Damage detection device for main beam of electric single-beam crane

The utility model discloses a damage detection device for a main beam of an electric single-beam crane, which comprises a suspension bracket and a data transmitter, the suspension bracket is movably mounted on the main beam of the crane and comprises a fixed support and a movable support, two parallel slide rails are fixedly mounted on the fixed support in a penetrating manner, the movable support is movably mounted on the two slide rails in a penetrating manner, and the data transmitter is arranged on the fixed support. The fixed support and the movable support are respectively provided with an advancing guide assembly, the advancing guide assemblies are kept in contact with a lower wing plate of a main beam of the crane, the fixed support and the movable support are respectively provided with a detection assembly, and the data transmitter is connected and installed at the bottom of the suspension bracket. The crane main beam damage detection device can move by means of the power of the crane main beam damag