The utility model discloses a bushing structure, sleeve pipe including the connection of a plurality of axials, during sheathed tube upper portion set up the connection pinhole, the connecting pin was fixed connect the pinhole, the sheathed tube lower part sets up back the type hook, and the connecting pin that subordinate sleeve pipe upper portion set up imbeds in the type of the returning hook, sheathed tube outside suit fixing sleeve, type dogging groove is gone back to in fixing sleeve's lower extreme setting, and the connecting pin card that subordinate sleeve pipe upper portion set up is in return in the type dogging groove, the last pinhole that sets up of fixing sleeve, sleeve middle part set up axial groove, and the locating pin inserts fixing sleeve and goes up in the pinhole that sets up and the embedding among the axial groove. The utility model has the advantages that: simple structure, it is convenient to dismantle, uses manpower sparingly and safe and reliable, and the moment of torsion of transmission is great.