Device for head flattening of single pass rolling hot steel plate to be straightened

The utility model provides a technical scheme of a device for head flattening of a single pass rolling hot steel plate to be straightened. The device comprises a cross beam, wherein the cross beam is hinged to a bracket through a fulcrum; mounting racks are arranged at the two ends of the cross beam; a circular shaft is mounted on each mounting rack; a steel wire rope I is hung on the circular shaft I positioned on the left side of the cross beam; a steel billet is mounted at the lower end of the steel wire rope I; a steel wire rope II is also hung on the circular shaft II positioned on the right side of the cross beam; an air cylinder is fixed onto the steel wire rope II; a positioning device is further mounted on the bracket of the cross beam, and is U-shaped; the cross beam is positioned in a U-shaped cavity of the positioning device. According to the device, the process for head flattening of the hot steel plate is finished, and the process is rapid, fast, and good in effect; the manufacture is simple, an