Plug-in mounting type metal hanging grating

The utility model relates to a plug-in mounting type metal hanging grating. The plug-in mounting type metal hanging and falling grille comprises two mounting side plates and a mounting top plate, two limiting assemblies are arranged between a hanging and falling frame and the mounting top plate, each limiting assembly comprises an annular plate fixedly mounted in the inner top wall of the hanging and falling frame, and a U-shaped frame extending to the upper portion of the annular plate is inserted into the annular plate; inserting rods are hinged to the left side and the right side of the top of the annular plate correspondingly, clamping blocks are fixedly installed on the tops of the inserting rods correspondingly, first springs are fixedly installed above the opposite sides of the two inserting rods, and connecting rods are hinged to the positions, located below the first springs, of the opposite sides of the two inserting rods correspondingly. The other ends of the two connecting rods are hinged to the t