| 摘要 |
<p>The lifting system has a triangular wedge slidably supported on a guide and transmitting a rolling motion to a roller, where the roller is fastened at a movably supported load column. The load column is provided at a point between its longitudinal cathetus and hypotenuse of a triangle. Shear force of the triangular wedge produces a sliding motion of the roller on a longitudinal cathetus of the wedge and an upward motion of the column, so that a load supported perpendicular to a base is accelerated.</p> |
