截齿截割角度对截割性能的影响研究  

Study on the Effect of Cutting Angle of Cutting Teeth on Cutting Performance

作　　者：刘大兵 何银东 LIU Dabing;HE Yindong(Sanshandao Gold Mine,Shandong Gold Mining(Laizhou)Co.,Ltd.,Laizhou 261400,Shandong,China;Zijin(Changsha)Engineering Technology Co.,Ltd.,Changsha 410208,Hunan,China)

机构地区：[1]山东黄金矿业(莱州)有限公司三山岛金矿,山东莱州261400 [2]紫金(长沙)工程技术有限公司,湖南长沙410208

出　　处：《黄金科学技术》2024年第1期91-99,共9页Gold Science and Technology

摘　　要：以悬臂式掘进机为主的机械开挖是实现金属矿山连续化开采、推动智能矿山建设的重要手段,截齿截割角度是影响截齿受力情况的重要参数,从而影响掘进机掘进效率。为了优化截齿参数,采用Rhino软件和PFC3D软件建立了截齿截割岩石模型,在对试验数据进行验证的基础上,开展了不同截割角度(45°、50°、55°、60°和65°)下截齿截割花岗岩数值模拟试验研究。结果表明:基于PFC3D软件的截齿模拟试验具有可靠的精度,模拟试验与室内试验结果之间的相对误差分别为13.59%和16.92%。同时,不同截割角度下截齿的受力情况不同,在55°时截齿截割角度能够得到较好的改善。The application of cantilever type roadheader in coal mines has shown great advantages,and gradually promoted in metal mines.However,the cutting teeth are subjected to huge loads and strong impacts in the process of cutting the rock body,which leads to serious wear and tear of the cutting teeth,thus restricting the further popularization and application of the cantilever type roadheader.In order to optimize the cutting angle and improve the force on the teeth,Rhino software and PFC3D software were used to establish a rock model of the cutting angle of the teeth,which was simulated and verified by the existing test data,and on the basis of which the linear cutting simulation of the teeth was carried out on the granite by considering the cutting angles of different modifications,such as 45°,50°,55°,60°,65°.The results show that the cutting simulation test based on PFC3D software has reliable accuracy,and the relative errors between the simulation test and the indoor test results are 13.59%and 16.92%,respectively.The force on the teeth is different under different cutting angles,and the cutting angle of the teeth can be improved at 55°.It provides a reference for the design of cutter teeth structure of cantilever type roadheader.

关 键 词：镐形截齿 PFC3D软件 截割角度 截割性能 截割力 悬臂式掘进机 

分 类 号：TD85[矿业工程—金属矿开采]