SCRAPER CONVEYOR FOR UNLOADING BULK PRODUCTS FROM STORES Russian patent published in 1999 - IPC

FIELD: materials handling facilities. SUBSTANCE: two booms of scraper conveyor are hinge connected by common shaft-joint which serves as shaft of tension sprockets of one boom and support of other booms. Shaft-joint is moved by bearing-slider in slots on side cheeks of second boom under action (tension) pulley block cable whose sheaves are freely on shaft of second boom tension sprockets and on shaft-joint between sliders providing stability in raised position and control of crane (lifting and lowering of booms) at unloading. EFFECT: reduced metal usage by excluding bulky and massive supporting devices. 4 dwg