Monitoring device for a slipform paver for monitoring the compaction of concrete and a method for monitoring the compaction of concrete during operation of a slipform paver
US11525224B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2020 |
| Grant date | Dec 13, 2022 |
| Priority date | — |
| Expiry date | Aug 18, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P2207/01
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A device is provided for monitoring the compaction of concrete introduced into a slipform of a slipform paver by means of at least one concrete compacting device that has an asynchronous motor for driving an unbalanced mass which generates vibrations. The monitoring device comprises an apparatus for monitoring the stator current of the asynchronous motor, the apparatus being configured such that a change in the compaction of the concrete is determined based on an analysis of the stator current. The apparatus for monitoring the stator current of the asynchronous motor is preferably configured such that the amplitude spectrum of the stator current is determined in order to analyse the stator current. It is advantageous that the compaction of the concrete is not monitored using sensors which are exposed to harsh ambient conditions during operation of the slipform paver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.