EXCAVATION TOOL Russian patent published in 2019 - IPC E02F9/28 

FIELD: excavation and moving of soil.

SUBSTANCE: group of inventions relates to detachable excavation tool attached to excavating machine. Tool unit for excavation comprises tool for excavation, including: inner surface, outer surface forming front edge of tool, rear surface located substantially opposite the front edge and connecting the inner surface to the outer surface, lock opening surface forming lock hole extending through tool from inner surface to outer surface and lock. Lock opening surface includes cylindrical inner part adjoining inner surface and forming groove in tool extending circumferentially around lock opening; and cylindrical outer part adjacent to outer surface, wherein inner part forms at least one recess for latching part made in tool along groove. Lock comprises working part including, at least, one clamping latching protruding part, and C-shaped skirt extending from working part and forming locking groove to receive holder to fix tool for excavation.

EFFECT: technical result is easy removal and replacement of tool.

10 cl, 14 dwg