一种新型高炉布料器及其运动和应力分析

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

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曟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 spatial-linkage-based distributor was designed since the complexity and large space oc- cupation 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 trajecto- ry 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 reouirements of an infinite fatigue llfe_