基于润滑机理的智能液压元件本体性能预测方法  

Prediction Method of Performance of Intelligent Hydraulic Components Based on Lubrication Mechanism

作　　者：刘思远[1,2] 王广达 孙红梅[3] 刘建勋 姜万录[1,2] LIU Siyuan;WANG Guangda;SUN Hongmei;LIU Jianxun;JIANG Wanlu(Hebei Provincial Key Laboratory of Heavy Machinery Fluid Power Transmission and Control,Qinhuangdao,Hebei,066004;Key Laboratory of Advanced Forging & Stamping Technology and Science(Yanshan University),Ministry of Education of China,Qinhuangdao,Hebei,066004;Beijing Vocational College of Electronic Science and Technology,Beijing,100000;Qinhuangdao GREEN Environmental Engineering Co.,Ltd.,Qinhuangdao,Hebei,066004)

机构地区：[1]燕山大学河北省重型机械流体动力传输与控制重点试验室,秦皇岛066004 [2]先进锻压成形技术与科学教育部重点试验室(燕山大学),秦皇岛066004 [3]北京电子科技职业学院,北京100000 [4]秦皇岛格瑞因环境工程有限公司,秦皇岛066004

出　　处：《中国机械工程》2020年第8期952-959,共8页China Mechanical Engineering

基　　金：河北省教育厅高等学校科技计划青年基金资助项目(QN2019001);国家自然科学基金资助项目(51505411,51875498);河北省自然科学基金资助重点项目(E2018203339)。

摘　　要：以液压泵为例,以其最为薄弱的环节——滑靴副为研究对象,并以滑靴磨损作为性能退化原因,结合滑靴磨损数学描述方程、泄漏流量公式和柱塞腔压力瞬时变化模型,建立了滑靴磨损过程的油膜润滑特性方程组;揭示了液压泵性能失稳失效机理,计算了失稳和失效临界点;对液压泵性能退化状态进行区域划分,分析液压泵不同状态下滑靴磨损量与油膜润滑特性参数及性能退化参数的变化规律,建立了性能预测模型;通过仿真分析验证理论模型的正确性,通过液压泵性能测试试验验证预测模型的有效性和预测精度,结果表明,所构建的模型能够精确预测液压泵性能。The hydraulic pump was taken as an example,and the slipper pair,the weakest link were the research object,and the wear of slipper was used as the causes of performance degradation.The oil film lubrication characteristic equations of the shoe wear processes were established by combining the mathematical description equation of the wear of slipper,the leakage flow formula and the instantaneous change model of piston chamber pressure.The failure mechanism of hydraulic pump performance was revealed and the failure critical points were calculated.The performance degradation states of hydraulic pump were divided into different regions,and the variation law of slipper wear,oil film lubrication characteristic parameters and performance degradation parameters of the hydraulic pump in different states were analyzed,a performance prediction model was established.The correctness of the theoretical model was verified by simulation analyses,and the validity and accuracy of the prediction model were verified by hydraulic pump performance tests.The results show that the built model may accurately predict hydraulic pump performance.

关 键 词：性能预测 液压泵 滑靴副 滑靴磨损 油膜润滑特性 

分 类 号：TH137.51[机械工程—机械制造及自动化]