Structure for connecting driving roll in fan-shaped section of continuous casting machine

A structure for connecting a driving roll in a fan-shaped section of a continuous casting machine is respectively connected with the driving roll and a driving universal shaft both in the fan-shaped section of the continuous casting machine, and comprises two connecting flanges, a plurality of connecting through-holes and a connecting key pin. The two connecting flanges are respectively connected with the driving roll and the driving universal shaft both in the fan-shaped section, and key grooves are radially formed on opposite surfaces of the two connecting flanges in a corresponding manner. The plurality of connecting through-holes are formed on the end surfaces of the two connecting flanges and connected with the two connecting flanges via bolts. A through-hole is formed at the lower end part of a T-shaped connecting key pin; and the lower part of the connecting key pin is inserted into a pin hole formed by the two key grooves connected with the two connecting flanges, the upper part is transversely spanne