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四輪驅动拖拉机由于具有良好的牵引附着性能、較高的生产率和經济性等一系列特点,近年来得到相当大的发展。 四輪驅动拖拉机的性能有很多特点。研究分析的結果表明,这些特点在一定程度上取决于前后驅动軸間的連接方式。在現有的四輪驅动拖拉机中,驅动軸間的連接方式有四种:剛性連接,摩擦偶合器連接,軸間差速器連接,自由輪(自由行程机构)連接。其中,驅动軸間采用自由輪連接的四輪驅动拖拉机,近年来有較大的发展。例如,苏联近年生产的T-19A、T-28Π、T-40A和MT3-52等四輪驅动拖拉机均采用自由輪連接前后驅
Four-wheel drive tractors have gained considerable development in recent years due to a series of features such as good traction and adhesion, high productivity and economy. Four-wheel drive tractor performance has many features. The results of research and analysis show that these characteristics depend to some extent on the connection between the front and rear drive shafts. In the existing four-wheel drive tractor, there are four ways to connect the drive shaft: rigid connection, friction coupling connection, inter-shaft differential connection and free wheel (free stroke mechanism) connection. Among them, the drive shaft connected by a free wheel four-wheel drive tractor, in recent years have a greater development. For example, four-wheel-drive tractors such as the T-19A, T-28Π, T-40A and MT3-52 produced by the Soviet Union in recent years all use freewheel connections