| 摘要 |
Straddling tractor whose two front wheels 6a, 6b and one back wheel 5b are fixed, whereas the other back wheel 5a can be adjusted in position at will, both in the lateral direction and in the vertical direction. This tractor is characterised by the fact that the movable back wheel 5a is carried by a substantially horizontal box structure 18 articulated at one of its ends onto a horizontal pivot 17, itself carried by a substantially vertical box structure 13, the latter being carried by means 7, 11 allowing it to slide laterally with respect to the chassis 1 of the tractor. <IMAGE>
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