Adsorption type base of photovoltaic panel cleaning device and cleaning device

Abstract

The invention belongs to the technical field of photovoltaic equipment cleaning, and relates to an adsorption type base of a photovoltaic panel cleaning device and the cleaning device.The base comprises a bottom plate, moving wheels are arranged on the bottom plate, the bottom plate comprises multiple sections of bottom plate blocks which are rotationally connected in sequence, and each section of bottom plate block is provided with an adsorption unit; according to the invention, the bottom plate can be adsorbed on the photovoltaic panel through the plurality of adsorption units and can move through the moving wheels, the bottom plate is formed by connecting the plurality of bottom plate blocks, and when a certain bottom plate block is subjected to seam crossing, the bottom plate block subjected to seam crossing is raised by the edge bulge of the photovoltaic panel, so that a certain elevation angle is formed; the bottom plate blocks are relatively independent, lifting of one bottom plate block cannot drive other bottom plate blocks to generate angle change, effective adsorption of other adsorption units cannot be affected, and it is guaranteed that the base cannot fall off during seam crossing.

Description

Technical Field

[0001] The invention belongs to the technical field of photovoltaic equipment cleaning, and relates to an adsorption-type base of a photovoltaic panel cleaning device and a cleaning device. Background Art

[0002] With the continuous growth of global energy demand and the increasingly severe environmental protection issues, the development and utilization of clean energy has become the focus of governments and enterprises around the world. As a clean and renewable energy, solar energy has gradually become an important part of the global energy structure optimization due to its abundant resources and positive impact on the environment.

[0003] At present, most large-scale photovoltaic power stations are built in the arid and rainless northwest region. If they are not cleaned for a long time, dust in the air will gradually accumulate on the surface of photovoltaic modules, which will significantly reduce the energy conversion efficiency of photovoltaic power stations, and thus affect the power generation effect and economic benefits of the entire photovoltaic system. Nowadays, portable cleaning robots have become a research hotspot in the photovoltaic cleaning industry. This robot is designed for small or difficult-to-reach photovoltaic arrays to achieve automation and efficiency of cleaning tasks. However, the angle adjustment range of photovoltaic panels is between 0° and 45°, and due to the influence of the installation environment, there is a gap of 2mm to 20mm between the panels in the same photovoltaic array, and there will be a 5mm to 10mm protrusion on the edge of the panel at the gap. Therefore, the robot used for cleaning photovoltaic panels not only needs to achieve bonding and autonomous movement on photovoltaic modules with a maximum inclination of 45°, but also needs to have the ability to cross the gap. In the prior art, a vehicle-mounted robotic arm is usually used to control the cleaning device, or a walking rail is set up along the photovoltaic array to provide support for the robot. The former is large in size, has poor ability to adapt to special sites such as narrow or deserts, and has high maintenance costs; the latter requires different rails to be set according to different arrangements of photovoltaic modules, which not only increases costs but also is not easy to maintain. Therefore, how to achieve the fit movement and seam-crossing action of a portable cleaning robot for miniaturized photovoltaic panels on an inclined panel has become an urgent problem to be solved in the art. Summary of the invention

[0004] In order to solve the above problems, the present invention provides an adsorption base and a cleaning device for a photovoltaic panel cleaning device, which divides a complete base into multiple movably connected areas, so that each area will not be affected by the angle changes of other areas, and the base can stably pass through protrusions and gaps with sufficient adsorption force.

[0005] The technical solution of the present invention is as follows:

[0006] A suction base of a photovoltaic panel cleaning device comprises a bottom plate, on which a moving wheel is arranged, and the bottom plate comprises a plurality of bottom plate sections which are rotatably connected in sequence, and each bottom plate section is provided with a suction unit.

[0007] In this solution, the bottom plate can be adsorbed on the photovoltaic panel by multiple adsorption units and moved by moving wheels. The bottom plate is composed of multiple bottom plates connected together. When one of the bottom plates crosses the seam, the bottom plate crossing the seam is lifted up by the bulge on the edge of the photovoltaic panel, thereby forming a certain elevation angle. Due to the active connection with other bottom plates, each bottom plate is relatively independent. The lifting of one bottom plate will not cause the angle of other bottom plates to change, and will not affect the effective adsorption of other adsorption units, thereby ensuring that the base will not fall when crossing the seam.

[0008] Preferably, the adsorption unit includes an impeller driven by a brushless motor and a mounting seat, the bottom surface of the mounting seat is provided with an air suction through hole, the bottom of the mounting seat is connected to a negative pressure bottom pad with a through hole, the height of the negative pressure bottom pad is lower than the height of the bottom plate, when the through hole of the negative pressure bottom pad is blocked and the impeller rotates, a negative pressure area can be formed between the negative pressure bottom pad and the adsorption through hole. The impeller rotates to suck air to form a low pressure area between the contact surface of the negative pressure bottom pad and the photovoltaic panel, forming a pressure difference with the external environment, and then tying the bottom plate to the photovoltaic panel. The structure and design of the impeller and the mounting seat are relatively simple, the structure is light, and the overall weight of the base is improved.

[0009] The bottom plate is connected by multiple sections of bottom plates. The bottom plate that crosses the seam first, when it is lifted up by the edge protrusion of the photovoltaic panel to form an elevation angle, will not affect the bottom plate behind due to the rotational connection. However, as the crossing seam action proceeds, the bottom plate that crosses the seam passes over the gap, and when the elevation angle formed by the edge protrusion of the photovoltaic panel becomes a flat angle and a depression angle, the adjacent bottom plate will be lifted up, and the subsequent bottom plate crossing the seam to produce an elevation angle will also affect the adjacent bottom plate that has completed the crossing seam, which may easily lead to the risk of adsorption failure of the two groups of adsorption units and increase the possibility of the bottom plate falling. In order to avoid the above problems, preferably, the bottom surface of the mounting seat is provided with a bottom pad slide groove around the adsorption through hole, and the negative pressure bottom pad is provided with a mounting ridge corresponding to the bottom pad slide groove, and the mounting ridge is slidably inserted in the bottom pad slide groove.

[0010] In this scheme, the negative pressure base pad is slidably connected to the mounting base to increase the adsorption stroke of the negative pressure base pad, so that after the adsorption unit is adsorbed on the photovoltaic panel, its base can still be away from the photovoltaic panel to a certain extent. When the previous base plate forms a depression angle across the seam, the subsequent adjacent base plate can be raised relative to the photovoltaic panel, and the adsorption stroke is increased, thereby adapting to the elevation angle formed by the previous base plate; at the same time, when the base plate forms an elevation angle across the seam, the previous base plate can also be raised relative to the photovoltaic panel to increase the adsorption formation, so that the depression angle will not be generated, thereby ensuring that only the adsorption unit across the seam fails, thereby improving the effective adsorption force of the entire base plate when crossing the seam.

[0011] Preferably, the bottom surface of the negative pressure pad is provided with a rounded edge seal. By providing the rounded edge seal, when the base moves, when the adsorption unit contacts the protrusion on the edge of the photovoltaic panel, the rounded edge seal is subjected to an upward force component, and the adsorption unit will not abut against the protrusion on the edge of the photovoltaic panel, making it easier to pass over the protrusion of the photovoltaic panel.

[0012] Preferably, the minimum spacing of the bottom surface of the negative pressure base pad is larger than the gap of the photovoltaic panel array, ensuring that at most only one adsorption unit of the base fails when the base crosses the gap, thereby ensuring the effective adsorption force of the base.

[0013] Preferably, the moving wheel is a synchronous pulley, which is arranged on the bottom plate of the synchronous pulley, and the adsorption unit is rotatably connected to the bottom plate, and the rotation axis of the adsorption unit is perpendicular to the moving direction of the bottom plate. In this scheme, the synchronous pulley can provide greater friction when rotating to ensure that the base can move smoothly under the adsorption of multiple adsorption units, but in order to have a sufficiently large friction force for the synchronous pulley, the spacing between the two synchronous wheels in the synchronous pulley must be greater than the diameter of a single negative pressure bottom pad, which makes the bottom plate provided with the synchronous pulley contact the edge protrusion of the photovoltaic panel first when crossing the seam, and the bottom plate will generate an elevation angle in advance, which will cause the adsorption unit on this section of the bottom plate to release the adsorption state in advance. By rotatably connecting the adsorption unit on the bottom plate, even if the bottom plate generates an elevation angle, the effective adsorption of the adsorption unit here is achieved with the cooperation of the adsorption unit that can adjust the angle and the adsorption bottom pad with an extended adsorption stroke, thereby avoiding the risk of multiple adsorption units failing at the same time.

[0014] Preferably, the adsorption unit further includes a driving protection shell and a gas guide cover.

[0015] In this solution, the drive protection housing can protect the motor drive board from being invaded by dust, sand and other impurities during subsequent work, and the air guide cover can also guide the air sucked by the impeller to be discharged from the side.

[0016] Preferably, the multi-section bottom plate comprises a front bottom plate, a middle bottom plate and a rear bottom plate, and the front bottom plate, the middle bottom plate and the rear bottom plate are connected by hinges.

[0017] In this solution, the multi-section bottom plate is divided into three pieces to ensure the small size of the base, and at least two adsorption units of the bottom plate are always in effective adsorption, ensuring the stability of the bottom plate on the photovoltaic panel. The hinge connection is easy to install, low cost, and can withstand a certain amount of thrust and pull.

[0018] Since the moving wheels are generally arranged on the middle bottom plate, and the front bottom plate relies on the middle bottom plate to push the movement, during the crossing process, the front bottom plate may have a large resistance, and the middle bottom plate keeps pushing against the front bottom plate, resulting in insufficient adsorption and an increasingly larger angle between the bottom plates, causing multiple adsorption units to fail. In order to avoid this situation, preferably, an angle limiting cover plate is provided on the hinge to limit the maximum elevation and depression angles that the hinge can rotate.

[0019] A cleaning device comprises the above-mentioned adsorption base of the photovoltaic panel cleaning device, and also comprises a cleaning brush head and a power unit.

[0020] In this solution, by arranging a cleaning brush head and a power unit on the base, the function of being able to fit and move on the inclined photovoltaic panel and perform cross-seam movements is achieved.

[0021] Beneficial effects of the present invention:

[0022] The present invention has a small size and a simple structure. The bottom plate can be adsorbed on the photovoltaic panel by a plurality of adsorption units and moved by moving wheels. The bottom plate is composed of a plurality of bottom plates connected together. When one of the bottom plates crosses the seam, the bottom plate crossing the seam is lifted up by the edge protrusion of the photovoltaic panel, thereby forming a certain elevation angle. Since the bottom plates are rotatably connected with other bottom plates, each bottom plate is relatively independent. The lifting of one bottom plate will not cause the angle of other bottom plates to change, and will not affect the effective adsorption of other adsorption units, thereby ensuring that the base will not fall when crossing the seam. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solution of the present invention, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A three-dimensional diagram of the base of the present invention;

[0025] Figure 2 is a cross-sectional view of an adsorption unit of the present invention;

[0026] Figure 3 This is a schematic diagram of the base of the present invention when no cross-seam is performed;

[0027] Figure 4 It is a schematic diagram of the front bottom plate of the present invention when performing cross-seam;

[0028] Figure 5 It is a schematic diagram of the bottom plate starting to cross the seam in the present invention;

[0029] Figure 6It is a schematic diagram of the end of the cross seam of the bottom plate in the present invention;

[0030] Figure 7 A schematic diagram of another embodiment of a bottom plate of the present invention;

[0031] Figure 8 A schematic diagram of another embodiment of the bottom plate of the present invention for cross-seam application;

[0032] Fig. 9 The cleaning device of the present invention.

[0033] In the above drawings, the corresponding reference numerals are as follows:

[0034] 1-bottom plate, 101-front bottom plate, 102-middle bottom plate, 103-rear bottom plate, 2-moving wheel, 3-adsorption unit, 301-impeller, 302-mounting seat, 303-air suction hole, 304-negative pressure bottom pad, 305-bottom pad slide, 306-mounting ridge, 307-drive protection shell, 308-gas guide cover, 309-elastic member, 4-hinge, 5-motor, 6-photovoltaic array gap, 7-connecting rod, 8-connecting column, 81-limiting block, 9-cleaning brush head, 10-housing. DETAILED DESCRIPTION

[0035] In conjunction with the accompanying drawings, the technical solution of the present invention is clearly and completely described through the specific implementation methods of the embodiments of the present invention.

[0036] Embodiment 1:

[0037] A suction base of a photovoltaic panel cleaning device (hereinafter referred to as the suction base of the photovoltaic panel cleaning device) is provided. Figure 1 As shown, the bottom plate 1 includes a bottom plate 1, on which a moving wheel 2 is arranged, and the bottom plate 1 includes a plurality of bottom plates that are movably connected in sequence, and each bottom plate is provided with an adsorption unit 3. Each bottom plate is movable relative to other bottom plates, and even if a movable block is tilted or sunken to generate an elevation angle or a depression angle, other bottom plates will not be inclined, and the adsorption effect of the adsorption units 3 on other bottom plates will not be affected.

[0038] Specifically, the bottom plate 1 can be adsorbed on the photovoltaic panel by multiple adsorption units 3 and moved by the moving wheels 2. The bottom plate 1 is composed of multiple bottom plate blocks connected together. The number of bottom plate 1 connecting blocks is preferably not less than 3, ensuring that the adsorption units 3 of at least 2 bottom plate 1 connecting blocks are effectively adsorbed. In this embodiment, there are three connecting blocks, which are divided into a front bottom plate 101, a middle bottom plate 102 and a rear bottom plate 103.

[0039] It should be noted that in general, the moving wheel 2 is arranged on the middle bottom plate 102, and the front bottom plate 101 relies on the middle bottom plate 102 to push the movement. In the process of crossing the gap, the front bottom plate 101 may have a large resistance, and the middle bottom plate 102 always pushes against the front bottom plate 101, resulting in inadequate adsorption, resulting in an increasingly larger angle between the bottom plates 1, and causing multiple adsorption units 3 to fail. In order to avoid this situation, the bottom plates cannot be flexibly connected. Preferably, a rotating connection structure is provided between the bottom plates, such as Figure 1 As shown, a hinge 4 capable of withstanding a certain thrust and tension is selected for connection, and an angle limiting cover plate is provided on the hinge 4 to limit the maximum elevation angle and depression angle that the hinge 4 can rotate.

[0040] Embodiment 2:

[0041] like Figure 2 As shown, this embodiment provides a specific structural setting of an adsorption unit 3. On the basis of the first embodiment, the adsorption unit 3 includes but is not limited to a magnetic adsorption structure, a bionic adsorption structure, a negative pressure adsorption structure, etc. In this embodiment, a negative pressure adsorption structure is preferably used. Specifically, the adsorption unit 3 includes an impeller 301 driven by a brushless motor 5 and a mounting seat 302. The bottom surface of the mounting seat 302 is provided with an air suction through hole 303. The bottom of the mounting seat 302 is connected to a negative pressure bottom pad 304 with a through hole. The height of the negative pressure bottom pad 304 is lower than the height of the bottom plate 1. When the through hole of the negative pressure bottom pad 304 is blocked and the impeller 301 rotates, the negative pressure bottom pad 304 and the adsorption through hole can form a negative pressure area. The impeller 301 rotates to absorb air to form a low pressure area between the contact surface of the negative pressure bottom pad 304 and the photovoltaic panel, and a pressure difference is formed with the external environment, so that the bottom plate 1 is pressed on the photovoltaic panel. The structure and design of the impeller 301 and the mounting seat 302 are relatively simple, the structure is light, and the overall weight of the base is improved. At the same time, the adsorption unit 3 also includes a drive protection shell 307 and a gas guide cover 308. The drive protection shell 307 can protect the drive board of the motor 5 from being invaded by impurities such as dust and sand in subsequent work, and the gas guide cover 308 can also guide the air sucked by the impeller 301 to be discharged toward the side, so that the subsequent installation of components such as circuit boards and batteries will not affect the ventilation of the adsorption unit 3.

[0042] Furthermore, the height of the base of the negative pressure bottom pad 304 should be greater than or equal to the height of the protrusion of the edge of the photovoltaic panel, so as to avoid the wear of the bottom and prevent the bottom plate 1 from directly protruding from the photovoltaic surface panel, so as to avoid the excessive height difference between the bottom plate 1 and the photovoltaic panel when an elevation or depression angle is generated. At the same time, the bottom surface of the mounting seat 302 is provided with an annular bottom pad groove 305 around the adsorption through hole, and the negative pressure bottom pad 304 is provided with a mounting ridge 306 corresponding to the bottom pad groove 305, and the mounting ridge 306 is slidably inserted in the bottom pad groove 305.

[0043] In this embodiment, in combination with the first embodiment, when the front bottom plate 101 first crosses the gap, when it is lifted up by the edge protrusion of the photovoltaic panel to form an elevation angle, it will not affect the rear bottom plate due to the rotation connection through the hinge 4, but as the cross-slot action proceeds, the front bottom plate 101 crosses the gap, and when the elevation angle formed by the edge protrusion of the photovoltaic panel becomes a flat angle and a depression angle, the middle bottom plate 102 will be lifted up. At this time, the adsorption unit 3 of the front bottom plate 101 may not be effectively adsorbed, and lifting the middle bottom plate 102 will also cause the middle bottom plate 102 to have an elevation angle, which is very likely to cause the adsorption unit 3 of the middle bottom plate 102 to fail to adsorb at the same time. The negative pressure pad 304 is inserted and slidably mounted in the mounting base through the mounting ridge 306, so that the negative pressure pad 304 can move vertically relative to the bottom surface of the bottom plate 1, thereby increasing the adsorption stroke of the negative pressure pad 304, so that the bottom plate 1 can be away from the photovoltaic panel to a certain extent during the adsorption process, that is, in the above environment, the front bottom plate 101 has a depression angle, and in order to avoid the middle bottom plate 102 from having an elevation angle, the negative pressure pad 304 on the middle bottom plate 102 is adsorbed on the photovoltaic panel, and the middle bottom plate 102 moves upward relative to the photovoltaic panel to avoid the middle bottom plate 102 from having an elevation angle. Similarly, the influence of the elevation angle generated when the middle bottom plate 102 crosses the seam on the front bottom plate 101, the influence of the flat angle and depression angle generated when the middle bottom plate 102 crosses the seam on the rear bottom plate 103, and the influence of the elevation angle generated by the rear bottom plate 103 on the middle bottom plate 102 can all be solved by increasing the adsorption stroke of the negative pressure pad 304.

[0044] It should be noted that since the negative pressure bottom pad 304 can slide relative to the mounting base, it is necessary to ensure the relative sealing between the mounting ridge 306 and the bottom pad groove 305 during sliding to ensure that the negative pressure cavity generated during adsorption will not leak. At this time, multiple groups of mounting ridges 306 and bottom pad grooves 305 can be set to ensure sealing.

[0045] Furthermore, an elastic member 309 may be provided between the negative pressure bottom pad 304 and the mounting seat 302, and the elastic member 309 provides the negative pressure bottom pad 304 with a force to move away from the mounting seat 302. The elastic member 309 preferably uses an elastic spring, and the two ends of the elastic spring abut against the mounting seat 302 and the negative pressure bottom pad 304, and the elastic force of the elastic member 309 is less than the adsorption force of the adsorption unit 3. When the seam is not crossed, the adsorption force of the adsorption unit 3 is greater than the elastic force of the elastic spring, so that the adsorption bottom pad is at the closest position to the bottom plate 1, and the elastic spring also makes it easier to extend the adsorption stroke of the negative pressure bottom pad 304. And when the seam is crossed, the adsorption of the adsorption unit 3 fails. At this time, the adsorption force is zero, and the negative pressure bottom pad 304 is pushed away by the elastic spring, and at the farthest position from the bottom plate 1, the bottom plate of the cross-seam can quickly re-adsorb effectively.

[0046] Specifically, Figures 3 to 6As shown, on the bottom plate without the moving wheel 2, the adsorption bottom pad is at the position closest to the bottom plate 1, such as the front bottom plate 101 and the rear bottom plate 103 in this embodiment, and then on the bottom plate with the moving wheel 2, such as the middle bottom plate 102, the moving wheel 2 itself is lower than the middle bottom plate 102, so the adsorption bottom pad on the middle bottom plate 102 is not at the position closest to the bottom plate 1. When all the adsorption units 3 are the same, the heights of the front bottom plate 101 and the rear bottom plate 103 are lower than the middle bottom plate 102, so the initial angle of the hinge 4 is not 180 degrees, but The obtuse angle is less than 180°, and the rotation angle of the hinge 4 needs to be restricted to a certain extent so that the angle is between the initial angle and the restricted angle. Taking the edge protrusion height BC of the photovoltaic panel as 10mm and the distance AB between the adsorption unit 3 of the front bottom plate 101 and the moving wheel 2 of the middle bottom plate 102 as 155mm, its tan(A)=10 / 155, and the degree of the angle A is 3.69 degrees. Since the initial angle of the hinge 4 is complementary to the angle A, the angle A is greater than 3.69 degrees, which meets the working conditions. In this embodiment, the angle A is 5 degrees.

[0047] At the same time, in this embodiment, the bottom surface of the negative pressure base pad 304 is provided with a rounded edge seal. The radius of the rounded edge seal needs to be greater than the height of the protrusion on the edge of the photovoltaic panel. By providing the rounded edge seal, when the base moves, when the adsorption unit 3 contacts the protrusion on the edge of the photovoltaic panel, the rounded edge seal is subjected to an upward force component, and the adsorption unit 3 will not abut against the protrusion on the edge of the photovoltaic panel, making it easier to pass over the protrusion on the photovoltaic panel.

[0048] It should be noted that the minimum spacing of the bottom surface of the negative pressure base pad 304 is greater than the gap between the photovoltaic panel arrays, ensuring that at most only one adsorption unit 3 fails when the base crosses the gap, thereby ensuring the effective adsorption force of the base.

[0049] Embodiment three:

[0050] This embodiment is different from the first embodiment in that the movable connection between the blocks of the bottom plate 1 adopts a sliding offset structure, such as Figure 7 As shown, the sliding offset structure includes a connecting rod 7 extending from the front and rear of the middle bottom plate 102, and a sliding hole is set on the connecting rod 7. The rear end of the front bottom plate 101 and the front end of the rear bottom plate 103 are respectively provided with connecting columns 8 perpendicular to the front bottom plate 101 and the rear bottom plate 103. The connecting column 8 is slidably passed through the sliding hole of the connecting rod 7, and the connection passes through the sliding hole and a limit block 81 is set at the end to prevent the connecting column 8 from slipping out of the connecting rod 7.

[0051] It should be noted that when the adsorption base of the photovoltaic panel cleaning device is adsorbed on a flat photovoltaic panel, the connecting rod 7 is located in the middle of the connecting column 8, allowing the connecting column 8 to slide up or down. At this time, when the base needs to cross the seam, the front bottom plate 101 is raised and moved up relative to the middle bottom plate 102 through the connecting column 8, such as Figure 8 As shown, the front bottom plate 101 will not have an elevation angle, and after crossing the seam, it will move downward relative to the middle bottom plate 102, and will not have a depression angle, and will not affect the adsorption effect of the front bottom plate 101 and the rear bottom plate 103. Similarly, when the middle bottom plate 102 crosses the seam, the middle bottom plate 102 is lifted up by the edge protrusion of the photovoltaic panel, and the connecting rod 7 slides up along the connecting column 8, and then moves upward relative to the front bottom plate 101 and the rear bottom plate 103, and will not have an inclination angle or a depression angle. The same is true for the rear bottom plate 103.

[0052] Furthermore, a plurality of connecting rods 7 are evenly arranged on the middle bottom plate 102, and a plurality of connecting columns 8 are slidably passed through one connecting rod 7, so as to improve the stability of the relative up-and-down displacement between the bottom plates.

[0053] Embodiment 4:

[0054] Based on the above embodiments, Figure 1 As shown, since the bottom plate 1 needs to be equipped with other cleaning equipment, in order to enable the bottom plate 1 loaded with the cleaning equipment to be firmly adsorbed on the photovoltaic panel, the force generated by its adsorption unit 3 is large enough to make the bottom plate firmly adsorbed on the photovoltaic panel. Since this bottom plate is generally used in the field of photovoltaic panel cleaning, the surface of the photovoltaic panel is relatively smooth after cleaning, and the friction of a simple roller is insufficient, and it is easy to slip. Therefore, this embodiment provides a specific synchronous wheel group setting method based on the above scheme. The synchronous wheel group is arranged along the length direction of the bottom plate 1 and two groups are symmetrically arranged on the bottom plate 1. The two groups of synchronous wheel groups are driven by two motors 5 respectively. And a single synchronous wheel group includes a front synchronous pulley and a rear synchronous pulley, and the front synchronous pulley and the rear synchronous pulley are externally sleeved with a rubber belt. A small synchronous wheel is also arranged between the front synchronous pulley and the rear synchronous pulley, and the small synchronous wheel abuts against the inner side of the rubber belt close to the photovoltaic panel to increase the pressure of the rubber belt when it contacts the photovoltaic panel and improve the friction.

[0055] It should be noted that the front synchronous pulley, the rear synchronous pulley and the small synchronous pulley are installed on the support frame, and the support frame is detachably connected to the base by bolt connection and other means, and in order to ensure that the rubber belt does not slip due to relaxation during operation, it is necessary to be able to adjust the tension of the rubber belt, therefore, the rotating shaft of the front synchronous pulley or the rear synchronous pulley is slidably set on the support frame, and a rotatably connected adjustable sliding block is used as a limiting structure to control the sliding of the rotating shaft of the front synchronous pulley or the rear synchronous pulley on the support frame, and locate the distance between the front synchronous pulley and the rear synchronous pulley. The rotating shaft of the synchronous pulley or the rear synchronous pulley can be slidably set on the support frame, or there can be only one sliding setting. In order to simplify the structure, only one adjustable setting of the synchronous pulley is set, and it is preferred to fix the driving wheel connected to the motor 5, and the driven wheel is set to slide along the slide groove.

[0056] Since the synchronous pulley has a sufficiently large friction force, the distance between the two synchronous wheels in the synchronous pulley is generally larger than the diameter of a single negative pressure pad 304. In this embodiment, when combined with the second embodiment, a synchronous pulley is set on the middle bottom plate 102. When the middle bottom plate 102 crosses the seam, the synchronous pulley will first contact the edge protrusion of the photovoltaic panel, and the middle bottom plate 102 will generate an elevation angle in advance, and this elevation angle cannot be eliminated by increasing the stroke of the adsorption pad, which may cause the adsorption unit 3 on the middle bottom plate 102 to release the adsorption state in advance. By rotating the adsorption unit 3 on the bottom plate, even if the bottom plate generates an elevation angle, the effective adsorption of the adsorption unit 3 here is achieved with the cooperation of the adsorption unit 3 that can adjust the angle and the adsorption pad whose adsorption stroke can be extended, thereby avoiding the risk of multiple adsorption units 3 failing at the same time.

[0057] It should be noted that the rotation axis of the adsorption unit 3 on the base is perpendicular to the moving direction of the bottom plate 1 and is on the plane of the bottom plate 1 .

[0058] Embodiment 4:

[0059] A cleaning device, such as Fig. 9 As shown, it includes an adsorption base of a photovoltaic panel cleaning device in the above embodiment, and a cleaning brush head 9 and a power unit are arranged on the base, wherein the power unit provides the power required by each component, and a housing 10 with a protective function is arranged on the outermost portion. By arranging the cleaning brush head 9 and the power unit on the base, the function of being able to fit and move on the inclined photovoltaic panel and perform a cross-seam action is achieved.

[0060] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention.

Claims

1. An adsorption base for a photovoltaic panel cleaning device, characterized in that: It comprises a bottom plate (1), on which a moving wheel (2) is arranged, and the bottom plate (1) comprises a plurality of bottom plate (1) blocks which are movably connected in sequence, and on which each bottom plate (1) block is arranged an adsorption unit (3).

2. The adsorption base of a photovoltaic panel cleaning device according to claim 1, characterized in that: The adsorption unit (3) comprises an impeller (301) driven by a brushless motor (5) and a mounting seat (302); the bottom surface of the mounting seat (302) is provided with an air suction through hole (303); the bottom of the mounting seat (302) is connected to a negative pressure base pad (304) with a through hole; the height of the negative pressure base pad (304) is lower than the height of the bottom plate (1); when the through hole of the negative pressure base pad (304) is blocked and the impeller (301) rotates, a negative pressure area can be formed between the negative pressure base pad (304) and the adsorption through hole.

3. The adsorption base of the photovoltaic panel cleaning device according to claim 2, characterized in that: The bottom surface of the mounting seat (302) is provided with a bottom pad slide groove (305) around the adsorption through hole, and the negative pressure bottom pad (304) is provided with a mounting ridge (306) corresponding to the bottom pad slide groove (305), and the mounting ridge (306) is slidably inserted in the bottom pad slide groove (305).

4. The adsorption base of the photovoltaic panel cleaning device according to claim 3, characterized in that: The bottom surface of the negative pressure base pad (304) is provided with a rounded edge seal in the circumferential direction.

5. The adsorption base of the photovoltaic panel cleaning device according to claim 3, characterized in that: The minimum spacing of the bottom surface of the negative pressure base pad (304) is greater than the gap between the photovoltaic panel arrays.

6. The adsorption base of the photovoltaic panel cleaning device according to claim 3, characterized in that: The moving wheel (2) is a synchronous pulley, which is arranged on the base plate (1) of the synchronous pulley. The adsorption unit (3) is rotatably connected to the base plate (1), and the rotation axis of the adsorption unit (3) is perpendicular to the moving direction of the base plate (1).

7. The adsorption base of a photovoltaic panel cleaning device according to claim 2, characterized in that: The adsorption unit (3) further comprises a driving protection shell (307) and a gas guide cover (308).

8. The adsorption base of a photovoltaic panel cleaning device according to claim 1, characterized in that: The multi-segment bottom plate (1) comprises a front bottom plate (101), a middle bottom plate (102) and a rear bottom plate (103), and the front bottom plate (101), the middle bottom plate (102) and the rear bottom plate (103) are rotatably connected in sequence.

9. The adsorption base of the photovoltaic panel cleaning device according to claim 8, characterized in that: Alternatively, the multi-segment bottom plate (1) comprises a front bottom plate (101), a middle bottom plate (102) and a rear bottom plate (103), and the planes on which the front bottom plate (101), the middle bottom plate (102) and the rear bottom plate (103) are located are parallel and the distance between the planes is adjustable.

10. A cleaning device, characterized in that: A suction base for a photovoltaic panel cleaning device comprising any one of claims 1 to 9.

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