Surface cleaning device for solar power generation panel

Abstract

The utility model discloses a surface cleaning device for a solar power generation panel. A plurality of walking wheels are arranged at the bottom of a frame, a box body is arranged on the frame, a lifting cylinder is arranged in the box body, the output end of the lifting cylinder extends out of the box body and is connected with the lower end of a lifting seat, and the inner side of the lifting seat is connected with the outer side of a transmission box; two guide positioning columns are arranged at the lower end of the transmission box, two guide limiting grooves are formed in the upper end of the box body, the guide positioning columns are slidably inserted into the guide limiting grooves respectively, a stand column is arranged at the upper end of the transmission box, and a driving unit is arranged on the cleaning barrel positioning cover and used for driving the cleaning barrel to rotate; a plurality of first spray heads are arranged on the two sides of the cleaning cylinder positioning cover, a plurality of second spray heads are arranged in the mounting cavity, and the second spray heads are located above the cleaning cylinder and connected with the cleaning cylinder positioning cover. The device has the beneficial effects of reducing the labor intensity, being simple in structure, convenient to operate, not easy to damage, low in manufacturing cost and the like.

Description

Technical Field

[0001] This utility model relates to a cleaning device, and more specifically, to a surface cleaning device for solar panels. Background Technology

[0002] With the rapid development of the solar power industry, solar panels are increasingly widely used and play an important role in many fields. However, in actual use, a large amount of dust, dirt, and other impurities inevitably accumulate on the surface of the panels. The presence of these impurities seriously hinders the absorption and conversion of solar energy, thus significantly reducing power generation efficiency and adversely affecting the overall performance of the solar power system. Therefore, cleaning is necessary. However, current methods for cleaning the surface of solar panels face the following problems:

[0003] 1) Manual wiping is the most common cleaning method, but this method is extremely inefficient. Operators need to wipe each power panel individually, which consumes a lot of time and energy. Moreover, if water spraying is required, at least two operators are needed to work together, which results in high labor costs.

[0004] 2) As the cleaning time continues to increase, the physical strength of the operators gradually decreases, which makes it difficult to effectively guarantee the quality of manual cleaning. Incomplete cleaning often occurs, which further affects the performance of the generator panel.

[0005] 3) During manual cleaning, operators need to frequently bend over and climb, which is extremely physically demanding. Especially when cleaning large areas of solar panels, the labor intensity increases exponentially. Working under such high intensity for a long time can easily lead to physical fatigue, which not only greatly reduces work efficiency but also significantly increases safety risks and threatens the personal safety of operators.

[0006] 4) If water spraying is required to improve the cleaning effect during cleaning, an external water source is essential. If there is no external water source in the area where the power generation panels are installed, water spraying cannot be carried out, which greatly limits the choice of cleaning methods. In addition, all the wastewater generated by water spraying is discharged directly to the ground, which will also pollute the surrounding environment.

[0007] In conclusion, existing solar panel surface cleaning technologies have many drawbacks and cannot meet the needs of the industry's rapid development. There is an urgent need for a more efficient, convenient, safe, and environmentally friendly cleaning method. Utility Model Content

[0008] In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by this utility model is to provide a surface cleaning device for solar panels that can effectively solve the above-mentioned technical problems.

[0009] To achieve the above objectives, this utility model provides a surface cleaning device for solar power panels, including a frame, a plurality of wheels at the bottom of the frame, a housing on the frame, a lifting cylinder inside the housing, the output end of the lifting cylinder extending out of the housing and connected to the lower end of the lifting seat, and the inner side of the lifting seat connected to the outer side of the transmission box.

[0010] The lower end of the transmission box is provided with two guide positioning posts, and the upper end of the box body is provided with two guide limiting grooves. Each guide positioning post is slidably inserted into each guide limiting groove. The upper end of the transmission box is provided with a column. The outer side of the column is connected to the outer side of the cleaning cylinder positioning cover through a diagonal brace. The inner side of the cleaning cylinder positioning cover is connected to the transmission box. The cleaning cylinder positioning cover is inclined with the outer side higher than the inner side.

[0011] The cleaning cylinder positioning cover has an installation cavity at its lower end. A cleaning cylinder is rotatably mounted inside the installation cavity. The outer surface of the cleaning cylinder has cleaning bristles. The lower half of the cleaning cylinder extends out of the installation cavity. A drive unit is provided on the cleaning cylinder positioning cover to drive the cleaning cylinder to rotate. Several first nozzles are provided on both sides of the cleaning cylinder positioning cover. Several second nozzles are provided inside the installation cavity. Each second nozzle is located above the cleaning cylinder and connected to the cleaning cylinder positioning cover.

[0012] Furthermore, the frame includes two symmetrically arranged frames, each frame having two wheels mounted at its lower end. The lower half of each frame is connected by several crossbars, and the middle and upper halves of each frame are connected by several positioning rods. The upper end of each frame has a positioning section and an inclined section, and the housing is detachably mounted on the positioning section.

[0013] Furthermore, it also includes a sewage collection tank, which is installed on each inclined section. The sewage collection tank is connected to a sewage collection box, which is installed inside the frame and supported by the crossbar. The sewage collection box is equipped with a drain pipe and a valve. The drain pipe is used to connect to an external hose. The width of the sewage collection tank is greater than the width of the frame.

[0014] Furthermore, each of the inclined sections has a groove in its upper half, and a hanging rod is provided in each of the grooves;

[0015] The upper half of the lower end of the sewage collection tank is provided with two hooks, each hook being hung on a hanging rod. The lower end of the sewage collection tank is in contact with the inclined section and supported by the inclined section. The lower half of the lower end of the sewage collection tank is provided with a first connecting pipe, the diameter of which is smaller than that of the second connecting pipe. The first connecting pipe is sleeved on the second connecting pipe, and the second connecting pipe is provided on the sewage collection tank.

[0016] Furthermore, positioning components are provided on both sides of the cleaning cylinder positioning cover. Each positioning component includes a connecting section and a bending section. The connecting section is connected to the outer wall of the cleaning cylinder positioning cover, and the bending section is connected to the connecting section and extends obliquely downward. A first water inlet pipe is provided above the bending section, and each first nozzle is provided at the lower end of the bending section and simultaneously connected to the first water inlet pipe. A first water inlet connector is provided on the first water inlet pipe.

[0017] The upper end of the cleaning cylinder positioning cover is provided with a second water inlet pipe, and each of the second nozzles is simultaneously connected to the second water inlet pipe. A second water inlet connector is provided on the second water inlet pipe.

[0018] Furthermore, the box body is provided with a first box door, the box body is provided with a water storage tank and a water pump, the upper end of the box body is provided with a second box door for sealing the water storage tank, the water storage tank is connected to the water outlet pipe provided at the upper end of the box body through the water pump, and the first water inlet connector and the second water inlet connector are connected to the water outlet pipe through respective connectors.

[0019] Furthermore, handles are provided on both sides of the box.

[0020] Furthermore, the cleaning cylinder has several drainage holes.

[0021] Furthermore, the drive unit includes a first motor and a first drive shaft disposed in a transmission box. The first drive shaft passes through a first support seat. A second gear and a third gear are respectively disposed at both ends of the first drive shaft. The first motor meshes with the second gear through the first gear, and the third gear meshes with the fourth gear. The fourth gear is connected to the cleaning cylinder through the second drive shaft.

[0022] Furthermore, the transmission box is provided with a third door, and a second support seat is provided inside the transmission box. The first gear and the second gear are rotatably connected to the second support seat.

[0023] The beneficial effects of this utility model are:

[0024] 1. The device is equipped with a drive unit to rotate the cleaning cylinder, which enables efficient cleaning of the surface of the power generation panel. The rotating cleaning cylinder, combined with soft bristles, makes cleaning faster than manual wiping. At the same time, the first and second nozzles spray water to assist in cleaning, moisten the surface of the power generation panel and the cleaning bristles, further improving the cleaning effect and effectively removing dust, dirt and other impurities from the surface of the power generation panel, thereby improving power generation efficiency.

[0025] 2. The mechanically driven cleaning drum reduces reliance on manual labor, eliminating the need for multiple operators to coordinate cleaning operations and lowering labor costs. Furthermore, operators only need to move the frame, making operation relatively easy and reducing labor intensity.

[0026] 3. The cleaning method of rotating the cleaning cylinder and spraying water from the nozzle is not affected by changes in the operator's physical strength, avoiding the problem of incomplete cleaning caused by decreased physical strength during manual cleaning, and can always maintain a stable cleaning quality, ensuring that the performance of the generator panel is not affected;

[0027] 4. Operators do not need to bend over or climb frequently, which reduces the safety risks caused by working at heights and bending over frequently, and ensures the personal safety of operators.

[0028] 5. The device has its own water storage tank, and the water in the tank is delivered to the nozzles by a water pump. Even if there is no external water source in the area where the generator is installed, it can still spray water for cleaning, thus expanding the scope of use of the cleaning device.

[0029] 6. The design of the sewage collection tank and sewage collection box can effectively collect most of the sewage generated during the cleaning process, reducing the situation of sewage being directly discharged to the ground and polluting the surrounding environment. At the same time, the water stored in the water tank can be recycled, improving the utilization rate of water resources and achieving environmental protection and energy conservation.

[0030] 7. The height of the lifting cylinder positioning cover can be adjusted, allowing the cleaning device to adapt to solar panel supports of different heights, meeting the cleaning needs of solar panels under various installation conditions, and thus having wider applicability; it also has the advantages of simple structure, easy operation, not easy to damage, and low manufacturing cost. Attached Figure Description

[0031] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0032] Figure 2 yes Figure 1 A magnified schematic diagram of the structure at point A in the middle.

[0033] Figure 3 This is a structural schematic diagram of a specific embodiment of the present invention.

[0034] Figure 4 yes Figure 3A magnified schematic diagram of the structure at point B in the middle.

[0035] Figure 5 This is a schematic diagram of the structure in which the first motor and other components are installed inside the transmission box.

[0036] Figure 6 This is a schematic diagram of a cleaning tube with cleaning bristles.

[0037] Figure 7 yes Figure 6 A magnified schematic diagram of the structure at point C.

[0038] Figure 8 This is a schematic diagram of a sewage collection tank located at an inclined section.

[0039] Figure 9 yes Figure 8 A magnified schematic diagram of the structure at point D.

[0040] Figure 10 This is a bottom view of the structure where the cleaning cylinder is located inside the mounting cavity.

[0041] Figure 11 yes Figure 10 A magnified schematic diagram of the structure at point E in the middle.

[0042] Figure 12 This is a schematic diagram of a transmission box with guide positioning posts at the bottom.

[0043] Figure 13 This is a schematic diagram of the internal structure of the box.

[0044] Figure 14 This is a schematic diagram of a wastewater collection tank mounted on a vehicle frame.

[0045] Figure 15 yes Figure 14 A magnified schematic diagram of the structure at point F in the middle.

[0046] Figure 16 This is a schematic diagram of the sewage collection tank. Detailed Implementation

[0047] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0048] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0049] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "setting," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of 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.

[0050] like Figures 1 to 16 As shown, a surface cleaning device for solar panels includes a frame 1 with several wheels 2 at the bottom. A housing 3 is mounted on the frame 1, and a lifting cylinder 5 is installed inside the housing 3. The output end of the lifting cylinder 5 extends out of the housing 3 and is connected to the lower end of a lifting seat 6. The inner side of the lifting seat 6 is connected to the outer side of a transmission box 7. The lifting cylinder 5 is a pneumatic cylinder.

[0051] The lower end of the transmission box 7 is provided with two guide positioning posts 8, and the upper end of the box body 3 is provided with two guide limiting grooves 9. Each guide positioning post 8 is slidably inserted into each guide limiting groove 9. The upper end of the transmission box 7 is provided with a column 10. The outer side of the column 10 is connected to the outer side of the cleaning cylinder positioning cover 12 through a diagonal brace 11. The inner side of the cleaning cylinder positioning cover 12 is connected to the transmission box 7. The cleaning cylinder positioning cover 12 is inclined with the outer side higher than the inner side.

[0052] The lower end of the cleaning cylinder positioning cover 12 is provided with an installation cavity 13. A cleaning cylinder 15 is rotatably arranged inside the installation cavity 13. The outer surface of the cleaning cylinder 15 has cleaning bristles 16. When in use, the cleaning bristles 16 should be made of soft material that will not scratch the surface of the photovoltaic panel, such as a soft nylon brush or a sponge brush. The lower half of the cleaning cylinder 15 extends out of the installation cavity 13. A drive unit is provided on the cleaning cylinder positioning cover 12. The drive unit is used to drive the cleaning cylinder 15 to rotate. Several first nozzles 17 are provided on both sides of the cleaning cylinder positioning cover 12. Several second nozzles 18 are provided inside the installation cavity 13. Each second nozzle 18 is located above the cleaning cylinder 15 and connected to the cleaning cylinder positioning cover 12.

[0053] The frame 1 includes two symmetrically arranged frame bodies 19. Each frame body 19 has two wheels 2 installed at its lower end. The lower half of each frame body 19 is connected by several crossbars 20. The middle and upper halves of each frame body 19 are connected by several positioning rods 21. The upper end of each frame body 19 has a positioning section 22 and an inclined section 23. The housing 3 is detachably mounted on the positioning section 22.

[0054] It also includes a sewage collection tank 26, which is installed on each inclined section 23. The sewage collection tank 26 is connected to a sewage collection box 27, which is installed inside the frame 1 and supported by the crossbar 20. A drain pipe 28 is installed on the sewage collection box 27, and a valve is installed on the drain pipe 28. The drain pipe 28 is used to connect to an external hose. The width of the sewage collection tank 26 is greater than the width of the frame 1.

[0055] Each of the inclined sections 23 has a groove 29 in its upper half, and each of the grooves 29 has a hanging rod 30 installed in it.

[0056] The upper half of the lower end of the sewage collection tank 26 is provided with two hooks 31, each hook 31 is hung on each of the hanging rods 30. The lower end of the sewage collection tank 26 is in contact with the inclined section 23 and is supported by the inclined section 23. The lower half of the lower end of the sewage collection tank 26 is provided with a first connecting pipe 32. The diameter of the first connecting pipe 32 is smaller than that of the second connecting pipe 33. The first connecting pipe 32 is sleeved on the second connecting pipe 33. The second connecting pipe 33 is provided on the sewage collection box 27.

[0057] Positioning components 35 are provided on both sides of the cleaning cylinder positioning cover 12. Each positioning component 35 includes a connecting section 36 and a bending section 37. The connecting section 36 is connected to the outer wall of the cleaning cylinder positioning cover 12. The bending section 37 is connected to the connecting section 36 and extends obliquely downward. A first water inlet pipe 38 is provided on the upper part of the bending section 37. Each first nozzle 17 is provided at the lower end of the bending section 37 and is simultaneously connected to the first water inlet pipe 38. A first water inlet connector 39 is provided on the first water inlet pipe 38.

[0058] The upper end of the cleaning cylinder positioning cover 12 is provided with a second water inlet pipe 50, and each of the second nozzles 18 is simultaneously connected to the second water inlet pipe 50. The second water inlet pipe 50 is provided with a second water inlet connector 51.

[0059] The housing 3 is provided with a first door 52. The housing 3 is provided with a water storage tank 53 and a water pump 55. The upper end of the housing 3 is provided with a second door 56 for sealing the water storage tank 53. The water storage tank 53 is connected to the water outlet pipe 57 located at the upper end of the housing 3 through the water pump 55. The first water inlet connector 39 and the second water inlet connector 51 are connected to the water outlet pipe 57 through each connector 58.

[0060] Handles 59 are provided on both sides of the box body 3.

[0061] The cleaning cylinder 15 has several drainage holes 60.

[0062] The drive unit includes a first motor 62 and a first drive shaft 63 disposed within a transmission housing 7. The first drive shaft 63 passes through a first support 65. A second gear 66 and a third gear 67 are respectively disposed at both ends of the first drive shaft 63. The first motor 62 meshes with the second gear 66 via a first gear 68, and the third gear 67 meshes with a fourth gear 69. The fourth gear 69 is connected to the cleaning cylinder 15 via a second drive shaft 70. A third door 71 is provided on the transmission housing 7, and a second support 72 is disposed inside the transmission housing 7. The first gear 68 and the second gear 66 are rotatably connected to the second support 72.

[0063] In addition, this utility model also provides another method for driving the cleaning cylinder 15 to rotate. The driving unit in this method includes a second motor 61, which is installed on the outside of the cleaning cylinder positioning cover 12. The output end of the second motor 61 is connected to one end used to drive the cleaning cylinder 15 to drive the cleaning cylinder 15 to rotate.

[0064] The optimal working principle of this utility model is as follows:

[0065] When in use, the device is moved to the generator plate 99 to be cleaned. The generator plate 99 is mounted by the bracket 98, so that the cleaning cylinder positioning cover 12 is moved to the top of the generator plate 99. Then, the lifting cylinder 5 drives the cleaning cylinder positioning cover 12 to move downward until the cleaning bristles 16 are in contact with the generator plate 99. The rotation of the cleaning cylinder 15 can be driven by two methods.

[0066] Drive method 1: The cleaning cylinder 15 is directly driven to rotate by the second motor 61;

[0067] Drive method 2: The first motor 62 drives the first gear 68 to rotate, the first gear 68 drives the second gear 66 to rotate, the rotation of the second gear 66 drives the third gear 67 to rotate, the rotation of the third gear 67 drives the fourth gear 69 to rotate, and the fourth gear 69 drives the second transmission shaft 70 to rotate, thereby driving the cleaning cylinder 15 to rotate.

[0068] Of the two driving methods mentioned above, the second driving method is preferred. However, in actual use, it is not limited to the two driving methods mentioned above. Any existing method that can drive the cleaning cylinder 15 to rotate can also be used.

[0069] The surface of the generator plate 99 is cleaned by rotating the cleaning cylinder 15, while the operator pushes the frame 1 to move it, thereby cleaning the generator plate 99 along its length;

[0070] In this invention, preferably, during cleaning, water can be sprayed through several first nozzles 17 to wet the surface of the power generation board 99, thereby further improving the cleaning effect. In addition, water can also be sprayed onto the cleaning brush bristles 16 through the second nozzles 18 to clean the cleaning brush 16, thereby further improving the cleaning effect. The drainage holes 60 on the cleaning cylinder 15 can further improve the cleaning effect on the cleaning brush 16 itself and also improve the cleaning effect on the power generation board 99. Furthermore, in the prior art, the cleaning brush 16 will accumulate stains after a certain period of use, thus affecting the cleaning of the power generation board. To avoid this problem, it is necessary to rinse it irregularly according to the cleaning intensity. When rinsing, the cleaning work cannot continue, thus affecting efficiency and increasing the labor intensity of the operator. In this invention, since the cleaning brush 16 is cleaned by the second nozzles 18 during the cleaning process, it is not necessary to clean the cleaning brush 16 separately after a period of use, reducing the number of times the cleaning brush 16 is cleaned separately, improving efficiency, and reducing the labor intensity of the operator.

[0071] In a further preferred embodiment, when the second nozzle 18 and the first nozzle 17 are used, water from the water storage tank 53 flows out through the water outlet pipe 57 under the action of the water pump 55, and is connected to the first water inlet connector 39 and the second water inlet connector 51 respectively through the connector 58, so that the water is delivered to the first nozzle 17 and the second nozzle 18. With the above structure, the second nozzle 18 and the first nozzle 17 do not need to be directly connected to an external water source, avoiding dragging a long strip of water pipe during the cleaning process. Moreover, since water can be stored in the water storage tank 53, cleaning can be carried out even without an external water source.

[0072] In addition, most of the wastewater generated during the cleaning process flows into the wastewater collection tank 26 along the inclined generator plate. The wastewater collection tank 26 is wider than the frame 1, increasing the wastewater collection space and enabling better wastewater collection. The wastewater flows into the wastewater collection box 27 through the first connecting pipe 32 at the lower end of the collection tank. The collection box is supported inside the frame 1 by the crossbar 20. When discharge is required, the drain pipe 28 valve is opened, and the external hose discharges the wastewater. Since the collection tank 26 is hung on the frame 19, it can be installed or not depending on actual needs.

[0073] In addition, the height can be adjusted by lifting cylinder 5, which not only facilitates the fit with the generator plate 99 and improves the cleaning effect, but also makes it suitable for brackets 98 of different heights, thus making it more versatile.

[0074] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A surface cleaning apparatus for a solar panel, characterized by: The utility model provides a kind of cleaning vehicle, including frame (1), the bottom of the frame (1) is provided with several walking wheels (2), the frame (1) is provided with box (3), the box (3) is provided with lifting cylinder (5) inside, the output end of the lifting cylinder (5) extends out of box (3), and is connected with the lower end of lifting seat (6), the inner side of the lifting seat (6) is connected with the outer side of transmission case (7); The lower end of the transmission case (7) is provided with two guide positioning columns (8), the upper end of the box (3) is provided with two guide limiting grooves (9), each guide positioning column (8) is respectively slidably inserted into each guide limiting groove (9), the upper end of the transmission case (7) is provided with a vertical column (10), the outer side of the vertical column (10) is connected with the outer side of the cleaning cylinder positioning cover (12) through the inclined strut (11), the inner side of the cleaning cylinder positioning cover (12) is connected with the transmission case (7), the cleaning cylinder positioning cover (12) is inclinedly arranged with high outside and low inside; The lower end of the cleaning cylinder positioning cover (12) is provided with a mounting cavity (13), the cleaning cylinder (15) is rotatably arranged in the mounting cavity (13), the outer surface of the cleaning cylinder (15) has cleaning bristles (16), the lower half of the cleaning cylinder (15) extends out of the mounting cavity (13), the cleaning cylinder positioning cover (12) is provided with a driving unit, the driving unit is used to drive the cleaning cylinder (15) to rotate, the two sides of the cleaning cylinder positioning cover (12) are provided with a plurality of first spray heads (17), a plurality of second spray heads (18) are arranged in the mounting cavity (13), each second spray head (18) is located above the cleaning cylinder (15) and is connected with the cleaning cylinder positioning cover (12).

2. The surface cleaning apparatus of claim 1 wherein: The frame (1) includes two frame bodies (19) arranged symmetrically with each other, two walking wheels (2) are mounted at the lower end of each frame body (19), the lower half of each frame body (19) is connected by a plurality of cross bars (20), the middle section and the upper half of each frame body (19) are connected by a plurality of positioning rods (21), the upper end of each frame body (19) has a positioning section (22) and an inclined section (23), and the box (3) is detachably arranged on the positioning section (22).

3. The surface cleaning device for solar panels as described in claim 2, characterized in that: Further comprising a sewage collection tank (26), the sewage collection tank (26) is arranged on each inclined section (23), the sewage collection tank (26) is communicated with a sewage collection tank (27), the sewage collection tank (27) is arranged in the frame (1) and is supported by the cross bar (20), a drain pipe (28) is arranged on the sewage collection tank (27), a valve is arranged on the drain pipe (28), the drain pipe (28) is used for being connected with an external hose, and the width of the sewage collection tank (26) is greater than the width of the frame (1).

4. The surface cleaning apparatus of claim 3 wherein: The upper half of each inclined section (23) is provided with a groove (29), and a hanging rod (30) is arranged in each groove (29). The lower end of the sewage collecting tank (26) is provided with two hooks (31), each of which is hung on each of the hanging rods (30), the lower end of the sewage collecting tank (26) is attached to the inclined section (23) and is supported by the inclined section (23), and the lower end of the sewage collecting tank (26) is provided with a first connecting pipe (32), the diameter of the first connecting pipe (32) is smaller than that of the second connecting pipe (33), the first connecting pipe (32) is sleeved on the second connecting pipe (33), and the second connecting pipe (33) is arranged on the sewage collecting tank (27).

5. The surface cleaning apparatus of claim 4 wherein: The two sides of the cleaning cylinder positioning cover (12) are provided with positioning pieces (35), the positioning pieces (35) comprise connecting sections (36) and bent sections (37), the connecting sections (36) are connected with the outer wall of the cleaning cylinder positioning cover (12), the bent sections (37) are connected with the connecting sections (36) and extend obliquely downward, the upper side of the bent section (37) is provided with a first water inlet pipe (38), each of the first nozzles (17) is arranged at the lower end of the bent section (37) and communicates with the first water inlet pipe (38), and the first water inlet pipe (38) is provided with a first water inlet connector (39). The upper end of the cleaning cylinder positioning cover (12) is provided with a second water inlet pipe (50), each of the second nozzles (18) communicates with the second water inlet pipe (50), and the second water inlet pipe (50) is provided with a second water inlet connector (51).

6. The surface cleaning apparatus of claim 5 wherein: The box body (3) is provided with a first box door (52), the box body (3) is provided with a water storage tank (53) and a water pump (55), the upper end of the box body (3) is provided with a second box door (56) for closing the water storage tank (53), the water storage tank (53) is connected with a water outlet pipe (57) arranged at the upper end of the box body (3) through the water pump (55), and the first water inlet connector (39) and the second water inlet connector (51) are connected with the water outlet pipe (57) through respective connectors (58).

7. The surface cleaning apparatus of claim 6 wherein: The two sides of the box body (3) are provided with handles (59).

8. The surface cleaning apparatus of claim 7 wherein: A plurality of water leakage holes (60) are formed in the cleaning cylinder (15).

9. The surface cleaning apparatus of claim 8 wherein: The driving unit comprises a first motor (62) and a first transmission shaft (63) arranged in the transmission box (7), the first transmission shaft (63) penetrates through a first supporting seat (65), the two ends of the first transmission shaft (63) are respectively provided with a second gear (66) and a third gear (67), the first motor (62) is meshed with the second gear (66) through a first gear (68), the third gear (67) is meshed with a fourth gear (69), and the fourth gear (69) is connected with the cleaning cylinder (15) through a second transmission shaft (70).

10. The surface cleaning apparatus of claim 9 wherein: The transmission box (7) is provided with a third box door (71), and the first gear (68) and the second gear (66) are rotatably connected with a second supporting seat (72) arranged in the transmission box (7).

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