数字农科院2.0

Key device design and experimental study of high-speed seedbed preparation for rice paddy sowing

文献类型： 外文期刊

作者： Zheng, Gang;Qi, Bing;Zhang, Wenyi;Yang, Youfu;Liu, Hongjun;Ding, Youqiang;Wang, Yunxia

作者机构：

关键词： Mechanized rice direct seeding;Design;High-speed seeding;EDEM

期刊名称： COMPUTATIONAL PARTICLE MECHANICS

ISSN： 2196-4378

年卷期： 2024 年

页码：

收录情况： SCIE（2024版）

摘要： The mechanized water direct seeding technology of rice has the advantages of saving time and labor, saving cost and increasing yield. The existing wheeled tractor direct seeding operation in paddy field mainly has technical problems such as large wheel rut, floating stubble blockage, and high-speed operation backwater, resulting in the quality of seedbed is not up to standard and cannot meet the requirements of direct seeding operation in paddy field. In view of the above problems, a high-speed rice seedbed preparation machine which can be matched with a wheeled tractor was developed. The overall scheme of the machine was put forward, and the structure design of key devices such as rut coverage, stubble burying and ditching was carried out. The corresponding motion analysis and simulation were carried out. Finally, the bench test and field test were carried out. The test results show that the designed operating machine can complete the rutting coverage, stubble burying, ditching and other operations at one time. The coverage rate of wheel track is 98.52%. The stubble rate was 98.89%; the ditch type of the ditching operation is complete and the ditch is clean. The components of the designed machine meet the design requirements, and the operation effect can better meet the operation requirements of high-speed rice seedbed preparation.

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