New Flexible Coupled Radial Bogie
with Independently Rotating Wheels

CHI Maoru  ZHANG Weihua  ZENG Jing  DAI Huanyun  WU Pingbo

(Traction Power State Key Laboratory, Southwest Jiaotong University, Chengdu 610031)

Abstract: A new scheme about flexible coupled radial bogie with independently rotating wheels is put forward. An expression about coupling stiffness of the flexible coupled radial bogie with independently rotating wheels is deduced by theoretic analysis. The simulation analysis shows that as long as the bogie’s coupled stiffness is selected correctly, whether external condition (curve radius and speed) changes, the leading and trailing wheelsets of the bogie can automatically run to radial location by the coordinated operation of the flexible coupled machine and the second suspension systems of the vehicle, which proves that the flexible coupled radial bogie surely takes on very good radial steering ability in complicated external condition. Comparing the flexible coupled radial bogie with the two-axle bogie and one-axle bogie, the dynamic performance of the flexible coupled radial bogie with independently rotating wheels is provided with prominent dominance of the three bogies, which shows that the flexible coupled radial bogie with independently rotating wheels possesses hugees exploitation potential.

Key words: Independently rotating wheel  Flexible coupled radial bogie  Steering capability  Dynamic performance

CLC No: U270.1

国家自然科学基金(50705079)、国家自然科学杰出青年基金(50525518)和国家重点基础研究发展计划(973计划, 2007CB714701)资助项目. Received 20070821, received in revised form 20071120

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