| 摘要 |
PURPOSE: A harrow folding device is provided, which makes long term usage possible by extension of lifetime and smooth operation. CONSTITUTION: A harrow folding device comprises: an elevating cylinder(30) which is installed in a supporting frame body(10) in order to elevate a harrow main body(20); a connection link(35) in which one side is connected to the elevating cylinder or supporting frame body and the other side is hinge-coupled with one side of the rotational plate; a rotation link in which one side end is hinge-coupled with the harrow main body by a first fixed shaft; and a support link(50) supporting an auxiliary harrow. |
