Mechanism Analysis of Combine Harvester's Vibration Characteristics under Feeding Interference

被引：0
|
作者：
Ding H. [1 ,2 ]
Chen S. [1 ,2 ]
Zhou W. [1 ,2 ]
Liang R. [1 ,2 ]
机构：
[1] Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, Jiangsu University, Zhenjiang
[2] School of Agricultural Engineering, Jiangsu University, Zhenjiang
来源：
Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery | 2022年 / 53卷
关键词：
combine harvester; excitation frequency; feeding interference; vibration characteristics;
D O I：
10.6041/j.issn.1000-1298.2022.S2.003
中图分类号：
学科分类号：
摘要：
The change of the feeding amount will cause the various working parts to be subjected to variable load impact and unbalanced force, resulting in a sudden change in the vibration of the combine harvester when it is working. Aiming at the stability and reliability of the combine harvester, based on the combine harvester motion balance equation and the correlation analysis method of the external vibration disturbance signal, the vibration acceleration signal of the main working parts under different feeding amounts was obtained by carrying out the variable feeding vibration test of the combine harvester under field conditions. When the fed grains exhibited strong damping characteristics, the vibration acceleration signal was decreased accordingly. However, when the power demand of the harvester was increased, it would further lead to the phenomenon of increased vibration signal. The acceleration signal measured by the test was processed by quadratic integration, and the acceleration signal was converted into a frequency domain signal by fast Fourier transform. The change of amplitude and the characteristics of excitation frequency were obtained. The vibration caused by the disturbance of the feeding amount mainly occurred in the low frequency excitation frequency range, and the damping characteristic of the feeding amount reduced the high frequency amplitude. The feeding amount had the most obvious effect on the vibration of the threshing drum, and the maximum amplitude was attenuated from 17 μm to 2. 8 μm, and the change degree could reach 83.5%. The change degree of header and the conveying trough was 55.8% and 7.69%, respectively. The maximum peak point of the threshing drum also moved left from the mid-frequency near 195 Hz to the low-frequency near 117 Hz. © 2022 Chinese Society of Agricultural Machinery. All rights reserved.
引用
收藏
页码：20 / 27and51
页数：2731
相关论文
共 18 条
  • [1] JIN Chengqian, CAI Zeyu, YANG Tengxiang, Et al., Design and experiment of yield monitoring system of grain combine harvester [J], Transactions of the Chinese Society for Agricultural Machinery, 53, 5, pp. 125-135, (2022)
  • [2] LI Qinglin, SONG Yuying, YAO Chengjian, Et al., Intelligent design and optimization system for cleaning device of rice and wheat combine harvester[J], Transactions of the Chinese Society for Agricultural Machinery, 52, 5, pp. 92-101, (2021)
  • [3] XU Lizhang, LI Yang, LI Yaoming, Et al., Research progress on cleaning technology and device of grain combine harvester [J], Transactions of the Chinese Society for Agricultural Machinery, 50, 10, pp. 1-16, (2019)
  • [4] LIU Hongxin, LI Jinlong, GUO Lifeng, Et al., Knowledge organization and knowledge base system of combine harvester [J], Transactions of the Chinese Society for Agricultural Machinery, 52, 2, pp. 381-393, (2021)
  • [5] NI Xindong, CHEN Du, WANG Shumao, Et al., End-of-line inspection system of combine harvester manufacturing quality based on digital workshop, Transactions of the Chinese Society for Agricultural Machinery, 51, 12, pp. 166-174, (2020)
  • [6] CHEN S R, ZHOU Y P, TANG Z, Et al., Modal vibration response of rice combine harvester frame under multi-source excitation, Biosystems Engineering, 194, pp. 177-195, (2020)
  • [7] SUN Yifan, LIU Renjie, OU Hao, Et al., Analysis and comparison of feed rate detection methods of combine harvester based on power detection [J], Transactions of the Chinese Society for Agricultural Machinery, 51, 5, pp. 118-123, (2020)
  • [8] TANG Z, ZHANG B, WANG M, Et al., Damping behaviour of a prestressed composite beam designed for the thresher of a combine harvester, Biosystems Engineering, 204, 4-5, pp. 130-146, (2021)
  • [9] JI Jiangtao, XU Longjiao, PANG Jing, Et al., Analysis of minimum amplitude points and optimization of connection position for header of micro grain combine [J], Transactions of the CSAE, 33, 12, pp. 28-33, (2017)
  • [10] CHEN Shuren, HAN Hongyang, LU Qiang, Modal analysis of header for type 4LZ - 2. 0 combine harvester[J], Transactions of the Chinese Society for Agricultural Machinery, 43, pp. 90-94, (2012)
12