Fixed-point displacement mechanism for quick reloading of automobile skylight frame

The utility model discloses an automobile skylight frame rapid reloading fixed-point displacement mechanism which comprises a machine frame, a transverse support, a bridge frame, a synchronous lifting table, an air cylinder, a lifting table plate, a receding groove, a Y-column rapid replacement bracket, a pneumoelectric sliding ring and a rapid replacement plate. The transverse support is arranged on the machine frame, the bridge frame is arranged on the transverse support, the synchronous lifting table is hung on the bridge frame, and the synchronous lifting table is arranged on the synchronous lifting table. The synchronous lifting table comprises an air cylinder and a lifting table plate which are in transmission connection, a receding groove is formed in the center of the lifting table plate, and a Y-column quick-changing bracket connected to the air cylinder is contained in the receding groove. By means of the mode, aiming at the problems that a cross beam in a skylight is large in assembling difficulty,