挖掘机回转电液能量回收系统仿真与试验  

Simulation and experimental research on electro-hydraulic energy recovery system of excavator rotation

作　　者：李曙[1] 龚进[1] 龚俊[1,2] 张大庆 刘昌盛[1,2] 胡鹏[1] 

机构地区：[1]中南大学高性能复杂制造国家重点实验室,湖南长沙410083 [2]山河智能装备股份有限公司国家级企业技术中心,湖南长沙410100

出　　处：《合肥工业大学学报（自然科学版）》2015年第5期581-586,共6页Journal of Hefei University of Technology：Natural Science

基　　金：国家科技支撑计划资助项目(2014BAA04B01)

摘　　要：文章以挖掘机节能研究为目的,提出了一种基于电液联合回收的挖掘机回收节能系统;为了从理论上分析和评价节能系统的性能,在分析各主要元件数学模型的基础上建立了电液联合回收系统仿真模型,从能量流与能量损失构成2个方面进行了仿真分析;为了验证系统的性能,在23t级液压挖掘机上搭建了基于电液联合回收的回转节能系统试验与测试平台,并进行了试验分析。仿真与试验结果表明:在一个回转工作周期内,起动溢流是能量损失的主要因素,约占损失能量的42%;回转能量回收率约为34.3%,在回收的能量中约有60%通过液压辅助泵直接输出到原有液压系统进行了再生。For the purpose of excavator energy saving, a kind of excavator energy saving system based on electro-hydraulic combined recovery is put forward. To theoretically analyze and evaluate the per- formance of energy saving system, the simulation model of electro-hydraulic combined recovery sys- tem is established based on the analysis of the mathematical model of the main components, and the system is simulated and analyzed from two aspects including energy flow and energy loss. In order to verify the performance of the system, the rotation energy saving system research and test platform based on electro-hydraulic combined recovery is built on 23 tonnage hydraulic excavator, and the test analysis is carried out. The simulation and experimental results show that in a rotation working cycle, the starting overflow is the main factor of energy loss, and it accounts for about 42% of the lost ener- gy; the rotation energy recovery rate is about 34. 3%, and about 60% of energy recycled is regenera- ted and output directly to the original hydraulic system by hydraulic auxiliary pump.

关 键 词：电液联合回收 液压挖掘机 回转制动 能量回收 AMESIM软件 

分 类 号：TU621[建筑科学—建筑技术科学]