Photovoltaic sweeper

Abstract

A photovoltaic sweeper comprises a supporting beam, a driving wheel set, a driven wheel set and a first driving motor, the driving wheel set and the first driving motor are arranged on a first machine head on the supporting beam, the driven wheel set is arranged on a second machine head on the supporting beam, and the first driving motor is used for driving the driving wheel set to operate. The driving wheel set comprises a driving wheel and a first guide wheel, a first power output shaft of the first driving motor is in driving connection with a first transmission mechanism, the first transmission mechanism is sleeved with a sealing box body, the first transmission mechanism comprises two second power output shafts, the two second power output shafts are arranged in an included angle mode, and the two second power output shafts penetrate out of the sealing box body. And the driving motor is in driving connection with the driving wheel and the first guide wheel so as to transmit driving force of the first driving motor to the driving wheel and the first guide wheel. According to the photovoltaic cleaning machine, the transmission mechanism between the first driving motor and the driving wheel set serves as an independent whole to be arranged in the sealed box body, the sealing performance of the photovoltaic cleaning machine is guaranteed, water and dust are not prone to entering, and long-time stable operation of the photovoltaic cleaning machine is better facilitated.

Description

Technical Field

[0001] This application relates to the field of photovoltaic cleaning technology, and more particularly to a photovoltaic cleaning machine. Background Technology

[0002] Currently, most 1P photovoltaic sweepers on the market are driven by a single motor (planetary motor) through a transmission device. The advantage of this device is its low cost, but the disadvantage is that there are too many gear transmission units. On the one hand, this makes the overall structure of the photovoltaic sweeper heavier, requiring more manpower or mechanical assistance during installation, and the excessive number of gear transmission units also wastes assembly time. On the other hand, the stopping of the photovoltaic sweeper is a hard limit, which is subject to impact. Long-term use can easily damage the transmission unit. Moreover, the entire transmission structure is placed in a gearbox. If a leak occurs in one place, the entire mechanism is exposed to the risk of dust and water ingress, resulting in high manual maintenance costs.

[0003] Therefore, it is necessary to propose structural improvements to the photovoltaic cleaning machine in order to enhance its performance. Utility Model Content

[0004] The purpose of this application is to provide a photovoltaic cleaning machine with better sealing performance, which is less prone to water and dust ingress, can operate stably for a long time, and has lower manual maintenance costs.

[0005] The technical solution provided by this utility model is as follows:

[0006] A photovoltaic cleaning machine, comprising:

[0007] A support beam, with a first machine head and a second machine head at both ends along the axial length of the support beam;

[0008] The drive wheel assembly is located at the first machine head;

[0009] A driven wheel assembly is located at the second machine head, and the driven wheel assembly is connected to the driving wheel assembly in a driving connection.

[0010] A first drive motor is located at the first machine head and is used to drive the drive wheel assembly to move the photovoltaic sweeper.

[0011] The drive wheel assembly includes a drive wheel and a first guide wheel. The first power output shaft of the first drive motor is driven and connected to a first transmission mechanism. The first transmission mechanism is fitted with a sealed housing and includes two second power output shafts arranged at an included angle. Both second power output shafts are adapted to pass through the sealed housing and drive and connect the drive wheel and the first guide wheel respectively, so as to transmit the driving force of the first drive motor to the drive wheel and the first guide wheel.

[0012] In some embodiments, the first transmission mechanism includes a plurality of gears, and the driving force of the first drive motor is output to two second power output shafts through the meshing transmission between the plurality of gears.

[0013] In some embodiments, the plurality of gears mesh with different numbers of teeth to transmit power to the two second power output shafts at different transmission ratios.

[0014] In some embodiments, the driven wheel assembly includes a driven wheel and a second guide wheel;

[0015] The driven wheel and the driving wheel are connected by a drive, and the driven wheel and the driving wheel are adapted to make rolling contact with the photovoltaic surface of the photovoltaic module to be cleaned; the first guide wheel and the second guide wheel are adapted to make rolling contact with the side wall surface of the photovoltaic module to be cleaned, so as to guide the photovoltaic cleaning machine to move along the extension direction of the photovoltaic module to be cleaned.

[0016] In some embodiments, the second machine head is provided with a second transmission mechanism, the second transmission mechanism is fitted with a sealed housing, and the second transmission mechanism includes two first rotating shafts arranged at an included angle, both of which are adapted to pass through the sealed housing and respectively drive the driven wheel and the second guide wheel so that the driven wheel and the second guide wheel can rotate relative to the second machine head.

[0017] In some embodiments, there are two sets of drive wheels and two first drive motors, each driving one set of drive wheels. The two sets of drive wheels and the two first drive motors are arranged along the width direction of the photovoltaic sweeper.

[0018] There are two sets of driven wheel groups, which are arranged opposite to the driving wheel groups in pairs, and the driven wheels in the two sets of driven wheel groups are respectively connected to the driving wheels in the opposite driving wheel groups via a transmission rod.

[0019] In some embodiments, the first head and / or the second head are provided with anti-detachment hooks to prevent the photovoltaic cleaning machine from falling off the photovoltaic module to be cleaned.

[0020] In some embodiments, the photovoltaic cleaning machine further includes:

[0021] The brush is located below the support beam;

[0022] The second drive motor is installed on the side of the second head away from the first head, and the second head has a through hole for the power output shaft of the second drive motor to pass through and drive the brush; the end of the brush away from the second drive motor is rotatably connected to the first head via the second rotating shaft.

[0023] In some embodiments, the photovoltaic cleaning machine further includes:

[0024] The control box is used to control the operation of the first drive motor;

[0025] and / or

[0026] A photovoltaic panel, located on top of the supporting beam, is used to supply power to the photovoltaic cleaning machine.

[0027] In some embodiments, the photovoltaic cleaning machine further includes:

[0028] A cover is disposed above the support beam and at least covers the first machine head and the second machine head.

[0029] The technical advantages of this application are as follows:

[0030] 1. In this application, when the first drive motor drives the drive wheel assembly, it needs to be able to simultaneously drive the drive wheel and the first guide wheel to rotate. Therefore, the first power output shaft of the first drive motor is equipped with a first transmission mechanism to transmit the driving force of the first drive motor to the drive wheel and the first guide wheel. The first transmission mechanism is set as an independent unit in the sealed box. Since no other structures are involved in the sealed box, disassembly and assembly are minimal, ensuring its sealing performance and preventing water and dust from entering. This reduces problems such as lubrication failure, corrosion, and wear caused by dust, water, and other impurities entering the first transmission mechanism, extending its service life. This is more conducive to the long-term stable operation of the photovoltaic cleaning machine and also reduces manual maintenance costs.

[0031] 2. In this application, the driven wheel rotates under the drive of the driving wheel, and together with the driving wheel, drives the photovoltaic sweeper to move. During the movement, the second guide wheel also rotates. This application achieves the rotation of the driven wheel and the second guide wheel relative to the second head by setting a second transmission mechanism on the second head. At the same time, this second transmission mechanism is set as an independent whole in the sealed box. Since no other structures are involved in the sealed box, disassembly and assembly are minimal, ensuring its airtightness and making it difficult for water or dust to enter. Moreover, since the first transmission mechanism and the second transmission mechanism are independent of each other and do not affect each other, if a leak occurs in one place, the entire mechanism will not face the risk of dust or water entering.

[0032] 3. In this application, there are two sets of active wheel sets, each driven by two first drive motors. When one set of active wheel sets gets stuck or suspended due to climbing a slope, the other set of active wheel sets can still provide power to the photovoltaic sweeper, thereby increasing the photovoltaic sweeper's ability to climb slopes and overcome obstacles.

[0033] 4. In this application, the brush is driven solely by a second drive motor. By adjusting the speed of the second drive motor, different cleaning effects can be achieved, resulting in higher cleaning efficiency. Compared to existing single-motor control, this application uses three small motors (two first drive motors and one second drive motor) to drive the brush separately. The cost increase is minimal, but it enables diversified control and improves performance. Moreover, since all three small motors are directly driven, the transmission efficiency is higher, saving more energy and extending the battery life of the photovoltaic sweeper. Attached Figure Description

[0034] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0035] Figure 1 This is a three-dimensional structural schematic diagram of the photovoltaic cleaning machine provided in one embodiment of the present application;

[0036] Figure 2 This is a three-dimensional structural diagram of the photovoltaic cleaning machine after removing the cover in one embodiment of this application;

[0037] Figure 3 yes Figure 2 A magnified view of a portion of point A shown;

[0038] Figure 4 This is a partially exploded schematic diagram of the first engine head and drive wheel assembly provided in one embodiment of this application;

[0039] Figure 5 This is a partial exploded view of the first engine head and driven wheel assembly provided in one embodiment of this application.

[0040] Explanation of icon numbers:

[0041] 100. Photovoltaic sweeper; 110. Support beam; 111. First head; 1111. Second rotating shaft; 112. Second head; 113. Connecting part; 114. Anti-disengagement hook; 115. Cover; 120. Drive wheel assembly; 121. Drive wheel; 122. First guide wheel; 130. Driven wheel assembly; 131. Driven wheel; 132. Second guide wheel; 140. First drive motor; 141. First power output shaft; 151. Sealed housing; 152. First transmission mechanism; 1521. Second power output shaft; 153. Second transmission mechanism; 1531. First rotating shaft; 160. Transmission rod; 171. Brush; 172. Second drive motor; 1721. Third power output shaft; 180. Control box; 190. Photovoltaic panel;

[0042] 200. Photovoltaic modules. Detailed Implementation

[0043] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0044] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the specific implementation methods of this application will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this application. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0045] To keep the drawings concise, each drawing only schematically shows the parts relevant to this application, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0046] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0047] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0048] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of the various components of this application are relative rather than absolute. These descriptions are appropriate when these components are in the positions shown in the drawings. If the description of the positions of these components changes, these directional indications also change accordingly.

[0049] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0050] According to a specific embodiment provided in this application, see [link to specific embodiment]. Figure 1 and Figure 2 A photovoltaic cleaning machine 100 includes a support beam 110 and a drive wheel assembly 120, a driven wheel assembly 130, and a first drive motor 140 mounted on the support beam 110. Specifically, the support beam 110 has a first head 111 and a second head 112 at its two ends along its length axis. The drive wheel assembly 120 and the first drive motor 140 are both located at the first head 111, and the first drive motor 140 drives the drive wheel assembly 120. The driven wheel assembly 130 is located at the second head 112 and is connected to the drive wheel assembly 120 for transmission. When the first drive motor 140 drives the drive wheel assembly 120, the driven wheel assembly 130 also moves under the drive of the drive wheel assembly 120, thereby driving the two ends of the support beam 110 to move synchronously, realizing the movement of the entire photovoltaic cleaning machine 100 so that the photovoltaic cleaning machine 100 can clean the photovoltaic modules 200.

[0051] Among them, see Figure 3 The support beam 110 preferably adopts a C-shaped beam, which has high overall strength and is lightweight. It can achieve lightweight production while meeting the strength requirements of the photovoltaic sweeper 100, reducing the overall weight of the photovoltaic sweeper 100, making it easier to install on the photovoltaic bracket that needs to be cleaned, and also reducing the strength requirements of the photovoltaic bracket, making it highly practical.

[0052] At this time, see Figures 2 to 5There are two support beams 110, which are arranged in parallel and spaced apart. The first machine head 111 is provided with a connecting part 113 that can be adapted to the cross-sectional profile of the two support beams 110, so that the first machine head 111 can connect the two support beams 110 and fix them to one end of the two support beams 110 in the axial direction. Correspondingly, the second machine head 112 is provided with a connecting part 113 that can be adapted to the cross-sectional profile of the two support beams 110, so that the second machine head 112 can connect the two support beams 110 and fix them to the other end of the two support beams 110 in the longitudinal direction.

[0053] For example, see Figure 2 and Figure 4 The drive wheel assembly 120 specifically includes a drive wheel 121 and a first guide wheel 122. The axis of the drive wheel 121 is parallel to the longitudinal axis of the support beam 110, suitable for rolling contact with the photovoltaic surface of the photovoltaic module 200; the axis of the first guide wheel 122 is approximately perpendicular to the axis of the drive wheel 121, suitable for rolling contact with the side wall surface of the photovoltaic module 200. See also... Figure 2 and Figure 5 The driven wheel assembly 130 includes a driven wheel 131 and a second guide wheel 132. The axis of the driven wheel 131 is parallel to the axis of the support beam 110 along its length and is connected to the drive wheel 121. When the drive wheel 121 rotates under the drive of the first drive motor 140, the driven wheel 131 rotates synchronously with the drive wheel 121. The two cooperate with each other to realize the movement of the photovoltaic sweeper 100 on the photovoltaic module 200. The axis of the second guide wheel 132 is approximately perpendicular to the axis of the driven wheel 131 and is suitable for rolling contact with the side wall of the photovoltaic module 200. It can cooperate with the first guide wheel 122 during the movement of the photovoltaic sweeper 100, thereby guiding the photovoltaic sweeper 100 to move along the extension direction of the side wall of the photovoltaic module 200.

[0054] Preferably, see Figure 4 The first power output shaft 141 of the first drive motor 140 is driven and connected to the first transmission mechanism 152. The first transmission mechanism 152 is fitted with a sealed housing 151, and the first transmission mechanism 152 includes two second power output shafts 1521 arranged at an included angle. Both second power output shafts 1521 are adapted to pass through the sealed housing 151 and drive and connect the drive wheel 121 and the first guide wheel 122 respectively, so as to transmit the driving force of the first drive motor 140 to the drive wheel 121 and the first guide wheel 122.

[0055] In this embodiment, a first transmission mechanism is provided so that the first drive motor 140 can simultaneously drive the drive wheel 121 and the first guide wheel 122 to rotate. Furthermore, the first transmission mechanism is housed as an independent unit within the sealed housing 151. Because the sealed housing 151 does not involve other structures, disassembly and assembly are minimal, ensuring its airtightness and preventing water and dust ingress. This reduces problems such as lubrication failure, corrosion, and wear caused by dust, water, and other impurities entering the first transmission mechanism, extending its service life. This is more conducive to the long-term stable operation of the photovoltaic cleaning machine 100 and also lowers manual maintenance costs.

[0056] Furthermore, the first transmission mechanism includes multiple gears, which mesh to output the driving force of the first drive motor 140 to two second power output shafts 1521, thereby achieving linkage between the two second power output shafts 1521. At this time, the first transmission mechanism 152 and the sealed housing 151 can together form a double-output shaft linkage gearbox.

[0057] This embodiment employs multiple gears for transmission. Compared to other transmission methods, such as linkage transmission, the first transmission mechanism 152 occupies less space, has a more compact structure, and is easier to modularly design for both the first transmission mechanism 152 and the sealed housing 151. Furthermore, the compact design allows for better adaptation to different installation environments, facilitating the movement and installation of the photovoltaic cleaning machine 100. The multiple gears mesh with different numbers of teeth, transmitting power to the two second power output shafts 1521 at different transmission ratios.

[0058] In contrast, see Figure 5 The second machine head 112 is provided with a second transmission mechanism 153. The second transmission mechanism 153 is covered by a sealed housing 151. The second transmission mechanism 153 includes two first rotating shafts 1531 arranged at an included angle. Both first rotating shafts 1531 are adapted to pass through the sealed housing 151 and respectively drive the driven wheel 131 and the second guide wheel 132 so that the driven wheel 131 and the second guide wheel 132 can rotate relative to the second machine head 112.

[0059] In actual use, the first drive motor 140 drives the drive wheel 121 and the first guide wheel 122 to rotate. Driven by the drive wheel 121, the driven wheel 131 rotates relative to the second head 112 and, together with the drive wheel 121, drives the photovoltaic sweeper 100 to move. The second guide wheel 132 also rotates relative to the second head 112 during the movement of the photovoltaic sweeper 100. This embodiment integrates the originally dispersed structures that enable the driven wheel 131 to rotate relative to the second head 112 and the structures that enable the second guide wheel 132 to rotate relative to the second head 112 into a single, more compact structure, which is advantageous for integration into the sealed housing 151. Preferably, the second transmission mechanism includes multiple gears, forming a dual-output shaft non-linkage gearbox together with the sealed housing 151.

[0060] Because the sealed housing 151 does not involve other structures, there is less disassembly and assembly, ensuring its airtightness and making it less prone to water or dust ingress. Moreover, considering that the first transmission mechanism 152 and the second transmission mechanism 153 are each sealed as independent units and do not affect each other, if a leak occurs in one part, the entire mechanism will not face the risk of dust or water ingress. The structural design is more reasonable and practical.

[0061] Preferably, see Figure 2 , Figure 4 and Figure 5 There are two sets of drive wheel assemblies 120 and two first drive motors 140, which can drive the two sets of drive wheel assemblies 120 respectively. The two sets of drive wheel assemblies 120 and the two first drive motors 140 are arranged along the width direction of the photovoltaic sweeper 100. In this way, when one set of drive wheel assemblies 120 gets stuck or suspended due to climbing a slope, the other set of drive wheel assemblies 120 can still provide power to the photovoltaic sweeper 100, increasing the climbing and obstacle-crossing ability of the photovoltaic sweeper 100. In this embodiment, the two first drive motors 140 are preferably brushless motors. Conversely, there are two sets of driven wheel assemblies 130, which are arranged opposite to the drive wheel assemblies 120. The driven wheels 131 in the two sets of driven wheel assemblies 130 are respectively connected to the drive wheels 121 in the opposite set of drive wheel assemblies 120 via a transmission rod 160.

[0062] In this embodiment, by setting the transmission rod 160, the synchronization of the driving wheel 121 and the driven wheel 131 can be ensured, and the synchronous movement of both ends of the support beam 110 can be achieved, reducing the possibility of the photovoltaic sweeper 100 getting stuck or even jammed due to the asynchronous movement of the two sides of the support beam 110.

[0063] In one specific embodiment, see Figure 4 and Figure 5The first head 111 and / or the second head 112 are also equipped with anti-detachment hooks 114, which are used to prevent the photovoltaic sweeper 100 from falling off the photovoltaic module 200 to be cleaned. This helps the photovoltaic sweeper 100 to move stably on the photovoltaic module 200, ensuring that the photovoltaic sweeper 100 will not fall off accidentally due to changes in the angle of the photovoltaic module 200 or mechanical failure during operation, thereby reducing the risk of equipment damage and safety hazards.

[0064] Preferably, both the first head 111 and the second head 112 are equipped with anti-detachment hooks 114. Compared with the anti-detachment hooks 114 being provided only on the first head 111 or the second head 112, the risk of the photovoltaic sweeper 100 falling off accidentally can be greatly reduced, and the safety of equipment operation can be improved.

[0065] In one example embodiment, see Figures 1 to 3 The photovoltaic cleaning machine 100 also includes a brush 171 located below the support beam 110, used to clean the photovoltaic modules 200 during the movement of the photovoltaic cleaning machine 100. The brush 171 can be a translational brush, meaning that as the photovoltaic cleaning machine 100 moves, the brush 171 moves along with it, cleaning the photovoltaic modules 200 through the translational motion of the brush 171. Alternatively, the brush 171 can also be a rolling brush, where the brush 171 rotates around its own axis as the photovoltaic cleaning machine 100 moves with it, achieving a better cleaning effect.

[0066] Taking the use of a rolling brush 171 as an example, the photovoltaic cleaning machine 100 also includes a second drive motor 172. This second drive motor 172 is mounted on the first head 111 or the second head 112 and is connected to the brush 171 to drive its rotation. Since the first head 111 is already equipped with the first drive motor 140, in a preferred embodiment, the second drive motor 172 can be mounted on the second head 112 to provide a counterweight, which is more conducive to the smooth and synchronous movement of both ends of the support beam 110 along its axial direction.

[0067] Specifically, see Figure 2 , Figure 4 and Figure 5 The second drive motor 172 is preferably a brushless motor, located on the side of the second head 112 away from the first head 111, and the second head 112 has a through hole for the third power output shaft 1721 of the second drive motor 172 to pass through and drive the brush 171. At this time, the end of the brush 171 away from the second drive motor 172 is rotatably connected to the first head 111 via the second rotating shaft 1111.

[0068] In this embodiment, the brush 171 is driven solely by the second drive motor 172. By adjusting the rotation speed of the second drive motor 172, different cleaning effects can be achieved, resulting in higher cleaning efficiency and greater flexibility. Furthermore, in the prior art, most photovoltaic sweepers 100 employ single-motor control, meaning a single large motor (planetary motor) controls both the movement of the photovoltaic sweeper 100 and the rolling of the brush 171. This embodiment, however, uses three small motors (two first drive motors 140 and one second drive motor 172, all brushless motors) to drive both the movement of the photovoltaic sweeper 100 and the rolling of the brush 171. This results in only a slight increase in cost but also enables more diverse control and better performance. In addition, because all three small motors are directly driven, the transmission efficiency is higher, saving more energy and extending the battery life of the photovoltaic sweeper 100.

[0069] Specifically, see Figure 1 The photovoltaic sweeper 100 may also include a control box 180, which controls the operation of the first drive motor 140 and the second drive motor 172 to achieve fully automated sweeping. Furthermore, the photovoltaic sweeper 100 may also include a photovoltaic panel 190, which is located on top of the support beam 110 and converts solar energy into electrical energy, which is then output to the control box 180, the first drive motor 140, and the second drive motor 172, further improving the endurance of the photovoltaic sweeper 100.

[0070] Furthermore, the photovoltaic sweeper 100 also includes a cover 115, which is located above the support beam 110 and covers at least the first head 111 and the second head 112. This cover 115 effectively protects the drive wheel assembly 120, driven wheel assembly 130, and related transmission structures on the first head 111 and the second head 112, preventing damage from external factors. Moreover, the cover 115 also isolates dust, water, and other impurities in the air to a certain extent, further reducing the risk of water and dust ingress into the first transmission mechanism 152 and the second transmission mechanism 153, enabling the photovoltaic sweeper 100 to operate stably for extended periods and reducing manual maintenance costs.

[0071] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0072] It should be noted that the above embodiments can be freely combined as needed. The above are merely preferred embodiments of this application. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A photovoltaic cleaning machine, characterized in that, include: A support beam, with a first machine head and a second machine head at both ends along the axial length of the support beam; The drive wheel assembly is located at the first machine head; A driven wheel assembly is located at the second machine head, and the driven wheel assembly is connected to the driving wheel assembly in a driving connection. A first drive motor is located at the first machine head and is used to drive the drive wheel assembly to move the photovoltaic sweeper. The drive wheel assembly includes a drive wheel and a first guide wheel. The first power output shaft of the first drive motor is driven and connected to a first transmission mechanism. The first transmission mechanism is fitted with a sealed housing and includes two second power output shafts arranged at an included angle. Both second power output shafts are adapted to pass through the sealed housing and drive and connect the drive wheel and the first guide wheel respectively, so as to transmit the driving force of the first drive motor to the drive wheel and the first guide wheel.

2. The photovoltaic cleaning machine according to claim 1, characterized in that, The first transmission mechanism includes multiple gears, and the driving force of the first drive motor is output to the two second power output shafts through the meshing transmission between the multiple gears.

3. The photovoltaic cleaning machine according to claim 2, characterized in that, The multiple gears mesh with different numbers of teeth to transmit power to the two second power output shafts at different transmission ratios.

4. The photovoltaic cleaning machine according to any one of claims 1-3, characterized in that, The driven wheel assembly includes a driven wheel and a second guide wheel; The driven wheel and the driving wheel are connected by a drive, and the driven wheel and the driving wheel are adapted to make rolling contact with the photovoltaic surface of the photovoltaic module to be cleaned; the first guide wheel and the second guide wheel are adapted to make rolling contact with the side wall surface of the photovoltaic module to be cleaned, so as to guide the photovoltaic cleaning machine to move along the extension direction of the photovoltaic module to be cleaned.

5. The photovoltaic cleaning machine according to claim 4, characterized in that, The second machine head is provided with a second transmission mechanism. The second transmission mechanism is fitted with a sealed housing. The second transmission mechanism includes two first rotating shafts arranged at an included angle. Both first rotating shafts are adapted to pass through the sealed housing and respectively drive the driven wheel and the second guide wheel so that the driven wheel and the second guide wheel can rotate relative to the second machine head.

6. The photovoltaic cleaning machine according to claim 4, characterized in that, The number of drive wheel sets is two, and the number of first drive motors is two. The two first drive motors respectively drive the two sets of drive wheel sets. The two sets of drive wheel sets and the two first drive motors are arranged along the width direction of the photovoltaic sweeper; and... There are two sets of driven wheel groups, which are arranged opposite to the driving wheel groups in pairs, and the driven wheels in the two sets of driven wheel groups are respectively connected to the driving wheels in the opposite driving wheel groups via a transmission rod.

7. The photovoltaic cleaning machine according to any one of claims 1-3, characterized in that, The first head and / or the second head are equipped with anti-detachment hooks to prevent the photovoltaic cleaning machine from falling off the photovoltaic module to be cleaned.

8. The photovoltaic cleaning machine according to any one of claims 1-3, characterized in that, Also includes: The brush is located below the support beam; The second drive motor is installed on the side of the second head away from the first head, and the second head has a through hole for the power output shaft of the second drive motor to pass through and drive the brush; the end of the brush away from the second drive motor is rotatably connected to the first head via the second rotating shaft.

9. The photovoltaic cleaning machine according to any one of claims 1-3, characterized in that, Also includes: The control box is used to control the operation of the first drive motor; and / or A photovoltaic panel, located on top of the supporting beam, is used to supply power to the photovoltaic cleaning machine.

10. The photovoltaic cleaning machine according to any one of claims 1-3, characterized in that, Also includes: A cover is disposed above the support beam and at least covers the first machine head and the second machine head.

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