Wear Calculation Method of Tripping Mechanism of Knotter Based on Rigid–Flexible Coupling Dynamic Model

Jianjun Yin (), Yansu Gao, Ruipeng Guo, Shiyu Lv, Maile Zhou and Deng Yu
Additional contact information
Jianjun Yin: School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
Yansu Gao: School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
Ruipeng Guo: School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
Shiyu Lv: School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
Maile Zhou: School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
Deng Yu: Heilongjiang Academy of Agricultural Machinery Engineering Sciences, Haerbin 150081, China

Agriculture, 2025, vol. 15, issue 21, 1-17

Abstract: Targeting the problem of lack of theoretical model for wear calculation of key actuators in the knotter, a tripping mechanism of knotter based on the principle of elastic deformation was designed. A rigid–flexible coupling dynamic analysis model of the tripping mechanism was established based on the modal stress method, and the contact force time history curves and dynamic stress results between the groove cam and the ball roller, as well as between the knotter jaw and the tripping plate slot, were simulated. Based on MSC, Marc MENTAT, a finite element wear calculation model of the tripping mechanism, was constructed. Through 600 simulations equivalent to 6000 working cycles, the wear cloud maps of the tripping plate and the large gear groove cam were obtained, and the key wear areas and expansion trends were analyzed. The rapid wear tests were conducted by using a self-made knotter fatigue wear test bench, which showed that the maximum deviation between the measured value and the simulated value of the contact pair wear was less than 10%. This verified that the proposed wear model for the tripping mechanism can be used for calculating the contact pair wear of the mechanism, providing a reference for the heat treatment process of the surface hardness of the parts.

Keywords: knotter; tripping mechanism; rigid-flex coupling dynamic; wear calculation; fatigue life (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
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/2077-0472/15/21/2229/pdf (application/pdf)
https://www.mdpi.com/2077-0472/15/21/2229/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jagris:v:15:y:2025:i:21:p:2229-:d:1779703

Access Statistics for this article

Agriculture is currently edited by Ms. Leda Xuan

More articles in Agriculture from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().