KINEMATIC FEATURES OF THE ELLIPTICAL DRUM IN A COTTONHARVESTING MACHINE

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7 ноябр 2025

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KINEMATIC FEATURES OF THE ELLIPTICAL DRUM IN A COTTONHARVESTING MACHINE

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This study investigates the kinematic behavior of spindle drums designed on the basis of a planetary – cam – linkage mechanism (PCLM), with a particular focus on elliptical trajectories. Unlike conventional circular drums, non – circular spindle motion provides an expanded contact zone with cotton plants, variable spindle spacing, and adaptable speed modes, all of which contribute to improved harvesting efficiency. The research develops analytical expressions to determine the linear and angular velocities of spindles operating within elliptical trajectories. The mathematical model considers geometric parameters such as crank length, lever length, and the major and minor axes of the ellipse, establishing explicit relationships between spindle position and its velocity modes. Numerical experiments were conducted to analyze how variations in drum dimensions influence spindle dynamics. Results show that spindle speed is highly sensitive to changes in the major semi – axis and lever length, with larger values leading to significant increases in both linear and angular velocities. Graphical dependencies of spindle kinematic modes confirm that while speeds in the collection zone are comparable to circular drums, the elliptical configuration enhances the probability of spindle – boll interactions and facilitates cotton removal. The findings highlight the advantages of elliptical spindle trajectories and provide recommended design parameters for developing efficient cotton – harvesting apparatuses, ensuring smoother operation and higher productivity.

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Teglar

# mechanism# machine# drum# ellipse# linear velocity# apparatus# spindles# links# coordinates# speed modes

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ROI:

https://eroi.uz/11.0008/A1125-0014

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Foydalanilgan adabiyotlar

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