Stair climbing robot

A stair climbing robot relates to the technical field of stair auxiliary equipment and comprises a power mechanism and a steering mechanism, the power mechanism comprises a first motor and a power shaft, first gears are symmetrically mounted at two ends of the power shaft respectively, racks are mounted at the bottoms of handrails, and the first gears are in meshing transmission with the racks; the handrail is further provided with an upper guide rail, upper guide wheels are symmetrically installed on the upper supporting plate, and the upper guide wheel on one side is clamped on the upper guide rail to roll; the steering mechanism comprises a vertical shaft and a cantilever; the vertical shaft is vertically installed on the upper supporting plate. One end of the cantilever is hinged to the vertical shaft, a vertical rod sliding vertically is installed at the other end of the cantilever, an electric wheel is installed at the lower end of the vertical rod, a wheel shaft of the electricwheel is perpendicular to