公开(公告)号：US09488195B2

公开(公告)日：2016-11-08

申请号：US14004262

申请日：2012-03-22

申请人： Takeshi Higuchi

发明人： Takeshi Higuchi

IPC分类号： F15B21/14 ,  F15B9/08 ,  E02F9/22

CPC分类号： F15B9/08 ,  E02F9/2235 ,  E02F9/2242 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296 ,  F15B21/14 ,  F15B2211/20507 ,  F15B2211/20546 ,  F15B2211/6313 ,  F15B2211/6316 ,  F15B2211/6326 ,  F15B2211/7058 ,  F15B2211/7128 ,  F15B2211/763 ,  F15B2211/88

摘要： Disclosed is a hydraulic system for a hydraulic excavator. The hydraulic system inputs rotary power from a rotary power producing means to a hydraulic pump to produce hydraulic power, and operates an actuator by the hydraulic power. A hydraulic oil drain line from the actuator is branched into a flow rate control line as a line connected to a spool of a flow rate control valve controllable by manipulation of a lever and a power regeneration line as a line connected to a variable displacement motor for converting hydraulic power of discharged hydraulic oil to reusable energy. A regeneration ratio control means is also arranged to control the variable displacement motor such that a flow rate of the power regeneration line satisfies a preset fixed ratio α relative to a flow rate occurred in the flow rate control line by the manipulation of the lever.

摘要翻译： 公开了一种液压挖掘机的液压系统。 液压系统将来自旋转动力产生装置的旋转动力输入到液压泵以产生液压动力，并且通过液压动力来操作致动器。 来自致动器的液压油排放管线被分支成流量控制线，作为连接到流量控制阀的阀芯的管线，流量控制阀可通过操纵杆和动力再生管线控制，该管路连接到可变排量马达， 将排出的液压油的液压功率转换为可重复使用的能量。 再生比控制装置还被配置为控制可变排量马达，使得动力再生管线的流量相对于通过操纵杆而在流量控制线中产生的流量达到预设的固定比α。

公开(公告)号：US09316236B2

公开(公告)日：2016-04-19

申请号：US13713680

申请日：2012-12-13

申请人： Kobelco Cranes Co., Ltd. ,  Kobe Steel, Ltd.

发明人： Hiroo Kondo ,  Takaharu Michida ,  Katsuki Yamagata ,  Naoto Hori ,  Naoya Kitazumi ,  Satoshi Maekawa ,  Naoki Sugano

IPC分类号： F15B11/04 ,  F15B9/08 ,  F15B11/044 ,  F15B21/04

CPC分类号： F15B9/08 ,  F15B11/044 ,  F15B21/047 ,  F15B2211/3116 ,  F15B2211/3157 ,  F15B2211/329 ,  F15B2211/353 ,  F15B2211/46 ,  F15B2211/7058 ,  F15B2211/75 ,  F15B2211/761 ,  F15B2211/8609

摘要： Provided is a hydraulic driving apparatus for a working machine, preventing an excessive decrease in pressure on a meter-in side and moving a load at a stable speed in a lowering direction. The apparatus comprises: a hydraulic pump; a hydraulic actuator; a manipulation device; a working hydraulic circuit including a meter-in flow passage and a meter-out flow passage; a control valve for changing a state of supply of hydraulic fluid to drive the hydraulic actuator at a speed designated by the manipulation device; a meter-in flow adjuster and a meter-out flow adjuster adapted to adjust a meter-in flow rate and meter-in flow rate respectively to respective value corresponding to the speed designated by the manipulation device; and a relief valve. The meter-in and meter-out flow adjusters have respective flow adjustment characteristics such that the meter-in flow rate is greater than the meter-out flow rate.

摘要翻译： 本发明提供一种用于工作机械的液压驱动装置，防止了进入侧的压力的过度降低，并且在下降方向上以稳定的速度移动负载。 该装置包括：液压泵; 液压执行器; 操纵装置; 工作液压回路，包括流入通道和流出通道; 控制阀，用于改变液压流体的供给状态，以由操纵装置指定的速度驱动液压致动器; 一个流入式流量调节器和一个流出量调节器，适用于分别将流量和流量流量调整到对应于由操纵装置指定的速度的相应值; 和安全阀。 输入和输出流量调节器具有相应的流量调节特性，使得流入流量大于流出流量。

公开(公告)号：US09021799B1

公开(公告)日：2015-05-05

申请号：US13115343

申请日：2011-05-25

申请人： Michael W. Taylor ,  Heath F. McCormick ,  Thomas J. Langenfeld ,  Nathan W. Bonny

发明人： Michael W. Taylor ,  Heath F. McCormick ,  Thomas J. Langenfeld ,  Nathan W. Bonny

IPC分类号： F03C1/06 ,  F15B9/08

CPC分类号： F04C14/24 ,  F01B3/0064 ,  F04C2/30 ,  F15B9/08

摘要： A hydraulic motor assembly capable of precise control having a housing, a hydraulic mounting surface located in the housing, a cylinder block rotatably disposed on the hydraulic mounting surface, a motor shaft engaged to the cylinder block and supported proximate to a first end, a plurality of cooperating gears located in the housing and rotationally engaged to a second end of the motor shaft, an output shaft rotationally engaged to the plurality of cooperating gears, a speed sensor located proximate to one of the plurality of cooperating gears, wherein the speed sensor transmits a signal indicative of the rotational speed of the one of the plurality of cooperating gears.

摘要翻译： 一种能够精确控制的液压马达组件，具有壳体，位于壳体中的液压安装表面，可旋转地设置在液压安装表面上的气缸体，接合到气缸体并靠近第一端支撑的马达轴，多个 位于壳体中的配合齿轮和旋转地接合到电动机轴的第二端;输出轴，其旋转地接合到多个配合齿轮;位于多个配合齿轮中的一个上的速度传感器，其中速度传感器传递 指示所述多个配合齿轮中的一个的转速的信号。

公开(公告)号：US20140000449A1

公开(公告)日：2014-01-02

申请号：US14006350

申请日：2012-02-02

申请人： Udo Brehmer ,  Bernd Schraff ,  Roland Rehtanz

发明人： Udo Brehmer ,  Bernd Schraff ,  Roland Rehtanz

IPC分类号： F04B1/29 ,  F15B13/04

CPC分类号： F04B1/29 ,  F01B3/0032 ,  F04B1/10 ,  F04B1/20 ,  F04B1/2078 ,  F04B1/328 ,  F15B9/08 ,  F15B13/0416 ,  F16H61/42

摘要： An adjusting device of an axial piston machine having a displacement volume that is adjusted by a pivoting yoke. The adjusting device has a cylinder, which is radially spaced from and tangential to the yoke pivot axis. A piston communicates with the yoke and is adjusted by hydraulic pressure change. A control arrangement has a position regulating valve with a control piston which can set the hydraulic pressure acting on the piston. A mechanical return can transfer the yoke pivoting position to the control piston. The valve is axially parallel to the cylinder and radially spaced from the yoke pivot axis. The return comprises an axially movable sensing piston and coaxial return spring which are axially adjacent to the valve. The sensing piston abuts a yoke surface that is eccentric with respect to the pivot axis and connected to the control piston by the return spring.

摘要翻译： 轴向活塞机的调节装置，其具有由枢转轭调节的排量。 调节装置具有与轭枢转轴线径向间隔开并与其相切的圆筒。 活塞与轭连通，并通过液压变化进行调节。 控制装置具有位置调节阀，其具有可设定作用在活塞上的液压的控制活塞。 机械返回可以将轭枢转位置传递到控制活塞。 阀门轴向平行于气缸并与轭架枢转轴线径向间隔开。 返回件包括轴向相邻的阀的可轴向移动的检测活塞和同轴复位弹簧。 感测活塞抵靠相对于枢转轴线偏心的轭表面，并通过复位弹簧连接到控制活塞。

公开(公告)号：US20130343939A1

公开(公告)日：2013-12-26

申请号：US13532783

申请日：2012-06-26

申请人： Kenneth John Stoddard ,  Cameron Snow Andersen ,  Garth L. Mason ,  Jared M. Mangum

发明人： Kenneth John Stoddard ,  Cameron Snow Andersen ,  Garth L. Mason ,  Jared M. Mangum

IPC分类号： F15B13/042 ,  F04B45/04 ,  F04B7/02

CPC分类号： F15B9/08 ,  F04B9/105 ,  F04B9/1056 ,  F04B53/10 ,  F15B15/1476 ,  F15B15/204 ,  Y10T137/8663

摘要： A two-step hydraulic valve is described. In an implementation, a two-step hydraulic valve with retrograde spool action has a pilot spool that controls hydraulic force applied to a main spool to switch a rod of a hydraulic actuator back-and-forth between extension and retraction. The main spool is hydraulically driven in retrograde motion to the pilot spool, providing improved reliability and switching action for the valve. The pilot spool also has an overtravel feature that can be used to hyperextend the rod for various purposes. In an example system, the two-step hydraulic valve controls a hydraulic actuator connected to drive a submersible reciprocating pump, such as a diaphragm pump.

摘要翻译： 描述了两步液压阀。 在一个实施方案中，具有逆向阀芯作用的两级液压阀具有先导阀芯，其控制施加到主阀芯的液压力，以在延伸和缩回之间来回切换液压致动器的杆。 主阀芯以逆向运动液压驱动到先导阀芯，为阀门提供改进的可靠性和开关动作。 导向阀芯还具有超行程特征，可以用于将杆伸出以用于各种目的。 在示例系统中，两级液压阀控制连接以驱动潜水往复泵（例如隔膜泵）的液压致动器。

公开(公告)号：US20130219873A1

公开(公告)日：2013-08-29

申请号：US13880805

申请日：2011-10-26

申请人： Xuejun Xu

发明人： Xuejun Xu

IPC分类号： F15B15/18

CPC分类号： F15B15/18 ,  F15B9/08 ,  F15B13/0406

摘要： This Mechanism introduces a new concept for rotary valves used in fluid power transmission and control. It transforms the rotary motion precisely to axial straight motion. It can also be used as an actuator. There are two sensitive chambers at the ends of the spool. Four helical grooves operate in axial symmetry. The rotary motion of the helical groove changes the connections/distribution between ports and chambers, thus forces the spool to slide to a balanced position.

摘要翻译： 该机制介绍了用于流体动力传动和控制的旋转阀的新概念。 它将旋转运动精确地转换为轴向直线运动。 它也可以用作执行器。 在阀芯端部有两个敏感室。 四个螺旋槽以轴向对称运行。 螺旋槽的旋转运动改变了端口和室之间的连接/分配，从而迫使阀芯滑动到平衡位置。

公开(公告)号：US20130087209A1

公开(公告)日：2013-04-11

申请号：US13630386

申请日：2012-09-28

申请人： Eaton Corporation

发明人： Aaron Kelly Krahn

IPC分类号： F15B9/08

CPC分类号： F15B9/08 ,  B62D1/22 ,  B62D5/09 ,  F15B2211/30565 ,  F15B2211/324 ,  F15B2211/329 ,  F15B2211/605 ,  F15B2211/61 ,  Y10T137/0324 ,  Y10T137/7722

摘要： An aspect of the present disclosure relates to a steering system having first and second steering circuits in fluid communication with a fluid actuator wherein the steering circuits are disposed in parallel to each other. The second steering circuit includes a proportional valve having a load-sense feature in selective fluid communication with a load-sense connection and the first steering circuit. The load-sense feature is open to the first steering circuit when the proportional valve is in a neutral position and closed to the first steering circuit when the proportional valve is moved to a first or second steering position. When the proportional valve is actuated from the neutral position to the first or second steering position the movement of the proportional valve closes the load sense feature from the first steering circuit and operates to deactivate the first steering circuit.

摘要翻译： 本公开的一个方面涉及一种具有与流体致动器流体连通的第一和第二转向回路的转向系统，其中转向回路彼此平行设置。 第二转向回路包括比例阀，其具有与负载感测连接和第一转向回路选择性流体连通的负载感测特征。 当比例阀处于中立位置时，当比例阀移动到第一或第二转向位置时，负载感测特征对于第一转向回路是开放的。 当比例阀从中立位置致动到第一或第二转向位置时，比例阀的运动关闭来自第一转向回路的负载感测特征，并且操作以使第一转向回路失效。

公开(公告)号：US5573036A

公开(公告)日：1996-11-12

申请号：US585360

申请日：1996-01-11

申请人： Don B. Porter ,  Stephen B. Currey

发明人： Don B. Porter ,  Stephen B. Currey

IPC分类号： F15B9/08 ,  F15B13/043

CPC分类号： F15B9/08 ,  F15B13/043 ,  Y10T137/86606 ,  Y10T137/86614

摘要： The invention is a multi-stage electro-hydraulic servovalve having a mechanical feedback between the valve's main and pilot stages. The feedback mechanism makes use of an interconnected set of linkages that transform a linear motion of the main stage slide into a rotative movement of a torque rod that can produce a translation of the pilot stage slide. Many of the linkages of the feedback mechanism are located exterior to the valve's fluid boundary and feature readily adjustable connections through which a user can adjust various parameters of the feedback such as the degree of gain and null point.

摘要翻译： 本发明是一种多级电动液压伺服阀，其具有在阀的主级和引导级之间的机械反馈。 反馈机构利用一组相互连接的连接装置，其将主载玻片的直线运动转换成可产生导频台滑块的平移的扭矩杆的旋转运动。 反馈机构的许多连接位于阀的流体边界的外部，并且具有易于调节的连接，用户可以通过该连接来调整反馈的各种参数，例如增益和零点的程度。

公开(公告)号：US4574687A

公开(公告)日：1986-03-11

申请号：US717541

申请日：1985-03-29

申请人： Wolfgang Kauss ,  Heinz Schulte ,  Kurt Wittich

发明人： Wolfgang Kauss ,  Heinz Schulte ,  Kurt Wittich

IPC分类号： F15B9/08 ,  F15B13/042

CPC分类号： F15B9/08

摘要： An apparatus for positioning an adjustable member as a function of a command signal and a control condition, especially for the positioning of a hoisting mechanism on a tractor or the like, comprises an operating circuit and a control circuit. The operating circuit has a bidirectional positionable valve with a valve side and first and second control devices for regulating flow of pressure medium from a supply tank to the adjustable member. The control circuit connects a control pressure medium source to the control devices at first and second junctions and includes adjustable throttles and a flow-regulating valve. A first adjustable throttle is connected between the supply tank and the first junction. The second adjustable throttle is connected between the control pressure medium source and the first junction and in series with the first adjustable throttle. Third and fourth throttles are connection in series with the third throttle being connected between the supply tank and the second junction, and with the fourth adjustable throttle being connected between the control pressure medium source and the second junction. The flow regulating device is connected between the control pressure medium source and the first junction in parallel with the second adjustable throttle such that the flow regulating valve can be located in a remote location from the remaining controls, permitting remote operation of the adjustable member.

摘要翻译： 根据指令信号和控制条件，特别是用于将牵引机构定位在拖拉机等上的可调节构件的定位装置包括操作电路和控制电路。 操作电路具有带阀侧的双向定位阀和用于调节压力介质从供应罐到可调节构件的流动的第一和第二控制装置。 控制电路在第一和第二连接处将控制压力介质源连接到控制装置，并且包括可调节节流阀和流量调节阀。 第一个节流阀连接在供水箱和第一个接头之间。 第二可调节流阀连接在控制压力介质源和第一连接点之间并与第一可调节流阀串联。 第三和第四节流阀与第三节流阀串联连接在供应罐和第二连接点之间，第四节流阀连接在控制压力介质源和第二连接点之间。 流量调节装置与第二可调节流阀平行地连接在控制压力介质源和第一连接点之间，使得流量调节阀可以位于远离其余控制器的远处，允许可调节构件的远程操作。

公开(公告)号：US4539891A

公开(公告)日：1985-09-10

申请号：US591151

申请日：1984-03-19

申请人： Peter V. Colan ,  Kenneth L. Miller ,  Henry P. Tyler

发明人： Peter V. Colan ,  Kenneth L. Miller ,  Henry P. Tyler

IPC分类号： F15B9/08 ,  F15B15/17

CPC分类号： F15B9/08

摘要： A servo booster mechanism (18) having a piston (48) responsive to movement of a plunger (84) by an input signal for controlling the rate of fluid flow past a seat (82) into a passage (80) for distribution to the surrounding environment. A first restrictor (75) creates a first pressure drop in a supply fluid pressure P.sub.s to present an operational chamber (46) with fluid at a pressure P.sub.x. A second restrictor (openings 74-76) creates a second pressure drop in fluid pressure P.sub.x supplied from the operational chamber (46) to present control chamber (88) with fluid at a pressure P.sub.h. The difference in pressures combine to act on the piston (48) and plunger (84) to provide a constant force at stem (26), which provides a feedback to the input member (12), and provide a linkage (22) with a force to hold a position sensor (24) in a stationary position.

摘要翻译： 一种伺服增压机构（18），其具有响应于柱塞（84）通过输入信号的运动的活塞（48），用于控制流体流过座（82）进入通道（80）的速率以分配给周围 环境。 第一限制器（75）在供给流体压力Ps中产生第一压力下降，以在压力Px下呈现流体的操作室（46）。 第二限制器（开口74-76）产生从操作室（46）提供的流体压力Px到当前控制室（88）的压力为Ph的流体的第二压降，压力差作用在活塞上 （48）和柱塞（84）以在杆（26）处提供恒定的力，其向输入构件（12）提供反馈，并且提供具有将位置传感器（24）保持在其中的力的联动装置（22） 静止位置。