TOWER CRANE Russian patent published in 1997 - IPC

FIELD: hoisting and conveying equipment; particularly hoisting machinery. SUBSTANCE: one end of the first boom is welded to bell and the other end is mounted on electric motor vehicle and is welded to its body. One end of the second boom is also welded to the bell while the other end is welded to support installed on bogie. Boom to boom angle is equal to 90 deg. One end of beam is welded to the first boom and the other end to the second boom. Installed on the beam is load carrying bogie with load hoisting winch. EFFECT: improved efficiency. 3 dwg