Study on reliability of shearer permanent magnet semi-direct drive gear transmission system. (March 2020)

• Record Type: Journal Article
• Authors: Chen, Jiajun; Li, Wei; Sheng, Lianchao; Jiang, Song; Li, Min
• Is Part Of: International journal of fatigue. Volume 132(2020)
• Publication Date: 2020-03
• Subjects: Gear transmission system in a shearer -- Nonlinear dynamics -- Gear dynamic reliability -- Load spectrum -- Nonlinear damage accumulation; Materials -- Fatigue -- Periodicals; Materials -- Fatigue; Periodicals; 620.1122
• DOI: 10.1016/j.ijfatigue.2019.105387
• Languages: English
• ISSNs: 0142-1123

Abstract

Highlights: The simulation of cutting load in coal seam with gangue is proposed. The nonlinear residual strength model under multistage random loading is proposed. An improved stress-strength interference model under random load is proposed. The influence of system parameters on the reliability is analyzed. Abstract: 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.