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公开(公告)号：US20240309894A1
公开(公告)日：2024-09-19
申请号：US18601864
申请日：2024-03-11
IPC分类号： F15B15/08 , B23K20/10 , B23K101/00 , F15B13/16
CPC分类号： F15B15/08 , B23K20/10 , F15B13/16 , B23K2101/003 , F15B2211/526 , F15B2211/605 , F15B2211/6303
摘要： Systems, devices, and methods for a self-sensing fluid-driven extending actuation device and associated methods where a fluid controller adds fluid into or removes fluid from a coiled device made from sealed flat layers of material; the pressurized fluid expands the internal volume of the layers causing the device to partially un-coil and extend; a resistance measurement circuit measures the length of the extended section and uses it to control the fluid added or removed from the device to achieve a desired length.
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公开(公告)号：US11761465B2
公开(公告)日：2023-09-19
申请号：US17535319
申请日：2021-11-24
申请人： GRUNDFOS HOLDING A/S
摘要： A hydraulic system includes at least one hydraulic unit (2) having at least one flow path (14, 16, 18), an hydraulic actuator (22), provided for influencing a hydraulic flow through the flow path (14, 16, 18), at least one sensor device (24, 26), and a control device (10) for controlling the hydraulic actuator (22). The at least one sensor device (24, 26) includes a storage device (32) provided for containing information specifying the hydraulic unit (2). The control device (10) is configured to receive the information stored in the storage device (32) of the sensor device (24, 26) and to set up a control of the hydraulic actuator (22) based on the received information specifying the hydraulic unit (2). A method is provided for controlling the hydraulic actuator.
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公开(公告)号：US09822804B2
公开(公告)日：2017-11-21
申请号：US14994340
申请日：2016-01-13
申请人： YOUNG TECH CO., LTD.
发明人： Du Gi Min
CPC分类号： F15B13/16 , F15B5/003 , F15B2211/30575 , Y10T137/2278 , Y10T137/87209
摘要： Provided is a double nozzle type positioner, which includes a flapper (1), a first nozzle (2) and a second nozzle (3) disposed at both sides based on the flapper (1), a first orifice (4) configured to maintain a constant pressure of the first nozzle (2), a second orifice (5) configured to maintain a constant pressure of the second nozzle (3), a first pilot valve (6) having an input portion connected to a feed pressure, a second pilot valve (7) having an input portion connected to an output portion of the first pilot valve (6), a discharge hole (8) connected to an output portion of the second pilot valve (7), and an actuator (9) connected to the output portion of the first pilot valve (6) and the input portion of the second pilot valve (7). If the first nozzle (2) is opened due to the movement of the flapper (1), the second nozzle (3) is closed, and if the first nozzle (2) is closed, the second nozzle (3) is opened.
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公开(公告)号：US20130297045A1
公开(公告)日：2013-11-07
申请号：US13939963
申请日：2013-07-11
申请人： Eaton Corporation
发明人： QingHui Yuan , Christy Schottler , Wade Gehlhoff , Hong Singhania
IPC分类号： G05B13/02
CPC分类号： G05B13/021 , F15B13/0433 , F15B13/16 , G05D7/0652 , G05D16/2093
摘要： A flow control valve includes a housing that includes a fluid inlet, a fluid outlet, a first work port and a second work port. The housing defines a spool bore and a pilot spool bore. A main stage spool is disposed in the spool bore. A pilot stage spool is disposed in the pilot spool bore. The pilot stage spool is in selective fluid communication with the main stage spool. A microprocessor includes a controller having a restricted structured controller and a compensation controller. Outputs of the restricted structured controller and the compensation controller are summed to form an electrical signal that is communicated to the pilot stage spool.
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公开(公告)号：US08239069B2
公开(公告)日：2012-08-07
申请号：US12483091
申请日：2009-06-11
申请人： QingHui Yuan , Chris Schottler , Wade Gehlhoff , Hong Singhania
发明人： QingHui Yuan , Chris Schottler , Wade Gehlhoff , Hong Singhania
CPC分类号： G05B13/021 , F15B13/0433 , F15B13/16 , G05D7/0652 , G05D16/2093
摘要： A flow control valve includes a housing that includes a fluid inlet, a fluid outlet, a first work port and a second work port. The housing defines a spool bore and a pilot spool bore. A main stage spool is disposed in the spool bore. A pilot stage spool is disposed in the pilot spool bore. The pilot stage spool is in selective fluid communication with the main stage spool. A microprocessor includes a controller having a restricted structured controller and a compensation controller. Outputs of the restricted structured controller and the compensation controller are summed to form an electrical signal that is communicated to the pilot stage spool.
摘要翻译： 流量控制阀包括壳体，其包括流体入口，流体出口，第一工作端口和第二工作端口。 壳体限定滑阀孔和导向滑阀孔。 主滑阀设置在滑阀孔中。 先导级阀芯设置在先导阀芯孔中。 引导级阀芯与主级阀芯选择性流体连通。 微处理器包括具有限制结构化控制器和补偿控制器的控制器。 限制结构化控制器和补偿控制器的输出相加，形成一个电信号，该电信号被传送到先导级线轴。
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6.发明授权公开(公告)号：US07487707B2
公开(公告)日：2009-02-10
申请号：US11535505
申请日：2006-09-27
IPC分类号： F15B11/024 , E02F9/22
CPC分类号： F15B11/165 , F15B11/003 , F15B11/024 , F15B11/0445 , F15B11/05 , F15B13/0402 , F15B13/0433 , F15B13/0435 , F15B13/16 , F15B2211/20546 , F15B2211/253 , F15B2211/30555 , F15B2211/329 , F15B2211/5059 , F15B2211/6054 , F15B2211/6309 , F15B2211/6313 , F15B2211/6346 , F15B2211/7053 , F15B2211/8636
摘要： A hydraulic circuit controls flow of fluid between first and second ports of a hydraulic actuator, such as a cylinder/piston arrangement and each of a supply conduit and a tank return conduit. The hydraulic circuit operates in standard powered operating modes as well as powered and unpowered regeneration modes. In a powered operating mode, a conventional pressure compensated spool valve determines the velocity of the hydraulic actuator. A workport blocking valve connects one workport of the spool valve to the first port and the other workport is connected to the second port. A regeneration shunt valve is directly connected between the first and second ports of the hydraulic actuator. In a regeneration operating mode or a mix of powered and regeneration modes, a combination of the spool valve, the workport blocking valve, and the regeneration shunt valve determines the velocity of the hydraulic actuator.
摘要翻译： 液压回路控制液压致动器的第一和第二端口之间的流体流动，例如气缸/活塞装置以及供应管道和罐返回管道中的每一个。 液压回路在标准动力运行模式以及动力和无动力再生模式下运行。 在动力操作模式中，传统的压力补偿滑阀确定液压致动器的速度。 工作端口截止阀将滑阀的一个工作端口连接到第一端口，另一个工作端口连接到第二端口。 再生分流阀直接连接在液压执行器的第一和第二端口之间。 在再生操作模式或动力和再生模式的混合中，滑阀，工作端口阻塞阀和再生分流阀的组合决定了液压致动器的速度。
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7.发明授权Tractor and towed implement with elevation control system for implement including pressure responsive valve actuator 失效拖拉机和牵引式工具，具有升降控制系统，包括压力响应阀执行器
公开(公告)号：US4637474A
公开(公告)日：1987-01-20
申请号：US566755
申请日：1983-12-29
申请人： Willie B. Leonard
发明人： Willie B. Leonard
IPC分类号： F15B9/08 , F15B13/043 , F15B13/16 , A01B63/112
CPC分类号： F15B9/08 , F15B13/043 , F15B13/16
摘要： The elevation of a tool carried by an implement towed by a tractor is determined by a hydraulic motor mounted on the implement adjusting the wheel height. A servo valve mounted on the tractor responsive to line pressure controls the hydraulic motor. An operator actuated vent valve mounted on the tractor vents line pressure to control the servo valve. A tool elevation responsive feedback vent valve mounted on the implement increasingly vents line pressure as the hydraulic motor changes tool elevation, to negate the effect of venting by the operator actuated vent valve. When hydraulic motor movement equals movement of the operator actuated vent valve, the feedback venting equals that of the operator actuated bent valve. A second negative feedback on the servo motor pistons then returns the servo valve to neutral closed position and change in tool elevation stops. A load sensor in the connection between the tractor and towed implement responds to tension in excess of an adjustable pressure determined tension to raise the tool until the tension drops, whereupon the tool level returns to its initial level. The direction of the tool may also be varied in response to the speed of the tractor motor.
摘要翻译： 由拖拉机牵引的工具承载的工具的高度由安装在调节车轮高度的工具上的液压马达确定。 响应于管路压力安装在拖拉机上的伺服阀控制液压马达。 安装在拖拉机通风口管路压力上的操作者致动排气阀来控制伺服阀。 当液压马达改变工具升高时，安装在工具上的工具升程响应反馈排气阀越来越多地排出管路压力，以消除操作者致动排气阀排气的影响。 当液压马达运动等于操作者致动排气阀的运动时，反馈排气等于操作者致动弯曲阀的反馈排气。 然后伺服电机活塞上的第二个负反馈将伺服阀返回至中性关闭位置，并改变刀具高度停止。 在拖拉机和牵引式工具之间的连接中的负载传感器响应超过可调压力确定的张力的张力，以升高工具直到张力下降，于是工具水平返回到其初始水平。 工具的方向也可以响应于牵引电动机的速度而变化。
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公开(公告)号：US4404897A
公开(公告)日：1983-09-20
申请号：US27668
申请日：1979-04-06
申请人： Willie B. Leonard
发明人： Willie B. Leonard
IPC分类号： F15B9/08 , F15B13/043 , F15B13/16 , F01B3/00 , F15B9/10
CPC分类号： F15B13/16 , F15B13/043 , F15B9/08 , Y10T137/86606
摘要： Two fluid passages are connected through flow restrictors to a fluid supply. Downstream of the restrictors the fluid supply has a drooping pressure-load characteristic. Venting means for the fluid passages comprises vent openings therein downstream of the restrictors and variable position obstructor means cooperating with vent openings to vary venting and thereby vary fluid pressures in the fluid passages.Fluid conduits connect these pressure outputs to a double acting piston moving in a cylinder whose opposite ends are connected to the fluid conduits. The piston and cylinder form the responder of the system.A receiver is formed by a piston and cylinder or other fluidic motor remotely fluidically connected to the responder, the motor driving a load.A feedback means controlled by the position of the responder piston and/or the load varies pressure in the fluid conduits by variably venting same.Both rotary and linear types of transmitters and load feedback means and receivers may be used.The transmitter may vary the pressure in each of two lines, but directly varying the pressure in only one line at a time, and may be operated by a single control or by two controls, each varying the pressure in one line, or by one control varying the restriction and the other selecting the line, and may be used to operate a swash plate pump/motor load, with pressure override and emergency stop controls.The responder may form an annular space between each piston land and either side of a cylinder flange.
摘要翻译： 两个流体通道通过限流器连接到流体供应源。 在限流器的下游，流体供应具有下垂的压力 - 负载特性。 用于流体通道的通风装置包括在限流器下游的通气开口，以及可变位置阻挡器装置，与通气口配合，以改变排气，从而改变流体通道中的流体压力。 流体管道将这些压力输出连接到在气缸中移动的双作用活塞，其两端连接到流体导管。 活塞和气缸形成系统的响应器。 接收器由活塞和气缸或其他流体电动机远程流体连接到响应器，马达驱动负载。 通过响应器活塞和/或负载的位置控制的反馈装置通过可变地排气来改变流体管道中的压力。 可以使用旋转和线性类型的发射器和负载反馈装置和接收器。 发射器可以改变两条线路中的每一条线路的压力，但是一次只能直接改变一条线路的压力，并且可以由单个控制器或两个控制器来操作，每个控制器改变一条线路中的压力，或者通过一个控制器 改变限制，另一个选择线路，并可用于操作斜盘泵/电机负载，具有压力超驰和紧急停止控制。 响应者可以在每个活塞平台和气缸凸缘的任一侧之间形成环形空间。
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9.再颁专利
公开(公告)号：USRE31107E
公开(公告)日：1982-12-21
申请号：US226574
申请日：1981-01-19
申请人： John J. Kass , Donald O. Johannsen
发明人： John J. Kass , Donald O. Johannsen
CPC分类号： F04B49/002 , F04B1/324 , F15B13/16
摘要： A hydrostatic pump unit is located within a housing which serves also as a hydraulic fluid sump. A displacement control valve for controlling actuators for adjusting the angular position of a swashplate of the pump unit is mounted on the exterior of the housing. Disposed along the axis about which the swashplate is adjustable and joining the swashplate to a shiftable sleeve of the control valve is a feedback shaft which acts to return the valve to a null condition when the swashplate arrives at a commanded new displacement effecting position. The feedback shaft has a passage extending therethrough which acts as a drain connection between the valve and the sump defined by the housing. A check valve is located in the passage for preventing fluid from draining from the housing when the valve is disconnected from the feedback shaft for service.
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公开(公告)号：US4133250A
公开(公告)日：1979-01-09
申请号：US808877
申请日：1977-06-22
申请人： Richard P. Heintz
发明人： Richard P. Heintz
CPC分类号： F15B13/16
摘要： A combined feedback control system for a servo actuator including a ram that produces a mechanical displacement output of the system as directed by a position command signal. In the combined feedback control system a lever arrangement mechanically combines displacement and velocity information of the ram, and such combined information is conveniently transduced and electrically combined with the position command signal to develop an error signal that controls an electro-hydraulic valve. The latter preferably through a fluid amplification stage controls the delivery of fluid to the ram and, thus, the position thereof. Through the lever arrangement a mechanical failure control is operative to move the ram to a predetermined position upon failure of the electro-hydraulic valve and a manual control is operable to control the ram position via the fluid amplification stage.
摘要翻译： 一种用于伺服致动器的组合反馈控制系统，其包括在由位置指令信号指示的情况下产生系统的机械位移输出的压头。 在组合反馈控制系统中，杠杆装置机械地组合压头的位移和速度信息，并且这种组合信息被方便地传导并与位置指令信号电气组合，以产生控制电动液压阀的误差信号。 后者优选地通过流体放大级控制流体输送到冲头，从而控制其位置。 通过杠杆装置，机械故障控制可操作以在电动液压阀失效时将压头移动到预定位置，并且手动控制可操作以经由流体放大级来控制压头位置。
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