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公开(公告)号:WO2014127356A1
公开(公告)日:2014-08-21
申请号:PCT/US2014/016902
申请日:2014-02-18
Applicant: PARKER-HANNIFIN CORPORATION
Inventor: HARSIA, Jarmo , STEGEMANN, Patrick
CPC classification number: E02F9/2235 , E02F9/2225 , E02F9/2232 , E02F9/2246 , E02F9/2296 , F04B49/22 , F15B11/165 , F15B2211/20546 , F15B2211/20553 , F15B2211/253 , F15B2211/3116 , F15B2211/40507 , F15B2211/40515 , F15B2211/40553 , F15B2211/41509 , F15B2211/45 , F15B2211/652 , G05D7/01
Abstract: A load sense open center hydraulic system provides efficiency and operator feedback and includes one or more constant flow- open center valves (218); respective one or more parallel power cores (238) operatively coupled to the one or more constant flow- open center valves; a variable capacity pump (246) directly fluidly connected to the one or more parallel power cores; and a pressure compensated flow control fluidly connected between the variable capacity pump and the one or more constant flow-open center valves. The one or more constant flow-open center valves are not fluidly coupled to a fixed capacity pump.
Abstract translation: 负载感应开放中心液压系统提供效率和操作者反馈,并且包括一个或多个恒定的开流式中心阀(218); 相应的一个或多个平行的功率芯(238),其可操作地耦合到所述一个或多个恒定的流量开放的中心阀; 直接流体连接到所述一个或多个并联功率核心的可变容量泵(246); 以及流体连接在可变容量泵和一个或多个恒定流量开启中心阀之间的压力补偿流量控制。 一个或多个恒定的开式中心阀不能流体耦合到固定容量的泵。
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公开(公告)号:WO2013103954A2
公开(公告)日:2013-07-11
申请号:PCT/US2013/020513
申请日:2013-01-07
Applicant: PARKER-HANNIFIN CORPORATION
Inventor: FRANZONI, Germano , HARSIA, Jarmo , LOWMAN, Roger
IPC: F04B7/04
CPC classification number: F15B11/08 , F15B11/024 , F15B13/044 , F15B2211/30565 , F15B2211/3058 , F15B2211/31558 , F15B2211/625 , F15B2211/7053
Abstract: A method of controlling a float function of a cylinder having a first side and a second side includes connecting the second side of the cylinder to a reservoir; connecting the first side of the cylinder to an output of a pump and to the reservoir; and supplying an amount of flow from a pump less than an amount supplied by the pump under loaded conditions. A three-position directional control valve having a pump port, a reservoir port, a first cylinder port, and a second cylinder port may be provided to effectuate aspects of this method.
Abstract translation: 控制具有第一侧和第二侧的气缸的浮动功能的方法包括将气缸的第二侧连接到储液器; 将所述气缸的第一侧连接到泵的输出和所述储存器; 并且在负载条件下从小于供给泵的量的泵提供一定量的流量。 可以提供具有泵口,储存器端口,第一气缸端口和第二气缸端口的三位置方向控制阀,以实现该方法的方面。
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公开(公告)号:WO2015023301A1
公开(公告)日:2015-02-19
申请号:PCT/US2013/055549
申请日:2013-08-19
Applicant: PARKER-HANNIFIN CORPORATION
Inventor: HARSIA, Jarmo
Abstract: A wood chipping system including a vehicle having an engine and a power take off attached to and selectively powered by the engine. A hydraulic pump is positioned on the vehicle and is driven by the power take off. The system can include a towable support having a chipper mounted thereon, the chipper having a chipper drum driven by a hydraulic motor, the hydraulic motor driving a hydraulic pump that drives a feed roll system of the chipper. The system can include a brake valve associated with the main motor to stop rotation of the chipper drum.
Abstract translation: 一种木屑切割系统,包括具有发动机的车辆和附接到发动机并由发动机选择性动力的动力输出。 液压泵定位在车辆上并由动力取出驱动。 该系统可以包括具有安装在其上的切屑机的可拖动支撑件,该切屑机具有由液压马达驱动的切屑滚筒,液压马达驱动驱动切屑机的进料辊系统的液压泵。 该系统可以包括与主马达相关联的制动阀,以阻止切屑鼓的旋转。
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公开(公告)号:WO2012125793A1
公开(公告)日:2012-09-20
申请号:PCT/US2012/029176
申请日:2012-03-15
Applicant: PARKER HANNIFIN CORPORATION , HARSIA, Jarmo , LOWMAN, Roger , FRANZONI, Germano
Inventor: HARSIA, Jarmo , LOWMAN, Roger , FRANZONI, Germano
IPC: E02F9/22
CPC classification number: E02F9/2207 , E02F3/384 , F15B2211/45 , F15B2211/853
Abstract: A cushioned swing circuit provides the reduction of oscillation common in the operation of heavy equipment such as with boom members. The circuit utilizes a transfer of high pressure fluid flow (caused by the inertial of the swing during rapid deceleration) from one leg of the circuit to the other leg of the circuit or to the sump which serves as decompression for the oil that would ordinarily be trapped in the leg. These phenomena create the swing cushioning effect.
Abstract translation: 缓冲式摆动回路提供了诸如用悬臂构件的重型设备的操作中常见的振荡减少。 该回路利用从回路的一条腿到回路的另一条腿的高压流体流动(由快速减速时的挥杆惯性引起的)转移到用于通常为油的油的减压器 被困在腿上。 这些现象造成摆动缓冲效果。
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公开(公告)号:WO2012082176A1
公开(公告)日:2012-06-21
申请号:PCT/US2011/029152
申请日:2011-03-21
Applicant: PARKER-HANNIFIN CORPORATION , LOWMAN, Roger , FRANZONI, Germano , HARSIA, Jarmo
Inventor: LOWMAN, Roger , FRANZONI, Germano , HARSIA, Jarmo
IPC: F15B21/08
CPC classification number: F15B15/18 , F15B11/00 , F15B2211/3127 , F15B2211/3144 , F15B2211/50518 , F15B2211/50545 , F15B2211/5156 , F15B2211/6306 , F15B2211/632 , F15B2211/6336 , F15B2211/6346 , Y10T137/7837 , Y10T137/86027
Abstract: A hydraulic system (10) includes an electronically-controlled counter-pressure valve (60) that enables backpressure in a return line (36) of the system to be varied by a control unit (64). The system allows active control of the pressure in the return line to produce different return pressures for different situations. A higher return line pressure may be set to improve make-up or recirculating flow through an anti-cavitation valve (50). This may improve controllability of functions that benefit from backpressure, such as lowering loads (12). The control unit that controls the counter-pressure valve may take into account any of a wide variety of possible inputs when setting the counter-pressure valve.
Abstract translation: 液压系统(10)包括电子控制的逆压阀(60),其能够通过控制单元(64)改变系统的返回管线(36)的背压。 该系统允许主动控制返回管路中的压力,以在不同情况下产生不同的回流压力。 可以设置更高的返回管路压力以改善通过抗气蚀阀(50)的补充或循环流动。 这可以提高受益于背压的功能的可控性,例如降低负载(12)。 控制反压阀的控制单元可以在设置反压阀时考虑到各种可能的输入中的任何一个。
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公开(公告)号:WO2013165951A1
公开(公告)日:2013-11-07
申请号:PCT/US2013/038766
申请日:2013-04-30
Applicant: PARKER-HANNIFIN CORPORATION
Inventor: HARSIA, Jarmo
IPC: F15B11/044 , B65F3/06
CPC classification number: B65F3/06 , F15B11/0445 , F15B2211/20546 , F15B2211/20576 , F15B2211/3138 , F15B2211/50581 , F15B2211/5059 , F15B2211/6346 , F15B2211/6652 , F15B2211/761
Abstract: A hydraulic actuator system is provided in which operator commanded flow is provided by a variable displacement hydraulic pump with electric control. The system includes an operator interface (5,6) which generates an output signal that is proportional to an input to the operator interface. The generated signal is used to control the variable displacement pump (22) to provide an operator commanded flow from the pump. The system includes a counterbalance valve (50) adapted to prevent over-running load conditions on the hydraulic actuator.
Abstract translation: 提供了一种液压致动器系统,其中由具有电控制的可变排量液压泵提供操作者指令的流量。 该系统包括一个操作界面(5,6),它产生一个与操作界面的输入成比例的输出信号。 所产生的信号用于控制可变排量泵(22)以从泵提供操作者指令的流量。 该系统包括适于防止液压致动器上的过载负载状况的平衡阀(50)。
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公开(公告)号:WO2013071041A2
公开(公告)日:2013-05-16
申请号:PCT/US2012/064352
申请日:2012-11-09
Applicant: PARKER-HANNIFIN CORPORATION
Inventor: FRANZONI, Germano , HARSIA, Jarmo , CLAAR, Leslie , PERSSON, Bengt-Goran
Abstract: A vehicle steering system including a steering device, a position sensor that senses the position of the steering device, and an electronic control unit in operative communication with the position sensor and configured to control the capacity of a variable capacity pump based on output of the sensor is described herein. The variable capacity pump may be a variable displacement pump and the system may also include an electric displacement control adapted to control displacement of the variable displacement pump. The electronic control unit may be configured to determine a rate of change of the position of the steering device, and generate a capacity command signal for controlling the capacity of the variable capacity pump based on the determined rate of change.
Abstract translation: 一种车辆转向系统,包括转向装置,感测转向装置的位置的位置传感器以及与位置传感器可操作地通信的电子控制单元,其被配置为基于传感器的输出来控制可变容量泵的容量 在此描述。 可变容积泵可以是可变排量泵,并且系统还可以包括适于控制可变排量泵的排量的电位移控制。 电子控制单元可以被配置为确定转向装置的位置的变化率,并且基于确定的变化率生成用于控制可变容量泵的容量的容量命令信号。
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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
Applicant: FRANZONI, Germano , HARSIA, Jarmo , LOWMAN, Roger , PARKER HANNIFIN CORPORATION
Inventor: FRANZONI, Germano , HARSIA, Jarmo , LOWMAN, Roger
IPC: F15B11/16
CPC classification number: F15B11/162 , F15B11/165 , F15B13/022 , F15B2211/20546 , F15B2211/253 , F15B2211/50536 , F15B2211/57 , F15B2211/6055 , F15B2211/6346 , F15B2211/6652 , F15B2211/85
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。
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