The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 14, 2025
Filed:
Apr. 13, 2021
Herrenknecht Aktiengesellschaft, Schwanau, DE;
Werner Burger, Schwanau, DE;
Gerhard Wehrmeyer, Schwanau, DE;
HERRENKNECHT AKTIENGESELLSCHAFT, Schwanau, DE;
Abstract
In a tunnel boring machine with a shield skin () extending in a longitudinal direction, a sensor unit () for detecting convergences has a number of hydraulic distance sensors () equipped with an extendable probe () with extension path measurement. By virtue of the distance sensors (), the distance between the shield skin () in the area of the relevant distance sensor () and the surrounding rock mass () can be detected as a distance value, so that the thickness of an annular gap () can be determined. The distance sensors () are arranged in the longitudinal direction of the shield skin () at a measuring distance which corresponds to a typical ring width of a tubbing (). A central unit evaluates the distance values of the distance sensors () to determine convergences.