| 摘要 |
A system for the automatic opening and closing of doors in lifts in general, composed of two wings (10, 11) sliding vertically, by the lift operator in the car, obtained through the effect of the transformation of the horizontal motion of the carriages (53) controlling the doors of the car and of the floors, into a vertical motion by means of two vertical chains (62), (70) dragged by toothed wheels (60), (61) respectively integral with the two toothed wheels (54), (55) which control, by means of a horizontal annular chain (56), the horizontal movement of each carriage (53), the two ends (65), (67), (73), (75) of each of these vertical chains (62), (70), being fastened respectively to the upper wing (51) and to the lower wing (52) of the doors. |
