EXCAVATOR GEAR ASSEMBLY FOR FIXING GROUND-HITCH ELEMENT (OPTIONS) AND METHOD FOR LOCKING OR UNLOCKING WEAR ELEMENT USING LOCKING PIN ASSEMBLY Russian patent published in 2022 - IPC E02F9/28 E21C35/19 F16B19/02 

FIELD: earthmoving equipment.

SUBSTANCE: group of inventions relates to an excavator gear assembly and a method for locking and unlocking a wear element using a locking pin assembly. The locking pin assembly serves to fix a ground-hitch element having at least one side hole to a support structure aligned with the mentioned at least one side hole. The locking pin assembly contains: a part in the form of a case, having a non-circular profile and made with the possibility of selectively passing into the support structure without rotation, a part in the form of a shaft, located inside the part in the form of a case and rotated between a locked position and an unlocked position, wherein the part in the form of a shaft has a hole made in it, a cam shaft and a radially passing locking element. The cam shaft is made with the possibility of rotation, placed inside the hole of the part in the form of a shaft, wherein the cam shaft is made with the possibility of interaction with the part in the form of a shaft for free rotation inside the part in the form of a shaft in the first range of motion and for exertion of rotational force on the part in the form of a shaft in the second range of motion. The radially passing locking element is mounted on one of the part in the form of a shaft and the part in the form of a case and is made with the possibility of selective mechanical engagement with the other of the part in the form of a shaft and the part in the form of a case to selectively prevent rotation of the part in the form of a shaft relatively to the part in the form of a case.

EFFECT: improvement of the connecting structure.

23 cl, 31 dwg