飞轮储能蓄能器挖掘机动臂设计及负载特性分析  

Analysis of excavator arm and load characteristics using flywheel energy storage accumulator

作　　者：李竞克[1] 王强 LI Jingke;WANG Qiang(Department of Civil Engineering,Henan Polytechnic of Architecture,Zhengzhou 450064,Henan,China;School of Information Engineering,Henan University of Science and Technology,Zhengzhou 452370,Henan,China)

机构地区：[1]河南建筑职业技术学院土木工程系,河南郑州450064 [2]河南科技大学信息工程学院,河南郑州452370

出　　处：《中国工程机械学报》2024年第3期337-340,357,共5页Chinese Journal of Construction Machinery

基　　金：河南省高等教育教学改革研究与实践项目(2019-740)。

摘　　要：对飞轮储能蓄能器进行分析,在动臂驱动系统中加入了蓄能器以及轴向柱塞马达,以实现储存更多挖掘机动臂能量和节能控制的效果。研究利用速度传感器把测试得到的负载速度信号传输到比较器中,根据检测数据完成柱塞马达排量的实施调节功能,最终达到稳定的运行速度。研究结果表明:挖掘机阀控系统中选择一个循环下的液压执行元件进行能量利用率分析,执行元件的能量利用率达到了主泵输出的近81%,动臂能量回收占比为17.5%,回转机构的能量回收比例达到主泵输出能量8.9%。负载从位移为0的初始状态发生线性增大,表现出了稳定的运动性能,最终达到2.8 m的位移。环形活塞的压力与位移之间呈现线性变化的特征。位移由0提高到172 mm,压力则由2.1 MPa提高到3.2 MPa,实现了稳定的控制性能。In order to store more energy of excavator arm,the flywheel energy storage accumulator is analyzed,and the accumulator and window axial piston motor are added into the boom drive system to achieve the effect of energy saving control.The load speed signal obtained from the test is transmitted to the comparator by the speed sensor,and the displacement of the piston motor is adjusted according to the test data,finally achieving a stable running speed.The research results show that a hydraulic actuator under circulation is selected to analyze the energy utilization rate of the excavator valve control system.It was found that the energy efficiency of the actuator reached nearly 81% of the main pump output.The energy recovery ratio of the movable arm is 17.5%,and the energy recovery ratio of the rotary mechanism reaches 8.9% of the output energy of the main pump.The load increases linearly from the initial state of zero displacement,showing a stable motion performance,and finally reaches a displacement of 2.8 m.The pressure and displacement of the annular piston change linearly.The displacement increases from 0 to 172 mm,the pressure increases from 2.1 MPa to 3.2 MPa,and the stable control performance is realized.

关 键 词：液压挖掘机 飞轮储能蓄能器 AMESIM仿真 动臂 负载特性 

分 类 号：TH137[机械工程—机械制造及自动化]