Turning track, stair climbing machine and stair climbing system

The invention discloses a turning track, a stair climbing machine and a stair climbing system, and relates to the technical field of stair climbing equipment, the turning track comprises a track main body and a rack arranged on the upper surface of the track main body, the top of the track main body bears a driving wheel, an anti-rollover mechanism is arranged between the track main body and the driving wheel, and the rack is engaged with the driving wheel; the track main body comprises a first linear track and a first arc-shaped track which are connected with each other, the top of the first linear track and the upper surface of the first arc-shaped track are respectively provided with a first linear rack and a first arc-shaped rack which are connected with each other, and the width of the first arc-shaped rack is smaller than that of the first linear rack; the stair climbing machine comprises a machine body, a driving mechanism arranged on the machine body, a first rotating wheel, a second rotating wheel an