A radial impact fixture and radial impact method for automobile hub bearing unit

Abstract

The present invention relates to a radial impact fixture and a radial impact method for automobile wheel hub bearing units, wherein the impact fixture comprises a bottom plate for fixing on an impact test bench, a first vertical plate and a second vertical plate are arranged side by side perpendicular to the bottom plate, a rotating assembly 1 and a rotating assembly 2 are arranged on one side of the first vertical plate, and a rotating assembly 3 is arranged on one side of the second vertical plate, which is rotatably connected to two of the steering knuckle angles of the automobile wheel hub bearing unit; an impact block for impacting the automobile wheel hub unit is arranged between the first vertical plate and the second vertical plate, and the impact block is fixed on the core shaft of the automobile wheel hub bearing unit by a nut. The radial impact fixture and radial impact method for automobile wheel hub bearing units proposed by the present invention can simulate the situation that the wheel hub bearing unit is subjected to radial impact during the driving of the automobile, and solve the problem that the existing impact test machine fixture cannot perform radial impact.

Description

Technical Field

[0001] The invention relates to a radial impact fixture, in particular to a radial impact fixture for an automobile hub bearing unit and a radial impact method. Background Art

[0002] Automobile wheel hub bearings are important components of automobiles. The performance and quality of wheel hub bearings play a key role in the performance and driving safety of automobiles. However, the strength of wheel hub bearings is one of the main reasons affecting their service life and quality. Therefore, improving the strength of wheel hub bearings is of great significance. At present, automobile wheel hub bearings need to undergo simulated impact tests before being put into use to examine the impact resistance of the wheel hub bearing unit. However, conventional impact testing machines can only perform axial impact tests, and the built-in fixtures cannot simulate the ability of the wheel hub bearing unit to withstand radial impact during driving.

[0003] China Patent Authorization Announcement Number: CN 202501971U, authorization announcement date is October 24, 2012. This utility model patent discloses a tire impact tester, including a frame, a lifting mechanism, a loading mechanism, and a load-bearing mechanism (including a fixture and a tire to be tested). This tester has a high degree of automation, accurate detection, and does not require frequent load changes. However, the shortcomings of the above patent are that the load-bearing mechanism (fixture and the part to be tested) of this tester can only simulate the axial impact load on the part to be tested, and cannot simulate the radial impact load on the part to be tested. Therefore, in order to simulate and examine the ability of automobile hub bearings to withstand radial impacts to improve the strength of the hub bearings, a radial impact fixture and a radial impact method for automobile hub bearing units are urgently needed. Summary of the invention

[0004] In order to overcome the above-mentioned deficiencies in the prior art, the present invention proposes a radial impact fixture and a radial impact method for an automobile hub bearing unit, which solve the problem that the prior art cannot simulate the radial impact load on the part to be tested.

[0005] The present invention is achieved through the following technical solutions:

[0006] A radial impact fixture for an automobile wheel hub bearing unit, comprising a bottom plate for fixing on an impact test bench, a first vertical plate and a second vertical plate arranged side by side perpendicular to the bottom plate, a rotating assembly 1 and a rotating assembly 2 rotatably connected to two of the steering knuckle branch angles of the automobile wheel hub bearing unit are arranged on one side of the first vertical plate, a rotating assembly 3 rotatably connected to the third steering knuckle branch angle of the automobile wheel hub bearing unit is arranged on one side of the second vertical plate; an impact block for impacting the automobile wheel hub bearing unit is arranged between the first vertical plate and the second vertical plate, and the impact block is fixed to the core shaft of the automobile wheel hub bearing unit through a nut;

[0007] The first rotating assembly connected to the first steering knuckle angle includes a swing base, one end of the swing base is connected to the first support block and the second support block through a double-headed threaded pin, the first support block and the second support block are fixed to the first vertical plate, and the other end of the swing base is provided with a third joint bearing;

[0008] The second rotating assembly connected to the second steering knuckle angle includes a second rotating shaft, and the two ends of the second rotating shaft are respectively provided with a second joint bearing and a first joint bearing, and the second joint bearing is fixed to the first vertical plate through a steering arm base;

[0009] The rotating component three includes a first rotating shaft, one end of which is provided with a fourth joint bearing, the fourth joint bearing is fixedly connected to a support seat through a screw, the support seat is fixed to the second vertical plate, the other end of the first rotating shaft is connected to the first connecting plate and the second connecting plate through a support plate, and the first connecting plate and the second connecting plate are arranged relatively parallel.

[0010] Furthermore, a first angle support and a second angle support are fixed to the first vertical plate at a side away from the rotating component 1, and the bottoms of the first angle support and the second angle support are fixed to the bottom plate by bolts.

[0011] Furthermore, a large bracket is fixed to the second vertical plate at a side away from the rotating component 3, and the bottom of the large bracket is fixed to the bottom plate by bolts.

[0012] A radial impact method for an automobile hub bearing unit comprises the following steps:

[0013] S1: Place the base plate horizontally on the impact test bench and fix it with bolts;

[0014] S2: Take the automobile wheel hub bearing unit to be tested, use the first tapered pin to fix the third joint bearing with the first steering knuckle angle, use the second tapered pin to fix the first joint bearing with the second steering knuckle angle, place the third steering knuckle angle of the automobile wheel hub bearing unit between the first connecting plate and the second connecting plate, and fix them with bolts, and fix the impact block on the mandrel with a nut;

[0015] S3: Set the drop height through the impact testing machine, select the weight of the hammer, click the test button, the hammer falls on the impact block, and the radial impact test is completed. After the test is completed, the hammer automatically returns to the fixed position.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The radial impact fixture and radial impact method of an automobile wheel hub bearing unit proposed in the present invention can simulate the situation that the wheel hub bearing unit is subjected to radial impact during the driving of the automobile, thereby solving the problem that the existing impact testing machine fixture cannot perform radial impact. Moreover, this radial impact fixture can simulate the actual state of the wheel hub bearing being subjected to radial impact in the vehicle loading environment to the greatest extent, thereby providing test conditions and test methods for improving the strength performance of the wheel hub bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of a radial impact fixture for an automobile hub bearing unit according to an embodiment of the present invention;

[0019] Figure 2 The present invention is a side view of a radial impact fixture for an automobile hub bearing unit according to an embodiment of the present invention.

[0020] In the figure:

[0021] 1. Bottom plate; 2. Large bracket; 3. First angle support; 4. Second angle support; 5. First vertical plate; 6. Second vertical plate; 7. First support block; 8. Second support block; 9. Support seat; 10. Swing base; 11. First rotating shaft; 12. Steering arm base; 13. Support plate; 14. First connecting plate; 15. Second connecting plate; 16. Double-headed threaded pin; 17. Impact block; 18. Screw; 19. First tapered pin shaft; 20. Second tapered pin shaft; 21. First joint bearing; 22. Second joint bearing; 23. Third joint bearing; 24. Automobile wheel hub bearing unit; 25. Second rotating shaft; 26. First steering knuckle support angle; 27. Second steering knuckle support angle; 28. Third steering knuckle support angle; 29. ​​Mandrel; 30. Fourth joint bearing. DETAILED DESCRIPTION

[0022] Examples are shown to specifically illustrate certain embodiments of the present invention, and should not be construed as limiting the scope of the present invention. The disclosed content of the present invention can be improved from materials, methods and reaction conditions at the same time, and all these improvements should fall within the spirit and scope of the present invention.

[0023] like Figure 1-2As shown, a radial impact fixture for an automobile hub bearing unit comprises a base plate 1 for fixing on an impact test bench, a first vertical plate 5 and a second vertical plate 6 are arranged side by side perpendicular to the base plate 1, a rotating assembly 1 and a rotating assembly 2 are arranged on one side of the first vertical plate 5 for rotationally connecting with two of the steering knuckle branches of the automobile hub bearing unit 24, a rotating assembly 3 is arranged on one side of the second vertical plate 6 for rotationally connecting with the third steering knuckle branch angle 28 of the automobile hub bearing unit 24; an impact block 17 for impacting the automobile hub bearing unit is arranged between the first vertical plate 5 and the second vertical plate 6, and the impact block 17 is fixed on the core shaft 29 of the automobile hub bearing unit 24 by a nut.

[0024] In this embodiment, the rotating component 1 that is rotatably connected to the first steering knuckle branch angle 26 includes a swing base 10, one end of the swing base 10 is connected to the first support block 7 and the second support block 8 through a double-headed threaded pin 16, the first support block 7 and the second support block 8 are fixed on the first vertical plate 5, and the other end of the swing base 10 is provided with a third joint bearing 23.

[0025] In this embodiment, the rotating component 2 rotatably connected to the second steering knuckle branch angle 27 includes a second rotating shaft 25, and the two ends of the second rotating shaft 25 are respectively provided with a second joint bearing 22 and a first joint bearing 21, and the second joint bearing 22 is fixed to the first vertical plate 5 through the steering arm base 12.

[0026] In this embodiment, the rotating component three includes a first rotating shaft 11, one end of which is provided with a fourth joint bearing 30, and the fourth joint bearing 30 is fixedly connected to the support seat 9 through a screw 18, and the support seat 9 is fixed on the second vertical plate 6. The other end of the first rotating shaft 11 is connected to the first connecting plate 14 and the second connecting plate 15 through the support plate 13, and the first connecting plate 14 and the second connecting plate 15 are arranged relatively parallel.

[0027] In this embodiment, a first angle support 3 and a second angle support 4 are fixed to the first vertical plate 5 at a side away from the rotating component 1, and the bottoms of the first angle support 3 and the second angle support 4 are fixed to the base plate 1 by bolts.

[0028] In this embodiment, a large bracket 2 is fixed to the second vertical plate 6 at a side away from the rotating component 3, and the bottom of the large bracket 2 is fixed to the bottom plate 1 by bolts.

[0029] A radial impact method for an automobile hub bearing unit comprises the following steps:

[0030] S1: Place the base plate 1 horizontally on the impact test bench and fix it with bolts;

[0031] S2: Take the automobile wheel hub bearing unit 24 to be tested, use the first tapered pin shaft 19 to fix the third joint bearing 23 with the first steering knuckle angle 26, use the second tapered pin shaft 20 to fix the first joint bearing 21 with the second steering knuckle angle 27, place the third steering knuckle angle 28 of the automobile wheel hub bearing unit 24 between the first connecting plate 14 and the second connecting plate 15, and fix them with bolts, and fix the impact block 17 on the core shaft 29 with a nut;

[0032] S3: Set the drop height through the impact tester, select the weight of the heavy hammer, click the test button, and the heavy hammer falls on the impact block 17 to complete the radial impact test. After the test is completed, the heavy hammer automatically returns to the fixed position.

[0033] The wheel offset e is obtained by consulting the vehicle information, and the size of the impact block is designed according to the consulted vehicle wheel offset e to ensure that the radial impact force point is at the wheel offset (simulating the radial force point of the actual vehicle).

[0034] In summary, the automotive wheel hub bearing unit radial impact fixture of the present application can simulate the actual state of the wheel hub bearing being subjected to radial impact in a vehicle installation environment, and provides test conditions and test methods for improving the strength performance of the wheel hub bearing.

[0035] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A radial impact fixture for automobile hub bearing unit, characterized in that: The invention comprises a bottom plate (1) for fixing on an impact test bench, a first vertical plate (5) and a second vertical plate (6) are arranged side by side perpendicular to the bottom plate (1), a rotating assembly 1 and a rotating assembly 2 being rotatably connected to two steering knuckle angles of an automobile wheel hub bearing unit (24) are arranged on one side of the first vertical plate (5), and a rotating assembly 3 being rotatably connected to a third steering knuckle angle (28) of the automobile wheel hub bearing unit (24) is arranged on one side of the second vertical plate (6); an impact block (17) for impacting the automobile wheel hub bearing unit (24) is arranged between the first vertical plate (5) and the second vertical plate (6), and the impact block (17) is fixed to a core shaft (29) of the automobile wheel hub bearing unit (24) via a nut; The first rotating assembly rotatably connected to the first steering knuckle branch angle (26) comprises a swing base (10), one end of the swing base (10) is connected to a first support block (7) and a second support block (8) via a double-headed threaded pin (16), the first support block (7) and the second support block (8) are fixed on the first vertical plate (5), and the other end of the swing base (10) is provided with a third joint bearing (23); The second rotating assembly rotatably connected to the second steering knuckle branch angle (27) comprises a second rotating shaft (25), and the two ends of the second rotating shaft (25) are respectively provided with a second joint bearing (22) and a first joint bearing (21), and the second joint bearing (22) is fixed to the first vertical plate (5) through a steering arm base (12); The rotating assembly three comprises a first rotating shaft (11), one end of which is provided with a fourth joint bearing (30), the fourth joint bearing (30) being fixedly connected to a support seat (9) via a screw (18), the support seat (9) being fixed on a second vertical plate (6), the other end of the first rotating shaft (11) being connected to a first connecting plate (14) and a second connecting plate (15) via a supporting plate (13), the first connecting plate (14) and the second connecting plate (15) being arranged relatively parallel.

2. The radial impact fixture for an automobile hub bearing unit according to claim 1, characterized in that: A first angle support (3) and a second angle support (4) are fixed to the first vertical plate (5) on a side away from the rotating assembly; the bottoms of the first angle support (3) and the second angle support (4) are fixed to the base plate (1) by bolts.

3. The radial impact fixture for automobile hub bearing unit according to claim 2, characterized in that: A large bracket (2) is fixed to the second vertical plate (6) on a side away from the rotating assembly 3, and the bottom of the large bracket (2) is fixed to the bottom plate (1) by bolts.

4. A method for radial impacting an automobile hub bearing unit using the automobile hub bearing unit radial impact fixture according to any one of claims 1 to 3, characterized in that: The specific steps include: S1: Place the base plate (1) horizontally on the impact test bench and fix it with bolts; S2: Take the automobile wheel hub bearing unit (24) to be tested, use the first tapered pin shaft (19) to fix the third joint bearing (23) and the first steering knuckle branch angle (26), use the second tapered pin shaft (20) to fix the first joint bearing (21) and the second steering knuckle branch angle (27), place the third steering knuckle branch angle (28) of the automobile wheel hub bearing unit (24) between the first connecting plate (14) and the second connecting plate (15), and fix them with bolts, and at the same time fix the impact block (17) on the core shaft (29) of the automobile wheel hub bearing unit (24) with a nut; S3: Set the drop height through the impact tester, select the weight of the hammer, click the test button, and the hammer falls onto the impact block (17) to complete the radial impact test. After the test is completed, the hammer automatically returns to the fixed position.

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