联合收获机清选装置试验平台微缩设计
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摘要
本文在分析联合收获机清选装置的基础上,依据相似性原理对联合收获机清选装置试验平台进行微缩设计。对单风道双振动筛结构,选取该结构的清选装置,通过相似原理中的尺寸相似,对其进行微缩设计。根据气流速度与所需风量的关系,给出微缩设计相似比的合理范围,权衡试验平台轻量化和清选量,选定相似比确定清选装置相关几何参数,再利用三维设计软件对微缩清选装置的进行实体造型设计。研究将为联合收获机清选装置微缩试验平台研制提供初步的技术资料。
in the analysis of the cleaning device of the combine harvester, the test platform of the cleaning device of the combine harvester is designed according to the similarity principle. For the single air duct and double vibrating screen structure, the cleaning device of the structure is selected, and the micro-scale design is carried out through the similar size in the similarity principle. According to the relationship between the airflow velocity and the required air volume, the reasonable range of the similarity ratio of the microscale design is given, the lightweight and the cleaning quantity of the test platform are weighed, and the geometric parameters of the cleaning device are determined by selecting the similarity ratio. Then the solid modeling design of the micro-cleaning device is carried out by using three-dimensional design software. The research will provide for the development of microscale test platform for cleaning device of combine harvester. Preliminary technical information.
in the analysis of the cleaning device of the combine harvester, the test platform of the cleaning device of the combine harvester is designed according to the similarity principle. For the single air duct and double vibrating screen structure, the cleaning device of the structure is selected, and the micro-scale design is carried out through the similar size in the similarity principle. According to the relationship between the airflow velocity and the required air volume, the reasonable range of the similarity ratio of the microscale design is given, the lightweight and the cleaning quantity of the test platform are weighed, and the geometric parameters of the cleaning device are determined by selecting the similarity ratio. Then the solid modeling design of the micro-cleaning device is carried out by using three-dimensional design software. The research will provide for the development of microscale test platform for cleaning device of combine harvester. Preliminary technical information.
引文
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[7]林恒善,李耀明.风力因素对风筛式清选效果的影响的试验研究[J].中国农机化,2005(7):62-64.
[2]李桦,尹文庆.风筛式清选装置理论与方法研究[D].南京:南京农业大学,2012.
[3]马晓霞,李耀明,徐立章.联合收割机风筛式清选装置中气流场的仿真研究[J]农机化研究,2007(1):81-82.
[4]李建平,沈永仁,赵匀.物料在抖动输送板上运动的计算机模拟与实验研究[J].农业机械学报,1998,29(3):96-99.
[5]李洪昌.风筛式清选装置理论与试验研究[D].镇江:江苏大学,2011.
[6]王立军,李洋,梁昌,等.贯流风筛清选装置内玉米脱出物运动规律研究[J].农业机械学报,2015,46(9):122-127.
[7]林恒善,李耀明.风力因素对风筛式清选效果的影响的试验研究[J].中国农机化,2005(7):62-64.