Effect parameters of vertically spindle cotton picker machines on the mechanical damage of cotton seeds during machine harvesting

Abstract

The article describes the influence of factors as a suction and injection method of transporting raw cotton from a harvesting machine to the mechanical damage of cotton seeds. The influence of the rotation speed and design of the fan impeller, as well as the width of the working slit of the harvesting apparatus on the formation of an undesirable defect, that is, mechanical damage to cotton seeds are examined. Recommendations are proposed to reduce the mechanical damage to cotton seeds. Rotating the spindle together with the drum, the cotton is transported to the pick-up area, where due to the spindle reversal due to the epicycle mechanism of its drive, the bulk of the cotton is inertia (up to 75-80%) discharged from the spindle surface, and part of the cotton windings is removed by brush pullers rotating in the same direction ( while the linear speed of the brushes is 4 times greater than the peripheral speed of the spindle) and under the action of centrifugal force, the cotton from the surface of the puller is dumped into the slotted receiving chamber of the harvester apparatus.

Evaluation of the coupling forces of the spindle roller with the drive belts to improve the cotton harvester

“…with the inner belts in the removal area, it rotates freely for a while by inertia until it hits the outer belts at the beginning of the working area. The dimensions of the serial V-belt, especially its high bending stiffness, allow the serial roller to easily orient itself at the initial moment of its collision with the belt [7]. However, small wedges, especially the flexibility of the V-ribbed belt, make it somewhat difficult for a new roller to quickly run over with the exact orientation of its wedges relative to the belt wedges.…”

Model description and performance calculation of the cotton harvester with a changed direction of rotation of the spindles

“…Various types of cotton harvesters are used to harvest cotton. The publications of well-known scientists [2][3][4][5][6][7][8][9][10][11] describe the design of the working bodies of cotton harvesters, and the main stages in the development of one, two, four, and six-row cotton harvesters. Previous pilot studies have confirmed that, depending on the cotton variety and the agro technical condition of soil, cotton yields can increase up to 8 t/ha.…”

The need for instrumental measurement of the traction force of the friction drive of the vertical spindles of the cotton harvesting machine

“…This is noted by machine operators. Therefore, it is necessary to introduce into the service department of these machines the need to check the tension of the belts [6][7][8].…”