【作者】 董平；

【导师】 金新灿；

【作者基本信息】 北京交通大学 ， 车辆工程（专业学位）， 2020， 硕士

【摘要】 近年来,随着我国提出的“一带一路”政策的快速实施,对跨区域货物和人员的输送能力有了更高的要求。并且我国高速列车的快速发展,加快了对变轨距高速列车的研发进度,这就对变轨距轮对的性能提出了更加严格的要求。变轨距测力轮对是针对变轨距列车轮轨力研究的重要工具,是对车辆动力学进一步研究的重要部分。本文的主要工作是研究转向架的变轨机理,设计出变轨距测力轮对的变轨锁紧机构及变轨配套装置,并提出对变轨距测力轮对连续测量测量的方法,最后通过仿真计算得出应力载荷传递系数。首先,介绍了变轨距轮对变轨的基本原理,相关机构的结构特点。为满足高速列车变轨后运行的稳定性和可靠性,针对变轨距转向架的锁紧机构进行研究分析,根据变轨距转向架的技术要求,设计出能够实现轮对轨距改变的转向架的锁紧机构,和与之匹配的地面机构,利用solidworks三维模拟软件建立了变轨距测力轮对的实体模型。其次,根据自扰大互扰小的原则,选取车轮垂向桥和横向桥的贴片位置。利用Hypermesh和ANSYS变轨距测力轮对进行网格划分和有限元计算,根据UIC510-5标准对轮对辐板打孔后进行强度校核。并且由于轮对需要实现变轨的需要,对车轴强度进行不同轨距的校核,并为用轴测法选取贴片位置做好理论基础。最后,对变轨距测力轮对依据轮测法和轴测法进行贴片和设计组桥方案,并建立与之对应的数学模型,提出连续测量变轨距测力轮对的理论方法。利用建立的测力轮对仿真模型,通过有限元软件的计算得出不同工况下的多组数据。根据轮测法得出垂向力和横向力的应力载荷系数;根据轴测法通过在车轴上选取多个测量截面,求解垂向力和横向力的应力载荷系数。最后根据变轨距测力轮对的结构特点制定出实际加工方案。图62张,表22个,参考文献50篇。更多还原

【Abstract】 In recent years,the belt and road policy has been implemented rapidly in China,which requires higher transport capacity of goods and personnel across the region.And the rapid development of high-speed trains in China has accelerated the research and development progress of high-speed trains with changeable gauge,which puts forward more stringent requirements for the performance of wheelsets with changeable gauge load measurement.The changeable gauge load measuring wheelset is the core sensor for the research of the wheel rail load of the changeable gauge train,and it is an important part for the further research of vehicle dynamics.The main work of this paper is to design and calculate the locking mechanism of the changeable gauge load measuring wheelset,and to study the measurement method of the changeable gauge load measuring wheelset.First of all,through the research on the locking mechanism of the existing changeable gauge bogies,aiming at the technical requirements of the changeable gauge bogies,the locking mechanism of the bogies which can realize the change of the track gauge of the wheelsets and the matching ground mechanism are designed.The solid model of the changeable gauge load measuring wheelsets is established by using Solid Works three position simulation software.Secondly,according to the principle of large self-disturbance and small mutualdisturbance,the patch positions of wheel vertical and horizontal bridges are selected.The Hypermesh and Ansys changeable gauge load measuring wheelsets are used for mesh generation and finite element calculation,and the strength of the wheel set spokes after drilling is checked according to UIC510-5 standard.And because the wheelset needs to change the track,the strength of the axle is checked with different track gauge,and the theoretical basis is made for selecting the placement of the patch by the axle measurement method.Finally,according to the wheel measurement method and the axle measurement method,the changeable gauge load measuring wheelset is pasted and designed,and the corresponding mathematical model is established.Based on the simulation model of the load measuring wheel set,a lot of data under different working conditions are obtained through the calculation of the finite element software.According to the wheel measurement method,the stress load coefficients of the vertical load and the transverse load are obtained;according to the shaft measurement method,the stress load coefficients of the vertical load and the transverse load are obtained by selecting multiple measurement sections on the axle.Finally,according to the structural characteristics of the changeable gauge load measuring wheel set,the actual processing scheme is worked out.更多还原