DIGGING WORKING MEMBER WITH CROWN AND ADAPTER TOOTH ASSEMBLY Russian patent published in 2016 - IPC E02F9/28 

FIELD: machine building.

SUBSTANCE: invention relates to excavating machines with digging working elements. Earthmoving bit of tooth assembly comprises rear end, top outer surface, bottom outer surface, side outer surfaces located opposed to each other, inner surface and two cavities, each of which enters inside excavation bit body from the side of appropriate side outer surface and between upper outer surface and lower outer surface. Upper outer surface and bottom outer surface extend forward from rear end and converge in front, thus forming a front edge. Side outer surfaces extend upward from bottom surface to upper outer surface. Inner surface enters inside excavation bit from the rear end and forms inner cavity of the excavation bit, which shape corresponds to adapter head shape, which is inserted inside said inner cavity. Each cavity is located near the front edge.

EFFECT: improved design of tooth assembly.

8 cl, 37 dwg