GEARBOX
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. The inventive gearbox consists of a crankcase (1), a torque vibration damper (2), input and output members (3, 4) and an epicyclic reduction gear which is provided with planetary gear sets first of which comprises a sun gear (5), a pinion carrier (6) and a crown gear (7), the second gear set comprises a sun gear (8), a pinion carrier (9) and a crown gear (10) and the third gear set comprises a sun gear (11), a pinion carrier (12) and a crown gear (13). The member (3) is connected to a friction clutch (14), crown gear (13) and to the carrier (9) and is linked with the friction clutch (15) and the gears (10, 11). The carrier (6) is coupled with the member (3), which is connected to a damper (2). A friction brake (16) connects the gears (10, 11) to the crankcase (1), a brake (17) connects the gear (16) and the carrier (9), a brake (18) connects the gears (5) and (8). A gear (7) is coupled with the crankcase (1) by means of a friction brake (19) and the carrier (12) is connected to the member (4).