A brake wear particle collection device based on a whole vehicle

Abstract

The present application relates to the technical field of automobile testing equipment, and in particular to a brake wear particle collection device based on a whole vehicle, which includes a process hub, a sealing mechanism, a collection mechanism and a detection system; the process hub is installed on the axle of the test vehicle to replace the original hub of the test vehicle; the sealing mechanism is connected between the process hub and the collection mechanism, including a brush seal, a pressure plate and a sealing seat, the pressure plate and the sealing seat are connected as a whole by bolts, the brush seal is arranged between the sealing seat and the pressure plate, the sealing seat is connected to the process hub and the sealing seat does not rotate with the process hub, the diameter of the brush seal is greater than the diameter of the process hub runway, and the middle gap is 0-0.3mm; the collection mechanism is used to collect brake wear particles; the detection system is used to detect the brake wear particles collected by the collection mechanism and obtain the detection results. The present application has the effect of isolating the brake wear particles from the external environment to ensure that the brake wear particles can be effectively captured and collected.

Description

Technical Field

[0001] The present application relates to the field of automobile testing equipment technology, and in particular to a brake wear particle collection device based on a whole vehicle. Background Art

[0002] With the global awareness of environmental protection and the increasing attention to air quality, governments have introduced stricter emission standards to address automobile emissions. On November 10, 2022, the European Commission published a proposal for the "European Stage 7 Emission Standard" (Euro 7) on its official website, setting additional restrictions on brake wear particulate matter emissions from all vehicles for the first time.

[0003] At the European Parliament in mid-March 2024, the EU officially adopted the new Euro 7 emission standard. The new regulations will be officially implemented on light passenger vehicles from July 2025, and will cover heavy vehicles in July 2027, and all types of vehicles in July 2031. China's emission standards, from National 1 to National VIb, have always been at the forefront of the world. The National VII Standard Launch Meeting led by the Motor Vehicle Emission Monitoring Center of the Institute of Environmental Sciences was held in Chengdu in early April. The National VII Standard is expected to follow the European Stage VII emission standards and will set limits on brake wear particulate matter emitted by vehicles to further reduce air pollution and protect the environment and public health.

[0004] At present, the industry has made significant progress in the research and control of automobile exhaust emissions, but the research on brake wear particulate matter emissions is relatively lagging behind, especially the research on the collection equipment and test methods for brake wear particulate matter emissions is still in its infancy. Brake dynamometer testing, road actual measurement methods, and chassis dynamometer-based testing methods sealed with air curtain devices are methods used by researchers. Brake dynamometer testing lacks the complexity under actual driving conditions, it is difficult to reflect the interaction of the whole vehicle system, the collection method and the evaluation of the effect of measures to reduce brake wear particulate matter are limited, and the cost of brake dynamometer equipment is high. Actual road testing cannot eliminate the interference of other interference sources and cannot accurately present the transient emission characteristics of particulate matter. Therefore, the chassis dynamometer-based testing method sealed with an air curtain device is relatively widely used. However, in actual tests, the air curtain device seal cannot form a complete air curtain due to the obstruction of the spokes. When the wheel rotates at high speed, there will be sealing problems, and the particles in the external environment will enter the collection tooling, resulting in a decrease in the purity of the collected brake wear particles, which in turn affects the accuracy of the experiment. Summary of the invention

[0005] In order to isolate brake wear particles from the external environment and ensure that brake wear particles can be effectively captured and collected, the present application provides a brake wear particle collection device based on a whole vehicle.

[0006] The present application provides a vehicle-based brake wear particle collection device that adopts the following technical solution:

[0007] A brake wear particle collection device based on a whole vehicle, comprising a process hub, a sealing mechanism, a collection mechanism and a detection system;

[0008] The process wheel hub is installed on the axle of the test vehicle to replace the original wheel hub of the test vehicle;

[0009] The sealing mechanism is connected between the process hub and the collection mechanism, and comprises a brush seal, a pressure plate and a sealing seat, wherein the pressure plate is mounted on the sealing seat, the brush seal is arranged between the sealing seat and the pressure plate, the sealing seat is connected to the process hub and the sealing seat does not rotate with the process hub, and the diameter of the brush seal is greater than the diameter of the process hub;

[0010] The collecting mechanism is used to collect brake wear particles;

[0011] The detection system is used to detect the brake wear particles collected by the collection mechanism and obtain the detection result.

[0012] By adopting the above technical solution, first of all, a brush seal is used. The brush seal can form an irregular flow channel, allowing the fluid to flow irregularly, forming a self-sealing effect, and achieving a sealing effect. Secondly, because the brush seal is set between the sealing seat and the pressure plate, a high-density but flexible sealing barrier is formed between the rotating part and the stationary part through dense brush wires, which effectively reduces the leakage of the fluid and ensures the sealing effect. Finally, the process hub, brush seal and sealing seat form a whole, avoiding direct contact between the collection mechanism and the process hub, reducing the possibility of unstable braking and damage to the sealing under rigid connection conditions, and can more realistically simulate the vehicle braking process to ensure the accuracy of the experiment.

[0013] Optionally, an annular runway is formed on the process hub, and the runway is arranged on a side of the process hub close to the collection mechanism. The runway is located at a position where the outer side of the hub contacts the spokes, and the diameter of the runway is the same as the diameter of the process hub.

[0014] By adopting the above technical solution, the brush seal, the runway and the process hub form a whole, and the vibration of the process hub has no effect on the concentricity of the brush seal and the runway, effectively solving the problems of poor sealing and safety caused by the vibration of the process hub.

[0015] Optionally, a dust cover is further included, wherein the dust cover is arranged on the inner side wall of the process hub and the dust cover is annular.

[0016] By adopting the above technical solution, when collecting brake wear particles, the dust cover can significantly reduce the amount of particles entering from other parts and improve the accuracy of the detection results.

[0017] Optionally, a plurality of spokes are arranged on the process hub, and the spokes are distributed in a ring shape, each of the spokes has a small area and has an inclination angle with the process hub.

[0018] By adopting the above technical solution, the influence of background particles can be significantly reduced and the efficiency and accuracy of the acquisition system can be improved.

[0019] Optionally, a wear-resistant layer is provided on a side of the runway close to the brush seal.

[0020] By adopting the above technical solution, the brush seal can be prevented from scratching the runway during operation to generate particles, thereby affecting the test effect, and the friction loss of the brush seal can be reduced.

[0021] Optionally, the collection mechanism includes a gas collecting hood and a sampling tube, the gas collecting hood is connected to the sampling tube, and one end of the gas collecting hood away from the sampling tube is connected to the process hub through the sealing mechanism.

[0022] By adopting the above technical solution, brake wear particles are collected through the gas collection hood and the sampling tube in sequence, and the collection efficiency is high.

[0023] Optionally, the gas collecting hood is conical, and its diameter gradually increases from an end close to the sampling tube to an end far from the sampling tube.

[0024] The adoption of the above technical solution helps to guide and concentrate the airflow and improve the collection efficiency.

[0025] Optionally, a connecting hose is also included, and the connecting hose is connected between the sealing seat and the air collecting hood.

[0026] By adopting the above technical solution, the sealing performance is further improved and the possibility of external particles entering the collection mechanism is reduced.

[0027] Optionally, the detection system includes a control unit, a data acquisition unit, a particle measurement unit and a data remote transmission unit;

[0028] The control unit is used for data acquisition and actuator control;

[0029] The data acquisition unit corrects the test results through multiple sensors;

[0030] The particle measurement unit is used to analyze brake wear particles;

[0031] The data remote transmission unit is used for real-time collection, transmission, storage and access of data.

[0032] By adopting the above technical solution and utilizing the cooperation of various units, the detection efficiency is improved on the one hand, and the accuracy of the detection result is improved on the other hand.

[0033] Optionally, a movable centering mechanism is also included, which is used to adjust the collection mechanism in three spatial dimensions and fix the sealing seat to prevent the sealing seat from moving.

[0034] By adopting the above technical solution, both rough positioning and fine-tuning can be achieved to achieve extremely high centering accuracy, precise centering and positioning, and extremely high flexibility.

[0035] In summary, the present application includes at least one of the following beneficial technical effects:

[0036] 1. This application provides a brake wear particle collection device based on the whole vehicle, in which the brush seal and the runway are designed as a whole. The runway extends from the wheel hub, and the brush seal has a pressure plate, a bearing, and a sealing seat connected as a whole. The sealing seat and the wheel hub cam are connected by a bearing. In this way, the brush seal, the runway, and the wheel hub form a whole. The vibration of the wheel hub does not affect the concentricity of the brush seal and the runway at all, which effectively solves the problem of poor sealing and safety caused by the vibration of the wheel hub, and can more realistically simulate the vehicle braking process to ensure the accuracy of the experiment;

[0037] 2. In this application, a process wheel hub is provided, which achieves more efficient particle collection and better aerodynamic characteristics by replacing the original wheel hub of the vehicle. The core advantage of this process wheel hub design is the addition of an inner dust cover, and the outer spoke fan ring is three-dimensional, small in area, special inclination angle, and brush runway design, which can significantly reduce the impact of background particles and improve the efficiency and accuracy of the collection system;

[0038] 3. The present application also provides a movable centering mechanism, which mainly includes a lockable universal wheel, a trolley frame, a mounting plate and a three-dimensional adjustment mechanism, allowing fine adjustment in three spatial dimensions (X, Y, and Z axes). The design of the mechanism can achieve both rough positioning and fine adjustment to achieve extremely high centering accuracy, precise centering and positioning, and has extremely high flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is an overall schematic diagram of the brake wear particle collection device based on the whole vehicle in this application;

[0040] Figure 2 This is a schematic diagram of the installation of a brake wear particle collection device based on a whole vehicle in this application;

[0041] Figure 3 It is a schematic diagram of the structure of the process hub in this application;

[0042] Figure 4 is a front view of the process hub in this application;

[0043] Figure 5 It is a structural schematic diagram of the sealing mechanism in this application;

[0044] Figure 6 is an installation cross-sectional view of the sealing mechanism in the present application;

[0045] Figure 7 This is a schematic diagram of the installation of the movable centering mechanism and the collection mechanism in this application.

[0046] Explanation of the reference numerals in the accompanying drawings: 1. process hub; 2. sealing mechanism; 21. brush seal; 22. pressure plate; 23. sealing seat; 24. bearing; 3. collection mechanism; 31. gas collecting hood; 32. sampling tube; 4. spokes; 5. dust cover; 6. brake; 7. runway; 8. connecting hose; 9. movable centering mechanism; 91. lockable universal wheel; 92. trolley frame; 93. mounting plate; 94. three-dimensional adjustment mechanism. DETAILED DESCRIPTION

[0047] The following is combined with Figure 1-7 This application is described in further detail.

[0048] The present application embodiment discloses a brake wear particle collection device based on a whole vehicle, referring to Figure 1 and Figure 2 The brake wear particle collection device based on the whole vehicle includes a process wheel hub 1, a sealing mechanism 2, a collection mechanism 3 and a detection system (not shown in the figure). The process wheel hub 1 is installed on the axle of the test vehicle to replace the original wheel hub of the test vehicle. The sealing mechanism 2 is connected between the process wheel hub 1 and the collection mechanism 3, and the sealing mechanism 2 and the process wheel hub 1 are connected in one piece. The sealing mechanism 2 adopts a brush seal. The collection mechanism 3 is used to collect brake wear particles. The detection system is used to detect the brake wear particles collected by the collection mechanism 3 and obtain the detection results.

[0049] During installation, the process hub 1 is installed on the axle to replace the original hub, and then the sealing mechanism 2 and the collection mechanism 3 are connected in sequence. First, a brush seal is used. The brush seal structure can form an irregular flow channel inside, allowing the fluid to flow irregularly, forming a self-sealing effect, and achieving a sealing effect. At the same time, the sealing mechanism 2 and the process hub 1 are connected in an integrated manner, avoiding direct contact between the collection mechanism 3 and the process hub 1, reducing the possibility of unstable braking and damage to the sealing under rigid connection conditions, and can more realistically simulate the vehicle braking process to ensure the accuracy of the experiment.

[0050] Specifically, refer to Figure 3 and Figure 4 , a plurality of spokes 4 are arranged on the process hub 1, and each spoke 4 is evenly spaced and fan-shaped. In this embodiment, each spoke 4 has a small area, which can provide a larger space for the brake wear particles to pass through, so as to facilitate the collection of the brake wear particles. At the same time, the spoke 4 and the process hub 1 are inclined at an angle of 5° from the inner wall of the hub along the spokes to gradually tilt outward (inward), so that the airflow is guided to gather the particles in the middle of the flow channel, which can provide better aerodynamic characteristics and improve the efficiency and accuracy of the collection system.

[0051] Further, refer to Figure 3 and Figure 4 The process hub 1 is provided with a dust cover 5, which is arranged on the inner side wall of the process hub 1, is annular, and is installed on the side of the rear end of the brake pad away from the sealing mechanism 2. When collecting brake wear particles, the dust cover 5 can significantly reduce the infiltration of particles from other parts, thereby improving the accuracy of the detection results.

[0052] In particular, refer to Figure 3 and Figure 4 The process hub 1 is formed with an annular raceway 7, which is arranged on the side of the process hub 1 close to the collecting mechanism 3, and is located at the position where the outer side of the hub contacts the spoke, and the diameter of the raceway 7 is the same as the diameter of the process hub 1. The design of the annular raceway 7 facilitates the connection of the sealing mechanism 2 and improves the sealing performance.

[0053] In this embodiment, in order to eliminate the possible impact of replacing the wheel hub, a strategy of arranging a process wheel hub 1 on each side of the vehicle is adopted. This symmetrical arrangement well maintains the balance and stability of the vehicle.

[0054] Reference Figure 5 and Figure 6 The sealing mechanism 2 includes a brush seal 21, a pressure plate 22 and a sealing seat 23. The pressure plate 22 and the sealing seat 23 are connected as a whole by bolts. The brush seal 21 is arranged between the sealing seat 23 and the pressure plate 22. The sealing seat 23 is connected to the process hub 1 and the sealing seat 23 does not rotate with the process hub 1. The diameter of the brush seal 21 is larger than the diameter of the process hub 1, that is, the diameter of the brush seal 21 is larger than the diameter of the runway 7 (the gap between the brush seal 21 and the runway 7 is preferably 0.3mm). In this way, the brush seal 21 can form an irregular flow channel, allowing the fluid to flow irregularly, forming a self-sealing effect, and achieving a sealing effect. Secondly, since the brush seal 21 is arranged between the sealing seat 23 and the pressure plate 22, a high-density but flexible sealing barrier is formed between the rotating part and the stationary part through dense brush filaments, which effectively reduces the leakage of the fluid and ensures the sealing effect.

[0055] The pressure plate 22 can be connected to the sealing seat 23 by screws, and the sealing seat 23 can be connected to the axle of the vehicle by bearings 24, so that the brush seal 21, the runway 7 and the process wheel hub 1 form a whole. Since the automobile tire is flexible, axial and radial runouts occur during operation, especially when braking suddenly, the runout can reach as much as 30mm. Through the integrated design, the runout of the process wheel hub 1 does not affect the concentricity of the brush seal 21 and the runway 7 at all, effectively solving the loose sealing and safety problems caused by the runout of the process wheel hub 1. At the same time, only one alignment is required during the initial installation, which saves time and effort and greatly improves the efficiency of the test.

[0056] It should be noted that the flexibility of the brush seal 21 allows them to adapt to axial and radial displacements, while the inclined brush design helps to reduce the contact pressure with rotating parts, thereby reducing wear and extending the life of the seal. While maintaining efficient sealing performance, the brush seal body also has a certain degree of self-healing properties, can adapt to axial thermal expansion or vibration, and maintain stable sealing performance.

[0057] Due to the instantaneous contact that may be caused by the centering deviation, in order to increase the wear resistance of the sealing runway 7, a wear-resistant layer is provided on the side of the runway 7 close to the brush seal 21 (a layer of wear-resistant material is sprayed on the surface of the runway 7) to prevent the brush seal 21 from being scratched during operation and thus generating particulate matter, thereby affecting the test result, and at the same time reducing the friction loss of the brush wire of the brush seal 21.

[0058] Specifically, refer to Figure 2 and Figure 7 The collection mechanism 3 includes an air collecting hood 31 and a sampling tube 32. The air collecting hood 31 and the sampling tube 32 are connected. One end of the air collecting hood 31 away from the sampling tube 32 is connected to the process hub 1 through the sealing mechanism 2. The brake wear particles are collected through the air collecting hood 31 and the sampling tube 32 in turn, and the collection efficiency is high.

[0059] Of course, refer to Figure 5 and Figure 6 In order to ensure the sealing of the connection, a connecting hose 8 is connected between the sealing seat 23 and the gas collecting cover 31, and the connecting hose 8 is covered on the sealing mechanism 2. The connecting hose 8 is used to further improve the sealing, reduce the possibility of external particles entering the collecting mechanism 3, and offset the influence of the vibration of the process hub 1 on the collecting mechanism 3.

[0060] The gas collecting hood 31 is conical, and its diameter gradually increases from the end close to the sampling tube 32 to the end far from the sampling tube 32. This helps to guide and concentrate the airflow and improve the collection efficiency. In this embodiment, the inner surfaces of the gas collecting hood 31 and the sampling tube 32 are electropolished, which effectively reduces the adhesion of particles on the inner surfaces and ensures the accuracy of the collected data.

[0061] It should be noted that the position and layout of the sampling tube 32 are optimized through fluid dynamics simulation. The simulation analysis takes into account the velocity distribution, pressure changes, and behavior of particles in the airflow, ensuring that the sampling tube 32 can be located at the best position in the airflow to capture representative samples. This can optimize the airflow dynamics, reduce sampling errors, and ensure the accuracy and repeatability of the collected data.

[0062] In this embodiment, refer to Figure 7 A movable centering mechanism 9 is also provided, which can realize rough positioning and fine adjustment to achieve extremely high centering accuracy, realize precise centering and positioning, and has extremely high flexibility.

[0063] Specifically, refer to Figure 7 The movable centering mechanism 9 includes a lockable universal wheel 91, a trolley frame 92, a mounting plate 93 and a three-dimensional adjustment mechanism 94. The trolley frame 92 is mounted on the lockable universal wheel 91, and a plurality of lockable universal wheels 91 are provided. The three-dimensional adjustment mechanism 94 is mounted on the trolley frame 92, and the mounting plate 93 is mounted on the three-dimensional adjustment mechanism 94. The sampling tube 32 is connected to the mounting plate 93 through a U-shaped card. According to different vehicles, the position of the sampling tube 32 can be adjusted by the three-dimensional adjustment mechanism 94 to ensure the centering.

[0064] In this embodiment, the three-dimensional adjustment mechanism 94 allows adjustment in three spatial dimensions (X, Y, and Z axes), and the specific structure will not be described in detail.

[0065] The detection system includes a control unit, a data acquisition unit, a particle measurement unit and a data transmission unit. The cooperation of each unit can improve the detection efficiency on the one hand and the accuracy of the detection result on the other.

[0066] The control unit includes the measurement and control module, measurement and control software, industrial computer, display, independent control cabinet and uninterruptible power supply (UPS). The measurement and control module is the core, responsible for data acquisition and actuator control. The measurement and control software is based on the programming environment and realizes a multi-threaded operating platform. It can also run on the operating platform. It can freely communicate with hardware, manage parameters, signal transmission, post-process signals, etc., as well as process storage / conversion signals, process business logic and execute user scripts.

[0067] It should be noted that the measurement and control software is browser-based and can therefore be operated by any authorized Internet device in the network. The operations in the browser window are divided into many clear and intuitive widgets. Authorized operators can view the current status of the test bench at any time, control the operation of the equipment, and manage its parameters and signals.

[0068] The data acquisition unit includes multiple sensors (pressure sensor, temperature sensor, humidity sensor, wind speed sensor, flow sensor). By collecting these environmental variables, the test results can be effectively corrected to eliminate the influence of different environmental variables on the results. And the system can automatically calculate the particle mixed flow velocity and isokinetic tracking flow according to the variable value to ensure the collection efficiency.

[0069] The particle measurement unit includes an aerodynamic particle size spectrometer and an automatic smoke (gas) tester. The aerodynamic particle size spectrometer is responsible for collecting and analyzing the aerodynamic particle size and number distribution of wear particles. The aerodynamic particle size spectrometer provides high-resolution, real-time aerodynamic particle size measurement from 0.5-20μm. The aerodynamic particle size spectrometer can simultaneously measure the equivalent optical particle size of 0.37-20μm using light scattering intensity. By providing two different data for each particle. The aerodynamic particle size spectrometer uses patented dual-peak optical system technology to achieve unparalleled classification accuracy. The aerodynamic particle size spectrometer also designs an acceleration nozzle and improves signal processing functions. These improvements improve the measurement efficiency of small particle size, enhance the accuracy of mass spectrum distribution, and effectively eliminate the counting effect of false background signals.

[0070] The automatic smoke (gas) tester is responsible for collecting the weight of particulate matter in one test cycle. The automatic smoke (gas) tester uses the isokinetic sampling principle to measure particulate matter. During the entire sampling process, the speed at which the particulate-containing gas enters the sampling nozzle is equal to the gas speed at that point in the delivery pipe to ensure that the sample concentration is equal to the actual concentration.

[0071] The data transmission unit includes a data transmission module (DTU), a cloud computing platform and a mobile application (App), which can realize real-time data collection, transmission, storage and access. The data transmission module is responsible for converting the Modbus protocol of the measurement and control unit to the MQTT protocol, and uploading it to the cloud securely and efficiently through the network. The cloud platform provides services for data reception, storage and processing. The mobile application (App) provides users with a convenient interface for real-time viewing and management of collected data.

[0072] In this embodiment, the brake wear particle collection device based on the whole vehicle can be used to collect brake wear particles of different wheel hub sizes. It can be used not only in traditional fuel vehicles but also in new energy vehicles. It has a wide range of applications and strong practicality.

[0073] The implementation principle of the brake wear particle collection device based on the whole vehicle in the embodiment of the present application is as follows: first, the dust cover 5 can be used to resist the amount of particles entering the bottom of the car, and at the same time, a brush-type integrated seal is used to isolate the brake wear particles from the external environment, so that the brake wear particles can be effectively captured and collected, and the particles in the external environment are prevented from entering the collection mechanism 3, which effectively solves the sealing problem under high-speed rotation and improves the collection efficiency and collection purity. Under the action of the brush seal, direct contact between the collection mechanism 3 and the wheel hub is avoided, the occurrence of unstable braking under rigid connection is reduced, and the potential safety hazards caused by tire bouncing are reduced, the safety of the experiment is improved, and the vehicle braking process can be simulated more realistically to ensure the accuracy of the experiment.

[0074] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A brake wear particle collection device based on a whole vehicle, characterized by: It comprises a process hub (1), a sealing mechanism (2), a collection mechanism (3) and a detection system; The process wheel hub (1) is installed on the axle of the test vehicle to replace the original wheel hub of the test vehicle; The sealing mechanism (2) is connected between the process hub (1) and the collection mechanism (3), and comprises a brush seal (21), a pressure plate (22) and a sealing seat (23); the pressure plate (22) is mounted on the sealing seat (23); the brush seal (21) is arranged between the sealing seat (23) and the pressure plate (22); the sealing seat (23) is connected to the process hub (1) and the sealing seat (23) does not rotate with the process hub (1); the diameter of the brush seal (21) is greater than the diameter of the process hub (1); The collecting mechanism (3) is used to collect brake wear particles; The detection system is used to detect the brake wear particles collected by the collection mechanism (3) and obtain the detection result; An annular racetrack (7) is formed on the process hub (1), the racetrack (7) is arranged on a side of the process hub (1) close to the collecting mechanism (3), the racetrack (7) is located at a position where the outer side of the hub contacts the spokes, and the diameter of the racetrack (7) is the same as the diameter of the process hub (1); The collection mechanism (3) comprises an air collecting hood (31) and a sampling tube (32), wherein the air collecting hood (31) and the sampling tube (32) are connected, and an end of the air collecting hood (31) away from the sampling tube (32) is connected to the process hub (1) via the sealing mechanism (2).

2. The brake wear particle collection device based on a whole vehicle according to claim 1 is characterized in that: It also comprises a dust cover (5), which is arranged on the inner side wall of the process hub (1) and is annular in shape.

3. The brake wear particle collection device based on a whole vehicle according to claim 2 is characterized in that: A plurality of spokes (4) are arranged on the process hub (1), each of the spokes (4) is distributed in a ring shape, each of the spokes (4) has a small area and has an inclination angle with the process hub (1).

4. The brake wear particle collection device based on a whole vehicle according to claim 1 is characterized in that: A wear-resistant layer is provided on one side of the runway (7) close to the brush seal (21).

5. The brake wear particle collection device based on a whole vehicle according to claim 1 is characterized in that: The gas collecting hood (31) is conical, and its diameter gradually increases from an end close to the sampling tube (32) to an end far from the sampling tube (32).

6. The brake wear particle collection device based on a whole vehicle according to claim 5 is characterized in that: It also comprises a connecting hose (8), wherein the connecting hose (8) is connected between the sealing seat (23) and the air collecting hood (31).

7. The brake wear particle collection device based on a whole vehicle according to claim 1 is characterized in that: The detection system includes a control unit, a data acquisition unit, a particle measurement unit and a data remote transmission unit; The control unit is used for data acquisition and actuator control; The data acquisition unit corrects the test results through multiple sensors; The particle measurement unit is used to analyze brake wear particles; The data remote transmission unit is used for real-time collection, transmission, storage and access of data.

8. The brake wear particle collection device based on a whole vehicle according to claim 1 is characterized in that: It also includes a movable centering mechanism (9) for adjusting the collection mechanism (3) in three spatial dimensions and fixing the sealing seat (23) to prevent the sealing seat (23) from moving.

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