DE102015214837A1 - Hydraulic radial piston machine - Google Patents
Hydraulic radial piston machine Download PDFInfo
- Publication number
- DE102015214837A1 DE102015214837A1 DE102015214837.8A DE102015214837A DE102015214837A1 DE 102015214837 A1 DE102015214837 A1 DE 102015214837A1 DE 102015214837 A DE102015214837 A DE 102015214837A DE 102015214837 A1 DE102015214837 A1 DE 102015214837A1
- Authority
- DE
- Germany
- Prior art keywords
- radial piston
- piston machine
- crankshaft
- hydraulic
- machine according
- 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- Withdrawn
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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
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/053—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the 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
- 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
- F04B49/12—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 by varying the length of stroke of the working members
- F04B49/123—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 by varying the length of stroke of the working members by changing the eccentricity of one element relative to another element
- F04B49/125—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 by varying the length of stroke of the working members by changing the eccentricity of one element relative to another element by changing the eccentricity of the actuation means, e.g. cams or cranks, relative to the driving means, e.g. driving shafts
-
- 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
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
- F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
- F04B9/045—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being eccentrics
-
- 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
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/06—Control
- F04B1/07—Control by varying the relative eccentricity between two members, e.g. a cam and a drive shaft
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
Eine hydraulische Radialkolbenmaschine weist eine Kurbelwelle (3) auf, deren Exzentrizität mittels des Exzenterrings (2) verstellbar ist, wodurch das Hubvolumen der Radialkolbenmaschine veränderbar ist. Ein elektrischer Aktuator (4) verstellt über ein Getriebe (5) den Exzenterring (2).A hydraulic radial piston machine has a crankshaft (3), whose eccentricity is adjustable by means of the eccentric ring (2), whereby the displacement of the radial piston machine is variable. An electrical actuator (4) adjusts via a gear (5) the eccentric ring (2).
Description
Die Erfindung betrifft eine hydraulische Radialkolbenmaschine nach der im Oberbegriff von Anspruch 1 näher definierten Art. The invention relates to a hydraulic radial piston machine according to the closer defined in the preamble of
Gattungsgemäße hydraulische Radialkolbenmaschinen weisen eine Kurbelwelle auf, deren Exzentrizität verstellbar ist, um das Hubvolumen der Radialkolbenmaschine zu verändern. Derartige Radialkolbenmaschinen werden auch als innenabgestützte Radialkolbenmaschinen bezeichnet. Diese Radialkolbenmaschinen können als Radialkolbenpumpe oder als Radialkolbenmotor betrieben werden. Generic hydraulic radial piston machines have a crankshaft whose eccentricity is adjustable to change the displacement of the radial piston engine. Such radial piston machines are also referred to as internally supported radial piston machines. These radial piston machines can be operated as a radial piston pump or as a radial piston motor.
Die
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, die Verstellung der Exzentrizität der Kurbelwelle einer hydraulischen Radialkolbenmaschine zu verbessern. The present invention has for its object to improve the adjustment of the eccentricity of the crankshaft of a hydraulic radial piston machine.
Die Aufgabe wird mit einer auch die kennzeichnenden Merkmale des Hauptanspruchs aufweisenden gattungsgemäßen hydraulischen Radialkolbenmaschine gelöst. The object is achieved with a characterizing features of the main claim having generic hydraulic radial piston engine.
Erfindungsgemäß weist die hydraulische Radialkolbenmaschine eine Kurbelwelle auf, deren Exzentrizität verstellbar ist, wodurch das Hubvolumen der Radialkolbenmaschine veränderbar ist, wobei die Exzentrizität der Kurbelwelle mittels eines elektrischen Aktuators verstellbar ist. According to the invention, the hydraulic radial piston engine has a crankshaft whose eccentricity is adjustable, whereby the displacement of the radial piston engine is variable, wherein the eccentricity of the crankshaft is adjustable by means of an electric actuator.
Indem die Exzentrizität der Kurbelwelle mittels eines elektrischen Aktuators verstellbar ist, kann das Hubvolumen der Radialkolbenmaschine präziser eingestellt werden, da die stark schwankenden Kräfteverhältnisse und die Leckagen einer hydraulischen Verstellung eliminiert sind. Zusätzlich besteht die Möglichkeit, einen elektrischen Aktuator in Abhängigkeit der Drehwinkelstellung der Kurbelwelle so anzusteuern, dass nur die zur Verstellung benötigte Kraft wirkt. Dieser Ansteuerung liegt die Erkenntnis zugrunde, dass je nach Drehwinkelstellung der Kurbelwelle unterschiedliche Kräfte auf die Kurbelwelle wirken, welche aus der Druckbeaufschlagung der Kolbenräume der Radialkolbenmaschine resultieren. Insbesondere mit einem Sensor zur Bestimmung des Hubvolumens besteht die Möglichkeit, das Hubvolumen des Radialkolbenmotors durch entsprechende Ansteuerung des elektrischen Aktuators optimal einzuregeln. By the eccentricity of the crankshaft is adjustable by means of an electric actuator, the stroke volume of the radial piston machine can be adjusted more precisely, since the strongly fluctuating power relationships and the leaks of a hydraulic adjustment are eliminated. In addition, it is possible to control an electric actuator as a function of the angular position of the crankshaft so that only the force required for the adjustment acts. This control is based on the finding that, depending on the angular position of the crankshaft, different forces act on the crankshaft, which results from the pressurization of the piston chambers of the radial piston engine. In particular, with a sensor for determining the stroke volume, it is possible to adjust the stroke volume of the radial piston motor optimally by appropriate control of the electric actuator.
Durch die definierte mechanische Kopplung des Aktuators bis hin zur Verstellung des Exzenters, kann für sämtliche Anordnungen die Sensierung des Schluckvolumens an sämtlichen beteiligten Bauteilen erfolgen. Auch eine Kombination aus Aktuator und Sensor in einer Einheit ist denkbar. Due to the defined mechanical coupling of the actuator to the adjustment of the eccentric, can be done for all arrangements, the sensing of the swallow volume of all components involved. A combination of actuator and sensor in a unit is conceivable.
In einer weiteren Ausgestaltungsform der Erfindung ist zwischen dem elektrischen Aktuator und dem Exzenterring der Kurbelwelle, welcher die Exzentrizität und somit das Hubvolumen bestimmt, ein selbsthemmendes Getriebe angeordnet. Somit besteht die Möglichkeit, den elektrischen Aktuator nur zur Verstellung anzusteuern und bei gleichbleibendem Hubvolumen die Kräfte, welche auf den Exzenterring der Kurbelwelle wirken, über das selbsthemmende Getriebe aufzunehmen. Als selbsthemmendes Getriebe kann beispielsweise ein Schneckengetriebe, ein Spindelgetriebe oder eine entsprechend ausgeführte schiefe Ebene verwendet werden. In a further embodiment of the invention, a self-locking gear is arranged between the electric actuator and the eccentric ring of the crankshaft, which determines the eccentricity and thus the stroke volume. Thus, there is the possibility to control the electric actuator only for adjustment and at constant stroke volume to absorb the forces acting on the eccentric ring of the crankshaft, via the self-locking gear. As a self-locking gear, for example, a worm gear, a spindle gear or a correspondingly executed inclined plane can be used.
Es besteht die Möglichkeit, den elektrischen Aktuator als Elektromotor auszubilden. Es besteht jedoch auch die Möglichkeit, einen elektrischen Linearaktor zu verwenden. It is possible to form the electric actuator as an electric motor. However, it is also possible to use an electric linear actuator.
Der elektrische Aktuator kann außerhalb der Kurbelwelle angeordnet sein. Es besteht jedoch auch die Möglichkeit, den elektrischen Aktuator direkt innerhalb der Kurbelwelle anzuordnen. The electric actuator may be arranged outside the crankshaft. However, it is also possible to arrange the electric actuator directly within the crankshaft.
In einer weiteren Ausgestaltungsform der Erfindung besteht die Möglichkeit, Fertigungstoleranzen und Verschleiß auszugleichen, indem zwischen dem Getriebe und dem Exzenterring mindestens eine Feder angeordnet ist. In a further embodiment of the invention, it is possible to compensate for manufacturing tolerances and wear by at least one spring is arranged between the gear and the eccentric ring.
In einer weiteren Ausgestaltungsform der Erfindung weist das Getriebe mindestens eine Feder auf, welche der pulsierenden hydraulischen Kraft, welche aus dem Betrieb der Radialkolbenmaschine auf die Kurbelwelle wirkt, entgegenwirkt. Dieser Lösung liegt die Erkenntnis zugrunde, dass bei einer Umdrehung der Radialkolbenmaschine sich die aus den Kolben resultierende Kraft in Richtung Exzenterverstellung ändert, wobei diese Änderung abhängig von der Anzahl der Kolben ist. Die notwendige Kraft für die Verstellung ändert sich dadurch permanent. Vorzugsweise weist die Feder ein nahezu proportionales Kraft-Wege-Verhalten auf, wodurch die pulsierende Kraft sehr gut kompensiert werden kann. In einer weiteren Ausgestaltungsform und der Verwendung eines selbsthemmenden Getriebes, besteht die Möglichkeit, den Aktuator nur dann anzusteuern, wenn die resultierende Kraft aus den Kolben in Richtung Exzenterverstellung kleiner als das Maximum vorzugsweise das Minimum dieser resultierenden Kraft ist, wodurch ein sehr kleiner Aktuator verwendet werden kann. In a further embodiment of the invention, the transmission has at least one spring, which counteracts the pulsating hydraulic force, which acts on the crankshaft from the operation of the radial piston engine. This solution is based on the finding that in one revolution of the radial piston machine, the force resulting from the piston changes in the direction of eccentric adjustment, this change being dependent on the number of pistons. The necessary force for the adjustment thus changes permanently. Preferably, the spring has a nearly proportional force-displacement behavior, whereby the pulsating force can be compensated very well. In a further embodiment and the use of a self-locking gear, it is possible to control the actuator only when the resulting force from the piston in the direction of eccentric adjustment is less than the maximum preferably the minimum of this resulting force, whereby a very small actuator can be used can.
Weitere Merkmale sind der Figurenbeschreibung zu entnehmen. Further features can be found in the description of the figures.
Es zeigen: Show it:
Fig. 1: Fig. 1:
Die Radialkolbenmaschine weist einen Kolben
Fig. 2: Fig. 2:
Die Radialkolbenmaschine weist einen Exzenterring
Fig. 3: 3:
Der elektrische Aktuator
Fig. 4: 4:
Der nichtgezeigte Aktuator wirkt mit dem Bauteil
Fig. 5: Fig. 5:
Die Verstellvorrichtung nach
Fig. 6: Fig. 6:
Weist das Bauteil
Fig. 7: Fig. 7:
Das Bauteil
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 1 1
- Kolben piston
- 2 2
- Exzenterring eccentric
- 3 3
- Kurbelwelle crankshaft
- 4 4
- elektrischer Aktuator electrical actuator
- 5 5
- Getriebe transmission
- 6 6
- Bauteil component
- 7 7
- Drehübertrager Rotary joint
- 8 8th
- feststehendes Bauteil fixed component
- 9 9
- drehendes Bauteil rotating component
- 1010
- Welle wave
- 1111
- Getriebe transmission
- 1212
- Gehäuse casing
- 1313
- Welle wave
- 1414
- Bauteil component
- 1515
- erste schiefe Ebene first inclined plane
- 1616
- zweite schiefe Ebene second inclined plane
- 1717
- Bauteil component
- 1818
- Feder feather
- 1919
- Ausgleichsbauteil balancing member
- 2020
- Feder feather
- 2121
- Bauteil component
- 2222
- Bauteil component
- 2323
- Bauteil component
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- EP 2013475 B1 [0003] EP 2013475 B1 [0003]
Claims (13)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015214837.8A DE102015214837A1 (en) | 2015-08-04 | 2015-08-04 | Hydraulic radial piston machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015214837.8A DE102015214837A1 (en) | 2015-08-04 | 2015-08-04 | Hydraulic radial piston machine |
Publications (1)
Publication Number | Publication Date |
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DE102015214837A1 true DE102015214837A1 (en) | 2017-02-09 |
Family
ID=57853492
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102015214837.8A Withdrawn DE102015214837A1 (en) | 2015-08-04 | 2015-08-04 | Hydraulic radial piston machine |
Country Status (1)
Country | Link |
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DE (1) | DE102015214837A1 (en) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2304260A1 (en) * | 1972-01-31 | 1973-08-09 | Iwaki Co Ltd | ADJUSTABLE DOSING PUMP |
DE1653579B2 (en) * | 1966-11-30 | 1975-03-27 | Nikkiso Co., Ltd., Tokio | Controlled volume pumps |
DE10030904A1 (en) * | 2000-06-23 | 2002-01-31 | Audi Ag | Variable geometry camshaft for IC engine has radially adjustable cam segment to vary valve stroke |
WO2002048548A1 (en) * | 2000-12-11 | 2002-06-20 | Seneca-Holding S.A. | Radial piston pump |
DE10139519A1 (en) * | 2001-08-10 | 2003-02-27 | Bosch Gmbh Robert | Radial piston pump for high-pressure fuel generation, and method for operating an internal combustion engine, computer program and control and / or regulating device |
DE20320710U1 (en) * | 2002-03-28 | 2005-02-10 | Battlogg, Stefan | Device for converting a rotary motion into a reciprocating motion |
EP2013475B1 (en) | 2006-04-20 | 2010-03-03 | S.A.I. Societa' Apparecchiature Idrauliche S.P.A. | Hydraulic motor having radial cylinders and continuous variable displacement |
DE102010008983A1 (en) * | 2010-02-24 | 2011-08-25 | Neumayer Tekfor Holding GmbH, 77756 | Cam for camshaft of internal combustion engines for controlling intake- and exhaust valves, has sliding surface, where section of sliding surface is changeable, and adjusting unit is provided which is component unit of cam |
-
2015
- 2015-08-04 DE DE102015214837.8A patent/DE102015214837A1/en not_active Withdrawn
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1653579B2 (en) * | 1966-11-30 | 1975-03-27 | Nikkiso Co., Ltd., Tokio | Controlled volume pumps |
DE2304260A1 (en) * | 1972-01-31 | 1973-08-09 | Iwaki Co Ltd | ADJUSTABLE DOSING PUMP |
DE10030904A1 (en) * | 2000-06-23 | 2002-01-31 | Audi Ag | Variable geometry camshaft for IC engine has radially adjustable cam segment to vary valve stroke |
WO2002048548A1 (en) * | 2000-12-11 | 2002-06-20 | Seneca-Holding S.A. | Radial piston pump |
DE10139519A1 (en) * | 2001-08-10 | 2003-02-27 | Bosch Gmbh Robert | Radial piston pump for high-pressure fuel generation, and method for operating an internal combustion engine, computer program and control and / or regulating device |
DE20320710U1 (en) * | 2002-03-28 | 2005-02-10 | Battlogg, Stefan | Device for converting a rotary motion into a reciprocating motion |
EP2013475B1 (en) | 2006-04-20 | 2010-03-03 | S.A.I. Societa' Apparecchiature Idrauliche S.P.A. | Hydraulic motor having radial cylinders and continuous variable displacement |
DE102010008983A1 (en) * | 2010-02-24 | 2011-08-25 | Neumayer Tekfor Holding GmbH, 77756 | Cam for camshaft of internal combustion engines for controlling intake- and exhaust valves, has sliding surface, where section of sliding surface is changeable, and adjusting unit is provided which is component unit of cam |
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Legal Events
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R163 | Identified publications notified | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |