Method and device for compaction of a track ballast bed
US11821147B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 2, 2018 |
| Grant date | Nov 21, 2023 |
| Priority date | — |
| Expiry date | Nov 11, 2039 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01B2203/127
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for compaction of a track ballast bed uses a tamping unit including two oppositely positioned tamping tools which are actuated with vibrations and are lowered into the track ballast bed during a tamping operation and moved towards one another with a squeezing motion. A progression of a force acting upon the tamping tool over a path covered by the tamping tool is recorded during a vibration cycle by sensors disposed at the tamping unit for at least one tamping tool. At least one characteristic value is derived therefrom and used to carry out an evaluation of the tamping operation and/or of a quality of the track ballast bed. The tamping unit is thus used as a measuring apparatus during operative use. A device for performing the method is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.