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Self-Synchronization of a Vibrating Jaw Crusher with Allowance for Interaction with the Medium Processed

  • MECHANICS OF MACHINES
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Abstract

The vibrations of a vibrating jaw crusher model, excited by two self-synchronizing unbalanced-mass vibration exciters, with allowance for the interaction with the processed medium are examined. It is found that the frequency range of stable antiphase synchronization of the exciter rotation required for normal operation of the crusher, depends significantly on the gap between the crusher jaw and the medium element, and a decrease in the initial gap leads to an expansion of the frequency range of exciter stable antiphase synchronization. In the absence of an initial gap and the appearance of medium pressure on the jaws in the superresonance range, the appearance of a stability region of the synchronous-in-phase exciters rotation is possible. It is shown that, at a constant vibration excitation frequency, a change in the initial gap between the jaws and the processed medium can lead to a change in the type of exciter synchronization and, accordingly, vibrations of the jaws.

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Funding

This work was supported by the Russian Foundation for Basic Research, project no. 18-08-01491_a.

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Authors and Affiliations

  1. Blagonravov Institute of Mechanical Engineering, Russian Academy of Sciences, 101990, Moscow, Russia

    A. E. Shokhin

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  1. A. E. Shokhin
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Correspondence to A. E. Shokhin.

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Translated by A. Kolemesin

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Shokhin, A.E. Self-Synchronization of a Vibrating Jaw Crusher with Allowance for Interaction with the Medium Processed. J. Mach. Manuf. Reliab. 49, 500–510 (2020). https://doi.org/10.3103/S1052618820060084

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  • DOI: https://doi.org/10.3103/S1052618820060084

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