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Static and Dynamic Characteristics of the Chain Drive System of a Heavy Duty Apron Feeder



Junzhou Huo, Shiqiang Yu*, Jing Yang, Tao Li
School of Mechanical Engineering, Dalian University of Technology, Dalian, 116023, China.


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© 2010 Huo et al

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: (https://creativecommons.org/licenses/by/4.0/legalcode). This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the School of Mechanical Engineering, Dalian University of Technology, Dalian, 116023, China; Tel: +86 15998568017; Fax: +86 411 84707435 E-mail: shiqiang.yu@hotmail.com


Abstract

Mechanical models of a chain drive system are proposed and applied to the theoretical analysis of chain drive system of a certain type of heavy duty apron feeder in mobile crushing station, including a five-bar model discussing the speed fluctuation problems of the chain drive system, an elastic collision model probing the effects of impulsive loads and a model of meshing area revealing the stress of chain links. Theoretical analysis indicates that the teeth number and sprocket pitch have the most influential effect on the vibration in the conveying direction; external impulsive loads are caused a significant increment of chain force, especially when loads caused by large materials; the initial pressure angle affects the roller chain stress conditions immensely. Then, multi-body dynamics models are established for the verification of theoretical results and dynamic simulation. Simulation results are in good agreement with the theoretical results and illustrate that impulsive loads affect chain tension significantly.

Keywords: Apron feeder, chain drive system, impulsive loads, meshing area, multi-body dynamics simulation.