3E轴构架转向架的通用动力学要求  

General Dynamical Requirements of 3E-Axle Frame Bogie

作　　者：朴明伟[1] 赵钦旭[1] 方吉[2] 兆文忠[2] 

机构地区：[1]大连交通大学机械工程学院,辽宁大连116028 [2]大连交通大学交通运输工程学院,辽宁大连116028

出　　处：《大连交通大学学报》2010年第2期9-14,共6页Journal of Dalian Jiaotong University

基　　金：辽宁省教育厅2007年创新团队资助项目(2007T013)

摘　　要：为了更好地实现铁路货运的重载快捷发展目标,以双层集装箱车辆作为应用研究对象,利用刚柔耦合仿真分析手段进行了3E轴构架转向架100~135 km/h动力学性能分析.6轴双层集装箱车辆刚柔耦合分析表明：空载承载鞍滑动现象和重载中轴轮对稳定性将是其高速运营的主要性能问题.因而,确保空载轮对定位刚度、确保重载中轴轮对轮轨关系稳定和降低车体结构耦合振动响应水平应作为3轴构架转向架的通用动力学要求.为此,提出了如下三项技术对策：①1、3轴承载鞍应以45°倒面作为承载摩擦面,满足摩擦系数μe≥0.42,而中轴小承载鞍则以磨耗板进行减磨处理μ〈0.2;②以中轴轮对车轮轮缘减薄9 mm的LM修正踏面优化来提高轮轨匹配的等效锥度控制中轴轮对横移,进而降低转向架蛇行运动程度;③中轴轴箱增设斜楔摩擦减振以降低落下孔车体中部结构振动耦合响应.与原设计对比,该技术对策可以使车辆动态性能得到改善.In order to realize better the development objectives of heavy haul and transrapid freight railway transportation,the 100~135km/h dynamical performances of 3E frame bogie were analyzed by flex-rigid coupling simulation technologies with the application of double-deck container well cars.The simulations show that the bearing adaptor slip in tare and the 2nd axle wheelset stability in laden are the two main problems in high-speed running performances.Therefore,the wheelset locating stiffness in tare and wheel/rail interaction stability in laden should be guaranteed as the general dynamical requirements of 3E frame bogie.For this reason,following three technical strategies are proposed：firstly,the bearing adaptors of the 1st and 3rd axles should bear the weight on 45° fillet so that the effective friction coefficient μe≥0.42,and the one of the 2nd axle should be inserted by anti-friction lining to decrease the μ0.2;secondly,the wheel tread LM modifications of the 2nd axle wheelset should be optimized to increase the equivalent conicity and control its lateral displacements to reduce the extension of bogie hunting motion;thirdly,the axlebox of the 2nd wheelset should be added with the wedge-friction damping to diminish the possibility of the coupling responds of the well car mid-structural modal vibrations.Compared with the original design,these strategies can further impove the vehihicle dynamical performances.

关 键 词：3E轴构架转向架 双层集装箱车辆 承载鞍 LM车轮踏面 

分 类 号：U270.33[机械工程—车辆工程]