The mobile gantry frame is a light and small lifting device which is shaped like a dragon gate and can be moved in all directions. The main girder of mobile gantry frame is the beam of steel and steel, which is both bearing weight and the transverse orbit of gourd. The legs of the gantry are equipped with a universal load wheel, which can be moved in all directions on the flat ground. The main beam of the dragon portal is connected by the flange plate with the flange plate, which can be quickly removed and installed, and the small car can be transferred to another site for installation. Lift 500 ~ 5000KG heavy loads by electric or hand pull gourd. It can reduce manpower, realize hoisting mechanization, reduce production and operation cost, improve work efficiency. In particular, it is applicable to die manufacturing enterprises, mines, auto repair factories, construction sites, logistics companies, machinery processing and manufacturing enterprises, warehouses, etc.