Cleaning vehicle

Abstract

The utility model relates to the technical field of automatic cleaning devices, and discloses a cleaning vehicle which comprises a vehicle body and a cleaning mechanism arranged on the vehicle body, the vehicle body comprises a power device and two water supply tanks, the cleaning mechanism comprises a rotary base, a mechanical arm assembly and a rolling brush assembly, and the rotary base is arranged at the top end of the power device. One end of the mechanical arm assembly is installed on the rotary base, the other end of the mechanical arm assembly is in driving connection with the rolling brush assembly, and the power device is used for providing power for the mechanical arm assembly so that the mechanical arm assembly can drive the rolling brush assembly to adjust the spatial position and the pitching angle. The rolling brush assembly comprises a mounting base, a cleaning rolling brush and a spray pipe, the mounting base is connected to one end of the mechanical arm assembly, the cleaning rolling brush is rotationally mounted on the mounting base with the axis of the cleaning rolling brush as a rotating shaft, the spray pipe is arranged on the mounting base, a plurality of nozzles are arranged on the spray pipe at intervals, and the spray pipe communicates with a water supply tank through a first pipeline. The cleaning effect is good, labor is saved, and the stability of the whole vehicle is good.

Description

Technical Field

[0001] This utility model relates to the field of automatic cleaning device technology, and in particular to a cleaning vehicle. Background Technology

[0002] Photovoltaic power generation converts light energy into electrical energy through solar panels. Dust and dirt easily accumulate on the surface of these panels, affecting power generation efficiency. Studies show that dust can reduce power generation efficiency by 15%-25%, making regular cleaning crucial. Traditional cleaning methods rely mainly on manual labor or fixed cleaning equipment, resulting in low efficiency, high costs, and uneven coverage, especially in large-scale photovoltaic power plants where they are insufficient. To improve cleaning efficiency, photovoltaic cleaning vehicles have emerged. These automated devices can efficiently and evenly clean photovoltaic panels, adapting to photovoltaic power plants of different terrains and sizes. Existing cleaning vehicles typically consist of a vehicle body with a lifting arm and roller brushes attached. Cleaning is achieved by the rolling of the roller brushes, but this method alone is insufficient for removing stubborn dust, requiring supplementary external water guns. This is cumbersome, has limited cleaning effectiveness, and if the onboard water tank has a large capacity, the decreasing water level can shift the vehicle's center of gravity, making it unstable on bumpy or rough roads. Utility Model Content

[0003] Based on the above, the purpose of this utility model is to provide a cleaning vehicle that has a better cleaning effect, saves labor, and has better overall stability.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A cleaning vehicle includes a vehicle body and a cleaning mechanism disposed on the vehicle body;

[0006] The vehicle body includes a power unit and two water tanks symmetrically distributed on both sides of the power unit. The two water tanks are connected and are used to hold cleaning fluid.

[0007] The cleaning mechanism includes a rotating base, a robotic arm assembly, and a roller brush assembly. The rotating base is located at the top of the power unit, and the rotation axis of the rotating base is aligned with the height direction of the vehicle body. One end of the robotic arm assembly is mounted on the rotating base, and the other end is driven and connected to the roller brush assembly. The robotic arm assembly is connected to the power unit, which provides power to the robotic arm assembly so that the robotic arm assembly can drive the roller brush assembly to adjust its spatial position and pitch angle.

[0008] The roller brush assembly includes a mounting base, a cleaning roller brush, and a spray pipe. The mounting base is connected to one end of the robotic arm assembly. The cleaning roller brush is rotatably mounted on the mounting base about its own axis. The spray pipe is disposed on the mounting base and has multiple nozzles spaced apart on it. The spray pipe is connected to a water supply tank through a first pipe. The power unit is also used to transport the cleaning fluid in the water supply tank to the spray pipe and then spray it out through the nozzles.

[0009] As a preferred embodiment of a cleaning vehicle, the spray nozzle is provided with two nozzles, which are respectively distributed on both sides of the cleaning roller brush, and the length direction of the spray nozzle is consistent with the axis of the cleaning roller brush.

[0010] As a preferred embodiment of a cleaning vehicle, the central axis of the nozzle outlet passes through the cleaning roller brush.

[0011] As a preferred embodiment of a cleaning vehicle, the robotic arm assembly includes a first arm and a second arm. One end of the first arm is rotatably mounted on the rotary base about a first rotation axis. One end of the second arm is rotatably connected to the other end of the first arm about a second rotation axis. The mounting base is rotatably connected to the other end of the second arm about a third rotation axis. The first rotation axis, the second rotation axis, and the third rotation axis are parallel and all perpendicular to the rotation axis.

[0012] As a preferred embodiment of a cleaning vehicle, the mounting base has a wall cleaning work position, a photovoltaic cleaning work position, and a stop position relative to the second arm. When the mounting base is in the wall cleaning work position, it is perpendicular to the second arm. When the mounting base is in the photovoltaic cleaning work position, it forms a first preset angle with the second arm, and the cleaning roller brush faces downward. When the mounting base is in the stop position, it forms a second preset angle with the second arm, and the cleaning roller brush faces upward.

[0013] As a preferred embodiment of the cleaning vehicle, it also includes a support rail, which is disposed on the top of the vehicle body, and the second arm can rest on the support rail.

[0014] As a preferred embodiment of a cleaning vehicle, the robotic arm assembly further includes a first drive rod, a second drive rod, and a third drive rod, which are respectively connected to the power unit. The power unit is used to drive the first drive rod, the second drive rod, and the third drive rod to extend and retract.

[0015] One end of the first drive rod is rotatably connected to the rotary base, and the other end is rotatably connected to the first arm;

[0016] One end of the second drive rod is rotatably connected to the first arm, and the other end is rotatably connected to the second arm;

[0017] One end of the third drive rod is rotatably connected to the second arm, and the other end is driven to the mounting base via a linkage assembly, so as to drive the mounting base to rotate relative to the second arm.

[0018] As a preferred embodiment of a cleaning vehicle, the vehicle body also includes two hydraulic oil tanks symmetrically distributed on both sides of the power module. The two hydraulic oil tanks are connected. The first drive rod, the second drive rod, and the third drive rod are all hydraulic rods. The power module is connected to the hydraulic oil tanks and each of the hydraulic rods to allow hydraulic oil in the hydraulic oil tanks to circulate between the hydraulic oil tanks and each of the hydraulic rods.

[0019] As a preferred embodiment of a cleaning vehicle, the power module includes a power source, multiple oil pumps, a transfer case, and a high-pressure plunger pump. The power source, the transfer case, and the high-pressure plunger pump are arranged along the length of the vehicle body. The multiple oil pumps and the high-pressure plunger pump are all connected to the output end of the transfer case. The input end of the transfer case is connected to the power source. The high-pressure plunger pump is connected to the water supply tank and the spray pipe through pipelines. The multiple oil pumps are connected to the hydraulic oil tank and are respectively connected to the multiple hydraulic rods one by one.

[0020] As a preferred embodiment of a cleaning vehicle, the vehicle body is equipped with a tracked chassis.

[0021] The beneficial effects of this utility model are as follows:

[0022] This utility model provides a cleaning vehicle. By rationally distributing the power unit and water supply tank, the overall structure of the cleaning vehicle is highly stable, making it less prone to tipping over. Especially for cleaning photovoltaic panels in uneven areas, this cleaning vehicle can maintain a relatively stable state even during the cleaning operation, improving its environmental adaptability. By setting up spray pipes and nozzles, cleaning fluid can be applied while the cleaning roller brush is sweeping, improving the cleaning effect and efficiency. Furthermore, by setting up a power unit, rotating base, and robotic arm assembly, the roller brush assembly can be adjusted to align with the surface to be cleaned as needed, ensuring sufficient cleaning surface area and cleaning effect. It is applicable to various cleaning scenarios, such as cleaning photovoltaic panels or walls, and has excellent flexibility of use. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the cleaning vehicle from one perspective, provided by an embodiment of the present invention;

[0025] Figure 2 This is a structural schematic diagram of the cleaning vehicle from another perspective, provided by an embodiment of the present invention;

[0026] Figure 3 This is a partial structural schematic diagram of the power device provided in an embodiment of the present utility model;

[0027] Figure 4 This is a power unit oil circuit circulation diagram provided in an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the cleaning fluid flow principle provided in an embodiment of this utility model.

[0029] In the picture:

[0030] 1. Vehicle body; 11. Power unit; 111. Power source; 112. Oil pump; 113. Transfer case; 114. High-pressure plunger pump; 115. Safety pressure regulating valve; 116. Pressure gauge; 117. Filter; 118. Unloading valve; 12. Water supply tank; 13. Hydraulic oil tank; 2. Cleaning mechanism; 21. Rotary base; 22. Robotic arm assembly; 221. First arm; 222. Second arm; 223. First drive rod; 224. Second drive rod; 225. Third drive rod; 226. Linkage assembly; 23. Brush assembly; 231. Mounting base; 232. Cleaning brush; 233. Nozzle; 3. Tracked chassis. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0032] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used solely for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Furthermore, the terms "first" and "second" are merely used for descriptive distinction and have no special meaning.

[0035] This embodiment provides a cleaning vehicle, which is used for cleaning photovoltaic panels or walls, and is not limited to the above application scenarios.

[0036] Specifically, the cleaning vehicle includes a vehicle body 1 and a cleaning mechanism 2 mounted on the vehicle body 1. The bottom of the vehicle body 1 is equipped with a tracked chassis 3 to facilitate travel on flat roads or rugged mountain roads. That is, the cleaning vehicle can be moved within a certain range by manipulation, improving its practicality. The cleaning mechanism 2 is used to clean the surface to be cleaned. The tracked chassis 3 is a relatively mature existing technology, so it will not be described in detail here.

[0037] More specifically, the vehicle body 1 includes a power unit 11 and two water tanks 12 symmetrically distributed on both sides of the power unit 11. The two water tanks 12 are connected, for example, through a water pipe, and are used to hold cleaning fluid. The cleaning mechanism 2 includes a rotating base 21, a robotic arm assembly 22, and a roller brush assembly 23. The rotating base 21 is located at the top of the power unit 11 to ensure the balance of the vehicle body 1. The rotation axis of the rotating base 21 is aligned with the height direction of the vehicle body 1. The rotating base 21 is specifically a rotary drive, such as a worm gear rotary drive. One end of the robotic arm assembly 22 is mounted on the rotating base 21, and the other end is driven and connected to the roller brush assembly 23. The robotic arm assembly 22 is connected to the power unit 11, and the power unit 11 provides power to the robotic arm assembly 22 so that the robotic arm assembly 22 drives the roller brush assembly 23 to adjust its spatial position and pitch angle. That is, the robotic arm assembly 22 can rotate 360° on the horizontal plane, thereby realizing the angle adjustment of the roller brush assembly 23 on the horizontal plane, which is beneficial to improving the ability of the cleaning vehicle to adapt to the environment; and the robotic arm assembly 22 drives the roller brush assembly 23 to adjust the spatial position and pitch angle, so that the roller brush assembly 23 can be aligned with the surface to be cleaned at different heights and inclinations.

[0038] In this embodiment, the roller brush assembly 23 includes a mounting base 231, a cleaning roller brush 232, and a spray pipe 233. The mounting base 231 is connected to one end of the robotic arm assembly 22. The cleaning roller brush 232 is rotatably mounted on the mounting base 231 about its own axis. The spray pipe 233 is mounted on the mounting base 231 and has multiple nozzles spaced apart. The spray pipe 233 is connected to a water supply tank 12 through a first pipe. The power unit 11 is also used to transport the cleaning fluid in the water supply tank 12 to the spray pipe 233 and then spray it out through the nozzles. It should be noted that when spraying the cleaning fluid, the liquid levels in the two connected water supply tanks 12 remain basically level. After the cleaning vehicle reaches the designated position, the robotic arm assembly 22 adjusts the roller brush assembly 23 to align with the surface to be cleaned, and then the cleaning roller brush 232 rotates to clean the surface. At the same time, cleaning fluid is sprayed onto the surface to be cleaned as needed.

[0039] The cleaning vehicle provided in this embodiment, through the reasonable distribution of the power unit 11 and water supply tank 12, achieves a high degree of overall structural stability, making it less prone to tipping over. Especially for cleaning photovoltaic panels in rugged areas, this cleaning vehicle can maintain a relatively stable state even during the cleaning operation, improving its environmental adaptability. By setting up spray pipes 233 and nozzles, cleaning fluid can be applied while the cleaning roller brush 232 is sweeping, improving the cleaning effect and efficiency. Furthermore, by setting up the power unit 11, rotating base 21, and robotic arm assembly 22, the roller brush assembly 23 can be adjusted to align with the surface to be cleaned as needed, ensuring sufficient cleaning surface area and cleaning effect. It is also suitable for various cleaning scenarios, such as cleaning photovoltaic panels or walls, offering excellent flexibility in use.

[0040] Preferably, two spray pipes 233 are provided, which are respectively distributed on both sides of the cleaning roller brush 232, and the length direction of the spray pipes 233 is consistent with the axis of the cleaning roller brush 232. Each spray pipe 233 has multiple nozzles spaced apart along its length direction, that is, the cleaning liquid sprayed along the length direction of the cleaning roller brush 232 is more uniform, resulting in a better overall cleaning effect on the surface to be cleaned. Of course, in other embodiments, the number of spray pipes 233 can also be other, such as three or four, depending on the actual needs.

[0041] More preferably, the central axis of the nozzle outlet passes through the cleaning roller brush 232, that is, at least part of the cleaning liquid sprayed through the nozzle can be sprayed onto the cleaning roller brush 232 to wet the cleaning roller brush 232 and improve the cleaning effect.

[0042] Furthermore, the robotic arm assembly 22 includes a first arm 221 and a second arm 222. One end of the first arm 221 is rotatably mounted on the rotary base 21 about a first rotation axis, and one end of the second arm 222 is rotatably connected to the other end of the first arm 221 about a second rotation axis. The mounting base 231 is rotatably connected to the other end of the second arm 222 about a third rotation axis. The first, second, and third rotation axes are parallel and all perpendicular to the rotation axis. The connection between the first arm 221 and the second arm 222 allows for better spatial mobility and a wider range of movement. The rotational setting of the mounting base 231 relative to the second arm 222 facilitates fine adjustment of the pitch angle of the cleaning roller brush 232, thus adapting it to different surfaces to be cleaned, such as inclined photovoltaic panels or vertical walls.

[0043] After the cleaning vehicle reaches its destination, the first arm 221 and the second arm 222 are adjusted in conjunction, causing the roller brush assembly 23 to adjust its height and distance to be close to the surface to be cleaned. The angle of the mounting base 231 is also adjusted, positioning the cleaning roller brush 232 in a working position. For example, the mounting base 231 has a wall cleaning working position, a photovoltaic cleaning working position, and a stop position relative to the second arm 222. When the mounting base 231 is in the wall cleaning working position, it is perpendicular to the second arm 222. When the mounting base 231 is in the photovoltaic cleaning working position, it forms a first preset angle with the second arm 222, and the cleaning roller brush faces downwards. When the mounting base 231 is in the stop position, it forms a second preset angle with the second arm 222, and the cleaning roller brush faces upwards. The first preset angle is determined based on the actual application scenario, such as 45°, and is not limited here. The second preset angle is set according to the actual situation, such as 30°, and is not limited here.

[0044] Preferably, the cleaning vehicle also includes a support railing, which is located on the top of the vehicle body 1, and the second arm 222 can rest on the support railing. When the cleaning vehicle is not in operation, the angles of the first arm 221 and the second arm 222 are adjusted to facilitate transportation and placement, and to avoid impacting the surrounding environment. At this time, the second arm 222 rests on the support railing, which provides support for the second arm 222, reducing the burden on the second arm 222 caused by the weight of the second arm 222 and the roller brush assembly 23, which helps to improve the service life of the second arm 222 and the stability during transportation.

[0045] Specifically, the robotic arm assembly 22 also includes a first drive rod 223, a second drive rod 224, and a third drive rod 225, which are respectively connected to the power unit 11. The power unit 11 is used to drive the first drive rod 223, the second drive rod 224, and the third drive rod 225 to extend and retract. One end of the first drive rod 223 is rotatably connected to the rotary base 21, and the other end is rotatably connected to the first arm 221. One end of the second drive rod 224 is rotatably connected to the first arm 221, and the other end is rotatably connected to the second arm 222. One end of the third drive rod 225 is rotatably connected to the second arm 222, and the other end is driven to connect to the mounting base 231 through the linkage assembly 226, so as to drive the mounting base 231 to rotate relative to the second arm 222. The extension and retraction of the first drive rod 223 causes the first arm 221 to rotate relative to the rotating base 21. The extension and retraction of the second drive rod 224 causes the second arm 222 to rotate relative to the first arm 221. The extension and retraction of the third drive rod 225 causes the roller brush assembly 23 to rotate relative to the second arm 222. That is, the spatial position of the roller brush assembly 23 can be adjusted by the linkage of the first drive rod 223, the second drive rod 224 and the third drive rod 225. The structure is simple and easy to operate. Moreover, the first drive rod 223, the second drive rod 224 and the third drive rod 225 simultaneously provide support for the first arm 221, the second arm 222 and the roller brush assembly 23, ensuring the stability of the first arm 221, the second arm 222 and the roller brush assembly 23.

[0046] More specifically, the linkage assembly 226 includes a V-shaped linkage and a straight rod. One end of the V-shaped linkage is hinged to the second arm 222, and the other end is hinged to the third drive rod 225. One end of the straight rod is hinged to the mounting base 231, and the other end is hinged to the third drive rod 225. The V-shaped linkage allows the third drive member to adjust the pitch angle of the roller brush assembly 23 to a large range when it extends or retracts, and the adjustment is relatively stable, so as to adjust the roller brush assembly 23 to different working positions.

[0047] In this embodiment, the vehicle body 1 also includes two hydraulic oil tanks 13 symmetrically distributed on both sides of the power module. The two hydraulic oil tanks 13 are connected. The first drive rod 223, the second drive rod 224, and the third drive rod 225 are all hydraulic rods. The power module is connected to the hydraulic oil tanks 13 and each hydraulic rod to allow the hydraulic oil in the hydraulic oil tanks 13 to circulate between the hydraulic oil tanks 13 and each hydraulic rod. It should be noted that during the operation of the hydraulic oil, the fluid levels in the two connected hydraulic oil tanks 13 remain basically level. By rationally distributing the hydraulic oil tanks 13, the overall stability of the cleaning vehicle is high, and it is not easy for the center of gravity to become unstable and cause a rollover.

[0048] Understandably, the worm gear rotary drive is driven by a hydraulic motor, the cleaning roller brush 232 is also driven by a hydraulic motor, and the power unit 11 also supplies hydraulic oil to the hydraulic motor; the tracked chassis 3 is also hydraulically driven, that is, the power unit 11 also supplies hydraulic oil to the tracked chassis 3.

[0049] More specifically, the power unit 11 includes a base, a housing, and a connected power source 111, multiple oil pumps 112, and a high-pressure plunger pump 114. The housing covers the base to form a receiving space. The power source 111, multiple oil pumps 112, and high-pressure plunger pump 114 are arranged in the receiving space. The rotating base 21 is installed on the top of the housing. The power source 111 provides power to the multiple oil pumps 112 and the high-pressure plunger. The multiple oil pumps 112 are connected to the hydraulic oil tank 13 and are respectively connected to multiple hydraulic rods to pump hydraulic oil. The high-pressure plunger pump 114 is connected to the water supply tank 12 and the nozzle 233 through pipes to pump cleaning fluid to the nozzle 233. Preferably, the power unit 11 further includes a transfer case 113, which is connected to the power source 111. Multiple oil pumps 112 and a high-pressure plunger pump 114 are connected to the power output end of the transfer case 113. For example, one oil pump 112 and a dual oil pump 112 are connected to the transfer case 113, and the high-pressure plunger pump 114 is connected to the transfer case 113 via a universal joint. The power source 111 is an engine, using air cooling. Since air-cooled engines are a relatively mature existing technology, they will not be described in detail here. It should be noted that the engine, transfer case 113, and high-pressure plunger pump 114 are arranged along the length of the vehicle body 1, and the two water supply tanks 12 are arranged along the width of the vehicle body 1 on both sides of the power unit 11, resulting in high space utilization and reasonable gravity distribution, thus improving the stability of the cleaning vehicle.

[0050] like Figure 4 As shown, the following describes the oil circuit circulation of the power unit. The hydraulic oil in the hydraulic oil tank a enters the oil pump b and the dual oil pump f respectively, and then passes through the oil filters c1 and c2 and through the multi-way valves d1 and d2 to the hydraulic motor driving the cleaning roller brush and the oil drive part of the tracked chassis, realizing the rolling operation of the cleaning roller brush and the movement of the cleaning vehicle. Another path output from the dual oil pump f passes through the oil filter c3 and through the multi-way valve d3 to the three hydraulic rods and the hydraulic motor driving the rotating base, so as to realize the operation of the robotic arm assembly and the operation of the rotating base. After each hydraulic oil operation, it flows into the water cooler through the corresponding multi-way valve for cooling, and then flows back to the hydraulic oil tank a, thus circulating.

[0051] In this embodiment, a level sensor is installed on the water supply tank 12 to detect the water level and allow for timely addition of cleaning fluid; a drain valve is also installed at the bottom of the water supply tank 12 for periodic drainage. Preferably, as follows... Figure 5 As shown, a filter 117 is installed on the pipeline connecting the water supply pipe and the high-pressure plunger pump 114 to filter impurities and prevent clogging of the high-pressure plunger pump 114 and the spray pipe 233; a pressure gauge 116, a safety pressure regulating valve 115 and an unloading valve 118 are also installed on the pipeline between the water supply tank 12 and the spray pipe 233 to detect and regulate the pressure, ensure the smooth progress of the cleaning work and ensure the cleaning effect.

[0052] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A cleaning vehicle, characterized in that, Includes the vehicle body and the cleaning mechanism installed on the vehicle body; The vehicle body includes a power unit and two water tanks symmetrically distributed on both sides of the power unit. The two water tanks are connected and are used to hold cleaning fluid. The cleaning mechanism includes a rotating base, a robotic arm assembly, and a roller brush assembly. The rotating base is located at the top of the power unit, and the rotation axis of the rotating base is aligned with the height direction of the vehicle body. One end of the robotic arm assembly is mounted on the rotating base, and the other end is driven and connected to the roller brush assembly. The robotic arm assembly is connected to the power unit, which provides power to the robotic arm assembly so that the robotic arm assembly can drive the roller brush assembly to adjust its spatial position and pitch angle. The roller brush assembly includes a mounting base, a cleaning roller brush, and a spray pipe. The mounting base is connected to one end of the robotic arm assembly. The cleaning roller brush is rotatably mounted on the mounting base about its own axis. The spray pipe is disposed on the mounting base and has multiple nozzles spaced apart on it. The spray pipe is connected to a water supply tank through a first pipe. The power unit is also used to transport the cleaning fluid in the water supply tank to the spray pipe and then spray it out through the nozzles.

2. The cleaning vehicle according to claim 1, characterized in that, The spray nozzle is provided with two nozzles, which are respectively distributed on both sides of the cleaning roller brush, and the length direction of the spray nozzle is consistent with the axis of the cleaning roller brush.

3. The cleaning vehicle according to claim 1, characterized in that, The central axis of the nozzle outlet passes through the cleaning roller brush.

4. The cleaning vehicle according to claim 1, characterized in that, The robotic arm assembly includes a first arm and a second arm. One end of the first arm is rotatably mounted on the rotary base about a first rotation axis. One end of the second arm is rotatably connected to the other end of the first arm about a second rotation axis. The mounting base is rotatably connected to the other end of the second arm about a third rotation axis. The first rotation axis, the second rotation axis, and the third rotation axis are parallel and all perpendicular to the rotation axis.

5. The cleaning vehicle according to claim 4, characterized in that, The mounting base has a wall cleaning work position, a photovoltaic cleaning work position, and a stop position relative to the second arm. When the mounting base is in the wall cleaning work position, it is perpendicular to the second arm. When the mounting base is in the photovoltaic cleaning work position, it forms a first preset angle with the second arm and the cleaning roller brush faces downward. When the mounting base is in the stop position, it forms a second preset angle with the second arm and the cleaning roller brush faces upward.

6. The cleaning vehicle according to claim 4, characterized in that, It also includes a support rail, which is located on the top of the vehicle body, and the second arm can rest on the support rail.

7. The cleaning vehicle according to claim 4, characterized in that, The robotic arm assembly also includes a first drive rod, a second drive rod, and a third drive rod, which are respectively connected to the power device. The power device is used to drive the first drive rod, the second drive rod, and the third drive rod to extend and retract. One end of the first drive rod is rotatably connected to the rotary base, and the other end is rotatably connected to the first arm; One end of the second drive rod is rotatably connected to the first arm, and the other end is rotatably connected to the second arm; One end of the third drive rod is rotatably connected to the second arm, and the other end is driven to the mounting base via a linkage assembly, so as to drive the mounting base to rotate relative to the second arm.

8. The cleaning vehicle according to claim 7, characterized in that, The vehicle body also includes two hydraulic oil tanks symmetrically distributed on both sides of the power unit. The two hydraulic oil tanks are connected. The first drive rod, the second drive rod, and the third drive rod are all hydraulic rods. The power unit is connected to the hydraulic oil tanks and each of the hydraulic rods to allow the hydraulic oil in the hydraulic oil tanks to circulate between the hydraulic oil tanks and each of the hydraulic rods.

9. The cleaning vehicle according to claim 8, characterized in that, The power unit includes a power source, multiple oil pumps, a transfer case, and a high-pressure plunger pump. The power source, the transfer case, and the high-pressure plunger pump are arranged along the length of the vehicle body. The multiple oil pumps and the high-pressure plunger pump are all connected to the output end of the transfer case. The input end of the transfer case is connected to the power source. The high-pressure plunger pump is connected to the water supply tank and the nozzle through pipelines. The multiple oil pumps are connected to the hydraulic oil tank and are respectively connected to the multiple hydraulic rods one by one.

10. The cleaning vehicle according to claim 1, characterized in that, The vehicle body is equipped with a tracked chassis at the bottom.

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