工程设计学报2018，Vol.25Issue(2)：151-158,8.DOI:10.3785/j.issn.1006-754X.2018.02.004
直接提钻工况下双斜撑长螺旋钻机桅杆稳定性分析
Stability analysis of the mast of continuous flight auger driller with double braces under direct-drill-lifting condition
摘要
Abstract
To analyze the stability of the mast of continuous flight auger driller with double braces under direct-drill-lifting condition,the deflection differential equations of the mast were estab-lished.With proper boundary conditions,the instability characteristic equations of the mast and the critical value of lifting drill were presented.The stability of ZLH43ZL(TB)-D180 continuous flight auger driller was analyzed,and the theoretical analysis results and the calculating results by ANSYS finite element method were compared.The results implied that the established instability characteristic equations were right and revealed that the instability critical value Fcrwas related to the factors such as the main and auxiliary supporting position parameters λ1and λ2,the mast sec-tion inertia moment I and the main hoisting wire rope angle θ.Meanwhile,Fcrfirst increased and then decreased with the increase of λ1and λ2,and the impact of the λ1was much bigger than the im-pact of λ2.With the increase of I,Fcrfirst increased rapidly,and then gradually eased.With the increase of θ(0°≤θ≤20°),Fcrincreased slowly.The conclusion can be expanded to analyzing the stability of the similar machinery structures in the context of engineering machinery.关键词
直接提钻工况/双斜撑/长螺旋钻机/失稳特征方程/ANSYS/失稳临界值Key words
direct-drill-lifting condition/double braces/continuous flight auger driller/instability characteristic equations/ANSYS/instability critical value分类
建筑与水利引用本文复制引用
胡均平,乔榆凯,李科军,胡慧雨..直接提钻工况下双斜撑长螺旋钻机桅杆稳定性分析[J].工程设计学报,2018,25(2):151-158,8.基金项目
国家自然科学基金资助项目(51175518) （51175518）
湖南省科技型中小企业技术创新基金立项项目(12C26214305029) （12C26214305029）
