Improvement of roadway stage loader for 7 m large mining height face
Aiming at the scraper bending and fracture,sprocket sealing failure,and other issues in the operation of roadway stage loader in 7 m high mining height face of Shendong mining area,by analyzing the failure characteristics of scraper and sprocket components and the stress status of components,measures such as upgrading the chain,increasing the scraper section and sprocket shaft diameter,optimizing the chain center distance,were taken to comprehensively improve the stress status of scraper and sprocket components.The scraper strength was increased by 1.7 times,the deflection of the sprocket shaft at the bearing support area is reduced to 1/8,significantly improving the performance of the components.Component universality was fully considered during equipment renovation,drive frame and pan could be used directly to reduce renovation cost.By renovating the imported equipment,experiences are accumulated for promoting the development of domestic coal mining equipment.
stage loaderscrapersprocket assemblyround link chainfailure analysis
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