摘要
基于挖掘机液压系统效率较低的现状,以某20 t双泵双回路液压挖掘机为样机,搭建液压系统可回收能量分布实验平台,在Matlab中建立液压系统和执行机构模型,通过典型挖掘循环下的仿真和实验,得出各个元件(动臂、斗杆、铲斗油缸以及回转马达)的可回收能量分布情况.结果显示可回收能量占液压系统总输入能量的21.1%,其中动臂势能和回转制动能分别占总可回收能量的72%和23.8%,是可回收能量的主要组成部分,表明对动臂势能和回转制动能进行能量回收是降低系统能耗的有效途径.
Based on the inefficiency of excavator hydraulic system,a 20-ton hydraulic excavator adopted double-pump and dual-circuit is taken as research object.The recoverable energy distribution experiment of hydraulic system is set up,and the models of multi-body work set and hydraulic system are built in MATLAB.After simulation and experimental studies in the standard work cycle,the recoverable energy distributions of each actuator （swing motor,boom,stick,bucket hydraulic cylinder） are calculated.The results show that recoverable energy reaches up to 21.1％ of total input energy of hydraulic system,in which the boom potential energy and swing braking energy occupy most of the recoverable energy accounting for 72％ and 23.8％ respectively,indicating the boom potential and swing braking energy recovery system is an effective way to reduce energy consumption.
出处
《郑州大学学报（工学版）》
CAS
北大核心
2014年第2期120-123,128,共5页
Journal of Zhengzhou University（Engineering Science）
基金
福建省科技重大专项资助项目(2008HZ0002-1)
关键词
液压挖掘机
可回收能量
分布
实验
动臂势能
回转制动能
hydraulic excavator
recoverable energy
distribution
experiment
boom potential energy
swing braking energy
