Analysis and performance test on dynamic seed corn threshing and conveying process with variable diameter and spacing
Keywords:
seed corn, threshing device with variable diameter and spacing, threshing and conveying process, performance testAbstract
In order to further reduce the damage rate in threshing seed corn, a seed corn threshing testbed with variable diameter and spacing that can realize dynamic adjustment of parameters, such as feed quantity, rotating speed of the threshing device, threshing spacing of the threshing units, was designed in this research. The software of finite element analysis ANSYS Workbench was applied to do modal analysis on the threshing axis designed for variable diameter and spacing of seed corn. The first 8 orders of natural frequencies were distributed in 201.12-1640.20 Hz, with corresponding vibration amplitude in 5.86-27.04 mm, showing reasonable structural design of the threshing axis, which could realize effective seed corn threshing and conveying. Discrete element method was applied to do simulation analysis on the seed corn threshing and conveying process with variable diameter and spacing. Under the condition of different feed quantity, different rotating speed of the thresher, the moving speed of corn clusters and contact force among clusters were measured through simulation, and the working characteristics of the threshing testbed for low-damage and dynamic threshing and conveying of seed corn with variable diameter and spacing were revealed. Working performance test results of the testbed of seed corn with variable diameter and spacing showed that, when the rotating speed of the threshing axis was 190-290 r/min, feed quantity was 1.80-3.80 kg/s, the damage rate of seed corn was 0.32%-0.63%, threshing rate was 99.20%-99.82%, and content impurity rate was 4.23%-5.86%, the mass of threshed corn grains first increased and then decreased along the axial direction. The test verification process was in line with the simulation results; thus, the test results could satisfy the requirements in design and actual operation. Keywords: seed corn; threshing device with variable diameter and spacing; threshing and conveying process; performance test DOI: 10.25165/j.ijabe.20231602.7741 Citation: Dai F, Zhao Y M, Liu Y X, Shi R J, Xin S L, Fu Q F, Zhao W Y. Analysis and performance test on dynamic seed corn threshing and conveying process with variable diameter and spacing. Int J Agric & Biol Eng, 2023; 16(2): 259–266.References
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[26] Qu Z, Zhang D X,Yang L, Zhang T L,Wang Z D, Cui T. Experiment on feed rate and cylinder speed of longitudinal axial flow threshing and separating device for maize. Transactions of the CSAM, 2018; 49(2): 58–65. (in Chinese)
[2] Li X P, Ma Y D, Jin X, Gao L X. Design and test of corn seed bionic thresher. Transactions of the CSAM, 2015; 46(7): 97–101. (in Chinese)
[3] Dai F, Zhang F W, Zhao W Y, Wang G W. Mechanics characteristic experimental study of seed corn cob. Journal of Chinese Agricultural Mechanization, 2017; 38(5): 1–5. (in Chinese)
[4] Gu R L, Huang R, Jia G Y, Yuan Z P, Ren L S, Li L, Wang J H. Effect of mechanical threshing on damage and vigor of maize seed threshed at different moisture contents. Journal of Integrative Agriculture, 2019; 18(7): 1571–1578.
[5] He X P, Liu C H, Shi J F, Wang G W. Research and design on corn sheller by extruding and rubbing method. Transactions of the CSAE, 2003; 19(2): 105–108. (in Chinese)
[6] Yu L J. Reseach on the effect of the relationship between corn thresher's spiral angle and threshing characteristic. Journal of Agricultural Mechanization Research, 2003; 19(2): 62–64, 69. (in Chinese)
[7] Li X P, Ma L, Geng L X, Wang S S, Pang J, Ji J T. Performance test and parameter optimization of corn seed bionic thresher. Transactions of the CSAE, 2017; 33(5): 62–69. (in Chinese)
[8] Cui T, Fan C L, Zhang D X,Yang L, Li Y B, Zhao H H. Research progress of maize mechanized harvesting technology. Transactions of the CSAM, 2019; 50(12): 1–13. (in Chinese)
[9] Yu Y J, Fu H, Y J Q. DEM-based simulation of the corn threshing process. Advanced Powder Technology, 2015; 26(5): 1400–1409.
[10] Zhou L, Y J Q, Wang Y, Yan D X, Yu Y J. A study on the modelling method of maize-seed particles based on the discrete element method. Powder Technology, 2020; 374: 353–376.
[11] Zhao W Y, Guo K Q. Parameters optimization of combined spiral bar tooth thresher for maize seed. Transactions of the CSAM, 2012; 43(12): 56–61. (in Chinese)
[12] Zhao W Y, Dai F, Zhang F W, Wang G W. Performance test of the type of 5TYJ-10A corn seed thresher. Research of Agricultural Modernization, 2017; 38(5): 907–913. (in Chinese)
[13] Liu Y X, Zhao W Y, Dai F, Shi R J, Zhang S L, Fu Q F. Optionmization of the working parameters and performance experiment of diameter changes and varied-line-spacing seed corn threshing model machine. Journal of Chinese Agricultural Mechanization, 2020; 41(11): 66–74. (in Chinese)
[14] Zhang Z H, Tong J, Chen D H, Sun J Y, Ma Y H. Modal analysis of bionic convex teeth rolling component composed of different materials. Transactions of the CSAE, 2012; 28(13): 8–15. (in Chinese)
[15] Wang Y X, Liang Z J, Zhang D X, Cui T, Shi S, Li K H, et al. Calibration method of contact characteristic parameters for corn seeds based on EDEM. Transactions of the CSAE, 2016; 32(22): 36–42. (in Chinese)
[16] Martina C L, Bouvarda D, Shimab S. Study of particle rearrangement during powder compaction by the Discrete Element Method. Journal of the Mechanics and Physics of Solids, 2003; 51(4):667–693.
[17] Tang H, Xu C S, Xin Q, Wang Z M, Wang J F, Zhou W Q, et al. Study on periodic pulsation characteristics of corn grain in a grain cylinder during the unloading stage. Foods, 2021; 10(10): 2314. doi: 10.3390/foods10102314.
[18] Tang H, Xu C S, Xu W L, Xu Y A, Xiang Y S, Wang J W. Method of straw ditchburied returning, development of supporting machine and analysis of influencing factors. Frontiers in Plant Science, 2022; 13: 967838. doi: 10.3389/fpls.2022.967838.
[19] Tang H, Xu C S, Wang Z M, Wang Q, Wang J W. Optimized design, monitoring system development and experiment for a long-belt finger-clip precision corn seed metering device. Frontiers in Plant Science, 2022; 13: 814747. doi: 10.3389/fpls.2022.814747.
[20] Dai F, Song X F, Zhao W Y, Han Z S, Zhang F W, Zhang S L. Motion simulation and test on threshed grains in tapered threshing and transmission device for plot wheat breeding based on CFD-DEM. Int J Agric & Biol Eng, 2019; 12(1): 66–73.
[21] Dai F, Song X F, Guo W J, Zhao W Y, Zhang F W, Zhang S L. Simulation and test on separating cleaning process of flax threshing material based on gas-solid coupling theory. Int J Agric & Biol Eng, 2020; 13(1): 73–81.
[22] Li H C, Li Y M, Gao F, Zhao Z, Xu Li Z. CFD-DEM simulation of material motion in air-and-screen cleaning device. Computers and Electronics in Agriculture, 2012; 88(6): 111–119.
[23] Oldal I, Safranyik F. Extension of silo discharge model based on discrete element method. Journal of Mechanical Science & Technology, 2015; 29(9): 3789–3796.
[24] Yang Y F, Zhang Y L, Zhang B H, Tong L, Gao L X. Experimental study on static pressing typical corn seed kernel. Journal of Agricultural Mechanization Research, 2008; 24(7): 149–151. (in Chinese)
[25] Li X P, Gao L X, Ma F L. Analysis of finite element method on mechanical properties of corn seed. Transactions of the CSAM, 2007; 38(10): 64–67, 72. (in Chinese)
[26] Qu Z, Zhang D X,Yang L, Zhang T L,Wang Z D, Cui T. Experiment on feed rate and cylinder speed of longitudinal axial flow threshing and separating device for maize. Transactions of the CSAM, 2018; 49(2): 58–65. (in Chinese)
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Published
2023-05-12
How to Cite
Dai, F., Zhao, Y., Liu, Y., Shi, R., Xin, S., Fu, Q., & Zhao, W. (2023). Analysis and performance test on dynamic seed corn threshing and conveying process with variable diameter and spacing. International Journal of Agricultural and Biological Engineering, 16(2), 259–266. Retrieved from https://ijabe.migration.pkpps03.publicknowledgeproject.org/index.php/ijabe/article/view/7741
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Agro-product and Food Processing Systems
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