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Research Article
Analysis on Vertical-pitch Coupled Dynamics Characteristics of Shearer with Corrected Load
Hongyue Chen
Liaoning Technical University
Corresponding Author
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Aiming at the severe vertical and pitching vibration of shearer in actual working conditions, the vertical-pitch coupled dynamics model of shearer with 13 degrees of freedom is established using multi-body dynamics theory. Based on the theories of elasticity, Hertz contact and collision dynamics, the connection stiffness model of traction part with rocker arm in existence of clearance and shearer body, the support stiffness models for the guide shoe and for the smooth shoe and the stiffness characteristics model of the rocker arm were constructed. Taking into account the convergence of solution process and the reliability of results, a modified drum load was proposed as the external excitation of the system and the dynamic characteristics of key parts of shearer under different working conditions were analyzed. The numerical model was validated against the vibration responses of a shearer and its critical components under different operating conditions obtained from a mechanical test.The research results provide theoretical basis for the structure optimization and process parameter optimization of the shearer.
Keywords
shearer, numerical model, nonlinear dynamics, reliability, vibration
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Due to technical limitations, full-text HTML conversion of this manuscript could not be completed. However, the manuscript can be downloaded and accessed as a PDF.
Hongyue Chen
commented on 10 January, 2021
This study describes a numerical model using a few different theories and approaches and many inputs for a complex vibrational environment of a shearer in coal mining. The authors test and validate the model using a testing platform instead of field testing. We believe that this study makes a significant contribution to the literature because existing studies have only analyzed the shearer vibration in individual directions or the dynamics of its individual components, thereby failing to consider the complex vibrational behavior. Further, we believe that this paper will be of interest to the readership of your journal because our method model can helps properly understand and harness multi-component and multi-system machine vibration most, thereby preventing expensive consequences. This aligns well with the aims and scope of your prestigious journal.
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Posted 04 Jan, 2021
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On 30 Dec, 2020
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On 29 Dec, 2020
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This preprint is under consideration at Scientific Reports. A preprint is a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Learn more about In Review
Research Article
Analysis on Vertical-pitch Coupled Dynamics Characteristics of Shearer with Corrected Load
Hongyue Chen
Liaoning Technical University
Corresponding Author
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
Peer Review Timeline
CURRENT STATUS: Under Review
Version 1
Posted 04 Jan, 2021
Community comments: 1
Editor invited
On 30 Dec, 2020
Submission checks complete
On 30 Dec, 2020
First submitted
On 29 Dec, 2020
Metrics
Comments: 1
PDF Downloads: ...
HTML Views: ...
Subject Areas
Physiology
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Aiming at the severe vertical and pitching vibration of shearer in actual working conditions, the vertical-pitch coupled dynamics model of shearer with 13 degrees of freedom is established using multi-body dynamics theory. Based on the theories of elasticity, Hertz contact and collision dynamics, the connection stiffness model of traction part with rocker arm in existence of clearance and shearer body, the support stiffness models for the guide shoe and for the smooth shoe and the stiffness characteristics model of the rocker arm were constructed. Taking into account the convergence of solution process and the reliability of results, a modified drum load was proposed as the external excitation of the system and the dynamic characteristics of key parts of shearer under different working conditions were analyzed. The numerical model was validated against the vibration responses of a shearer and its critical components under different operating conditions obtained from a mechanical test.The research results provide theoretical basis for the structure optimization and process parameter optimization of the shearer.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10
Figure 11
Figure 12
Figure 13
Due to technical limitations, full-text HTML conversion of this manuscript could not be completed. However, the manuscript can be downloaded and accessed as a PDF.
Hongyue Chen
commented on 10 January, 2021
This study describes a numerical model using a few different theories and approaches and many inputs for a complex vibrational environment of a shearer in coal mining. The authors test and validate the model using a testing platform instead of field testing. We believe that this study makes a significant contribution to the literature because existing studies have only analyzed the shearer vibration in individual directions or the dynamics of its individual components, thereby failing to consider the complex vibrational behavior. Further, we believe that this paper will be of interest to the readership of your journal because our method model can helps properly understand and harness multi-component and multi-system machine vibration most, thereby preventing expensive consequences. This aligns well with the aims and scope of your prestigious journal.