基于虚拟样机技术的地下铲运机稳定性研究

发布时间：2018-11-13 16:49

【摘要】：21世纪地表浅部的矿业资源日益贫瘠甚至枯竭,采矿业逐步向地表的深部发展,地表无轨自行设备一地下铲运机得到了日趋广泛的应用。地下铲运机前后车体是通过纵向销轴连接在一起的,车体的结构不规则,稳定性并不理想,在斜坡或者更为颠簸的路面工作极易发生安全事故。但使用物理样机试验的方法并不具有可行性,这导致地下铲运机斜坡稳定行研究远远不够。产品设计人员运用虚拟样机技术可以在虚拟环境下对产品的受力情况和整体运动进行模拟,有了虚拟样机技术的支撑设计人员可以快速地分析出很多不同的方案,与此同时还可以进行对于物理样机来说难以进行或者无法实现的试验,最终得到的设计方案可以说是系统级的。虚拟样机技术的应用大大缩短了开发周期,并且明显提高了效率和涉及的质量。本文则结合多体系统动力学分析以及虚拟样机技术等,以某厂生产的2m3自行式地下铲运机为研究对象重点对纵向稳定性展开了研究。根据地下铲运机静态稳定性理论,对地下铲运机静态纵向稳定性以及静态横向一、二级稳定性进行了详细的分析,以寻求合理的实验方案；应用三维参数化设计软件SolidWorks建立简化的地下铲运机三维实体模型,探索了SolidWorks与机械系统动力学软件ADAMS之间数据传递的方法并将简化模型成功导入ADAMS中,在ADAMS中完成了简化的地下铲运机虚拟样机模型的创建并验证了该虚拟样机模型的合理性；通过大量的地下铲运机动力学仿真,结合以地下铲运机纵向稳定性评价指标,完成了外界因素(卸载高度、偏载程度、超载程度)对地下铲运机纵向稳定性影响的分析与评价,对操作者具有极大的指导和参考意义。
[Abstract]:In the 21 ~ (st) century, the mining resources in the shallow part of the earth's surface are increasingly poor or even exhausted. The mining industry is gradually developing to the deep part of the earth's surface, and the underground scraper, the surface trackless self-equipment, has been used more and more widely. The front and rear body of the underground scraper is connected by longitudinal pin shaft, the structure of the body is irregular and the stability is not ideal, so it is easy to happen safety accidents when working on the slope or on the bumpy road surface. However, the method of physical prototype test is not feasible, which leads to insufficient research on slope stability of underground scraper. Product designers can use virtual prototyping technology to simulate the force and overall motion of products in virtual environment. With the support of virtual prototyping technology, designers can quickly analyze many different schemes. At the same time, it is possible to carry out experiments that are difficult or impossible to implement for the physical prototype, and the final design scheme can be said to be system-level. The application of virtual prototyping technology greatly shortens the development cycle and improves efficiency and quality obviously. Based on the dynamic analysis of multi-body system and virtual prototyping technology, the longitudinal stability of 2m3 self-propelled underground scraper produced by a factory is studied in this paper. According to the static stability theory of underground scraper, the static longitudinal stability and static horizontal and secondary stability of underground scraper are analyzed in detail in order to find a reasonable experimental scheme. The simplified 3D solid model of underground scraper is established by using 3D parameterized design software SolidWorks. The method of data transfer between SolidWorks and mechanical system dynamics software ADAMS is explored, and the simplified model is successfully imported into ADAMS. The simplified virtual prototype model of underground scraper is built in ADAMS and the rationality of the model is verified. Through a large number of dynamic simulation of underground scraper, combined with the evaluation index of longitudinal stability of underground scraper, the influence of external factors (unloading height, degree of partial load, degree of overload) on longitudinal stability of underground scraper is analyzed and evaluated. It has great guidance and reference significance to the operator.
【学位授予单位】：北京邮电大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD422.4

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