| 摘要 |
A wheel or axle assembly is retractable into a corresponding wheel box (2) in a vehicle body (1). The axle assembly (5, 6, 7) is guided by means of parallel track arms (6, 7). The raising and lowering is effected by means of a pivoted hydraulic piston and cylinder device (8, 9) whose piston rod (8) is articulatedly connected to one arm (11) of cranked lever (10) pivotable about a fixed pivot (13). The other arm (12) of the lever (10) is articulatedly connected to the axle assembly (5, 6, 7) via a spring strut with shock absorber (14). In the rod-travel position, the cranked lever (10) is pivoted to such an extent that its arm (12) slightly exceeds its bottom dead centre position, thus ensuring that this position is maintained even in the event of failure of the piston and cylinder device. <IMAGE> |
