Provided are an automatic uniform distribution apparatus for threshed material from a harvester and an automatic adjusting method for same. The automatic uniform distribution apparatus for threshed material from a combine harvester comprises a tangential flow threshing and separating device (1), a shaking plate threshed material detecting device (2), a shaking plate (3), a shaking plate flow guiding mechanism (4), an axial flow threshing and separating device ( 6), a chaff screw conveyor (7), a return plate (8), a return plate flow guiding mechanism (9), a return plate threshed material detecting device (10), a vibrating screen (11), and an on-line detecting controller (12). Force sensors (205, 1005) are provided at lateral positions below discharge ports of the shaking plate (3) and the return plate (8) to measure flows of threshed material in lateral regions of the shaking plate (3) and the return plate (8)； the difference between the flows of the threshed material in said regions is used as an index to evaluate whether the threshed material is uniformly distributed； an on-line detection control system consisting of the force sensors (205, 1005), the on-line detection controller (12), and electric cylinders (403, 904) adaptively regulates the angles of the shaking plate and return plate flow guiding mechanisms. Thus, threshed material to be cleared from the combine harvester can be automatically uniformly distributed in real time, thereby facilitating the screening of grains and the blowing of an airflow, and remarkably improving the cleaning efficiency and cleaning performance under the condition of a determined cleaning area.La présente invention porte sur un appareil de distribution uniforme automatique pour un matériau battu à partir d'une moissonneuse et sur un procédé de réglage automatique pour ce dernier. L'appareil de distribution uniforme automatique pour un matériau battu à partir d'une moissonneuse-batteuse comprend un dispositif de battage et de sépar
