潜孔钻机的结构设计及性能分析

发布时间：2018-03-31 19:09

本文选题：潜孔钻机　切入点：Pro/E　出处：《长安大学》2015年硕士论文

【摘要】：潜孔钻机主要用于矿山开采、建筑、水利、电站、建材、交通及国防建设等多种工程中。与常见的凿岩机相比,具有钻孔深、钻孔直径大、钻孔效率高、适应范围广等特点,是当前通用的大型凿岩钻孔设备。本文以潜孔钻机为研究对象,综述了潜孔钻机的国内外研究现状以及出现的问题,并针对国内潜孔钻机存在的问题对其部分结构进行重新的设计。首先,运用有限元分析理论,通过Pro/E建模和ANSYS有限元分析软件,对潜孔钻机的主要零部件进行静力学分析,得出了潜孔钻机零部件在不同工况时的受力情况。解决了现有国产潜孔钻机的安全系数过大的问题,为以后的钻机设计提供了完备的方法思路。其次,以机械结构改进原则为基础,通过对现有问题的分析,对潜孔钻机部分结构提出改进方案。运用有限元分析理论和机械结构动力学理论,对改进后的钻机结构进行静力学和模态分析,进而得出潜孔钻机的固有频率和相应振型,确保钻机在工作时不会产生共振现象。最后,通过机械结构优化方法,运用MATLAB工具箱对潜孔钻机的改进结构进行优化设计,找出改进结构的最优解,提高结构件的质量利用系数。同时,利用ANSYS对优化后的模型进行有限元静力学分析和整机的模态分析并与优化前的结构进行比较,得出优缺点。通过以上各项分析与研究,为提高潜孔钻机的工作性能提供了一定的理论参考依据和工程应用价值。
[Abstract]:The downhole drilling rig is mainly used in mining, construction, water conservancy, power station, building materials, traffic and national defense construction and other projects. Compared with the common drilling machine, it has the characteristics of deep drilling, large diameter, high drilling efficiency, wide adaptability and so on. In this paper, the research status and problems of submersible drilling rig at home and abroad are summarized. According to the problems existing in the domestic submersible drilling rig, the structure of the drill is redesigned. Firstly, the static analysis of the main parts of the submersible drilling rig is carried out by using the finite element analysis theory, Pro/E modeling and ANSYS finite element analysis software. The stress condition of the drilling rig parts under different working conditions is obtained. The problem of excessive safety factor of the existing domestic drill rig is solved, which provides a complete method for the design of the drill rig in the future. Secondly, Based on the principle of mechanical structure improvement, through the analysis of the existing problems, the improvement scheme of the submersible drilling rig is put forward, and the finite element analysis theory and the mechanical structure dynamics theory are used. The static and modal analysis of the improved drilling rig structure is carried out, and the natural frequency and the corresponding vibration mode of the submersible drilling rig are obtained, so as to ensure that the drilling rig will not produce resonance phenomenon. Finally, through the mechanical structure optimization method, The improved structure of the submersible drilling rig is optimized by using MATLAB toolbox, the optimal solution of the improved structure is found, and the quality utilization coefficient of the structural parts is improved. The finite element static analysis and modal analysis of the optimized model are carried out by using ANSYS, and the advantages and disadvantages are obtained by comparing with the structure before optimization. It provides a certain theoretical reference and engineering application value for improving the working performance of submersible drilling rig.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P634.31

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