Patent · US Expired

Vibration suppression apparatus for hydraulic system with improved accumulator filing circuit

US5245826A · kind A · utility

27Cited by

7References

8Claims

0Family size

Assignee

Mannesmann Rexroth AG · DE

Inventors

Dieter Roth · Schlüchtern, DE
Georg Rausch · Lohr am Main, DE

Key dates

Filing date	Aug 24, 1992
Grant date	Sep 21, 1993
Priority date	—
Expiry date	Aug 24, 2012

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE02F9/2207
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A hydraulic control circuit for building machinery includes a hydraulic cylinder to operate a tool. To stabilize vibrations of the tool around the pitch axis, a hydraulic accumulator is provided to be connected to a pressure source via a fill line. A shut-off valve is disposed in the fill line, which valve is subjected to the pressure in the accumulator such that in operating the cylinder the accumulator is loaded to a pressure corresponding to the load pressure. The system is very simple in structure and fluid losses are eliminated.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.