Sealing structure of guide wheel

The utility model discloses a sealing structure of a guide wheel, which comprises a floating oil seal assembly arranged between a pair of symmetrical rotating supports and the end face of a wheel body, two floating seal cavities are respectively formed between the end faces of the two rotating supports and the two sides of the wheel body, a pair of floating seal rings are symmetrically arranged in the two floating seal cavities, the peripheral surfaces of the floating seal rings are conical surfaces, and the floating oil seal assembly is arranged in the floating seal cavities. Sealing rings are arranged between the floating sealing rings and the floating sealing cavity, and the side faces of the two floating sealing rings make contact with each other. The floating sealing cavity comprises cavity walls and a cavity bottom, the end faces of the rotating supports are provided with annular edges facing the wheel body, the annular edges form the cavity bottom of the floating sealing cavity, the cavity walls symmet