摘要
插瓜转位装置是籽瓜挖瓤机的重要组成部分,而槽轮机构又是该装置的核心,对整机的正常工作和作业质量起着至关重要的作用。基于自主研发的籽瓜挖瓤机,利用ANSYS软件对槽轮机构进行了有限元模态分析,结果表明:随着阶数的增加,槽轮机构的振型变化趋势为由槽轮机构左右部分的前后摆动转变为槽轮机构整体的扭转摆动和弯曲摆动,固有频率先缓缓增加,随后逐渐趋于平稳,最后快速上升,其所对应的最大振幅先上升再缓慢降低,变化趋势近似为二次多项式分布;由于前6阶固有频率相对较大,故不会引起不必要的共振。该结论可为籽瓜挖瓤机的结构优化和改进提供理论依据。
The melon inserting indexing device is an important part of the seed melon digging machine,and the grooved wheel mechanism is the core of the device,which plays a vital role in the normal operation and quality of the whole machine.Based on the self-developed seed melon digging machine,the ANSYS software is used in this paper to carry out the finite element modal analysis of the sheave mechanism.The results show that with the increase of the order,the mode change trend of the vibration shape of the sheave mechanism is changed from the front and back swing of the left and right parts of the sheave mechanism to the torsional swing and bending swing of the whole slot sheave mechanism.The natural frequency first slowly increases,then gradually stabilizes,and finally rises quickly.The corresponding maximum amplitude first rises and then slowly decreases.The change trend is approximately quadratic polynomial distribution.Because the first 6-order natural frequency is relatively large,it will not cause unnecessary resonance.This conclusion can provide a theoretical basis for the structural optimization and improvement of the seed melon flesh digging machine.
作者
丁赛飞
熊世磊
王启慧
许家源
黄晓鹏
DING Sai-fei;XIONG Shi-lei;WANG Qi-hui;XU Jia-yuan;HUANG Xiao-peng(College of Mechanical and Electrical Engineering,Gansu Agricultural University,Lanzhou Gansu 730070,China;College of Food Science and Engineering,Gansu Agricultural University,Lanzhou Gansu 730070,China)
出处
《机械研究与应用》
2020年第4期74-76,共3页
Mechanical Research & Application
基金
甘肃农业大学SRTP项目:不同机械损伤下籽瓜生物特性研究(编号:202006065)。
关键词
籽瓜挖瓤机
槽轮机构
有限元
模态分析
seed melon flesh digging machine
grooved wheel mechanism
finite element
modal analysis
