RETAINER SYSTEMS FOR GROUND ENGAGING TOOLS Russian patent published in 2018 - IPC E02F9/28 

FIELD: machine building.

SUBSTANCE: invention relates to ground engaging tools, in particular to a retainer system for the removable fastening of ground engaging tools. Retainer system comprises a lock, having a lock rotation axis and a retainer bushing. Lock includes an outer surface, extending about the lock rotation axis, a working part, having an equipment fastening extending along the lock rotation axis, and a C-shaped bottom, protruding from the working part. Retainer bushing is at least partially made of a flexible material and includes an inner surface extending about the lock rotation axis and configured to rotatably receive the outer surface of the lock. Moreover, the outer surface of the lock and the inner surface of the retainer bushing are aligned substantially parallel to the lock rotation axis, form a contact surface, which is, in general, cylindrical with respect to the lock rotation axis, and comprises a detent projection on the inner surface of the retainer bushing and a detent recess on the outer surface of the lock, is designed to receive the detent projection. Detent projection on the inner surface of the retainer bushing is shorter, than the detent recess on the outer surface of the lock.

EFFECT: technical result is the simplification of the operation of the retainer system.

4 cl, 35 dwg