Design and Experiment of Potato Hiller Based on the Principle of Self-excited Vibration and Drag Reduction

Aiming at the problem of large soil cultivation resistance in the hilly and heavy soil conditions of Yunnan Province, a new type of potato field soil cultivation device was designed based on the principle of self-excited vibration and drag reduction. Carry out the design of the soil surface and the selection of the spring, and use the finite element analysis software to check the strength of the shovel handle. The results show that it meets the requirements of the strength design. The results of the soil trough comparison test show that when the tillage depth is constant, with the increase of the forward speed, the traction resistance of the two types of soil cultivators gradually increases; At various speeds, the self-excited vibrating soil cultivator reduces the drag by 9.33%-19.84% compared with the fixed connection soil cultivator, and the drag reduction effect is obvious.