Cleaning robot

Abstract

The utility model discloses a kind of cleaning robots, it is related to cleaning equipment technical field.The cleaning robot includes chassis, cleaning assembly, washing assembly, water suctioning scraper assembly, dust suction box, clean water tank, sewage tank and sewage tank self-cleaning system, cleaning assembly, washing assembly and water suctioning scraper assembly are all liftably connected below chassis, and sequentially arranged along the direction of travel of cleaning robot.Dust suction box is located between cleaning assembly and washing assembly, and the dust suction port of dust suction box is towards cleaning assembly.Clean water tank is located on chassis, and is connected with washing assembly by water supply pipeline.Sewage tank is located on chassis and is located above clean water tank, and is connected with water suctioning scraper assembly by sewage suction pipeline.Sewage tank self-cleaning system includes self-cleaning nozzle, self-cleaning nozzle is located in the cavity of sewage tank, and is connected with clean water tank by self-cleaning pipeline.The cleaning robot is while guaranteeing the completeness of function, realizes dry and wet separation, improves the compactness of the structure of whole machine, safety and reliability.

Description

Technical Field

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

[0002] As an important piece of equipment for modern urban management and service automation, cleaning robots have expanded their application scenarios from indoor environments to various outdoor and large semi-enclosed areas such as squares, parks, communities, and underground parking garages. Faced with these complex and diverse operating environments, the market has placed higher demands on the functional integration of cleaning robots, driving their development from a single cleaning function to a composite function that integrates sweeping, floor washing, and wastewater recycling.

[0003] However, the superposition of functional modules inevitably leads to increased complexity in the internal structure. Currently, to achieve the aforementioned composite functions, cleaning robots need to simultaneously accommodate sweeping components, washing components, squeegee components, clean water tanks, wastewater tanks, and a large number of connecting pipes. Limited by the compact internal space, existing designs often struggle to scientifically plan and effectively isolate these functional modules, resulting in two prominent technical defects: First, incomplete "dry-wet separation" leads to decreased cleaning efficiency. Because sweeping and wet washing functions are not effectively separated in spatial layout or lack coordination in their operation sequence, liquid wastewater generated during cleaning is easily splashed or spread to the area to be cleaned. This causes lightweight dry waste such as paper and plastic bags to adhere tightly to the ground due to moisture absorption, making it difficult for conventional sweeping components to effectively recover. This not only severely affects the instantaneous cleaning effect but may also cause blockage of the cleaning channels, ultimately reducing overall operational efficiency. Second, the wastewater tank presents poor maintenance and hygiene risks. The recovered wastewater contains a mixture of sludge, grease, hair, and other complex pollutants, which easily accumulate on the inner walls of the wastewater tank and in the drainage pipes, breeding bacteria and odors. Users must frequently disassemble and manually clean the wastewater tank, a process that is neither convenient nor hygienic. If cleaning is not timely, the accumulation of dirt will directly affect the suction power of the squeegee and the efficiency of wastewater recovery, creating a vicious cycle that damages the long-term working performance and reliability of the equipment.

[0004] Therefore, how to rationally arrange the functional modules of a cleaning robot within a limited space to completely achieve "dry and wet separation" operations and improve the automatic maintenance capabilities of key components (such as wastewater tanks) has become a key technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] The purpose of this utility model is to provide a cleaning robot that integrates sweeping, cleaning and vacuuming functions, while rationally arranging the various components of the cleaning robot to avoid interference between dry and wet operations and to achieve automatic maintenance of the sewage tank.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A cleaning robot, comprising:

[0008] Chassis;

[0009] The sweeping assembly, floor scrubbing assembly, and squeegee assembly can all be vertically connected to the underside of the chassis and arranged sequentially along the direction of travel of the cleaning robot;

[0010] A dust collection box is disposed between the sweeping component and the floor washing component, with the dust collection port of the dust collection box facing the sweeping component;

[0011] A clean water tank is mounted on the chassis and connected to the floor cleaning assembly via a water supply pipeline;

[0012] A wastewater tank is mounted on the chassis and located above the clean water tank, and is connected to the squeegee assembly via a suction pipe;

[0013] A wastewater tank self-cleaning system includes a self-cleaning nozzle, which is located inside the wastewater tank and connected to the clean water tank via a self-cleaning pipeline.

[0014] As an optional embodiment of the cleaning robot, it also includes a support column, which is fixed to the chassis and located on the front and rear sides of the cleaning robot. Both the clean water tank and the wastewater tank are installed on the support column.

[0015] As an optional embodiment of the cleaning robot, a first isolation cavity is formed between the clean water tank and the wastewater tank. The cleaning robot also includes a PCB assembly, which is housed in the first isolation cavity and fixed to the support column located at the front of the cleaning robot.

[0016] The opening of the first isolation chamber faces the front of the cleaning robot.

[0017] As an optional embodiment of the cleaning robot, a second isolation chamber is provided at the rear of the clean water tank. The cleaning robot also includes a battery pack assembly, which is housed in the second isolation chamber and slidably connected to the chassis.

[0018] The opening of the second isolation chamber faces the rear of the cleaning robot.

[0019] As an optional solution for the cleaning robot, the wastewater tank self-cleaning system also includes a self-cleaning pump, which is located on the self-cleaning pipeline;

[0020] The self-cleaning pump and part of the self-cleaning pipeline are located at the rear of the cleaning robot and are isolated from the battery pack assembly by a water baffle.

[0021] As an optional feature of the cleaning robot, an isolation skirt for separating dry and wet areas is also provided between the dust collection box and the floor washing component.

[0022] As an optional embodiment of the cleaning robot, the cleaning robot also includes a blower and an air inlet pipe. The blower is connected to the sewage tank through the air inlet pipe to create a negative pressure in the sewage tank, so that the sewage adsorbed by the squeegee assembly enters the sewage tank through the suction pipe.

[0023] As an optional embodiment of the cleaning robot, the cleaning robot also includes a filter basket assembly, the sewage suction pipe is connected to the filter basket assembly, and a HEPA filter assembly is provided at the connection between the air inlet pipe and the sewage tank.

[0024] As an optional embodiment of the cleaning robot, the cleaning robot further includes a cleaning liquid tank and a mixing tank. The cleaning liquid tank is used to hold the cleaning liquid. The clean water tank and the cleaning liquid tank are respectively connected to the mixing tank through pipelines. The mixing tank is located at the bottom of the clean water tank, and the mixing outlet of the mixing tank is connected to the floor cleaning assembly.

[0025] As an optional feature of the cleaning robot, the top of the sewage tank is provided with a manual water inlet, which is sealed by a water inlet cap;

[0026] The filter basket assembly, the HEPA tank assembly, the cleaning solution box, and the water filling cap together cover and seal the top opening of the wastewater tank.

[0027] As an optional embodiment of the cleaning robot, the cleaning robot further includes:

[0028] An automatic sewage discharge assembly is connected to the sewage tank's discharge port and a manual sewage discharge pipe via a T-junction pipe;

[0029] An automatic water inlet is connected to the clean water tank via a water inlet pipe.

[0030] The beneficial effects of this utility model are:

[0031] The cleaning robot provided by this utility model achieves a front-to-back separation layout for the sweeping and washing components by arranging the sweeping, washing, and squeegee components sequentially along the robot's direction of travel. A dust collection box is positioned between the sweeping and washing components, with its suction port drawing in the debris swept by the sweeping components. This achieves thorough "dry and wet separation" in terms of both physical space and workflow, effectively preventing the reduction in cleaning efficiency caused by dry debris adhering to the ground upon contact with moisture. An integrated wastewater tank self-cleaning system provides clean water to the self-cleaning nozzles via a self-cleaning pipeline, automatically cleaning the interior of the wastewater tank, reducing manual intervention and preventing the accumulation of dirt from affecting cleaning performance. This cleaning robot, within a limited space, strategically arranges components such as the clean water tank and wastewater tank, ensuring the robot's functionality while achieving dry and wet separation, thus improving the overall compactness, safety, and reliability of the machine. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the internal structure of the front side of the cleaning robot provided in this embodiment of the utility model;

[0033] Figure 2 This is a schematic diagram of the structure below the chassis of the cleaning robot provided in this embodiment of the utility model;

[0034] Figure 3 This is a schematic diagram of the rear internal structure of the cleaning robot provided in this embodiment of the utility model;

[0035] Figure 4 This is a first cross-sectional schematic diagram of the cleaning robot provided in this embodiment of the utility model;

[0036] Figure 5 This is a second cross-sectional schematic diagram of the cleaning robot provided in this embodiment of the utility model;

[0037] Figure 6 This is a third cross-sectional schematic diagram of the cleaning robot provided in this embodiment of the utility model.

[0038] In the picture:

[0039] 1. Outer casing; 2. Chassis; 3. Sweeping assembly; 4. Floor scrubbing assembly; 5. Squeegee assembly; 6. Dustbin; 7. Clean water tank; 8. Waste water tank; 81. Hook; 82. Waste water inlet pipe; 9. Self-cleaning nozzle; 10. Support column; 11. PCB assembly; 12. Battery pack assembly; 13. Self-cleaning pump; 14. Water baffle; 15. Isolation skirt; 16. Fan; 17. Air inlet pipe; 18. Filter basket assembly; 19. HEPA filter. Components: 191. Connecting pipe; 20. Cleaning liquid box; 21. Mixing liquid box; 211. Clean water inlet; 22. Water filling cap; 23. Automatic sewage discharge component; 24. Automatic water filling port; 25. Drive wheel; 26. Sewage suction pipe; 27. Water filling pipe; 28. Exhaust pipe; 29. ​​Slide rail assembly; 30. Manual sewage discharge pipe; 31. T-connector; 32. Charging electrode; 33. Self-cleaning pipe; 34. Lifting mechanism; 35. Plastic hose. Detailed Implementation

[0040] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0041] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0042] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and connections within two components or interactions between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] Unless otherwise expressly specified and limited, "above" or "below" a 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 a 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" of a 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.

[0044] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0045] like Figures 1-6 As shown, this embodiment provides a cleaning robot, including a shell 1, a chassis 2, a sweeping assembly 3, a floor scrubbing assembly 4, a squeegee assembly 5, a dust collection box 6, a clean water tank 7, a wastewater tank 8, and a wastewater tank self-cleaning system. The sweeping assembly 3, the floor scrubbing assembly 4, and the squeegee assembly 5 are all vertically connected to the underside of the chassis 2 and arranged sequentially along the direction of travel of the cleaning robot. The dust collection box 6 is located between the sweeping assembly 3 and the floor scrubbing assembly 4, with the suction port of the dust collection box 6 facing the sweeping assembly 3. The sweeping assembly 3 includes two side-by-side sweeping brushes. During sweeping, the side brushes rotate to sweep away dry debris on the ground. The dust collection box 6 is equipped with a suction fan, which, under the suction of the suction fan, draws the dry debris swept by the side brushes into the dust collection box 6 through the suction port. The floor scrubbing assembly 4 includes two side-by-side cleaning brushes. A clean water tank 7 is mounted on the chassis 2 and connected to the floor scrubbing assembly 4 via a water supply pipe. During cleaning, a water pump on the water supply pipe is activated to release clean water, which, in conjunction with the rotation of the cleaning brushes, achieves the floor cleaning function. A dust collection box 6 is fixed to the cleaning brushes and rises and falls with them. Two drive wheels 25 are also provided at the lower end of the chassis 2, located between the floor scrubbing assembly 4 and the squeegee assembly 5. A suction port is provided in the middle of the squeegee assembly 5. A wastewater tank 8 is mounted on the chassis 2 and located above the clean water tank 7, connected to the suction port of the squeegee assembly 5 via a suction pipe 26. The specific structure of the lifting mechanism 34, which allows the sweeping assembly 3, floor scrubbing assembly 4, and squeegee assembly 5 to be raised and lowered to the chassis 2, can be referenced from existing technology designs. This is not the focus of improvement in this embodiment and will not be elaborated further here.

[0046] The cleaning robot provided in this embodiment achieves front-side sweeping, middle-side washing, and rear-side vacuuming by arranging the sweeping component 3, the floor-washing component 4, and the squeegee component 5 sequentially along the robot's direction of travel. The sweeping component 3 and the floor-washing component 4 are arranged in a front-to-back separate layout, with a dust collection box 6 placed between them. The suction port of the dust collection box 6 sucks the debris swept by the sweeping component 3 into the dust collection box 6, achieving thorough "dry and wet separation" in terms of physical space and workflow, effectively preventing the problem of reduced cleaning efficiency caused by dry debris adhering to the ground due to contact with moisture.

[0047] In one embodiment, a separating skirt 15 for dry and wet separation is also provided between the dust collection box 6 and the floor washing assembly 4. The separating skirt 15 is typically made of rubber or flexible plastic, with its bottom in contact with the ground. As a soft physical barrier, the separating skirt 15 spatially separates the two functional areas of "dry cleaning" and "wet cleaning" below the chassis 2, preventing dry debris stirred up by the front cleaning from being carried into the rear wet area, thus avoiding the mixing of this dry debris with the wastewater and forming more difficult-to-clean sludge, thereby ensuring cleaning efficiency.

[0048] In one embodiment, the cleaning robot further includes a blower 16 and an air inlet pipe 17. The blower 16 is connected to the wastewater tank 8 through the air inlet pipe 17 to create a negative pressure inside the wastewater tank 8, so that the wastewater adsorbed by the squeegee assembly 5 enters the wastewater tank 8 through the suction pipe 26. The blower 16 is located at the rear of the wastewater tank 8. The air inlet of the blower 16 is connected to the inner cavity of the wastewater tank 8 through the air inlet pipe 17, and the air outlet of the blower 16 is connected to the outside of the cleaning robot through the exhaust pipe 28. The blower 16 draws air from the inner cavity of the wastewater tank 8 through the air inlet pipe 17, creating a negative pressure inside the wastewater tank 8, which facilitates the entry of wastewater into the wastewater tank 8. The air entering the blower 16 is discharged into the air through the exhaust pipe 28.

[0049] In one embodiment, the cleaning robot further includes a filter basket assembly 18, a suction pipe 26 connected to the filter basket assembly 18, and a HEPA filter chamber assembly 19 located at the connection between the air inlet pipe 17 and the wastewater tank 8. The filter basket assembly 18 intercepts and stores all sucked-in solid or semi-solid waste, achieving solid-liquid separation and preventing solid waste from entering subsequent processes. Air, rich in fine dust and droplets after initial filtration by the filter basket, then enters the HEPA filter chamber assembly 19. The filter in the HEPA filter chamber assembly 19 can capture over 99.97% of 0.3-micron particles, including pollen, mites, bacteria, mold spores, and fine dust and moisture. This tiered treatment method significantly reduces the burden on the filter, preventing larger pieces of waste from quickly clogging the fine filter, thereby extending the filter's lifespan and reducing maintenance frequency and costs. The fan 16 draws air through the HEPA filter chamber assembly 19, creating negative pressure throughout the wastewater recycling path. The HEPA filter chamber assembly 19 ensures that the air exhausted from the cleaning robot is clean, maintaining indoor air quality.

[0050] For example, the inlet of the filter basket assembly 18 is connected to the sewage inlet pipe 82 of the sewage tank 8, and the sewage inlet pipe 82 is connected to the suction pipe 26, so that the sewage adsorbed by the squeegee assembly 5 enters the filter basket assembly 18 for filtration through the suction pipe 26 and the inlet pipe of the filter basket assembly 18, and then enters the inner cavity of the sewage tank 8. The connecting pipe 191 of the HEPA filter assembly 19 is connected to the air inlet pipe 17, so that the air in the inner cavity of the sewage tank 8 enters the blower 16 through the connecting pipe 191 and the air inlet pipe 17 after passing through the HEPA filter assembly 19, and is discharged into the air through the exhaust pipe 28.

[0051] In one embodiment, the cleaning robot further includes a cleaning liquid tank 20 and a mixing tank 21. The cleaning liquid tank 20 is used to hold the cleaning liquid. The clean water tank 7 and the cleaning liquid tank 20 are respectively connected to the mixing tank 21 through pipes. The mixing tank 21 is located at the bottom of the clean water tank 7, and the mixing outlet of the mixing tank 21 is connected to the floor cleaning component 4. By setting up an independent mixing tank 21, the clean water and cleaning liquid are pre-mixed between the supply to the floor cleaning component 4, which can precisely control the mixing ratio of clean water and cleaning liquid, ensuring that the optimal concentration of the mixture is used each time. This avoids problems such as insufficient cleaning liquid leading to poor cleaning effect, or excessive cleaning liquid leading to sticky floors, residual foam, and waste. Users only need to add cleaning liquid to the cleaning liquid tank 20 periodically, eliminating the need to manually prepare cleaning liquid each time, thus improving convenience.

[0052] For example, the outer wall of the cleaning fluid container 20 engages with the hook 81 on the inner side of the wastewater tank 8, enabling quick assembly and disassembly. The bottom wall of the clean water tank 7 has a recessed cavity, within which the mixing container 21 is housed. The cleaning fluid container 20 is connected to the cleaning fluid inlet of the mixing container 21 via a plastic hose 35, and the clean water tank 7 is connected to the clean water inlet 211 of the mixing container 21 via a water pipe.

[0053] In one embodiment, a manual water inlet is provided on the top of the wastewater tank 8, which is sealed by a water inlet cover 22. The filter basket assembly 18, the HEPA filter chamber assembly 19, the cleaning fluid box 20, and the water inlet cover 22 together cover and seal the top opening of the wastewater tank 8. This design efficiently divides the largest planar area on the top of the wastewater tank 8 into different functions, avoiding the need to design separate mounting positions and openings for each component, resulting in a compact overall structure and saving internal space. It also greatly simplifies the daily maintenance process of the cleaning robot; simply removing the top cover of the outer shell 1 allows for the one-time emptying of solid waste from the filter basket assembly 18, cleaning or replacement of the filter screen in the HEPA filter chamber assembly 19, adding cleaning fluid to the cleaning fluid box 20, and emergency water replenishment or cleaning of the wastewater tank 8 via the manual water inlet. The cleaning robot's suction function relies on the stable negative pressure created by the blower 16 within the wastewater tank 8. The wastewater tank 8 must be a highly sealed container; any air leakage will cause a significant decrease in suction power. The filter basket assembly 18, the HEPA tank assembly 19, the cleaning liquid box 20, and the water filling cover 22 are equivalent to an integrated sealing plate. The top opening of the sewage tank 8 is uniformly sealed by an integrated sealing plate, which ensures that the squeegee assembly 5 can obtain continuous and strong suction and guarantee sewage recycling efficiency.

[0054] The wastewater tank self-cleaning system includes a self-cleaning nozzle 9, which is located inside the wastewater tank 8 and connected to the clean water tank 7 via a self-cleaning pipe 33. By integrating the wastewater tank self-cleaning system, the clean water tank 7 provides clean water to the self-cleaning nozzle 9 through the self-cleaning pipe 33. The self-cleaning nozzle 9 sprays clean water onto the inner wall of the wastewater tank 8, automatically cleaning the inner cavity of the wastewater tank 8, reducing manual intervention and avoiding the impact of dirt accumulation on the cleaning effect.

[0055] For example, the self-cleaning nozzle 9 can spray a cone-shaped mist to clean the perimeter of the inner cavity of the wastewater tank 8. Of course, there can be one or more self-cleaning nozzles 9, and the self-cleaning efficiency of the wastewater tank 8 can be improved by setting multiple self-cleaning nozzles 9.

[0056] The outer shell 1 covers the wastewater tank 8, the clean water tank 7, and the wastewater tank self-cleaning system, protecting their internal structures while maintaining the cleaning robot's aesthetic appeal. Within a limited space, the layout of components such as the clean water tank 7 and the wastewater tank 8 ensures the robot's functionality while improving its overall structural compactness, safety, and reliability.

[0057] In one embodiment, the cleaning robot also includes support columns 10, which are fixed to the chassis 2 and located on the front and rear sides of the cleaning robot. The clean water tank 7 and the wastewater tank 8 are both mounted on the support columns 10. The front and rear support columns 10 and the chassis 2 form a robust frame structure. The clean water tank 7 and the wastewater tank 8, as heavy-duty components, are securely mounted on this rigid frame, rather than being directly suspended or attached to other non-load-bearing components. This effectively prevents the heavy-duty clean water tank 7 and wastewater tank 8 from swaying when the cleaning robot moves, overcomes obstacles, or vibrates, ensuring the stability of the overall center of gravity and improving its motion performance.

[0058] For example, four support columns 10 are provided, two on each of the front and rear sides. The two front support columns 10 are connected to the two ends of the front sidewalls of the wastewater tank 8 and the clean water tank 7 by fastening screws, and the two rear support columns 10 are connected to the two ends of the rear sidewalls of the wastewater tank 8 and the clean water tank 7 by fastening screws. The support columns 10 fix the clean water tank 7 and the wastewater tank 8 on a common reference plane, ensuring the relative positional accuracy between the clean water tank 7, the wastewater tank 8, and the floor scrubbing assembly 4 and the squeegee assembly 5 connected thereto, which helps to ensure assembly quality and functional consistency.

[0059] In one embodiment, a first isolation cavity is formed between the clean water tank 7 and the wastewater tank 8. The cleaning robot also includes a PCB assembly 11, which is housed within the first isolation cavity and fixed to a support column 10 located at the front of the cleaning robot. The PCB assembly 11 is the control unit of the cleaning robot, processing data from all sensors and making decisions accordingly to control the robot's movement, cleaning, and obstacle avoidance. If damaged or malfunctioning, the entire cleaning robot will be paralyzed. Therefore, the PCB assembly 11 needs to be protected inside the cleaning robot to achieve water and electricity isolation. Placing the PCB assembly 11 above the clean water tank 7 and below the wastewater tank 8 prevents condensate from the clean water tank 7 from dripping onto the PCB assembly 11 while also preventing accidental splashing of wastewater from the wastewater tank 8.

[0060] The opening of the first isolation chamber faces the front of the cleaning robot. Heat dissipation holes are provided on the outer shell 1 at the position corresponding to the opening of the first isolation chamber. When the cleaning robot moves forward, the air in front flows naturally into the first isolation chamber through the heat dissipation holes, creating a "collision wind" effect, providing efficient passive heat dissipation for the high-power PCB assembly 11. Furthermore, the front-facing opening of the first isolation chamber, fixed to the front support column 10, makes the PCB assembly 11 an easily accessible independent unit. During inspection and maintenance, there is no need for extensive disassembly of the entire machine; only the outer shell 1 needs to be removed for maintenance of the PCB assembly 11, greatly reducing maintenance costs and time. Fixing the PCB assembly 11 to the high-strength support column 10, rather than the outer shell 1, effectively reduces the impact of vibrations generated during the cleaning robot's movement and obstacle crossing on solder joints and components, improving reliability.

[0061] For example, the front side wall and top of the clean water tank 7 are provided with a concave cavity, which is formed by the concave cavity and the bottom wall of the sewage tank 8 to form a first isolation cavity with a front opening.

[0062] In one embodiment, a second isolation chamber is provided at the rear of the clean water tank 7. The cleaning robot also includes a battery pack assembly 12, which is housed within the second isolation chamber and slidably connected to the chassis 2. The opening of the second isolation chamber faces the rear of the cleaning robot. The battery pack assembly 12 provides power to all electric components of the cleaning robot, including the motors of the drive wheels 25, the sweeping motor, the vacuum fan, the water pump, the lifting mechanism 34, sensors, and the PCB assembly 11. The high-strength chassis 2 supports the battery pack assembly 12, effectively resisting bumps and impacts from the bottom and sides. Sliding the battery pack assembly 12 to the chassis 2 with its opening facing the rear of the cleaning robot facilitates the disassembly and maintenance of the battery pack assembly 12, reducing maintenance time and costs.

[0063] The rear side of the sewage tank 8 is also provided with charging electrode 32, which is used to contact and fit tightly with the charging electrode 32 on the charging base, so that the circuit is connected and the electrical energy is input from the power grid through the charging base and finally through the two charging electrode 32 into the battery pack assembly 12.

[0064] For example, a slide rail assembly 29 is provided on the chassis 2, and the battery pack assembly 12 includes a battery pack and a mounting bracket. The battery pack is fixed on the mounting bracket, and the mounting bracket slides in cooperation with the slide rail assembly 29 and can be fixed by fastening screws.

[0065] In one embodiment, the wastewater tank self-cleaning system further includes a self-cleaning pump 13, which is mounted on the self-cleaning pipeline 33. The self-cleaning pump 13 and part of the self-cleaning pipeline 33 are located at the rear of the cleaning robot and are isolated from the battery pack assembly 12 by a water baffle 14. There is a risk of water leakage when the water pressure in the self-cleaning pump 13 and the self-cleaning pipeline 33 is high. The battery pack assembly 12 is expensive and extremely sensitive to water; a short circuit due to leakage could lead to malfunctions, shutdowns, or even safety accidents. The water baffle 14 ensures that even if there is a slight leak in the self-cleaning pump 13 and the self-cleaning pipeline 33, the water droplets will be confined to one side of the water baffle 14 and will not affect the battery pack assembly 12.

[0066] For example, the chassis 2, the rear side wall of the clean water tank 7 and the baffle plate 14 enclose a second isolation cavity with a rear opening.

[0067] In one embodiment, the cleaning robot further includes an automatic sewage discharge component 23 and an automatic water inlet 24. The automatic sewage discharge component 23 is connected to the sewage outlet of the sewage tank 8 and a manual sewage discharge pipe 30 via a T-connector 31. The automatic water inlet 24 is connected to the clean water tank 7 via a water inlet pipe 27. This achieves automatic water filling and draining functions for the cleaning robot, so that the cleaning robot only needs to stop operating when the clean water is exhausted or the sewage overflows, simplifying operation and increasing ease of use.

[0068] The T-connector 31 in the automatic sewage discharge assembly 23 integrates automatic and manual sewage discharge functions into a single, redundant backup system. Even if the automatic function fails, the manual mode can still ensure that sewage can be discharged, preventing the entire unit from malfunctioning and greatly improving the system's robustness.

[0069] The automatic sewage discharge component 23 and automatic water inlet 24 are standardized and centrally arranged for quick and reliable docking with the automatic cleaning base. The cleaning robot returns to the automatic cleaning base and docks with it. The sewage pump inside the automatic cleaning base starts, creating negative pressure in the sewage tank 8. The sewage in the sewage tank 8 is sucked into the suction pipe of the automatic cleaning base through the sewage outlet and finally discharged into the large-capacity sewage collection tank inside the automatic cleaning base. The clean water outlet on the automatic cleaning base is sealed to the automatic water inlet 24 of the clean water tank 7. When the water level sensor in the clean water tank 7 detects that the liquid level in the clean water tank 7 is lower than the set value, the cleaning robot sends a signal to the automatic cleaning base, and the water inlet solenoid valve inside the automatic cleaning base opens, injecting water into the clean water tank 7 through the water inlet pipe 27. When the water level sensor detects that the water level has reached the preset upper limit, the water inlet solenoid valve closes and the water injection stops.

[0070] The cleaning robot provided in this embodiment integrates sweeping, washing, and vacuuming functions, and also adds automatic water filling and drainage, simplifying operation, increasing ease of use, and enabling it to meet the requirements of complex environments. Furthermore, the sweeping and washing functions are physically separated to achieve dry and wet separation, effectively preventing dry waste from sticking to the ground due to moisture and resulting in incomplete cleaning, thus improving cleaning efficiency. The wastewater tank self-cleaning system makes the cleaning robot more intelligent, and the water and electricity isolation design increases safety and reliability.

[0071] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A cleaning robot, characterized in that, include: Chassis (2); The sweeping assembly (3), the floor washing assembly (4), and the squeegee assembly (5) can all be vertically connected to the underside of the chassis (2) and arranged sequentially along the direction of travel of the cleaning robot; A dust collection box (6) is disposed between the cleaning assembly (3) and the floor washing assembly (4), and the dust collection port of the dust collection box (6) faces the cleaning assembly (3); A clean water tank (7) is located on the chassis (2) and connected to the floor cleaning assembly (4) via a water supply pipeline; The sewage tank (8) is located on the chassis (2) and above the clean water tank (7), and is connected to the squeegee assembly (5) through the sewage suction pipe (26); The wastewater tank self-cleaning system includes a self-cleaning nozzle (9), which is located in the inner cavity of the wastewater tank (8) and connected to the clean water tank (7) through a self-cleaning pipeline (33).

2. The cleaning robot according to claim 1, characterized in that, It also includes a support column (10), which is fixed on the chassis (2) and located on the front and rear sides of the cleaning robot. The clean water tank (7) and the wastewater tank (8) are both installed on the support column (10).

3. The cleaning robot according to claim 2, characterized in that, A first isolation cavity is formed between the clean water tank (7) and the sewage tank (8). The cleaning robot also includes a PCB assembly (11), which is housed in the first isolation cavity and fixed to the support column (10) located on the front side of the cleaning robot. The opening of the first isolation chamber faces the front of the cleaning robot.

4. The cleaning robot according to claim 1, characterized in that, The clean water tank (7) is provided with a second isolation chamber at the rear side. The cleaning robot also includes a battery pack assembly (12), which is housed in the second isolation chamber and slidably connected to the chassis (2). The opening of the second isolation chamber faces the rear of the cleaning robot.

5. The cleaning robot according to claim 4, characterized in that, The sewage tank self-cleaning system also includes a self-cleaning pump (13), which is installed on the self-cleaning pipeline (33); The self-cleaning pump (13) and part of the self-cleaning pipeline (33) are located at the rear of the cleaning robot and are isolated from the battery pack assembly (12) by a water baffle (14).

6. The cleaning robot according to claim 1, characterized in that, An isolation skirt (15) for dry and wet separation is also provided between the dust collection box (6) and the floor washing assembly (4).

7. The cleaning robot according to claim 1, characterized in that, The cleaning robot also includes a blower (16) and an air inlet pipe (17). The blower (16) is connected to the sewage tank (8) through the air inlet pipe (17) to create a negative pressure in the sewage tank (8) so that the sewage adsorbed by the squeegee assembly (5) enters the sewage tank (8) through the suction pipe (26).

8. The cleaning robot according to claim 7, characterized in that, The cleaning robot also includes a filter basket assembly (18), the suction pipe (26) is connected to the filter basket assembly (18), and a HEPA filter assembly (19) is provided at the connection between the air inlet pipe (17) and the sewage tank (8).

9. The cleaning robot according to claim 8, characterized in that, The cleaning robot also includes a cleaning liquid tank (20) and a mixing liquid tank (21). The cleaning liquid tank (20) is used to hold cleaning liquid. The clean water tank (7) and the cleaning liquid tank (20) are respectively connected to the mixing liquid tank (21) through pipelines. The mixing liquid tank (21) is located at the bottom of the clean water tank (7). The mixing liquid outlet of the mixing liquid tank (21) is connected to the floor cleaning assembly (4).

10. The cleaning robot according to claim 9, characterized in that, The top of the sewage tank (8) is provided with a manual water inlet, which is sealed by a water inlet cover (22); The filter basket assembly (18), the HEPA tank assembly (19), the cleaning liquid box (20), and the water filling cap (22) together cover and seal the top opening of the wastewater tank (8).

11. The cleaning robot according to claim 1, characterized in that, The cleaning robot also includes: An automatic sewage discharge assembly (23) is connected to the sewage outlet of the sewage tank (8) and a manual sewage discharge pipe (30) via a three-way pipe (31); An automatic water inlet (24) is connected to the clean water tank (7) via a water inlet pipe (27).

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