EP0922858A2 - Machine hydrostatique avec bloc de culasse rotatif et plateau-came d'inclinaison variable - Google Patents

Machine hydrostatique avec bloc de culasse rotatif et plateau-came d'inclinaison variable Download PDF

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Publication number
EP0922858A2
EP0922858A2 EP98121385A EP98121385A EP0922858A2 EP 0922858 A2 EP0922858 A2 EP 0922858A2 EP 98121385 A EP98121385 A EP 98121385A EP 98121385 A EP98121385 A EP 98121385A EP 0922858 A2 EP0922858 A2 EP 0922858A2
Authority
EP
European Patent Office
Prior art keywords
adjusting
machine according
hydrostatic machine
connecting member
swivel plate
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Withdrawn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
EP98121385A
Other languages
German (de)
English (en)
Other versions
EP0922858A3 (fr
Inventor
Dieter Ringhut
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 EP0922858A2 publication Critical patent/EP0922858A2/fr
Publication of EP0922858A3 publication Critical patent/EP0922858A3/fr
Withdrawn legal-status Critical Current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
    • F04B1/30—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 invention relates to a hydrostatic machine according to the preamble of Claim 1.
  • Fine adjustment of the swivel plate may be required, e.g. B. in cases where a certain, e.g. B. minimum or maximum throughput volume or the so-called The zero position of the swivel plate should be set exactly.
  • the fine adjustment enables.
  • DE 42 02 631 C2 describes a hydrostatic machine of the type specified at the outset with an adjusting cylinder and an adjusting device for adjusting the swivel plate intended.
  • This known adjusting device is a mechanical / hydraulic adjustment device, in which the adjusting piston of the Adjusting cylinder can be rotated by an adjusting mechanism so that a Adjusting piston arranged throttle is variable in its cross-sectional size, the controls hydraulic pressure of the adjusting cylinder.
  • the adjustment mechanism has an associated wall of the housing the eccentric shaft penetrating the machine and rotatably mounted therein, the Eccentric engages in a longitudinal groove of the adjusting piston and twist it and in the respective adjusted position in the circumferential direction can lock.
  • This well-known Design has proven to be a viable solution.
  • the adjusting device comprises an adjustable throttle.
  • One adjustable throttle has the disadvantage in the present context that it different viscosities and / or different temperatures of the hydraulic Medium sets different adjustment values, so that the accuracy of such Adjustment is often not sufficient.
  • the known one Adjustment device complex and therefore expensive to manufacture.
  • the invention has for its object a hydrostatic machine of the beginning Specify the type specified so that a exact adjustment is possible.
  • the effective distance between the Adjusting piston and the swivel plate can be mechanically enlarged or reduced and thus precisely adjustable, the aforementioned hydraulic interference influences in the Functional range of the mechanical adjustment device are prevented.
  • the inventive design by a simple and inexpensive to produce Construction from, whereby small designs are also possible.
  • Another advantage of Design according to the invention is that the adjusting device completely in the housing of the machine can be integrated and easily by a Access opening in the wall of the housing is accessible from the outside for the purpose of adjustment the desired swivel position of the swivel plate.
  • the access opening can be in simply by a closure element, e.g. B. a stopper, closed be protected from damage and / or contamination Arrangement of the adjusting device is reached.
  • the adjusting device into the connecting member to integrate and telescopic training the link or in the Connection between the connecting link and the swivel plate and / or in the Integrate connection between the link and the adjusting piston.
  • further features are proposed which, if a small, an easy-to-use and reliable construction that is easy to use and enable precise adjustment.
  • the hydrostatic machine is in the present Embodiment an axial piston machine in the swash plate design.
  • the machine 1 has a housing 2 with a cup-shaped housing part 2a, the Housing interior 3 is closed by a so-called connection block 2b, the is detachably screwed to the housing part 2a by screws, not shown.
  • connection block 2b At the A control disk 4, which is known per se, is held on the inside of the connection block 2b Has control slots.
  • cylinder drum 5 On the inside of the control disc 4 is in Housing interior 3 arranged cylinder drum 5, which rotatably on a drive shaft 6 is mounted, which passes through the bottom wall 2c of the housing 2 in a bearing hole 7 and therein or in a bearing part 8 inserted therein by means of a generally 9 designated pivot bearing is rotatably mounted.
  • a swivel plate 12 Between the cylinder drum 5 and the Bottom wall 2c is in the housing interior 3, a swivel plate 12, which of the Drive shaft 6 is penetrated in a clearance, and about the axis of rotation 13 of the Drive shaft 6 non-rotatable, however, about a perpendicular to the axis of rotation 13 Swivel axis 14 is pivotally mounted in the housing interior 3.
  • cylinder drum 5 In the cylinder drum 5 are a number approximately in the longitudinal direction of the Rotating axis 13 extending working cylinder 17 arranged distributed in the circumferential direction, in which working pistons 18 are mounted to be longitudinally displaceable, those of the swivel plate 12 projecting open ends of the working cylinder 17 with piston heads 19 which each connected to a slide shoe 21 by a swivel joint which is effective on all sides are, which rests on a flat sliding surface 12a of the swivel plate 12 and by a Retaining device 22 is held on the sliding surface 12a in a manner known per se.
  • a hint supply line and discharge line for the hydraulic working medium are designated with 23a, 23b and run in a manner known per se through the connection block 2b, whereby they pass through the two opposing kidney-shaped control slots in the control disk 4 are connected to the working cylinders 17 by associated channels.
  • the machine 1 has a throughput volume setting device designated by 24, which is located in the housing 2 and thus from external influences and damage as well as dirt is arranged protected.
  • the adjusting device 24 comprises one laterally next to the cylinder drum 5 longitudinally arranged adjusting cylinder 25, the Connection block 2b is supported, engages on the swivel plate 12 and is telescopic, whereby the swash plate 12 is pivotable and in the respective pivot position is noticeable.
  • the adjusting cylinder 25 is by a inwardly open cylinder bore 25a in the connection block 2b and one axially therein displaceable adjusting piston 25b formed, one in the cylinder bore 25a Limits pressure chamber 26, to which a pressure line 27 extends, in which Inductively illustrated throttle 28 can be arranged.
  • the adjusting piston 25 is by a connecting member 29, here in the form of a piston rod 29a and this connecting bearings 31, 32, pivotally connected to the swivel plate 12.
  • a connecting member 29a for positive connection are in the adjusting piston 25b and in the swivel plate 12 Bearing 31, 32 forming recesses 31a, 32a for the ends of the z. B. by a Round pin formed piston rod 29a is provided.
  • the recesses 31a, 32a are like this flat or convergent in that the piston rod 29a has a tilting movement therein can perform and to increase the contact area and surface pressure between the Piston rod 29 and the respective recess base each in the form of a spherical segment concavely rounded, the end faces of the piston rod 29 correspondingly spherically section-shaped are convexly rounded.
  • the respectively set swivel position of the swivel plate 12 is due to the Equilibrium of a set pressure p in the pressure chamber 26 and the Pressure area of the adjusting piston 25b resulting adjusting force F1 and a restoring force F2, which in the present exemplary embodiment is represented on the swivel disk 12 effective return spring 33, here one between the swivel plate 12 and the Bottom wall 2c clamped compression spring, guaranteed.
  • the swivel plate 12 is provided with a corresponding one Swing out dimension. This is done by increasing the set pressure p what e.g. B. by a hinted control valve 34, z. B. a pressure control valve, can be accomplished.
  • the Set pressure p to reduce which in the present embodiment by a corresponding setting can be made on the control valve 34.
  • the gravity disk 12 is automatically pivoted back by the restoring force F2.
  • piston rod 29 with a spherical shape
  • Restraint device (not shown) a positive connection between the associated piston rod end and the adjusting piston 25b and / or the swivel plate Create 12.
  • a mechanical adjustment device 41 is assigned to the setting device 24, with which the swivel plate 12 is adjustable independently of the setting device 24, is particularly finely adjustable for the purpose of adjustment, in particular fine adjustment, of one certain throughput volume or for the purpose of coordinating the throughput volume of the Machine 1 taking into account specified tolerances or operating data.
  • the Adjustment device 41 is arranged in the housing 2 and thus against external damage or dirt is protected.
  • the adjustment device 41 is preferably from the outside accessible so that an adjustment even after the installation of the machine 1 and also after the installation of the machine 1 in a work machine is adjustable.
  • the adjustment device 41 is in the wall of the housing 2 associated adjustment attack members opposite an access opening 40 is arranged through which the adjusting device 41 or the adjustment attack member 41 is accessible.
  • the access opening 40 is through a Closure element 40a releasably closable, for. B. by means of a screw plug in a threaded hole forming the access opening 40 can be screwed in.
  • the adjusting device has an adjusting member 42 which is arranged in the longitudinal direction of the Link 29 adjustable and in the respective adjustment position by means of a Locking device 43 is lockable.
  • a gear 44 which may be formed by an eccentric drive or screw drive can and is preferably a reduction gear, so that the adjustment in the sense of a Fine adjustment can be made.
  • a preferably rotatable as the actuating element mounted pivot pin 45 serve a tool engagement element 46, z. B. a slot, has a wrench size or an internal polygon for a corresponding tool.
  • the adjusting device 41 is between one Connection or bearing part 51 for the piston rod 29 a and the swivel plate 12 arranged.
  • the bearing part 51 is a special component that the present embodiment on its side facing the piston rod 29a Has recess 32a and in a along the piston rod 29a guide 52nd slidably mounted and lockable in the respective adjustment position.
  • the leadership 52 is formed by a bore 53 in which a cylindrical journal 54 sits and with a small amount of movement is slidably mounted.
  • a pivot pin 45 On the piston rod 29 opposite side is a pivot pin 45, which is round in cross section and has a bearing part 51 on it attacking eccentric 56 rotatably mounted in a transverse bore 57 and through the Locking device 43 lockable.
  • the latter can be formed in that the Cross bore 57 is at least partially a threaded bore in which the adjusting bolt 45 with a thread 58, the rotational position of the pivot pin 45 by a screwed him and braced against the swivel plate 12 lock nut 59 can be secured.
  • the access opening 40 is in the Circumferential wall 2d of the housing 2 arranged.
  • the transverse bore 57 on both sides of the bearing part 51 and one Eccentric 56 to be provided, which is located between two pivot bearing sections of the pivot pin 45 is arranged and is preferably integrally connected to them.
  • the eccentric 56 forms the Adjustment gear 44, which is a reduction gear and the rotary movement of the Adjusting bolt 55 converts into a smaller radial movement of the eccentric 56.
  • This Adjustment device 41 enables a stepless adjustment of the by the bearing part 51st formed adjusting member 42, whereby the distance between the adjusting piston 25b and thus the connection length between these parts and the swivel position of the Swivel disc 12 is adjustable.
  • FIG. 2 differs from the embodiment 1 in that instead of an eccentric 26 with a curved
  • An eccentric 56 is provided on the circumferential surface, which eccentrically distributes several arranged surfaces 56a, 56b, 56c, which are at different distances from the Axis of rotation 61 of the pivot pin 45 are arranged.
  • This adjustment device 41 enables an adjustment in stages by turning the respective eccentric surface 56a, 56b, 56c of the pivot pin 55 is brought into contact with the bearing part 51.
  • the locking device 43 is formed by the flat eccentric surfaces 56a, 56b, 56c which due to the flat contact, prevent the pivot pin 45 from turning back.
  • the adjusting device 41 in the Link 29 or here the piston rod 29a integrated is telescopic.
  • the piston rod 29a consists of two piston rod parts 29b, 29c, of which a piston rod part 29b protrudes a threaded pin 65 which in a Threaded bore 66 of the other piston rod part 29c can be screwed in.
  • the adjuster 42 is in this embodiment by the one acting on the heavy plate 12 Piston rod part 29b formed, wherein on the swivel part 12 none by a separate Component formed connecting or bearing part needs to be present.
  • the present embodiment is that which forms a connecting or bearing part 51 Recess 32a arranged directly in the pivot part 12.
  • the locking device 43 can also in this embodiment by a screwed onto the threaded pin 65
  • Counter nut 59 can be formed, which is clamped against the piston rod part 29c.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
EP98121385A 1997-12-12 1998-11-10 Machine hydrostatique avec bloc de culasse rotatif et plateau-came d'inclinaison variable Withdrawn EP0922858A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1997155386 DE19755386C2 (de) 1997-12-12 1997-12-12 Hydrostatische Maschine mit einer drehbar gelagerten Zylindertrommel und einer einstellbaren Schwenkscheibe
DE19755386 1997-12-12

Publications (2)

Publication Number Publication Date
EP0922858A2 true EP0922858A2 (fr) 1999-06-16
EP0922858A3 EP0922858A3 (fr) 2000-04-05

Family

ID=7851759

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98121385A Withdrawn EP0922858A3 (fr) 1997-12-12 1998-11-10 Machine hydrostatique avec bloc de culasse rotatif et plateau-came d'inclinaison variable

Country Status (2)

Country Link
EP (1) EP0922858A3 (fr)
DE (1) DE19755386C2 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004109060A1 (fr) * 2003-06-06 2004-12-16 Brueninghaus Hydromatik Gmbh Moteur a pistons axiaux reversible a reglage longitudinal
WO2008138603A1 (fr) 2007-05-14 2008-11-20 Robert Bosch Gmbh Machine à pistons axiaux pourvue d'un dispositif de rappel
EP2050984A4 (fr) * 2006-06-12 2011-01-12 Yanmar Co Ltd Transmission hydraulique a variation continue
WO2012003824A1 (fr) * 2010-07-08 2012-01-12 Robert Bosch Gmbh Machine hydraulique à piston axial
EP2772379A1 (fr) * 2013-02-27 2014-09-03 MAN Truck & Bus AG Système d'entraînement pour un véhicule automobile doté d'un système de pompage constant réglable
WO2014187512A1 (fr) * 2013-05-22 2014-11-27 Hydac Drive Center Gmbh Pompe à pistons axiaux de type à plateau inclinable
WO2015086260A1 (fr) * 2013-12-11 2015-06-18 Robert Bosch Gmbh Machine à plateau oscillant
EP2138719A4 (fr) * 2007-03-29 2016-06-01 Kawasaki Heavy Ind Ltd Moteur de pompe à pistons de type à plateau oscillant et son procédé de fabrication
EP3171022A4 (fr) * 2014-07-16 2017-07-05 Kabushiki Kaisha Toyota Jidoshokki Pompe à piston à capacité variable

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007062887B4 (de) 2007-12-28 2021-12-02 Robert Bosch Gmbh System zur Fixierung eines einheitlichen Exzenterbolzens

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2455062A (en) * 1943-07-12 1948-11-30 Lucas Ltd Joseph Variable stroke pump
DE2204466A1 (de) * 1972-01-31 1973-08-09 Linde Ag Bewegungsuebertragungsmechanik
US3834280A (en) * 1973-02-13 1974-09-10 Lucas Industries Ltd Actuators for stroke control in hydraulic machines
JPH0526151A (ja) * 1991-07-16 1993-02-02 Toyota Autom Loom Works Ltd 油圧駆動装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7367258B2 (en) 2003-06-06 2008-05-06 Brueninghaus Hydromatik Gmbh Longitudinally adjustable reversible axial piston machine
WO2004109060A1 (fr) * 2003-06-06 2004-12-16 Brueninghaus Hydromatik Gmbh Moteur a pistons axiaux reversible a reglage longitudinal
CN1798904B (zh) * 2003-06-06 2011-04-20 布鲁宁赫斯海诺马帝克有限公司 纵向可调整的可逆轴向活塞机
US8302525B2 (en) 2006-06-12 2012-11-06 Yanmar Co., Ltd. Hydraulic stepless transmission
EP2050984A4 (fr) * 2006-06-12 2011-01-12 Yanmar Co Ltd Transmission hydraulique a variation continue
EP2138719A4 (fr) * 2007-03-29 2016-06-01 Kawasaki Heavy Ind Ltd Moteur de pompe à pistons de type à plateau oscillant et son procédé de fabrication
US8418599B2 (en) 2007-05-14 2013-04-16 Robert Bosch Gmbh Axial piston machine having a return device
WO2008138603A1 (fr) 2007-05-14 2008-11-20 Robert Bosch Gmbh Machine à pistons axiaux pourvue d'un dispositif de rappel
WO2012003824A1 (fr) * 2010-07-08 2012-01-12 Robert Bosch Gmbh Machine hydraulique à piston axial
US9920751B2 (en) 2010-07-08 2018-03-20 Robert Bosch Gmbh Hydraulic axial piston machine
EP2772379A1 (fr) * 2013-02-27 2014-09-03 MAN Truck & Bus AG Système d'entraînement pour un véhicule automobile doté d'un système de pompage constant réglable
WO2014187512A1 (fr) * 2013-05-22 2014-11-27 Hydac Drive Center Gmbh Pompe à pistons axiaux de type à plateau inclinable
CN105339657A (zh) * 2013-05-22 2016-02-17 贺德克传动中心有限公司 以斜盘式结构形式的轴向活塞泵
US9664184B2 (en) 2013-05-22 2017-05-30 Hydac Drive Center Gmbh Axial piston pump having a swash-plate type construction
AU2014270792B2 (en) * 2013-05-22 2017-08-31 Hydac Drive Center Gmbh Axial piston pump having a swash-plate type construction
WO2015086260A1 (fr) * 2013-12-11 2015-06-18 Robert Bosch Gmbh Machine à plateau oscillant
EP3171022A4 (fr) * 2014-07-16 2017-07-05 Kabushiki Kaisha Toyota Jidoshokki Pompe à piston à capacité variable

Also Published As

Publication number Publication date
EP0922858A3 (fr) 2000-04-05
DE19755386C2 (de) 1999-10-21
DE19755386A1 (de) 1999-06-24

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