Hydraulic gantry lifting mechanism applied to material dispensing in road construction

The utility model discloses a hydraulic gantry lifting mechanism applied to material dispensing in road construction, which relates to the field of road construction. The hydraulic gantry lifting mechanism is composed of a lifting mechanism, portals and a suspension mechanism, wherein a first-level hydraulic arm and a base are fixed to be whole, the bottom of the first-level hydraulic arm is provided with an oil inlet and an oil outlet, the oil inlet and the oil outlet are connected with a two-position three-way electromagnetic directional valve, and the bottom of a second-level hydraulic arm is provided with an open hole; a third-level hydraulic arm is also provided with a cross beam, and the cross beam is fixed on the portals by fasteners; each portal is of a rectangular frame structure, the bottoms of the two portals are respectively provided with a walking wheel and a protecting leg, the central positions of the tops of the two mutually corresponding portals are fixedly connected with a main beam, and the main beam bears loads; a suspension mechanism is arranged below the main beam; and the suspension mechanism comprises a lifting hook and a lifting lug, and the lifting hook is connected with the main beam by the lifting lug. Products of the utility model improve the lifting performances and lifting safety of existing gantry lifting mechanisms.