Design and Parameter Optimization of a Vertical Rotary Fixed-Angle Straw Cleaning Device

Naiyu Shi, He Li (), Bailin Jiang, Yan Chen, Jiaxing Cui, Wenyi Ji () and Huaiyu Zhang
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Naiyu Shi: School of Mechanical Engineering, Changzhou Institute of Technology, Changzhou 213032, China
He Li: School of Sciences, Changzhou Institute of Technology, Changzhou 213032, China
Bailin Jiang: School of Mechanical Engineering, Changzhou Institute of Technology, Changzhou 213032, China
Yan Chen: School of Mechanical Engineering, Changzhou Institute of Technology, Changzhou 213032, China
Jiaxing Cui: School of Mechanical Engineering, Changzhou Institute of Technology, Changzhou 213032, China
Wenyi Ji: College of Engineering, Northeast Agricultural University, Harbin 150030, China
Huaiyu Zhang: School of Mechanical Engineering, Changzhou Institute of Technology, Changzhou 213032, China

Agriculture, 2025, vol. 15, issue 20, 1-19

Abstract: This study addresses the challenges encountered in mechanized agricultural fields, particularly the soil disruption associated with conventional horizontal rotary straw cleaning equipment. To mitigate the inefficiency of straw cleaning observed in the current vertical rotary apparatus, this study introduces a vertical rotary fixed-angle straw cleaning device. The essential conditions for establishing the cutter tooth angle were identified through theoretical analysis. Analyzing the kinematics of the cutter tooth to direct the movement of the straw, we determined that the deflection angle of the cutter tooth group (DA) is a critical parameter for enhancing the effectiveness of straw cleaning. A multiphase interaction model encompassing soil, straw, and machinery components was developed utilizing a coupled simulation approach with RecurDyn and EDEM software. The Box–Behnken response surface methodology was employed to systematically investigate the interaction effects of three critical parameters on both the straw cleaning rate and the soil disturbance rate: operation speed (OS), rotation speed of the straw cleaning rotary table (RS), and the DA. For optimization experiments where the OS is set to 2.4 m/s, RS is 400 r/min, and DA is 48°, the straw cleaning rate reaches 94.1% and the soil disturbance rate is 27.2%. This device can efficiently create a localized clean seeding belt for no-till planters without significantly damaging the soil structure, providing an innovative solution for the development of low-disturbance, high-efficiency conservation tillage equipment.

Keywords: straw cleaning device; vertical rotary type; straw; EDEM; soil disturbance; Box–Behnken (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2025
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