Automatic galling device for prefabricated part

The utility model discloses an automatic napping device for a prefabricated part, belongs to the technical field of mechanical control design, and particularly relates to the technical field of automatic napping machines, in particular to the napping device for the prefabricated part. The napping device comprises a supporting column and a napping device body, the napping device body is installed on the supporting column through a lifting device, a connecting rod is transversely installed at the lower end of the lifting device, a connecting plate is vertically installed on the connecting rod, and the key technology is that napping discs are installed at the lower end of the connecting plate and are arranged in a bilateral symmetry mode, and the two napping discs are connected through a rotating shaft. The utility model has the beneficial effects that through the galling disc pressing type galling, the stress is uniform, the galling depth is reasonable, the standard requirements are met, the concrete surface gr