Coal mine machinery and equipment is a special large-scale mechanical equipment used in coal mine excavation, transmission and transportation, including mining machine, conveyor, roadway excavation equipment, underground auxiliary transportation, vehicle equipment, mine hoist, ventilation and dust removal equipment, coal washing and selection equipment, crane, special vehicles and so on.
The mechanical equipment in coal mine production has the following characteristics:
1. Harsh working environment, the equipment is always surrounded by dust, water vapor and harmful gases;
2. Severe working conditions, most of the mechanical equipment works under the conditions of high speed, heavy load, vibration, impact, friction and medium corrosion;
3. Long running time, most of the mechanical equipment works continuously all year round day and night;
4. Poor lubrication conditions, due to harsh environment, severe working conditions and short shutdown time, it makes mechanical parts can not get good lubrication and maintenance.
Therefore, the economic loss caused every year is amazing. Only by selecting the correct bearing, carrying out regular maintenance, timely maintenance, improving the quality of maintenance, and ensuring that all production equipment run in good condition, can reduce the wear of coal mine machinery, prolong its service life, realize the high efficiency and safe production of coal, and ensure the high productivity for the miners and make the equipment reach the expected service life.