| 摘要 |
<p>The invention relates to a range gearbox of the planetary type, intended to be connected to a basic gearbox. The ring gear (14) of the planetary gear (7) is connected non-rotatably to a coupling sleeve (18), by means of which the ring gear can be locked either to a coupling ring (25) fixed to the rear housing end wall of the gearbox or to a coupling ring (21) connected to the planet wheel carrier (12), or alternatively a coupling connected to an input shaft (5). The coupling sleeve displaces the ring gear axially during the coupling movement. In order to facilitate this coupling movement, the interacting tooth faces of the planetary gear are angled in such a manner in relation to the longitudinal axis of the input shaft and the output shaft that an axial force arises on the ring gear when the speed of the latter changes during synchronizing. This force tends, at least on shifting to the low range position, to move the ring gear in the same direction as the external shifting force and thus augments the latter.</p> |
