FR2256329A1 - Pressure-dependent stroke control of parallel hydraulic pumps - uses parallel hydraulic lines to control units connectable by through-way valve - Google Patents

Pressure-dependent stroke control of parallel hydraulic pumps - uses parallel hydraulic lines to control units connectable by through-way valve

Info

Publication number
FR2256329A1
FR2256329A1 FR7443057A FR7443057A FR2256329A1 FR 2256329 A1 FR2256329 A1 FR 2256329A1 FR 7443057 A FR7443057 A FR 7443057A FR 7443057 A FR7443057 A FR 7443057A FR 2256329 A1 FR2256329 A1 FR 2256329A1
Authority
FR
France
Prior art keywords
parallel hydraulic
way valve
control
lines
pressure
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
FR7443057A
Other languages
French (fr)
Other versions
FR2256329B3 (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.)
Industriewerke Karl Marx Stadt VEB
Original Assignee
Industriewerke Karl Marx Stadt VEB
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 Industriewerke Karl Marx Stadt VEB filed Critical Industriewerke Karl Marx Stadt VEB
Publication of FR2256329A1 publication Critical patent/FR2256329A1/en
Application granted granted Critical
Publication of FR2256329B3 publication Critical patent/FR2256329B3/fr
Granted 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
    • F04B49/08—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
    • 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
    • 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
    • F04B49/007—Installations or systems with two or more pumps or pump cylinders, wherein the flow-path through the stages can be changed, e.g. from series to parallel

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

The arrangement is preferably applied for load summation control to adjust the strokes of a number of parallel hydrostatic pumps as a functionof the hydraulic pressure. Each pump circuit is connected with a control unit via a throttle valve. A through-way valve is interposed between the two parallel lines to the control units, thus permitting these lines to be interconnected at will, when the pump controls will operate in unison. The through-way valve is connected behind the respective throttle valves. It may have lines for hydraulic connection to both sides of the throttle valves.
FR7443057A 1973-12-28 1974-12-27 Pressure-dependent stroke control of parallel hydraulic pumps - uses parallel hydraulic lines to control units connectable by through-way valve Granted FR2256329A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD17569873A DD108795A1 (en) 1973-12-28 1973-12-28

Publications (2)

Publication Number Publication Date
FR2256329A1 true FR2256329A1 (en) 1975-07-25
FR2256329B3 FR2256329B3 (en) 1977-09-23

Family

ID=5494118

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7443057A Granted FR2256329A1 (en) 1973-12-28 1974-12-27 Pressure-dependent stroke control of parallel hydraulic pumps - uses parallel hydraulic lines to control units connectable by through-way valve

Country Status (3)

Country Link
DD (1) DD108795A1 (en)
DE (1) DE2456929A1 (en)
FR (1) FR2256329A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2505780C2 (en) * 1975-02-12 1986-03-06 Robert Bosch Gmbh, 7000 Stuttgart Device for regulating at least one adjustable pump
JP4218261B2 (en) 2002-06-11 2009-02-04 ダイキン工業株式会社 Pumping unit

Also Published As

Publication number Publication date
DE2456929A1 (en) 1975-08-28
FR2256329B3 (en) 1977-09-23
DD108795A1 (en) 1974-10-05

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Legal Events

Date Code Title Description
ST Notification of lapse