Planetary multistep reduction gear has drive and driven shafts, three planetary sets, rotary shafts gear-shift elements comprising brakes and couplings

摘要

The housing contains a drive (1) and driven (2) shaft, three planetary sets (P1,P2,P3), at least six rotary shafts (1-6,0) and at least six gear-shift elements (0,3,4,14,23,26,36) incorporating brakes and couplings capable of producing seven forward gears and one reverse gear. The sun wheel of the first planetary set is connected to the housing.