负载敏感液压挖掘机作业循环时间建模与优化  

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

作　　者：邱清盈[1] 陆银[1] 冯培恩[1] 管成[1] 武建伟[1] 

机构地区：[1]浙江大学机械工程学系,杭州310027

出　　处：《农业机械学报》2011年第10期39-44,73,共7页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家高技术研究发展计划(863计划)资助项目(2010AA0444012;008AA04Z114);浙江省科技计划资助项目(2008C01033);江苏省科技计划资助项目(BA2008031)

摘　　要：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,即整机作业效率提高10.2%。与此同时,优化后的铲斗和斗杆最大实际挖掘力分别提高4.38 kN和3.61 kN,最大挖掘高度和最大挖掘半径分别增大189 mm和37 mm,从而实现了挖掘机全系统全性能的广义优化。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.

关 键 词：负载敏感 液压挖掘机 作业循环 优化 

分 类 号：TU621[建筑科学—建筑技术科学]