液压挖掘机动臂势能交互回收利用系统特性  

Characteristics of boom potential energy alternate recovery and utilization system of hydraulic excavator

作　　者：胡鹏[1] 朱建新[1,2] 刘昌盛 张大庆 HU Peng;ZHU Jian-xin;LIU Chang-sheng;ZHANG Da-qing(State Key Laboratory of High Performance Complicated,Central South University,Changsha 410083,China;R&D Center,Sunward Intelligent Equipment Co.Ltd.,Changsha 410100,China)

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

出　　处：《吉林大学学报（工学版）》2022年第10期2256-2264,共9页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家科技支撑计划项目(2014BAA04B01);湖南省战略新兴产业科技攻关项目(2019GK4014).

摘　　要：针对传统能量回收系统发热及由此带来的系统可靠性问题,设计了一种基于多液压缸的挖掘机动臂势能交互回收利用系统,并对其特性进行了研究。对动臂势能交互回收利用系统工作原理及能量特性进行分析,针对35 t级挖掘机作业过程中动臂势能的变化特征,进行基于液压缸和蓄能器的系统参数设计。进一步建立了挖掘机能量回收系统虚拟仿真平台,分别对系统运行特性和节能效率进行研究。最后,搭建能量回收系统测试平台,对系统可行性与能效特性进行测试。动臂升降单动作的仿真与试验结果表明,与常规挖掘机相比,该能量回收系统主泵输出的峰值压力降低了57.8%,系统节能效率为51.5%,同时整机操控性保持良好。Aiming at the problem of heating and reliability of traditional energy recovery system,a potential energy interactive recovery system of excavator boom based on multiple hydraulic cylinders was designed,and its characteristics were researched.The working principle and energy characteristics of the boom potential energy interactive recycling system were analyzed.According to the operation characteristics of the 35 t excavator and the change of boom potential energy,the system parameters were designed based on the hydraulic cylinder and accumulator.Furthermore,the virtual simulation model of excavator energy recovery was established to analyze the operation characteristics and energy-saving efficiency of the system.Finally,an energy recovery system test platform was built to test the feasibility and energy efficiency characteristics of the system.The simulation and test results of single action of boom lifting show that,compared with the conventional excavator,the peak pressure of the main pump output of the energy recovery system is reduced by 57.8%,the energy-saving efficiency of the system is 51.5%,while the controllability of excavator remains good at the same time.

关 键 词：机械电子工程 液压挖掘机 能量回收 运行特性 参数匹配 

分 类 号：TH39[机械工程—机械制造及自动化]