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    DICKSTOFFPUMPE MIT FÖRDERMENGENSTEUERUNG
    63.
    发明公开
    DICKSTOFFPUMPE MIT FÖRDERMENGENSTEUERUNG 有权
    流量控制DICK燃油泵

    公开(公告)号：EP1436507A1

    公开(公告)日：2004-07-14

    申请号：EP02772362.6

    申请日：2002-10-04

    Applicant: PUTZMEISTER AKTIENGESELLSCHAFT

    Inventor： BENCKERT, Hartmut ,  VON BÄUMEN, Paul ,  PETZOLD, Wolf-Michael

    IPC: F04B49/06 ,  F04B15/02

    CPC classification number: F04B49/065 ,  F04B15/02 ,  F04B2201/1204 ,  F04B2201/1205 ,  F04B2203/0209 ,  F04B2203/0605 ,  Y10S417/90

    Abstract: The invention relates to a thick matter pump comprising a transport capacity control system. Said thick matter pump comprises a driving motor (50) which is preferably embodied as an internal combustion engine, a hydraulic pump (6) which is preferably embodied as a reversible pump, has a variable displacement volume (V) and can be coupled to the driving motor, and two hydraulic cylinders (5, 5') which are connected to the hydraulic pump (6), can be controlled by the same in a push-pull manner, and are each coupled to a transport cylinder (7, 7') for transporting the thick matter. A regulator for regulating the rotational speed (N) is associated with the driving motor (50), and a regulating element (18, 20) for regulating the displacement volume (V) is associated with the hydraulic pump (6). A control unit (54) is also provided for regulating the rotational speed (N) of the motor and the displacement volume (V). According to the invention, said control unit (54) comprises a regulating body (56) for regulating the thick matter transport capacity (F) of the transport cylinders (7, 7'), and an electronic control system (108) which reacts to the position of the regulating body (56) and allocates a nominal value to the rotational speed regulator and to the displacement volume actuator (20), in a software-assisted manner. These measures enable the operational comfort of the thick matter pump to be improved, and the fuel requirements, noise emission and waste gas emission to be reduced during practical use.

    ELEKTROHYDRAULISCH VERSTELLBARE PUMPE
    64.
    发明公开
    ELEKTROHYDRAULISCH VERSTELLBARE PUMPE 失效
    电动可调液压泵

    公开(公告)号：EP0832360A1

    公开(公告)日：1998-04-01

    申请号：EP95913049.0

    申请日：1995-03-23

    Applicant: ROBERT BOSCH GMBH

    Inventor： ROBELLER, Walter ,  PFUHL, Berthold ,  LEUTNER, Volkmar ,  BERTSCH, Dieter ,  ZUMBRAEGEL, Joachim

    IPC: F04B11 ,  F04B49

    CPC classification number: F04B49/06 ,  F04B11/00 ,  F04B49/08 ,  F04B2201/0804 ,  F04B2201/1205 ,  F04B2205/16

    Abstract: A variable displacement electro-hydraulic pump is operated in a closed loop position control circuit. The adjusting pistons at the adjusting member of the pump are controlled for that purpose by a control valve (20) that in turn is driven by a control amplifier (28). The adjustment path of the control valve and the adjustment path of the adjusting member of the pump are supplied as real values to this control amplifier (28). In addition, an adjusting signal that depends on the angle of rotation of the pump is generated at the control amplifier. This additional pulse-shaped adjusting signal allows the oscillating effects of the driving unit forces on the hydraulic fixation, as well as the resulting noises to be compensated.

    VORRICHTUNG ZUR SUMMENLEISTUNGSREGELUNG VON WENIGSTENS ZWEI HYDROSTATISCHEN VERSTELLPUMPEN
    65.
    发明公开
    VORRICHTUNG ZUR SUMMENLEISTUNGSREGELUNG VON WENIGSTENS ZWEI HYDROSTATISCHEN VERSTELLPUMPEN 失效
    设备技术总功率控制至少两个静水变量

    公开(公告)号：EP0745189A1

    公开(公告)日：1996-12-04

    申请号：EP95908254.0

    申请日：1995-02-02

    Applicant: BRUENINGHAUS HYDROMATIK GMBH

    Inventor： ERKKILAE, Mikko ,  VOGL, Karl-Heinz ,  FERTIG, Günter ,  ZU HOHENLOHE, Felix

    IPC: F04B49

    CPC classification number: F04B49/065 ,  F04B49/08 ,  F04B2201/1205

    Abstract: A device is disclosed for regulating the total output of several variable displacement pumps (1, 2) provided each with a regulating valve (18) for regulating the displaced volume. A control pressure that corresponds to the working pressure of the variable displacement pumps is applied to the regulating valves (18) against a counterpressure. The regulating valve (18) responds when the control pressure exceeds the counterpressure, regulating the variable displacement pump according to a characteristic curve (KL) of constant torque. In order to adjust the individual driving torques in a simple manner and to prevent the torques from exceeding the set values, an electronic control unit (16) is connected to the measurement sensor (25) that senses the volumes displaced by the variable displacement pumps. The electronic control unit (16) stores the sum of the set values of the counterpressures and the torque characteristic curves (KL) of the variable displacement pumps and has a set value regulator (27) that distributes the set value sum. The electronic control unit (16) further sets said torque characteristic curves (KL1, KL2), transmits control signals to the associated control element (24) that generates counterpressures corresponding to predetermined counterpressure set values, senses the working pressure (p) corresponding to the displaced volume (V) on the torque characteristic curve (KL1, KL2) when the regulating valves respond, converts said working pressure (p) into a control signal and transmits said signal to the control element that generates a counterpressure.

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