DE102012015018A1 - Hydrostatic axial piston machine in swash plate design, has adjusting piston, which is secured against rotation about its longitudinal axis and has cylindrically curved convex contact surface at its swivel plate-sided front side - Google Patents
Hydrostatic axial piston machine in swash plate design, has adjusting piston, which is secured against rotation about its longitudinal axis and has cylindrically curved convex contact surface at its swivel plate-sided front side Download PDFInfo
- Publication number
- DE102012015018A1 DE102012015018A1 DE201210015018 DE102012015018A DE102012015018A1 DE 102012015018 A1 DE102012015018 A1 DE 102012015018A1 DE 201210015018 DE201210015018 DE 201210015018 DE 102012015018 A DE102012015018 A DE 102012015018A DE 102012015018 A1 DE102012015018 A1 DE 102012015018A1
- Authority
- DE
- Germany
- Prior art keywords
- axis
- swash plate
- piston
- adjusting
- rotation
- 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.)
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Classifications
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- 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
- F04B1/2078—Swash plates
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- 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
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- 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
Abstract
Description
Die Erfindung bezieht sich auf eine hydrostatische Axialkolbenmaschine in Schrägscheibenbauweise mit einem Gehäuse, in dessen Gehäuseinnenraum eine Zylindertrommel um eine Drehachse drehbar gelagert ist, in der mehrere, etwa axial verlaufende Zylinderbohrungen ausgebildet sind und in denen Kolben bewegbar geführt sind, die sich über Gleitschuhe an einer Schwenkscheibe abstützen, die von einer Verstelleinrichtung um eine quer zur Drehachse gerichtete Schwenkachse schwenkbar gelagert ist, wobei die Verstelleinrichtung einen in dem Gehäuse etwa parallel zur Drehachse ausgebildeten Zylinder aufweist, in dem ein von einem hydraulischen Verstelldruck beaufschlagbarer Verstellkolben verschiebbar angeordnet ist, durch den die Schwenkscheibe auf ihrer den Kolben abgewandten Seite um die Schwenkachse schwenkbar beaufschlagbar ist.The invention relates to a hydrostatic axial piston machine in a swash plate design with a housing in the housing interior, a cylinder drum is rotatably mounted about an axis of rotation in which a plurality of, approximately axially extending cylinder bores are formed and in which pistons are movably guided, which slide shoes on a Supporting swivel disk, which is pivotally mounted by an adjusting device about a pivot axis directed transversely to the axis of rotation, wherein the adjusting device comprises a cylinder formed approximately parallel to the axis of rotation in the housing, in which an adjusting piston acted upon by a hydraulic adjusting pressure is displaceably arranged, through which the swash plate on its side facing away from the piston can be acted upon pivotable about the pivot axis.
Aufgabe der Erfindung ist es eine Axialkolbenmaschine der eingangs genannten Art zu schaffen, die einen einfachen, wenige Bauteile aufweisenden Aufbau bei guter Haltbarkeit über die vorgesehene Lebensdauer besitzt.The object of the invention is to provide an axial piston machine of the type mentioned, which has a simple, few components having structure with good durability over the intended life.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass der gegen ein Verdrehen um seine Längsachse gesicherte Verstellkolben an seiner schwenkscheibenseitigen Stirnseite eine um eine zur Schwenkachse parallele Achse zylinderartig konvex gewölbte Kontaktfläche aufweist, mit der der Verstellkolben an einer zur Schwenkachse annähernd radialen Abstützfläche der Schwenkscheibe in Anlage ist.This object is achieved in that the secured against rotation about its longitudinal axis adjusting piston on its pivot-side end face has a parallel to the pivot axis axis cylinder-like convex contact surface with which the adjusting piston to a pivot axis approximately radially supporting surface of the swash plate in abutment ,
Eine weitere Lösung der Aufgabe besteht darin, dass der Verstellkolben an seiner schwenkscheibenseitigen Stirnseite eine radial zu seiner Längsachse gerichtete Kontaktfläche aufweist, mit der der Verstellkolben an einer um eine zur Schwenkachse parallele Achse zylinderartig konvex gewölbten Abstützfläche der Schwenkscheibe in Anlage ist.A further solution of the problem is that the adjusting piston has on its pivot-side end face a radially directed to its longitudinal axis contact surface with which the adjusting piston on a parallel to the pivot axis axis cylinder-like convex support surface of the swash plate is in abutment.
Durch diese Ausbildung weisen die Verstelleinrichtungen in kostengünstiger Weise nur wenige, einfach ausgebildete Bauteile auf, deren Logistikaufwand auch gering ist. Bei beiden Ausführungen ist eine zylinderartig gewölbte Fläche mit Linienberührung an einer ebenen Fläche in Anlage, so daß bei geringen Reibwiderständen ein ebenfalls geringer Verschleiß an der zylinderartig gewölbten Fläche vorhanden ist.With this design, the adjustment in a cost effective manner only a few, simply trained components whose logistics cost is low. In both embodiments, a cylinder-like curved surface with line contact on a flat surface in abutment, so that at low frictional resistance also a low wear on the cylinder-like curved surface is present.
Dieser geringe Verschleiß, der nur zu einer Anflachung im Zehntelmillimeterbereich führt, wird durch ein automatisches Nachstellen des Verstellkolbens kompensiert, so daß keine Beeinträchtigung der Funktion erfolgt, wenn der Verstellkolben und der Zylinder einen geringeren Radius aufweisen als die zylinderartig gewölbte Fläche.This low wear, which only leads to a flattening in the tenth of a millimeter range, is compensated by an automatic readjustment of the adjusting, so that no impairment of the function takes place when the adjusting piston and the cylinder have a smaller radius than the cylinder-like curved surface.
Vorzugsweise erstreckt sich die Schwenkachse in einem Abstand zur Drehachse und ist in Bezug auf die Drehachse auf der der Längsachse des Verstellkolbens diametral gegenüberliegenden Seite angeordnet.Preferably, the pivot axis extends at a distance from the axis of rotation and is arranged with respect to the axis of rotation on the longitudinal axis of the adjusting diametrically opposite side.
Zur Minimierung der Gleitreibung zwischen der zylinderartig gewölbten Fläche und der ebenen Fläche kann der Verstellkolben zumindest an seinem schwenkscheibenseitigen Endbereich aus einem harten Buntmetall oder einer Buntmetall enthaltenden Legierung bestehen.In order to minimize the sliding friction between the cylinder-like curved surface and the flat surface, the adjusting piston can consist of a hard non-ferrous metal or a non-ferrous alloy, at least on its pivot-disk-side end region.
Dazu kann der Verstellkolben zumindest an seinem schwenkscheibenseitigen Endbereich aus Messing oder einer Messinglegierung bestehen.For this purpose, the adjusting piston may consist of brass or a brass alloy, at least on its swivel-disk-side end region.
Ist die zylinderartig konvex gewölbte Kontaktfläche des Verstellkolbens kreiszylindrisch konvex ausgebildet und ist die zylinderartig konvex gewölbte Abstützfläche der Schwenkscheibe kreiszylindrisch konvex ausgebildet, so ist deren Herstellung einfach durchführbar.If the cylinder-like convexly curved contact surface of the adjusting piston has a circular-cylindrical convexity and if the cylindrical-convexly curved supporting surface of the swivel disk has a circular-cylindrical convexity, then its manufacture is easy to carry out.
Zur Verdrehsicherung des Verstellkolbens kann in einfacher, leicht herstellbarer Ausbildung die Abstützfläche der Schwenkscheibe der Boden einer in der Schwenkscheibe ausgebildete Vertiefung sein, die einen von einem Kreisquerschnitt abweichenden Querschnitt aufweist und in die der an seinem schwenkscheibenseitigen Ende einen entsprechenden Querschnitt aufweisende Verstellkolben hineinragt.To prevent rotation of the adjusting, the support surface of the swash plate may be in a simple, easily produced training the bottom of a recess formed in the swash plate, which has a deviating from a circular cross-section and into which protrudes at its swivel plate side end a corresponding cross-section having adjusting piston.
Zur Begrenzung des Schwenkweges der Schwenkscheibe kann zumindest ein Anschlag an dem Gehäuse angeordnet sein.To limit the pivoting of the swash plate can be arranged at least one stop on the housing.
Vorzugsweise ist die Axialkolbenmaschine in Schrägscheibenbauweise ein Axialkolbenmotor in Schrägscheibenbauweise.Preferably, the axial piston machine is a swash plate design an axial piston motor in swash plate design.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im Folgenden näher beschrieben.An embodiment of the invention is illustrated in the drawing and will be described in more detail below.
Es zeigenShow it
Die in
Ein zweiter Wellenabschnitt weist einen Außenverzahnungsbereich
Die Zylindertrommel
Eine dem Arbeitsraum entfernte Gelenkkugel
Eine Rückzugplatte
Auf der der Schwenkscheibe
Die Schwenkscheibe
Die Verstelleinrichtung
Das aus dem Zylinder
Mit dem Bereich seiner kreiszylindrisch konvex gewölbten Kontaktfläche
Die Kontaktfläche
Wird der Zylinder
Eine Rückstellung der Schwenkscheibe
Claims (11)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201210015018 DE102012015018A1 (en) | 2012-07-28 | 2012-07-28 | Hydrostatic axial piston machine in swash plate design, has adjusting piston, which is secured against rotation about its longitudinal axis and has cylindrically curved convex contact surface at its swivel plate-sided front side |
CN201310318585.7A CN103573572B (en) | 2012-07-28 | 2013-07-26 | The axial piston machine of the hydrostatic constructed in swash plate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201210015018 DE102012015018A1 (en) | 2012-07-28 | 2012-07-28 | Hydrostatic axial piston machine in swash plate design, has adjusting piston, which is secured against rotation about its longitudinal axis and has cylindrically curved convex contact surface at its swivel plate-sided front side |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102012015018A1 true DE102012015018A1 (en) | 2014-01-30 |
Family
ID=49912069
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE201210015018 Withdrawn DE102012015018A1 (en) | 2012-07-28 | 2012-07-28 | Hydrostatic axial piston machine in swash plate design, has adjusting piston, which is secured against rotation about its longitudinal axis and has cylindrically curved convex contact surface at its swivel plate-sided front side |
Country Status (2)
Country | Link |
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CN (1) | CN103573572B (en) |
DE (1) | DE102012015018A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019112237A1 (en) * | 2019-04-12 | 2020-10-15 | OET GmbH | Reciprocating compressor |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2633725B2 (en) * | 1990-07-24 | 1997-07-23 | 日立建機株式会社 | Variable capacity swash plate type hydraulic rotary machine |
JP2968217B2 (en) * | 1996-10-29 | 1999-10-25 | 住友イートン機器株式会社 | Swash plate type variable displacement piston pump / motor |
DE19819960B4 (en) * | 1998-05-05 | 2005-03-03 | Robert Bosch Gmbh | Axial piston machine with integrated Schwenkwegmeßsystem |
JP3913920B2 (en) * | 1999-01-29 | 2007-05-09 | 日立建機株式会社 | Variable capacity swash plate type hydraulic rotating machine |
JP2002048054A (en) * | 2000-08-07 | 2002-02-15 | Hitachi Constr Mach Co Ltd | Variable displacement swash plate type hydraulic rotating machine |
JP2002202048A (en) * | 2000-12-28 | 2002-07-19 | Komatsu Ltd | Variable displacement fluid machine |
JP2003113772A (en) * | 2001-10-02 | 2003-04-18 | Hitachi Constr Mach Co Ltd | Variable displacement type hydraulic rotary machine with swash plate |
JP2003148327A (en) * | 2001-11-16 | 2003-05-21 | Hitachi Constr Mach Co Ltd | Variable displacement swash plate type hydraulic rotating machine |
JP2008208822A (en) * | 2007-02-28 | 2008-09-11 | Nachi Fujikoshi Corp | Swash plate type hydraulic motor |
-
2012
- 2012-07-28 DE DE201210015018 patent/DE102012015018A1/en not_active Withdrawn
-
2013
- 2013-07-26 CN CN201310318585.7A patent/CN103573572B/en active Active
Also Published As
Publication number | Publication date |
---|---|
CN103573572B (en) | 2017-11-17 |
CN103573572A (en) | 2014-02-12 |
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R005 | Application deemed withdrawn due to failure to request examination |