Dragline roller track improvement. Volume II. Field measurement of dragline roller circle loading. Final report, September 30, 1976-July 30, 1980
The period from September 1977 to September 1978 covered laboratory rolling contact rig tests to evaluate typical low hardness dragline track materials. The results of this work are covered by DOE/ET/9121-1 Final Report, Volume I. The period from September 1978 to July 1980 covered field measurements of dragline roller circle loadings. The results of this work are covered by DOE/ET/9121-2 Final Report, Volume II. During May 1979, a field test group visited the Beltona Mines in Warrior, Alabama, for the purpose of instrumenting and testing dragline roller circle loading. This testing was done both before and after the introduction of elastomeric padding between the upper track and rotating frame. The data collected indicates installation of an elastomeric pad between the rotation frame and the upper track reduced the strain in the upper track. The primary reason for these load and strain reductions was added flexibility provided by the elastomeric pad coupled with redistribution of local loads. Installation of the elastomeric pad also reduced the peak roller loads resulting from hard spots due to dragline construction. More field data is necessary to fully appreciate the positive and negative effects of elastomeric pad on roller track loading. This information can be obtained through more thorough testing and instrumentation program.
- Research Organization:
- Franklin Research Center, Philadelphia, PA (USA)
- DOE Contract Number:
- AC01-76ET12502
- OSTI ID:
- 5239996
- Report Number(s):
- DOE/ET/12502-1(Vol.2)
- Country of Publication:
- United States
- Language:
- English
Similar Records
Dragline bucket improvement survey. Final report, September 30, 1977-September 29, 1979
Tonopah Test Range Air Monitoring: CY2018 Meteorological, Radiological, and Wind Transported Particulate Observations