Top drive mechanism for drill rod
US9458382B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 7, 2013 |
| Grant date | Oct 4, 2016 |
| Priority date | — |
| Expiry date | Aug 15, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10B33/006
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A top drive mechanism for a drill rod for cutting of delayed coking units in the petroleum refining industry includes a gooseneck connector, a washpipe assembly, an output shaft, and a power mechanism for driving the output shaft to rotate. The output shaft has an integral structure formed by a shaft body and a flange; a step I is disposed on an outer circumferential surface of the output shaft; a support ring is disposed on an end face of the step I; the output shaft mates with the support ring through a key I; a lock nut fixes the support ring onto the end face of the step I; a lower portion of the support ring is provided with a self-aligning thrust roller bearing. The structure has high stability such that the service life of the top drive device is extended and installation and disassembly are easy and fast.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.