KNOT OF TOOTH EXCAVATOR WITH NODE LOCKING PIN Russian patent published in 2019 - IPC E02F9/28 E21C35/197 F16B19/02 

FIELD: machine building.

SUBSTANCE: group of inventions relates to an excavator tooth assembly, secured with a removable locking pin assembly. Knot of the locking pin for fastening the grouser with side holes to the supporting structure, leveling with said side openings, comprises: a body-shaped part having a non-circular profile and adapted to selectively pass without rotation into the supporting structure, part in the form of a shaft, located inside the part in the form of a housing and rotated between the first position, which mechanically prevents the removal of the latch element from the supporting structure, and the second position, providing the possibility of removing the grouser from the supporting structure, with a hole, a cam shaft and a radially extending locking element in the shaft-like part. Camshaft is rotatable and placed inside the opening of the part in the form of a shaft, moreover, the cam shaft is adapted to interact with the shaft-like part for free rotation inside the shaft-like part in the first range of motion, and the provision of rotational force on the part in the form of a shaft in the second range of motion. Radially extending locking element is mounted on one element of the shaft-shaped part and the body-shaped part and is configured to selectively engage the mechanical gear with another element from the shaft-shaped part and the body-shaped part for selectively preventing rotation of the shaft-like part relative to the body-shaped part.

EFFECT: technical result is an improvement in the design of the locking pin.

24 cl, 31 dwg