Track maintenance machine for compaction of ballast
US11479922B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 3, 2018 |
| Grant date | Oct 25, 2022 |
| Priority date | — |
| Expiry date | Jun 25, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T30/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A track maintenance machine for compaction of ballast under sleepers of a track includes a machine frame movable by undercarriages on the track and a tamping unit which includes an electric vibration drive for vibratory actuation of tamping tools. An electric intermediate circuit has an electric energy store or storage device. An electric machine is associated with at least one undercarriage and coupled for generator operation to the intermediate circuit. The electric vibration drive is coupled to the intermediate circuit for supply. In this way, braking energy is used in an optimal manner for supplying the vibration drive. A method for operation of a track maintenance machine is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.