EP0809737A1 - Elektrohydraulische proportionale steuerventilvorrichtung - Google Patents

Elektrohydraulische proportionale steuerventilvorrichtung

Info

Publication number
EP0809737A1
EP0809737A1 EP96903123A EP96903123A EP0809737A1 EP 0809737 A1 EP0809737 A1 EP 0809737A1 EP 96903123 A EP96903123 A EP 96903123A EP 96903123 A EP96903123 A EP 96903123A EP 0809737 A1 EP0809737 A1 EP 0809737A1
Authority
EP
European Patent Office
Prior art keywords
port
valve
fluid
pressure
actuating
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP96903123A
Other languages
English (en)
French (fr)
Other versions
EP0809737B1 (de
EP0809737B2 (de
Inventor
Stephen Brian Turner
David Franz Lakin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ultronics Ltd
Original Assignee
Ultronics Ltd
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=10770283&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0809737(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Ultronics Ltd filed Critical Ultronics Ltd
Publication of EP0809737A1 publication Critical patent/EP0809737A1/de
Publication of EP0809737B1 publication Critical patent/EP0809737B1/de
Application granted granted Critical
Publication of EP0809737B2 publication Critical patent/EP0809737B2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
    • F15B11/167—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load using pilot pressure to sense the demand
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/2025—Particular purposes of control systems not otherwise provided for
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2221—Control of flow rate; Load sensing arrangements
    • E02F9/2225—Control of flow rate; Load sensing arrangements using pressure-compensating valves
    • E02F9/2228—Control of flow rate; Load sensing arrangements using pressure-compensating valves including an electronic controller
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2285—Pilot-operated systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
    • F15B11/163—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load for sharing the pump output equally amongst users or groups of users, e.g. using anti-saturation, pressure compensation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/08—Servomotor systems incorporating electrically operated control means
    • F15B21/087—Control strategy, e.g. with block diagram
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/3056—Assemblies of multiple valves
    • F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve
    • F15B2211/3057—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve having two valves, one for each port of a double-acting output member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/327—Directional control characterised by the type of actuation electrically or electronically
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50536—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using unloading valves controlling the supply pressure by diverting fluid to the return line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
    • F15B2211/5157—Pressure control characterised by the connections of the pressure control means in the circuit being connected to a pressure source and a return line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/575—Pilot pressure control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/6306—Electronic controllers using input signals representing a pressure
    • F15B2211/6309—Electronic controllers using input signals representing a pressure the pressure being a pressure source supply pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/6306—Electronic controllers using input signals representing a pressure
    • F15B2211/6313—Electronic controllers using input signals representing a pressure the pressure being a load pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/634—Electronic controllers using input signals representing a state of a valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/6346—Electronic controllers using input signals representing a state of input means, e.g. joystick position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/665—Methods of control using electronic components
    • F15B2211/6654—Flow rate control

Definitions

  • This invention relates to electrohydraulic proportional control valve
  • Such a control valve assembly typically incorporates a main spool valve
  • port as indicated by the directional signal is at the higher pressure, and provides an output signal to a positioning device for controlling the output of the pump in
  • valve members to control the flow rate and/or pressure at the ports of a fluid actuated
  • valve member position the sensed pressures in the ports and the sensed pump pressure
  • valve members are continuously controlled by the servo
  • control means in response to a continually updated actuating signal adapted to drive the
  • control circuitry appropriate programming of the control circuitry.
  • pressure at the ports of the fluid actuated device may be controlled so that the device is adjustable at a uniform rate which is independent of the load, that is so that the rate
  • valve means thus enables operation of the fluid actuated device at a higher level
  • FIG. 1 is a hydraulic circuit diagram of the assembly
  • Figure 2 is a diagrammatic sectional view through a part of the assembly
  • Figure 3 is a block diagram showing the electrical interconnections between
  • Figure 4 is a logic diagram illustrating control functions of the assembly.
  • valve assembly 1 comprises first and second spool valves 2 and 3 connected to first and
  • second actuating ports 4 and 5 for controlling fluid flow to opposite sides of a movable piston 6 of a fluid actuated device 7 in the form of a hydraulic cylinder or motor.
  • first and second spool valves 2 and 3 have spools 12 and 13 which are axially movable
  • pilot actuator valves 44 and 45 The fluid supplied to the pilot actuator valves 44 and 45 is regulated by a pilot pressure regulator 14.
  • the spool 12 or 13 or each spool valve 2 or 3 is movable to effect opening
  • both spools 12 and 13 are spring biased towards their neutral positions (in which they are shown in Figure 1), and position sensors 23 and 24 are provided for supplying electrical position signals indicative of the positions
  • a pressure relief valve 25 is provided for venting the output of the pump 17 to the tank 20 in a manner which will be described in more
  • pressure sensors 26, 27, 28 and 29 are provided for supplying electrical pressure signals P A , P B , P s and P ⁇ indicative of the fluid pressures in the first
  • pilot pressure regulator 14 may also serve to regulate pilot fluid supply to the pilot actuator
  • valves of a further pair of spool valves identical to the spool valves 2 and 3, for controlling supply of fluid to a further fluid actuated device 30.
  • 30 may be two rams for controlling different linkage axes of an earth moving vehicle
  • Figure 2 shows a section through a valve slice part incorporating one of the
  • or 45 comprises a moving coil 35 fixed to a pilot spool 36 which is centred by two springs 37 and 38, the coil 35 being displaceable in an annular air gap 39 within a
  • the pilot actuator valve when a current is supplied to the coil 35 so as to provide magnetic interaction between the magnetic field associated with the current flow and the magnetic flux produced in the air gap 39 by the former 40.
  • conduits 48 and 49 respectively, as well as a tank port 70 connected to the tank and two pump ports 71 and 72 connected to pump either directly or by way of the pilot pressure regulator 14.
  • the spool 12 or 13 of the spool valve 2 or 3 is
  • position sensor 23 or 24 indicates that the spool has been driven to the required position
  • valve 44 or 45 is returned to its neutral position by the springs 37 and 38. This results in movement of the main spool 12 or 13 being stopped so that the spool is held in the required position to which it has been driven by virtue of the fluid pressures acting on
  • pilot actuator valve current is controlled in a complex way by the control circuitry in order to achieve optimum dynamic and position control
  • the moving coil 35 and the spool 36 to which it is fixed are of light construction, the coil 35 has low power consumption and the control circuitry requires
  • spool 12 or 13 to tank be controlled rapidly so as to provide for accurate dynamic
  • control of the piston 6 of the fluid actuated device 7 can be effected with response
  • an appropriate pressure relief signal triggered by sensing of a
  • the complete control valve assembly comprises, for
  • a bank of two valve slices 50 and 51 of the general form described each of which has a first actuating port 4 and a second actuating port 5 for connection to a
  • slice 52 serves to control the supply pressure of hydraulic fluid from a fixed displacement pump (not shown) connected to the pump port 53 in dependence on
  • the pressure relief valve 25 routes the fluid back to the tank at a nominal low pressure.
  • valve 25 may be
  • valve slices 50 and 51 are shown in Figure 3 for simplicity, it should be appreciated
  • the pressure in the port A is set to a nominal value, that is a predetermined pressure above the sensed or assumed tank pressure.
  • a sine wave varying cyclic demand pressure is added
  • valves for controlling the fluid flows to and from the main valve or valves in response

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Analytical Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Servomotors (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)
EP96903123A 1995-02-25 1996-02-22 Elektrohydraulische proportionale steuerventilvorrichtung Expired - Lifetime EP0809737B2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB9503854.3A GB9503854D0 (en) 1995-02-25 1995-02-25 Electrohydraulic proportional control valve assemblies
GB9503854 1995-02-25
PCT/GB1996/000393 WO1996027051A1 (en) 1995-02-25 1996-02-22 Electrohydraulic proportional control valve assemblies

Publications (3)

Publication Number Publication Date
EP0809737A1 true EP0809737A1 (de) 1997-12-03
EP0809737B1 EP0809737B1 (de) 1999-06-16
EP0809737B2 EP0809737B2 (de) 2007-09-19

Family

ID=10770283

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96903123A Expired - Lifetime EP0809737B2 (de) 1995-02-25 1996-02-22 Elektrohydraulische proportionale steuerventilvorrichtung

Country Status (8)

Country Link
EP (1) EP0809737B2 (de)
JP (2) JPH11501106A (de)
KR (1) KR100432381B1 (de)
CN (1) CN1070974C (de)
DE (1) DE69602923T3 (de)
DK (1) DK0809737T4 (de)
GB (2) GB9503854D0 (de)
WO (1) WO1996027051A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004020840A1 (de) * 2002-08-28 2004-03-11 Bucher Hydraulics Gmbh Hydraulischer antrieb für ein wegeventil
FR2859252A1 (fr) * 2003-09-03 2005-03-04 Sauer Danfoss Aps Dispositif de soupapes et unite de commande hydraulique
EP1710446A2 (de) 2005-04-05 2006-10-11 Bosch Rexroth Aktiengesellschaft Hydraulische Steueranordnung und Steuerblock
EP3306112A4 (de) * 2015-06-01 2019-03-20 Hitachi Construction Machinery Co., Ltd. Hydraulische steuerungsvorrichtung für baumaschine
FR3149938A1 (fr) * 2023-06-13 2024-12-20 Robert Bosch Gmbh Installation hydraulique à réglage du débit sortant pour la commande d’un vérin

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EP1553231B1 (de) * 1996-02-28 2008-01-09 Komatsu Ltd. Steuervorrichtung einer Hydraulikantriebsmaschine
GB9717713D0 (en) * 1997-08-22 1997-10-29 Ultronics Limited An electrohydraulic proportional control valve assembly
US6202014B1 (en) * 1999-04-23 2001-03-13 Clark Equipment Company Features of main control computer for a power machine
EP1370773B1 (de) 2001-03-21 2005-06-22 Bucher Hydraulics GmbH Wegeventil
US6763661B2 (en) 2002-05-07 2004-07-20 Husco International, Inc. Apparatus and method for providing vibration to an appendage of a work vehicle
DE10259146A1 (de) * 2002-12-18 2004-07-15 Georg Sebode Aufzug mit einem hydraulischen Antrieb
DE10330869A1 (de) * 2003-07-09 2005-02-17 Hydac System Gmbh Hydraulisches System
DE10340505B4 (de) * 2003-09-03 2005-12-15 Sauer-Danfoss Aps Ventilanordnung zur Steuerung eines Hydraulikantriebs
DE10340506B4 (de) 2003-09-03 2006-05-04 Sauer-Danfoss Aps Ventilanordnung zur Steuerung eines Hydraulikantriebes
DE10344480B3 (de) * 2003-09-24 2005-06-16 Sauer-Danfoss Aps Hydraulische Ventilanordnung
DE102004050294B3 (de) 2004-10-15 2006-04-27 Sauer-Danfoss Aps Hydraulische Ventilanordnung
KR100641393B1 (ko) * 2004-12-07 2006-11-01 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 유압제어회로 및 유압제어방법
DE102005045035B4 (de) * 2005-09-21 2007-07-12 Wessel-Hydraulik Gmbh Hydraulische Schaltungsanordnung zur Versorgung eines doppelt wirkenden hydraulischen Verbrauchers
CN100370149C (zh) * 2006-01-24 2008-02-20 东北大学 恒定背压及比例控制的熔压设备液压压下系统
JP4703419B2 (ja) * 2006-01-31 2011-06-15 カヤバ工業株式会社 油圧アクチュエータ用制御回路
US7487707B2 (en) 2006-09-27 2009-02-10 Husco International, Inc. Hydraulic valve assembly with a pressure compensated directional spool valve and a regeneration shunt valve
DE102007048697A1 (de) * 2007-10-11 2009-04-16 Deere & Company, Moline Hydraulische Hubeinrichtung
CN101889117B (zh) * 2007-12-12 2014-06-11 沃尔沃建筑设备公司 当需要时自动限制运行期间液压系统内压力的方法
DE102008002422A1 (de) * 2008-06-13 2009-12-17 Zf Friedrichshafen Ag Hydraulikversorgungssystem zur Versorgung eines hydraulischen Verbrauchers mit wenigstens einem Verbrauchsbereich
US8359849B2 (en) * 2009-04-07 2013-01-29 Eaton Corporation Control of a fluid circuit using an estimated sensor value
DE102009033645A1 (de) 2009-07-17 2011-01-20 Robert Bosch Gmbh Hydraulische Steueranordnung
GB2472004A (en) * 2009-07-20 2011-01-26 Ultronics Ltd Control arrangement for controlling movement of a differential piston in a hydraulic circuit
US8291925B2 (en) 2009-10-13 2012-10-23 Eaton Corporation Method for operating a hydraulic actuation power system experiencing pressure sensor faults
US8375989B2 (en) * 2009-10-22 2013-02-19 Eaton Corporation Method of operating a control valve assembly for a hydraulic system
EP2638297B1 (de) * 2010-11-08 2015-12-30 Robert Bosch GmbH Hydraulischer oder pneumatischer antrieb zur betätigung einer armatur mit einem regel- oder schaltventil
US8857168B2 (en) 2011-04-18 2014-10-14 Caterpillar Inc. Overrunning pump protection for flow-controlled actuators
DE102011114241B4 (de) * 2011-06-09 2014-09-04 Sms Meer Gmbh Hydraulische Antriebsvorrichtung, Hydraulische Endstufe eines hydraulischen Servo-Regelventils, Servo-Regelventil und Pulverpresse
CN102536194B (zh) * 2011-12-13 2014-05-28 中国石油集团长城钻探工程有限公司 一种液压驱动的恒钻压自动送钻控制系统
CN102535571A (zh) * 2012-02-17 2012-07-04 上海三一重机有限公司 一种基于双阀芯的液压挖掘机再生控制系统及方法
CN102587443A (zh) * 2012-02-23 2012-07-18 上海三一重机有限公司 一种履带式挖掘机多路阀液压控制系统
CN102678663B (zh) * 2012-05-30 2015-05-20 上海三一重机有限公司 一种挖掘机用油缸及带有该油缸的挖掘机
US9145660B2 (en) 2012-08-31 2015-09-29 Caterpillar Inc. Hydraulic control system having over-pressure protection
CN102888873B (zh) * 2012-09-12 2015-03-11 徐州徐工挖掘机械有限公司 一种提高挖掘机复合动作时直线行走性能的装置
CN103122648B (zh) * 2012-12-28 2015-06-17 上海三一重机有限公司 一种多路阀液压控制系统及直线行走控制阀及挖掘机
CN103256334B (zh) * 2013-04-28 2016-06-22 潍坊威度电子科技有限公司 基于电磁数字阀的双作用液压油缸拖拉机悬挂液压系统
DK2811174T3 (da) * 2013-06-04 2020-10-12 Danfoss Power Solutions Aps Styringsarrangement for et hydrauliksystem og en fremgangsmåde til styring af et hydrauliksystem
US8977445B2 (en) * 2013-06-18 2015-03-10 Caterpillar Inc. System and method for dig detection
CN103644172B (zh) * 2013-12-20 2015-12-30 徐州重型机械有限公司 一种起重机伸缩油缸检测及保护装置和方法
CN104564863B (zh) * 2014-12-26 2017-02-22 大连理工大学 一种管片拼装机回转运动电液控制系统
CN108138810B (zh) 2015-10-08 2020-10-16 沃尔沃建筑设备公司 滑阀
US9713307B1 (en) 2016-01-21 2017-07-25 Deere & Company Electrohydraulic dynamic spool position control for a proportional valve in a work vehicle
CN105862962B (zh) * 2016-05-31 2018-05-18 青岛雷沃工程机械有限公司 降低回油背压的液压回路
US10330126B2 (en) * 2016-12-16 2019-06-25 Caterpillar Inc. Fan control system with electro-hydraulic valve providing three fan motor operational positions
CN107387477B (zh) * 2017-07-20 2018-11-06 徐州工业职业技术学院 一种用于滑阀的先导控制装置、液压缸控制回路
WO2019157429A1 (en) * 2018-02-12 2019-08-15 Parker-Hannifin Corporation Hydraulic control valve configured to use a pilot signal as a substitute load-sense signal
EP4218378B1 (de) * 2018-03-08 2024-05-29 Precision Planting LLC Landwirtschaftliches pflanzer-reihengerät mit fluidsteuersystem
CN108953306B (zh) * 2018-08-26 2021-01-08 燕山大学 双联泵直驱式容积控制电液伺服控制系统
CN108868793B (zh) * 2018-09-17 2023-09-01 中国铁建重工集团股份有限公司 一种盾构机主驱动高压密封系统和一种泥水平衡盾构机
EP3670931A1 (de) * 2018-12-17 2020-06-24 Hyva Holding BV Hydraulisches steuerungssystem
JP7400552B2 (ja) * 2020-03-06 2023-12-19 コベルコ建機株式会社 作業機械の油圧駆動装置
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JP7645088B2 (ja) * 2021-02-16 2025-03-13 株式会社小松製作所 作業機械のブーム制御システム
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FR2859252A1 (fr) * 2003-09-03 2005-03-04 Sauer Danfoss Aps Dispositif de soupapes et unite de commande hydraulique
EP1710446A2 (de) 2005-04-05 2006-10-11 Bosch Rexroth Aktiengesellschaft Hydraulische Steueranordnung und Steuerblock
EP3306112A4 (de) * 2015-06-01 2019-03-20 Hitachi Construction Machinery Co., Ltd. Hydraulische steuerungsvorrichtung für baumaschine
FR3149938A1 (fr) * 2023-06-13 2024-12-20 Robert Bosch Gmbh Installation hydraulique à réglage du débit sortant pour la commande d’un vérin

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CN1070974C (zh) 2001-09-12
JPH11501106A (ja) 1999-01-26
GB9603811D0 (en) 1996-04-24
DE69602923T3 (de) 2008-05-21
GB2298291C (en) 2008-02-26
GB9503854D0 (en) 1995-04-19
KR19980702483A (ko) 1998-07-15
KR100432381B1 (ko) 2004-09-16
EP0809737B1 (de) 1999-06-16
GB2298291B (en) 1998-06-10
WO1996027051A1 (en) 1996-09-06
JP2006177561A (ja) 2006-07-06
CN1175988A (zh) 1998-03-11
DE69602923D1 (de) 1999-07-22
DK0809737T3 (da) 1999-11-22
EP0809737B2 (de) 2007-09-19
DK0809737T4 (da) 2008-01-07
WO1996027051B1 (en) 2001-04-12
GB2298291A (en) 1996-08-28
DE69602923T2 (de) 1999-12-09

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