基础振动下液压锁紧回路背压阀的选型方法  

Selection method of hydraulic lock circuit counterbalance valve with foundation vibration

作　　者：潘文龙[1] 张怀亮[1,2] 王蔚坪 PAN Wenlong;ZHANG Huailiang;WANG Weiping(College of Mechanical and Electrical Engineering,Central South University,Changsha 410083,China;State Key Laboratory of High Performance and Complex Manufacturing,Central South University,Changsha 410083,China)

机构地区：[1]中南大学机电工程学院,湖南长沙410083 [2]中南大学高性能复杂制造国家重点实验室,湖南长沙410083

出　　处：《中南大学学报（自然科学版）》2018年第4期839-847,共9页Journal of Central South University:Science and Technology

基　　金：国家重点基础研究发展计划(973计划)项目(2013CB035400)~~

摘　　要：针对振动环境下背压阀对锁紧回路动态特性的影响,建立节流阀、顺序阀及平衡阀作背压阀的3种锁紧回路的仿真模型,实验验证该仿真模型的正确性。对比分析在基础振动下空载、定载和变载时这3种背压阀对锁紧回路动态特性的影响,得到基础振动以及负载对液压缸的速度影响曲线。研究结果表明:基础振动下定载及负载变化在0~90 k N时,节流阀和顺序阀背压相对平衡阀背压有更强的稳定性,当交变载及变载大于100 k N时,平衡阀的稳定性相对更好。该方法能够为液压锁紧回路背压阀的选型提供一定的参考。Focused on the impact of counterbalance valve on lock circuit’s dynamic characteristic in vibration environment,the simulation models for three kinds of lock circuits with the throttle valve,sequence valve and balance valve which are used as counterbalance valve were established,and experimentally verified.A curve was obtained showing the foundation vibration and load influence on hydraulic cylinder speed,by comparing the effects of counterbalance valve under the condition of no load,constant load and variable load on lock circuit’s dynamic characteristic.The results show that compared to using balance valve as counterbalance valve,using throttle valve and sequence valve has a better stability under the condition of vibration environment in constant load and with the variable load between 0?90 kN,but balance valve has better stability when alternate load and the variable load is larger than 100 kN.New method provides a reference for counterbalance valve selection in lock circuit.

关 键 词：背压阀 锁紧回路 基础振动 选型 动态特性 

分 类 号：TH137[机械工程—机械制造及自动化]