Earth pressure balance shield machine without cutter disk
US9016801B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 3, 2012 |
| Grant date | Apr 28, 2015 |
| Priority date | — |
| Expiry date | May 3, 2032 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21D9/08
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An EPB shield machine without disc cutter, which includes a partition unit formed by a moveable partition member (30) and a stationary partition member (31), a front shield unit (13) including a cutting unit (1) with cutting head (11) and cutting teeth (12), a shaft member (2) connected to the cutting head (11) and a power transmission unit formed by a transfer case (5), a reducer (6) and a driving motor (7). In the power transmission unit at an upper portion of the machine, the transfer case (5) is fixedly to the moveable partition member (30), a sliding arrangement supports the reducer (6) and the driving motor (7), which are connected to the transfer case (5, and a telescopic cylinder (26) is connected to the sliding arrangement. The machine has advantages of high cutting efficiency, balanced service life, high directional construability and high adaptability to tunnel cross section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.