PLATFORM LIFTING APPARATUS WITH RACK AND SPROCK LIFTING MECHANISM

摘要

Apparatus 15 - plates in order to carry and the cover plates with a view to their installation on a construction site, with a telescopic mast (10) formed of several elements (11, 12, 13), connected to a mount (40) with casters (43) and provided with a frame carries - plate (30) connected by an adjustable to the upper end of the mast (10) and a lifting mechanism of the mast (10). The lifting mechanism (20), carried by the upper end of the lower element (11) of the mast (10), is composed of a pinion (232) cooperating with a rack carried by the intermediate element (12) of the mast (10), the pinion (232) being carried by a pin (231) whose ends are each provided with a handle (2 1a, b).