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公开(公告)号：EP0985093A1
公开(公告)日：2000-03-15
申请号：EP98913514.0
申请日：1998-02-19
Applicant: Mannesmann Rexroth AG
Inventor： EISENBACHER, Egon , PAWELLEK, Franz , SCHNEIDER, Johann
CPC classification number: F04B1/0421 , F04B1/0452 , F04B1/053
Abstract: The invention relates to a radial piston pump, of which at least one piston is housed in the pump casing, while the cylinder is moved by an eccentric shaft for fluid admission. This design principle enables coaxial arrangement of the intake and oulet valves at short distance of the crank housing, resulting in the flow of the fuel supply circuit being reduced to a minimum. Such a system is particularly suitable for high pressure gasoline pumps.
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公开(公告)号：EP0965140A1
公开(公告)日：1999-12-22
申请号：EP98913531.0
申请日：1998-02-27
Applicant: Mannesmann Rexroth AG
Inventor： KISON, Thomas , MEISSELBACH, Alexander
CPC classification number: H02M3/158 , H01H47/325 , H02M2003/1555
Abstract: The invention concerns a current-controlled output stage for electromagnetic actuators with a current controller and a power section, said output stage controlling an electric current fed to an inductive load, for example a magnet coil, according to a predetermined desired value. The inductive load (1) is disposed between two electronic switches (2, 3) which are controlled jointly by the current controller (10) at a clocked voltage. The current controller varies the pulse duty factor of the clocked voltage such that the current (i1) flowing via the inductive load equals the predetermined desired value (Uw). Two free-wheeling diodes (5, 6) allow current to flow via the inductive load even during the extinction phase. The current flowing via the inductive load flows via a measuring shunt (4) which is connected on one side to earth. The amount of the voltage dropping at the measuring shunt is used as a controlled variable for the current flowing via the inductive load. Output stages of this type are provided for low-resistance inductive loads. In order to be able to use the same current-controlled output stage for high-resistance inductive loads too, a second measuring shunt (17) is disposed between the earth-side switch (3) and the inductive load (1). When high-resistance inductive loads are operating, the earth-side switch (3) is constantly switched in the conductive state and the voltage (U17) dropping at the second measuring shunt is fed to the actual value input of the current controller (10) as a measure of the current flowing via the inductive load (1). The current-controlled output stage is provided for electromagnetic actuators, in particular for proportional magnets used for controlling valves.
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53.发明公开
公开(公告)号：EP0958455A1
公开(公告)日：1999-11-24
申请号：EP97952950.0
申请日：1997-12-16
Applicant: Mannesmann Rexroth AG
Inventor： HERFS, Werner , MAFFINI, Jacques , WEICKERT, Thomas
IPC: F15B11
CPC classification number: F15B11/163 , F15B11/162 , F15B2211/20553 , F15B2211/30535 , F15B2211/3111 , F15B2211/351 , F15B2211/45 , F15B2211/6051 , F15B2211/6058 , F15B2211/75
Abstract: The invention concerns a hydraulic control circuit in which the pressure medium conveyed by a hydraulic pump of variable delivery (10) is fed, in each case via a metering aperture (17, 31), as a priority to a first hydraulic consumer (14) and only secondly to a second hydraulic consumer (15). It is already prior art to provide a priority valve (45) which comprises a first connection (46) connected to a line section (13) upstream of the metering aperture (17) of the priority hydraulic consumer (14) and a second connection (47) which is connected to the load-indicating line and whose valve member (48) can be acted upon in the opening direction of the connection between the first connection (46) and the second connection (47) by the load pressure of the priority hydraulic consumer (14) and an additional force (51). According to the invention, a priority control system is now produced without additional delivery losses and with sufficient amounts of pressure medium being conveyed in that the valve member (48) of the priority valve (45) can be acted upon in the closure direction of the connection between the first connection (46) and the second connection (47) by a pressure prevailing in a line section (13) upstream of the first metering aperture (17).
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54.发明公开
公开(公告)号：EP0943057A1
公开(公告)日：1999-09-22
申请号：EP97953751.0
申请日：1997-12-06
Applicant: Mannesmann Rexroth AG
Inventor： STELLWAGEN, Armin
CPC classification number: F15B11/05 , F15B13/0402
Abstract: The invention relates to distributing valve for load-independent control of a hydraulic consumer with regard to direction and speed. Similar distributing valves known per se have a control valve (30) which can be axially displaced in a slide bore hole (11) of a valve housing (10). In a neutral position, said control valve (30) blocks off two consumer chambers (13, 15) from a feed chamber (14) and selectably connects one of the two consumer chambers (13, 15) to a feed chamber (14) and the other consumer chamber (15, 13) to a return chamber in two operating positions. In addition, two brake pistons (51, 52) are arranged in two opposite lying receiving areas (33, 34) of the control valve (30). Both pistons can be pressurized in the direction of an enlargement of the opening section of a flow path leading from one consumer chamber (13, 15) to a return chamber (12, 16) via the respective receiving area, said pistons being pressurized in the other consumer chamber (15, 13) in a direction opposite to that of a spring (53) placed in a spring chamber (12). According to the invention, a slide longitudinal bore hole (36) which can be connected to a load indicator channel (22) extends from one pressure chamber (58) on one brake piston (51, 52) to the other pressure chamber (58) on the other brake piston (51, 52), and can be connected, upon displacement of the control valve (30) from the neutral position, to one consumer chamber (13) or another consumer chamber (15) depending on the direction of displacement.
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公开(公告)号：EP0908653A1
公开(公告)日：1999-04-14
申请号：EP98117912.0
申请日：1998-09-22
Applicant: Mannesmann Rexroth AG
Inventor： Krug-Kussius, Karl
IPC: F16K17/10
CPC classification number: F16K17/10 , F15B11/028 , F15B13/0405 , F15B21/047 , F15B2211/20553 , F15B2211/20561 , F15B2211/50527 , F15B2211/50536 , F15B2211/5154 , F15B2211/528 , F15B2211/55 , F15B2211/6355 , F15B2211/7058 , F16H61/4026 , F16H61/4043 , F16K17/105
Abstract: Offenbart ist ein vorgesteuertes Druckbegrenzungsventil, dem eine Wegeventilanordnung zugeordnet ist, über die der Druck im Federraum (66) eines Hauptkolbens (70) des Druckbegrenzungsventils zur Rückseite eines Übersetzerkolbens (120) eines Vorsteuerventils (116) führbar ist, so daß das Hauptventilglied zur Dämpfung eines Druckaufbaus am Eingangsanschluß des Druckbegrenzungsventils weit unterhalb des Maximaldruckes aufsteuerbar ist.
Abstract translation: 预控压力限制阀组件具有主阀单元（70），用于控制初始和另一连接（P，T）之间的通道。 节流钻（78）将第一连接（P）与主阀单元（70）的弹簧区连接。 预调节阀（64）位于弹簧区域和控制连接件（Y）之间，并且预控阀体（116）通过阀弹簧（118）预先抵靠阀座（114）。
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Patent Agency Ranking56.发明授权
公开(公告)号：EP0830221B1
公开(公告)日：1999-02-03
申请号：EP96921949.2
申请日：1996-06-07
Applicant: Mannesmann Rexroth AG
Inventor： BRECKNER, Manfred , KIRMAIR, Peter
CPC classification number: F15B3/00 , B21D26/033 , B30B1/32
Abstract: A hydraulic pressure boosting unit (11) is used in particular in a press operating according to the high inner pressure extrusion process. The hydraulic pressure boosting unit has a docking cylinder (10) with a docking piston that slides in a first cylinder chamber (15) and a docking piston rod (26) secured to the docking piston projects outwards through a housing head (20). The hydraulic pressure boosting unit has a pressure booster (11) with a primary piston (40) located in a second cylinder chamber (16) coaxial to the first cylinder chamber and separated from the first cylinder chamber by a housing bottom (17) and with a secondary piston (41) that plunges into a central axial bore (28) of the docking piston and docking piston rod. In order to generate high forces with the docking cylinder, only one side of the docking piston has a piston rod, namely the docking piston rod.
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公开(公告)号：EP0883559A2
公开(公告)日：1998-12-16
申请号：EP97915272.0
申请日：1997-02-01
Applicant: Mannesmann Rexroth AG
Abstract: A simply-designed, multi-purpose transport module with which heavy loads can be moved over the ground has the following features: a frame, on which the load is laid, is positioned on the floor. A support is positioned on the floor. The ground loading pressure of the frame, on an increase of the ground pressure loading of the support, and the ground pressure loading of the support, on an increase of the ground pressure loading of the frame, can be reduced to below the unloaded weight through an actuator of the frame or of the support. The frame and the support have a first pair of inclined paths through which the frame can be supported on the support and the frame is displaceable horizontally with respect to the support on achieving a sufficient reduction of its ground pressure loading. The frame and the support have a second pair of inclined paths through which the support can be supported on the frame and the support is displaceable horizontally with respect to the frame on achieving a sufficient reduction of its ground pressure loading. A load can be moved forward in a step-wise manner with such a transport module.
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公开(公告)号：EP0824436A1
公开(公告)日：1998-02-25
申请号：EP96907491.0
申请日：1996-03-16
Applicant: Mannesmann Rexroth AG
Inventor： DANTLGRABER, Jörg
IPC: B61F5
Abstract: The invention is based on a support for a carriage body (11) on a chassis, especially a chassis (10) of a rail vehicle, with a rocker post (12) fitted between the chassis (10) and the carriage body (11) which is supported via a lower link on the chassis (10) and on which the carriage body (11) is supported via an upper link in the form of a curved contact joint. To reduce wear on the upper link, the rocker post (12) comprises a first support component (13) and a second support component (14) arranged between the first component (13) and the carriage body (11). In addition, a bearing surface of the carriage body (11) lies on a first bearing surface (27) of the second support component (14) and a second bearing surface (28) of the second support component (14) lies on a bearing surface (32) of the first component (13). At least one of the two contacting bearing surfaces (27, 30, 28, 32) is cylindrical and the support between a pair of bearing surfaces is linear. Finally, the generatrices of the at least one cylindrical bearing surface (32) between the first (13) and second (14) support components run secured against rotation perpendicularly to the generatrices of the at least one cylindrical bearing surface (27) between the second support component (14) and the carriage body (11).
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公开(公告)号：EP0817918A1
公开(公告)日：1998-01-14
申请号：EP96905853.0
申请日：1996-03-02
Applicant: Mannesmann Rexroth AG
Inventor： BIENER, Rainer , RAUSCHER, Richard , RÜB, Winfried
IPC: F15B13
CPC classification number: F15B13/0435 , Y10T29/49417 , Y10T137/86614 , Y10T137/87241
Abstract: In a hydraulically operable distributing valve, the control piston of which is controlled by electrically operable pre-control valves of small rated widths integrated into the distributing valve housing as built-in units in which the hydraulic connection between the pre-control valves and the distributing valve is via channels running in the distributing valve housing, the channels in the distributing valve housing, especially for large series production, take the form of cast-in channels and the connections of the pre-control valves are suited to the size and arrangement of said channels.
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60.发明公开
公开(公告)号：EP1223486A2
公开(公告)日：2002-07-17
申请号：EP01129462.6
申请日：2001-12-11
Applicant: Mannesmann Rexroth AG
Inventor： Antoszkiewicz, Peter
CPC classification number: B29C45/681 , B29C45/76 , B29C45/82 , B29C2945/76083 , B29C2945/76117 , B29C2945/7623 , B29C2945/76237 , F15B9/09 , G05B19/23 , G05B19/46 , G05B2219/41309 , G05B2219/42041
Abstract: Es wird ein Verfahren zur Regelung der Bewegung einer Masse (13) angegeben, die von einem druckmittelbeaufschlagten hydraulischen Zylinder (11) über ein Getriebe (12) mit hubabhängiger Übersetzung, insbesondere eine Kniehebelanordnung, angetrieben ist. Die Eigenfrequenz derartiger Systemen ist sehr stark von der Position (xm) der Masse abhängig. Die Parameter der Regeleinrichtung müssen so eingestellt werden, daß auch bei der höchsten Eigenfrequenz keine Instabilität auftritt. Dies führt aber zu einem spürbaren Dynamikverlust in Bereichen mit niedriger Eigenfrequenz. Um die Parameter optimal für die Bereiche mit niedriger Eigenfrequenz einstellen zu können, ohne daß in Bereichen hoher Eigenfrequenz Instabilitäten auftreten, ist dem die Druckmittelzufuhr zu dem Zylinder steuernden Signal ein Beschleunigungssignal als Hilfsgröße (yn) überlagert, das in Abhängigkeit von der Position (xm) der Masse derart gewichtet wird, daß die Wirkung der Hilfsgröße auf den Regelvorgang in Bereichen hoher Eigenfrequenz des aus dem Zylinder, dem Getriebe und der Masse gebildeten Systems verringert wird.
Das Verfahren kommt vorzugsweise zur Regelung der Bewegung von Kniehebelanordnungen, z. B. in Kunststoffmaschinen oder in Pressen, zum Einsatz.Abstract translation: 该方法涉及一个活塞杆（10）位置调节器controling对于汽缸（11）和叠加依赖于调节器输出活塞杆加速度辅助参数的输送液压介质。 用作辅助参数的加速度信号被加权雅丁到质量块的位置（13）象在高固有频率范围上调节过程的作用是通过由气缸构成的系统，变速器（12）和移动降低 质量。
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