Double-drum threshing machine

The invention relates to a double-drum threshing machine. The double-drum threshing machine comprises a power device, a machine body, a primary threshing device and a secondary threshing device, wherein the primary threshing device is composed of a primary threshing drum, a primary threshing sieve plate and the machine body, the secondary threshing device is composed of a secondary threshing drum, a secondary threshing sieve plate and the machine body, the primary threshing drum, the primary threshing sieve plate and the machine body form a first threshing cavity, the secondary threshing drum, the secondary threshing sieve plate and the machine body form a secondary threshing cavity, and the first threshing cavity is communicated with the second threshing cavity. The double-drum threshing machine provided by the invention has the advantages of simple structure, high threshing rate, low grain impurity rate, easy operation and wide application range. 本发明涉及种双滚筒脱粒机，包括动力装置、机体、次脱粒装置，二次脱粒装置，所述次脱粒装置由次脱粒滚筒、次脱粒筛板和机体构成，