谷物联合收获机清选技术与装置研究进展  

Research Progress on Cleaning Technology and Device of Grain Combine Harvester

作　　者：徐立章[1] 李洋[1] 李耀明[1] 柴晓玉 仇解 XU Lizhang;LI Yang;LI Yaoming;CHAI Xiaoyu;QIU Jie(School of Agricultural Equipment Engineering, Jiangsu University, Zhenjiang 212013, China)

机构地区：[1]江苏大学农业装备工程学院,镇江212013

出　　处：《农业机械学报》2019年第10期1-16,共16页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金项目(51875260).

摘　　要：我国谷物联合收获机普遍存在作业性能和效率难以兼顾、适应性不强、信息化智能化程度较低等问题,清选装置作为联合收获机最核心的工作部件之一,直接影响着整机的作业性能。如何提高清选装置的性能和效率是现阶段谷物联合收获机技术发展的重点和难点。因此,本文从清选装置结构、清选装置内部气流场和物料运动及清选装置智能化技术等方面综述了国内外谷物联合收获机清选技术与装置的研究进展,分析阐述了联合收获机清选装置的发展趋势,以期进一步提高我国联合收获机清选装置的工作性能、作业效率和适应性。The grain combine harvesters of China generally exist problems such as low reliability, low adaptability, and low intelligence and informationize. The cleaning device is one of the core working components of the combine harvester, and its performance is an important factor that directly affects the performance of the whole machine. How to improve the performance and efficiency of the cleaning device is the difficulty and focus of the development of grain combine harvester at this stage. To this end, the research status of domestic and foreign combine harvesting technology and equipment was reviewed from the aspects of cleaning device structure, airflow field and material movement in the cleaning device and intelligent cleaning device. At present, in the basic structure of the combine harvester cleaning device, research was mostly concentrated on multi-fan, multi-layer vibrating screens, shaking plates, etc. In the aspect of the cleaning device fan structure, the fan performance, efficiency, and airflow uniformity of the air outlet were optimized by optimizing the fan volute, impeller, and multi-duct structure. In the aspect of cleaning sieve, the sieve surface structure and motion form of the vibrating screen were studied. In the research of the airflow field, a more complete simulation model can be established, and a more accurate airflow field measuring instrument can be established, so that the internal airflow field distributions of the simulation and experiment for cleaning device were closer to that of the real situation. In the research of material movement, the EDEM software was usually used to simulate the movement of material particles on vibration, which can reflect the movement law of materials to a certain extent, but still cannot reflect the internal material movement of the actual cleaning device. Most of the existing gas-solid two-phase flow in the cleaning device adopted the CFD DEM software coupling method, but they all simplified the model as much as possible, which caused the numerical simulat

关 键 词：联合收获机 清选装置 研究进展 

分 类 号：S225[农业科学—农业机械化工程]