10.24423/EngTrans.3316.2024
Design of a Non-Circular Gear-Crank Slider Baler Mechanism Considering Slider Acceleration
A design method considering slider acceleration is proposed to reduce vibration and improve the working efficiency of a non-circular gear-crank slider baler mechanism. The ideal kinematic curves such as the displacement, velocity and acceleration curves of this proposed non-circular gear-crank slider hay baler mechanism are established. The slider strokes are divided into the working stroke and return stroke. The pitch curve of the non-circular gear is established during the slider’s working stroke based on curve smoothness characteristics and the pitch curve sealing condition. Using a compensation method, the corresponding pitch curve is constructed for the slider’s return stroke. Additionally, the design process of non-circular gear-crank slider hay baler mechanism is described in detail with special consideration given to slider acceleration. An assembly model of the non-circular gear-crank slider hay baler mechanism is created with the involute as the tooth profile. Consequently, a movement simulation is carried out using ADAMS software, and the obtained kinematic curves matched the curves established initially. The research results indicate that the proposed baler mechanism exhibits lower speed fluctuation. Additionally, the maximum power and maximum acceleration required by the proposed baler mechanism are reduced by 66.4% and by an order of magnitude, respectively, compared to an existing non-circular gear-crank slider hay baler mechanism.
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References
Li D.B., The parameter optimization and virtual experiment and test of hay baler compression mechanism [in Chinese], Doctoral Thesis, Zhejiang: Zhejiang Sci-Tech University, 2011.
Zhou G.D., Du J.M., She W.L., Zhao D.Y., Hao F., Experimental study on stress relaxation of forage in compression process and mechanics research of compression piston [in Chinese], Journal of Agricultural Mechanization Research, 39(4): 197–201, 2017.
Bortolini M., Cascini, A., Gamberi M., Mora C., Regattieri A., Sustainable design and life cycle assessment of an innovative multi-functional haymaking agricultural machinery, Journal of Cleaner Production, 82(3): 23–36, 2014, doi: 10.1016/j.jclepro.2014.06.054.
Lei C.Y., Chen J..N, Li P.P., Wang Y., Reverse design of non-circular gear-crank slider hay baler mechanism [in Chinese], Transactions of the Chinese Society of Agricultural Engineering, 28(13): 22–27, 2012.
Teffera A., Tekeste S., Denekew Y., On-farm evaluation and demonstration of different types of hay press, Livestock Research for Rural Development, 24(1): 11–13, 2012, http://www.lrrd.org/lrrd24/1/teff24001.htm.
Coblentz W.K., Fritz J.O., Bolsen K.K., Baling system for making laboratory-scale hay bales, Agronomy Journal, 85(4): 962–965, 1993, doi: 10.2134/agronj1993.00021962008500040032x.
Wang C.G., Tan L.D., Study on a virtual prototype based hay highly compressing process [in Chinese], Transactions of the Chinese Society for Agricultural Machinery, 36(3): 99–101, 2005.
Zhao H.G., Simulation research on dynamic characteristic of hay baler [in Chinese], Doctoral Thesis, Harbin: Northeast Forestry University, 2007.
Li D.B., Jiang P.P., Luo H., Zhao Y., The optimization and simulation of the six-shaft hay baler’s parameters [in Chinese], Journal of Zhejiang Sci-Tech University, 29(3): 208–213, 2012.
Chen P.Y., Wu P., Ma Y.H., Wang H.Y., Xue D.M., Design of cam-type hay balers based on hay compression characteristics [in Chinese], Journal of Agricultural Mechanization Research, 41(8): 88–93,102, 2019．
Dawei L., Tingzhi R., Study on deformed limacon gear and motion optimization of its serial mechanism, Journal of Mechanical Design, Transaction of ASME, 133(6): 061004-1–8, 2011, doi: 10.1115/1.4004116.
Medvecká-Beňová S., Designing pitch curves of non-circular gears, Scientific Journal of Silesian University of Technology. Series Transport (Zeszyty Naukowe Politechniki Śląskiej. Seria Transport), 99: 105–114, 2018, doi: 10.20858/sjsutst.2018.99.10.
Vasie M., Andrei L., Design and generation of noncircular gears with convex-concave pitch curves, Annals of ”Dunarea de Jos” University of Galati, Fascicle V, Technologies in Machine Building, 30(2): 55–60, 2012, https://www.gup.ugal.ro/ugaljournals/index.php/tmb/article/view/1728.
Ottaviano E., Mundo D., Danieli G.A., Ceccarelli M., Numerical and experimental analysis of non-circular gears and cam-follower systems as function generators, Mechanism and Machine Theory, 43(8): 996–1008, 2008, doi: 10.1016/j.mechmachtheory.2007.07.004.
Guo C.Z., Fu W., Zhu J.C., Zhao C.G., Design of the pitch curves of non-circular gear for quick return mechanism [in Chinese], Chinese Journal of Mechanical Engineering, 141(11): 221–227, 2005.
Niu S.C., Li G., Li G.Y., Huang J.J., The design of new transmission in automatic fixation-shaping machine [in Chinese], Journal of Agricultural Mechanization Research, 33(2): 58–61, 2011.
Hu Z.Y., Yang H., Li D.Z., Han J., Optimization design and experimental analysis of non-circular gears for constant flow pumps [in Chinese], China Mechanical Engineering, 27(22): 3082–3087, 2016.
Chen X.B., Iwatsuki N., Hayashi I., Morikawa K.,.Synthesis of function generators composed of non-circular gear-linkage based on L'Hospital's theorem [in Chinese], Journal of Tongji University, 20(9): 1091–1094, 2002.
Langer T.H., Ebbesen M.K., Kordestani A., Experimental analysis of occupational whole-body vibration exposure of agricultural tractor with large square baler, International Journal of Industrial Ergonomics, 47(2): 79–83, 2015, doi: 10.1016/j.ergon.2015.02.009.
Song D., Wang G., Xue Z., Zhang J., Huang Z., Yang Z., Design and analysis on compression mechanism of small square bales of sugarcane leaf Baler, Agricultural Science & Technology, 15(10): 1812–1815, 2014.
Yang M.S., Li X.Y., An analysis of open compression procedure of herbage material [in Chinese], Journal of Agricultural Mechanization Research, 27(3): 81–86, 2005.
Litvin F.L., Gonzalez-Perez I., Fuentes A., Hayasaka K., Design and investigation of gear drives with non-circular gears applied for speed variation and generation of functions, Computer Methods in Applied Mechanics & Engineering, 197(45–48): 3783–3802, 2008, doi: 10.1016/j.cma.2008.03.001.
Liu D.W., Ren T.Z., Creating pitch curve of closed non-circular gear by compensation method [in Chinese], Chinese Journal of Mechanical Engineering, 47(13): 147–152, 2011.
Litvin F.L., Fuentes A., Gear Geometry and Applied Theory, 2nd ed., Cambridge University Press, 2004.
Yang M.S., Wang C.G., The analysis on essential problems in hay compressing engineering [in Chinese], Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 13(5): 134–138, 1997.
DOI: 10.24423/EngTrans.3316.2024