Study on Reliability of Shearer Permanent Magnet Semi-Direct Drive Gear Transmission System

Author(s)
J. Chen, L. Sheng, M. Li, S. Jiang, W. Li
Publisher
Elsevier
Source
International Journal of Fatigue
Keywords
gear dynamic reliability, Gear transmission system in a shearer, load spectrum, nonlinear damage accumulation, Nonlinear Dynamics
Year
2019

The permanent magnet semi-direct drive cutting transmission system of shearer is taken as the research object, the non-linear dynamic model of the system is established and the Runge-Kutta method is used to solve it. The statistical processing is carried out to gear stress by rain-flow counting method, and an eight-stage random loading model is established. Combining the nonlinear fatigue damage theory, the dynamic reliability of gear is predicted through the modified stress-strength interference model. Finally, the influence of some parameters on gear reliability is further studied, which provides a reference for the reliability optimization of gear in shearer cutting unit.

Keywords: Gear transmission system in a shearer, nonlinear dynamics, gear dynamic reliability, load spectrum, nonlinear damage accumulation

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