Centering device for fan-shaped section of beam blank continuous casting machine

The utility model discloses a centering device for a fan-shaped section of a beam blank continuous casting machine, which belongs to the technical field of continuous casting machines and aims to solve the problem of low centering adjustment efficiency of rollers in the fan-shaped section of the existing beam blank continuous casting machine. The centering device for the fan-shaped section of the beam blank continuous casting machine comprises a fan-shaped section support (1), an arc alignment sample plate assembly (2) and a sample plate supporting seat (3), when the arc alignment sample plate assembly (2) penetrates through the casting blank channel (51) of the fan-shaped section (5), the front end and the rear end of the arc alignment sample plate assembly (2) are both located outside the fan-shaped section (5), a gap exists between the arc alignment sample plate assembly (2) and a supporting roller (52) of the fan-shaped section (5), and the gap can be measured. The centering device for the sector section