双缸变幅系统的防偏载研究  

Research on Anti-biased Load of Double Cylinder Luffing System

作　　者：赵燕 芦敏[1] 马苏常 ZHAO Yan;LU Min;MA Su-chang(School of Mechanical Technology, Wuxi Institute of Technology, Wuxi, Jiangsu 214000)

机构地区：[1]无锡职业技术学院机械技术学院,江苏无锡214000

出　　处：《液压与气动》2022年第3期145-150,共6页Chinese Hydraulics & Pneumatics

基　　金：2019年度无锡职业技术学院博士、教授科研启动课题(BT2019-01)。

摘　　要：针对双缸变幅系统在变幅下落时两侧油缸无杆腔压力存在偏差,即负载向一侧油缸偏载的问题,以某款消防车的变幅系统为载体进行防偏载技术研究,找出导致双缸偏载的根源,并提出改进方案。结合测试数据及电液系统参数,采用联合仿真方法,搭建双缸变幅机电液系统仿真模型,优化了改进方案。仿真结果和整机测试数据均表明:采用防偏载阀并合理设置其调定压力,能有效降低变幅下落时两侧油缸压力偏差幅值,防偏载效果显著。In order to reduce pressure deviation of rodless cavity of hydraulic luffing cylinders on both sides while luffing down,taking a fire truck luffing system as the carrier,this paper studies and finds out causes of biased load of double cylinder,and puts forward improvement scheme.Furthermore,based on test data and electro-hydraulic system parameters,the co-simulation method is used to build electro-hydraulic luffing system simulation model and optimize the improvement scheme.The simulation and machine test results show that,using anti-biased load valve with reasonable setting pressure can effectively reduce pressure deviation amplitude while luffing down,the anti-biased load effect is remarkable.

关 键 词：防偏载 双缸变幅系统 平衡阀 液压系统 

分 类 号：TH137[机械工程—机械制造及自动化]