CABLE LIFTING APPARATUS

The invention relates to a cable lifting apparatus for lifting people or loads, including a traction sheave provided with a peripheral groove housing a suspension cable against which rollers apply a pressure in order for the traction sheave to perform the pulling function thereof. The apparatus is designed such that the radial load on the cable is a function of the load to be lifted and of the torque applied by a pinion mounted at the output of the reduction power unit and meshed with a gear wheel integrally connected to, and rotatably concentric with, the traction sheave. The described apparatus allows using a variable number of cables, either by means of the use of a modified sheave provided peripherally with as many grooves as there are cables and having an independent group of pressure rollers for each cable or through the formation of grooves between portions separated by notches made in radial planes between successive portions and having a single group of pressure rollers for all of the nobles.