Carriage cleaning device for unmanned campus serving car

Abstract

The utility model discloses an unmanned campus serving car carriage cleaning device which comprises a cleaning device body installed on an unmanned serving car, the cleaning device body comprises a cleaning assembly, and the cleaning assembly comprises a spray head, a water tank and a booster pump; the drainage assembly comprises a water receiving frame and a plurality of storage plates, an operator flushes the storage plates through the spray heads, liquid obtained after flushing is discharged through the drainage assembly, the air drying assembly is arranged to blow residual sewage on the storage plates to the drainage assembly and discharge the residual sewage, and cleanliness and dryness of the storage plates are guaranteed; the influence of soup, grease and sewage residues on subsequent food placement is prevented.

Description

Technical Field

[0001] This utility model relates to the field of food delivery vehicle cleaning, specifically to a cleaning device for the interior of an unmanned campus food delivery vehicle. Background Technology

[0002] Driverless food delivery vehicles are intelligent vehicles that use autonomous driving technology to deliver food, and are typically used in schools, communities, industrial parks, or commercial parks.

[0003] The driverless delivery vehicle uses multiple sensors, such as LiDAR, cameras, millimeter-wave radar, and ultrasonic sensors, to perceive the surrounding environment in real time, providing data support for vehicle decision-making and control. Combined with satellite positioning technologies such as the Global Positioning System (GPS) and BeiDou Navigation Satellite System, along with inertial navigation systems (INS) and high-precision map matching technology, it accurately determines the vehicle's position and direction of travel on the map, ensuring that the vehicle can travel accurately along the predetermined route. With the help of an intelligent control system, it can start and stop, drive normally, turn, accelerate and decelerate, and avoid obstacles within the delivery range.

[0004] The use of driverless food delivery vehicles on campus reduces the labor costs required for manual delivery, while optimizing delivery routes and times, improving delivery efficiency, and reducing operating costs.

[0005] It can operate 24 / 7 without interruption, unaffected by fatigue or emotional factors, and can quickly and accurately deliver meals to their destinations according to preset routes, shortening delivery time. Our school has used driverless delivery vehicles to deliver meals over 200,000 times in the past two years, primarily serving students and faculty. Students can order meals via a mobile app from their dormitories or classrooms, and the driverless delivery vehicles can quickly transport meals from the cafeteria or off-campus restaurants to designated locations, making it convenient for students to eat, reducing traffic congestion on campus, and improving delivery efficiency.

[0006] However, during the use of driverless food delivery vehicles, situations may arise where students are leaving get out of class or other vehicles appear, requiring the delivery vehicles to make timely swerving maneuvers. This braking and swerving can cause spillage of soup or grease from the food, polluting the vehicle's interior. This spillage can then contaminate newly added food during subsequent storage, and if not cleaned regularly, food residue can lead to spoilage and food safety issues. Currently, cleaning is done manually by wiping the interior walls and shelves, without a drainage system, making the process time-consuming and inefficient.

[0007] Currently, a search reveals that Chinese utility model patent CN209003119U discloses a novel food delivery cart, comprising: a cart body, a cart compartment, a top rotating connecting shaft, a rotating placement rack, a heating water tank, a heater, a bottom rotating bracket, a food placement compartment, a heating compartment, a steam duct, a connecting branch pipe, a compartment cover, a rinsing rack, a rinsing nozzle, a connecting pipe, a water supply connector, and a cart door. While this patent enables rinsing of the food placement compartment, it still suffers from the following technical drawbacks:

[0008] On the one hand, there is no drying device, and after rinsing, there will be liquid residue on the food storage compartment, which will affect the subsequent placement of meals and easily wet the tableware and packaging;

[0009] On the other hand, the lack of a drainage system means that the liquid after rinsing cannot be effectively drained, resulting in a damp environment inside the carriage and the growth of bacteria.

[0010] In view of the above-mentioned shortcomings and defects, such as the lack of air drying and drainage mechanisms, the key to solving the above technical problems lies in developing a more practical and efficient unmanned campus food delivery vehicle cleaning device. Summary of the Invention

[0011] In view of the many defects and deficiencies in the above-mentioned background technology, this utility model has made improvements and innovations, aiming to provide an unmanned campus food delivery vehicle compartment cleaning device. By setting the nozzle above the shelf, the device washes the shelf at an angle downwards. Due to the flat nozzle design, the sprayed water is fan-shaped to wash the shelf, achieving a better washing coverage area.

[0012] Another objective of this invention is to install drying components on both sides of the nozzle and use the right-angled triangular structure of the fixing frame to allow the high-pressure fan to blow air obliquely downwards onto the shelf, blowing the rinsed wastewater to the filter tank and discharging it downwards, thus preventing residual wastewater from contaminating the food placed on the shelf.

[0013] Another objective of this invention is to prevent water accumulation and insufficient drainage by setting the horizontal lines at both ends of the shelf to form an angle of 0.3°, so that the sewage flows to one side of the filter tank.

[0014] To solve the above problems and achieve the above-mentioned objectives, this utility model provides a driverless campus food delivery vehicle cleaning device, which is implemented through the following design structure and the following technical solution:

[0015] A cleaning device for the interior of an unmanned campus food delivery vehicle includes a cleaning device body installed on the unmanned food delivery vehicle, the cleaning device body comprising:

[0016] The cleaning assembly includes nozzles, a water tank, and a booster pump. Several nozzles are installed inside the vehicle compartment, above the storage panel, and are connected to the water tank and booster pump via conduits. They spray water from the rear end of the vehicle to the front end to rinse the storage panel.

[0017] The drainage assembly includes a water receiving frame and several storage plates. The storage plates are provided with a water filter trough at the front end of the vehicle. The water receiving frame is set at a preset position at the front end of the vehicle to collect the liquid falling from the water filter trough and discharge it to the outside of the vehicle through a drain pipe.

[0018] The booster pump and high-pressure fan are electrically connected to the food delivery vehicle's power supply.

[0019] Preferably, it also includes a drying assembly that works in conjunction with the nozzle. There are several drying assemblies, which are arranged on both sides of the nozzle. The assembly includes a high-pressure fan and a mounting bracket. The mounting bracket is a right-angled triangle structure. The high-pressure fan is located inside the mounting bracket, and its air outlet is located on the hypotenuse of the right-angled triangle, blowing the residual liquid on the shelf from the rear of the vehicle to the water filter at the front of the vehicle.

[0020] Preferably, the nozzle includes a first nozzle and a second nozzle;

[0021] The booster pump includes a first booster pump and a second booster pump, which are located on both sides of the water tank, and their inlet ends are connected to the water tank respectively.

[0022] The first nozzle is connected to the outlet of the first booster pump on one side of the water tank via a conduit to spray the upper shelf, while the second nozzle is connected to the outlet of the second booster pump on the other side of the water tank via a conduit to spray the lower shelf.

[0023] Preferably, the delivery vehicle includes a passenger compartment, a trunk, and doors; the nozzle is a flat-nozzle omnidirectional nozzle, with one end located inside the passenger compartment and the other end penetrating through the partition between the passenger compartment and the trunk, and connected to a booster pump and water tank located in the trunk via a conduit.

[0024] Preferably, the shelf extends upwards around its perimeter, and its cross-section has an "L" shape. The angle between the horizontal line at the rear end of the vehicle and the horizontal line at the front end of the vehicle is 0.3°, which facilitates the flow of liquid to the filter tank.

[0025] Preferably, the filter tank is an arc-shaped long groove that is lower than the shelf, and several through holes are opened in the groove so that the liquid flows downward from the through holes.

[0026] Preferably, the water receiving frame is a rectangular trough structure with a length consistent with the width of the carriage. It is set at the bottom of the lower storage plate filter trough, and a through hole is opened at one end of the bottom and connected to a drain pipe for draining liquid and balancing the pressure inside and outside the carriage.

[0027] One end of the drain pipe is connected to the water collection frame, and the other end extends from the side wall under the carriage. After being connected to the hose through the connector, the liquid is discharged into the sewage tank.

[0028] Preferably, the high-pressure fan and the booster pump are electrically connected to a switch, and the operation or stop of the high-pressure fan and the booster pump are controlled by the switch.

[0029] Preferably, the cleaning assembly further includes:

[0030] The high-pressure water gun is located in a drawer under the carriage. It is connected to the outlet of the booster pump via a conduit to a three-way valve. It is used to manually wash the interior of the carriage and the doors.

[0031] Preferably, a sealing strip is provided between the car door and the car body to prevent liquid from splashing out from the car door during the cleaning process.

[0032] The working principle is as follows: During the use of the unmanned campus food delivery vehicle cleaning device designed by the above-mentioned institution, there is a situation where food broth and grease are spilled and contaminate the storage plate 131. After the food is delivered, the operator closes the door 23 to seal the vehicle compartment 21. At this time, the internal and external air pressure inside the vehicle compartment 21 is balanced through the drain pipe 133. The booster pump is started to make the nozzles spray water. Since the first nozzle 111 and the second nozzle 112 are both set above the storage plate 131, and the nozzles are all flat-mouth omnidirectional nozzles, after adjusting the nozzle angle, the nozzles spray water diagonally downward from the rear end of the vehicle. After the fan-shaped water flow impacts the rear end of the storage plate 131, the water flow continues to flow towards the front end of the vehicle, rinsing the remaining soup and food residue on the storage plate 131. The water then converges to one side of the filter tank and falls into the water collection frame 132, and is finally discharged outside the vehicle compartment 21.

[0033] After rinsing, the operator turns off the booster pump and turns on the switch to start the high-pressure fan 121. The high-pressure fan 121 blows air at an angle, blowing the residual sewage on the storage board 131 from the rear end to the front end of the vehicle. Since the horizontal line at the rear end of the storage board 131 is at an angle of 0.3° to the horizontal line at the front end of the vehicle, the sewage can be guided without affecting the stability of the food placement. The sewage collects in the filter tank 1311 and falls into the filter tank 1311 of the lower storage board 131, then falls into the water collection frame 132, and is discharged out of the compartment 21 through the drain pipe 133 connected to the bottom of the water collection frame 132, thus completing the drying operation of the storage board 131.

[0034] The aforementioned driverless campus food delivery vehicle is existing technology and has been put into use. Its body 21, trunk 22, doors 23, intelligent integrated chassis, sensors, detectors, power supply and control system are all existing technologies. This utility model does not involve the improvement of the above technologies, but only the improvement of the original structure.

[0035] In summary, the beneficial effects of this utility model compared with the prior art are as follows:

[0036] 1. This utility model features a flat-mouthed omnidirectional spray nozzle located above the shelf, which causes the water flow to fan out and wash the shelf at an angle downwards, achieving a better washing effect and a larger washing area.

[0037] 2. This utility model is equipped with a drying component. The high-pressure fan blows air downwards at an angle through the fixing frame, blowing the residual sewage from the rear end of the vehicle to the front end. The sewage then falls through the water filter tank to remove excess water from the shelf, ensuring that the food will not be wetted by the residual sewage during the subsequent placement of food.

[0038] 3. Because the horizontal line between the rear end of the storage cart and the front end of the cart forms an angle of 0.3°, the water flow is better directed towards the filter tank.

[0039] 4. This utility model achieves a better water guiding and filtering effect by setting the water filter tank as an arc-shaped long groove that is lower than the shelf.

[0040] 5. This utility model provides a water collection frame below the filter tank of the lower shelf and a drain pipe at the bottom of the water collection frame to discharge sewage outside the carriage, preventing sewage from remaining inside the carriage and polluting the interior environment. Attached Figure Description

[0041] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0042] Figure 1 This is a schematic diagram of the overall structure of the food delivery cart 2 of this utility model;

[0043] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0044] Figure 3 This is a schematic diagram of the spray nozzle rinsing plate 131 of this utility model;

[0045] Figure 4 This is a schematic diagram of the structure of the first-dimensional nozzle 111 of this utility model;

[0046] Figure 5 This is a schematic diagram of the overall structure of the storage board 131 of this utility model;

[0047] Figure 6 This is a schematic diagram showing that the angle between the horizontal line at the rear end of the vehicle and the horizontal line at the front end of the vehicle is 0.3°.

[0048] Figure 7 This is a schematic diagram of the connection relationship of the cleaning component 11 of this utility model;

[0049] Figure 8 This is a schematic diagram of the usage state of Embodiment 2 of this utility model;

[0050] Figure 9 This is a schematic diagram of the usage state of Embodiment 3 of this utility model;

[0051] Figure 10 This is one of the overall structural schematic diagrams of Embodiment 4 of this utility model;

[0052] Figure 11 This is the second schematic diagram of the overall structure of Embodiment 4 of this utility model;

[0053] In the figure, the following numbers are used: 1—cleaning device body, 11—cleaning component, 12—drying component, 13—drainage component, 14—high-pressure water gun, 111—first nozzle, 112—second nozzle, 113—first booster pump, 114—second booster pump, 115—water tank, 121—high-pressure fan, 122—fixed frame, 131—storage plate, 132—water receiving frame, 133—drain pipe, 1311—water filter tank;

[0054] 2—Food delivery vehicle, 21—Carriage, 22—Trunk, 23—Door;

[0055] 3—Sewage bucket. Detailed Implementation

[0056] To make the technical means, inventive features, and achieved objectives and effects of this utility model readily understandable, the technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0057] Example 1

[0058] like Figures 1 to 7 The illustrated unmanned campus food delivery vehicle cleaning device includes a cleaning device body 1 installed on the unmanned food delivery vehicle 2. The cleaning device body 1 includes:

[0059] The cleaning assembly 11 includes a nozzle, a water tank 115 and a booster pump. Several nozzles are installed inside the carriage 21, above the storage board 131. They are connected to the water tank 115 and the booster pump through a conduit, and spray water from the rear end of the vehicle to the front end to rinse the storage board 131.

[0060] The drainage assembly 13 includes a water receiving frame 132 and several storage plates 131. The storage plates 131 are provided with a water filter 1311 at the front end of the vehicle. The water receiving frame 132 is set at a preset position at the front end of the vehicle to collect the liquid falling from the water filter 1311 and discharge it to the outside of the vehicle compartment 21 through the drain pipe 133.

[0061] The booster pump and high-pressure fan 121 are electrically connected to the food delivery vehicle 2.

[0062] Before using the above-described unmanned campus food delivery vehicle cleaning device, the operator places the first booster pump 113, the second booster pump 114, and the water tank 115 in the trunk 22. A conduit is then used to connect the water tank 115 to the inlet of the first booster pump 113 and the inlet of the second booster pump 114. Figure 7 As shown, a hole is made in the baffle between the trunk 22 and the cargo compartment 21, and a first nozzle 111 and a second nozzle 112 are installed. The first nozzle 111 is connected to the water outlet of the first booster pump 113 using a conduit, and the second nozzle 112 is connected to the water outlet of the second booster pump 114. After adjusting the height of the storage plate 131, the upper and lower storage plates 131 are installed. One end of the water filter trough 1311 of the storage plate 131 is located at the front end of the vehicle. At this time, the upper storage plate 131 is located below the first nozzle 111, and the lower storage plate 131 is located below the second nozzle 112. The high-pressure fan 121 blows air obliquely downwards towards the rear end of the storage plate 131. The water collection frame 132 is placed below the water filter trough 1311 at the front end of the lower storage plate 131. The water collection frame 132 is connected to the drain pipe 133 so that sewage can flow out from the drain pipe 133.

[0063] During use, after the operator discovers that the cargo compartment 21 is soiled, they close the side door 23 to prevent liquid from splashing out during cleaning, open the trunk 22, check the water level in the water tank 115 to ensure sufficient water, adjust the first nozzle 111 and the second nozzle 112 so that the spray point is located near the rear of the vehicle on the storage panel 131, and start the first booster pump 113 and the second booster pump 114. The booster pumps pressurize the water in the water tank 115 and spray it out from the nozzles. Due to the flat nozzle design, such as... Figure 4 As shown, the sprayed water forms a fan shape to wash the storage panel 131. The water flow impacts the storage panel 131 from the parking space end, and the remaining water flows towards the front end of the vehicle. Figure 3 As shown, the soup or food residue remaining on the shelf 131 is rinsed into the filter tank 1311. The wastewater from the upper shelf 131 flows down from the filter tank 1311 to the lower shelf 131. The wastewater collected at the lower shelf 131 continues to flow down into the water collection frame 132, and then is discharged from the carriage 21 through the drain pipe 133.

[0064] Example 2

[0065] This embodiment 2 is the same as embodiment 1, except that, as Figure 3 As shown, it also includes a drying assembly 12 that works in conjunction with it. There are several drying assemblies 12, which are set on both sides of the nozzle. They include a high-pressure fan 121 and a mounting bracket 122. The mounting bracket 122 has a right-angled triangular structure. The high-pressure fan 121 is set inside the mounting bracket 122, and its air outlet is opened on the hypotenuse of the right-angled triangle, blowing the residual liquid on the shelf 131 from the rear end of the vehicle to the water filter 1311 at the front end of the vehicle.

[0066] In this utility model, the operator installs the high-pressure fan 121 into the fixing frame 122 to assemble it into a drying assembly 12, and then installs the drying assembly 12 onto both sides of the first nozzle 111 and the second nozzle 112, as follows. Figure 3 As shown, the high-pressure fan 121 is located at the slant side of the mounting bracket 122 at this time. A wire is used to electrically connect the high-pressure fan 121 and the booster pump to the power supply of the food delivery cart 2.

[0067] After the rinsing operation is completed, the operator turns off the first booster pump 113 and the second booster pump 114, and turns on the switch to start the high-pressure fan 121. Because the high-pressure fan 121 is located on both sides of the first nozzle 111 and the second nozzle 112, and is situated on the hypotenuse of the right-angled triangle of the mounting bracket 122, the airflow blows diagonally downwards to the rear end of the storage plate 131. After the airflow reaches the storage plate 131, it blows the remaining wastewater to the front end of the vehicle. Figure 8 As shown, the design of the storage plate 131 with an angle of 0.3° between the horizontal line at the rear end of the vehicle and the horizontal line at the front end allows the water flow to be better directed to the water filter tank 1311, and finally flow into the water receiving frame 132, and then be discharged out of the carriage 21 through the drain pipe 133 connected to one end of the water receiving frame 132.

[0068] Finally, turn off the switch and stop the high-pressure fan 121. The operator should then manually clean the water filter tank 1311 and wait for the next meal delivery cleaning operation.

[0069] Example 3

[0070] This embodiment 3 is the same as embodiment 1 and embodiment 2, except that, as Figure 9 As shown, one end of the drain pipe 133 is connected to the water receiving frame 132, and the other end is equipped with a connector. After connecting the hose through the connector, the liquid is discharged into the sewage tank 3.

[0071] In this utility model, the length is increased by connecting the hose through the drain pipe 133, and the hose is placed in the sewage tank 3 to prevent sewage discharge from polluting the vehicle body and the ground environment, and to prevent splashing caused by sewage contact with the ground during the discharge process, thus better protecting the environmental hygiene of the operating site.

[0072] Example 4

[0073] This embodiment 4 is the same as embodiments 1 to 3, except that, as Figure 10 As shown, the cleaning assembly 11 also includes a high-pressure water gun 14, which is placed in a drawer located under the carriage 21. The high-pressure water gun 14 is connected to the outlet of a booster pump via a conduit to a three-way valve, and is used to manually rinse the interior of the carriage 21 and the doors 23.

[0074] In this utility model, the operator manually washes the interior of the carriage 21 and the inner wall of the door 23 using a high-pressure water gun 14. The high-pressure water gun 14 is connected to a three-way valve through a hose. After adjusting the three-way valve, the high-pressure water gun 14 and the booster pump are connected. The nozzle is closed, the booster pump is started, and the high-pressure water gun 14 is used to wash the inner wall of the carriage 21 and the door 23. After washing, the door 23 is closed, and the water is drained by starting the air drying assembly 12.

[0075] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A cleaning device for the interior of an unmanned campus food delivery vehicle, comprising a cleaning device body (1) installed on an unmanned food delivery vehicle (2), characterized in that, The main body (1) of the cleaning device includes: The cleaning assembly (11) includes a nozzle, a water tank (115) and a booster pump. Several nozzles are installed inside the carriage (21) and located above the storage board (131). The water tank (115) and the booster pump are connected through a conduit to spray water from the rear end of the vehicle to the front end to rinse the storage board (131). The drainage assembly (13) includes a water receiving frame (132) and several storage plates (131). The storage plates (131) are provided with a water filter tank (1311) at the front end of the vehicle. The water receiving frame (132) is set at a preset position at the front end of the vehicle to collect the liquid falling from the water filter tank (1311) and discharge it to the outside of the vehicle compartment (21) through the drain pipe (133). The booster pump and high-pressure fan (121) are electrically connected to the food delivery vehicle (2).

2. The unmanned campus food delivery vehicle cleaning device according to claim 1, characterized in that, It also includes a drying assembly (12) that works together with it. There are several drying assemblies (12) and they are arranged on both sides of the nozzle. The assembly includes a high-pressure fan (121) and a fixing frame (122). The fixing frame (122) is a right-angled triangle structure. The high-pressure fan (121) is located inside the fixing frame (122) and its air outlet is opened on the hypotenuse of the right-angled triangle to blow the residual liquid on the shelf (131) from the rear end of the vehicle to the water filter tank (1311) at the front end of the vehicle.

3. The unmanned campus food delivery vehicle cleaning device according to claim 1, characterized in that, The nozzle includes a first nozzle (111) and a second nozzle (112); The booster pump includes a first booster pump (113) and a second booster pump (114), which are located on both sides of the water tank (115), and their inlet ends are connected to the water tank (115). The first nozzle (111) is connected to the outlet of the first booster pump (113) on one side of the water tank (115) via a conduit to spray the upper shelf (131), and the second nozzle (112) is connected to the outlet of the second booster pump (114) on the other side of the water tank (115) via a conduit to spray the lower shelf (131).

4. The unmanned campus food delivery vehicle cleaning device according to claim 1, characterized in that, The delivery vehicle (2) includes a carriage (21), a trunk (22) and a door (23); the nozzle is a flat-mouth omnidirectional nozzle, with one end located inside the carriage (21) and the other end passing through the partition between the carriage (21) and the trunk (22), and connected to the booster pump and water tank (115) located in the trunk (22) through a conduit.

5. A driverless campus food delivery vehicle cleaning device according to claim 2, characterized in that, The shelf (131) extends upward around its perimeter and has an "L" shaped cross-section. The angle between the horizontal line at the rear end of the vehicle and the horizontal line at the front end of the vehicle is 0.3°, which facilitates the flow of liquid to the filter tank (1311).

6. The unmanned campus food delivery vehicle cleaning device according to claim 5, characterized in that, The filter tank (1311) is an arc-shaped long groove that is lower than the shelf (131). Several through holes are opened in the groove so that the liquid can flow downward from the through holes.

7. The unmanned campus food delivery vehicle cleaning device according to claim 1, characterized in that, The water receiving frame (132) is a rectangular groove structure with a length consistent with the width of the carriage (21). It is set at the bottom of the filter groove (1311) of the lower shelf (131). One end of the bottom has a through hole and is connected to a drain pipe (133) to drain the liquid and balance the pressure inside and outside the carriage (21). One end of the drain pipe (133) is connected to the water receiving frame (132), and the other end passes through the side wall below the carriage (21). After connecting to the hose through the connector, the liquid is discharged into the sewage tank (3).

8. The unmanned campus food delivery vehicle cleaning device according to claim 1, characterized in that, The high-pressure fan (121) and the booster pump are electrically connected to the switch, and the operation or stop of the high-pressure fan (121) and the booster pump are controlled by the switch respectively.

9. A driverless campus food delivery vehicle cleaning device according to claim 1, characterized in that, The cleaning assembly (11) further includes: High-pressure water gun (14) is placed in a drawer located under the carriage (21). It is connected to the outlet of the booster pump via a three-way valve and is used to manually wash the interior of the carriage (21) and the doors (23).

10. A driverless campus food delivery vehicle cleaning device according to claim 4, characterized in that, A sealing strip is provided between the door (23) and the carriage (21) to prevent liquid from splashing out from the door (23) during the cleaning process.

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