| 摘要 |
According to the invention, the drawbar (4) is articulated to the chassis (2) about a transverse spindle (30) and in the extension of the articulation (14) of the trailing arm (13a) and is connected to this chassis (2) by a hydraulic inclination cylinder (32), while the chambers, respectively the top chamber and bottom chamber of the inclination cylinder (32), are connected by hydraulic circuits (36-38) to an operating distributor (37), the top chamber of this inclination cylinder (32) is also connected by a branch-off circuit (42) to the bottom chamber, having a transverse cross-section equivalent to its own, of the elevation cylinder (16a) located on the same side as it, and the bottom chamber of this same inclination cylinder (32) is connected by another circuit (43) to the distributor (40) for operating the aforementioned elevation cylinder (16a). The device makes it possible to adjust the working height without modifying the inclination. <IMAGE>
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