Soybean flexible low-loss threshing cylinder

The invention relates to a soybean flexible low-loss threshing cylinder, and belongs to the technical field of agricultural machinery. The roller comprises a roller body supported on a machine frame through a center shaft, one end of the roller body is a feeding section formed by a spiral feeding head, and the other end of the roller body is a separation section provided with a separation device on a shell of the roller body. A threshing section with at least six sets of threshing pieces evenly distributed on the outer shell of the roller body in the circumferential direction is arranged between the feeding section and the separating section, and each set of threshing piece is composed of a plurality of arch teeth which are arranged at intervals in the mode that the axial direction is dense in front and sparse in back. The two ends of the arch teeth are fixed on the shell of the roller main body at intervals along the circumferential direction of the roller main body; the distance between every two sets of th