Photovoltaic panel cleaning mechanism and cleaning robot

Abstract

The photovoltaic panel cleaning mechanism comprises a cleaning brush, a lifting frame, a fixing frame, a motor and a driving mechanism, the driving mechanism is connected with the lifting frame and the fixing frame and drives the lifting frame to move up and down relative to the fixing frame, the cleaning brush is rotationally connected with the lifting frame, and the motor drives the cleaning brush to move up and down relative to the fixing frame. The motor is installed on the lifting frame and drives the cleaning brush to rotate relative to the lifting frame. The driving mechanism drives the lifting frame to move downwards so as to apply enough pressure to the cleaning brush, so that the weight of the crawler-type robot can be lighter, and the number of hidden cracks of a photovoltaic panel semiconductor is reduced; and when the cleaning operation is not carried out, the driving mechanism drives the lifting frame to ascend, so that the cleaning brush is separated from the photovoltaic panel, the resistance of the crawler-type robot during movement is reduced, the power consumption is further reduced, and the endurance is improved.

Description

Technical Field

[0001] The utility model relates to the field of photovoltaic panel cleaning equipment, in particular to a photovoltaic panel cleaning mechanism and a cleaning robot. Background Art

[0002] Since photovoltaic panels are placed in the open air, dust and other attachments will adhere to the surface of the panels after long-term use. These attachments will block light, thereby reducing the power generation efficiency of the photovoltaic panels.

[0003] Currently, photovoltaic panels can be cleaned by using a robot-driven cleaning brush that moves across the panel surface. The bristles of the disc cleaning brush contact the panel, and the brush rotates with its axis roughly perpendicular to the panel, removing debris from the panel surface as it rotates.

[0004] When cleaning, in order to increase the contact area between the cleaning brush bristles and the photovoltaic panel and the ability to remove strongly adhered attachments, downward pressure needs to be applied to the cleaning brush.

[0005] Existing robots are large and heavy, and their own weight alone can provide sufficient downward pressure on the cleaning brush. If the robot's weight were too low, it wouldn't be able to exert sufficient downward pressure on the brush, resulting in poor cleaning results. Therefore, existing robots used to clean photovoltaic panels are designed to be heavy to ensure sufficient downward pressure on the brush, thereby ensuring effective cleaning.

[0006] However, heavier robots can easily cause hidden cracks in the semiconductors inside photovoltaic panels, resulting in a decrease in the panels' power generation efficiency.

[0007] Moreover, when the existing robot is not cleaning, the bristles of the cleaning brush are still in contact with the surface of the photovoltaic panel, which increases the resistance of the robot when it moves, thereby increasing the robot's power consumption and reducing the robot's endurance. Utility Model Content

[0008] The utility model aims to solve the above problems and provides a photovoltaic panel cleaning mechanism and a cleaning robot to solve the above problems.

[0009] A photovoltaic panel cleaning mechanism includes: a cleaning brush, a lifting frame, a fixed frame, a motor and a driving mechanism, wherein the driving mechanism is connected to the lifting frame and the fixed frame respectively, and the driving mechanism drives the lifting frame to move up and down relative to the fixed frame. The cleaning brush is rotatably connected to the lifting frame, and the motor is installed on the lifting frame, and the motor drives the cleaning brush to rotate relative to the lifting frame.

[0010] Furthermore, the driving mechanism is an electric push rod, the cylinder of the driving mechanism is fixedly connected to the fixing frame, and the push rod of the driving mechanism is fixedly connected to the lifting frame.

[0011] Furthermore, the lifting frame is connected to two cleaning brushes, and the two cleaning brushes rotate in opposite directions but have the same rotation speed.

[0012] Furthermore, it also includes a first gear, a second gear, a first rotating shaft and a second rotating shaft. The housing of the motor is fixed relative to the lifting frame, the output shaft of the motor is fixedly connected to the first rotating shaft, the first rotating shaft is rotatably connected to the lifting frame, the first rotating shaft is fixedly connected to the first gear, the first gear is meshed with the second gear, the second gear is fixedly connected to the second rotating shaft, the second rotating shaft is rotatably connected to the lifting frame, and the first rotating shaft and the second rotating shaft respectively drive different cleaning brushes to rotate.

[0013] Furthermore, it also includes a first sprocket, a second sprocket and a third sprocket, the rotating shaft of the cleaning brush is rotatably connected to the lifting frame, the rotating shaft is fixedly connected to the second sprocket, the first rotating shaft is fixedly connected to the first sprocket, the first sprocket drives a second sprocket to rotate through a first chain, the second rotating shaft is fixedly connected to the third sprocket, and the third sprocket drives another second sprocket to rotate through the second chain.

[0014] Furthermore, it also includes a sliding rod and a linear bearing, the sliding rod is fixedly connected to the lifting frame, the linear bearing is fixedly connected to the fixing frame, and the sliding rod passes through the linear bearing and is connected to the linear bearing.

[0015] Furthermore, the cleaning brush includes first bristles, second bristles, a base plate and a rotating shaft, the rotating shaft is fixedly connected to the base plate, the upper end of the first bristles and the upper end of the second bristles are respectively fixedly connected to the base plate, the stiffness of the first bristles is greater than the stiffness of the second bristles, and the distance from the first bristles to the rotating shaft is greater than the distance from the second bristles to the rotating shaft.

[0016] Furthermore, the first bristles are arranged in a circle around the rotation axis of the substrate, and the second bristles are arranged in a circle around the rotation axis of the substrate.

[0017] Furthermore, an included angle α between the first bristles and the rotation axis of the substrate is 125 degrees to 135 degrees, and an included angle β between the second bristles and the rotation axis of the substrate is 120 degrees to 130 degrees.

[0018] A cleaning robot using the photovoltaic panel cleaning mechanism also includes a crawler robot, wherein the housing of the crawler robot is fixedly connected to a fixing frame.

[0019] The utility model has the following advantages:

[0020] 1. The driving mechanism drives the lifting frame downward, thereby applying sufficient pressure to the cleaning brush, making the crawler robot lighter and reducing the number of hidden cracks in the photovoltaic panel semiconductor;

[0021] 2. When not cleaning, the driving mechanism drives the lifting frame to rise, so that the cleaning brush is out of contact with the photovoltaic panel, reducing the resistance of the crawler robot during movement, thereby reducing power consumption and improving battery life;

[0022] 3. The first bristles with greater rigidity are better at cleaning objects with stronger adhesion, while the second bristles with less rigidity are better at cleaning loose dust. Using both the first and second bristles simultaneously can achieve better cleaning results than the existing technology that uses only a single rigidity bristle.

[0023] 4. Since the first bristles and the second bristles are used at the same time, the overall stiffness of the bristles is lower than that of the existing technology that only uses harder bristles. Under the same downward pressure, the contact area between the first bristles and the photovoltaic panel is increased, thereby improving the cleaning effect and preventing the track part of the crawler robot from being out of contact with the photovoltaic panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only one embodiment of the present invention. For those skilled in the art, other implementation drawings can be derived from the provided drawings without inventive effort.

[0025] Figure 1 : A schematic diagram of the top structure of the utility model;

[0026] Figure 2 :exist Figure 1 Schematic diagram of the cross-sectional structure at AA in the middle;

[0027] Figure 3 : Schematic diagram of the three-dimensional structure of the utility model;

[0028] Figure 4 : Schematic diagram of the cross-sectional structure of the cleaning brush. DETAILED DESCRIPTION

[0029] The present invention will be further described below with reference to the accompanying drawings and examples:

[0030] The following describes in detail embodiments of the present invention. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0031] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0032] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] like Figures 1 to 4 As shown, a photovoltaic panel cleaning mechanism includes: a cleaning brush 1, a lifting frame 3, a fixing frame 4, a motor 31 and a driving mechanism 41. The driving mechanism 41 is connected to the lifting frame 3 and the fixing frame 4 respectively. The driving mechanism 41 drives the lifting frame 3 to move up and down relative to the fixing frame 4. The cleaning brush 1 is rotatably connected to the lifting frame 3. The motor 31 is installed on the lifting frame 3. The motor 31 drives the cleaning brush 1 to rotate relative to the lifting frame 3.

[0034] During cleaning, after the cleaning brush 1 contacts the photovoltaic panel 9, the driving mechanism 41 continues to drive the lifting frame 3 and the cleaning brush 1 to descend synchronously to a certain height, after which the driving mechanism stops, thereby pressing the cleaning brush 1 against the photovoltaic panel 9. The driving mechanism 41 applies a certain downward pressure to the cleaning brush 1, causing the bristles to elastically deform, allowing the side surfaces of the bristles to contact the photovoltaic panel 9.

[0035] Furthermore, the driving mechanism 41 is an electric push rod, the cylinder of the driving mechanism 41 is fixedly connected to the fixing frame 4, and the push rod of the driving mechanism 41 is fixedly connected to the lifting frame 3. The electric push rod is small in size and does not require an additional air pump, which can reduce the weight of the entire cleaning mechanism.

[0036] Furthermore, the lifting frame 3 is connected to two cleaning brushes 1, and the two cleaning brushes 1 rotate in opposite directions but at the same speed. Such an arrangement has a better cleaning effect.

[0037] Furthermore, the motor 31 further includes a first gear 35, a second gear 36, a first rotating shaft 38, and a second rotating shaft 39. The housing of the motor 31 is fixed relative to the lifting frame 3. The output shaft of the motor 31 is fixedly connected to the first rotating shaft 38. The first rotating shaft 38 is rotatably connected to the lifting frame 3. The first rotating shaft 38 is fixedly connected to the first gear 35. The first gear 35 meshes with the second gear 36. The second gear 36 is fixedly connected to the second rotating shaft 39. The second rotating shaft 39 is rotatably connected to the lifting frame 3. The first rotating shaft 38 and the second rotating shaft 39 respectively drive different cleaning brushes 1 to rotate. The first rotating shaft 38 and the second rotating shaft 39 rotate in opposite directions, thereby driving the two cleaning brushes 1 to rotate in opposite directions.

[0038] Furthermore, it also includes a first sprocket 33, a second sprocket 34 and a third sprocket 37. The rotating shaft 14 of the cleaning brush 1 is rotatably connected to the lifting frame 3, the rotating shaft 14 is fixedly connected to the second sprocket 34, the first rotating shaft 38 is fixedly connected to the first sprocket 33, the first sprocket 33 drives a second sprocket 34 to rotate through a first chain, the second rotating shaft 39 is fixedly connected to the third sprocket 37, and the third sprocket 37 drives another second sprocket 34 to rotate through a second chain.

[0039] Furthermore, the lifting frame 3 includes a slide bar 32 and a linear bearing 42. The slide bar 32 is fixedly connected to the lifting frame 3, and the linear bearing 42 is fixedly connected to the fixed frame 4. The slide bar 32 passes through the linear bearing 42 and is connected to the linear bearing 42. The slide bar 32 and the linear bearing 42 cooperate to enhance the stability of the lifting frame 3 during movement.

[0040] Furthermore, the cleaning brush 1 includes first bristles 11, second bristles 12, a base plate 13, and a rotating shaft 14. The rotating shaft 14 is fixedly connected to the base plate 13. The upper ends of the first bristles 11 and the upper ends of the second bristles 12 are respectively fixedly connected to the base plate 13. The stiffness of the first bristles 11 is greater than that of the second bristles 12, and the distance from the first bristles 11 to the rotating shaft 14 is greater than the distance from the second bristles 12 to the rotating shaft 14. Compared to using only the first bristles 11, using the first and second bristles 11, 12 together requires less downforce from all the bristles. This lower downforce reduces the downforce requirement on the drive mechanism 41, allowing for a lighter model. It also avoids the excessive overall stiffness that would result from using only the first bristles 11. The first bristles 11 undergo almost no elastic deformation, and the drive mechanism 41 extends, causing the tracked robot 2 to be lifted and partially disengaged from the photovoltaic panel 9.

[0041] Because both the first bristles 11 and the second bristles 12 are used, under a constant downward pressure, the elastic deformation degree of the first bristles 11 of the present invention is greater than that of the prior art using only relatively hard bristles. Therefore, the contact area between a single first bristle 11 and the photovoltaic panel 9 of this embodiment is larger than that of the prior art. Combined with the contact area of ​​the second bristles 12, the overall contact area of ​​this embodiment is greater than that of the prior art using only relatively hard bristles, resulting in a better cleaning effect.

[0042] Furthermore, the first bristles 11 are arranged in a circle around the rotation axis of the substrate 13 , and the second bristles 12 are arranged in a circle around the rotation axis of the substrate 13 .

[0043] Furthermore, the angle α between the first bristles 11 and the rotation axis of the substrate 13 is 125 to 135 degrees, and the angle β between the second bristles 12 and the rotation axis of the substrate 13 is 120 to 130 degrees. The angle α between the first bristles 11 and the rotation axis of the substrate 13 is greater than the angle β between the second bristles 12 and the rotation axis of the substrate 13. The advantage of the angle α being greater than the angle β is that when the second bristles 12 rotate, the first bristles 11 contact with it to limit the second bristles 12 from floating outward too much, thereby avoiding the second bristles 12 from being out of contact with the photovoltaic panel 9 due to excessive outward floating of the second bristles 12 (i.e., the elastic deformation of the second bristles 12 is too large), thereby ensuring that the second bristles 12 maintain contact with the surface of the photovoltaic panel 9 and maintain the cleaning effect.

[0044] like Figures 1 to 3 As shown, a cleaning robot using the photovoltaic panel cleaning mechanism further includes a crawler robot 2, and the housing of the crawler robot 2 is fixedly connected to the fixing frame 4.

[0045] During operation, the drive mechanism 41 drives the lifting frame 3 downward, pressing the bristles of the cleaning brush 1 against the surface of the photovoltaic panel 9, causing the bristles to elastically deform. The motor 31 drives the two cleaning brushes 1 to rotate in opposite directions. The crawler robot 2 drives the fixed frame 4 to move over the photovoltaic panel 9, thereby driving the cleaning brushes 1 to move and clean the surface of the photovoltaic panel 9.

[0046] After the cleaning brush 1 starts to rotate, the bristles are affected by centrifugal force, and the lower part of the bristles moves upward and out of contact with the photovoltaic panel 9, resulting in a decrease in the cleaning area. At this time, the driving mechanism 41 can further move downward a distance to make the bristles move downward and contact the photovoltaic panel 9 again.

[0047] When cleaning the edge of the photovoltaic panel 9, since the driving mechanism 41 drives the bristles to move further downward, the diameter of the contact surface between the cleaning brush 1 and the photovoltaic panel 9 is larger, so the tracked robot 2 can be farther away from the edge, reducing the possibility of the tracked robot 2 falling from the photovoltaic panel 9.

[0048] The present invention is described above by way of examples, but the present invention is not limited to the above specific embodiments. Any changes or modifications based on the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A photovoltaic panel cleaning mechanism, characterized in that: include: A cleaning brush (1), a lifting frame (3), a fixed frame (4), a motor (31) and a driving mechanism (41), wherein the driving mechanism (41) is connected to the lifting frame (3) and the fixed frame (4) respectively, and the driving mechanism (41) drives the lifting frame (3) to move up and down relative to the fixed frame (4); the cleaning brush (1) is rotationally connected to the lifting frame (3); the motor (31) is installed on the lifting frame (3), and the motor (31) drives the cleaning brush (1) to rotate relative to the lifting frame (3).

2. A photovoltaic panel cleaning mechanism according to claim 1, characterized in that: The driving mechanism (41) is an electric push rod, the cylinder of the driving mechanism (41) is fixedly connected to the fixing frame (4), and the push rod of the driving mechanism (41) is fixedly connected to the lifting frame (3).

3. A photovoltaic panel cleaning mechanism according to claim 1, characterized in that: The lifting frame (3) is connected to two cleaning brushes (1), and the two cleaning brushes (1) rotate in opposite directions but at the same speed.

4. A photovoltaic panel cleaning mechanism according to claim 3, characterized in that: The invention also includes a first gear (35), a second gear (36), a first rotating shaft (38) and a second rotating shaft (39); the housing of the motor (31) is fixed relative to the lifting frame (3); the output shaft of the motor (31) is fixedly connected to the first rotating shaft (38); the first rotating shaft (38) is rotationally connected to the lifting frame (3); the first rotating shaft (38) is fixedly connected to the first gear (35); the first gear (35) is meshed with the second gear (36); the second gear (36) is fixedly connected to the second rotating shaft (39); the second rotating shaft (39) is rotationally connected to the lifting frame (3); the first rotating shaft (38) and the second rotating shaft (39) respectively drive different cleaning brushes (1) to rotate.

5. A photovoltaic panel cleaning mechanism according to claim 4, characterized in that: The cleaning brush (1) further comprises a first sprocket (33), a second sprocket (34) and a third sprocket (37); the rotating shaft (14) of the cleaning brush (1) is rotatably connected to the lifting frame (3); the rotating shaft (14) is fixedly connected to the second sprocket (34); the first rotating shaft (38) is fixedly connected to the first sprocket (33); the first sprocket (33) drives a second sprocket (34) to rotate via a first chain; the second rotating shaft (39) is fixedly connected to the third sprocket (37); the third sprocket (37) drives another second sprocket (34) to rotate via a second chain.

6. The photovoltaic panel cleaning mechanism according to claim 1, characterized in that: The utility model further comprises a sliding rod (32) and a linear bearing (42), wherein the sliding rod (32) is fixedly connected to the lifting frame (3), the linear bearing (42) is fixedly connected to the fixing frame (4), and the sliding rod (32) passes through the linear bearing (42) and is connected to the linear bearing (42).

7. The photovoltaic panel cleaning mechanism according to claim 1, characterized in that: The cleaning brush (1) comprises first bristles (11), second bristles (12), a base plate (13) and a rotating shaft (14); the rotating shaft (14) is fixedly connected to the base plate (13); the upper end of the first bristles (11) and the upper end of the second bristles (12) are fixedly connected to the base plate (13); the rigidity of the first bristles (11) is greater than the rigidity of the second bristles (12); and the distance from the first bristles (11) to the rotating shaft (14) is greater than the distance from the second bristles (12) to the rotating shaft (14).

8. The photovoltaic panel cleaning mechanism according to claim 7, characterized in that: The first bristles (11) are arranged in a circle around the rotation axis of the substrate (13), and the second bristles (12) are arranged in a circle around the rotation axis of the substrate (13).

9. The photovoltaic panel cleaning mechanism according to claim 8, characterized in that: The included angle α between the first bristles (11) and the rotation axis of the substrate (13) is 125 to 135 degrees, and the included angle β between the second bristles (12) and the rotation axis of the substrate (13) is 120 to 130 degrees; the included angle α is greater than the included angle β.

10. A cleaning robot using the photovoltaic panel cleaning mechanism according to any one of claims 1 to 9, characterized in that: It also includes a crawler robot (2), wherein the housing of the crawler robot (2) is fixedly connected to the fixing frame (4).

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