Automobile hub bearing test tool

Abstract

An automobile hub bearing test tool comprises two mounting plates, a bearing fixing device, a load stress device and a driving device are arranged between the two mounting plates, and the bearing fixing device comprises a mounting block and a fixing block which is arranged in the mounting block and used for being fixed to the inner flange end of a hub bearing. The fixing block can move in the mounting block in the axial direction of the hub bearing. Sliding grooves are formed in the corresponding positions of the two mounting plates, the load stress device can move in the sliding grooves in the axial direction of the hub bearing, and the fixing blocks and the load stress device move in the axial direction of the hub bearing so that the distance between the center of the hub bearing and the loading center can be changed. The beneficial effects of the utility model are that according to the design of the automobile hub bearing test tool, through adjusting the positions of the fixing block and the load bearing device, the load condition borne by the hub bearing under actual working conditions such as turning or braking can be effectively simulated.

Description

Technical Field

[0001] This utility model relates to a testing fixture, and more particularly to a testing fixture for automotive wheel hub bearings. Background Technology

[0002] The importance of test loads for wheel bearings is self-evident; they are a key factor in ensuring vehicle safety and reliability. As a core component of the vehicle's wheel system, wheel bearings bear various loads during vehicle operation, including radial forces, axial forces, and torques generated by acceleration, braking, and cornering. Test loads can simulate these real-world conditions and evaluate the bearing's performance under different conditions.

[0003] By testing loads, the load-carrying capacity, fatigue life, and durability of wheel hub bearings can be verified, ensuring stable operation within their design life. Furthermore, testing can reveal potential design flaws or manufacturing problems, such as inappropriate material selection, insufficient heat treatment, or geometric tolerances, allowing for necessary improvements before the product is brought to market. Test loads on wheel hub bearings also help optimize the design, improve bearing efficiency and performance, reduce maintenance costs, and extend vehicle service life.

[0004] In summary, wheel hub bearing test loads are of great significance for ensuring vehicle driving safety, improving ride comfort, reducing failure rates, and lowering maintenance costs. It is an indispensable part of automotive quality control and product development, and is crucial for enhancing market competitiveness and customer satisfaction; hence, this patent application is filed. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a testing fixture for automotive wheel hub bearings.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A testing fixture for automotive wheel hub bearings includes two mounting plates arranged in a corresponding manner. Between the two mounting plates are a bearing fixing device for fixing the inner flange end of the wheel hub bearing, a load-bearing device for bearing radial and axial loads, and a driving device for rotating the outer flange end of the wheel hub bearing. The bearing fixing device includes a mounting block and a fixing block built into the mounting block and used to fix it to the inner flange end of the wheel hub bearing. The fixing block can move along the axial direction of the wheel hub bearing within the mounting block. Sliding grooves are provided at corresponding positions on the two mounting plates for the load-bearing device to move along the axial direction of the wheel hub bearing. The fixing block and the load-bearing device move along the axial direction of the wheel hub bearing to change the distance between the center of the wheel hub bearing and the loading center.

[0007] The beneficial effects of this invention are as follows: This automotive wheel hub bearing testing fixture, by adjusting the positions of the fixing block and the load-bearing device, can effectively simulate the load conditions experienced by the wheel hub bearing under actual working conditions such as turning or braking. This adjustment mechanism not only improves the accuracy of the test, making the test results closer to real-world application scenarios, but also enhances the adaptability of the testing fixture, making it suitable for testing different models of wheel hub bearings. Furthermore, by precisely controlling the distance between the center of the wheel hub bearing and the loading center, this fixture can provide engineers with crucial load data, which is essential for optimizing bearing design and improving its durability and reliability. Simultaneously, this design may also reduce errors during the testing process, improve testing efficiency, reduce costs, and help shorten the development cycle of new products.

[0008] Furthermore, an adjustment plate is provided at the end of the mounting plate away from the fixing block, and an adjustment screw is provided on the adjustment plate. A sleeve that cooperates with the adjustment screw is extended from the end face of the fixing block corresponding to the adjustment plate, and a thread line that cooperates with the outer surface of the adjustment screw is provided on the inner diameter surface of the sleeve.

[0009] The adjusting plate design on the wheel hub bearing mounting plate allows users to easily and precisely offset the position of the fixing block by rotating the adjusting screw, through the threaded engagement between the adjusting screw and the inner diameter of the sleeve on the end face of the fixing block. This design enhances adaptability and facilitates adjustment of the wheel hub bearing position using the fixing block. Simultaneously, it simplifies operation, reduces maintenance needs, and improves work efficiency, especially in situations requiring frequent adjustments to the wheel hub bearing position. The threaded engagement design reduces the risk of wear and loosening, helping to lower maintenance costs and improve durability, ensuring proper installation and alignment of the wheel hub bearing, thereby enhancing the overall installation quality.

[0010] Furthermore, a positioning groove is provided on the end face of the fixing block that abuts against the mounting block, and a positioning through groove is provided on the mounting block along the moving direction of the fixing block corresponding to the positioning groove; it also includes a positioning element that forms a fixed abutment between the positioning through groove and the positioning groove.

[0011] The locating groove design on the wheel hub bearing mounting plate, which mates with the locating groove on the end face of the mounting block, ensures precise positioning of the fixing block in the direction of movement. By adjusting the rotation of the screw, users can easily fine-tune the position of the fixing block, while the positioning capability of the locating element ensures the accuracy of the wheel hub bearing load data. The locating element, positioned between the locating groove and the locating through groove, effectively prevents the fixing block from loosening or axially moving, thereby improving the accuracy of testing and the performance stability of the wheel hub bearing.

[0012] Furthermore, the load-bearing device includes a loading center shaft and sliding blocks disposed at both ends of the loading center shaft and slidable within a sliding groove. The sliding blocks are provided with fixing holes, and fixing members are inserted through the fixing holes to fix the position of the sliding blocks within the sliding groove.

[0013] In the design of the load-bearing device, sliding blocks are installed at both ends of the loading center shaft, which can slide within sliding grooves. This structure allows the force applied to the test object to be adjusted by moving the position of the loading center shaft. The sliding blocks have fixing holes, and fasteners inserted through these holes are used to lock the sliding blocks in their position within the sliding grooves when needed. This design not only provides flexibility, allowing the loading center shaft to be precisely positioned according to test requirements, but also ensures the stability and accuracy of the applied force during testing through the locking mechanism of the fasteners. This design also facilitates force analysis of the test object at different positions, thereby obtaining more comprehensive test data. Furthermore, the sliding block design allows for quick adjustment of the loading point without disassembling the entire device, improving testing efficiency and operational convenience.

[0014] Furthermore, the outer surface of the sliding block facing away from the loading center shaft is provided with marking lines along the radial and axial directions of the hub bearing, respectively. The mounting plate is provided with a standard line at the center of the sliding groove along the axial direction of the hub bearing, and the standard line is flush with the marking line provided on the sliding block along the axial direction of the hub bearing.

[0015] The design of the sliding block in the load-bearing device provides a method for controlling and monitoring the position of the sliding block. This is achieved by setting marking lines along the radial and axial directions of the hub bearing on the outer surface of the sliding block facing away from the loading center axis, and by setting a standard line flush with the marking lines along the axial direction of the hub bearing at the center of the sliding groove of the mounting plate. This design allows the operator to quickly and accurately measure and compare the movement distance of the sliding blocks on both sides, ensuring symmetry and consistency during the testing process, thereby improving measurement accuracy, facilitating adjustment, enhancing symmetry, and simplifying the operation. Furthermore, accurate control of the sliding block position helps improve the reliability of the entire testing system and ensures the credibility of the test results, which is crucial for ensuring the performance testing of components such as hub bearings. Attached Figure Description

[0016] Figure 1 This is an isometric view of an embodiment of the present utility model;

[0017] Figure 2 This is an isometric view of the bearing fixing device according to an embodiment of the present invention;

[0018] Figure 3 This is a cross-sectional view of the positioning component in an embodiment of the present invention;

[0019] Figure 4This is a side view of the bearing fixing device according to an embodiment of the present invention.

[0020] Figure 5 This is a partial enlarged view of the load-bearing mechanism in an embodiment of this utility model. Detailed Implementation

[0021] This utility model embodiment provides a testing fixture for automotive wheel hub bearings, such as... Figure 1-5 As shown: The tested wheel hub bearing 4 includes an inner flange end 41 and an outer flange end 42, both of which are provided with threaded holes (not shown in the figure) for bolts to pass through and fix. The automotive wheel hub bearing testing fixture includes two corresponding mounting plates 1. Between the two mounting plates 1 are a bearing fixing device 2 for fixing the inner flange end 41, a load-bearing device 3 for bearing radial and axial loads, and a drive device 5 for rotating the outer flange end 42. The bearing fixing device 2 includes a mounting block 21 and a fixing block 22 built into the mounting block 21 for fixing to the inner flange end 41. The mounting plate 1 is provided with an adjustment groove 12, and the corresponding mounting block 21 is provided with a threaded hole (not shown in the figure) corresponding to the adjustment groove 12. Bolts are passed through the threaded holes (not shown in the figure) on the mounting block 21 so that the mounting block 21 can slide and be fixed within the range of the adjustment groove 12. The fixing block 22 has a mounting hole 222 on the side of the fixing block 22 facing the inner flange end 41. The inner flange end 41 and the fixing block 22 are fixed by bolts passing through the mounting hole 222. The fixing block 22 has a sleeve 223 with a threaded wire (not shown in the figure) protruding from the side of the fixing block 22 away from the inner flange end 41. The side of the mounting block 21 corresponding to the fixing block 22 is fixed with an adjusting plate 24 by fasteners. The adjusting plate 24 has an adjusting knob 242 and an adjusting screw 241 connected to the fixing plate 22. The adjusting screw 241 passes through the sleeve 223 and drives the fixing block 22 to move along the axial direction of the hub bearing 4 when it rotates. In addition, a positioning groove 221 is provided on the end face of the fixing block 22 that abuts against the mounting block 21. A positioning through groove 211 is provided on the mounting block 21 along the moving direction of the fixing block 22 corresponding to the positioning groove 221. A positioning element 23, which is actually a bolt, is inserted between the positioning through groove 211 and the positioning groove 221 to prevent the axial displacement and loosening of the fixing block 22.

[0022] The drive device 5 includes a connecting plate 51 connected to the outer flange end 42 and a rotating drive component (not shown in the figure) that drives the outer flange end 42 to rotate. The connecting plate 51 is provided with a synchronous hole 511 that is fixed to the outer flange end 42 by bolts. After the connecting plate 41 is fixed to the outer flange end 42, the rotating drive component (not shown in the figure) drives the outer flange end 42 to rotate to simulate the tire rotation condition.

[0023] Two mounting plates 1 are provided with corresponding sliding grooves 11 for the load-bearing device 3 to move axially along the hub bearing 4. The load-bearing device 3 includes a loading center shaft 31 and sliding blocks 32 located at both ends of the loading center shaft 31 and slidable within the sliding grooves 11. The sliding blocks 32 are provided with fixing members (not shown in the figure) that are actually bolts passing through them and fixing holes 321 for fixing the sliding blocks 32 to the mounting plates 1. Radial marking lines 323 and axial marking lines 322 are respectively provided on the outer surface of the sliding blocks 32 facing away from the loading center shaft 31 along the radial and axial directions of the hub bearing 4. The mounting plates 1 are provided with standard lines 111 at the center of the groove width at both ends of the sliding grooves 11 along the axial direction of the hub bearing 4. The standard lines 111 are flush with the axial marking lines 322 on the sliding blocks 32.

[0024] The usage process in this embodiment is as follows: By adjusting the position of the mounting block 21 on the mounting plate 1, the radial distance between the center of the wheel hub bearing 4 and the loading center (i.e., the center of the loading center axis 31) is adjusted to simulate the tire radius; by adjusting the positions of the fixing block 22 and the sliding block 32, the axial distance between the center of the wheel hub bearing 4 and the loading center is adjusted, thereby simulating different actual working conditions. The combination of the above two can simulate the force position of the wheel hub bearing 4 in more actual working conditions.

[0025] The above embodiments are merely one preferred embodiment of the present utility model. Ordinary changes and substitutions made by those skilled in the art within the scope of the present utility model's technical solution are all included within the protection scope of the present utility model.

Claims

1. A testing fixture for automotive wheel hub bearings, comprising two mounting plates arranged correspondingly, wherein a bearing fixing device for fixing the inner flange end of the wheel hub bearing, a load-bearing device for bearing radial and axial loads, and a driving device for rotating the outer flange end of the wheel hub bearing are disposed between the two mounting plates, characterized in that: The bearing fixing device includes a mounting block and a fixing block built into the mounting block for fixing to the inner flange end of the hub bearing. The fixing block can move along the axial direction of the hub bearing within the mounting block. Sliding grooves are provided at corresponding positions on the two mounting plates for the load-bearing device to move along the axial direction of the hub bearing within them. The fixing block and the load-bearing device move along the axial direction of the hub bearing to change the distance between the center of the hub bearing and the loading center.

2. The automotive wheel hub bearing testing fixture according to claim 1, characterized in that: An adjustment plate is provided at one end of the mounting plate away from the fixing block. An adjustment screw is provided on the adjustment plate. A sleeve that cooperates with the adjustment screw is extended from the end face of the fixing block corresponding to the adjustment plate. A threaded line that cooperates with the outer surface of the adjustment screw is provided on the inner diameter surface of the sleeve.

3. The automotive wheel hub bearing testing fixture according to claim 2, characterized in that: A positioning groove is provided on the end face of the fixed block that abuts against the mounting block, and a positioning through groove is provided on the mounting block along the moving direction of the fixed block corresponding to the positioning groove; it also includes a positioning component that forms a fixed abutment with the positioning groove through the positioning through groove.

4. The automotive wheel hub bearing testing fixture according to claim 1, characterized in that: The load-bearing device includes a loading center shaft and sliding blocks disposed at both ends of the loading center shaft and slidable within a sliding groove. The sliding blocks are provided with fixing holes, and fixing members are inserted through the fixing holes to fix the position of the sliding blocks within the sliding groove.

5. The automotive wheel hub bearing testing fixture according to claim 4, characterized in that: Marking lines are respectively provided on the outer surface of the sliding block facing away from the loading center shaft along the radial and axial directions of the hub bearing. A standard line is provided on the mounting plate at the center of the sliding groove along the axial direction of the hub bearing. The standard line is flush with the marking line provided on the sliding block along the axial direction of the hub bearing.

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