Threshing device of self-propelled flax threshing reverse-laying device

The invention discloses a threshing mechanism of a self-propelled flax threshing spreading machine, including a rack, a pair of smooth rollers for pressing flax arranged up and down and a pair of threshing awl rollers arranged up and down, wherein, the smooth rollers for pressing flax are driven by a pair of hydraulic motors, the rotation of the threshing awl rollers at same speed and in different directions is realized by a universal joint through two output shafts of a gear box which is driven by another hydraulic motor, and a plurality of stirrups are alternately arranged on the threshing awl rollers along the axial direction. The spreading machine picks up the retted flax in the field, transports the flax to a turning belt behind the machine by a delivery mechanism and puts the flax in strips; during the transportation process, a pair of smooth rollers for pressing flax grind the flax peaches, a plurality of smooth stirrups alternately arranged on the threshing awl rollers carry out hackling and threshing