大速比多项作业车辆采用一种牵引弧锥环轮式无级变速传动和牵引行星传动的变速箱

A High Ratio Multi Moded vehicle Transmission Utilizing a Traction Toroidal continuously variable Drive and Traction planetary

采用一牵引无级变速传动和一行星牵引定速比传动的一种新型变速箱已经设计、研制与试验。本文将以功率流概念和新部件结构两方面来描述这种变速箱的设计。把这种无级变速传动和行星传动综合成一体，可以据此由三个功率流实现总速比２０∶１以上的大无级变速范围。不加其他设备可实现空档与倒档。该变速箱已装于０．５ｔ轻型货车做大速比车辆变速箱有关试验。

A novel transmission has been designed, built, and tested utilizing a traction continuously variable drive and a planetary traction fixed ratio drive. This paper decribes the design of the transmission both in terms of power flow concept and in new component construction. The continuously variable drive and planetary are combined in a scheme whereby three modes of power flow are meshed to provide a high continuously variable ratio range of more than 20∶1 overall. Neutral and reverse are available with no additional hardware. The transmission was installed in a half ton pick up truck for testing the concept as a high ratio vehicle transmission.