EP0632200B1 - Drive mechanism for swash plate machine - Google Patents

Drive mechanism for swash plate machine Download PDF

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Publication number
EP0632200B1
EP0632200B1 EP94109453A EP94109453A EP0632200B1 EP 0632200 B1 EP0632200 B1 EP 0632200B1 EP 94109453 A EP94109453 A EP 94109453A EP 94109453 A EP94109453 A EP 94109453A EP 0632200 B1 EP0632200 B1 EP 0632200B1
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EP
European Patent Office
Prior art keywords
swash plate
drive shaft
shaft
bearing part
side walls
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Expired - Lifetime
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EP94109453A
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German (de)
French (fr)
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EP0632200A1 (en
Inventor
Thomas Heng
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KSB AG
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KSB AG
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C9/00Oscillating-piston machines or pumps
    • F04C9/005Oscillating-piston machines or pumps the piston oscillating in the space, e.g. around a fixed point

Definitions

  • the invention relates to a drive device for a swash plate machine, in which a swash plate is in section contact with the side walls of a conveying space and bears sealingly against the latter, so that independent conveying chambers are formed, and in which the swash plate has a swash plate shaft inclined to a drive shaft by one Wobble point is moved.
  • a swashplate machine works according to the following principle.
  • a swash plate shaft describing a cone about the central axis of the drive shaft, is moved. Due to the inclined position of the swash plate shaft with respect to the center axis of the drive shaft, a swash plate standing perpendicular to the swash plate shaft executes a wobble movement around a wobble point lying on the center axis of the drive shaft.
  • a separating web penetrating the swash plate and extending in the axial direction of the drive shaft divides the delivery chamber into a suction-side and a pressure-side part. Due to the swash plate moving along the side walls of the delivery chamber, two rotating delivery chambers with variable volume are created within the delivery room. The swashplate ideally abuts the side walls of the delivery chamber piece by piece.
  • a swash plate pump in which the swash plate is arranged in a delivery chamber, the housing wall surfaces of which are opposite to the swash plate and are conical.
  • the plane of the delivery chamber runs perpendicular to the drive shaft plane. Due to the swash plate arranged obliquely in the conveying space, the conveying chambers of variable volume are formed on both sides of the swash plate.
  • the swash plate moving in the delivery chamber is designed as a circular ring which is arranged with its inner diameter on a spherical surface of a swash plate hub. This spherical surface is mounted in correspondingly shaped counter surfaces of the pump housing enclosing the delivery chamber.
  • the swash plate shaft is supported in a rotor connected to the drive shaft.
  • the rotor is provided with an eccentric bore lying obliquely to the central axis of the drive shaft, in which two ball bearings are arranged which rest with their outer races on the wall of the bore and which guide one end of the swash plate shaft.
  • the end of the swashplate shaft describes a circle around the central axis of the drive shaft and the swashplate wobbles around the wobble point.
  • the drive axis is formed with an inclined section which describes a uniform double cone when the drive shaft rotates.
  • the center of the double cone is the wobble point.
  • a hub is supported by needle bearings on the inclined section to which the swash plate is connected.
  • the spring element Due to its flexibility, the spring element allows for the compensation of dimensional deviations and the rolling over of small foreign bodies without high forces or tension occurring.
  • a radially movable bearing part for storing the Swashplate shaft provided in the drive shaft, wherein the bearing part is deflected radially by a spring element arranged substantially perpendicular to the drive shaft.
  • the object of the invention is therefore to bring the swash plate into contact with the side walls of the delivery chamber in such a way that a good system is obtained and maintained during operation of the swash plate machine, so that the gap losses are small and tension is avoided.
  • the guidance of the bearing part is achieved in that the bearing part cooperates on its sides opposite the side walls at the end of the drive shaft and one or both side walls via a connection with a groove and a bolt extending essentially in a direction perpendicular to the central axis of the swash plate shaft, as described in the characterizing part of claim 1.
  • the form-fitting connection is made from the groove and bolt, whereby it does not matter which component is provided with the groove and which is provided with the bolt. So the bearing part can also be rotated about the central axis of the bolts.
  • the invention can also be advantageous in the event of wobble disc pumps can be used.
  • a swash plate pump in which a swash plate shaft 1 is moved about a swash point 3 by a drive shaft 2, describing a double-conical surface.
  • the wobble point 3 coincides with the center of the spherical surface 4 of the swash plate hub 5 and the spherical inner surface 6 of a ring 7.
  • These surfaces, together with conical side walls 8, 9 of a first, drive-side side part 10 having a central opening and a second side part 11 delimit a conveying chamber 12.
  • the central opening in the first side part 10 on the drive side serves for the implementation of the swash plate shaft 1.
  • the swash plate shaft 1 can be in different ways, e.g. Welding, screwing or the like, be connected to the swash plate hub 5.
  • the swash plate hub 5 can be made in one piece to achieve the greatest possible precision. Of course, a construction composed of several parts is also possible.
  • the outer edge of the swash plate 13 is preferably designed with a contour corresponding to the spherical inner surface 6 in order to achieve a dynamic seal.
  • the delivery chamber 12 is sealed against the interior of the pump by dynamic sealing between the spherical surface 4 and the corresponding spherical surfaces 14, 15 of the side parts 10, 11.
  • the swash plate hub 5 can also be supported at these points.
  • One end of the swash plate shaft 1 is guided in a bearing part 16 arranged at the end of the drive shaft 2 by means of a bearing.
  • 2 and 3 show an enlarged section of the drive train.
  • the outer race 17a of the bearing is located in the bearing part 16, the inner race 17b on the swash plate shaft 1.
  • the bearing part 16 is guided laterally and can be moved in the radial direction in the manner of a slide. In order to transmit the torque, the bearing part 16 is supported laterally against side walls 2a, 2b of the drive shaft 2.
  • the bearing part 16 is flattened on the contact surface of the spring element 18.
  • the spring element 18 is arranged perpendicular to the swash plate shaft 1 in the exemplary embodiment, but is not limited to this arrangement. Since the drive torque transversely to the direction of action of the spring element 18 on that held in the drive shaft 2 Bearing part 16 is transmitted, high drive torques can be transmitted.
  • the bearing part 16 is arranged substantially perpendicular to the central axis of the swash plate shaft 1. If the inclined position of the swashplate shaft changes around the wobble point 3, it is necessary for the drive train to be in a tension-free state that the position of the bearing part 16 changes.
  • the use of a roller bearing for guiding the swash plate shaft 1 in the bearing part 16 permits compensation in the axial direction of the swash plate shaft 1.
  • the bearing part 16 is provided on a side opposite the side walls 2a, 2b in each case with a groove 31 into which a bolt 32 arranged in the side walls 2a, 2b engages and serves as a pivot bearing.
  • the bolt 32 is inserted from the inside into the side walls 2a, 2b and has a head part widened in relation to a shaft.
  • the bearing part 16 When the bearing part 16 is mounted, the loosely inserted bolt 32 is secured. An additional screw connection is not necessary.
  • the bearing part 16 With the bolts 32, the bearing part 16 has two degrees of freedom of movement.
  • the groove 31 has the shape of an L, one leg of which opens towards the drive shaft.
  • the rotation of the drive shaft 2 leads the end of the swash plate shaft 1, which is supported in the bearing part 16, on a circular path around the central axis of the drive shaft 2.
  • the swash plate shaft 1 tumbles around the swash point 3 without rotating itself about its own central axis and describes the outer surface of a double cone , whose common tip is at wobble point 3.
  • Rolling over a foreign body causes the following:
  • the swash plate 5 lifts off one of the side walls 8, 9, whereby the inclined position of the swash plate shaft 1 is reduced.
  • the reduction in the inclined position reduces the radial deflection of the end of the swash plate shaft 1 guided in the bearing part 16 and the bearing part 16 is pressed against the spring force of the spring element 18 toward the support wall 2c. Even minor mechanical deviations of the components themselves are compensated for without tension.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Description

Die Erfindung betrifft eine Antriebsvorrichtung für eine Taumelscheibenmaschine, bei der eine Taumelscheibe in abschnittsweiser Berührung mit den Seitenwänden eines Förderraumes ist und dichtend an diesen anliegt, so daß voneinander unabhängige Förderkammern entstehen, und bei der die Taumelscheibe über eine schräg zu einer Antriebswelle stehende Taumelscheibenwelle um einen Taumelpunkt bewegt wird.The invention relates to a drive device for a swash plate machine, in which a swash plate is in section contact with the side walls of a conveying space and bears sealingly against the latter, so that independent conveying chambers are formed, and in which the swash plate has a swash plate shaft inclined to a drive shaft by one Wobble point is moved.

Eine Taumelscheibenmaschine funktioniert nach folgendem Prinzip. Dreht sich eine Antriebswelle, so wird eine Taumelscheibenwelle, einen Kegel um die Mittelachse der Antriebswelle beschreibend, bewegt. Durch die Schräglage der Taumelscheibenwelle bezüglich der Mittelachse der Antriebswelle führt eine senkrecht zu der Taumelscheibenwelle stehende Taumelscheibe in einem sie aufnehmenden Förderraum eine Taumelbewegung um einen auf der Mittelachse der Antriebswelle liegenden Taumelpunkt aus. Eine die Taumelscheibe durchdringender, sich in Achsrichtung der Antriebswelle erstreckender Trennsteg teilt den Förderraum in einen saugseitigen und einen druckseitigen Teil auf. Durch die sich an den Seitenwänden des Förderraumes entlang bewegende Taumelscheibe entstehen innerhalb des Förderraumes zwei umlaufende, in ihrem Volumen veränderliche Förderkammern. Die Taumelscheibe liegt idealerweise an den Seitenwänden des Förderraumes stückweise an.A swashplate machine works according to the following principle. When a drive shaft rotates, a swash plate shaft, describing a cone about the central axis of the drive shaft, is moved. Due to the inclined position of the swash plate shaft with respect to the center axis of the drive shaft, a swash plate standing perpendicular to the swash plate shaft executes a wobble movement around a wobble point lying on the center axis of the drive shaft. A separating web penetrating the swash plate and extending in the axial direction of the drive shaft divides the delivery chamber into a suction-side and a pressure-side part. Due to the swash plate moving along the side walls of the delivery chamber, two rotating delivery chambers with variable volume are created within the delivery room. The swashplate ideally abuts the side walls of the delivery chamber piece by piece.

Stand der TechnikState of the art

Aus der DE-AS 1 090 966 ist eine Taumelscheibenpumpe bekannt, bei der die Taumelscheibe in einem Förderraum angeordnet ist, deren der Taumelscheibe gegenüberliegende Gehäusewandflächen kegelig ausgebildet sind. Die Ebene des Förderraumes verläuft senkrecht zur Antriebswellenebene. Durch die schräg in dem Förderraum angeordnete Taumelscheibe werden beiderseits der Taumelscheibe die Förderkammern veränderlichen Volumens gebildet. Die sich in dem Förderraum bewegende Taumelscheibe ist als Kreisring ausgebildet, der mit seinem inneren Durchmesser auf einer Kugelfläche einer Taumelscheibennabe angeordnet ist. Diese Kugelfläche ist in entsprechend geformten Gegenflächen des den Förderraum einschließenden Pumpengehäuses gelagert.From DE-AS 1 090 966 a swash plate pump is known, in which the swash plate is arranged in a delivery chamber, the housing wall surfaces of which are opposite to the swash plate and are conical. The plane of the delivery chamber runs perpendicular to the drive shaft plane. Due to the swash plate arranged obliquely in the conveying space, the conveying chambers of variable volume are formed on both sides of the swash plate. The swash plate moving in the delivery chamber is designed as a circular ring which is arranged with its inner diameter on a spherical surface of a swash plate hub. This spherical surface is mounted in correspondingly shaped counter surfaces of the pump housing enclosing the delivery chamber.

Die Taumelscheibenwelle wird in einem mit der Antriebswelle verbundenen Rotor gelagert. Dazu ist der Rotor mit einer zur Mittelachse der Antriebswelle schräg liegenden, exzentrischen Bohrung versehen, in welcher zwei Kugellager, die mit ihren Außenlaufringen an der Wand der Bohrung anliegen und das eine Ende der Taumelscheibenwelle führen, angeordnet sind. Dreht sich der Rotor, so beschreibt das Ende der Taumelscheibenwelle einen Kreis um die Mittelachse der Antriebswelle und die Taumelscheibe führt eine Taumelbewegung um den Taumelpunkt aus.The swash plate shaft is supported in a rotor connected to the drive shaft. For this purpose, the rotor is provided with an eccentric bore lying obliquely to the central axis of the drive shaft, in which two ball bearings are arranged which rest with their outer races on the wall of the bore and which guide one end of the swash plate shaft. When the rotor rotates, the end of the swashplate shaft describes a circle around the central axis of the drive shaft and the swashplate wobbles around the wobble point.

Eine weitere Antriebsvorrichtung wird in der DE-PS 12 77 673 beschrieben. Um die Taumelbewegung zu erzielen, ist die Antriebsachse mit einem schräg gestellten Abschnitt ausgebildet, der bei der Rotation der Antriebswelle einen gleichmäßigen Doppelkegel beschreibt. Das Zentrum des Doppelkegels ist der Taumelpunkt. Über Nadellager stützt sich eine Nabe auf dem schräg gestellten Abschnitt ab, mit welcher die Taumelscheibe verbunden ist.Another drive device is described in DE-PS 12 77 673. In order to achieve the wobble movement, the drive axis is formed with an inclined section which describes a uniform double cone when the drive shaft rotates. The center of the double cone is the wobble point. A hub is supported by needle bearings on the inclined section to which the swash plate is connected.

Bei beiden Konstruktionen besteht eine Schwierigkeit darin, die Taumelscheibenwelle so zu führen, daß die Taumelscheibe während des gesamten Umlaufs möglichst gut an den Seitenwänden des Förderraumes anliegt, da die Taumelscheibe bei geringsten Abweichungen von dem berechneten Idealmaß, beispielsweise wegen Ungenauigkeiten der Wandflächen, Verzug der Bauteile durch Wärmedehnung oder durch Überrollen von Fremdkörpern nicht in der vorgesehenen Schräglage steht. Dadurch wird entweder die Taumelscheibe zu stark gegen die Seitenwände gepreßt und es treten hohe Kräfte durch Verspannungen auf, welche die Taumelscheibenmaschine und den antreibenden Motor zerstören können, oder es entsteht zwischen der Taumelscheibe und den Seitenwänden ein Spalt. Mit dem Spalt ergibt sich aufgrund der Spaltverluste ein verschlechteter Wirkungsgrad.In both constructions, there is a difficulty in guiding the swash plate shaft so that the swash plate lies as close as possible to the side walls of the delivery space during the entire revolution, since the swash plate with minimal deviations from the calculated ideal dimension, for example due to inaccuracies in the wall surfaces, distortion of the components due to thermal expansion or rolling over foreign bodies is not in the intended inclined position. As a result, either the swash plate is pressed too hard against the side walls and high forces occur due to tension, which can destroy the swash plate machine and the driving motor, or there is a gap between the swash plate and the side walls. The gap results in a deteriorated efficiency due to the gap losses.

Aus der GB-B-874 838 und der GB-B-988 282, die sämtliche Merkmale des Oberbegriffs des Anspruchs 1 offenbart, ist bekannt, daß die Taumelscheibenwelle zur Veränderung ihrer Schrägstellung mit der Antriebswelle beweglich verbunden und durch ein sich zum einen an der Taumelscheibenwelle und zum anderen an der Antriebswelle abstützende Federelement in eine größtmögliche Schrägstellung ausgelenkt ist. Dadurch wird der Nachteil eines starren Antriebsstranges mit einem starren Wellenwinkel der Taumelscheibenwelle durch den Einsatz eines elastischen Federelements zur Auslenkung der Taumelscheibenwelle und Erzielung eines möglichst großen, aber nachgiebigen Wellenwinkels vermieden.From GB-B-874 838 and GB-B-988 282, which discloses all the features of the preamble of claim 1, it is known that the swash plate shaft for changing its inclined position is movably connected to the drive shaft and by one to the other Swashplate shaft and on the other hand on the drive shaft supporting spring element is deflected into the largest possible inclined position. As a result, the disadvantage of a rigid drive train with a rigid shaft angle of the swash plate shaft is avoided by using an elastic spring element for deflecting the swash plate shaft and achieving the largest possible, but compliant shaft angle.

Das Federelement erlaubt durch seine Nachgiebigkeit den Ausgleich von Maßabweichungen und das Überrollen kleinerer Fremdkörper, ohne daß dabei hohe Kräfte oder Verspannungen auftreten.Due to its flexibility, the spring element allows for the compensation of dimensional deviations and the rolling over of small foreign bodies without high forces or tension occurring.

Weiterhin ist ein radial bewegliches Lagerteil zur Lagerung der Taumelscheibenwelle in der Antriebswelle vorgesehen, wobei das Lagerteil durch ein im wesentlichen senkrecht zur Antriebswelle angeordnetes Federelement radial ausgelenkt wird.Furthermore, a radially movable bearing part for storing the Swashplate shaft provided in the drive shaft, wherein the bearing part is deflected radially by a spring element arranged substantially perpendicular to the drive shaft.

Die Führung des Lagerteils in radialer Richtung gegen die Federkraft verhindert ein Ausweichen desselben unter erhöhter Antriebskraft.The guidance of the bearing part in the radial direction against the spring force prevents the same from evading under increased driving force.

Die Aufgabe der Erfindung besteht also darin, die Taumelscheibe so in Anlage an die Seitenwände des Förderraumes zu bringen, daß sich bei dem Betrieb der Taumelscheibenmaschine eine gute Anlage einstellt und erhalten bleibt, so daß die Spaltverluste klein sind und Verspannungen vermieden werden.The object of the invention is therefore to bring the swash plate into contact with the side walls of the delivery chamber in such a way that a good system is obtained and maintained during operation of the swash plate machine, so that the gap losses are small and tension is avoided.

Darstellung der ErfindungPresentation of the invention

Erfindungsgemäß wird die Führung des Lagerteils dadurch erreicht, daß das Lagerteil an seinen den Seitenwänden am Ende der Antriebswelle gegenüberliegenden Seiten und eine oder beide Seitenwände über eine Verbindung mit einer sich im wesentlichen in einer Richtung senkrecht zur Mittelachse der Taumelscheibenwelle erstreckenden Nut und einem Bolzen zusammenwirken, wie es im Kennzeichen des Anspruches 1 beschrieben ist.According to the invention, the guidance of the bearing part is achieved in that the bearing part cooperates on its sides opposite the side walls at the end of the drive shaft and one or both side walls via a connection with a groove and a bolt extending essentially in a direction perpendicular to the central axis of the swash plate shaft, as described in the characterizing part of claim 1.

Die formschlüssige Verbindung wird aus Nut und Bolzen herbeigeführt, wobei es grundsätzlich keine Rolle spielt, welches Bauteil mit der Nut und welches mit dem Bolzen versehen ist. So läßt sich das Lagerteil zusätzlich um die Mittelachse der Bolzen drehen.The form-fitting connection is made from the groove and bolt, whereby it does not matter which component is provided with the groove and which is provided with the bolt. So the bearing part can also be rotated about the central axis of the bolts.

Die Ausführung der Nut in Form eines L erleichtert den Zusammenbau des Antriebsstranges.The design of the groove in the form of an L facilitates the assembly of the drive train.

Die Erfindung kann in vorteilhafter Weise auch bei Taumel scheibenpumpen angewendet werden. Sie ist aber ebenso bei als Turbine betriebenen Taumelscheibenmaschinen, beispielsweise zur Messung der Durchflußmenge, möglich.The invention can also be advantageous in the event of wobble disc pumps can be used. However, it is also possible in the case of swashplate machines operated as a turbine, for example for measuring the flow rate.

Kurze Beschreibung der ZeichnungBrief description of the drawing

Zwei Ausführungsbeispiele der Erfindung werden anhand der beigefügten Zeichnung erläutert. Es zeigt die

Fig. 1
eine Antriebsvorrichtung einer Taumelscheibenpumpe mit einem Antriebsstrang aus einer in der Antriebswelle gelagerter Taumelscheibenwelle, die
Fig. 2
einen vergrößerten Ausschnitt des Antriebsstranges und die
Fig. 3
eine vergrößerte Frontalansicht der Antriebswelle.
Two embodiments of the invention are explained with reference to the accompanying drawings. It shows the
Fig. 1
a drive device of a swash plate pump with a drive train from a swash plate shaft mounted in the drive shaft, the
Fig. 2
an enlarged section of the drive train and the
Fig. 3
an enlarged front view of the drive shaft.

Weg zur Ausführung der ErfindungWay of carrying out the invention

In Fig. 1 ist eine Taumelscheibenpumpe gezeigt, bei der eine Taumelscheibenwelle 1 durch eine Antriebswelle 2, eine doppelkegelförmige Fläche beschreibend, um einen Taumelpunkt 3 bewegt wird. Der Taumelpunkt 3 fällt mit dem Mittelpunkt der Kugelfläche 4 der Taumelscheibennabe 5 und der kugelförmigen Innenfläche 6 eines Ringes 7 zusammen. Diese Flächen begrenzen zusammen mit konischen Seitenwänden 8, 9 eines ersten, antriebsseitigen, eine Mittelöffnung aufweisenden Seitenteils 10 und eines zweiten Seitenteils 11 einen Förderraum 12. In dem Förderraum 12 befindet sich eine Taumelscheibe 13, welche auf der Kugelfläche 4 der Taumelscheibennabe 5 sitzt und über die Taumelscheibenwelle 1 in dem Förderraum 12 bewegt wird. Die Mittelöffnung in dem ersten, antriebsseitigen Seitenteil 10 dient zur Durchführung der Taumelscheibenwelle 1.1 shows a swash plate pump, in which a swash plate shaft 1 is moved about a swash point 3 by a drive shaft 2, describing a double-conical surface. The wobble point 3 coincides with the center of the spherical surface 4 of the swash plate hub 5 and the spherical inner surface 6 of a ring 7. These surfaces, together with conical side walls 8, 9 of a first, drive-side side part 10 having a central opening and a second side part 11 delimit a conveying chamber 12. In the conveying chamber 12 there is a swash plate 13 which sits on the spherical surface 4 of the swash plate hub 5 and above the swash plate shaft 1 is moved in the delivery chamber 12. The central opening in the first side part 10 on the drive side serves for the implementation of the swash plate shaft 1.

Die Taumelscheibenwelle 1 kann auf unterschiedliche Arten, z.B. Verschweißen, Verschrauben o.ä., mit der Taumelscheibennabe 5 verbunden sein. Die Taumelscheibennabe 5 kann zur Erzielung größtmöglicher Präzision aus einem Stück gefertigt sein. Selbstverständlich ist aber auch eine aus mehreren Teilen zusammengesetzte Konstruktion möglich. Der äußere Rand der Taumelscheibe 13 ist zur Erzielung einer dynamischen Dichtung vorzugsweise mit einer der kugelförmigen Innenfläche 6 entsprechenden Kontur ausgebildet. Der Förderraum 12 ist gegen den Innenraum der Pumpe durch dynamische Dichtung zwischen der Kugelfläche 4 und den entsprechenden Kugelflächen 14, 15 der Seitenteile 10, 11 abgedichtet. Gleichzeitig kann die Taumelscheibennabe 5 an diesen Stellen auch gelagert sein.The swash plate shaft 1 can be in different ways, e.g. Welding, screwing or the like, be connected to the swash plate hub 5. The swash plate hub 5 can be made in one piece to achieve the greatest possible precision. Of course, a construction composed of several parts is also possible. The outer edge of the swash plate 13 is preferably designed with a contour corresponding to the spherical inner surface 6 in order to achieve a dynamic seal. The delivery chamber 12 is sealed against the interior of the pump by dynamic sealing between the spherical surface 4 and the corresponding spherical surfaces 14, 15 of the side parts 10, 11. At the same time, the swash plate hub 5 can also be supported at these points.

Ein Ende der Taumelscheibenwelle 1 ist in einem am Ende der Antriebswelle 2 angeordneten Lagerteil 16 mittels eines Lagers geführt. Die Fig. 2 und 3 zeigen einen vergrößerten Ausschnitt des Antriebsstranges. Der Außenlaufring 17a des Lagers befindet sich in dem Lagerteil 16, der Innenlaufring 17b auf der Taumelscheibenwelle 1. Das Lagerteil 16 ist seitlich geführt und in radialer Richtung in der Art eines Schiebers verschiebbar. Um das Drehmoment zu übertragen, stützt sich das Lagerteil 16 seitlich gegen Seitenwände 2a, 2b der Antriebswelle 2 ab.One end of the swash plate shaft 1 is guided in a bearing part 16 arranged at the end of the drive shaft 2 by means of a bearing. 2 and 3 show an enlarged section of the drive train. The outer race 17a of the bearing is located in the bearing part 16, the inner race 17b on the swash plate shaft 1. The bearing part 16 is guided laterally and can be moved in the radial direction in the manner of a slide. In order to transmit the torque, the bearing part 16 is supported laterally against side walls 2a, 2b of the drive shaft 2.

Eine zwischen dem Lagerteil 16 und einer zwischen den Seitenwänden 2a, 2b befindlichen Stützwand 2c am Ende der Antriebswelle 2 angeordnetes vorgespanntes Federelement 18 lenkt das Lagerteil 16 radial nach außen in eine Lage größtmöglicher Exzentrizität aus. Das Lagerteil 16 ist an der Auflagefläche des Federelements 18 abgeflacht. Das Federelement 18 ist im Ausführungsbeispiel senkrecht zur Taumelscheibenwelle 1 angeordnet, ohne sich aber auf diese Anordnung zu beschränken. Da das Antriebsmoment quer zur Wirkungsrichtung des Federelementes 18 auf das in der Antriebswelle 2 gehaltene Lagerteil 16 übertragen wird, sind hohe Antriebsmomente übertragbar.A prestressed spring element 18 arranged between the bearing part 16 and a support wall 2c located between the side walls 2a, 2b at the end of the drive shaft 2 deflects the bearing part 16 radially outward into a position of maximum eccentricity. The bearing part 16 is flattened on the contact surface of the spring element 18. The spring element 18 is arranged perpendicular to the swash plate shaft 1 in the exemplary embodiment, but is not limited to this arrangement. Since the drive torque transversely to the direction of action of the spring element 18 on that held in the drive shaft 2 Bearing part 16 is transmitted, high drive torques can be transmitted.

Das Lagerteil 16 ist im wesentlichen senkrecht zur Mittelachse der Taumelscheibenwelle 1 angeordnet. Verändert sich die Schrägstellung der Taumelscheibenwelle um den Taumelpunkt 3 herum, so ist es für einen verspannungsfreien Zustand des Antriebsstranges erforderlich, daß sich die Lage des Lagerteils 16 ändert. Der Einsatz eines Wälzlagers zur Führung der Taumelscheibenwelle 1 in dem Lagerteil 16 läßt einen Ausgleich in axialer Richtung der Taumelscheibenwelle 1 zu. Um weiterhin einen Winkelausgleich des an den Seitenwänden 2a, 2b geführten Lagerteils 16 zu ermöglichen, ist das Lagerteil 16 an einer jeweils den Seitenwänden 2a, 2b gegenüberliegenden Seite mit einer Nut 31 versehen, in welche ein in den Seitenwänden 2a, 2b angeordneter Bolzen 32 eingreift und als Drehlager dient.The bearing part 16 is arranged substantially perpendicular to the central axis of the swash plate shaft 1. If the inclined position of the swashplate shaft changes around the wobble point 3, it is necessary for the drive train to be in a tension-free state that the position of the bearing part 16 changes. The use of a roller bearing for guiding the swash plate shaft 1 in the bearing part 16 permits compensation in the axial direction of the swash plate shaft 1. In order to further enable angular compensation of the bearing part 16 guided on the side walls 2a, 2b, the bearing part 16 is provided on a side opposite the side walls 2a, 2b in each case with a groove 31 into which a bolt 32 arranged in the side walls 2a, 2b engages and serves as a pivot bearing.

Der Bolzen 32 wird von innen in die Seitenwände 2a, 2b gesteckt und weist ein gegenüber einem Schaft verbreitertes Kopfteil auf. Wenn das Lagerteil 16 montiert ist, ist der lose eingesteckte Bolzen 32 gesichert. Eine zusätzliche Verschraubung ist entbehrlich. Mit den Bolzen 32 verfügt das Lagerteil 16 über zwei Freiheitsgrade der Bewegung. Die Nut 31 hat die Form eines L, dessen einer Schenkel sich in Richtung zu der Antriebswelle hin öffnet.The bolt 32 is inserted from the inside into the side walls 2a, 2b and has a head part widened in relation to a shaft. When the bearing part 16 is mounted, the loosely inserted bolt 32 is secured. An additional screw connection is not necessary. With the bolts 32, the bearing part 16 has two degrees of freedom of movement. The groove 31 has the shape of an L, one leg of which opens towards the drive shaft.

Nicht dargestellt ist eine Ausführung, bei welcher das Lagerteil 16 Bolzen aufweist, welche in eine Nut in den Seitenwänden 2a, 2b eingreifen. Diese Ausführung hätte den Vorteil, daß sich die Drehachse des Lagerteils 16 mit radialer Auslenkung der Taumelscheibenwelle 1 relativ zu dieser nicht verändert.An embodiment is not shown in which the bearing part 16 has bolts which engage in a groove in the side walls 2a, 2b. This embodiment would have the advantage that the axis of rotation of the bearing part 16 does not change with the radial deflection of the swash plate shaft 1 relative to the latter.

Nachfolgend wird die Funktion beschrieben. Die Drehung der Antriebswelle 2 führt das in dem Lagerteil 16 gelagerte Ende der Taumelscheibenwelle 1 auf einer Kreisbahn um die Mittelachse der Antriebswelle 2. Die Taumelscheibenwelle 1 taumelt um den Taumelpunkt 3 ohne sich selbst um ihre eigene Mittelachse zu drehen und beschreibt dabei die Mantelfläche eines Doppelkegels, dessen gemeinsame Spitze im Taumelpunkt 3 liegt. Die senkrecht zu der Taumelscheibenwelle 1 stehende Taumelscheibe 13 wälzt sich mit seinen Seitenflächen auf den Seitenwänden 8, 9 des Förderraumes 12 ab. Die Schrägstellung ist dabei von der Anlage der Taumelscheibe an die Seitenwände 8, 9 des Förderraumes 12 begrenzt. Wegen des Federelements 18 kann die Abwälzung der Taumelscheibe 13 auf den Seitenwänden 8, 9 selbst bei Überrollung von kleinen Unregelmäßigkeiten verspannungsfrei gestaltet werden.The function is described below. The rotation of the drive shaft 2 leads the end of the swash plate shaft 1, which is supported in the bearing part 16, on a circular path around the central axis of the drive shaft 2. The swash plate shaft 1 tumbles around the swash point 3 without rotating itself about its own central axis and describes the outer surface of a double cone , whose common tip is at wobble point 3. The swash plate 13, which is perpendicular to the swash plate shaft 1, rolls with its side surfaces on the side walls 8, 9 of the delivery chamber 12. The inclination is limited by the contact of the swash plate on the side walls 8, 9 of the delivery chamber 12. Because of the spring element 18, the rolling of the swash plate 13 on the side walls 8, 9 can be designed tension-free even when rolling over small irregularities.

Das Überrollen eines Fremdkörpers bewirkt folgendes: Die Taumelscheibe 5 hebt von einer der Seitenwände 8, 9 ab, wodurch die Schrägstellung der Taumelscheibenwelle 1 verringert wird. Die Verringerung der Schrägstellung verringert die radiale Auslenkung des in dem Lagerteil 16 geführten Endes der Taumelscheibenwelle 1 und das Lagerteil 16 wird gegen die Federkraft des Federelements 18 zu der Stützwand 2c hin gedrückt. Auch geringe mechanische Abweichungen der Bauteile selbst werden verspannungsfrei ausgeglichen.Rolling over a foreign body causes the following: The swash plate 5 lifts off one of the side walls 8, 9, whereby the inclined position of the swash plate shaft 1 is reduced. The reduction in the inclined position reduces the radial deflection of the end of the swash plate shaft 1 guided in the bearing part 16 and the bearing part 16 is pressed against the spring force of the spring element 18 toward the support wall 2c. Even minor mechanical deviations of the components themselves are compensated for without tension.

Beim Betrieb der Taumelscheibenmaschine liegt die Taumelscheibe 13 an den Seitenwänden 8, 9 des Förderraumes 12 an.When the swashplate machine is in operation, the swashplate 13 bears against the side walls 8, 9 of the delivery chamber 12.

Claims (4)

  1. Drive device for a swash plate machine, in which a swash plate (13) is brought partially into contact with the side walls (8, 9) of a delivery chamber (12) and bears sealingly against the latter, with the result that mutually independent delivery chambers are produced, and in which the swash plate (13) is moved about a wobble point (3) by a swash plate shaft (1) positioned obliquely relative to a drive shaft (2), the swash plate shaft (1) being deflected, by one or more spring elements (18) which are supported on the swash plate shaft (1), on the one hand, and on the drive shaft (2), on the other hand, into an extreme oblique position in which one end of the swash plate shaft is supported in a bearing part (16) at the end of the drive shaft (2), the bearing part (16) being guided, in a fashion capable of movement in the radial direction of the drive shaft (2), by a positive connection between side walls (2a, 2b) at the end of the drive shaft (2) and opposite faces of the bearing part (16) on the drive shaft (2), and being connected to the drive shaft (2) in a fashion secure against rotation in the direction of the rotary movement of said drive shaft, and the spring element (18) being arranged between the bearing part (16) and drive shaft (2), characterized in that on its sides opposite the side walls (2a, 2b) at the end of the drive shaft (2) the bearing part (16), and one or both side walls (2a, 2b) cooperate via a connection with a groove (31), extending essentially in a direction perpendicular to the central axis of the swash plate shaft (1), and a bolt (32).
  2. Drive device according to Claim 1, characterized in that at its sides opposite the side walls (2a, 2b) at the end of the drive shaft the bearing part (16) is provided in each case with a groove (31) which extends essentially in the direction perpendicular to the central axis of the swash plate shaft (1), and in that one or both of the side walls (2a, 2b) respectively has/have a bolt (32) which engages in the groove (31).
  3. Drive device according to Claim 1, characterized in that one or both side walls (2a, 2b) is/are provided with a groove (31) each, which extends essentially in a direction perpendicular to the central axis of the swash plate shaft (1), and in that on its sides opposite the side walls (2a, 2b) at the end of the drive shaft the bearing part (16) has a bolt (32) in each case which engages in the groove (31).
  4. Drive device according to one of Claims 1 to 3, characterized in that the groove (31) is constructed in the shape of an L and is arranged on the sides in such a way that there is a spacing from the upper edge and from the lower edge, the L being open in a direction opposite to the end face (33) of the bearing part.
EP94109453A 1993-07-02 1994-06-18 Drive mechanism for swash plate machine Expired - Lifetime EP0632200B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4322077 1993-07-02
DE4322077A DE4322077A1 (en) 1993-07-02 1993-07-02 Drive device for a swash plate machine

Publications (2)

Publication Number Publication Date
EP0632200A1 EP0632200A1 (en) 1995-01-04
EP0632200B1 true EP0632200B1 (en) 1996-12-11

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EP94109453A Expired - Lifetime EP0632200B1 (en) 1993-07-02 1994-06-18 Drive mechanism for swash plate machine

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US (1) US5435705A (en)
EP (1) EP0632200B1 (en)
JP (1) JPH081177B2 (en)
DE (2) DE4322077A1 (en)

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DE102005045226A1 (en) * 2005-09-22 2007-03-29 Braun Gmbh Hand part for electrical tooth brush, has conveyor device conveying medium e.g. cleaning medium, to brush head and comprising pump that is designed as wobble plate pump, where wobble plate of pump is driven by drive shaft
KR100745563B1 (en) * 2006-02-15 2007-08-02 나필찬 Flow rate a variable of compressor fluid machinery
CN102171458B (en) 2008-10-23 2015-06-10 斯沃什泵技术有限公司 Integrated pump for compressible fluids
SE535608C2 (en) * 2011-01-10 2012-10-16 Manomeka Ab Compressor with low friction seal
CN103591024A (en) * 2013-12-06 2014-02-19 余宏伟 Disk ring-compression-type multifunctional broad spectrum medium pump
CN107461332B (en) * 2017-06-30 2019-02-05 倪春堂 A kind of oil-gas mixed delivery pump

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE166879C (en) *
FR341903A (en) * 1904-04-06 1904-08-23 Pierre Samain Oscillating piston pump
GB511776A (en) * 1938-02-21 1939-08-24 Andre Dutrey Improvements in and relating to rotary pumps
FR997334A (en) * 1945-07-12 1952-01-04 Oscillating piston-disc type energy transmission device
US2475096A (en) * 1945-10-09 1949-07-05 James W F Holl Beveled interengaging impellers supercharger or blower
DE1090966B (en) * 1954-10-29 1960-10-13 Richard T Cornelius Swash plate pump
GB874838A (en) * 1956-08-21 1961-08-10 James Anstruther Hughes Bowman Improvements in or relating to rotary engines or pumps
FR1287461A (en) * 1961-01-31 1962-03-16 Improvements in positive displacement oscillating disc pumps
DE1277673B (en) * 1965-11-12 1968-09-12 Reginald Clarence Ford Nutation disc pump
DE1551082C3 (en) * 1966-07-13 1973-12-06 Giancarlo 8000 Muenchen Caoduro Inclined-axis rotary piston machine

Also Published As

Publication number Publication date
JPH081177B2 (en) 1996-01-10
US5435705A (en) 1995-07-25
JPH07151069A (en) 1995-06-13
EP0632200A1 (en) 1995-01-04
DE59401239D1 (en) 1997-01-23
DE4322077A1 (en) 1995-01-12

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