• CN:11-2187/TH
  • ISSN:0577-6686

›› 2012, Vol. 48 ›› Issue (1): 104-110.

• 论文 • 上一篇    下一篇

非谐和水平振动输送机的物料运动分析

郭宝良;段志善;郑建校;何育民   

  1. 西安建筑科技大学机电学院
  • 发布日期:2012-01-05

Analysis of Material Movement of Non-harmonic Horizontally Vibrated Conveyer

GUO Baoliang;DUAN Zhishan;ZHENG Jianxiao;HE Yumin   

  1. Mechanical and Electrical College, Xi’an University of Architecture & Technology
  • Published:2012-01-05

摘要: 针对物料滑移理论中干摩擦驱动下物料输送速度计算困难的问题,通过分析基于物料滑移理论的非谐和水平振动输送机(以下简称输送机)物料运动过程,在分段建立并求解输送机和物料的动力学微分方程的基础上,改进干摩擦作用下物料相对于输送机的运动状态的判别条件及各状态之间的相互转变的判别条件,并进行基于Matlab数值仿真研究和试验研究。研究结果表明,由输送机速度或加速度的不对称使驱动物料运动的干摩擦力也不对称,从而使物料的运动也不对称,引起物料与输送机之间的相对运动;输送机两偏心质量的相位差为90°或270°、频率比为2时对物料输送最为有利;物料输送速度随着输送机低频轴频率的增加而增加,随着两偏心质量矩的增加而增加,但增加到一定程度时物料输送速度就不再增加;当两偏心质量矩之一确定时,二者之比存在最佳值使得物料输送速度达到最佳值。

关键词: 非谐和水平振动输送机, 干摩擦, 偏心质量矩, 频率比, 物料输送速度

Abstract: Aiming at the calculation difficulty problem of the material transportation speed under the dry friction drive in the material slippage theory, and through analyzing the material movement process of the non-harmonic horizontally vibrated conveyer (here in after referred to as the conveyer)based on the material slippage theory, the discriminate condition of the motion state of the material relative to the conveyer under the dry friction and the transformational discriminate condition among each state are improved on the basis of sectionally establishing and solving the dynamic differential equation of the conveyer and the material, and then the numerical simulation and the experimental research are finished based on the Matlab software. The result shows that the dissymmetry of the conveyer speed or the acceleration makes the dry friction force that is driving the material movement asymmetric, the dissymmetry of the trough speed or acceleration makes the coulomb friction that is driving the material movement, which will make the material movement asymmetric and give rise to the relative motion between the material and the conveyor. When the phase difference of the conveyer two eccentric masses is 90° or 270° and the frequency ratio is 2, it is very advantageous to transport materials. The materials transportation speed will increase with the frequency increase of the conveyer low-frequency shaft and along with the two eccentric mass moments’ increase, but the materials transportation speed will not increase when they increased to a certain degree. When one of the two eccentric mass moments is determined, the material transportation speed will achieve the best value if the ratio exists the best value.

Key words: Dry friction, Eccentric mass moment, Frequency ratio, Material transportation speed, Non-harmonic horizontally vibrated conveyer

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