DEVICE FOR LIFTING DUMP TRUCKS TO OPENCAST FLANK Russian patent published in 2007 - IPC B66B9/06 B65G17/06 E21C47/00 

FIELD: opencast mining; quarry transport.

SUBSTANCE: invention relates to systems of quarry transport, namely, to device for lifting and lowering of dump trucks into quarries at opencast mining. In proposed device line for lowering dump trucks into quarry is arranged in parallel to dump lifting line, and drive sprockets in head and middle parts of both lines are provided which are mechanically intercoupled. Each dump truck gripping and handling device is made in form of twin levers with rolls on free ends hinge-attached to two plate-and-roll chains. Twin levers are interconnected by platform for front wheels of dump truck. Each platform of lifting line is provided with two hollow guides of rectangular cross section rigidly attached symmetrically and normally to surface of run. With possibility of free arrangement and displacement of rectangular cross section rods for engagement of lower ends of rods with surface of run at normal operation of device and with wall of cavity in case of tear off of pull chains.

EFFECT: provision of holding of loaded dump trucks on lifting line at breakage of pull chain.

5 dwg