The utility model relates to a grain mixing device, driving motor, support plate,
gyration axle, rotary support frame, mixing
barrel assembly and autorotation mechanism, driving motor output end and
gyration axle one end transmission connection,
gyration axle other end passes through support plate and is fixedly connected with rotary support frame, autorotation mechanism one end is connected with support plate, and its other end is transmission connection with mixing
barrel assembly, and rotary support frame is rotationally connected with mixing
barrel assembly, and rotary support frame rotates around first axis under the drive of gyration axle, and autorotation mechanism is used for driving mixing barrel assembly to rotate around second axis, and first axis is perpendicular with second axis. Driving motor drives gyration axle to rotate, drives rotary support frame to rotate around first axis, simultaneously drives mixing barrel assembly to rotate around second axis through autorotation mechanism and second transmission assembly, realizes mixing barrel assembly to carry out the stirring to grain from different directions, ensures grain sample even mixing, reduces manual labor intensity, improves mixing efficiency.