【作者】 邹鹏；

【导师】 鄂明成；

【作者基本信息】 北京交通大学 ， 机械制造及其自动化， 2012， 硕士

【摘要】 随着我国高速铁路建设的开展,为提高综合国力形成我国高速列车产业并掌握其核心技术,拓展高速铁路技术的海外市场,科技部发布了《高速列车科技发展“十二五”专项规划》。考虑到高速铁路建设的特殊性,铁路桥梁在铁路线上占据约70%左右,相应的桥梁的安全检测和维护成为研究重点。因此,开发针对高速铁路桥梁检修和维护的检测车,提供高效安全的平台,显得至关重要。根据国内外公路桥梁检测车的较成熟经验,高速铁路桥的梁检测车造价昂贵,进行多次物理样机实验,工程实际的可行性有待商榷。为此将虚拟样机技术运用于高速桥梁检测车的开发,在虚拟环境中模拟桥梁检测车的作业情况,完成仿真试验并分析各种设计方案,直至获得最优方案,具有很强的可能性。随后根据最优方案做进一步分析,比如模拟外界干扰,为样车的最终制造做好铺垫。本文根据桥梁检测车的初步设计结构,利用SolidWorks进行了三维实体建模。随后将模型数据导入Hypermesh进行网格划分,对回转架进行ANSYS模态分析,分析其自身振型和振动频率数据。随后将桥梁检测车模型导入ADAMS中,定义刚体,添加约束,施加驱动,构件虚拟样机模型；根据工况,对其展开作业过程进行了运动学仿真；仿真过程中获得展开作业时系统整体质心的轨迹,各关键点处的受力情况,以此分析其作业稳定性,得到展开过程中的危险位置,为桥梁检测车设计提供数据支持,帮助桥梁检测车设计的最终方案确定。本文主要内容如下：(1)建立桥梁检测车整机、桥梁实体模型,添加约束、简化构件、添加运动函数,得到检测车虚拟样机模型,对其工作步位进行分析,防止产生工作干涉。(2)对回转架结构有限元结构进行模态分析,改进薄弱结构；通过前10阶模态的固有频率及振型,进行共振可能性分析。(3)对桥梁检测车主架、走行梁、回转架进行工位分析获取动态质心轨迹,结合关键点受力分析,初步判定检测车的倾覆可能性。更多还原

【Abstract】 With the continuous development of high-speed railway construction, in order to enhance the overall national strength, to formulate China’s high-speed train industry and master the key technology for expanding overseas markets, the Ministry of Science and Technology released technology development plan on railway. At the same time, high-speed railway construction will be in a favorable opportunity of development, for the specialization of high-speed railway construction, inspection and maintenance of high-speed bridges becomes a focus in the course of construction. High-speed railway bridge inspection vehicle provides efficient and safe platform. Therefore, the bridge inspection vehicle’ stability and cameras’selection, in order to ensure the quality of the crack meets the engineering requirements, is crucial.Based on the preliminary design of the bridge inspection vehicle, we utilize SolidWorks to get3D solid modeling, then mesh it through Hypermesh then carry out ANSYS modal analysis on key rotation truss. After all this we treat it with ADAMS, expand the operating process of the kinematic simulation, get the overall center of mass and the key point force, define the operating stability of the most dangerous position, the inspection simulation dates will do goods to the cameras’selection.The main content of this paper is as follows:(1) To build a bridge and the bridge inspection vehicle machine model with Solid Works, after this import the solid model into ADAMS to generate the rigid model, analyze under various load conditions.(2) Using ANSYS to establish a pedestrian truss structure model for modal analysis.(3)Generate rigid bodies to establish the virtual prototype model dynamic simulation and analyze the model under various loads. The frame structure of the dynamic response under various conditions of bridge stress will do goods to see the stability of working status. The core task is to obtain the dynamic center of mass in order to discuss the vehicle’s working stability.更多还原