公开(公告)号：US20240309890A1

公开(公告)日：2024-09-19

申请号：US18412851

申请日：2024-01-15

申请人： University of Manitoba

发明人： Badhushan Chithravelpillai ,  Gustavo Koury Costa ,  Zeljko Tomas ,  Nariman Sepehri

IPC分类号： F15B1/033 ,  F15B1/02 ,  F15B1/027

CPC分类号： F15B1/033 ,  F15B1/024 ,  F15B1/027

摘要： A method for storing and reutilizing energy during operation of a hydrostatic actuator (EHA) having a hydraulic cylinder, a first bidirectional pump-motor rotationally coupled to an electric motor, and EHA valving and connections between the first pump-motor and the hydraulic cylinder. During at least one of two motoring quadrants, a hydraulic accumulator is charged using a second pump-motor whose rotation is driven by load-driven motoring of the first bidirectional pump-motor. During at least one of the pumping quadrants, driven rotation is imparted to the second pump-motor using stored energy from the accumulator, and said driven rotation of the second pump-motor is used to augment powered rotation of the first bidirectional pump-motor by the electric motor.

公开(公告)号：US12054917B2

公开(公告)日：2024-08-06

申请号：US17802351

申请日：2021-02-26

申请人： HD HYUNDAI INFRACORE CO., LTD.

发明人： Byungil Kang

IPC分类号： E02F9/22 ,  F15B1/02 ,  F15B11/17 ,  F15B21/14

CPC分类号： E02F9/2221 ,  E02F9/2217 ,  E02F9/2242 ,  E02F9/2267 ,  E02F9/2289 ,  E02F9/2292 ,  E02F9/2296 ,  F15B1/024 ,  F15B11/17 ,  F15B21/14 ,  F15B2211/20523 ,  F15B2211/20546 ,  F15B2211/20561 ,  F15B2211/20576 ,  F15B2211/7135 ,  F15B2211/7142 ,  F15B2211/88

摘要： Provided is a construction machine. The construction machine includes a boom cylinder driving a boom, a rotation motor rotating a rotary body, an arm cylinder driving an arm, a bucket cylinder driving a bucket, a first main pump supplying working fluid to the boom cylinder and discharging the working fluid in opposite directions, a second main pump supplying working fluid to the rotation motor and discharging the working fluid in opposite directions, and a third main pump supplying working fluid to the arm cylinder or the bucket cylinder.

公开(公告)号：US20240200542A1

公开(公告)日：2024-06-20

申请号：US18556815

申请日：2022-04-13

申请人： Hydac Technology GmbH

发明人： Wolfgang Hahmann ,  Frank Bauer ,  Peter Kloft

IPC分类号： F04B13/00 ,  F04B49/16 ,  F04B53/08 ,  F15B1/02 ,  F15B1/04

CPC分类号： F04B13/00 ,  F04B49/16 ,  F04B53/08 ,  F15B1/021 ,  F15B1/04

摘要： Disclosed is a conveying device for fluids with an inlet and an outlet and a conveying part which is connected therebetween and can be actuated by a drive part, wherein the conveying part has a fluid-tight media-separating device with a variable chamber volume, which becomes connected in a fluid-conducting manner via its receiving chamber to the inlet or the outlet, and which, by means of the drive part, receives fluid via the inlet as part of an intake stroke, increasing the chamber volume, and discharges the received fluid via the outlet as part of a discharge stroke, reducing the size of said chamber volume.

公开(公告)号：US11840824B2

公开(公告)日：2023-12-12

申请号：US18079928

申请日：2022-12-13

申请人： Volvo Construction Equipment AB

发明人： Seonggeun Yun ,  Byoungho Lee ,  Hoenghwan Ahn ,  Sangkyu Joo ,  Seunghyun Lee ,  Taerang Jung

IPC分类号： E02F9/22 ,  F15B1/02 ,  F15B1/027

CPC分类号： E02F9/2217 ,  F15B1/024 ,  F15B1/027

摘要： Provided is a hydraulic machine. A pump pressurizes fluid using power provided by a power source. An actuator works using the pressurized fluid from the pump. A recovery part recovers energy from fluid discharged from the actuator. A first operator input device receives a desired input from operator to select an eco-mode or a boost mode. The recovery part includes an accumulator storing hydraulic energy by receiving the fluid discharged from the actuator and an assist unit assisting the power source using the hydraulic energy stored in the accumulator. The controller controls the pump such that output power of the pump does not exceed P1max when the eco-mode is selected or the assist unit does not assist the power source and that the output power does not exceed P2max when the boost mode is selected and the assist unit assists the power source, where P1max

公开(公告)号：US11808289B2

公开(公告)日：2023-11-07

申请号：US17509814

申请日：2021-10-25

申请人： Deere & Company

发明人： Michael J. Cliff ,  Steven R. Fliearman ,  Benjamin K. Dollins

IPC分类号： F15B3/00 ,  F15B1/02 ,  F15B1/033 ,  F15B1/04 ,  F15B11/08

CPC分类号： F15B3/00 ,  F15B1/024 ,  F15B1/033 ,  F15B1/04 ,  F15B11/08 ,  F15B2211/212 ,  F15B2211/665

摘要： A hydraulic fluid pressure amplifier system includes a boost cylinder assembly, an energy storage device in fluid communication with the boost cylinder assembly, and a working cylinder assembly. The boost cylinder assembly is configured to selectively receive a plunger member into a boost cylinder, wherein movement of the plunger member received in the boost cylinder compresses a charge fluid within a blind side volume of the boost cylinder from a first fluid pressure to an amplified fluid pressure greater than the first pressure. The working cylinder assembly is selectively operable responsive to receiving a source hydraulic fluid having a nominal fluid pressure less than the amplified fluid pressure for effecting the movement of the plunger member into the boost cylinder. The energy storage device is operable to selectively receive and store a portion of the charge fluid compressed to the amplified fluid pressure.

公开(公告)号：US20230340967A1

公开(公告)日：2023-10-26

申请号：US17920361

申请日：2021-01-21

申请人： UGT GROUP PTY LTD

发明人： Max SCOTT

IPC分类号： F15B1/04 ,  F15B1/02

CPC分类号： F15B1/04 ,  F15B1/021 ,  F15B2201/3155 ,  F15B2201/405

摘要： The present invention provides an accumulator (20) comprising a housing (21), an inner portion (23) within the housing, and a zone (27) defined between the housing and the inner portion for fluid communication with a driving fluid of a fluid-powered system whereby the inner portion is exposed to the driving fluid received within the zone. The inner portion comprises a resiliently deformable solid mass (31), wherein at least a portion of the mass is deformable in response to fluid pressure in the zone exceeding a prescribed level thereby to provide pressure relief. The deformable portion resiliently rebounds in response to fluid pressure in the zone returning to or falling below the prescribed level.

公开(公告)号：US20230287907A1

公开(公告)日：2023-09-14

申请号：US18198647

申请日：2023-05-17

申请人： Applied Industrial Technologies, Inc.

发明人： Wenling Babbitt ,  W. E. Hoffner, III

IPC分类号： F15B11/08 ,  F15B1/02 ,  B62D5/30 ,  B60T13/14 ,  F16H61/4157 ,  F16H61/4165 ,  F16H61/4096

CPC分类号： F15B11/08 ,  F15B1/022 ,  B62D5/30 ,  B60T13/141 ,  F16H61/4157 ,  F16H61/4165 ,  F16H61/4096 ,  F15B2211/205 ,  B60T2270/402 ,  F15B2211/625 ,  F15B2211/6355 ,  F15B2211/85 ,  F15B2211/8752 ,  F15B2211/4053

摘要： A system and method configured to direct the braking energy from a high-pressure port at the motor side of a hydraulic circuit to emergency steering, braking, accumulator(s) charging, and/or various work functions. The system and method are also configured to return hydraulic fluid back to the same high-pressure port when the motor is running as a pump.

公开(公告)号：US11742663B2

公开(公告)日：2023-08-29

申请号：US17459023

申请日：2021-08-27

申请人： A & A International, LLC

发明人： Horia Abaitancei ,  Cornel Mihai ,  Stefan Ioana

IPC分类号： H02J3/28 ,  B60T1/10 ,  F15B1/027 ,  F15B1/04 ,  F16D31/02 ,  F15B1/02 ,  F15B21/14 ,  F16D61/00 ,  F15B1/26

CPC分类号： H02J3/28 ,  B60T1/10 ,  F15B1/024 ,  F15B1/027 ,  F15B1/04 ,  F15B21/14 ,  F16D31/02 ,  F16D61/00 ,  F15B1/265 ,  F15B2211/20546 ,  F15B2211/20569 ,  F15B2211/212 ,  F15B2211/625 ,  F15B2211/88

摘要： An integrated hybrid energy recovery and storage system for recovering and storing energy from multiple energy sources is disclosed. The system includes an accumulator unit having a high pressure accumulator and a low pressure accumulator. At least one piston is mounted for reciprocation in the high pressure accumulator. The accumulator unit is configured to receive, store, and transfer energy from the hydraulic fluid to the energy storage media. The system further includes two or more rotational directional control valves, in which at least one rotational directional control valve is positioned on each side of the accumulator unit. Each rotational directional control valve includes multiple ports. The system also includes two or more variable displacement hydraulic rotational units. At least one variable displacement hydraulic rotational unit is positioned adjacent each of the rotational directional control valves.

公开(公告)号：US20230248548A1

公开(公告)日：2023-08-10

申请号：US17971314

申请日：2022-10-21

申请人： Otto Bock Healthcare Products GMBH

发明人： Roland AUBERGER ,  Harald SIMA ,  Martin SEYR

IPC分类号： A61F2/64 ,  F15B1/02 ,  F15B15/14 ,  A61F5/01 ,  A61H1/02 ,  A61F5/02

CPC分类号： A61F2/64 ,  A61F5/02 ,  A61F5/013 ,  A61F5/0123 ,  A61H1/0255 ,  A61H1/0277 ,  A61H1/0281 ,  F15B1/021 ,  F15B15/1423 ,  A61F2002/5006

摘要： An actuator-damper unit for use in orthotic or prosthetic devices. The actuator-damper unit includes a housing which may be fastened on the orthotic or prosthetic device and in which a cylinder is formed. A first piston is displaceably mounted in the cylinder and is coupled to a piston rod. The piston rod is disposed, via a first end, on the first piston and may be coupled, via a second end, to the orthotic or prosthetic device. The first piston separates two fluid chambers in the cylinder from each other and forms a piston-cylinder unit, wherein at least one further piston is coupled to the first piston in order to form at least one further, variable-volume fluid chamber.

公开(公告)号：US11719263B2

公开(公告)日：2023-08-08

申请号：US17689352

申请日：2022-03-08

申请人： Adaract Technologies, Ltd.

发明人： Joseph Hill ,  Francis Budu-Manuel

IPC分类号： F15B15/10 ,  F15B15/20 ,  F15B1/02 ,  F15B13/02 ,  F15B11/036

CPC分类号： F15B15/103 ,  F15B15/202 ,  F15B1/021 ,  F15B11/036 ,  F15B13/027 ,  F15B2211/20538 ,  F15B2211/212 ,  F15B2211/30505 ,  F15B2211/30585 ,  F15B2211/31564 ,  F15B2211/6306 ,  F15B2211/6309 ,  F15B2211/6313 ,  F15B2211/665 ,  F15B2211/6655 ,  F15B2211/7107 ,  F15B2211/7142 ,  F15B2211/765 ,  F15B2211/78 ,  F15B2215/30

摘要： The present disclosure relates to variable recruitment actuator systems and related methods. In one embodiment, a variable recruitment actuator system may include a high-pressure fluid connection and a plurality of actuators. A variable recruitment actuator mechanism may selectively recruit a subset of the plurality of actuators based on a position of the variable recruitment actuator mechanism by selectively placing the subset of the plurality of actuators in fluid communication with the high-pressure fluid connection. A control system to control the position of the variable recruitment actuator mechanism may operate based on an input from a user.