Crane safety device

The utility model discloses a crane safety device which comprises a crane carrier chassis, an operation room facilitating functional operation is installed in the middle of the upper surface of the crane carrier chassis, an inner groove allowing a winding drum to rotate therein is formed in the right side wall of the operation room, and an isolation belt is connected to the outer portion of the winding drum in a winding mode. The isolation belt is hollow and inflatable, the head of the isolation belt is fixedly connected with an insertion rod facilitating fixation of the isolation belt, the other end of the insertion rod is fixed in an insertion groove in an inserted mode, the insertion groove is fixedly connected to the left side wall of the operation room, and an air inlet allowing air to be pumped in is formed in the outer wall of the head end of the isolation belt. And an air blower for inflating the isolation belt is mounted in the left side wall of the operation room. The problems that in a city, the pa