采用多路电磁换向座阀取代目前农业机械广泛使用的手动多路阀不仅可使布局合理、能量损失减少、便于自动控制,而且经济可靠。本文提出并研制的四种直动式基础元件、二种先导式基本单元以及由它们组合成的五种基本集成阀片,已经在联合收割机上得到了应用,它也可用于工况相似的其他行走机械上。 The use of multi-way solenoid valve to replace the current widely used agricultural machinery manual multi-way valve can not only make the layout reasonable, reduce energy loss, easy to automate, and economical and reliable. The four kinds of direct acting basic elements proposed and developed in this paper, two kinds of pilot basic units and five kinds of basic integrated valves assembled by them have been applied on the combine harvester, and it can also be applied to other similar Walking machinery.