Experimental study on driver seat vibration characteristics of crawler-type combine harvester
Keywords:
crawler-type combine harvester, driver seat, vibration characteristics, ride comfort, damping, structure optimumAbstract
To improve the driving comfort of combine harvesters, driver seat low-frequency vibration and related driver ride-comfort problems were investigated on a Chinese CFFL-850 crawler-type full-feed combine harvester based on ISO2631. Driver vibration and driving seat transmission characteristics were measured under the following conditions: no-load idling, driving on the road, driving in the field, and simulated harvesting. The root mean square values composite vibration under four conditions were 3.63 m/s2, 2.35 m/s2, 3.34 m/s2, and 2.67 m/s2, respectively. For the same condition, the maximum root mean square scores of vibration component on driver whole-body occurred in the seat support surface (test point 1) and vertical direction (Z direction), which were 3.56 m/s2, 2.05 m/s2, 3.15 m/s2, and 2.43 m/s2, respectively. The test point 2 to test point 1 vertical-transfer function curve trends were nearly identical. Nearly all of the transfer coefficients were greater than 1 in the range of 1-50 Hz, therefore, the seat vibration attenuation performance was poor. Based on the analysis results, the driver seat structure was altered and a verification test was performed. The test results indicated that after an X-damping mechanism was installed, vibration acceleration, on the surface of the seat support under the road-driving conditions, decreased from 2.35 m/s2 to 1.68 m/s2. Under the simulated harvesting condition, the vibration acceleration decreased from 2.56 m/s2 to 1.46 m/s2. Nearly all of the seat vertical transfer coefficients were less than 1 within the frequency range of 1-80 Hz, therefore the dynamic comfort of the seat was ameliorated after structural improvement. Keywords: crawler-type combine harvester, driver seat, vibration characteristics, ride comfort, damping, structure optimum DOI: 10.25165/j.ijabe.20191202.3657 Citation: Xu L Z, Chai X Y, Gao Z P, Li Y M, Wang Y D. Experimental study on driver seat vibration characteristics of crawler-type combine harvester. Int J Agric & Biol Eng, 2019; 12(2): 90–97.References
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[22] GB/T 10910. Agricultural wheeled tractor and field operation mechanical driver whole body vibration measurement. Standards Press of China, 2004
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[24] ISO 10326-1. Mechanical vibration - Laboratory method for evaluating vehicle seat vibration. Geneva, Switzerland: ISO. 1992
[25] ISO 2631-1. Mechanical vibration and shock. Geneva, Switzerland: ISO. 1997
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[27] Liu Y H. Design and comfort analysis on engineering vehicle seat. Nanchang: China East Jiaotong University, 2013. (in Chinese)
[28] Zou J L, Qian Z J, Zhou Y M. Study on small tractor driving seat structure. Beijing Agricultural Engineering University, 1989; 9: 13–17. (in Chinese)
[29] Li S Y. Virtual optimization on walking tractor x type seat. Nanning: Guangxi University, 2005. (in Chinese)
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[31] Xu X M, Zhu S H. Research on static and dynamic characteristics simulation of shear seat based on MBS. Mechanical Science and Technology, 2006; 25: 684–686. (in Chinese)
[2] Wang B, Liu F, Li Y W. Development status and development trend of rice harvester in China. Agricultural Mechanization Research, 2013; 10: 226–229. (in Chinese)
[3] Xu L Z, Li Y M, Sun P P, Pang J. Vibration test and analysis of crawler type full feed rice combine harvester. Transactions of the CSAE, 2014; 30(8): 49–54. (in Chinese)
[4] Deng B B. Evaluation method of automotive vibration ride comfort. Hefei: Hefei University of Technology, 2005. (in Chinese)
[5] Huang B, Jiang Z H, Yan J Q. Research on dynamic comfort of automobile seat system. Automotive Science and Technology, 2006; 6: 13–16. (in Chinese)
[6] Pang F b, Meng F C, Fang Y P. Study on vibration isolation system of a 3060 combine engine. Transactions of the CSAM, 2000; 31(6): 72–74. (in Chinese)
[7] Reza E, Mohsen E, Saeed Z. Vibration modeling and modification of cutting platform in a harvest combine by means of operational modal analysis (OMA). Measurement, 2013; 46: 3959–3967.
[8] Takashi F, Eiji I. Vibration characteristics and modeling of knife driving system of combine harvester, part 1: Frequency resolution of time series by wavelet analysis. Journal of the Japanese Society of Agricultural Machinery, 2006; 68: 52–58.
[9] Takashi F, Eiji I. Collision vibration characteristics with interspace in knife driving system of combine harvester. Engineering in Agriculture, Environment and Food, 2012; 5(3): 115–120.
[10] Fukushima T, Inoue E, Mitsuoka M, Okayasu T, Sato K. Collision vibration characteristics with interspace in knife driving system of combine harvester. Engineering in Agriculture, Environment and Food, 2012; 5: 115–120.
[11] Nakata T, Sogabe Y, Araki T. Vibration property of a rubber crawler system when traveling over bumps. Engineering in Agriculture, Environment and Food, 2010; 3: 47–53.
[12] Hostens I, Ramon H. Descriptive analysis of combine cabin vibrations and their effect on the human body. Journal of Sound and Vibration, 2003; 266: 453–464.
[13] De Temmerman J, Deprez K, Hostens I. Conceptual cab suspension system for a self-propelled agricultural machine, part 2: Operator comfort optimization. Biosystems Engineering, 2005; 90: 271–278.
[14] De Temmerman J, Deprez K, Anthonis J, Ramon H. Conceptual cab suspension system for a self-propelled agricultural machine, part 1: Development of a linear mathematical model. Biosystems Engineering, 2004; 89: 409–416.
[15] Deprez K, Moshou D, Ramon H. Comfort improvement of a nonlinear suspension using global optimization and in situ measurements. Journal of Sound and Vibration, 2005; 284: 1003–1014.
[16] Deprez K, Moshou D, Anthonis J, De Baerdemaeker J, Ramon H. Improvement of vibrational comfort on agricultural vehicles by passive and semi-active cabin suspensions. Computers and Electronics in Agriculture, 2005; 49: 431–440.
[17] Blood R P, Ploger J D, Yost M G, Ching R P, Johnson R P. Whole body vibration exposures in metropolitan bus drivers: A comparison of three seats. Journal of Sound and Vibration, 2010; 329: 109–120.
[18] Kabir M S N, Chung S, Kim Y, Shin S. Comparison of test standards for performance and safety of agricultural tractors. Journal of Biosystems Engineering, 2014; 39: 158–165.
[19] Kabir M S N, Ryu M, Chung S, Kim Y, Choi C, Hong S, Sung J. Research trends for performance, safety, and comfort evaluation of agricultural tractors. Journal of Biosystems Engineering, 2014; 39: 21–33.
[20] Wang Y, Li S, Cheng C, Su Y. Adaptive control of a vehicle-seat-human coupled model using quasi-zero-stiffness vibration isolator as seat suspension. Journal of Mechanical Science & Technology, 2018; 32(7): 2973–2985. (in Chinese)
[21] Purnendu M, Arunachalam S. Vibration study in human-car seat system: overview and a novel simulation technique. Journal of Material Sciences & Engineering, 2018; 7: 421.
[22] GB/T 10910. Agricultural wheeled tractor and field operation mechanical driver whole body vibration measurement. Standards Press of China, 2004
[23] GB/T 13876. Agricultural wheeled tractor driver whole body vibration evaluation index. Standards Press of China, 2007
[24] ISO 10326-1. Mechanical vibration - Laboratory method for evaluating vehicle seat vibration. Geneva, Switzerland: ISO. 1992
[25] ISO 2631-1. Mechanical vibration and shock. Geneva, Switzerland: ISO. 1997
[26] GB/T 13441.1. Mechanical vibration and shock-Evaluation of human exposure to whole-body vibration, Part 1: General requirements. Standards Press of China, 2007
[27] Liu Y H. Design and comfort analysis on engineering vehicle seat. Nanchang: China East Jiaotong University, 2013. (in Chinese)
[28] Zou J L, Qian Z J, Zhou Y M. Study on small tractor driving seat structure. Beijing Agricultural Engineering University, 1989; 9: 13–17. (in Chinese)
[29] Li S Y. Virtual optimization on walking tractor x type seat. Nanning: Guangxi University, 2005. (in Chinese)
[30] Xu X M, Zhu S H. A shear type seat vibration theory analysis. Vehicle Application Engineering, 2003; 16: 1659–1663. (in Chinese)
[31] Xu X M, Zhu S H. Research on static and dynamic characteristics simulation of shear seat based on MBS. Mechanical Science and Technology, 2006; 25: 684–686. (in Chinese)
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Published
2019-04-06
How to Cite
Xu, L., Chai, X., Gao, Z., Li, Y., & Wang, Y. (2019). Experimental study on driver seat vibration characteristics of crawler-type combine harvester. International Journal of Agricultural and Biological Engineering, 12(2), 90–97. Retrieved from https://ijabe.migration.pkpps03.publicknowledgeproject.org/index.php/ijabe/article/view/3657
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Power and Machinery Systems
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