MXPA04003557A - Equipo hidraulico. - Google Patents

Equipo hidraulico.

Info

Publication number
MXPA04003557A
MXPA04003557A MXPA04003557A MXPA04003557A MXPA04003557A MX PA04003557 A MXPA04003557 A MX PA04003557A MX PA04003557 A MXPA04003557 A MX PA04003557A MX PA04003557 A MXPA04003557 A MX PA04003557A MX PA04003557 A MXPA04003557 A MX PA04003557A
Authority
MX
Mexico
Prior art keywords
hydraulic
pump
control valves
pressure
drive source
Prior art date
Application number
MXPA04003557A
Other languages
English (en)
Inventor
Itoh Takahiko
Original Assignee
Saxa Inc Y Yukigaya Inst Co Lt
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Saxa Inc Y Yukigaya Inst Co Lt filed Critical Saxa Inc Y Yukigaya Inst Co Lt
Publication of MXPA04003557A publication Critical patent/MXPA04003557A/es

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/161Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
    • F15B11/165Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load for adjusting the pump output or bypass in response to demand
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F9/00Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20Drives; Control devices
    • E02F9/22Hydraulic or pneumatic drives
    • E02F9/2217Hydraulic or pneumatic drives with energy recovery arrangements, e.g. using accumulators, flywheels
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/14Energy-recuperation means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/20Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205Systems with pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/20Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205Systems with pumps
    • F15B2211/2053Type of pump
    • F15B2211/20569Type of pump capable of working as pump and motor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/20Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205Systems with pumps
    • F15B2211/20576Systems with pumps with multiple pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/20Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/21Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
    • F15B2211/212Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being accumulators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/20Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/265Control of multiple pressure sources
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/30Directional control
    • F15B2211/305Directional control characterised by the type of valves
    • F15B2211/30505Non-return valves, i.e. check valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/30Directional control
    • F15B2211/305Directional control characterised by the type of valves
    • F15B2211/30525Directional control valves, e.g. 4/3-directional control valve
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/30Directional control
    • F15B2211/305Directional control characterised by the type of valves
    • F15B2211/3056Assemblies of multiple valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/30Directional control
    • F15B2211/31Directional control characterised by the positions of the valve element
    • F15B2211/3105Neutral or centre positions
    • F15B2211/3116Neutral or centre positions the pump port being open in the centre position, e.g. so-called open centre
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/30Directional control
    • F15B2211/315Directional control characterised by the connections of the valve or valves in the circuit
    • F15B2211/3157Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line
    • F15B2211/31594Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line having multiple pressure sources and multiple output members
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/30Directional control
    • F15B2211/32Directional control characterised by the type of actuation
    • F15B2211/327Directional control characterised by the type of actuation electrically or electronically
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/50Pressure control
    • F15B2211/505Pressure control characterised by the type of pressure control means
    • F15B2211/50509Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50518Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using pressure relief valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/60Circuit components or control therefor
    • F15B2211/615Filtering means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/60Circuit components or control therefor
    • F15B2211/63Electronic controllers
    • F15B2211/6303Electronic controllers using input signals
    • F15B2211/6306Electronic controllers using input signals representing a pressure
    • F15B2211/6309Electronic controllers using input signals representing a pressure the pressure being a pressure source supply pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/60Circuit components or control therefor
    • F15B2211/63Electronic controllers
    • F15B2211/6303Electronic controllers using input signals
    • F15B2211/6336Electronic controllers using input signals representing a state of the output member, e.g. position, speed or acceleration
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/70Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7058Rotary output members

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

Un equipo hidraulico capaz de realizar una misma funcion como una bomba de desplazamiento variable al controlar dispositivos hidraulicos tales como valvulas de control en tal estado que una bomba hidraulicas accionada por una fuente de propulsion tal como una maquina termica o un motor se opera siempre con una alta eficiencia y a una velocidad generalmente constante sin importar el tipo de bomba, caracterizado en que se forma una fuente hidraulica de presion constante al accionar la bomba hidraulica mediante la fuente de propulsion que tiene, internamente o por adicion, una cantidad especifica de inercia, estando dispuestos los elementos perifericos de acuerdo con un requerimiento de carga, y las valvulas de control se abren y cierran de acuerdo con los estados de las cargas que incluyen un dispositivo de almacenamiento de energia o un motor hidraulico de manera que puede alimentarse a la carga el aceite a un flujo grande a baja presion.
MXPA04003557A 2001-10-19 2002-10-18 Equipo hidraulico. MXPA04003557A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001356727A JP3679749B2 (ja) 2001-10-19 2001-10-19 油圧装置
PCT/JP2002/010849 WO2003036100A1 (fr) 2001-10-19 2002-10-18 Equipement hydraulique

Publications (1)

Publication Number Publication Date
MXPA04003557A true MXPA04003557A (es) 2004-07-30

Family

ID=19168195

Family Applications (1)

Application Number Title Priority Date Filing Date
MXPA04003557A MXPA04003557A (es) 2001-10-19 2002-10-18 Equipo hidraulico.

Country Status (9)

Country Link
US (1) US7043906B2 (es)
EP (1) EP1439310A4 (es)
JP (1) JP3679749B2 (es)
CN (1) CN100404881C (es)
AU (1) AU2002344002B8 (es)
CA (1) CA2473966C (es)
MX (1) MXPA04003557A (es)
TW (1) TW539812B (es)
WO (1) WO2003036100A1 (es)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3979917B2 (ja) * 2002-10-18 2007-09-19 サクサ株式会社 油圧装置
DE202007011783U1 (de) * 2007-08-23 2008-12-24 Liebherr-France Sas, Colmar Hydraulikantrieb insbesondere eines Baggers insbesondere für ein Drehwerk
DE102009025707B4 (de) * 2009-06-20 2021-06-02 Robert Bosch Gmbh Vorrichtung zur Steuerung einer Anlage mit Hydraulikkreisen
KR101652112B1 (ko) * 2009-12-23 2016-08-29 두산인프라코어 주식회사 하이브리드 굴삭기 붐 구동시스템 및 그 제어방법
KR20110127773A (ko) * 2010-05-20 2011-11-28 두산산업차량 주식회사 전동지게차의 에너지 회수 시스템
KR101390078B1 (ko) * 2010-12-24 2014-05-30 두산인프라코어 주식회사 하이브리드 굴삭기 붐 구동시스템 및 그 제어방법
CN102108948B (zh) * 2010-12-28 2012-11-28 山河智能装备股份有限公司 一种适用于装卸搬运电动车的能量再生发电系统
CN103717808A (zh) * 2011-08-12 2014-04-09 伊顿公司 用于回收惯性能量的方法和装置
CN102384120A (zh) * 2011-10-24 2012-03-21 江苏谷登工程机械装备有限公司 岩心钻机动力头容积调速液压系统
KR102046673B1 (ko) * 2011-12-23 2019-11-19 제이씨 뱀포드 엑스카베이터즈 리미티드 운동 에너지 저장 장치를 포함한 유압 시스템
CN102797713B (zh) * 2011-12-29 2015-01-21 南京工程学院 转盘式变量飞轮
CN102797728B (zh) * 2011-12-29 2015-02-04 南京工程学院 基于变量飞轮的节能型液压振动系统及其工作方式
KR101956959B1 (ko) 2012-01-09 2019-03-11 이턴 코포레이션 단일 입력을 사용해서 리프트 스피드의 전체 범위를 획득하기 위한 방법
KR101908135B1 (ko) * 2012-01-30 2018-10-15 두산인프라코어 주식회사 하이브리드 굴삭기의 붐 구동시스템 및 그 제어방법
US9982690B2 (en) * 2012-02-28 2018-05-29 Eaton Intelligent Power Limited Digital hydraulic transformer and method for recovering energy and leveling hydraulic system loads
WO2015171692A1 (en) 2014-05-06 2015-11-12 Eaton Corporation Hydraulic hybrid propel circuit with hydrostatic option and method of operation
US9667098B2 (en) * 2014-07-11 2017-05-30 Bassem Soueidan Hydraulically-driven extended-runtime flywheel uninterruptible power supply
US9879700B1 (en) 2014-07-22 2018-01-30 Boston Dynamics, Inc. Robotic hydraulic system
JP6806409B2 (ja) 2014-10-27 2021-01-06 イートン コーポレーションEaton Corporation 静圧オプションを有する油圧ハイブリッド推進回路とその操作方法
CN105697474B (zh) * 2014-12-11 2020-10-16 罗伯特·博世有限公司 用于做功机械的液压的设备和用于液压的设备的方法
CN104831774B (zh) * 2015-04-16 2017-07-07 湖南网大科技有限公司 一种装载机行走制动能量回收辅助驱动装置及控制方法
JP6506146B2 (ja) * 2015-09-14 2019-04-24 株式会社神戸製鋼所 作業機械の油圧駆動装置
AT517070B1 (de) 2015-10-08 2016-11-15 Engel Austria Gmbh Hydraulische Antriebsvorrichtung für eine Formgebungsmaschine
EP3258137A1 (en) * 2016-06-13 2017-12-20 DANA ITALIA S.r.l. Hydraulic driveline with a secondary module
US10480159B2 (en) 2017-06-05 2019-11-19 Caterpillar Inc. Kinetic energy recovery system for a machine
JP7037290B2 (ja) * 2017-06-27 2022-03-16 川崎重工業株式会社 油圧駆動システム
CN107965479B (zh) * 2017-11-27 2020-07-07 徐州工业职业技术学院 一种机液复合能量快速补偿机构及节能电液系统
CN108915021B (zh) * 2018-07-27 2021-02-05 徐州工业职业技术学院 一种液压挖掘机用多模式回转电液控制系统
CN108978773B (zh) * 2018-08-29 2020-10-16 徐州工业职业技术学院 一种挖掘机用多元混合动力系统
CN109797797B (zh) * 2018-12-27 2021-03-23 徐州工业职业技术学院 一种扭矩耦合式挖掘机动臂势能回收与再利用系统
CN110778537A (zh) * 2019-11-05 2020-02-11 宁波路佳机械科技有限公司 一种节能型液压站
CN114508512A (zh) * 2022-02-23 2022-05-17 农业农村部南京农业机械化研究所 一种驱动底盘的节能液压系统

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5160876A (ja) 1974-11-25 1976-05-27 Hitachi Construction Machinery Furaihoirukudoshikyuatsukudosochi
JPS52119777A (en) 1976-03-31 1977-10-07 Inasaka Haguruma Seisakushiyo Operating means of hydraulic cylinder and the like
JPS5535773A (en) 1978-09-05 1980-03-12 Oiru Doraibu Kogyo Kk Hydraulic elevator
JPH01303302A (ja) 1988-06-01 1989-12-07 Tochigi Fuji Ind Co Ltd 圧力供給装置
JP3064574B2 (ja) 1991-09-27 2000-07-12 株式会社小松製作所 油圧掘削機における作業油量切換制御装置
JP3508955B2 (ja) * 1995-03-24 2004-03-22 株式会社小松製作所 油圧モータの駆動装置
JPH0972313A (ja) 1995-09-06 1997-03-18 Tokimec Inc 液圧装置システム
JPH0988906A (ja) * 1995-09-25 1997-03-31 Daiichi Denki Kk 弾み車を有する液圧駆動装置
US5733095A (en) * 1996-10-01 1998-03-31 Caterpillar Inc. Ride control system
JP3437758B2 (ja) * 1998-03-31 2003-08-18 住友重機械工業株式会社 クランクプレス
JP4761410B2 (ja) * 1999-09-13 2011-08-31 パスカルエンジニアリング株式会社 ダイクッション装置
US6467264B1 (en) * 2001-05-02 2002-10-22 Husco International, Inc. Hydraulic circuit with a return line metering valve and method of operation

Also Published As

Publication number Publication date
JP2003130006A (ja) 2003-05-08
EP1439310A4 (en) 2005-07-27
EP1439310A1 (en) 2004-07-21
WO2003036100A1 (fr) 2003-05-01
CN100404881C (zh) 2008-07-23
US20050042121A1 (en) 2005-02-24
US7043906B2 (en) 2006-05-16
CA2473966C (en) 2008-06-17
CN1604995A (zh) 2005-04-06
AU2002344002B2 (en) 2006-02-16
CA2473966A1 (en) 2003-05-01
JP3679749B2 (ja) 2005-08-03
TW539812B (en) 2003-07-01
AU2002344002B8 (en) 2006-02-23

Similar Documents

Publication Publication Date Title
MXPA04003557A (es) Equipo hidraulico.
KR101339230B1 (ko) 자동변속기의 유압제어장치
EP0695875A4 (en) HYDRAULIC PUMP REGULATOR
WO2008090761A1 (ja) 油圧駆動装置
CN102011767B (zh) 液压系统
CA2112711A1 (en) Hydraulic Actuating System for a Fluid Transfer Apparatus
EP1154162A4 (en) DEVICE FOR CONTROLLING HYDRAULIC PUMPS
EP1672128A3 (en) Hydraulic control device of an excavator with improved loading performance on a slope
EP1550803A4 (en) DRIVE SENSOR CONTROL OF A CONSTRUCTION MACHINE
CN109854557B (zh) 一种带节能型压力预紧单元的双泵直驱电静液作动器
CN103062140A (zh) 基于合流控制方式的液压装置
YU1403A (sh) Hidraulički lift sa akumulatorom
CN105545839A (zh) 一种油缸换向及容积调速液压系统
JP2711894B2 (ja) 油圧駆動車の可変容量ポンプ制御装置
DK1606522T3 (da) En indretning til at styre hydrauliske kraftenheder
Ahn et al. A study on energy saving potential of hydraulic control system using switching type closed loop constant pressure system
JP2021099089A (ja) 往復式圧縮膨張機
CN101255913A (zh) 一种装载机液压传动装置
Chapple et al. An approach to digital distributor valves in low speed pumps and motors
CN1908467A (zh) 装载机液压传动、工作装置
EP1835205A3 (en) Hydraulic power transmission device
CN103148044B (zh) 一种三马达回转多级调速阀
CN201944035U (zh) 可控低速大扭矩动力头马达
JP2012215169A (ja) ポンプ装置
CN102052363B (zh) 可控低速大扭矩动力头马达

Legal Events

Date Code Title Description
FG Grant or registration