Floating clamping device for injection head of continuous oil pipe
US9493997B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2011 |
| Grant date | Nov 15, 2016 |
| Priority date | — |
| Expiry date | Nov 6, 2032 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/22
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A floating clamping device for an injection head of a continuous oil pipe, including a drive sprocket, a transmission chain, a supporting plate, a pushing plate, clamping oil cylinders and a clamping assembly. At least two clamping oil cylinders are installed on the supporting plate fixedly. The pushing plate is fixed on the supporting plate through a pin shaft. The clamping assembly includes a saddle-shaped clamping block, a clamping block seat and rollers which are mounted on the clamping block seat. The clamping assembly is mounted on the transmission chain. A piston rod of the clamping oil cylinder is pressed on one face of the pushing plate, while the other face of the pushing plate is pressed on the rollers. The pushing plate has a simple structure and is convenient for maintenance; the clamping device has a compact structure and a reduced volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.