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Optimization design and experiment on feeding and chopping device of silage maize harvester

International Journal of Agricultural and Biological Engineering 2023年第3期16卷 64-77页

作者： Meizhou Chen Guangfei Xu Maojian Wei Xiaowei Li Yuanzhen Wei Peisong Diao Peide Cui Shaomin Teng College of Agricultural Engineering and Food Science Shandong University of TechnologyZibo 255000ShandongChina School of Mechanical and Automotive Engineering Liaocheng UniversityLiaocheng 252000ShandongChina Shandong Academy of Agricultural Machinery Sciences Jinan 250000China Menoble Co. Ltd.Beijing 100010China

Horizontal feeding devices and plate hob chopping devices are the key component of silage maize *** solve the problem of feeding blockage,reduce energy consumption,and improve the chopping quality of the chopping device a horizontal different diameter five-rollers device(HDDFD)was designed and the plate hob chopping device was simultaneously optimized and *** the dynamic analysis,the feeding conveying speed was determined to be 2.0-4.5 m/*** distance equation of the actual and theoretical cutting-edge curve and the position of the fixed blade were finally *** factor and response surface orthogonal tests in the bench site were carried out with feeding speed,rotating speed of chopping cylinder,feeding amount,and feeding direction as influencing factors,standard grass length rate(SGLR),and energy consumption per unit mass(ECPUM)as evaluation *** optimal working parameters for chopping performance could be concluded as a feeding speed of 3.39 m/s,rotating speed of the chopping cylinder of 1016.17 r/min,feeding amount of 8.04 kg/s,and feeding direction of 52.2°.In addition,the SGLR and ECPUM were obtained as 95.35%and 37.63 kJ/kg,*** relative error between the experimental results with round parameter combination and the predicted value was verified to be less than 5%.Field tests verified the reliability of the optimized feeding and chopping *** can be seen that the HDDFD and optimized plate hob chopping device can meet the requirements of mechanized silage harvesting which obviously improves the working quality and reduce the energy consumption of chopping.

关键词： silage maize feeding device chopping device stand grass length ratio energy consumption

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Design and parameter optimization of spiral-dragon type straw chopping test rig

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International Journal of Agricultural and Biological Engineering 2020年第1期13卷 47-56页

作者： Pengbo Ma Liqiao Li Baoqin Wen Yunheng Xue Za Kan Jingbin Li College of Mechanical Electrical Engineering Shihezi UniversityShihezi 832000China Key Laboratory of Northwest Agricultural equipment Ministry of Agriculture and Rural AffairsShihezi 832000China

In order to address the problems of large chop length,high energy consumption and poor chopping effect that were associated with a horizontal total mixed rations(TMR)mixer,a straw chopping device was designed;further,its structure and working principle were *** this study,wheat straw was chosen as the test *** number of processing times,number of fixed blades,cutting speed,number of tooth plates and the inclined angle of the box were considered as the test *** standard straw length rate and average power were used as evaluation indices for conducting the orthogonal rotation combination experiment with five factors and five levels of quadratic *** experimental results denoted that the order of influencing factors on the standard straw length rate can be given as follows:the number of processing times,number of fixed blades,cutting speed,number of tooth plates and inclined angle of the *** order of the influence of each factor on the average power can be given as follows:the cutting speed,number of fixed blades and number of tooth ***,the optimum structural and working parameters of the device can be determined as follows:linear cutting speed of 17-20 m/min,box inclined angle of 70°-80°,20-23 fixed blades,5-6 processing times and 4-7 tooth *** such a circumstance,the standard straw length rate reached up to 70.5%-77.4%and the average power was low at 5.8-7 *** results can be used as reference for designing a chopping device for a TMR mixer.

关键词： total mixed rations straw chopping device parameter optimization

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