Thin-slotting lifting synchronous grouting device and its usage method
US11149400B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 27, 2020 |
| Grant date | Oct 19, 2021 |
| Priority date | — |
| Expiry date | Apr 27, 2040 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02D2250/003
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A thin-slotting lifting synchronous grouting device and its usage method are provided. The device includes a hollow force-bearing column through which a feeding pipe passes; wherein: left and right cutting plates are respectively fixedly arranged on each side of the hollow force-bearing column; a left connecting plate is fixedly arranged on an outside of the left cutting plate; a right guiding column is fixedly arranged on an outside of the right cutting plate; center lines of the left connecting plate, the right guiding column and the hollow force-bearing column are in a same plane; a top end of to the feeding pipe is connected to a grouting device, and a bottom end is connected to a spraying device; a spraying nozzle of the spraying device stretches out along the hollow force-bearing column; and a lower end of the hollow force-bearing column is connected with a disposable conical head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.