This utility model discloses an anti-clogging adaptive
threshing structure for a
sunflower harvester, comprising a transmission chamber. Inside the transmission chamber, several transmission rollers are evenly and movably arranged via a rotating shaft. Several levers are evenly and fixedly arranged on the surface of each transmission roller. An adaptive anti-clogging adjustment mechanism is located at the lower end of each transmission roller inside the transmission chamber. The adjustment mechanism includes a rotating shaft, a separating screen, a first fixed block, a second fixed block, and a damping cylinder. The rotating shaft is movably arranged on one side of the transmission chamber via a bearing, and the separating screen is fixedly arranged on the outer side of the rotating shaft. This utility model offers good performance. The separating screen can be connected via a rotating shaft and a spring, allowing the damping cylinder to compress and the separating screen to rotate when a large number of
sunflower trays are fed into the
machine at once. This increases the distance between the transmission rollers and the separating screen, thus preventing clogging.