吊斗铲回转装置的动力学仿真及其关键部件的强度分析

发布时间：2018-02-21 10:09

本文关键词： 吊斗铲回转装置动力学仿真啮合力有限元分析　出处：《内蒙古科技大学》2015年硕士论文　论文类型：学位论文

【摘要】：吊斗铲是属于单斗挖掘机类的露天采矿设备，适合应用于大型以及特大型矿山挖掘作业的重型装备。吊斗铲的回转机构是其重要组成部分，在吊斗铲整个回转过程中，回转运动时间占其吊斗铲工作循环时间的60%以上。回转装置的性能直接影响吊斗铲的整机性能和露天矿的挖掘效率。因此，本文对吊斗铲回转装置的研究具有重要意义。本文首先介绍了吊斗铲及其回转装置的结构组成，工作原理，对其运动特性和回转过程中的受力状况进行了分析。用三维软件SolidWorks建立了正常工况和故障状态下的几何模型，并把其分别导入到ADAMS软件中，，在ADAMS环境下对吊斗铲进行了一系列的设置和加载，创建吊斗铲回转装置的虚拟样机模型。在动力学软件中对吊斗铲回转装置进行齿轮传动的接触分析，得到其回转循环过程中齿轮啮合力的变化状况和齿轮圈的受力情况。对两种情况下仿真出的变化曲线进行了对比分析，得出在在故障工况时比正常工况时，齿轮啮合力曲线图波动变化变大，齿轮间的啮合力较大，齿轮圈的受力也相对增大，同时回转平台也会没有正常情况下平稳。之后应用有限元分析软件对回转立轴和回转小齿轮进行了静强度分析校核，获得其应力和变形的情况，其强度满足要求，并为此类部件的结构设计提供参考。并在有限元软件中对回转立轴模态分析，得到其在齿轮啮合时产生的激振力不会造成回转立轴的共振情况，并从振型图得到回转立轴振动情况，其中下部靠近两端花键处振动较大，可能会影响小齿轮啮合平稳性，应予以重视。我国还没有设计生产出此类大型设备，对吊斗铲的相关研究也不多，我国矿藏丰富，需求量大，所以市场对这种高效率的开采设备也有极大需求，未来我国也会设计制造此类设备。以上得出的结论，为吊斗铲在实际使用和维护方面提供了参考，丰富了此类产品的研究资料，为我国未来设计和生产此类设备提供了些微帮助。
[Abstract]:Bucket shovel is a kind of open-pit mining equipment belonging to single bucket excavator, which is suitable for heavy equipment used in large and super large mining operations. The rotary mechanism of bucket shovel is an important part of it, and during the whole rotary process of bucket, The rotary motion time accounts for more than 60% of the working cycle time of the bucket shovel. The performance of the rotary device directly affects the whole performance of the bucket shovel and the mining efficiency of the opencast mine. Therefore, this paper is of great significance to the research of the rotary device of the bucket shovel. In this paper, the structure and working principle of the bucket shovel and its rotary device are introduced, and the kinematic characteristics and the stress condition in the process of rotation are analyzed. The geometric models under normal working condition and fault state are established by using the three-dimensional software SolidWorks. It was imported into ADAMS software, and a series of setting and loading of bucket shovel was carried out under ADAMS environment, and a virtual prototype model of bucket spatula rotary device was created. In the dynamic software, the contact analysis of the gear transmission is carried out on the rotary device of the bucket shovel. The change of the gear meshing force and the force of the gear ring during the rotary cycle are obtained. The simulation curves under the two conditions are compared and analyzed, and the results show that the change of the gear meshing force in the fault condition is more than that in the normal condition. The fluctuation of gear meshing force curve becomes larger, the meshing force between gears is larger, and the force of gear ring is relatively larger. At the same time, the rotating platform will not be stable under normal conditions. After that, the static strength analysis and checking of the rotating vertical shaft and the rotary pinion are carried out by using the finite element analysis software, and the stress and deformation of the rotating platform are obtained. The strength of the platform meets the requirements. It also provides a reference for the structural design of this kind of components. The modal analysis of the rotating vertical axis is carried out in the finite element software, and it is obtained that the excitation force generated by the gear meshing will not cause the resonance of the rotary shaft. The vibration of the rotating shaft is obtained from the vibration pattern, in which the vibration of the lower part near the two ends of splines is large, which may affect the meshing stability of the pinion gears, which should be paid more attention to. China has not yet designed and produced such large-scale equipment, and there is not much research on bucket shovels. Our country is rich in mineral deposits and in great demand. Therefore, the market also has a great demand for this kind of high-efficiency mining equipment. In the future, China will also design and manufacture this kind of equipment. The above conclusions provide a reference for the practical use and maintenance of the bucket shovel, and enrich the research data of this kind of products. It provides little help for the future design and production of this kind of equipment in our country.
【学位授予单位】：内蒙古科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD422

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