Elektrisch gesteuerter und hydraulisch betätigter X-Y-Schaltmechanismus.

摘要

An electrically controlled, fluidly actuated X-Y type shifting mechanism (30) for cooperation with a mechanical change gear transmission shift bar housing assembly (10) normally controlled by a manual shift lever is provided. The mechanism (30) includes a housing (32) having a single pressurized fluid connection (52) and a single electrical connection assembly (50) which is mounted to a shift bar housing assembly normally receiving a shift lever lower. A shift finger (38) extends into the shift bar housing for cooperation with the shift rail (12, 14, 16) shift blocks (24, 26, 28) and is positioned by two transversely mounted, axially movable shafts (68, 110). Each of shafts is axially positioned in a selected one of three selectable axial position by piston/cylinder assemblies (46, 42) controlled by six three-way, two-position electrically operated valves (180, 152, 154, 156, 158, 160).