负载敏感阀前补偿系统原理分析  

Principle Analysis of the Load Sensing System with the Front Valve Compensation

作　　者：张立杰[1,2] 王力航 李德新[1,2] 王帅[1,2] 

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实验室,河北秦皇岛066004 [2]燕山大学先进锻压成形技术与科学教育部重点实验室,河北秦皇岛066004

出　　处：《液压与气动》2015年第7期63-67,共5页Chinese Hydraulics & Pneumatics

基　　金：国家自然科学基金(51275438)

摘　　要：负载敏感技术广泛应用于工程机械领域,而实际使用中系统参数的调整及流量饱和现象一直为人们所关注。通过对负载敏感系统基本结构建模分析,得到了补偿阀弹簧压缩过程的负载敏感阀流量-压力关系曲线。基于负载敏感阀流量-压力关系,对负载敏感液压系统的工作原理进行分析,并着重对负载敏感系统的流量饱和现象展开研究,为工程机械负载敏感液压系统抗饱和设计提供理论指导。Load-sensing technology is widely used in engineering machinery, and in actual the adjustment of the system parameters and flow saturation phenomenon are paid attention to. The basic structure of the load-sensing sys- tem is modeled and analyzed. The flow-pressure curve of the load sensing valve is obtained with the consideration of spring compression of the compensating valve. Based on this flow-pressure relationship, the working principle of the load sensing hydraulic system is analyzed. The flow saturation phenomenon of load sensing system is studied emphatically, which aims at providing a theoretical guidance for the anti-saturation design.

关 键 词：多路阀 负载敏感系统 压力补偿 流量饱和 

分 类 号：TH137[机械工程—机械制造及自动化]