Hydraulic drive system for a construction material pump, and construction material pump
US11231054B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 7, 2019 |
| Grant date | Jan 25, 2022 |
| Priority date | — |
| Expiry date | Jun 7, 2039 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04G21/02
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A hydraulic drive system for a construction material pump has a hydraulic circuit for hydraulic fluid, a feed pump which is designed to feed hydraulic fluid into the hydraulic circuit, at least one controllable pressure-limiting valve unit, which is designed for variable adjustment of a limit pressure of hydraulic fluid of at least one portion of the hydraulic circuit within a pressure range, and a control unit. The control unit is designed to control the pressure-limiting valve unit according to at least one operating parameter of the hydraulic drive system and/or according to the hydraulic fluid in such a way that the pressure-limiting valve unit adjusts the limit pressure of the portion of the hydraulic circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.