Due to the bad underground environment, geological conditions and the cooperation of the three machines, the coal mining scraper conveyor has serious wear and failure phenomena. In order to extend the service life of the coal mining scraper conveyor and improve the efficiency, let's analyze the reasons.
1. Vibration noise of coal mining scraper conveyor reducer or can not bear heavy load (Poor lubrication results in dry friction between the gear teeth and the bearing, or impurities in the lubricating oil cause poor gear meshing, resulting in detachment of the tooth surface; the installed dimensions do not meet the standard; the scraper is in the process of working Long-term intermittent hard impact.)
2.Coal mining scraper conveyor sprocket teeth wear seriously or bearing damage (The chain is too tight, resulting in increased alternating pressure on the gear teeth; the sprocket assembly has not been turned 180 ° for installation for 6 months; the hardness is too large; the floating seal of the sprocket teeth is weak; the gap between the sprocket and the bearing is relatively Large, causing damage to the seal ring.)
3. Middle groove wear (The middle trough is under severe working conditions and can withstand the overloading operation of the shearer, that is, the vertical direction is subjected to the heavy pressure of the shearer and the impact of the drum when cutting the coal layer; Heavy pressure; lateral and longitudinal forces pushing and pulling the hydraulic support.)
4. The chain of the coal mining scraper conveyor is broken or worn seriously. (In addition to sliding friction during operation, the chain is also subject to large static and dynamic loads and is eroded by mineral water.)
