Hydraulic lifting gantry crane

The invention relates to the technical field of cranes, in particular to a hydraulic lifting gantry crane. The hydraulic lifting gantry crane comprises a cross beam; a double-rod oil cylinder is horizontally arranged on the cross beam; two ends of the double-rod oil cylinder are rotationally connected with movable cranes; the movable cranes are slidingly mounted on the cross beam; two ends of the cross beam are connected with guide column bearing box bodies; the bottoms of the guide column bearing box bodies are perpendicularly connected with guide columns; the lower ends of the guide columns are connected with oil cylinder bearing box bodies; and bearing bases are arranged under extension stand columns. The hydraulic lifting gantry crane consists of two single gantries, is provided with track wheels at the bottom, can be linearly pushed in a workshop, is suitable for various containers and general goods with different lengths, has the advantages of small size, less occupied space, high adaptability, high saf