基于水平推压工况的超大型正铲液压挖掘机工作装置优化设计  

Optimization Design of Equipment of Super-large Shovel Hydraulic Excavator Based on Horizontal Pushing Conditions

作　　者：邵荷镜 史青录[1] 王爱红[1] 程相 Shao Hejing;Shi Qinglu;Wang Aihong

机构地区：[1]太原科技大学机械工程学院,山西省太原市030024

出　　处：《工程机械》2023年第9期72-78,I0019,共8页Construction Machinery and Equipment

基　　金：山西省自然科学基金资助项目(20210302123217)。

摘　　要：以提高正铲液压挖掘机水平推压性能,简化驾驶员操作为目的,对带水平辅助液压缸(自动调平推压机构)的某超大型正铲液压挖掘机工作装置进行优化设计。将水平推压性能指标,即铲斗齿尖竖直方向位移变化量和切削后角变化量设为目标,选取和优化变量并确立约束条件,利用多目标遗传算法对正铲液压挖掘机工作装置进行优化设计,通过TOPSIS法筛选出期望最优解。对优化方案进行Adams仿真分析,仿真结果表明,推压轨迹接近理想水平,铲斗切削后角变化小,自动调平推压机构能够实现动臂液压缸和辅助液压缸闭合回路。With the purpose of improving the horizontal pushing performance of the shovel hydraulic excavator and simplifying the driver’s operation,the equipment of a super-large shovel hydraulic excavator with a horizontal auxiliary cylinder(automatic leveling and pushing mechanism)is optimized and designed.The horizontal pushing performance indexes,i.e.the vertical displacement change of the bucket tooth tip and the angle change after cutting,are set as the objectives,the variables are selected and optimized,the constraints are established,the multiobjective genetic algorithm is used to optimize the equipment of the shovel hydraulic excavator,and the expected optimal solution is screened out by TOPSIS method.Adams simulation analysis is carried out on the optimization plan,and the simulation results show that,the pushing trajectory is close to the ideal level,the angle change after bucket cutting is small,and the automatic leveling and pushing mechanism can realize closed loop of the boom cylinder and the auxiliary cylinder.

关 键 词：超大型正铲液压挖掘机 水平推压 工作装置 遗传算法 

分 类 号：TU621[建筑科学—建筑技术科学]