Φ177mm PQF连轧管机组减速机长寿化管理实践

Practices of Management for Long Service Life of Gear Reducer of Φ177mm PQF Pipe Mill

统计分析了Φ177 mm PQF连轧管机组减速机近几年的运行故障情况,提出制约该连轧减速机长寿化运行的重要原因:减速机轴承承载能力不足、连杆结构形式振动大、轴承润滑不充分。针对上述缺陷制定了改进措施:重新设计减速机的轴承型号以增大承载力;增大供油管径实现充分润滑;重新设计轴承间隙调整套,使其硬度满足要求;优化轴承游隙及齿轮侧隙调整值;改进减速机长连杆的结构形式,减少振动。

Statistically analyzed here in the paper are the running faults of the gear reducer of the φ177 mm pipe mill as occurred over the recent years. Identified are the major elements restraining the long-life running of the reducer, i.e., poor loading ability of the bearing, serious vibration of the link rod due to its improper structure, and insufficient lubrication of the bearing. Accordingly corrective actions are determined, including redesigning the model of the bearing to increase its loading force, enlarging the caliber of the oil-supply pipe to ensure adequate lubri- cation, redesigning the bearing gap adjusting bush to ensure its hardness up to relevant requirement, optimizing the adjusting values of the bearing clearance and the gear side clearance, and modifying the structure of the long link rod to reduce its vibration.