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    HYDRAULIC PUMP CONTROL DEVICE AND CONTROL METHOD FOR CONSTRUCTION MACHINERY
    111.
    发明公开
    HYDRAULIC PUMP CONTROL DEVICE AND CONTROL METHOD FOR CONSTRUCTION MACHINERY 审中-公开
    STEUERVORRICHTUNGFÜREINE HYDRAULIKPUMPE UND STEUERVERFAHRENFÜRBAUMASCHINEN

    公开(公告)号：EP2503067A2

    公开(公告)日：2012-09-26

    申请号：EP10831746.2

    申请日：2010-11-01

    Applicant: Doosan Infracore Co., Ltd.

    Inventor： BANG, Jae Seok ,  JUNG, Woo Yong ,  SOHN, Won Sun

    IPC: E02F9/22 ,  E02F9/12 ,  F04B27/08

    CPC classification number: F04B49/08 ,  E02F9/123 ,  E02F9/2235 ,  E02F9/2282 ,  E02F9/2292 ,  E02F9/2296 ,  F04B1/324 ,  F04B23/06 ,  F04B49/002 ,  F04B49/065 ,  F04B2201/12051 ,  F04B2205/05 ,  F15B11/17 ,  F15B2211/20546 ,  F15B2211/20576 ,  F15B2211/251 ,  F15B2211/265 ,  F15B2211/6309 ,  F15B2211/6652 ,  F15B2211/6653 ,  F15B2211/7058 ,  F15B2211/7135

    Abstract: The present invention relates to a device for controlling a hydraulic pump of construction machinery. The device has a first pump (10) supplying working fluid through a swing control valve (31) to a swing motor (30), and a second pump (20) supplying working fluid through a work tool control valve (41) to a work tool actuator (40), and includes: a first tilting angle control unit (12) for controlling a discharge flow of the first pump (10) by controlling a tilting angle of the first pump (10) according to an input pump control signal; and a controller (60) deducting a discharge pressure (P2) of the second pump (20) from a discharge pressure (P1) of the first pump (10) to calculate a pump difference pressure (P1-P2), comparing the calculated pump difference pressure (P1-P2) to a reference difference pressure and, when the calculated pump difference pressure (P1-P2) is greater than the reference difference pressure, outputting the pump control signal to the first tilting angle control unit (12) to make the discharge pressure (P1) of the first pump (10) equal to or less than a first reference pressure that is less than or equal to a swing relief pressure.

    Abstract translation: 本发明涉及一种用于控制工程机械的液压泵的装置。 该装置具有通过摆动控制阀（31）向回转马达（30）供给工作流体的第一泵（10）和通过工作工具控制阀（41）将工作流体供给工作的第二泵（20） 工具致动器（40），并且包括：第一倾斜角度控制单元（12），用于通过根据输入泵控制信号控制第一泵（10）的倾斜角度来控制第一泵（10）的排出流量; 以及从所述第一泵（10）的排出压力（P1）减去所述第二泵（20）的排出压力（P2）的控制器（60），以计算泵差压（P1-P2），将所计算的泵 将差压（P1-P2）设定为基准差压，并且当所计算的泵差压（P1-P2）大于基准差压时，将泵控制信号输出到第一倾斜角控制单元（12） 第一泵（10）的排出压力（P1）等于或小于第一基准压力小于或等于摆动释放压力。

    HYDRAULISCHES SYSTEM MIT EINER VERSTELLBAREN HYDROSTATISCHEN MASCHINE
    112.
    发明公开
    HYDRAULISCHES SYSTEM MIT EINER VERSTELLBAREN HYDROSTATISCHEN MASCHINE 有权
    具有可调水压机液压系统

    公开(公告)号：EP2179176A1

    公开(公告)日：2010-04-28

    申请号：EP08801632.4

    申请日：2008-08-20

    Applicant: Robert Bosch GmbH

    Inventor： KREBS, Clemens ,  NAFZ, Timo

    IPC: F04B1/32 ,  F04B49/00

    CPC classification number: F04B1/324 ,  F04B1/2014 ,  F04B49/002 ,  F04B2201/12041 ,  F04B2201/12051

    Abstract: The invention relates to a hydraulic system with an adjustable hydrostatic machine (2) having an adjustment mechanism. The adjustment mechanism interacts with an actuating device which has at least one actuating piston (8) delimiting an actuating pressure space. The system has a regulating valve (16) with which, for the displacement of the actuating piston (8) and therefore for the actuation of the adjustment device, the supply and removal of pressure medium into and from the actuating pressure chamber (12) can be controlled, wherein the regulating valve (16) has a valve piston which is subjected to a force of a feedback spring, which force is dependent on the position of the adjustment mechanism. The valve piston is additionally subjected to a counterforce acting counter to the force of the feedback spring, and an actuating means (24) is provided, with which the valve piston can be subjected to a control force acting in the same direction as the counterforce or to a control force acting counter to the counterforce.

    AXIALKOLBENMASCHINE IN SCHRÄGSCHEIBENBAUWEISE MIT EINER STELLVORRICHTUNG
    113.
    发明公开
    AXIALKOLBENMASCHINE IN SCHRÄGSCHEIBENBAUWEISE MIT EINER STELLVORRICHTUNG 有权
    一个停车场DEVICE轴向活塞旋转斜盘结构

    公开(公告)号：EP2179175A1

    公开(公告)日：2010-04-28

    申请号：EP08801631.6

    申请日：2008-08-20

    Applicant: Robert Bosch GmbH

    Inventor： DREHER, Herbert ,  KREBS, Clemens ,  NAFZ, Timo

    IPC: F04B1/32 ,  F04B1/20 ,  F04B49/00

    CPC classification number: F04B1/324 ,  F04B1/2014 ,  F04B49/002 ,  F04B2201/12041 ,  F04B2201/12051

    Abstract: The invention relates to an axial piston machine in a swash-plate construction with an actuating device. The actuating device comprises a actuating piston (3) and a mating piston (4). The actuating piston (3) and the mating piston (4) are connected to the swash plate (2) each with the first end thereof and can be applied with the second end thereof with a force acting in the direction of the first end. For resetting the swash plate (2) in the direction of a resting position, an elastic element (10, 11) is provided on the actuating piston (3) and on the mating piston (4), which is supported on a spring bearing (12, 17) arranged on the first side facing the swash plate (2) of the actuating piston (3) or of the mating piston (4). In the other direction, the elastic element (10, 11) is supported on a second spring bearing (13, 18), arranged on the end facing away from the swash plate (2) of the actuating piston (3) or of the mating piston (4). When the swash plate (2) is deflected from the resting position, the second spring bearing (13, 18) of the actuating piston (3) or of the mating piston (4) is supported on a counter bearing on the housing side. The second spring bearing (13, 18) of the respective other actuating bearing (3) or mating bearing (4) is supported on a counter bearing on the piston side.

    HYDRAULIC DRIVING UNIT FOR WORKING MACHINE, AND METHOD OF HYDRAULIC DRIVE
    114.
    发明公开
    HYDRAULIC DRIVING UNIT FOR WORKING MACHINE, AND METHOD OF HYDRAULIC DRIVE 有权
    水E E IT IT IT ER ER EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN

    公开(公告)号：EP1398512A1

    公开(公告)日：2004-03-17

    申请号：EP02738772.9

    申请日：2002-06-20

    Applicant: HITACHI CONSTRUCTION MACHINERY CO., LTD.

    Inventor： SHIMOMURA, Hirokazu ,  YASUDA, Tomohiko

    IPC: F15B11/00 ,  F04B49/06

    CPC classification number: F15B11/165 ,  F04B49/065 ,  F04B49/08 ,  F04B2201/12041 ,  F04B2201/12051 ,  F04B2203/06 ,  F04B2203/0603 ,  F04B2205/05 ,  F04B2205/09 ,  F15B2211/20523 ,  F15B2211/20546 ,  F15B2211/255 ,  F15B2211/30525 ,  F15B2211/3056 ,  F15B2211/3116 ,  F15B2211/31576 ,  F15B2211/50536 ,  F15B2211/6309 ,  F15B2211/6316 ,  F15B2211/6333 ,  F15B2211/6355 ,  F15B2211/6651 ,  F15B2211/6652 ,  F15B2211/71

    Abstract: An fuel injection control unit (an electronic governor 12 and a controller 13) for an engine 1 is capable of performing control in a governor region based on an isochronous characteristic. A working machine controller 18 receives a delivery pressure signal P and controls a regulator 16 such that, when the delivery pressure of a hydraulic pump exceeds a predetermined pressure P1, the displacement of the hydraulic pump does not exceed a value decided in accordance with a preset pump absorption torque curve 20. Also, the working machine controller 18 controls the regulator 16 such that, when the delivery pressure of the hydraulic pump 2 is not higher than the predetermined pressure P1, the displacement of the hydraulic pump is increased as the delivery pressure of the hydraulic pump lowers from the predetermined pressure P1. As a result, even when the governor region is controlled based on the isochronous characteristic, the delivery flow rate of the hydraulic pump is increased as an engine load reduces.

    Abstract translation: 用于发动机的燃料喷射控制装置（电子调速器和控制器）能够将调速器区域控制为等时特性。 工作机械控制器接收输送压力信号并以这样的方式控制调节器：当液压泵的输送压力超过预定压力时，液压泵的排量不会超过。 一种能够在用户终端之间传递位置数据并进行网络资源传播的系统，以及以方便用户的方式利用位置数据。 诸如蜂窝电话，个人数字助理（PDA），个人计算机和其他交互设备的用户终端可以是能够向网络资源发送服务请求数据的位置使能或常规用户终端。 在启用位置的终端的情况下，终端可以存储多个位置数据项目，包括空间坐标数据，用于传播给其他用户终端和/或传输到网络资源。 位置数据的项目可以从用于感测移动终端的位置的系统导出，包括诸如全球定位系统（GPS）或基于网络或辅助定位系统的卫星基站定位系统。 位置数据的其他来源包括用户在终端处的其他用户终端，网络资源或手动提供位置数据。 在替代实施例中，用户选择的位置数据被存储在网络侧存储器中，供用户关于一系列远程进程使用，并且使其可被其他网络资源或用户范围访问。 来自网络侧存储的项目可以被发送到其他用于关于服务请求和其他过程的使用。

    Discharge flow control system and method in hydraulic pump
    116.
    发明公开
    Discharge flow control system and method in hydraulic pump 失效
    Verfahren und Vorrichtung zur Durchflusssteuerung einer Hydraulikpumpe。

    公开(公告)号：EP0632355A2

    公开(公告)日：1995-01-04

    申请号：EP94106424.8

    申请日：1994-04-25

    Applicant: SAMSUNG HEAVY INDUSTRY CO., LTD

    Inventor： Jin-Han, Lee

    IPC: G05D7/06 ,  F04B1/26 ,  E02F9/22

    CPC classification number: G05D7/0682 ,  F04B49/065 ,  F04B2201/12051 ,  F04B2203/0605 ,  F04B2205/05 ,  F04B2207/00 ,  F15B2211/20546 ,  F15B2211/26 ,  F15B2211/265 ,  F15B2211/633

    Abstract: A discharge flow control system and method of a hydraulic pump driven by an engine for the minimization of the difference between a discharge amount of flow in the pump and total amount of operating oil necessary to operate each actuator in hydraulic equipment. The control system is provided with a detector which detects the number of rotation of the engine, generates equal number of pulses to the number of rotation, a detector which detects the tilt angle of a swash plate of the pump, a detector which detects the operating displacement of the actuator, a detector which detects the load pressure acting on the pump, and a controll unit which controls a target discharge flow amount of the pump which is suitable for performing a predetermined work based on the number of rotation, the tilt angle, the displacement and the load pressure.

    Abstract translation: 一种由发动机驱动的液压泵的排出流量控制系统和方法，用于最小化泵中的排出量与在液压设备中操作每个致动器所需的操作油的总量之间的差异。 该控制系统设置有检测发动机的转动次数的检测器，产生与旋转次数相等数量的脉冲，检测泵的斜板倾斜角的检测器，检测该操作的检测器 执行器的位移，检测作用在泵上的负载压力的检测器，以及控制单元，其基于旋转次数，倾斜角度等控制适于执行预定工作的泵的目标排出流量， 位移和负载压力。

    Piston pump servo control
    117.
    发明公开
    Piston pump servo control 失效
    活塞泵伺服控制

    公开(公告)号：EP0129670A3

    公开(公告)日：1985-01-30

    申请号：EP84104751

    申请日：1984-04-27

    Applicant: GENERAL SIGNAL CORPORATION

    Inventor： Davis, Duane J.

    IPC: F04B01/26

    CPC classification number: F04B1/324 ,  F04B2201/12051 ,  Y10S60/911

    Abstract: An electronic closed loop piston pump servo control system including a swash plate within the pump housing which controls pump output as a function of its position about a rotational axis, means for altering the position of said swash plate, means for producing electric signals representative of the desired and actual swash plate angular positions and means for comparing these signals and producing a control or error signal to the means for altering the swash plate position as a function of these signal differences. The means for producing electric signals representative of the actual swash plate position includes a rotary potentiometer mounted in the pump housing and directly connected to the swash plate along a common axis of rotation. This potentiometer produces a d.c. signal indicating the angular position of the swash plate on this common axis. Afailsafe circuit is provided in the comparator means which prevents the error signal from affecting the swash plate angular position if the feedback signal falls below a predetermined reference level. The potentiometer rotates through h a relatively small arc such that when the sliding resistive contacts thereon are worn, the potentiometer contacts may be rotated to respond along a fresh arc.

    Abstract translation: 一种电子闭环活塞泵伺服控制系统，包括在泵壳体内的斜盘，其根据其围绕旋转轴线的位置控制泵输出，用于改变所述斜盘的位置的装置，用于产生代表 期望的和实际的斜盘角度位置，以及用于将这些信号进行比较并产生控制或误差信号到用于根据这些信号差异改变斜盘位置的装置的装置。 用于产生表示实际斜盘位置的电信号的装置包括安装在泵壳体中的旋转电位计，并沿着公共旋转轴直接连接到斜盘。 该电位器产生直流 指示旋转斜盘在该公共轴上的角位置的信号。 在比较器装置中提供故障保护电路，如果反馈信号低于预定参考电平，则防止误差信号影响斜盘角位置。 电位器旋转通过较小的电弧，使得当其上的滑动电阻接触被磨损时，电位器触点可以旋转以沿着新的电弧响应。

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