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Дата издания
15.12.2025На каком языке издана
ISSN
1998-4502Область исследования
Тип исследования
Аннотация (краткое описание)
Eccentric–cycloidal gear reducers represent a promising type of drive for mining conveyor equipment due to their high shock resistance, multi-tooth load distribution and tolerance to contamination. However, the dynamic behavior of the contact interaction between the eccentric tooth and the cycloidal wheel has not been sufficiently quantified. This limits their large-scale implementation in heavy industrial environments. A detailed analysis of vibration stability, contact force patterns, and geometric conformity of the tooth profile is required to assess operational reliability. Purpose of the study. The aim of this research is to perform a numerical investigation of dynamic contact forces and vibration processes in an eccentric–cycloidal gear reducer used in mining conveyor drives and to evaluate the geometric conformity of the transmission by means of spectral and time-domain analysis. Materials and methods. A multibody dynamic model was developed in MSC Adams. The reducer geometry was imported from Autodesk Inventor, including real bearing parameters, material properties, inertial characteristics, and kinematic constraints. The tooth contact was described using a nonlinear Hertzian model with damping and Coulomb friction. Simulations were performed at an input speed of 750 rpm, gear ratio i = 9 and load torque of 2 kN·m. Vibration acceleration, contact force histories, frequency spectra, and impulse loads during tooth engagement were analyzed. Results. The acceleration of the eccentric shaft reached 350 mm/s2due to local oscillations in bearing units, while vibrations in the gear mesh were effectively damped to 0.004 mm/s2. The contact force exhibited a pronounced impulse of approximately 300 N during tooth engagement. Frequency analysis revealed a single dominant harmonic corresponding to the meshing frequency, without additional resonance peaks, indicating high geometric conformity of the cycloidal profile. The minimal contact area reduces the likelihood of pitting and surface chipping. Discussion. The results demonstrate high vibration resistance of the eccentric–cycloidal transmission and its suitability for mining conveyor applications with variable dynamic loads. The impulse nature of the contact force was quantified and shown to be within acceptable limits. Validation on a laboratory conveyor confirmed the accuracy of the numerical model and uniform motion transfer without phase delays. Conclusions. The investigated gear reducer exhibits low dynamic losses, stable load transfer and high vibration resistance. Numerical simulation confirms its potential for reliable operation in mining conveyor drives and its feasibility for replacing traditional gear systems under harsh industrial conditions. General conclusions. The eccentric–cycloidal reducer demonstrates favorable dynamic behavior, with low contact stresses and absence of detrimental resonant harmonics. The results support its further industrial implementation and optimization. Practical significance and future research. The findings may be used for designing energy-efficient conveyor drives, optimizing cycloidal tooth profiles, estimating fatigue life and developing digital twins of gearbox systems. Future research should focus on wear modeling, shaft misalignment effects, and thermo-mechanical behavior of the gear mesh. © 2025, North Caucasian Institute of Mining and Metallurgy, State Technological University. All rights reserved.DOI
10.21177/1998-4502-2025-17-3-1630-1641Тип публикаций
Практическое значение
The practical significance of this study lies in the possibility of applying the obtained results to the design and operation of mining conveyor drives equipped with eccentric–cycloidal gear reducers. The research confirms the high vibration resistance, stable load transmission, and operational reliability of this type of transmission under severe industrial conditions. The developed numerical model can be used for optimizing cycloidal tooth geometry, predicting dynamic loads, reducing contact stresses, and improving the energy efficiency of conveyor systems. The absence of harmful resonant harmonics and the low level of dynamic losses indicate reduced risks of pitting, tooth surface damage, and premature gearbox failure. The results also demonstrate the feasibility of replacing conventional gear transmissions with eccentric–cycloidal reducers in heavy-duty mining applications due to their shock resistance, multi-tooth load distribution, and tolerance to contamination. In addition, the validated simulation approach may serve as a basis for fatigue life estimation, predictive maintenance systems, and the development of digital twins for industrial gearbox applications.Квартиль
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SCImago (Scopus)Impact Factor
3Количество цитирований
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