Traveling crane protective device

The utility model relates to a traveling crane protective device, which comprises a roller casing arranging on a traveling crane. The device is characterized in that: a left and a right traveling crane protection switch mechanisms are respectively arranged on the left and the right sides of the casing of the roller, the protection switch mechanisms comprise movable swing stems whose upper ends are pivoted on the casing of the roller, travel switches arranged on the external sides of the movable swing stems and controlled through the triggering of the lower portions of the movable swing stems under the driving of an inclined hoisting steel wire. The travel switches are fixedly connected on the lower portion of the casing of the roller, and the lower portions of the movable swing stems are provided with springs capable of resetting the movable swing stems. The device can cut off a drive circuit of an electric block in time through the left and the right traveling crane protection switch mechanisms when the incl