Test of Bogie's Secondary Suspension Stiffness Based on the Bogie Test Bench

doi:10.3901/JME.2018.12.023

Abstract

Abstract: For the realization of static and dynamic stiffness of bogie secondary suspension test, a separated test method of secondary suspension bogies three dimensional dynamic and static stiffness is proposed, and the dynamic and static stiffness test model of secondary air spring is established, According to this model, the relationship between the dynamic and static stiffness and the load and the deformation is analyzed. Besides, using bogie parameters test bench, the secondary suspension's dynamic and static stiffness of a certain metro trailer bogie is tested, The system's repeatability error is 0.58%, and the test repeatability is good. According to test data, the lateral stopping block's characteristic curve is consistent with the rubber material characteristics. The error between test value of 1# secondary air spring longitudinal static stiffness and its design value is 18.1%, and the dynamic stiffness of 1# secondary air spring has a rapid increase in wave crest at about 5 Hz. Based on the above test results, it is inferred that the abnormal change of 1# secondary air spring longitudinal stiffness is due to the 1# air spring's quality or assembly dimensions without meeting the requirements, so 1# secondary air spring's assembly relationships should be adjusted, The bogie secondary suspension's parameters and assembly relationships should be optimized according to test results.

Key words: air spring, bogie, bogie test bench, secondary suspension, stiffness testing

CLC Number:

U260

NIU Zhihui, SU Jian, ZHANG Yirui, WANG Qiming, LIN Huiying. Test of Bogie's Secondary Suspension Stiffness Based on the Bogie Test Bench[J]. Journal of Mechanical Engineering, 2018, 54(12): 23-30.

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