Effects of longitudinal vibration of conveyor belt on multi-driving force distribution

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Journal of Vibration and Shock ›› 2021, Vol. 40 ›› Issue (7) : 231-236.

YAO Yanping1, ZHANG Bisheng2

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Abstract

In running process of a belt conveyor, the dynamic tension of conveyor belt propagates in the form of wave along the running direction of belt, and produces longitudinal vibration in process of transmission. The larger longitudinal vibration of belt can affect the distribution of driving force of multiple rollers. Here, Kelvin-Voigt viscoelastic model was taken as the mechanical model of conveyor belt, and the distribution equation of driving force for longitudinal vibration of long-distance belt conveyor was established based on the constitutive equation of conveyor belt. Taking a certain long-distance belt conveyor driven by its head double-drum in Tianjin Port as an example, the driving force variation curve of driving drum and the vibration curve of conveyor belt in start-up process were simulated. The simulation results were compared with test ones. It was shown that for the belt conveyor system driven by its head double-drum, with increase in elastic modulus of conveyor belt, vibration of belt is reduced, and driving force distribution of double-drum drive is closer to the ideal power ratio; the study results can provide a reliable basis for rational selection of conveyor belt, and make the motor work near the design work point to avoid burning the drive motor due to uneven driving force distribution.

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long distance belt conveyor / longitudinal vibration / multi-drum drive / driving force distribution / AMEsim

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YAO Yanping1, ZHANG Bisheng2. Effects of longitudinal vibration of conveyor belt on multi-driving force distribution[J]. Journal of Vibration and Shock, 2021, 40(7): 231-236

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