EP0972940A3 - Power control unit to control the hydraulic power in a drive line - Google Patents

Power control unit to control the hydraulic power in a drive line Download PDF

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Publication number
EP0972940A3
EP0972940A3 EP99113344A EP99113344A EP0972940A3 EP 0972940 A3 EP0972940 A3 EP 0972940A3 EP 99113344 A EP99113344 A EP 99113344A EP 99113344 A EP99113344 A EP 99113344A EP 0972940 A3 EP0972940 A3 EP 0972940A3
Authority
EP
European Patent Office
Prior art keywords
valve
power
secondary circuit
control
control device
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
EP99113344A
Other languages
German (de)
French (fr)
Other versions
EP0972940A2 (en
EP0972940B1 (en
Inventor
Dieter Dittmann
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.)
Brueninghaus Hydromatik GmbH
Original Assignee
Brueninghaus Hydromatik 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 Brueninghaus Hydromatik GmbH filed Critical Brueninghaus Hydromatik GmbH
Publication of EP0972940A2 publication Critical patent/EP0972940A2/en
Publication of EP0972940A3 publication Critical patent/EP0972940A3/en
Application granted granted Critical
Publication of EP0972940B1 publication Critical patent/EP0972940B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • F04B2205/17—Opening width of a throttling device
    • F04B2205/172—Opening width of a throttling device after the pump outlet

Landscapes

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

Abstract

Die Leistungsregelvorrichtung (1) dient zur Regelung der hydraulischen Leistung in einer Arbeitsleitung (2). Zwischen einem Eingang (3) und einem Ausgang (4) ist in der Arbeitsleitung (2) ein Hauptventil (5) angeordnete, das einen Ventilkörper (6) aufweist, der abhängig von seiner Lage die Arbeitsleitung (2) freigibt oder drosselt. Mit dem Eingang (3) ist eine Stromregeleinrichtung (8) verbunden, die einem Nebenkreis (7) einem konstanten Volumenstrom zuführt. In dem Nebenkreis (7) ist eine Ablaufdrossel (12) angeordnet, deren Drosselquerschnitt von der Lage des Ventilkolbens (6) des Hauptventils (5) abhängt. Eine an den Ventilkörper (6) des Hauptventils (5) angrenzende erste Ventilkammer ist in dem Nebenkreis (7) zwischen der Stromregeleinrichtung (8) und der Ablaufdrossel (12) angeordnet. Diese Ventilkammer (13) beaufschlagt den Ventilkörper (6) mit zunehmendem Druck in dem Nebenkreis (7) in Richtung auf einen zunehmenden Öffnungsquerschnitt des Hauptventils (5).

Figure 00000001
The power control device (1) is used to control the hydraulic power in a working line (2). Between an inlet (3) and an outlet (4), a main valve (5) is arranged in the working line (2), which has a valve body (6) which, depending on its position, releases or throttles the working line (2). A flow control device (8) is connected to the input (3) and supplies a secondary circuit (7) with a constant volume flow. An outlet throttle (12) is arranged in the secondary circuit (7), the throttle cross-section of which depends on the position of the valve piston (6) of the main valve (5). A first valve chamber adjoining the valve body (6) of the main valve (5) is arranged in the secondary circuit (7) between the flow control device (8) and the outlet throttle (12). This valve chamber (13) acts on the valve body (6) with increasing pressure in the secondary circuit (7) in the direction of an increasing opening cross section of the main valve (5).
Figure 00000001
EP19990113344 1998-07-14 1999-07-09 Power control unit to control the hydraulic power in a drive line Expired - Lifetime EP0972940B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19831586 1998-07-14
DE1998131586 DE19831586C2 (en) 1998-07-14 1998-07-14 Power control device for controlling the hydraulic power in a work line

Publications (3)

Publication Number Publication Date
EP0972940A2 EP0972940A2 (en) 2000-01-19
EP0972940A3 true EP0972940A3 (en) 2000-09-27
EP0972940B1 EP0972940B1 (en) 2006-08-30

Family

ID=7874042

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19990113344 Expired - Lifetime EP0972940B1 (en) 1998-07-14 1999-07-09 Power control unit to control the hydraulic power in a drive line

Country Status (2)

Country Link
EP (1) EP0972940B1 (en)
DE (2) DE19831586C2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4293284A (en) * 1979-10-09 1981-10-06 Double A Products Company Power limiting control apparatus for pressure-flow compensated variable displacement pump assemblies
DE3541750A1 (en) * 1984-11-26 1986-06-12 Nippondenso Co., Ltd., Kariya, Aichi VOLUME CONTROLLING PUMP DEVICE

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19626793C1 (en) * 1996-07-03 1997-06-26 Brueninghaus Hydromatik Gmbh Hydraulic equipment for parallel regulation of hydrostatic displacement pumps

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4293284A (en) * 1979-10-09 1981-10-06 Double A Products Company Power limiting control apparatus for pressure-flow compensated variable displacement pump assemblies
DE3541750A1 (en) * 1984-11-26 1986-06-12 Nippondenso Co., Ltd., Kariya, Aichi VOLUME CONTROLLING PUMP DEVICE

Also Published As

Publication number Publication date
DE19831586C2 (en) 2000-05-18
DE19831586A1 (en) 2000-02-03
EP0972940A2 (en) 2000-01-19
EP0972940B1 (en) 2006-08-30
DE59913813D1 (en) 2006-10-12

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