Automatic navigation unmanned floor scrubber and dryer

Abstract

The present invention discloses an automatic navigation unmanned floor scrubber and dryer, which includes a chassis, a power wheel, a first motor provided on the power wheel shaft core, a universal wheel provided on the chassis behind the power wheel, a battery provided on the chassis and connected to the first motor, a circuit board provided on the battery, an automatic water sprinkling and cleaning device provided on the front of the chassis, an automatic sewage and dust recovery device provided on the rear of the chassis, and an automatic sewage and dust recovery device provided on the automatic sewage and dust recovery device, ultrasonic probes for sensing surrounding obstacles are provided on both sides of the front end of the automatic water sprinkling and cleaning device and the rear end of the automatic sewage and dust recovery device, a laser scanner for sensing surrounding obstacles is provided on the front end of the automatic water sprinkling and cleaning device, and a control screen is provided on the automatic sewage and dust recovery device. The present invention has the effects of intelligent water addition, cleaning and sewage discharge, self-charging and obstacle avoidance, and avoiding wheel jams and voice prompts.

Description

Technical Field

[0001] The invention relates to the field of floor cleaning equipment, and in particular to an automatic navigation unmanned floor scrubber and dryer for floor cleaning. Background Art

[0002] With the rapid development of my country's economy, there are more and more high-rise buildings, such as large apartments, office buildings, hotels, hospitals, shopping malls, etc. Due to the large flow of people, the floor is easy to get dirty and needs to be cleaned frequently. However, the floor cleaning machines on the market can only scrub the floor, and there are water stains on the floor after scrubbing, which makes the floor more slippery. Places with large flow of people are prone to slipping, and the bottom surface is wet, so the floor is more likely to get dirty during the cleaning process. In addition, the current cleaning machine is mainly operated by manual servo, that is, the cleaning machine needs to be pushed to clean the floor, including cleaning, adding water and sewage discharge, which requires manual cooperation. Not only is the degree of automation poor, but also wastes labor costs. Summary of the invention

[0003] In view of the above problems, the object of the present invention is to provide an automatic navigation unmanned floor scrubber and dryer that can intelligently add water, clean and drain, charge itself, avoid obstacles, and avoid wheel jams and voice prompts.

[0004] To achieve the above-mentioned purpose, the present invention provides an automatic navigation unmanned floor scrubber and dryer, which includes a chassis, power wheels respectively provided on both sides of the chassis, a first motor provided on the power wheel shaft core, a universal wheel provided on the chassis behind the power wheel, a battery connected to the first motor provided on the chassis, a circuit board provided on the battery, an automatic water sprinkling and cleaning device provided on the front of the chassis, an automatic sewage and dust recovery device provided on the rear of the chassis, and an automatic sewage and dust recovery device provided on the automatic sewage and dust recovery device, ultrasonic probes for sensing surrounding obstacles are respectively provided on both sides of the front end of the automatic water sprinkling and cleaning device and the rear end of the automatic sewage and dust recovery device, a laser scanner for sensing surrounding obstacles is provided on the front end of the automatic water sprinkling and cleaning device, and a control screen is provided on the automatic sewage and dust recovery device. The automatic sewage and dust recovery device, the automatic sewage and dust recovery device, the ultrasonic probe and the laser scanner, and the control screen are respectively connected to the circuit board.

[0005] In some embodiments, the automatic water sprinkling cleaning device includes a first bracket extending to the front end on the chassis, a second motor on the first bracket, a middle disc brush connected to the second motor below the first bracket, an outer ring brush connected to the first bracket covered on the periphery of the middle disc brush, a clean water tank on the chassis on one side of the second motor, a first arc-shaped shell surrounding the outside of the clean water tank, a clean water inlet extending to the outside of the first arc-shaped shell on the top of the clean water tank, a clean water outlet elbow connected to the clean water tank and extending to the top of the middle disc brush on the bottom of the clean water tank, and a second arc-shaped shell surrounding the second motor below the first arc-shaped shell; the first arc-shaped shell and the second arc-shaped shell are spliced ​​into a whole. An electronic valve is provided on the clean water outlet elbow. The electronic valve and the second motor are respectively connected to the circuit board.

[0006] In some embodiments, a protective shell covering the middle disc brush and the outer ring brush is disposed below the first bracket.

[0007] In some embodiments, the automatic sewage dust recovery device includes a second bracket extending to the rear end provided on the chassis, an arc bracket provided on the end of the second bracket, a first elastic scraper provided on the arc inner side of the arc bracket, a second elastic scraper provided on the arc outer side of the arc bracket, an arc groove for collecting sewage dust formed between the first elastic scraper and the second elastic scraper and the arc bracket, a sewage suction hole communicating with the arc groove provided on the arc bracket, a sewage collecting tank provided on the battery above the sewage suction hole, a sewage cleaning port provided on the sewage collecting tank, a water suction pipe communicating with the sewage suction hole provided on the bottom of the sewage collecting tank, and a third motor provided on the sewage collecting tank to suck the sewage dust in the arc groove from the sewage suction hole and collect it in the sewage collecting tank through the water suction pipe. A third arc shell spliced ​​into a whole with the first arc shell and the second arc shell is provided at the sewage collecting tank. The third motor is connected to the circuit board. Therefore, when the sewage collection tank is full of recovered sewage, it will automatically alarm, stop working, and return to the designated location for sewage discharge. The automatic sewage dust recovery device has an automatic cleaning function. After the sewage is discharged, the automatic sewage dust recovery device will automatically rinse with clean water. After the cleaning is completed, it will continue to work along the original route.

[0008] In some embodiments, a sealing cover is provided on the third arc-shaped housing at the location of the sewage cleaning outlet.

[0009] In some embodiments, the automatic sewage discharge device includes a fourth motor provided on the second arc-shaped housing, an L-shaped support rod provided on the shaft core of the fourth motor, an L-shaped sewage discharge pipe provided on the outer side of the L-shaped support rod, a sewage discharge port provided at the bottom of the sewage collecting tank on one side of the L-shaped sewage discharge pipe, and a connecting hose provided on the sewage discharge port with one end connected to the sewage discharge port and the other end connected to the L-shaped sewage discharge pipe. The fourth motor is connected to the circuit board.

[0010] The beneficial effect of the present invention is that it has the effect of manual and automatic cleaning. Specifically as follows: (1) After the automatic navigation unmanned driving scrubber and dryer is started, it automatically moves along a pre-designed route. During the movement, the automatic water sprinkling and cleaning device automatically releases water while using the middle disc brush and the outer ring brush to scrub the ground. At the same time, the sewage and dust collected in the arc groove of the automatic sewage and dust recovery device are sucked into the sewage water collection tank through the water suction pipe, thereby achieving the purpose of automatic water discharge, cleaning and drying. In addition, ultrasonic probes for sensing surrounding obstacles are respectively provided on both sides of the front end of the automatic water sprinkling and cleaning device and the rear end of the automatic sewage and dust recovery device, and a laser scanner for sensing surrounding obstacles is provided on the front end of the automatic water sprinkling and cleaning device, which can ensure that when the automatic navigation unmanned driving scrubber and dryer automatically moves along the route, if it turns, the speed ratio of the two power wheels is adjusted by the first motors on both sides to achieve the purpose of turning. If the ultrasonic probe and laser scanner detect an obstacle ahead during the journey, the automatic navigation unmanned driving scrubber and dryer will wait for a few seconds on the spot and then turn to avoid the obstacle and continue to complete the journey. If the road is narrow, it will wait for the person or obstacle to move away and then continue to complete the journey; if the person or obstacle remains still, the alarm will be triggered and the machine will stop working after waiting for more than 5 minutes. (2) When the automatic navigation unmanned driving scrubber and dryer completes the entire journey according to the route and returns to the starting point, the fourth motor in the rear automatic sewage discharge device will be used to rotate the L-shaped support rod to rotate the L-shaped sewage pipe fixed on the L-shaped support rod downward 180 degrees for sewage discharge. Since the sewage outlet is provided with a connecting hose with one end connected to the sewage outlet and the other end connected to the L-shaped sewage pipe, it will not be limited during the rotation process. (3) When the automatic navigation unmanned driving scrubber and dryer returns to the starting point, it can replenish water in the clean water tank and charge the power supply. (4) Floating induction balls are provided in the clean water tank and the sewage water collection tank. The floating induction ball in the clean water tank is used to check whether the water volume meets the water volume consumed in a trip, and the floating induction ball in the sewage water collection tank is used to check whether the water volume exceeds the critical water level of the water tank. In summary, the automatic navigation unmanned floor scrubber and dryer can automatically fill clean water at a fixed point, and automatically stop when the clean water is filled to a certain level. During operation, when the clean water is used up, there is an automatic alarm, and the work stops, and the machine returns to the designated location to automatically fill water. After the operation is completed, the machine continues to work along the original route. There can be an automatic charging function. When the power is low to a specified amount, the machine automatically returns to the designated point to charge. After the work is completed, the machine can also automatically return to the designated point to charge. The scheduled cleaning time can be set without manual operation. It has an automatic obstacle avoidance function. When the space is small and the obstacle cannot be avoided, the machine can stop and alarm. There is also a voice broadcast prompt function. The power wheel has an automatic adjustment mechanism up and down. When the machine passes through an uneven road, it can automatically adjust without slipping or getting stuck. The present invention realizes the effects of intelligent water adding, cleaning, self-charging and obstacle avoidance, and avoidance of wheel jamming and voice prompting. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the present invention;

[0012] Figure 2 for Figure 1 A structural schematic diagram of another viewing angle 1 is shown;

[0013] Figure 3 for Figure 1 A structural schematic diagram of another viewing angle 2 is shown;

[0014] Figure 4 for Figure 1 A structural schematic diagram of another viewing angle 3 is shown;

[0015] Figure 5 It is a schematic diagram of the internal structure of the present invention;

[0016] Figure 6 for Figure 5 A structural schematic diagram of another viewing angle 1 is shown;

[0017] Figure 7 for Figure 5 A structural schematic diagram of another viewing angle 2 is shown;

[0018] Figure 8 for Figure 5 A structural schematic diagram of another viewing angle 3 is shown;

[0019] Fig. 9 It is a schematic diagram of the explosion structure of the present invention. DETAILED DESCRIPTION

[0020] The invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] like Figure 1-9As shown, the automatic navigation unmanned driving scrubber and dryer comprises a chassis 01, power wheels 02 respectively provided on both sides of the chassis 01, a first motor 03 provided on the shaft core of the power wheel 02, a universal wheel 04 provided on the chassis 01 behind the power wheel 02, a battery 05 connected to the first motor 03 provided on the chassis 01, a circuit board 06 provided on the battery 05, an automatic water sprinkling and cleaning device 07 provided on the front part of the chassis 01, an automatic sewage and dust recovery device 08 provided on the rear part of the chassis 01 and an automatic sewage discharge device 09 provided on the automatic sewage and dust recovery device 08, ultrasonic probes 10 for sensing surrounding obstacles are respectively provided on both sides of the front end of the automatic water sprinkling and cleaning device 07 and the rear end of the automatic sewage and dust recovery device 08, a laser scanner 11 for sensing surrounding obstacles is provided on the front end of the automatic water sprinkling and cleaning device 07, and a control screen 10 is provided on the automatic sewage and dust recovery device 08. The automatic sewage dust recovery device 08 , the automatic sewage discharge device 09 , the ultrasonic probe 10 , the laser scanner 11 , and the control screen 10 are respectively connected to the circuit board 06 .

[0022] The automatic water sprinkling cleaning device 07 includes a first bracket 71 extending to the front end provided on the chassis 01, a second motor 72 provided on the first bracket 71, a middle disc brush 73 connected to the second motor 72 provided below the first bracket 71, an outer ring brush 74 connected to the first bracket 71 covered on the periphery of the middle disc brush 73, a clean water tank 75 provided on the chassis 01 on one side of the second motor 72, a first arc-shaped housing 76 surrounding the outer side of the clean water tank 75, a clean water inlet 77 extending to the outside of the first arc-shaped housing 76 provided on the top of the clean water tank 75, a clean water outlet elbow 78 connected to the clean water tank 75 and extending to the top of the middle disc brush 73 provided on the bottom of the clean water tank 75, and a second arc-shaped housing 79 surrounding the second motor 72 provided below the first arc-shaped housing 76. The first arc-shaped housing 76 and the second arc-shaped housing 79 are spliced ​​into a whole. An electronic valve is provided on the clean water outlet elbow 78. The electronic valve and the second motor 72 are connected to the circuit board 06 respectively.

[0023] A protective shell 710 is disposed below the first bracket 71 to cover the middle disc brush 73 and the outer ring brush 74 .

[0024] The automatic sewage dust recovery device 08 includes a second bracket 81 extending to the rear end provided on the chassis 01, an arc-shaped bracket 82 provided on the end of the second bracket 81, a first elastic scraper 83 provided on the arc inner side of the arc-shaped bracket 82, a second elastic scraper 84 provided on the arc outer side of the arc-shaped bracket 82, an arc-shaped groove 85 for collecting sewage dust formed between the first elastic scraper 83 and the second elastic scraper 84 and the arc-shaped bracket 82, a sewage suction hole 86 communicating with the arc-shaped groove 85 provided on the arc-shaped bracket 82, a sewage collecting tank 87 provided on the battery 05 above the sewage suction hole 86, a sewage cleaning port 88 provided on the sewage collecting tank 87, a water suction pipe 89 communicating with the sewage suction hole 86 provided on the bottom of the sewage collecting tank 87, and a third motor 810 provided on the sewage collecting tank 87 for sucking the sewage dust in the arc-shaped groove 85 from the sewage suction hole 86 and collecting it into the sewage collecting tank 87 through the water suction pipe 89. The sewage collecting tank 87 is provided with a third arc-shaped housing 811 integrally connected with the first arc-shaped housing 76 and the second arc-shaped housing 79. The third motor 810 is connected with the circuit board 06. A sealing cover 812 is provided on the third arc-shaped housing 811 at the sewage cleaning port 88.

[0025] The automatic sewage discharge device 09 includes a fourth motor 91 provided on the second arc-shaped housing 79, an L-shaped support rod 92 provided on the shaft core of the fourth motor 91, an L-shaped sewage discharge pipe 93 provided on the outer side of the L-shaped support rod 92, a sewage discharge port 94 provided at the bottom of the sewage collecting tank 87 on one side of the L-shaped sewage discharge pipe 93, and a connecting hose provided on the sewage discharge port 94 with one end connected to the sewage discharge port 94 and the other end connected to the L-shaped sewage discharge pipe 93. The fourth motor 91 is connected to the circuit board 06.

[0026] When in use, after the automatic navigation unmanned driving scrubber and dryer is started, it automatically moves along a pre-designed route. During the movement, the automatic water sprinkling and cleaning device 07 automatically releases water while using the middle disc brush 73 and the outer ring brush 74 to scrub the ground. At the same time, the sewage and dust collected in the arc groove 85 of the automatic sewage and dust recovery device 08 are sucked into the sewage water collection tank 87 through the water suction pipe 89, thus achieving the purpose of automatic water discharge, cleaning and drying. In addition, ultrasonic probes 10 for sensing surrounding obstacles are respectively provided on both sides of the front end of the automatic water sprinkling and cleaning device 07 and the rear end of the automatic sewage and dust recovery device 08, and a laser scanner 11 for sensing surrounding obstacles is provided on the front end of the automatic water sprinkling and cleaning device 07, which can ensure that when the automatic navigation unmanned driving scrubber and dryer automatically moves along the route, if it turns, the first motors 03 on both sides respectively adjust the speed ratio of the two power wheels 02 to achieve the purpose of turning. If the ultrasonic probe 10 and the laser scanner 11 detect an obstacle in front during the walking process, under the condition of wide road surface, the automatic navigation unmanned driving scrubber and dryer will wait on the spot for a few seconds before turning to avoid it and continue to complete the journey. If the road surface is narrow, it will wait on the spot, wait for the person or obstacle to move away, and then continue to complete the journey; if the person or obstacle remains still, the alarm will stop working after waiting for more than 5 minutes. When the automatic navigation unmanned driving scrubber and dryer completes the entire journey according to the route and returns to the origin, the fourth motor 91 in the rear automatic sewage discharge device 09 is used to rotate the L-shaped support rod 92, and the L-shaped sewage pipe 93 fixed on the L-shaped support rod 92 is rotated downward 180 degrees for sewage discharge. Since the sewage outlet 94 is provided with a connecting hose with one end connected to the sewage outlet 94 and the other end connected to the L-shaped sewage pipe 93, it will not be limited during the rotation process. When the automatic navigation unmanned driving scrubber and dryer returns to the origin, the clean water tank 75 can be replenished with water, and the power supply can also be charged. Floating sensing balls are provided in the clean water tank 75 and the sewage collecting tank 87. The floating sensing ball in the clean water tank 75 is used to check whether the water volume meets the water consumption of one stroke, and the floating sensing ball in the sewage collecting tank 87 is used to check whether the water volume exceeds the critical water level of the water tank.

[0027] Among them, the automatic navigation system is composed of the EAI lidar rangefinder G4 + ultrasonic waves on the four corners, achieving a ranging radius of 16 meters, a ranging frequency of 9000 times / S, and 12Hz wireless technology, which enables the robot to achieve fast and accurate mapping, while accurately capturing environmental details and tiny objects.

[0028] Map entry:

[0029] Automatic navigation system: First, the operator manually uses the cross-steering wheel (similar to the steering wheel function of a car) of the operation interface (operating system on a handheld touch screen) to drive the AGV car to follow the preset path of the designated venue and walk it once (the map of the designated venue can be read out). EAI (brand) laser radar rangefinder G4, The open space, walls, pillars, tables and other fixed objects in the venue can be regarded as obstacles and scanned into the map of the venue one by one. When the AGV car - manually operated touch screen, goes through the predetermined route, all map entry functions of the venue can be realized.

[0030] After entering the map, the AGV path is optimized

[0031] After selecting any N designated path points in the venue (i.e. the places where the AGV car passes), the AGV car will have its internal system optimized combination and arrive at each location in the optimized order (transporting the required objects to the designated N1, N2... locations). The starting point, automatic charging point, sewage discharge point, automatic water filling point, and other path points will be manually set one by one at the corresponding positions on the site map. For example: when the battery is low, the system will detect it and give feedback, activating the automatic charging function in the system. The AGV car will automatically reach the automatic charging point and charge after optimizing the path according to the map of the venue.

[0032] Automatic avoidance: When the map of the site is empty by default (on the path that can be passed), and there are additional objects, people or cartons, when the AGV passes by this place, LiDAR Rangefinder G4 It can detect obstacles on the AGV's path and will feed back to the system. The system will optimize itself and turn to avoid obstacles (just like driving a car, turning to avoid pedestrians). The AGV system inputs its data into the system itself based on its own established length, width and height. The system will match its own size to the data of the site, and then calculate the space required for the car to turn and avoid obstacles based on the data fed back by the laser radar rangefinder G4, and then perform the turning and avoidance action. When there is insufficient space around: When there is not enough space for turning, the AGV will pause and wait for pedestrians to walk away (G4 rotates 360 degrees at high speed for detection). The AGV will continue to work. Or if there is insufficient space around, the AGV will alarm and let people handle it manually.

[0033] Automatic charging function

[0034] Charging pile: On the AGV car: It consists of two brass electrodes exposed on the outside of the AGV, an insulating pad to fix the electrodes, and a cable connected to the lithium battery. Power supply (fixed on the wall at a designated location): A transformer that converts DC 220V to DC24V, two raised brass electrodes, an insulating pad to fix the brass electrodes, etc. The power supply is powered 24 hours a day to facilitate the AGV car to be charged and used at any time.

[0035] Voice alarm prompt function

[0036] The feedback signals from the system's G4 or auxiliary ultrasonic waves, or the built-in float switch, are fed back to the system, and then corresponded to the corresponding voice alarms, and then the system - speaker - voice alarm comes out.

[0037] For example:

[0038] When G4 detects pedestrians, it can give a voice prompt: the cleaning trolley is about to pass here, please avoid it. When the float switch detects that there is not enough clean water, it can give a voice prompt: there is not enough clean water, cleaning will be suspended, and clean water will be automatically added. Continue cleaning. The left and right power wheels of the power wheel group are independent. Each power wheel consists of its own fixed seat, guide column, spring, sliding block, etc., which can provide the power wheel with vertical extension. When the AGV trolley passes through an uneven road surface, the power wheels on the left and right sides are automatically adjusted by their own weight according to the flatness of the road surface to ensure the support balance of the power wheels on the left and right sides. When there is a pit on the road surface, the spring can press the power wheel out to ensure that the power wheel in the pit contacts the pit surface, thereby ensuring the overall balance of the AGV trolley and not tilting. For sewage treatment, there is a float switch in the sewage tank. When the float is installed, the minimum / maximum water level is set. When the water level in the sewage tank reaches the highest, it means that the sewage tank is full of sewage. When the water level in the sewage tank is the lowest, it means that the sewage has been discharged. The sewage switch has an electric transmission signal, which is fed back to the system through a cable. This is used to detect the water level in the sewage tank. (Similar to how a car's fuel tank detects whether there is gasoline, how much gasoline is left, etc.) The system will set the sewage discharge point in advance. When the float switch detects that the sewage is full, it will feedback the signal to the system. Based on the feedback, the system will let the AGV car walk to the sewage discharge point according to the map, and then the electric sewage discharge mechanism will lower the sewage discharge pipe, and the sewage discharge will begin. When the sewage is emptied, the float switch will rise and fall according to the water level, and feedback the signal to the system. The system will start the sewage tank cleaning mechanism, and the water pump in the cleaning mechanism will pump and spray clean water - through the nozzles fixed in advance in the sewage tank, the clean water will be sprayed on the inner wall of the sewage tank, and the entire inner wall of the sewage tank will be cleaned.

[0039] When the AGV cleaning vehicle comes to replenish water, the pre-set touch protrusion on the AGV cleaning vehicle collides with the touch faucet switch, the faucet will open, and the clean water will be transported to the water tank inlet through the extended water pipe. When the water tank is full, the float switch will feedback the signal to the system, the system drives the vehicle forward, the touch protrusion leaves the touch faucet switch, and the faucet will automatically close. The AGV system is a highly integrated control system (similar to a computer host), + external receiving device (G4, ultrasonic, switch button, etc.), + touch screen (can input voice alarms, etc.) The operating system has different interfaces and input buttons

[0040] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all belong to the protection scope of the invention.

Claims

1. Automatic navigation unmanned scrubber and dryer, characterized in that: It includes a chassis, power wheels respectively provided on both sides of the chassis, a first motor provided on the power wheel shaft core, a universal wheel provided on the chassis behind the power wheel, a battery connected to the first motor provided on the chassis, a circuit board provided on the battery, an automatic water sprinkling and cleaning device provided on the front of the chassis, an automatic sewage and dust recovery device provided on the rear of the chassis, and an automatic sewage discharge device provided on the automatic sewage and dust recovery device, ultrasonic probes for sensing surrounding obstacles are respectively provided on both sides of the front end of the automatic water sprinkling and cleaning device and the rear end of the automatic sewage and dust recovery device, a laser scanner for sensing surrounding obstacles is provided on the front end of the automatic water sprinkling and cleaning device, and a control screen is provided on the automatic sewage and dust recovery device; The automatic sewage dust recovery device, the automatic sewage discharge device, the ultrasonic probe and the laser scanner, and the control screen are respectively connected to the circuit board; The automatic water sprinkling cleaning device comprises a first bracket extending to the front end provided on the chassis, a second motor provided on the first bracket, a middle disc brush connected to the second motor provided below the first bracket, an outer ring brush connected to the first bracket covered on the periphery of the middle disc brush, a clean water tank provided on the chassis on one side of the second motor, a first arc-shaped shell surrounding the outer side of the clean water tank, a clean water inlet extending to the outside of the first arc-shaped shell provided on the top of the clean water tank, a clean water outlet elbow connected to the clean water tank and extending to the top of the middle disc brush provided on the bottom of the clean water tank, and a second arc-shaped shell surrounding the second motor provided below the first arc-shaped shell; the first arc-shaped shell and the second arc-shaped shell are spliced ​​into a whole; The purified water outlet elbow is provided with an electronic valve; The electronic valve and the second motor are respectively connected to the circuit board; The automatic sewage dust recovery device includes a second bracket extending to the rear end provided on the chassis, an arc bracket provided on the end of the second bracket, a first elastic scraper provided on the arc inner side of the arc bracket, a second elastic scraper provided on the arc outer side of the arc bracket, an arc groove for collecting sewage dust formed between the first elastic scraper and the second elastic scraper and the arc bracket, a sewage suction hole communicating with the arc groove provided on the arc bracket, a sewage collecting tank provided on the battery above the sewage suction hole, a sewage cleaning port provided on the sewage collecting tank, a water suction pipe communicating with the sewage suction hole provided on the bottom of the sewage collecting tank, and a third motor provided on the sewage collecting tank for sucking sewage dust in the arc groove from the sewage suction hole and collecting it in the sewage collecting tank through the water suction pipe; The sewage collecting tank is provided with a third arc-shaped outer shell which is spliced ​​into a whole with the first arc-shaped outer shell and the second arc-shaped outer shell; The third motor is connected to the circuit board; The automatic sewage discharge device comprises a fourth motor provided on the second arc-shaped housing, an L-shaped support rod provided on the shaft core of the fourth motor, an L-shaped sewage discharge pipe provided on the outer side of the L-shaped support rod, a sewage discharge port provided at the bottom of the sewage collecting tank on one side of the L-shaped sewage discharge pipe, and a connecting hose provided on the sewage discharge port with one end connected to the sewage discharge port and the other end connected to the L-shaped sewage discharge pipe; The fourth motor is connected to the circuit board.

2. The automatic navigation unmanned scrubber and dryer according to claim 1, characterized in that: A protective shell covering the middle disc brush and the outer ring brush is arranged below the first bracket.

3. The automatic navigation unmanned scrubber and dryer according to claim 1, characterized in that: A sealing cover is provided on the third arc-shaped housing at the position of the sewage cleaning outlet.

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