Mining scraper conveyor sprocket replacement and repair evaluation method
LIU Huifeng
GAO Zhong
ZHAO Lijia
Abstract：[Objective]The excessive wear of the scraper conveyor sprocket and the over-life working condition will lead to the occurrence of the stuck chain,broken chain and other faults,which will adversely affect the normal operation of the convey-or equipment.In order to guide users to replace the sprocket that is not suitable for further use and reduce the incidence of equip-ment failure,a mining scraper conveyor sprocket replacement and repair evaluation method was proposed.[Methods]Based on the Archard wear theory,firstly,the hardness characteristics of the quench hardness layer of the sprocket were studied,and then the dynamic simulation analysis on the meshing transmission process of the ring chain drive system under different wear degree of the sprocket was carried out.The dynamic characteristics of the scraper conveyor were tested to verify the accuracy of the simulation analysis.[Results]The test results show that when the wear depth of the sprocket chain socket reaches the maximum quenching hardness layer depth,the performance of the sprocket has decreased significantly,and the sprocket should be re-placed.When the speed fluctuation,the contact force and the tension increase abnormally in the ring chain drive system,the sprocket should also be replaced in time to ensure the stable operation of the equipment.The proposed method provides a basis for the maintenance and replacement of the scraper conveyor sprocket.
Keywords：Scraper conveyerSprocket wearArchard wear theoryHardness characteristic analysisDynamic simulationRepair evaluation criteria
Publication Date：2025-01-14
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：9( 121-129 )