双质料给料机动力有限元约束模态分析
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中国科技论文在线
双质料给料机动力有限元约束模态分析
张岚峰
1
，黄桂
2*
作者简介：张岚峰（1984），男，硕士研究生，机械设计及理论. E-mail: zhanglf1984@hotmail.com
（1. 中国矿业大学机电学院，徐州 221116；
2. 郑州煤炭机械厂，郑州 450013）
摘要：观察双质体给料机的振动特性，探讨约束模态对给料机槽体的分析。简化并建立双质
体给料机有限元模型，而后进行 9 阶约束模态分析。从频率上来看，前 4 阶模态频率相互间
间隔较小，外部激励的频率可能同时与几阶频率接近，双质体给料机容易发生振动的叠加;
双质体给料机的额定工作频率为 16.25Hz，与第五阶固有频率 19.153Hz 的比值为 0.848，在
0.75～1.3 的范围之内，在近共振的状态下工作，与动力学参数计算中选取的主振系统的频
率比 相符合；从前九阶振型来看，当固有频率为 10.062Hz、22.467Hz 时，给料槽体和电机
座才出现明显变形。通过对给料机约束模态分析研究，表明双质体给料机能够成功地克服共
振，实现平稳地起动和正常工作。
关键词： 关双质体惯性振动给料机；动态特性；模态分析；
中图分类号：TH113.1
Dynamic Finite Element Analysis of Constrained Model for
Feeder Trough
ZHANG Lanfeng
1
, HUANG Gui
2
(1. Mechatronic Engineering School, China University of Mining and Technology,Xuzhou 221116;
2. Mining and Mechanical Factory of Zheng zhou, Zhengzhou 450013)
Abstract: In this paper to investigate Two-mass inertial vibratory feeder under vibration condition
analyzed by the influence of constrained modal for feeder trough. To simplify and establish finite
element analysis modal of feeder trough, and then analysis nine orders vibration constrained modal of
two-mass Feeder.The frequency gap between the first four orders vibration is small. External excitation
frequency may approach to several frequencies, so that two-mass feeder maybe prone to vibration of
superposition. The ratio of 16.25Hz which is the rated frequency of two-mass feeder to five order
natural frequency 19.153Hz is 0.848 ,which in 0.75 ~ 1.3 range. Under working similarly the resonance
condition, this figure is coincide with which is the calculation of kinetic parameters of the vibration
system frequency. Merely mode of vibration, when input frequency is 10.062Hz and 22.467Hz, feeder
trough and motor cabinet occur obviously deformation. Through the constrained modal experiment
study on feeding trough, it indicates that two-mass feeder trough can successfully overcome the
resonance and may bring out steady starting and work.
Key words: two-mass inertial vibratory feeder; dynamic characteristic; modal analysis;
0 引言
振动给料机是自动加工与自动装配系统中的一种供料装置，它广泛应用在冶
金、煤炭、电力、化工、建材、轻工和粮食等工矿企业中，与其他设备配套实现
给料、喂料、配料、定量包装和流程自动化工作。在冶金矿山，主要用在溜井放
矿、转载装车、选矿破碎给料作业；在煤矿，主要用在井下转载、箕斗下转载、
原煤仓下配煤、精煤仓下装车和洗选机均匀给料等作业；在电力行业，主要配置
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