| 摘要 |
<p>A gearbox has an output shaft and an axis parallel to the output shaft. The gearbox comprises a main housing for enclosing gears and a bell housing for positioning adjacent an associated clutch, the bell housing being secured to the main housing. First roller mounting means are located in the main housing, second roller mounting means are located in the bell housing, and a first set of rollers is mounted on the first roller mounting means, a second set of rollers being mounted on the second roller mounting means. A plurality of shift bars is operatively connected to shift elements for engaging and disengaging the gears, each of the shift bars extending parallel to the axis, and each of the shift bars having a rectangular cross-section and first and second axially spaced ends. The first ends of each of the shift bars are mounted on the first set of rollers, the second ends of each of the shift bars being mounted on the second set of rollers. At least one of the first and second ends of each of the shift bars define a slot to facilitate the assembly of the gearbox, the bars being constrained to substantially axial movement by the first and second sets of rollers. Control means for selectively engaging and axially moving the shift bars.</p> |
