FIXING LEDGE FOR EARTHMOVING TIP Russian patent published in 2020 - IPC E02F9/28 

FIELD: excavation and moving of soil.

SUBSTANCE: invention relates to locking protrusions for earthmoving tips of assembly of teeth of tools for excavation. Fixing ledge comprises: ledge base with base contour and ledge outer surface. Part of the base contour lies in the base plane, at that, the base contour includes the front edge of the base and the back edge of the base, opposite the front edge of the base. Outer surface of the protrusion is spaced from the base of the ledge and extends from the front edge of the base to the trailing edge of the base. At that, external surface of the protrusion includes: a front outer surface extending inclined relative to the base plane from the front edge of the base towards the back edge of the base, an intermediate outer surface of the protrusion spaced from the base plane and extending obliquely from the front outer surface of the protrusion, and, in fact, a flat back outer surface of the protrusion, extending obliquely from the intermediate outer surface of the protrusion and ending at the trailing edge of the base such that the rear outer surface of the protrusion, passing from the intermediate outer surface of the protrusion, approaches the base plane.

EFFECT: technical result is protection of fixation mechanism.

10 cl, 10 dwg