Hydropower station volute door auxiliary opening and closing device

The utility model discloses an auxiliary opening and closing device for a volute door of a hydropower station, which relates to the technical field of hydropower station power generation and comprises a fixed hanging ring arranged on the side edge of the volute door, a first fixed pulley arranged on a volute, a middle guide pulley arranged on a wall body, a pull rope and a manual chain block. The fixing hanging ring is arranged on the side edge of the volute door and fixedly connected with the volute door. The first fixed pulley is connected with the volute through the fixing support, and the fixing support is arranged at the position where the volute door and the volute are buckled. One end of the pull rope is connected with the fixing hanging ring, the pull rope sequentially penetrates through the first fixed pulley and the middle guide pulley to be connected with the bearing end of the manual chain block, and the manual chain block is installed on the wall on the side edge of the volute through a fixing cl