GEARBOX

摘要

The invention relates to automobile transport machine building, in particular the structural design of a step-by-step gearbox, which can be used in automatic transmissions which is controlled by means of an electronic unit and a hydraulics and is used in transport means. The inventive gearbox comprises a planetary reduction gear, whose first planetary gear set carrier is embodied in the form of the gearbox output link, the second planetary gear set carrier is linked with the crown gear of the first planetary gear set, the sun gear of first planetary gear set is linked with the crown gear of the second planetary gear set and with the gearbox case via a friction brake, the sun gear of the second planetary gear set is linked with the sun gear of the third planetary gear set and with the gearbox case via the friction brake, the input link is linked with the third planetary gear set carrier, the crown gear of the third planetary gear set is linked with the gearbox case via the friction brake, the input link is linked with the second planetary gear set carrier via the controllable friction clutch, the crown gear of the first planetary gear set is provided wit a friction brake in such a way that it is connected to the gearbox case, the input link is connected to the sun gear of the first planetary gear set via the controllable friction clutch and to a torque vibration damper.