Automatic photovoltaic panel cleaning equipment
By using an adjustable front and rear roller spacing design and a combination of various structures, the problem of poor cleaning effect of photovoltaic panel cleaning equipment when facing thick dirt has been solved, achieving efficient and flexible photovoltaic panel cleaning and avoiding roller brush contamination and wear.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-23
- Publication Date
- 2026-03-10
AI Technical Summary
Existing photovoltaic panel cleaning equipment has a fixed gap between the front and rear rollers when dealing with thick dirt, which cannot provide sufficient space for wet transition, resulting in poor cleaning effect. In addition, the cleaning rollers are prone to contamination, leading to repeated pollution.
It adopts an adjustable front and rear roller frame spacing design, combined with a servo electric cylinder, a dual-output shaft motor, a key shaft transmission structure, and a parallel pipe spraying structure. The roller spacing is adjusted by the servo electric cylinder, the dual-output shaft motor drives the rollers to rotate, the parallel pipe spraying structure sprays clean water, and the elastic wiping roller structure assists in cleaning, thus achieving a self-cleaning function.
It enables dynamic adjustment of roller spacing based on the type of dirt, improving cleaning efficiency, reducing brush wear and scratch risk, enhancing cleaning effect, and preventing dirt accumulation between rollers, thus forming an efficient and flexible photovoltaic panel cleaning process.
Smart Images
Figure CN121624145A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of photovoltaic panel cleaning, and particularly relates to an automatic photovoltaic panel cleaning device. BACKGROUND
[0002] The cleaning device for outdoor photovoltaic panels removes various dust, dirt, bird droppings and organic residues attached to the surface of the photovoltaic panels, thereby solving the problem of the decrease in photoelectric conversion efficiency caused by the blocking of sunlight by pollutants. The main body of the device is made of high-strength weather-resistant material to resist outdoor wind and rain erosion. The moving system is usually a track or wheel mechanism to ensure stable movement on inclined or uneven photovoltaic panel surfaces. The core double-roller head is composed of two rollers with different functions. One focuses on stripping stubborn stains through rigid bristles, and the other uses soft materials for polishing and wiping to achieve residue-free cleaning. The robot is internally integrated with an intelligent control system and various environmental sensors for autonomous navigation and cleaning decision-making, and is equipped with a rechargeable power module and an optional cleaning liquid spraying system to enhance the cleaning effect. As disclosed in the authorized announcement CN222659351U, a photovoltaic panel cleaning robot includes a body, a rotating cleaning element and a water spraying system are arranged on the body, the water spraying system includes a spraying port arranged in front of the rotating cleaning element and used for spraying water to flush the photovoltaic panel, the height of the spraying port is lower than the height of the highest part of the rotating cleaning element, which shortens the distance from the water sprayed from the spraying port to the photovoltaic panel, thereby increasing the flushing force of the water sprayed from the spraying port on the photovoltaic panel and improving the cleaning capacity. It can be seen from the above technical solution that the existing photovoltaic panel cleaning technology and cleaning operation method are basically the same, that is, the double-roller head closely adheres to the panel surface and rotates during movement, the front roller is responsible for forcibly removing large attached objects, and the rear roller (if equipped) performs fine wiping and water absorption. The front and rear rollers are generally driven by the same power source and are connected by a belt or a chain, and the distance between the two rollers cannot be adjusted. When encountering thick dirt, the fixed distance between the front and rear rollers cannot provide sufficient transition space, so that the front roller and the water do not fully wet the dirt, causing the rear roller to contact the dirt that has not been completely pretreated too early. In addition, the front roller is responsible for stripping the dirt, and the bristles will inevitably roll in and leave a large amount of dirt, such as wet mud and bird droppings. When the rear roller performs secondary wiping, it will also become wet and contaminated with fine dust transferred from the panel surface. Due to the lack of a self-cleaning mechanism, these pollutants will continue to accumulate in the bristles or sponge material of the double roller. When the pollutants accumulate to a certain extent, the front roller is no longer an effective cleaning tool, but rather a dirty cloth that repeatedly contaminates the surface of the photovoltaic panel, which greatly reduces the cleaning effect. SUMMARY
[0003] The purpose of the present application is to provide an automatic photovoltaic panel cleaning device, a beam frame is installed at the front end of the photovoltaic panel cleaning robot, the device is driven to move on the photovoltaic panel by the walking mechanism of the photovoltaic panel cleaning robot, the operator adjusts the distance between the front roller frame and the rear roller frame through the servo electric cylinder according to the dirt condition on the photovoltaic panel, the double-output shaft motor and the key shaft transmission structure jointly drive the front and cleaning rollers to rotate during cleaning, and the parallel pipe spray structure sprays water on the front and cleaning rollers, so as to complete the cleaning of the photovoltaic panel, and the elastic wiping roller structure assists the cleaning roller to complete self-cleaning during cleaning, thereby solving the problems in the above background art.
[0004] To achieve the above object, the present application provides the following technical scheme: an automatic photovoltaic panel cleaning device, comprising a rear roller frame, a beam frame arranged above the rear roller frame and connected with the front end of the photovoltaic panel cleaning robot, and a front roller frame slidingly installed on the outer wall of one side of the rear roller frame, the inner part of the rear roller frame and the front roller frame is respectively rotatably installed with a rear cleaning roller and a front cleaning roller through bearings, a servo electric cylinder is installed on the outer wall of the side of the rear roller frame close to the front roller frame, the top end of the piston rod of the servo electric cylinder is fixedly connected with the outer wall of one side of the front roller frame and adjusts the distance between the rear cleaning roller and the front cleaning roller, the outer wall of the same side of the rear roller frame and the front roller frame is provided with an elastic wiping roller structure, the two elastic wiping roller structures are respectively in contact with the roller surface of the rear cleaning roller and the front cleaning roller, a parallel pipe spray structure for synchronously providing cleaning liquid to the roller surface of the rear cleaning roller and the front cleaning roller is arranged in the top end of the front roller frame and the inside of the beam frame, a double-output shaft motor for driving the rear cleaning roller to rotate is installed on the inner wall of one side of the rear roller frame, a key shaft transmission structure for driving the front cleaning roller to rotate is installed on the output shaft of the end of the double-output shaft motor away from the rear cleaning roller, a motor controller is installed on one side of the top end of the rear roller frame, and the output end of the motor controller is electrically connected with the input end of the double-output shaft motor and the servo electric cylinder.
[0005] Preferably, a hanging platform is welded on the vertical center reference surface of the top end of the beam frame, and a cable-stayed beam is installed on the left and right outer walls of the hanging platform.
[0006] Preferably, a U-shaped bolted platform is installed at both ends of the surface of the beam frame, and the beam frame is connected with the rear roller frame through the two U-shaped bolted platforms.
[0007] Preferably, a guide plate is fixed on the outer wall of one side of the front roller frame away from the front cleaning roller, and one end of the guide plate extends into the inside of the rear roller frame and is slidingly matched with the rear roller frame.
[0008] Preferably, the key shaft transmission structure comprises a main gear shaft rotatably mounted on the outer wall of the rear roller frame on one side through a bearing seat and a short shaft rotatably mounted on the outer wall of the front roller frame on one side through a bearing seat, and an inner spline gear shaft is also rotatably mounted on the outer wall of the rear roller frame on one side of the main gear shaft, the inner spline gear shaft and the main gear shaft are in meshing engagement, and an outer spline shaft is fixed to the end of the short shaft close to the inner spline gear shaft, and the outer spline shaft and the inner spline gear shaft are in sliding engagement.
[0009] Preferably, the far ends of the main gear shaft and the short shaft are respectively provided with bevel gear reversing transmission structure two and bevel gear reversing transmission structure one, the main gear shaft is connected with the output shaft of the double-output shaft motor through the bevel gear reversing transmission structure two, and the short shaft is connected with one end of the front cleaning roller through the bevel gear reversing transmission structure one.
[0010] Preferably, the parallel pipe spray structure comprises a right-angle beam plate fixed to the top end of the front roller frame in the length direction, a front shunt pipe mounted on the top end of the right-angle beam plate, and a rear shunt pipe mounted at a rear position inside the beam frame, the axis directions of the front shunt pipe and the rear shunt pipe are parallel to the axis directions of the front cleaning roller and the rear cleaning roller, and the bottom ends of the front shunt pipe and the rear shunt pipe are both provided with a plurality of spray heads in the axis direction.
[0011] Preferably, the ends of the front shunt pipe and the rear shunt pipe away from the key shaft transmission structure are both provided with shunt control valves, an F-shaped pipe joint is mounted between the two shunt control valves, and a main control valve is mounted at the liquid inlet of the F-shaped pipe joint.
[0012] Preferably, the elastic wiping roller structure is composed of an inner hollow shaft sleeve, an outer shaft sleeve, an L-shaped tooth arm, and a tension spring, the inner hollow shaft sleeve is fixedly bolted on the outer wall of the front roller frame on one side, and the inner hollow shaft sleeve and the front cleaning roller are coaxial, the outer shaft sleeve is sleeved on the circumferential outer wall of the inner hollow shaft sleeve, the lower end of the L-shaped tooth arm is fixedly connected with the top end of the outer shaft sleeve, one end of the tension spring is hooked to the outer wall of one side of the L-shaped tooth arm, and the other end of the tension spring is hooked to the outer wall of one side of the guide plate.
[0013] Preferably, the outer shaft sleeve, the inner hollow shaft sleeve, and the L-shaped tooth arm are all made of hard plastic material.
[0014] Compared with the prior art, the automatic photovoltaic panel cleaning device has the advantages that: the device is driven by the walking mechanism of the photovoltaic panel cleaner to move on the photovoltaic panel, the interval between the front roller frame and the rear roller frame is adjusted by the servo electric cylinder according to the dirt condition on the photovoltaic panel, enough wetting space is left between the front and rear cleaning rollers, the front and rear cleaning rollers are rotated by the double-shaft motor and the key shaft transmission structure, and the water is sprayed on the front and rear cleaning rollers by the parallel pipe spray structure, so that the photovoltaic panel is cleaned, and the elastic roller structure assists the cleaning roller to complete self-cleaning during cleaning, so that an efficient, flexible and durable photovoltaic panel closed-loop cleaning process is formed through the adjustable roller interval, stable power transmission, effective water spraying and wetting and elastic roller self-cleaning function. The front and rear roller frames and the servo electric cylinder therebetween are provided, so that the user can dynamically change the interval between the front and rear cleaning rollers according to the actual type and severity of the dirt on the photovoltaic panel, the interval is expanded to create a wetting transition space when facing thick and viscous dirt, so that the water flow supplied by the parallel pipe spray structure has enough time to soften and dissolve stubborn stains, and then the rear cleaning roller performs secondary cleaning, which avoids the wear of the brush or the scratch of the panel surface caused by forced brushing on dry dirt, and the interval can be reduced to improve the cleaning efficiency for general dust; the parallel pipe spray structure directly sprays water on the front and rear cleaning rollers, which not only wets the surface of the photovoltaic panel, but also washes the cleaning roller itself in real time, thereby reducing the possibility of dirt accumulation and hardening in the gap between the bristles, and the elastic roller structure physically scrapes and peels off stubborn residues that cannot be washed away by water through friction contact with the surface of the rotating front and rear cleaning rollers, thereby complementing the water flow washing and further improving the self-cleaning efficiency; finally, the double-shaft motor cooperates with the key shaft transmission structure to drive the front and rear cleaning rollers to rotate together, which ensures the stability and synchronization of power transmission on the basis of adjustable interval. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 is a schematic view of the side structure of the present application Figure One ; Figure 2 is a schematic view of the side structure of the present application Figure 3 is a schematic view of the side structure of the present application Figure Two ; Figure 4 is a schematic view of the side structure of the present application Figure Three ; Figure 5 is a schematic view of the side structure of the present application Figure 1 ; Figure 6 It is the key shaft transmission structure of the application schematic diagram of three-dimensional structure; Figure 7 It is the beam frame of the application schematic diagram of three-dimensional structure; Figure 8 It is the parallel pipe spray structure structure schematic diagram of the application.
[0016] In the figure: 1, the rear roller frame; 2, the beam frame; 201, the hanging platform; 3, the U-shaped bolted platform; 4, the rear cleaning roller; 5, the front roller frame; 501, the guide plate; 6, the front cleaning roller; 7, the elastic rubbing roller structure; 701, the inner hollow shaft sleeve; 702, the outer shaft sleeve; 703, the L-shaped tooth arm; 704, the tension spring; 8, the parallel pipe spray structure; 801, the right-angle beam plate; 802, the front shunt pipe; 803, the rear shunt pipe; 804, the spray head; 805, the F-shaped pipe; 806, the shunt control valve; 807, the main control valve; 9, the servo electric cylinder; 10, the key shaft transmission structure; 1001, the short shaft; 1002, the bevel gear reversing transmission structure one; 1003, the main gear shaft; 1004, the inner spline gear shaft; 1005, the outer spline shaft; 1006, the bevel gear reversing transmission structure two; 11, the double-output shaft motor; 12, the motor controller. DETAILED DESCRIPTION
[0017] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the application.
[0018] Embodiment one, by Figures 1 to 4 It is given that the rear roller frame 1, the beam frame 2 arranged above the rear roller frame 1 and connected with the front end of the photovoltaic panel cleaning robot, and the front roller frame 5 slidingly installed on the outer wall of the rear roller frame 1 along the width direction, the rear cleaning roller 4 and the front cleaning roller 6 are respectively rotatably installed in the rear roller frame 1 and the front roller frame 5 through bearings, the servo electric cylinder 9 is installed on the outer wall of the side of the rear roller frame 1 close to the front roller frame 5, the piston rod top end of the servo electric cylinder 9 is fixedly connected with the outer wall of the side of the front roller frame 5 and adjusts the distance between the rear cleaning roller 4 and the front cleaning roller 6, through the precise control of the servo electric cylinder 9, the wet transition space between the rear cleaning roller 4 and the front cleaning roller 6 can be reasonably maintained, so as to avoid the insufficient wetting caused by the too small distance between the cleaning rollers, and prevent the influence of the cleaning strength caused by the too large distance between the cleaning rollers; The same side outer wall of the rear roller frame 1 and the front roller frame 5 is provided with an elastic wiping roller structure 7, the two elastic wiping roller structures 7 are in contact with the roller surface of the rear cleaning roller 4 and the front cleaning roller 6 respectively, a parallel pipe spraying structure 8 for synchronously providing cleaning liquid to the roller surface of the rear cleaning roller 4 and the front cleaning roller 6 is arranged at the top end of the front roller frame 5 and the inside of the beam frame 2, a double-output-shaft motor 11 for driving the rear cleaning roller 4 to rotate is arranged on the side inner wall of the rear roller frame 1, a key shaft transmission structure 10 for driving the front cleaning roller 6 to rotate is arranged on the output shaft of the double-output-shaft motor 11 away from the rear cleaning roller 4, a motor controller 12 is arranged on one side of the top end of the rear roller frame 1, and the output end of the motor controller 12 is electrically connected with the input end of the double-output-shaft motor 11 and the servo electric cylinder 9. A hanging platform 201 is welded on the vertical center reference surface of the top end of the beam frame 2, inclined cable beams are arranged on the left and right outer walls of the hanging platform 201, the lower ends of the inclined cable beams are welded with the top end of the beam frame 2, U-shaped bolted tables 3 are arranged at the two ends of the surface of the beam frame 2, the beam frame 2 is connected with the rear roller frame 1 through the two U-shaped bolted tables 3, and a guide plate 501 is fixed on the outer wall of the side of the front roller frame 5 away from the front cleaning roller 6, one end of the guide plate 501 extends to the inside of the rear roller frame 1 and is in sliding fit with the rear roller frame 1. In order to ensure that the double-output-shaft motor 11 and the servo electric cylinder 9 in the device can work stably, a power supply module can be arranged at the top end of the rear roller frame 1, the input end of the double-output-shaft motor 11 and the servo electric cylinder 9 is electrically connected with the output end of the power supply module, which belongs to the common knowledge in the field, the working principle is a known technology, and the model can be selected according to actual use, so it will not be explained in detail.
[0019] In the embodiment one, on the basis of Figure 6 The key shaft transmission structure 10 comprises a main gear shaft 1003 rotatably arranged on the side outer wall of the rear roller frame 1 through a bearing seat and a short shaft 1001 rotatably arranged on the side outer wall of the front roller frame 5 through a bearing seat, an inner spline shaft 1004 is also rotatably arranged on the side outer wall of the rear roller frame 1 on one side of the main gear shaft 1003, the inner spline shaft 1004 and the main gear shaft 1003 are in meshing, and an outer spline shaft 1005 is fixed on one end of the short shaft 1001 close to the inner spline shaft 1004, and the outer spline shaft 1005 and the inner spline shaft 1004 are in sliding fit. The cone gear reversing transmission structure two 1006 and the cone gear reversing transmission structure one 1002 are respectively installed on the distal ends of the main gear shaft 1003 and the short shaft 1001, the main gear shaft 1003 is connected with the output shaft of the double-output shaft motor 11 through the cone gear reversing transmission structure two 1006, the short shaft 1001 is connected with one end of the front cleaning roller 6 through the cone gear reversing transmission structure one 1002, the double-output shaft motor 11 is controlled to work through the motor controller 12, the rear cleaning roller 4 is directly driven to rotate by the double-output shaft motor 11, at this time, the rear cleaning roller 4 drives the inner spline shaft 1004 to rotate through the cone gear reversing transmission structure two 1006 and the main gear shaft 1003, and then the inner spline shaft 1004 transmits the rotary power to the front cleaning roller 6 through the outer spline shaft 1005, the short shaft 1001 and the cone gear reversing transmission structure one 1002, so that the rear cleaning roller 4 and the front cleaning roller 6 rotate at the same time and scrub the contact surface of the photovoltaic panel, at this time, the front cleaning roller 6 sweeps the large soil, dust and other impurities on the surface of the photovoltaic panel, and the rear cleaning roller 4 performs secondary wiping on the small stains which cannot be completely removed by the front cleaning roller 6; When the servo electric cylinder 9 drives the front roller frame 5 and the front cleaning roller 6 to approach or move away, the outer spline shaft 1005 also relatively slips in the inner spline shaft 1004, at this time, the inner spline shaft 1004 can still transmit power to the front cleaning roller 6 through the outer spline shaft 1005, the short shaft 1001 and the cone gear reversing transmission structure one 1002, so as to ensure the stability of the equipment operation.
[0020] Example three, on the basis of example two, Figure 7 and Figure 8 are given, the parallel pipe spray structure 8 includes a straight beam plate 801 fixed at the top end of the front roller frame 5 in the length direction, a front shunt pipe 802 installed at the top end of the straight beam plate 801, and a rear shunt pipe 803 installed at the rear position inside the beam frame 2, the axis directions of the front shunt pipe 802 and the rear shunt pipe 803 are parallel to the axis directions of the front cleaning roller 6 and the rear cleaning roller 4, and a plurality of spray heads 804 are installed at the bottom ends of the front shunt pipe 802 and the rear shunt pipe 803 along the axis directions; The front shunt pipe 802 and the rear shunt pipe 803 are provided with shunt control valves 806 at one end away from the key shaft transmission structure 10, an F-shaped pipe 805 is arranged between the two shunt control valves 806, a main control valve 807 is arranged at the liquid inlet of the F-shaped pipe 805, the water inlet of the main control valve 807 is connected to an external water supply end through a clamp and a hose, and a soft tube is used for the middle section of the F-shaped pipe 805 and a certain length is reserved, or a corrugated tube is used for the middle section of the F-shaped pipe 805. When the main control valve 807 and the shunt control valve 806 are in the normally open state, the clean water enters the front shunt pipe 802 and the rear shunt pipe 803 through the F-shaped pipe 805, at this time, the front cleaning roller 6 is washed by the spray head 804, and the rear cleaning roller 4 is also washed by the spray head 804. The continuous flushing of the water flow carries away the sewage and particles generated during cleaning, reducing the secondary deposition of stains on the roller surface and the photovoltaic panel.
[0021] In example four, on the basis of example three, Figure 5 It is given that the elastic wiping roller structure 7 is composed of an inner hollow shaft sleeve 701, an outer shaft sleeve 702, an L-shaped tooth arm 703 and a tension spring 704. The inner hollow shaft sleeve 701 is fixedly connected to the outer wall of the front roller frame 5, and the inner hollow shaft sleeve 701 and the front cleaning roller 6 are coaxial. The outer shaft sleeve 702 is sleeved on the outer wall of the inner hollow shaft sleeve 701. The lower end of the L-shaped tooth arm 703 is fixedly connected to the top end of the outer shaft sleeve 702. One end of the tension spring 704 is hooked to the outer wall of the L-shaped tooth arm 703, and the other end of the tension spring 704 is hooked to the outer wall of the guide plate 501. The existence of the tension of the tension spring 704 will make the top wall of the L-shaped tooth arm 703 always contact with the outer roller surface of the cleaning roller. In this process, the L-shaped tooth arm 703 drives the outer shaft sleeve 702 to deflect around the central axis of the inner hollow shaft sleeve 701. At this time, the L-shaped tooth arm 703 produces effective friction and scraping effect with the roller surface of the cleaning roller, like a continuously working comb, which physically peels off the stubborn adhering objects from the roller surface, making up for the deficiency of pure water flushing, so that the cleaning roller always enters the cleaning work of the photovoltaic panel surface in a relatively clean state. The outer shaft sleeve 702, the inner hollow shaft sleeve 701 and the L-shaped tooth arm 703 are all made of hard plastic material, which has sufficient structural strength and light weight, and can ensure that the tension of the tension spring 704 is transmitted to the L-shaped tooth arm 703.
[0022] In use, the embodiment of the present application is first installed on the front end of the photovoltaic panel cleaning robot, ensuring that the beam frame 2 is stably connected to the front end of the shell of the photovoltaic panel cleaning robot, and the beam frame 2 serves as the support structure of the entire cleaning device, carrying the front roller frame 5, the front cleaning roller 6, and the related transmission and parallel pipe spray structure 8, ensuring the stability of the device when moving on the surface of the photovoltaic panel. Then, the staff starts the device according to the dirt condition of the surface of the photovoltaic panel, preparing for the cleaning operation. The interval between the front roller frame 5 and the rear roller frame 1 is adjusted by the servo electric cylinder 9, leaving a proper wet transition space between the front cleaning roller 6 and the rear cleaning roller 4. After adjustment, the speed of the double-output shaft motor 11 is adjusted by the motor controller 12, driving the rotation of the front cleaning roller 6 and the rear cleaning roller 4. At this time, the double-output shaft motor 11 uniformly transmits power to the front cleaning roller 6 and the rear cleaning roller 4 through the key shaft transmission structure 10, ensuring that they rotate at a proper speed to achieve the purpose of removing stains on the surface of the photovoltaic panel. At the same time, the liquid inlet of the parallel pipe spray structure 8 is connected to the external water supply end through a hose, which sprays clean water onto the rear cleaning roller 4 and the front cleaning roller 6, helping to remove dirt attached to the photovoltaic panel and reducing secondary pollution of the roller surface and the surface of the photovoltaic panel. With the rotation of the cleaning roller and the water spraying operation of the parallel pipe spray structure 8, the elastic wiping roller structure 7 is tightly attached to the surface of the cleaning roller, wiping off the dirt attached to the cleaning roller and ensuring that the cleaning roller always maintains a good cleaning state. During the entire cleaning process, the staff adjusts the speed of the double-output shaft motor 11, the spraying water volume of the parallel pipe spray structure 8, and the interval between the roller frames according to the running state of the device and needs, until the cleaning is completed, the rotation of the double-output shaft motor 11 is stopped, and the parallel pipe spray structure 8 is turned off. Finally, the device is simply checked and maintained.
[0023] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.
[0024] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements, and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. An automatic photovoltaic panel cleaning device, comprising a rear roller frame (1), a beam frame (2) arranged above the rear roller frame (1) and connected with the front end of a photovoltaic panel cleaning robot, and a front roller frame (5) slidingly installed on the outer wall of one side of the rear roller frame (1) in the width direction, the inner part of the rear roller frame (1) and the front roller frame (5) are respectively rotatably installed with a rear cleaning roller (4) and a front cleaning roller (6) through bearings, characterized in that, The rear roller frame (1) is provided with a servo electric cylinder (9) on the side outer wall close to the front roller frame (5), the piston rod top end of the servo electric cylinder (9) is fixedly connected with the side outer wall of the front roller frame (5) and adjusts the interval between the rear cleaning roller (4) and the front cleaning roller (6), the same side outer wall of the rear roller frame (1) and the front roller frame (5) is provided with an elastic wiping roller structure (7), the two elastic wiping roller structures (7) are respectively in contact with the roller surface of the rear cleaning roller (4) and the front cleaning roller (6), the top end of the front roller frame (5) and the inside of the beam frame (2) are provided with a parallel pipe spraying structure (8) for synchronously providing cleaning liquid to the roller surface of the rear cleaning roller (4) and the front cleaning roller (6), the side inner wall of the rear roller frame (1) is provided with a double-output-shaft motor (11) for driving the rear cleaning roller (4) to rotate, the end output shaft of the double-output-shaft motor (11) away from the rear cleaning roller (4) is provided with a key shaft transmission structure (10) for driving the front cleaning roller (6) to rotate, the side of the top end of the rear roller frame (1) is provided with a motor controller (12), and the output end of the motor controller (12) is electrically connected with the input end of the double-output-shaft motor (11) and the servo electric cylinder (9).
2. An automated photovoltaic panel cleaning apparatus according to claim 1, wherein: The vertical center reference surface of the top end of the beam frame (2) is welded with a hanging platform (201), and the left and right outer walls of the hanging platform (201) are provided with cable-stayed beams, and the lower ends of the cable-stayed beams are welded with the top end of the beam frame (2).
3. An automated photovoltaic panel cleaning apparatus according to claim 2, wherein: The surface of the beam frame (2) is provided with U-shaped bolted tables (3) at both ends, and the beam frame (2) is connected with the rear roller frame (1) through the two U-shaped bolted tables (3).
4. An automated photovoltaic panel cleaning apparatus as claimed in claim 1, wherein: The side outer wall of the front roller frame (5) away from the front cleaning roller (6) is fixedly provided with a guide plate (501), and one end of the guide plate (501) extends into the inside of the rear roller frame (1) and is in sliding fit with the rear roller frame (1).
5. An automated photovoltaic panel cleaning apparatus as claimed in claim 1, wherein: The key shaft transmission structure (10) comprises a main gear shaft (1003) rotatably installed on the side outer wall of the rear roller frame (1) through a bearing seat and a short shaft (1001) rotatably installed on the side outer wall of the front roller frame (5) through a bearing seat, the side outer wall of the rear roller frame (1) is further rotatably provided with an inner spline gear shaft (1004) on the side of the main gear shaft (1003), the inner spline gear shaft (1004) and the main gear shaft (1003) are in meshing, and the end close to the inner spline gear shaft (1004) of the short shaft (1001) is fixedly provided with an outer spline shaft (1005), and the outer spline shaft (1005) and the inner spline gear shaft (1004) are in sliding fit.
6. An automated photovoltaic panel cleaning apparatus as claimed in claim 5, wherein: The faraway ends of the main gear shaft (1003) and the short shaft (1001) are respectively provided with a bevel gear reversing transmission structure two (1006) and a bevel gear reversing transmission structure one (1002), the main gear shaft (1003) is connected with the output shaft of the double-output-shaft motor (11) through the bevel gear reversing transmission structure two (1006), and the short shaft (1001) is connected with one end of the front cleaning roller (6) through the bevel gear reversing transmission structure one (1002).
7. An automated photovoltaic panel cleaning apparatus as claimed in claim 1, wherein: The parallel pipe spray structure (8) comprises a right-angle beam plate (801) at the top end of the front roller frame (5) in the length direction, a front shunt pipe (802) installed at the top end of the right-angle beam plate (801), and a rear shunt pipe (803) installed at the rear position inside the beam frame (2), the axis directions of the front shunt pipe (802) and the rear shunt pipe (803) are parallel to the axis directions of the front cleaning roller (6) and the rear cleaning roller (4), and the bottom ends of the front shunt pipe (802) and the rear shunt pipe (803) are both provided with a plurality of spray heads (804) along the axis direction.
8. An automated photovoltaic panel cleaning apparatus according to claim 7, wherein: The front shunt pipe (802) and the rear shunt pipe (803) are both provided with a shunt control valve (806) at the end away from the key shaft transmission structure (10), an F-shaped pipe joint (805) is installed between the two shunt control valves (806), and a main control valve (807) is installed at the liquid inlet of the F-shaped pipe joint (805).
9. An automated photovoltaic panel cleaning apparatus as claimed in claim 4, wherein: The elastic wiping roller structure (7) is composed of an inner hollow shaft sleeve (701), an outer shaft sleeve (702), an L-shaped tooth arm (703), and a tension spring (704), the inner hollow shaft sleeve (701) is fixedly connected to the outer wall of one side of the front roller frame (5), and the inner hollow shaft sleeve (701) and the front cleaning roller (6) are coaxial, the outer shaft sleeve (702) is sleeved on the circumferential outer wall of the inner hollow shaft sleeve (701), the lower end of the L-shaped tooth arm (703) is fixedly connected to the top end of the outer shaft sleeve (702), one end of the tension spring (704) is hooked to the outer wall of one side of the L-shaped tooth arm (703), and the other end of the tension spring (704) is hooked to the outer wall of one side of the guide plate (501).
10. An automated photovoltaic panel cleaning apparatus according to claim 9, wherein: The outer shaft sleeve (702), the inner hollow shaft sleeve (701), and the L-shaped tooth arm (703) are all made of hard plastic material.