Motor vehicles – Special driving device – Portable track
Patent
1998-02-20
2000-06-20
Butler, Douglas C.
Motor vehicles
Special driving device
Portable track
180 923, 180 936, 180 141, B62D 5500
Patent
active
060766204
ABSTRACT:
An agricultural machine with a loading area above the rear axle assembly, a driver's cabin between front axle and rear axle assembly, an engine within the front area of the vehicle and a front frame associated to the front axle assembly as well a rear frame associated to the rear axle assembly is structured in such a manner that the rear axle assembly is provided with a travelling mechanism or alternatively a crawler unit preferably a crawler belt unit, with low loading area and with a swinging axle; the front axle assembly is provided with single tires or with a travelling mechanism resp. a crawler belt unit, the frame of the crawler belt unit associated to the rear axle assembly is available to its full length and width for net superstructures of the machine, the length of the crawler belt unit and the supporting crawler belts is larger than the width of the crawler unit, the diameter of the guide rollers of the crawler belt unit is substantially smaller than the diameter of the front wheel tires for obtaining a center of gravity as low as possible for the superstructures, and the cabin is positioned between the front axle and the front end of the rear axle assembly.
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