Stair climbing machine

The invention relates to the technical field of stair climbing equipment, especially to a stair climbing machine. The stair climbing machine comprises a stair climbing machine keel frame, the stair climbing machine keel frame comprises a large wheel, a small wheel, a tail wheel, a hydraulic telescopic rod, a horizontal rod, a connecting rod, a motor and a lead screw, the rotating shaft of the motor faces downwards and is connected with the lead screw, a fulcrum is arranged at the end, away from the rotating shaft, of the motor, and the fulcrum is hinged to the large wheel through the hydraulictelescopic rod; a first sliding sleeve and a second sliding sleeve are arranged on the lead screw, the first sliding sleeve is located above the second sliding sleeve, a first clutch is arranged on the first sliding sleeve, the first sliding sleeve is further hinged to the large wheel through the horizontal rod, and a horizontal sensing device is arranged on the horizontal rod. The stair climbingmachine is reasonable in