Wheel assembly detection device and detection method

Abstract

The invention relates to a wheel assembly detection device and a detection method. In the wheel assembly detection device, a positioning and clamping mechanism is used for fixing a wheel assembly to be detected; the inflating mechanism is used for inflating the wheel assembly to preset tire pressure; after inflation of the wheel assembly is completed, the positioning and clamping mechanism drives the wheel assembly to rotate at a preset speed; in the rotating process of the wheel assembly, the appearance size detection mechanism detects the appearance size of the wheel assembly, and the groove depth detection mechanism detects the groove depth of the wheel assembly. The radial and lateral dimensional deviation detection mechanism is used for detecting the radial dimensional deviation and the lateral dimensional deviation of the wheel assembly; the positioning and clamping mechanism, the inflation mechanism, the external dimension detection mechanism, the groove depth detection mechanism and the radial and lateral dimension deviation detection mechanism can realize automatic, efficient and accurate detection of the wheel assembly under the control of the central controller, the detection efficiency is improved, and the consistency of detection standards can be ensured in batch detection.

Description

Technical Field

[0001] This application relates to the field of wheel inspection technology, and in particular to a wheel assembly inspection device and inspection method. Background Technology

[0002] As a core component of a vehicle's driving system, the wheel assembly's performance parameters directly affect the vehicle's driving safety, stability, and comfort. Currently, the inspection process for wheel assemblies typically involves several independent steps. For example: first, the tires are inflated to the standard tire pressure using specialized inflation equipment; then, the tire surface is manually inspected, or a separate visual inspection device is used, for defects such as scratches, bulges, and damage; next, the tread depth is measured individually using a groove depth gauge to determine if it meets safe driving requirements; finally, radial and lateral runout deviations are detected using a wheel dynamic balancing machine or specialized deviation testing equipment. This inspection process, due to its dispersed steps, requires multiple independent devices and multiple workstations. The equipment occupies a large area, has high purchase costs, and the wheel assembly needs to be transferred between different devices, which is time-consuming and labor-intensive, resulting in low inspection efficiency. Summary of the Invention

[0003] This application provides a wheel assembly testing device and testing method to solve the technical problem of how to improve the testing efficiency of wheel assemblies.

[0004] In a first aspect, this application provides a wheel assembly testing device, the device including a positioning and clamping mechanism, an inflation mechanism, an appearance dimension testing mechanism, a groove depth testing mechanism, a radial and lateral dimension deviation testing mechanism, and a central controller, all mounted on a testing bench. The central controller is electrically connected to the positioning and clamping mechanism, the inflation mechanism, the appearance dimension detection mechanism, the groove depth detection mechanism, and the radial and lateral dimension deviation detection mechanism, respectively. The central controller is configured to control the positioning and clamping mechanism to fix the wheel assembly to be tested, and to control the inflation mechanism to inflate the wheel assembly to a preset tire pressure. The central controller is also configured to control the positioning and clamping mechanism to drive the wheel assembly to rotate at a preset speed after the wheel assembly has been inflated. The central controller is also configured to, during the rotation of the wheel assembly, control the appearance dimension detection mechanism to detect the appearance dimensions of the wheel assembly, control the groove depth detection mechanism to detect the groove depth of the wheel assembly, and control the radial and lateral dimension deviation detection mechanism to detect the radial and lateral dimension deviations of the wheel assembly.

[0005] Optionally, the positioning and clamping mechanism includes a centering shaft, pneumatic grippers, and a drive motor; The centering shaft is used to insert into the center hole of the wheel assembly to position the wheel assembly; The pneumatic grippers are symmetrically distributed on the outside of the centering shaft and are used to clamp the wheel hub of the wheel assembly; The drive motor is connected to the centering shaft and is used to drive the wheel assembly to rotate around the centering shaft under the control of the central controller.

[0006] Optionally, the pneumatic gripper is provided with an anti-slip layer, and the pneumatic gripper clamps the wheel hub according to a target clamping force through the anti-slip layer, the magnitude of which is controlled by the central controller.

[0007] Optionally, the inflation mechanism includes an inflation device and a pressure sensor; The inflation device is used to inflate the wheel assembly under the control of the central controller; The air pressure sensor is used to detect the tire pressure of the wheel assembly.

[0008] Optionally, the appearance dimension detection mechanism includes an industrial camera, a light source assembly, and an image processor; The industrial camera is configured with its lens facing the tire surface of the wheel assembly; The light source assembly is arranged around the industrial camera to provide a light source for the industrial camera; The image processor is used to analyze the images acquired by the industrial camera to identify surface defects and external dimensions of the wheel assembly in the acquired images.

[0009] Optionally, the trench depth detection mechanism includes a laser displacement sensor and a lateral movement module; The laser displacement sensor is slidably connected above the lateral movement module, which is set on the worktable of the testing frame. Under the action of the central controller, the lateral movement module drives the laser displacement sensor to move. The laser displacement sensor is used to collect the groove depth between the bottom of the groove and the tread surface of the wheel assembly.

[0010] Optionally, the lateral movement module includes a stepper motor, a guide rail, and a lead screw; The laser displacement sensor is mounted on the guide rail, and the stepper motor drives the lead screw to rotate so as to drive the laser displacement sensor to move laterally along the guide rail to continuously collect the groove depth of multiple grooves.

[0011] Optionally, the radial lateral dimension deviation detection mechanism includes a radial displacement sensor and a lateral displacement sensor; The detection end of the radial displacement sensor is configured to contact the outer circumferential surface of the tire of the wheel assembly; The detection end of the lateral displacement sensor is configured to make lateral contact with the tire of the wheel assembly.

[0012] Optionally, the detection end of the radial displacement sensor and the detection end of the lateral displacement sensor are provided with wear-resistant heads.

[0013] Secondly, this application provides a wheel assembly testing method, applied to the wheel assembly testing device described in any one of the first aspects, the method comprising: The wheel assembly to be tested is fixed by a positioning and clamping mechanism; The wheel assembly is inflated to a preset tire pressure using an inflation mechanism; After the wheel assembly is fully inflated, the positioning and clamping mechanism drives the wheel assembly to rotate at a preset speed. During the rotation of the wheel assembly, the appearance dimensions of the wheel assembly are detected by an appearance dimension detection mechanism, the groove depth of the wheel assembly is detected by a groove depth detection mechanism, and the radial and lateral dimension deviations of the wheel assembly are detected by a radial and lateral dimension deviation detection mechanism, thereby obtaining detection data. The test data is compared with the qualified parameters corresponding to the wheel assembly to obtain the test results; The system outputs the test results and stores the associated data from the testing process; wherein the associated data includes at least one of the following: the wheel assembly number, the test time, the test data, and the test pass status.

[0014] Compared with the prior art, the technical solution provided in this application has the following advantages: The wheel assembly testing device provided in this application includes a positioning and clamping mechanism, an inflation mechanism, an appearance dimension testing mechanism, a groove depth testing mechanism, a radial and lateral dimension deviation testing mechanism, and a central controller, all mounted on a testing bench. The central controller is electrically connected to the positioning and clamping mechanism, the inflation mechanism, the appearance dimension testing mechanism, the groove depth testing mechanism, and the radial and lateral dimension deviation testing mechanism, respectively. The central controller is configured to control the positioning and clamping mechanism to fix the wheel assembly to be tested, and to control the inflation mechanism to inflate the wheel assembly to a preset tire pressure. The central controller is also configured to control the positioning and clamping mechanism to drive the wheel assembly to rotate at a preset speed after the wheel assembly is inflated. The central controller is further configured to control the appearance dimension testing mechanism to detect the appearance dimensions of the wheel assembly, control the groove depth testing mechanism to detect the groove depth of the wheel assembly, and control the radial and lateral dimension deviation testing mechanism to detect the radial and lateral dimension deviations of the wheel assembly during the rotation of the wheel assembly. This wheel assembly testing device integrates a positioning and clamping mechanism, an inflation mechanism, a dimensional inspection mechanism, a groove depth inspection mechanism, a radial and lateral dimensional deviation inspection mechanism, and a central controller onto a testing bench. The central controller is electrically connected to the positioning and clamping mechanism, the inflation mechanism, the dimensional inspection mechanism, the groove depth inspection mechanism, and the radial and lateral dimensional deviation inspection mechanism, and controls the actions of these mechanisms. For example, it controls the positioning and clamping mechanism to fix the wheel assembly to be tested; it controls the inflation mechanism to inflate the wheel assembly to a preset tire pressure; and after the wheel assembly is inflated, it controls the positioning and clamping mechanism to drive the wheel assembly at a preset speed. Rotation; during the rotation of the wheel assembly, the appearance dimension detection mechanism is controlled to detect the appearance dimensions of the wheel assembly, the groove depth detection mechanism is controlled to detect the groove depth of the wheel assembly, and the radial and lateral dimension deviation detection mechanism is controlled to detect the radial and lateral dimension deviations of the wheel assembly. That is, the positioning clamping mechanism, the inflation mechanism, the appearance dimension detection mechanism, the groove depth detection mechanism, and the radial and lateral dimension deviation detection mechanism can achieve automatic, efficient, and accurate detection of the wheel assembly under the control of the central controller, which improves the detection efficiency and ensures the consistency of the detection standards in batch detection. Attached Figure Description

[0015] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0018] Figure 1 This is a schematic diagram of the structure of a wheel assembly testing device provided in one embodiment of this application; Figure 2 This is a schematic flowchart of a wheel assembly testing method provided in one embodiment of this application.

[0019] The attached icons are numbered as follows: 10-Testing stand; 11-Positioning and clamping mechanism; 12-Inflation mechanism; 13-Dimensional inspection mechanism; 14-Groove depth inspection mechanism; 15-Radial and lateral dimensional deviation inspection mechanism; 16-Central controller; 20-Wheel assembly; 101-Worktable; 111-Centering shaft; 112-Pneumatic gripper; 113-Drive motor; 121-Inflation device; 122-Pressure sensor; 131-Industrial camera; 132-Light source assembly; 133-Image processor; 141-Laser displacement sensor; 142-Lateral movement module; 151-Radial displacement sensor; 152-Lateral displacement sensor; 161-Display module. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0022] As a core component of a vehicle's driving system, the wheel assembly's performance parameters directly affect the vehicle's driving safety, stability, and comfort. Currently, the inspection process for wheel assemblies typically involves several independent steps. For example: first, the tires are inflated to the standard tire pressure using specialized inflation equipment; then, the tire surface is manually inspected or checked using separate visual inspection equipment for defects such as scratches, bulges, and damage; next, the tread depth is measured individually using a groove depth gauge to determine if it meets safe driving requirements; finally, radial runout and lateral runout are detected using a wheel dynamic balancing machine or specialized deviation detection equipment.

[0023] The above testing process has at least the following defects: 1. Due to the dispersed testing process, multiple independent devices and multiple operating stations are required. The equipment occupies a large area and has a high purchase cost. In addition, the wheel assembly needs to be transferred between various devices, which is time-consuming and labor-intensive, resulting in low testing efficiency.

[0024] 2. The process involves a high degree of human intervention, especially in appearance inspection and trench depth measurement, which are easily affected by human factors, resulting in poor accuracy and consistency of inspection results.

[0025] 3. The parameters of each testing step cannot be linked and matched. For example, the stability of the inflation pressure directly affects the dimensional deviation test results, but in some related technologies, inflation and testing are carried out independently, making it difficult to guarantee the accuracy of the test.

[0026] 4. The test data is stored in a scattered manner, which makes it difficult to manage, trace, and perform subsequent data analysis and optimization.

[0027] To at least address the technical problem of how to improve the inspection efficiency of wheel assemblies in the prior art, this application provides a wheel assembly inspection device and inspection method, which enables the positioning and clamping mechanism, inflation mechanism, appearance dimension inspection mechanism, groove depth inspection mechanism and radial and lateral dimension deviation inspection mechanism to achieve automatic, efficient and accurate inspection of wheel assemblies under the control of a central controller, thereby improving inspection efficiency and ensuring the consistency of inspection standards in batch inspection.

[0028] The first embodiment of this application provides a wheel assembly testing device, such as... Figure 1The device includes a positioning and clamping mechanism 11, an inflation mechanism 12, a visual dimension detection mechanism 13, a groove depth detection mechanism 14, a radial and lateral dimension deviation detection mechanism 15, and a central controller 16, all mounted on a testing bench 10. The testing bench 10 is an integral support structure with a horizontal worktable 101 on its top. The central controller 16 is electrically connected to the positioning and clamping mechanism 11, the inflation mechanism 12, the visual dimension detection mechanism 13, the groove depth detection mechanism 14, and the radial and lateral dimension deviation detection mechanism 15. The central controller 16 controls the operation of these mechanisms and analyzes the test results.

[0029] The positioning and clamping mechanism 11 is used to fix the wheel assembly 20 to be inspected; the inflation mechanism 12 is used to inflate the wheel assembly 20 to a preset tire pressure; the positioning and clamping mechanism 11 is also used to drive the wheel assembly 20 to rotate at a preset speed after the wheel assembly 20 is inflated; the appearance dimension detection mechanism 13 is used to detect the appearance dimension of the wheel assembly 20 during the rotation of the wheel assembly 20; the groove depth detection mechanism 14 is used to detect the groove depth of the wheel assembly 20 during the rotation of the wheel assembly 20; the radial and lateral dimension deviation detection mechanism 15 is used to detect the radial and lateral dimension deviations of the wheel assembly 20 during the rotation of the wheel assembly 20.

[0030] The wheel assembly testing device integrates a positioning clamping mechanism 11, an inflation mechanism 12, an external dimension detection mechanism 13, a groove depth detection mechanism 14, a radial and lateral dimension deviation detection mechanism 15, and a central controller 16 onto a testing bench 10. The central controller 16 is electrically connected to the positioning clamping mechanism 11, the inflation mechanism 12, the external dimension detection mechanism 13, the groove depth detection mechanism 14, and the radial and lateral dimension deviation detection mechanism 15, and controls the actions of these mechanisms. For example, it controls the positioning clamping mechanism 11 to fix the wheel assembly 20 to be tested; it controls the inflation mechanism 12 to inflate the wheel assembly 20 to a preset tire pressure; and after the wheel assembly 20 is inflated, it controls the positioning clamping mechanism 11 to drive the wheel assembly 20. The wheel assembly 20 rotates at a preset speed. During the rotation of the wheel assembly 20, the appearance dimension detection mechanism 13 is controlled to detect the appearance dimension of the wheel assembly 20, the groove depth detection mechanism 14 is controlled to detect the groove depth of the wheel assembly 20, and the radial and lateral dimension deviation detection mechanism 15 is controlled to detect the radial and lateral dimension deviations of the wheel assembly 20. That is, the positioning clamping mechanism 11, the inflation mechanism 12, the appearance dimension detection mechanism 13, the groove depth detection mechanism 14, and the radial and lateral dimension deviation detection mechanism 15 can automatically and efficiently detect the wheel assembly under the control of the central controller 16, which improves the detection efficiency and ensures the consistency of the detection standards in batch detection.

[0031] In one embodiment, the positioning and clamping mechanism 11 includes a centering shaft 111, a pneumatic gripper 112, and a drive motor 113.

[0032] The centering shaft 111 is used to insert into the center hole of the wheel assembly 20 to position the wheel assembly 20; the pneumatic grippers 112 are symmetrically distributed on the outside of the centering shaft 111 and are used to clamp the wheel hub of the wheel assembly 20; the drive motor 113 is connected to the centering shaft 111 and is used to drive the wheel assembly 20 to rotate around the centering shaft 111 under the control of the central controller 16.

[0033] In this embodiment, the positioning and clamping mechanism 11 can insert the centering shaft 111 into the center hole of the wheel assembly 20 to be tested for positioning, and then clamp the wheel hub of the wheel assembly 20 for fixing by the pneumatic grippers 112 symmetrically distributed on the outside of the centering shaft 111. The drive motor 113 is connected to the centering shaft 111 for transmission and can drive the wheel assembly 20 to rotate around the centering shaft 111. The rotation speed can be controlled by the central controller 16.

[0034] In one embodiment, the pneumatic gripper 112 is provided with an anti-slip layer. The pneumatic gripper 112 clamps the hub according to the target clamping force through the anti-slip layer. The magnitude of the target clamping force is controlled by the central controller 16.

[0035] In this embodiment, the pneumatic gripper 112 clamps the wheel hub with the target clamping force through the anti-slip layer, which can prevent the wheel hub from being scratched and protect the wheel assembly 20. The target clamping force can be controlled by the central controller 16. Different target clamping forces can be set for different models of wheel assemblies as needed. It should be understood that the target clamping force is the same for wheel assemblies of the same model, thereby ensuring that the fixed clamping state of wheel assemblies in the same batch is consistent and ensuring consistency between tests.

[0036] In one embodiment, the inflation mechanism 12 includes an inflation device 121 and a pressure sensor 122.

[0037] The inflation device 121 is used to inflate the wheel assembly 20 under the control of the central controller 16; the tire pressure sensor 122 is used to detect the tire pressure of the wheel assembly 20.

[0038] In this embodiment, the inflation device 121 may include an inflation nozzle, an inflation pump, and a deflation valve. The inflation nozzle is fixed to the side of the test bench 10 via a telescopic bracket, and the height of the inflation nozzle is adapted to the valve of the wheel assembly 20. The air pressure sensor 122 (also known as a tire pressure sensor) can be installed inside the inflation nozzle for real-time detection of tire inflation pressure. The inflation pump and deflation valve are connected to the inflation nozzle via air pipes and are both electrically connected to the central controller 16. The inflation mechanism 12 can inflate the wheel assembly 20 to a preset tire pressure, ensuring that the inflation pressure of the tire assemblies tested in batches is consistent, thus ensuring that the wheel assemblies tested in batches maintain a consistent state during testing.

[0039] In one embodiment, the appearance and size inspection mechanism 13 includes an industrial camera 131, a light source assembly 132, and an image processor 133.

[0040] An industrial camera 131 is configured with its lens facing the tire surface of the wheel assembly 20; a light source assembly 132 is arranged around the industrial camera 131 to provide a light source for the industrial camera 131; and an image processor 133 is used to analyze the images acquired by the industrial camera 131 to identify surface defects and external dimensions of the wheel assembly 20 in the acquired images.

[0041] In this embodiment, the central controller 16 controls the drive motor 113 to start, driving the wheel assembly 20 to rotate at a constant speed around the centering shaft 111. During the rotation of the wheel assembly 20, the central controller 16 controls the industrial camera 131 and the light source assembly 132 to work. The industrial camera 131 continuously acquires images of the tire surface and transmits them to the image processor 133. The image processor 133 performs grayscale conversion, noise reduction, contour extraction and other processing on the images to identify whether there are defects such as scratches, bulges, and damage on the tire surface, and calculates the appearance size parameters such as the tire outer diameter and width. The detection results are transmitted to the central controller 16 to realize the appearance defect and size detection of the wheel assembly 20.

[0042] In this embodiment, the industrial camera 131 can be fixed above the worktable 101 of the inspection table 10 by adjusting the bracket. At least two industrial cameras 131 can be set and symmetrically distributed on both sides of the wheel assembly 20. The lens angle of the industrial camera 131 can be adjusted to ensure that the entire circumferential surface of the tire of the wheel assembly 20 is covered.

[0043] In one embodiment, the trench depth detection mechanism 14 includes a laser displacement sensor 141 and a lateral movement module 142.

[0044] The laser displacement sensor 141 is slidably connected above the lateral movement module 142. The lateral movement module 142 is set on the worktable 101 of the detection table 10. Under the action of the central controller 16, the lateral movement module 142 drives the laser displacement sensor 141 to move. The laser displacement sensor 141 is used to collect the groove depth between the bottom of the groove and the tread surface of the wheel assembly 20.

[0045] In this embodiment, the laser displacement sensor 141 is slidably connected to the upper part of the lateral movement module 142. The lateral movement module 142 is set on the worktable 101. That is, the lateral movement module 142 can drive the laser displacement sensor 141 to move under the control of the central controller 16, so that the laser displacement sensor 141 can continuously collect the groove depth between the bottom of the groove and the tread surface of the wheel assembly 20.

[0046] Specifically, the lateral movement module 142 may include a stepper motor, a guide rail, and a lead screw. A laser displacement sensor 141 is mounted on the guide rail, and the stepper motor drives the lead screw to rotate, thereby driving the laser displacement sensor 141 to move laterally along the guide rail to continuously collect the groove depth of multiple grooves.

[0047] In this embodiment, during the rotation of the wheel assembly 20, the central controller 16 controls the stepper motor of the lateral movement module 142 to start, driving the laser displacement sensor 141 to move at a constant speed along the tire width direction. The laser displacement sensor 141 collects the distance data between the bottom of the groove and the tread surface in real time. The central controller 16 can calculate the depth value of each groove based on the collected data and compare it with the preset standard value to determine whether the groove depth of the wheel assembly 20 is qualified.

[0048] In one embodiment, the radial and lateral dimension deviation detection mechanism 15 includes a radial displacement sensor 151 and a lateral displacement sensor 152.

[0049] The detection end of the radial displacement sensor 151 is configured to contact the outer circumferential surface of the tire of the wheel assembly 20; the detection end of the lateral displacement sensor 152 is configured to contact the lateral surface of the tire of the wheel assembly 20.

[0050] In this embodiment, during the rotation of the wheel assembly 20, the radial displacement sensor 151 detects the radial runout data of the outer circumferential surface of the tire in real time, and the lateral displacement sensor 152 detects the lateral runout data of the tire sidewall in real time. The central controller 16 processes the collected data, calculates the radial runout deviation value and the lateral runout deviation value, compares them with the preset deviation threshold, and determines whether the radial runout deviation and lateral runout deviation of the wheel assembly 20 are qualified. The radial displacement sensor 151 and the lateral displacement sensor 152 can be fixed on the testing stand 10 respectively. The specific fixing position is not limited, as long as the detection end of the radial displacement sensor 151 is in contact with the outer circumferential surface of the tire of the wheel assembly 20, and the detection end of the lateral displacement sensor 152 is in contact with the lateral surface of the tire of the wheel assembly 20.

[0051] In one embodiment, the detection end of the radial displacement sensor 151 and the detection end of the lateral displacement sensor 152 are provided with wear-resistant heads.

[0052] In this embodiment, the radial displacement sensor 151 and the lateral displacement sensor 152 can be contact-type inductive displacement sensors, which can ensure a detection accuracy of ≤0.01mm. A wear-resistant alloy head can be provided at the detection end to improve the service life of the radial displacement sensor 151 and the lateral displacement sensor 152.

[0053] In one embodiment, the central controller 16 includes a data processing module, a motion control module, a display module 161, and a storage module.

[0054] The motion control module is used to control the actions of the positioning and clamping mechanism 11, the inflation mechanism 12, the appearance dimension detection mechanism 13, the groove depth detection mechanism 14, and the radial and lateral dimension deviation detection mechanism 15; the data processing module is used to analyze and process the detection data to obtain the detection results; the display module 161 is used to display the detection data in real time; and the storage module is used to store the detection data and detection results.

[0055] In this embodiment, the data processing module is used to analyze and compare various types of collected test data, the action control module is used to control each mechanism to act according to a preset process, the display module 161 is used to display test data in real time, such as various test parameters and qualified status, and the storage module is used to store test data and test results, including various historical records, and supports data export.

[0056] In this embodiment, the display module 161 displays the detection value and pass status of each parameter. If all parameters are qualified, a "detection qualified" signal is output to control the pneumatic gripper to release and complete the detection. If there are unqualified parameters, a "detection unqualified" signal is output and the unqualified items are marked for subsequent processing.

[0057] In the above embodiments of this application, at least the following effects are achieved: 1. Integrated design: The inflation mechanism, appearance dimension inspection mechanism, groove depth inspection mechanism and radial and lateral dimension deviation inspection mechanism are integrated into one unit, eliminating the need for multiple independent devices and multiple workstations, reducing equipment footprint and purchase costs, avoiding time-consuming wheel assembly transfer, and greatly improving inspection efficiency; 2. High degree of automation: The entire testing process is automatically controlled by a central controller, eliminating the need for manual intervention in inflation, testing, data recording, and other steps. This reduces reliance on manual labor, avoids the influence of human factors on test results, and improves the accuracy and consistency of test results. 3. Parameter linkage and matching: The inflation process is linked with the subsequent testing process. After the inflation pressure reaches the preset tire pressure standard value, the testing is automatically started to ensure the accuracy of test parameters such as size deviation and groove depth. At the same time, all testing mechanisms work synchronously to further improve testing efficiency. 4. Data-driven management: The central controller collects, analyzes, and stores all test data in real time, supports data export and historical record query, facilitates quality traceability and production process optimization, and meets the needs of modern production management; 5. Wide range of applications: The positioning and clamping parameters, inflation pressure, and testing standards can be adjusted through the central controller, making it suitable for testing wheel assemblies of different specifications and types, and highly versatile.

[0058] Based on the same technical concept, the second embodiment of this application provides a wheel assembly testing method, such as... Figure 2 The wheel assembly testing method can be applied to the wheel assembly testing device described in any one of the first embodiments, and the method includes: Step 201: Fix the wheel assembly to be tested using a positioning clamping mechanism.

[0059] Step 202: Inflate the wheel assembly to the preset tire pressure using the inflation mechanism.

[0060] Step 203: After the wheel assembly is fully inflated, the wheel assembly is driven to rotate at a preset speed by a positioning and clamping mechanism.

[0061] Step 204: During the rotation of the wheel assembly, the appearance dimensions of the wheel assembly are inspected by the appearance dimension inspection mechanism, the groove depth of the wheel assembly is inspected by the groove depth inspection mechanism, and the radial and lateral dimension deviations of the wheel assembly are inspected by the radial and lateral dimension deviation inspection mechanism to obtain inspection data.

[0062] Step 205: Compare the test data with the corresponding qualified parameters of the wheel assembly to obtain the test results; Step 206: Output the test results and store the associated data during the test process; wherein, the associated data includes at least one of the following: wheel assembly number, test time, test data, and test pass status.

[0063] In this embodiment, the wheel assembly to be tested is fixed by a positioning and clamping mechanism, and the wheel assembly is inflated to a preset tire pressure by an inflation mechanism. After the wheel assembly is inflated, the positioning and clamping mechanism drives the wheel assembly to rotate at a preset speed. During the rotation of the wheel assembly, the appearance dimension detection mechanism detects the appearance dimension of the wheel assembly, the groove depth detection mechanism detects the groove depth of the wheel assembly, and the radial and lateral dimension deviation detection mechanism detects the radial and lateral dimension deviations of the wheel assembly. The detection data is obtained and compared with the corresponding qualified parameters of the wheel assembly to obtain the detection result. The detection result is output and the associated data in the detection process is stored. The positioning and clamping mechanism, inflation mechanism, appearance dimension inspection mechanism, groove depth inspection mechanism, and radial and lateral dimension deviation inspection mechanism can automatically and efficiently perform accurate inspections of the wheel assembly under the control of the central controller, improving inspection efficiency. In batch inspections, the consistency of inspection standards can be guaranteed, and the output inspection results can intuitively determine whether the wheel assembly is qualified. Centralized storage of related data during the inspection process facilitates subsequent traceability.

[0064] In one specific embodiment, the wheel assembly detection method includes: Step S1, loading and positioning: Place the wheel assembly to be inspected on the centering shaft of the positioning and clamping mechanism. The central controller controls the pneumatic gripper to clamp the edge of the wheel hub, thereby achieving centering and clamping of the wheel assembly. Step S2, Automatic inflation: The central controller controls the air pump to start, the air nozzle is aligned with the valve of the wheel assembly to inflate, the air pressure sensor collects the inflation pressure data in real time and feeds it back to the central controller, and when the pressure reaches the preset standard tire pressure, the air pump stops working and inflation is completed. Step S3, Appearance and Dimension Inspection: The central controller controls the drive motor to start, causing the wheel assembly to rotate at a constant speed around the centering shaft. At the same time, it controls the industrial camera and light source assembly to work. The industrial camera continuously acquires images of the tire surface and transmits them to the image processor. The image processor performs grayscale conversion, noise reduction, contour extraction and other processing on the images to identify whether there are defects such as scratches, bulges, and damage on the tire surface, and calculates the appearance and dimension parameters such as the tire's outer diameter and width. The inspection results are then transmitted to the central controller. Step S4, Groove Depth Detection: During the rotation of the wheel assembly, the central controller controls the stepper motor of the lateral movement module to start, driving the laser displacement sensor to move at a constant speed along the tire width direction. The laser displacement sensor collects the distance data between the bottom of the groove and the tread surface in real time. The central controller calculates the depth value of each groove based on the collected data and compares it with the preset standard value to determine whether it is qualified. Step S5, Radial and Lateral Dimension Deviation Detection: The wheel assembly rotates continuously. The radial displacement sensor detects the radial runout data of the outer circumference of the tire in real time, and the lateral displacement sensor detects the lateral runout data of the tire sidewall in real time. The central controller processes the collected data, calculates the radial runout deviation value and the lateral runout deviation value, compares them with the preset deviation threshold, and determines whether they are qualified. Step S6, Output of test results: The central controller summarizes all test results and displays the test values ​​and pass / fail status of each parameter through the display module. If all parameters are qualified, it outputs a "test qualified" signal and controls the pneumatic gripper to release, thus completing the test. If there are unqualified parameters, it outputs a "test unqualified" signal and marks the unqualified items for subsequent processing.

[0065] In this embodiment, inflation, dimensional inspection, groove depth inspection, and radial and lateral dimensional deviation inspection are integrated into one unit, eliminating the need for multiple independent devices and workstations, reducing equipment footprint and purchase costs, avoiding time-consuming wheel assembly transfers, and significantly improving inspection efficiency. The entire inspection process is automatically controlled by a central controller, eliminating the need for manual intervention in inflation, inspection, and data recording, reducing reliance on manual labor, avoiding the influence of human factors on inspection results, and improving the accuracy and consistency of inspection results. The inflation process is linked with subsequent inspection stages; inspection is automatically initiated after the inflation pressure reaches the standard value, ensuring the accuracy of inspection parameters such as dimensional deviation and groove depth. Simultaneously, each inspection mechanism works synchronously, further improving inspection efficiency. The central controller collects, analyzes, and stores all inspection data in real time, supporting data export and historical record queries, facilitating quality traceability and production process optimization, and meeting the needs of modern production management. Positioning clamping parameters, inflation pressure, and inspection standards can be adjusted through the central controller to adapt to the inspection of different specifications and types of wheel assemblies, demonstrating strong versatility.

[0066] This application also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the wheel assembly detection method as provided in the foregoing method embodiments.

[0067] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0068] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented using software plus a general-purpose hardware platform, or of course, using hardware. Based on this understanding, the above technical solutions, in essence or the parts that contribute to the related technology, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0069] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0070] It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. In the description, suffixes such as "module," "part," or "unit" used to denote elements are used solely for illustrative purposes and have no specific meaning in themselves. Therefore, "module," "part," or "unit" may be used interchangeably.

[0071] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A wheel assembly testing device, characterized in that, The device includes a positioning and clamping mechanism, an inflation mechanism, an appearance dimension detection mechanism, a groove depth detection mechanism, a radial and lateral dimension deviation detection mechanism, and a central controller, all mounted on a testing bench. The central controller is electrically connected to the positioning and clamping mechanism, the inflation mechanism, the appearance dimension detection mechanism, the groove depth detection mechanism, and the radial and lateral dimension deviation detection mechanism, respectively. The central controller is configured to control the positioning and clamping mechanism to fix the wheel assembly to be tested, and to control the inflation mechanism to inflate the wheel assembly to a preset tire pressure. The central controller is also configured to control the positioning and clamping mechanism to drive the wheel assembly to rotate at a preset speed after the wheel assembly has been inflated. The central controller is also configured to, during the rotation of the wheel assembly, control the appearance dimension detection mechanism to detect the appearance dimensions of the wheel assembly, control the groove depth detection mechanism to detect the groove depth of the wheel assembly, and control the radial and lateral dimension deviation detection mechanism to detect the radial and lateral dimension deviations of the wheel assembly.

2. The apparatus according to claim 1, characterized in that, The positioning and clamping mechanism includes a centering shaft, pneumatic grippers, and a drive motor; The centering shaft is used to insert into the center hole of the wheel assembly to position the wheel assembly; The pneumatic grippers are symmetrically distributed on the outside of the centering shaft and are used to clamp the wheel hub of the wheel assembly; The drive motor is connected to the centering shaft and is used to drive the wheel assembly to rotate around the centering shaft under the control of the central controller.

3. The apparatus according to claim 2, characterized in that, The pneumatic gripper is provided with an anti-slip layer. The pneumatic gripper clamps the wheel hub according to the target clamping force through the anti-slip layer. The magnitude of the target clamping force is controlled by the central controller.

4. The apparatus according to claim 1, characterized in that, The inflation mechanism includes an inflation device and a pressure sensor; The inflation device is used to inflate the wheel assembly under the control of the central controller; The air pressure sensor is used to detect the tire pressure of the wheel assembly.

5. The apparatus according to claim 1, characterized in that, The appearance and size inspection mechanism includes an industrial camera, a light source assembly, and an image processor; The industrial camera is configured with its lens facing the tire surface of the wheel assembly; The light source assembly is arranged around the industrial camera to provide a light source for the industrial camera; The image processor is used to analyze the images acquired by the industrial camera to identify surface defects and external dimensions of the wheel assembly in the acquired images.

6. The apparatus according to claim 1, characterized in that, The trench depth detection mechanism includes a laser displacement sensor and a lateral movement module; The laser displacement sensor is slidably connected above the lateral movement module, which is set on the worktable of the testing frame. Under the action of the central controller, the lateral movement module drives the laser displacement sensor to move. The laser displacement sensor is used to collect the groove depth between the bottom of the groove and the tread surface of the wheel assembly.

7. The apparatus according to claim 6, characterized in that, The lateral movement module includes a stepper motor, a guide rail, and a lead screw; The laser displacement sensor is mounted on the guide rail, and the stepper motor drives the lead screw to rotate so as to drive the laser displacement sensor to move laterally along the guide rail to continuously collect the groove depth of multiple grooves.

8. The apparatus according to claim 1, characterized in that, The radial and lateral dimension deviation detection mechanism includes a radial displacement sensor and a lateral displacement sensor; The detection end of the radial displacement sensor is configured to contact the outer circumferential surface of the tire of the wheel assembly; The detection end of the lateral displacement sensor is configured to make lateral contact with the tire of the wheel assembly.

9. The apparatus according to claim 8, characterized in that, The detection end of the radial displacement sensor and the detection end of the lateral displacement sensor are equipped with wear-resistant heads.

10. A method for testing a wheel assembly, characterized in that, The method, applied to the wheel assembly testing apparatus according to any one of claims 1-9, comprises: The wheel assembly to be tested is fixed by a positioning and clamping mechanism; The wheel assembly is inflated to a preset tire pressure using an inflation mechanism; After the wheel assembly is fully inflated, the positioning and clamping mechanism drives the wheel assembly to rotate at a preset speed. During the rotation of the wheel assembly, the appearance dimensions of the wheel assembly are detected by an appearance dimension detection mechanism, the groove depth of the wheel assembly is detected by a groove depth detection mechanism, and the radial and lateral dimension deviations of the wheel assembly are detected by a radial and lateral dimension deviation detection mechanism, thereby obtaining detection data. The test data is compared with the qualified parameters corresponding to the wheel assembly to obtain the test results; The test results are output, and the associated data during the test process is stored; wherein, the associated data includes at least one of the wheel assembly number, test time, test data, and test pass status.

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