Large aluminum grating fixing system outside glass curtain wall

The utility model discloses a large aluminum grating fixing system outside a glass curtain wall, which relates to the technical field of building curtain wall industry, and comprises a glass curtain wall mounting system, a switching system and an aluminum grating mounting system, the glass curtain wall mounting system comprises a hot galvanizing anchor plate, a steel square tube stand column and hollow glass, chemical bolts are connected to the positions, close to the upper edge and the lower edge, of one side of the hot galvanizing anchor plate in a threaded mode, a channel steel connecting piece is welded to the position, located in the middle, of one side of the hot galvanizing anchor plate, and first stainless steel bolts are connected to the positions, close to the upper edge and the lower edge, of the front end of the channel steel connecting piece in a threaded mode; a steel square tube cross beam is fixedly installed at the front end of the steel square tube stand column. According to the utility mode