Ladder device for movable hydraulic lifting platform

The utility model relates to a ladder device for a movable hydraulic lifting platform. In order to solve the problems in the prior art, the step device for the movable hydraulic lifting platform comprises a guardrail, two handrails, two oblique beams and N pairs of hinged vertical rods, an opening is formed in one side of the guardrail, upper hinged parts and lower hinged parts are arranged on the guardrail or vertical connecting rods on the two sides of the opening respectively, the upper ends of the two handrails are hinged to the upper hinged parts on the two sides of the opening through horizontal shafts respectively, and the lower ends of the two handrails are hinged to the lower hinged parts through horizontal shafts respectively. The upper ends of the two oblique beams are hinged to the lower hinge portions on the two sides of the opening through horizontal shafts respectively, the upper hinge portion, the lower hinge portion, the handrail, the oblique beams and the hinge vertical rods between the two