The invention provides a high-
automation-degree corn thresher, which comprises a supporting plate, a feeding hopper, a discharging tank, a
crankshaft, connecting rods, an annular plate, sleeve plates,pressure bearing wheels, a slide groove, carrier plates, retaining rings, hinge shafts, push rods,
threshing teeth, driven grooves, a belt
pulley, convex plates and truss plates. The feeding hopper and the discharging tank are fixedly connected above and below the exterior of the supporting plate respectively, and the middle of the supporting plate is penetratingly provided with the slide groovewhile left and right sides of the supporting plate are provided with the carrier plates. By rotational connection between the connecting rods and
crank necks of the
crankshaft, the connecting rods above the middle of the slide groove move under the linkage action of the
crankshaft, the push rods circularly
push and pull under the action of the retaining rings to continuously push corn cobs into the annular plate, and the corn cobs are threshed by the
threshing teeth in the annular plate, so that the semi-
automation level of the corn thresher is raised.