Hydraulic control arrangment
AssigneeBosch Rexroth AG
InventorWolfgang Kauss
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AssigneeBosch Rexroth AG
InventorWolfgang Kauss
Estimating the term…
A hydraulic control arrangement is disclosed for the control of a consumer, comprising at least one mechanically operated continuously adjustable distribution valve with a subsequent LUDV pressure compensator down the line. In order to lock the consumer the control arrangement is provided with a spring holding the pressure compensator piston in a closed position. Furthermore, the LS line carrying the highest load pressure of all consumers is connected to a reservoir by means of a flow regulator, wherein the pump control may also be relieved by the flow regulator in the sense of a reduction of the pumped volume. According to the invention, the LUDV pressure compensator is pressure-compensated by means of a nozzle through which a connection between the LS line and a portion of the pressure medium flow path downstream of the pump and upstream of the outlet of the pressure compensator is generated. Said nozzle is preferably integrated in the pressure compensator piston.
A hydraulic control arrangement for the control of a consumer, comprising at least one mechanically operated continuously adjustable distribution valve with a subsequent pressure compensator down the line to which the load pressure of the corresponding consumer can be applied in the opening direction and the highest load pressure of all controlled consumers prevailing in a rear control chamber can be applied in the closing direction, wherein said load pressure can be carried via an LS line to a pump regulator of a pump, and comprising a safety valve upon operation of which the pressure compensator can be brought into a closing position for closing the connection to the consumer, characterized in that a pressure compensator piston can be held in its closed position by a spring, the LS line is connected to the reservoir by means of a flow control valve, the safety valve is arranged in the LS line between the flow regulator and the pressure compensator and a pressure effective upon change-over of the switch valve in the control chamber is tapped off by means of a nozzle by a pressure medium flow portion downstream of the pump and upstream of an outlet of the pressure compensator.
Dependencies are inferred from the claim text.