| 摘要 |
PURPOSE:To improve practicality by forming projecting lugs having flat projecting edge surface at certain intervals onto the outer periphery of a rubber tire having a narrow width, and forming propulsion lugs in projection so as to be at equal level to the flat projecting edge surface on the side surface, on the wheel for paddy field which has propulsion lugs for seedling planting machine, etc. CONSTITUTION:On traveling on a road surface, the flat surface formed onto the outer periphery of a projecting lug 5 and the flat surface on the outer periphery of the root part of a propulsion lug 6 form a grounded surface, and stable traveling is permitted. On a paddy field, the biting into the paddy field is regulated by the flat surfaces of the projecting lug 5 and the propulsion lug 6, and the transverse sliding is suppressed because of the shape, and the cultivated base is prevented from being damaged. With such constitution, practicality can be improved. |
