An automobile chassis cleaning device and a cleaning method

Abstract

The present invention belongs to the technical field of automobile chassis cleaning, and discloses an automobile chassis cleaning device and a cleaning method, which include a housing and a pressurization spraying mechanism, a liquid mixing mechanism, and a liquid storage mechanism installed in the housing. The pressurization spraying mechanism includes a pressurization pump and a spray head assembly. The liquid inlet end of the pressurization pump is communicated with the water inlet channel, and the liquid outlet end of the pressurization pump is communicated with the spray head assembly; the liquid mixing mechanism is communicated with the liquid inlet end of the pressurization pump, the liquid outlet end of the pressurization pump, and the spray head assembly. A control valve is arranged between the liquid mixing mechanism and the liquid inlet end of the pressurization pump. The liquid mixing mechanism is used for mixing and stirring the cleaning agent and water; the liquid storage mechanism is communicated with the liquid mixing mechanism, and the liquid storage mechanism is used for storing and conveying the cleaning agent to the liquid mixing mechanism. The automobile chassis cleaning device has a high integration degree, can accurately and effectively wash the automobile chassis multiple times, and is beneficial to improving the service life of the automobile chassis. The above-mentioned automobile chassis cleaning device is used in the automobile chassis cleaning method, which improves the cleaning effect and cleaning efficiency of the automobile chassis.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile chassis cleaning, and particularly relates to an automobile chassis cleaning device and a cleaning method. Background Art

[0002] The automobile chassis is composed of four parts: a powertrain, a running gear, a steering system, and a braking system. It is used to support and install the automobile engine and its various components and assemblies, form the overall shape of the automobile, and receive the power of the engine to make the automobile move and ensure normal driving. However, during long-term driving, various stains are likely to adhere to the automobile chassis. These stains are prone to corrode the automobile chassis. If the automobile chassis is not cleaned for a long time, it will lead to a reduction in the service life of the automobile chassis. Moreover, the existing automobile chassis does not have a cleaning function and cannot wash the stains adhering to the surface of the automobile chassis, resulting in poor practicability. Summary of the Invention

[0003] The purpose of the present invention is to provide an automobile chassis cleaning device and a cleaning method to improve the cleaning effect and cleaning efficiency of the automobile chassis.

[0004] To achieve this purpose, the present invention adopts the following technical solutions:

[0005] In a first aspect, the present invention provides an automobile chassis cleaning device, including a housing and the following components installed in the housing:

[0006] A pressurized spraying mechanism, the pressurized spraying mechanism includes a booster pump and a nozzle assembly. The liquid inlet end of the booster pump is communicated with the water inlet channel, and the liquid outlet end of the booster pump is communicated with the nozzle assembly;

[0007] A liquid mixing mechanism, the liquid mixing mechanism is communicated with the liquid inlet end of the booster pump, the liquid outlet end of the booster pump, and the nozzle assembly. A control valve is arranged between the liquid mixing mechanism and the liquid inlet end of the booster pump. The liquid mixing mechanism is used for mixing and stirring a cleaning agent and water;

[0008] A liquid storage mechanism, the liquid storage mechanism is communicated with the liquid mixing mechanism, and the liquid storage mechanism is used for storing and conveying the cleaning agent to the liquid mixing mechanism.

[0009] Optionally, the nozzle assembly includes a first driving motor, a rotating shaft, and at least one high-pressure nozzle communicated with the liquid outlet end of the booster pump. The rotating shaft is rotatably installed in the housing, and at least one high-pressure nozzle is fixedly connected to the rotating shaft. The first driving motor is used for driving the rotating shaft to rotate to adjust the lifting angle of the high-pressure nozzle.

[0010] Optionally, the liquid mixing mechanism includes a liquid mixing chamber, a stirring rod, and a second driving motor. The liquid inlet end of the booster pump, the liquid outlet end of the booster pump, and the liquid mixing mechanism are respectively communicated with the liquid mixing chamber. The control valve is arranged between the liquid inlet end of the booster pump and the liquid mixing chamber. The stirring rod is rotatably installed in the liquid mixing chamber, and the second driving motor is used to drive the stirring rod to rotate.

[0011] Optionally, the liquid storage mechanism includes a liquid storage chamber and a liquid pumping module. The liquid storage chamber is communicated with the liquid pumping module and is used for storing the cleaning agent. The liquid pumping module is communicated with the liquid mixing mechanism and is used for pumping the cleaning agent to the liquid mixing mechanism.

[0012] Optionally, the liquid pumping module includes:

[0013] A liquid pumping chamber, which is correspondingly communicated with the liquid storage chamber and the liquid mixing mechanism through a cleaning agent input channel and a cleaning agent output channel;

[0014] A linear output mechanism, which is installed in the liquid pumping chamber. A piston is arranged at the output end of the linear output mechanism. The linear output mechanism can drive the piston to move in the liquid pumping chamber, so that the cleaning agent flowing in from the cleaning agent input channel is pressurized and conveyed to the cleaning agent output channel.

[0015] Optionally, the linear output mechanism includes:

[0016] A third driving motor, which is fixedly installed in the liquid pumping chamber;

[0017] A rotating screw, which is connected to the output shaft of the third driving motor;

[0018] A connecting frame, one end of which is threadedly connected to the rotating screw and the other end is connected to the piston.

[0019] Optionally, a one-way valve is arranged on the cleaning agent input channel and / or the cleaning agent output channel.

[0020] Optionally, the vehicle chassis cleaning device further includes a control module, which is fixedly installed on the housing. The control module is communicatively connected to the booster spraying mechanism, the liquid mixing mechanism, the control valve, and the liquid storage mechanism.

[0021] Optionally, a liquid injection port is opened on the liquid storage chamber, and a liquid storage box cover is detachably installed on the liquid injection port.

[0022] In a second aspect, the present invention provides a vehicle chassis cleaning method, which uses the above vehicle chassis cleaning device and includes the following steps:

[0023] Step S1, the supercharging and spraying mechanism is started to perform a preliminary flushing of the vehicle chassis;

[0024] Step S2, the supercharging and spraying mechanism stops, the liquid storage mechanism and the control valve are opened, the cleaning agent and the water enter the liquid mixing mechanism, and the liquid mixing mechanism mixes the cleaning agent and the water evenly;

[0025] Step S3, the supercharging and spraying mechanism mixes and pressurizes and sprays the mixed liquid in the liquid mixing mechanism with a part of the water entering the supercharging and spraying mechanism to perform a secondary cleaning of the vehicle chassis.

[0026] Advantages of the present invention:

[0027] The vehicle chassis cleaning device of the present invention can perform a preliminary cleaning of the vehicle chassis by pre-pressurizing and spraying water through the supercharging and spraying mechanism. The liquid mixing mechanism evenly mixes the cleaning agent and the water, and the supercharging and spraying mechanism synchronously sprays the mixed liquid and the pressurized water to perform a secondary cleaning of the vehicle chassis. The liquid storage mechanism can store and transport the cleaning agent to the liquid mixing mechanism. The overall structure of the vehicle chassis cleaning device is simple, with high integration and convenient installation, and can accurately and effectively perform multiple flushes on the vehicle chassis, which is beneficial to improving the service life of the vehicle chassis.

[0028] In the vehicle chassis cleaning method of the present invention, the above-mentioned vehicle chassis cleaning device is used, making the cleaning of the vehicle chassis cleaner and faster, and improving the cleaning effect and cleaning efficiency of the vehicle chassis. Description of the drawings

[0029] Figure 1 is a schematic structural diagram of the vehicle chassis cleaning device described in the embodiment of the present invention;

[0030] Figure 2 is a top sectional view of the vehicle chassis cleaning device described in the embodiment of the present invention;

[0031] Figure 3 is Figure 2 a partial enlarged view of part A in

[0032] Figure 4 is a front sectional view of the vehicle chassis cleaning device described in the embodiment of the present invention.

[0033] In the figure:

[0034] 1. Supercharging and spraying mechanism; 11. Supercharging pump; 12. Sprayer assembly; 121. First driving motor; 122. Rotating shaft; 123. High-pressure nozzle;

[0035] 2. Liquid mixing mechanism; 21. Liquid mixing chamber; 22. Stirring rod; 23. Second driving motor; 24. Control valve;

[0036] 3. Liquid storage mechanism; 31. Liquid storage chamber; 311. Liquid injection port; 312. Liquid storage box cover; 32. Liquid pumping module; 321. Liquid pumping chamber; 3211. Cleaner input channel; 3212. Cleaner output channel; 3213. Check valve; 322. Linear output mechanism; 3221. Third driving motor; 3222. Rotating stud; 3223. Connecting frame; 323. Piston;

[0037] 4. Control module;

[0038] 100. Housing; 101. Water inlet channel. Detailed implementation manner

[0039] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar components or components with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0040] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, a mechanical connection, an electrical connection, a direct connection, or an indirect connection through an intermediate medium. It may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the description of the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first feature and the second feature, or may include the situation where the first feature and the second feature are not in direct contact but through other features between them. Moreover, the first feature being "above", "above", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below", and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.

[0042] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention. In addition, the terms "first" and "second" are only used for distinction in description and do not have special meanings.

[0043] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings and through specific embodiments.

[0044] As Figures 1-4 shown, the present invention provides an automobile chassis cleaning device, which includes a housing 100 and a pressurization spraying mechanism 1, a liquid mixing mechanism 2 and a liquid storage mechanism 3 installed in the housing 100. The pressurization spraying mechanism 1 includes a booster pump 11 and a nozzle assembly 12. The liquid inlet end of the booster pump 11 is communicated with the water inlet channel 101, and the liquid outlet end of the booster pump 11 is communicated with the nozzle assembly 12; the liquid mixing mechanism 2 is communicated with the liquid inlet end of the booster pump 11, the liquid outlet end of the booster pump 11 and the nozzle assembly 12. A control valve 24 is arranged between the liquid inlet end of the booster pump 11 and the liquid mixing mechanism 2. The liquid mixing mechanism 2 is used for mixing and stirring the cleaning agent and water; the liquid storage mechanism 3 is communicated with the liquid mixing mechanism 2, and the liquid storage mechanism 3 is used for storing and conveying the cleaning agent to the liquid mixing mechanism 2.

[0045] In this embodiment, the pressurization spraying mechanism 1, the liquid mixing mechanism 2 and the liquid storage mechanism 3 are integrated in a flat square housing 100. The housing 100 is made of metal material and is fixedly installed at a suitable position on the lower end surface of the automobile chassis. When in use, the water inlet channel 101 is connected to an external water source. The clear water in the water inlet channel 101 is compressed by the booster pump 11 and sprayed out from the nozzle assembly 12 to initially wash the automobile chassis. After the initial washing of the automobile chassis is completed, the liquid storage mechanism 3 conveys the cleaning agent to the liquid mixing mechanism 2, the control valve 24 is opened, and a part of the clear water in the water inlet channel 101 enters the liquid mixing mechanism 2. After the liquid mixing mechanism 2 fully stirs and mixes the cleaning agent and water, it is mixed with the clear water pressurized by the booster pump 11 and sprayed out from the nozzle assembly 12 to perform secondary cleaning on the automobile chassis, making the cleaning of the automobile chassis more thorough.

[0046] Optionally, the nozzle assembly 12 includes a first drive motor 121, a rotating shaft 122 and at least one high-pressure nozzle 123 communicated with the liquid outlet end of the booster pump 11. The rotating shaft 122 is rotatably installed in the housing 100, and at least one high-pressure nozzle 123 is fixedly connected to the rotating shaft 122. The first drive motor 121 is used to drive the rotating shaft 122 to rotate to adjust the lifting angle of the high-pressure nozzle 123.

[0047] In this embodiment, as Figure 2 shown, there are two high-pressure nozzles 123. The two high-pressure nozzles 123 are communicated with the liquid outlet end of the booster pump 11. The lifting angle of the high-pressure nozzle 123 in this embodiment is adjustable. The high-pressure nozzle 123 is fixedly connected to the rotating shaft 122. The first drive motor 121 drives the high-pressure nozzle 123 to rotate, and the rotation angle of the high-pressure nozzle 123 is adjustable to fully clean the automobile chassis and avoid cleaning dead corners.

[0048] Optionally, the liquid mixing mechanism 2 includes a liquid mixing chamber 21, a stirring rod 22, and a second driving motor 23. The liquid inlet end, the liquid outlet end of the booster pump 11, and the liquid mixing mechanism 2 are respectively communicated with the liquid mixing chamber 21. A control valve 24 is arranged between the liquid inlet end of the booster pump 11 and the liquid mixing chamber 21. The stirring rod 22 is rotatably installed in the liquid mixing chamber 21, and the second driving motor 23 is used to drive the stirring rod 22 to rotate.

[0049] In this embodiment, as Figure 2 shown, the second driving motor 23 is fixedly installed on the inner wall of the housing 100. The stirring end of the stirring rod 22 extends into the liquid mixing chamber 21. The second driving motor 23 can drive the stirring rod 22 to rotate and stir in the liquid mixing chamber 21 so that the detergent and water in the liquid mixing chamber 21 are mixed evenly.

[0050] Optionally, the liquid storage mechanism 3 includes a liquid storage chamber 31 and a liquid pumping module 32. The liquid storage chamber 31 is communicated with the liquid pumping module 32 and is used for storing the detergent. The liquid pumping module 32 is communicated with the liquid mixing mechanism 2 and is used for pumping the detergent to the liquid mixing mechanism 2. In this embodiment, as Figure 2 and Figure 3 shown, the liquid storage chamber 31 is used for storing the detergent. The detergent in the liquid storage chamber 31 can be quantitatively pumped to the liquid mixing mechanism 2 through the liquid pumping module 32, realizing the quantitative and accurate delivery of the detergent.

[0051] Optionally, the liquid pumping module 32 includes a liquid pumping chamber 321 and a linear output mechanism 322. The liquid pumping chamber 321 is respectively communicated with the liquid storage chamber 31 and the liquid mixing mechanism 2 through a detergent input channel 3211 and a detergent output channel 3212. The linear output mechanism 322 is installed in the liquid pumping chamber 321. A piston 323 is arranged at the output end of the linear output mechanism 322. The linear output mechanism 322 can drive the piston 323 to move in the liquid pumping chamber 321 so that the detergent flowing in from the detergent input channel 3211 is pressurized and delivered to the detergent output channel 3212.

[0052] In this embodiment, as Figure 3 shown, the detergent input channel 3211 and the detergent output channel 3212 are respectively communicated with the liquid storage chamber 31. The linear output mechanism 322 can drive the piston 323 to linearly move in the liquid pumping chamber 321, and the detergent is quantitatively pumped by the extrusion of the piston 323. It can be understood that when the linear output mechanism 322 drives the piston 323 to move away from the detergent input channel 3211 and the detergent output channel 3212, a negative pressure is generated in the liquid pumping chamber 321 so that the detergent in the liquid storage chamber 31 enters the liquid pumping chamber 321. When the linear output mechanism 322 drives the piston 323 to move towards the detergent input channel 3211 and the detergent output channel 3212, the detergent in the liquid pumping chamber 321 enters the liquid mixing chamber 21 under the extrusion of the piston 323.

[0053] Optionally, the linear output mechanism 322 includes a third driving motor 3221, a rotating stud 3222, and a connecting frame 3223. The third driving motor 3221 is fixedly installed in the liquid pumping chamber 321; the rotating stud 3222 is connected to the output shaft of the third driving motor 3221; one end of the connecting frame 3223 is threadedly connected to the rotating stud 3222, and the other end is connected to the piston 323.

[0054] In this embodiment, as Figure 3 shown, the linear output mechanism 322 in this embodiment mainly consists of a third driving motor 3221, a rotating stud 3222, and a connecting frame 3223. A threaded through-hole is provided at one end of the connecting frame 3223, and the rotating stud 3222 is threadedly connected to the threaded through-hole. The piston 323 is installed on the connecting frame 3223. When the third driving motor 3221 starts to drive the rotating stud 3222 to rotate, the connecting frame 3223 drives the piston 323 to move linearly. By controlling the output rotation direction of the third driving motor 3221, the moving direction of the piston 323 can be correspondingly controlled. In addition, in this embodiment, common linear driving components such as hydraulic rods and telescopic rods can also be used to achieve the linear movement of the piston 323, and this embodiment is not limited thereto.

[0055] Optionally, a one-way valve 3213 is provided on the cleaning agent input channel 3211 and / or the cleaning agent output channel 3212.

[0056] In this embodiment, as Figure 3 shown, one-way valves 3213 are provided on both the cleaning agent input channel 3211 and the cleaning agent output channel 3212 to prevent the liquid in the pipeline from flowing back. For the one-way valve 3213 on the cleaning agent input channel 3211, the cleaning agent can only flow into the liquid pumping chamber 321 from the direction of the liquid storage chamber 31; for the one-way valve 3213 on the cleaning agent output channel 3212, the cleaning agent can only flow into the mixing chamber 21 from the direction of the liquid pumping chamber 321.

[0057] Optionally, the vehicle chassis cleaning device further includes a control module 4. The control module 4 is fixedly installed on the housing 100, and the control module 4 is communicatively connected to the pressurized spraying mechanism 1, the mixing mechanism 2, the control valve 24, and the liquid storage mechanism 3.

[0058] In this embodiment, as Figure 2 shown, the vehicle chassis cleaning device further includes a control module 4. The control module 4 can be a controller. The control module 4 is communicatively connected to the control valve 24, the first driving motor 121, the second driving motor 23, and the third driving motor 3221, and can control the start and stop of the electrical components. Optionally, the control module 4 can also be communicatively connected to an external control panel. The external control panel can specifically be a touch panel in the vehicle body, and the control module 4 can be controlled to operate inside the vehicle, improving the user experience.

[0059] Optionally, a liquid injection port 311 is provided on the liquid storage chamber 31, and a liquid storage box cover 312 is detachably installed on the liquid injection port 311. As Figure 2 shown, in this embodiment, a liquid injection port 311 is provided on the liquid storage chamber 31, and the liquid storage box cover 312 is detachably installed on the liquid injection port 311, which is convenient for users to replenish the cleaning agent in a timely manner.

[0060] In addition, this embodiment also provides a method for cleaning an automobile chassis, which uses the above-mentioned automobile chassis cleaning device, and includes the following steps:

[0061] Step S1, the pressurized injection mechanism 1 is started to perform a preliminary flushing of the automobile chassis.

[0062] Specifically, in this step, the water inlet passage 101 has been connected to an external water source. At this time, the control valve 24 is in a closed state. The booster pump 11 pressurizes and pumps the clear water in the water inlet passage 101 to the high-pressure nozzle 123. The control module 4 controls the first drive motor 121 to start and adjusts the lifting angle of the high-pressure nozzle 123 to perform a preliminary flushing of the automobile chassis.

[0063] Step S2, the pressurized injection mechanism 1 stops, the liquid storage mechanism 3 and the control valve 24 are opened, the cleaning agent and water enter the liquid mixing mechanism 2, and the liquid mixing mechanism 2 mixes the cleaning agent and water evenly.

[0064] Specifically, in this step, the control module 4 controls the control valve 24, the second drive motor 23 and the third drive motor 3221 to be opened. The third drive motor 3221 rotates forward to drive the rotating stud 3222 to rotate forward, and the piston 323 moves upward. The cleaning agent in the liquid storage chamber 31 enters the liquid pumping chamber 321 through the cleaning agent input passage 3211. Then the third drive motor 3221 rotates in reverse to drive the rotating stud 3222 to rotate in reverse, and the piston 323 moves downward to reset, squeezing out the cleaning agent in the liquid pumping chamber 321 and entering the liquid mixing chamber 21 through the cleaning agent output passage 3212. The second drive motor 23 drives the stirring rod 22 to rotate to mix the cleaning agent and water evenly.

[0065] Step S3, the pressurized injection mechanism 1 mixes and pressurizes and sprays the mixed liquid in the liquid mixing mechanism 2 with a part of the water entering the pressurized injection mechanism 1 to perform a secondary cleaning of the automobile chassis.

[0066] Specifically, in this step, after the cleaning agent and water in the liquid mixing chamber 21 are mixed evenly, the booster pump 11 mixes and pressurizes and sprays a part of the water entering the booster pump 11 and the mixed liquid in the liquid mixing chamber 21 together to perform a secondary cleaning of the automobile chassis.

[0067] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. An automobile chassis cleaning device is fixedly installed at a suitable position on the lower end face of the automobile chassis, and is characterized in that, Comprising a housing (100) and the following components installed within the housing (100): A pressurized injection mechanism (1), the pressurized injection mechanism (1) comprising a pressurizing pump (11) and a nozzle assembly (12). The liquid inlet end of the pressurizing pump (11) is in communication with a water inlet passage (101), and the liquid outlet end of the pressurizing pump (11) is in communication with the nozzle assembly (12). The water inlet passage (101) is connected to an external water source, and the clear water within the water inlet passage (101) is ejected from the nozzle assembly (12) after being compressed by the pressurizing pump (11). A liquid mixing mechanism (2), the liquid mixing mechanism (2) being in communication with the liquid inlet end of the pressurizing pump (11), the liquid outlet end of the pressurizing pump (11), and the nozzle assembly (12). A control valve (24) is provided between the liquid inlet end of the pressurizing pump (11) and the liquid mixing mechanism (2). The liquid mixing mechanism (2) is used for mixing and stirring a cleaning agent and water. Opening the control valve (24) allows a portion of the clear water within the water inlet passage (101) to enter the liquid mixing mechanism (2). After the liquid mixing mechanism (2) fully stirs and mixes the cleaning agent and water, it is mixed with the clear water pressurized by the pressurizing pump (11) and ejected from the nozzle assembly (12). A liquid storage mechanism (3), the liquid storage mechanism (3) being in communication with the liquid mixing mechanism (2). The liquid storage mechanism (3) is used for storing and conveying the cleaning agent to the liquid mixing mechanism (2). The liquid mixing mechanism (2) includes a liquid mixing chamber (21), a stirring rod (22), and a second drive motor (23). The liquid inlet end of the pressurizing pump (11), the liquid outlet end of the pressurizing pump (11), and the liquid mixing mechanism (2) are respectively in communication with the liquid mixing chamber (21). The control valve (24) is provided between the liquid inlet end of the pressurizing pump (11) and the liquid mixing chamber (21). The stirring rod (22) is rotatably installed within the liquid mixing chamber (21), and the second drive motor (23) is used to drive the stirring rod (22) to rotate. The liquid storage mechanism (3) includes a liquid storage chamber (31) and a liquid pumping module (32). The liquid storage chamber (31) is in communication with the liquid pumping module (32) and is used for storing the cleaning agent. The liquid pumping module (32) is in communication with the liquid mixing mechanism (2) and is used to pump the cleaning agent to the liquid mixing mechanism (2). The cleaning agent within the liquid storage chamber (31) can be quantitatively pumped to the liquid mixing mechanism (2) through the liquid pumping module (32), achieving quantitative and precise conveyance of the cleaning agent. The liquid pumping module (32) includes: A liquid pumping chamber (321), the liquid pumping chamber (321) being in communication with the liquid storage chamber (31) and the liquid mixing mechanism (2) respectively through a cleaning agent input passage (3211) and a cleaning agent output passage (3212). A linear output mechanism (322) is installed in the liquid pumping chamber (321). A piston (323) is provided at the output end of the linear output mechanism (322). The linear output mechanism (322) can drive the piston (323) to move in the liquid pumping chamber (321), so that the cleaning agent flowing in from the cleaning agent input channel (3211) is pressurized and conveyed to the cleaning agent output channel (3212).

2. The vehicle chassis cleaning device according to claim 1, characterized in that, The nozzle assembly (12) includes a first drive motor (121), a rotating shaft (122), and at least one high-pressure nozzle (123) communicated with the liquid outlet end of the booster pump (11). The rotating shaft (122) is rotatably installed in the housing (100). At least one high-pressure nozzle (123) is fixedly connected to the rotating shaft (122). The first drive motor (121) is used to drive the rotating shaft (122) to rotate to adjust the lifting angle of the high-pressure nozzle (123).

3. The vehicle chassis cleaning device according to claim 1, characterized in that, The linear output mechanism (322) includes: A third drive motor (3221) fixedly installed in the liquid pumping chamber (321); A rotating stud (3222) connected to the output shaft of the third drive motor (3221); A connecting frame (3223) with one end threadedly connected to the rotating stud (3222) and the other end connected to the piston (323).

4. The vehicle chassis cleaning device according to claim 1, characterized in that, A one-way valve (3213) is provided on the cleaning agent input channel (3211) and / or the cleaning agent output channel (3212).

5. The vehicle chassis cleaning device according to claim 1, characterized in that, The vehicle chassis cleaning device further includes a control module (4) fixedly installed in the housing (100). The control module (4) is communicatively connected to the booster spraying mechanism (1), the liquid mixing mechanism (2), the control valve (24), and the liquid storage mechanism (3).

6. The vehicle chassis cleaning device according to claim 1, characterized in that, A liquid injection port (311) is provided on the liquid storage chamber (31), and a liquid storage box cover (312) is detachably installed on the liquid injection port (311).

7. A method for cleaning an automobile chassis, characterized in that, Using the vehicle chassis cleaning device according to any one of claims 1-6, the method includes the following steps: Step S1, the booster spraying mechanism (1) is started to perform a preliminary flushing of the vehicle chassis; Step S2, the liquid storage mechanism (3) and the control valve (24) are opened, the cleaning agent and the water enter the liquid mixing mechanism (2), and the liquid mixing mechanism (2) mixes the cleaning agent and the water evenly; Step S3, the booster spraying mechanism (1) mixes and pressurizes and sprays the mixed liquid in the liquid mixing mechanism (2) with part of the water entering the booster spraying mechanism (1) to perform a secondary cleaning of the vehicle chassis.

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