Double-knife-roller stubble-discharging potato seedling killing machine

The invention discloses a stubble discharging type potato seedling killing machine, which comprises an oblique bevel gear transmission mechanism, a belt transmission mechanism, a flail knife roller and a bidirectional spiral stranding cage, and is characterized in that power is efficiently input through tooth transmission, is reliably shunted through a belt transmission system with system protection, and is respectively transmitted to the flail knife roller and the bidirectional spiral stranding cage; the flail knife roller rotates to kill seedlings, and then crushed stubbles are conveyed to the two sides of the machine tool through the bidirectional spiral stranding cage. By the adoption of the scheme, transmission efficiency is high, the structure is simple, stable and reliable, seedling killing operation can be completed, broken stems and leaves can be discharged and conveyed to the two sides, broken stubbles in soil are reduced, secondary tillage is facilitated, and the cleaning efficiency during potato h