公开(公告)号：US20240328436A1

公开(公告)日：2024-10-03

申请号：US18622719

申请日：2024-03-29

Applicant: Airbus Operations GmbH

Inventor： Lars HOFFMANN ,  Rolf GÖESSING ,  Martin HAMM

IPC: F15B11/17 ,  B64D41/00 ,  F15B13/06

CPC classification number: F15B11/17 ,  B64D41/00 ,  F15B13/06

Abstract: An apparatus and method for hydraulically powering at least one consumer of a hydraulic system of an aircraft is disclosed including a first electrical power source and a first electrically driven motor pump (MPU1) electrically powered by the first electrical power source, a second electrical power source and a second electrically driven motor pump (MPU2) electrically powered by the second electrical power source (B), and a hydraulic power generation control which controls a supply of electrical energy from the first and second electrical power sources to the first and second motor pumps (MPU1, MPU2). A method is disclosed for determining the actual available electrical power (APA, APB) of each of the first and second electrical power sources and to set a load factor (UPA, UPB) of each motor pump in order to share a load to generate hydraulic power demanded from the at least one consumer between the first and second motor pumps.

公开(公告)号：US12085097B2

公开(公告)日：2024-09-10

申请号：US17781922

申请日：2020-12-03

Applicant: LIEBHERR-WERK BISCHOFSHOFEN GMBH ,  DANFOSS SCOTLAND LTD.

Inventor： Rupert Gappmaier ,  Florian Altenberger ,  Hans Knapp ,  Josef Stock ,  Alexis Dole ,  Callan Mackay

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

CPC classification number: F15B11/17 ,  E02F3/422 ,  E02F9/2225 ,  E02F9/225 ,  E02F9/2267 ,  E02F9/2292 ,  F15B13/06 ,  F15B2211/20576

Abstract: The present invention relates to a switching valve block for a hydraulically actuable work machine that comprises a plurality of valve block inputs for a respective connection to a pressure output of one or more hydraulic fluid pumps, a plurality of valve block outputs for outputting a pressurized hydraulic fluid, and at least one valve that is arranged between valve block inputs and valve block outputs and is adapted to selectively produce a fluid connection between a first valve block input and a first valve block output or between a first valve block input and a second valve block output. The invention is characterized in that the first valve block output furthermore already has a fixed fluid connection to a second valve block input.

公开(公告)号：US12084839B2

公开(公告)日：2024-09-10

申请号：US18164682

申请日：2023-02-06

Applicant: DANFOSS SCOTLAND LIMITED

Inventor： Daniil Dumnov ,  Niall Caldwell

IPC: E02F9/22 ,  F15B1/02 ,  F15B1/033 ,  F15B11/024 ,  F15B11/16 ,  F15B11/17 ,  F15B21/14

CPC classification number: E02F9/2292 ,  E02F9/2217 ,  E02F9/2221 ,  E02F9/2235 ,  E02F9/2242 ,  E02F9/2296 ,  F15B1/024 ,  F15B1/033 ,  F15B11/024 ,  F15B11/165 ,  F15B11/17 ,  F15B21/14 ,  F15B2211/20546 ,  F15B2211/20569 ,  F15B2211/20576 ,  F15B2211/212 ,  F15B2211/625

Abstract: A vehicle includes: a prime mover; a hydraulic fluid manifold; a hydraulic machine; a hydraulic accumulator; one or more hydraulic actuators; a valve arrangement; and a controller. The controller is configured to receive an actuator demand signal indicative of a demand to move the one or more hydraulic actuators; and to control the hydraulic machine and the valve arrangement to cause movement of the one or more actuators in accordance with the actuator demand signal by bringing the hydraulic accumulator into fluid communication with a first actuator chamber of the one or more hydraulic actuators, and to synchronise therewith changing a pressure in a second actuator chamber of the one or more hydraulic actuators. The second actuator chamber is in fluid communication with the hydraulic machine.

公开(公告)号：US20240200581A1

公开(公告)日：2024-06-20

申请号：US18532204

申请日：2023-12-07

Applicant: Taiyuan University of Technology

Inventor： Long QUAN ,  Tao LIANG ,  Lianpeng XIA ,  Xiangyu WANG ,  Weinan HUANG

IPC: F15B13/02 ,  F15B11/17 ,  F15B15/14 ,  F15B19/00

CPC classification number: F15B13/02 ,  F15B11/17 ,  F15B15/1457 ,  F15B19/005 ,  F15B2211/3144

Abstract: The present disclosure belongs to the technical field of hydraulic control, and relates to a velocity and position compound control system for a pump-valve dual-source driven hydraulic cylinder used in engineering machinery. The system includes a first power source, a first hydraulic pump, a second power source, a second hydraulic pump, a safety valve, a proportional directional valve, a pilot operated check valve, a single-rod hydraulic cylinder, a handle, a tank, a rotating speed sensor, a first pressure sensor, a second pressure sensor, a third pressure sensor, a temperature sensor, a position transmitting unit, magnetic induction marks, a count correction module, an integrator module, a calculation control module, a signal acquisition module, a data storage module, a cloud memory, a communication protocol module, a fault diagnosis module, and a process monitoring module.

公开(公告)号：US20240093703A1

公开(公告)日：2024-03-21

申请号：US18262978

申请日：2022-01-18

Applicant: JATCO Ltd ,  NISSAN MOTOR CO., LTD.

Inventor： Tomoko SUGANO ,  Takurou KAWASUMI ,  Kenji SAKAKIBARA

IPC: F15B11/17 ,  F15B13/02 ,  F16H61/662

CPC classification number: F15B11/17 ,  F15B13/027 ,  F16H61/662 ,  F16H9/04

Abstract: A hydraulic supply device includes: a first oil pump configured to supply oil to a supply passage; a second oil pump driven together with the first oil pump or driven when the first oil pump is stopped; a first check valve provided in a first oil passage that allows a suction side of the second oil pump to communicate with an oil source, and configured to close the first oil passage when the second oil pump is stopped; a second check valve provided in a second oil passage that allows a discharge side of the second oil pump to communicate with the supply passage, and configured to close the second oil passage when the second oil pump is stopped; and a third oil passage into which the oil supplied to the supply passage flows, wherein the oil flowing into the third oil passage is used as an auxiliary pressure for operation of the second check valve when the second oil passage is closed.

公开(公告)号：US11933058B2

公开(公告)日：2024-03-19

申请号：US17947234

申请日：2022-09-19

Applicant: CIFA S.P.A.

Inventor： Paolo Dario Maini ,  Massimo Calculli ,  Emanuele Zorzi

IPC: E04G21/04 ,  B60K6/24 ,  B60K17/28 ,  F15B11/17 ,  F15B15/18 ,  H01M10/42 ,  H01M10/44 ,  H02J7/14

CPC classification number: E04G21/0436 ,  B60K6/24 ,  B60K17/28 ,  F15B11/17 ,  F15B15/18 ,  H01M10/425 ,  H01M10/44 ,  H02J7/14 ,  B60Y2200/41 ,  B60Y2200/92 ,  H01M2220/20

Abstract: A hybrid mobile operating machine comprising a motor vehicle driven by an internal combustion engine, an articulated arm associated with a pipe, a pumping unit and a stabilization unit, primary services and auxiliary services, wherein the internal combustion engine is suitable to power at least a first and a second power take-off. The mobile operating machine is provided with both a first drive unit which comprises at least one electric accumulator, a first electric motor and a first hydraulic pump, and a second drive unit which comprises at least one second electric motor and a second hydraulic pump.

公开(公告)号：US11913195B2

公开(公告)日：2024-02-27

申请号：US18095200

申请日：2023-01-10

Applicant: VOLVO CONSTRUCTION EQUIPMENT AB

Inventor： Sangki Bae ,  Donguk Choi ,  Gyeongmo Min ,  Byeongsoo Kim

IPC: E02F9/22 ,  E02F9/20 ,  F15B11/17 ,  F15B15/18

CPC classification number: E02F9/2235 ,  E02F9/2004 ,  E02F9/2228 ,  E02F9/2292 ,  E02F9/2296 ,  F15B11/17 ,  F15B15/18 ,  E02F9/2285

Abstract: Provided is a hydraulic machine including an actuator, a first pump and a second pump configured to supply pressurized fluid to the actuator, a driving motor configured to drive the first and second pumps, a first operator input device through which an operator's desire to operate the actuator is input, and a controller. The controller determines displacements of the first and second pumps corresponding to the operator's desire and a speed of rotation of the driving motor and controls the first pump, the second pump, and the driving motor to operate according to the displacements of the first and second pumps and the speed of rotation of the driving motor finally determined in the determination of the displacements of the first and second pumps.

公开(公告)号：US11885105B2

公开(公告)日：2024-01-30

申请号：US17619666

申请日：2020-06-15

Applicant: KOBELCO CONSTRUCTION MACHINERY CO., LTD.

Inventor： Masaki Nagai ,  Koji Ueda ,  Yuichiro Fujita

IPC: E02F9/22 ,  F15B11/17

CPC classification number: E02F9/2242 ,  E02F9/2282 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296 ,  F15B11/17 ,  F15B2211/20546 ,  F15B2211/3058 ,  F15B2211/30595 ,  F15B2211/3116

Abstract: A hydraulic drive apparatus includes a flow-path selector valve and a flow-path switching control unit that operates the valve. The flow-path selector valve has a first position for a single operation state and a second position for a combined operation state, configured to, at the first position, form a first flow path connected to a first pump, a second flow path connected to a second pump, and a connecting flow path providing communication between the first flow path and the second flow path. When a driving state of a work actuator is deviated from an allowable range in the combined operation state, the flow-path switching control unit reduces an opening area of the connecting flow path as compared with that when the driving state is within the allowable range.

公开(公告)号：US11858171B2

公开(公告)日：2024-01-02

申请号：US17388809

申请日：2021-07-29

Applicant: Oshkosh Corporation

Inventor： Yanming Hou ,  Loren G. DeVries ,  Rongjun Zhang ,  Jeremy Andringa

IPC: B28C5/00 ,  B28C5/42 ,  F15B11/17 ,  F15B7/00

CPC classification number: B28C5/4213 ,  B28C5/4217 ,  F15B11/17 ,  F15B7/006 ,  F15B2211/20515 ,  F15B2211/20523 ,  F15B2211/20538 ,  F15B2211/20576 ,  F15B2211/327

Abstract: A drum drive system includes a controller configured to selectively control an engine, a variable displacement pump, and a variable displacement motor of a vehicle to provide a target drum speed for a drum of the vehicle. To provide the target drum speed, the controller is configured to: (i) initially operate the variable displacement motor at a maximum motor displacement and operate the variable displacement pump at a pump displacement that provides the target drum speed without needing to actively manipulate an engine speed of the engine; (ii) increase the pump displacement and decrease a motor displacement without needing to actively manipulate the engine speed while still providing the target drum speed; and (iii) increase the engine speed in response to the pump displacement reaching a maximum pump displacement and the motor displacement reaching a minimum motor displacement if necessary to maintain the target drum speed.

公开(公告)号：US11833596B2

公开(公告)日：2023-12-05

申请号：US16968361

申请日：2019-02-27

Applicant: Leon Trudeau

Inventor： Leon Trudeau

IPC: B23D21/14 ,  B26D3/16 ,  E02D9/04 ,  E02D9/00 ,  F15B11/17 ,  F15B15/24

CPC classification number: B23D21/14 ,  E02D9/005 ,  F15B11/17 ,  F15B15/24 ,  F15B2211/20576 ,  F15B2211/7051 ,  F15B2211/71

Abstract: Assemblies to cut a hollow piling are provided, which may have a pressurized hydraulic fluid supply configured to supply enough force to cut through up to the circumference of a piling having a housing having a cavity to receive the hydraulic fluid, the housing having at least one cylinder wall; at least one piston assembly slidably disposed within the at least one cylinder wall configured to extend from the at least one cylinder wall in response to the introduction of pressurized hydraulic fluid into the housing cavity; and a blade attached at a radially distal end of the piston assembly, whereby as the blade extends through the cylinder wall, a cutting force is applied to an encountered piling wall.