Effects of Unbalanced Incentives on Threshing Drum Stability during Rice Threshing

被引:7
作者
Que, Kexin [1 ]
Tang, Zhong [1 ,2 ]
Wang, Ting [3 ]
Su, Zhan [4 ]
Ding, Zhao [4 ]
机构
[1] Jiangsu Univ, Sch Agr Engn, Zhenjiang 212013, Peoples R China
[2] Key Lab Intelligent Equipment & Robot Agr Zhejiang, Hangzhou 310058, Peoples R China
[3] Jiangsu World Agr Machinery Co Ltd WORLD AM, Zhenjiang 212311, Peoples R China
[4] Key Lab Crop Harvesting Equipment Technol Zhejiang, Jinhua 321017, Peoples R China
来源
AGRICULTURE-BASEL | 2024年 / 14卷 / 05期
基金
中国国家自然科学基金;
关键词
threshing cylinder; axis locus; amplitude; counterweight block; unbalanced excitation;
D O I
10.3390/agriculture14050777
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
As a result of the uneven growth of rice, unbalanced vibration of threshing drum caused by stalk entanglement in combine harvester is more and more severe. In order to reveal the influence of unbalanced excitation on the roller axis locus during rice threshing, the stability of threshing drum was studied. The dynamic signal test and analysis system are used to test the axial trajectory of threshing drum. At the same time, the influence of the unbalanced excitation caused by the axis winding on the axis trajectory is analyzed by the experimental results. Axis locus rules under no-load and threshing conditions are obtained. In order to simulate the axial and radial distribution of unbalanced excitation along the threshing drum, the counterweight was distributed on the threshing drum instead of the entangled stalk. Then, the definite effect of unbalanced excitation on the rotating stability of threshing drum is analyzed. Results show that the amplitude of stem winding along the grain drum is larger in the vertical direction and smaller in the horizontal direction when compared with the unloaded state under 200 g weight. It was found that the amplitude in both horizontal and vertical directions decreased after 400 g and 600 g counterweights were added, respectively, to simulate the radial distribution of stalk winding along the grain barrel. Finally, it can be seen that with the increase in the weight of the counterweight, the characteristics of the trajectory misalignment of the threshing cylinder axis become more and more obvious. This study can provide reference for reducing the unbalanced excitation signal of threshing drum and improving driving comfort.
引用
收藏
页数:17
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