Rotary drilling rigs, general construction equipment, are widely used for deep drilling of ground for the foundations of public works. A new 250kN. m-type rotary drilling rig, most widely used in this field, is under development, and this study focuses on the operational safety of the mast subassembly on the basis of structure analysis of the mast subassembly using a finite element method with ANSYS. When using a drilling rig, an electric rotary drive supplies power for drilling. Here, the elevation of the rotary drive along the mast needs to be changed according to the geological construction environment. Through the analysis, the allowable torques at various elevations of the rotary drive are evaluated, also the safety of the drilling tool called the kelly bar subassembly is examined. Finally, the suitability of the mast subassembly design is examined from the analysis results.
Finite Element Analysis on a 250 kN.m-Type Rotary Drilling Rig for Foundation of Geological Construction
2012
6 Seiten
Conference paper
English
The Finite Element Analysis of the Rollers in a Rotary Steerable Drilling Tool
British Library Conference Proceedings | 2013
|Foundation pit foundation treatment process and rotary drilling machine suitable for same
European Patent Office | 2023
|Fabricated buoyancy tank platform and rotary drilling construction method
European Patent Office | 2022
|Rotary drilling rig traveling device, rotary drilling rig and using method
European Patent Office | 2021
|