一种新型高炉布料器及其运动和应力分析

针对无料钟炉顶布料器结构复杂、占用空间大的缺点,设计了一种基于空间连杆机构的布料器。对布料器结构进行合理简化并建立数学模型，采用ADAMS进行了特定轨迹下的运动仿真，联合MATLAB进行非线性拟合,求出摆动液压缸的控制方程。所研究的布料器工作环境温度为200~600℃且长期承受循环冲击载荷作用,其最常见的失效形式是疲劳失效。基于有限元分析软件ANSYS对布料器危险零件进行强度计算并对其各节点按Goodman-Smith疲劳极限图进行疲劳评定。分析表明：该布料器最大布料角度为40°,布料相对误差小于0.05%，其结构强度满足无限疲劳寿命要求。

A New Blast Furnace Distributor and Analyses of Its Movement and Stress

A spatial-linkage-based  distributor was designed  since the complexity and large space occupation of  the bell-less  top  equipment.The authors   simplified the fabric construction and developed a mathematical  model,the governing equations of rotary cylinder was obtained after the specific  trajectory motion simulation using ADAMS  as  well  as the  nonlinear  fitting with MATLAB.The distributor discussed herein  was long subjected to cyclic impact load at 200~600℃,fatigue failure was the most common failure mode.Strength calculations of dangerous parts and fatigue assessments of their nodes were conducted using ANSYS,a software of  which was based on finite element analysis.Analysis shows that the largest fabric angle of this distributor is of  40°and the relative error is less than 0.05%,the structural strength can meet the requirements of an infinite fatigue life.