Control arrangement for a fully-hydraulic steering system

Details Control arrangement for a fully-hydraulic steering system Control arrangement for a fully-hydraulic steering system

B - Operations, Transporting

62

D

B62D 5/06 (2006.01) B62D 5/093 (2006.01) F15B 21/00 (2006.01)

Patent

CA 2054595

A control arrangement (4) is proposed for a fully-hydraulic steering system (1) with a metering motor section (11), a directional section (12), which is connected to the metering motor section by way of a fluid path, a pump connection (P), a tank connection (T) and two directional connections (L, R). In a control arrangement of this kind, it is desired that it shall be possible to compensate for leakage by a simple structural design. For that purpose, an auxiliary fluid path (16) with a controllable valve arrangement (15) branches off the fluid path between the metering motor section (11) and the directional section (12) and is connected to the pump connection (P) and/or to the tank connection (T).

Un aménagement de contrôle (4) est proposé pour une direction entièrement hydraulique (1) avec une section motrice de mesure (11), une section directionnelle (12) qui est raccordée à la section motrice de mesure au moyen d'un circuit de fluide, un raccord de pompe (P), un raccord de réservoir (T) et deux raccords directionnels (L, R). Dans un aménagement de contrôle du genre, il est souhaitable qu'il soit possible de compenser les fuites par une disposition constructive simple. A cette fin, un circuit auxiliaire de fluide (16) avec soupape pouvant être commandée (15) est branché sur le ciricuit de fluide entre la section motrice de mesure (11) et la section directionnelle (12) et est relié au raccord de pompe (P) et/ou au raccord de réservoir (T).

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