MINE EXCAVATOR ROTARY SUPPORT Russian patent published in 2014 - IPC E02F9/12 B66C23/84 

FIELD: transport.

SUBSTANCE: proposed device is composed of roller turn table with symmetric circular thrust guides. Lower guide is mounted at running gear lower frame. Upper guide is arranged at turn table lower belt. Rails with support surface are arranged at said circuit thrust guides. Taper rollers with cylindrical pins are arranged between said rails. Rollers are connected with cages, isolating inserts and washers. Lubricators are arranged at centres of axes on outer side of roller turn table. Diameter of thrust guides is comparable with lower frame width. Upper and lower rails are equipped with grooves for plates to be bolted thereto at circular guides. Flanges are made at taper roller inner ends. Edges of rail inner ends and mating flange surface are arc-shaped. Relationship between flange OD and maximum spacing between rail bearing surfaces ≥1.1. Roller pins are elongated relative to said flange and outer ends. Aforesaid cage represents a circular shell arranged inside roller turn table. Axles are pinned to said cage. Gaskets are fitted between roller flange and circular shell. Washers are fitted on axles on outer side of rollers.

EFFECT: uniform distribution of loads, better reparability.

2 cl, 3 dwg