静液压传功(HST)是一种在流动机械上很有发展前景的先进的传动方式,本文介绍静液压传动的组成与原理,以及在国外叉车、集装箱跨运车、牵引车和装载机等流动机械传动系统上的应用情况及其经济性分析. Hydrostatic transmission (HST) is a kind of advanced transmission with great prospect in the field of mobile machinery. This article introduces the composition and principle of hydrostatic transmission, as well as in the overseas forklift, container straddle carrier, tractor and loader Application of Mobile Mechanical Transmission System and Its Economic Analysis.