LIFTER Russian patent published in 2006 - IPC B66B9/02 

FIELD: handling equipment.

SUBSTANCE: working surface of load bearing bar of lifter is defined by cylindrical surface of cavity provided within said bar. Lifter drive has electric engines rotating in opposite directions at equal rotational velocities and connected with their casings to rotating stators equipped with upper and lower bushings. Sets of drive rollers are mounted on upper and lower bushings eccentrically relative to working surface of load bearing bar by means of pins positioned normal to working surface of this bar and extending for each of drive rollers through center of contact area of above surface with said roller and for their restricted synchronous rotation relative to said pins. Lifter is equipped with drives for rotation of drive rollers around their pins to enable transmission, in conjunction with electric engines, of motion of drive rollers of various sets of rollers along helical paths in opposite directions. Lifter is further provided with guiding bars for contacting with guiding rollers.

EFFECT: increased efficiency and prolonged service life.

4 dwg