Abstract: Through 3d ANSYS software, the belt pumping unit 3d model was established, the belt pumping unit structure was analyzed. Got the support maximum stress and displacement distribution maps, got some conclusion by analyzing the results. Based on this for the pumping unit for structure optimization design, three kinds of improved models was put forward, though the three kinds of models analysis, got the three models of the displacement and stress distribution maps. The results show that even the oil pumping unit design meet the requirements, it also can proceed the further optimization, changing the stress smaller angle stress model and raking prop, strengthen the main force position, not only greatly improve the stress state, but also make the structure more reasonable, economy applicable. 

Key words: Belt pumping unit , Finite element , Structure optimization ,  Design 

摘要： 通过三维ANSYS软件建立皮带抽油机机架的三维模型,运用该软件对皮带抽油机架结构进行分析,
得到机架最大应力和位移的分布云图,由分析结果得到一些结论。在此基础上对抽油机机架进行结构优化,提出3
种改进结构模型,对3种结构模型进行分析,得到相应的位移和应力分布云图。结果表明:即使抽油机的结构设计符
合要求,也可进行进一步的结构优化,更改斜支撑结构和角钢型号,对主要受力位置进行改进,改善受力状态,结构
会更趋于合理,经济适用。

关键词: 皮带抽油机 , 有限元 , 结构优化 , 设计