A power rake.Improved structure of scarifier,The system includes a fixed disk.The central position of the fixed plate is provided with a through fixing hole.The periphery of the fixed plate is bent downward and provided with more than two sheet blades.The blade of the sheet is inclined at least 20 degrees to the rotation direction.The slant also makes the blade longer than the straight blade of the same height.It's more durable.Tilt so that no matter how high it is worn,It can maintain the sharpness of the edge.The periphery of the connection between the fixed disc and the slice edge is punched out with a circular arc edge.The edge of the arc circle is separated by a distance to break a gap.In order to make the edge of the arc smooth without wrinkles or deformation.一種動力耙草、鬆土器改良結構，係包含有：一固定盤，固定盤的中央位置設有貫穿的一固定孔，固定盤的周邊往下彎設二個以上的片狀刃部，前述片狀刃部並往旋轉方向傾斜至少20度角以上，傾斜也使片狀刃部較習知同高度的直刃長，而得以更耐磨，傾斜使其無論磨損至何高度，均可保持刃端的銳利度，固定盤與片狀刃部連接處周邊並沖出一弧圓邊部，弧圓邊部間隔一距離沖斷一缺口，以使弧圓邊部沖出形狀較平滑而不會有皺摺或變形者。
