HYDRAULIC CONTROL ARRANGEMENT AND DISTRIBUTION VALVE SECTION
First Claim
1. A hydraulic control arrangement for pressure medium supply of a plurality of hydraulic consumers, comprising a load-sensing variable displacement pump (6), the adjustment of which is modifiable as a function of a signaling pressure present in a signaling line (18) by an LS pump regulator (8), a distribution valve (24) comprising a valve gate (52) in a valve bore, by means of which an opening cross-section of a metering aperture (28) positioned in a fluid path between a supply line (10) supplied by the pump (6) and a consumer line (14) leading to a consumer (1) can be controlled, wherein said signaling line (18), by connecting it with the supply line (10), is adapted to be impacted with an increased signaling pressure vis-à
- -vis the load pressure of said one consumer (1), characterized in that said signaling line (18) is adapted to be connected with said supply line (10) by shifting the valve gate (52) of said distribution valve (24).
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Accused Products
Abstract
A hydraulic control arrangement and a method for pressure medium supply of hydraulic consumers are disclosed, comprising an LS pump which can be controlled by a pump regulator dependent on the highest load pressure of the consumers. The pressure medium volume flow to each consumer is adjusted using a metering aperture, wherein on controlling a consumer a higher pressure than the load pressure is signaled to the LS pump regulator, so that the LS pump is controlled according to the higher pressure rather than the low load pressure of said consumer.
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Citations
15 Claims
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1. A hydraulic control arrangement for pressure medium supply of a plurality of hydraulic consumers, comprising a load-sensing variable displacement pump (6), the adjustment of which is modifiable as a function of a signaling pressure present in a signaling line (18) by an LS pump regulator (8), a distribution valve (24) comprising a valve gate (52) in a valve bore, by means of which an opening cross-section of a metering aperture (28) positioned in a fluid path between a supply line (10) supplied by the pump (6) and a consumer line (14) leading to a consumer (1) can be controlled, wherein said signaling line (18), by connecting it with the supply line (10), is adapted to be impacted with an increased signaling pressure vis-à
- -vis the load pressure of said one consumer (1), characterized in that said signaling line (18) is adapted to be connected with said supply line (10) by shifting the valve gate (52) of said distribution valve (24).
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- 13. An LS distribution valve section for controlling a consumer (1), comprising a valve gate (52) guided in a valve bore by means of which an opening cross-section of a metering aperture (28) can be controlled, said metering aperture (28) being positioned in a fluid path between a pressure connection (P) connected with a supply line (10) and a consumer connection (A) connected with a consumer channel (14), and a signaling line (18) via which a signaling pressure is adapted to be applied to an LS connection, characterized in that said signaling line (18) is adapted to be connected with a fluid path between said pressure connection (P) and said metering aperture (28) by shifting said valve gate (52).
Specification