Proportional servo hydraulic control valve
    11.
    发明授权
    Proportional servo hydraulic control valve 有权
    比例伺服液压控制阀

    公开(公告)号:US09441645B2

    公开(公告)日:2016-09-13

    申请号:US14218250

    申请日:2014-03-18

    IPC分类号: F15B13/04 F15B13/044

    摘要: A system has an actuator having a rotor or a linear piston, and ports for hydraulic fluid, an electro-mechanical sensor sensing position of the rotor or linear piston, a valve having a 1 plug in a bore of a valve body, the plug having cross bores aligning with passages within the valve body communicating inlet and outlet ports depending on relative position of the plug in the bore of the valve body, a servo motor to move the plug around or along the axis to different positions to align individual ones of the cross bores with individual ones of the passages communicating with individual ones of the ports, and a programmable controller coupled to the electro-mechanical sensor and to the servo motor, the controller enabled to control the servo motor to accomplish programmed movement and position of the rotor or linear piston of the hydraulically-driven actuator.

    摘要翻译: 系统具有致动器,其具有转子或线性活塞,以及用于液压流体的端口,感测转子或线性活塞的位置的机电传感器,具有阀体的孔中的1个插塞的阀,所述插头具有 十字孔与阀体内的通道对准,其连通入口和出口端口,这取决于塞子在阀体孔中的相对位置,伺服马达将塞子围绕或沿轴线移动到不同的位置, 交叉孔与单个端口中的单独通道通信,以及耦合到机电传感器和伺服电动机的可编程控制器,所述控制器能够控制伺服电动机以完成编程的运动和转子的位置 或液压驱动致动器的直线活塞。

    Method for actuating a hydraulic valve arrangement, and hydraulic valve arrangement
    12.
    发明授权
    Method for actuating a hydraulic valve arrangement, and hydraulic valve arrangement 有权
    用于启动液压阀装置的方法和液压阀装置

    公开(公告)号:US09261198B2

    公开(公告)日:2016-02-16

    申请号:US13974198

    申请日:2013-08-23

    申请人: Robert Bosch GmbH

    摘要: The disclosure relates to a method for actuating a hydraulic valve arrangement, having a hydraulic continuously adjustable valve and having a hydraulic switching valve for providing a variable opening cross section, wherein an opening cross section threshold value is predefined, wherein, above the opening cross section threshold value, the switching valve is placed into a defined switching position and only the continuously adjustable valve is actuated, and wherein, below the opening cross section threshold value, the continuously adjustable valve is placed into a defined switching position and only the switching valve is actuated.

    摘要翻译: 本发明涉及一种用于致动液压阀装置的方法,液压阀装置具有液压连续可调节的阀,并具有用于提供可变开口横截面的液压切换阀,其中预定了开口横截面阈值,其中,在开口横截面 切换阀被置于限定的切换位置,只有连续可调节阀被致动,并且其中,在开口横截面阈值以下,连续可调节阀被放置在限定的切换位置,并且仅切换阀为 启动。

    HYDRAULIC SYSTEM FOR EXTREME CLIMATES
    15.
    发明申请
    HYDRAULIC SYSTEM FOR EXTREME CLIMATES 有权
    极端气候的液压系统

    公开(公告)号:US20150204358A1

    公开(公告)日:2015-07-23

    申请号:US14600521

    申请日:2015-01-20

    摘要: A method of operating a hydraulic system and hydraulic system for raising and lowering a boom in extreme climates. When the temperature is below a low temperature the system is operated open center while a variable displacement pump providing a constant flow of hydraulic fluid. When the temperature is between the low temperature and a moderate temperature the variable displacement pump provides at least a minimum flow of hydraulic fluid to the system, and the minimum flow decreases linearly with an increase of the temperature. When the temperature is above the moderate temperature, the system is operated closed center while maintaining at least a system pressure when in neutral and wherein the variable displacement pump provides hydraulic fluid to the actuator when a control valve is actuated.

    摘要翻译: 一种操作液压系统和液压系统的方法,用于在极端气候中升高和降低起重臂。 当温度低于低温时,系统操作开放中心,而可变排量泵提供恒定的液压流体流量。 当温度处于低温和中等温度之间时,可变排量泵至少提供液压流体到系统的最小流量,最小流量随着温度的升高而线性减小。 当温度高于中等温度时,系统在闭合中心运行,同时在空档时至少保持系统压力,并且当控制阀被致动时,可变排量泵向致动器提供液压流体。

    Hydraulic Drive Circuit
    16.
    发明申请
    Hydraulic Drive Circuit 有权
    液压驱动电路

    公开(公告)号:US20150121860A1

    公开(公告)日:2015-05-07

    申请号:US14241411

    申请日:2013-07-23

    IPC分类号: F15B13/02 F15B13/04

    摘要: A hydraulic drive circuit is provided that can achieve high responsiveness, high precision, and high efficiency at a low cost in a hydraulic drive system popularly used in an industrial machine such as a press machine, a construction machine, and the like.A hydraulic drive circuit 1 supplies pressured liquid discharged from a main hydraulic pump P to drive a hydraulic actuator 2, and includes a first valve 4 arranged in a main flow line 3 that circulates pressured liquid discharged from the main hydraulic pump P to the hydraulic actuator 2, a second valve 5 to return the pressured liquid flowing into one liquid chamber of the hydraulic actuator 2 and discharged from the other liquid chamber to a tank T, and a sub-hydraulic pump 7 that is arranged between the main hydraulic pump P and the drive direction control valve 4 and uses the pressured liquid flowing in a branched flow line 6 branched from the main flow line 3 to increase a pressure and a volume of the hydraulic liquid in the main flow line 3 by predetermined quantities, respectively.

    摘要翻译: 提供了一种液压驱动电路,其可以在诸如压机,建筑机械等的工业机械中普遍使用的液压驱动系统中以低成本实现高响应性,高精度和高效率。 液压驱动电路1供给从主液压泵P排出的加压液体来驱动液压致动器2,并且包括配置在主流路3中的第一阀4,该主流路3将从主液压泵P排出的加压液体循环到液压致动器 如图2所示,第二阀5将流入液压致动器2的一个液体室的加压液体返回到另一个液体室排出到罐T;副液压泵7,其配置在主液压泵P和 驱动方向控制阀4,并使用从主流路3分支的分支流路线6中流动的加压液体,分别将主流路3中的液压液体的压力和体积分别增加预定量。

    INDEPENDENT FLOW RATE CONTROLLING HYDRAULIC SYSTEM FOR PRESSURE CONTROL OF EXCAVATOR AND INDEPENDENT HYDRAULIC PRESSURE CONTROLLING METHOD USING THE SAME
    17.
    发明申请
    INDEPENDENT FLOW RATE CONTROLLING HYDRAULIC SYSTEM FOR PRESSURE CONTROL OF EXCAVATOR AND INDEPENDENT HYDRAULIC PRESSURE CONTROLLING METHOD USING THE SAME 审中-公开
    独立流量控制液压系统用于压力控制和独立液压控制方法

    公开(公告)号:US20150082782A1

    公开(公告)日:2015-03-26

    申请号:US14555973

    申请日:2014-11-28

    IPC分类号: F15B11/16 E02F9/22

    摘要: An independent flow rate controlling hydraulic system for pressure control of an excavator, in which a hydraulic system of the excavator can be variably controlled via independent flow rate control. The hydraulic system includes a plurality of actuators which actuate a working apparatus, a pressure control-type hydraulic pump which feeds working fluid to the actuator, first and second electronic proportional control valves which are disposed at a piston-side inlet flow path and a load-side inlet flow path connected from the hydraulic pump to the actuators, third and fourth electronic proportional control valves which are disposed at a piston-side outlet flow path and a load-side outlet flow path connected from the actuators to a hydraulic tank, and a control unit which variably controls areas of the flow paths by controlling the first, second, third and fourth electronic proportional control valves depending on an amount by which a control stick is manipulated.

    摘要翻译: 用于挖掘机的压力控制的独立流量控制液压系统,其中挖掘机的液压系统可以通过独立的流量控制被可变地控制。 液压系统包括多个致动器,致动器致动工作装置;压力控制型液压泵,其将工作流体输送到致动器;第一和第二电子比例控制阀,其设置在活塞侧入口流动路径和负载 从液压泵连接到致动器的第三和第四电子比例控制阀,设置在从致动器连接到液压缸的活塞侧出口流动路径和负载侧出口流动路径上的第三和第四电子比例控制阀,以及 控制单元,其通过根据控制棒的操作量控制第一,第二,第三和第四电子比例控制阀来可变地控制流路的区域。

    Hydraulic system
    18.
    发明授权
    Hydraulic system 有权
    液压系统

    公开(公告)号:US08943819B2

    公开(公告)日:2015-02-03

    申请号:US13278939

    申请日:2011-10-21

    IPC分类号: F15B11/17 F15B7/00 E02F9/22

    摘要: A hydraulic system includes a variable displacement first pump, a first linear actuator fluidly connected to the first pump via a first closed-loop circuit, a variable displacement second pump, and second and third linear actuators fluidly connected to the second pump in parallel via a second closed-loop circuit. The system also includes a variable displacement third pump, a fourth linear actuator fluidly connected to the third pump via a third closed-loop circuit, a variable displacement fourth pump, and a first rotary actuator fluidly connected to the fourth pump via a fourth closed-loop circuit. The system further includes a second rotary actuator fluidly connected to the second pump in parallel with the second and third linear actuators. The system also includes a third rotary actuator fluidly connected to the third pump in parallel with the fourth linear actuator.

    摘要翻译: 液压系统包括可变排量的第一泵,经由第一闭环回路流体地连接到第一泵的第一线性致动器,可变排量的第二泵,以及通过一个第二泵并联连接到第二泵的第二和第三线性致动器 第二闭环电路。 该系统还包括可变排量第三泵,经由第三闭环回路流体连接到第三泵的第四线性致动器,可变排量第四泵和经由第四闭合回路流体连接到第四泵的第一旋转致动器。 回路电路。 该系统还包括与第二和第三线性致动器平行地流体连接到第二泵的第二旋转致动器。 该系统还包括与第四线性致动器平行地流体连接到第三泵的第三旋转致动器。

    TRANSPORT VEHICLE
    19.
    发明申请
    TRANSPORT VEHICLE 有权
    运输车辆

    公开(公告)号:US20150015054A1

    公开(公告)日:2015-01-15

    申请号:US14370281

    申请日:2013-03-06

    IPC分类号: B60P1/16 F15B11/024

    摘要: A control valve device (19) controls supply and discharge of pressurized oil to and from a hoist cylinder (12) which tilts a vessel (3). A throttle (24C) that limits a flow rate of hydraulic oil which is discharged from a hydraulic pump (13) and flows in a return line (16) through a pump line (15), a first directional control valve (24) and a center bypass oil passage (23) is provided in the floating position (F) of the first directional control valve (24). When the first directional control valve (24) is in the floating position (F), the upstream side of the throttle (24C) is connected to the pump line (15), and the downstream side of the throttle (24C) is connected to the return line (16). In addition, a rod-side actuator line (18) communicated with rod-side oil chambers (12E, 12F) in the hoist cylinder (12) is connected to the pump line (15).

    摘要翻译: 控制阀装置(19)控制加压油的供给和排出,该压力油向倾斜船只(3)的提升缸(12)供给和排出。 限制从液压泵(13)排出并在返回管线(16)中通过泵管线(15)流动的液压油的流量的节流阀(24C),第一方向控制阀(24)和 在第一方向控制阀(24)的浮动位置(F)设置有中心旁路油路(23)。 当第一方向控制阀(24)处于浮动位置(F)时,节气门(24C)的上游侧连接到泵管线(15),节气门(24C)的下游侧连接到 返回线(16)。 此外,与提升气缸(12)中的杆侧油室(12E,12F)连通的杆侧致动器管线(18)连接到泵管路(15)。

    Hydraulic system having multiple actuators and an associated control method
    20.
    发明授权
    Hydraulic system having multiple actuators and an associated control method 有权
    具有多个执行器的液压系统和相关的控制方法

    公开(公告)号:US08726646B2

    公开(公告)日:2014-05-20

    申请号:US12866941

    申请日:2009-03-06

    IPC分类号: F15B13/04

    摘要: A hydraulic system, and associated method of control, includes an operator input device, a source of hydraulic fluid flow, and a plurality of actuators. At least one valve associated with each actuator for controlling a flow of fluid to and from the actuator. A controller is responsive to a signal from the operator input device to calculate a hydraulic pressure to be supplied to each of the actuators. The controller controls the source of hydraulic fluid flow and the valves for powering the actuators with the calculated hydraulic pressure. The controller also monitors a sensed parameter to determine whether the actuators can be powered with the calculated hydraulic pressure, and in response to a determination that the actuators cannot be powered with the calculated hydraulic pressure, calculates a discrepancy ratio and modifies actuation of the actuators with the discrepancy ratio.

    摘要翻译: 液压系统和相关联的控制方法包括操作者输入装置,液压流体流源和多个致动器。 与每个致动器相关联的至少一个阀,用于控制流体和/或从致动器的流动。 控制器响应于来自操作者输入装置的信号来计算要提供给每个致动器的液压。 控制器控制液压流体的流动源,以及用计算出的液压对驱动器供电的阀门。 控制器还监视感测参数以确定致动器是否可以用计算出的液压进行动力,并且响应于确定致动器不能用计算出的液压进行动力,计算差异比并修改致动器的致动器, 差异率。