| 摘要 |
<p>The carriage (1) has a platform (1a) connected to a startup lever (3) by a hinge rotating around an axle (4) perpendicular to direction of displacement to be transmitted to the carriage. A compressible pad (6) is turned toward ground (S) and carried by a free end of a connecting rod (5). The rod is articulated with a lower part (3b) of the lever at an end of the rod. The free end of the rod is mounted to slide against a lower track (10) of a cam (8) secured to the platform to ensure and maintain compression of the pad resting against the ground during motor rotation of the lever.</p> |
