摘要
针对液压挖掘机动臂机构下放时产生大量能量损失问题,提出一种利用蓄能器作为储能元件的新型动臂势能回收液压系统;应用ADAMS和AMEsim软件建立该势能回收系统的联合仿真模型,通过实车试验对仿真结果进行验证,针对柱塞马达转速大及能量转换机构效率低这一问题,对势能回收液压系统进行改进,对柱塞马达进行参数匹配。结果表明:动臂势能回收率为22.6%;仿真与试验结果的误差为8.84%,论证了液压系统的合理性,以及联合仿真模型准确、可信性;柱塞马达最大转速由3 626.5 r/min减小至2 955.1 r/min,能量转换机构的效率由85%增大至91%。
In view of large energy loss caused by the boom mechanism of a hydraulic excavator,a new hydraulic system of energy recovery with accumulator as energy storage elements was proposed. A joint simulation model of the potential energy recovery system was established by using ADAMS and AMEsim softwares. The simulation results were verified by a real vehicle test. Aiming at the problem that the speed of the piston motor was large and the efficiency of the energy conversion mechanism was low,the hydraulic system of energy recovery was improved,and parameters of the piston motor were matched. The results show that the recovery rate of the boom potential energy is 22.6%. The error between simulation and test results is 8.84%,the rationality of the hydraulic system as well as the accuracy and credibility of the simulation model are proved. The maximum speed of the piston motor decreses from 3 626.5 r/min to 2 955.1 r/min,and the efficiency of energy conversion mechanism increases from 85% to 91%.
作者
付春雨
邹广德
FU Chunyu;ZOU Guangde(School of Transportation and Vehicle Engineering,Shandong University of Technology,Zibo 255049,China)
出处
《济南大学学报（自然科学版）》
CAS
北大核心
2018年第4期297-304,共8页
Journal of University of Jinan(Science and Technology)
基金
国家"十一五"科技支撑计划项目(2007BAF18B01)
关键词
液压挖掘机
动臂势能回收
蓄能器
联合仿真
柱塞马达
hydraulic excavator
boom potential energy recovery
accumulator
joint simulation
piston motor
