公开(公告)号：US20240200580A1

公开(公告)日：2024-06-20

申请号：US18286568

申请日：2022-03-25

Applicant: Schaeffler Technologies AG & Co. KG

Inventor： Peter Greb ,  Marco Grethel ,  Peter Biegert

IPC: F15B13/01 ,  F15B11/08 ,  F15B21/00

CPC classification number: F15B13/01 ,  F15B11/08 ,  F15B21/001

Abstract: The disclosure relates to a hydraulic system including a reversing pump which has two delivery connections via which a hydraulic medium can be delivered from a tank in opposite delivery directions in order to hydraulically actuate an actuating element and supply a cooling and/or lubricating system. The hydraulic system also includes a valve assembly via which an actuating piston in a double-acting actuating cylinder can be supplied with hydraulic medium.
A first delivery connection of the reversing pump is fluidly connected to a first pressure connection of the double-acting actuating cylinder. A second delivery connection of the reversing pump is fluidly connected to a second pressure connection of the double-acting actuating cylinder. The actuating piston is mechanically coupled to a valve piston of a valve, and the valve piston is mechanically coupled to a locking device and to the actuating element.

公开(公告)号：US20240110581A1

公开(公告)日：2024-04-04

申请号：US18265134

申请日：2021-11-29

Applicant: HD Hyundai Infracore Co., Ltd.

Inventor： Yong Lak CHO

IPC: F15B13/042 ,  E02F9/22 ,  F04B49/08 ,  F15B13/04 ,  F15B21/00

CPC classification number: F15B13/042 ,  E02F9/2278 ,  F04B49/08 ,  F15B13/04 ,  F15B21/001

Abstract: A hydraulic system comprises: a hydraulic pump that includes an swash plate; an swash plate angle sensor for measuring the angle of the swash plate; an swash plate driving piston for moving the swash plate of the hydraulic pump in response to changes in pressure applied to a large diameter section; an swash plate control hydraulic line for supplying the large diameter section with a portion of the hydraulic oil discharged by the hydraulic pump; a control valve that controls the flow rate of the hydraulic oil that is following into and out of the large diameter section; an electro-proportional pressure reducing valve for producing pilot pressure that is to be transmitted to one side of the control valve; and a control device for controlling the electro-proportional pressure reducing valve according to an operation signal of an operation device and the angle information from the swash plate angle sensor.

公开(公告)号：US09849926B2

公开(公告)日：2017-12-26

申请号：US14339267

申请日：2014-07-23

Applicant: Google Inc.

Inventor： John Aaron Saunders ,  Michael Murphy ,  Steven D. Potter

IPC: B62D57/032 ,  B25J18/00 ,  F15B21/00 ,  G05D1/02 ,  G05D16/20 ,  F15B13/04

CPC classification number: B62D57/032 ,  B25J9/1612 ,  B25J18/00 ,  F15B13/0406 ,  F15B21/001 ,  F15B2211/20523 ,  F15B2211/20538 ,  F15B2211/20576 ,  F15B2211/25 ,  F15B2211/265 ,  F15B2211/5151 ,  F15B2211/5152 ,  F15B2211/625 ,  F15B2211/6309 ,  F15B2211/6336 ,  F15B2211/6651 ,  F15B2211/6653 ,  G05D1/021 ,  G05D16/2006 ,  G05D16/2066 ,  G05D2201/0217

Abstract: A robotic device may traverse a path in a direction of locomotion. Sensor data indicative of one or more physical features of the environment in the direction of locomotion may be received. The implementation may further involve determining that traversing the path involves traversing the one or more physical features of the environment. Based on the sensor data indicative of the one or more physical features of the environment in the direction of locomotion, a hydraulic pressure to supply to the one or more hydraulic actuators to traverse the one or more physical features of the environment may be predicted. Before traversing the one or more physical features of the environment, the hydraulic drive system may adjust pressure of supplied hydraulic fluid from the first pressure to the predicted hydraulic pressure.

公开(公告)号：US09651062B2

公开(公告)日：2017-05-16

申请号：US14405535

申请日：2013-11-18

Applicant: KAYABA INDUSTRY CO., LTD.

Inventor： Masayuki Kobayashi

IPC: F16D31/02 ,  F15B11/08 ,  F15B11/17 ,  E02F9/20 ,  E02F9/22 ,  F15B21/14 ,  F15B21/00 ,  F15B21/08

CPC classification number: F15B11/08 ,  E02F9/2075 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296 ,  F15B11/17 ,  F15B21/001 ,  F15B21/08 ,  F15B21/14 ,  F15B2211/20546 ,  F15B2211/20569 ,  F15B2211/20576 ,  F15B2211/30595 ,  F15B2211/60 ,  F15B2211/6316 ,  F15B2211/7053 ,  F15B2211/7058 ,  F15B2211/7135 ,  F15B2211/7142 ,  F15B2211/761

Abstract: A construction machine having an actuator that is driven by a working fluid includes a state value detection unit that detects a state value indicating an operating condition of the actuator, a mode determination unit that determines an operating mode by comparing the state value with a determination condition value, and a condition value setting unit that modifies the determination condition value on the basis of a comparison result of the mode determination unit. The condition value setting unit sets the determination condition value such that the determination condition value is increased when the state value falls below the determination condition value and decreased when the state value rises above the determination condition value.

公开(公告)号：US09416871B1

公开(公告)日：2016-08-16

申请号：US14459591

申请日：2014-08-14

Applicant: Hydro-Gear Limited Partnership

Inventor： Nathan W. Bonny

IPC: F16D31/02 ,  F16H61/44 ,  F15B21/00 ,  F15B13/02

CPC classification number: F16H61/44 ,  F15B13/022 ,  F15B13/028 ,  F15B21/001 ,  F15B2211/20523 ,  F15B2211/20546 ,  F15B2211/20561 ,  F15B2211/3052 ,  F15B2211/40523 ,  F15B2211/40538 ,  F15B2211/7058 ,  F16H61/4035

Abstract: A flow divider assembly for use with a hydraulic pump provides flow to separate drive motors for use in a vehicle or other application. Flow may be provided alternatively to a first fluid side and second fluid side. A first and a second flow divider motors are in hydraulic communication with an output of a shuttle valve. A first bypass valve is connected to the first fluid side and a second bypass valve is connected to the second fluid side, and both bypass valves have an open position and a closed position. A pilot operated valve is operably connected to both flow divider motors and to both bypass valves, and the pilot operated valve has three positions and is biased to a first position. One embodiment permits the output of the system to be driven in either forward or reverse directions.

Abstract translation: 与液压泵一起使用的分流器组件提供流动以分离用于车辆或其它应用中的驱动马达。 流动可以替代地设置到第一流体侧和第二流体侧。 第一和第二分流器电动机与梭阀的输出端液压连通。 第一旁通阀连接到第一流体侧，第二旁通阀连接到第二流体侧，并且两个旁通阀具有打开位置和关闭位置。 先导操作阀可操作地连接到两个分流器电动机和两个旁通阀，并且先导操作阀具有三个位置并被偏置到第一位置。 一个实施例允许系统的输出在正向或反向方向上被驱动。

公开(公告)号：US20130219876A1

公开(公告)日：2013-08-29

申请号：US13756866

申请日：2013-02-01

Applicant: Kazuhiko MOTODOHI ,  Shinichiro IGA ,  Yasunari MURANAKA

Inventor： Kazuhiko MOTODOHI ,  Shinichiro IGA ,  Yasunari MURANAKA

IPC: F15B21/00

CPC classification number: F16H57/0435 ,  F15B21/001 ,  F16H61/0031 ,  F16H61/0206 ,  F16H2061/0037

Abstract: An automatic transmission for a hybrid vehicle comprising a first hydraulic pressure supply source driven with an internal combustion engine; a second hydraulic pressure supply source driven independently of the first supply source; and a regulator valve regulating hydraulic pressure produced by the supply sources. A first oil passage supplying line pressure regulated by the regulator valve to a hydraulic servo operating a friction engagement element; a second oil passage supplying hydraulic pressure discharged from the regulator valve to a lubricated portion via an oil cooler; and a thud oil passage merged with the second oil passage at a point downstream of the oil cooler supplying the hydraulic pressure of the second supply source to the lubricated portion. A first reverse flow prevention mechanism is disposed between the oil cooler and the merging point to prevent reverse flow of hydraulic pressure.

Abstract translation: 一种用于混合动力车辆的自动变速器，包括由内燃机驱动的第一液压供给源; 独立于第一供应源驱动的第二液压供应源; 以及调节由供给源产生的液压的调节阀。 第一供油管路压力由调节阀调节到操作摩擦接合元件的液压伺服机构; 第二油路，其通过油冷却器将从所述调节阀排出的液压供给到润滑部; 并且在油冷却器下游的点处将第二油路与第二油路合流，将第二供给源的液压供给到润滑部。 第一反向流动防止机构设置在油冷却器和合流点之间，以防止液压反向流动。

公开(公告)号：US3819152A

公开(公告)日：1974-06-25

申请号：US28593772

申请日：1972-09-01

Applicant: CLIPPARD INSTR LAB INC

Inventor： CLIPPARD W

IPC: F15B13/00 ,  F15B13/04 ,  F15B13/08 ,  F15B21/00 ,  F16K11/07 ,  F16K27/02 ,  F16K27/04 ,  F16K11/00

CPC classification number: F15B13/0896 ,  F15B13/0402 ,  F15B13/081 ,  F15B13/0835 ,  F15B21/001 ,  F15B2013/006 ,  F16K11/07 ,  F16K27/0263 ,  F16K27/041 ,  Y10S251/90 ,  Y10T137/86879

Abstract: A spool valve of the type wherein a flexible sealing member on a movable spool valves the flow of fluid through a port in the form of a narrow annular gap extending circumferentially around the spool chamber. The port is formed by a stack of three interfitting elements, including a pair of annular elements having opposed circular internal edges that form the respective edges of the port, and an annular locator which spaces the two port edge-forming elements apart and at the same time aligns them axially. Movement of the sealing member relative to the spool which carries it enables a ''''snap action'''' valving to take place as the sealing member moves across the port.

Abstract translation: 一种滑阀，其中可移动滑阀上的柔性密封构件将流体流动通过沿着卷轴室周向延伸的窄环形间隙形式的端口。 该端口由一堆三个相互连接的元件形成，包括一对具有形成端口相应边缘的圆形内部边缘的环形元件，以及将两个端口边缘形成元件分开和相同的环形定位器 时间轴向对齐。 密封构件相对于承载其的线轴的移动使得当密封构件跨越端口移动时能够发生“快速动作”阀。

公开(公告)号：US3732892A

公开(公告)日：1973-05-15

申请号：US3732892D

申请日：1971-01-29

Applicant: CATERPILLAR TRACTOR CO

Inventor： BUBULA T

IPC: F15B11/12 ,  F15B15/28 ,  F15B21/00 ,  F15C3/00

CPC classification number: F15B11/126 ,  F15B15/2838 ,  F15B21/001 ,  Y10T137/2158 ,  Y10T137/86501

Abstract: An operator''s control lever which is shifted to actuate a hydraulic motor is returned to the initial position to stop the motor after a preselected amount of travel of a element driven by the motor. A fluidic circuit has means producing digital signals indicative of successive increments of travel of the element and has a counter for storing any preselected number of such signals. When the selected count is reached, a kick-out means manipulates the operator''s control lever to stop further operation of the motor. The count required to stop the motor, and thus the amount of travel of the element, may be changed by turning of a control knob. The system is applicable, for example, to limiting movement of the lift arms of a loader vehicle.

Abstract translation: 移动以致动液压马达的操作者的控制杆返回到初始位置，以在由马达驱动的元件的预选量的行程之后停止马达。 流体回路具有产生指示元件的连续移动增量的数字信号的装置，并具有用于存储任何预选数量的这种信号的计数器。 当达到所选择的计数时，踢出装置操纵操作者的控制杆以停止电动机的进一步操作。 可以通过旋转控制旋钮来改变停止电动机所需的计数以及元件的行进量。 该系统例如适用于限制装载机车辆的提升臂的运动。

公开(公告)号：US3486518A

公开(公告)日：1969-12-30

申请号：US37520764

申请日：1964-06-15

Applicant: BENDIX CORP

Inventor： HOWLAND GEORGE R

IPC: F01D17/26 ,  F15B21/00 ,  F15C1/00 ,  F15C1/22 ,  G05B11/48 ,  F15C1/14

CPC classification number: F15C1/22 ,  F01D17/26 ,  F15B21/001 ,  F15C1/003 ,  G05B11/48 ,  Y10T137/2071

公开(公告)号：US20180149174A1

公开(公告)日：2018-05-31

申请号：US15364692

申请日：2016-11-30

Applicant: Schlumberger Technology Corporation

Inventor： James Zapico ,  Joe Rodney Berry

IPC: F15B11/16 ,  F15B13/02 ,  F15B13/06 ,  F15B21/00 ,  F15B21/02 ,  E21B15/00

CPC classification number: F15B11/16 ,  E21B15/00 ,  F15B11/13 ,  F15B11/205 ,  F15B13/022 ,  F15B13/06 ,  F15B21/001 ,  F15B21/02 ,  F15B2211/20538 ,  F15B2211/30 ,  F15B2211/30585 ,  F15B2211/3059 ,  F15B2211/31547 ,  F15B2211/40523 ,  F15B2211/455 ,  F15B2211/5059 ,  F15B2211/6336 ,  F15B2211/6658 ,  F15B2211/7053 ,  F15B2211/7058 ,  F15B2211/85 ,  F15B2211/895

Abstract: Apparatus and methods for metering fluid to a fluid actuator. An example apparatus may include a hydraulic actuator, a fluid chamber, and a hydraulic directional control valve. The fluid chamber may include a piston slidably movable between first and second ends of the fluid chamber and dividing the chamber into first and second chamber portions. The hydraulic directional control valve may direct a fluid from a fluid source into the first chamber portion to cause a volume of fluid to be discharged out of the second chamber portion into the hydraulic actuator to actuate the hydraulic actuator by a distance corresponding to the volume of fluid received by the hydraulic actuator.