Device for fixing a wheel to control depth of a plow frame reversible bars allowing the operation of positive inversion in depth depth control and in transport position

摘要

Device for fixing a wheel depth control (5) to the chassis (1) a plow reversible bars, the said chassis (1) carrying two opposite ramps respective bars (2, 3) and which is rotatably mounted in a tractor about an inversion axis A1 to alternately place by inverting said ramps bars (2, 3) in the working position, being brought in bascula said wheel depth control by said chassis (1) via an integral arm pivots (11) at one end of a shaft (7) eccentric pivot wheel depth control (5) on the chassis (1), while the other end of said arm swivels (11) is articulated to any one of the stem head (10) and body (9) of a hydraulic double-action jack (8), in turn articulated to the chassis (1), so that a maneuver said jack (8) allows, during the inversion of the ramps d and bars (2, 3) to maintain substantially in the same plane containing said axis investment A1, A2 pivot axis of the wheel depth control (5) on the chassis (1) and the center of gravity C thumbwheel depth (5), and conversely so that an inverse operation of said jack (8) allows then to the investment, positively maneuver tilting wheel depth control (5) to the ground exploiting weight of the latter to break said coplanar maintenance naturally causing a tendency of the jack (8) to drive said arm pivots (11) in the corresponding direction and comprising means for adjusting the depth of the depth control that are organized primarily in stroke limiting means of said jack (8), to allow a predetermined distance maxima between the hinge axis A2 of the jack (8) to the chassis (1) and the hinge axis A4 arm swivels (11) to the jack (8), characterized in that the control wheel depth (5) is secured to said arm pivots (11) through means easily reversible binding (20), so that said junction can be broken between said working position and a transport position, in which transport position the wheel depth control (5) is articulated freely pivotably about an axis A3 coaxial rotation with the pivot shaft (7) .