EP2138720A3 - Adjustment device for the adjustment of axial piston engines. - Google Patents

Adjustment device for the adjustment of axial piston engines. Download PDF

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Publication number
EP2138720A3
EP2138720A3 EP09007975A EP09007975A EP2138720A3 EP 2138720 A3 EP2138720 A3 EP 2138720A3 EP 09007975 A EP09007975 A EP 09007975A EP 09007975 A EP09007975 A EP 09007975A EP 2138720 A3 EP2138720 A3 EP 2138720A3
Authority
EP
European Patent Office
Prior art keywords
pressure
control element
adjustment
deflection
adjusting means
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.)
Withdrawn
Application number
EP09007975A
Other languages
German (de)
French (fr)
Other versions
EP2138720A2 (en
Inventor
Manfred Kirchhoff
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.)
Mali Holding AG
Original Assignee
Mali Holding AG
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 Mali Holding AG filed Critical Mali Holding AG
Publication of EP2138720A2 publication Critical patent/EP2138720A2/en
Publication of EP2138720A3 publication Critical patent/EP2138720A3/en
Withdrawn legal-status Critical Current

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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
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/26—Control
    • F04B1/28—Control of machines or pumps with stationary cylinders
    • 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
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F04B1/2014—Details or component parts
    • F04B1/2042—Valves
    • 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
    • F04B49/10—Other safety measures

Abstract

Eine Verstellvorrichtung (10) umfasst hydraulisch betätigbare Stellmittel (11,..,20), welche durch Beaufschlagung von gegeneinander wirkenden Druckflächen mit einem Stelldruck von einer Neutralstellung aus wahlweise in entgegengesetzte Richtungen auslenkbar sind, sowie weiterhin Steuermittel (27,..,35), durch welche nach Massgabe eines Steuersignals die beiden Druckflächen wahlweise mit einem Stelldruck beaufschlagbar ist, welche Steuermittel (27,..,35) ein verschiebbares Steuerelement (27) umfassen, welches nach Massgabe des Steuersignals aus einer Neutralstellung heraus in entgegengesetzte Richtungen auslenkbar ist, und in einer ausgelenkten Position je nach Richtung der Auslenkung die eine oder die andere Druckfläche mit einem mit der Grösse der Auslenkung zunehmenden Stelldruck beaufschlagt, wobei zwischen den Stellmitteln (11,..,20) und dem Steuerelement (27) mechanische Rückführungsmittel (21,..,26) angeordnet sind, welche eine mit der Auslenkung der Stellmittel (11,..,20) zunehmende Rückstellkraft auf das verschiebbare Steuerelement (27) ausüben.An adjusting device (10) comprises hydraulically actuable adjusting means (11, .., 20), which are deflectable by acting on mutually acting pressure surfaces with a setting pressure from a neutral position in either of the opposite directions, and further control means (27, .., 35) by which, in accordance with a control signal, the two pressure surfaces can optionally be acted upon by an actuating pressure, which control means (27, .., 35) comprise a displaceable control element (27) which can be deflected in opposite directions from the neutral position in accordance with the control signal, and in a deflected position, depending on the direction of the deflection, one or the other pressure surface is subjected to an actuating pressure increasing with the magnitude of the deflection, wherein mechanical feedback means (21, 21) between the actuating means (11, .., 20) and the control element (27) .., 26) are arranged, which one with the deflection of the adjusting means (11, .., 20) exert increasing restoring force on the displaceable control element (27).

Bei einer solchen Verstellvorrichtung werden ein vereinfachter, kompakter Aufbau und gleichzeitig grössere Verstellwege dadurch ermöglicht, dass die mechanischen Rückführungsmittel (21,..,26) über gegenläufig wirkende, die Rückstellkraft erzeugende Zugfedern (21, 22) derart an die Stellmittel (11,..,20) angekoppelt sind, dass sich die Wirkung der Zugfedern (21, 22) in der Neutralstellung der Stellmittel (11,..,20) und des Steuerelements (27) aufhebt.

Figure imgaf001
In such an adjustment a simplified, compact design and at the same time larger adjustment paths are made possible in that the mechanical return means (21, .., 26) on counteracting, the restoring force generating tension springs (21, 22) in such a way to the adjusting means (11 ,. ., 20) are coupled, that cancel the action of the tension springs (21, 22) in the neutral position of the adjusting means (11, .., 20) and the control element (27).
Figure imgaf001
EP09007975A 2008-06-24 2009-06-18 Adjustment device for the adjustment of axial piston engines. Withdrawn EP2138720A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH9632008 2008-06-24

Publications (2)

Publication Number Publication Date
EP2138720A2 EP2138720A2 (en) 2009-12-30
EP2138720A3 true EP2138720A3 (en) 2010-01-20

Family

ID=40524962

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09007975A Withdrawn EP2138720A3 (en) 2008-06-24 2009-06-18 Adjustment device for the adjustment of axial piston engines.

Country Status (1)

Country Link
EP (1) EP2138720A3 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010009975A1 (en) * 2010-03-03 2011-09-08 Sauer-Danfoss Gmbh & Co Ohg Hydrostatic drive for use in safety-related functions, comprises closed hydraulic circuit, in which axial-piston motor and axial-piston pump with stroke volume adjusting unit are arranged
DE102012010726B4 (en) * 2011-10-31 2023-10-19 Alpha Fluid Hydrauliksysteme Müller GmbH Proportional hydraulic linear drive
DE102013110568A1 (en) * 2013-09-24 2015-03-26 Claas Selbstfahrende Erntemaschinen Gmbh Drive system for hydraulically driven working members of a working machine
DE102014013925A1 (en) * 2014-09-18 2016-03-24 Alpha Fluid Hydrauliksysteme Müller GmbH Electrohydraulic linear amplifier
DE102017206415A1 (en) * 2017-04-13 2018-10-18 Danfoss Power Solutions Gmbh & Co. Ohg SELF-CONTAINING POWER SUPPLY FOR HYDROSTATIC PUMPS AND MOTORS
DE102020205336A1 (en) 2020-04-28 2021-10-28 Robert Bosch Gesellschaft mit beschränkter Haftung Hydraulic machine with safe zero position and synchronous adjustment cylinder

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1368664A (en) * 1971-08-20 1974-10-02 Bosch Gmbh Robert Hydraulic system comprising a variable displacement pump and a control circuit
US4145887A (en) * 1974-11-06 1979-03-27 U.S. Philips Corporation Swashplate compensation mechanism
GB2026965A (en) * 1978-08-05 1980-02-13 Zahnradfabrik Friedrichshafen Hydraulically operated steering system
DE2913534A1 (en) * 1979-04-04 1980-10-16 Bosch Gmbh Robert Flow and pressure control for variable delivery pump - has flow control valve operated by throttle differential and limited pilot pressure
US5122037A (en) * 1991-07-12 1992-06-16 Sauer, Inc. Manual displacement control
DE4125706C1 (en) * 1991-08-02 1993-01-14 Hydromatik Gmbh, 7915 Elchingen, De
DE19540654C1 (en) * 1995-10-31 1996-12-19 Brueninghaus Hydromatik Gmbh Adjusting device for adjusting piston of hydrostatic engine
US7111545B1 (en) * 2001-05-14 2006-09-26 Hydro-Gear Limited Partnership Return to neutral device for a hydraulic apparatus

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4002017A1 (en) 1990-01-24 1991-07-25 Linde Ag Swashplate-type axial piston machine - has double-armed adjusting lever to external adjusting mechanisms
DE4139085A1 (en) 1991-11-28 1993-06-03 Bosch Gmbh Robert HYDRAULIC AUXILIARY STEERING DEVICE FOR MOTOR VEHICLES
CN1168131A (en) 1995-11-10 1997-12-17 三井石油化学工业株式会社 Method for purifying crude naphthalenedicarboxylic acid
US6260468B1 (en) 1999-02-26 2001-07-17 Sauer-Danfoss Inc. Single-piece proportional control
DE19926965A1 (en) 1999-06-14 2000-12-21 Linde Ag Hydrostatic axial piston engine of swash plate construction has zero position centering unit with two function positions, dependent upon regulator unit charged with/relieved from return force
DE10259314B4 (en) 2002-12-18 2012-11-29 Brueninghaus Hydromatik Gmbh electromagnet

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1368664A (en) * 1971-08-20 1974-10-02 Bosch Gmbh Robert Hydraulic system comprising a variable displacement pump and a control circuit
US4145887A (en) * 1974-11-06 1979-03-27 U.S. Philips Corporation Swashplate compensation mechanism
GB2026965A (en) * 1978-08-05 1980-02-13 Zahnradfabrik Friedrichshafen Hydraulically operated steering system
DE2913534A1 (en) * 1979-04-04 1980-10-16 Bosch Gmbh Robert Flow and pressure control for variable delivery pump - has flow control valve operated by throttle differential and limited pilot pressure
US5122037A (en) * 1991-07-12 1992-06-16 Sauer, Inc. Manual displacement control
DE4125706C1 (en) * 1991-08-02 1993-01-14 Hydromatik Gmbh, 7915 Elchingen, De
DE19540654C1 (en) * 1995-10-31 1996-12-19 Brueninghaus Hydromatik Gmbh Adjusting device for adjusting piston of hydrostatic engine
US7111545B1 (en) * 2001-05-14 2006-09-26 Hydro-Gear Limited Partnership Return to neutral device for a hydraulic apparatus

Also Published As

Publication number Publication date
EP2138720A2 (en) 2009-12-30

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