Wire wheel assembly and photovoltaic panel cleaning system

Abstract

The utility model provides a wire wheel assembly and a photovoltaic panel cleaning system. The wire wheel assembly comprises a wire wheel frame, two wire wheels of the same size, a sliding block, a stepping motor and a rotating motor. The photovoltaic panel cleaning system comprises two rectangular frames, the wire wheel assembly, a plurality of fixed pulley assemblies, a tightened inhaul cable and a cleaning device. The photovoltaic panel cleaning robot has the advantages that the upper end and the lower end of the cleaning device are pulled through the same inhaul cable at the same time so as to drive the cleaning device to smoothly move horizontally, in the moving process, cleaning of the surface of a photovoltaic panel is achieved, manpower and time cost is saved, and compared with a traditional rail type robot, more manufacturing cost is saved.

Description

Technical Field

[0001] This application relates to the field of photovoltaic panel cleaning technology, and in particular to a reel assembly and a photovoltaic panel cleaning system. Background Technology

[0002] Photovoltaic panels utilize the photovoltaic effect, where semiconductor materials undergo solar energy conversion directly into electrical energy under sunlight. To ensure power generation efficiency, photovoltaic panels are tilted at a certain angle relative to the horizontal plane. Since photovoltaic panels are installed outdoors, dust and other deposits easily accumulate on their surface, leading to a decrease in power generation efficiency.

[0003] When multiple photovoltaic (PV) panels are arranged to form a PV panel array, one or two PV panels are arranged along their length as a unit, and then these units are arranged along the width of the PV panels to form the PV panel array. The surface of the PV panels needs to be cleaned regularly. Using automated cleaning equipment to regularly clean the PV panels can reduce manual cleaning costs and improve cleaning efficiency.

[0004] The automated cleaning device is essentially a cleaning device that moves across the photovoltaic panel array, completing the cleaning task during its movement. To ensure a thorough cleaning process without blind spots, the cleaning device can be designed as a long strip structure that longitudinally spans the photovoltaic panel array. How to achieve overall translation of the cleaning device is a technical problem that must be solved. Summary of the Invention

[0005] One objective of this application is to provide a reel assembly that enables the two ends of a cable wound on two reels to stably and synchronously take in and release the cable, thereby solving the problem of overall translation of the cleaning device.

[0006] This application provides a thread reel assembly, including a thread reel frame, two thread reels of the same size, a slider, a stepper motor, and a rotary motor. The thread reel frame includes two oppositely arranged wide plates, a narrow plate, at least one sliding rod, and a thread reel shaft. The narrow plate is vertically connected to one end of the two wide plates; the sliding rod is vertically connected to the other end of the two wide plates; the thread reel shaft is vertically connected to the middle of the two wide plates. The thread reels are rotatably mounted to the thread reel shaft via bearings; each thread reel has a face gear on its side facing the other thread reel; the slider is slidably mounted to at least one sliding rod; the stepper motor is mounted to one of the wide plates; the stepper motor includes an electric push rod, the front end of which is connected to the slider; the central axis of the electric push rod is parallel to the central axis of the sliding rod; the rotary motor is mounted to the slider, and the rotary motor includes a power output shaft, the front end of which has a bevel gear inserted into the gap between the two thread reels and capable of meshing with one of the face gears.

[0007] Furthermore, the reel assembly includes two cable guides mounted to the narrow plate; each cable guide is disposed opposite to a reel.

[0008] Furthermore, the cable guide includes two cable guide brackets, a bidirectional lead screw, a guide rod, and a cable guide shape block. The cable guide brackets are vertically connected to the narrow plate; both ends of the bidirectional lead screw are vertically connected to the two cable guide brackets respectively; both ends of the guide rod are vertically connected to the two cable guide brackets respectively; one end of the cable guide shape block is sleeved on the surface of the bidirectional lead screw and the guide rod, and is threadedly connected to the bidirectional lead screw; the other end of the block has two parallel guide wheels, the extension direction of the central axis of the guide wheels is consistent with the extension direction of the guide rod.

[0009] Furthermore, the reel assembly includes two transmission components, each used to connect the oppositely arranged cable guide and the reel.

[0010] Furthermore, each transmission component includes a rotating shaft, a first gear, a second gear, a third gear, a fourth gear, a first annular transmission belt, and a second annular transmission belt. The rotating shaft is mounted to a wide plate via a bearing; the first gear is mounted to the side of a lead screw; the second gear is fixed to the rotating shaft; the third gear is fixed to the rotating shaft; the fourth gear is mounted to one end of the bidirectional lead screw; the first annular transmission belt is meshably fitted onto the tooth surfaces of the first gear and the second gear; the second annular transmission belt is meshably fitted onto the tooth surfaces of the third gear and the fourth gear.

[0011] Furthermore, the reel assembly also includes two damping assemblies, each damping assembly being connected to a reel, and the two damping assemblies being used to provide damping for the two reels respectively.

[0012] Furthermore, the damping assembly includes a fifth gear, a resistance damper, and a damping gear. The fifth gear is fixed to the side surface of a reel and is coaxially arranged with the reel; the resistance damper is mounted on a wide plate and includes a damping output shaft; the damping gear is fixed to the front end of the damping output shaft and meshes with the fifth gear.

[0013] Furthermore, the damping assembly includes a damping plate, a base, a piston rod, a brake pad, and an elastic element. The damping plate is fixed to the side surface of a spool and is coaxially arranged with the spool; the base is mounted to a wide plate and has a through hole; the rear end of the piston rod is slidably inserted into the through hole of the base, and its front end is opposite to the damping plate; the brake pad is detachably mounted to the front end of the piston rod; one end of the elastic element is connected to the base, and the other end is connected to the front end of the piston rod, for pressing the brake pad against the damping plate.

[0014] Another objective of this application is to provide a photovoltaic panel cleaning system to solve the problem of how the cleaning device can achieve overall synchronous translation, so as to solve the problem of regular cleaning of the photovoltaic panel surface.

[0015] This application also provides a photovoltaic panel cleaning system, including two rectangular frames, the aforementioned pulley assembly, multiple fixed pulley assemblies, a taut cable, and a cleaning device. Two rectangular frames are respectively installed at both ends of a photovoltaic panel array in its extension direction; two reels are used for winding and unwinding the wire respectively; two wide plates are fixed to a rectangular frame; fixed pulley assemblies are respectively installed at the upper and lower ends of the two rectangular frames; each fixed pulley assembly includes at least one pulley; the two ends of the cable are respectively connected to and tightly wound around the two reels, and the two ends of the cable are wound in opposite directions on the two reels; the middle part of the cable passes around the fixed pulley of each fixed pulley assembly successively; the cleaning device is placed on top of the photovoltaic panel array, and the upper and lower ends of the cleaning device are respectively connected to the cable through a connector; the two connectors can be synchronously translated after being pulled by the cable; when the rotating motor is started, one reel is driven by the rotating motor to rotate and wind up the wire, and the taut cable drives the other reel to rotate and unwind the wire synchronously. The two ends of the cleaning device are synchronously pulled by the taut cable and translate horizontally on top of the photovoltaic panel array.

[0016] Further, the fixed pulley assembly includes a base plate, a C-shaped frame, an upper pulley group, and a lower pulley group. The base plate is fixed to the upper or lower end of a rectangular frame and extends outward from the rectangular frame; the C-shaped frame is fixed to the top surface of the base plate, and the top of the C-shaped frame forms a crossbeam; the upper pulley group includes two fixed pulleys arranged side by side, disposed above the crossbeam; the lower pulley group includes two fixed pulleys arranged side by side, disposed below the crossbeam; wherein, the middle portion of the cable passes through two or more upper pulley groups and two or more lower pulley groups.

[0017] Furthermore, the cleaning device includes a long, narrow vehicle body, a moving device, and strip-shaped brushes. The vehicle body extends from the upper end to the lower end of the photovoltaic panel array; the moving device is mounted on the upper and lower ends of the vehicle body; the strip-shaped brushes are located on the front and rear sides of the vehicle body, extending from the upper end to the lower end of the vehicle body, with the bristles of the strip-shaped brushes extending to the top surface of the photovoltaic panel array.

[0018] Furthermore, the mobile device includes an L-shaped long strip, two or more wheels, and two or more auxiliary wheels. The L-shaped long strip is fixed to the vehicle body, and the L-shaped long strip includes a first plate and a second plate perpendicular to each other, with the extending direction of the L-shaped long strip perpendicular to the extending direction of the vehicle body; the wheels are rotatably mounted to the first plate and can roll on the top surface of the photovoltaic panel array; the auxiliary wheels are rotatably mounted to the second plate and can roll on the side wall at the upper or lower end of the photovoltaic panel array.

[0019] Compared with the prior art, the advantages of this application are:

[0020] This application provides a pulley assembly and a photovoltaic panel cleaning system. A pulley assembly and a rotating motor are installed at one end of a photovoltaic panel array. A cleaning device is placed on the photovoltaic panel array. A cable, passing over multiple pulley sets, is connected to the upper and lower ends of the cleaning device, allowing both ends of the cleaning device to move synchronously. This ensures that the cleaning device does not jam during translation, guaranteeing the smooth and stable operation of the entire mechanical system. During translation, the cleaning device cleans the surface of the photovoltaic panels, saving labor and time costs, and reducing manufacturing costs compared to traditional track-mounted robots. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the photovoltaic panel cleaning system described in the embodiments of this application;

[0023] Figure 2 This is a schematic diagram of the thread reel assembly described in the embodiments of this application;

[0024] Figure 3 This is a schematic diagram of the structure of the ribbon cable device described in the embodiments of this application;

[0025] Figure 4 This is a schematic diagram of the structure of the transmission assembly described in the embodiments of this application. Figure 1 ;

[0026] Figure 5 This is a schematic diagram of the structure of the transmission assembly described in the embodiments of this application. Figure 2 ;

[0027] Figure 6 This is a schematic diagram of the structure of the damper described in the embodiments of this application. Figure 1 ;

[0028] Figure 7 This is a schematic diagram of the damper structure in another embodiment of this application. Figure 2 ;

[0029] Figure 8 This is a schematic diagram of the cable transmission described in the embodiments of this application. Figure 1 ;

[0030] Figure 9 This is a schematic diagram of the cable transmission described in the embodiments of this application. Figure 2 ;

[0031] Figure 10 This is a schematic diagram of the cleaning device described in the embodiments of this application.

[0032] Explanation of reference numerals in the attached figures:

[0033] 100 Photovoltaic panel cleaning system, 101 First rectangular frame, 102 Second rectangular frame, 103 Cable, 104 First cable section, 105 Second cable section;

[0034] 110 photovoltaic panel array;

[0035] 200 Fixed pulley assembly, 201 Base plate, 202 C-shaped frame, 203 Upper pulley assembly, 204 Lower pulley assembly, 205 Fixed pulley, 206 Crossbeam;

[0036] 300 Thread pulley assembly, 301 First thread pulley, 302 Second thread pulley, 303 Wide plate, 304 Rotary motor, 305 Narrow plate, 306 Slide bar, 307 Thread pulley shaft, 308 Slider, 309 Stepper motor, 310 Thread pulley, 311 Thread pulley frame, 312 Face gear, 313 Electric push rod, 314 Power output shaft, 315 Bevel gear;

[0037] 400 Sweeping device, 401 Vehicle body, 402 Moving device, 403 Strip brush, 404 L-shaped long strip plate, 405 Wheel, 406 Auxiliary wheel, 407 First plate, 408 Second plate;

[0038] 500 cable guide, 501 cable guide bracket, 502 two-way lead screw, 503 guide rod, 504 cable guide block, 505 guide wheel;

[0039] 600 Transmission assembly, 601 Rotating shaft, 602 First gear, 603 Second gear, 604 Third gear, 605 Fourth gear, 606 First annular transmission belt, 607 Second annular transmission belt;

[0040] 700 Damping assembly, 701 Fifth gear, 702 Resistance damper, 703 Damping gear, 704 Damping output shaft, 705 Damping plate, 706 Base, 707 Piston rod, 708 Brake pad, 709 Elastic element. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application. In this application, unless otherwise stated, directional terms such as "up," "down," "left," and "right" generally refer to up, down, left, and right in the actual use or working state of the device, specifically the drawing directions in the accompanying drawings.

[0042] like Figures 1-2 As shown, this application provides a photovoltaic panel cleaning system 100, including two rectangular frames, namely a first rectangular frame 101 and a second rectangular frame 102, a pulley assembly 300, a plurality of fixed pulley assemblies 200, a taut cable 103, and a cleaning device 400.

[0043] The first rectangular frame 101 and the second rectangular frame 102 are respectively installed at both ends of a photovoltaic panel array 100 in its extending direction; the reel assembly 300 includes two reels 310 of the same size, two oppositely arranged wide plates 303, and a rotating motor 304, which are respectively the first reel 301 and the second reel 302. The two reels 310 are used for winding and unwinding the wire, respectively; the two wide plates 303 are fixed to a rectangular frame. In this embodiment, the wide plates 303 are fixed above the first rectangular frame 101; the fixed pulley assembly 200 is respectively installed at the upper and lower ends of the two rectangular frames; each fixed pulley assembly 200 includes at least one fixed pulley 205; the two ends of the cable 103 are respectively connected to and tightly wound around the two reels 310, and the two ends of the cable 103 are wound in opposite directions on the two reels 310; the middle part of the cable 103 passes around the fixed pulley 205 of each fixed pulley assembly 200 in turn; the cleaning device 400 is placed on top of the photovoltaic panel array. 100. The upper and lower ends of the cleaning device 400 are connected to the cable 103 by a connector (not shown). The two connectors (not shown) can move synchronously after being pulled by the cable 103. When the rotating motor 304 is started, one reel 310 is driven by the rotating motor 304 to rotate and take in the line. The taut cable 103 drives the other reel 310 to rotate and release the line synchronously. The two ends of the cleaning device 400 are pulled synchronously by the taut cable 103 and move horizontally on the top of the photovoltaic panel array 110.

[0044] Furthermore, the reel assembly 300 also includes a reel frame 311, which further includes a narrow plate 305, at least one slide bar 306, a reel shaft 307, a slider 308, and a stepper motor 309.

[0045] A narrow plate 305 is vertically connected to one end of two wide plates 303; a slide bar 308 is vertically connected to the other end of the two wide plates; a spool shaft 307 is vertically connected to the middle of the two wide plates; a spool 310 is rotatably mounted to the spool shaft 307 via a bearing (not shown); each spool 310 has a gear 312 on its side facing the other spool 310; a slider 308 is slidably mounted to at least one slide bar 306; a stepper motor 309 is mounted to a wide plate 303; the stepper motor 309 includes an electric push rod 313, the front end of which is connected to the slider 308; the central axis of the electric push rod 313 is parallel to the central axis of the slide bar 306; a rotary motor 304 is mounted to the slider 308, the rotary motor 304 includes a power output shaft 314, the front end of which has a bevel gear 315, which is inserted into the gap between the two spools 310 and can mesh with a gear 312.

[0046] In this embodiment, the electric push rod 313 pushes the slider 308 to move along the extension direction of the slide rod 306. At this time, the rotating motor 304 moves synchronously with the slider 308. During the movement of the slider 308, the bevel gear 315 on the power output shaft 314 can mesh with the face gear 312 of the first thread reel 301 and the face gear 312 of the second thread reel 302 respectively. When the bevel gear 315 meshes with the face gear 312 of the first thread reel 301, the power output shaft 314 rotates and drives the first thread reel 301 to rotate. At this time, the first thread reel 301 takes in the line and the second thread reel 302 releases the line. When the bevel gear 315 meshes with the face gear 312 of the second thread reel 302, the power output shaft 314 rotates and drives the second thread reel 302 to rotate. At this time, the first thread reel 301 releases the line and the second thread reel 302 takes in the line.

[0047] like Figure 1 as well as Figure 3 As shown, the reel assembly 300 includes two cable guides 500, which are mounted to the narrow plate 305; each cable guide 500 is disposed opposite to a reel 310.

[0048] Furthermore, the cable guide 500 includes two cable guide brackets 501, a bidirectional lead screw 502, a guide rod 503, and a cable guide block 504.

[0049] The cable guide bracket 501 is vertically connected to the narrow plate 305; the two ends of the bidirectional lead screw 502 are vertically connected to the two cable guide brackets 501 respectively; the two ends of the guide rod 503 are vertically connected to the two cable guide brackets 501 respectively; one end of the cable guide block 504 is sleeved on the surface of the bidirectional lead screw 502 and the guide rod 503, and is threadedly connected to the bidirectional lead screw 502; the other end is provided with two parallel guide wheels 505, and the extension direction of the central axis of the guide wheel 505 is consistent with the extension direction of the guide rod 503.

[0050] In this embodiment, the cable guides 500 are a first cable guide 510 and a second cable guide 520. The first cable guide 510 is connected to the first reel 301 through the transmission assembly 600, and the second cable guide 520 is connected to the second reel 302 through the transmission assembly 600. The cable guides 500 ensure that the cable 103 wound each time is on the same curved surface, and the cable 103 wound in the same time will not overlap, thus avoiding the cable 103 from getting tangled and affecting the operation of the photovoltaic panel cleaning system. When the bidirectional lead screw 502 is rotated, the cable guide shape block 504 can be translated in the horizontal direction. When the cable 103 has been wound around the reel 310 for the first time, the cable guide shape block 504 just drives the cable 103 to be translated to the position of the second turn. The cable 103 wound in the first turn and the cable 103 wound in the second turn are adjacent to each other, thus avoiding the cable 103 from getting tangled.

[0051] like Figures 3-5 As shown, the reel assembly 300 includes two transmission assemblies 600, namely a first transmission assembly 610 and a second transmission assembly 620. The first reel 301 is connected to the first cable guide 510 through the first transmission assembly 610, and the second reel 302 is connected to the second cable guide 520 through the second transmission assembly 620. Each transmission assembly 600 is used to connect the oppositely arranged cable guide 500 and the reel 310.

[0052] Furthermore, each transmission assembly 600 includes a rotating shaft 601, a first gear 602, a second gear 603, a third gear 604, a fourth gear 605, a first annular transmission belt 606, and a second annular transmission belt 607.

[0053] A rotating shaft 601 is mounted to a wide plate 303 via a bearing (not shown); a first gear 602 is mounted to the side of a lead pulley 310; a second gear 603 is fixed to the rotating shaft 601; the gear ratio between the second gear 603 and the first gear 602 is 3 to 6; a third gear 604 is fixed to the rotating shaft 601; the gear ratio between the third gear 604 and the second gear 603 is 1 / 8 to 1 / 3; a fourth gear 605 is mounted to one end of a double-acting lead screw 502; the gear ratio between the fourth gear 605 and the third gear 604 is 4 to 8; a first annular transmission belt 606 is meshably fitted onto the tooth surfaces of the first gear 602 and the second gear 603; a second annular transmission belt 607 is meshably fitted onto the tooth surfaces of the third gear 604 and the fourth gear 605.

[0054] In this embodiment, by setting a fixed gear ratio, when the cable 103 has finished winding the first turn on the spool 310, the linear guide block 504 moves the distance on the bidirectional lead screw 502 just enough to move the cable 103 to the position of the second turn, thus preventing the cable 103 from getting tangled.

[0055] Furthermore, the spool assembly 300 also includes two damping assemblies 700, each damping assembly 700 being connected to a spool 310, and the two damping assemblies 700 being used to provide damping for the two spools 310 respectively.

[0056] like Figure 2 As shown, the damping component 700 is an electromagnetic damper, which includes a fifth gear 701, a resistance damper 702, and a damping gear 703.

[0057] The fifth gear 701 is fixed to the side surface of the reel 310 and is coaxial with the reel 310; the damper 702 is mounted on a wide plate 303 and includes a damping output shaft 704; the damping gear 703 is fixed to the front end of the damping output shaft 704 and meshes with the fifth gear 701. When the reel 310 rotates, the damper 702 provides a certain damping to prevent the cable 103 of the reel 310 from loosening, causing the cable 103 to become knotted, which would affect the operation of the photovoltaic panel cleaning system 100.

[0058] like Figure 6 As shown, in other embodiments, the damping assembly 700 can also be a brake pad damper. The damping assembly 700 includes a damping plate 705, a base 706, a piston rod 707, a brake pad 708, and an elastic element 709.

[0059] A damping plate 705 is fixed to the side surface of a reel 310 and is coaxially arranged with the reel 310. A base 706 is mounted on a wide plate 303 and has a through hole (not shown). The rear end of a piston rod 707 is slidably inserted into the through hole of the base 706 (not shown), and the front end of the piston rod 707 is opposite to the damping plate 705. A brake pad 708 is detachably mounted to the front end of the piston rod 707. One end of an elastic member 709 is connected to the base 706, and the other end is connected to the front end of the piston rod 707. It is used to press the brake pad 708 against the damping plate 705, increasing the friction between the brake pad 708 and the damping plate 705. When the reel 310 rotates, the friction between the brake pad 708 and the damping plate 705 provides resistance to prevent the cable 103 of the reel 310 from loosening, causing the cable 103 to become knotted, which would affect the operation of the photovoltaic panel cleaning system 100.

[0060] like Figure 7 As shown, the fixed pulley assembly 200 includes a base plate 201, an inverted frame 202, an upper pulley assembly 203, and a lower pulley assembly 204.

[0061] The base plate 201 is fixed to the upper or lower end of the rectangular frame and extends outward from the rectangular frame; the C-shaped frame 202 is fixed to the top surface of the base plate 201, and a crossbeam 206 is formed at the top of the C-shaped frame 202; the upper pulley group 203 includes two fixed pulleys 205 arranged in parallel and disposed above the crossbeam 206; the lower pulley group 204 includes two fixed pulleys 205 arranged in parallel and disposed below the crossbeam 206; wherein, the middle part of the cable 103 passes through two or more upper pulley groups 203 and two or more lower pulley groups 204.

[0062] like Figures 8-9 As shown, in this embodiment, the cable 103 achieves synchronous movement of both ends of the cleaning device 400 through a specific winding method between the upper pulley group 203 and the lower pulley group 204 of the fixed pulley assembly 200. For example, the fixed pulley assemblies 200 are defined as a first fixed pulley assembly 210, a second fixed pulley assembly 220, a third fixed pulley assembly 230, and a fourth fixed pulley assembly 240. The cable 103 passes sequentially through the upper pulley group 203 of the first fixed pulley assembly 210 and the lower pulley group of the second fixed pulley assembly 220. 204, the lower pulley group 204 of the third fixed pulley assembly 230, the upper pulley group 203 or the lower pulley group 204 of the fourth fixed pulley assembly 240, the upper pulley group 203 of the third fixed pulley assembly 230, the upper pulley group 203 of the second fixed pulley assembly 220, and the lower pulley group 204 of the first fixed pulley assembly 210, by adjusting the rotation mode of the first pulley 301 and the second pulley 302, control the movement direction of the cleaning device 400 on the top of the photovoltaic panel array 110.

[0063] In this embodiment, the connecting cable 103 segments connected to the upper and lower ends of the cleaning device 400 are the first cable segment 104 and the second cable segment 105, respectively, and the moving directions of the first cable segment 104 and the second cable segment 105 are always consistent.

[0064] like Figure 10 As shown, the cleaning device 400 includes a long, narrow body 401, a moving device 402, and a strip-shaped brush 403.

[0065] The vehicle body 401 extends from the upper end of the photovoltaic panel array 100 to its lower end; the moving device 402 is installed at the upper and lower ends of the vehicle body 401; the strip brush 403 is provided on the front and rear sides of the vehicle body 401, the strip brush 403 extends from the upper end of the vehicle body 401 to the lower end of the vehicle body 401, and the bristles of the strip brush 403 extend to the top surface of the photovoltaic panel array 110.

[0066] Furthermore, the mobile device 402 includes an L-shaped strip 404, two or more wheels 405, and two or more auxiliary wheels 406.

[0067] The L-shaped long strip 404 includes a first plate 407 and a second plate 408 that are perpendicular to each other. The first plate 407 is fixed to the bottom surface of the vehicle body 401, and the extension direction of the L-shaped long strip 404 is perpendicular to the extension direction of the vehicle body 401. The wheel 405 is rotatably mounted to the first plate 407 and can roll on the top surface of the photovoltaic panel array 110. The auxiliary wheel 406 is rotatably mounted to the second plate 408 and can roll on the side wall at the upper or lower end of the photovoltaic panel array 110.

[0068] In this embodiment, the brush head of the strip brush 403 faces the surface of the photovoltaic panel array 110. When the cleaning device 400 moves on the surface of the photovoltaic panel array 110, the brush head of the strip brush 403 can clean the dirt and dust on the photovoltaic panel array 110. During the reciprocating movement of the moving device 402 between the first rectangular frame 101 and the second rectangular frame 102, since the moving device 402 is equipped with two strip brushes 403, one reciprocating movement of the moving device 402 cleans the surface of the photovoltaic panel array 110 four times, thus improving the cleaning efficiency.

[0069] In this embodiment, in an application scenario, for example, the initial position of the mobile device 402 is located at one end of the photovoltaic panel array 110 near the first rectangular frame 101. At this time, the stepper motor 309 and the rotary motor 304 are started. The electric push rod 313 pushes the power output shaft 314 of the rotary motor 304 closer to the first wire pulley 301. When the bevel gear 315 on the power output shaft 314 meshes with the face gear 312 of the first wire pulley 301, the stepper motor 309 is turned off. The rotation of the power output shaft 314 drives the first wire pulley 301 to rotate through the bevel gear 315. The rotation of the first wire pulley 301 drives the first transmission assembly 610 to rotate. The rotation of the first transmission assembly 610 drives the bidirectional lead screw 502 of the first wire guide 510 to rotate. The rotation of the bidirectional lead screw 502 of the first wire guide 510 drives the wire guide block 504 of the first wire guide 510 to move along the extension direction of the guide rod 503. At this time, the first wire pulley 301 retracts the wire. During the retraction process of the first wire pulley 301, the cable 1... 03 drives the second thread wheel 302 to rotate. At this time, the second thread wheel 302 releases the thread. The rotation of the second thread wheel 302 drives the second transmission component 620 to rotate. The rotation of the second transmission component 620 drives the bidirectional lead screw 502 of the second thread arranger 520 to rotate. The rotation of the bidirectional lead screw 502 of the second thread arranger 520 drives the thread arrangement block 504 of the second thread arranger 520 to move along the extension direction of the guide rod 503. The cable 103 achieves synchronous movement of both ends of the cleaning device 400 through a specific winding method between the upper pulley group 203 and the lower pulley group 204 of each fixed pulley assembly 200. At this time, the moving device 402 moves away from the first rectangular frame 101. During the movement of the moving device 402, the brush head of the strip brush 403 faces the surface of the photovoltaic panel array 110. When the cleaning device 400 moves on the surface of the photovoltaic panel array 110, the brush head of the strip brush 403 can clean the dirt and dust of the photovoltaic panel array 110.

[0070] When the moving device 402 moves from one end of the photovoltaic panel array 110 near the second rectangular frame 102 to one end near the first rectangular frame 101, the bevel gear 315 on the power output shaft 314 meshes with the face gear 312 of the second spool 302, driving the second spool 302 to rotate. At this time, the second spool 302 takes in the line, and the first spool 301 releases the line. The transmission process is the same as when the bevel gear 315 on the power output shaft 314 meshes with the face gear 312 of the first spool 301, and will not be described again here.

[0071] Another existing photovoltaic panel cleaning device uses a drive motor, two pulleys, and a cable at the top and bottom of the photovoltaic panel array, respectively. These components pull the upper and lower ends of the cleaning device, causing it to move and clean. In this design, the two drive motors are controlled independently, making it difficult to guarantee the synchronicity of the two cables during translation. This can lead to displacement differences between the upper and lower ends of the cleaning device. Furthermore, because the frictional resistance between the upper and lower sidewalls of the photovoltaic panel and the limiting wheels of the cleaning device differs, even if the driving forces of the two motors are exactly the same, it is difficult to ensure that the translational speeds of the upper and lower ends of the cleaning device are completely consistent, resulting in displacement differences. When these displacement differences reach a certain threshold, the connection between the cleaning device and the upper and lower ends of the photovoltaic panel array can become jammed, interrupting the normal cleaning process.

[0072] This application provides a pulley assembly and a photovoltaic panel cleaning system. A pulley assembly and a rotating motor are installed at one end of a photovoltaic panel array. A cleaning device is placed on the photovoltaic panel array. A cable, passing over multiple pulley sets, connects to the upper and lower ends of the cleaning device, ensuring that the upper and lower ends of the cleaning device remain synchronized during translation, preventing displacement differences and ensuring that the cleaning device does not jam during translation, thus ensuring the smooth and stable operation of the entire mechanical system. During translation, the cleaning device cleans the surface of the photovoltaic panels, saving labor and time costs, and is more cost-effective in manufacturing compared to traditional track-mounted robots.

[0073] The above provides a detailed description of the reel assembly and photovoltaic panel cleaning system provided by this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A line wheel assembly characterized by, The line wheel assembly comprises a line wheel frame, the line wheel frame comprising two opposite wide plates; a narrow plate, vertically connected to one end of the two wide plates; at least one slide rod, vertically connected to the other end of the two wide plates; and a line wheel shaft, vertically connected to the middle of the two wide plates; two line wheels of the same size, rotatably mounted to the line wheel shaft through a bearing; each line wheel is provided with a face gear on the side facing the other line wheel; a slide block, slidably mounted to the at least one slide rod; a stepping motor, mounted to one wide plate; the stepping motor comprises an electric push rod, the front end of the electric push rod being connected to the slide block; the central axis of the electric push rod is parallel to the central axis of the slide rod; and a rotating motor, mounted to the slide block, the rotating motor comprising a power output shaft, the front end of the power output shaft being provided with a bevel gear, which is inserted into the gap between the two line wheels and can engage with the face gear. The line wheel assembly comprises 2. The line wheel assembly of claim 1, wherein, two line arranging devices, mounted to the narrow plate; each line arranging device is opposite to one line wheel. The line arranging device comprises 3. The line wheel assembly of claim 2, wherein, two line arranging device supports, vertically connected to the narrow plate; a bidirectional screw rod, the two ends of the bidirectional screw rod being vertically connected to the two line arranging device supports, respectively; a guide rod, the two ends of the guide rod being vertically connected to the two line arranging device supports, respectively; and a line arranging strip block, one end of the line arranging strip block being sleeved on the surface of the bidirectional screw rod and the guide rod and being threadedly connected with the bidirectional screw rod, the other end of the line arranging strip block being provided with two parallel guide wheels, the extension direction of the central axis of the guide wheels being consistent with the extension direction of the guide rod. The line wheel assembly comprises 4. The line wheel assembly of claim 2, wherein, two transmission assemblies, each transmission assembly being used to connect the opposite line arranging device and line wheel.

5. The line wheel assembly according to claim 4, wherein each transmission assembly comprises a rotating shaft, mounted to one wide plate through a bearing; a first gear, mounted to the side surface of one line wheel; a second gear, fixed to the rotating shaft; a third gear, fixed to the rotating shaft; a fourth gear, mounted to one end of the bidirectional screw rod; a first annular transmission belt, sleeved on the tooth surfaces of the first gear and the second gear in an engageable manner; and a second annular transmission belt, sleeved on the tooth surfaces of the third gear and the fourth gear in an engageable manner. The line wheel assembly further comprises 6. The line wheel assembly of claim 1, wherein, two damping assemblies, each damping assembly being connected to one line wheel, the two damping assemblies being used to provide damping for the two line wheels, respectively. The damping assembly comprises 7. The line wheel assembly of claim 6, wherein, a fifth gear, fixed to the side surface of one line wheel and coaxially arranged with the line wheel; an electric damper, mounted to one wide plate, the electric damper comprising a damping output shaft; and a damping gear, fixed to the front end of the damping output shaft and engaged with the fifth gear. The damping assembly comprises 8. The line wheel assembly of claim 6, wherein, a damping plate, fixed to the side surface of one line wheel and coaxially arranged with the line wheel; a base, mounted to one wide plate, the base being provided with a through hole; a piston rod, the rear end of the piston rod being slidably inserted into the through hole of the base, the front end of the piston rod being opposite to the damping plate; a brake pad, detachably mounted to the front end of the piston rod; and a resilient member, one end of the resilient member being connected to the base, the other end of the resilient member being connected to the front end of the piston rod, used to press the brake pad against the damping plate. The line wheel assembly comprises 9. A photovoltaic panel cleaning system characterized by, ​ two rectangular frames, respectively mounted to two ends of a photovoltaic panel array in its extending direction; the line wheel assembly of any one of claims 1-8, two line wheels respectively for winding and unwinding, and two said wide plates fixed to a rectangular frame; a plurality of pulley assemblies, respectively mounted to upper and lower ends of the two rectangular frames, each pulley assembly comprising at least one pulley; a taut cable, both ends of which are connected to and tightly wound around the two line wheels, the winding directions of the two ends of the cable on the two line wheels being opposite, and the middle portion of the cable passing through the pulleys of each pulley assembly in turn; and a cleaning device placed on top of the photovoltaic panel array, upper and lower ends of the cleaning device being connected to the cable through a connecting member, the two connecting members being able to synchronously translate when pulled by the cable; when the rotating motor is started, one line wheel is rotated by the rotating motor to wind, the taut cable drives the other line wheel to rotate to unwind synchronously, and the two ends of the cleaning device are synchronously pulled by the taut cable to translate horizontally on top of the photovoltaic panel array.

10. The photovoltaic panel cleaning system of claim 9, wherein the pulley assembly comprises: a base plate fixed to an upper end or a lower end of a rectangular frame and extending out of the rectangular frame; a U-shaped frame fixed to a top surface of the base plate, a top portion of the U-shaped frame forming a crossbeam; an upper pulley set comprising two pulleys arranged side by side and disposed above the crossbeam; a lower pulley set comprising two pulleys arranged side by side and disposed below the crossbeam; and wherein the middle portion of the cable passes through two or more upper pulley sets and two or more lower pulley sets.

11. The photovoltaic panel cleaning system of claim 9, wherein, the cleaning device comprises: an elongated vehicle body extending from an upper end to a lower end of the photovoltaic panel array; a moving device mounted to upper and lower ends of the vehicle body; and an elongated brush disposed on both sides of the vehicle body, bristles of the elongated brush extending to a top surface of the photovoltaic panel array.

12. The photovoltaic panel cleaning system of claim 11, wherein, the moving device comprises: an L-shaped elongated plate fixed to the vehicle body, the L-shaped elongated plate comprising a first plate and a second plate perpendicular to each other; two or more wheels rotatably mounted to the first plate and capable of rolling on the top surface of the photovoltaic panel array; and two or more auxiliary wheels rotatably mounted to the second plate and capable of rolling on a side wall of the upper end or the lower end of the photovoltaic panel array.

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