Portal crane

The utility model discloses a portal crane and relates to the technical field of crane equipment. The portal crane comprises a supporting mechanism, a hoisting mechanism and a stabilizing mechanism, the hoisting mechanism comprises a hoisting frame, a sliding assembly and a lifting hook assembly, the sliding assembly and the lifting hook assembly are installed on the hoisting frame, the hoisting frame is slidably connected with the supporting mechanism through the sliding assembly, the lifting hook assembly comprises a lifting hook used for lifting a heavy object, and the lifting hook can lift or put down the heavy object. The stabilizing mechanism comprises a stabilizing connecting piece, one end of the stabilizing connecting piece is installed on the supporting mechanism, and the other end is connected with the lifting hook. When the lifting hook lifts a heavy object, the stable connecting piece stably supports the lifting hook, so that the lifting hook is prevented from driving the heavy object to rotate a