Adsorption type base for inclined photovoltaic panel

Abstract

The utility model belongs to the technical field of photovoltaic equipment cleaning, and particularly provides an adsorption type base for an inclined photovoltaic panel, which comprises a bottom plate, the bottom plate is provided with a moving unit and a plurality of negative pressure adsorption units and is used for adsorbing the bottom plate on the photovoltaic panel through negative pressure, and the adsorption stroke of the negative pressure adsorption units can be changed; as the adsorption stroke of the negative pressure adsorption unit can be changed, the negative pressure adsorption unit can be adaptively elongated and shortened when the adsorption type base is attached to the photovoltaic panel to move and encounters a bulge or a recess, that is, when the negative pressure adsorption unit encounters the bulge, the adsorption stroke of the negative pressure adsorption unit is shortened, and the adsorption stroke of the negative pressure adsorption unit is shortened. When the light panel moves, the bottom plate cannot tilt to generate an elevation angle, the adsorption stroke of the negative pressure adsorption unit is extended when the light panel is sunken, the bottom plate cannot sink at the position to generate a depression angle, and the stability of the whole bottom plate during movement on the light panel is further ensured.

Description

Technical Field

[0001] This utility model belongs to the field of photovoltaic equipment cleaning technology, and specifically provides an adsorption base for tilted photovoltaic panels. Background Technology

[0002] With the continuous growth of global energy demand and the increasing prominence of environmental problems, the development and utilization of clean energy has become a common focus for governments and enterprises worldwide. Solar energy, as a clean and renewable energy source, is gradually becoming an important component of global energy structure optimization due to its abundant resources and significant environmental benefits.

[0003] Currently, large-scale photovoltaic power plants are generally deployed in the arid and rain-scarce northwest region. Without prolonged cleaning, large amounts of dust accumulate on the surface of the photovoltaic modules, significantly impacting the energy conversion of the power plant. Existing mechanical cleaning equipment falls into two categories: one uses large vehicles to operate robotic arms for cleaning, and the other uses guide rails along the photovoltaic panels for robots to clean. The former is bulky, has high maintenance costs, and is poorly adaptable to confined spaces or desert environments, potentially failing to move properly and reducing overall cleaning efficiency. The latter, on the other hand, is also very expensive to install. Furthermore, neither of these methods is suitable for small or hard-to-reach photovoltaic arrays. Therefore, there is a need to develop a self-adhesive, portable cleaning robot to reduce equipment costs and be applicable to small photovoltaic arrays.

[0004] However, photovoltaic panels in photovoltaic arrays are typically tilted, requiring a suction force for portable cleaning robots to adhere to and move on them for cleaning. Existing suction methods include negative pressure adsorption, magnetic adsorption, or biomimetic adsorption on the robot's chassis. Negative pressure adsorption is problematic on complex, rough surfaces, especially with large cracks or unevenness, as air leakage can cause the robot to fall. Magnetic adsorption is heavily reliant on materials, increasing the robot's weight and energy consumption, hindering portability and low-power design. Biomimetic adsorption structures are difficult to widely adopt in the photovoltaic field due to complex manufacturing processes, high costs, and maintenance difficulties. Therefore, there is an urgent need for a base that allows cleaning robots to stably attach to photovoltaic panels at different angles while meeting both portability and stability requirements. Utility Model Content

[0005] This invention provides an adsorption base for tilted photovoltaic panels, which allows the base to be stably adsorbed onto the surface of the photovoltaic panel through the adaptive changes of the adsorption unit.

[0006] The technical solution of this utility model is as follows:

[0007] An adsorption base for tilting photovoltaic panels includes a base plate, on which a moving unit and multiple negative pressure adsorption units are provided for adsorbing the base plate onto the photovoltaic panel by negative pressure. The adsorption stroke of the negative pressure adsorption units is variable.

[0008] Because the base inevitably encounters uneven surfaces on the photovoltaic panels during movement, especially with protrusions on the edges of some panels, the negative pressure adsorption unit must pass over these protrusions when bridging the gaps between panels. However, air leakage can occur when the negative pressure adsorption surface contacts these protrusions or depressions, causing the adsorption to fail. Setting up multiple negative pressure adsorption units ensures that even if one unit fails, others can continue adsorption, maintaining effective adsorption for the entire base plate. However, the base plate may also experience tilting or downward angles due to encountering protrusions and depressions, which can easily cause other negative pressure adsorption units to fail, ultimately leading to the entire device falling. In this solution, because the adsorption stroke of the negative pressure adsorption unit can change, when the adsorption base moves on the photovoltaic panel, it can adapt to "extend or shorten" when it encounters a protrusion or depression. That is, when the negative pressure adsorption unit encounters a protrusion, its adsorption stroke is shortened to ensure that the base plate does not tilt up and create an upward angle, while when it encounters a depression, its adsorption stroke is extended to ensure that the base plate does not sink down and create a downward angle, thereby ensuring the stability of the entire base plate when it moves on the photovoltaic panel.

[0009] Preferably, the negative pressure adsorption unit includes a brushless motor, an impeller, a mounting base, and a base pad. The impeller mounting base is disposed through the base plate, and the impeller is mounted on the mounting base. The base pad is provided with a plurality of adsorption holes communicating with the impeller. The base pad is slidably inserted into the mounting base from below the base plate. The brushless motor controls the impeller to rotate, and air is drawn in from the adsorption holes on the base pad.

[0010] In this design, a brushless motor rotates the impeller, drawing air from the bottom to create a negative pressure cavity between the base and the mounting base. The components are small and lightweight, and the installation structure is simple. The base slides along the slot of the mounting base, changing the length of the negative pressure cavity and thus controlling the adsorption stroke of the negative pressure adsorption unit. At the same time, multiple adsorption holes on the base can also prevent protrusions or large foreign objects from blocking the negative pressure adsorption unit.

[0011] Preferably, an elastic member is provided between the base pad and the mounting base, and the elastic member provides a force to the base pad away from the mounting base.

[0012] In this scheme, the elastic component provides a downward force to the bottom pad, which lengthens the adsorption stroke of the negative pressure adsorption bottom pad when it is not adsorbing, ensuring that the negative pressure adsorption unit can quickly resume negative pressure adsorption after passing the protrusion.

[0013] Preferably, the force provided by the elastic member is less than the negative pressure adsorption force provided by the negative pressure adsorption unit. This ensures that the base pad is at its minimum adsorption stroke when the negative pressure adsorption unit is adsorbing. However, due to the presence of the moving unit, the height of the moving unit is necessarily lower than the height of the base plate. The moving unit limits the base plate, allowing the negative pressure adsorption unit to further shorten its adsorption stroke, thereby ensuring that the base can smoothly pass over the protrusion.

[0014] Preferably, the bottom outer edge of the base pad is provided with a rounded corner seal. By providing a rounded corner seal, an upward component force is generated when the base pad comes into contact with the protrusion, preventing the negative pressure adsorption base from colliding with the protrusion.

[0015] Preferably, three negative pressure adsorption units are evenly spaced on the base plate, and the moving unit is a set of moving wheels, which are symmetrically arranged on both sides of the base plate. The three negative pressure adsorption units make the overall adsorption base lighter and ensure that at least two negative pressure adsorption units can continue to adsorb, forming a line and preventing the base plate from tilting.

[0016] Since the distance between the moving unit and the base is fixed and cannot be adjusted in real time, and the moving unit will encounter the protrusion or depression before the base plate, causing the base plate to tilt or tilt. To prevent other negative pressure adsorption units from failing at this time, preferably, the negative pressure adsorption unit is rotatably mounted on the base plate, with the rotation axis of the negative pressure adsorption unit parallel to the surface of the base plate and perpendicular to the displacement direction of the base plate, ensuring effective adsorption by the negative pressure adsorption unit when the base plate is tilted.

[0017] Preferably, the mounting base is rotatably mounted on the base plate on both sides via a rotating shaft, and a bidirectional torsion spring is provided on the rotating shaft. The bidirectional torsion spring ensures that the axis of the negative pressure adsorption unit remains perpendicular to the bottom surface of the base when no external force other than gravity is applied, thus guaranteeing the automatic reset capability after the base rotates.

[0018] Preferably, a limit plate is provided on the base plate to limit the rotation angle of the mounting base.

[0019] In this solution, the maximum rotation angle of the negative pressure adsorption unit is limited by the limiting plate to avoid the negative pressure adsorption unit being obstructed by the protrusion when the bottom plate passes through the protrusion, resulting in a large-angle rotation and thus the inability to recover or re-adsorb.

[0020] Preferably, the negative pressure adsorption unit further includes a flow guide shroud and a drive protection housing.

[0021] In this design, the drive protection housing protects the motor drive board from being invaded by dust, sand, and other impurities during subsequent operation, while the gas guide shroud guides the air drawn in by the impeller to be discharged from the side.

[0022] The beneficial effects of this utility model are:

[0023] This invention provides adsorption force to the base through negative pressure adsorption. The multiple negative pressure adsorption units ensure that even if one unit fails, multiple units can continue to adsorb, guaranteeing the overall effective adsorption of the base. Furthermore, because the adsorption stroke of the negative pressure adsorption units can change, as the adsorption base moves on the photovoltaic panel, when a negative pressure adsorption unit encounters a protrusion, its adsorption stroke shortens to prevent the base from tilting upwards. Conversely, when it encounters a depression, its adsorption stroke lengthens to prevent the base from sinking downwards. This ensures effective adsorption and stability of the entire base as it moves on the photovoltaic panel. Attached Figure Description

[0024] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the base of this utility model;

[0026] Figure 2 This is a side view of the base of this utility model;

[0027] Figure 3 This is a partial cross-sectional schematic diagram of the negative pressure adsorption unit of this utility model.

[0028] In the above figures, the corresponding reference numerals are as follows:

[0029] 1-Base plate, 2-Moving unit, 3-Negative pressure adsorption unit, 301-Brushless motor, 302-Impeller, 303-Mounting base, 304-Base pad, 305-Adsorption hole, 306-Elastic component, 307-Rotating shaft, 308-Guide cover, 309-Drive protection housing, 310-Sliding slot, 311-Mounting ridge, 312-Limiting plate. Detailed Implementation

[0030] The technical solution of the present invention will be clearly and completely described in conjunction with the accompanying drawings and through specific implementation methods of the embodiments of the present invention.

[0031] Example 1:

[0032] An adsorption base for tilting photovoltaic panels, such as Figure 1As shown, it includes a base plate 1, on which a moving unit 2 and at least three negative pressure adsorption units 3 are provided for adsorbing the base plate 1 onto the photovoltaic panel by negative pressure. The adsorption stroke of the negative pressure adsorption unit 3 can be varied.

[0033] In this embodiment, three negative pressure adsorption units 3 are evenly spaced on the base plate 1. The moving unit 2 is a set of moving wheels, which are symmetrically arranged on both sides of the base plate 1. The three negative pressure adsorption units 3 make the overall adsorption base lighter and ensure that at least two negative pressure adsorption units 3 can continue to adsorb, forming a line and preventing the base plate 1 from tilting. The negative pressure adsorption unit 3 includes a brushless motor 301, an impeller 302, a mounting base 303, and a base pad 304. The mounting base 303 of the impeller 302 is disposed through the base plate 1, and the impeller 302 is mounted on the mounting base 303. The base pad 304 is provided with multiple adsorption holes 305 communicating with the impeller 302. The base pad 304 slides from below the base plate 1 and is inserted into the mounting base 303. The brushless motor 301 controls the rotation of the impeller 302 to draw air from the adsorption holes 305 on the base pad 304. The brushless motor 301 rotates the impeller 302, drawing air from the bottom. This creates a negative pressure cavity between the base pad 304 and the mounting base 303. The base pad 304 slides along the slot of the mounting base 303, changing the length of the negative pressure cavity and thus controlling the adsorption stroke of the negative pressure adsorption unit 3. When the adsorption base moves against the photovoltaic panel, if the negative pressure adsorption unit 3 encounters a protrusion, the base pad 304 is forced upwards towards the base, shortening the adsorption stroke of the negative pressure adsorption unit 3. This ensures that the height of the protrusion plus the adsorption stroke of the negative pressure adsorption unit 3 at the point where it encounters a protrusion equals the adsorption stroke of other negative pressure adsorption units 3, keeping the entire base plate 1 parallel to the photovoltaic panel and preventing it from tilting upwards. Conversely, if it encounters a depression, the base pad 304 moves downwards away from the base plate 1, increasing the adsorption stroke and preventing the base plate 1 from sinking downwards at that point, thus ensuring effective adsorption and stability of the entire base plate 1 as it moves on the photovoltaic panel.

[0034] It should be noted that, as Figure 3 As shown, the bottom of the mounting base 303 is provided with multiple sliding slots 310 from the inside to the outside. Similarly, the bottom pad 304 is also provided with multiple mounting ridges 311. The mounting ridges 311 are inserted into the sliding slots 310. The multiple sliding slots 310 can ensure to a certain extent that the cavity formed by the bottom pad 304 and the mounting base 303 will not leak air when the bottom pad 304 slides.

[0035] Furthermore, the negative pressure adsorption unit 3 also includes a guide shroud 308 and a drive protection housing 309. The drive protection housing 309 protects the motor drive board from dust, sand, and other impurities during subsequent operation, while the gas guide shroud guides the air drawn in by the impeller 302 to be discharged from the side, preventing other devices above the negative pressure adsorption unit 3 from blocking the air outlet and thus affecting the adsorption effect. An elastic member 306 is provided between the base pad 304 and the mounting base 303, providing a force to the base pad 304 away from the mounting base 303. Preferably, the elastic member 306 is a plurality of springs disposed between the base pad 304 and the mounting base 303, and the force provided by the elastic member 306 is less than the negative pressure adsorption force provided by the negative pressure adsorption unit 3. By bringing the entire base plate 1 closer to the photovoltaic panel during the adsorption process, and using casters that are lower than the height of the base plate 1, the negative pressure adsorption unit 3 has room to further shorten the adsorption stroke. This means the base pad 304 does not completely abut against the mounting base 303, allowing it to move closer to the base plate 1 when encountering a protrusion, ensuring the base can smoothly pass over it. Furthermore, the elastic member 306 provides a downward force to the base pad 304, extending the adsorption stroke of the negative pressure adsorption base pad 304 when not adsorbing, ensuring the negative pressure adsorption unit 3 can quickly resume negative pressure adsorption after passing over the protrusion.

[0036] Furthermore, the bottom outer edge of the base pad 304 is provided with rounded corner sealing. By setting the rounded corner sealing, the base pad 304 can generate an upward component force after contacting the protrusion, avoiding collision between the negative pressure adsorption base and the protrusion.

[0037] Example 2:

[0038] Since the distance between the moving unit 2 and the base is fixed and cannot be adjusted in real time, and the moving unit 2 will touch the protrusion or depression before the base plate 1, causing the base plate 1 to tilt or tilt. To prevent the other negative pressure adsorption units 3 from failing to adsorb at this time, this embodiment, based on embodiment one, such as... Figure 1 As shown, the negative pressure adsorption unit 3 is rotatably mounted on the base plate 1. The rotation axis of the negative pressure adsorption unit 3 is parallel to the surface of the base plate 1 and perpendicular to the displacement direction of the base plate 1, ensuring effective adsorption by the negative pressure adsorption unit 3 when the base plate 1 is tilted.

[0039] Specifically, the mounting base 303 is rotatably mounted on the base plate 1 via a rotating shaft 307 on both sides, and a bidirectional torsion spring is provided on the rotating shaft 307. The bidirectional torsion spring ensures that the axis of the negative pressure adsorption unit 3 is always perpendicular to the bottom surface of the base when it is not subjected to any external force other than gravity, thus guaranteeing the automatic reset capability after the base rotates.

[0040] Furthermore, a limiting plate 312 is provided on the base plate 1 to limit the rotation angle of the mounting base 303. By limiting the maximum rotation angle of the negative pressure adsorption unit 3 through the limiting plate 312, the problem of the negative pressure adsorption unit 3 being obstructed by the protrusion when the base plate 1 passes through it, resulting in large-angle rotation and thus being unable to recover or re-adsorb, is avoided.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model.

Claims

1. An adsorption base for tilted photovoltaic panels, characterized in that: Includes a base plate (1), on which a moving unit (2) and multiple negative pressure adsorption units (3) are provided, for adsorbing the base plate (1) onto the photovoltaic panel by negative pressure, and the adsorption stroke of the negative pressure adsorption unit (3) can be varied.

2. The adsorption base for tilted photovoltaic panels according to claim 1, characterized in that: The negative pressure adsorption unit (3) includes a brushless motor (301), an impeller (302), a mounting base (303), and a base pad (304). The mounting base (303) of the impeller (302) is disposed through the base plate (1). The impeller (302) is mounted on the mounting base (303). The base pad (304) is provided with a plurality of adsorption holes (305) communicating with the impeller (302). The base pad (304) slides and inserts into the mounting base (303) from below the base plate (1). The brushless motor (301) controls the impeller (302) to rotate and draw air from the adsorption holes (305) on the base pad (304).

3. An adsorption base for tilted photovoltaic panels according to claim 2, characterized in that: An elastic member (306) is provided between the base pad (304) and the mounting base (303), and the elastic member (306) provides a force to the base pad (304) away from the mounting base (303).

4. An adsorption base for tilted photovoltaic panels according to claim 3, characterized in that: The force provided by the elastic member (306) is less than the negative pressure adsorption force provided by the negative pressure adsorption unit (3).

5. An adsorption base for tilted photovoltaic panels according to claim 2, characterized in that: The bottom outer edge of the base pad (304) is provided with a rounded corner seal.

6. An adsorption base for tilted photovoltaic panels according to claim 2, characterized in that: Three negative pressure adsorption units (3) are equally spaced on the base plate (1), and the moving unit (2) is a set of moving wheels, which are symmetrically arranged on both sides of the base plate (1).

7. An adsorption base for tilted photovoltaic panels according to claim 6, characterized in that: The negative pressure adsorption unit (3) is rotatably mounted on the base plate (1), and the rotation axis of the negative pressure adsorption unit (3) is parallel to the surface of the base plate (1) and perpendicular to the displacement direction of the base plate (1).

8. An adsorption base for tilted photovoltaic panels according to claim 7, characterized in that: The mounting base (303) is rotatably mounted on the base plate (1) on both sides via a rotating shaft (307), and a bidirectional torsion spring is provided on the rotating shaft (307).

9. An adsorption base for tilted photovoltaic panels according to claim 8, characterized in that: A limit plate (312) is provided on the base plate (1) to limit the rotation angle of the mounting base (303).

10. An adsorption base for tilted photovoltaic panels according to claim 2, characterized in that: The negative pressure adsorption unit (3) also includes a flow guide shroud (308) and a drive protection housing (309).

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