Danfoss Power Solutions Aps

Sauer Danfoss Aps

Ole Soerensen

Abdul Karim Rahimzai

Niels Arbjerg

A hydraulic steering arrangement is shown having a steering unit and two working ports each of which being connected to the steering unit by a working line (), wherein an anti jerk valve () is arranged in each working line (), the anti jerk valve () having a valve element () being loaded in opening direction by the pressure in the working line () and in closing direction by restoring means (). A vehicle equipped with such a steering arrangement should have a good comfort. To this end the valve element () is loaded in closing direction by the pressure in the working line () via delay means ().

Hydraulic steering arrangement

A hydraulic steering arrangement () is described having a main flow path () with a flow meter () and an amplification flow path () opening into the main flow path () at a connecting point () located between the flow meter () and a working port arrangement (L, R). Such a steering arrangement should have in a simple way a large flow of the hydraulic fluid to the working port arrangement. To this end pressure increasing means () are arranged in the main flow path () upstream the connecting point ().

The invention concerns a hydraulic steering arrangement with a hydraulically actuated steering valve arrangement, steering motor connections (CL, CR), which are connected to supply connections (HP, T) via the steering valve arrangement, and a steering unit. It is endeavored to equalize in a simple manner the steering behavior in both directions. For this purpose, it is ensured that the steering valve arrangement has a directional valve and a flow control valve.

A hydraulic steering arrangement includes a steering valve, a steering motor, connected with a high-pressure connection and a low-pressure connection via the steering valve, and with a steering unit, connected via the steering valve with a pilot pressure valve, whose outlet is connected with the low-pressure connection. It is endeavoured to improve the steering behaviour. For this purpose, the pilot pressure valve is opened, before the steering valve creates a connection between the high-pressure connection and the steering motor.

Growing community of inventors

Nordborg, Denmark

Ole Soerensen