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公开(公告)号：US3589130A
公开(公告)日：1971-06-29
申请号：US3589130D
申请日：1969-10-30
Applicant: BOSCH GMBH ROBERT
Inventor： FLASCHAR HEINZ , WEIGERT WILHELM , WERNER WALTER , KRAMER MANFRED
CPC classification number: F15B21/08 , Y10S60/911
Abstract: An arrangement for controlling remotely hydraulic valves located between a variable displacement pump and a load supplied from the pump. The valve has a control slider the position of which is indicated through a signal generator on the slider. Control levers are also coupled to the slider and the position of these levers is indicated through another signal generator coupled to the levers. A control unit connected to the signal generators, compares their signal outputs and actuates electrohydraulic positioning means for controlling the pump flow as a function of the deflection of the control levers.
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2.发明授权
公开(公告)号：US3613509A
公开(公告)日：1971-10-19
申请号：US3613509D
申请日：1969-10-30
Applicant: BOSCH GMBH ROBERT
Inventor： FLASCHAR HEINZ , WEIGERT WILHELM , WERNER WALTER , KRAMER MANFRED
IPC: F15B21/08 , F15B13/044
CPC classification number: F15B21/08 , Y10T137/87209
Abstract: An arrangement for controlling directional valves electrohydraulically. The valve is connected between a constant pump and a load which is actuated through fluid under pressure from the pump. The directional valve has a control slide to which a signal transducer is secured to give a signal indicative of the position of the control slide. Control levers are also arranged with the control slide and have signal transducers for indicating the deflection of the control lever from a neutral position. A control circuit is connected to the signal transducers for comparing their signal outputs, and to actuate electrohydraulic positioning member on the control slide for controlling the position of the control slide dependent upon the position of the control lever. A switching valve controls the neutral fluid flow from the pump to the load as a function of the position of the control lever.
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公开(公告)号：US3593523A
公开(公告)日：1971-07-20
申请号：US3593523D
申请日：1969-10-30
Applicant: BOSCH GMBH ROBERT
Inventor： FLASCHAR HENIZ , WERNER WALTER , WEIGERT WILHELM , KRAMER MANFRED
CPC classification number: F15B21/08 , Y10S60/911
Abstract: An arrangement for the electrohydraulic remote control of directional valve in which a variable displacement pump provides fluid under pressure to a load or a hydraulically operated device. Signal transducers are arranged at the pump and the load to provide electrical signals as a function of the pressures prevailing at the pump and the load. An electrical control unit compares the signals from the transducers, and is operatively connected to an electrohydraulic actuated positioning means in the pump when the signals correspond. The regulation is such that the fluid flow from the pump is controlled as a function of the load magnitude.
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