The internal factors of the broken shaft of screw conveyor reducer mainly include the following aspects:
1、the stress of shaft rupture is too large when the reducer is designed.
2、the curvature radius and the change curve of the transition fillet at the shoulder of the input shaft of the reducer are not carefully considered.
3、the reducer is in the form of vertical shaft, the first input shaft is the bevel gear shaft, and the more serious stress concentration occurs at the transition shaft of the bevel gear bearing.
4、reducer for Hardened reducer, reducer input shaft diameter is small, although by calculating the strength, because the shaft itself is very small, in the same shaft diameter changes the stress concentration and serious fatigue failure.
5、input shaft heat treatment quality is not qualified.