| 摘要 |
<p>A drive mechanism for a four-wheel-driving tractor, comprising a pair of input shafts in double tube construction with the fitted to nest in the other, main gearing shaft assembly, differential gearing, front-wheel driving-shaft assembly, gearing wheels provided in both frontal and rear portions of the frontwheel-driving-shaft assembly, a power-taking-off shaft and a power-taking-off-shaft-driving-shaft assembly. Driving power taken out from the gearing wheel provided in front portion of the front-wheel-driving-shaft assembly is transmitted to front wheels via a transmission shaft with a mating gear, disposed at an underbelly portion of the tractor. The power-taking-off-shaft-driving-shaft assembly is provided above the differential gearing. With this construction, the front-wheel-driving-shaft can be made short, sufficient empty space height can be provided in the underbelly portion of the tractor, and the transmission housing can be minimized.</p> |
