Newly constructed basement reduces ­vibrations

University of Thessaloniki, AGET Heracles, Lafarge Group

Calculations using the finite element method (FEM) provided a significant optimization to the basement of cement mills. Operation-related vibrations can be reduced in this way.

Introduction

The dynamic behaviour and thus the operational reliability of large mechanical installations such as cement mills can be strongly affected by the basement of their driving units. Increased vibrations, mainly in the region of the two pinion girth gear housing basements of the double mill drive were measured during the operation of a cement mill in the Halkis plant of Heracles General Cement Co (Lafarge Group). These led to excessive damages to the tooth flanks of the pinions. The pinions were replaced without avoiding the intense vibrations in both pinion housings. To detect the...

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