GROUND ENGAGING IMPLEMENT TOOTH ASSEMBLY WITH TIP AND ADAPTER Russian patent published in 2016 - IPC E02F9/28 

FIELD: machine building.

SUBSTANCE: group of inventions relates to excavating machines with digging working elements. Earthmoving bit comprises excavating tool base edge tooth assembly. Tooth assembly contains adapter to be secured to digging working element base edge, and has forward protruding head. Earthmoving bit includes rear end, top outer surface, lower outer surface, side outer surfaces located opposite to each other, passing upward from lower surface to upper outer surface, and inner surface, entering inside excavation bit from excavation bit rear end and making excavation bit inner cavity, which shape corresponds to adapter head shape, which is introduced inside said inner chamber. At that, upper outer surface and lower outer surface extend forward from excavation bit rear end and converge in front to make front edge. Inner surface comprises lower inner surface, outgoing from excavation bit end face and located perpendicular to excavation bit rear edge, front inner surface, upper inner surface. Upper inner surface comprises first bearing part near front inner surface and has rear edge, second bearing part near excavation bit rear end face, having front edge, and intermediate part passing from second bearing part front edge to first bearing part rear edge. At that, distance between first bearing part and lower inner surface is less than distance between second bearing part and lower inner surface. At that, upper inner surface second support part is approximately parallel to lower inner surface. Located opposite to each other side inner surfaces pass upward from lower inner surface to upper inner surface.

EFFECT: improving excavation bit tooth assembly.

9 cl, 75 dwg