Lifting apparatus comprising a winding drum of a cable whose drive is ensured by a chain kinematic closed

摘要

Lifting equipment comprising a drum 1 around which the cable is wound, designed to be connected to the load Q, and a motor 3. To transmit the power and the torque from the motor 3, a planetary gear train is fitted into each reduction gear Ra, Rb transmitting the power and the torque to the input shafts 5a, 5b of the drum 1, the fixed crown 13a, 13b of each gear being associated with means allowing it to be angularly displaced slightly on either side of a position of equilibrium, these two crowns 13a, 13b being connected together by a mechanism with differential action making their rotation dependent and opposed. IMAGE