Adjustable maintenance ladder for aviation maintenance

The adjustable maintenance ladder comprises escalator standing feet, supporting rods are arranged at the top ends of the escalator standing feet, escalator pedals are arranged between the supporting rods, fixing sleeves are arranged on the supporting rods, the fixing sleeves are arranged between the escalator pedals, and fixing bases are connected to the bottom ends of the escalator standing feet.Wherein the escalator standing foot is connected with the fixed base through a hinge, a fixed groove is formed in the fixed base, the escalator standing foot is arranged in the fixed groove, a connecting piece is arranged on one side of the escalator standing foot, a herringbone support is arranged beside the connecting piece, a side support is connected to the bottom end of the herringbone support, and the escalator standing foot is connected with the herringbone support through the connecting piece; the escalator is convenient to move and construct, the multiple sections of supporting rodsare unfolded when the esca