Steering device and gantry crane

The invention provides a steering device and a gantry crane, and relates to the technical field of construction equipment, and the steering device comprises a mounting plate, a sheath and a rotating base. The mounting plate is used for being flatly laid and fixed to the walking wheel box, the first end of the sheath is connected to the mounting plate, and the second end of the sheath extends in the direction away from the mounting plate. The rotating base is arranged in the sheath, the first end of the rotating base makes contact with the mounting plate, the second end of the rotating base is used for being hinged to the lower supporting point, and the rotating base can rotate relative to the mounting plate and the sheath. Therefore, when the walking wheels of the walking wheel box walk along the curve track, the walking wheels make contact with the track, so that the mounting plate and the protective sleeve rotate relative to the rotating base, the end face of the first end of the rotating base rotates in a