EXCAVATOR WEARABLE UNIT Russian patent published in 2017 - IPC E02F9/28 

FIELD: machine engineering.

SUBSTANCE: one of the locking unit versions for the excavator wearable unit, which contains the locking pin, having a flange portion and a longitudinal axis, and a holding unit, having a fixing element and designed to receive the locking pin. Wherein the locking element of the retaining unit is adapted to deform perpendicularly to the longitudinal axis of the locking pin, when the locking pin is inserted longitudinally into the holding unit. Wherein the locking element of the retaining unit is adapted to engage with the flange part of the lock pin to prevent the locking pin extraction from the holding unit, when the locking unit is in the fixed position. The locking element has the protuberance in the shape of a circle segment, substantially extending along the inner wall, and the protuberance adapted to engage with the flange part to prevent relative rotation between them. And the method of fixing the excavator wearable element on the bracket.

EFFECT: increase of the gear tooth elements lifetime, gear tooth holding system simplicity and economic efficiency.

61 cl, 37 dwg