Analysis of Bolt Fracture Cause for Gearbox of Cold Rolling Mill

Abstract:

In order to solve the continual bolt fracture fault for gearbox of rolling mill in one cold strip rolling mill plant, vibration signals of gearbox in the process of rolling were collected by experimental research. Based on the signal analysis, combined with the results of statics and modal analysis of bolt, abnormal vibration of gearbox is confirmed the main cause for bolt fracture. Moreover, by further signals analysis of gearbox and vibration intensity analysis of bearing pedestal, finally found deflection of input shaft is the direct cause for gearbox abnormal vibration. Through the maintenance, it was found that eccentricity ring of bearing of input shaft had been worn down. The results of maintenance proved effectiveness of this paper.

• Periodical: Advanced Materials Research (Volumes 479-481)
• Pages: 1288-1292
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.479-481.1288
• Online since: February 2012
• Authors: Xing Dong Wang, Lei Shi, Wei Peng, You Rong Li, Ao Liu
• Keywords: Abnormal Vibration, Bolt, Frequency Analysis, Gearbox

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