Kinematics Analysis on Chain Tooth Rock Picker in the Farmland Soil

In view of the status of mountain farmland containing large amounts of gravel, rock picker which devoted to the task of picking stone in mountain farmland was studied. The rock picker contains separate gravel bar tooth and roller conveyor device which could pick up gravel and ensure the soil conditions of mountain farmland. In this paper, the interaction between the bar tooth and soil by method of kinetics as the rock picker operations were analyzed, mathematical model of resistance as cutting soil was created, and a horizontal traction equation based on the model was established. And the force of stone movement along grid tooth was studied and limits condition of slide and roll was established. The study results provided a reference for the design and improvement of rock picker.