Photovoltaic panel dirt cleaning device

Abstract

The utility model belongs to the technical field of photovoltaic panel dust removal, and discloses a photovoltaic panel dirt cleaning device which comprises a moving machine body capable of moving on the surface of a photovoltaic panel, a plurality of dirt cleaning assemblies are arranged on the side, close to the surface of the photovoltaic panel, of the moving machine body, and each dirt cleaning assembly comprises a dirt scraping plate. The dirt scraping plate is used for scraping dirt on the surface of the photovoltaic panel along with the moving machine body; one side of the dirt scraping plate is connected with an ejector rod, the ejector rod is in sliding connection with the moving machine body in the height direction, one side of the ejector rod is provided with a locking assembly, and when the moving machine body does not pass through raised dirt, the locking assembly locks the ejector rod to the first position of the moving machine body; enabling the dirt scraping plate to be far away from the surface of the photovoltaic panel; and when the moving machine body passes through the raised dirt, the ejector rod slides to a second position of the moving machine body in the height direction, so that one side of the dirt scraping plate is in contact with the surface of the photovoltaic panel, and the dirt is scraped.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaic panel dust removal, and in particular relates to a photovoltaic panel dirt cleaning device. Background Art

[0002] Photovoltaic panels have gradually become one of the most promising new energy projects in my country due to their high power generation efficiency and low maintenance costs. However, photovoltaic panels are often installed in wild areas such as deserts and plains, and their surfaces are easily contaminated by bird droppings, compacted sand and other dirt. The dirt is distributed in patches on the surface of photovoltaic panels and continues to accumulate, eventually affecting the power generation efficiency of photovoltaic panels.

[0003] In the prior art, a Chinese utility model with publication number CN219068149U discloses a photovoltaic bracket with a cleaning function. After the photovoltaic panel is installed on the photovoltaic bracket body, the motor on one side of the photovoltaic bracket body drives the moving block connected thereto through components such as a screw rod and a slider, so that the first scraper installed on the inner side of the moving block and in contact with the surface of the photovoltaic panel scrapes off the dirt on the surface of the photovoltaic panel. Since the first scraper needs to sweep the photovoltaic panel in its entirety to achieve the effect of cleaning the dirt, and when the dirt on the surface of the photovoltaic panel is less and unevenly distributed, the first scraper will continuously rub against the surface of the photovoltaic panel during the cleaning process. Therefore, during the process of the device cleaning the dirt on the photovoltaic panel, the first scraper is prone to wear, resulting in a shortened service life, and long-term use is prone to damage the surface material of the photovoltaic panel, resulting in insufficient surface flatness of the photovoltaic panel, affecting the power generation efficiency. Summary of the invention

[0004] Based on the above background technology needs, the utility model discloses a photovoltaic panel dirt cleaning device, which is used to solve the problem that during the above-mentioned device's cleaning operation of photovoltaic panel dirt, the first scraper is easily worn out, resulting in a shortened service life, and the surface material of the photovoltaic panel is easily damaged by long-term use, resulting in insufficient surface flatness of the photovoltaic panel, thereby affecting the power generation efficiency.

[0005] In order to achieve the above object, the technical solution of the utility model is:

[0006] A photovoltaic panel dirt cleaning device comprises: a mobile body, which is used to cover the surface of a photovoltaic panel and can move on the surface of the photovoltaic panel; the mobile body is provided with a plurality of dirt removal components arranged on one side adjacent to the surface of the photovoltaic panel, the dirt removal components comprising a dirt scraping plate, the dirt scraping plate being used to scrape dirt on the surface of the photovoltaic panel along with the mobile body; a push rod is connected to one side of the dirt scraping plate, the push rod is slidably connected to the mobile body in a height direction, a locking assembly is arranged on one side of the push rod, when the locking assembly is in a first state, the push rod is locked in a first position of the mobile body, so that the dirt scraping plate is away from the surface of the photovoltaic panel; when the locking assembly is in a second state, the push rod slides to the second position of the mobile body in a height direction, so that one side of the dirt scraping plate contacts the surface of the photovoltaic panel.

[0007] Preferably, the locking assembly includes a driving shaft, a plurality of cams and a braking portion, the cam is slidably connected to the driving shaft, a limiting hole is provided on one side of the cam toward the driving shaft, a first slider is slidably connected in the limiting hole, the driving shaft is connected to a first spring relative to the limiting hole, a second slider is connected to one end of the first spring adjacent to the first slider, the second slider is slidably connected to the first slider, the second slider is slidably connected to the driving shaft, one side of the push rod is slidably connected to the cam, and the braking portion is slidably connected to the cam, when one side of the braking portion slides into the limiting hole, the cam locks the push rod in the first position of the mobile body; when the braking portion is located outside the limiting hole, the push rod slides along the cam to the second position of the mobile body.

[0008] Preferably, the braking part includes a follower wheel, a rotating rod and a second spring, the rotating rod is rotatably connected to the mobile body adjacent to the cam, the follower wheel is rotatably arranged at the end of the rotating rod away from the cam, and the follower wheel can roll along the photovoltaic panel with the mobile body; the two ends of the second spring are respectively fixedly connected to the end of the rotating rod adjacent to the cam and the mobile body, a braking bump is arranged on one side of the rotating rod, and the second spring is used to keep the braking bump in sliding connection with the cam.

[0009] Preferably, a third spring is connected to one side of the push rod, and the third spring is connected to the mobile body away from the side of the push rod, and the third spring is used to push the push rod to slide from the first position of the mobile body to the second position along the height direction.

[0010] Preferably, the mobile body is provided with a driving part, and the driving part is used to drive the mobile body to move along the photovoltaic panel, and the driving shaft is in driving connection with the driving part.

[0011] Preferably, the dirt removal component also includes an infusion tube, a nozzle and a spray trigger rod, the infusion tube is fixed to one side of the dirt scraper plate, cleaning liquid is pre-stored in the infusion tube, and a piston push rod is slidably connected to the inner side of the infusion tube, the liquid outlet of the infusion tube is connected to the nozzle, the spray trigger rod is swingably connected to the outer side of the infusion tube, and one end of the spray trigger rod is hinged to the piston push rod, and the spray trigger rod is used to push the piston push rod during rotation, so that the nozzle sprays cleaning liquid toward the photovoltaic panel.

[0012] Preferably, the nozzle is fixed to one side of the liquid spray trigger rod along the length extension direction of the liquid spray trigger rod, and the nozzle is connected to the liquid outlet of the infusion tube through a water supply hose.

[0013] Preferably, a one-way valve is provided between the liquid outlet of the liquid storage tank and the liquid inlet of the infusion tube, and the flow direction of the one-way valve is toward the infusion tube.

[0014] By adopting the above technical solution, compared with the prior art, the utility model has at least the following beneficial effects:

[0015] A plurality of dirt scraping plates are arranged in a line along the direction extending along the width of the photovoltaic panel, and each of the dirt scraping plates is driven by an independent locking assembly, so that when the mobile body moves along the photovoltaic panel, the locking assembly will move the dirt scraping plate downward and scrape the dirt only when it passes through raised dirt; when it does not pass through dirt, the locking assembly locks the dirt scraping plate in a position away from the surface of the photovoltaic panel. This device greatly reduces the contact time between the dirt scraping plate and the photovoltaic panel, while ensuring a certain cleaning ability for dirt with obvious raised surfaces such as bird droppings, it reduces the loss of the dirt scraping plate and the damage to the photovoltaic panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the structure of a photovoltaic panel surface dirt cleaning device in an embodiment when it is in a locked state.

[0017] Figure 2 Schematic diagram of the structure of a photovoltaic panel surface dirt cleaning device in an embodiment when it is in an unlocked state.

[0018] Figure 3 It is a partial enlarged schematic diagram of a moving body in one embodiment.

[0019] Figure 4 It is a schematic diagram of the installation of a mobile body and a photovoltaic panel in one embodiment.

[0020] In the figure: a mobile body 10, a driving part 11, a driving motor 111, a driving card wheel 112, a bevel gear set 113, a controller 114, a transmission belt 115, a liquid storage tank 12, a photovoltaic panel 20, a dirt removal component 30, a dirt scraping plate 31, a push rod 311, a third spring 312, an infusion tube 32, a piston push rod 321, a one-way valve 322, a nozzle 33, a water supply hose 331, a liquid spray trigger rod 34, a reset shaft 35, a locking component 40, a driving shaft 41, a first spring 411, a second slider 412, a cam 42, a limiting hole 421, a first slider 422, a braking part 43, a follower wheel 431, a rotating rod 432, a braking bump 433, and a second spring 434. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present invention can be combined with each other. The technical solution of the present invention will be further described below in conjunction with the drawings of the embodiments of the present invention, and the present invention is not limited to the following specific implementation methods.

[0022] It should be understood that the same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components. In the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "inner", "outer", "left", "right", "front", "back", "top", "bottom" and the like indicating directions or positional relationships, they are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the structure or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0023] The following is combined with Figure 1-4 The utility model is further described in detail with reference to specific embodiments.

[0024] Embodiment 1: A photovoltaic panel dirt cleaning device comprises a mobile body 10, which is used to cover the surface of a photovoltaic panel 20 and can move along one side of the photovoltaic panel 20; the mobile body 10 is arranged adjacent to one side of the surface of the photovoltaic panel 20 with a plurality of dirt removal components 30, the dirt removal components 30 comprising a dirt scraping plate 31, the dirt scraping plate 31 is used to follow the mobile body 10 during the movement to scrape the dirt raised on the surface of the photovoltaic panel 20; one side of the dirt scraping plate 31 is connected to a push rod 311, the push rod 311 is slidably connected to the mobile body 10 along the height direction, and one side of the push rod 311 is provided with a locking component 40, when the locking component 40 is in In the first state (the locking assembly 40 is in a locked state when it does not contact the raised dirt, i.e., the first state), the top rod 311 is locked at the first position of the mobile body 10 (a position away from the surface of the photovoltaic panel 20), so that the dirt scraping plate 31 is away from the surface of the photovoltaic panel 20; when the locking assembly 40 is in the second state (the locking assembly 40 is in an unlocked state after contacting the raised dirt, i.e., the second state), the lock on the top rod 311 in the height direction is released, so that the top rod 311 slides along the height direction to the second position of the mobile body 10 (a position close to the surface of the photovoltaic panel 20), so that one side of the dirt scraping plate 31 contacts the surface of the photovoltaic panel 20.

[0025] Specifically, the mobile body 10 is provided with a plurality of pairs of driving card wheels 112, and the driving card wheels 112 can be connected to both sides of the length direction of the photovoltaic panel 20 through rail components for directional movement such as tracks and card slots, so that the mobile body 10 can cover the surface of the photovoltaic panel 20 and travel along the length direction of the photovoltaic panel 20; the top rod 311 is a rod in the shape of an "n", one of the downwardly extending protrusions of the top rod 311 is connected to the upper end of the dirt scraping plate 31, and the other downwardly extending protrusion of the top rod 311 is slidably connected to the locking assembly 40; the locking assembly 40 is a mechanical structure with a transmission function composed of a reciprocating movement mechanism, and its purpose is: in the process of moving with the mobile body 10, when the mobile body 10 does not pass through the raised dirt, the locking assembly 40 keeps the top rod 311 in a lifted state (that is, the above-mentioned first state), and the top rod 311 keeps the dirt scraping plate 31 in a relatively upper position of the mobile body 10 (that is, the above-mentioned first position), and at this position, the dirt The lower end of the dirt scraping plate 31 does not contact the surface of the photovoltaic panel 20, and will not be worn during the movement of the mobile body 10; when the mobile body 10 passes through the dirt, the locking assembly 40 relaxes the top rod 311 (i.e., the second state mentioned above), so that the top rod 311 slides downward to a relatively lower position of the mobile body 10 (i.e., the second position mentioned above), at which time the lower end of the dirt scraping plate 31 is in contact with the photovoltaic panel 20 and scrapes the raised dirt along with the mobile body 10; viewed from the bottom of the mobile body 10, a plurality of dirt scraping plates 31 are arranged in a "one" shape along the direction extending along the width of the photovoltaic panel 20, and each dirt scraping plate 31 is driven by an independent locking assembly 40, so that the device only removes the raised dirt during the movement along the photovoltaic panel 20, greatly reducing the contact time between the dirt scraping plate 31 and the photovoltaic panel 20, while ensuring a certain cleaning ability for dirt with obvious raised parts such as bird droppings, reducing its own loss and damage to the photovoltaic panel 20.

[0026] As some preferred implementations of this embodiment:

[0027] Furthermore, the locking assembly 40 includes a driving shaft 41, a plurality of cams 42 and a braking portion 43, wherein the cam 42 is slidably connected to the driving shaft 41, a limiting hole 421 is provided on one side of the cam 42 toward the driving shaft 41, a first slider 422 is slidably connected in the limiting hole 421, a first spring 411 is connected to the driving shaft 41 relative to the limiting hole 421, a second slider 412 is connected to one end of the first spring 411 adjacent to the first slider 422, the second slider 412 is slidably connected to the contact end of the first slider 422, and the second slider 412 is slidably connected to the driving shaft 41, one side of the push rod 311 is slidably connected to the upper part of the cam 42, and the braking portion 43 is slidably connected to the lower part of the cam 42, when one side of the braking portion 43 slides into the limiting hole 421, the cam 42 locks the push rod 311 in the first position of the mobile body 10; when the braking portion 43 is located outside the limiting hole 421, the push rod 311 slides along the cam 42 to the second position of the mobile body 10.

[0028] Specifically, the driving shaft 41 rotates continuously under the drive of a driving device such as a motor; a top block is provided on one side of the cam 42, and the contour of the edge of the top block is in the shape of "6", and the edge of the top block contacts one side of the top rod 311, and the edge of the top block is used as a path for the top rod 311 to slide along the cam 42 during the rotation of the cam 42; the braking part 43 is used to intermittently brake the cam 42 during the movement of the mobile body 10. When the mobile body 10 does not pass through the raised dirt, one side of the braking part 43 extends into the limiting hole 421, so that the first slider 422 remains in the position above the limiting hole 421, and the first slider 422 contacts the second slider 412 to compress the first spring 411 and is located in the gap between the cam 42 and the driving shaft 41. At this time, the driving shaft 41 cannot drive the cam 42 to rotate, and the highest position of the edge of the top block contacts the protrusion extending downward from the top rod 311, so that the top rod 311 is locked in the first position of the mobile body 10; when the mobile body 10 passes through the raised dirt The braking part 43 is disturbed by the dirt, and one side of it is separated from the limiting hole 421. The first slider 422 slides to the position below the limiting hole 421 under the action of gravity. The first slider 422 no longer continues to resist the second slider 412 upward. The second slider 412 extends downward into the limiting hole 421 under the elastic force of the first spring 411. At this time, the driving shaft 41 and the cam 42 are fixedly connected. The driving shaft 41 drives the cam 42 to rotate, and the top rod 311 slides downward along the edge of the top block to the second position, so that the dirt scraping plate 31 scrapes the dirt raised on the photovoltaic panel 20.

[0029] Furthermore, the braking part 43 includes a follower wheel 431, a rotating rod 432 and a second spring 434. The rotating rod 432 is rotatably connected to the mobile body 10 via a pin shaft adjacent to the lower side of the cam 42. The follower wheel 431 is arranged at the end of the rotating rod 432 away from the cam 42 via a bearing, and the follower wheel 431 can roll along the surface of the photovoltaic panel 20 with the mobile body 10; the two ends of the second spring 434 are respectively fixedly connected to the end of the rotating rod 432 adjacent to the cam 42 and the inner side of the mobile body 10, and a braking lug 433 is arranged at the end of the rotating rod 432 adjacent to the cam 42, and the second spring 434 is used to keep the braking lug 433 in sliding connection with the cam 42.

[0030] Specifically, the follower wheel 431 is used to roll along the surface of the photovoltaic panel 20 with the mobile body 10; the second spring 434 is located above or below the rotating rod 432 and connects one side of the rotating rod 432 to the inner side of the mobile body 10 in the height direction. When the follower wheel 431 contacts the dirt during rolling, the follower wheel 431 is lifted by the raised dirt and drives the rotating rod 432 to rotate. The rotating rod 432 stretches or compresses the second spring 434 under the action of the lever, and the braking protrusion 433 at one end of the rotating rod 432 away from the follower wheel 431 moves downward out of the limiting hole 421, so that the cam 42 is unlocked. From then on, the driving shaft 41 drives the cam 42 to rotate, so that the top rod 311 pushes the dirt scraping plate 31 downward to the second position; when the follower wheel 431 passes the dirt, the braking protrusion 433 moves along The rotating cam 42 slides on the outside, and during this process, the top rod 311 slides along the arc-shaped edge of the top block, so that the dirt scraper plate 31 remains in the second position; after the cam 42 rotates one circle, if the follower wheel 431 does not press over the dirt again, the rotating rod 432, under the elastic force of the second spring 434, causes the braking lug 433 to extend into the limiting hole 421 to brake the cam 42; the braking lug 433 pushes the first slider 422 to move the second slider 412 out of the limiting hole 421, and as the cam 42 stops again, the top block also locks the top rod 311 in the first position again, so that the dirt scraper 31 leaves the photovoltaic panel 20 again after scraping the dirt; if the follower wheel 431 continues to press over the raised dirt, the dirt scraper 31 continues to be unlocked and can remain in the second position to scrape the dirt.

[0031] Furthermore, a third spring 312 is connected to one side of the push rod 311, and the third spring 312 is connected to the mobile body 10 away from the side of the push rod 311. The third spring 312 is used to push the push rod 311 to slide from the first position of the mobile body 10 to the second position along the height direction.

[0032] When the above device is used, when the cam 42 rotates, the third spring 312 pushes the push rod 311 downward under the action of the elastic force, so that the push rod 311 slides along the edge path of the top block on one side of the cam 42, preventing the dirt scraping plate 31 from swinging during the dirt scraping process so that the push rod 311 is separated from the rotation path of the cam 42, thereby improving the matching reliability between the cam 42 and the push rod 311.

[0033] Furthermore, the mobile body 10 is provided with a driving part 11 , and the driving part 11 is used to drive the mobile body 10 to move along the photovoltaic panel 20 , and the driving shaft 41 is transmission-connected to the driving part 11 .

[0034] Specifically, the driving unit 11 includes a driving motor 111, a plurality of driving card wheels 112, a plurality of bevel gear sets 113 and a controller 114, wherein a card slot is provided on the rolling surface of the driving card wheel 112, and the axis of the driving card wheel 112 is rotatably connected with the mobile body 10 along the height direction, the driving motor 111 is arranged inside the mobile body 10, and is connected to at least one pair of driving card wheels 112 through a bevel gear set 113 composed of vertical bevel gears meshing; the card slot of the driving card wheel 112 is clamped on On both sides of the photovoltaic panel 20 extending in the length direction, the driving motor 111 drives the driving card wheel 112 to move along the length direction of the photovoltaic panel 20 through the bevel gear set 113, thereby driving the mobile body 10 to move; the controller 114 is electrically connected to the driving motor 111 and forms a control loop to control the speed, turning time, rotation time and other parameters of the driving motor 111, so that the driving motor 111 can control the mobile body 10 to move back and forth on the surface of the photovoltaic panel 20 or standby on one side of the photovoltaic panel 20 within a preset program.

[0035] A pair of driving card wheels 112 are connected to the driving shaft 41 through a bevel gear set 113 and a transmission belt 115. Specifically, the driving shaft 41 is connected to a first transmission wheel, and a bevel gear shaft on one side of the bevel gear set 113 is connected to a second transmission wheel. The first transmission wheel and the second transmission wheel are connected through a transmission belt 115. When the device is used, as the mobile body 10 moves, the driving card wheels 112 drive the driving shaft 41 to rotate, so as to drive the cam 42 to rotate at any time.

[0036] Embodiment 2: Based on Embodiment 1, Embodiment 2 is different from Embodiment 1 in the following aspects.

[0037] Preferably, the dirt removal component 30 further includes a liquid infusion tube 32, a nozzle 33 and a liquid spray trigger rod 34. The liquid infusion tube 32 is fixed to the front side of the dirt scraper plate 31. Cleaning liquid is pre-stored in the liquid infusion tube 32, and a piston push rod 321 is slidably connected to the inner side of the liquid infusion tube 32. The liquid outlet of the liquid infusion tube 32 is connected to the nozzle 33. The liquid spray trigger rod 34 is swingably connected to the outer side of the liquid infusion tube 32, and one end of the liquid spray trigger rod 34 is hinged to the piston push rod 321. The liquid spray trigger rod 34 is used to push the piston push rod 321 during rotation, so that the nozzle 33 sprays cleaning liquid toward the photovoltaic panel 20.

[0038] Specifically, the liquid infusion tube 32 and the piston push rod 321 form a chamber for storing liquid, in which a certain amount of water or a cleaning liquid for cleaning dirt such as bird droppings and sand on the photovoltaic panel 20 is pre-stored; the liquid spray trigger rod 34 is a rod with a thin stick-shaped upper end and a flat plate-shaped lower end. The thinner upper end can save the gap range required for rotation, and the flat plate-shaped lower end can increase the contact area with the dirt, so that the liquid spray trigger rod 34 is triggered to rotate by the dirt; the liquid spray trigger rod 34 is reset by the reset shaft 35 (such as the utility model disclosed in the publication number CN201730957U) A reset shaft disclosed in the type is fixed to the lower outer side of the infusion tube 32, and a rotation reset device is arranged between the free end and the fixed end so that the deflected free end can be rotated back to the initial position. When the spray trigger rod 34 is in the initial position, the spray trigger rod 34 extends downward in the vertical direction, and the lower end can be close to the surface of the photovoltaic panel 20, but does not contact the photovoltaic panel 20; the nozzle 33 faces the surface of the photovoltaic panel 20 and is located in front of the spray trigger rod 34; but after the spray trigger rod 34 passes through the dirt, it can be rotated back to the initial position through the reset shaft 35.

[0039] When the above device is used, as the follower wheel 431 presses over the raised dirt, the dirt scraping plate 31 moves downward, driving the lower end of the liquid spray trigger rod 34 close to the surface of the photovoltaic panel 20. When the liquid spray trigger rod 34 touches the dirt in the process of moving forward with the mobile body 10, it is blocked by the dirt and rotates backward, and pushes the piston push rod 321 to move forward, and the compressed cleaning liquid is sprayed to the dirt through the nozzle 33, so as to soften the dirt or destroy the stickiness of the dirt; then the dirt scraping plate 31 scrapes off the dirt softened or dispersed by the cleaning liquid, so as to wipe off the dirt and the residual cleaning liquid, so as to keep the surface of the photovoltaic panel 20 clean. In the process of cleaning the dirt, spraying the cleaning liquid to the dirt not only improves the efficiency of the dirt scraping plate 31 in removing stubborn dirt, but also has a lubricating effect on the surface of the photovoltaic panel 20, which can reduce the wear of the dirt scraping plate 31 and the wear of the photovoltaic panel 20.

[0040] Furthermore, the nozzle 33 is fixed to the front side of the liquid spray trigger rod 34 along the length extension direction of the liquid spray trigger rod 34 , and the nozzle 33 is connected to the liquid outlet of the liquid infusion tube 32 through the water supply hose 331 .

[0041] When the above device is used, when the lower end of the liquid spray trigger rod 34 is gradually deflected backwards by the dirt during the process of passing through the dirt, the nozzle 33 located at the front side of the liquid spray trigger rod 34 can rotate with the liquid spray trigger rod 34 during this process, so that the nozzle 33 can always aim at the dirt at the lower end of the liquid spray trigger rod 34 for spraying, thereby improving the spraying range and accuracy of the cleaning liquid, thereby increasing the area of ​​the dirt that can be sprayed and soaked by the cleaning liquid, and increasing the probability of removing stubborn dirt.

[0042] Furthermore, a liquid storage tank 12 is disposed in the mobile body 10 , and a liquid outlet of the liquid storage tank 12 is connected to a liquid inlet of the liquid infusion tube 32 .

[0043] Specifically, the liquid storage tank 12 is provided with a cleaning liquid addition port outside the mobile body 10 to ensure that there is sufficient cleaning liquid for use; a booster device can be provided between the liquid storage tank 12 and the infusion pipe 32, or the liquid storage tank 12 can be provided above the infusion pipe 32, so that the liquid storage tank 12 can transport cleaning liquid to the infusion pipe 32 after the spraying is completed.

[0044] When using the above device, when the pre-stored cleaning liquid in the infusion tube 32 is sprayed out, the infusion tube 32 is in a low-pressure state. As the spray trigger rod 34 swings back to the initial position around the reset shaft 35, the piston push rod 321 is driven to retreat, so that the infusion tube 32 absorbs the cleaning liquid from the liquid storage tank 12.

[0045] Furthermore, a one-way valve 322 is provided between the liquid outlet of the liquid storage tank 12 and the liquid inlet of the liquid infusion tube 32 , and the flow direction of the one-way valve 322 is toward the liquid infusion tube 32 .

[0046] When the above device is used, the one-way valve 322 allows the cleaning liquid to flow from the liquid storage tank 12 to the liquid infusion tube 32 and then be sprayed out from the liquid infusion tube 32 through the nozzle 33, thereby achieving the effect of increasing the pressure of the nozzle 33.

[0047] Through the above implementation, at least the following technical effects are achieved:

[0048] A plurality of dirt scraping plates 31 are arranged in a line along the direction extending from the width of the photovoltaic panel 20, and each dirt scraping plate 31 is driven by an independent locking assembly 40, so that when the device moves along the photovoltaic panel 20, the locking assembly 40 moves the dirt scraping plate 31 downward and scrapes the dirt only when passing through raised dirt; when not passing through dirt, the locking assembly 40 locks the dirt scraping plate 31 in a position away from the surface of the photovoltaic panel 20. The device greatly reduces the contact time between the dirt scraping plate 31 and the photovoltaic panel 20, while ensuring a certain cleaning ability for dirt with obvious raised parts such as bird droppings, and reduces the loss of the dirt scraping plate 31 and the damage to the photovoltaic panel 20.

[0049] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A photovoltaic panel dirt cleaning device, characterized in that: include: A mobile body is used to cover the surface of a photovoltaic panel and can move along one side of the photovoltaic panel; the mobile body is provided with a plurality of dirt removal components arranged adjacent to one side of the photovoltaic panel surface, the dirt removal components include a dirt scraping plate, and the dirt scraping plate is used to scrape dirt on the surface of the photovoltaic panel along with the mobile body; a push rod is connected to one side of the dirt scraping plate, the push rod is slidably connected to the mobile body along the height direction, and a locking component is provided on one side of the push rod, when the locking component is in a first state, the push rod is locked in a first position of the mobile body, so that the dirt scraping plate is away from the photovoltaic panel surface; when the locking component is in a second state, the push rod slides to the second position of the mobile body along the height direction, so that one side of the dirt scraping plate contacts the photovoltaic panel surface.

2. The photovoltaic panel dirt cleaning device according to claim 1, characterized in that: The locking assembly includes a driving shaft, a plurality of cams and a braking portion, the cam is slidably connected to the driving shaft, a limiting hole is provided on one side of the cam toward the driving shaft, a first slider is slidably connected in the limiting hole, the driving shaft is connected to a first spring relative to the limiting hole, a second slider is connected to one end of the first spring adjacent to the first slider, the second slider is slidably connected to the first slider, the second slider is slidably connected to the driving shaft, one side of the push rod is slidably connected to the cam, and the braking portion is slidably connected to the cam, when one side of the braking portion slides into the limiting hole, the cam locks the push rod in the first position of the mobile body; when the braking portion is located outside the limiting hole, the push rod slides along the cam to the second position of the mobile body.

3. The photovoltaic panel dirt cleaning device according to claim 2, characterized in that: The braking part includes a follower wheel, a rotating rod and a second spring. The rotating rod is rotatably connected to the mobile body at one side adjacent to the cam. The follower wheel is rotatably arranged at an end of the rotating rod away from the cam, and the follower wheel can roll along the photovoltaic panel with the mobile body. The two ends of the second spring are respectively fixedly connected to the end of the rotating rod adjacent to the cam and the mobile body. A braking bump is arranged on one side of the rotating rod, and the second spring is used to keep the braking bump in sliding connection with the cam.

4. The photovoltaic panel dirt cleaning device according to claim 3, characterized in that: A third spring is connected to one side of the push rod, and the third spring is connected to the mobile body away from the side of the push rod. The third spring is used to push the push rod to slide from the first position of the mobile body to the second position along the height direction.

5. The photovoltaic panel dirt cleaning device according to claim 2, characterized in that: The mobile body is provided with a driving part, and the driving part is used to drive the mobile body to move along the photovoltaic panel, and the driving shaft is transmission-connected with the driving part.

6. The photovoltaic panel dirt cleaning device according to claim 1, characterized in that: The dirt removal component also includes an infusion tube, a nozzle and a spray trigger rod. The infusion tube is fixed to one side of the dirt scraper plate. Cleaning liquid is pre-stored in the infusion tube, and a piston push rod is slidably connected to the inner side of the infusion tube. The liquid outlet of the infusion tube is connected to the nozzle, and the spray trigger rod is swingably connected to the outer side of the infusion tube, and one end of the spray trigger rod is hinged to the piston push rod. The spray trigger rod is used to push the piston push rod during rotation, so that the nozzle sprays cleaning liquid toward the photovoltaic panel.

7. The photovoltaic panel dirt cleaning device according to claim 6, characterized in that: The nozzle is fixed to one side of the liquid spray trigger rod along the length extension direction of the liquid spray trigger rod, and the nozzle is communicated with the liquid outlet of the liquid infusion tube through a water supply hose.

8. The photovoltaic panel dirt cleaning device according to claim 7, characterized in that: A liquid storage tank is arranged in the mobile body, and a liquid outlet of the liquid storage tank is communicated with a liquid inlet of the infusion tube.

9. The photovoltaic panel dirt cleaning device according to claim 8, characterized in that: A one-way valve is arranged between the liquid outlet of the liquid storage box and the liquid inlet of the liquid infusion tube, and the flow direction of the one-way valve is toward the liquid infusion tube.

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