Outer frame wall connecting piece device on prefabricated part

The invention discloses an outer frame wall connecting piece device on a prefabricated part, and relates to the technical field of outer frame wall connecting pieces, the outer frame wall connecting piece device comprises a prefabricated mounting assembly, the side end of the top of the prefabricated mounting assembly is slidably connected with a base plate seat, and the other side end of the top of the prefabricated mounting assembly is fixedly connected with a fixed base plate seat; a supporting reinforcing steel assembly is fixedly connected to the top of the fixed base plate seat, and hinge pieces are fixedly connected to the left end and the right end of the top of the supporting reinforcing steel assembly correspondingly, so that under cooperation of a driving angle motor, a worm gear, a worm, a rotating pin piece, a sleeve rod, a rotating control motor and a connecting rod frame, in the whole using process, the supporting reinforcing steel assembly can be firmly connected to the left end and the right