Analysis of steering performance of differential coupling wheelset  

作　　者：Xingwen Wu Maoru Chi Jing Zeng Weihua Zhang Minhao Zhu 

机构地区：[1]State Key Laboratory of Traction Power, Southwest Jiaotong University

出　　处：《Journal of Modern Transportation》2014年第2期65-75,共11页现代交通学报（英文版）

基　　金：supported by the National Key Technology R&D Program of China (No. 2009BAG12A02);the National Basic Research Program of China (No. 2011CB711106);the Program for Innovative Research Team in University (No. IRT1178);the Program for New Century Excellent Talents in University (No. NCET-10-0664);the National Key Technology R&D Program (No. 2009BAG12A01)

摘　　要：In order to improve the curving performance of the conventional wheelset in sharp curves and resolve the steering ability problem of the independently rotating wheel in large radius curves and tangent lines, a differential cou- pling wheelset （DCW） was developed in this work. The DCW was composed of two independently rotating wheels （IRWs） coupled by a clutch-type limited slip differential. The differential contains a static pre-stress clutch, which could lock both sides of IRWs of the DCW to ensure a good steering performance in curves with large radius and tangent track. In contrast, the clutch could unlock the two IRWs of the DCW in a sharp curve to endue it with the characteristic of an IRW, so that the vehicles can go through the tight curve smoothly. To study the dynamic performance of the DCW, a multi-body dynamic model of single bogie with DCWs was established. The self-centering capability, hunting stability, and self-steering performance on a curved track were analyzed and then compared with those of the conventional wheelset and IRW. Finally, the effect of coupling parameters of the DCW on the dynamic performance was investigated.In order to improve the curving performance of the conventional wheelset in sharp curves and resolve the steering ability problem of the independently rotating wheel in large radius curves and tangent lines, a differential cou- pling wheelset （DCW） was developed in this work. The DCW was composed of two independently rotating wheels （IRWs） coupled by a clutch-type limited slip differential. The differential contains a static pre-stress clutch, which could lock both sides of IRWs of the DCW to ensure a good steering performance in curves with large radius and tangent track. In contrast, the clutch could unlock the two IRWs of the DCW in a sharp curve to endue it with the characteristic of an IRW, so that the vehicles can go through the tight curve smoothly. To study the dynamic performance of the DCW, a multi-body dynamic model of single bogie with DCWs was established. The self-centering capability, hunting stability, and self-steering performance on a curved track were analyzed and then compared with those of the conventional wheelset and IRW. Finally, the effect of coupling parameters of the DCW on the dynamic performance was investigated.

关 键 词：Differential coupling wheelset Independently rotating wheel Conventional wheelset Steering performance 

分 类 号：U270.1[机械工程—车辆工程]