The utility model relates to a knife claw disc structure of a cultivator.The four claw discs which are rotating are connected in series in the inner space of the movable cover plate at the rear end of the tractor.Each tooth plate in the transmission device drives a long transmission shaft and a short transmission shaft to actuate the left.The right one has a first claw disc and a second claw disc rotating downward.I thought that let left,The first claw disc and the second claw disc on the right side are positive respectively.Anti different turning movement；So that the work can be completed smoothly when the field is turned over.It can reduce the burden on each claw disc when encountering hard soil.To slow down the impact,It is to achieve the purpose of prolonging the life of machines and tools and convenient maintenance.一種中耕機之刀爪盤結構，係將呈轉動作用的四刀爪盤得串結在拖曳機後端的活動蓋板內部空間中後，再由傳動裝置內的各個齒盤帶動一長傳動軸及一短傳動軸來作動左、右個有一第一刀爪盤及第二刀爪盤呈轉動下，以為讓左、右兩邊的第一刀爪盤及第二刀爪盤分別呈正、反不同轉向運動；俾在田地做翻土作動時即可順利地完成工作，便可減輕對各個刀爪盤在遇到較硬土質時的負擔，以減緩所產生的衝力，是達到延壽機具及方便做保修目的。
