均载组合式小轮径货车转向架车轮型面优化设计研究

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振动与冲击 ›› 2024, Vol. 43 ›› Issue (6) : 248-254.

论文

曹玉峰1,2，张卫华1，祁亚运1,3，池茂儒1，王洪昆2

作者信息 +

Wheel profile optimization design of a small wheel diameter uniform load combination style of freight bogie

CAO Yufeng1,2,ZHANG Weihua1,QI Yayun1,3,CHI Maoru1,WANG Hongkun2

Author information +

文章历史 +

摘要

小轮径转向架技术是驼背运输车辆的关键技术，小轮径低地板驮背车车轮型面磨耗问题严重，对其动力学性能造成严重影响，为了进一步提升其服役性能，对小轮径低地板驮背车车轮型面进行优化设计。首先建立小轮径低地板驮背车动力学模型，然后利用轮径差反向设计方法对车轮型面进行优化，最后利用车辆动力学模型对优化后型面的车辆动力学性能和磨耗特性进行验证分析。结果表明：优化后型面进一步降低了车轮等效锥度，同时减小了轮轨法向接触应力。通过对比优化前后动力学特性，优化后车轮型面有效提升了空重车状态下的临界速度，空车临界速度较LM踏面提高23.3%，重车临界速度较LM踏面增大17.54%。同时优化后型面有效提升了车辆的平稳性和曲线通过性能，最后利用车轮磨耗模型计算了直线段和曲线段的车轮磨耗，优化后曲线外侧车轮磨耗最大深度减小54.8%，曲线内侧车轮磨耗最大深度减小48.13%，型面优化可以有效减小小轮径低地板驮背车直线段和曲线段的车轮磨耗，为抑制车轮磨耗，提升服役性能具有重要作用。

Abstract

Small-diameter wheel bogie technology is a key technology for humpback transport vehicles. The wheel wear problem of small wheel diameter low floor backpack freight car is serious and has a serious impact on its dynamic performance. In order to further improve its operation performance, the wheel profile optimized design of small wheel diameter low floor backpack freight car is carried out. Firstly, a small wheel diameter low floor backpack freight car vehicle dynamic model is established, then the wheel profile is optimized by using the wheel diameter difference inverse design method, and finally the vehicle dynamics model is used to verify the vehicle dynamics performance and wear characteristics of the optimized profile. The results show that the optimized profile further reduces the equivalent wheel conicity and reduces the wheel-rail normal contact stress. By comparing the dynamics before and after optimization, the optimized wheel profile effectively increases the critical speed of empty and heavy vehicles by 23.3% compared to the LM profile, and the critical speed of heavy vehicles by 17.54% compared to the LM profile. Finally, the wheel wear model was used to calculate the wheel wear in the straight and curved tracks. The maximum depth of wheel wear on the outside of the curve was reduced by 54.8% and the maximum depth of wheel wear on the inside of the curve was reduced by 48.13%. The optimization of the wheel profile can effectively reduce wheel wear in the straight and curved tracks of the small wheel diameter low floor backpack freight car, which has an important role in suppressing wheel wear and improving operation performance.

导出引用

曹玉峰1,2，张卫华1，祁亚运1,3，池茂儒1，王洪昆2. 均载组合式小轮径货车转向架车轮型面优化设计研究[J]. 振动与冲击, 2024, 43(6): 248-254

CAO Yufeng1,2,ZHANG Weihua1,QI Yayun1,3,CHI Maoru1,WANG Hongkun2. Wheel profile optimization design of a small wheel diameter uniform load combination style of freight bogie[J]. Journal of Vibration and Shock, 2024, 43(6): 248-254

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