Protective unloading device for existing building door opening structure

The utility model discloses a protective unloading device for an existing building door opening structure, which is suitable for protective unloading construction of historical buildings such as stone storage doors and the like, and can integrally protect the door opening structure in the processes of unloading, transferring and storing the existing building door opening structure. The protective dismounting device for the existing building door opening structure comprises an edge covering structure, a bottom beam, a side column, an adjustable supporting foot, a top beam, a transverse connecting piece and an edge sealing component, all the components can be rapidly mounted and dismounted, potential safety hazards caused by welding work are avoided, and all the components can be recycled. The side columns form an integral structure through the bottom beams, the top beams, the transverse connecting pieces and the edge sealing components, the side columns and the wall body are limited through the flexible suppor