| 摘要 |
Tractor (1) provided with driving and steering wheels(2) featuring a rear recess (3) in the front part of which two motor-driven rollers (4) are mounted on a lengthwise oscillating, transverse axle whereas two motor-driven rollers (8) in the rear zone of the recess are mounted on independent transverse axles and are revolving around a vertical axis (11) from a central to a lateral position (8') and vice-versa. The steering front wheels (13) of the aircraft are located between the above pairs of motor-driven (4,8). The rear rollers (8) may move lengthwise so as to ensure that the wheel axle (13) of the airplane will coincide with the rear wheel axle (2) of the tractor (1). <IMAGE> |
