FR3115571B1 - Hydraulic power assist circuit with improved valve structure. - Google Patents

Hydraulic power assist circuit with improved valve structure. Download PDF

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Publication number
FR3115571B1
FR3115571B1 FR2010899A FR2010899A FR3115571B1 FR 3115571 B1 FR3115571 B1 FR 3115571B1 FR 2010899 A FR2010899 A FR 2010899A FR 2010899 A FR2010899 A FR 2010899A FR 3115571 B1 FR3115571 B1 FR 3115571B1
Authority
FR
France
Prior art keywords
hydraulic
power assist
valve structure
hydraulic power
assist circuit
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.)
Active
Application number
FR2010899A
Other languages
French (fr)
Other versions
FR3115571A1 (en
Inventor
Loris Taxil
Gery Depierre
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.)
Poclain Hydraulics Industrie
Original Assignee
Poclain Hydraulics Industrie
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 Poclain Hydraulics Industrie filed Critical Poclain Hydraulics Industrie
Priority to FR2010899A priority Critical patent/FR3115571B1/en
Priority to PCT/FR2021/051827 priority patent/WO2022084623A1/en
Publication of FR3115571A1 publication Critical patent/FR3115571A1/en
Application granted granted Critical
Publication of FR3115571B1 publication Critical patent/FR3115571B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/4078—Fluid exchange between hydrostatic circuits and external sources or consumers
    • F16H61/4139—Replenishing or scavenging pumps, e.g. auxiliary charge pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/4192—Detecting malfunction or potential malfunction, e.g. fail safe

Abstract

Circuit d’assistance hydraulique avec structure de valve améliorée. Système d’assistance hydraulique (1) comprenant une pompe hydraulique (12) reliée à un moteur hydraulique (20) par un bloc valve (50), le système (1) comprenant en outre une pompe de gavage (40) adaptée pour prélever un fluide dans un réservoir (R) et pour délivrer une pression de gavage dans le circuit hydraulique et sélectivement appliquer une pression dans un carter du moteur hydraulique (20), ledit système (1) étant caractérisé en ce que le bloc valve (50) est adapté pour sélectivement isoler la pompe hydraulique (12) du moteur hydraulique (20). Figure pour l’abrégé : Fig. 2.Hydraulic power assist circuit with improved valve structure. Hydraulic assistance system (1) comprising a hydraulic pump (12) connected to a hydraulic motor (20) by a valve block (50), the system (1) further comprising a booster pump (40) adapted to take a fluid in a reservoir (R) and for delivering boost pressure in the hydraulic circuit and selectively applying pressure in a casing of the hydraulic motor (20), said system (1) being characterized in that the valve block (50) is adapted to selectively isolate the hydraulic pump (12) from the hydraulic motor (20). Figure for abstract: Fig. 2.

FR2010899A 2020-10-23 2020-10-23 Hydraulic power assist circuit with improved valve structure. Active FR3115571B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR2010899A FR3115571B1 (en) 2020-10-23 2020-10-23 Hydraulic power assist circuit with improved valve structure.
PCT/FR2021/051827 WO2022084623A1 (en) 2020-10-23 2021-10-20 Hydraulic assistance circuit with improved valve structure

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2010899A FR3115571B1 (en) 2020-10-23 2020-10-23 Hydraulic power assist circuit with improved valve structure.
FR2010899 2020-10-23

Publications (2)

Publication Number Publication Date
FR3115571A1 FR3115571A1 (en) 2022-04-29
FR3115571B1 true FR3115571B1 (en) 2023-01-27

Family

ID=73793491

Family Applications (1)

Application Number Title Priority Date Filing Date
FR2010899A Active FR3115571B1 (en) 2020-10-23 2020-10-23 Hydraulic power assist circuit with improved valve structure.

Country Status (2)

Country Link
FR (1) FR3115571B1 (en)
WO (1) WO2022084623A1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3314886B2 (en) * 1992-11-24 2002-08-19 株式会社小松製作所 Hydraulic drive system abnormality detection device for four-wheel traveling device
FR2784335B1 (en) * 1998-10-12 2000-12-29 Poclain Hydraulics Ind POWER SUPPLY DEVICE FOR A VEHICLE HAVING A MAIN MECHANICAL TRANSMISSION
FR2956462B1 (en) * 2010-02-18 2012-05-18 Poclain Hydraulics Ind HYDRAULIC TRANSMISSION DEVICE IN WHICH THE MAIN PUMP CAN BE ACTUATED PERMANENTLY.
FR2958886B1 (en) * 2010-04-16 2012-06-15 Poclain Hydraulics Ind HYDRAULIC TRANSMISSION DEVICE FOR LITTLE CRABOTAGE
FR3071391B1 (en) * 2017-09-22 2020-01-03 Poclain Hydraulics Industrie POWER SUPPLY FOR AT LEAST ONE HYDRAULIC MACHINE
FR3083839B1 (en) * 2018-07-16 2020-10-23 Poclain Hydraulics Ind HYDRAULIC ASSISTANCE CIRCUIT INCLUDING IMPROVED BOOSTERING MEANS

Also Published As

Publication number Publication date
FR3115571A1 (en) 2022-04-29
WO2022084623A1 (en) 2022-04-28

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