Levelness adjusting device for climbing frame and using method of levelness adjusting device

The invention relates to the technical field of building climbing frame leveling, in particular to a leveling device for a climbing frame and a using method thereof.The leveling device comprises a telescopic steel ruler and a positioning device, the telescopic steel ruler is L-shaped, and a first lock catch is arranged in the middle of the telescopic steel ruler; the positioning device is arranged at the corner end of the telescopic steel ruler, the positioning device is a mechanical positioning device, the mechanical positioning device comprises a steel tape, a magnetic pull ring and a second lock catch, the steel tape is arranged in the telescopic steel ruler, one end of the steel tape extends to the outside of the telescopic steel ruler and is fixed with the magnetic pull ring, and the steel tape is in sliding connection with the magnetic pull ring; the second lock catch is arranged on the periphery of the steel tape, the second lock catch is fixed to the telescopic steel ruler, and the telescopic steel ru