Rotary cultivator with anti-shaft-breakage structure

The utility model relates to a rotary cultivator with an anti-shaft-breakage structure, and belongs to the technical field of agricultural mechanical equipment. The rotary cultivator with the shaft breakage prevention function is composed of a machine frame, a suspension frame, a gearbox, a cutter shaft, a rotary blade, a grass prevention rod and a cutter holder. A gearbox is installed in the middle of the rack, and a suspension frame is installed above the gearbox. Cutter shafts are symmetrically arranged on the two sides below the gearbox. One end of the cutter shaft is connected with the rack through a bearing seat; the other end of the cutter shaft is connected with an output shaft of the gearbox through a flexible connector; a supporting arm is fixedly arranged on the rack above the cutter shaft; the supporting arm is movably connected with the cutter shaft through a shaft sleeve; a plurality of tool aprons are spirally arranged on the circumferential surface of the tool shaft; and rotary blades are moun