Lotus seedpod threshing machine based on shaking reducing threshing channel

The invention discloses a lotus seedpod threshing machine based on a shaking variable-diameter threshing channel. The lotus seedpod threshing machine comprises a threshing assembly and a lotus seed-lotus seedpod scrap separating assembly. The threshing assembly is used for breaking lotus seedpods to achieve threshing and comprises a threshing cylinder, a first threshing channel with a vibration reducing function and a threshing pressing plate vibration assembly. The first threshing channel can be shaken to change the diameter, so that the adaptability to lotus seedpods with different sizes is improved; besides, in the threshing process, the arc-shaped shaking threshing pressing plate in the channel and the pressing plate elastic columns installed on the arc-shaped shaking threshing pressing plate do reciprocating shaking motion and are combined with the gradually-changed convergent threshing channel and the threshing roller, the insertion, extrusion, rubbing and tearing effects on the lotus seedpods are enhan