公开(公告)号：US11846306B2

公开(公告)日：2023-12-19

申请号：US17640754

申请日：2020-08-03

Applicant: SMC CORPORATION

Inventor： Youji Takakuwa ,  Akihiro Kazama ,  Hiroyuki Asahara ,  Kengo Monden

IPC: F15B15/14 ,  F15B15/20 ,  F15B15/22 ,  F15B11/06

CPC classification number: F15B15/1433 ,  F15B11/06 ,  F15B15/204 ,  F15B15/22 ,  F15B2211/3052 ,  F15B2211/30505 ,  F15B2211/40515 ,  F15B2211/40576 ,  F15B2211/40584 ,  F15B2211/40592 ,  F15B2211/411 ,  F15B2211/41527 ,  F15B2211/41581 ,  F15B2211/428 ,  F15B2211/455 ,  F15B2211/46 ,  F15B2211/6355 ,  F15B2211/67 ,  F15B2211/75 ,  F15B2211/8855

Abstract: An air cylinder in which a flow rate controller is built in, has a head cover and a rod cover. A pilot air adjustment unit guides exhaust air to a switch valve of the flow rate controller as pilot air, and the switch valve is switched by an increase in the pressure of the pilot air.

公开(公告)号：US20230339604A1

公开(公告)日：2023-10-26

申请号：US17726734

申请日：2022-04-22

Applicant: Hamilton Sundstrand Corporation

Inventor： Ryan Prescott Susca ,  Morgan O'Rorke ,  Steve Doerner

IPC: B64C25/22 ,  B64C13/50 ,  F15B1/26 ,  F15B7/00 ,  F15B21/0427

CPC classification number: B64C25/22 ,  B64C13/504 ,  F15B1/26 ,  F15B7/006 ,  F15B21/0427 ,  F15B2211/20515 ,  F15B2211/20538 ,  F15B2211/20561 ,  F15B2211/27 ,  F15B2211/3058 ,  F15B2211/411 ,  F15B2211/4159 ,  F15B2211/6343 ,  F15B2211/6651 ,  F15B2211/8752

Abstract: A hydraulic actuator system of an aircraft includes a hydraulic actuator having a housing with a piston having a piston shaft with a piston head attached thereto and arranged within the housing. The piston head divides in internal volume of the housing into an extend cavity and a retract cavity and the extend cavity is configured to be connected to low pressure fluid source. The system also includes a pressure selector unit fluidly connected to the retract cavity and configured to be connected to the low pressure fluid source and to a high pressure fluid source. The unit include three solenoids with the first and second connected in parallel to the fluid sources and the third solenoid having a third solenoid first input connected to the first solenoid output, a third solenoid second input connected to the second solenoid output, and a third solenoid output connected to the retract cavity.

公开(公告)号：US20190249692A1

公开(公告)日：2019-08-15

申请号：US16272585

申请日：2019-02-11

Applicant: HAWE HYDRAULIK SE

Inventor： Thomas WECHSEL ,  Jean-Michel SABATIER

IPC: F15B13/04 ,  B66C13/20 ,  F15B20/00

CPC classification number: F15B13/0402 ,  B66C13/20 ,  B66C13/42 ,  F15B11/20 ,  F15B20/00 ,  F15B20/008 ,  F15B2211/3056 ,  F15B2211/30585 ,  F15B2211/30595 ,  F15B2211/411 ,  F15B2211/41545 ,  F15B2211/7142 ,  F15B2211/8636 ,  F15B2211/8643 ,  F15B2211/8752

Abstract: A hydraulic valve assembly includes a first spool valve and a first selector valve for actuating a first hydraulic consumer port or a second hydraulic consumer port, and a second spool valve and a second selector valve for actuating a third hydraulic consumer port or a fourth hydraulic consumer port. A shut-off valve is arranged in a common pressure channel. A branch channel with first and second pressure branch channels branches off the pressure channel upstream of the shut-off valve. The first selector valve connects the first pressure branch channel to a first connection line in a first switching position and connects the second pressure branch channel to a second connection line in a second switching position. The second selector valve, in a first switching position, connects the first connection line to the control channel and, in a second switching position, connects the second connection line to the control channel.

公开(公告)号：US20190203746A1

公开(公告)日：2019-07-04

申请号：US16311871

申请日：2017-07-05

Applicant: DANA ITALIA S.R.L.

Inventor： LUCA BALBONI ,  DAVIDE MOSER ,  FABRIZIO ZENDRI

IPC: F15B21/14 ,  F15B1/027 ,  F15B11/10 ,  E02F9/22 ,  B66C23/00

CPC classification number: F15B21/14 ,  B66C23/54 ,  E02F9/2217 ,  E02F9/2225 ,  E02F9/2267 ,  E02F9/2271 ,  E02F9/2282 ,  E02F9/2285 ,  E02F9/2296 ,  F15B1/027 ,  F15B11/10 ,  F15B2211/205 ,  F15B2211/212 ,  F15B2211/30505 ,  F15B2211/411 ,  F15B2211/428 ,  F15B2211/50563 ,  F15B2211/50581 ,  F15B2211/5756 ,  F15B2211/7053 ,  F15B2211/7058 ,  F15B2211/7142 ,  F15B2211/88 ,  F16H61/4096

Abstract: A system for recovering energy from a hydraulic actuator and to a method of operating the system are described. The system may have a hydraulic actuator and a source of hydraulic pressure, comprising a hydraulic pump, in fluid communication with the hydraulic actuator for pressurizing the hydraulic actuator. The system may also have a hydraulic accumulator assembly for selectively absorbing energy from the hydraulic actuator or via the hydraulic actuator. The system may also have a first one-way valve configured to provide fluid communication between the hydraulic actuator and the hydraulic accumulator assembly. The first one-way valve may be configured to permit a flow of fluid through the first one-way valve from the hydraulic actuator to the hydraulic accumulator assembly. The first one-way valve may also be configured to block a flow of fluid through the first one-way valve from the hydraulic accumulator assembly to the hydraulic actuator.

公开(公告)号：US20180022440A1

公开(公告)日：2018-01-25

申请号：US15214366

申请日：2016-07-19

Applicant: The Boeing Company

Inventor： Derek M. Joseph ,  Kevin B. Eck ,  Christopher D. Feet ,  Yonas T. Meshesha ,  Timothy J. Soderquist ,  Barry D. Hance

IPC: B64C13/40 ,  F15B13/04 ,  F15B13/042 ,  F15B11/08

CPC classification number: B64C13/40 ,  B64C5/02 ,  B64C5/10 ,  F15B11/08 ,  F15B2211/30565 ,  F15B2211/3111 ,  F15B2211/327 ,  F15B2211/329 ,  F15B2211/411 ,  F15B2211/41509 ,  F15B2211/428 ,  F15B2211/634 ,  F15B2211/7058 ,  F15B2211/715 ,  F15B2211/765

Abstract: Systems and methods are provided for a hydraulic stabilizer trim actuator (HSTA). The HSTA may operate one or more movable control surfaces. The HSTA operate responsive to commands issued by the pilot and/or by a controller and may include hydraulic architecture that minimizes the probability of an un-commanded movement or movement in the opposite direction of such commands.

公开(公告)号：US20170292540A1

公开(公告)日：2017-10-12

申请号：US15634219

申请日：2017-06-27

Applicant: KUBOTA CORPORATION

Inventor： Yuji FUKUDA ,  Kazuyoshi ARII ,  Hiroaki NAKAGAWA

IPC: F15B13/042 ,  F15B11/08 ,  E02F3/43 ,  F15B21/04 ,  E02F9/22 ,  F15B1/26 ,  F15B13/04

CPC classification number: F15B13/0426 ,  E02F3/3414 ,  E02F3/431 ,  E02F9/166 ,  E02F9/22 ,  E02F9/226 ,  E02F9/2275 ,  E02F9/2292 ,  E02F9/2296 ,  F15B1/26 ,  F15B11/08 ,  F15B13/0401 ,  F15B21/042 ,  F15B2211/20576 ,  F15B2211/30565 ,  F15B2211/411 ,  F15B2211/41581 ,  F15B2211/428 ,  F15B2211/62 ,  F16H61/4035 ,  F16H61/433 ,  F16H61/44

Abstract: A hydraulic system for a work machine includes a tank to store an operation fluid, a hydraulic device to be operated by the operation fluid, a control valve to control the hydraulic device, a first fluid tube connecting the hydraulic device and the control valve, the first fluid tube being to supply the operation fluid from the control valve to the hydraulic device, a second fluid tube branching from the first fluid tube and connected to the tank, a switch valve provided to the second fluid tube, the switch valve being to control a flow rate of the operation fluid, and an oil cooler provided to the second fluid tube between the switch valve and the tank.

公开(公告)号：US20170074297A1

公开(公告)日：2017-03-16

申请号：US15309129

申请日：2015-05-06

Applicant: EATON CORPORATION

Inventor： Michael William OLSON

IPC: F15B21/00 ,  B66F9/22 ,  F15B13/02 ,  F15B1/04 ,  F15B11/08

CPC classification number: F15B21/008 ,  B66F9/07 ,  B66F9/22 ,  E02F9/2217 ,  E02F9/2228 ,  E02F9/2289 ,  E02F9/2296 ,  F04B1/32 ,  F04B7/00 ,  F04B49/065 ,  F04B49/22 ,  F04B53/001 ,  F15B1/04 ,  F15B11/08 ,  F15B13/022 ,  F15B2211/411 ,  F15B2211/41509 ,  F15B2211/6313 ,  F15B2211/634 ,  F15B2211/6346 ,  F15B2211/6652 ,  F15B2211/8616

Abstract: A hydraulic pump radiant noise reduction method for a forklift or other work machine is disclosed. The method includes initiating a noise control algorithm that is enabled during periods when the displacement of the hydraulic pump remains in the zero displacement position and an operator is not demanding flow from any of the hydraulic branch circuits. When the noise control algorithm is enabled, the control valve assembly associated with the hydraulic branch circuit having the lowest hydraulic fluid pressure in relation to the hydraulic fluid pressures of all other hydraulic branch circuits is opened while the remaining control valve assemblies are in held or placed in a closed position. In an alternative embodiment, a drain valve assembly is provided that is opened when the noise control algorithm is activated.

Abstract translation: 公开了一种用于叉车或其他作业机械的液压泵辐射噪声降低方法。 该方法包括启动噪声控制算法，该算法在液压泵的位移保持在零位移位置且操作者不要求从任何液压分支回路流出的时段期间启用。 当启用噪声控制算法时，与所有其他液压分支回路的液压流体压力相关的具有最低液压流体压力的液压分支回路相关联的控制阀组件打开，而剩余的控制阀组件被保持或放置 处于关闭状态。 在替代实施例中，提供了一种排泄阀组件，其在噪声控制算法被激活时被打开。

公开(公告)号：US09587656B2

公开(公告)日：2017-03-07

申请号：US14399062

申请日：2013-04-11

Applicant: KOBELCO CONSTRUCTION MACHINERY CO., LTD.

Inventor： Koji Ueda ,  Kazuharu Tajima

IPC: F16D31/02 ,  F15B15/18 ,  F15B11/16 ,  F15B21/08 ,  E02F3/43 ,  E02F9/22 ,  F15B11/20

CPC classification number: F15B15/18 ,  E02F3/435 ,  E02F9/2235 ,  E02F9/2285 ,  E02F9/2296 ,  F15B11/167 ,  F15B11/20 ,  F15B21/08 ,  F15B2211/411 ,  F15B2211/41509 ,  F15B2211/426 ,  F15B2211/45 ,  F15B2211/6313 ,  F15B2211/6316 ,  F15B2211/6346 ,  F15B2211/665 ,  F15B2211/6652 ,  F15B2211/71 ,  F15B2211/7107 ,  F15B2211/782

Abstract: Provided is an apparatus for driving a boom of a construction machine, allowing required power to be reduced. The apparatus includes a boom cylinder, a variable-displacement hydraulic pump , a control valve guiding hydraulic oil discharged by the hydraulic pump to the boom cylinder, a boom-raising-operation detector boom-cylinder pressure detectors, a supply selector valve switchable between a permitting position for permitting the hydraulic oil to be supplied from the hydraulic pump a head-side chamber of the boom cylinder and a blocking position for blocking the supply, a supply oil passage permitting hydraulic oil to be supplied to the head-side chamber during the blocking, and a controller which brings the supply selector valve into the blocking position and reduces volume of the hydraulic pump upon judging that excavation reaction force extends the boom cylinder even with no supply of hydraulic oil from the hydraulic pump to the head-side chamber.

Abstract translation: 提供了一种用于驱动施工机械的起重臂的装置，其允许减小所需的动力。 该装置包括动臂缸，可变容量液压泵，将液压泵排放到动臂缸的液压油引导的控制阀，动臂升高操作检测器悬臂液压缸压力检测器，可切换到 允许液压油从动臂缸的头侧室供给液压油，并阻止供给的阻塞位置，允许液压油通过液压油供给至头侧室的液压油 即使在没有从液压泵向头侧室供给液压油的情况下，判断出挖掘反作用力延伸动臂缸也能够使供给切换阀进入阻塞位置并减小液压泵的体积。

公开(公告)号：US20160186786A1

公开(公告)日：2016-06-30

申请号：US14974161

申请日：2015-12-18

Applicant: Robert Bosch GmbH

Inventor： Matthias Wahler

IPC: F15B11/08

CPC classification number: F15B20/00 ,  F15B2211/20515 ,  F15B2211/20561 ,  F15B2211/27 ,  F15B2211/411 ,  F15B2211/41572 ,  F15B2211/426 ,  F15B2211/6336 ,  F15B2211/634 ,  F15B2211/665 ,  F15B2211/6651 ,  F15B2211/86 ,  F15B2211/8757

Abstract: A drive control device for operating an electro-hydraulic drive which has an electric motor with a variable rotational speed, a hydraulic pump which is driven by the electric motor, a hydraulic consumer with a movable element and hydromechanical safety device which is configured to be able to interrupt a flow of hydraulic fluid between the hydraulic pump and the hydraulic consumer, comprises a controller configured to actuate the electric motor for operation, and to interrupt the operation of the electric motor. The drive control device is configured to actuate the hydromechanical safety device in such a way that the flow of hydraulic fluid between the hydraulic pump and the hydraulic consumer is interrupted.

Abstract translation: 一种驱动控制装置，用于操作具有可变转速的电动机的电动液压驱动装置，由电动机驱动的液压泵，具有可移动元件的液压消耗装置和液压机械安全装置，该装置构造成能够 以中断液压泵和液压消耗器之间的液压流体的流动，包括被配置为致动电动机以进行操作并中断电动机的操作的控制器。 驱动控制装置被构造成致动液压机械安全装置，使液压泵和液压消耗器之间的液压流体的流动被中断。

公开(公告)号：US20150354167A1

公开(公告)日：2015-12-10

申请号：US14758010

申请日：2013-12-20

Applicant: KOBELCO CONSTRUCTION MACHINERY CO., LTD.

Inventor： Naoki GOTO ,  Koji UEDA ,  Kazuharu TAJIMA

IPC: E02F3/42 ,  E02F3/32 ,  E02F9/22 ,  F15B11/17 ,  F15B13/06

CPC classification number: E02F3/425 ,  E02F3/32 ,  E02F9/2235 ,  E02F9/2242 ,  E02F9/2267 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296 ,  F15B11/17 ,  F15B13/06 ,  F15B2211/20538 ,  F15B2211/20546 ,  F15B2211/20576 ,  F15B2211/30565 ,  F15B2211/31535 ,  F15B2211/411 ,  F15B2211/41509 ,  F15B2211/6313 ,  F15B2211/665 ,  F15B2211/71

Abstract: A boom cylinder circuit is provided with a boom control valve for controlling supply and discharge of hydraulic oil to and from a boom cylinder, and a merge switching valve operable to be switched between a supply position at which hydraulic oil is suppliable from a first hydraulic pump to the boom control valve, and a blocking position at which a flow of hydraulic oil is blocked. A controller switches the merge switching valve to the blocking position when a combined operation of a boom lowering operation and an arm pushing operation is detected by pilot pressure sensors, and switches the merge switching valve to the supply position when only one of the boom lowering operation and the arm pushing operation is detected.

Abstract translation: 动臂气缸回路设置有用于控制来自动臂液压缸的液压油的供给和排出的起重臂控制阀，以及合并切换阀，其可操作以在从第一液压泵供给液压油的供给位置之间切换 到动臂控制阀，以及阻塞液压油流动的阻塞位置。 当通过先导压力传感器检测到动臂下降操作和手臂按压操作的组合操作时，控制器将合并切换阀切换到阻挡位置，并且当只有一个起重臂下降操作时将合并切换阀切换到供给位置 并且检测到手臂按压操作。