MECHANICAL SYSTEM CONTAINING COUPLING DEVICE BETWEEN WEARING PART AND ITS HOLDER AND BUCKET OF CONSTRUCTION MACHINE Russian patent published in 2018 - IPC E02F9/28 

FIELD: excavation and moving of soil.

SUBSTANCE: group of inventions relates to the mechanical system of the bucket of a construction machine. Said mechanical system of the bucket of a construction machine comprises a holder, a wearing part and a coupling device located between the wearing part and its holder, in particular between the bucket tooth and its holder. Said coupling device includes a housing from a resiliently deformable material having an inner cavity and an outer wall adapted to be positioned in the holder seat and a pin with an elongated body extending along the pin axis. And the coupling device comprises a cam having an outer wall adapted to be positioned in the inner cavity of the housing and an internal cavity for receiving the pin therein. When the coupling device is located in the holder seat, the pin and the cam are movably mounted in the inner cavity of the housing and are fastened together when turning between the position of setting the pin in the cam and at least one locking position in which the pin abuts the wearing part radially relative to its axis, and the cam abuts against the housing, bending its outer wall into the holder seat and thereby forming a coupling connection between the wearing part and the holder.

EFFECT: technical result is a reliable, practical and strong connecting device for eliminating shock operations during assembly and dismantling of wearing parts.

17 cl, 28 dwg