Working equipment with capabilities of preventing buckling of hydraulic cylinder
US12297848B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 2023 |
| Grant date | May 13, 2025 |
| Priority date | — |
| Expiry date | Nov 6, 2043 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2211/864
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A working equipment including a base; a movable arm; a hydraulic system including a hydraulic cylinder provided with a cylinder cavity a piston, and a piston rod, the piston dividing the cylinder cavity in a first chamber and a second chamber; and a load holding valve unit. A pressure measurement member is arranged to measure pressure of the hydraulic fluid in the second chamber during an outward movement procedure of the piston rod. A working equipment control system is arranged configured to receive measured pressure values obtained in the second chamber during an outward movement procedure, and to evaluate the measured pressure values by applying at least one evaluation criterion related to risk of hydraulic cylinder buckling of the hydraulic cylinder. The working equipment control system is further configured to perform a predetermined activity to reduce the risk of hydraulic cylinder buckling in dependence of the result of the evaluation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.