Problems in the air transport systems of cotton harvesting machines

Abstract

The article describes the analysis regarding the shortcomings of the horizontal and vertical spindle cotton picking machines manufactured in the country, based on the principles of operation and experiments of air transport systems that transfer cotton from the picking machines to the bunker. On the examples of JX-220 horizontal and semi-trailer vertical spindle machines with suspended structures, the moving air velocities in the air transport pipelines were measured using a Kanomax Anermomaster 6112 instrument and the results were interpreted. In high-yield fields, the decline in the harvesting qualities of machines of both constructions is to some extent characterized by defects in the air transport system. During the operation of the JX-220, the cotton collected and stuck in the front drum of the harvester is collected in the receiving chamber of the system due to the low air flow rate. The four-row MX-2.4 semi-trailer with a vertical spindle has a stairwell behind the tractor to facilitate maintenance, complicating the design of the air transport system. The experiments have shown that due to the increase in local aerodynamic resistance in the system pipes, the flow rate to transport the cotton to the bunker is insufficient. The results of analyses and experiments require research on the reduction of aerodynamic resistance in machine air transport systems.