Getriebe zur Erzeugung vielfacher Übersetzungsverhältnisse.

摘要

A tractor transmission includes first and second hydraulically actuated disc clutches (32,38) adapted to driveably connect an input shaft (14), which is clutched by a friction clutch (16) to an engine, to a first and second sleeve shafts (20,50). A countershaft (104) and the sleeve shafts (20,50) support gear-pinion pairs that produce four speed ratios. The range box includes gearing mounted on an output shaft (110), the countershaft (104), and the input shaft (14) to drive the output shaft (110) at a slower speed than that of the countershaft (104) when the low range is selected, to drive the output shaft (110) in the opposite direction to its forward drive direction when reverse operation is selected, and to directly connect the countershaft (104) to the output shaft (110) when the high speed range is selected.