This work is about a weeding knife.The weeding knife is pivoted on a rotating disc by a pivoting part.The pivoting part comprises a fixing column and a fixing cap；Among them,The first fixing hole is penetrated through the peripheral edge of the rotating disk.For the corresponding penetration of the fixed column,Make the bottom of the fixing column just set in the first fixing hole；The bottom end of the fixed column and the bottom surface of the rotating plate around the bottom end are welded to form a welding part.The fixed column is fixed on the peripheral edge of the top surface of the rotating disk.Provide the corresponding insertion of the pivot hole on the weeding blade.The fixed column is sleeved with gasket.The edge around the gasket and the weeding knife around the gasket are welded to form a welding part；Among them,The fixing cap is longitudinally provided with a second fixing hole.The fixing cap is sleeved on the fixing post.And the top of the fixing column is lower than the top of the second fixing hole of the fixing cap.The fixed column and the top of the fixed cap are welded to form a welding part.To limit the weeding blade on the fixed column and pivot it on the top surface of the rotating disk,Improve the stability and safety of high-speed rotation of weeding blade.本創作係關於一種除草刀，該除草刀係藉由樞接部樞設於旋轉盤上，所述樞接部包含固定柱及固定帽；其中，旋轉盤圓周邊緣穿設有第1固定孔，以供固定柱對應穿入，令固定柱底部剛好設置於第1固定孔內；該固定柱底端及其底端周圍之旋轉盤底面焊接形成有焊接部，以將固定柱固設突出於旋轉盤之頂面圓周邊緣上，提供除草刀上之樞接孔對應套入，且固定柱上套設有墊片，墊片四周邊緣及其外圍之除草刀焊接形成有焊接部；其中，固定帽縱向穿設有第2固定孔，該固定帽係套設於固定柱上，且固定柱頂端低於固定帽之第2固定孔之頂端，固定柱與固定帽頂端焊接形成有焊接部，以將除草刀限位於固定柱上並樞設於旋轉盤頂面上，提高除草刀高速轉動之穩定性與安全性。
