The gearboxes used in cranes have proven themselves to bereliable. However, some gear failures have caused a reevaluation ofthe design, configuration, and manufacture of gearboxes in largecranes. Since crane gearboxes do not operate continuously, gearsystem fatigue characteristics have not been in the forefront ofsystem operation. Studies have indicated that in many cases usagerates, loading, and in many cases both, have increased. In someapplications, crane usage has increased by factors of two, orthree, or even more, and gear loading has similarly increased. Thishigher usage makes the cumulative effects of fatigue much moreimportant. This paper presents a case study of one particular cranegear failure, including failure analysis and resultant remedialactions, along with a discussion of the results and implicationsfrom extensive gearbox inspections that were conducted as a resultof the initial failure.
- Edition:
- 06
- Published:
- 10/01/2006
- Number of Pages:
- 14
- File Size:
- 1 file , 600 KB
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