挖掘机液压控制系统分析

Analysis of Excavator Hydraulic Control System

挖掘机是人类开拓自然、改造自然的重要工具,且挖掘机行业是工程机械中最具代表性的子行业。因此,提高挖掘机的节能性和操纵性对工程机械的发展具有重要的意义。现代挖掘机液压系统仍普遍采用正流量控制技术,负流量控制技术以及负载敏感(LS以及LUDV)控制技术。该文着重分析了以上4种应用于挖掘机的系统控制特性,并阐述了它们各自的优缺点,为挖掘机的设计或生产提供参考依据。

Excavators are important equipment to explore and transform nature.Excavator industry is the most representative sub-industry in construction machinery.Therefore,it is important for the development of construction machinery to improve the operability and ability to save energy.Hydraulic systems of modern excavators still adopt positive flow control technology,negative flow control technology and load sensitive(LS and LUDV)control technology.The article focuses on the analysis of controlling properties of four system applied in excavators,elaborates their advantage and disadvantage and provides references for design or production of excavators.