Non-linear stepless control soybean hundred-grain board

The invention provides a non-linear stepless control soybean hundred-grain board, which belongs to the field of agricultural machinery. A bottom plate fixedly equipped with a handle is equipped with alongitudinal pull rod, an intermediate plate, a longitudinal pull rod and a pressing plate through a long pin in sequence from the bottom up; the two ends of the intermediate plate are hinged with upper and lower hinge plates correspondingly; the upper hinge plate is hinged with an end hinge nut; the end hinge nut is rotatably equipped with a screw rod; the screw rod is in threaded connection with a nut hinge block hinged on the pressing plate; the middle portion of the upper hinge plate is provided with a pointer; transverse pull rods and side hinge plates are hinged between the upper and lower hinge plates from the inside out in sequence; the outer end of each longitudinal pull rod is hinged to the corresponding side hinge plate; 11 longitudinal pull rods and 11 transverse pull rods inthe upper and lower layers