Vertical shaft drilling rig using novel drilling method
US10202807B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Dec 9, 2014 |
| Grant date | Feb 12, 2019 |
| Priority date | — |
| Expiry date | May 11, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21D1/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A vertical shaft drilling rig which includes a derrick and a flatcar element. The rig includes a drill pipe connecting to the derrick, a pipe joint provided on the drill pipe, a device for stabilizing cutterhead pressure connecting to the drill pipe, a torque amplification driver at which the device for stabilizing cutterhead is installed, a cutter head connected to the torque amplification driver, a separate plant on the ground surface, a muck removal system transporting the muck produced to the separate plant, an electric cabinet, a hydraulic station, a power line, and a deep shaft line extension device between the hydraulic station and the power line. The torque amplification driver includes a pressure balance valve, a planetary reducer, a drive flange and a main bearing. The deep shaft line extension device includes a float, a pulley assembly, a line reel, a steel wire and a winch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.