Research on the Structural Design of a Nail-tooth Roller for Peanut Shelling

Peanut, as an important grain and oil crop, requires shelling before oil pressing, consumption, or planting. To address the issue of labor shortages resulting from population aging, this paper presents a peanut shelling mechanism using a nail-tooth roller method to tackle this problem. Based on the structure of peanuts, the characteristics of shelling are analyzed, and a structural design employing motor-driven and a combined cleaning method of "vibrating screen + air selection" is adopted. Finite element analysis is conducted on critical components to verify their structural compliance with stiffness and strength requirements, while also validating the feasibility of the peanut sheller.