Mechanics simulation analysis of rotary drum combing type litchi picker爷s tooth profile plate

In order to improve the efficiency of litchi picking, reduce the working intensity and production cost, a kind of rotary drum combing type litchi picker was presented. As the key component of the litchi picker, the structure of the tooth profile plate was optimized according to the size of litchi fruit and the physical property of litchi branch. The change of stiffness and stress during the course of shearing was simulated in ANSYS finite element analysis platform. The results indicated that the total deformation of the tooth profile plate gradually increasing from the end of the panel to the area near the tooth top, reaching the maximum 2.324 mm; that the tooth surface area was a low stress zone and the distribution is uniform, with a safety factor 4.23; that the area near the bolt connection in the lower end face had the maximum equivalent stress about 436.84 MPa. The simulation data justified the reliability of the tooth profile plate, which provided a basis for the further optimization of its partial structure.