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EP2410179B1 - Moyen de réglage pour un piston de réglage, piston de réglage et machine hydraulique - Google Patents

Moyen de réglage pour un piston de réglage, piston de réglage et machine hydraulique Download PDF

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Publication number
EP2410179B1
EP2410179B1 EP20110001065 EP11001065A EP2410179B1 EP 2410179 B1 EP2410179 B1 EP 2410179B1 EP 20110001065 EP20110001065 EP 20110001065 EP 11001065 A EP11001065 A EP 11001065A EP 2410179 B1 EP2410179 B1 EP 2410179B1
Authority
EP
European Patent Office
Prior art keywords
piston
adjusting
hydraulic
locking
adjustment 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.)
Not-in-force
Application number
EP20110001065
Other languages
German (de)
English (en)
Other versions
EP2410179A1 (fr
Inventor
Michael Deeken
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.)
Liebherr Machines Bulle SA
Original Assignee
Liebherr Machines Bulle SA
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 Liebherr Machines Bulle SA filed Critical Liebherr Machines Bulle SA
Publication of EP2410179A1 publication Critical patent/EP2410179A1/fr
Application granted granted Critical
Publication of EP2410179B1 publication Critical patent/EP2410179B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F04B1/30—Control of machines or pumps with rotary cylinder blocks
    • F04B1/32—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block
    • F04B1/324—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block by changing the inclination of the swash plate

Definitions

  • the present invention relates to an adjusting means for an actuating piston, an actuating piston with at least one adjusting means and a hydraulic machine, in particular an axial piston pump or an axial piston motor.
  • hydraulic drives serve, for example, as travel drive, slewing gear drive and / or drive for winches or other tools of the construction machine and include, for example, an axial piston pump or an axial piston motor.
  • Known hydraulic drives have adjusting screws for adjusting the operating characteristics, wherein the adjusting screw z. B. defines a stop for the minimum flow of the axial piston pump or the axial piston motor.
  • This adjusting screw (see also FIG. 1 ) is set during a test run and when the device is taken off. The minimum flow rate (Q min ) is thereby determined. After that, however, no adjustment is possible during operation.
  • hydrostatic displacement unit whose displacement volume is variable between a position with minimum and a position with maximum displacement volume.
  • the displacer volume can be adjusted by means of an adjusting device.
  • the adjusting means for an actuating piston is designed such that the adjusting means comprises at least one adjusting means by which the movement of the actuating piston can be limited and wherein the adjusting means of an at least first position in at least one second position and / or vice versa by means of at least one drive means is adjustable.
  • the use of the drive means in particular has the advantage that a setting with the aim of limiting the movement of the actuating piston is also possible during operation.
  • this setting the tendency to oscillate of the entire system can be advantageously reduced and the efficiency can be increased, since now, in particular, a need-based adjustment of the Minimum flow (Q min ) or the minimum flow (Q max ) by the actuator piston is possible.
  • the drive means may be, for example, a stepper motor or other drive. It is conceivable that the drive is a hydraulic, electrical and / or mechanical drive.
  • the drive means is and / or comprises a hydraulic drive means, by means of which the adjusting means is adjustable from at least a first position to at least a second position and / or vice versa, wherein the hydraulic drive means is or comprises a hydraulic pump.
  • the adjusting means is an adjusting bolt and / or comprises, wherein preferably the adjusting bolt projects into the piston chamber of the actuating piston and forms a stop surface for the piston of the actuating piston.
  • the stop surface can be easily and reliably a limitation of the piston stroke and the piston movement of the actuating piston can be achieved.
  • the adjusting means is hydraulically indirectly and / or directly latched and / or releasable from a latch, wherein the adjusting means in the first and / or second position is hydraulically latched by means of a Verrastungsffens. It is conceivable, for example, that a locking is brought about by applying a latching pressure.
  • Verrastungsmittels is released from the latching by applying the Verrastungstiks or Entrastungstiks, so the latching is secured without pressure, for example by spring force.
  • the latching means has at least one hydraulically activatable, preferably spring-loaded, latching bolt and wherein the latching bolt in the at least one first and at least one second position can be latched in each case in a Verrastungsposition.
  • Verrastungsbolzen are provided. It can be provided that the one or more Verrastungsbolzen are arranged and guided in recesses in the adjustment. By extending The locking bolt can thereby be brought about a simple and secure locking.
  • the latching means is designed so self-adjusting that it automatically engages in the approached Verrastungsposition.
  • the Verrastungsposition be formed rounded so that the locking pin designed as a counterpart snaps self-adjusting due to the shape in the Verrastungsposition.
  • the adjusting means comprises at least a first hydraulic pumping means by means of which the adjusting means is adjustable, and at least a second hydraulic pumping means, by means of which the latching means is releasable and / or latched.
  • the adjusting piston of the adjusting piston of a hydraulic machine and that by means of the adjusting means a minimum and / or maximum volume flow in the hydraulic machine is adjustable.
  • the setting is preferably carried out by limiting or expanding the piston stroke, so that a simple adjustment of the minimum flow (Q min ) or the minimum flow (Q max ) is possible.
  • an actuating piston in particular an actuating piston of a hydraulic machine such as an axial piston pump or an axial piston motor, is provided with at least one adjusting means according to one of claims 1 to 8.
  • the present invention relates to a hydraulic machine with the features of claim 10. Thereafter, it is provided that a hydraulic machine is provided with at least one actuating means according to one of claims 1 to 8 and / or an actuating piston according to claim 9.
  • the hydraulic machine is preferably an axial piston pump or an axial piston motor, as used, for example, in construction machines.
  • the axial piston pump or the axial piston motor may be the drive of a winch or the travel drive of a construction machine. Even with a double motor comprising axial piston pumps on a drill head, it is particularly advantageous if the rotational speed of the motor during operation can be reduced by setting the minimum flow rate (Q min ) as required by the actuating piston.
  • the construction machine is a slow-moving construction machine such as an excavator.
  • a drive motor of a wheeled excavator it is advantageous if the rotational speed of the motor during operation can be reduced by a demand-oriented adjustment of the minimum flow (Q min ) by the actuating piston of the axial piston motor serving as drive motor.
  • FIG. 1 shows a sectional view of a known actuating cylinder 20 for an axial piston pump 10 of a construction machine, not shown.
  • Suction volume can be adjusted via the adjustment of the swivel yoke or the swivel cradle.
  • the actuating piston 22 of the actuating cylinder 20 has an adjusting screw 30 which defines the stop 32 for the minimum flow of the axial piston pump. Because the actuator piston 20 is limited in its stroke by the stop 32.
  • This adjustment screw 30 is adjusted during a test run and when the device is removed.
  • the minimum flow rate (Q min ) is thereby determined.
  • the adjusting screw 30 is therefore also referred to as Q min stop. After the adjustment of the stop 32 and in particular during operation, however, no adjustment is possible.
  • the hydraulically adjustable adjusting means comprises a small adjusting piston 110, the position of which can be adjusted by a first pump 120.
  • the adjusting piston 110 protrudes with its one end into the actuating cylinder 20 'and thereby defines a stop 32' for the actuating piston 22 '.
  • the adjusting piston 110 can be adjusted in three positions 132, 134, 136, each corresponding to a predefined Q min value. It is equally possible that each position corresponds to a predefined Q max value.
  • Each position 132, 134 and 136 is assigned to a latching position 142, 144, 146 or latching recess 142, 144, 146, into which the two latching bolts 130 can engage.
  • the latching positions 142, 144, 146 are arranged in the cylinder housing 25 of the actuating cylinder 20 ', wherein the cylinder housing 25' is also the housing of the adjusting piston 110.
  • the two locking pins 130 are received in recesses 139 in the adjusting piston 110.
  • the locking pins 130 are arranged perpendicularly and radially to the axial direction of the adjusting piston 110.
  • the locking bolts 130 are released by the springs 138, which are tensioned by the application of the latching pressure.
  • the springs 138 are arranged in such a way that they latch the latching bolts 130 in the unpressurized state and that the latching bolts 130 are released by the application of a pressure by means of the pump 150.
  • the detent positions 142, 144 and 146 are shaped such that the locking pin 130 self-aligning in the approached detent position 142, 144, 146 engages. In the present case, this is achieved in that the locking bolts 130 are rounded and the rounded end engages in the locking position 142, 144, 146 formed as a counterpart.
  • the adjusting piston 20 ' is connected via the connecting element 24', the z. B. a bolt receptacle 24 'may be connected to a hydraulic machine.
  • the hydraulic machine is preferably an axial piston pump or an axial piston motor, as used, for example, in construction machines.
  • the axial piston pump or the axial piston motor may be the drive of a winch, a boring head motor or the travel drive of the construction machine.
  • the construction machine is a slow-moving construction machine such as an excavator.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Actuator (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Fluid-Pressure Circuits (AREA)

Claims (9)

  1. Moyen de réglage pour un piston de réglage d'un engin de chantier hydraulique, dans lequel le moyen de réglage présente au moins un moyen d'ajustage au moyen duquel le déplacement du piston de réglage peut être limité et le moyen d'ajustage peut être amené depuis une au moins première position dans au moins une deuxième position et/ou inversement au moyen d'au moins un moyen d'entraînement,
    caractérisé
    en ce que le moyen d'ajustage peut être verrouillé et/ou libéré d'un verrouillage directement et/ou indirectement de manière hydraulique, étant entendu que le moyen d'ajustage peut être verrouillé hydrauliquement dans la première et/ou deuxième position au moyen d'un moyen de verrouillage.
  2. Moyen de réglage selon la revendication 1, caractérisé en ce que le moyen d'entraînement est et/ou comprend un moyen d'entraînement hydraulique, au moyen duquel le moyen d'ajustage peut être amené depuis une au moins première position dans au moins une deuxième position et/ou inversement, étant entendu que le moyen d'entraînement hydraulique est ou comprend de préférence une pompe hydraulique.
  3. Moyen de réglage selon l'une des revendications précédentes, caractérisé en ce que le moyen d'ajustage est un boulon d'ajustage et/ou comprend un boulon d'ajustage, étant entendu que de préférence, le boulon d'ajustage dépasse dans le logement de piston du piston de réglage et forme une surface de butée pour le piston du piston de réglage.
  4. Moyen de réglage selon l'une des revendications précédentes, caractérisé en ce que le moyen de verrouillage présente au moins un boulon de verrouillage pouvant être activé hydrauliquement, de préférence muni d'un ressort de rappel, étant entendu que le boulon de verrouillage peut être verrouillé dans une position de verrouillage respectivement dans l'au moins une première et l'au moins une deuxième position.
  5. Moyen de réglage selon la revendication 4, caractérisé en ce que le moyen de verrouillage est réalisé à ajustage automatique de telle sorte qu'il s'enclenche lui-même automatiquement dans la position de verrouillage atteinte.
  6. Moyen de réglage selon l'une des revendications 3 à 5, caractérisé en ce que le moyen de réglage présente au moins un premier moyen de pompe hydraulique au moyen duquel le moyen d'ajustage peut être ajusté et au moins un deuxième moyen de pompe hydraulique au moyen duquel le moyen de verrouillage peut être verrouillé et/ou déverrouillé.
  7. Piston de réglage, en particulier piston de réglage d'une machine hydraulique comme une pompe à piston axial ou un moteur à piston axial, comprenant au moins un moyen de réglage selon l'une des revendications précédentes.
  8. Piston de réglage selon la revendication 7, caractérisé en ce qu'un débit volumique minimal et/ou maximal dans une machine hydraulique peut être réglé au moyen du moyen de réglage.
  9. Machine hydraulique, en particulier pompe à piston axial ou moteur à piston axial, comprenant au moins un moyen de réglage selon l'une des revendications 1 à 7 et/ou un piston de réglage selon la revendication 7.
EP20110001065 2010-07-22 2011-02-09 Moyen de réglage pour un piston de réglage, piston de réglage et machine hydraulique Not-in-force EP2410179B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH12052010A CH703535B1 (de) 2010-07-22 2010-07-22 Einstellmittel für einen Stellzylinder, Stellzylinder und Hydraulikmaschine.

Publications (2)

Publication Number Publication Date
EP2410179A1 EP2410179A1 (fr) 2012-01-25
EP2410179B1 true EP2410179B1 (fr) 2014-01-01

Family

ID=44063633

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20110001065 Not-in-force EP2410179B1 (fr) 2010-07-22 2011-02-09 Moyen de réglage pour un piston de réglage, piston de réglage et machine hydraulique

Country Status (2)

Country Link
EP (1) EP2410179B1 (fr)
CH (1) CH703535B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11066932B2 (en) 2019-06-26 2021-07-20 Robert Bosch Gmbh Actuating cylinder for a hydrostatic axial piston machine and hydrostatic axial piston machine with an actuating cylinder

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102023207388A1 (de) * 2023-08-02 2025-02-06 Robert Bosch Gesellschaft mit beschränkter Haftung Hydrostatische Axialkolbenmaschine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1001994B (de) * 1955-10-18 1957-02-07 Aschaffenburger Zellstoffwerke Verfahren zur Gewinnung, Abscheidung und Reinigung von organischen carbonylfreien aromatischen und aromatischheterocyclischen stickstoffhaltigen Basen mit Hilfe der kristallisierten schwerloeslichen Molekuel-Verbindungen aus 2, 4-Dinitrophenylhydrazin und den betreffenden Basen
DE4202631C2 (de) * 1992-01-30 1995-07-06 Hydromatik Gmbh Axialkolbenmaschine, insbesondere Hydropumpe der Schiefscheibenbauart oder der Schrägachsenbauart, deren Durchsatzvolumen durch eine Einstellvorrichtung einstellbar ist
DE10100108B4 (de) * 2001-01-03 2013-01-24 Linde Material Handling Gmbh Hydrostatischer Axialkolbenmotor mit veränderbarem minimalen Verdrängervolumen in Abhängigkeit von dem Bremsdruck in der Ablaufseite des Axialkolbenmotors
JP4185374B2 (ja) * 2003-01-29 2008-11-26 株式会社コガネイ 流体圧シリンダ

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11066932B2 (en) 2019-06-26 2021-07-20 Robert Bosch Gmbh Actuating cylinder for a hydrostatic axial piston machine and hydrostatic axial piston machine with an actuating cylinder

Also Published As

Publication number Publication date
EP2410179A1 (fr) 2012-01-25
CH703535A1 (de) 2012-01-31
CH703535B1 (de) 2012-09-14

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