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

Info

Publication number: EP0884476A2
Authority: EP; European Patent Office
Prior art keywords: pressure; machine; valve; control valve; pump
Prior art date: 1997-06-12
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

EP0884476A3 (fr

EP0884476B1 (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.)

1997-06-12

Filing date

1998-03-20

Publication date

1998-12-16

1998-03-20 Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH

1998-12-16 Publication of EP0884476A2 publication Critical patent/EP0884476A2/fr

1999-02-03 Publication of EP0884476A3 publication Critical patent/EP0884476A3/fr

2003-10-22 Application granted granted Critical

2003-10-22 Publication of EP0884476B1 publication Critical patent/EP0884476B1/fr

2018-03-20 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

238000006073 displacement reaction Methods 0.000 title description 3
230000007257 malfunction Effects 0.000 claims description 2
238000010276 construction Methods 0.000 description 2
230000001419 dependent effect Effects 0.000 description 2
238000010586 diagram Methods 0.000 description 2
239000000314 lubricant Substances 0.000 description 2
230000001105 regulatory effect Effects 0.000 description 2
238000007792 addition Methods 0.000 description 1
238000001514 detection method Methods 0.000 description 1
238000011161 development Methods 0.000 description 1
230000018109 developmental process Effects 0.000 description 1
238000005516 engineering process Methods 0.000 description 1
238000004519 manufacturing process Methods 0.000 description 1
238000007789 sealing Methods 0.000 description 1
238000011144 upstream manufacturing Methods 0.000 description 1

Images

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
DE19724870A DE19724870A1 (de)	1997-06-12	1997-06-12	Verstellbare hydraulische Arbeitsmaschine
DE19724870		1997-06-12

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
DE102012214408B4 (de)	2011-09-16	2025-08-21	Robert Bosch Gmbh	Verstelleinrichtung für eine hydrostatische Maschine und hydrostatische Maschine
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

1997
- 1997-06-12 DE DE19724870A patent/DE19724870A1/de not_active Ceased
1998
- 1998-03-20 DE DE59809947T patent/DE59809947D1/de not_active Expired - Fee Related
- 1998-03-20 EP EP98105057A patent/EP0884476B1/fr not_active Expired - Lifetime
- 1998-06-12 JP JP10165278A patent/JPH1150968A/ja active Pending

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

Legal Events

Date	Code	Title	Description
1998-10-30	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
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1998-12-16	AX	Request for extension of the european patent	Free format text: AL;LT;LV;MK;RO;SI
1998-12-18	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1999-01-27	RHK1	Main classification (correction)	Ipc: F04B 49/08
1999-02-03	AK	Designated contracting states	Kind code of ref document: A3 Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
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1999-09-29	17P	Request for examination filed	Effective date: 19990803
1999-10-13	AKX	Designation fees paid	Free format text: DE FR GB IT
2003-04-05	GRAH	Despatch of communication of intention to grant a patent	Free format text: ORIGINAL CODE: EPIDOS IGRA
2003-08-30	GRAS	Grant fee paid	Free format text: ORIGINAL CODE: EPIDOSNIGR3
2003-09-05	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
2003-10-22	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): DE FR GB IT
2003-10-22	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT Effective date: 20031022 Ref country code: GB Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20031022 Ref country code: FR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20031022
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