移动式破碎站履带行走装置刚柔耦合动力学研究

发布时间：2018-03-27 15:52

本文选题：移动式破碎站　切入点：履带行走装置　出处：《吉林大学》2015年硕士论文

【摘要】：本论文在国家高技术研究发展计划（863计划）项目“大型露天矿采矿技术与装备”（No.2012AA062002）的资助下开展研究。对移动式破碎站履带行走装置进行了研究，通过将履带架柔性化的刚柔耦合动力学分析，得到了四种工况下履带架动态的位移云图、应力云图和履带行走装置的驱动转矩，通过对云图的分析，得出了各工况下的履带架应力较大的危险区域；提出了标准化的履带行走装置驱动轮、支重轮、履带板和导向轮强度分析方法。通过查阅国内外相关文献，阐述了履带行走装置国内外研究现状，，介绍了移动式破碎站对提高矿产资源开采效率的重要作用，对履带行走装置的研究方法进行了总结和对比，分析了各研究方法的优缺点，基于移动式破碎站承载的复杂性，提出了用刚柔耦合动力学分析方法对其履带行走装置进行分析。理论计算得出了在平路直行和坡路直行工况下履带行走装置的驱动转矩并通过解析法计算了平衡梁和支重轮所受载荷情况，为下一步的分析提供支持。基于多体动力学仿真软件RecurDyn和有限元分析软件ANSYS创建了以履带架为柔性体的移动式破碎站履带行走装置的刚柔耦合动力学模型，模拟平路直行、坡路直行、原地转向和单边制动转向四种运行工况，得到了四种工况下履带架动态位移、应力云图和驱动转矩，分析并解释结果产生的原因。对失效会直接影响机器的正常运行的部件——驱动轮、支重轮、履带板和导向轮进行强度分析以验证其强度是否满足要求。将关键部件的有限元分析步骤进行总结，将其作为移动式破碎站履带行走装置关键部件强度分析的标准化方法，为以后的设计和制造提供了参考。所得结论表明，文中所用的刚柔耦合动力学分析方法和标准化的履带行走装置关键部件强度分析方法能够得出所需的结果，可以为研究人员研究履带行走装置提供参考。
[Abstract]:In this paper, the research is carried out under the financial support of the National High Technology Research and Development Program No. 863) project, "Mining Technology and equipment for Large-scale Open-pit Mines" No. 2012AA062002.The mobile caterpillar walking device of crushing station is studied. By analyzing the flexible rigid-flexible coupling dynamics of the track frame, the dynamic displacement cloud map, stress cloud map and driving torque of the crawler moving device are obtained under four working conditions, and through the analysis of the cloud diagram, the dynamic displacement cloud diagram, the stress cloud map and the driving torque of the crawler walking device are obtained. In this paper, the dangerous areas where the stress of the crawler frame is large are obtained, and a standardized strength analysis method for the driving wheel, the supporting wheel, the track board and the guide wheel of the crawler walking device is put forward. By referring to relevant documents at home and abroad, this paper expounds the research status of crawler walking device at home and abroad, introduces the important role of mobile crushing station in improving the mining efficiency of mineral resources, and summarizes and compares the research methods of crawler walking device. The advantages and disadvantages of each research method are analyzed. Based on the complexity of load carrying of mobile crushing station, a rigid flexible coupling dynamic analysis method is proposed to analyze the crawler moving device. The driving torque of the crawler walking device under the conditions of horizontal and sloping road is calculated theoretically, and the load on the balance beam and the supporting wheel is calculated by analytical method. Based on the multi-body dynamics simulation software RecurDyn and the finite element analysis software ANSYS, the rigid-flexible coupling dynamic model of track walking device of mobile crushing station with crawler frame as flexible body is established, and the flat path is simulated. The dynamic displacement, stress cloud diagram and driving torque of the tracked frame are obtained under four operating conditions, such as straight slope, in-situ steering and single side braking steering, and the causes of the results are analyzed and explained. The strength analysis of driving wheel, supporting wheel, track board and guide wheel, which will directly affect the normal operation of the machine, is carried out to verify whether the strength meets the requirements. The finite element analysis steps of the key components are summarized. It is used as a standardized method for strength analysis of the key components of the crawler walking device in a mobile crushing station, which provides a reference for the design and manufacture in the future. The results show that the rigid-flexible coupling dynamic analysis method and the standardized strength analysis method of the key components of the crawler walking device can obtain the required results and can provide a reference for researchers to study the crawler walking device.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD451

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