| 摘要 |
PURPOSE: A disk harrow is provided to level a ridge between a furrow and a furrow formed by multiple disk ploughshares which rotate by being attached to left and right side supports when the disk harrow overturns farmland by being dragged by a rear part of a tractor, thereby improving the efficiency of leveling work of the farmland. CONSTITUTION: A disk harrow includes a pair of front disk ploughshares (2a) in front part of a tripod (1) combined to a combining part of a rear end central part of a tractor. Multiple side disk ploughshares (2b) are mounted on left and right side supports attached to both sides of the tripod. A pair of rear disk ploughshares (2c) is connected to the left and right side supports using an auxiliary support (4). The auxiliary support includes a foldable auxiliary support (4a) and a fixed auxiliary support (4b). The pair of the rear disk ploughshares mounted on the auxiliary support possibly adjusts an angle using an angle adjusting rod (5). The foldable auxiliary support is folded or spread by a hinge shaft (6) and is fixed by selectively inserting a fixing pin (7) into a use fit hole or a fixed fit hole (8b).
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