Multi-speed and multi-path change speed gearbox

A multi-speed and multi-path change speed gearbox has three component transmissions 12, 13 and 29, with the first component transmission 12, for a lowest gear, having a gear stage 14 with a free gear 21 connected to a hollow intermediate shaft 26 via changing gear clutch 19. A power shift clutch 15 couples the intermediate shaft 26 to a gearbox input shaft 10. The second component transmission 13, for further forward ratios, comprises a shaft 6, formed in one piece with gearbox input shaft 10, and has a gear stage 17 with free gears 23, 24 connected to the shaft 6 by changing gear clutch 20. A highest ratio is formed by component transmission 29 having a gear stage 28 with gear 23 connected to the gearbox shaft 10 by another power shift clutch 30. In another embodiment the intermediate shaft 25 (fig 4) is parallel to the gearbox input shaft 10 and driven via gearing (8, 9). The power shift clutches 15, 30 may be placed in different spatial arrangements (figs 2 and 3).