Stopper lock plate for stopping of aeroengine in assembly and lock plate bending device

The invention discloses a stopper lock plate for stopping of an aeroengine in assembly and a lock plate bending device. The stopper lock plate comprises a flat plate portion and a bent portion, the flat plate portion and the bent portion are arranged in an L-shaped form, a corner between the flat plate portion and the bent portion is of arc transition, the flat portion includes a ring segment, the ring segment is provided with a plurality of saw-tooth structures distributed in the radial direction, each saw-tooth structure is bent from the middle at 20-30 DEG, the bent direction of the saw-tooth structures is identical with that of the bent portion, and the bent parts of the saw-tooth structures are positioned at 1/2 to 3/4 of the saw-tooth structures from the tip to the root. The upward bends of the saw-tooth structures provide bottom elastic buffering during nut connection, multistage peripheral limit stopping is provided for all sides of a nut, and accordingly, the nut is prevented from loosening in a high