| 摘要 |
A cross-country vehicle comprises a chassis or frame (1) supported by at least two pairs of wheels (4, 5) and itself supporting a driver's cab and an engine, at least one pair of cooperating wheels (4, 5) being mounted on movable wheel suspensions (6) allowing raising and lowering each separate wheel relative to the chassis (1). Each wheel suspension (6) comprises two separate, substantially parallel arms (18, 19) each of which is pivotally connected at opposite ends by means of articulations (20, 21; 22, 23), on the one hand to the chassis and on the other hand to a mounting plate (24) on which the wheel (4, 5) is rotatably mounted, and a double-acting hydraulic cylinder (27) extending diagonally between an inner articulation (20) of one parallel arm (18) and an outer articulation (23) of the other parallel arm (19), the wheel being raisable and lowerable by a relative change of the length of the hydraulic cylinder (27) in relation to the length of said arms (18, 19). |
