Housing for extension stage for gear box, has two spur gear stages with multiple spur gears to connect jackshaft and shift element, and shift element is formed around switching state with direct coupling between drive and output

摘要

The housing (830) has a drive (641), an output (642), a spur gear stage with multiple spur gears and another spur gear stage with another number of spur gears. The former spur gear stage and the latter spur gear stage connect a jackshaft (670) and a shift element. The shift element is formed around a switching state with a direct coupling between the drive and the output. The latter spur gear stage is optional for the effectuation of the rotation speed alteration with former number of spur gears or for the effectuation of the rotation direction reversals with the latter number of spur gears. Independent claims are included for the following: (1) a gear box for a vehicle, comprises planetary gear trains; and (2) a powertrain for a vehicle, comprises an axle gear box.