Hub bearing unit structure fatigue test system and method
A wheel bearing and fatigue test technology, applied in the direction of mechanical bearing testing, etc., can solve the problem of not being able to judge the fatigue life of the structure, achieve the effect of simple operation and maintenance, and eliminate the decline in loading accuracy
Pending Publication Date: 2021-11-02
ZHEJIANG WANXIANG PRECISION IND +1
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Problems solved by technology
[0009] The purpose of the present invention is to overcome the deficiencies in the prior art, and provide a wheel hub bearing unit structure fatigue test system, which can accurately simulate the actual loaded bending moment of the wheel hub bearing unit, and realize the accurate and stable application of the test bending moment load ; Abandon the use of ball joints to eliminate the problem of decreased loading accuracy caused by the wear of ball joints; achieve accurate evaluation of the fatigue life of the hub bearing unit structure, and completely solve the test that cannot be continued due to early fatigue of the raceway And the problem of structural fatigue life cannot be judged; hydraulic loading is not used, but electric drive loading scheme is used to eliminate the difficulty and complexity of hydraulic system maintenance
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[0040] Example: as attached figure 1 As shown, a wheel hub bearing unit structure fatigue test system includes a base 1, a bottom tooling 2, a test hub bearing unit 3, an adapter plate 4, a strain bridge 5, a loading arm 6, a vertical bar 7, an installation aid 8, a lock Tight nut 9, eccentric inner ring 10, rolling element 11, outer ring 12, flexible shaft 13, servo motor 14 and beam 15, the base 1 is placed on the level ground, and the bottom of the bottom tooling 2 is fixed on the On the base 1, the test hub bearing unit 3 is placed on the bottom tooling 2, and the top of the bottom tooling 2 is locked and fixed with the flange of the test hub bearing unit 3, and the outer ring of the test hub bearing unit 3 is fitted with an adapter plate 4 The two are locked and connected by bolts, the top of the adapter plate 4 is fixedly connected to the bottom end of the loading arm 6, and four strain gauges 16 are evenly distributed along the circumference of the arm body of the loadi...
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The invention discloses a hub bearing unit structure fatigue test system and method, and relates to the field of hub bearing fatigue detection. The system comprises a base, a bottom tool, a test hub bearing unit, an adapter disc, a strain bridge, a loading arm, a vertical rod, an installation auxiliary tool, a locking nut, an eccentric inner ring, a rolling body, an outer ring, a flexible shaft, a servo motor and a cross beam. The test method comprises the steps of load calibration, rotation frequency determination, loading test and failure determination. According to the fatigue test system for the hub bearing structure provided by the invention, the fatigue life of the hub bearing structure can be accurately evaluated, and the problem that the test cannot be carried out due to raceway contact fatigue failure of the test bearing is solved. Meanwhile, an electric drive loading mode is adopted, so that the device has the good characteristics of simple and reliable structure, accurate and stable loading, convenience in maintenance and timely failure judgment.
Description
technical field [0001] The invention relates to the field of wheel hub bearing fatigue detection, in particular to a wheel hub bearing unit structure fatigue test system and method. Background technique [0002] The hub bearing unit (Hub bearing unit) is a bearing applied to the wheel to bear the weight of the vehicle body and transmit power. It is called the hub bearing unit because the flange connected to the brake disc and the hub is integrated with the bearing. [0003] Structural fatigue (Structure fatigue) refers to the material failure phenomenon caused by the long-term bending cycle of the hub bearing flange structure in the application. [0004] In the prior art, there are the following two schemes for the structural fatigue test of the hub bearing unit: [0005] The first solution, Chinese invention patent 200420075349.3 discloses a bending fatigue testing machine for automobile hub bearings. The hub bearing unit is installed on the test spindle, and the hub bear...
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Login to View More IPC IPC(8): G01M13/04
CPCG01M13/04
Inventor 黄德杰范围广许林芳
Owner ZHEJIANG WANXIANG PRECISION IND