Vehicle movement driving device for onion harvester

The present invention relates to a driving device for moving a vehicle for an onion harvester to make direction change such as curve turn or U-turn by lifting front and rear wheels from the ground among wheels mounted on the both sides when a driver changes direction and by driving only middle wheels mounted nearby on the ground to minimize a radius of the rotation. Therefore, the present invention can be driven on all wheels while traveling to exert a maximum force and can at most reduce the radius of the rotation when a driver changes direction such as curve turn and the U-turn of the vehicle, thereby quickly performing the redirection and maximizing working efficiency even in roads with narrow and sharp curves and a narrow work space.