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AssigneeDanfoss Power Solutions ApS
InventorsMorten Hoeck Petersen, Thomas Træger Hansen, Thomas Bauer, Niels Bjarne Hansen, Jeroen Hinse
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Hydraulic steering (1) is disclosed comprising a high pressure port (P), a low pressure port (T), two working ports (CL, CR), a manual steering section (3), and a steering valve section having a steering valve 5 and a hydraulic driving arrangement (6) adjusting hydraulically a position of said steering valve. A change from automatic steering to manual steering should be reliably ensured when the manual steering section is directly influenced by a driver. To this end, a switching valve (11) is provided, which is actuatable between a first position in which said driving arrangement (6) is supplied with hydraulic fluid under pressure, and a second position in which a supply of hydraulic fluid to said driving arrangement (6) is interrupted, wherein said switching valve (11) is hydraulically actuated into said second position by a pressure generated upon actuating of said manual steering section (3).
A hydraulic steering comprising a high pressure port (P), a low pressure port (T), two working ports (CL, CR), a manual steering section and a steering valve section having a steering valve and a hydraulic driving arrangement adjusting hydraulically a position of said steering valve, wherein a switching valve is provided, which is actuatable between a first position in which said driving arrangement is supplied with hydraulic fluid under pressure, and a second position in which a supply of hydraulic fluid to said driving arrangement is interrupted, wherein said switching valve is hydraulically actuated into said second position by a pressure generated upon actuating of said manual steering section.
Dependencies are inferred from the claim text.