LIFTING CRANE WITH FOLDING JIG Russian patent published in 2015 - IPC B66C23/42 

FIELD: transport.

SUBSTANCE: claimed crane comprises the main jig articulated by one end with turntable and coupled jig articulated with the opposite end of the main jig, hoisting mechanism and jig actuators. The main jig lifting mechanism is composed of two worms with crossed mutually perpendicular axes and worm wheel rigidly fitted on the first worm axle fitted on said turntable to interact with the gear, its bore axis being aligned with the turntable turn vertical axis. Coupled jig lifting mechanism is composed of a worm-and-worm pair, the first worm thereof being fitted in the second worm bore. Worm wheel is articulated with the pivot of said coupled jig.

EFFECT: lower power consumption, enhanced performances.

10 cl, 2 dwg