Attached tower crane verticality detection device and use method thereof

The invention relates to the technical field of tower crane perpendicularity detection, in particular to an attached tower crane perpendicularity detection device and a use method thereof. The first tower crane standard knot is positioned at the top end of the tower crane; a gravity part; the gravity part is mounted on the first tower crane standard knot and naturally droops by utilizing the gravity of the gravity part, and the gravity center line of the gravity part is parallel to the center line of the first tower crane standard knot; a second tower crane standard knot; the second tower crane standard knot is positioned at the bottom end of the tower crane; a detection unit; the detection part is installed on the second tower crane standard knot, the detection part is perpendicular to the center line of the second tower crane standard knot, the detection part is used in cooperation with the gravity part, and the perpendicularity between the first tower crane standard knot and the second tower crane standard