Description:FIELD OF THE INVENTION
The present disclosure relates to the field of cleaning devices, and more particularly to a solar panel cleaning device.

BACKGROUND OF THE INVENTION
The subject matter discussed in the background section should not be assumed to be prior art merely as a result of its mention in the background section. Similarly, a problem mentioned in the background section or associated with the subject matter of the background section should not be assumed to have been previously recognized in the prior art. The subject matter in the background section merely represents different approaches, which in and of themselves may also correspond to implementations of the claimed technology.
Solar energy is the energy produced by radiation from the sun capable of producing heat, causing chemical reactions, or generating electricity. If suitably harnessed this highly diffused source has the potential to satisfy all future energy needs. In recent times, solar energy has become increasingly popular due to its renewable nature, inexhaustible supply, safe and secure maintenance and repair, and non-polluting character as compared to fossil fuels, petroleum, and natural gas.
A solar panel is a collection of solar or photovoltaic cells used to generate electricity from solar energy through the photovoltaic effect. The solar or photovoltaic cells are arranged in a grid-like pattern and housed in an enclosure known as a photovoltaic module or PV module within the solar panel. Therefore, a solar panel may further be described as a set of photovoltaic modules, mounted on a supporting structure. The proliferation of renewable energy solar panel devices has revolutionized various industries enabling cost-effective energy sources resulting in improved productivity and profitability.
However, the solar panels are continuously exposed to dust, debris, fungi, bird droppings, and environmental pollution, which may block the solar panels from fully receiving the sun’s ultraviolet rays. This may lead to a reduction in energy that may be produced by a solar system. Thus, there is a demand for regular cleaning of solar panel devices to ensure peak performance in terms of uninterrupted storage of solar energy to be utilized for commercial or personal use. Conventional solar panel cleaning techniques suffered drawbacks in terms of high water consumption, hazards of electrical shocks, risk of surface damage, and residue deposits due to prolonged use of chemicals or detergents leading to a gradual shift towards adoption of solar panel cleaning devices. One of the challenges associated with solar panel cleaning devices is suitability for all sized solar panels, adjustability, and falling short on optimal cleaning efficiency. Another challenge is the constant need for human intervention to monitor or clean the panels which is risky and tedious in harsh weather or when the panels are installed at a height.
An example of such a device is disclosed in Korean Patent Publication No KR101603532B1 which discloses an apparatus for cleaning and cooling a solar panel. It comprises components such as rails installed on upper and lower portions of a solar panel, respectively to be separated from the solar panel by a predetermined distance, a driving cart connected to both ends of the rails, moved horizontally on a surface of the solar panel through the rails, and configured to cool the surface of the solar panel, a head connected to the driving cart, moved vertically on the surface of the solar panel through the driving cart, and configured to clean the surface of the solar panel, and a station installed in one end of the rails and configured to supply power or water to the driving cart and the head when the driving cart is located in the station.
Another example of such a device is disclosed in European Patent No EP3984409 which discloses an apparatus for cleaning inclined surfaces, particularly of solar panels in operation. It comprises components including a frame that supports a brushing means adapted to act operatively against a surface to be cleaned and at least one spraying bar having a plurality of nozzles adapted to spray a washing fluid toward the surface, the frame being tiltable about a tilting axis. The spraying bar is mounted so that it can oscillate about an oscillation axis that lies on a centerline plane of the frame, to be automatically movable, upon the tilting of the frame, between a first operating position and a second operating position which are opposite with respect to the centerline plane.
However, such solar panel cleaning devices fall short in terms of flexibility in covering unpredictable panel lengths within definitive time frames in an industrial or commercial setup. Further, the limitation associated with such conventional solar panel cleaning devices is the adjustment of height and contact between the brush and the solar panels based on the condition of the solar panels and the type of cleaning requirement. Therefore, there remains a need in the art for an advanced solar panel cleaning device that may overcome the above-mentioned deficiencies and provide a viable and effective solution for a fast and hassle-free operation with low maintenance.

SUMMARY OF THE INVENTION
This summary is provided to introduce a selection of concepts in a simplified form that are further disclosed in the detailed description of the invention. This summary is not intended to identify essential inventive concepts of the claimed subject matter, nor is it intended to determine the scope of the claimed subject matter.
The present disclosure discloses a solar panel cleaning device that may be used to clean the surface of a solar panel. The solar panel cleaning device may comprise a mainframe having at least one elongated support member and at least one mounting assembly configured at each end of the elongated support member. The solar panel cleaning device may further comprise a brush connected between the mounting assembly configured at the ends of the elongated support member, and at least one roller belt assembly configured on the mounting assembly. The mounting assembly configured at each end of the elongated support member may further include one or more mounting members connected to the elongated support member, and one or more wheels connected to a lower surface of the one or the mounting member. The wheels may be connected parallel to an axis of the main frame. Further, the wheels may be provided to install the solar panel cleaning device over the array of solar panels and secure it there during the cleaning operation. Further, the wheels are provided for the solar panel cleaning device to move for cleaning the solar panels while being secured on the solar panels.
The solar panel cleaning device may further include at least one roller belt assembly configured for a traverse movement of the solar panel cleaning device over the solar panel. The solar panel cleaning device may further include an actuation assembly and a battery to power the roller belt assembly and the cleaning brush synchronously for the cleaning of the solar panels.
The solar panel cleaning device may further include a height adjustment mechanism configured on either or both ends of the main frame. The height adjustment mechanism may be configured to connect the cleaning brush to the main frame to enable adjustment of a height of the cleaning brush relative to the top surface of the solar panel when the solar panel cleaning device is mounted on an array of solar panels. The contact of the brush controlled by the height adjustment mechanism may enable a seamless, hassle-free cleaning of the solar panel surface. The solar panel cleaning device may further include a length adjustment mechanism.

BRIEF DESCRIPTION OF DRAWINGS
The detailed description is described with reference to the accompanying figures in the figures, the leftmost digits of a reference number identify the figure in which the reference number first appears. The same numbers are used throughout the drawings to refer like features and components.
FIG. 1 shows a perspective view of a solar panel cleaning device configured on a top surface of a solar panel, in accordance with an aspect of the present disclosure.
FIG. 2 shows a top perspective view of the solar panel cleaning device, in accordance with an embodiment of the present disclosure.
FIG. 3 is a perspective view of a mainframe of the solar panel cleaning device, in accordance with an embodiment of the present disclosure.
FIG 4. shows a perspective view of the solar panel cleaning device without a top enclosure, in accordance with an embodiment of the present disclosure.
FIG. 5 shows an exploded view of the solar panel cleaning device, in accordance with an aspect of the present disclosure.
FIG. 6 shows a left-side view showing a height adjustment mechanism of the solar panel cleaning device, in accordance with an embodiment of the present disclosure.
FIG. 7 shows a mounting assembly at one end of the solar panel cleaning device, in accordance with an embodiment of the present disclosure.
FIG. 8 shows the mounting assembly of the solar panel cleaning device as shown in FIG. 7 with a disassembled battery and control module, in accordance with an embodiment of the present disclosure.
FIG. 9 shows the mounting assembly at opposite end of the solar panel cleaning device, in accordance with an embodiment of the present disclosure.
FIG. 10 shows a cleaning brush, in accordance with an embodiment of the present disclosure.

DETAILED DESCRIPTION
The present invention overcomes the aforesaid drawbacks of the above, and other objects, features and advantages of the present invention will now be described in greater detail. Before the present apparatus and its components are described, it is to be understood that this disclosure is not limited to the particular apparatus and its arrangement as described, as there can be multiple possible embodiments that are not expressly illustrated in the present disclosure. It is also to be understood that the terminology used in the description is for the purpose of describing the particular versions or embodiments only and is not intended to limit the scope of the present application. This description is not intended to identify essential features of the claimed subject matter nor is it intended for use in detecting or limiting the scope of the claimed subject matter.
The present disclosure relates to a solar panel cleaning device 102. The solar panel cleaning device 102 is configured to traverse along the top surface of the solar panel 104 to clean the dirt and debris accumulated on the surface of the solar panel 104, the mechanism of which is illustrated in the following embodiments.
FIG. 1 illustrates a perspective view 100 of a solar panel cleaning device 102 configured on the top surface of a solar panel 104, as an illustrative configuration of the present disclosure. FIG. 2 illustrates a top perspective view 200 of a solar panel cleaning device 102, as an illustrative configuration of the present disclosure. It is to be well understood that the terms “solar panel cleaning device 102”, “solar panel cleaning robot 102”, and “cleaning device 102” may be used interchangeably, hereafter.
Referring to FIG. 1 and FIG. 2, the solar panel cleaning device 102 is configured to move on the top surface of the solar panel 104 to clean the dust and debris accumulated on the surface of the solar panel 104. The solar panel cleaning device 102 may be affixed on the solar panel 104 to move horizontally across an array of the solar panel 104 to clean the dust and debris from the surface of the solar panel 104. It is to be well understood that the plural terms “array of solar panel 104” and “solar panels 104” may be singularly referred to as “solar panel 104” and vice versa, hereinafter.
The solar panel cleaning device 102 may be removably secured on the array of the solar panel 104 from ends such that the device 102 may move on a border frame of the solar panel 104 to avoid damage to the power generation surface of the solar panels 104. The cleaning device 102 may include a mounting mechanism and actuating mechanism which will be explained later. The mounting mechanism enables the mounting of the cleaning device 102 on the border frame of the solar panels 104 and the actuating mechanism may be configured to move the cleaning device 102 to clean the array of solar panels 104. The actuating mechanism is also configured to move on the frame of the solar panels 104.
FIG. 3 is a perspective view of a mainframe 302 of the solar panel cleaning device 102, in accordance with an embodiment of the present disclosure. FIG. 4 shows a perspective view of the solar panel cleaning device 102 without a top enclosure 504, in accordance with an embodiment of the present disclosure. FIG. 5 shows an exploded view of the solar panel cleaning device 102, in accordance with an aspect of the present disclosure. FIG. 6 shows a left-side view showing a height adjustment mechanism 502 of solar panel cleaning device 102, in accordance with an embodiment of the present disclosure. FIG.7 shows a mounting assembly 306a at one end of the solar panel cleaning device 102, in accordance with an embodiment of the present disclosure. FIG.8 shows the mounting assembly 306a of the solar panel cleaning device 102 as shown in FIG. 7 with a disassembled battery and control module, in accordance with an embodiment of the present disclosure. FIG.9 shows the mounting assembly 306b at opposite end of the solar panel cleaning device 102, in accordance with an embodiment of the present disclosure. FIG 10 shows a cleaning brush 402, in accordance with an embodiment of the present disclosure.
In reference to FIG.3-9, the solar panel cleaning device 102 comprises a main frame 302 and at least one mounting assembly (306a and 306b) configured on each end of the mainframe 302. The mounting assembly (306a and 306b) of the solar panel cleaning device 102 may further comprise at least one mounting member (312a and 312b), and one or more wheels (314a and 314b) that may be connected parallel to an axis of the main frame 302. Further, the solar panel cleaning device 102 may comprise an actuation assembly 406 and a battery 506. Further, the solar panel cleaning device 102 may be configured with a center support structure that includes a parallel support members 308 mounted over the mainframe 302 and one or more wheels 310 connected to the parallel support member 308. The one or more wheels 310 are connected underneath the mainframe 302 to support the cleaning device 102 from a center.
Further, in reference to FIG.3, the mainframe 302 may comprise a set of elongated support member 304 configured parallel to each other and connected using a mounting assembly (306a and 306b) to form a frame to hold the components of the cleaning device 102. The mounting assembly (306a and 306b) is configured to connect each respective ends of the set of the elongated support member 304 forming a rectangular shaped main frame 302. The elongated support member 304 are the primary load-carrying members of the solar panel cleaning device 102. The plurality of elongated support member 304 may be made from high-performance industrial-grade materials. In an embodiment, the elongated support member 304 may be made from carbon steel. In a preferred embodiment, the elongated support member 304 may be made from aluminum alloys. The aluminum alloys may be used to reduce the overall weight of the solar panel cleaning device 102. Further, the elongated support member 304 may have a channel section or a double channel section. In a preferred embodiment, the elongated support member 304 may have a box section for better structural stability and load-carrying ability.
Further, in continued reference to the FIG.3, each of the mounting assembly (306a and 306b) may comprise plurality of mounting members (312a and 312b) connected parallel to each other and perpendicular to a length direction of the mainframe 302. Further, the mounting members (312a and 312b) are connected at a distance with each other to configure one or more components of the cleaning device 102 in between the mounting members.
The mounting assembly (306a and 306b) may further include one or more wheels (314a and 314b) connected at a lower surface of the mounting member (312a and 312b), parallel to an axis of the mainframe 302. The one or more wheels (314a and 314b) may be connected to the mounting assembly (306a and 306b) using a wheel support plate (316a and 316b).
The mounting members (312a and 312b) of the mounting assembly (306a and 306b) may be configured to support and hold the components of the solar panel cleaning device 102. The mounting members (312a and 312b) may be made from D-shaped plates configured with a plurality of apertures. The D-shaped plates of the mounting members (312a and 312b) maybe made from a metal sheet. The apertures of the mounting members (312a and 312b) may be used to connect the mounting members (312a and 312b) to the elongated support member 304 of the mainframe 302. Further, the mounting members (312a and 312b) may be configured to be in a connection with the removable cover 504. In an embodiment, the mounting members (312a and 312b) may be made from high-performance industrial grade materials. In an embodiment, the mounting members (312a and 312b) may be made from but not limited to alloy steel, stainless steel, carbon steel, galvanized steel, or aluminium. In a preferred embodiment, the mounting members (312a and 312b) may be made from aluminum alloy sheets for their lightweight properties.
In an embodiment the configuration of more than one mounting member (312a and 312b) enables better support for the components of the solar panel cleaning device 102 and make the mounting assembly (306a and 306b) sturdier and more durable.
Further, the cleaning device 102 comprises a roller belt assembly (404a and 404b) configured with the mounting assembly (306a and 306b) at the ends of the mainframe 302. The roller belt assembly (404a and 404b) is configured for linear movement of the cleaning device 102 over the solar panel 104. The roller belt assembly (404a and 404b) may be connected with the mounting members (312a and 312b). The roller belt assembly (404a and 404b) may be configured to make the cleaning device 102 move along the top surface of the solar panel 104. The roller belt assembly (404a and 404b) may comprise a track belt (510a and 510b) configured with a plurality of track belt roller wheels (512a and 512b) configured to support the track belt (510a and 510b). The track belt (510a and 510b) may receive the motion from the plurality of track belt roller wheels (512a and 512b).
Further, the roller belt assembly (404a and 404b) may be configured to provide better traction of the cleaning device 102 over the solar panel 104 top surface. In an embodiment, the track belt (510a and 510b) of the roller belt assembly (404a and 404b) may be made from any suitable type of rubber or synthetic material. In an embodiment, the track belt may be made from a synthetic rubber material. The synthetic rubber material of the track belt (510a and 510b) may prevent any damage to the solar panel 104 from the cleaning device (102). Further, the track belt roller wheels (512a and 512b) may be any suitable type of pulley wheels that may be able to support and rotate the track belt (510a and 510b).
Further, a plurality of side wheels (314a and 314b) may be configured on the mounting members (312a and 312b), configured to hold the cleaning device 102 over the solar panel 104 during the cleaning of the solar panel 104. The plurality of side wheels (314a and 314b) may be connected at a lower surface of the mounting members (312a and 312b), parallel to an axis of the main frame 302. The plurality of side wheels (314a and 314b) may enable a secure movement of the solar panel cleaning device 102 over the slanted solar panel 104 without slippage. The plurality of side wheels (314a and 314b) prevent slippage as they hold the cleaning device 102 through the edges of the slanted solar panel as seen in FIG.1.
Further, the cleaning device 102 comprises a cleaning brush 402 that may be configured between the mounting assembly (306a and 306b). The cleaning brush 402 may be connected between the mounting assembly (306a and 306b) through the mounting members (312a and 312b) in a length direction of the mainframe 302, parallel to the elongated support member 304. Further, the cleaning brush 402 is configured to rotate along with the roller belt assembly (404a and 404b). Further, cleaning brush 402 is configured to sweep away the dust and debris accumulated on the top surface of the solar panel 104.
Further, in reference to FIG. 5 and FIG. 6, a height adjustment mechanism 502 is configured on the mounting assembly (306a and 306b). The height adjustment mechanism 502 comprises a support frame 602, a lever 604 connected to the cleaning brush 402, a support frame apertures 606, and a lever aperture 608.
In a continued reference to FIG. 6, the lever 604 comprising the lever aperture 608 may be connected to the support frame 602 that includes a plurality of the support frame apertures 606. Further, one end of the lever 604 may be pivoted to the support frame 602. whereas, the other end of the lever 604 may be configured to move free and lock aligning one of the support frame apertures 606. The apertures 608 of the free end of the lever 604, may be matched with different apertures 606 of the support frame 602.
Further, the height of the cleaning brush 402 may be changed by bolting the aperture 608 at the free end of the lever 604 to the different apertures 606 of the support frame 602, to vary the height of the cleaning brush 402. In an embodiment, the aperture 608 at the free end of the lever 604 may be bolted to the different apertures 606 of the support frame 602 using a lanyard pin or lock pin. In another embodiment, the aperture 608 at the free end of the lever 604 may be bolted using at least one of a ring knob pin, a round knob pin, a selector pin, or a T-Knob pin. The height adjustment mechanism 502 may provide for a customized cleaning of the solar panel 104 depending on the accumulation of dirt and debris. Further, the different heights of the cleaning brush 402 may enable different types of cleaning of the solar panel 104. For instance, a lower height of the cleaning brush 402 with reference to the top surface of the solar panel 104 may cause a thorough cleaning of the solar panel eliminating every minute dust particles accumulated on the solar panel 104. Similarly, the higher height of the cleaning brush 402 with reference to the top surface of the solar panel 104 may cause cleaning of large particles such as dried leaves accumulated on the solar panel 104.
Now, referring to FIG.5, the mainframe 302 may further comprise a centrals support structure comprising a parallel support members 308 configured at a center of the elongated support members 304. The central support structure further comprises one or more wheels 310 connected between the parallel support members 308. Further, the one or more wheels 310 are connected to a bottom ends of the parallel support member underneath the mainframe 302 to provide structural support to the cleaning device 102 as well as support during the linear movement of the cleaning device 102 over the solar panel 104. In an embodiment, the wheels 310 may be free-moving wheels. In a preferred embodiment, the wheels 310 may be free-moving rubber wheels.
Further, the top of the solar panel cleaning device 102 may be enclosed with a removable cover 504 as shown in FIG. 5. The removable cover 504 may be configured to protect the components of the solar panel cleaning device 102 from any external dirt and physical damages. In an embodiment, the removable cover 504 may be attached to the solar panel cleaning device 102 through nuts and bolts. In another embodiment, the removable cover 504 may be attached to the solar panel cleaning device 102 with the help of clamps.
In an embodiment, the removable cover 504 of the solar panel cleaning device 102 may be made from any suitable metal material. In a preferred embodiment, the removable cover 504 of the solar panel cleaning device 102 may be made from aluminum material. The aluminum material may be configured to make the removable cover 504 because of its lightweight properties. The light weight of the removable cover 504 may reduce the overall weight of the solar panel cleaning device 102, which may prevent damage to the solar panels 104 by the solar panel cleaning device 102.
Further, referring to FIG. 5, a battery 506 may be configured on the top of the mounting assembly 306a. The battery 506 is configured to provide power to the cleaning device 102 to facilitate its movement over the top surface of the solar panel 104.
In an embodiment, the battery 506 may include but not be limited to a Lead-acid battery, Nickel-metal hydride (NiMH) battery, or Alkaline battery. In a preferred embodiment, the battery 506 used may be Lithium Ion battery 506. The Lithium-ion battery 506 may be configured for its lightweight properties. Further, the Lithium-ion battery 506 may showcase a high voltage, a high energy density, and a low self-discharge rate. In another embodiment, the solar panel cleaning device 102 may be configured with solar panels to power the solar panel cleaning device 102 and charge the battery 506. In an embodiment, the battery 506 may be configured to deliver at least a 3-hour battery backup to the solar panel cleaning device 102.
Further the length of the solar panel cleaning device 102 may be adjusted according to the length of the solar panel 104. In an embodiment, the elongated support member 304 of the mainframe 302 may comprise a plurality of apertures. Further, the mounting assembly may be attached to the mainframe by bolting the mounting members to the apertures of the mainframe.
Further, the solar panel cleaning device 102 may be configured with a control panel 702 configured to control the movement of the solar panel cleaning device 102 over the solar panel 104 as seen in Fig. 7-8. In an embodiment, the control panel 702 may comprise one or more of the buttons, a selection dial, or any other input component configured to control the cleaning device 102. The control panel 702 may be configured to control the speed of the cleaning device 102.
Referring to FIG.9, an actuation assembly 406 may be connected to the mounting assembly 306b. The actuation assembly 406 may be connected to the cleaning brush 402 and the roller belt assembly 404b. Further, the actuation assembly 406 may be configured to synchronously rotate the roller belt assembly 404b and the cleaning brush 402.
Further, the actuation assembly 406 may comprise a gear and motor assembly configured to provide rotary motion and power to the roller belt assembly 404b and the cleaning brush 402. Further, the gear and motor assembly may provide high stability, position accuracy, and speed regulation of the solar panel cleaning device 102 while traversing along the solar panel 104. The gear and motor assembly may further enable to vary of the speed and torque of the solar panel cleaning device 102 over the top surface of the solar panel 104. In an embodiment, a DC motor may be configured in the actuation assembly 406. In another embodiment, the motor may be, but not limited to, an AC motor or a universal motor.
Referring again to FIG. 5 which shows an exploded view of every component configured in the cleaning device 102, the battery 506 may configure one mounting assembly 306a and the actuator assembly 406 may be configured on the other mounting assembly 306b to balance the overall weight distribution of the solar panel cleaning device 102.
Further. in an alternative embodiment, the battery 506 may be connected to the mounting assembly 306b and the actuation assembly 406 may be connected on the mounting member 306a. Further, in another embodiment, a battery 506 may be configured on both the mounting assembly (306a and 306b). Further, the actuation assembly 406 may also be configured on both the mounting assemblies (306a and 306b). Further, in another embodiment. a battery 506 and an actuation assembly 406 may be configured together on either the mounting assembly 306a or the mounting assembly 306b.
FIG.10 shows a cleaning brush 402 of the solar panel cleaning device, as an illustrative configuration of the present disclosure. In reference to FIG.10, the cleaning brush 402may be made from an elongated cylindrical member 1002 comprising a plurality of bristles 1004 on its outer periphery. In an embodiment, the elongated cylindrical member 1002 may be made from high-performance industrial-grade materials. In an embodiment, the elongated cylindrical member 1002 may be made from an aluminum alloy for its lightweight properties. In an embodiment, the bristles 1004 arrangement cleaning brush 402 may be selected from a twisted brush, a spiral brush, a flat broom brush, or a roller sweeping type brush. Further, the cleaning brush 402 may be from a combination of the above-stated brush type.
In an embodiment, the cleaning brush 402 comprises a cylindrical sponge 1002 configured over a shaft 1006. Further, the outer surface of the cylindrical sponge 1002 may include bristles 1004 to clean debris from the solar panel 104. In one embodiment, the bristles 1004 may be provided spirally across a length of the cylindrical sponge 1002.
In a preferred embodiment, the cleaning device 102 is capable of covering a 3000-meter worth of length of a solar panel in a single use. Further, the solar panel cleaning device 102 may be configured to cover a distance of 1200 meters on the top surface of the solar panel 104 within an hour. Further, it is to be taken into consideration that the aforementioned values may be changed as per the requirements of the solar panel cleaning device 102.
Various modifications to the embodiment will be readily apparent to those skilled in the art and the generic principles herein may be applied to other embodiments. However, one of ordinary skill in the art will readily recognize that the present disclosure is not intended to be limited to the embodiments illustrated but is to be accorded the widest scope consistent with the principles and features described herein. The foregoing description shall be interpreted as illustrative and not in any limiting sense. A person of ordinary skill in the art would understand that certain modifications could come within the scope of this disclosure.
The embodiments, examples, and alternatives of the preceding paragraphs or the description and drawings, including any of their various aspects or respective individual features, may be taken independently or in any combination. Features described in connection with one embodiment are applicable to all embodiments unless such features are incompatible.
, Claims:CLAIMS
We claim,
1. A solar panel cleaning device (102), comprising:
a mainframe (302) comprising:
at least one elongated support member (304); and
at least one mounting assembly (306a and 306b) configured at each end of the at least one elongated support member (304);
a cleaning brush (402) connected between the mounting assembly (306a and 306b) configured at each end of the elongated support member (304);
at least one roller belt assembly (404a and 404bactuation) configured on each of the mounting assembly (306a and 306b);
an actuation assembly (406) connected to the cleaning brush (402) and the at least one roller belt assembly (404a and 404b); and
a height adjustment mechanism (502) configured to connect the cleaning brush (402) to the main frame (302).

2. A solar panel cleaning device (102) as claimed in claim 1, wherein
the at least one mounting assembly (306a and 306b) further includes:
one or more mounting members (312a and 312b) connected to the at least one elongated support member (304); and
one or more wheels (314a and 314b) connected to a lower surface of a first mounting member of the one or more mounting members (312a and 312b), wherein the one or more wheels (314a and 314b) are connected parallel to an axis of the main frame (302).

3. A solar panel cleaning device (102) as claimed in claim 2, wherein the one or more wheels (314a and 314b) connected at a lower surface of the elongated support member (304) are configured to secure and hold the solar panel cleaning device (102) over the solar panel (104).

4. The solar panel cleaning device (102) as claimed in claim 1, wherein the height adjustment mechanism (502) enables adjustment of a height of the brush (306) with respect to the solar panel (104).

5. The solar panel cleaning device (102) as claimed in claim 1, wherein the height adjustment mechanism (502) comprises a lever (604) and a support frame (602), wherein the lever (604) and the support frame (602) comprise one or more aperture (606, 608).

6. The solar panel cleaning device (102) as claimed in claim 1, wherein one end of the lever (604) of height adjustment mechanism (502) is pivoted to the support frame (602) and the other end is configured to move free.

7. The solar panel cleaning device (102) as claimed in claim 1, wherein the height of the brush (306) is changed by bolting the apertures (606) at the free end of the lever (604) to the different apertures (608) of the support frame (602) to vary the height of the brush (306).

8. The solar panel cleaning device (102) as claimed in claim 1, wherein the roller belt assembly (404a and 404b) is configured for the linear movement of the solar panel cleaning device (102) over the solar panel (104).

9. The solar panel cleaning device (102) as claimed in claim 1, wherein the actuation assembly (406) includes a gear and a motor assembly, configured to synchronously rotate the roller belt assembly (404a and 404b) and the cleaning brush (306).

10. The solar panel cleaning device (102) as claimed in claim 1, wherein the main frame (102) comprises a plurality of elongated support member (304) configured parallelly to support the mounting members (312a and 312b).

11. The solar panel cleaning device (102) as claimed in claim 1, wherein the length of the solar panel cleaning device (102) is adjustable according to the length of the solar panel (104).