Rocker arm device of vertical mill

The utility model relates to the technical field of vertical mill equipment and specifically relates to a rocker arm device of a vertical mill. The rocker arm device of the vertical mill is characterized in that a rocker arm (2) is mounted on a rocker arm shaft (1), one end on the left side of a transmission fork block (3) is connected with the rocker arm shaft (1), one end on the right side of the transmission fork block (3) is connected with the rocker arm (2) through a transmission pin (7), a shaft head (4) is embedded and mounted on the transmission fork block (3), and the shaft head (4) is connected with the transmission fork block (3) through a transmission pin (6). The rocker arm device disclosed by the utility model has the advantages of realizing turnover within 0-180 degrees of the shaft head, solving the problem that an existing rocker arm system of the vertical mill can not perform online overlaying welding repair on a grinding roller, further realizing online overlaying welding repair of a grindi