WORKING TOOL LOCKING SYSTEM WITH RUNNING WEDGE Russian patent published in 2020 - IPC E02F9/28 

FIELD: excavating machines.

SUBSTANCE: group of inventions relates to a system for fixation of working equipment. Wedge for working tool fixation system comprises a body having a rounded end and an opposite base, which is wider than rounded end, chute made in body and extending from base to rounded end, elongated pocket made in body at rounded end and communicating with chute, and a slope made on the rounded end of the body and protruding inward from the open side of the chute towards the end of the elongated pocket. Slope is made relative to chute axis, wherein slope is first slope. Wedge additionally comprises second inclination, located at the point between the base of the body and the first slope, wherein the second slope extends outward from the curved surface of the trough in the direction of the elongated pocket.

EFFECT: technical result is prolongation of service life of excavation tools.

8 cl, 5 dwg