Photovoltaic panel automatic cleaning device based on wind power driving

Abstract

The invention relates to a photovoltaic panel automatic cleaning device based on wind power driving, comprising: a fan blade mounted above a photovoltaic panel and used for absorbing natural wind energy; the transmission device is connected with the fan blades; the cleaning main rod is arranged on the cleaning side of the photovoltaic panel; the guide rails are vertically arranged on the photovoltaic panel brackets on the two sides of the cleaning main rod respectively; the at least one cleaning module is fixed on the cleaning main rod; the transmission device is connected with the cleaning main rod, and the cleaning main rod is installed on the guide rail in a sliding mode. The fan blades are driven by wind energy to pull the cleaning main rod to move upwards along the guide rail through the transmission device. In the lifting process of the cleaning main rod, the cleaning module on the cleaning main rod rotates under the action of wind power, so that the surface of the photovoltaic panel is cleaned, energy can be saved through pure mechanical self-operation, and meanwhile the optimal cleaning effect adapting to different weathers can be achieved.

Description

TECHNICAL FIELD

[0001] The application relates to a wind-driven automatic cleaning device for photovoltaic panels and belongs to the technical field of photovoltaic panel cleaning. BACKGROUND

[0002] Solar photovoltaic panels are erected on rooftops or open spaces with sufficient sunlight. Because the surface of the photovoltaic panel cannot have any covering that blocks sunlight, dust in the air and sundries and dry leaves blown by the wind are easily deposited on the solar photovoltaic panel, which will seriously affect the light-receiving efficiency of the photovoltaic panel if not cleaned regularly.

[0003] At present, the installed capacity of photovoltaic power stations is growing rapidly, and the photovoltaic panel cleaning problem is gradually exposed. At present, photovoltaic panel cleaning mainly relies on manual cleaning, high-pressure water guns or mechanical brushing, which has the problems of high labor cost, water resource waste and the need for external energy. SUMMARY

[0004] In order to solve the above problems existing in the prior art, the application provides a wind-driven automatic cleaning device for photovoltaic panels, which can be self-operated and energy-saving, and can also achieve optimized cleaning effect suitable for different weather.

[0005] The technical scheme of the application is as follows:

[0006] A wind-driven automatic cleaning device for photovoltaic panels comprises: a fan blade installed above the photovoltaic panel for absorbing natural wind energy; a transmission device connected with the fan blade; a cleaning main rod arranged on the cleaning side of the photovoltaic panel; guide rails vertically arranged on the photovoltaic panel supports on both sides of the cleaning main rod; at least one cleaning module fixed to the cleaning main rod; the transmission device is connected with the cleaning main rod, and the cleaning main rod is slidably installed on the guide rails; the fan blade is driven by wind energy to pull the cleaning main rod to move upward along the guide rails through the transmission device; the cleaning module on the cleaning main rod rotates under the action of wind force during the lifting process, thereby cleaning the surface of the photovoltaic panel.

[0007] The transmission device comprises a winding shaft and a traction cable. The winding shaft is installed above the photovoltaic panel through a support rod, and the winding shaft is coaxially connected with the wind power input shaft of the fan blade. A cable groove is formed in the winding shaft, and the first end of the traction cable is fixed in the cable groove and the second end is connected with the upper end of the cleaning main rod. The transmission device further comprises a reset assembly. When the cleaning main rod rises to the top end along the guide rail, the reset assembly is used to make the cleaning main rod automatically fall to the bottom end along the guide rail under the action of gravity.

[0008] The reset assembly comprises a limiting block arranged outside the guide rail, a driving rod is arranged on the limiting block in a sliding mode, and a wedge-shaped driving block is connected between the two driving rods.

[0009] The cleaning module comprises a connecting rod arranged in a rotating mode on the cleaning main rod, an end of the connecting rod is connected with a cleaning frame, and a plurality of cleaning brushes are arranged on the end surface of the cleaning frame.

[0010] The cleaning module further comprises a wiper module, the wiper module comprises a wiper slot arranged in the cleaning frame, a wiper connecting rod is arranged in a sliding mode in the connecting rod, a wiper strip is arranged at an end of the wiper connecting rod, and the wiper strip is arranged in the wiper slot.

[0011] The switching module comprises a rain collecting frame, a sliding groove is arranged vertically on the outside of the cleaning main rod, the rain collecting frame is arranged in a sliding mode with the sliding groove, and a second spring is arranged between the rain collecting frame and the sliding groove.

[0012] The back of the guide rail is provided with a T-shaped sliding groove, a counterweight sliding block is arranged in the T-shaped sliding groove in a sliding mode, a fixed pulley is arranged at the top end of the guide rail, the top of the counterweight sliding block is connected with the first end of a steel cable, the steel cable is wound around the fixed pulley in an upward mode, and the second end of the steel cable is connected with the bottom lifting lug of the cleaning main rod.

[0013] The surface of the wiper strip is provided with a V-shaped flow guide groove.

[0014] The present application has the following advantages:

[0015] The application realizes the closed loop action of wind power driving rising, then automatic disengaging when reaching the top, and finally gravity resetting, and achieves the energy saving effect of pure mechanical self-operation; meanwhile, through the structure cooperation of the invention of the rain collecting frame water storage gravity downward pressing, driving the articulated rod linkage, and the rain wiper strip pop-up invention, the automatic switching of the sunny day brush rotation dust removal and the rainy day wiper deep scraping is realized, and the optimized cleaning effect of adapting to different weather is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a front view of the automatic cleaning device for the photovoltaic panel of the application;

[0017] Figure 2 is a structure diagram of the reset assembly of the application;

[0018] Figure 3 is a bottom view of the cleaning module of the application;

[0019] Figure 4 is a half sectional view of the cleaning main rod of the application;

[0020] Figure 5 is a schematic view of the switching module of the application;

[0021] Figure 6 is a rear view of the cleaning main rod of the application;

[0022] Figure 7 is a schematic view of the wedge-shaped block notch structure of the application.

[0023] The reference signs in the drawings are as follows:

[0024] 1, fan; 2, transmission device; 3, cleaning main rod; 4, guide rail; 6, cleaning module; 10, photovoltaic panel; 11, wind power input shaft; 21, winding shaft; 22, cable groove; 23, traction cable; 24, support rod; 25, pushing gap; 31, annular groove; 41, fixed pulley; 42, steel cable; 61, connecting rod; 62, cleaning frame; 63, cleaning brush; 64, axial slide; 65, rain collecting frame; 66, sliding groove; 67, second spring; 68, articulated rod; 71, limiting block; 72, driving rod; 73, wedge-shaped driving block; 74, first spring; 621, rain wiper groove; 622, rain wiper connecting rod; 623, rain wiper strip; 624, rotating block; 75, support plate; 76, third spring; 77, pull rope. DETAILED DESCRIPTION

[0025] The application will be described in detail below in combination with the drawings and specific embodiments.

[0026] Please refer to Figures 1 to 6 , the application provides a technical solution:

[0027] The wind-driven photovoltaic panel automatic cleaning device of the embodiment comprises: a fan blade 1 installed above a photovoltaic panel 10 for absorbing natural wind energy; a transmission device 2 connected with the fan blade 1; a cleaning main rod 3 arranged on the cleaning side of the photovoltaic panel 10; guide rails 4 vertically arranged on the photovoltaic panel 10 supports on both sides of the cleaning main rod 3 respectively; at least one cleaning module 6 fixed on the cleaning main rod 3; the transmission device 2 is connected with the cleaning main rod 3, and the cleaning main rod 3 is slidably installed on the guide rails 4; the fan blade 1 is pulled by the transmission device 2 to move upward along the guide rails 4 under the driving of wind energy; the cleaning module 6 on the cleaning main rod 3 rotates under the action of wind force in the lifting process, thereby cleaning the surface of the photovoltaic panel 10; specifically, the cleaning module 5 is composed of a flexible material that can be blown by wind force;

[0028] When the natural wind acts on the fan blade 1, it drives the fan blade 1 to rotate and output mechanical energy to the transmission device 2, and the transmission device 2 converts the rotary motion into traction to pull the cleaning main rod 3 to stably rise from the bottom initial position along the guide rails 4 on both sides, in the process, the wind force simultaneously acts on the surface of the flexible material of the cleaning module 6 to make it continuously swing or rotate, and the flexible material removes the dust on the surface of the photovoltaic panel 10 in a physical friction manner; when the cleaning main rod 3 rises to the top end of the guide rail 4, the transmission device 2 automatically releases the traction lock, and the cleaning main rod 3 slides downward to the bottom end along the guide rail under the action of its own weight to complete a single cleaning cycle; in rainy weather conditions, rainwater infiltrates the flexible material of the cleaning module 6 to enhance its adhesion to the panel surface, and the water flow flushing cooperates with the material swinging to improve the sludge removal efficiency, realizing all-weather self-adaptive cleaning without external energy input.

[0029] The transmission device 2 comprises a winding shaft 21 and a traction cable 23, the winding shaft 21 is installed above the photovoltaic panel 10 through a support rod 24, and the winding shaft 21 is coaxially connected with the wind power input shaft 11 of the fan blade 1, the winding shaft 21 is provided with a cable groove 22, the traction cable 23 is fixed at the first end in the cable groove 22, and the second end is connected with the upper end of the cleaning main rod 3; when the fan blade 1 rotates under the action of wind force, the winding shaft 21 is directly driven to rotate synchronously, the traction cable 23 is orderly wound along the spiral cable groove 22, and the cleaning main rod 3 is pulled to rise uniformly along the guide rail 4 through the vertical traction force; when the wind energy is weakened or disappears, the winding shaft 21 is kept in tension stability of the cable groove 22 by the reset elastic force of the first spring 74, so as to avoid the traction cable 23 from being unwound;

[0030] The transmission device 2 further comprises a reset assembly, which makes the cleaning main rod 3 automatically fall along the guide rail 4 to the bottom end under the action of gravity when the cleaning main rod 3 is lifted to the top end along the guide rail 4; the reset assembly comprises a limiting block 71 arranged outside the guide rail 4, a driving rod 72 is arranged on the limiting block 71 in a sliding manner, and a wedge-shaped driving block 73 is connected between the two driving rods 72; the winding shaft 21 is connected with the supporting rod 24 in a sliding and rotating manner, a first spring 74 is further arranged between the winding shaft 21 and the supporting rod 24, and the winding shaft 21 is circumferentially provided with a pushing gap 25; the wedge-shaped driving block 73 is moved upward and drives the winding shaft 21 to axially displace by cooperating with the pushing gap 25, so that the winding shaft 21 is disengaged from the meshing with the wind input shaft 11; specifically, when the cleaning main rod 3 is lifted to the top end of the guide rail 4, the driving rod 72 is impacted to push the wedge-shaped driving block 73 to move upward; the slope of the wedge-shaped block 73 is clamped into the pushing gap 25, so that the winding shaft 21 is forced to axially slide 3-5mm against the pressure of the first spring 74; at this time, the winding shaft 21 is disengaged from the meshing with the wind input shaft 11, and the wind power transmission is interrupted; the cleaning main rod 3 uniformly falls under gravity, and the traction cable 23 is reversely released; after the cleaning main rod 3 falls to the bottom end, the first spring 74 pushes the winding shaft 21 to reset to reengage the input shaft 11.

[0031] It should be noted that one end of the first spring 74 is not fixed on the supporting rod 24, but can be connected with the supporting rod 24 in a rotating manner through any existing structure, and here provides a scheme that one end of the first spring 74 is fixed on a rotating disc, and the other end is fixed on the winding shaft 21, and the rotating disc is connected with the supporting rod 24 in a rotating manner, so that the elasticity can be provided while the rotation is maintained.

[0032] As a preferred, a slot is arranged on the side wall of the wedge-shaped block 73, a supporting plate 75 is hinged in the slot, and a third spring 76 is arranged between the supporting plate 75 and the inner wall of the slot; when the slot is located inside the limiting block 71, the supporting plate 75 is extruded and accommodated in the inner wall of the slot; when the cleaning main rod 3 is lifted to the top end of the guide rail 4, the driving rod 72 is impacted to push the wedge-shaped driving block 73 to move upward, and then the slot is disengaged from the limiting block 71, so that the supporting plate 75 is released, that is, the supporting plate 75 and the wedge-shaped block 73 form an L shape, so that the top end of the wedge-shaped block 73 can be continuously clamped into the pushing gap 25, and meanwhile, a pull rope 77 is arranged between the bottom of the wedge-shaped block 73 and the cleaning main rod 3; when the winding shaft 21 is disengaged from the meshing with the wind input shaft 11, the cleaning main rod 3 uniformly falls under gravity until close to the bottom, at this time, the pull rope 77 is pulled tight, and a pulling force is provided by the gravitational acceleration of the cleaning main rod 3 to pull the pull rope 77, that is, the wedge-shaped block 73 is pulled downward, so that a pushing force is provided to the supporting plate 75, so that the supporting plate 75 is accommodated in the slot again, and then the reset is completed.

[0033] It is worth mentioning that the connection / disconnection between the winding shaft 21 and the wind input shaft 11 can be achieved in any way, such as through plug-in connection, magnetic connection, etc., as long as the above purpose can be achieved.

[0034] The cleaning module 6 comprises a connecting rod 61 rotatably arranged on the cleaning main rod 3, and the end of the connecting rod 61 is connected with a cleaning frame 62, and the end surface of the cleaning frame 62 is provided with a plurality of cleaning brushes 63; the cleaning frame 62 is in a fan type for being driven to rotate by wind force. When the cleaning main rod 3 is lifted along the guide rail 4, the natural wind acts on the curved surface of the fan type cleaning frame 62 to generate a pneumatic torque to drive the cleaning frame 62 to rotate around the axis of the connecting rod 61; the rotating cleaning brush 63 removes the dust on the surface of the photovoltaic panel 10 in a centrifugal sweeping manner, and the rotational inertia of the cleaning frame 62 enhances the dynamic contact force between the brush and the panel surface, thereby improving the dust removal efficiency.

[0035] The cleaning module 6 further comprises a wiper module, the wiper module comprises a cleaning frame 62 internally provided with a wiper groove 621, and the connecting rod 61 is internally slidably installed with a wiper connecting rod 622, and the end of the wiper connecting rod 622 is provided with a wiper strip 623, and the wiper strip 623 is located in the wiper groove 621; the cleaning main rod 3 is internally provided with an annular groove 31, the connecting rod 61 is axially provided with an axial sliding channel 64, the wiper connecting rod 622 is circumferentially provided with a rotating block 624, the rotating block 624 penetrates out of the axial sliding channel 64 and is matched and inserted with the annular groove 31; the wiper module further comprises a switching module for switching the cleaning mode in rainy days.

[0036] The switching module comprises a rain collecting frame 65, a sliding groove 66 is vertically arranged on the outside of the cleaning main rod 3, the rain collecting frame 65 is slidably arranged with the sliding groove 66, and a second spring 67 is arranged between the rain collecting frame 65 and the sliding groove 66; the connecting rod 61 is slidably arranged with the cleaning main rod 3, and one end of the connecting rod 61 penetrates out of the cleaning main rod 3, and a hinge rod 68 is hingedly connected between the top end of the rain collecting frame 65 and the end of the connecting rod 61 penetrating out of the cleaning main rod 3.

[0037] In normal state, the rotating block 624 is clamped into the annular groove 31, limiting the movement of the wiper connecting rod 622, and the wiper strip 623 is accommodated in the wiper groove 621; when the switching mechanism is triggered, that is, water is accumulated in the rain collecting frame 65, the gravity rises until the rain collecting frame 65 is pressed down, thereby causing the articulated rod 68 to pull the connecting rod 61 passing through one end of the cleaning main rod 3 to slide outward, at this time, the wiper connecting rod 622 is not moved, and the connecting rod 61 drives the cleaning brush 63 at the end to move backward, thereby exposing the wiper strip 623 in the wiper groove 621; it is worth mentioning that, in normal state, the cleaning module 6 is always attached to the surface of the photovoltaic panel due to the influence of the overall structure gravity, and because the end of the cleaning brush 63 can provide a certain supporting force, the wiper strip 623 is lifted by the end of the cleaning brush 63 and cannot contact the surface of the photovoltaic panel under the condition of no rain, and the purpose of this is: if the wiper strip 623 is always used for cleaning, because the dry friction coefficient is large on sunny days, problems such as hard particles (such as sand) embedded in the wiper strip 623 may occur, thereby scratching the surface of the photovoltaic panel glass, causing the light transmittance to decrease, or the wiper strip 623 may be cracked due to local stress concentration after long-term use; if the cleaning brush 63 is simply used for cleaning, problems such as mud attachment and residue may occur in rainy conditions; therefore, the combination of the two can better cope with various situations; in addition, when it rains, the cleaning brush 63 is pulled away from the photovoltaic panel, at this time, the end of the cleaning brush 63 cannot contact the surface of the photovoltaic panel, that is, there is no support, which will cause the cleaning main rod 3 to continue to be pressed down to the photovoltaic panel under the action of gravity, at this time, the wiper strip 623 can realize cleaning by contacting the surface of the photovoltaic panel.

[0038] The back of the guide rail 4 is provided with a T-shaped slide, and a counterweight sliding block is slidably embedded in the T-shaped slide. The top end of the guide rail 4 is provided with a fixed pulley 41. The top end of the counterweight sliding block is connected with the first end of a steel cable 42. The steel cable 42 passes over the fixed pulley 41 and is connected with the bottom lifting lug of the cleaning main rod 3. When the cleaning main rod 3 is pulled upward by the fan blade 1, the counterweight sliding block is pulled upward along the T-shaped slide by the steel cable 42, and the potential energy of the counterweight sliding block is converted into lifting power for the cleaning main rod 3. When the weight of the cleaning main rod 3 increases due to the accumulation of rainwater, the counterweight sliding block automatically slides downward, and the additional pulling force is transmitted through the steel cable 42 to offset the increased weight in real time, thereby ensuring the constant efficiency of the fan blade 1.

[0039] The surface of the wiper strip 623 is provided with a V-shaped flow guide groove. During the wiper process in rainy days, the rainwater forms a continuous water film along the V-shaped flow guide groove, so that a fluid lubricating layer is formed between the wiper strip 623 and the surface of the photovoltaic panel 10, the dry friction is converted into liquid film friction, and the friction resistance is reduced. At the same time, the flow guide groove guides the directional flow of the mud water, avoiding the accumulation of mud on the edge of the wiper strip, thereby avoiding secondary pollution.

[0040] The above merely illustrates the embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which are made by using the content of the present application specification and drawings, are also included in the patent protection scope of the present application.

Claims

1. A wind-driven photovoltaic panel automatic cleaning device, characterized in that, The utility model relates to a photovoltaic panel cleaning device, comprising: A fan blade (1) is installed above a photovoltaic panel (10) to absorb natural wind energy; A transmission device (2) is connected to the fan blade (1); a cleaning main rod (3) is arranged on the cleaning side of the photovoltaic panel (10); guide rails (4) are vertically arranged on the photovoltaic panel (10) supports on both sides of the cleaning main rod (3); at least one cleaning module (6) is fixed to the cleaning main rod (3); the transmission device (2) is connected to the cleaning main rod (3), and the cleaning main rod (3) is slidably installed on the guide rails (4); the fan blade (1) pulls the cleaning main rod (3) to move upwards along the guide rails (4) through the transmission device (2) under the drive of wind energy; the cleaning module (6) on the cleaning main rod (3) rotates under the action of wind force during the lifting process, thereby cleaning the surface of the photovoltaic panel (10).

2. A wind-driven photovoltaic panel automatic cleaning device according to claim 1, characterized in that: The transmission device (2) comprises a winding shaft (21) and a traction cable (23); the winding shaft (21) is installed above the photovoltaic panel (10) through a support rod (24), and the winding shaft (21) is coaxially connected to the wind input shaft (11) of the fan blade (1); a cable groove (22) is formed in the winding shaft (21); the traction cable (23) is fixed to the cable groove (22) at the first end and connected to the upper end of the cleaning main rod (3) at the second end; the transmission device (2) further comprises a reset assembly; when the cleaning main rod (3) is lifted to the top end along the guide rails (4), the reset assembly makes the cleaning main rod (3) automatically fall to the bottom end along the guide rails (4) under the action of gravity.

3. A wind-driven photovoltaic panel automatic cleaning device according to claim 2, characterized in that: The reset assembly comprises a limiting block (71) arranged outside the guide rails (4); a driving rod (72) is slidably arranged on the limiting block (71); a wedge-shaped driving block (73) is connected between the two driving rods (72); the winding shaft (21) is slidably connected to the support rod (24); a first spring (74) is arranged between the winding shaft (21) and the support rod (24); and a pushing gap (25) is arranged in the circumferential direction of the winding shaft (21); the wedge-shaped driving block (73) moves upwards and drives the winding shaft (21) to axially displace by cooperating with the pushing gap (25), so that the winding shaft (21) is disengaged from the wind input shaft (11).

4. A wind-driven photovoltaic panel automatic cleaning device according to claim 3, characterized in that: The cleaning module (6) comprises a connecting rod (61) rotatably arranged on the cleaning main rod (3); a cleaning frame (62) is connected to the end of the connecting rod (61); a plurality of cleaning brushes (63) are arranged on the end face of the cleaning frame (62); and the cleaning frame (62) is in the shape of a fan to rotate under the action of wind force.

5. A wind-driven photovoltaic panel automatic cleaning device according to claim 4, characterized in that: The cleaning module (6) further comprises a wiper module, the wiper module comprises a cleaning frame (62) internally provided with a wiper groove (621), a wiper connecting rod (622) is slidably installed in the connecting rod (61), the wiper connecting rod (622) is provided with a wiper strip (623) at the end, and the wiper strip (623) is located in the wiper groove (621); The cleaning main rod (3) is internally provided with an annular groove (31), the connecting rod (61) is axially provided with an axial sliding channel (64), the wiper connecting rod (622) is circumferentially provided with a rotating block (624), the rotating block (624) penetrates out of the axial sliding channel (64) and is matched and inserted into the annular groove (31); The wiper module further comprises a switching module for switching the cleaning mode in rainy days.

6. A wind-driven photovoltaic panel automatic cleaning device according to claim 5, characterized in that: The switching module comprises a rain collecting frame (65), a sliding groove (66) is vertically arranged on the outer side of the cleaning main rod (3), the rain collecting frame (65) is slidably arranged with the sliding groove (66), and a second spring (67) is arranged between the rain collecting frame (65) and the sliding groove (66); The connecting rod (61) is slidably arranged with the cleaning main rod (3), and one end of the connecting rod (61) penetrates out of the cleaning main rod (3), a hinge rod (68) is hinged between the top end of the rain collecting frame (65) and the end of the connecting rod (61) penetrating out of the cleaning main rod (3).

7. A wind-driven photovoltaic panel automatic cleaning device according to claim 6, characterized in that: The back of the guide rail (4) is provided with a T-shaped sliding channel, a counterweight sliding block is slidably embedded in the T-shaped sliding channel, a fixed pulley (41) is arranged at the top end of the guide rail (4), the top of the counterweight sliding block is connected with the first end of a steel cable (42), the steel cable (42) is upwardly wound around the fixed pulley (41), and the bottom lifting lug of the cleaning main rod (3) is connected with the end of the steel cable (42).

8. The wind-driven automatic cleaning device for photovoltaic panels according to claim 7, characterized in that: The surface of the wiper strip (623) is provided with a V-shaped flow guide groove.

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