A front wheel wheel cavity sealing apparatus, system, cleaning control method, and vehicle

Abstract

This invention belongs to the field of vehicle component technology and discloses a front wheel cavity sealing device, system, cleaning control method, and vehicle. It includes a sealing device, a traction device, and a torque detection device. The sealing device comprises a waterproof bearing, a connecting device, and a wheel cavity cover. The waterproof bearing is fixedly connected to the wheel cavity cover via the connecting device. The torque detection device is clamped and fixed between the connecting device and the wheel cavity cover. The traction device includes a retractable flexible material, one end of which is fixedly connected to the wheel cavity cover, and the other end is fixedly connected to the front of the vehicle body. This invention uses a waterproof bearing, and through the center of gravity arrangement and traction structure, the cover rotates with the wheel and is decoupled from the wheel's rolling motion. A torque sensor collects the torque of the connecting rod and provides early warning, solving the problem of bearing aging and frictional changes. The torque sensor and millimeter-wave radar transmit wheel cavity environmental information and connecting rod torque information to the VCU, controlling the cleaning device to clean the wheel cavity.

Description

Technical Field

[0001] This invention belongs to the field of vehicle component technology, specifically relating to a front wheel cavity sealing device, system, cleaning control method, and vehicle. Background Technology

[0002] With the rapid development of the logistics industry, express delivery has become one of the main application scenarios for commercial vehicles. Under such conditions, commercial vehicles need to maintain high-speed driving for extended periods, and air resistance has become a key factor affecting vehicle energy consumption, driving stability, and driving experience. Related research indicates that wind resistance generated by the wheels and the space around them accounts for approximately 30% of the total vehicle resistance. During high-speed driving of commercial vehicles, air resistance constitutes a significant proportion of the vehicle's total energy consumption, not only substantially increasing fuel or electricity consumption but also limiting vehicle driving efficiency. This contradicts the industry's trend towards energy conservation and environmental protection and actual operational needs.

[0003] Specifically, the front wheel cavity area of ​​commercial vehicles has numerous internal components and a complex structure. These components move at high speeds in sync with the wheels, resulting in obstructed airflow and an extremely chaotic flow field. This chaotic flow field not only generates significant aerodynamic drag, further exacerbating energy consumption, but also produces noticeable aerodynamic noise. At high speeds, aerodynamic noise from the front wheel cavity becomes a significant component of vehicle noise, affecting passenger comfort and increasing noise pollution on urban roads. Furthermore, the chaotic flow field allows rainwater and road pollutants to more easily enter the front wheel cavity, causing component contamination and corrosion, shortening component lifespan, and increasing vehicle maintenance costs.

[0004] To address the aforementioned issues, the industry has recognized that optimizing the shielding of the front wheel cavity area of ​​commercial vehicles is an effective way to reduce aerodynamic drag coefficient, improve vehicle styling, and reduce pollutant transmission. Related technological improvements are continuously being advanced. Among these advancements, patent CN222022459U discloses a wheel cover assembly and a vehicle. This invention seals the outer side of the wheel with the cover body and uses a cap to seal the through-holes reserved when the cover body engages with the wheel, thus achieving the closure of the reserved windows on both the wheel and the cover body. This reduces overall vehicle wind resistance to a certain extent, contributing to improved vehicle stability and reduced energy consumption.

[0005] However, the aforementioned existing technology still has obvious limitations: on the one hand, the invention only seals the reserved through holes on the outer side of the wheel and the decorative cover, but does not effectively seal the wheel opening of the front wheel cavity. The core problems of chaotic flow field, large aerodynamic drag, and susceptibility to rainwater pollution in the front wheel cavity area have not been fundamentally solved. On the other hand, the decorative cover structure of the invention is only applicable to circular cover plates, with poor adaptability, and cannot meet the actual application needs of different models and wheel types of commercial vehicles, making it difficult to promote and apply it widely.

[0006] Therefore, there is still an urgent need for aerodynamic optimization of the front wheel cavity area under the current express delivery conditions of commercial vehicles. There is a need for a technical solution that can effectively seal the wheel opening, adapt to various wheel types, and thus significantly reduce aerodynamic drag, aerodynamic noise and rainwater pollution, while taking into account practicality and versatility, in order to solve the shortcomings of existing technologies and meet the development needs of energy conservation, environmental protection and efficient operation of commercial vehicles. Summary of the Invention

[0007] The purpose of this invention is to provide a front wheel cavity sealing device, system, cleaning control method, and vehicle. The traditional front wheel end sealing structure is designed as a waterproof bearing. Through center-of-gravity arrangement and traction structure, the wheel cavity cover maintains a constant state of motion. A torque sensor collects torque data from the connecting rod, issuing a warning when the torque exceeds a design value, thus addressing the issue of bearing aging and frictional changes. The torque sensor and millimeter-wave radar transmit near-wheel cavity environmental information and connecting rod torque information to the vehicle control unit, controlling the adjustment of water pressure and volume at the cleaning device nozzles to solve the cleaning problem within the wheel cavity.

[0008] The specific details of the plan are as follows:

[0009] A front wheel cavity sealing device is applied to the front of a vehicle body and the front wheel. It includes a sealing device, a traction device, and a torque detection device. The sealing device includes a waterproof bearing, a connecting device, and a wheel cavity cover plate. The waterproof bearing is fixedly connected to the wheel cavity cover plate through the connecting device. The torque detection device is clamped and fixed between the connecting device and the wheel cavity cover plate to obtain torque information of the connecting device. The traction device includes a retractable flexible material. One end of the retractable flexible material is fixedly connected to the wheel cavity cover plate, and the other end is fixedly connected to the front of the vehicle body to realize that the cover plate turns with the wheel and is decoupled from the rolling of the wheel.

[0010] This invention is based on the automobile resistance formula, which states that on a straight road, the resistance experienced by a car includes rolling resistance and air resistance, as shown in the formula: ,in The total resistance of the vehicle is N; m is the mass in g; g is the acceleration due to gravity. ; The air drag coefficient is dimensionless. The windward area is expressed in m². air density, unit ; is the relative vehicle speed, in m / s; f is the rolling resistance coefficient, dimensionless.

[0011] Rolling resistance is constant at a certain vehicle speed; by reducing... This effectively reduces drag. By completely covering the front wheel wells, this device isolates the dirty airflow generated by the combined effects of tire rolling and airflow from the engine compartment, reducing airflow disturbance along the sides of the vehicle and thus lowering the overall drag coefficient. The problem of increased brake temperature and contaminant buildup caused by the closed wheel wells can be addressed by cooling and cleaning with high-pressure nozzles.

[0012] The sealing device of the front wheel cavity sealing device of the present invention includes a waterproof bearing, a connecting device, and a wheel cavity cover plate. The connecting device includes a cylindrical base, a connecting rod, and a connecting plate. The upper and lower ends of the connecting rod are fixedly connected to the cylindrical base and the connecting plate, respectively. The cylindrical base is fixedly connected to the inner ring of the waterproof bearing. The connecting plate is provided with threaded connecting holes. The wheel cavity cover plate is fixed to the connecting plate by bolts and threaded connecting holes. The torque detection device is a patch-type torque sensor. The present invention preferably uses a patch-type piezoelectric torque sensor. The patch-type piezoelectric torque sensor is fixed between the connecting plate and the wheel cavity cover plate by bolts and is used to detect the torque of the connecting rod. The patch-type piezoelectric torque sensor is electrically connected to the vehicle controller. The patch-type piezoelectric torque sensor sends the collected torque information to the vehicle controller. When the torque of the connecting rod exceeds the preset maximum value, the vehicle controller will alarm the driver, and the driver will check the waterproof bearing to avoid problems caused by changes in friction due to bearing aging. The traction device includes a retractable flexible material. One end of the retractable flexible material is fixedly connected to a material box on the wheel cavity cover plate, and the other end is fixedly connected to the first pedal of the vehicle. This is used to enable the cover plate to turn with the wheel and decouple from the wheel rolling, so that the cover plate always maintains a constant motion state.

[0013] Furthermore, the wheel cavity cover is not a complete circular cover, and its overall shape matches the front wheel, including an arc-shaped missing part, which is located at the bottom of the wheel cavity cover.

[0014] The wheel well cover of this invention has a shape that matches the shape of the front wheel, allowing it to completely cover the entire wheel well or the upper part of it. Preferably, the cover is non-circular, with an arc-shaped notch at the bottom. The area of ​​this notch is less than one-third the area of ​​a complete circular cover. Once installed, the wheel well cover completely covers the upper part of the front wheel well. The notch at the bottom is designed to match the vehicle's structural requirements. The shape of the wheel well cover must match the structure of the front wheel and surrounding areas to avoid interference during driving.

[0015] Furthermore, the torque detection device includes a patch-type torque sensor.

[0016] The torque detection device of the present invention uses a patch torque sensor, which is intended to facilitate fixing the torque sensor between the inner surfaces of the connecting plate and the wheel cavity cover plate by bolts.

[0017] Furthermore, the torque detection device includes a patch-type piezoelectric torque sensor.

[0018] The present invention preferably uses a patch piezoelectric torque sensor, but other torque sensors can also be used. Although no other torque sensors are listed in the present invention because they are existing technologies, any torque sensor that can achieve the corresponding technical effect through the technical solution of the present invention is within the protection scope of the present invention.

[0019] Furthermore, the connecting device includes a cylindrical base, a connecting rod, and a connecting plate. The cylindrical base is fixedly connected to the inner ring of the waterproof bearing. The lower end of the connecting rod is fixedly connected to the center of the cylindrical base, and its upper end is fixedly connected to the lower end face of the connecting plate. The connecting plate is provided with a threaded connection hole, and the center of the wheel cavity cover is provided with a matching threaded connection hole. The connecting plate is threadedly fixedly connected to the inner surface of the wheel cavity cover. The patch-type piezoelectric torque sensor is threadedly clamped and fixed between the inner surfaces of the connecting plate and the wheel cavity cover.

[0020] The connecting device uses a cylindrical base that matches the shape and size of the inner ring of the waterproof bearing, and the connecting device is fixedly installed in the inner ring of the waterproof bearing. Preferably, the connecting plate of this invention has threaded connecting holes, and bolts are sequentially passed through the threaded connecting holes on the connecting plate, through the threaded hole of the patch-type piezoelectric torque sensor, and through the threaded connecting hole at the center of the wheel cavity cover plate for screwing and fixing connection.

[0021] Furthermore, the traction device also includes a fixed bracket and a material box. The fixed bracket is fixedly connected to the boarding foot component at the front of the vehicle body. The material box includes a drum, which is fixedly connected inside the material box. The material box is fixedly connected to the inside of the wheel cavity cover. One end of the retractable flexible material is fixed to the fixed bracket, and the other end is fixedly connected to the drum. The flexible material can be pulled out or retracted into the material box.

[0022] The fixed bracket of the traction device of the present invention is fixedly installed on the upper foot pedal component at the front of the vehicle body, preferably on the first foot pedal of the vehicle. A material box contains a reel; one end of a retractable flexible material is fixed to the fixed bracket, and the other end is fixed to the reel. The retractable flexible material can be pulled out or retracted into the material box. The traction device can cause the wheel cavity cover to rotate when the wheel turns, decoupling it from the wheel's rolling motion, thus maintaining a constant state of motion for the cover.

[0023] A front wheel cavity sealing system includes two aforementioned front wheel cavity sealing devices, a vehicle front axle, two cleaning devices, two radar detection units, and a vehicle controller. The outer surfaces of both ends of the vehicle front axle are provided with circular grooves in the middle. The outer ring of a waterproof bearing is fixedly connected to the circular grooves via an interference fit. The cleaning devices are used to clean the inside of the wheel cavity. The radar detection units include millimeter-wave radar for detecting changes in the mudguard profile. The torque detection device, cleaning devices, and radar detection units are electrically connected to the vehicle controller.

[0024] The front wheel cavity sealing system of the present invention includes a vehicle front axle and two front wheel cavity sealing devices. The two front wheel cavity sealing devices are respectively installed on the outer side of the axle end of the vehicle front axle. A circular groove is provided at the center of the outer side of the front axle. A waterproof bearing is interference-fitted and fixedly installed in the circular groove. The cleaning device includes a water tank, a high-pressure water pump, a nozzle controller and a high-pressure nozzle. The vehicle controller and the radar detection unit, namely the millimeter-wave radar and the torque detection device, are electrically connected. When the vehicle controller (VCU) determines that the outer contour of the mudguard detected by the millimeter-wave radar has changed, the VCU sends a cleaning command to the nozzle controller. The nozzle controller sends information to the high-pressure water pump to control the water pressure and water volume adjustment of the high-pressure nozzle to clean the inside of the wheel cavity and the mudguard.

[0025] Furthermore, each cleaning device includes a water tank, a high-pressure nozzle, a high-pressure water pump, and a nozzle controller. The water tank is connected to the inlet of the high-pressure water pump via a water supply pipeline, and the outlet of the high-pressure water pump is connected to the high-pressure nozzle via a pipeline. The high-pressure water pump is electrically connected to the nozzle controller, and the nozzle controller is electrically connected to the vehicle controller.

[0026] A cleaning control method for a front wheel cavity sealing system, applied to the aforementioned front wheel cavity sealing system, includes the following specific steps:

[0027] When the wheels turn, the retractable flexible material stretch wheel cavity cover moves accordingly. The driver selects the nozzle control mode. If the manual cleaning program is selected, the vehicle controller immediately sends a message to the nozzle controller of the cleaning device. The nozzle controller sends a message to the high-pressure water pump, the high-pressure water pump starts to work, the high-pressure nozzle opens, and the mudguards are cleaned.

[0028] If automatic control is selected, the millimeter-wave radar detects the outline of the mudguard and sends the information to the vehicle controller. When the vehicle controller determines that the outline of the mudguard has changed and cleaning is required, it sends information to the nozzle controller of the cleaning device. The nozzle controller sends a signal to the high-pressure water pump, which starts working and the high-pressure nozzle opens to clean the mudguard. If the vehicle controller determines that the outline of the mudguard has not changed and cleaning is not required, it does not send information and the high-pressure nozzle does not start.

[0029] A vehicle includes the aforementioned front wheel cavity sealing system, and further includes two front wheels, which are fixed to the corresponding front axle outer wheel bearing positions by wheel hub bolts. A connecting rod passes through the center hole of the wheel hub. A connecting plate and a wheel cavity cover are exposed on the outer side of the wheel and have a rotational clearance with the outer side of the wheel. Two cleaning devices are respectively installed on both sides of the frame with high-pressure nozzles facing the mudguards. Two radar detection units are correspondingly installed on the left and right protective areas of the vehicle. The vehicle controller is installed inside the vehicle.

[0030] The vehicle controller is installed inside the vehicle. The two wheels are fixed to the corresponding front axle outer wheel bearing positions by wheel hub bolts. The connecting rod passes through the center hole of the wheel hub. The connecting plate and wheel cavity cover are exposed on the outer side of the wheel and have a rotation gap with the outer side of the wheel. The wheel cavity cover completely or completely covers the upper part of the wheel cavity.

[0031] Compared with the prior art, the present invention has the following advantages:

[0032] This invention redesigns the traditional front wheel end sealing structure as a waterproof bearing. Through the center of gravity arrangement and traction structure, the wheel cavity cover plate maintains a constant state of motion. A torque sensor collects the torque of the connecting rod and issues a warning when the torque exceeds the design value, thus solving the problem of bearing aging and friction changes. The torque sensor and millimeter-wave radar transmit near-wheel compartment environmental information and connecting rod torque information to the vehicle control unit, controlling the adjustment of water pressure and volume of the cleaning device nozzles to solve the cleaning problem inside the wheel cavity. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the front wheel cavity sealing device of the present invention.

[0034] Figure 2 This is a schematic diagram of the front wheel cavity sealing system of the present invention.

[0035] Figure 3 This is a schematic diagram showing the connection positions of the vehicle front axle, waterproof bearing, and connecting device according to the present invention.

[0036] Figure 4 This is a schematic diagram showing the connection between the vehicle front axle, waterproof bearing, connecting device, and front wheel according to the present invention.

[0037] In the picture:

[0038] 1. Sealing device; 1.1. Waterproof bearing; 1.2. Connecting device; 1.21. Cylindrical base; 1.22. Connecting rod; 1.23. Connecting plate; 1.3. Wheel cavity cover; 1.31. Arc-shaped missing part; 2. Traction device; 2.1. Retractable flexible material; 2.2. Fixing bracket; 2.3. Material box; 3. Torque detection device; 4. Vehicle front axle; 5. Cleaning device; 5.1. Water tank; 5.2. High-pressure nozzle; 6. Front wheel. Detailed Implementation

[0039] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention. Furthermore, it should be noted that, for ease of description, only the parts related to the present invention are shown in the accompanying drawings, not all of them.

[0040] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0041] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0042] The following combination Figure 1 , Figure 2 , Figure 3 , Figure 4 The present invention will be described in conjunction with the embodiments:

[0043] Example 1:

[0044] A front wheel cavity sealing device, applied to the front of the vehicle body and the front wheels, see Figure 1 As shown, the device includes a sealing device 1, a traction device 2, and a torque detection device 3. The sealing device 1 includes a waterproof bearing 1.1, a connecting device 1.2, and a wheel cavity cover plate 1.3. The waterproof bearing 1.1 is fixedly connected to the wheel cavity cover plate 1.3 through the connecting device 1.2. The torque detection device 3 is clamped and fixed between the connecting device 1.2 and the wheel cavity cover plate 1.3 to detect the torque information of the connecting device 1.2. The traction device 2 includes a retractable flexible material 2.1. One end of the retractable flexible material 2.1 is fixedly connected to the wheel cavity cover plate 1.3, and the other end is fixedly connected to the front of the vehicle body to realize that the cover plate turns with the front wheel and is decoupled from the rolling of the front wheel.

[0045] The wheel cavity cover 1.3 is a non-complete circular cover, and its overall shape matches the front wheel, including an arc-shaped missing part 1.31, which is located at the lower part of the wheel cavity cover 1.3.

[0046] The torque detection device 3 includes a patch torque sensor.

[0047] The torque detection device 3 includes a patch piezoelectric torque sensor.

[0048] The connecting device 1.2 includes a cylindrical base 1.21, a connecting rod 1.22, and a connecting plate 1.23. The cylindrical base 1.21 is fixedly connected to the inner ring of the waterproof bearing 1.1. The lower end of the connecting rod 1.22 is fixedly connected to the center of the cylindrical base 1.21, and its upper end is fixedly connected to the lower end face of the connecting plate 1.23. The connecting plate 1.23 is provided with a threaded connection hole. The center of the wheel cavity cover plate 1.3 is provided with a matching threaded connection hole. The connecting plate 1.23 is threadedly fixedly connected to the inner surface of the wheel cavity cover plate 1.3. The patch-type piezoelectric torque sensor is threadedly clamped and fixed between the connecting plate 1.23 and the inner surface of the wheel cavity cover plate 1.3.

[0049] The traction device 2 also includes a fixed bracket 2.2 and a material box 2.3. The fixed bracket 2.2 is fixedly connected to the front of the vehicle body. The material box 2.3 includes a drum, which is fixedly connected inside the material box 2.3. The material box 2.3 is fixedly connected to the inside of the wheel cavity cover plate 1.3. One end of the retractable flexible material 2.1 is fixed to the fixed bracket 2.2, and the other end is fixedly connected to the drum. The retractable flexible material 2.1 can be pulled out or retracted into the material box 2.3.

[0050] Example 2:

[0051] The present invention also provides a front wheel cavity sealing system, see Figure 2 As shown, it includes two of the aforementioned front wheel cavity sealing devices, as well as a vehicle front axle 4, two cleaning devices 5, two radar detection units, and a vehicle controller. Figure 3 As shown, the outer sides of the two ends of the front axle 4 of the vehicle are provided with circular grooves. The outer ring of the waterproof bearing 1.1 is fixedly connected to the circular grooves by interference fit. The cleaning device 5 is used to clean the inside of the wheel cavity. The radar detection unit includes a millimeter-wave radar for detecting changes in the mudguard profile. The torque detection device 3, the cleaning device 5 and the radar detection unit are electrically connected to the vehicle controller.

[0052] Each cleaning device 5 includes a water tank 5.1, a high-pressure nozzle 5.2, a high-pressure water pump, and a nozzle controller. The water tank 5.1 is connected to the inlet of the high-pressure water pump through a water supply pipeline. The outlet of the high-pressure water pump is connected to the high-pressure nozzle 5.2 through a pipeline. The high-pressure water pump is electrically connected to the nozzle controller, and the nozzle controller is electrically connected to the vehicle controller.

[0053] Example 3:

[0054] The present invention also provides a cleaning control method for a front wheel cavity sealing system, which is applied to the aforementioned front wheel cavity sealing system, and the specific steps include:

[0055] When the wheel turns, the retractable flexible material 2.1 stretches the wheel cavity cover 1.3 accordingly. The driver selects the nozzle control mode. If the manual cleaning program is selected, the vehicle controller immediately sends information to the nozzle controller of the cleaning device 5. The nozzle controller sends a signal to the high-pressure water pump, the high-pressure water pump starts to work, and the high-pressure nozzle 5.2 opens to clean the mudguard.

[0056] If automatic control is selected, the millimeter-wave radar detects the outline of the mudguard and sends the information to the vehicle controller. When the vehicle controller determines that the outline of the mudguard has changed and cleaning is required, it sends information to the nozzle controller of the cleaning device 5. The nozzle controller sends a signal to the high-pressure water pump, the high-pressure water pump starts working, and the high-pressure nozzle 5.2 opens to clean the mudguard. If the vehicle controller determines that the outline of the mudguard has not changed and cleaning is not required, it does not send information and the high-pressure nozzle 5.2 does not start.

[0057] Example 4:

[0058] The present invention also provides a vehicle, including the aforementioned front wheel cavity sealing system, and further including two front wheels 6, which are fixed to the corresponding front axle outer wheel hub bearing positions by wheel hub bolts. Figure 4 As shown, the connecting rod 1.22 passes through the center hole of the wheel hub, the connecting plate 1.23 and the wheel cavity cover plate 1.3 are exposed on the outside of the wheel and have a rotation gap with the outer side of the wheel, the two cleaning devices 5 are respectively set on both sides of the frame and the high pressure nozzles face the mudguards, the two radar detection units are respectively deployed on the left and right protection areas of the vehicle, and the vehicle controller is set inside the vehicle.

[0059] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A front wheel cavity sealing device, applied to the front of the vehicle body and the front wheels, characterized in that, The device includes a sealing device (1), a traction device (2), and a torque detection device (3). The sealing device (1) includes a waterproof bearing (1.1), a connecting device (1.2), and a wheel cavity cover plate (1.3). The waterproof bearing (1.1) is fixedly connected to the wheel cavity cover plate (1.3) through the connecting device (1.2). The torque detection device (3) is clamped and fixed between the connecting device (1.2) and the wheel cavity cover plate (1.3) for detecting the torque information of the connecting device (1.2). The traction device (2) includes a retractable flexible material (2.1). One end of the retractable flexible material (2.1) is fixedly connected to the wheel cavity cover plate (1.3), and the other end is fixedly connected to the front of the vehicle body for realizing that the cover plate turns with the front wheel and is decoupled from the front wheel rolling.

2. The front wheel cavity sealing device according to claim 1, characterized in that, The wheel cavity cover (1.3) is a non-complete circular cover, and its overall shape matches the front wheel, including an arc-shaped missing part (1.31), and the arc-shaped missing part (1.31) is located at the lower part of the wheel cavity cover (1.3).

3. The front wheel cavity sealing device according to claim 1, characterized in that, The torque detection device (3) includes a patch torque sensor.

4. The front wheel cavity sealing device according to claim 3, characterized in that, The torque detection device (3) includes a patch piezoelectric torque sensor.

5. The front wheel cavity sealing device according to claim 4, characterized in that, The connecting device (1.2) includes a cylindrical base (1.21), a connecting rod (1.22), and a connecting plate (1.23). The cylindrical base (1.21) is fixedly connected to the inner ring of the waterproof bearing (1.1). The lower end of the connecting rod (1.22) is fixedly connected to the center of the cylindrical base (1.21), and its upper end is fixedly connected to the lower end face of the connecting plate (1.23). The connecting plate (1.23) is provided with a threaded connection hole. The center of the wheel cavity cover plate (1.3) is provided with a matching threaded connection hole. The connecting plate (1.23) is threadedly fixedly connected to the inner surface of the wheel cavity cover plate (1.3). The patch-type piezoelectric torque sensor is threadedly clamped and fixed between the inner surfaces of the connecting plate (1.23) and the wheel cavity cover plate (1.3).

6. The front wheel cavity sealing device according to claim 1, characterized in that, The traction device (2) also includes a fixed bracket (2.2) and a material box (2.3). The fixed bracket (2.2) is fixedly connected to the front of the vehicle body. The material box (2.3) includes a drum, which is fixedly connected inside the material box (2.3). The material box (2.3) is fixedly connected to the inside of the wheel cavity cover plate (1.3). One end of the retractable flexible material (2.1) is fixed to the fixed bracket (2.2), and the other end is fixedly connected to the drum. The retractable flexible material (2.1) can be pulled out or retracted into the material box (2.3).

7. A front wheel cavity sealing system, characterized in that, The device includes two front wheel cavity sealing devices as described in any one of claims 1-6, and also includes a vehicle front axle (4), two cleaning devices (5), two radar detection units and a vehicle controller. The outer side of the two shaft ends of the vehicle front axle (4) is provided with a circular groove. The outer ring of the waterproof bearing (1.1) is fixedly connected to the circular groove by an interference fit. The cleaning device (5) is used to clean the inside of the wheel cavity. The radar detection unit includes a millimeter-wave radar for detecting changes in the mudguard profile. The torque detection device (3), the cleaning device (5) and the radar detection unit are electrically connected to the vehicle controller.

8. The front wheel cavity sealing system according to claim 7, characterized in that, Each cleaning device (5) includes a water tank (5.1), a high-pressure nozzle (5.2), a high-pressure water pump, and a nozzle controller. The water tank (5.1) is connected to the inlet of the high-pressure water pump through a water supply pipeline. The outlet of the high-pressure water pump is connected to the high-pressure nozzle (5.2) through a pipeline. The high-pressure water pump is electrically connected to the nozzle controller, and the nozzle controller is electrically connected to the vehicle controller.

9. A cleaning control method for a front wheel cavity sealing system, characterized in that, The application of the front wheel cavity sealing system as described in claim 7 or 8 includes the following specific steps: When the wheel turns, the retractable flexible material (2.1) stretches the wheel cavity cover (1.3) and moves accordingly. The driver selects the nozzle control mode. If the manual cleaning program is selected, the vehicle controller immediately sends information to the nozzle controller of the cleaning device (5). The nozzle controller sends a signal to the high-pressure water pump, the high-pressure water pump starts to work, and the high-pressure nozzle (5.2) opens to clean the mudguard. If automatic control is selected, the millimeter-wave radar detects the outline of the mudguard and sends the information to the vehicle controller. When the vehicle controller determines that the outline of the mudguard has changed and needs cleaning, it sends information to the nozzle controller of the cleaning device (5). The nozzle controller sends a signal to the high-pressure water pump, the high-pressure water pump starts to work, the high-pressure nozzle (5.2) opens, and the mudguard is cleaned. If the vehicle controller determines that the outline of the mudguard has not changed and does not need cleaning, it does not send information and the high-pressure nozzle (5.2) does not start.

10. A vehicle, characterized in that, The system includes the front wheel cavity sealing system as described in claim 7 or 8, and also includes two front wheels (6), which are fixed to the corresponding front axle outer wheel bearing positions by wheel hub bolts. The connecting rod (1.22) passes through the center hole of the wheel hub. The connecting plate (1.23) and the wheel cavity cover plate (1.3) are exposed on the outer side of the wheel and have a rotation gap with the outer side of the wheel. Two cleaning devices (5) are respectively set on both sides of the frame with the high-pressure nozzle facing the mudguard. Two radar detection units are respectively set on the left and right protection areas of the vehicle. The vehicle controller is set inside the vehicle.

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