负载敏感液压挖掘机作业循环时间建模与优化

针对负载敏感系统特点和挖掘机工作性能要求,以液压多路阀最大开口面积为主要设计变量,以作业循环时间为主要优化目标,以其他设计要求为主要约束,建立了负载敏感型液压挖掘机作业循环时间的分析和优化模型.以现有某型号挖掘机为例,采用仿生物进化法进行优化设计,结果表明该机作业循环时间由优化前的14.04 s缩短为12.61 s,即...

Modeling and Optimization of Working Cycle Time for Load Sensing Hydraulic Excavator

An optimization model for load sensing hydraulic excavator was established, in which the largest flow areas of hydraulic multi-way valves were taken as main design variables and working cycle time was taken as the main objective while the other design requirements were used as main constraint conditions. An optimizing example was presented. The result showed that the cycle time was reduced from 14.04 s to 12.61 s. Meanwhile, most of the other performance indexes were also improved. The largest optimized digging force of bucket cylinder and arm cylinder were increased by 4.38 kN and 3.61 kN, respectively. The largest digging height and the largest digging radius were increased by 189 mm and 37 mm, respectively. The generalized optimization of entire system and overall performance for excavator was realized.