Straddle type photovoltaic cleaning equipment

Abstract

The invention discloses straddle type photovoltaic cleaning equipment, belongs to the technical field of photovoltaic cleaning, and solves the problems that existing equipment is poor in walking stability and low in cleaning efficiency. The equipment comprises a mobile carrier, a straddle mechanism and a cleaning mechanism, the straddle mechanism longitudinally straddles the front and rear sides of the photovoltaic equipment and comprises a supporting frame, the lower part of the supporting frame is provided with a limiting assembly and a roller assembly, the limiting assembly is in contact with the front and rear side surfaces of the photovoltaic equipment to limit offset, and the roller assembly moves along the upper surface of the photovoltaic equipment to provide support; a first driving assembly on the straddle mechanism drives the cleaning mechanism to move back and forth; the cleaning mechanism comprises a mounting frame and two parallel brush rollers, and the brush rollers are driven to rotate through a second driving assembly. Stable walking is achieved through cooperation of the limiting assemblies and the rolling wheel assemblies, the cleaning efficiency and effect are improved through the double-brush-roller design, the protection performance is enhanced by additionally arranging the limiting baffles, the buffer plates and the ash receiving plates, adaptability is high, and the device is suitable for large-scale cleaning operation of various large photovoltaic power stations.

Description

Technical Field

[0001] This application relates to the field of photovoltaic cleaning technology, and in particular to a straddle-type photovoltaic cleaning device. Background Technology

[0002] With the rapid development of the photovoltaic energy industry, the installation scale of photovoltaic modules is constantly expanding, and they are widely used in various scenarios such as ground-mounted photovoltaic power stations and rooftop photovoltaic systems. The power generation efficiency of photovoltaic modules is directly affected by the cleanliness of their surfaces. When exposed to the outdoor environment for a long time, their surfaces are prone to accumulating pollutants such as dust, sand, fallen leaves, and bird droppings. These pollutants can block sunlight, reduce the photoelectric conversion efficiency of photovoltaic modules, and in severe cases, may even cause hot spot effects, damaging photovoltaic modules and shortening their service life.

[0003] Currently, photovoltaic (PV) module cleaning methods mainly fall into two categories: manual cleaning and mechanical cleaning. Manual cleaning uses water guns or manual wiping, which, while achieving good cleaning results, suffers from high labor intensity, low efficiency, and high labor costs, making it particularly unsuitable for large-scale cleaning operations in ground-mounted PV power plants. Mechanical cleaning equipment includes various types such as tracked, rail-mounted, and drone-mounted systems. Tracked and rail-mounted cleaning equipment require pre-set tracks or rely on specific walking mechanisms, resulting in poor adaptability and an inability to flexibly adapt to PV modules of different specifications and installation angles. Drone-mounted cleaning equipment is limited by its endurance, resulting in a limited cleaning range, and the cleaning pressure is difficult to control precisely, easily causing damage to the surface of the PV modules.

[0004] While some straddle-type cleaning devices exist in the current technology, they generally suffer from unreasonable structural design and poor stability. During the cleaning process, the device is prone to shifting along the surface of the photovoltaic modules, resulting in incomplete cleaning or even collisions that could damage the modules. Furthermore, existing straddle-type cleaning devices have a single driving mechanism, leading to low cleaning efficiency, and dust generated during the cleaning process can easily re-spread into the cleaned area, affecting the cleaning effect. Therefore, developing a straddle-type photovoltaic cleaning device that is stable in movement, highly efficient in cleaning, and highly adaptable has become an urgent technical problem to be solved in the current photovoltaic cleaning field. Summary of the Invention

[0005] The present invention addresses the aforementioned problems in the existing technology by providing a straddle-type photovoltaic cleaning device.

[0006] The objective of this invention is primarily achieved through the following approach: A straddle-type photovoltaic cleaning device includes a mobile carrier, a straddle mechanism installed on the front side of the mobile carrier, and a cleaning mechanism installed on the straddle mechanism; The straddle mechanism is longitudinally installed on the front and rear sides of the photovoltaic device, including a support frame. The lower front and rear sides of the support frame are provided with limiting components, which contact the front and rear sides of the photovoltaic device respectively and can move along its sidewalls. The lower front and rear sides of the support frame are also provided with roller assemblies, which can move along the upper surface of the photovoltaic device. The straddle mechanism is also equipped with a first drive assembly. The cleaning mechanism is installed on the upper surface of the support frame and is driven to move back and forth by the first drive component; the cleaning mechanism includes a mounting frame, on which two parallel brush rollers are rotatably connected, and the brush rollers are driven to rotate by the second drive component on the mounting frame.

[0007] Preferably, the support frame includes four connecting plates that are joined end to end, and each of the four connecting plates has a limiting baffle extending upward from its edge.

[0008] Preferably, support feet are installed at the four corners of the lower surface of the support frame, and the limiting component adopts a horizontally arranged limiting roller. A first fixing rod is rotatably connected to the middle of the limiting roller, and the top of the first fixing rod is fixedly connected to the bottom of the support foot.

[0009] Preferably, the roller assembly adopts a vertically arranged support roller, and a second fixing rod is rotatably connected to the middle of the support roller, with one end of the second fixing rod fixedly connected to the side wall of the support foot.

[0010] Preferably, the lower surface of the support frame is provided with a dust collection plate located in front of the front support foot. When the cleaning mechanism moves to the front end of the support frame, the dust collection plate is located directly below the cleaning mechanism.

[0011] Preferably, the first drive assembly includes a first gear, a second gear, a gear belt, and a first drive motor. Support plates are installed at both the front and rear ends of the support frame. The first gear and the second gear are rotatably connected to the front and rear support plates respectively via a rotating shaft. The first drive motor is installed on one of the support plates and is fixedly connected to the rotating shaft on the support plate. The first gear and the second gear are connected by a gear belt.

[0012] Preferably, the upper surface of the mounting frame is equipped with a plurality of fixing blocks arranged in front and behind, and the fixing blocks are fixedly connected to the side wall of the gear belt.

[0013] Preferably, the left and right sides and the front and rear ends of the mounting frame are rotatably connected to movable rollers via rotating shafts. The movable rollers on the left and right sides are respectively located on the upper surfaces of the left and right connecting plates, and the outer side wall of the movable roller is in contact with the inner side of the limiting baffle.

[0014] Preferably, the mounting frame is provided with arc-shaped buffer plates on both the front and rear sides and the left and right ends.

[0015] Preferably, the second drive assembly includes a first pulley, a second pulley, a third pulley, a fourth pulley, a first transmission belt, a second transmission belt, a third transmission belt, and a second drive motor. The second drive motor is fixedly mounted on the mounting frame, and the output end of the second drive motor is fixedly fitted with the first pulley. The second pulley is rotatably connected to the mounting frame and located between two brush rollers. The third pulley and the fourth pulley are respectively fixedly fitted on the two brush rollers. The first pulley and the second pulley are connected by the first transmission belt, the second pulley and the third pulley are connected by the second transmission belt, and the second pulley and the fourth pulley are connected by the third transmission belt. The diameter of the first pulley is smaller than the diameter of the second pulley, the diameter of the second pulley is smaller than the diameter of the third pulley, and the diameter of the third pulley is the same as the diameter of the fourth pulley.

[0016] In summary, compared with the prior art, the present invention has the following beneficial technical effects: (1) The present invention has high walking stability. Through the coordinated cooperation of the limiting component and the roller component of the straddling mechanism, the equipment can walk stably along the photovoltaic module. The limiting component adopts horizontally set limiting rollers that contact the front and rear sides of the photovoltaic equipment, which can limit the equipment's deviation in the front and rear directions. The roller component adopts vertically set support rollers that move along the upper surface of the photovoltaic equipment, providing stable support for the equipment and reducing friction during the walking process. The combination of the two makes the equipment less prone to deviation and shaking during the cleaning process, effectively avoiding collision damage between the equipment and the photovoltaic module. (2) The present invention has high cleaning efficiency and good effect. The cleaning mechanism is equipped with two parallel brush rollers, which are driven to rotate synchronously by the second drive component, thereby expanding the coverage of a single cleaning and improving the cleaning efficiency. At the same time, the double brush rollers can perform secondary cleaning on the surface of the photovoltaic module, enhancing the cleaning effect. The first drive component drives the cleaning mechanism to move back and forth through the transmission of gears and gear belts. The transmission is smooth and the power is sufficient, ensuring that the cleaning mechanism can fully cover the surface of the photovoltaic module and avoid cleaning dead corners. (3) The present invention has excellent protective performance. The connecting plate of the support frame extends upward and is provided with a limiting baffle, which can limit and guide the moving roller of the cleaning mechanism to prevent the cleaning mechanism from tipping over during movement. The front and rear sides of the mounting frame are provided with arc-shaped buffer plates, which can buffer the cleaning mechanism when it moves to the front and rear ends of the support frame, reduce collision impact, and extend the service life of the equipment. In addition, the dust collection plate provided on the front side of the support frame can collect dust and debris, prevent them from falling into the cleaned area again, and further improve the cleaning effect. (4) The present invention is highly adaptable. Through the cooperation of the support feet, limiting rollers and support rollers, it can be adapted to photovoltaic modules of different thicknesses and widths. The setting of the mobile carrier enables the equipment to be flexibly transferred to different photovoltaic module areas without the need for a pre-set track. It is suitable for large-scale cleaning operations of various large photovoltaic power plants. (5) The present invention has a compact structure and is easy to maintain. The components are rationally arranged. The support frame and the mounting frame are modularly designed, which is convenient for assembly and disassembly. The drive component adopts conventional transmission methods of gear transmission and belt transmission, which is simple in structure, highly reliable, and has low maintenance costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a straddle-type photovoltaic cleaning device according to the present invention; Figure 2 This is a front view of the straddle-type photovoltaic cleaning device of the present invention; Figure 3 This is a schematic diagram of the straddle mechanism and cleaning mechanism in the straddle-type photovoltaic cleaning equipment of the present invention; Figure 4 This is a schematic diagram of the cleaning mechanism in the straddle-type photovoltaic cleaning equipment of the present invention; Figure 5 This is a schematic diagram of the structure of the second drive component in the straddle-type photovoltaic cleaning device of the present invention.

[0018] Reference numerals: 1-Mobile carrier; 2-Support frame; 3-Mounting frame; 4-Brush roller; 5-Connecting plate; 6-Limiting baffle; 7-Support foot; 8-Limiting roller; 9-First fixing rod; 10-Supporting roller; 11-Second fixing rod; 12-Dust receiving plate; 13-First gear; 14-Second gear; 15-Gear belt; 16-First drive motor; 17-Support plate; 18-Second drive motor; 19-Fixing block; 20-Mobile roller; 21-Arc-shaped buffer plate; 22-First pulley; 23-Second pulley; 24-Third pulley; 25-Fourth pulley; 26-First transmission belt; 27-Second transmission belt; 28-Third transmission belt. Detailed Implementation

[0019] The technical solution of the present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the implementation of the present invention is not limited to the following embodiments, and any modifications and / or alterations made to the present invention will fall within the protection scope of the present invention.

[0020] like Figure 1-5As shown, this invention discloses a technical solution: a straddle-type photovoltaic cleaning device, comprising a mobile carrier 1, a straddle mechanism, and a cleaning mechanism. The mobile carrier 1 is a tracked mobile vehicle with good mobility and load-bearing capacity, capable of driving the straddle mechanism and the cleaning mechanism to move on the photovoltaic device. The straddle mechanism is installed on the front side of the mobile carrier 1 to achieve stable straddling and movement of the device on the photovoltaic module. The cleaning mechanism is installed on the straddle mechanism to complete the cleaning operation on the surface of the photovoltaic module.

[0021] The straddling mechanism includes a support frame 2, which is a rectangular frame structure formed by welding four connecting plates 5 end to end. Each of the four connecting plates 5 has an integrally extending limit baffle 6 at its edge, with a height of 5-8cm, used to limit and guide the movement of the cleaning mechanism. Support feet 7, made of stainless steel, are bolted to the four corners of the lower surface of the support frame 2, providing sufficient strength and corrosion resistance. Multiple fixing holes are provided along the length of the left and right connecting plates 5, and the support feet 7 are detachably fixed to the connecting plates 5 via fixing bolts in these holes, allowing for adaptive adjustment according to the width of the actual photovoltaic panel.

[0022] Limiting components are provided on both the front and rear sides of the lower part of the support frame 2. The limiting components are horizontally arranged limiting rollers 8. The middle of the limiting rollers 8 is rotatably connected to the first fixing rod 9 via a bearing. The top of the first fixing rod 9 is fixedly connected to the bottom of the support foot 7 by a thread. The limiting rollers 8 on the front and rear sides contact the front and rear sides of the photovoltaic equipment, respectively, and the wheel surface of the limiting rollers 8 is in close contact with the side wall of the photovoltaic equipment. When the equipment moves, the limiting rollers 8 roll along the side wall of the photovoltaic equipment, limiting the equipment's displacement in the front-rear direction.

[0023] The lower front and rear sides of the support frame 2 are also equipped with roller assemblies. The roller assemblies adopt vertically arranged support rollers 10. The middle of the support roller 10 is rotatably connected to a second fixing rod 11 through a bearing. One end of the second fixing rod 11 is fixed to the side wall of the support foot 7 by welding. The wheel surface of the support roller 10 contacts the upper surface of the photovoltaic equipment, providing vertical support for the equipment and reducing friction during the movement of the equipment, so that the equipment can move smoothly.

[0024] The lower surface of the support frame 2, located in front of the front support foot 7, is also bolted with a dust collection plate 29. The dust collection plate 29 is inclined at an angle of 15-20° to facilitate dust sliding and collection. When the cleaning mechanism moves to the front end of the support frame 2, the dust collection plate 29 is located directly below the cleaning mechanism, which can promptly collect the dust and debris swept off by the brush roller 4, avoiding secondary pollution.

[0025] The straddle mechanism is also equipped with a first drive assembly, which includes a first gear 13, a second gear 14, a gear belt 15, and a first drive motor 16. Support plates 17 are bolted to both ends of the support frame 2. The first gear 13 and the second gear 14 are rotatably connected to the two support plates 17 via shafts and bearings, respectively. The first gear 13 and the second gear 14 are of the same specifications to ensure smooth transmission. The first drive motor 16 is bolted to one of the support plates 17. The first drive motor 16 is a servo motor with precise speed control. The output end of the first drive motor 16 is fixedly connected to the shaft on the support plate 17 via a coupling. The first gear 13 and the second gear 14 are meshed together via the gear belt 15. When the first drive motor 16 operates, it drives either the first gear 13 or the second gear 14 to rotate, which in turn drives the other gear to rotate synchronously via the gear belt 15, achieving the cyclic movement of the gear belt 15.

[0026] The cleaning mechanism is installed on the upper surface of the support frame 2, including the mounting frame 3. The mounting frame 3 adopts a rectangular frame structure, and movable rollers 20 are rotatably connected to its left and right sides and front and rear ends via shafts and bearings. The movable rollers 20 on the left and right sides are located on the upper surfaces of the left and right connecting plates 5, and the outer walls of the movable rollers 20 are in contact with the inner side of the limiting baffles 6. The limiting baffles 6 can restrict the left and right movement of the movable rollers 20 to prevent the cleaning mechanism from tipping over. Arc-shaped buffer plates 21 are fixed to the front and rear sides and left and right ends of the mounting frame 3 by bolts. The arc-shaped buffer plates 21 are made of rubber and have good cushioning performance. When the cleaning mechanism moves to the front and rear ends of the support frame 2, the arc-shaped buffer plates 21 contact the support plates 17 to reduce collision impact.

[0027] The upper surface of the mounting frame 3 is fixed with a number of front and rear fixed blocks 19 by bolts. There are 3 fixed blocks 19, which are evenly distributed on the upper surface of the mounting frame 3. The fixed blocks 19 are fixedly connected to the side wall of the gear belt 15 by bolts. When the gear belt 15 moves in a cycle, the fixed blocks 19 drive the mounting frame 3 to move back and forth, thereby driving the cleaning mechanism to move back and forth as a whole.

[0028] Two parallel brush rollers 4 are rotatably connected to the mounting frame 3 via bearings. The surface of each brush roller 4 is evenly covered with flexible bristles made of nylon, which effectively cleans dust without damaging the photovoltaic module surface. A second drive assembly is also mounted on the mounting frame 3 to drive the brush rollers 4. This second drive assembly includes a first pulley 22, a second pulley 23, a third pulley 24, a fourth pulley 25, a first transmission belt 26, a second transmission belt 27, a third transmission belt 28, and a second drive motor 18. The second drive motor 18 is bolted to the mounting frame 3 and is a stepper motor with good speed regulation performance. The output end of the second drive motor 18 is fixedly fitted onto the first pulley 22 via a key. The second pulley 23 is rotatably connected to the mounting frame 3 via a shaft and bearings, and is located between the two brush rollers 4. The third pulley 24 and the fourth pulley 25 are respectively fixedly fitted onto the ends of the two brush rollers 4 via keys. The first pulley 22 and the second pulley 23 are connected by a first drive belt 26, the second pulley 23 and the third pulley 24 are connected by a second drive belt 27, and the second pulley 23 and the fourth pulley 25 are connected by a third drive belt 28. The diameter of the first pulley 22 is smaller than the diameter of the second pulley 23, the diameter of the second pulley 23 is smaller than the diameter of the third pulley 24, and the diameter of the third pulley 24 is the same as the diameter of the fourth pulley 25. This difference in pulley diameters achieves speed reduction, ensuring that the brush roller 4 rotates at a suitable speed, thus improving the cleaning effect.

[0029] The working process of this embodiment is as follows: 1. Equipment transfer: The support frame 2 of the straddling mechanism straddles the photovoltaic module, and then the moving carrier 1 is connected to the support frame 2 by bolts. At this time, the limiting roller 8 is in contact with the front and rear sides of the photovoltaic module, and the support roller 10 is in contact with the upper surface of the photovoltaic module, thus completing the positioning of the equipment.

[0030] 2. Cleaning preparation: Start the second drive motor 18. The second drive motor 18 drives the first pulley 22 to rotate, which drives the second pulley 23 to rotate through the first transmission belt 26. The second pulley 23 drives the third pulley 24 and the fourth pulley 25 to rotate through the second transmission belt 27 and the third transmission belt 28 respectively, thereby driving the two brush rollers 4 to rotate synchronously.

[0031] 3. Cleaning Operation: Start the first drive motor 16, which drives the first gear 13 or the second gear 14 to rotate. This drives the mounting frame 3 to move back and forth via the gear belt 15. The mounting frame 3 then drives the brush roller 4 to move back and forth along the surface of the photovoltaic module, performing a thorough cleaning of the photovoltaic module surface. During the cleaning process, the falling dust and debris are collected by the dust collection plate 29 below. When the cleaning mechanism moves to the front and rear ends of the support frame 2, the arc-shaped buffer plate 21 contacts the support plate 17, providing a buffering and protective function.

[0032] 4. Operation completed: After the photovoltaic module surface is cleaned, turn off the first drive motor 16 and the second drive motor 18, and transfer the equipment to the next photovoltaic module area that needs to be cleaned by the mobile carrier 1, and repeat the above cleaning process.

[0033] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A straddling photovoltaic cleaning apparatus, characterized by: The cleaning device comprises a moving carrier (1), a striding mechanism installed on the front side of the moving carrier (1), and a cleaning mechanism installed on the striding mechanism; The striding mechanism is longitudinally installed on the front and back sides of the photovoltaic device and comprises a support frame (2). The lower front and back sides of the support frame (2) are provided with limiting assemblies, which are in contact with the front and back sides of the photovoltaic device and can move along the side walls of the photovoltaic device. The lower front and back sides of the support frame (2) are also provided with roller assemblies, which can move along the upper surface of the photovoltaic device. The striding mechanism is also provided with a first driving assembly. The cleaning mechanism is installed on the upper surface of the support frame (2) and is driven by the first driving assembly to move forward and backward. The cleaning mechanism comprises an installation frame (3), and two brush rollers (4) are rotatably connected to the installation frame (3) in parallel.

2. The straddling photovoltaic cleaning apparatus according to claim 1, characterized by: The support frame (2) comprises four connecting plates (5) connected end to end. The edges of the four connecting plates (5) are upwardly extended and provided with limiting baffle plates (6).

3. The straddling photovoltaic cleaning apparatus according to claim 2, characterized by: The lower surface of the support frame (2) is provided with support feet (7) at the four corners. The limiting assemblies are limiting rollers (8) arranged horizontally. The middle part of the limiting roller (8) is rotatably connected with a first fixed rod (9), and the top of the first fixed rod (9) is fixedly connected with the bottom of the support feet (7).

4. The straddling photovoltaic cleaning apparatus according to claim 3, characterized by: The roller assemblies are support rollers (10) arranged vertically. The middle part of the support roller (10) is rotatably connected with a second fixed rod (11), and one end of the second fixed rod (11) is fixedly connected with the side wall of the support feet (7).

5. The straddling photovoltaic cleaning apparatus according to claim 4, characterized in that: The lower surface of the support frame (2) is further provided with a dust collecting plate (12) in front of the front support feet (7). When the cleaning mechanism moves to the front end of the support frame (2), the dust collecting plate (12) is located directly below the cleaning mechanism.

6. The straddling photovoltaic cleaning apparatus according to claim 1, characterized in that: The first driving assembly comprises a first gear (13), a second gear (14), a gear belt (15), and a first driving motor (16). The front and back ends of the support frame (2) are provided with support plates (17). The first gear (13) and the second gear (14) are rotatably connected to the front and back support plates (17) through shafts. One of the support plates (17) is provided with the first driving motor (16), which is fixedly connected with the shaft of the support plate (17). The first gear (13) and the second gear (14) are connected through the gear belt (15).

7. The straddling photovoltaic cleaning apparatus according to claim 6, characterized in that: The upper surface of the installation frame (3) is provided with a plurality of fixed clamping blocks (19) arranged in front and back. The fixed clamping blocks (19) are fixedly connected with the side walls of the gear belt (15).

8. The straddling photovoltaic cleaning apparatus according to claim 2, characterized by: The left and right sides of the installation frame (3) are rotatably connected with moving rollers (20) at the front and back ends through shafts. The moving rollers (20) on the left and right sides are located on the upper surfaces of the left and right connecting plates (5), and the outer side walls of the moving rollers (20) are in contact with the inner sides of the limiting baffle plates (6).

9. The straddling photovoltaic cleaning apparatus according to claim 8, characterized in that: The mounting frame (3) is provided with arc-shaped buffer plates (21) at the left and right ends of the front and rear sides.

10. The straddling photovoltaic cleaning apparatus according to claim 1, characterized in that: The second driving assembly comprises a first belt wheel (22), a second belt wheel (23), a third belt wheel (24), a fourth belt wheel (25), a first transmission belt (26), a second transmission belt (27), a third transmission belt (28) and a second driving motor (18). The second driving motor (18) is fixedly installed on the mounting frame (3), and the output end of the second driving motor (18) is fixedly sleeved with the first belt wheel (22). The second belt wheel (23) is rotatably connected to the mounting frame (3) and located between the two brush rollers (4). The third belt wheel (24) and the fourth belt wheel (25) are fixedly sleeved on the two brush rollers (4) respectively. The first belt wheel (22) and the second belt wheel (23) are connected through the first transmission belt (26). The second belt wheel (23) and the third belt wheel (24) are connected through the second transmission belt (27). The second belt wheel (23) and the fourth belt wheel (25) are connected through the third transmission belt (28). The diameter of the first belt wheel (22) is smaller than that of the second belt wheel (23), the diameter of the second belt wheel (23) is smaller than that of the third belt wheel (24), and the diameter of the third belt wheel (24) is consistent with that of the fourth belt wheel (25).

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