Optimization of Blade Structure for a Straw Returning Machine

To address the problem of insufficient impact resistance and easy damage of blades in straw returning machines, which affects the efficiency of straw crushing, an optimization design of the blade structure for straw returning machines was carried out to enhance the strength of the blades. Based on the geometric dimensions of the physical L-shaped blade for straw returning, a mathematical model was established using simulation software. Reinforcement was added to the blade to optimize the structural design. By comparing and analyzing the internal stress of the blade before and after optimization, the optimal bending angle of the blade was determined. When the applied load varies within a certain range, a comparative analysis of the deformation of the tool before and after optimization was conducted, and the results showed that the deformation of the blade after optimization was significantly reduced. Therefore, the L-shaped blade for straw returning with the optimal bending angle and reinforcement has stronger impact resistance, better environmental adaptability, higher efficiency in straw crushing, and extended service life.