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Experimental Study on Loosening and Vibration Characteristics of Vibrating Screen Bolts of Combine Harvester

Author

Listed:
  • Lulu Yuan

    (School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China)

  • Meiyan Sun

    (School of Transportation Engineering, Jiangsu Shipping College, Nantong 226010, China)

  • Guangen Yan

    (Xinjiang Production and Construction Corps Fourth Division Chuangjin Agricultural Development Group Co., Kokdala 835219, China)

  • Kexin Que

    (School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China)

  • Bangzhui Wang

    (School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China)

  • Sijia Xu

    (School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China)

  • Yi Lian

    (School of Transportation Engineering, Jiangsu Shipping College, Nantong 226010, China)

  • Zhong Tang

    (School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
    Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, Jiangsu University, Zhenjiang 212013, China)

Abstract

Due to the complex operating environment of combine harvesters, uneven terrain, multiple vibration sources, and complex transmission systems, failures easily occur in critical working components, especially the bolted connections of the vibrating screen. To address these issues, this study first established a bolt-tightening mechanical model. Secondly, a finite element simulation of the preload force was performed using Ansys Workbench software (2023R2). The simulation results showed that the bolt head area exhibits a ring-shaped strain distribution. To determine the critical state of bolt loosening, a single-bolt loosening test was conducted. The experimental results indicated that when the bolt pressure decreased to 78.4 N and the torque decreased to 0.5 N·m, bolt loosening intensified, and the pressure value showed a sharp decreasing trend. These pressure and torque values can be defined as the bolt loosening threshold, providing an important reference basis for subsequent monitoring and early warning. Finally, to more realistically simulate actual working conditions, a combine harvester field vibration test was conducted. By arranging triaxial acceleration sensors on the bolted connections of the vibrating screen, acceleration signals were collected under both low-speed and high-speed field operating conditions. Time–frequency analysis was performed on the signals to extract characteristic values for each measurement point. The field vibration test results showed that the characteristic values of the transmission shaft bolt structure of the vibrating screen were at a relatively high level, indicating that this part is subjected to a large vibration load. Furthermore, frequency domain feature analysis revealed that the vibration frequency components in this area are complex, which further increases the risk of bolt loosening. This study provides an in-depth analysis of the loosening characteristics and vibration characteristics of the vibrating screen’s bolted connections in combine harvesters. The results provide an important theoretical basis and technical support for the online monitoring of failures in the vibrating screen’s bolt structure.

Suggested Citation

  • Lulu Yuan & Meiyan Sun & Guangen Yan & Kexin Que & Bangzhui Wang & Sijia Xu & Yi Lian & Zhong Tang, 2025. "Experimental Study on Loosening and Vibration Characteristics of Vibrating Screen Bolts of Combine Harvester," Agriculture, MDPI, vol. 15(7), pages 1-21, March.
    • Handle: RePEc:gam:jagris:v:15:y:2025:i:7:p:749-:d:1624980
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    References listed on IDEAS

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    1. Elbeltagi, Ahmed & Srivastava, Aman & Deng, Jinsong & Li, Zhibin & Raza, Ali & Khadke, Leena & Yu, Zhoulu & El-Rawy, Mustafa, 2023. "Forecasting vapor pressure deficit for agricultural water management using machine learning in semi-arid environments," Agricultural Water Management, Elsevier, vol. 283(C).
    2. Fu Zhang & Zijun Chen & Yafei Wang & Ruofei Bao & Xingguang Chen & Sanling Fu & Mimi Tian & Yakun Zhang, 2023. "Research on Flexible End-Effectors with Humanoid Grasp Function for Small Spherical Fruit Picking," Agriculture, MDPI, vol. 13(1), pages 1-18, January.
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