大型液压系统在负载冲击下的稳定性  

Stability of Large Hydraulic System Under Load Impact

作　　者：王留根 赵静一[1] 王建军[1,3] 刘航[1] 王大江 刘培勇 张宇 WANG Liu-gen;ZHAO Jing-yi;WANG Jian-jun;LIU Hang;WANG Da-jiang;LIU Pei-yong;ZHANG Yu(School of Mechanical Engineering,Yanshan University,Qinhuangdao,Hebei 066004;Tolian Heavy Industry Vehicle Co.,Ltd.,Qinhuangdao,Hebei 066004;Anhui Technical College of Mechanical and Electrical Engineering,Wuhu,Anhui 241002)

机构地区：[1]燕山大学机械工程学院,河北秦皇岛066004 [2]秦皇岛天业通联重工科技有限公司,河北秦皇岛066004 [3]安徽机电职业技术学院,安徽芜湖241002

出　　处：《液压与气动》2020年第1期27-31,共5页Chinese Hydraulics & Pneumatics

基　　金：国家自然科学基金(51675461)

摘　　要：针对1700 t架桥机调试中支腿油缸在负载冲击下出现的失稳问题,从含气量对油液有效弹性模量的影响方面进行理论分析,并采用AMESim软件对不同含气量条件下的支腿液压系统进行仿真分析,将仿真结果和实际结果进行对比,验证仿真模型正确性。提出为支腿油缸提前施加预压力的解决方案,并对该解决方案进行了仿真验证。Aimed at the instability problem of leg cylinder under load impact during commissioning of 1700 t bridge erecting machine,the influence of gas content on effective elastic modulus of oil is analyzed theoretically.The hydraulic system of leg under different gas content is simulated and analyzed by AMESim software.The simulation results are compared with the actual results to verify the correctness of the simulation model.A solution to pre-pressure the outrigger cylinder in advance is proposed,and the solution is verified by simulation.

关 键 词：架桥机 液压系统 支腿 故障 弹性模量 

分 类 号：TH137.9[机械工程—机械制造及自动化]