工程设计学报Issue(5)：439-443,5.DOI:10.3785/j.issn.1006-754X.2014.05.006
典型工况下冲击破岩掘进机工作机构力学特性研究
Study on mechanical properties of roadheader working mechanism for impacting and crushing rock under typical conditions
摘要
Abstract
In order to explore mechanical characteristics of roadheader working mechanism for im-pacting and crushing rock under typical conditions ,then to find the weak link and to provide the basis for improvement ,a three-dimensional solid model of the working mechanism was estab-lished by means of Pro/E and a mechanical model of crushing rock of the impact hammer w as ex-ported ,a penetrable force of crushing rock was obtained according to the stress wave theory and assembly language of Matlab .The process of two drill rods crushing from nonsynchronous to synchronous was analyzed by using ANSYS when the working mechanism impacted on the top right corner of a tunnel .The research showed that the stress difference of two drill rods ,the torque and torsional deformation of working mechanism decreased gradually to the same during the process .The stress concentration appeared on the hinge of swing bearing ,boom and lifting-swinging cylinder ,also on the hinge spot of the rocker arm ,boom and boom-cylinder .The swing bearing was the weakness of the working mechanism ,and the maximum deformation happened on the head of hammer .T he offset loads leaded to the obvious deformation of drill bit ,and the dan-gerous zone of boom stress located on the offset load side ,which had a great influence on the me-chanical properties of the mechanism .关键词
掘进机/工作机构/冲击/偏载/有限元/应力Key words
roadheader/working mechanism/impact/offset load/finite element/stress分类
矿业与冶金引用本文复制引用
李晓豁,郭娜,郑有山,王金兴,杨杰..典型工况下冲击破岩掘进机工作机构力学特性研究[J].工程设计学报,2014,(5):439-443,5.基金项目
国家自然科学基金资助项目（59774033）；辽宁省第二批科学技术计划项目（2008403010）；中国煤炭工业协会科学技术研究指导性计划项目（M T K J2011-325）． （）
