A photovoltaic panel surface cleaning device and method

Abstract

This invention discloses a photovoltaic panel surface cleaning device and method, including a photovoltaic power generation device. The photovoltaic power generation device includes a fixed support frame and a photovoltaic panel. A cleaning mechanism is provided on the photovoltaic power generation device, which includes a pair of movable chains, a scraper, and a connecting shaft. A rotary motor is provided on the outside of the photovoltaic power generation device. In this invention, when the rotary motor is working, it can drive the movable chains to move through sprockets, so that the scraper cleans the surface of the photovoltaic panel under the drag of the movable chains. By connecting the sprockets on multiple fixed support frames together through the connecting shaft and connectors, it is convenient to connect the cleaning mechanisms on multiple photovoltaic power generation devices in series and work synchronously. Therefore, the number of photovoltaic power generation devices installed can be freely combined according to the space size, and multiple cleaning mechanisms can still be driven by the rotary motor to work together, simplifying the control of multiple cleaning mechanisms.

Description

Technical Field

[0001] This invention belongs to the field of photovoltaic panel maintenance technology, specifically a photovoltaic panel surface cleaning device and method. Background Technology

[0002] Photovoltaic panels generally refer to photovoltaic panel modules, which are power generation devices that generate direct current when exposed to sunlight. They are usually installed on rooftops or in unshaded outdoor locations.

[0003] Patent CN217451164U discloses a photovoltaic panel cleaning device, including a water tank, casters, a push rod, a connecting groove, a first insert rod, fixing bolts, nuts, and a first insertion hole. This photovoltaic panel cleaning device allows adjustment of the reach of the crossbar, thereby controlling the cleaning position. Through the coordinated use of the water tank, casters, and push rod, the device can be easily moved according to cleaning needs. The device can spray water through a nozzle and clean with a rotating cleaning brush, resulting in a more thorough cleaning. Patent CN212733193U discloses a photovoltaic panel cleaning device, including support legs, on which are mounted... Equipped with a mounting bracket, the photovoltaic panel is installed inside the mounting bracket. Two mounting plates are fixed to the top of the mounting bracket, and each mounting plate has a sliding rod installed inside. Limiting blocks are installed outside the sliding rods. When cleaning the photovoltaic panel, the device pulls the push rod, which drives the limiting blocks, connecting rods, and cleaning rollers to move up and down, cleaning the photovoltaic panel and reducing the difficulty of cleaning. In addition, when the push rod moves down, it drives the cone rod to move downward, releasing the restriction on the air inlet pipe and allowing air to enter the water tank. This allows the cleaning water inside the water tank to flow in through the outlet pipe, assisting in cleaning the surface of the photovoltaic panel as the cleaning rollers move up and down, thus improving the cleaning effect.

[0004] While the aforementioned cleaning devices can clean the surface of photovoltaic panels, when a large number of photovoltaic panels are installed, a cleaning device needs to be installed on each photovoltaic panel to keep the surface clean. This makes the cleaning work of photovoltaic panels require the control of a large number of cleaning devices, which complicates the control and operation process of photovoltaic panels.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0006] The purpose of this invention is to provide a photovoltaic panel surface cleaning device and method to solve the above-mentioned problems in the prior art.

[0007] To achieve the above objectives, the present invention provides a photovoltaic panel surface cleaning device and method, comprising the following steps:

[0008] Step 1: Connect the rotating motor to the power output terminal of the photovoltaic power generation equipment so that the rotating motor can work under the power provided by the photovoltaic power generation equipment, thereby causing the output shaft of the rotating motor to start rotating;

[0009] Step 2: Under the operation of the rotating motor, the output shaft of the rotating motor drives the end shaft located at the other end of the connector to rotate together through the connector, thereby driving the sprocket on the end shaft to rotate.

[0010] Step 3: As the end shaft rotates, the drive gear fixed on the end shaft is driven to rotate. Under the meshing of the gears, the drive gear drives the connecting shaft to rotate through the driven gear, thereby causing the driven gear on the left end of the connecting shaft to rotate. At this time, the driven gear on the left end of the connecting shaft will drive the sprocket on the left side seat to rotate under the action of the drive gear installed on the left side seat. Under the action of the sprockets on both side seats, the sprocket drives the movable chain to perform a cyclical motion.

[0011] Step 4: As the moving chain rotates, it drives the connecting seats to move together. At this time, since the scraper is connected to the two end caps on the two connecting seats by the traction rope, when the moving chain drives the connecting seats to move, the connecting seats on both sides will drag the scraper through the traction rope. When the moving chain is in cyclical motion, it drives the scraper to reciprocate on the surface of the photovoltaic panel, so that the scraper can clean the surface of the photovoltaic panel and maintain the cleanliness of the photovoltaic panel surface.

[0012] Step 5: After compressing the connector, place it on two adjacent photovoltaic power generation devices. Insert the prisms at both ends of the connector into the ends of the two adjacent end shafts between the two photovoltaic power generation devices. At this time, release the connector so that it can extend outward under the action of the spring, allowing the prisms at both ends of the connector to be inserted into the sockets on both sides, connecting the two adjacent end shafts together. By using multiple connectors to connect the two adjacent end shafts in sequence, a rotating motor can drive the sprockets on multiple side seats to rotate synchronously when working, thus cleaning the photovoltaic power generation devices with a large number of photovoltaic panels and maintaining the surface cleanliness of the photovoltaic panels.

[0013] A photovoltaic panel surface cleaning device is provided to implement the steps of the photovoltaic panel surface cleaning method. The device includes a photovoltaic power generation device, which comprises a fixed support frame and a photovoltaic panel mounted on the fixed support frame. A cleaning mechanism is provided on the photovoltaic power generation device. The cleaning mechanism includes a pair of movable chains rotatably connected to the left and right edges of the top of the fixed support frame, a scraper disposed between the two movable chains, and a connecting shaft rotatably connected to the rear edge of the fixed support frame. A rotating motor is provided on the outside of the photovoltaic power generation device. The rotating motor is connected to the cleaning mechanism, and adjacent cleaning mechanisms are connected by connectors. The rotating motor, the connectors, the movable chains near the rotating motor, the connecting shaft, and the movable chains away from the rotating motor are sequentially connected.

[0014] In the technical solution of the present invention, a plurality of sprockets are engaged on the inner side of the movable chain, and an end shaft is coaxially connected to the sprocket. The sprocket at the top is rotatably connected to the side seat through the end shaft. The side seat is fixedly connected to the fixed bracket frame. The remaining sprockets are rotatably connected to the fixed seat through the end shaft. The fixed seat is fixed at the edge of the fixed bracket frame.

[0015] In the technical solution of the present invention, the scraper is a cylindrical structure made of flexible plastic, a traction rope is inserted inside the scraper, a connecting seat is fixed on the end face of the two movable chains that are close to each other, an end cap is fixed at both ends of the traction rope, and a convex shaft is provided at the tail end of the end cap. The convex shaft extends into the connecting seat and is rotatably connected to the connecting seat.

[0016] In the technical solution of the present invention, the two ends of the connecting shaft pass through the two side seats respectively and are rotatably connected to the side seats. The two ends of the connecting shaft are fixed with driven gears. The sprocket mounted on the side seats is coaxially connected with a driving gear. The driven gear meshes with the driving gear.

[0017] In the technical solution of the present invention, the rotating motor is fixed on the motor base, the output shaft of the rotating motor has a sleeve hole at the end, the end shaft has an insertion hole at the end, both the sleeve hole and the insertion hole are hexagonal holes, and the end of the connector can be inserted into the sleeve hole or the insertion hole.

[0018] In the technical solution of the present invention, the connector includes a sleeve shaft and a movable shaft sleeved in the sleeve shaft. The end of the sleeve shaft and the beginning of the movable shaft are provided with a prism with a hexagonal cross-section, and the prism can be inserted into the sleeve hole or the insertion hole.

[0019] In the technical solution of the present invention, the first end of the sleeve shaft is hollow, the end of the movable shaft is inserted into the first end of the sleeve shaft and slidably connected, a waist-shaped groove is formed on the wall surface of the sleeve shaft, and a pin is inserted into the end of the movable shaft, the pin passing through the waist-shaped groove.

[0020] In the technical solution of the present invention, a spring is sleeved inside the sleeve shaft, the first end of the spring abuts against the end of the movable shaft, and the spring is in a pre-compressed state inside the sleeve shaft.

[0021] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0022] 1. In this invention, the rotating motor and cleaning mechanism enable the rotating motor to drive the movable chain on the cleaning mechanism to rotate via the sprocket during operation. This causes the scraper to be dragged by the movement of the movable chain, making the scraper reciprocate on the surface of the photovoltaic panel, thereby achieving the purpose of cleaning the surface of the photovoltaic panel and keeping the surface of the photovoltaic panel clean.

[0023] 2. In this invention, by setting a connecting shaft and using a connector to connect two adjacent end shafts, the sprockets on multiple fixed support frames can be connected together under the action of the connecting shaft and the connector. This facilitates the series connection of cleaning mechanisms on multiple photovoltaic power generation devices and their synchronous operation. Thus, the number of photovoltaic power generation devices installed can be freely combined according to the space size, and multiple cleaning mechanisms can still be driven to work together by a rotating motor, simplifying the control of multiple cleaning mechanisms. Attached Figure Description

[0024] Figure 1 This is a simplified schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is an exploded view of the overall structure of the present invention;

[0026] Figure 3 This is a structural diagram of the cleaning mechanism in this invention;

[0027] Figure 4 This is a structural diagram of the sprocket in this invention;

[0028] Figure 5 This is a partial structural diagram of the scraper in this invention;

[0029] Figure 6 This is an exploded view of the connector in this invention;

[0030] Figure 7 This is a structural diagram of the connecting shaft in this invention;

[0031] Figure 8 This is an exploded view of the side seat in this invention;

[0032] Figure 9 This is a structural diagram of the rotating motor in this invention;

[0033] Figure 10 This is a structural diagram of the connector in this invention;

[0034] Figure 11 This is an exploded view of the connector in this invention;

[0035] Figure 12 This is a schematic diagram showing the connection of multiple photovoltaic power generation devices in this invention.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1-Photovoltaic power generation equipment; 11-Fixed support frame; 12-Photovoltaic panel;

[0038] 2-Cleaning mechanism; 21-Moving chain; 211-Sprocket; 2111-End shaft; 2112-Insertion hole; 212-Fixed seat; 22-Scraper; 221-Traction rope; 222-Connecting seat; 2221-End cap; 2222-Cam shaft; 23-Connecting shaft; 231-Driven gear; 24-Side seat; 241-Driving gear;

[0039] 3-Rotating motor; 31-Motor base; 32-Sleeve hole;

[0040] 4-Connector; 41-Sleeve shaft; 411-Oval groove; 412-Spring; 42-Modular shaft; 421-Pin; 43-Pyramid. Detailed Implementation

[0041] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0042] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0043] Reference Figures 1-12 A photovoltaic panel surface cleaning device includes a photovoltaic power generation device 1, which includes a fixed support frame 11 and a photovoltaic panel 12 installed on the fixed support frame 11. The fixed support frame 11 supports the photovoltaic panel 12.

[0044] In this invention, a cleaning mechanism 2 is provided on the photovoltaic power generation equipment 1. The cleaning mechanism 2 includes a pair of movable chains 21 that are rotatably connected to the left and right edges of the top of the fixed support frame 11, a scraper 22 disposed between the two movable chains 21, and a connecting shaft 23 that is rotatably connected to the rear edge of the fixed support frame 11.

[0045] Specifically, the inner side of the movable chain 21 is engaged with several sprockets 211, and the sprockets 2111 are coaxially connected to the end shafts 2111. The topmost sprocket 211 is rotatably connected to the side seat 24 through the end shaft 2111. The side seat 24 is fixedly connected to the fixed bracket frame 11. The remaining sprockets 211 are rotatably connected to the fixed seats 212 through the end shafts 2111. The fixed seats 212 are fixed at the edge of the fixed bracket frame 11. By turning the end shaft 2111, the end shaft 2111 can drive the sprockets 211 to rotate, so that the sprockets 211 can circulate at the top edge of the photovoltaic panel 12.

[0046] Furthermore, the scraper 22 is a cylindrical structure made of flexible plastic, with a traction rope 221 inserted inside. Connecting seats 222 are fixed on the close end faces of the two movable chains 21. The end of the traction rope 221 is fixed to the connecting seat 222, so that when the movable chain 21 is driven by the sprocket 211 to move in a cycle, the movable chain 21 will drive the connecting seat 222 to move together, thereby causing the connecting seat 222 to pull the traction rope 221, so that the traction rope 221 can drive the scraper 22 to clean the surface of the photovoltaic panel 12.

[0047] Specifically, both ends of the traction rope 221 are fixed with end caps 2221. The tail end of the end cap 2221 is provided with a convex shaft 2222. The convex shaft 2222 extends into the connecting seat 222 and is rotatably connected to the connecting seat 222. The end of the traction rope 221 is fixedly connected to the end cap 2221, so that when the movable chain 21 drives the traction rope 221 to move together, the traction rope 221 can drive the end cap 2221 to rotate around the connecting seat 222, preventing the traction rope 221 from generating torsional force due to being driven to rotate after the movable chain 21 continuously performs cyclical motion.

[0048] In addition, the two ends of the connecting shaft 23 pass through the two side seats 24 respectively and are rotatably connected to the side seats 24. The two ends of the connecting shaft 23 are fixed with driven gears 231. The drive gear 241 is coaxially connected to the sprocket 211 mounted on the side seat 24. The driven gear 231 meshes with the drive gear 241. When the sprocket 211 mounted on the side seat 24 rotates, the sprocket 211 will drive the drive gear 241 to rotate together, so that the drive gear 241 drives the driven gear 231 to rotate. Under the action of the connecting shaft 23, the movable chain 21 between the two side seats 24 can move synchronously.

[0049] It is worth noting that a rotating motor 3 is provided on the outside of the photovoltaic power generation equipment 1. The rotating motor 3 is fixed on the motor base 31. The rotating motor 3 is connected to the cleaning mechanism 2 and adjacent cleaning mechanisms 2 by connecting parts 4. The rotating motor 3, connecting parts 4, movable chain 21 near the rotating motor 3, connecting shaft 23, and movable chain 21 away from the rotating motor 3 are connected in sequence. The rotating motor 3 can work under the power provided by the photovoltaic power generation equipment 1, so that the output shaft of the rotating motor 3 starts to rotate. At this time, under the connection of the connecting parts 4, the end of the output shaft of the rotating motor 3, the connecting parts 4, the end shaft 2111, and the drive gear 241 can rotate synchronously. Under the connection of the connecting shaft 23, the movable chains 21 on both sides of the photovoltaic power generation equipment 1 can move synchronously in a cycle. When the movable chains 21 on both sides move, they drag the traction rope 221, so that the scraper 22 repeatedly cleans the surface of the photovoltaic panel 12 under the cyclic movement of the movable chains 21.

[0050] In the above scheme, the output shaft of the rotating motor 3 is provided with a sleeve hole 32 at the end, and the end shaft 2111 is provided with a insertion hole 2112 at the end. Both the sleeve hole 32 and the insertion hole 2112 are hexagonal holes. The end of the connector 4 can be inserted into the sleeve hole 32 or the insertion hole 2112, so that the connector 4 is connected between the sleeve hole 32 and the insertion hole 2112.

[0051] Specifically, the connector 4 includes a sleeve shaft 41 and a movable shaft 42 sleeved inside the sleeve shaft 41. The end of the sleeve shaft 41 and the beginning of the movable shaft 42 are provided with a prism 43 with a hexagonal cross-section. The prism 43 can be inserted into the sleeve hole 32 or the insertion hole 2112, so that the connector 4 serves to connect the output shaft of the rotating motor 3 with the end shaft 2111 or connect two adjacent end shafts 2111 together under the action of the connector 4.

[0052] Furthermore, the first end of the sleeve shaft 41 is hollow, and the end of the movable shaft 42 is inserted into the first end of the sleeve shaft 41 and slidably connected. A waist-shaped groove 411 is provided on the wall surface of the sleeve shaft 41, and a pin 421 is inserted into the end of the movable shaft 42. The pin 421 passes through the waist-shaped groove 411. Under the restriction of the pin 421, the end of the movable shaft 42 can be restricted in the first end of the sleeve shaft 41, preventing the movable shaft 42 from coming out of the sleeve shaft 41.

[0053] In addition, a spring 412 is installed inside the sleeve shaft 41. The first end of the spring 412 abuts against the end of the movable shaft 42. The spring 412 is in a pre-compressed state inside the sleeve shaft 41. Under the elastic force of the spring 412, when the connector 4 is installed between two adjacent end shafts 2111, the prism 43 will abut against the bottom of the insertion hole 2112, thereby making the connector 4 press against the end shafts 2111 on both sides, preventing the connector 4 from directly coming off the two adjacent end shafts 2111.

[0054] Meanwhile, by adding new photovoltaic power generation equipment 1 to the side of the photovoltaic power generation equipment 1 and connecting the two adjacent end shafts 2111 on the two photovoltaic power generation equipment 1 together using connector 4, a fixed rotating motor 3 can simultaneously drive the cleaning mechanism 2 on multiple photovoltaic power generation equipment 1 to move together. Thus, different numbers of photovoltaic power generation equipment 1 can be installed according to the space size, which has extremely high scalability.

[0055] The cleaning method of the above-mentioned photovoltaic panel surface cleaning device includes the following steps:

[0056] Step 1: Connect the rotating motor 3 to the power output terminal of the photovoltaic power generation device 1 so that the rotating motor 3 can work under the power provided by the photovoltaic power generation device 1, thereby causing the output shaft of the rotating motor 3 to start rotating;

[0057] Step 2: Under the operation of the rotating motor 3, the output shaft end of the rotating motor 3 drives the end shaft 2111 located at the other end of the connecting piece 4 to rotate together through the connecting piece 4, thereby driving the sprocket 211 on the end shaft 2111 to rotate.

[0058] Step 3: As the end shaft 2111 rotates, the drive gear 241 fixed on the end shaft 2111 is driven to rotate. Under the meshing of the gears, the drive gear 241 drives the connecting shaft 23 to rotate through the driven gear 231, thereby causing the driven gear 231 at the left end of the connecting shaft 23 to rotate. At this time, the driven gear 231 at the left end of the connecting shaft 23 will drive the sprocket 211 on the left side seat 24 to rotate under the action of the drive gear 241 installed on the left side seat 24. Under the action of the sprockets 211 on both side seats 24, the sprockets 211 drive the movable chain 21 seat to rotate in a cycle.

[0059] Step 4: As the movable chain 21 rotates, it drives the connecting seat 222 to move together. At this time, since the scraper 22 is connected to the two end caps 2221 on the two connecting seats 222 by the traction rope 221, when the movable chain 21 drives the connecting seats 222 to move, the connecting seats 222 on both sides will drag the scraper 22 by the traction rope 221. When the movable chain 21 is in cyclical motion, it drives the scraper 22 to reciprocate on the surface of the photovoltaic panel 12, so that the scraper 22 can clean the surface of the photovoltaic panel 12 and maintain the surface cleanliness of the photovoltaic panel 12.

[0060] Step 5: After compressing the connector 4, place it on two adjacent photovoltaic power generation devices 1. Insert the prisms 43 at both ends of the connector 4 into the ends of the two adjacent end shafts 2111 between the two photovoltaic power generation devices 1. At this time, release the connector 4 so that the connector 4 can extend outward under the action of the spring 412, so that the prisms 43 at both ends of the connector 4 can be inserted into the insertion holes 2112 on both sides, so that the two adjacent end shafts 2111 are connected by the connector 4. By using multiple connectors 4 to connect the two adjacent end shafts 2111 in sequence, a rotating motor 3 can drive the sprockets 211 on multiple side seats 24 to rotate synchronously when working, so that the photovoltaic power generation device 1 with a large number of photovoltaic panels 12 is cleaned to maintain the surface cleanliness of the photovoltaic panels 12.

[0061] The foregoing description of specific exemplary embodiments of the invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the invention, as well as various different choices and variations. The scope of the invention is intended to be defined by the claims and their equivalents.

Claims

1. A method for cleaning the surface of a photovoltaic panel, characterized in that: Includes the following steps: Step 1: Connect the rotating motor (3) to the power output terminal of the photovoltaic power generation equipment (1) so that the rotating motor (3) can work under the power provided by the photovoltaic power generation equipment (1), thereby causing the output shaft of the rotating motor (3) to start rotating; Step 2: Under the operation of the rotating motor (3), the output shaft end of the rotating motor (3) drives the end shaft (2111) located at the other end of the connector (4) to rotate together through the connector (4), thereby causing the sprocket (211) on the end shaft (2111) to rotate. Step 3: While the end shaft (2111) is rotating, the drive gear (241) fixed on the end shaft (2111) is driven to rotate. Under the meshing of the gears, the drive gear (241) drives the connecting shaft (23) to rotate through the driven gear (231), thereby causing the driven gear (231) at the left end of the connecting shaft (23) to rotate. At this time, the driven gear (231) at the left end of the connecting shaft (23) will drive the sprocket (211) on the left side seat (24) to rotate under the action of the drive gear (241) installed on the left side seat (24). Under the action of the sprockets (211) on both side seats (24), the sprockets (211) drive the movable chain (21) seat to rotate in a cycle. Step 4: As the movable chain (21) rotates, the movable chain (21) drives the connecting seat (222) to move together. At this time, since the scraper (22) is connected to the two end caps (2221) on the two connecting seats (222) through the traction rope (221), when the movable chain (21) drives the connecting seat (222) to move, the connecting seats (222) on both sides will drag the scraper (22) through the traction rope (221). When the movable chain (21) is in cyclic motion, it drives the scraper (22) to reciprocate on the surface of the photovoltaic panel (12), so that the scraper (22) can clean the surface of the photovoltaic panel (12) and maintain the surface cleanliness of the photovoltaic panel (12). Step 5: After compressing the connector (4), place it on two adjacent photovoltaic power generation devices (1). Insert the prisms (43) at both ends of the connector (4) into the ends of the two adjacent end shafts (2111) between the two photovoltaic power generation devices (1). At this time, loosen the connector (4) so ​​that the connector (4) can extend outward under the action of the spring (412) and insert the prisms (43) at both ends of the connector (4) into the holes (2112) on both sides. The two adjacent end shafts (2111) are connected by the connector (4). By using multiple connectors (4) to connect the two adjacent end shafts (2111) in sequence, a rotating motor (3) can drive the sprockets (211) on multiple side seats (24) to rotate synchronously when working, so that the photovoltaic power generation device (1) with a large number of photovoltaic panels (12) is cleaned to maintain the surface cleanliness of the photovoltaic panels (12).

2. A photovoltaic panel surface cleaning device, used to implement the steps of the photovoltaic panel surface cleaning method of claim 1, comprising a photovoltaic power generation device (1), the photovoltaic power generation device (1) comprising a fixed support frame (11) and a photovoltaic panel (12) mounted on the fixed support frame (11), characterized in that: The photovoltaic power generation equipment (1) is provided with a cleaning mechanism (2). The cleaning mechanism (2) includes a pair of movable chains (21) respectively rotatably connected to the left and right edges of the top of the fixed support frame (11), a scraper (22) disposed between the two movable chains (21), and a connecting shaft (23) rotatably connected to the rear edge of the fixed support frame (11). A rotating motor (3) is provided on the outside of the photovoltaic power generation equipment (1). The rotating motor (3) is connected to the cleaning mechanism (2) and to two adjacent cleaning mechanisms (2) using connectors (4). The rotating motor (3), the connectors (4), the movable chains (21) near the rotating motor (3), the connecting shaft (23), and the movable chains (21) away from the rotating motor (3) are connected in sequence.

3. The photovoltaic panel surface cleaning device as described in claim 2, characterized in that: The inner side of the movable chain (21) is engaged with several sprockets (211), and the sprockets (2111) are coaxially connected to the end shafts (2111). The sprocket (211) at the top is rotatably connected to the side seat (24) through the end shafts (2111). The side seat (24) is fixedly connected to the fixed bracket frame (11). The remaining sprockets (211) are rotatably connected to the fixed seat (212) through the end shafts (2111). The fixed seat (212) is fixed at the edge of the fixed bracket frame (11).

4. The photovoltaic panel surface cleaning device as described in claim 2, characterized in that: The scraper (22) is a cylindrical structure made of flexible plastic. A traction rope (221) is inserted inside the scraper (22). A connecting seat (222) is fixed on the end face of the two movable chains (21) that are close to each other. An end cap (2221) is fixed at both ends of the traction rope (221). A convex shaft (2222) is provided at the tail end of the end cap (2221). The convex shaft (2222) extends into the connecting seat (222) and is rotatably connected to the connecting seat (222).

5. The photovoltaic panel surface cleaning device as described in claim 3, characterized in that: The two ends of the connecting shaft (23) pass through the two side seats (24) respectively and are rotatably connected to the side seats (24). The two ends of the connecting shaft (23) are fixed with driven gears (231). The drive gear (241) is coaxially connected to the sprocket (211) mounted on the side seat (24). The driven gear (231) meshes with the drive gear (241).

6. The photovoltaic panel surface cleaning device as described in claim 3, characterized in that: The rotating motor (3) is fixed on the motor base (31). The output shaft of the rotating motor (3) has a sleeve hole (32) at the end and the end shaft (2111) has a insertion hole (2112) at the end. Both the sleeve hole (32) and the insertion hole (2112) are hexagonal holes. The end of the connector (4) can be inserted into the sleeve hole (32) or the insertion hole (2112).

7. The photovoltaic panel surface cleaning device as described in claim 6, characterized in that: The connector (4) includes a sleeve shaft (41) and a movable shaft (42) sleeved in the sleeve shaft (41). The end of the sleeve shaft (41) and the beginning of the movable shaft (42) are provided with a prism (43) with a hexagonal cross-section. The prism (43) can be inserted into the sleeve hole (32) or the insertion hole (2112).

8. The photovoltaic panel surface cleaning device as described in claim 7, characterized in that: The first end of the sleeve shaft (41) is hollow, and the end of the movable shaft (42) is inserted into the first end of the sleeve shaft (41) and slidably connected. A waist-shaped groove (411) is provided on the wall surface of the sleeve shaft (41), and a pin (421) is inserted into the end of the movable shaft (42), and the pin (421) passes through the waist-shaped groove (411).

9. The photovoltaic panel surface cleaning device as described in claim 8, characterized in that: A spring (412) is fitted inside the sleeve shaft (41), the first end of the spring (412) abuts against the end of the movable shaft (42), and the spring (412) is in a pre-compressed state inside the sleeve shaft (41).

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