轮式装载机工作装置液压缸驱动力分析与优化

Optimization of the Driving Forces of Boom Cylinder and Tilting Cylinder of Wheel Loader

装载机工作装置是个复杂的多杆机构,其优化设计是多目标、多变量的设计过程。采用虚拟样机技术,以工作装置作业性能为约束条件,对转斗缸和动臂缸驱动力进行优化。首先分析工作装置作业性能,在工作装置虚拟样机中建立优化约束。其次分别以减小转斗缸和液压缸驱动力为目标,以对其影响较大的铰接点坐标为参数分别进行优化。优化结果减小了转斗缸和动臂缸驱动力,并且满足所有作业性能。

The working device of a loader is a complex multilink mechanism whose optimization and design is a multi-objective and multi-variable design process. Based on virtual prototyping,optimization was carried out to reduce the maximum driving forces of the boom cylinder and the tilting cylinder while guaranteeing overall performances. First,the performances of the working device were analyzed and set up in virtual prototype as optimization constraints. Then,optimizations were carried out with the target of reducing the maximum driving forces of the boom cylinder and the tilting cylinder. The result shows that the maximum driving forces were reduced remarkably while the overall performance met the requirement.