EP0884476A2 - Circuit de contrÔle de pression de sécurité pour une pompe hydraulique radiale ou axiale à cylindrée variable ou une machine à cellules semi-rotatives - Google Patents

Circuit de contrÔle de pression de sécurité pour une pompe hydraulique radiale ou axiale à cylindrée variable ou une machine à cellules semi-rotatives Download PDF

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Publication number
EP0884476A2
EP0884476A2 EP98105057A EP98105057A EP0884476A2 EP 0884476 A2 EP0884476 A2 EP 0884476A2 EP 98105057 A EP98105057 A EP 98105057A EP 98105057 A EP98105057 A EP 98105057A EP 0884476 A2 EP0884476 A2 EP 0884476A2
Authority
EP
European Patent Office
Prior art keywords
pressure
machine
valve
control valve
pump
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
EP98105057A
Other languages
German (de)
English (en)
Other versions
EP0884476B1 (fr
EP0884476A3 (fr
Inventor
Volkmar Leutner
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0884476A2 publication Critical patent/EP0884476A2/fr
Publication of EP0884476A3 publication Critical patent/EP0884476A3/fr
Application granted granted Critical
Publication of EP0884476B1 publication Critical patent/EP0884476B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/10—Other safety measures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/08—Regulating by delivery pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2205/00—Fluid parameters
    • F04B2205/06—Pressure in a (hydraulic) circuit
    • F04B2205/061—Pressure in a (hydraulic) circuit after a throttle

Definitions

  • Main control variable of the control loop 10 shown 1 shows the instantaneous position of the lifting device 12, to detect one of the piston / cylinder units 14.1 / 2 is provided with a displacement sensor 16.
  • the transducer 16 is a conventionally known component, the a dependent on the position of the lifting device 12 electrical signal 18 generated.
  • This signal 18 is one Amplifier 20 supplied, the signal 18 with a Compare setpoint 22. From the discrepancies between the The amplifier 20 forms the desired value 22 and the signal 18 electrical control signal 24 for a control valve 26.
  • Das Control valve 26 converts the control signal 24 into hydraulic signal for the lifting device 12 of the Working machine 11 um.
  • Valve slide 36 with a hydraulic force in the direction its longitudinal axis is applied.
  • the hydraulic power counteracts the force of the control spring 40 and is in it Size of the pressurized face of the Valve spool 36 determines.
  • the pressure divider 64 the force acts on the valve slide 36 proportional to the system pressure of the working machine 11.
  • this force becomes the valve spool 36 of the control valve 26 pressed towards the control spring 40, causing its Control edges the pressure medium flow from port 38.1 to Change connection 38.2 of hydraulic part 30.
  • the piston / cylinder unit 14.1 increases the pressure level, which a further employment of the lifting device 12 of the Working machine 11 causes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
EP98105057A 1997-06-12 1998-03-20 Circuit de contrôle de pression de sécurité pour une pompe hydraulique radiale ou axiale à cylindrée variable ou une machine à cellules semi-rotatives Expired - Lifetime EP0884476B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19724870 1997-06-12
DE19724870A DE19724870A1 (de) 1997-06-12 1997-06-12 Verstellbare hydraulische Arbeitsmaschine

Publications (3)

Publication Number Publication Date
EP0884476A2 true EP0884476A2 (fr) 1998-12-16
EP0884476A3 EP0884476A3 (fr) 1999-02-03
EP0884476B1 EP0884476B1 (fr) 2003-10-22

Family

ID=7832281

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98105057A Expired - Lifetime EP0884476B1 (fr) 1997-06-12 1998-03-20 Circuit de contrôle de pression de sécurité pour une pompe hydraulique radiale ou axiale à cylindrée variable ou une machine à cellules semi-rotatives

Country Status (3)

Country Link
EP (1) EP0884476B1 (fr)
JP (1) JPH1150968A (fr)
DE (2) DE19724870A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100485196C (zh) * 2006-02-11 2009-05-06 中国矿业大学 具有液控或电液控两种工作方式的电液卸载阀
WO2014016304A1 (fr) * 2012-07-24 2014-01-30 Poclain Hydraulics Industrie Circuit de commande hydraulique avec sécurité en cas de coupure de commande

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013037582A1 (fr) 2011-09-16 2013-03-21 Robert Bosch Gmbh Dispositif de réglage pour une machine hydrostatique et machine hydrostatique
DE102016014361A1 (de) 2016-12-02 2018-06-07 Alpha Fluid Hydrauliksysteme Müller GmbH Proportionalventil in Hydrauliksystemen
DE102017222355A1 (de) * 2017-12-11 2019-06-13 Robert Bosch Gmbh Ansteuervorrichtung mit elektroproportionalem Regelverhalten und Doppel-Magnetspule
DE102021118806B3 (de) 2021-07-21 2022-10-13 Pierburg Pump Technology Gmbh Verfahren zur Steuerung einer elektrisch angetriebenen Fluidpumpe für ein Fahrzeug und eine elektrisch angetriebene Fluidpumpe für ein Fahrzeug

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4410719A1 (de) 1994-03-28 1995-10-05 Bosch Gmbh Robert Elektrohydraulisch verstellbare Pumpe

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3140397C2 (de) * 1981-10-10 1993-10-21 Bosch Gmbh Robert Vorgesteuerte Vorrichtung zur lastunabhängigen Regelung eines Druckmittelstroms proportional zu einem elektrischen Eingangssignal
US4801247A (en) * 1985-09-02 1989-01-31 Yuken Kogyo Kabushiki Kaisha Variable displacement piston pump
DE4115606A1 (de) * 1991-05-14 1992-11-19 Putzmeister Maschf Ueberlast-schutzeinrichtung fuer einen als brennkraftmaschine ausgebildeten antriebsmotor einer hauptpumpe eines hydraulischen druckversorgungsaggregats
DE4327313C2 (de) * 1993-08-13 2001-07-05 Mannesmann Rexroth Ag Verfahren zur Druckregelung einer hydrostatischen Maschine mit verstellbarem Fördervolumen

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4410719A1 (de) 1994-03-28 1995-10-05 Bosch Gmbh Robert Elektrohydraulisch verstellbare Pumpe

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100485196C (zh) * 2006-02-11 2009-05-06 中国矿业大学 具有液控或电液控两种工作方式的电液卸载阀
WO2014016304A1 (fr) * 2012-07-24 2014-01-30 Poclain Hydraulics Industrie Circuit de commande hydraulique avec sécurité en cas de coupure de commande
FR2993940A1 (fr) * 2012-07-24 2014-01-31 Poclain Hydraulics Ind Circuit de commande hydraulique avec securite en cas de coupure de commande

Also Published As

Publication number Publication date
EP0884476B1 (fr) 2003-10-22
EP0884476A3 (fr) 1999-02-03
JPH1150968A (ja) 1999-02-23
DE19724870A1 (de) 1998-12-17
DE59809947D1 (de) 2003-11-27

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