SLEWING DEVICE OF MINE EXCAVATOR Russian patent published in 2011 - IPC E02F9/12 B66C23/84 

FIELD: mining.

SUBSTANCE: slewing device of mine excavator includes movable carrier ring, fixed support ring, toothed rim with lower attachment flange to housing of excavator undercarriage and taper rollers installed between carrier and support rings on axes of separators with possibility of free rolling between carrier and support rings along conic annular tracks made on rings. At that, axes of separator are fixed in separator housing and inclined relative to rotation axis of movable carrier ring. Toothed rim is equipped with inner projection, and carrier ring is equipped with outer projection with annular tracks. Projection of toothed rim is located above projection of carrier ring, and between projections in the appropriate separator there installed are rolling bodies with possibility of free rolling along annular tracks of projections.

EFFECT: higher reliability of slewing device, without applying any special requirements to properties, quality and technology of materials.

4 cl, 4 dwg