The invention provides a pushing mechanism and a positioning adjustment device for a threaded pipe sleeve conveying trolley. A first air cylinder moves forwards and drives a supporting plate to move forwards by a distance. Two pushing plates located at the front end of the supporting plate abut against the conveying trolley, the conveying trolley is positioned on a conveying line, and the position of the conveying trolley on the conveying line can be adjusted. A second air cylinder drives a base to move front and back. When a displacement sensor above a driving friction wheel moves to the position of a driven friction wheel above an empty bucket clamping device of the conveying trolley, the displacement sensor transmits a signal to a controller, the controller controls the second air cylinder to stop moving, meanwhile, the controller controls a motor to rotate, and the driving friction wheel is made to rotate through a synchronous belt. The driving friction wheel rotates and drives the driven friction wheel above the empty bucket clamping device to rotate, two arc-shaped rods in a first arc-shaped rod set move relatively, two arc-shaped rods in a second arc-shaped rod set move relatively at the same time, clamping or releasing of an empty bucket is achieved, and discharging of sleeve membrane wires can be completed.