When threshing, workers should feed pine cones continuously and evenly. If the feeding amount is too large, it will cause the drum load to be too large, reducing the rotation speed, dropping the net removal rate and productivity, decreasing the quality of threshing. In severe cases, it will block the parking and damage the machine.

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If the feeding volume is too small, the productivity is low. And sometimes it will affect the removal rate. The indicators of clean stripping, quick stripping, less breakage, and low energy consumption are actually mutually restrictive. If it is to be cleaned well, the crushing rate will increase, the productivity will also decrease, and the energy consumption will increase.