Metering orifice arrangement for a hydraulic current divider and current adding device
AssigneeBosch Rexroth AG
InventorKarl Krug-Kussius
Life of this patent
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Abstract
There is disclosed a variable metering orifice arrangement for a current divider and current adding device, the metering orifice arrangement including one or more working terminals by each of which a consumer can be supplied with pressure fluid. The metering orifice arrangement includes a metering orifice piston to which control pressure tapped off between two throttles of a pressure divider can be applied, wherein at least one of the throttles is variable.
Claims18
A metering orifice arrangement for a hydraulic current divider and current adding device comprising a metering orifice piston which controls one or more variable metering orifices located in parallel to each other for each flow direction, each of which metering orifices is arranged between a common first working terminal and a second working terminal at the consumer side, and to which the pressure prevailing in the first terminal is applied in a first direction, comprising an adjustable pressure dividing circuit between the first terminal and the working terminals including at least two throttles for generating a control pressure lying between the pressure prevailing in the first terminal and the pressure prevailing in the working terminals which can be applied to the metering orifice piston in a second direction opposed to the first direction, and comprising a centering spring arrangement by which the metering orifice piston is centered in a central position in which the metering orifices are closed, characterized in that the flow cross-section of at least one of the two throttles of the pressure dividing circuit is variable.
Dependencies are inferred from the claim text.