矿用自卸车轮边行星传动机构模糊可靠性优化  

Fuzzy Reliability Optimization of Mining Dump Truck Wheel Edge Planetary Transmission Mechanism

作　　者：罗天洪[1] 江礁 罗文军[2] 林超[2] 

机构地区：[1]重庆交通大学机电与汽车工程学院,重庆400074 [2]重庆大学机械传动国家重点实验室,重庆400030

出　　处：《机械传动》2014年第8期63-67,138,共6页Journal of Mechanical Transmission

基　　金：国家自然科学基金(51275537);中央高校基本科研业务费(NO.CDJZR10280006)

摘　　要：针对矿用自卸车电动轮边行星轮系寿命低以及灵活性不够的问题,提出一种基于模糊可靠性的系统级优化方法,以齿轮齿宽和行星轮系体积最小为目标进行优化。考虑到优化过程中不确定性和模糊性对电动轮边行星轮系可靠性的影响,建立了目标耦合变量、系统设计变量、全局共享变量的系统级优化模型。根据矿用自卸车电动轮边行星轮系的载荷程度、环境程度、技术水平、运行周期建立模糊集理论的权重集。对影响行星轮系可靠性的因素进行综合评价,并对其构建模糊评价矩阵,最后得出模糊权重向量。运用模糊可靠性的系统级优化,对齿轮齿宽和行星轮系体积最小进行求解。结果表明,考虑模糊可靠性的系统级优化方法求得的最优解提高了系统的可靠性,也降低了矿用自卸车行星轮系的体积,使行星轮系更加紧凑。以某矿用车电动轮行星轮系为例,证明该方法的可用性。With a purpose of the minimum gear tooth width and the smallest planetary gear train volume,a fuzzy reliability of system-level optimization method is proposed to solve problems of the short life and insufficient flexibility of electric wheel planetary gear train of the mining dump truck.Considering the uncertainty and ambiguity of an optimization process affect the reliability of the electric wheel planetary gear train,a system-level optimization model is established for the target coupling variable,system design variable and global shared variable.According to load level,degree of environmental,technologic level and operation cycle of the electric wheel planetary gear train of the mining dump truck,the weight set of fuzzy set theory is established.Before drawing a conclusion of fuzzy weight vector,an integrated evaluation of factors that affect the reliability of the planetary gear train and constructs fuzzy evaluation matrix is presented.A fuzzy reliability system-level optimization method is used for the narrowest gear tooth width and the smallest planetary gear train.The result shows that,with the optimal solution for the fuzzy reliability system-level optimization method,the reliability of the system is raised,the volume of the mining dump truck planetary gear train is reduced and the planetary gear train is more compact.An example of electric wheel planetary gear train of a mine car is taken to prove that the method is available.

关 键 词：矿用自卸车 行星轮系 模糊可靠性 系统级优化 

分 类 号：TD50[矿业工程—矿山机电] TH132.425[机械工程—机械制造及自动化]