12-SPEED GEAR BOX WITH A 2X3X2 CONSTRUCTION

摘要

To obtain in a 12-speed transmission for utility vehicles in 2x3x2 construction moving a logical shift diagram by alternating shifting movements back and forth with a continuously increasing or decreasing gear sequence, the two gear steps of the front-mounted section (GV) are manually shifted alternate for each gear step of a pneumatically shifted main section (GR). The rear steps of the main section (GH) are activated pneumatically by activating devices (S1, S2, S3) when changing from one to the next gear step. The transition from the slow to fast step (L, S) of each gear step is automatically carried out pneumatically by the rear-mounted section (GP).