EP0297401A3 - Hydraulische Steuervorrichtung - Google Patents

Hydraulische Steuervorrichtung Download PDF

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Publication number
EP0297401A3
EP0297401A3 EP19880109858 EP88109858A EP0297401A3 EP 0297401 A3 EP0297401 A3 EP 0297401A3 EP 19880109858 EP19880109858 EP 19880109858 EP 88109858 A EP88109858 A EP 88109858A EP 0297401 A3 EP0297401 A3 EP 0297401A3
Authority
EP
European Patent Office
Prior art keywords
pressure
control valve
pump line
directional control
increase
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
EP19880109858
Other languages
English (en)
French (fr)
Other versions
EP0297401B1 (de
EP0297401A2 (de
Inventor
Rudolf Brunner
Heiner Feichtenbeiner
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.)
Heilmeier and Weinlein Fabrik fuer Oel Hydraulik GmbH and Co KG
Original Assignee
Heilmeier and Weinlein Fabrik fuer Oel Hydraulik GmbH and Co KG
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 Heilmeier and Weinlein Fabrik fuer Oel Hydraulik GmbH and Co KG filed Critical Heilmeier and Weinlein Fabrik fuer Oel Hydraulik GmbH and Co KG
Priority to AT88109858T priority Critical patent/ATE101899T1/de
Publication of EP0297401A2 publication Critical patent/EP0297401A2/de
Publication of EP0297401A3 publication Critical patent/EP0297401A3/de
Application granted granted Critical
Publication of EP0297401B1 publication Critical patent/EP0297401B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
    • F15B11/165—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load for adjusting the pump output or bypass in response to demand
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/20—Means for actuating or controlling masts, platforms, or forks
    • B66F9/22—Hydraulic devices or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30505—Non-return valves, i.e. check valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3105—Neutral or centre positions
    • F15B2211/3111—Neutral or centre positions the pump port being closed in the centre position, e.g. so-called closed centre
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/321—Directional control characterised by the type of actuation mechanically
    • F15B2211/324—Directional control characterised by the type of actuation mechanically manually, e.g. by using a lever or pedal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/35—Directional control combined with flow control
    • F15B2211/351—Flow control by regulating means in feed line, i.e. meter-in control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/605—Load sensing circuits
    • F15B2211/6051—Load sensing circuits having valve means between output member and the load sensing circuit
    • F15B2211/6055—Load sensing circuits having valve means between output member and the load sensing circuit using pressure relief valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/615—Filtering means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7052—Single-acting output members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7053—Double-acting output members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • F15B2211/7135—Combinations of output members of different types, e.g. single-acting cylinders with rotary motors

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Civil Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Geology (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

Bei bekannten hydraulischen Steuervorrichtungen mit mindestens einem einem Verbraucher (35) vorgeschalteten Wegeventil (2m, 2′), mit einer an die Pumpenleitung angeschlossenen Druckwaage (7) und mit einem von der Pumpenleitung (4) ausgehenden Steuerleitungskreis, der an eine Lastdruck-Anzapfung des Wegeventils anschließbar ist und zur Druckanhebung erste und zweite Drosselstellen (14, 15) enthält, ist die Druckanhebung über den gesamten Arbeitsbereich des Wegeventils (2, 2′) gleichbleibend, obwohl der Höchstwert der Druckanhebung erst bei oder kurz vor Erreichen der maximalen Fördermenge notwendig wäre. Dadurch wird Energie vergeudet. Durch eine für den Eingangsdruck der zweiten Drosselstelle (15) vorgesehene Druckstufe (D), die mittels des Steuerglieds (17, 17′) des Wegenventiles (2, 2′) hubabhängig schaltbar ist, ist sichergestellt, daß die maximale Druckdifferenz zwischen dem Pumpenleitungsdruck P(4) und dem Verbraucherdruck P(3) erst kurz vor dem Bedarf einer hohen Fördermenge eingesteuert wird. Zuvor wird die Druckdifferenz kleiner gehalten. Es resultiert daraus eine wirkungsvollere Energieausnutzung.
EP88109858A 1987-07-03 1988-06-21 Hydraulische Steuervorrichtung Expired - Lifetime EP0297401B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88109858T ATE101899T1 (de) 1987-07-03 1988-06-21 Hydraulische steuervorrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3722083A DE3722083C1 (de) 1987-07-03 1987-07-03 Hydraulische Steuervorrichtung
DE3722083 1987-07-03

Publications (3)

Publication Number Publication Date
EP0297401A2 EP0297401A2 (de) 1989-01-04
EP0297401A3 true EP0297401A3 (de) 1991-03-13
EP0297401B1 EP0297401B1 (de) 1994-02-23

Family

ID=6330891

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88109858A Expired - Lifetime EP0297401B1 (de) 1987-07-03 1988-06-21 Hydraulische Steuervorrichtung

Country Status (5)

Country Link
US (1) US4879945A (de)
EP (1) EP0297401B1 (de)
JP (1) JPS6426002A (de)
AT (1) ATE101899T1 (de)
DE (2) DE3722083C1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3807583C1 (de) * 1988-03-08 1989-03-09 Heilmeier & Weinlein Fabrik Fuer Oel-Hydraulik Gmbh & Co Kg, 8000 Muenchen, De
US4986071A (en) * 1989-06-05 1991-01-22 Komatsu Dresser Company Fast response load sense control system
US5081839A (en) * 1990-01-29 1992-01-21 Caterpillar Inc. Pressure compensated hydraulic system
SE469485B (sv) * 1991-11-29 1993-07-12 Jan Lindholm Foerfarande och floedesregleringsventilaggregat foer floedesbalansering
GB2501486A (en) * 2012-04-24 2013-10-30 Jc Bamford Excavators Ltd Work machine having a hydraulic system comprising variable orifice ratios
CN103754798B (zh) * 2014-02-19 2017-06-20 上海梯佑叉车有限公司 一种半电动自升高装卸车

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2338404A1 (fr) * 1976-01-16 1977-08-12 Bosch Gmbh Robert Dispositif de commande pour au moins deux consommateurs hydrauliques alimentes par une source de fluide
FR2416366A1 (fr) * 1978-01-31 1979-08-31 Bosch Gmbh Robert Appareil de commande pour un dispositif utilisateur mu hydrauliquement
EP0167818A1 (de) * 1984-07-10 1986-01-15 Robert Bosch Gmbh Hydraulische Steuereinrichtung
EP0170815A1 (de) * 1984-07-10 1986-02-12 Robert Bosch Gmbh Hydraulische Steuereinrichtung
FR2571102A1 (fr) * 1984-10-03 1986-04-04 Danfoss As Dispositif de commande pour un appareil utilisateur hydraulique
DE3611244A1 (de) * 1986-04-04 1987-10-08 Rexroth Mannesmann Gmbh Stromregelventil

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3411295A (en) * 1967-05-31 1968-11-19 Gen Signal Corp Hydraulic supply systems
US3815477A (en) * 1973-02-06 1974-06-11 Cross Mfg Inc Control valve instrumentality
US3971216A (en) * 1974-06-19 1976-07-27 The Scott & Fetzer Company Load responsive system with synthetic signal
DE2457451A1 (de) * 1974-12-05 1976-06-10 Bosch Gmbh Robert Hydraulische steuereinrichtung
DE3532816A1 (de) * 1985-09-13 1987-03-26 Rexroth Mannesmann Gmbh Steueranordnung fuer mindestens zwei von mindestens einer pumpe gespeiste hydraulische verbraucher

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2338404A1 (fr) * 1976-01-16 1977-08-12 Bosch Gmbh Robert Dispositif de commande pour au moins deux consommateurs hydrauliques alimentes par une source de fluide
FR2416366A1 (fr) * 1978-01-31 1979-08-31 Bosch Gmbh Robert Appareil de commande pour un dispositif utilisateur mu hydrauliquement
EP0167818A1 (de) * 1984-07-10 1986-01-15 Robert Bosch Gmbh Hydraulische Steuereinrichtung
EP0170815A1 (de) * 1984-07-10 1986-02-12 Robert Bosch Gmbh Hydraulische Steuereinrichtung
FR2571102A1 (fr) * 1984-10-03 1986-04-04 Danfoss As Dispositif de commande pour un appareil utilisateur hydraulique
DE3611244A1 (de) * 1986-04-04 1987-10-08 Rexroth Mannesmann Gmbh Stromregelventil

Also Published As

Publication number Publication date
DE3722083C1 (de) 1988-09-15
ATE101899T1 (de) 1994-03-15
EP0297401B1 (de) 1994-02-23
JPS6426002A (en) 1989-01-27
DE3887932D1 (de) 1994-03-31
US4879945A (en) 1989-11-14
EP0297401A2 (de) 1989-01-04

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