Pregledni rad

Failure of two overhead crane shafts

Željko Domazet ; Fakultet elektrotehnike, strojarstva i brodogradnje, Split
Francisko Lukša ; Fakultet elektrotehnike, strojarstva i brodogradnje, Split
Miro Bugarin ; Fakultet elektrotehnike, strojarstva i brodogradnje, Split

Sažetak

The failure analysis of two overhead crane shafts is presented: the failure of an overhead crane drive shaft and the failure of an overhead crane gearbox shaft, due to rotating-bending fatigue. The fracture of the overhead crane drive shaft originated in small radius fillet between two different diameters of the shaft. A new shaft was made with a larger-size fillet, resulting in reduced stress concentration in this region. The failure of the overhead crane gearbox shaft originated in the intersection of two stress raisers, due to a change in the shaft diameter and in the keyway corner. A new shaft was made with a larger-size fillet and a larger size radius of the keyway corner to minimize stress concentration in this section. In both cases the installed couplings were replaced by gear couplings in order to allow parallel and angular misalignment as well as to avoid additional load due to misalignment. The analysis shows that the fatigue life can be significantly increased with a simple change in the structural details

Ključne riječi

Failure analysis; Shaft failures; Overhead cranes

Hrčak ID:

238466

URI

https://hrcak.srce.hr/238466

Datum izdavanja:

3.3.2020.

Posjeta: 1.971 *