Screening transmission mechanism

The utility model discloses a screening transmission mechanism and belongs to the technical field of mining machining. The screening device solves the problems that an existing screening device used for screening raw materials such as ore and coal is low in screening rate, and screening shafts are prone to being clamped or stuck when the raw materials with large humidity are screened. A plurality of transmission mechanisms are evenly distributed on a box body, transmission shafts of the transmission mechanisms are arranged in the box body, a motor is connected with the transmission shafts through a coupler, the two ends of each transmission shaft are axially and radially positioned through self-aligning roller bearing assemblies respectively, a plurality of screen pieces are arranged on the transmission shafts, and the screen pieces are reuleaux triangle screen pieces. The screening pieces are arranged in the box body, a plurality of screening grooves are machined in the screening pieces, the screening pieces