【摘要】 变速箱是拖拉机核心部件之一,其性能的好坏对拖拉机的动力性、经济性、舒适性及可靠性等关键性能指标有着重要的影响。分析了拖拉机变速箱的发展历史以及不同发展阶段变速箱的类型,详细阐述了动力换挡变速箱和无级变速箱的工作原理、技术特点及国内外应用现状。在此基础上,对拖拉机变速箱的发展趋势进行了展望。更多还原

【Abstract】 The transmission is one of the key components of tractor,and its performance has important influence on the power,economy,comfort and reliability.The development history and the various types of the tractor transmission in different development stages are introduced.The working principle,the technical characteristics,and their applications both at home and abroad of power shift transmission and continuously variable transmission(CVT) are expounded in detail.Finally,the development tendency of the tractor transmission is summarized.更多还原