WebA shaft, which carried both a worm wheel and hoist barrel, fractured at a reduction in diameter adjacent to a mating gearbox. The appearance of the fracture was characteristic of a fatigue failure of a rotating shaft resulting from excessive bending stresses. WebMechanical failure of the motorized hoist. Bearing damage. Bearing damage produces a "clang-clang" sound near the bearing; when the shaft center of the coupling is not correct or the motor slightly runs, the entire crane motor emits an extremely high-frequency "whining" sound, which is sometimes accompanied by a sharp, piercing sound.

Failure investigation of a crane gear damage - ScienceDirect

WebThis research deals with a teeth failure of a gear shaft that served as a part of shipyard crane drive train. Almost all of the teeth of a spiral bevel gear, part of a larger shaft, fractured during normal operation of the crane. Failure analysis … WebSep 1, 2014 · 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 ... chicago med ava death

Fatigue Failure Analysis of a Speed Reduction Shaft - MDPI

WebThis paper deals with the failure analysis and redesign of shaft of overhead crane having capacity 25 tonne. There is problem of failure of the shaft in gear box which is mounted on the crane. The shaft breakage occurred due to dynamic, alternating low tensile-compressive stresses and simultaneous torsional load. An overhead crane is mechanical ... WebOct 10, 2013 · open access. This paper reports the results of failure analysis of a two high gearbox shaft of a gearbox in a hot steel rolling mill in Thailand which fail prematurely after about 15,000 hours of service. Standard procedures for failure analysis were employed in this investigation. The results showed that the shaft failed by fatigue fracture. chicago med ava bekker