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矿井主扇风机能否长期正常运转,除选型合理、按装质量符合部颁标准、检修及时外,机械振动的大小和各个轴承温升是否超限有关。而轴承温升在回转部件正常安装及润滑条件下往往与振动大小有关。一、形成主扇机械振动的主要原因1.扇风机叶轮质量分布不均匀,根据出厂说明规定:“叶轮出厂前要作动平衡试验,合格后方准出厂。”但在现场使用过程中,由于锈蚀和疲劳产生裂纹,少数空心叶
Mine main fan can long-term normal operation, in addition to selecting a reasonable, according to the quality standards installed Buban, maintenance in a timely manner, the size of the mechanical vibration and the bearing temperature is overrun. The bearing temperature rise in the normal installation of rotating parts and lubrication conditions are often related to the size of the vibration. First, the main reason for the formation of the main fan mechanical vibration 1. Fan fan impeller uneven distribution of quality, according to the factory instructions: “Impeller before the plant to be balanced test, qualified before the factory.” But in the field of use, due to corrosion Cracks and fatigue, a few hollow leaves