Multi-group gearing with hand-shifted main gearing has constant wheel pair transferring rotation of layshaft to output shaft and planetary group gearing with two or more transmission ratios connected to output side of main gearing

摘要

The gearing comprises a hand-shifted main gearing (1) and group gearing (2). The main gearing has a drive shaft (3), coaxial output shaft (4) and layshaft (5). A constant wheel pair (K-1, K-2) transfers the rotation of the layshaft to the output shaft. The group gearing comprises a planetary structure with at least two transmission ratios which is connected on the output side of the main gearing and is driven through a sunwheel. An additional crawler gear can be provided together with the forward gears.