The invention discloses a pin shaft connection frame, which comprises a connection frame, a transition frame and a reversing frame which are hinged in sequence from front to back, wherein the connection frame can rotate left and right relative to the transition frame; and the reversing frame can rotate up and down relative to the transition frame. The pin shaft connection frame provided by the invention realizes the left and right and up and down rotation of the connection frame, so that the phenomena of mutual collision and interference between the reversing frame and other components during the up and down movement of an engineering machine using the connection frame are avoided.