Pre-cutting device of straw granulator

A pre-cutting device of a straw granulator belongs to the technical field of agricultural production machinery, and is characterized by comprising a V-shaped belt pulley A, a V-shaped belt, a support,a collecting chamber box body, a synchronous belt, a synchronous belt pulley, a direct-current motor, a V-shaped belt pulley B, a shaft, a mounting plate, a double-disc-belt-shaped one-way rotary cutter, keys, bolts, end cover screws, bearing end covers, bearing transparent covers, transparent cover screws and screws. The pre-cutting device of the straw pelletizer is used for pre-cutting crops, so that large-section straws are cut into small straw fragments, the working power consumption and harvesting loss of the crushing chamber are reduced, the blockage fault of the machine caused by the blockage of the large-section straws is prevented, the cutting amplitude of the double-disc-strip-shaped one-way rotary cutter is large, and the double-disc-strip-shaped one-way rotary cutter runs stably; the precision is high