Working principle: The motor is used as the supporting power. The power is transmitted to the main shaft, and the gear at the other end of the main shaft transmits the speed-regulated power to the grass kun through the gear box, universal joint, etc. When the material to be processed enters between the upper and lower grass kuns, it is clamped by the pressure. It is held and fed into the cutting mechanism at a certain speed, shredded by a high-speed rotating cutter, and thrown out of the machine through the grass outlet.