Photovoltaic panel cleaning system

Abstract

The invention provides a photovoltaic panel cleaning system, which comprises two frames respectively mounted at two ends of a photovoltaic panel array in the extension direction; the wire wheel assembly is mounted on a frame; the wire wheel assembly comprises two wire wheels which are coaxially arranged and can rotate freely, and the two wire wheels are used for take-up and pay-off correspondingly. The wire wheel assembly comprises a rotating motor used for driving a wire wheel to rotate. The pulley blocks are mounted at the ends of the two frames respectively, and each pulley block comprises at least one fixed pulley; the two ends of the cable rope are tightly wound to the two wire wheels respectively, and the middle of the cable rope is wound around the fixed pulleys of the multiple pulley blocks in sequence; and the cleaning device is placed on the top of the photovoltaic panel array. The device has the advantages that the upper end and the lower end of the cleaning device can be kept synchronous in the translation process, and displacement difference cannot be generated, so that the clamping phenomenon cannot occur in the translation process of the cleaning device, and the operation stability of a whole mechanical system is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic panel cleaning, and particularly to a photovoltaic panel cleaning system. Background Art

[0002] Photovoltaic panels utilize the photovoltaic effect of semiconductor materials under illumination conditions to directly convert solar energy into electrical energy. To ensure the power generation efficiency, the photovoltaic panels need to be inclined at a certain angle relative to the horizontal plane. Since the photovoltaic panels are installed outdoors, dust or other attachments are likely to accumulate on the surface of the panels, resulting in a reduction in the power generation efficiency of the photovoltaic panels.

[0003] Multiple photovoltaic panels are closely connected to each other to form a photovoltaic panel array, which can be used in photovoltaic power stations of various scales. The surface of the photovoltaic panel array needs to be cleaned regularly. Using an automated cleaning device to regularly clean the photovoltaic panels can reduce the manual cleaning cost and improve the cleaning efficiency.

[0004] Chinese Invention Publication No. CN118944581A discloses a photovoltaic panel cleaning system, which uses a dual-drive motor, a dual-wire pulley group, and dual cables to respectively pull the upper and lower ends of the cleaning device, so as to drive the cleaning device to travel from one end of the photovoltaic panel array to the other end, and effectively clean the top surface of the photovoltaic panel array during the travel. In this solution, since the two drive motors need to be controlled separately, it is difficult to ensure the synchronism of the movement of the two cables. There may be a very short time difference when the two motors rotate, and there will inevitably be a small displacement difference when the upper and lower ends of the cleaning device are translated. On the other hand, the frictional resistance between the upper sidewall and the lower sidewall of the photovoltaic panel and the limiting wheels of the cleaning device is different. Even if the driving forces of the two motors are exactly the same, it is difficult to ensure that the translation speeds of the upper and lower ends of the cleaning device are exactly the same, resulting in a displacement difference when the upper and lower ends of the cleaning device are translated. When the above displacement difference reaches a certain threshold, it will cause the cleaning device to be stuck at the connection with the upper and lower ends of the photovoltaic panel array, resulting in the interruption of the normal cleaning work. In addition, in this solution, there are two drive motors, wire pulley groups, and cables, and the hardware cost is relatively high, resulting in a lack of competitiveness of the product in the market. Summary of the Invention

[0005] The present invention provides a photovoltaic panel cleaning system to solve the technical problems of poor synchronism between the upper and lower ends, easy jamming, and excessive cost existing in the prior art.

[0006] To solve the above technical problems, the present invention discloses the following technical solutions: The present invention provides a photovoltaic panel cleaning system, comprising: two frames respectively installed at two ends of the photovoltaic panel array in the extending direction; a wire reel assembly installed on one frame; the wire reel assembly includes two freely rotatable wire reels arranged coaxially, respectively for winding and unwinding the wire; the wire reel assembly includes a rotating motor for driving one wire reel to rotate; a plurality of pulley groups respectively installed at the ends of the two frames, each pulley group includes at least one fixed pulley; a tightened cable, the two ends of the cable are respectively tightly wound around the two wire reels, and the middle part of the cable successively bypasses the fixed pulleys of the plurality of pulley groups; and a cleaning device placed on the top of the photovoltaic panel array, the upper and lower ends of the cleaning device are respectively connected to the cable through a connecting member; the two connecting members can be synchronously translated after being pulled by the cable; when the rotating motor is started, one wire reel is driven to rotate for winding the wire, the tightened cable drives the other wire reel to rotate and unwind the wire synchronously, and the two ends of the cleaning device are synchronously pulled by the tightened cable and translated horizontally on the top of the photovoltaic panel array.

[0007] Further, the wire reel assembly includes: two relatively arranged flat plates, the bottom of which is fixed to one frame; at least one sliding rod, the two ends of which are respectively vertically connected to the two flat plates; the extending direction of the sliding rod is consistent with the extending direction of the photovoltaic panel array; a slider slidably installed on at least one sliding rod; the rotating motor is installed on the slider; and a stepping motor fixed to one flat plate; the stepping motor includes a telescopic rod, and the front end of the telescopic rod is connected to the slider.

[0008] Further, the wire reel assembly includes: two relatively arranged flat plates, the bottom of which is fixed to one frame; a wire reel shaft, the two ends of which are respectively vertically connected to the middle parts of the two flat plates; each wire reel is rotatably installed on a wire reel shaft through a bearing, and there is a wire reel gap between the two wire reels; a worm gear is arranged on the surface of one wire reel facing the other wire reel; and a worm is arranged at the front end of the power output shaft of the rotating motor, the worm is inserted into the wire reel gap and meshes with one worm gear.

[0009] Further, the wire reel assembly includes: two relatively arranged flat plates, the bottom of which is fixed to one frame; a connecting plate, the two ends of which are respectively vertically connected to one end of the two flat plates and are arranged opposite to the two wire reels; two sets of wire arranging assemblies, each set of wire arranging assemblies is installed on the connecting plate; and two sets of transmission assemblies, each set of wire arranging assemblies is connected to one wire reel through a set of transmission assemblies.

[0010] Further, each set of wire arranging components includes: a bracket fixed to the surface of the connecting plate facing the wire wheel side; each bracket includes two oppositely arranged bracket plates; a bidirectional lead screw, both ends of which are vertically connected to the two bracket plates respectively; a guide rod, both ends of which are connected to the two bracket plates respectively; the central axis of the guide rod is parallel to the central axis of the bidirectional lead screw; and a wire arranging slider, one end of which is sleeved on the surfaces of the bidirectional lead screw and the guide rod and is threadedly connected to the bidirectional lead screw, and the other end of which is provided with two juxtaposed guide pulleys, the guide pulleys are arranged opposite to a wire wheel, and the extending direction of the central axis of the guide pulley is the same as the extending direction of the guide rod.

[0011] Further, each set of transmission components includes: a rotating shaft connected to a flat plate through a bearing and extending towards the other flat plate; a first gear fixed to the side surface of a wire wheel and coaxially arranged with the wire wheel; a second gear fixed to the rotating shaft; a first annular transmission belt wrapped around the side surfaces of the first gear and the second gear and meshing with the first gear and the second gear; a third gear fixed to the rotating shaft and coaxially arranged with the second gear; a fourth gear fixed to a bidirectional lead screw; and a second annular transmission belt wrapped around the side surfaces of the third gear and the fourth gear and meshing with the third gear and the fourth gear.

[0012] Further, the wire wheel assembly further includes two damping components, each damping component is connected to a wire wheel for providing damping to the wire wheel.

[0013] Further, the damping component includes: a fifth gear fixed to the side surface of a wire wheel and coaxially arranged with the wire wheel; a resistance damper installed on a flat plate, the resistance damper includes a damping output shaft; and a damping gear fixed to the front end of the damping output shaft and meshing with the fifth gear.

[0014] Further, the damping component includes: a damping plate fixed to the side surface of a wire wheel and coaxially arranged with the wire wheel; a base installed on a flat plate, the base is provided with a through hole; a piston rod slidably inserted into the through hole of the base; a brake pad detachably installed at the front end of the piston rod; and an elastic member, one end of which is connected to the base and the other end of which is connected to the front end of the piston rod for pressing the brake pad against the damping plate.

[0015] Further, the photovoltaic panel array and the two frames at its two ends form a rectangular plate-like structure; four pulley groups are provided at the four corners of the rectangular plate-like structure; the first pulley group is provided with a first pulley and a second pulley; the distance between the first pulley and the wire wheel is less than the distance between the second pulley and the wire wheel; the second pulley group is provided with a third pulley and a fourth pulley; the distance between the third pulley and the wire wheel is less than the distance between the fourth pulley and the wire wheel; the third pulley group is provided with a fifth pulley and a sixth pulley; the distance between the fifth pulley and the wire wheel is less than the distance between the sixth pulley and the wire wheel; the fourth pulley group is provided with a seventh pulley; the cable rope sequentially bypasses the first pulley, the third pulley, the sixth pulley, the seventh pulley, the fifth pulley, the fourth pulley and the second pulley.

[0016] Further, the cleaning device includes: a long strip-shaped vehicle body extending from the upper end to the lower end of the photovoltaic panel array and capable of traveling back and forth on the top surface of the photovoltaic panel array; a moving device installed at the upper and lower ends of the vehicle body; and a strip-shaped brush installed on the left and right sides of the vehicle body, and the bristles of the strip-shaped brush extend to the top surface of the photovoltaic panel array.

[0017] Further, the moving device includes: an L-shaped long strip plate fixed to the vehicle body, and the L-shaped long strip plate includes a first plate and a second plate perpendicular to each other; at least one wheel rotatably installed on the first plate and capable of rolling on the top surface of the photovoltaic panel array; and at least one limiting wheel rotatably installed on the second plate and capable of rolling on the side wall at the upper end or the lower end of the photovoltaic panel array.

[0018] Compared with the prior art, the advantages of the present invention are as follows: The present invention provides a photovoltaic panel cleaning system. A wire wheel assembly and a rotating motor are arranged at one end of the photovoltaic panel array, and a translatable cleaning device is placed on the photovoltaic panel array. A cable rope bypassing multiple pulley groups is respectively connected to the upper and lower ends of the cleaning device, so that the upper and lower ends of the cleaning device can be translated synchronously. The upper and lower ends of the cleaning device are connected to the same cable rope, which can ensure that the upper and lower ends of the cleaning device remain synchronous during the translation process and will not generate any displacement difference, thereby ensuring that the cleaning device will not be jammed during translation and ensuring the stability of the operation of the entire mechanical system.

[0019] In the present invention, only one rotating motor, one wire wheel group and one cable rope are required. Compared with the prior art, the upper and lower ends of the cleaning device are connected to the same cable rope, which can ensure their synchronism, effectively reduce the hardware cost, and is simple and convenient for installation and maintenance. Description of the Drawings

[0020] The technical solutions of the present invention will be described in detail below in conjunction with the drawings and specific embodiments.

[0021] Figure 1 Schematic diagram of the overall structure of the photovoltaic panel cleaning system according to an embodiment of the present invention; Figure 2 Schematic diagram of the structure at one end of the photovoltaic panel array according to an embodiment of the present invention; Figure 3 Schematic diagram of the winding structure of the cable on the pulley block in an embodiment of the present invention; Figure 4 Another schematic diagram of the winding structure of the cable on the pulley block in an embodiment of the present invention; Figure 5 Schematic diagram of the structure of the cleaning device according to an embodiment of the present invention; Figure 6 Schematic diagram of the overall structure of the wire wheel assembly according to an embodiment of the present invention; Figure 7 Partial structure schematic diagram of the wire wheel assembly at an angle according to an embodiment of the present invention; Figure 8 Top view of the wire wheel assembly according to an embodiment of the present invention; Figure 9 Partial structure schematic diagram of the wire wheel assembly at another angle according to an embodiment of the present invention; Figure 10 Schematic diagram of the structure of another damping component in other embodiments of the present invention; Figure 11 For Figure 10 Exploded structure schematic diagram of the damping component in

[0022] Component identifications in the figure are as follows: 100 Photovoltaic panel array, 200 Frame, 210 Long rod, 220 Short rod, 230 Frame through hole, 300 Wire wheel assembly, 310 Bracket, 311 Flat plate, 312 Connecting plate, 313 Slide rod, 314 Wire wheel shaft, 315 Wire wheel gap; 320 Wire wheel, 330 Rotating motor, 331 Power output shaft, 340 Slide block, 350 Stepping motor, 351 Telescopic rod, 361 Worm gear, 362 Worm; 370 Cable arranging assembly, 371 Cable arranging bracket, 371a Bracket plate, 371b Bracket plate, 372 Bidirectional lead screw, 373 Guide rod, 374 Cable arranging slide block, 375 Guide pulley; 380 Transmission assembly, 381 Rotating shaft, 382 First gear, 383 Second gear, 384 Third gear, 385 Fourth gear, 386 First annular transmission belt, 387 Second annular transmission belt; 390 damping component, 391 fifth gear, 392 resistor damper, 393 damping gear, 394 damping output shaft, 395 damping plate, 396 base, 397 piston rod, 398 brake pad, 399 elastic member; 400 pulley block, 401 first pulley, 402 second pulley, 403 third pulley, 404 fourth pulley, 405 fifth pulley, 406 sixth pulley 406, 407 seventh pulley, 500 cable; 600 cleaning device, 610 vehicle body, 620 moving device, 621 L-shaped long plate, 621a first plate, 621b second plate, 622 wheel, 623 limiting wheel, 630 strip brush. Detailed implementation manners

[0023] 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 skilled in the art without creative efforts fall within the protection scope of the present invention.

[0024] In the drawings, components with the same structure are denoted by the same numerals, and components with similar structures or functions everywhere are denoted by similar numerals. The directional terms mentioned in the present invention, for example, up, down, front, rear, left, right, inside, outside, upper surface, lower surface, side surface, top surface, bottom surface, front end, rear end, end, etc., are only the directions in the drawings, which are only used to explain and illustrate the present invention, rather than to limit the protection scope of the present invention.

[0025] In the drawings, components with the same structure are denoted by the same numerals. When some components are described as "on" another component, the component can be directly placed on the other component; there can also be an intermediate component, the component is placed on the intermediate component, and the intermediate component is placed on another component. When a component is described as "mounted to" or "connected to" another component, the two can be understood as directly "mounted" or "connected", or a component is indirectly "mounted to" or "connected to" another component through an intermediate component.

[0026] As Figures 1 - 4 shown, the present invention provides a photovoltaic panel cleaning system for cleaning a photovoltaic panel array 100. The photovoltaic panel cleaning system includes two frames 200, a wire wheel assembly 300, a plurality of pulley blocks 400, a tensioned cable 500 and a cleaning device 600.

[0027] Two frames 200 are respectively installed at both ends in the extending direction of the photovoltaic panel array 100. The frame 200 is a rectangular frame, including a plurality of long rods 210 and a plurality of short rods 220 that are perpendicularly connected to each other. The plurality of long rods 210 and the plurality of short rods 220 enclose a plurality of frame through-holes 230. The wire reel assembly 300 is installed on one frame 200; a plurality of pulley groups 400 are respectively installed at the ends of the two frames. Each pulley group 400 includes one or more fixed pulleys, and a cable can be installed at the gap between two adjacent fixed pulleys.

[0028] In this embodiment, the photovoltaic panel array 100 and the two frames 200 at both ends thereof form a rectangular plate-like structure; four pulley groups 400 are provided at the four corners of the rectangular plate-like structure. Each pulley group 400 includes a triangular pulley bracket, and the pulley is installed on the triangular hypotenuse of the pulley bracket. The first pulley group 410 is provided with two first pulleys 401 and two second pulleys 402; the distance between the first pulley 401 and the wire reel 320 is less than the distance between the second pulley 402 and the wire reel 320. The second pulley group 420 is provided with a third pulley 403 and a fourth pulley 404; the distance between the third pulley 403 and the wire reel 320 is less than the distance between the fourth pulley 404 and the wire reel 320. The third pulley group 430 is provided with a fifth pulley 405 and a sixth pulley 406; the distance between the fifth pulley 405 and the wire reel 320 is less than the distance between the sixth pulley 406 and the wire reel 320. The fourth pulley group 440 is provided with a seventh pulley 407.

[0029] The wire reel assembly 300 includes two freely rotatable wire reels 320 and a rotation motor 330 that are coaxially arranged. The two wire reels 320 are respectively used for winding and unwinding the wire. Both ends of a taut cable 500 are respectively tightly wound around the two wire reels 320. The winding directions of the cable 500 on the two wire reels 320 are opposite. The middle part of the cable 500 successively bypasses the fixed pulleys of the plurality of pulley groups 400. The cable 500 is preferably a steel wire rope. Specifically, one end of the cable 500 is fixedly connected and wound around a wire reel 320a. The middle part of the cable 500 successively bypasses the first pulley 401, the third pulley 403, the sixth pulley 406, the seventh pulley 407, the fifth pulley 405, the fourth pulley 404 and the second pulley 402. The other end of the cable 500 is fixedly connected and wound around another wire reel 320b. This winding method enables the parts of the cable 500 adjacent to the upper and lower ends of the photovoltaic panel array 100 to be synchronously pulled to the left or right.

[0030] As Figure 2 shown, the cleaning device 600 is placed on the top of the photovoltaic panel array 100. The cleaning device 600 includes a long-shaped vehicle body 610, two moving devices 620 and two strip-shaped brushes 630.

[0031] The elongated vehicle body 610 extends from the upper end to the lower end of the photovoltaic panel array 100 and can travel back and forth on the top surface of the photovoltaic panel array 100; two moving devices 620 are installed at the upper and lower ends of the vehicle body 610; two strip-shaped brushes 630 are installed on the left and right sides of the vehicle body 610, extending from the upper end to the lower end of the photovoltaic panel array 100, and the bristles of each strip-shaped brush 630 extend to the top surface of the photovoltaic panel array 610, and the ends of the bristles are bent on the top surface of the photovoltaic panel array 610.

[0032] As Figure 5 shown, the moving device 620 includes an L-shaped long strip plate 621 with an L-shaped cross-section, two wheels 622 and two limit wheels 623. The L-shaped long strip plate 621 is fixed to the vehicle body 610 by fasteners. The L-shaped long strip plate has an L-shaped cross-section and includes a first plate 621a and a second plate 621b that are perpendicular to each other. The wheels 622 are rotatably installed on the first plate 621a and can roll on the top surface of the photovoltaic panel array 100. The limit wheels 623 are rotatably installed on the second plate 621b and can roll on the side walls at the upper or lower end of the photovoltaic panel array 100. In other embodiments, the number of wheels and limit wheels can be one or more.

[0033] The upper and lower ends of the cleaning device 600 are respectively fixedly connected to the cable 500 through a connecting member (not shown in the figure); after being pulled by the cable 500, the two connecting members (not shown in the figure) can translate synchronously, so that the vehicle body 610 can move back and forth through the wheels 622. The limit wheels 623 hang the vehicle body 610 at the upper end of the photovoltaic panel array 100 to ensure that the cleaning device 600 does not slip off the photovoltaic panel array 100.

[0034] As Figure 2 、 Figure 6 shown, the wire wheel assembly 300 includes a square box-shaped bracket 310, including two relatively arranged flat plates 311, a connecting plate 312, at least one slide rod 313 and a wire wheel shaft 314. The bottoms of the two flat plates 310 are fixed to a frame 200, the connecting plate 312 is vertically connected to one end of the two flat plates 311; the slide rod 313 is vertically connected to the other end of the two flat plates. The wire wheel shaft 314 is vertically connected to the middle of the two flat plates; the slide rod 313 and the wire wheel shaft 314 are both parallel to the flat plate 311, and the extending directions of the slide rod 313 and the wire wheel shaft 314 are the same as the extending direction of the photovoltaic panel array 100. Each wire wheel 320 is rotatably installed on a wire wheel shaft 314 through a bearing. Two wire wheels 320 with the same size are relatively arranged, there is a wire wheel gap 315 between the two wire wheels 320, and the two wire wheels 320 are arranged opposite to the connecting plate 312.

[0035] As Figure 6 、 Figure 7As shown in the figure, the wire reel assembly 300 further includes a slider 340 and a stepper motor 350. The slider 340 is slidably mounted to one or more slide rods 313; the rotation motor 330 is mounted to the slider 340. The stepper motor 350 is fixed to a flat plate 311, and the stepper motor 350 includes a telescopic rod 351, and the front end of the telescopic rod 351 is connected to the slider 340.

[0036] As Figures 7 - 8 shown in the figure, the wire reel assembly 300 further includes a worm gear 361 and a worm 362. A worm gear 361a is provided on the surface of the wire reel 320a facing the other wire reel 320b; a worm gear 361b is provided on the surface of the wire reel 320b facing the other wire reel 320a. The rotation motor 330 includes a power output shaft 331, and a worm 362 is provided at the front end of the power output shaft 331. The worm 362 is inserted into the wire reel gap 315 and meshes with one of the worm gears 361a or 361b. In this embodiment, it is preferable that the worm 362 is in the shape of a bevel gear and the worm gear 361 is in the shape of a face gear.

[0037] As Figure 8 shown in the figure, during the operation of this embodiment, the stepper motor 350 controls the rotation motor 330 to translate in the horizontal direction, so that the worm 362 at the front end of the power output shaft 331 meshes with the worm gear 361 of one wire reel 320 and is separated from the worm gear 361 of the other wire reel 320.

[0038] When the worm 362 meshes with the worm gear 361a of the wire reel 320a, after the rotation motor 330 is started, one wire reel 320a is driven by the power output shaft 331 to rotate for taking in the wire. The tightened cable drives the other wire reel 320b to rotate in the opposite direction to simultaneously pay out the wire. The upper and lower ends of the cleaning device 600 are synchronously pulled by the tightened cable 500 and translated horizontally along the top of the photovoltaic panel array 100.

[0039] As Figures 7 - 9 shown in the figure, the wire reel assembly 300 further includes two sets of wire arranging assemblies 370 and two sets of transmission assemblies 380. The two sets of wire arranging assemblies are mounted to the connecting plate 312; each set of wire arranging assemblies 370 is connected to one wire reel 320 through a set of transmission assemblies 380.

[0040] Each set of cable arranging components 370 includes a cable arranging bracket 371, a bidirectional lead screw 372, a guide rod 373 and a cable arranging slider 374. Each cable arranging bracket 371 includes two oppositely arranged bracket plates 371a, 371b; and is fixed to the surface of the connecting plate 313 on the side facing the wire wheel 320. The two ends of the bidirectional lead screw 372 are respectively vertically connected to the two bracket plates 371a, 371b. The two ends of the guide rod 373 are respectively connected to the two bracket plates 371a, 371b; the central axis of the guide rod 373 is parallel to the central axis of the bidirectional lead screw. One end of the cable arranging slider 374 is sleeved on the surfaces of the bidirectional lead screw 372 and the guide rod 373 and is threadedly connected to the bidirectional lead screw 372. The other end thereof is provided with two juxtaposed guide pulleys 375. The guide pulleys 375 are arranged opposite to a wire wheel 320. The extending direction of the central axis of the guide pulley 375 is the same as the extending direction of the guide rod 373. One end of the cable 500 passes through the gap between the two guide pulleys 375 of a set of cable arranging components 370a, and then winds around and is connected to the wire wheel 320a; the other end of the cable 500 passes through the gap between the two guide pulleys 375 of another set of cable arranging components 370b, and then winds around and is connected to the wire wheel 320b.

[0041] Each set of transmission components 380 includes a rotating shaft 381, a first gear 382, a second gear 383, a third gear 384, a fourth gear 385, a first annular transmission belt 386 and a second annular transmission belt 387. The rotating shaft 381 is connected to a flat plate 311 through a bearing and extends towards the other flat plate 311. The first gear 382 is fixed to the side surface of a wire reel 320 and is coaxially arranged with the wire reel 320. The second gear 383 is fixed to the rotating shaft 381. The first annular transmission belt 386 is wrapped around the side surfaces of the first gear 382 and the second gear 383 and meshes with the first gear 382 and the second gear 383. The third gear 384 is fixed to the rotating shaft 381 and is coaxially arranged with the second gear 382. The fourth gear 385 is fixed to a bidirectional lead screw 372. The second annular transmission belt 387 is wrapped around the side surfaces of the third gear 383 and the fourth gear 385 and meshes with the third gear 384 and the fourth gear 385. Among them, the gear ratio of the first gear 382 to the second gear 383 is 1 / 5 to 1 / 2; the gear ratio of the second gear 383 to the third gear 384 is 4 to 8; the gear ratio of the third gear 384 to the fourth gear 385 is 1 / 10 to 1 / 4. The transmission components 380 connect the two wire reels 320 to the two bidirectional lead screws 372 respectively. While the wire reels 320 are rotating, the bidirectional lead screws 372 of the wire arranging assembly 370 also rotate. The speed ratio of their rotations is directly proportional to the gear ratio of the transmission components 380. When the wire reels 320 rotate, the bidirectional lead screws 372 rotate simultaneously, causing the wire arranging slider 374 to translate. During the process of the wire reels 320 winding and unwinding the wire, the position where the cable 500 winds and unwinds on the wire reels 320 is always opposite to the gap between the two guiding pulleys 375 of the wire arranging slider 374, thus ensuring the smooth completion of the winding and unwinding process and effectively preventing the cable from loosening and knotting.

[0042] As Figures 8 - 9 shown, the wire reel assembly 300 further includes two damping components 390. Each damping component 390 is connected to a wire reel 320 and is used to provide damping for the wire reel 320, reduce the vibration amplitude of the mechanical system, reduce the noise generated by the vibration, and keep the winding and unwinding process stable.

[0043] In this embodiment, the damping component 390 includes a fifth gear 391, a resistor damper 392 and a damping gear 393. The fifth gear 391 is fixed to the side surface of a wire reel 320 and is coaxially arranged with the wire reel 320. The resistor damper 392 is installed on a flat plate 311. The resistor damper 392 includes a damping output shaft 394. The damping gear 393 is fixed to the front end of the damping output shaft 394 and meshes with the fifth gear 391. The resistor damper 392 is connected to the wire reel 320 through the damping gear 393 and the fifth gear 391 that mesh with each other, thereby providing damping for the wire reel 320 during the rotation process of the wire reel 320.

[0044] As shown Figure 10 In other embodiments, as shown, the damping assembly 390 may further include a damping plate 395, a base 396, a piston rod 397, a brake pad 398, and an elastic member 399. The damping plate 395 is fixed to a side surface of a wire wheel 320 and is coaxially arranged with the wire wheel 320. The base 396 is mounted to a flat plate 311. A through hole (not shown) is provided at the center of the base 396. The piston rod 397 is slidably inserted into the through hole (not shown) of the base 396. The brake pad 398 is detachably mounted to the front end of the piston rod 397. The elastic member 399 is preferably a helical spring. One end of the elastic member 399 is connected to the base 396, and the other end is connected to the front end of the piston rod 397 to press the brake pad 398 against the damping plate 395, thereby providing damping for the wire wheel 320 during the rotation of the wire wheel 320.

[0045] During the operation of this embodiment, the user can control the telescopic rod 351 through the stepper motor 350 to adjust the length, thereby controlling the horizontal translation of the slider 340 and the rotating motor 330, so that the worm 362 at the front end of the power output shaft 331 of the rotating motor 330 meshes with the worm gear 361 of one wire wheel 320 and is separated from the worm gear 361 of the other wire wheel 320.

[0046] As shown Figure 3 When the worm 362 meshes with the worm gear 361a of the wire wheel 320a, as shown, after the rotating motor 330 is started, one wire wheel 320a is driven by the power output shaft 331 to rotate for taking in the wire. The tightened cable drives the other wire wheel 320b to rotate in the opposite direction to simultaneously pay out the wire. The upper and lower ends of the cleaning device 600 are synchronously pulled by the tightened cable 500 and translated horizontally from left to right at the top of the photovoltaic panel array 100.

[0047] As shown Figure 4 When the worm 362 meshes with the worm gear 361b of the wire wheel 320b, as shown, after the rotating motor 330 is started, one wire wheel 320b is driven by the power output shaft 331 to rotate for taking in the wire. The tightened cable drives the other wire wheel 320a to rotate in the opposite direction to simultaneously pay out the wire. The upper and lower ends of the cleaning device 600 are synchronously pulled by the tightened cable 500 and translated horizontally from right to left at the top of the photovoltaic panel array 100.

[0048] During the pulling process of the cleaning device 600, the two strip-shaped brushes 630 clean the top surface of the photovoltaic panel. If the cleaning device 600 is controlled to sweep from the left end to the right end of the photovoltaic panel array 100 and then from the right end to the left end, two cleanings can be completed. Each time when cleaning reaches the edge of the photovoltaic panel array 100, the concentrated dust can fall through the through hole 230 of the frame 200.

[0049] In this embodiment, the upper and lower ends of the cleaning device are connected to the same cable, which can ensure that the upper and lower ends of the cleaning device remain synchronized during the translation process and will not produce any displacement difference, thereby ensuring that the cleaning device will not be jammed during translation and ensuring the stability of the operation of the entire mechanical system. Compared with the prior art, only one set of driving motor, wire wheel group, and cable is required in this embodiment, which can effectively reduce the hardware cost and is simple and convenient for installation and maintenance.

[0050] The above has introduced in detail a photovoltaic panel cleaning system provided by an embodiment of the present invention. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the technical solution and its core idea of the present invention; those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A photovoltaic panel cleaning system, characterized in that: include: Two frames are respectively installed at two ends of the photovoltaic panel array in the extension direction; A reel assembly is mounted on a frame; the reel assembly comprises two coaxially arranged reels capable of rotating freely, respectively used for winding and unwinding the line; the reel assembly comprises a rotating motor for driving one reel to rotate; A plurality of pulley blocks are respectively mounted on the ends of the two frames, each pulley block including at least one certain pulley; A taut rope, with both ends of the rope tightly wound around the two pulleys, and the middle of the rope successively passing around the fixed pulleys of the multiple pulley blocks; and A cleaning device is placed on the top of the photovoltaic panel array, and the upper and lower ends of the cleaning device are respectively connected to the rope through a connecting piece; the two connecting pieces can be synchronously translated after being pulled by the rope; When the rotating motor is started, one wire wheel is driven to rotate to reel in the wire, and the taut rope drives the other wire wheel to rotate to release the wire synchronously. Both ends of the cleaning device are synchronously pulled by the taut rope and translate horizontally on top of the photovoltaic panel array.

2. (The frame is a rectangular frame, including a plurality of long rods and a plurality of short rods perpendicular to each other.) The photovoltaic panel cleaning system according to claim 1, characterized in that: The wire wheel assembly comprises: Two oppositely disposed flat plates, the bottoms of which are fixed to a frame; At least one sliding rod, two ends of which are respectively vertically connected to the two flat plates; the extending direction of the sliding rod is consistent with the extending direction of the photovoltaic panel array; A slider slidably mounted to at least one slide bar; the rotary motor is mounted to the slider; and The stepper motor is fixed to a flat plate; the stepper motor comprises a telescopic rod, and the front end of the telescopic rod is connected to the slider.

3. The photovoltaic panel cleaning system according to claim 1, characterized in that: The wire wheel assembly comprises: Two oppositely disposed flat plates, the bottoms of which are fixed to a frame; The two ends of the reel shaft are respectively connected vertically to the middle of the two flat plates; each reel is rotatably mounted to a reel shaft through a bearing, and there is a reel gap between the two reels; A worm wheel is disposed on a surface of one wire wheel facing the other wire wheel; and The worm is arranged at the front end of the power output shaft of the rotating motor. The worm is inserted into the gap between the wire wheels and meshes with a worm wheel.

4. The photovoltaic panel cleaning system according to claim 1, characterized in that: The wire wheel assembly comprises: Two oppositely disposed flat plates, the bottoms of which are fixed to a frame; A connecting plate, both ends of which are vertically connected to one end of the two flat plates, and arranged opposite to the two wire wheels; two sets of cable assemblies, each set of cable assemblies being mounted to the connection plate; and Two sets of transmission components, each set of cable assembly is connected to a wire wheel through a set of transmission components.

5. The photovoltaic panel cleaning system according to claim 4, characterized in that: Each cable assembly includes: A bracket is fixed to the surface of the connecting plate facing the wire wheel; each bracket includes two bracket plates arranged opposite to each other; A bidirectional screw rod, both ends of which are vertically connected to two bracket plates; A guide rod, both ends of which are connected to two bracket plates respectively; the central axis of the guide rod is parallel to the central axis of the bidirectional screw rod; and A wire arranging slider, one end of which is sleeved on the surface of the bidirectional screw and the guide rod and is threadedly connected to the bidirectional screw, and the other end of which is provided with two parallel guide pulleys, the guide pulleys are arranged opposite to a wire wheel, and the extension direction of the central axis of the guide pulley is consistent with the extension direction of the guide rod.

6. The photovoltaic panel cleaning system according to claim 4, characterized in that: Each transmission assembly includes: A rotating shaft connected to one plate through a bearing and extending toward the other plate; A first gear, fixed to a side surface of a wire wheel and coaxially arranged with the wire wheel; a second gear fixed to the rotating shaft; A first annular transmission toothed belt, covering the side surfaces of the first gear and the second gear, and meshing with the first gear and the second gear; a third gear, fixed to the rotating shaft and coaxially arranged with the second gear; a fourth gear fixed to a bidirectional lead screw; and A second annular transmission toothed belt, covering the side surfaces of the third gear and the fourth gear, and meshing with the third gear and the fourth gear; Wherein, the gear ratio between the first gear and the second gear is 1 / 5~1 / 2; The gear ratio between the second gear and the third gear is 4-8; The gear ratio of the third gear to the fourth gear is 1 / 10-1 / 4.

7. The photovoltaic panel cleaning system according to claim 1, characterized in that: The wire wheel assembly further comprises two damping assemblies, each damping assembly being connected to a wire wheel for providing damping for the wire wheel.

8. The photovoltaic panel cleaning system according to claim 7, characterized in that: The damping assembly comprises: a fifth gear, fixed to a side surface of the wire wheel and coaxially arranged with the wire wheel; an electrical damper mounted to a plate, the electrical damper comprising a damping output shaft; and A damping gear is fixed to the front end of the damping output shaft and meshes with the fifth gear.

9. The photovoltaic panel cleaning system according to claim 7, characterized in that: The damping assembly comprises: A damping plate, fixed to a side surface of a wire wheel and coaxially arranged with the wire wheel; A base is mounted on a flat plate, wherein the base is provided with a through hole; A piston rod, slidably inserted into the through hole of the base; a brake pad, detachably mounted to the front end of the piston rod; and An elastic member, one end of which is connected to the base, and the other end of which is connected to the front end of the piston rod, is used to press the brake pad to abut against the damping plate.

10. The photovoltaic panel cleaning system according to claim 1, characterized in that: The photovoltaic panel array and two frames at both ends thereof form a rectangular plate-like structure; Four pulley blocks are arranged at four corners of the rectangular plate structure; The first pulley block is provided with a first pulley and a second pulley; the distance between the first pulley and the line wheel is greater than the distance between the second pulley and the line wheel; The second pulley block is provided with a third pulley and a fourth pulley; the distance between the third pulley and the line wheel is greater than the distance between the fourth pulley and the line wheel; The third pulley block is provided with a fifth pulley and a sixth pulley; the distance between the fifth pulley and the line wheel is greater than the distance between the sixth pulley and the line wheel; The fourth pulley block is provided with a seventh pulley; The rope is passed around the first pulley, the third pulley, the sixth pulley, the seventh pulley, the fifth pulley, the fourth pulley and the second pulley in sequence.

11. The photovoltaic panel cleaning system according to claim 1, characterized in that: The cleaning device comprises: A long strip-shaped vehicle body extending from the upper end to the lower end of the photovoltaic panel array; A moving device is installed at the upper and lower ends of the vehicle body; and Strip brushes are installed on both sides of the vehicle body, and the bristles of the strip brushes extend to the top surface of the photovoltaic panel array.

12. The photovoltaic panel cleaning system according to claim 11, characterized in that: The mobile device comprises: An L-shaped long strip plate, fixed to the vehicle body, the L-shaped long strip plate comprising a first plate and a second plate perpendicular to each other; at least one wheel rotatably mounted to the first plate and capable of rolling on top of the photovoltaic panel array; and At least one limiting wheel is rotatably mounted to the second plate and is capable of rolling on the side wall of the upper end or the lower end of the photovoltaic panel array.

Images