Potato harvester

The utility model discloses a potato harvester which is composed of a machine frame, a conical screening mechanism, a reversing speed reducing mechanism, a reversing chain transmission mechanism, a middle transmission mechanism, a main transmission mechanism, a tractor connecting piece, a crank, a swing seat, a soil shoveling mechanism, a conveying mechanism, a screening transmission mechanism and a potato containing bag. The front end of the soil shoveling mechanism is made into a tooth-shaped structure, the tractor drives the main transmission mechanism to rotate, drives the middle transmission mechanism to rotate, drives the conveying mechanism and the reversing speed reducing mechanism to operate, the main speed reducing mechanism drives the crank to rotate, the crank drives the soil shoveling mechanism to shake, the soil shoveling mechanism digs potatoes, and the potatoes and silt are subjected to potato-soil separation on the conveying mechanism. The potato harvesting and packaging machine has the advan