【 Lubrication case 】 A cement plant rolling machine gear box fault analysis

【 Lubrication case 】 A cement plant rolling machine gear box fault analysis of 2019 - 03 - 5 a, case background a cement plant over the years has been widely research testing equipment of oil monitoring work. Detected by monitoring purpose mainly through the oil equipment may appear early wear, so as to take timely measures to maintenance. Second, monitoring conditions in December 2015 and April 2016, three of the reducer monitoring sampling, found that the wear index Fe element content in the two monitoring and PQ indices increased sharply, Fe element is obviously rising trend, indicating that the gearbox gear and bearing are very serious abnormal wear and tear, and the wear is rising. In addition, according to the results of the wear particle analysis gear oil contains a large number of steel adhesive abrasion particles and steel fatigue wear particles, a large number of clay particles, indicating that the gearbox gear and bearing are very serious abnormal wear and tear, and there are local high temperature. , widely research testing in December 2015 and April 2016 when monitoring for the unit to a red warning by the alert on site. , but due to urgent production tasks, unable to stop equipment still continue to work, until June 17, 2016, due to the high speed shaft input jump car bearing temperature was too high. Dismantling secondary planet gear train was found damaged to varying degrees, the secondary damage of planetary gear train is most serious. 3, case revealed the case reflects the existence of three problems: 1) Did not cause enough attention, the results of oil testing to detect warning level of the unit did not take any measures; 2) Daily inspection maintenance does not reach the designated position, failed to clean and replace lubricating oil filter, and rely on the bearing temperature alarm system; 3) For warning level of the unit did not shorten the monitoring period, strengthen the daily maintenance inspection. （ Extensive research test shandong inspection center)