Response Characteristics of Harvester Bolts and the Establishment of the Strongest Response Structure’s Kinetic Model

Li Wang, Guoqiang Wang (), Xujun Zhai, Zhong Tang, Bangzhui Wang and Pengcheng Li
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Li Wang: Department of Agricultural Engineering, Jiangsu Agri-Animal Husbandry Vocational College, Taizhou 225300, China
Guoqiang Wang: Department of Agricultural Engineering, Jiangsu Agri-Animal Husbandry Vocational College, Taizhou 225300, China
Xujun Zhai: Department of Agricultural Engineering, Jiangsu Agri-Animal Husbandry Vocational College, Taizhou 225300, China
Zhong Tang: School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
Bangzhui Wang: School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
Pengcheng Li: School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China

Agriculture, 2024, vol. 14, issue 7, 1-31

Abstract: The bolts and connections of each working part of a rice combine harvester can suffer from severe instantaneous impacts and alternating loads, and these strong impacts and loads cause instantaneous fracture and fatigue failure of the bolt face and even the loosening, detachment, and fracture of the bolt. The main vibration directions and the most complex vibration parts of the bolts and connections in the main working parts of a combine harvester under time-variable multiload excitation were obtained through the analysis of response signals in terms of time-domain and frequency–domain characteristics via a vibration response experiment. This study revealed that the random peak value of the vibrating screen is 12.5622, which is the severe impact and collision standard. For the vibrating screen, the local peak in the 4-Y direction was the main load of the destroying bolt connection (the impact reached 60.57 m/s 2 , 96.91 m/s 2 ) and the vibration energy intensity in the 4-Z direction was mainly concentrated at 12.42 m/s 2 , which is the maximum vibration energy value in the three directions (the peak vibration value reached 109~115.68 m/s 2 ), so the bolted connections of the vibrating screen are the most vulnerable to destruction. Therefore, a kinetic model and a microscopic response model of a vibrating screen were established via the centralized mass method to explore the kinetic response characteristics of bolted structures subjected to multiple excitation loads, thus providing a mathematical model for identifying the features of bolted connections based on static characteristics.

Keywords: bolt failure; combine harvester; bolt vibration; kinetic model; microscopic response model (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: 2024
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