Multi-step automatic planetary reduction gearbox for a motor vehicle has drive and driven shafts, single-link planet sets, a device to preset feed transmission, rotary shafts and gearshift devices.

摘要

Shafts (0-6) and gearshift devices (03,04,13,14,26,35) couple up single-link planet sets (P2,P3) of gearing. A device (P1) sets feed transmission in advance. The shafts and gearshift devices along with brakes (03,04) and clutches (13,14,26,35) use selective gearshift to engage forward and reverse gears. A drive shaft (1,An) links directly to the device for setting feed transmission in advance. A driven shaft (2,Ab) connects to a ring gear in a third planet set (TPS) (P3). A third shaft (3) makes a continuous link (CL) with sun wheels in a second (SPS) (P2) and third (TPS) (P3) planet sets. A fourth shaft (4) makes a CL to a link in the TPS. A fifth shaft (5) links up a ring gear in the SPS and the device for setting feed transmission in advance. A sixth shaft (6) makes a CL with a link in the SPS.