Abstract
The scraper conveyor is vital for mine production but is susceptible to impact damage from falling coal during shearing. However, scholars have conducted limited research on wear patterns in the middle trough of scraper conveyors. This paper began by modeling and assembling the SGZ630/220 double-chain scraper conveyor. We then used the wear depth of the middle trough as a measurement parameter and employed EDEM software to study the impact wear patterns in the middle trough during coal transport under different working conditions, including lateral incline angle (5°, 0°, -5°), forward incline angle (5°, 0°, -5°), chain spacing (110mm, 320mm, 450mm), and particle size (20mm, 30mm, 40mm). The simulation demonstrated that adjusting the laying angle, reducing chain spacing, and optimizing coal particle size effectively minimize impact damage to the middle trough. These findings hold paramount importance for retrofitting scraper conveyors, enhancing their operational longevity.
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