Sanitation vehicle and sweeping method
By designing water tank components and piston units in sanitation vehicles and adjusting the chamber volume, the problem of frequent discharge caused by small sewage chamber volume in traditional sanitation vehicles is solved, and higher working efficiency is achieved.
Patent Information
- Application Number
- CN202411518332.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-03-11
AI Technical Summary
The sewage chamber of traditional sanitation vehicles has small capacity, which leads to frequent discharge of sewage treatment stations, affecting work efficiency.
A sanitation vehicle is designed, adopting a water tank assembly and a piston unit to separate the hollow cavity of the water tank unit into a first chamber and a second chamber, and adjust the volume of the two chambers through the movement of the piston unit to ensure that the volume of the second chamber is large enough to store more sewage and foreign matter.
By increasing the volume of the second chamber, the dependence on the sewage treatment station is reduced, the working efficiency of the sanitation vehicle is improved, and the trouble of frequent sewage discharge is avoided.
Smart Images
Figure CN119593337A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of sanitation vehicles, and in particular to a sanitation vehicle and a cleaning method. Background Art
[0002] Sanitation vehicles can effectively remove garbage, dust and stains on the road surface and improve cleanliness by sweeping the floor with mechanically rotating sweeping brushes, flushing the road surface with high-pressure water spray systems, and sucking sewage with airflow aerodynamic principles. They have been widely used in cleaning operations in urban roads, highways, squares, airports, docks and other places. With the acceleration of urbanization and the improvement of environmental protection requirements, the demand for sanitation vehicles will continue to grow.
[0003] When a traditional sanitation vehicle is in use, the clean water in the clean water chamber is discharged, and the clean water is collected and transmitted to the sewage chamber through the cleaning component. When collecting sewage, there will be sewage and foreign matter on the road surface. After the sewage chamber is full, it needs to be driven to the sewage treatment station for discharge. The sanitation vehicle realizes the conversion of the internal volume of the sewage chamber and the clean water chamber through the deformation of the flexible variable volume cloth. After the clean water is discharged from the clean water chamber, the water level of the sewage chamber increases due to the recycled water. The variable volume cloth expands and deforms to both sides under the action of the pressure difference on both sides, converting part of the volume of the clean water chamber into the volume of the sewage chamber, realizing the volume conversion from the surface, but its volume conversion part only includes the flexible conversion part of the variable volume cloth, and the volume that can be increased in the sewage chamber is small, resulting in a small volume of the sewage chamber, and it is necessary to go to the sewage treatment station frequently for discharge, which affects work efficiency. Summary of the invention
[0004] In order to solve the problem of how to improve the working efficiency of a sanitation vehicle, the present invention provides a sanitation vehicle and a cleaning method.
[0005] In a first aspect, the present invention provides a sanitation vehicle, the sanitation vehicle comprising:
[0006] Vehicle body;
[0007] A water tank assembly, the water tank assembly comprising a water tank unit and a piston unit; the water tank unit is detachably connected to the vehicle body; the outer peripheral wall of the piston unit is slidably connected to the inner peripheral wall of the water tank unit; the piston unit divides the hollow cavity of the water tank unit into a first chamber and a second chamber; when the piston unit moves, the volume of the first chamber and the volume of the second chamber change in opposite trends; the volume of the first chamber and the volume of the second chamber change at the same rate;
[0008] A cleaning assembly, the cleaning assembly comprising a first cleaning unit and a second cleaning unit; the first cleaning unit is detachably connected to the water tank unit; the first cleaning unit is communicated with the first chamber; the second cleaning unit is detachably connected to the water tank unit; the second cleaning unit is communicated with the second chamber;
[0009] The sanitation vehicle includes a set state; the set state includes V1:V2=(3-4.5):1; wherein V1 is the volume of the first chamber, and V2 is the volume of the second chamber.
[0010] In some embodiments, the set state also includes V1:V2=(3.7-4.2):1.
[0011] In some embodiments, when the piston unit moves toward the first chamber, V0≤V1; wherein V0 is the increased volume of the second chamber.
[0012] In some embodiments, the piston unit includes a telescopic rod and a piston disc; the telescopic rod is detachably connected to the water tank unit; the telescopic rod is detachably connected to the piston disc; the outer peripheral wall of the piston disc is slidably connected to the inner peripheral wall of the water tank unit; and the piston disc is driven to move when the length of the telescopic rod changes.
[0013] In some embodiments, the telescopic rod is disposed on a side of the piston disc close to the first chamber.
[0014] In some embodiments, the water tank unit includes a box body, a movable cover, and a movable door; the box body is detachably connected to the vehicle body; the movable cover is movably connected to the box body; the movable cover is arranged at the top end of the box body; the movable door is movably connected to the box body; the outer peripheral wall of the piston unit is slidably connected to the inner peripheral wall of the box body; the piston unit divides the hollow cavity of the box body into the first chamber and the second chamber; the first cleaning unit is detachably connected to the box body; the second cleaning unit is detachably connected to the movable door; the movable cover is arranged on the side of the box body close to the first chamber; the second cleaning unit is arranged on the side of the box body close to the second chamber.
[0015] In some embodiments, the first cleaning unit includes a first lifting part and a cleaning part; the first lifting part is detachably connected to the water tank unit; the first lifting part is drivingly connected to the cleaning part; and the cleaning part is communicated with the first chamber.
[0016] In some embodiments, the second cleaning unit includes a suction cylinder, a ventilation pipe, a fan, an exhaust duct, a second lifting part, and a suction nozzle; the fan is detachably connected to the water tank unit; the exhaust duct is detachably connected to the water tank unit; one end of the ventilation pipe is connected to the second chamber, and the other end is connected to the exhaust duct; one end of the ventilation pipe is detachably connected to the water tank unit, and the other end is detachably connected to the exhaust duct; the second lifting part is detachably connected to the water tank unit; the second lifting part is drivingly connected to the suction nozzle; one end of the suction cylinder is connected to the second chamber, and the other end is connected to the suction nozzle; one end of the suction cylinder is detachably connected to the water tank unit, and the other end is detachably connected to the suction nozzle.
[0017] In some embodiments, one end of the ventilation tube is connected to the top end of the second chamber.
[0018] In a second aspect, the present invention provides a cleaning method, which is applied to any of the sanitation vehicles in the first aspect, and the cleaning method comprises:
[0019] Step S11, based on the triggering of the cleaning instruction, the first cleaning unit sprays the liquid in the first chamber onto the ground;
[0020] Step S12, based on the liquid in the first chamber being sprayed onto the ground, the second cleaning unit collects dirt on the ground into the second chamber;
[0021] Step S13: Based on the second cleaning unit collecting the dirt on the ground into the second chamber, the piston unit moves toward the first chamber.
[0022] In order to solve the problem of how to improve the working efficiency of sanitation vehicles, the present invention has the following advantages:
[0023] The sanitation vehicle may include a vehicle body, a water tank assembly, and a cleaning assembly. The piston unit may separate the hollow cavity of the water tank unit into a first chamber and a second chamber. The movement of the piston unit may ensure that when the volume of the first chamber decreases, the volume of the second chamber increases synchronously and the decrease in the volume of the first chamber is equal to the increase in the volume of the second chamber. The clean water in the first chamber is sprayed onto the ground through the first cleaning unit, and the first cleaning unit may clean the ground. The second cleaning unit may absorb the sewage and foreign matter cleaned on the ground and transmit them to the second chamber. The sanitation vehicle may include a set state. The set state may include a ratio of the volume of the first chamber to the volume of the second chamber of (3-4.5):1, indicating that when the sanitation vehicle reaches the maximum volume in the first chamber, when the piston unit moves, the volume of the first chamber and the volume of the second chamber may change in opposite trends, and the maximum volume that the first chamber can reach is smaller than the maximum volume that the second chamber can reach, thereby ensuring that the maximum volume reached by the second chamber is large enough, so that there is enough clean water to facilitate the cleaning effect while the second chamber can collect more sewage and foreign matter. When the clean water is used up, the volume of the first chamber decreases while the volume of the second chamber can increase. The maximum volume reached by the second chamber is large enough, and there is no need to frequently go to the sewage treatment station to discharge sewage, which effectively improves the working efficiency of the sanitation vehicle. This can solve the problem of how to improve the working efficiency of sanitation vehicles. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 A schematic diagram of a sanitation vehicle according to an embodiment is shown;
[0025] Figure 2 A schematic diagram of a water tank assembly for a sanitation vehicle according to an embodiment is shown;
[0026] Figure 3 A schematic diagram of a water tank assembly for a sanitation vehicle according to another embodiment is shown;
[0027] Figure 4 A flow chart of a cleaning method according to an embodiment is shown.
[0028] Figure numerals: 01 vehicle body; 02 water tank assembly; 21 water tank unit; 211 tank body; 212 movable cover; 213 movable door; 22 piston unit; 221 telescopic rod; 222 piston disc; 03 cleaning assembly; 31 first cleaning unit; 311 first lifting part; 312 cleaning part; 32 second cleaning unit; 321 suction cylinder; 322 ventilation pipe; 323 fan; 324 exhaust duct; 325 second lifting part; 326 suction nozzle. DETAILED DESCRIPTION
[0029] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present disclosure, rather than implying any limitation on the scope of the present disclosure.
[0030] As used herein, the term "including" and its variants are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "based at least in part on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment". The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal" and the like is based on the orientation or position relationship shown in the accompanying drawings. These terms are mainly for better describing the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to being used to indicate an orientation or position relationship, some of the above terms may also be used to indicate other meanings, such as the term "upper" may also be used to indicate a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to the specific circumstances. In addition, the terms "install", "set", "provided with", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.
[0031] The sanitation vehicle can discharge clean water to the ground through the clean water chamber for cleaning, and then collect and transport the sewage to the sewage chamber to achieve cleaning operations. However, since the sanitation vehicle is arranged between the sewage chamber and the clean water chamber by a flexible variable volume cloth, it expands and deforms to both sides under the action of the pressure difference on both sides of the flexible variable volume cloth, thereby realizing the conversion of the internal volume of the sewage chamber and the clean water chamber. However, its volume-convertible part only includes the flexible conversion part of the variable volume cloth, and the volume that can be increased in the sewage chamber is small, resulting in a small maximum volume that the sewage chamber can reach. It is necessary to go to the sewage treatment station frequently for discharge, which affects work efficiency. In order to solve the problem of how to improve the work efficiency of sanitation vehicles, this embodiment provides a sanitation vehicle. Figure 1 As shown, the sanitation vehicle may include: a vehicle body 01 , a water tank assembly 02 , and a cleaning assembly 03 .
[0032] The water tank assembly 02 may include a water tank unit 21 and a piston unit 22. The water tank unit 21 may be detachably connected to the vehicle body 01, so that the water tank unit 21 may be disassembled separately for installation and maintenance. The outer peripheral wall of the piston unit 22 may be slidably connected to the inner peripheral wall of the water tank unit 21, and the piston unit 22 may separate the hollow cavity of the water tank unit 21 into a first chamber and a second chamber, so that the relative size of the volume of the first chamber and the volume of the second chamber may be flexibly controlled by the sliding of the piston unit 22. The first chamber may be used to store clean water for cleaning, and the second chamber may be used to place sewage and debris. When the piston unit 22 moves, the volume of the first chamber and the volume of the second chamber may change in opposite trends. The volume of the first chamber and the volume of the second chamber may change at the same rate, and the movement of the piston unit 22 may ensure that the volume of the second chamber increases synchronously when the volume of the first chamber decreases, and the volume reduction of the first chamber is equal to the volume increase of the second chamber.
[0033] The cleaning assembly 03 may include a first cleaning unit 31 and a second cleaning unit 32. The first cleaning unit 31 may be detachably connected to the water tank unit 21, which is convenient for the disassembly and installation of the first cleaning unit 31, and can be replaced separately during maintenance. The first cleaning unit 31 may be communicated with the first chamber, which is convenient for the clean water in the first chamber to be sprayed onto the ground through the first cleaning unit 31, and the first cleaning unit 31 cleans the ground. The second cleaning unit 32 may be detachably connected to the water tank unit 21, which is convenient for the installation of the second cleaning unit 32, and the second cleaning unit 32 may be disassembled and replaced separately when maintenance is required. The second cleaning unit 32 is communicated with the second chamber, and the second cleaning unit 32 can absorb the sewage and foreign matter cleaned on the ground and transmit them to the second chamber.
[0034] The sanitation vehicle may include a set state. The set state may include a ratio of the volume V1 of the first chamber to the volume V2 of the second chamber of (3-4.5): 1, indicating that when the sanitation vehicle reaches the maximum volume state in the first chamber, when the piston unit 22 moves, the volume of the first chamber and the volume of the second chamber may change in opposite trends, and the maximum volume that the first chamber can reach is smaller than the maximum volume that the second chamber can reach, thereby ensuring that the maximum volume reached by the second chamber is large enough, so that there is enough clean water to facilitate the cleaning effect, and the second chamber can collect more sewage and foreign matter. When the clean water is used up, the volume of the first chamber decreases while the volume of the second chamber can increase. The maximum volume reached by the second chamber is large enough, and there is no need to frequently go to the sewage treatment station to discharge sewage, thereby effectively improving the working efficiency of the sanitation vehicle.
[0035] In some embodiments, the set state may also include that the ratio of the volume V1 of the first chamber to the volume V2 of the second chamber may be (3.7-4.2): 1. This indicates that the maximum volume state that the first chamber can reach is the most suitable state, which can ensure that the amount of clean water stored is large enough, and the amount of increase in the volume of the second chamber is large enough. During the operation of the sanitation vehicle, the clean water in the first chamber is sprayed onto the road surface. The volume of the first chamber decreases as the clean water decreases, while the volume of the second chamber increases. After the clean water is used up, the volume of the first chamber becomes the minimum with the movement of the piston unit 22. The space in the second chamber for placing sewage and foreign matter is large enough to reduce the number of visits to the sewage treatment station and improve the working efficiency of the sewage truck.
[0036] In some embodiments, when the piston unit 22 moves toward the first chamber, the increased volume of the second chamber may be less than or equal to the volume of the first chamber, and the volume reduction of the first chamber is equal to the volume increase of the second chamber. Figure 3 As shown, when the volume of the first chamber is reduced to 0, the increased volume of the second chamber can be equal to the volume of the first chamber. The volume of the second chamber is large enough to improve the sewage loading capacity of the sanitation vehicle and thus improve the working efficiency of the sanitation vehicle.
[0037] In some embodiments, the piston unit 22 may include a telescopic rod 221 and a piston disc 222. The telescopic rod 221 may be used to drive the piston disc 222 to move. The telescopic rod 221 may be detachably connected to the water tank unit 21, which is convenient for the disassembly and installation of the telescopic rod 221, and can be replaced separately during maintenance. The telescopic rod 221 may be detachably connected to the piston disc 222, which is convenient for the separate disassembly of the telescopic rod 221 or the piston disc 222 during maintenance, and the maintenance cost can be saved without replacing the entire unit. The outer peripheral wall of the piston disc 222 may be slidably connected to the inner peripheral wall of the water tank unit 21, and the piston disc 222 may be used to block clean water and sewage. When the length of the telescopic rod 221 changes, the piston disc 222 may be driven to move, and the relative size of the volume of the first chamber and the volume of the second chamber may be flexibly controlled by driving the piston disc 222 to move through the telescopic rod 221.
[0038] In some embodiments, the telescopic rod 221 can be set on the side of the piston disc 222 close to the first chamber. The sewage and foreign matter placed in the second chamber will cause the telescopic rod 221 to get stuck. The first chamber is filled with clean water, which makes it easy for the telescopic rod 221 to change its length freely in the clean water. There is no foreign matter in the clean water, and the telescopic rod 221 is not prone to wear when moving in the clean water, which can extend the service life of the telescopic rod 221. The volumes of the first chamber and the second chamber can be changed freely, preventing the telescopic rod 221 from getting stuck, thereby improving the working efficiency of the sewage truck.
[0039] In some embodiments, Figure 2As shown, the water tank unit 21 may include a box body 211, a movable cover 212, and a movable door 213. The box body 211 may be detachably connected to the vehicle body 01 for easy installation, and the box body 211 may contain clean water, sewage, and foreign matter. The movable cover 212 may be movably connected to the box body 211, and the movable cover 212 may be arranged at the top of the box body 211, so that clean water can be added by opening the movable cover 212, and the movable cover 212 may be closed to maintain sealing when clean water is not needed. The movable door 213 may be movably connected to the box body 211, and when the sewage truck arrives at the sewage treatment station, the sewage and foreign matter may be discharged by opening the movable door 213. The outer peripheral wall of the piston unit 22 may be slidably connected to the inner peripheral wall of the box body 211, and the piston unit 22 may separate the hollow cavity of the box body 211 into a first chamber and a second chamber, and the relative size of the volume of the first chamber and the volume of the second chamber may be flexibly controlled by sliding the piston unit 22. The first cleaning unit 31 can be detachably connected to the housing 211, which is convenient for the disassembly and installation of the first cleaning unit 31, and can be replaced separately during maintenance. The second cleaning unit 32 can be detachably connected to the movable door 213, which is convenient for the installation of the second cleaning unit 32, and the second cleaning unit 32 can be disassembled and replaced separately when maintenance is required. The movable cover 212 can be set on the side of the housing 211 close to the first chamber, which is convenient for adding clean water to the first chamber through the movable cover 212. The second cleaning unit 32 can be set on the side of the housing 211 close to the second chamber, and the second cleaning unit 32 can absorb the sewage and foreign matter cleaned on the ground and transmit them to the second chamber.
[0040] In some embodiments, the first cleaning unit 31 may include a first lifting unit 311 and a cleaning unit 312. The first lifting unit 311 may be detachably connected to the water tank unit 21 to facilitate the installation of the first lifting unit 311. The first lifting unit 311 may be drivingly connected to the cleaning unit 312 to drive the lifting of the cleaning unit 312 so that the cleaning unit 312 can maintain contact with the ground to clean the ground. The cleaning unit 312 may be connected to the first chamber, and the cleaning unit 312 may spray the clean water in the first chamber onto the ground. The cleaning unit 312 may also rotate to separate the dirt from the ground to scrub the ground.
[0041] In some embodiments, the second cleaning unit 32 may include a suction cylinder 321, a ventilation pipe 322, a fan 323, an exhaust duct 324, a second lifting part 325, and a suction nozzle 326. The fan 323 may be detachably connected to the water tank unit 21, which is convenient for the removal and installation of the fan 323. The exhaust duct 324 may be detachably connected to the water tank unit 21, which is convenient for the separate removal of the exhaust duct 324 during maintenance. One end of the ventilation pipe 322 may be connected to the second chamber, and the other end may be connected to the exhaust duct 324. The fan 323 may discharge the gas in the second chamber to the external space through the exhaust duct 324 through the ventilation pipe 322. One end of the ventilation pipe 322 may be detachably connected to the water tank unit 21, and the other end may be detachably connected to the exhaust duct 324, which is convenient for the installation and maintenance of the ventilation pipe 322. The second lifting part 325 may be detachably connected to the water tank unit 21, which is convenient for the installation and maintenance of the second lifting part 325. The second lifting part 325 can be connected to the suction nozzle 326 for driving the suction nozzle 326 to keep in contact with the ground, so as to suck the sewage and foreign matter on the ground. One end of the suction cylinder 321 can be connected to the second chamber, and the other end can be connected to the suction nozzle 326. The fan 323 extracts the air inside the second chamber, which will also drive the air inside the suction cylinder 321, so that the suction nozzle 326 at the other end of the suction cylinder 321 can recover the sewage and foreign matter on the road surface. One end of the suction cylinder 321 can be detachably connected to the water tank unit 21, and the other end can be detachably connected to the suction nozzle 326, which is convenient for the installation and separate maintenance of the suction cylinder 321.
[0042] In some embodiments, Figure 3 As shown, one end of the ventilation pipe 322 can be connected to the top of the second chamber, thereby preventing the ventilation pipe 322 from sucking in sewage and foreign matter in the second chamber, so that the ventilation pipe 322 only draws air in the second chamber and discharges it through the exhaust duct 324.
[0043] In some embodiments, Figure 4 As shown, the cleaning method may include steps S11 to S13, and each step will be described in detail below.
[0044] Step S11, when the cleaning instruction is triggered, the first cleaning unit 31 can spray the liquid in the first chamber onto the ground to clean the ground, and the liquid can be clean water.
[0045] Step S12, when the liquid in the first chamber is sprayed onto the ground, the liquid contacts the ground and the first cleaning unit 31 scrubs the ground, and the second cleaning unit 32 collects the dirt on the ground into the second chamber, thereby achieving the cleaning work of the ground.
[0046] Step S13, when the second cleaning unit 32 collects the dirt on the ground into the second chamber, the piston unit 22 can move toward the first chamber, thereby increasing the volume of the second chamber, so that the second chamber can accommodate more sewage and foreign matter, avoiding frequent discharge to the sewage treatment station, and improving the working efficiency of the sewage truck.
[0047] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present disclosure, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present disclosure.
Claims
1. A sanitation vehicle, characterized in that: The sanitation vehicle comprises: Vehicle body; A water tank assembly, the water tank assembly comprising a water tank unit and a piston unit; the water tank unit is detachably connected to the vehicle body; the outer peripheral wall of the piston unit is slidably connected to the inner peripheral wall of the water tank unit; the piston unit divides the hollow cavity of the water tank unit into a first chamber and a second chamber; when the piston unit moves, the volume of the first chamber and the volume of the second chamber change in opposite trends; the volume of the first chamber and the volume of the second chamber change at the same rate; A cleaning assembly, the cleaning assembly comprising a first cleaning unit and a second cleaning unit; the first cleaning unit is detachably connected to the water tank unit; the first cleaning unit is communicated with the first chamber; the second cleaning unit is detachably connected to the water tank unit; the second cleaning unit is communicated with the second chamber; The sanitation vehicle includes a set state; the set state includes V1:V2=(3-4.5):1; wherein V1 is the volume of the first chamber, and V2 is the volume of the second chamber.
2. A sanitation vehicle according to claim 1, characterized in that: The setting state also includes V1:V2=(3.7-4.2):
1.
3. A sanitation vehicle according to claim 1, characterized in that: When the piston unit moves toward the first chamber, V0≤V1; wherein V0 is the increased volume of the second chamber.
4. A sanitation vehicle according to claim 1, characterized in that: The piston unit includes a telescopic rod and a piston disc; the telescopic rod is detachably connected to the water tank unit; the telescopic rod is detachably connected to the piston disc; the outer peripheral wall of the piston disc is slidably connected to the inner peripheral wall of the water tank unit; when the length of the telescopic rod changes, the piston disc is driven to move.
5. A sanitation vehicle according to claim 4, characterized in that: The telescopic rod is arranged on a side of the piston disc close to the first chamber.
6. A sanitation vehicle according to claim 1, characterized in that: The water tank unit includes a box body, a movable cover, and a movable door; the box body is detachably connected to the vehicle body; the movable cover is movably connected to the box body; the movable cover is arranged at the top end of the box body; the movable door is movably connected to the box body; the outer peripheral wall of the piston unit is slidably connected to the inner peripheral wall of the box body; the piston unit divides the hollow cavity of the box body into the first chamber and the second chamber; the first cleaning unit is detachably connected to the box body; the second cleaning unit is detachably connected to the movable door; the movable cover is arranged on the side of the box body close to the first chamber; the second cleaning unit is arranged on the side of the box body close to the second chamber.
7. A sanitation vehicle according to claim 1, characterized in that: The first cleaning unit includes a first lifting part and a cleaning part; the first lifting part is detachably connected to the water tank unit; the first lifting part is drivingly connected to the cleaning part; and the cleaning part is communicated with the first chamber.
8. A sanitation vehicle according to claim 1, characterized in that: The second cleaning unit includes a suction cylinder, a ventilation pipe, a fan, an exhaust duct, a second lifting part, and a suction nozzle; the fan is detachably connected to the water tank unit; the exhaust duct is detachably connected to the water tank unit; one end of the ventilation pipe is connected to the second chamber, and the other end is connected to the exhaust duct; one end of the ventilation pipe is detachably connected to the water tank unit, and the other end is detachably connected to the exhaust duct; the second lifting part is detachably connected to the water tank unit; the second lifting part is drivingly connected to the suction nozzle; one end of the suction cylinder is connected to the second chamber, and the other end is connected to the suction nozzle; one end of the suction cylinder is detachably connected to the water tank unit, and the other end is detachably connected to the suction nozzle.
9. A sanitation vehicle according to claim 8, characterized in that: One end of the ventilation pipe is communicated with the top end of the second chamber.
10. A cleaning method, characterized in that: The cleaning method is applied to a sanitation vehicle as described in any one of claims 1 to 9, and the cleaning method comprises: Step S11, based on the triggering of the cleaning instruction, the first cleaning unit sprays the liquid in the first chamber onto the ground; Step S12, based on the liquid in the first chamber being sprayed onto the ground, the second cleaning unit collects dirt on the ground into the second chamber; Step S13: Based on the second cleaning unit collecting the dirt on the ground into the second chamber, the piston unit moves toward the first chamber.