千米立轴式岩芯钻机虚拟样机的设计与研究

发布时间：2018-02-27 11:41

本文关键词： 岩芯钻机虚拟样机技术有限元分析模态分析优化设计　出处：《河北科技大学》2015年硕士论文　论文类型：学位论文

【摘要】：立轴式钻机采用机械与液压混合驱动的方式,充分发挥两种传动方式的特长,具有良好的经济性与野外适应性,可广泛用于资源勘查、工程地质勘察与其它相关行业。工程机械设备传统的设计方法往往是采用“作图法”,这种方法效率低、计算量大且精度差;而用编程的方法虽然使计算精度得到提高,但程序通用性差、调试量大且可靠性也难以保证。随着计算机仿真技术的日益成熟,虚拟样机技术得到了广泛应用。本课题在充分调研国内外岩芯钻机的应用状况的条件下,结合我国岩芯钻探行业的实际情况,提出了立轴式岩芯钻机的设计方案,确定了钻机的主要设计参数。在实际设计过程中应用虚拟样机技术,在SolidWorks软件平台的基础上分别完成了钻机回转器、变速箱、分动箱、卷扬机、液压系统与机架的设计与建模工作,并最终成功装配整机。本课题分析了有限元分析法的数学原理,并在SW/Simulation平台下对钻机的关键受力部件——进给横梁进行了静力学分析研究;剖析了模态分析的理论基础,借助设计软件分析了机架的前五阶固有频率,并与外界激振频率进行数据对比后排除了机架发生共振的可能性。在静力学分析的基础上,进行了对卷筒的模型进行了轻量化优化设计。并对优化结果进行了详细的分析,确认了优化结果的正确性。
[Abstract]:The vertical shaft drilling rig adopts mechanical and hydraulic hybrid drive mode, fully exerts the specialty of the two transmission modes, has good economy and adaptability in the field, and can be widely used in the exploration of resources. The traditional design method of engineering machinery and equipment is usually "drawing method", which is low efficiency, large amount of calculation and poor precision, while the method of programming can improve the accuracy of calculation, while the traditional design method of engineering geological survey and other related industries is usually "drawing method", which has the advantages of low efficiency, large amount of calculation and poor precision. With the development of computer simulation technology, virtual prototyping technology has been widely used. According to the actual situation of core drilling industry in China, the design scheme of vertical shaft core drilling rig is put forward, and the main design parameters of drilling rig are determined. The virtual prototyping technology is applied in the actual design process. On the basis of SolidWorks software platform, the design and modeling of drilling rig gyroscope, gearbox, shunt box, hoist, hydraulic system and frame are completed, and the whole machine is successfully assembled. The mathematical principle of finite element analysis is analyzed in this paper. The statics analysis of feed beam, the key force component of drilling rig, is carried out on SW/Simulation platform, the theoretical basis of modal analysis is analyzed, and the first five natural frequencies of the frame are analyzed with the aid of design software. The possibility of resonance in the rear row is compared with the external excitation frequency. On the basis of static analysis, the model of the reel is designed by lightweight optimization, and the optimization results are analyzed in detail. The correctness of the optimization results is confirmed.
【学位授予单位】：河北科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P634.31

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