FR2385917A1 - Systeme hydraulique de commande a soupapes de commande detectrice de charge et de commande d'arret - Google Patents

Systeme hydraulique de commande a soupapes de commande detectrice de charge et de commande d'arret

Info

Publication number
FR2385917A1
FR2385917A1 FR7809698A FR7809698A FR2385917A1 FR 2385917 A1 FR2385917 A1 FR 2385917A1 FR 7809698 A FR7809698 A FR 7809698A FR 7809698 A FR7809698 A FR 7809698A FR 2385917 A1 FR2385917 A1 FR 2385917A1
Authority
FR
France
Prior art keywords
pressure
control system
pump
load sensor
sum
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.)
Pending
Application number
FR7809698A
Other languages
English (en)
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.)
Komatsu Ltd
Original Assignee
Komatsu 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
Priority claimed from JP3860377A external-priority patent/JPS52123493A/ja
Application filed by Komatsu Ltd filed Critical Komatsu Ltd
Publication of FR2385917A1 publication Critical patent/FR2385917A1/fr
Pending legal-status Critical Current

Links

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
    • F04B49/002—Hydraulic systems to change the pump delivery

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

Système de commande d'une pompe à déplacement variable. Une soupape 50 fait communiquer un dispositif actionneur de pompe 13 avec une source de pression hydraulique en fonction de la différence entre la somme de la pression de sortie de la pompe 10 et de la pression du dispositif 13 et la somme de cette dernière pression et de la force d'un ressort 58. Une soupape de commande d'arrêt 51 fait communiquer le dispositif 13 avec un réservoir collecteur 38 en réponse à la somme de la pression de sortie de la pompe et de la pression du dispositif actionneur de pompe. Application : commande hydraulique.
FR7809698A 1977-04-06 1978-03-31 Systeme hydraulique de commande a soupapes de commande detectrice de charge et de commande d'arret Pending FR2385917A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3860377A JPS52123493A (en) 1976-04-06 1977-04-06 Fluorinated condensed polymeric substance and uses as soillremover

Publications (1)

Publication Number Publication Date
FR2385917A1 true FR2385917A1 (fr) 1978-10-27

Family

ID=12529841

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7809698A Pending FR2385917A1 (fr) 1977-04-06 1978-03-31 Systeme hydraulique de commande a soupapes de commande detectrice de charge et de commande d'arret

Country Status (3)

Country Link
US (1) US4152896A (fr)
DE (1) DE2813791A1 (fr)
FR (1) FR2385917A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0294776A1 (fr) * 1987-06-09 1988-12-14 Deere & Company Circuit de commande pour un organe de réglage hydraulique

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4399653A (en) * 1980-03-14 1983-08-23 Pylat Jr John A Automatic adjusting deceleration control for a hydrostatically powered device
US4631000A (en) * 1984-07-16 1986-12-23 Sundstrand Corporation Variable displacement hydraulic pressure intensifier
US6179570B1 (en) * 1999-06-08 2001-01-30 Caterpillar Inc. Variable pump control for hydraulic fan drive
CN103043225B (zh) * 2012-12-10 2016-03-30 中国飞机强度研究所 一种用于飞机结构强度试验的力控和位控结合加载系统及方法
US9879667B2 (en) 2014-03-03 2018-01-30 Danfoss Power Solutions Inc. Variable load sense spring setting for axial piston open circuit pump
CN104386265A (zh) * 2014-12-15 2015-03-04 中国飞机强度研究所 一种防作动筒扭转装置
CN104897390B (zh) * 2015-06-23 2018-08-24 中国航空工业集团公司西安飞机设计研究所 一种静力试验用作动筒控制方法及控制系统

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3830594A (en) * 1971-06-28 1974-08-20 Caterpillar Tractor Co Variable displacement pump having pressure compensator control method
DE2456404A1 (de) * 1974-11-29 1976-08-12 Bosch Gmbh Robert Druckregler fuer hydropumpe

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2713772A (en) * 1952-10-16 1955-07-26 Cincinnati Milling Machine Co Hydraulic transmission and control for machine tool tables

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3830594A (en) * 1971-06-28 1974-08-20 Caterpillar Tractor Co Variable displacement pump having pressure compensator control method
DE2456404A1 (de) * 1974-11-29 1976-08-12 Bosch Gmbh Robert Druckregler fuer hydropumpe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0294776A1 (fr) * 1987-06-09 1988-12-14 Deere & Company Circuit de commande pour un organe de réglage hydraulique
US4821514A (en) * 1987-06-09 1989-04-18 Deere & Company Pressure flow compensating control circuit

Also Published As

Publication number Publication date
DE2813791A1 (de) 1978-10-05
US4152896A (en) 1979-05-08

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