WIDE-WIDTH HARROW HAVING FOLDABLE SUPPLEMENTARY HARROW PLATES

摘要

PURPOSE: A wide-width harrow having foldable supplementary harrow plates is provided. The supplementary harrow plates are folded to prevent the levee of a rice paddy or harrow plates from being damaged, even if one end of the harrow plates is bumped against an obstacle in the levee of a rice paddy when evening a paddy field. CONSTITUTION: The wide-width harrow having foldable supplementary harrow plates comprises: a frame(10) being elevated by a hydraulic cylinder(15); a main harrow plates(20) installed at the rear end of the frame(10); a supplementary harrow plates(30) hinged on the both ends of the main harrow plates(20), which can move to the rear or upward; and springs(40) connected to the supplementary harrow plates(30) and the main harrow plates(20), which make the supplementary harrow plates(30) folded or unfolded.