公开(公告)号：US3683748A

公开(公告)日：1972-08-15

申请号：US3683748D

申请日：1970-10-09

Applicant: BOSCH GMBH ROBERT

Inventor： MAHL WILLY ,  WERNER WALTER

IPC: A01D57/04 ,  F15B15/17

CPC classification number: A01D57/04 ,  Y10T137/86702

Abstract: A piston is slidably accommodated in a cylinder and subdivides the interior thereof into a first and a second chamber located at opposite axial sides of the piston. A supply conduit communicates with the first cylinder chamber. A source of pressurized fluid includes a pressure conduit and a fluid reservoir includes a return conduit. A control unit is connected with all of these conduits and includes a control member slidable between a neutral position in which it disconnects the supply conduit from the pressure conduit and from the return flow conduit, a first operating position in which it connects the supply conduit with the pressure conduit while disconnecting it from the return flow conduit, and a second operating position in which it connects the supply conduit with both the pressure conduit and the return flow conduit. A throttling passage connects the cylinder chambers with one another.

Abstract translation: 活塞可滑动地容纳在气缸中并将其内部细分成位于活塞的相对轴向侧的第一和第二腔室。 供应管道与第一缸室连通。 加压流体源包括压力导管，流体储存器包括回流导管。 控制单元与所有这些管道连接，并且包括可在中间位置之间滑动的控制构件，在该中间位置，使所述供应管道与所述压力导管和所述回流管路断开;第一操作位置，其将所述供应管道与 压力导管同时将其从回流导管断开，以及第二操作位置，在该第二操作位置中，其将供应管道与压力导管和回流管道连接。 节流通道将气缸室彼此连接。

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

IPC: F15B21/08 ,  F15B15/18

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.

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

IPC: F15B21/08 ,  F15B11/16 ,  F15B15/18

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.

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.