| 摘要 |
<p>A transverse rotor (6) is fixed to the end of a lifting assembly (1) constituted from connecting rods (2,3,5). These rods form two deformable structures (10,11) in two vertical parallel planes which pivot on the tractor chassis (40). In front of this the lifting assembly incorporates extensible or compressible elements (22), such as mechanical springs or hydraulic actuators, which are connected to the hydraulic actuator lifting system (32) by a position detector. Each deformable structure has two superposed parallel connecting rods (2,3), which pivot on the chassis, at the two ends of which pivots a vertical rod (5) carrying one end of the rotor axle (61). The upper rod (2) incorporates an extensible element (22) and the lower rod (3) incorporates a compressible element (22).</p> |
