公开(公告)号：US11692563B2

公开(公告)日：2023-07-04

申请号：US16774280

申请日：2020-01-28

申请人： CATERPILLAR PAVING PRODUCTS INC.

发明人： Eric S. Engelmann ,  Conwell K. Rife, Jr. ,  Mark Holub

IPC分类号： F15B15/28 ,  E01C23/088

CPC分类号： F15B15/2838 ,  E01C23/088 ,  F15B2211/4053

摘要： A milling machine may have a frame, a milling drum attached to the frame, and ground engaging tracks that support the frame and propel the milling machine in a forward or rearward direction. The milling machine may have height adjustable actuators connecting the frame to the tracks. Each actuator may have a cylinder attached to the frame, a piston slidably disposed within the cylinder, and a rod connected at a first end to the piston and connected to a track at a second end. The milling machine may have a tank storing hydraulic fluid and a fluid conduit connecting the tank to the cylinder. The milling machine may have a control valve selectively controlling a flow rate of the hydraulic fluid in the fluid conduit. The milling machine may also have a controller that determines a height of the frame relative to the ground surface based on the flow rate.

公开(公告)号：US09951799B2

公开(公告)日：2018-04-24

申请号：US14438441

申请日：2013-09-20

申请人： PASCAL ENGINEERING CORPORATION

发明人： Takayuki Kawakami

IPC分类号： F15B15/26 ,  F15B15/28 ,  B23Q3/08 ,  B23Q17/00 ,  B25B5/06 ,  F15B15/06

CPC分类号： F15B15/2838 ,  B23Q3/082 ,  B23Q17/005 ,  B25B5/062 ,  F15B15/06 ,  F15B15/2807 ,  F15B2211/6306

摘要： An open/shut valve mechanism for detecting that a piston member of a hydraulic pressure cylinder has reached an unclamp position comprises: a valve body reception hole that communicates with a unclamp hydraulic pressure operating chamber, a valve body movably received in the valve body reception hole and having an annular concave engagement portion on its external circumferential portion; a spherical body that is movably installed in a cylinder main body and that can engage with the concave engagement portion; and an engagement portion that is formed on an auxiliary rod and with which the spherical body can engage; and when hydraulic pressure is charged into the unclamp hydraulic pressure operating chamber and the piston member has reached its unclamp position, the valve body receives the hydraulic pressure, a portion of the spherical body engages to the engagement portion and the valve body changes over to the valve closed position; and, when the piston member has shifted from its unclamp position, the spherical body engages with the annular concave engagement portion without engaging to the engagement portion, so that the valve body is held in its open position.

公开(公告)号：US09778069B2

公开(公告)日：2017-10-03

申请号：US14404425

申请日：2013-05-27

申请人： FMC Kongsberg Subsea AS

发明人： Ole Vidar Jonsjord

IPC分类号： G01D5/14 ,  E21B33/035 ,  F15B15/28

CPC分类号： G01D5/14 ,  E21B33/0355 ,  F15B15/2838

摘要： A method and an apparatus (280) for determining an estimate of a position of a hydraulic subsea actuator (200), wherein the hydraulic subsea actuator (200) has a fluid port (220) fluidly connected to a fluid source (260). The apparatus (280) comprises a hydraulic cylinder (310) connected in series between the fluid source (260) and the fluid port (220) of the hydraulic subsea actuator, and a movable piston (320) arranged in the second hydraulic cylinder (310), a position determining device, arranged to determine a position of the movable piston (320), and a signal processing device (350), arranged to calculate the estimate of the position of the hydraulic subsea actuator based on the position of the movable piston.

公开(公告)号：US09482247B2

公开(公告)日：2016-11-01

申请号：US14106250

申请日：2013-12-13

申请人： Curtiss-Wright Flow Control Corporation

发明人： Abraham Shelcoviz ,  Tsolag Apelian

IPC分类号： F15B15/28

CPC分类号： F15B15/2838 ,  F15B2211/6313 ,  F15B2211/89

摘要： A piston of an apparatus is movable within a cavity between a first position wherein a pressure port is in fluid communication with the first fluid chamber and a second position wherein the pressure port is in fluid communication with the second fluid chamber. In further examples, apparatus comprise an expansion chamber that is isolated from the first fluid chamber in a first condition and the expansion chamber is in fluid communication with the first fluid chamber in a second condition. In further examples, methods of operating an apparatus include the step (I) of applying fluid pressure to at least one of the first fluid chamber and the second fluid chamber, and the step (II) of determining a position of the piston within the cavity based on the applied fluid pressure.

摘要翻译： 设备的活塞可以在第一位置和第二位置之间的空腔内移动，第一位置和第二位置之间，其中压力端口与第一流体室流体连通，其中压力端口与第二流体室流体连通。 在另外的实施例中，装置包括在第一状态下与第一流体室隔离的膨胀室，并且膨胀室在第二状态下与第一流体室流体连通。 在另外的实例中，操作设备的方法包括向第一流体室和第二流体室中的至少一个施加流体压力的步骤（I），以及确定活塞在空腔内的位置的步骤（II） 基于所施加的流体压力。

公开(公告)号：US09383024B2

公开(公告)日：2016-07-05

申请号：US13988172

申请日：2011-11-08

申请人： Salvatore Giannotta

发明人： Salvatore Giannotta

IPC分类号： F16K17/02 ,  F15B15/28 ,  F16K31/122 ,  F16K37/00

CPC分类号： F16K17/02 ,  F15B15/2838 ,  F16K31/1221 ,  F16K37/0066 ,  Y10T137/0396 ,  Y10T137/7793

摘要： A valve, for example for controlling a clearance at a tip of turbine blades, includes a piston and a supply mechanism supplying fluid under pressure to cause the piston to move inside a hollow body, and a mechanism detecting a position of the piston, including a shut-off element that moves as one with the piston and is mounted such that it can move in a fluid passage between two positions, open and closed respectively, the fluid passage connecting the supply mechanism to a pressure sensor that generates an output signal representative of the position of the piston of the valve.

摘要翻译： 例如用于控制涡轮机叶片尖端的间隙的阀包括活塞和供应机构，其在压力下供应流体以使活塞在中空体内移动，以及检测活塞位置的机构，包括 关闭元件，其与活塞一体移动并且被安装成使得其可以分别在打开和关闭的两个位置之间的流体通道中移动，流体通道将供应机构连接到压力传感器，压力传感器产生代表 活塞阀的位置。

公开(公告)号：US06925807B2

公开(公告)日：2005-08-09

申请号：US10628602

申请日：2003-07-28

申请人： Franklin B. Jones ,  Stuart A. Jones

发明人： Franklin B. Jones ,  Stuart A. Jones

IPC分类号： E21B3/02 ,  E21B43/00 ,  F15B9/09 ,  F15B9/17 ,  F15B11/16 ,  F15B15/28 ,  F15B21/08 ,  E21B1/00

CPC分类号： F15B21/087 ,  E21B3/02 ,  F15B9/09 ,  F15B9/17 ,  F15B11/16 ,  F15B15/2815 ,  F15B15/2838 ,  F15B2211/20515 ,  F15B2211/327 ,  F15B2211/6336 ,  F15B2211/6651 ,  F15B2211/6654 ,  F15B2211/7142

摘要： An apparatus and method for controlling an actuator system having an electrical actuator in hydraulic communication with a hydraulic actuator are described. The apparatus includes a controller module in communication with a source of electrical power and a transceiver. The transceiver is adapted for bi-directional wireless communication with a remote transceiver for the transfer of control data and feedback data. The controller module sends a control signal to the electrical actuator in response to control data received from the remote transceiver. The source of electrical power includes a hydraulic motor and an electrical generator to provide local electrical power from a hydraulic flow. Because the electrical power is generated locally and the control and feedback data are carried over the wireless link, no wires to remote locations are required.

摘要翻译： 描述了一种用于控制具有与液压致动器液压连通的电致动器的致动器系统的装置和方法。 该装置包括与电源和收发器通信的控制器模块。 收发器适用于与远程收发器的双向无线通信，用于传送控制数据和反馈数据。 响应于从远程收发器接收的控制数据，控制器模块向电致动器发送控制信号。 电力源包括液压马达和发电机，以从液压流提供局部电力。 因为电力是本地生成的，并且控制和反馈数据通过无线链路承载，所以不需要到远程位置的电线。

公开(公告)号：US06746228B2

公开(公告)日：2004-06-08

申请号：US10041627

申请日：2002-01-10

申请人： Peter Sattler ,  Udo Liebram

发明人： Peter Sattler ,  Udo Liebram

IPC分类号： B29C4523

CPC分类号： B29C45/281 ,  B29C2045/2848 ,  B29C2045/2865 ,  F15B15/2838

摘要： An injection molding device (1) including an actuating cylinder (15) with a piston (33). A valve pin (11) is actuated by the cylinder (15), the piston including a fluid passage (55) via which pressure medium can pass when the piston is in a position between its upper and its lower end position, and which is at least partly closed off when the piston is in its lower and/or its upper end position. Hereby relatively simple position indicator of the valve pin (11) is formed.

摘要翻译： 一种注射成型装置（1），包括具有活塞（33）的致动缸（15）。 阀芯（11）由气缸（15）致动，活塞包括流体通道（55），当活塞位于其上端位置和下端位置之间时，压力介质可以通过该流体通道 当活塞处于其下部和/或其上端位置时，至少部分地封闭。 因此形成了阀销（11）的相对简单的位置指示器。

公开(公告)号：US20020178593A1

公开(公告)日：2002-12-05

申请号：US10114583

申请日：2002-04-02

申请人： YASUNAGA CORPORATION

发明人： Shinji Kuru

IPC分类号： G01F003/04

CPC分类号： F15B15/2838 ,  Y10S33/01 ,  Y10S33/15

摘要： A hydraulic system includes position sensors that are provided together with solenoid valves in fluid passages extending between a working fluid source and hydraulic actuators. Each position sensor is comprised of two gears disposed in the fluid passage so as to be rotatable by the flow of working fluid, and two sensing elements each disposed to face either one of the gears. A controller determines the operating position of each actuator based on sensor outputs that are out of phase with each other and are generated by the sensing elements each time the gears rotate for a predetermined angle.

摘要翻译： 液压系统包括位置传感器，其与在工作流体源和液压致动器之间延伸的流体通道中的电磁阀一起提供。 每个位置传感器由设置在流体通道中的两个齿轮组成，以便能够通过工作流体的流动旋转;以及两个传感元件，每个传感元件设置成面对任一个齿轮。 控制器基于彼此不同相的传感器输出来确定每个致动器的操作位置，并且每当齿轮旋转预定角度时由感测元件产生。

公开(公告)号：US20010037724A1

公开(公告)日：2001-11-08

申请号：US09801259

申请日：2001-03-07

发明人： Mark S. Schumacher ,  Terrance F. Krouth ,  David E. Wiklund

IPC分类号： F15B009/03

CPC分类号： F15B15/2838

摘要： A system and method for controlling at least one hydraulic actuator of a hydraulic system includes a flow rate measurement of a hydraulic fluid flow traveling into and out of a cavity of the hydraulic actuator. The flow rate is used to calculate piston information corresponding to a position, velocity, acceleration, and/or direction of movement of a piston of the hydraulic actuator. The piston information can then be provided to an output device to aid in the control of the hydraulic actuator. Alternatively, the piston information can be compared to a reference signal relating to a desired position, velocity, acceleration, and/or direction of movement of the piston to produce a control signal, which can be used to adjust the hydraulic fluid flow and provide the desired actuation of the piston.

摘要翻译： 用于控制液压系统的至少一个液压致动器的系统和方法包括流入和流出液压致动器的腔的液压流体流的流量测量。 流量用于计算对应于液压致动器的活塞的位置，速度，加速度和/或运动方向的活塞信息。 然后可以将活塞信息提供给输出装置以帮助控制液压致动器。 或者，可以将活塞信息与与活塞的期望位置，速度，加速度和/或运动方向相关的参考信号进行比较，以产生控制信号，该控制信号可用于调节液压流体流动并提供 所需的活塞致动。

公开(公告)号：US06269641B1

公开(公告)日：2001-08-07

申请号：US09473599

申请日：1999-12-29

申请人： Timothy Lee Dean

发明人： Timothy Lee Dean

IPC分类号： B60T1716

CPC分类号： F15B11/13 ,  E21B23/04 ,  E21B33/0355 ,  F15B15/2838

摘要： A stroke control tool for controlling the position of a subterranean well hydraulically actuated double acting piston and cylinder actuator assembly. The tool includes hydraulic fluid measuring means positioned adjacent the well and is connected to the actuator by relatively inelastic hydraulic lines so that the volume of fluid communicating between the measuring means and the actuator can accurately be measured for determining the position of the actuator.

摘要翻译： 用于控制地下井液压致动的双作用活塞和气缸致动器组件的位置的行程控制工具。 该工具包括邻近井的液压流体测量装置，并且通过相对非弹性的液压管路连接到致动器，使得能够精确地测量测量装置和致动器之间连通的流体的体积，以确定致动器的位置。