Photovoltaic panel cleaning device

Abstract

The invention relates to the technical field of photovoltaic panels, and discloses a photovoltaic panel cleaning device which comprises a box body and a driving trolley driving the box body to move, a cleaning device and a water spraying device are arranged on the front section of the box body, the cleaning device comprises a cleaning frame, an outer cleaning roller and an inner cleaning roller, and the outer cleaning roller and the inner cleaning roller are rotationally connected to the cleaning frame. The outer cleaning roller is arranged in a hollow mode, the inner cleaning roller is movably arranged in the outer cleaning roller in a telescopic mode, an outer brush is arranged on the outer cleaning roller, an inner brush is arranged on the inner cleaning roller, and a telescopic piece for driving the inner cleaning roller to axially stretch out and draw back in the outer cleaning roller is arranged on the cleaning frame. The water spraying device comprises a main water spraying part and an auxiliary water spraying part, the telescopic part controls the auxiliary water spraying part and the inner cleaning roller to move synchronously, the surface of a large-scale photovoltaic panel can be effectively cleaned within a short time, and the effects of adjusting the single-time cleaning area and being high in cleaning efficiency are achieved.

Description

Technical Field

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

[0002] Atmospheric conditions and other environmental impacts continuously affect the state of photovoltaic power stations. Dirt and other types of contaminants deposited on the surface of the components can prevent or reduce direct sunlight, having a negative impact on the output of the system unit. The contamination of solar panels appears in different ways and forms and is not always visible to the naked eye. However, even the thinnest layer of dust and dirt, such as soot and pollen, together with bird droppings and leaves, can strongly affect the performance of the photovoltaic system. Moss and lichen are a serious risk as they attack the frame and module components, causing permanent damage to the plant. All these impurities pose a great risk to the efficiency of the photovoltaic system. If the individual unit parts of the module are soiled or covered, they may overheat. In the worst case, if the battery overheats and the module is damaged, the combustible materials under the module may catch fire. However, in most overheating cases, the long-term damage to the module leads to a decrease in performance and no fire occurs. If rainwater accumulates at the lower edge of the module (especially when the inclination of the module is low) and stays there for a long time, the moisture will enter the laminate and cause delamination problems. Generally speaking, the various cleaning techniques commonly used in the market can be divided into three major macro fields: manual cleaning, machine cleaning, and robot cleaning. When using a machine for cleaning, a vehicle (such as a tractor) is used to move the brush system. This greatly speeds up the cleaning process. Therefore, large-scale block surfaces can be cleaned very effectively in a short time.

[0003] The invention patent with the publication number CN116915163A discloses a photovoltaic panel cleaning device and a photovoltaic panel cleaning system. The photovoltaic panel cleaning device includes a moving mechanism, a roller, a cleaning mechanism, a water supply mechanism, and at least two cleaning cloths; the roller is rotatably arranged on the moving mechanism, and the cleaning cloths are arranged at intervals around the outer peripheral side of the roller. The cleaning cloths are used to contact the surface of the photovoltaic panel respectively. The moving mechanism drives a cleaning cloth to move through the roller to clean the surface of the photovoltaic panel; the roller rotates so that the cleaning cloth after cleaning the surface of the photovoltaic panel turns to the cleaning mechanism, and the cleaning mechanism moves towards the cleaning cloth after cleaning the surface of the photovoltaic panel to contact it and cleans the cleaning cloth in contact with the cleaning mechanism; the water supply mechanism is used to store water and cleaning agents and provide water and cleaning agents for the cleaning mechanism. Although this method can achieve mobile cleaning of the photovoltaic panel, for large-area photovoltaic panels, it needs to be cleaned back and forth multiple times, which takes a long time. At the same time, as the cleaning robot moves on the photovoltaic panel multiple times, the probability of damaging the surface of the photovoltaic panel increases. Summary of the Invention

[0004] The purpose of the present invention is to provide a photovoltaic panel cleaning device, which has the effects of adjusting the single - time cleaning area and high cleaning efficiency, and can effectively clean the surface of large - scale photovoltaic panels in a short time.

[0005] The above technical purpose of the present invention is achieved through the following technical solutions: A photovoltaic panel cleaning device includes a box body and a driving cart for driving the box body to move. A cleaning device and a water - spraying device are arranged at the front section of the box body. The cleaning device includes a cleaning frame, an outer cleaning roller and an inner cleaning roller rotatably connected to the cleaning frame. The outer cleaning roller is hollow - arranged, and the inner cleaning roller is movably and telescopically arranged inside the outer cleaning roller. Outer brushes are arranged on the outer cleaning roller, and inner brushes are arranged on the inner cleaning roller. A telescopic member for driving the inner cleaning roller to axially extend and contract inside the outer cleaning roller is arranged on the cleaning frame. The water - spraying device includes a main water - spraying member and a secondary water - spraying member, and the telescopic member controls the secondary water - spraying member to move synchronously with the inner cleaning roller.

[0006] By adopting the above technical solutions, the telescopic member can drive the secondary water - spraying member and the inner cleaning roller to synchronously extend and expand, which can increase the single - time cleaning width and can effectively clean the surface of large - scale photovoltaic panels in a short time.

[0007] The further setting of the present invention is as follows: The telescopic member includes a lead screw and a rotating disk. The rotating disk is rotatably arranged at the end of the outer cleaning roller, the lead screw is coaxially and fixedly connected to the rotating disk, the lead screw is thread - fixedly connected inside the inner cleaning roller, a limiting strip is axially arranged outside the inner cleaning roller, a limiting sliding groove is arranged inside the outer cleaning roller, and the limiting strip on the inner cleaning roller is axially slidably connected to the limiting sliding groove on the outer cleaning roller. The rotating disk controls the rotation of the lead screw to drive the inner cleaning roller to axially extend or contract along the outer cleaning roller.

[0008] By adopting the above technical solutions, by rotating the rotating disk, the rotating disk will drive the lead screw to rotate. The lead screw is thread - connected to the inner cleaning roller, and the inner cleaning roller axially slides in the limiting sliding groove through the limiting strip. Therefore, when the lead screw rotates, the inner cleaning roller will extend out of the outer cleaning roller to extend the cleaning length.

[0009] A further setting of the present invention is that the inner brush is movably and telescopically arranged in the inner brush through an adjusting member. The adjusting member includes a telescopic rod, a connecting disc, and a brush rod. A brush hole for the inner brush to extend out from the inner cleaning roller is provided on the inner cleaning roller. A plurality of the connecting discs are coaxially arranged on the telescopic rod, and the plurality of connecting discs are arranged parallel to each other. One end of the brush rod is rotatably connected to the connecting disc, and the other end is rotatably connected to the end of the brush hole. The inner brush is connected to the end of the brush rod. The telescopic rod is axially arranged inside the inner cleaning roller. An unfolding control member is arranged between the end of the telescopic rod and the inner cleaning roller. The unfolding control member drives the telescopic rod to axially move to drive the inner brush to extend out or retract from the brush hole.

[0010] A further setting of the present invention is that the unfolding control member includes a control piece, a control spring, and a control block. The control piece is rotatably connected to the end of the inner cleaning roller. One end of the control piece abuts against the end of the telescopic rod. A control block is arranged inside the outer cleaning roller. During the movement of the inner cleaning roller, the inner cleaning roller drives the control piece to abut against the control block, and the control block drives the control piece to push the telescopic rod to axially move. A control spring is connected between the end of the telescopic rod and the end of the inner cleaning roller, and the control spring drives the telescopic rod to keep in contact with the control piece.

[0011] A further setting of the present invention is that two control blocks are provided. The two control blocks are respectively arranged at both ends of the inner arm of the outer cleaning roller. The one close to the bottom of the outer cleaning roller is the first control block, and the one far from the bottom of the outer cleaning roller is the second control block.

[0012] When the inner cleaning roller gradually extends outwards, at this time, the elastic force of the control spring will push the telescopic rod to drive the inner brush to remain in a retracted state. When the inner cleaning roller drives the adjusting piece to move to the second control block, at this time, the second control block will play a blocking role on the control piece, causing the control piece to rotate around the inner cleaning roller. The other end of the control piece will push the telescopic rod to move so that the inner brush extends out from the brush hole. At this time, the control spring is compressed. When the inner cleaning roller retracts, the end of the control piece leaves the second control block to lose its limitation, and the control spring rebounds to push the telescopic rod to drive the inner brush to retract. When the control piece moves to the first control block, the first control block blocks the control piece to prevent the inner cleaning roller from continuing to retract. This method can realize the automatic unfolding and contraction process of the inner brush, and can avoid the problems of the brush breaking or deforming during the retraction or unfolding process of the inner cleaning roller.

[0013] A further setting of the present invention is that the main water spraying member includes a main water spraying frame, a main water spraying pipe, and main nozzles. The main water spraying frame is arranged in front of the box body. The main water spraying pipe is connected to the main water spraying frame. A plurality of the main nozzles are connected to the end of the main water spraying pipe. The auxiliary water spraying member includes an auxiliary water spraying frame, an auxiliary water spraying pipe, and auxiliary nozzles. The auxiliary water spraying frame is slidably arranged on the main water spraying frame. The auxiliary water spraying pipe is connected to the auxiliary water spraying frame. A plurality of the auxiliary nozzles are connected to the end of the auxiliary water spraying pipe. The auxiliary water spraying frame is connected to the cleaning frame.

[0014] By adopting the above technical solution, when the inner cleaning roller extends, it will drive the cleaning frame to also extend. At the same time, the cleaning frame will move along the main water spraying frame through the auxiliary water spraying frame, increasing the water spraying width of the water spraying device and realizing the synchronous expansion of water spraying and cleaning.

[0015] A further setting of the present invention is that a switch member is arranged on the auxiliary water spraying pipe. The switch member includes a left opening and closing member, a right opening and closing member, and an opening and closing driving member. The left opening and closing member includes a left opening and closing plate and a left opening and closing rod. The right opening and closing member includes a right opening and closing plate and a right opening and closing sleeve. The left opening and closing rod is rotatably connected inside the right opening and closing sleeve. Both ends of the left opening and closing rod are rotatably connected inside the auxiliary water spraying pipe. The opening and closing driving member drives the left opening and closing plate and the right opening and closing plate to rotate coaxially.

[0016] A further setting of the present invention is that the opening and closing driving member includes a guiding frame, a driving block, and a pull rod member. The guiding frame is arranged on the auxiliary water spraying pipe. The driving block is slidably clamped inside the guiding frame. A left rotating arm is radially and fixedly arranged at the end of the left opening and closing rod. The left rotating arm is rotatably connected to the driving block. A right rotating arm is radially and fixedly arranged at the end of the right opening and closing sleeve. The right rotating arm is rotatably connected to the other side of the driving block. The pull rod member is connected to the driving block. The pull rod member pulls the driving block to move along the guiding frame.

[0017] A further setting of the present invention is that the pull rod member is a telescopic sleeve rod. The end of the pull rod member is rotatably connected to the driving block.

[0018] By adopting the above technical solution, when the auxiliary water spraying frame moves in the extending direction, it will elongate the telescopic sleeve rod. At the same time, when it continues to extend, it will pull the driving block to move along the guiding frame. Since the left rotating arm is rotatably connected to the driving block, the right rotating arm is rotatably connected to the other side of the driving block, and the directions of the left rotating arm and the right rotating arm are opposite. Therefore, when the driving block moves, it will drive the two left opening and closing plates and the right opening and closing plates to rotate coaxially, so that the auxiliary water spraying pipe is opened to let water through. When the auxiliary water spraying frame retracts, the sleeve rod shortens. After shortening to a certain distance, it will push the driving block to move forward along the guiding frame, so that the auxiliary water spraying pipe is closed to let water through, and only the main water spraying pipe performs the water spraying process. This method can realize the active water passing process of the auxiliary water spraying pipe, and this process can be synchronized with the inner cleaning roller.

[0019] The beneficial effects of the present invention are as follows: 1. The telescopic member in the present invention can drive the auxiliary water spraying member to extend and expand synchronously with the inner cleaning roller, which can increase the single cleaning width and can effectively clean the surface of a large-scale photovoltaic panel in a short time. By rotating the rotating disc, the rotating disc will drive the lead screw to rotate. The lead screw is threadedly connected to the inner cleaning roller, and the inner cleaning roller axially slides in the limiting chute through the limiting strip. Therefore, when the lead screw rotates, the inner cleaning roller will extend out of the outer cleaning roller to extend the cleaning length.

[0020] 2. When the inner cleaning roller gradually extends outwards, at this time, the elastic force of the control spring will push the telescopic rod to drive the inner brush to maintain a retracted state. When the inner cleaning roller drives the adjusting piece to move to the second control block, at this time, the second control block will hinder the control piece, so that the control piece will rotate around the inner cleaning roller, and the other end of the control piece will push the telescopic rod to move so that the inner brush extends out of the brush hole. At this time, the control spring is compressed. When the inner cleaning roller retracts, the end of the control piece leaves the second control block to lose its limitation, and the control spring rebounds to push the telescopic rod to drive the inner brush to retract. When the control piece moves to the first control block, the first control block blocks the control piece so that the inner cleaning roller cannot continue to retract. This method can realize the automatic unfolding and retracting process of the inner brush, and can avoid the problems of the brush breaking or deforming during the retraction or unfolding process of the inner cleaning roller.

[0021] 3. When the inner cleaning roller extends, it will drive the cleaning frame to extend as well. At the same time, the cleaning frame will move along the main water spraying frame through the secondary water spraying frame, increasing the water spraying width of the water spraying device and realizing the synchronous expansion of water spraying and cleaning. When the secondary water spraying frame extends, it will stretch the telescopic sleeve rod, and when it continues to extend, it will pull the driving block to move along the guiding frame. Since the left rotating arm is rotatably connected to the driving block and the right rotating arm is rotatably connected to the other side of the driving block, and the directions of the left rotating arm and the right rotating arm are opposite, when the driving block moves, it will drive the two left opening and closing plates and the right opening and closing plates to rotate coaxially, opening the secondary water spraying pipe to let water through. When the secondary water spraying frame retracts, the sleeve rod shortens. After shortening to a certain distance, it will push the driving block to move forward along the guiding frame, closing the secondary water spraying pipe to stop water flow, and only the main water spraying pipe will perform the water spraying process. This method can realize the active water supply process of the secondary water spraying pipe, and this process can be synchronized with the inner cleaning roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0023] Figure 1 It is a schematic structural diagram of the present invention.

[0024] Figure 2 It is a schematic structural diagram of the cleaning device of the present invention.

[0025] Figure 3 It is a schematic cross-sectional structural diagram of the cleaning device in the present invention.

[0026] Figure 4 It is another schematic cross-sectional structural diagram of the cleaning device in the present invention.

[0027] Figure 5 It is a schematic structural diagram of the inner cleaning roller of the cleaning device in the present invention.

[0028] Figure 6 It is a partial schematic diagram of the adjusting member in the present invention.

[0029] Figure 7 It is a schematic structural diagram of the water spraying device in the present invention.

[0030] Figure 8 It is a front view structural diagram of the water spraying device in the present invention.

[0031] Figure 9 It is a schematic internal structure diagram of the switch member in the present invention.

[0032] Figure 10It is a schematic diagram of the explosion structure of the switch part in the present invention.

[0033] In the figure, 1 is the box body; 2 is the driving trolley; 3 is the cleaning device; 31 is the cleaning rack; 32 is the outer cleaning roller; 321 is the outer brush; 33 is the inner cleaning roller; 331 is the inner brush; 332 is the brush hole; 34 is the lead screw; 35 is the rotating disk; 4 is the adjusting part; 41 is the telescopic rod; 42 is the connecting disk; 43 is the brush rod; 44 is the control piece; 45 is the control spring; 46 is the first control block; 47 is the second control block; 5 is the water spraying device; 51 is the main water spraying part; 511 is the main water spraying rack; 512 is the main water spraying pipe; 513 is the main nozzle; 52 is the auxiliary water spraying part; 521 is the auxiliary water spraying rack; 522 is the auxiliary water spraying pipe; 523 is the auxiliary nozzle; 6 is the switch part; 61 is the left opening and closing plate; 62 is the left opening and closing rod; 621 is the left rotating arm; 63 is the right opening and closing plate; 64 is the right opening and closing sleeve; 641 is the right rotating arm; 65 is the guiding frame; 66 is the driving block; 67 is the pull rod part. Detailed implementation manners

[0034] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with specific embodiments. 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 of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0035] Embodiment, as Figure 1 、 Figure 2 、 Figure 3 、 Figure 7 shown, a photovoltaic panel cleaning device 3 includes a box body 1 and a driving trolley 2 for driving the box body 1 to move. A cleaning device 3 and a water spraying device 5 are arranged at the front section of the box body 1. The cleaning device 3 includes a cleaning rack 31, an outer cleaning roller 32 and an inner cleaning roller 33 rotatably connected to the cleaning rack 31. The outer cleaning roller 32 is provided with a hollow interior, and the inner cleaning roller 33 is movably and telescopically arranged inside the outer cleaning roller 32. An outer brush 321 is arranged on the outer cleaning roller 32, and an inner brush 331 is arranged on the inner cleaning roller 33. A telescopic member for driving the inner cleaning roller 33 to axially expand and contract inside the outer cleaning roller 32 is arranged on the cleaning rack 31. The water spraying device 5 includes a main water spraying part 51 and an auxiliary water spraying part 52, and the telescopic member controls the auxiliary water spraying part 52 to move synchronously with the inner cleaning roller 33.

[0036] As Figure 1 、 Figure 7 shown, the telescopic member can drive the auxiliary water spraying part 52 and the inner cleaning roller 33 to synchronously extend and expand, which can increase the single cleaning width and can effectively clean the surface of a large-scale photovoltaic panel in a short time.

[0037] As shown in Figure 2 and Figure 3 , the telescopic member includes a lead screw 34 and a rotating disk 35. The rotating disk 35 is rotatably arranged at the end of the outer cleaning roller 32. The lead screw 34 is coaxially and fixedly connected to the rotating disk 35. The lead screw 34 is threadedly and fixedly connected inside the inner cleaning roller 33. A limiting strip is axially arranged outside the inner cleaning roller 33, and a limiting chute is arranged inside the outer cleaning roller 32. The limiting strip on the inner cleaning roller 33 is axially slidably connected in the limiting chute on the outer cleaning roller 32. The rotating disk 35 controls the rotation of the lead screw 34 to drive the inner cleaning roller 33 to axially extend or shorten along the outer cleaning roller 32.

[0038] As shown in Figure 3 and Figure 5 , by rotating the rotating disk 35, the rotating disk 35 will drive the lead screw 34 to rotate. The lead screw 34 is threadedly connected to the inner cleaning roller 33, and the inner cleaning roller 33 axially slides in the limiting chute through the limiting strip. Therefore, when the lead screw 34 rotates, the inner cleaning roller 33 will extend out of the outer cleaning roller 32 to extend the cleaning length.

[0039] As shown in Figure 4 , Figure 5 , Figure 6 , the inner brush 331 is telescopically arranged in the inner cleaning roller 331 through an adjusting member 4. The adjusting member 4 includes a telescopic rod 41, a connecting disk 42, and a brush rod 43. A brush hole 332 for the inner brush 331 to extend out of the inner cleaning roller 33 is formed in the inner cleaning roller 33. A plurality of the connecting disks 42 are coaxially arranged on the telescopic rod 41. The plurality of connecting disks 42 are arranged parallel to each other. One end of the brush rod 43 is rotatably connected to the connecting disk 42, and the other end is rotatably connected to the end of the brush hole 332. The inner brush 331 is connected to the end of the brush rod 43. The telescopic rod 41 is axially arranged inside the inner cleaning roller 33. An unfolding control member is arranged between the end of the telescopic rod 41 and the inner cleaning roller 33. The unfolding control member drives the telescopic rod 41 to axially move to drive the inner brush 331 to extend out of or retract into the brush hole 332.

[0040] As shown in Figure 4 and Figure 5 , Figure 6As shown, the unfolding control member includes a control piece 44, a control spring 45 and a control block. The control piece 44 is rotatably connected to the end of the inner cleaning roller 33. One end of the control piece 44 abuts against the end of the telescopic rod 41. A control block is arranged inside the outer cleaning roller 32. During the movement of the inner cleaning roller 33, the inner cleaning roller 33 drives the control piece 44 to abut against the control block, and the control block drives the control piece 44 to push the telescopic rod 41 to move axially. A control spring 45 is connected between the end of the telescopic rod 41 and the end of the inner cleaning roller 33, and the control spring 45 drives the telescopic rod 41 to keep in contact with the control piece 44.

[0041] As shown in FIG. 4, there are two control blocks. The two control blocks are respectively arranged at both ends of the inner arm of the outer cleaning roller 32. The first control block 46 is close to the bottom of the outer cleaning roller 32, and the second control block 47 is far from the bottom of the outer cleaning roller 32.

[0042] When the inner cleaning roller 33 gradually extends outwards, at this time, the elastic force of the control spring 45 will push the telescopic rod 41 to drive the inner brush 331 to remain in a retracted state. When the inner cleaning roller 33 drives the adjusting piece to move to the second control block 47, at this time, the second control block 47 will hinder the control piece 44, so that the control piece 44 will rotate around the inner cleaning roller 33, and the other end of the control piece 44 will push the telescopic rod 41 to move so that the inner brush 331 extends out of the brush hole 332. At this time, the control spring 45 is compressed. When the inner cleaning roller 33 retracts, the end of the control piece 44 leaves the second control block 47 to lose its limitation, and the control spring 45 rebounds to push the telescopic rod 41 to drive the inner brush 331 to retract. When the control piece 44 moves to the first control block 46, the first control block 46 blocks the control piece 44 so that the inner cleaning roller 33 cannot continue to retract. This method can realize the automatic unfolding and contraction process of the inner brush 331, and can avoid the problems of the brush breaking or deforming during the retraction or unfolding of the inner cleaning roller.

[0043] As Figure 7 、 Figure 8 shown, the main water spraying member 51 includes a main water spraying frame 511, a main water spraying pipe 512 and a main water spraying head 513. The main water spraying frame 511 is arranged in front of the box body 1. The main water spraying pipe 512 is connected to the main water spraying frame 511. A plurality of main water spraying heads 513 are connected to the end of the main water spraying pipe 512. The auxiliary water spraying member 52 includes an auxiliary water spraying frame 521, an auxiliary water spraying pipe 522 and an auxiliary water spraying head 523. The auxiliary water spraying frame 521 is slidably arranged on the main water spraying frame 511. The auxiliary water spraying pipe 522 is connected to the auxiliary water spraying frame 521. A plurality of auxiliary water spraying heads 523 are connected to the end of the auxiliary water spraying pipe 522. The auxiliary water spraying frame 521 is connected to the cleaning frame 31.

[0044] When the inner cleaning roller 33 extends, it will drive the cleaning frame to extend as well. At the same time, the cleaning frame will move along the main water spraying frame 511 through the secondary water spraying frame 521, increasing the water spraying width of the water spraying device 5 and realizing the synchronous expansion of water spraying and cleaning.

[0045] As Figure 9 、 Figure 10 shown, a switch member 6 is provided on the secondary water spraying pipe 522. The switch member 6 includes a left opening and closing member, a right opening and closing member, and an opening and closing driving member. The left opening and closing member includes a left opening and closing plate 61 and a left opening and closing rod 62. The right opening and closing member includes a right opening and closing plate 63 and a right opening and closing sleeve 64. The left opening and closing rod 62 is rotatably connected within the left opening and closing sleeve, and both ends of the left opening and closing rod 62 are rotatably connected within the secondary water spraying pipe 522. The opening and closing driving member drives the left opening and closing plate 61 and the right opening and closing plate 63 to rotate coaxially.

[0046] As Figure 9 、 Figure 10 shown, the opening and closing driving member includes a guiding frame 65, a driving block 66, and a pull rod member 67. The guiding frame 65 is provided on the secondary water spraying pipe 522. The driving block 66 is slidably clamped inside the guiding frame 65. A left rotating arm 621 is radially and fixedly provided at the end of the left opening and closing rod 62, and the left rotating arm 621 is rotatably connected to the driving block 66. A right rotating arm 641 is radially and fixedly provided at the end of the right opening and closing sleeve 64, and the right rotating arm 641 is rotatably connected to the other side of the driving block 66. The pull rod member 67 is connected to the driving block 66, and the pull rod member 67 pulls the driving block 66 to move along the guiding frame 65.

[0047] As Figure 9 、 Figure 10 shown, the pull rod member 67 is a telescopic sleeve rod, and the end of the pull rod member 67 is rotatably connected to the driving block 66.

[0048] When the secondary water spraying frame 521 extends, it will elongate the telescopic sleeve rod. At the same time, continuous extension will pull the driving block 66 to move along the guiding frame 65. Since the left rotating arm 621 is rotatably connected to the driving block 66, the right rotating arm 641 is rotatably connected to the other side of the driving block 66, and the directions of the left rotating arm 621 and the right rotating arm 641 are opposite, therefore, when the driving block 66 moves, it will drive the two left opening and closing plates 61 and the right opening and closing plate 63 to rotate coaxially, opening the secondary water spraying pipe 522 to let water through. When the secondary water spraying frame 521 retracts, the sleeve rod shortens. After shortening to a certain distance, it will push the driving block 66 to move forward along the guiding frame 65, closing the secondary water spraying pipe 522 to stop water flow, and only the main water spraying pipe 512 will perform the water spraying process. This method can realize the active water flow process of the secondary water spraying pipe 522, and this process can be synchronized with the inner cleaning roller.

[0049] In the present invention, the telescopic member can drive the secondary water spraying member 52 to synchronously extend and expand with the inner cleaning roller 33, which can increase the single cleaning width and effectively clean the surface of large-scale photovoltaic panels in a short time. By rotating the rotating disk 35, the rotating disk 35 drives the lead screw 34 to rotate. The lead screw 34 is threadedly connected to the inner cleaning roller 33, and the inner cleaning roller 33 axially slides in the limit chute through the limit strip. Therefore, when the lead screw 34 rotates, the inner cleaning roller 33 extends out of the outer cleaning roller 32, extending the cleaning length. When the inner cleaning roller 33 extends, it drives the cleaning frame to also extend. At the same time, the cleaning frame moves along the main water spraying frame 511 through the secondary water spraying frame 521, increasing the water spraying width of the water spraying device 5 and realizing the synchronous development of water spraying and cleaning.

Claims

1. A photovoltaic panel cleaning device, comprising a box body (1) and a driving trolley (2) for driving the movement of the box body (1), characterized in that: A cleaning device (3) and a water spraying device (5) are arranged at the front section of the box body (1). The cleaning device (3) comprises a cleaning frame (31), an outer cleaning roller (32) and an inner cleaning roller (33) rotatably connected to the cleaning frame (31). The outer cleaning roller (32) is hollow, and the inner cleaning roller (33) is movably and telescopically arranged inside the outer cleaning roller (32). An outer brush (321) is arranged on the outer cleaning roller (32), and an inner brush (331) is arranged on the inner cleaning roller (33). A telescopic member for driving the inner cleaning roller (33) to axially extend and retract inside the outer cleaning roller (32) is arranged on the cleaning frame (31). The water spraying device (5) comprises a main water spraying member (51) and a secondary water spraying member (52), and the telescopic member controls the secondary water spraying member (52) to move synchronously with the inner cleaning roller (33).

2. The photovoltaic panel cleaning device according to claim 1, wherein: The telescopic member comprises a lead screw (34) and a rotating disc (35). The rotating disc (35) is rotatably arranged at the end of the outer cleaning roller (32). The lead screw (34) is coaxially and fixedly connected to the rotating disc (35). The lead screw (34) is threadedly and fixedly connected inside the inner cleaning roller (33). A limiting strip is axially arranged outside the inner cleaning roller (33), and a limiting sliding groove is arranged inside the outer cleaning roller (32). The limiting strip on the inner cleaning roller (33) is axially slidably connected to the limiting sliding groove in the outer cleaning roller (32). The rotating disc (35) controls the lead screw (34) to rotate to drive the inner cleaning roller (33) to axially extend or shorten along the outer cleaning roller (32).

3. The photovoltaic panel cleaning device according to claim 2, characterized in that: The inner brush (331) is movably and telescopically arranged inside the inner brush (331) through an adjusting member (4). The adjusting member (4) comprises a telescopic rod (41), a connecting disc (42) and a brush rod (43). A brush hole (332) for the inner brush (331) to extend out from inside the inner cleaning roller (33) is formed in the inner cleaning roller (33). A plurality of the connecting discs (42) are coaxially arranged on the telescopic rod (41), and the plurality of the connecting discs (42) are arranged in parallel with each other. One end of the brush rod (43) is rotatably connected to the connecting disc (42), and the other end is rotatably connected to the end of the brush hole (332). The inner brush (331) is connected to the end of the brush rod (43). The telescopic rod (41) is axially arranged inside the inner cleaning roller (33), and an unfolding control member is arranged between the end of the telescopic rod (41) and the inner cleaning roller (33). The unfolding control member drives the telescopic rod (41) to axially move to drive the inner brush (331) to extend out from or retract into the brush hole (332).

4. The photovoltaic panel cleaning device according to claim 3, wherein: The unfolding control member includes a control piece (44), a control spring (45) and a control block. The control piece (44) is rotatably connected to the end of the inner cleaning roller (33). One end of the control piece (44) abuts against the end of the telescopic rod (41). A control block is arranged inside the outer cleaning roller (32). During the movement of the inner cleaning roller (33), the inner cleaning roller (33) drives the control piece (44) to abut against the control block, and the control block drives the control piece (44) to push the telescopic rod (41) to move axially. A control spring (45) is connected between the end of the telescopic rod (41) and the end of the inner cleaning roller (33), and the control spring (45) drives the telescopic rod (41) to keep in contact with the control piece (44).

5. The photovoltaic panel cleaning device according to claim 4, wherein: Two control blocks are provided. The two control blocks are respectively arranged at both ends of the inner arm of the outer cleaning roller (32). The first control block (46) is close to the bottom of the outer cleaning roller (32), and the second control block (47) is far from the bottom of the outer cleaning roller (32).

6. The photovoltaic panel cleaning device according to claim 5, wherein: When the inner cleaning roller (33) gradually extends outwards, the elastic force of the control spring (45) at this time will push the telescopic rod (41) to drive the inner brush (331) to maintain a retracted state. When the inner cleaning roller (33) drives the adjusting piece to move to the second control block (47), the second control block (47) will play a blocking role on the control piece (44) at this time, so that the control piece (44) will rotate around the inner cleaning roller (33). The other end of the control piece (44) will push the telescopic rod (41) to move so that the inner brush (331) extends out of the brush hole (332). At this time, the control spring (45) is compressed. When the inner cleaning roller (33) retracts, the end of the control piece (44) leaves the second control block (47) to lose its limitation, and the control spring (45) rebounds to push the telescopic rod (41) to drive the inner brush (331) to retract. When the control piece (44) moves to the first control block (46), the first control block (46) blocks the control piece (44) so that the inner cleaning roller (33) cannot continue to retract.

7. A photovoltaic panel cleaning device according to claim 1, characterized in that: The main water spraying member (51) includes a main water spraying frame (511), a main water spraying pipe (512) and a main water spraying head (513). The main water spraying frame (511) is arranged in front of the box body (1). The main water spraying pipe (512) is connected to the main water spraying frame (511). A plurality of the main water spraying heads (513) are connected to the end of the main water spraying pipe (512). The auxiliary water spraying member (52) includes an auxiliary water spraying frame (521), an auxiliary water spraying pipe (522) and an auxiliary water spraying head (523). The auxiliary water spraying frame (521) is slidably arranged on the main water spraying frame (511). The auxiliary water spraying pipe (522) is connected to the auxiliary water spraying frame (521). A plurality of the auxiliary water spraying heads (523) are connected to the end of the auxiliary water spraying pipe (522). The auxiliary water spraying frame (521) is connected to the cleaning frame (31).

8. The photovoltaic panel cleaning device according to claim 7, wherein: A switch member (6) is provided on the auxiliary spray water pipe (522). The switch member (6) includes a left opening and closing member, a right opening and closing member, and an opening and closing driving member. The left opening and closing member includes a left opening and closing plate (61) and a left opening and closing rod (62). The right opening and closing member includes a right opening and closing plate (63) and a right opening and closing sleeve (64). The left opening and closing rod (62) is rotatably connected within the left opening and closing sleeve. Both ends of the left opening and closing rod (62) are rotatably connected within the auxiliary spray water pipe (522). The opening and closing driving member drives the left opening and closing plate (61) and the right opening and closing plate (63) to rotate coaxially.

9. The photovoltaic panel cleaning device according to claim 8, characterized in that: The opening and closing driving member includes a guiding frame (65), a driving block (66), and a pull rod member (67). The guiding frame (65) is provided on the auxiliary spray water pipe (522). The driving block (66) is slidably clamped inside the guiding frame (65). A left rotating arm (621) is radially and fixedly provided at the end of the left opening and closing rod (62). The left rotating arm (621) is rotatably connected to the driving block (66). A right rotating arm (641) is radially and fixedly provided at the end of the right opening and closing sleeve (64). The right rotating arm (641) is rotatably connected to the other side of the driving block (66). The pull rod member (67) is connected to the driving block (66). The pull rod member (67) pulls the driving block (66) to move along the guiding frame (65).

10. The photovoltaic panel cleaning device according to claim 9, characterized in that: The pull rod member (67) is a telescopic sleeve rod. The end of the pull rod member (67) is rotatably connected to the driving block (66).

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