpendicular to the photovoltaic panel, the circumferential surface where the first limiting post (82) and the second limiting post (83) are located can be tangent to the first rotating frame (53) on both sides of the first rotating frame (53). When the double-layer square frame (4) moves upward above the photovoltaic panel, the first limiting post (82) blocks the first rotating frame (53). When the double-layer square frame (4) moves upward and leaves the photovoltaic panel, the upper long rod (872) abuts against one inclined surface of the first diamond-shaped groove (85) so that the first limiting post (82) is separated from the first rotating frame (53). When the upper long rod (872) passes through the first diamond-shaped groove (85) and the second diamond-shaped groove (86) is not in contact with the lower short rod (871), the rotation angle of the first rotating frame (53) is less than 180 degrees. When the double-layer square frame (4) continues to move upward, the lower short rod (871) abuts against one inclined surface of the second diamond-shaped groove (86) so that the second limiting post (83) blocks the first rotating frame (53). When the double-layer square frame (4) moves downward and leaves the photovoltaic panel, the upper long rod (873) abuts against the other inclined surface of the second diamond-shaped groove (86) so that the second limiting post (83) is separated from the first rotating frame (53). When the lower long rod (873) passes through the second diamond-shaped groove (86) and the first diamond-shaped groove (85) is not in contact with the upper short rod (874), the rotation angle of the first rotating frame (53) is less than 180 degrees. When the double-layer square frame (4) continues to move downward, the upper short rod (874) abuts against the other inclined surface of the first diamond-shaped groove (85) so that the first limiting post (82) blocks the first rotating frame (53).

9. The cleaning device for a solar photovoltaic panel according to claim 8, characterized in that: Two first motors (23) are fixedly arranged on the long beam of the transverse moving square frame (1) at the position of the upper edge of the inclined surface of the photovoltaic unit. The output end of the first motor (23) passes through downward and is coaxially and fixedly connected with the corresponding first roller (22). The first roller (22) is closely attached to the outer side surface of the support frames at both ends in the width direction of the photovoltaic unit. The second roller (21) is closely attached to the upper side surface of the support frames at both ends in the width direction of the photovoltaic unit, and when the first rotating frame (53) is perpendicular to the photovoltaic panel, the brush hair (56) is in contact with the photovoltaic panel. The cross-section of the long beam of the transverse moving square frame (1) is L-shaped and clamps the longitudinal roller (41) inside.

10. The cleaning device for a solar photovoltaic panel according to claim 9, characterized in that: The support pipe (51) is externally connected to a water pumping device through a hose.

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