Comprehensive simulation analyzer for road surface operation

Abstract

The invention discloses a road surface operation comprehensive simulation analyzer, and relates to the technical field of automobile maintenance and detection, and the road surface operation comprehensive simulation analyzer comprises a main box body, a main shaft, an industrial control computer, an illumination and balance indicating device, a simulation roller and a plurality of sensing detection devices. The device provides detection data and reports, provides different solutions in a targeted manner according to the detection data and reports to eliminate various problems occurring in actual operation of the whole vehicle, is comprehensive in function, simple and convenient to operate and convenient and reliable to operate, can provide a detection environment with the road condition the same as that of vehicle driving for a user, truly restores the operation problem of the vehicle condition, and is suitable for popularization and application. Effective detection data and a reliable solution are provided, and the system is suitable for being used by vast maintenance users.

Description

TECHNICAL FIELD

[0001] The application is suitable for the field of automobile maintenance and detection technology, and particularly relates to a road surface running comprehensive simulation analyzer. BACKGROUND

[0002] With the continuous progress of the automobile industry and the rapid development of highway construction, the safety and comfort requirements of automobile driving are also increasingly high. If the quality imbalance and dynamic characteristics of the tire are deviated, abnormal force and torque will be transmitted, which will cause the vehicle to shake and slide sideways when driving at high speed, not only affecting the comfort of driving, but also seriously threatening the safety of driving. The tire is the only contact point between the automobile and the ground. In order to ensure the safety performance requirements of driving, the detection of the actual state of the tire running on the simulated road surface can provide the most real and reliable information feedback. The dynamic balance of the wheel is incorrect, including static imbalance and force imbalance. The vibration generated by force imbalance is 4 times larger than that of static imbalance. After the tire is used for a period of time, the taper formed by the wear of the tire surface will cause the vehicle to slide sideways after positioning. In addition to the wear and shape deviation of the tire surface, which can be found by visual detection, the uniformity and local defects of the rubber layer, steel wire layer and wire layer in the tire will directly cause the vehicle to shake, slide and abnormally tire noise during driving. At present, there is no method and instrument to provide scientific data as a theoretical basis for the existence of these hidden dangers and the maintenance and replacement of the tire. More depends on the intuition and experience of maintenance personnel. The detection of the traditional balancing machine and four-wheel alignment instrument cannot meet the current problems to be solved. SUMMARY

[0003] In order to solve the above problems, that is, to solve the problems proposed in the background, the application provides a road surface running comprehensive simulation analyzer, which comprises a main box body, a main shaft, a high-fidelity road surface simulation unit, an integrated sensing and detection system, and an intelligent control and decision unit.

[0004] The main shaft is rotatably installed on one side of the main box body and is used to install and drive the tire assembly to be detected to rotate.

[0005] The high-fidelity road simulation unit is used to provide real contact and load conditions for the tire. It includes a simulation drum, a simulation drum support, and a driving and pressing mechanism. The simulation drum is installed on the simulation drum support through a simulation drum shaft, the axis of which is parallel to the axis of the main shaft. The first end of the driving and pressing mechanism is connected with the main box body, and the second end is connected with the simulation drum support, which is used to drive the simulation drum support to move closer to or away from the tire on the main shaft, and to apply controllable load to the tire to simulate the driving state of the vehicle under different loads. Preferably, the surface of the simulation drum is treated by sanding process, so that the texture and friction characteristics are highly close to the real road surface.

[0006] The integrated sensing and detection system is used to synchronously collect the physical signals of the tire from multiple dimensions when the high-fidelity road simulation unit is working. The system includes: The mechanical and motion detection module includes a dynamic balance detection device (such as a pressure sensor installed on the main shaft) for detecting the dynamic imbalance value of the tire, a main shaft phase detection device for providing a rotation phase reference, a simulation drum pressure detection device (such as a thrust sensor) for detecting and feeding back the simulation load, a tire lateral force detection device for directly measuring the size and direction of the lateral sliding force generated when the tire rolls, and a running speed detection device for detecting the actual rotation speed of the simulation drum to compensate for the influence of tire deformation.

[0007] The surface and geometric shape detection module includes a tread detection device for continuously scanning the rotating tire tread for 360 degrees to evaluate the uniformity of wear, and a rim roundness detection device for detecting the radial runout and out-of-roundness of the hub.

[0008] The acoustic and auxiliary detection module includes a noise detection device for collecting driving tire noise, a vibration detection sensor for monitoring the vibration caused by tire unevenness, an inner and outer data detection device for obtaining the basic size data of the tire and the hub, and an air pressure detection device for accurately detecting and calibrating the tire pressure.

[0009] The intelligent control and decision unit is electrically connected with the integrated sensing and detection system. It is configured to receive and fuse all data streams from the integrated sensing and detection system, and execute core algorithms based on the fusion analysis results. On the one hand, it generates performance diagnosis reports for individual tires (such as dynamic imbalance, out-of-roundness, lateral force, wear state, internal defect risk, etc.); on the other hand, it dynamically generates installation position and direction optimization matching schemes for all tires of the vehicle to systematically solve the vehicle shaking and side slipping problems caused by individual differences of the tires.

[0010] Furthermore, the tire lateral force detection device includes a simulated roller shaft and at least one pair of lateral force detection springs. One end of each lateral force detection spring is connected to the simulated roller shaft, and the other end is connected to the simulated roller support. When the tire generates lateral force due to factors such as taper, this force is transmitted to the simulated roller shaft through the simulated roller, causing the lateral force detection spring to deform. By measuring this deformation, the magnitude and direction of the lateral force can be accurately quantified.

[0011] Furthermore, the driving and pressurizing mechanism is a cylinder. The cylinder body is mounted inside the main housing via a cylinder mounting shaft, and its piston rod is connected to the simulated roller bracket. The simulated roller bracket is rotatably mounted on a mounting base on the rear side of the main housing via a simulated roller bracket shaft, thus forming a lever mechanism that precisely converts the cylinder's thrust into simulated road pressure on the tire.

[0012] Furthermore, the intelligent control and decision-making unit is configured to execute an optimized fitting algorithm for the wheel hub and tire. This algorithm identifies the high and low points of the geometric shape of both the tire and the wheel hub based on wheel hub data measured by a rim roundness detection device and tire data measured by a tread detection device or vibration detection sensor. Through calculation, it recommends matching the high point area of ​​the tire with the low point area of ​​the wheel hub during installation, thereby offsetting or reducing rotational vibrations caused by component out-of-roundness during assembly.

[0013] Furthermore, the intelligent control and decision-making unit is configured to execute a sideslip force cancellation optimization algorithm. This algorithm, based on the lateral force values ​​and directions of each tire measured by the tire lateral force detection device, calculates the optimal mounting position and orientation combination on the vehicle (especially on the left and right sides of the same axle) for tires whose lateral force values ​​are within acceptable range but whose directions are inconsistent. By canceling out the lateral forces generated by the left and right tires, the potential for vehicle deviation is eliminated or significantly reduced at the vehicle system level.

[0014] Furthermore, it also includes safety protection components, such as tire guards for protecting rotating tires and simulated roller guards for protecting simulated rollers, to ensure operator safety.

[0015] The beneficial technical effects of this invention patent are as follows: By simulating a real road surface with a high-fidelity sand-adhesive roller and combining it with a precisely controllable pressure application mechanism, the tire is placed in a highly simulated load-bearing rolling state during testing. In this state, an integrated multi-source sensing system simultaneously collects multi-dimensional signals such as mechanical, geometric, and acoustic data. The obtained data can truly reflect the comprehensive performance of the tire under actual road conditions, far exceeding the test results under free rotation. Furthermore, the testing device and method are innovative and pioneering.

[0016] By integrating and analyzing multi-dimensional data such as vibration spectrum and noise signal, this instrument can not only detect apparent problems such as dynamic balance, out-of-roundness, and wear of tires, but also help to judge "hidden" risks such as the uniformity of internal tire structure (such as rubber layer) and local defects, providing a scientific diagnostic basis that goes beyond traditional experience judgment.

[0017] It transcends the traditional testing equipment's mere "problem detection" level, proactively providing solutions on "how to solve the problem" through "optimized fitting algorithms" and "lateral slip force cancellation optimization algorithms." For example, it guides the optimal matching and installation of tires and rims, or recommends the best tire rotation scheme for the entire vehicle, preventing and eliminating problems such as vibration and deviation at the system level, thus realizing a complete value loop from testing to maintenance guidance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a rear view of the present invention; Figure 3 This is a flowchart of the simulation analysis process of the present invention; Figure 4 This is a schematic diagram of the spindle described in this invention; Figure 5 This is a schematic diagram of the simulated roller section described in this invention.

[0019] Reference numerals: 1. Main housing; 2. Lead block cover; 3. Steel rim roundness detection device; 4. Industrial control computer; 5. Lighting and balance indicator device; 6. Tire protective cover; 7. Outer data detection device; 8. Simulated roller; 9. Simulated roller protective cover; 10. Tire lateral force detection device; 11. Tire tread detection device; 12. Main shaft; 13. Inner data detection device; 14. Air pressure detection device; 15. Simulated roller support; 16. Noise detection device; 17. Cylinder; 18. Vibration detection sensor; 19. Main shaft phase detection device; 20. Thrust sensor; 21. Cylinder mounting shaft; 22. Simulated roller support mounting base; 23. Simulated roller shaft; 24. Running speed detection device; 25. Side slip force detection spring; 26. Side slip weighing sensor; 27. Simulated roller support shaft. Detailed Implementation

[0020] The following is a reference to the appendix. Figures 1-5 The preferred embodiments of this invention are described below. Those skilled in the art should understand that these embodiments are merely for explaining the technical principles of this invention and are not intended to limit the scope of protection of this invention.

[0021] This invention patent proposes a comprehensive road operation simulation analyzer. The design of this device revolves around the core process of "simulation, detection, analysis, and matching", and its mechanical structure and sensing system are highly coordinated.

[0022] like Figures 1 to 5 As shown, this embodiment provides a comprehensive road surface operation simulation analyzer. Its main structure is based on a robust main housing 1, which serves as the load-bearing frame for the entire device. The main shaft 12 is rotatably mounted on one side of the main housing 1 via bearing seats, and is driven by a motor. It is used to mount the tire assembly and rotate it, and is the core component for simulating tire operation and performing dynamic balance testing.

[0023] The high-fidelity road surface simulation unit is key to creating a realistic testing environment. The simulated roller 8 is mounted on the simulated roller shaft 23 via bearings at both ends, and the simulated roller shaft 23 is supported on the simulated roller bracket 15. The surface of the simulated roller 8 undergoes a special sand-adhesive process, making its roughness and coefficient of friction close to that of a real asphalt or concrete road surface. The lower end of the simulated roller bracket 15 is rotatably mounted on the mounting base 22 on the rear side of the main housing via the simulated roller bracket shaft 27. A cylinder 17 serves as the driving and pressure mechanism; its cylinder body is hinged inside the main housing 1 via a cylinder mounting shaft 21, and the end of its piston rod is connected to the middle of the simulated roller bracket 15. During operation, the industrial control computer 4 controls the piston rod of the cylinder 17 to extend, pushing the simulated roller bracket 15 to rotate around the bracket shaft 27, thereby causing the simulated roller 8 to smoothly press against the rotating tire, simulating the contact and load between the tire and the road surface when a vehicle is in motion. The thrust sensor 20 at the front end of cylinder 17 detects the thrust in real time. The industrial control computer 4 precisely controls the thrust according to the vehicle model and testing requirements, thereby accurately simulating the road contact pressure under different loads.

[0024] An integrated sensing and detection system constitutes the data perception layer of the equipment. In terms of mechanics and motion detection: sensors are mounted on the main shaft 12 to detect changes in centrifugal force generated during tire rotation, thereby calculating dynamic imbalance and phase; the main shaft phase detection device 19 provides a precise angular reference for the tire circumference. Simulated roller pressure is directly detected by the thrust sensor 20. The unique tire lateral force detection device 10 consists of a simulated roller shaft 23, a pair of lateral force detection springs 25, and a lateral force weighing sensor 26. The lateral force detection springs 25 are connected between the roller shaft 23 and the bracket 15. When the tire generates lateral force due to its conicity, the force is transmitted through the roller to the shaft 23, causing elastic deformation of the springs 25. The mounting hole of the lateral force weighing sensor 26 spans the deformation area on the lateral force detection springs. Besides detecting the direction and magnitude of the lateral force, the lateral force weighing sensor 26 can also constrain the lateral deformation of the lateral force detection springs 25, stabilizing the position of the simulated roller 8 supported by the lateral force detection springs 25 at its initial position. When the surface of the tire being tested has a conical surface formed due to wear, and the simulated roller 8 contacts the tire and rotates synchronously with the tire, a lateral slip force is generated along the axial direction of the simulated roller 8. This pulls the simulated roller 8 to produce an axial displacement. This displacement is caused by the deformation of the deformation area of ​​the lateral slip force detection spring 25 installed on both sides of the simulated roller 8, so that the simulated roller 8 moves linearly along the axial direction of the simulated roller 8 in the form of a parallelogram. After the simulated roller 8 separates from the tire being tested, the external force acting on the simulated roller 8 disappears, the deformation of the lateral slip force detection spring 25 disappears, the structure returns to the initial position, the lateral slip force detection process ends, and the industrial control computer 4 gives the detection result. The running speed detection device 24 is installed at the end of the simulated roller 8 to detect its actual rotational speed. The industrial control computer 4 can use this to compensate for the rotational speed deviation caused by the tire pressure deformation, so that the spindle speed more accurately reflects the actual driving speed of the vehicle.

[0025] In terms of surface and geometric inspection: the tread inspection device 11 (combining a line-scan camera and laser scanner) is mounted on the main housing and performs a 360° continuous scan of the rotating tire tread to acquire high-definition images or three-dimensional point cloud data for analyzing wear uniformity and depth. The rim roundness inspection device 3 is also mounted on the main housing to detect the radial runout of the rim. In terms of acoustic and auxiliary inspection: the noise detection device 16 is arranged near the roller to collect rolling noise; the vibration detection sensor 18 is mounted on the simulated roller support shaft 27 to detect vibration signals; the inner and outer data detection devices 7 and 13 are used to quickly obtain basic dimensions such as tire width and diameter; and the tire pressure detection device 14 is used to detect and calibrate tire pressure.

[0026] All sensors are connected to the industrial computer 4, which serves as the intelligent control and decision-making unit. The industrial computer 4 runs dedicated analysis software, and its workflow is as follows: Figure 3As shown: First, clamping and initial tire pressure checks are performed; then, the spindle rotation is started and the rollers are controlled to apply pressure, entering a comprehensive road condition simulation test state; during this process, all sensors simultaneously collect and upload data; the software performs fusion processing and comprehensive analysis on the multi-source data, not only calculating specific parameters such as dynamic balance, out-of-roundness, and lateral force, but also using the spectral characteristics of vibration and noise to help determine the internal uniformity of the tire. Crucially, the software incorporates two intelligent algorithms: one is the "rim-tire optimization fitting algorithm," which optimizes the assembly to reduce vibration by matching the geometric height and low points of the tire and rim; the other is the "lateral slip force cancellation optimization algorithm," which calculates the optimal installation position and direction of the tires on the entire vehicle to cancel out the coaxial lateral forces and eliminate deviation. Finally, all test results, diagnostic conclusions, and optimization schemes are clearly displayed on the industrial control computer screen.

[0027] This instrument is also equipped with a tire protective cover 6 and a simulated roller protective cover 9, which are lowered during testing to ensure safety.

[0028] In summary, this invention, through a mechanical structure that highly simulates real road conditions, a multi-dimensional synchronous sensor network, and an intelligent data fusion decision algorithm, achieves in-depth, comprehensive diagnosis and systematic optimization of tire performance, providing the automotive repair and maintenance industry with a revolutionary, efficient, and accurate testing tool.

[0029] Although the present invention has been described with reference to preferred embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0030] In the description of this invention patent, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention patent. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] Furthermore, it should be noted that, in the description of this invention patent, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention patent according to the specific circumstances.

[0032] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0033] The technical solution of this invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of this invention is obviously not limited to these specific embodiments. Without departing from the principles of this invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions resulting from these changes or substitutions will all fall within the scope of protection of this invention.

Claims

1. A comprehensive simulation and analysis instrument for road operation, characterized in that, include: Main box (1); The main shaft (12) is rotatably mounted on one side of the main housing (1) for mounting and driving the tire assembly to be tested; The high-fidelity road surface simulation unit includes a simulated roller (8), a simulated roller support (15), a simulated roller support shaft (27), and a driving and pressing mechanism. The simulated roller (8) is mounted on the simulated roller support (15) via the simulated roller shaft (23), and its axis is parallel to the axis of the main shaft (12). The first end of the driving and pressing mechanism is connected to the main housing (1), and the second end is connected to the simulated roller support (15), which is used to drive the simulated roller support (15) to move the simulated roller (8) closer to or away from the tire on the main shaft (12) to simulate the load-bearing and contact state of the tire on the road surface. An integrated sensing and detection system is used to simultaneously collect multi-dimensional physical parameters of the tires when the high-fidelity road surface simulation unit is working; The intelligent control and decision-making unit is electrically connected to the integrated sensing and detection system. It is used to receive, fuse and process the data collected by the integrated sensing and detection system, and generate a performance diagnostic report for a single tire and an optimized matching scheme for the installation positions of multiple tires on the whole vehicle based on the fusion analysis results.

2. The road surface operation comprehensive simulation and analysis instrument according to claim 1, characterized in that, The integrated sensing and detection system includes: The mechanical and motion detection module includes: A dynamic balancing detection device, comprising at least two pressure sensors mounted on the main shaft (12) for detecting dynamic imbalance values ​​when the tire rotates; A spindle phase detection device (19) is installed on the spindle (12) to provide a phase reference for the circumferential position of the tire; A simulated roller pressure detection device includes a thrust sensor (20) mounted on the drive and pressure mechanism for detecting and feeding back the simulated load applied to the tire; The tire lateral force detection device (10) includes the simulated roller shaft (23) and at least one pair of lateral force detection springs (25). One end of the lateral force detection spring (25) is connected to the simulated roller shaft (23), and the other end is connected to the simulated roller bracket (15). It is used to detect the magnitude and direction of the lateral sliding force generated when the tire rolls. The running speed detection device (24) is installed on the simulated roller (8) or the simulated roller shaft (23) to detect the actual rotation speed of the simulated roller in order to compensate for the deformation effect of the tire; Surface and geometry detection module, including: A tread detection device (11) is installed on the main housing (1) and faces the main shaft (12) for continuously scanning the tread of a rotating tire in 360 degrees to evaluate the tread wear condition. A steel rim roundness detection device (3) is installed on the main housing (1) and faces the main shaft (12) to detect the roundness error of the wheel hub; The acoustic and auxiliary detection module includes: A noise detection device (16) is set near the simulated roller (8) to collect noise signals generated by the tire during simulated operation; A vibration detection sensor (18) is installed on the shaft (27) of the simulated roller support to detect vibration signals during tire operation; The inner data detection device (13) and the outer data detection device (7) are respectively set on the inner and outer sides of the main shaft (12) to obtain the basic size data of the tire; A tire pressure detection device (14) is installed on the main housing (1) for detecting and calibrating tire pressure.

3. The road surface operation comprehensive simulation analyzer according to claim 2, characterized in that, The tire lateral force detection device (10) also includes a lateral slip weighing sensor (26), which is installed on the lateral force detection spring (25) to accurately quantify the lateral force and constrain the deformation and reset of the lateral force detection spring (25).

4. A comprehensive road surface operation simulation and analysis instrument according to claim 1 or 2, characterized in that, The intelligent control and decision-making unit is configured to execute an optimization fitting algorithm for the wheel hub and the outer tire. Specifically, based on the out-of-round data of the wheel hub detected by the rim roundness detection device (3) and the tire unevenness data detected by the tread detection device (11) or the vibration detection sensor (18), the unit identifies the high and low points of the geometric shape of the tire and the wheel hub, and matches and installs the high point area of ​​the tire with the low point area of ​​the wheel hub through calculation to eliminate the running vibration caused by the out-of-roundness of the assembly.

5. A comprehensive road surface operation simulation and analysis instrument according to claim 1 or 2, characterized in that, The intelligent control and decision-making unit is configured to execute the lateral force cancellation optimization algorithm, specifically: based on the lateral force values ​​and directions of each tire measured by the tire lateral force detection device (10), for tires whose values ​​are within the qualified range, calculate the optimal installation position and direction combination on the whole vehicle, so that the lateral forces of the left and right tires on the same axle cancel each other out at the whole vehicle level, thereby systematically eliminating the hidden danger of vehicle deviation.

6. The comprehensive road operation simulation and analysis instrument according to claim 1, characterized in that, The driving and pressurizing mechanism is a cylinder (17). The cylinder body of the cylinder (17) is installed inside the main housing (1) through the cylinder mounting shaft (21). The piston rod of the cylinder (17) is connected to the simulated roller bracket (15). The simulated roller bracket (15) is rotatably installed on the simulated roller bracket mounting base (22) on the rear side of the main housing through the simulated roller bracket shaft (27).

7. The comprehensive road operation simulation and analysis instrument according to claim 1, characterized in that, The surface of the simulated roller (8) is a rough surface treated with sand to simulate the texture and friction characteristics of a real road surface.

8. The road surface operation comprehensive simulation and analysis instrument according to claim 1, characterized in that, It also includes a tire guard (6) for protecting the rotating tire and a simulated roller guard (9) for protecting the simulated roller (8).

9. A comprehensive road operation simulation and analysis instrument according to claim 2, characterized in that, The steel ring roundness detection device (3) is installed on the main box (1) through the lead block cover (2).

10. A comprehensive road operation simulation and analysis instrument according to claim 1, characterized in that, The intelligent control and decision-making unit is specifically an industrial control computer (4) installed on the main housing (1), which is electrically connected to each detection device in the integrated sensing and detection system and is used for data calculation, detection process control and result display.

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