Detection device for measuring bounce-off amount and bounce-off direction of aircraft joint hole

The utility model discloses a detection device for measuring the bounce-off amount and the bounce-off direction of an airplane joint hole. The device comprises a dial indicator and a shell composed ofan upper shell and a lower shell. A guide hole for inserting a dial indicator rod is formed in the middle of the top of the shell; an ejector rod is slidably arranged below the dial indicator rod. Aflicking device is arranged at the lower end of the ejector rod; the bouncing-off device comprises a left connecting rod, a right connecting rod, a spring, a left bouncing-off rod and a right bouncing-off rod. The upper ends of the left and right connecting rods are respectively hinged with the lower end of the ejector rod; the lower ends of the left bouncing-off rod and the right bouncing-off rodare rotatably installed in the shell through bolts, the lower ends of the left connecting rod and the right connecting rod are hinged to the middle of the left bouncing-off rod and the middle of theright bouncing-off rod respe