露天矿用钻机钻架结构强度  

Structural strength analysis of drilling frame for open-pit

作　　者：韩新平 靳春华[2] 苏荣华[2] 

机构地区：[1]阜新工大力为科技有限公司,辽宁阜新123000 [2]辽宁工程技术大学力学与工程学院,辽宁阜新123000

出　　处：《辽宁工程技术大学学报（自然科学版）》2013年第2期145-148,共4页Journal of Liaoning Technical University (Natural Science)

基　　金：辽宁省教育厅重点实验室资助项目(LS2010075)

摘　　要：针对钻机钻架使用过程中出现弯曲、断裂和扭胀的现象,应用Pro/E软件中有限元模块建立钻架有限元模型,对不同工况下,天车不同位置时"П"型截面钻架的力学性能进行数值模拟,并对正常钻进工况下天车不同位置时立柱等效应力、扭转应力和弯曲应力分布规律进行分析,找出钻架发生弯曲、断裂和扭胀的原因.研究结果表明:作为导轨两个立柱弯曲应力大,两个后立柱扭转应力大;钻架横隔上加强梁和横梁扭转应力相对较大,容易出现扭胀和断裂;两侧面斜缀弯曲应力相对较大,容易出现弯曲和断裂.Drilling frame is one of key components in a drilling rig. The bending, fracture and twist-expansion of drilling frame seriously affect the normal drilling operation. Using Pro/E, a drilling frame finite element model was developed in this study. The distribution laws of the equivalent stress, torsional stress and bending stress of H-type cross-section drilling frame were analyzed in a normal operation condition. The reasons for bending, fracture and twist-expansion of drilling frame were found. The study result shows that as guide rails the two stand columns bear bending stress, and the two back columns stand torsion stress. The torsion stress of tunic tissues and cross-girders is large and thus ease to cause the twists and rupture of drilling fame. The bending stress of lacing bars is large and ease to cause the bending and rupture of drilling fame.

关 键 词：露天矿 钻机 钻架 立柱 结构强度 有限元 应力分布 变形 

分 类 号：TD44[矿业工程—矿山机电]