Farmland furrow opener by cone disk clutch

The utility model relates to a farmland furrow opener which uses a cone disk clutch and comprises a gearbox arranged on a frame, a cutter head, a gear which drives a shaft of the cutter head to rotate, and a clutch. The utility model is characterized in that the clutch in the utility model uses the cone disk clutch. The optimization structure of the cone disk clutch has the technical proposal that a cone-shaped drive disk and a driven disk are arranged on the shaft and are tightly pressed by a spring, and simultaneously, a spiral type separator is used as an operating mechanism. The optimized spiral type separator has the technical proposal that a separating claw is arranged on one end of the driven shaft, an axial direction passage is arranged on the shaft, a top rod is put in the passage, one end of the top rod pushes the separating claw, and the other end pushes the driven disk. The utility model overcomes the disadvantages of the traditional clutch of no clear separation, no compact structure, etc. The utility model has the advantage of good separation effect, thoroughly eliminates the phenomenon of following rotation and effectively prevents an accident that the cutter head damages human beings, and a separating mechanism plays a role in braking to the driven disk under the state of separation. The radial direction dimension of the utility model which is optimized is largely reduced, and the structure is simple and compact.