About rational number of spindles on drums of cotton harvester

Abstract

The technological process in a cotton harvesting machine is carried out mainly with the help of spindle drums, doffers, and mechanisms that set them in motion. The contact of the spindles in the drums with the open bolls of the cotton during the harvesting process is due to the quality of the harvest and the full set of parameters of the drums, which should be paid attention to: diameters, the number of spindles in them, kinematics, the size of the open bolls and the size of the cotton. The article presents the analytical expression linking the parameters of the drum and the open bolls of cotton based on the analysis of the results of studies conducted in this direction and experiments. The graphs were constructed that reveal the essence of this connection, and their analysis was given. The article presents the results of comparative experiments on the example of a vertically-spindle cotton harvester with two pairs of sequentially arranged spindle drums with 12, 14, and 15 spindles on each drum with the same diameter kinematic mode of its operation. The results of theoretical and experimental studies have allowed us to conclude that an increase in the number of spindles in front paired drums contributes to an increase in the completeness of cotton harvesting from open cotton bolls.