EP2444360A3 - Load-Sensing geregeltes hydrostatisches Antriebssystem - Google Patents

Load-Sensing geregeltes hydrostatisches Antriebssystem Download PDF

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Publication number
EP2444360A3
EP2444360A3 EP11183410.7A EP11183410A EP2444360A3 EP 2444360 A3 EP2444360 A3 EP 2444360A3 EP 11183410 A EP11183410 A EP 11183410A EP 2444360 A3 EP2444360 A3 EP 2444360A3
Authority
EP
European Patent Office
Prior art keywords
consumer
pressure
pump
load
cut
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
EP11183410.7A
Other languages
English (en)
French (fr)
Other versions
EP2444360B9 (de
EP2444360A2 (de
EP2444360B1 (de
Inventor
Markus SCHÖNFELDER
Ludwig Fellenberg
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.)
Linde Hydraulics GmbH and Co KG
Original Assignee
Linde Hydraulics GmbH and Co KG
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 Linde Hydraulics GmbH and Co KG filed Critical Linde Hydraulics GmbH and Co KG
Publication of EP2444360A2 publication Critical patent/EP2444360A2/de
Publication of EP2444360A3 publication Critical patent/EP2444360A3/de
Application granted granted Critical
Publication of EP2444360B1 publication Critical patent/EP2444360B1/de
Publication of EP2444360B9 publication Critical patent/EP2444360B9/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • E02F9/226—Safety arrangements, e.g. hydraulic driven fans, preventing cavitation, leakage, overheating
    • 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
    • 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
    • E02F9/2232—Control of flow rate; Load sensing arrangements using one or more variable displacement pumps
    • 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
    • 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
    • F15B11/165—Servomotor 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
    • 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
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20546—Type of pump variable capacity
    • F15B2211/20553—Type of pump variable capacity with pilot circuit, e.g. for controlling a swash plate
    • 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
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/25—Pressure control functions
    • F15B2211/253—Pressure margin control, e.g. pump pressure in relation to 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
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
    • F15B2211/3053—In combination with a pressure compensating valve
    • F15B2211/30535—In combination with a pressure compensating valve the pressure compensating valve is arranged between pressure source and directional control 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
    • F15B2211/30—Directional control
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3105—Neutral or centre positions
    • F15B2211/3111—Neutral or centre positions the pump port being closed in the centre position, e.g. so-called closed centre
    • 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
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3144—Directional control characterised by the positions of the valve element the positions being continuously variable, e.g. as realised by proportional valves
    • 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
    • F15B2211/329—Directional control characterised by the type of actuation actuated by fluid pressure

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)
  • Fluid-Pressure Circuits (AREA)

Abstract

Die Erfindung betrifft ein Load-Sensing geregeltes hydrostatisches Antriebssystem mit einer im Fördervolumen verstellbaren Pumpe (1) und mindestens einem von der Pumpe (1) versorgten, zwei Verbraucherseiten (A, B) aufweisenden Verbraucher (4), wobei das Fördervolumen der Pumpe (1) in Abhängigkeit von dem höchsten Lastdruck der angesteuerten Verbraucher gesteuert ist und zur Steuerung des Verbrauchers (4) ein in Zwischenstellungen drosselndes Steuerventil (5) vorgesehen ist und für jede zu steuernde Verbraucherseite (A, B) des Verbrauchers (4) eine Druckwaage (11a, 11 b) vorgesehen ist, wobei zur Erfassung des Lastdruck jeder Verbraucherseite (A, B) des Verbrauchers eine Lastdruckmeldezweigleitung (20a, 20b) als Lastdrucksignalpfad zugeordnet ist, die mit einer zur Steuerung des Fördervolumens der Pumpe vorgesehenen, den höchsten Lastdruck der angesteuerten Verbraucher führenden Lastdruckmeldeleitung (21) in Verbindung steht, wobei mindestens ein ausgewählter Verbraucher (4) zur Verbraucherdruckabsicherung mit einer Druckabschneidung (50) versehen ist. Die Aufgabe, an einem ausgewählten Verbraucher zur Verbraucherdruckabsicherung eine Druckabschneidung vorzusehen, die keine Druckverluste im Leistungsvolumenstrom der Pumpe verursacht und einen geringen Bauaufwand aufweist, wird erfindungsgemäß dadurch gelöst, dass die Druckabschneidung (50) des ausgewählten Verbrauchers (4) einer einzigen Verbraucherseite (A) des ausgewählten Verbrauchers (4) zugeordnet ist und zur Druckabschneidung der Verbraucherseite (A) die der Verbraucherseite zugeordnete Druckwaage (11a) in Richtung einer Sperrstellung (12b) betätigbar ist.
EP11183410.7A 2010-10-19 2011-09-30 Load-Sensing geregeltes hydrostatisches Antriebssystem Active EP2444360B9 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010048893A DE102010048893A1 (de) 2010-10-19 2010-10-19 Load-Sensing geregeltes hydrostatisches Antriebssystem

Publications (4)

Publication Number Publication Date
EP2444360A2 EP2444360A2 (de) 2012-04-25
EP2444360A3 true EP2444360A3 (de) 2014-10-29
EP2444360B1 EP2444360B1 (de) 2017-05-03
EP2444360B9 EP2444360B9 (de) 2017-08-16

Family

ID=44719607

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11183410.7A Active EP2444360B9 (de) 2010-10-19 2011-09-30 Load-Sensing geregeltes hydrostatisches Antriebssystem

Country Status (3)

Country Link
EP (1) EP2444360B9 (de)
CN (1) CN102562694B (de)
DE (1) DE102010048893A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012110070A1 (de) * 2012-10-22 2014-04-24 Linde Hydraulics Gmbh & Co. Kg Hydrostatisches Antriebssystem
DE102014102336A1 (de) * 2014-02-24 2015-08-27 Linde Hydraulics Gmbh & Co. Kg Steuerventileinrichtung mit einer Schwimmstellung
DE102015116761A1 (de) * 2015-10-02 2017-04-06 Linde Hydraulics Gmbh & Co. Kg Hydraulisches Konstantdrucksystem einer mobile Arbeitsmaschine
DE102016117206A1 (de) * 2016-09-13 2018-03-15 Linde Hydraulics Gmbh & Co. Kg Load-Sensing Antriebssystem
CN109441906B (zh) * 2018-12-27 2020-05-08 上海航天控制技术研究所 一种电液比例负载敏感泵及泵阀联合控制伺服系统

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4235709A1 (de) * 1992-10-22 1994-04-28 Linde Ag Hydrostatisches Antriebssystem
DE102008054084A1 (de) * 2008-07-25 2010-01-28 Linde Material Handling Gmbh Hydrostatisches Antriebssystem
DE102008049076A1 (de) * 2008-09-26 2010-04-01 Linde Material Handling Gmbh Mobile Arbeitsmaschine, insbesondere Flurförderzeug

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3546336A1 (de) * 1985-12-30 1987-07-02 Rexroth Mannesmann Gmbh Steueranordnung fuer mindestens zwei von mindestens einer pumpe gespeiste hydraulische verbraucher
JP3286147B2 (ja) * 1996-02-08 2002-05-27 株式会社クボタ 建機の油圧回路
US5941155A (en) * 1996-11-20 1999-08-24 Kabushiki Kaisha Kobe Seiko Sho Hydraulic motor control system
JPH1130205A (ja) * 1997-07-11 1999-02-02 Hitachi Constr Mach Co Ltd 油圧回路装置及び分流補償付き方向切換弁装置
JP3240286B2 (ja) * 1998-04-28 2001-12-17 東芝機械株式会社 油圧システム

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4235709A1 (de) * 1992-10-22 1994-04-28 Linde Ag Hydrostatisches Antriebssystem
DE102008054084A1 (de) * 2008-07-25 2010-01-28 Linde Material Handling Gmbh Hydrostatisches Antriebssystem
DE102008049076A1 (de) * 2008-09-26 2010-04-01 Linde Material Handling Gmbh Mobile Arbeitsmaschine, insbesondere Flurförderzeug

Also Published As

Publication number Publication date
EP2444360B9 (de) 2017-08-16
EP2444360A2 (de) 2012-04-25
DE102010048893A1 (de) 2012-04-19
CN102562694A (zh) 2012-07-11
EP2444360B1 (de) 2017-05-03
CN102562694B (zh) 2016-06-01

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