EP2464867A1 - Drive device for oscillating positive-displacement machines - Google Patents

Drive device for oscillating positive-displacement machines

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Publication number
EP2464867A1
EP2464867A1 EP10740619A EP10740619A EP2464867A1 EP 2464867 A1 EP2464867 A1 EP 2464867A1 EP 10740619 A EP10740619 A EP 10740619A EP 10740619 A EP10740619 A EP 10740619A EP 2464867 A1 EP2464867 A1 EP 2464867A1
Authority
EP
European Patent Office
Prior art keywords
piston rods
eccentric shaft
engine according
pressure plate
piston
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.)
Granted
Application number
EP10740619A
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German (de)
French (fr)
Other versions
EP2464867B1 (en
Inventor
Horst Fritsch
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.)
Prominent GmbH
Original Assignee
Prominent Dosiertechnik GmbH
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Publication date
Application filed by Prominent Dosiertechnik GmbH filed Critical Prominent Dosiertechnik GmbH
Publication of EP2464867A1 publication Critical patent/EP2464867A1/en
Application granted granted Critical
Publication of EP2464867B1 publication Critical patent/EP2464867B1/en
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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
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/01—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being mechanical
    • 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
    • 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
    • F04B49/126—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 with a double eccenter mechanism

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Transmission Devices (AREA)

Abstract

The present invention relates to a drive mechanism for oscillating positive-displacement machines, such as for example diaphragm pumps, having an eccentric shaft (2) and a multiplicity m of piston rods, wherein the piston rods are connected to the eccentric shaft in such a way that a rotation of the eccentric shaft generates an oscillating linear movement of the piston rods. In order to provide a corresponding drive mechanism which eliminates or at least reduces the described disadvantages, it is proposed according to the invention that the eccentric shaft and piston rods are connected to one another by means of a sliding-block guide.

Description

ANTRIEBSVORRICHTUNG FÜR OSZILLIERENDE VERDRÄNGERMASCHINEN  DRIVE DEVICE FOR OSCILLATING DISPLACEMENT MACHINES
Die vorliegende Erfindung betrifft ein Triebwerk für oszillierende Verdrängermaschinen, wie zum Beispiel Membranpumpen, mit einer Exzenterwelle und mehreren Kolbenstangen, wobei die Kolbenstangen derart mit der Exzenterwelle in Verbindung stehen, dass eine Drehung der Exzenterwelle eine oszillierende Linearbewegung der Kolbenstangen bewirkt. The present invention relates to an engine for oscillating displacement machines, such as diaphragm pumps, with an eccentric shaft and a plurality of piston rods, wherein the piston rods are so in communication with the eccentric shaft, that rotation of the eccentric shaft causes an oscillating linear movement of the piston rods.
Oszillierend arbeitende Maschinen werden üblicherweise nach dem Prinzip des Geradschubkur- belgetriebes gebaut. Bei hohen Leistungen, oder um die oszillierenden, auf das Maschinenfundament wirkenden Massenkräfte gering zu halten, werden solche Maschinen zumeist als Mehrkurbeltriebwerk ausgeführt. Dabei sind die einzelnen Exzenter mit Pleuel- und Kolbenstangen, entweder in Reihen- oder Boxer- oder Sternform nebeneinander angeordnet und werden von einer gemeinsamen Kurbelwelle, deren Exzenter jeweils um den gleichen Winkel gegeneinander versetzt sind, angetrieben. Oscillating machines are usually built according to the principle of the Geradschubkur- geretriebes. At high power, or to keep the oscillating, acting on the machine foundation mass forces small, such machines are usually designed as a multi-crank engine. The individual eccentric with connecting rod and piston rods, either in a row or boxer or star shape are arranged side by side and are driven by a common crankshaft, the eccentric are offset by the same angle to each other.
Der Nachteil dieser Konstruktion besteht im wesentlichen darin, dass The disadvantage of this construction is essentially that
die mit mehreren nebeneinander angeordneten Exzenter ausgestattete Kurbelwelle hohen Biegemomenten ausgesetzt ist und dementsprechend kräftig dimensioniert werden muss,  equipped with several juxtaposed eccentric crankshaft exposed to high bending moments and must therefore be strongly dimensioned,
insbesondere bei der mehrheitlich ausgeführten Reihenbauweise hohe Kräfte in den Lagern zwischen Kurbelwelle und Triebwerksgehäuse auftreten, was die Kosten für das Lager in die Höhe treibt,  high forces occur in the bearings between the crankshaft and the engine housing, in particular in the case of the series construction in majority design, which increases the costs for the bearing,
ein vollständiger Massenausgleich erst bei einer Sechs-Zylindermaschine möglich ist, und  a complete mass balance is only possible with a six-cylinder engine, and
das Triebwerk insgesamt ein großes Bauvolumen, ein hohes Gewicht und hohe Herstellungskosten hat.  the engine has a large overall volume, a high weight and high production costs.
Um diese Nachteile zu beseitigen, wurden bereits Mehrzylindermaschinen entwickelt, deren KoI- benstangen alle in einer Ebene liegen und gegeneinander um gleiche Winkel versetzt sind. Angetrieben werden die Kolbenstangen von einem einzigen Exzenter, so dass die Kurbelwelle entsprechend geringere Abmessungen haben kann. Dieses Konstruktionsprinzip gibt es in zwei verschiedenen Ausführungen: a) Konstruktionen mit kraftschlüssiger Verbindung zwischen Exzenter und Kolbenstangen, bei denen die Kolbenstangen durch Rückholfedern auf die Gleitflächen des Exzenters gedrückt werden. b) Konstruktionen mit formschlüssiger Verbindung zwischen Exzenter und Kolbenstangen, bei denen die Rückholfedern durch eine, alle Kolbenstangen umschließende Rückholspange ersetzt werden. In order to eliminate these disadvantages, multi-cylinder machines have already been developed, whose piston rods are all in one plane and offset from one another by the same angle. The piston rods are driven by a single eccentric, so that the crankshaft can have correspondingly smaller dimensions. This design principle is available in two different versions: a) Constructions with non-positive connection between eccentric and piston rods, in which the piston rods are pressed by return springs on the sliding surfaces of the eccentric. b) Constructions with positive connection between eccentric and piston rods, in which the return springs are replaced by a, all piston rods enclosing return strap.
Beide Ausführungsformen haben Nachteile. So addiert sich bei der Verwendung einer Rückhol- feder deren Kraft sich zur Stangenkraft und führt zu einer zusätzlichen Belastung der Bauteile. Wird die Feder zu schwach dimensioniert, kann der angeschlossene Kolben stecken bleiben, so dass der Saughub nicht oder nicht vollständig ausgeführt wird. Both embodiments have disadvantages. When a return spring is used, its force is added to the rod force and results in an additional load on the components. If the spring is dimensioned too weak, the connected piston may get stuck, so that the suction stroke is not or not completely executed.
Die alternativ eingesetzte, alle Kolbenstangen umfassende Rückholspange ist, vor allem bei gro- ßen Maschinen, ein teures Bauteil und bedingt zudem ein großes Bauvolumen des gesamten Exzenter-Triebwerks. The alternatively used, all piston rods comprehensive Rückholspange is, especially with large machines, an expensive component and also requires a large volume of construction of the entire eccentric engine.
Die DE 85 21 520 beschreibt eine Mehrzylindermembranpumpe mit mehreren Membranpumpenköpfen, die jeweils eine durch einen Hydraulikkolben betätigbare Membran aufweisen. Hier er- folgt der Pumpenantrieb über eine Pleuel-Exzenter-Einrichtung. Die Pleuelstange ist sowohl mit dem Kolben bzw. der Kolbenstange als auch mit der Exzenterwelle drehbar gekoppelt, wodurch das Triebwerk aufwendig in der Herstellung ist. DE 85 21 520 describes a multi-cylinder diaphragm pump with a plurality of diaphragm pump heads, each having an actuatable by a hydraulic piston diaphragm. Here, the pump drive takes place via a connecting rod eccentric device. The connecting rod is rotatably coupled to both the piston and the piston rod and the eccentric shaft, whereby the engine is expensive to manufacture.
Die US-5,368,451 beschreibt eine entsprechende Vorrichtung mit drei Hydraulikzylindern, bei denen die Kolbenstange mit Hilfe einer Rückholfeder auf die Exzenterfläche gedrückt wird. US-5,368,451 describes a corresponding device with three hydraulic cylinders, in which the piston rod is pressed by means of a return spring on the eccentric surface.
Auch die DE 196 26 938 A1 beschreibt eine sternförmige Kolben-Zylinder-Anordnung, bei der die Welle von radial ausgerichteten Zylindern umgeben ist, in denen verschiebbare Kolben angeordnet sind, die durch Pleuelstangen über einen Exzenter mit der Welle verbunden sind. Also DE 196 26 938 A1 describes a star-shaped piston-cylinder arrangement in which the shaft is surrounded by radially aligned cylinders in which displaceable pistons are arranged, which are connected by connecting rods via an eccentric with the shaft.
Ausgehend von dem beschriebenen Stand der Technik ist es Aufgabe der vorliegenden Erfindung, ein entsprechendes Triebwerk zur Verfügung zu stellen, das die beschriebenen Nachteile vermeidet oder zumindest reduziert. Erfindungsgemäß wird diese Aufgabe dadurch gelöst, dass Exzenterwelle und Kolbenstange über eine Kulissenführung miteinander verbunden sind. Eine Kulissenführung besteht aus einer Kulisse, welche einen Schlitz, einen Steg oder eine Nut aufweist, und einem entsprechend ausgebildeten Kulissenstein, welcher durch die Kulisse zwangsgeführt wird. Durch die Verwendung einer Kulissenführung kann auf Pleuelstangen verzichtet werden, was die Kosten des Triebwerks reduziert und zugleich ermöglicht, dass zum Beispiel eine mit solch einem Triebwerk ausgestattete Membranpumpe kleiner hergestellt werden kann, da nun die in den Do- sierzylindem geführte Kolben direkt mit der Exzenterwelle gekoppelt werden können, ohne dass eine Pleuelstange benötigt wird. Starting from the described prior art, it is an object of the present invention to provide a corresponding engine which avoids or at least reduces the disadvantages described. According to the invention, this object is achieved in that eccentric shaft and piston rod are connected to each other via a slotted guide. A slotted guide consists of a backdrop, which has a slot, a web or a groove, and a correspondingly formed sliding block, which is forcibly guided by the backdrop. By using a slotted guide can be dispensed with connecting rods, which reduces the cost of the engine and at the same time allows, for example, a diaphragm pump equipped with such an engine can be made smaller, since now the piston guided in the metering cylinder directly with the eccentric shaft can be coupled without a connecting rod is required.
In einer bevorzugten Ausführungsform liegen alle Kolbenstangen in einer Ebene, wobei besonders bevorzugt die Kolbenstangen sternförmig angeordnet sind. Unter sternförmig im Sinne der vorliegenden Anmeldung wird verstanden, dass die Kolbenstangen in Umfangsrichtung der Exzenterwelle voneinander gleich beabstandet sind. Mit anderen Worten, schließen benachbarte Kolbenstangen in einer Projektion auf einer Ebene senkrecht zur Exzenterwelle jeweils den gleichen Winkel ein. In einer weiteren bevorzugten Ausführungsform ist vorgesehen, dass die Kulissenführung derart ausgebildet ist, dass Exzenterwelle und Kolbenstangen in einer ersten Raumrichtung, vorzugsweise auch in einer zweiten, hierzu senkrecht angeordneten Raumrichtung formschlüssig miteinander verbunden sind, während eine Relativbewegung in einer dritten Raumrichtung, die senkrecht zur ersten und zur zweiten Raumrichtung angeordnet ist, möglich ist. In a preferred embodiment, all the piston rods lie in one plane, wherein the piston rods are particularly preferably arranged in a star shape. Under star-shaped in the context of the present application, it is understood that the piston rods are equally spaced from each other in the circumferential direction of the eccentric shaft. In other words, adjoining adjacent piston rods in a projection on a plane perpendicular to the eccentric shaft in each case the same angle. In a further preferred embodiment, it is provided that the slotted guide is designed such that eccentric shaft and piston rods are positively connected to each other in a first spatial direction, preferably in a second direction perpendicular thereto spatial direction, while a relative movement in a third spatial direction perpendicular to is arranged first and second spatial direction is possible.
Beispielsweise kann die Kulisse als T-Nut und der Kulissenstein als entsprechend angepasster Nutenstein ausgebildet sein. Dabei hat es sich gezeigt, dass die Kulisse vorzugsweise an der Kolbenstange angeordnet ist und die Kulissensteine vorzugsweise an der Exzenterwelle befestigt sind. For example, the backdrop may be formed as a T-slot and the sliding block as a correspondingly adapted sliding block. It has been shown that the link is preferably arranged on the piston rod and the sliding blocks are preferably attached to the eccentric shaft.
Beispielsweise kann die Exzenterwelle mit einem Kulissenelement (z. B. drehbeweglich) verbunden sein, welches die Kulissen oder die Kulissensteine aufweist, wobei die Kulissen oder die Kulissensteine auf den Begrenzungsflächen eines regelmäßigen Vielecks mit n Ecken liegen. Dabei ist vorzugsweise n ein ganzzahliges Vielfaches von m. Am besten wird n = m gewählt. For example, the eccentric shaft may be connected to a link element (eg rotatable), which has the slotted links or the sliding blocks, the slotted links or the sliding blocks lying on the boundary surfaces of a regular polygon with n corners. In this case, n is preferably an integer multiple of m. The best choice is n = m.
Weiterhin hat sich gezeigt, dass die Kulisse vorzugsweise aus gehärtetem Stahl hergestellt ist. Der Kulissenstein wird am besten aus einer Kupferlegierung, vorzugsweise aus Bronze hergestellt, um eine möglichst reibungsarme Bewegung des Kulissensteins in der Kulisse zu ermögli- chen. Furthermore, it has been shown that the backdrop is preferably made of hardened steel. The sliding block is best made of a copper alloy, preferably made of bronze, in order to allow the lowest possible movement of the sliding block in the backdrop.
Durch das erfindungsgemäße Mehrkolbentriebwerk werden die eingangs erwähnten Nachteile dadurch beseitigt, dass die Kolbenkräfte sowohl für den Druckhub als auch für den Saughub di- - A - rekt von der Exzenterkulisse, die drehbeweglich mit der Exzenterwelle verbunden ist, auf die einzelnen Kolbenstangen übertragen werden, wodurch zusätzliche Bauteile, wie zum Beispiel eine teure Rückzugsstange oder Pleuelstangen, entfallen und so die Baugröße des gesamten Triebwerks deutlich reduziert werden kann. By the multi-piston engine according to the invention, the disadvantages mentioned above are eliminated in that the piston forces for both the pressure stroke and the suction stroke di-. - A - rectly from the eccentric link, which is rotatably connected to the eccentric shaft are transmitted to the individual piston rods, which additional components, such as an expensive retraction rod or connecting rods, accounts and so the size of the entire engine can be significantly reduced.
Weitere Vorteile, Merkmale und Anwendungsmöglichkeiten werden deutlich anhand der folgenden Beschreibung bevorzugter Ausführungsformen sowie der zugehörigen Figuren. Es zeigen: Further advantages, features and possible applications will become apparent from the following description of preferred embodiments and the accompanying figures. Show it:
Figur 1 eine erste Ausführungsform eines Exzenterkulissen-Triebwerks gemäß der Figure 1 shows a first embodiment of a Exzenterkulissen engine according to the
Erfindung in einer Schnittansicht,  Invention in a sectional view,
Figur 2 eine weitere Schnittansicht senkrecht zur in Figur 1 gezeigten Ansicht, FIG. 2 shows a further sectional view perpendicular to the view shown in FIG. 1,
Figuren 3a - c drei Ausführungsvarianten des erfindungsgemäßen Triebwerks, und FIGS. 3a-c show three variants of the engine according to the invention, and FIGS
Figuren 4a+b und 5 a+b verschiedene Ausführungsformen der Verbindung zwischen Kolbenstange und Kulissenelement. Figures 4a + b and 5 a + b different embodiments of the connection between the piston rod and link element.
Bei der in den Figuren 1 und 2 gezeigten Ausführungsform dient das Triebwerk zum Antrieb einer Drei-Zylindermaschine. Das Triebwerk weist somit drei Kolbenstangen 1 auf, die in einer Ebene liegen und um 120° gegeneinander versetzt angeordnet sind. Die Exzenterwelle 2 ist drehbeweglich mit einer Exzenterkulisse verbunden. Wird die Exzenterwelle um die Achse 12 gedreht, so wird sich der Mittelpunkt 1 1 der Exzenterkulisse auf dem mit der Bezugszahl 13 versehenen Kreis bewegen. Mit anderen Worten führt die Exzenterkulisse eine translatorische Kreisbewegung durch. Das Kulissenelement 6 ist vorzugsweise dreiecksförmig ausgebildet, wobei auf den drei Seiten des Dreiecks die Kulissen- bzw. Nutensteine angeordnet sind, die Gleitflächen 8 aufweisen. Die Kolbenstangen 1 weisen entsprechende Gleitschuhe 5 auf, die als Kulisse dienen. Wie insbesondere in Figur 1 zu erkennen ist, umgreift der Gleitschuh 5 die Kulissensteine des Kulissenelements 6, so dass die Gleitflächen 8 der Kulissensteine an den Gleitflächen 7 der Kulisse anliegen. Die Kulissensteine des Kulissenelements 6 werden somit formschlüssig von dem Gleitschuh 5 umgriffen. Bei einer Drehung der Welle 2 werden die Gleitschuhe 5 entlang der Gleitflächen 8 der Kulissensteine gleiten. Durch diese Konstruktion werden nahezu keine Quer- kräfte von der Exzenterwelle auf die Kolbenstangen 1 aufgebracht. In the embodiment shown in Figures 1 and 2, the engine is used to drive a three-cylinder engine. The engine thus has three piston rods 1, which lie in a plane and are offset by 120 ° from each other. The eccentric shaft 2 is rotatably connected to a Exzenterkulisse. If the eccentric shaft is rotated about the axis 12, the center point 1 1 of the eccentric cam will move on the circle provided with the reference numeral 13. In other words, the eccentric cam performs a translatory circular motion. The link element 6 is preferably triangular in shape, wherein on the three sides of the triangle, the sliding blocks or sliding blocks are arranged, the sliding surfaces 8 have. The piston rods 1 have corresponding sliding shoes 5, which serve as a backdrop. As can be seen in particular in Figure 1, the slide shoe 5 surrounds the sliding blocks of the link element 6, so that the sliding surfaces 8 of the sliding blocks bear against the sliding surfaces 7 of the backdrop. The sliding blocks of the link element 6 are thus positively embraced by the shoe 5. Upon rotation of the shaft 2, the sliding blocks 5 will slide along the sliding surfaces 8 of the sliding blocks. As a result of this construction, almost no transverse forces are applied by the eccentric shaft to the piston rods 1.
Man erkennt deutlich den außergewöhnlich kompakten Aufbau des Triebwerks. It clearly shows the exceptionally compact design of the engine.
In den Figuren 3a bis 3c sind drei unterschiedliche Ausführungsformen der Erfindung gezeigt. In Figur 3a ist ein Zwei-Zylinder-Antrieb gezeigt. Das Triebwerk weist daher lediglich zwei Kolbenstangen 1 auf. Das Kulissenelement 6' hat hier eine rechteckige Form, wobei lediglich an zwei gegenüberliegenden Seiten des Rechtecks entsprechende mit Gleitflächen versehene Kulissensteine angeordnet sind, die von den Gleitschuhen 5 der Kolbenstangen 1 umgriffen werden. Bei einer Drehung der Welle wird sich der Mittelpunkt 1 1 des Kulissenelements 6' entlang des Kreises 13 bewegen. Three different embodiments of the invention are shown in FIGS. 3a to 3c. FIG. 3 a shows a two-cylinder drive. The engine therefore has only two piston rods 1. The link element 6 'here has a rectangular shape, with corresponding sliding surfaces provided with sliding surfaces are arranged only on two opposite sides of the rectangle, which are encompassed by the shoes 5 of the piston rods 1. at a rotation of the shaft, the center 1 1 of the link element 6 'will move along the circle 13.
Figur 3b zeigt die aus den Figuren 1 und 2 bereits bekannte Ausführungsform mit drei Zylindern. Figure 3b shows the already known from Figures 1 and 2 embodiment with three cylinders.
In Figur 3c ist ein Vier-Zylinder-Antrieb gezeigt. Das Kulissenelement 6" ist dem Kulissenelement 6' der Ausführungsform von Figur 3a ähnlich, wobei hier jedoch an allen vier Seiten des quadratischen Kulissenelements 6" entsprechende Gleitflächen 11 tragende Kulissensteine angeordnet sind, die jeweils von einem Gleitschuh 5 einer der vier Kolbenstangen 1 umgriffen werden. FIG. 3c shows a four-cylinder drive. The gate element 6 "is similar to the gate element 6 'of the embodiment of Figure 3a, but here on all four sides of the square gate element 6" corresponding sliding surfaces 11 supporting sliding blocks are arranged, which are each embraced by a shoe 5 of the four piston rods 1.
In den Figuren 4 und 5 sind spezielle Ausführungsformen der Gleitschuhe 5 gezeigt. In Figures 4 and 5, specific embodiments of the sliding blocks 5 are shown.
Die Figuren 4a und 4b zeigen eine vergrößerte Darstellung der Kulissenführung. Die Kolbenstangen 1 weisen an ihrem Ende eine Druckplatte 5' auf, welche zusammen mit den Rückholklauen 14 den Gleitschuh bilden. Die Rückholklauen 14 sind mit Hilfe einer Schraube an der Druckplatte 5' befestigt. In der in Figur 4a gezeigten Ausführungsform wird die Rückholklaue 14 stirnseitig auf die Druckplatte 5' aufgeschraubt. Figures 4a and 4b show an enlarged view of the slotted guide. The piston rods 1 have at their end a pressure plate 5 ', which together with the Rückholklauen 14 form the shoe. The return claws 14 are fastened by means of a screw to the pressure plate 5 '. In the embodiment shown in FIG. 4a, the return claw 14 is screwed onto the pressure plate 5 'at the end.
Bei der in Figur 4b gezeigten Ausführungsform ist die Rückholklaue 14 U-förmig ausgebildet, so dass sie sowohl den Kulissenstein als auch die Druckplatte 5' umgreift. Zur Befestigung wird die Rückholklaue 14 dann von hinten, d. h. von der dem Kulissenstein abgewandten Seite der Druckplatte 5' mit dieser verschraubt. In the embodiment shown in Figure 4b, the return pawl 14 is U-shaped, so that it surrounds both the sliding block and the pressure plate 5 '. For attachment, the return claw 14 is then from behind, d. H. from the side facing away from the sliding block of the pressure plate 5 'screwed with this.
In den Figuren 5a und 5b sind Ausführungsformen gezeigt, bei denen die Rückholklauen 14 an den umlaufenden Kanten der Druckplatte 5' angeschraubt sind. Im Falle der Ausführungsform von Figur 5b sind beide Rückholklauen 5' mit Hilfe eines Bolzen und entsprechender Passschrauben 15 miteinander verbunden. In the figures 5a and 5b embodiments are shown in which the return pawls 14 are screwed to the peripheral edges of the pressure plate 5 '. In the case of the embodiment of FIG. 5 b, both return claws 5 'are connected to one another with the aid of a bolt and corresponding fitting screws 15.
Bezugszeichenliste LIST OF REFERENCE NUMBERS
1 Kolbenstangen  1 piston rods
2 Exzenterwelle  2 eccentric shaft
5 Gleitschuh  5 shoe
5' Gleitschuh-Druckplatte  5 'shoe pressure plate
6.6', 6" Kulissenelement  6.6 ', 6 "gate element
7 Gleitflächen der Kulisse  7 sliding surfaces of the backdrop
8 Gleitflächen der Kulissensteine 8 sliding surfaces of the sliding blocks
10 Kreis 10 circle
1 1 Mittelpunkt des Kulissenelements 1 1 center point of the gate element
12 Achse der Exzenterwelle12 axis of the eccentric shaft
13 Kreis 13 circle
14 Rückholklaue  14 return claw
15 Bolzen/Passschraube  15 bolt / fitting screw

Claims

P a t e n t a n s p r ü c h e Patent claims
1. Triebwerk für oszillierende Verdrängermaschinen, wie z.B. Membranpumpen, mit einer Exzenterwelle (2) und einer Mehrzahl m von Kolbenstangen, wobei die Kolbenstangen derart mit der Exzenterwelle in Verbindung stehen, dass eine Drehung der Exzenterwelle eine oszillierende Linearbewegung der Kolbenstangen bewirkt, dadurch gekennzeichnet, dass Exzenterwelle und Kolbenstange über eine Kulissenführung miteinander verbunden sind. 1. engine for oscillating displacement machines, such. Diaphragm pumps, with an eccentric shaft (2) and a plurality m of piston rods, the piston rods are so in communication with the eccentric shaft, that rotation of the eccentric shaft causes an oscillating linear movement of the piston rods, characterized in that the eccentric shaft and piston rod connected to each other via a slotted guide are.
2. Triebwerk nach Anspruch 1 , dadurch gekennzeichnet, dass alle Kolbenstangen in einer Ebene liegen. 2. Engine according to claim 1, characterized in that all the piston rods lie in one plane.
3. Triebwerk nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Kolbenstangen sternförmig angeordnet sind. 3. Engine according to claim 1 or 2, characterized in that the piston rods are arranged in a star shape.
4. Triebwerk nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass Exzenterwelle und Kolbenstangen in einer ersten Raumrichtung, vorzugweise auch in einer zweiten hierzu senkrecht angeordneten Raumrichtung formschlüssig miteinander verbunden sind, während eine Relativbewegung in einer dritten Raumrichtung, die senkrecht zur ers- ten und zur zweiten Raumrichtung angeordnet ist, möglich ist. 4. Engine according to one of claims 1 to 3, characterized in that the eccentric shaft and piston rods are positively connected to each other in a first spatial direction, preferably in a second direction perpendicular thereto spatial direction, while a relative movement in a third spatial direction perpendicular to the first th and the second spatial direction is arranged is possible.
5. Triebwerk nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Kulissenführung als T-Nut/Nutenstein-Verbindung ausgebildet ist, wobei vorzugweise Kolbenstangen die T-Nut aufweisen und die Nutensteine an der Exzenterwelle befestigt sind. 5. Engine according to one of claims 1 to 4, characterized in that the slotted guide is designed as a T-slot / Nutenstein connection, preferably piston rods have the T-slot and the sliding blocks are attached to the eccentric shaft.
6. Triebwerk nach Anspruch 5, dadurch gekennzeichnet, dass die Exzenterwelle ein Kulissenelement hat, welches die T-Nuten oder die Nutensteine aufweist, wobei T-Nuten oder Nutensteine auf den Kanten eines regelmäßigen Vielecks mit n Ecken liegen. 6. Engine according to claim 5, characterized in that the eccentric shaft has a link element, which has the T-slots or the sliding blocks, wherein T-slots or sliding blocks lie on the edges of a regular polygon with n corners.
7. Triebwerk nach Anspruch 6, dadurch gekennzeichnet, dass n ein ganzzahliges Vielfache von m ist, wobei vorzugsweise n gleich m ist. 7. engine according to claim 6, characterized in that n is an integer multiple of m, wherein preferably n is equal to m.
8. Triebwerk nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die T-Nut aus gehärtetem Stahl hergestellt ist. 8. Engine according to one of claims 1 to 7, characterized in that the T-groove is made of hardened steel.
9. Triebwerk nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass der Nutenstein aus einer Kupfer-Legierung, vorzugsweise aus Bronze hergestellt ist. 9. Engine according to one of claims 1 to 8, characterized in that the sliding block is made of a copper alloy, preferably made of bronze.
10. Triebwerk nach einem der Ansprüche 5 bis 9, dadurch gekennzeichnet, dass die T-Nut durch eine Druckplatte und eine Rückholklauen, die an der Druckplatte befestigt sind, gebildet wird. 10. Engine according to one of claims 5 to 9, characterized in that the T-groove is formed by a pressure plate and a return claws which are fixed to the pressure plate.
11. Triebwerk nach Anspruch 10, dadurch gekennzeichnet, dass die Rückholklauen mit der Druckplatte der Kolbenstange mittels eines Bolzens oder einer Passschraube verbunden ist, wobei die Rückholklaue vorzugsweise drehbeweglich mit der Druckplatte verbunden ist. 11. Engine according to claim 10, characterized in that the return pawls is connected to the pressure plate of the piston rod by means of a bolt or a dowel screw, wherein the return pawl is preferably rotatably connected to the pressure plate.
EP10740619.1A 2009-08-11 2010-08-03 Drive device for an oscillating displacmenet machine Active EP2464867B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009037123 2009-08-11
PCT/EP2010/061303 WO2011018393A1 (en) 2009-08-11 2010-08-03 Drive device for oscillating positive-displacement machines

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EP2464867A1 true EP2464867A1 (en) 2012-06-20
EP2464867B1 EP2464867B1 (en) 2014-09-03

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EP (1) EP2464867B1 (en)
JP (1) JP2013501881A (en)
CN (1) CN102472262A (en)
BR (1) BR112012003106A8 (en)
CA (1) CA2762274A1 (en)
ES (1) ES2523271T3 (en)
MY (1) MY160348A (en)
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EP2464867B1 (en) 2014-09-03
CA2762274A1 (en) 2011-02-17
JP2013501881A (en) 2013-01-17
BR112012003106A2 (en) 2016-02-23
US20120097025A1 (en) 2012-04-26
MY160348A (en) 2017-02-28
CN102472262A (en) 2012-05-23
RU2012104760A (en) 2013-09-20
BR112012003106A8 (en) 2017-12-05
ES2523271T3 (en) 2014-11-24
WO2011018393A1 (en) 2011-02-17

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