SELF-PROPELLED JIG CRANE Russian patent published in 2015 - IPC B66C23/80 B60S9/12 

FIELD: transport.

SUBSTANCE: claimed crane comprises carrier chassis with the frame, load-bearing frame with front and rear bracing jacks mounted on chassis frame, turn drive, winch with rope and jig equipment located at said turn drive. Said bracing jacks have chamfers from the side of support hydraulic cylinders. Front bracing jacks are arranged to turn and directed from driver cabin. Load-bearing frame is composed of a stiff welded structure consisting of three parts: platform, front and rear crosswise bars. Note here that front crossbar length is larger than that rear crossbar. Bracing jacks are mounted at crossbar ends. Rear bracing jacks are arranged to turn and directed to driver cabin. Each of two rear bracing jacks is arranged in recess composed by platform side surface and front crossbar. Front bracing jack is located from outside the rear bracing jack. Turn drive is composed by short platform. Winch and rope are arranged under jig hardware.

EFFECT: lower metal input, decreased weight of load-bearing frame, higher crane capacity.

13 cl, 6 dwg