Methods for calculating the deformation of doffer brushes during their interaction with spindle surface in the cotton harvester's removal zone

Conducting research studies in the agricultural sector to develop technological processes for mechanized cotton harvesting, as well as designing and testing components of cotton harvesting machines, is an urgent task. Although new methods have been developed to evaluate the technological process of mechanized cotton harvesting, in-depth theoretical research on modeling the interaction between the spindle and the cotton plant has not been thoroughly studied. Additionally, methods for calculating the deformation of the doffer brushes during their interaction with the spindle surface when raw cotton is wound onto the spindle in the removal zone of the harvesting apparatus have yet to be developed. This article focuses on calculating the deformation of the doffer brushes when interacting with the spindle surface in the removal zone of the harvesting apparatus. Numerical calculations and graphs created in the Mathcad-15 programming environment confirmed that for one bristle of the doffer brush, the maximum force is Pmax= 80.06 mN. At this force, the doffer brushes, in contact with the spindle teeth, are pressed against its surface due to their rigidity and penetrate maximally between the spindle teeth. Consequently, the quality of removal and the completeness of raw cotton collection by the harvesting device improve.