Optimization of a prototype grain threshing machine with internal combustion engine coupling

Abstract

Introduction: The thresher is an agricultural machine that cleans and separates the grain from the straw or any impurity, the analysis of the operation of the thresher prototype presents several deficiencies such as grain waste, inadequate cleaning, insufficient production, high vibration that displaces the machine during its operation, among others. Objective: Optimize the operation of the threshing machine prototype by analyzing the loads it supports and the behavior of its elements, thus allowing the development of a redesign and implementation of systems that increase its efficiency and productivity. Methodology: The methodology applied was experimental type where a redesign of the cleaning system, frame, shelling cylinder, and others, was developed to later conduct performance tests and an analysis of vibrations and productivity of the equipment that allow demonstrating the optimization conducted. Results: A beater cylinder was implemented on the axis of the shelling cylinder, in addition, the cleaning shoe was redesigned, increasing the surface to 139 cm2/m and the size of the screen holes was reduced to 2.25mm, the vibration analysis showed a reduction 38% maximum after optimization, grain loss was reduced by 22% and impurities in the final product by 20%. Conclusions: The general operation of the equipment was optimized, reducing grain processing times and increasing its production by 106.02% with a percentage of impurities less than 4%.