| 摘要 |
<p>Locking synchronization system for gearbox shift systems in which a sliding sleeve carrier (1) and a gearwheel (2) having a varying rotation speed are coupled together, by positive engagement, with the aid of a slidable, annular sliding sleeve (3), thereby maintaining a synchronous speed. A coupling gear (31) of the sliding sleeve (3) engages with an appropriate outer gear (11) of the sliding sleeve carrier (1) and with a coupling gear (21) of the gearwheel (2), with pressure pins (4) arranged between the sliding sleeve carrier (1) and the sliding sleeve, said pins in the non-coupled state engaging in a recess on the inner side of the sliding sleeve (3) and having pressure surfaces which are in operating connection with pressure surfaces on a synchronization ring (5) which is arranged axially between the sliding sleeve carrier (1) and the gearwheel (2) and is connected by entrainement with the sliding sleeve carrier in both peripheral directions via stops having a peripheral play. Parts of the gearwheel (2) form, jointly with parts of the synchronization ring (5), a force-induced coupling (friction surfaces 22, 23). Locking teeth (51) are provided on the synchronization ring (5) for intermittent locking of the axial movement of the sliding sleeve (3). The locking action is removed also in the case of a continuing differential speed depending on the heating up occurring on the synchronization ring (5) or of a specified unlocking force (P) which operates transversely to the movement of the sliding sleeve (3) on the locking teeth (51) of the synchronization ring (5). As a result of the heating of the synchronization ring (5) accompanied by simultaneous contact on the end face of the greawheel (2), the frictional and locking action is removed, or the friction torque and unlocking forces (P) are so matched in relation to one another that in the event of a high gear changing force (PS) the unlocking forces (P) overcome the friction torque (R) and unlocking also takes place.</p> |
