Concrete pumping structure and control method thereof
US9322398B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 16, 2011 |
| Grant date | Apr 26, 2016 |
| Priority date | — |
| Expiry date | Dec 27, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B9/1178
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A concrete pumping structure and a control method thereof are disclosed. The concrete pumping structure includes a first pumping cylinder structure and a second pumping cylinder structure. Each pumping cylinder structure includes a delivery cylinder (1), a water tank (3) and a driving oil cylinder (7). The delivery cylinder (1) has a concrete piston assembly (2) inside, and during the pumping process, a piston rod (6) of the driving oil cylinder (7) drives the concrete piston assembly (2) to reciprocate in the delivery cylinder (1), and the water tank (3) is positioned between the delivery cylinder (1) and the driving oil cylinder (7). The concrete pumping structure also includes a concrete return hydraulic system, which controls the two driving oil cylinders (7) and drives the two concrete piston assemblies (2) to return back to the water tank (3) during returning the concrete.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.