斗轮堆取料机俯仰机构的机构-结构一体化优化设计  

Integrated Optimum Design of Mechanism-Structure for the Pitch Mechanism of Bucket-Wheel Stacker-Reclaimer

作　　者：尹来容[1] 何天赞 许鹏 陈敏慧 YIN Lai-rong;HE Tian-zan;XU Peng;CHEN Min-hui(Changsha University of Science&Technology,College of Automotive and Mechanical Engineering,Hu’nan Changsha 410114,China;Hu’nan Changzhong Machinery Co.,Ltd.,Hu’nan Changsha 410016,China)

机构地区：[1]长沙理工大学汽车与机械工程学院,湖南长沙410114 [2]湖南长重机器股份有限公司,湖南长沙410016

出　　处：《机械设计与制造》2023年第12期161-165,169,共6页Machinery Design & Manufacture

基　　金：国家自然科学基金青年项目(51705034);湖南省教育厅优秀青年基金(20B017);湖湘青年科技创新人才项目(2020RC3035);长沙市杰出创新青年培养计划(2019cskj014)。

摘　　要：为了解决工程机械传统设计中只考虑机构或结构单一元素的优化问题,提出一种综合考虑机构和结构的轻量化设计方法。对斗轮堆取料机的俯仰机构进行运动学和静力学分析,选取合适的设计变量和约束条件,以俯仰机构的总重量最小为目标函数建立了优化模型。同时考虑到工程机械中常使用型材作为主要支承件,构造了离散的型材变量与连续变量映射关系的连续阶梯函数。优化后俯仰机构的总质量明显减少,并对优化前和优化后的俯仰机构进行了对比分析。结果表明:所构造的函数不仅起到了连续变量结果进行过滤的效果,还达到了函数的离散变量连续化的效果;优化后俯仰机构的总质量、配重、斗轮的角加速度、液压缸驱动力以及各杆的受力等都得到了优化。With the aim of solving the optimization problem that only considers a single element of mechanism or structure in the traditional design of construction machinery,a lightweight design method that integrates consideration of mechanism and structure is proposed.The kinematic and static analyses are performed on the pitching mechanism of the bucket wheel stacker,suitable design variables and constraints are selected,and an optimization model is established with the minimum total weight of the pitching mechanism as the objective function.Considering that profiles are often used as the main support parts in construction machinery,the continuous step function of the mapping relationship between discrete profile variables and continuous variables is constructed.The total mass of the pitching mechanism is obviously reduced after optimization,and the comparison analysis of the pitching mechanism before and after optimization is carried out.The results demonstrate that the constructed function not only has the effect of filtering the results of continuous variables,but also achieves the effect of continuousization of discrete variables of the function.The total mass of the pitching mechanism,the counterweight,the angular acceleration of the bucket wheel,the driving force of the hydraulic cylinder and the force of each rod were all optimized after the optimization.

关 键 词：斗轮堆取料机 机构 结构 优化 轻量化 阶梯函数 

分 类 号：TH16[机械工程—机械制造及自动化] TH122