• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2020, Vol. 56 ›› Issue (1): 37-46.doi: 10.3901/JME.2020.01.037

• 机械动力学 • 上一篇    下一篇

基于多体动力学特性的输送带跑偏研究

尹兆明, 樊智敏   

  1. 青岛科技大学机电工程学院 青岛 266061
  • 收稿日期:2019-02-25 修回日期:2019-08-08 出版日期:2020-01-05 发布日期:2020-03-09
  • 通讯作者: 樊智敏(通信作者),男,1963年出生,博士,教授,博士研究生导师。主要研究方向为机械传动设计理论与方法、机械系统动力学等。E-mail:zmfan@163.com
  • 作者简介:尹兆明,男,1989年出生,博士研究生。主要研究方向为机械传动设计理论与方法。E-mail:792869168@qq.com
  • 基金资助:
    山东省重点研发计划(2019GGX104088)和山东省自然科学基金(ZR 2018MEE014)资助项目。

Study on Deviation of Conveyor Belt Based on Multi-body Dynamics Characteristics

YIN Zhaoming, FAN Zhimin   

  1. College of Electromechanical Engineering, Qingdao University of Science&Technology, Qingdao 266061
  • Received:2019-02-25 Revised:2019-08-08 Online:2020-01-05 Published:2020-03-09

摘要: 输送带跑偏是带式输送机运行过程中最常见的故障。为研究输送带跑偏运动规律及各种因素对其产生的影响,提出基于多体动力学方法,对带传动系统进行离散处理,根据输送带与滚筒间的刚柔多体耦合接触,建立其多体非线性接触动力学模型,研究滚筒平行度、输送带黏弹性特性、运行状态以及输送带与滚筒间压陷深度等对输送带偏移量的影响,并在此基础上研究输送带跑偏对主动滚筒可靠性的影响。研究结果表明:输送带跑偏不仅与受力有关,还与其材料黏弹性特性引起的弹性变形有关;滚筒平行度公差与输送带偏移量呈单调递增关系;输送带黏弹性特性决定其与滚筒间的压陷深度,且输送带偏移量随着压陷深度的增大而增大;输送带运行速度越高、输送距离越长,输送带偏移量越大;输送带跑偏将导致主动滚筒应力、应变及其分布发生变化,降低其使用寿命。

关键词: 输送带, 跑偏, 多体动力学, 离散, 黏弹性

Abstract: Deviation of conveyor belt is the most common fault during the operation of belt conveyor. In order to study the movement regularity of the conveyor belt and the influence of various factors on it, a multi-body dynamics method is proposed to discretely process the belt drive system. According to the rigid flexible multi body coupling contact between the conveyor belt and the roller, a multi-body nonlinear contact dynamic model of belt drive system is established. The influence of the cylinder parallelism, viscoelastic characteristics, operating state and the depth of the conveyer belt to the displacement of the conveyer belt is studied, and the influence of conveyor belt deviation on the reliability of active drum is studied on this basis. The results show that the displacement of the conveyer belt is not only related to its force, but also related to the elastic deformation caused by the viscoelastic properties of the material. There is a monotonous and increasing relationship between the parallelism tolerance of the roller and the displacement of the conveyor belt. The viscoelastic properties of the conveyer belt can determine the depth of the pressure subsidence between the conveyer belt and the roller, and the displacement of the conveyer belt increases with the increase of the depth of the pressure. In addition, the higher the speed of the conveyor belt, the longer the transport distance, the greater the offset of the conveyer belt. and the deviation of the conveyor belt will lead to changes in the stress, strain and distribution of the active drum, which will reduce the service life of the active roller.

Key words: conveyor belt, deviation, multi-body dynamics, disperse, viscoelasticity

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