Preparation device of recycled asphalt mixture

The utility model discloses a recycled asphalt mixture preparation device which comprises a preparation cylinder and a stirring and cleaning mechanism arranged in the preparation cylinder, and the stirring and cleaning mechanism comprises a stirring assembly, a transmission assembly and a cleaning assembly; the stirring assembly comprises a stirring motor, a rotating shaft and a stirring rod, the stirring motor is fixedly connected to the top end of the preparation cylinder, the rotating shaft is installed at the output end of the stirring motor, and the stirring rod is installed on the outer wall of the rotating shaft; according to the device, the cleaning plate is arranged, the connecting shaft rotates to drive the threaded rod to rotate through meshing of the first bevel gear and the second bevel gear, the threaded rod rotates to drive the telescopic rod to slide along the inner wall of the stirring rod through the threaded sliding block, and the telescopic rod slides to enable the inclined cleaning plate