HYDRAULIC CONTROL SYSTEM IMPLEMENTING PUMP TORQUE LIMITING
    71.
    发明申请
    HYDRAULIC CONTROL SYSTEM IMPLEMENTING PUMP TORQUE LIMITING 审中-公开
    液压控制系统实现泵转矩限制

    公开(公告)号:WO2012118773A3

    公开(公告)日:2012-11-22

    申请号:PCT/US2012026841

    申请日:2012-02-28

    Abstract: A hydraulic control system (48) is disclosed. The hydraulic control system may have a pump (52), a plurality of actuators (20, 26), and a plurality of valve arrangements (54, 56) configured to meter pressurized. The hydraulic control system may also have at least one operator input device (98) configured to generate signals indicative of desired velocities of the plurality of actuators, and a controller (58). The controller may be configured to receive a pump torque limit, determine a maximum pump flow capacity, and determine desired flow rates for each of the plurality of valve arrangements based on the signals. The controller may also be configured to make a first reduction of the desired flow rates based on the maximum pump flow capacity, to make a second reduction of the desired flow rates based on the pump torque limit, and to command the plurality of valve arrangements to meter the desired flow rates after the second reduction.

    Abstract translation: 公开了一种液压控制系统(48)。 该液压控制系统可以具有泵(52),多个致动器(20,26)以及被配置为计量加压的多个阀装置(54,56)。 液压控制系统还可具有至少一个配置成产生指示多个致动器的期望速度的信号的操作者输入装置(98)和控制器(58)。 控制器可以被配置成接收泵转矩极限,确定最大泵流量容量,并基于信号确定多个阀装置中的每一个的期望流量。 控制器还可以被配置为基于最大泵流量容量进行期望流量的第一减少,基于泵转矩极限进行期望流量的第二减少,并且命令多个阀装置至 在第二次还原后计量所需的流量。

    MULTIPLE FUNCTION HYDRAULIC SYSTEM WITH A VARIABLE DISPLACEMENT PUMP AND A HYDROSTATIC PUMP-MOTOR
    72.
    发明申请
    MULTIPLE FUNCTION HYDRAULIC SYSTEM WITH A VARIABLE DISPLACEMENT PUMP AND A HYDROSTATIC PUMP-MOTOR 审中-公开
    具有可变位移泵和静压泵电机的多功能液压系统

    公开(公告)号:WO2012125792A2

    公开(公告)日:2012-09-20

    申请号:PCT/US2012029175

    申请日:2012-03-15

    Abstract: A hydraulic system includes a first pump and a plurality of valves that control fluid flow from the first pump to several actuators. Variable source orifices in the control valves are connected in parallel between the first pump and a node, and variable bypass orifices in the control valves are connected in series between the node and a tank. Pressure at the node controls displacement of the first pump. Each control valve also has a metering orifice for varying fluid flow between the node and one of the actuators. A hydrostatic pump-motor, coupled between two ports of a given actuator, is driven in a motoring mode by fluid exiting one of those ports. In a pumping mode, the hydrostatic pump-motor forces lower pressure fluid exhausting from one port into the other port of the given actuator.

    Abstract translation: 液压系统包括第一泵和多个阀,其控制从第一泵到多个致动器的流体流动。 控制阀中的可变源孔并联连接在第一泵和节点之间,并且控制阀中的可变旁路孔串联连接在节点和罐之间。 节点处的压力控制第一泵的位移。 每个控制阀还具有用于在节点和致动器中的一个之间改变流体流动的计量孔口。 耦合在给定致动器的两个端口之间的静液压泵电动机通过流出其中一个端口的流体以电动模式被驱动。 在泵送模式中,静液压泵马达将较低压力的流体从一个端口排出到给定致动器的另一个端口。

    ELECTRO-HYDRAULIC SYSTEM FOR CONTROLLING MULTIPLE FUNCTIONS
    73.
    发明申请
    ELECTRO-HYDRAULIC SYSTEM FOR CONTROLLING MULTIPLE FUNCTIONS 审中-公开
    用于控制多功能的电液系统

    公开(公告)号:WO2012125320A1

    公开(公告)日:2012-09-20

    申请号:PCT/US2012/027679

    申请日:2012-03-05

    Abstract: Electro-hydraulic systems (10, 110, 210, 310, 410, 510, 610 and 710) control multiple hydraulic motors without objectionable erratic or jerky motion. The system (10) includes a variable displacement pump (20), an electronic controller (30), a direction control valve (40), first and second pump outlet valves (60) and (70), and a fluid reservoir (80). The pump (20) does not require or use a load feedback signal to control pump output. The controller (30) provides electric control signals to a pump control (21) and to individual hydraulic motors (51). A load sense circuit (46) resolves a highest load sense pressure Ps, which is communicated to the first and second pump outlet valves (60) and (70). The first pump outlet valve (60) limits the maximum load sense pressure. The second pump outlet valve (70) limits the maximum pressure differential between the pump outlet and the load sense pressure.

    Abstract translation: 电动液压系统(10,110,210,310,410,510,610和710)控制多个液压马达,而不会产生不必要的不​​稳定或不稳定的运动。 系统(10)包括可变排量泵(20),电子控制器(30),方向控制阀(40),第一和第二泵出口阀(60)和(70) 。 泵(20)不需要或使用负载反馈信号来控制泵输出。 控制器(30)向泵控制器(21)和单独的液压马达(51)提供电控制信号。 负载检测电路(46)确定了传送到第一和第二泵出口阀(60)和(70)的最高负载检测压力Ps。 第一泵出口阀(60)限制最大负载感测压力。 第二泵出口阀(70)限制泵出口和负载感测压力之间的最大压差。

    A METHOD FOR CONTROLLING A HYDRAULIC SYSTEM OF A WORKING MACHINE
    74.
    发明申请
    A METHOD FOR CONTROLLING A HYDRAULIC SYSTEM OF A WORKING MACHINE 审中-公开
    一种控制工作机械液压系统的方法

    公开(公告)号:WO2012060742A1

    公开(公告)日:2012-05-10

    申请号:PCT/SE2010/000264

    申请日:2010-11-01

    Abstract: The invention relates to a method for controlling a hydraulic system (10) of a working machine (1). The hydraulic system comprises a hydraulic machine (13) for providing hydraulic fluid to one or more actuators (11, 12) of the working machine. The method comprises the steps of receiving a signal requesting a pump pressure from the hydraulic machine (13) based on the load pressure of a first actuator (11) of said one or more actuators which first actuator has the highest load pressure of said one or more actuators, discriminating the pressure request from the first actuator (11 ) provided that the first actuator is stalled due to overload or geometrical limitations, and controlling the hydraulic machine (13) to provide a pump pressure based on the load pressure of a second actuator (12) of said one or more actuators which second actuator is in operation and has the second highest load pressure of said one or more actuators, or, if no actuator in addition to the first actuator is present and in operation, controlling the hydraulic machine to provide a predetermined idle pump pressure.

    Abstract translation: 本发明涉及一种用于控制工作机(1)的液压系统(10)的方法。 液压系统包括用于向工作机器的一个或多个致动器(11,12)提供液压流体的液压机(13)。 该方法包括以下步骤:基于所述一个或多个致动器的第一致动器(11)的负载压力接收来自液压机器(13)的泵压力的信号,第一致动器具有所述一个或多个致动器的最高负载压力, 更多的致动器,鉴于来自第一致动器(11)的压力要求,只要第一致动器由于过载或几何限制而停转,并且控制液压机器(13)基于第二致动器(11)的负载压力提供泵压力 (12),所述一个或多个致动器第二致动器正在运行并具有所述一个或多个致动器的第二最高负载压力,或者如果除了第一致动器之外没有致动器,并且在运行中,控制液压机 以提供预定的空转泵压力。

    건설기계용 선회유량 제어시스템 및 그 제어방법
    75.
    发明申请
    건설기계용 선회유량 제어시스템 및 그 제어방법 审中-公开
    用于建筑设备的SWIRL流量控制系统及其控制方法

    公开(公告)号:WO2012015087A1

    公开(公告)日:2012-02-02

    申请号:PCT/KR2010/005013

    申请日:2010-07-30

    Inventor: 김동수

    Abstract: 게시된 발명은 엔진; 붐이나 아암 및 버켓을 포함하는 복수의 작업장치용 액츄에이터 및 선회모터; 상기 엔진에 연결되며, 상기 작업장치용 액츄에이터 및 선회모터에 유압을 제공하는 복수의 가변 용량형 유압펌프; 조작레버 또는 조이스틱을 포함하며, 상기 복수의 액츄에이터의 움직임을 지시하는 조작부; 상기 조작부에 의해 상기 유압펌프의 유량을 상기 액츄에이터 및 선회모터로 각각 공급하는 컨트롤 밸브; 상기 액츄에이터의 일측에 설치되며, 상기 액츄에이터의 상대위치를 감지하는 작업장치 위치검출수단; 상기 조작부 일측에 설치되며, 조작레버 또는 조이스틱의 조작량을 감지하는 조작량 감지수단; 및 유량설정부와 작업장치 위치검출수단 및 엔진의 스피드 센서로부터 신호를 입력받아 선회요구유량을 보상하기 위해 유량의 증가율을 산출하는 유량제한부와 사판제어장치에 제어신호를 제공하는 출력수단을 구비하며, 상기 조작량 감지수단(9)으로 부터 감지된 신호를 입력받아 상기 유압펌프의 토출유량을 제어하는 유량제어 컨트롤러;을 포함하여 구성되는 건설기계용 선회유량제어 시스템에 관한 것이다.

    Abstract translation: 提供了一种用于施工设备的旋流控制系统及其控制方法。 涡流控制系统包括:发动机; 多个用于包括吊杆或臂和铲斗的作业装置的致动器和旋转马达; 连接到发动机的多个可变容量型液压泵,以向致动器提供油压并且用于工作装置的旋转电机; 所述操作部包括操纵杆和操纵杆,所述操作部控制所述多个致动器的移动; 分别通过所述操作部将所述液压泵内的流量供给到所述致动器和旋转马达中的控制阀; 工作装置位置检测单元,设置在每个致动器的一侧以检测致动器的相对位置; 设置在所述操作部的一侧以检测所述操纵杆或操纵杆的操纵水平的操纵等级检测单元; 以及流量控制器,其包括从流量设定部接收信号的流量限制部,所述作业装置位置检测单元和发动机速度传感器,以计算流量的增加率,从而补偿所需的流量, 输出单元,用于向旋转斜盘控制装置提供控制信号,其中,所述流量控制器接收由所述操作液位检测单元(9)检测到的信号,以控制每个所述液压泵的排出流量。

    DRUCK-FÖRDERSTROMREGLER
    76.
    发明申请
    DRUCK-FÖRDERSTROMREGLER 审中-公开
    式流控

    公开(公告)号:WO2011128027A1

    公开(公告)日:2011-10-20

    申请号:PCT/EP2011/001610

    申请日:2011-03-30

    Abstract: Offenbart ist ein Druck- Förderstromregler (3) mit einem Druckregelventil (17) und mit einem Förderstromregelventil (19) und mit einem ersten Steueranschluss (A) zu Einstellung einer Verstellpumpe (5), wobei vom Förderstromregelventil über eine in einer Ruhestellung eines Ventilkolbens des Druckregelventils offene Steuerkante des Druckregelventils der Steueranschluss zu einem Tank (T) entlastbar ist.

    Abstract translation: 公开了一种压力流量控制器(3)用压力调节阀(17)和输送流量控制阀(19)和具有第一控制终端装置(A)来设置一个可变排量泵(5),其中,在所述压力调节阀的阀活塞的静止位置经由输送流量控制阀 压力调节控制终端向箱(T)的阀的打开控制边缘能够得到缓解。

    作業車両の油圧回路
    77.
    发明申请
    作業車両の油圧回路 审中-公开
    液压车辆工作车辆

    公开(公告)号:WO2011114930A1

    公开(公告)日:2011-09-22

    申请号:PCT/JP2011/055245

    申请日:2011-03-07

    Abstract:  第一アクチュエータ群18に作動油を供給する第一油圧ポンプ21の吐出量を、第一アクチュエータ群18にかかる負荷圧力のうち最大の負荷圧力に応じて制御するとともに、第二アクチュエータ群19に作動油を供給する第二油圧ポンプ22の吐出量を、第二アクチュエータ群19にかかる負荷圧力のうち最大の負荷圧力に応じて制御するロードセンシングシステムを具備し、第二アクチュエータ群19は、作動油の要求流量が第一アクチュエータ群18及び第二アクチュエータ群19の中で最大である作業用油圧アクチュエータ(アームシリンダ14)を含み、第二油圧ポンプ22の最大吐出流量を、第一油圧ポンプ21の最大吐出流量よりも大きく設定する。

    Abstract translation: 公开了一种用于工作车辆的液压回路,其配备有负载感测系统,该负载感测系统根据负载中的最大负载压力来控制用于向第一致动器组(18)供应工作油的第一液压泵(21)的排出速率 施加到第一致动器组(18)的压力,并且根据施加到第一致动器组(18)的负载压力中的最大负载压力来控制用于向第二致动器组(19)供应工作油的第二液压泵(22)的排出速率 第二致动器组(19)。 第二致动器组(19)包括具有来自第一致动器组(18)和第二致动器组(19)中的最大所需工作油流量的操作液压致动器(臂缸(14)),并且最大 第二液压泵(22)的排出速度被设定为大于第一液压泵(21)的最大排出量。

    METHOD AND DEVICE FOR CONTROLLING A HYDRAULIC SYSTEM
    78.
    发明申请
    METHOD AND DEVICE FOR CONTROLLING A HYDRAULIC SYSTEM 审中-公开
    用于控制液压系统的方法和装置

    公开(公告)号:WO2010151220A1

    公开(公告)日:2010-12-29

    申请号:PCT/SE2010/050720

    申请日:2010-06-23

    Abstract: A method and a device for controlling a load sensing hydraulic system, having a bypass valve (F), which is controlled by a pump pressure (P) and which when the hydraulic system is in operation diverts a pump flow of hydraulic fluid to a tank (E). The bypass valve (F) is pre-stressed towards a closed position and is put on load by the pump pressure (P) towards an open position against the action of the pre-stress. When the hydraulic system operates in a idling operation a first pre-stress element (I) limits the pre-stress to a first pressure and upon activation of the hydraulic system, a pressure regulator ( 10) increases the pre-stress to a second, substantially higher pressure by applying a hydraulic, constant second pre-stress force, that is added to the first pre-stress force and is substantially greater than this.

    Abstract translation: 一种用于控制负载感测液压系统的方法和装置,其具有由泵压力(P)控制的旁通阀(F),并且当液压系统运行时将液压流体的泵流转向罐 (E)。 旁通阀(F)被预压到关闭位置,并且通过泵压力(P)朝向打开位置施加负载以抵抗预应力的作用。 当液压系统在空转操作时,第一预应力元件(I)将预应力限制到第一压力,并且在启动液压系统时,压力调节器(10)将预应力增加到第二压力, 通过施加液压的恒定的第二预应力而施加相当高的压力,其被加到第一预应力上并且基本上大于此。

    HYDRAULIC CONTROL SYSTEM UTILIZING FEED-FOWARD CONTROL
    79.
    发明申请
    HYDRAULIC CONTROL SYSTEM UTILIZING FEED-FOWARD CONTROL 审中-公开
    利用前馈控制的液压控制系统

    公开(公告)号:WO2010075212A2

    公开(公告)日:2010-07-01

    申请号:PCT/US2009068737

    申请日:2009-12-18

    Abstract: The present disclosure is directed toward a hydraulic control system. The system may have a pump and a tool actuator configured to move a tool with a flow of pressurized fluid provided by the pump. The system may further have a tool control valve configured to control the flow of pressurized fluid to the tool actuator. The system may also have a controller operably connected with the tool control valve and the pump. The controller may be configured to receive a tool movement request. The controller may further be configured to estimate a change in a flow demand across the tool control valve associated with the tool movement request. The controller may also be configured to command adjustment of a discharge flow rate of the pump based on the estimated change in flow demand to satisfy the tool movement request.

    Abstract translation: 本公开涉及一种液压控制系统。 该系统可以具有泵和工具致动器,该泵和工具致动器被构造成用泵提供的加压流体流来移动工具。 该系统可以进一步具有工具控制阀,该工具控制阀构造成控制加压流体流向工具致动器。 该系统还可以具有与工具控制阀和泵可操作地连接的控制器。 控制器可以被配置成接收工具移动请求。 控制器可以进一步被配置为估计与工具移动请求相关联的工具控制阀上的流量需求的变化。 控制器还可以被配置为基于流量需求的估计变化来命令调节泵的排放流量以满足工具移动请求。

    HYDRAULIC TWO-CIRCUIT SYSTEM AND INTERCONNECTING VALVE ARRANGEMENT
    80.
    发明申请
    HYDRAULIC TWO-CIRCUIT SYSTEM AND INTERCONNECTING VALVE ARRANGEMENT 审中-公开
    液压双回路系统及组合的控制阀设置

    公开(公告)号:WO2008058584A8

    公开(公告)日:2009-09-11

    申请号:PCT/EP2007007962

    申请日:2007-09-13

    Inventor: WEICKERT THOMAS

    Abstract: A hydraulic two-circuit system (2, 4) for activating consumers (A1, B1; A2, B2; A3, B3) of a mobile unit, for example a track-laying unit, and an interconnecting valve arrangement (38), which is suitable for a two-circuit system (2, 4) of this type and via which the two circuits (2, 4) can be interconnected so as to add them together, are disclosed. According to the invention, the interconnecting valve arrangement has an interconnecting valve with two pressure connections (P1, P2), two LS input connections (LS1, LS2) and two LS output connections, wherein a valve body of the interconnecting valve is designed with four control surfaces, of which two control surfaces which act in one direction are acted upon by the highest load pressure (LS1) in the first circuit and by the pumping pressure (P2) in the second circuit, and the control surfaces acting in the other direction are acted upon by the highest load pressure (LS2) in the second circuit and by the pumping pressure (P1) in the first circuit.

    Abstract translation: 本发明公开了一种液压双回路系统(2,4),用于负载控制的移动设备的(A1,B1; A2,B2 A3,B3),例如,被跟踪设备和用于这种双电路系统(2,4),其适于联接阀组件(38), 通过该两个电路(2,4)可用于相加地连接在一起。 根据本发明,所述互连阀组件包括具有两个压力连接(P1,P2),两个LS输入(LS1,LS2)和两个LS-输出端子的联接阀,其中,所述联接阀的阀体上设置有四个控制面,它的两个单向控制表面 在第一电路中的最高负荷压力(LS1)和在第二回路中的泵压力(P2),并作用在第二电路和泵压力(P1)的最高负载压力(LS2)的其它方向上的控制表面在所述第一电路被应用。

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