矿用液压缸动载特性的仿真及试验研究  

Simulation and Experimental Study on Dynamic Load Characteristics of Mine Hydraulic Cylinder

作　　者：唐小龙 王晓东[1,2] TANG Xiaolong;WANG Xiaodong(China Coal Research Institute, Beijing 100013,China;Test Branch of Coal Science and Technology Research Institute Corporation Ltd., Beijing 100013,China;State Key Laboratory of Efficient Mining and Clean Utilization of Coal Resource, Beijing 100013,China)

机构地区：[1]煤炭科学研究总院,北京100013 [2]煤炭科学技术研究院有限公司检测分院,北京100013 [3]煤炭资源高效开采与洁净利用国家重点实验室,北京100013

出　　处：《机床与液压》2021年第7期151-155,共5页Machine Tool & Hydraulics

摘　　要：基于AMESim仿真计算,综合软件中机械元件库、液压元件库及液阻库,建立了矿用液压缸动载加载系统的仿真模型,对动载条件下液压缸无杆腔的压力特性进行模拟分析,进行了液压缸动载过载的现场测试试验并同步监测无杆腔压力波动,仿真计算数据在一定误差范围内与试验数据吻合,验证了文中仿真模型搭建及参数设定的准确性。在此基础上通过修改仿真模型的技术参数,对矿用液压缸在不同工况条件下的动态特性进行仿真计算,对比不同工况下的液压缸无杆腔压力-时间曲线,得出结论:增大液压缸初撑压力以及无杆腔容积有利于增强液压缸的抗冲击能力;动载过载条件下安全阀超调量达到36%,1.2 s后完全泄压;液压缸动载过载冲击试验台蓄能器对液压缸压力特性的影响表现在随着蓄能器容积的增大,初期无杆腔压力峰值明显增大,后增强趋势逐渐放缓,蓄能器容积达到300 L后影响强度基本为0。Based on AMESim simulation calculation,synthesizing software mechanical component library,hydraulic component library and liquid resistance library,the simulation model of the mine hydraulic cylinder dynamic loading loading system was established,and the pressure characteristics of the hydraulic cylinder rodless cavity under dynamic loading conditions were carried out.In the simulation analysis,the field test of the hydraulic cylinder dynamic loading overload was carried out and the pressure fluctuation of the rodless cavity was monitored synchronously.The simulation calculation data were consistent with the test data within a certain error range,which verified the accuracy of the built simulation model and the parameter setting.On this basis,by modifying the technical parameters of the simulation model,the dynamic characteristics of the mining hydraulic cylinder under different working conditions were simulated,and the pressure-time curves of the rodless cavity of the hydraulic cylinder under different working conditions were compared.The initial pressure of the large hydraulic cylinder and the volume of the rodless cavity are beneficial to enhance the impact resistance of the hydraulic cylinder.Under the condition of dynamic loading overload,the overshoot of the safety valve reaches 36%,and the pressure is completely relieved after 1.2 s.The impact of hydraulic cylinder dynamic load overload impact test bench accumulator on the hydraulic cylinder pressure characteristics is manifested that with the increase of the accumulator volume,the initial peak of the rodless cavity pressure increases significantly,and the subsequent enhancement trend gradually slows down.After the volume reaches 300 L,the impact intensity is basically zero.

关 键 词：液压缸 动载特性 AMESIM仿真 试验研究 

分 类 号：TH137.51[机械工程—机械制造及自动化]