EP0105222A2 - Axial piston machine - Google Patents

Axial piston machine Download PDF

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Publication number
EP0105222A2
EP0105222A2 EP83108866A EP83108866A EP0105222A2 EP 0105222 A2 EP0105222 A2 EP 0105222A2 EP 83108866 A EP83108866 A EP 83108866A EP 83108866 A EP83108866 A EP 83108866A EP 0105222 A2 EP0105222 A2 EP 0105222A2
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EP
European Patent Office
Prior art keywords
housing
axial piston
drive shaft
bearing housing
cylinder block
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Granted
Application number
EP83108866A
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German (de)
French (fr)
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EP0105222A3 (en
EP0105222B1 (en
Inventor
Reiner Ing. Grad. Hovorka
Josef Ing. Grad. Riedhammer
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Hemscheidt Hermann Maschinenfabrik GmbH and Co
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Hemscheidt Hermann Maschinenfabrik GmbH and Co
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Priority to AT83108866T priority Critical patent/ATE30455T1/en
Publication of EP0105222A2 publication Critical patent/EP0105222A2/en
Publication of EP0105222A3 publication Critical patent/EP0105222A3/en
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Publication of EP0105222B1 publication Critical patent/EP0105222B1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B3/00—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis

Definitions

  • the invention relates to an axial piston machine according to the preamble of the main claim in the swashplate design.
  • the pistons of an axial piston machine of swash plate design, supported on an inclined swash plate, are not sealed against the cylinder bores by leakage-free sealing elements, because a certain leakage flow is necessary for the lubrication of the piston sliding surfaces.
  • a leakage gap between the piston and the cylinder wall therefore, a certain amount of the pumped medium constantly flows as leakage flow into the machine housing, from where it is returned to the tank.
  • the volume of the leakage current is dependent on various influencing variables, the viscosity of the delivery medium being particularly important in relation to the present invention.
  • a pump is to be used to pump a low-viscosity medium, such as water or HFA liquids (95-97% water, 5-3% lubricant additive)
  • a low-viscosity medium such as water or HFA liquids (95-97% water, 5-3% lubricant additive)
  • HFA liquids 95-97% water, 5-3% lubricant additive
  • the present invention is based on the requirement to provide a swash plate type axial piston machine which is simple in construction and is suitable for conveying low-viscosity media.
  • the axial piston machine has a bearing housing for the bearings of the drive shaft and a machine housing for receiving the pump body.
  • the pumped medium and the shaft bearings are housed in separate rooms and independently sealed in a suitable manner.
  • the bearing housing which is filled with a suitable lubricant such as grease, is sealed with radial shaft seals, while the machine housing, which is filled with leakage fluid, is sealed off from the drive shaft by a mechanical seal with a standing and a rotating ring, which slide against one another in a sealing manner.
  • the forces which are effective during operation are divided advantageously because all the axial forces are transmitted to the machine housing, so that the roller bearings in the bearing housing are only loaded by radial forces.
  • the compact, space-saving design allows simple, problem-free assembly and disassembly, because after loosening the fastening screws connecting the housing, the pump body housed in the machine housing can be easily removed from the drive shaft.
  • the drive shaft of the axial piston machine is mounted outside of the machine housing 2 in its own bearing housing 3 and is supported on two roller bearings 4 and 5 in its middle length range.
  • the bearing housing 3 is on the drive side with a bearing cover 6 and on the machine housing closed side of a flange-shaped sleeve 7 and sealed by radial shaft seals 8 and 9 inserted therein.
  • the bearing housing 3 is filled with a suitable lubricant.
  • a drum-shaped cylinder block 10 in the pump housing 2 is driven with the drive shaft 1.
  • the free end of the drive shaft 1 protruding into the machine housing 2 is provided with serration 11, which engages in a corresponding toothing on the inner wall of the cylinder block 10.
  • a certain number of axially directed cylinder bores 12 are arranged in the cylinder block 10 in a circle at the same angular distance from one another to the axis of rotation.
  • each cylinder bore 12 there is a longitudinally displaceable piston 13 which is slidably supported with a piston shoe 14 on an inclined, fixed swash plate 15.
  • This is mounted independently of the drive shaft 1, which is guided centrally at a lateral distance, on pins 16 arranged at right angles thereto in the machine housing, the inclination angle of the swash plate 15 being adjustable.
  • the end face of the cylinder block 10 bears against a fixed control plate 17 which is spherically shaped and in which there are two control openings which are kidney-shaped in cross section.
  • a fixed control plate 17 which is spherically shaped and in which there are two control openings which are kidney-shaped in cross section.
  • a leakage gap is formed between the cylinder bores 12 and the pistons 13, through which a small amount of the conveyed medium from the cylinder block 10 enters the machine housing 2 with each pressure stroke.
  • This leakage liquid is returned via the leakage connection 21 to the tank, not shown.
  • the machine housing 2 is sealed off from the bearing housing 3 by a mechanical seal 22, 23, the rotating ring 22 of which is fastened to the drive shaft 1 and the standing ring 23 of which is inserted into the bushing 7 opposite the swash plate 15.
  • the space between the radial shaft seal 8 which seals the bearing housing 3 and the standing ring 23 of the mechanical seal 22, 23 which seals the machine housing 2 is connected to a ventilation duct 24 leading to the outside.
  • the machine housing 2 is screwed to the outside of the bearing housing 3 in the area of the mechanical seal 22, 23.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)

Abstract

Im Maschinengehäuse 2 der in Schrägscheibenbauart ausgeführten Axialkolbenmaschine ist ein rotierender, trommelförmiger Zylinderblock 10 mit den in Zylinderbohrungen 12 längsverschiebbaren Kolben 13 gelagert. Der Zylinderblock 10 ist auf das freie Ende einer rotierenden Antreibswelle 1 aufgesteckt, die in ihrem mittleren Längenbereich auf zwei Wälzlagern 4 und 5 in einem gegenüber dem Maschinengehäuse vollständig abgedichteten Lagergehäuse 3 gelagert ist. Die Kolben 13 sind in Kolbenschuhen 14 auf einer stehenden Schrägscheibe 15 abgestützt, deren Neigungslage im Maschinengehäuse 2 verstellbar ist. Zur Abdichtung des Maschinengehäuses 2 zum Lagergehäuse 3 ist eine Gleitringdichtung 22, 23 vorgesehen, die aus einem auf der Antriebswelle 1 befestigten drehenden Ring 22 und einem stehenden Ring 23 im Maschinengehäuse 2 zusammengesetzt ist.A rotating, drum-shaped cylinder block 10 with the pistons 13, which are longitudinally displaceable in cylinder bores 12, is mounted in the machine housing 2 of the axial piston machine designed in a swashplate design. The cylinder block 10 is plugged onto the free end of a rotating drive shaft 1, which is mounted in its middle length region on two roller bearings 4 and 5 in a bearing housing 3 which is completely sealed off from the machine housing. The pistons 13 are supported in piston shoes 14 on a standing swash plate 15, the inclination of which is adjustable in the machine housing 2. To seal the machine housing 2 from the bearing housing 3, a mechanical seal 22, 23 is provided, which is composed of a rotating ring 22 fastened to the drive shaft 1 and a standing ring 23 in the machine housing 2.

Description

Die Erfindung betrifft eine Axialkolbenmaschine gemäß dem Oberbegriff des Hauptanspruches in Schrägscheibenbauart.The invention relates to an axial piston machine according to the preamble of the main claim in the swashplate design.

Die auf einer geneigt angeordneten Schrägscheibe abgestützten Kolben einer Axialkolbenmaschine in Schrägscheibenbauart sind gegenüber den Zylinderbohrungen nicht durch leckstromfreie Dichtelemente abgedichtet, weil ein bestimmter Leckstrom für die Schmierung der Kolbengleitflächen notwendig ist. Durch, einen Leckspalt zwischen dem Kolben und der Zylinderwandung fließt deshalb ständig eine gewisse Menge des Fördermediums als Leckstrom in das Maschinengehäuse, von wo es zum Tank zurückgeleitet wird. Das Volumen des Leckstromes ist von verschiedenen Einflußgrößen abhängig, wobei es in Bezug auf die vorliegende Erfindung insbesondere auf die Viskosität des Fördermediums ankommt. Soll beispielsweise mit einer Pumpe ein niederviskoses Medium, wie Wasser oder HFA-Flüssigkeiten (95-97% Wasser, 5-3% Schmiermittelzusatz) gefördert werden, dann stellt sich vor allem das Problem der Abdichtung der überaus empfindlichen Lager von der Antriebswelle, die bei leistungsstarken Pumpen einer sehr sorgfältigen Schmierung bedürfen. Die Abdichtung der an dem der Antriebsseite gegenüberliegenden Ende der Antriebswelle im Maschinengehäuse angeordneten Wellenlager gegen Wasser ist aber sehr aufwendig und führt zu einer Vergrösserung der Baulänge und des Bauvolume der Pumpe, weil die Vergrösserung der Stützweite eine höhere Wellendurchbiegung zur Folge hat, die infolgedessen verstärkt werden muß. Deshalb sind leistungsstarke Axialkolbenmaschinen in Schrägscheibenbauart bisher noch nicht zur Förderung von Wasser oder anderen niederviskosen Medien verwendet worden.The pistons of an axial piston machine of swash plate design, supported on an inclined swash plate, are not sealed against the cylinder bores by leakage-free sealing elements, because a certain leakage flow is necessary for the lubrication of the piston sliding surfaces. Through a leakage gap between the piston and the cylinder wall, therefore, a certain amount of the pumped medium constantly flows as leakage flow into the machine housing, from where it is returned to the tank. The volume of the leakage current is dependent on various influencing variables, the viscosity of the delivery medium being particularly important in relation to the present invention. If, for example, a pump is to be used to pump a low-viscosity medium, such as water or HFA liquids (95-97% water, 5-3% lubricant additive), then the problem of sealing the extremely sensitive bearings from the drive shaft, which arises, arises powerful pumps require very careful lubrication. The sealing of the shaft bearing on the opposite end of the drive shaft in the machine housing against water is very complex and leads to an increase in the overall length and volume of the pump, because the increase in the span results in a higher shaft deflection, which is consequently increased got to. For this reason, high-performance swashplate-type axial piston machines have not been used to pump water or other low-viscosity media.

Es ist bekannt, die Antriebswelle des Zylinderblockes von AxialKolbenmaschinen in Wälzlagern zu lagern. Der form- und/oder kraftschlüssig mit der Antriebswelle verbundene Zylinderblock ist dann innen (DE-PS 829 553) oder außen auf der Mantelfläche (DE-OS 21 14 923) durch Wälz- oder Gleitlager zusätzlich abgestützt. Eine Abdichtung der Lager gegenüber der Leckflüssigkeit im Pumpengehäuse ist nicht vorgesehen. HFA-Flüssigkeiten als Fördermedium kommen daher nicht in Betracht.It is known to mount the drive shaft of the cylinder block of axial piston machines in roller bearings. The cylinder block which is positively and / or non-positively connected to the drive shaft is then additionally supported on the inside (DE-PS 829 553) or on the outside on the lateral surface (DE-OS 21 14 923) by roller or slide bearings. There is no provision for the bearings to be sealed off from the leakage liquid in the pump housing. HFA liquids are therefore out of the question.

Es ist auch bekannt, daß Maschinengehäuse von Axialkolbenmaschinen auf einer Seite der an beiden Enden innerhalb des Maschinengehäuses gelagerten Antriebswelle durch eine Gleitringdichtung abzudichten, die mit einem drehenden Ring auf der Antriebswelle gegen einen stehenden Ring im Maschinengehäuse abdichtet (US-PS 3 643 550, US-PS 2 495 685). Eine Abdichtung der Lager gegenüber der Leckflüssigkeit ist darum nicht vorgesehen.It is also known to seal the machine housing of axial piston machines on one side of the drive shaft mounted at both ends within the machine housing by means of a mechanical seal which seals with a rotating ring on the drive shaft against a stationary ring in the machine housing (US Pat. No. 3,643,550, US) -PS 2 495 685). Sealing of the bearings against the case drain fluid is therefore not provided.

Für den Betrieb von Axialkolbenpumpen mit HFA-Flüssigkeiten ist vorgeschlagen worden, die Wälzlager mit Dauerschmierung völlig abzukapseln und damit auch die durchgehende Welle sowie die dort befindliche Kupplung von der Hydraulik-Flüssigkeit zu trennen (o + p "ölhydraulik und pneumatik" 22 (1978) Nr. 1, Seiten 16 bis 18). Durch die Abkapslung der beiden Lager der durchgehenden Welle wird der Aufbau der Pumpe aber sehr aufwendig.For the operation of axial piston pumps with HFA fluids, it has been proposed to completely encapsulate the rolling bearings with permanent lubrication and thus also to separate the through shaft and the coupling located there from the hydraulic fluid (o + p "oil hydraulics and pneumatics" 22 (1978) No. 1, pages 16 to 18). By encapsulating the two bearings of the continuous shaft, the construction of the pump is very complex.

Der vorliegenden Erfindung liegt die Auflage zugrunde, eine im Aufbau einfache Axialkolbenmaschine in Schrägscheibenbauart zu schaffen, die zur Förderung von niederviskosen Medien geeignet ist.The present invention is based on the requirement to provide a swash plate type axial piston machine which is simple in construction and is suitable for conveying low-viscosity media.

Diese Aufgabe wird mit den im Kennzeichen des Hauptanspruches angegebenen Mitteln gelöst. Die vorteilhafte Ausgestaltung der Erfindung ist Gegenstand der Unteransprüche.This object is achieved with the means specified in the characterizing part of the main claim. The advantageous embodiment of the invention is the subject of the dependent claims.

Die erfindungsgemäße Axialkolbenmaschine besitzt ein Lagergehäuse für die Lager der Antriebswelle und ein Maschinengehäuse zur Aufnahme des Pumpenkörpers. Das Fördermedium und die Wellenlager sind in voneinander getrennten Räumen untergebracht und unabhängig voneinander auf geeignete Weise abgedichtet. So erfolgt die Abdichtung des zur Schmierung der Lager mit einem geeigneten Schmiermittel wie Fett gefüllten Lagergehäuses mit Radialwellendichtungen, während zur Abdichtung des mit Leckflüssigkeit gefüllten Maschinengehäuses gegenüber der Antriebswelle eine Gleitringdichtung mit einem stehenden und einem drehenden Ring vorgesehen ist, die abdichtend aufeinander gleiten.The axial piston machine according to the invention has a bearing housing for the bearings of the drive shaft and a machine housing for receiving the pump body. The pumped medium and the shaft bearings are housed in separate rooms and independently sealed in a suitable manner. For example, the bearing housing, which is filled with a suitable lubricant such as grease, is sealed with radial shaft seals, while the machine housing, which is filled with leakage fluid, is sealed off from the drive shaft by a mechanical seal with a standing and a rotating ring, which slide against one another in a sealing manner.

Bei der erfindungsgemäßen Axialkolbenmaschine sind die im Betrieb wirksamen Kräfte in vorteilhafter Weise aufgeteilt, weil alle axialen Kräfte auf das Maschinengehäuse übertragen werden, so daß die Wälzlager im Lagergehäuse nur durch radiale Kräfte belastet sind. Die kompakte, raumsparende Bauart erlaubt eine einfache, problemlose Montage und Demontage, weil nach dem Lösen der die Gehäuse miteinander verbindenden Befestigungsschrauben der im Maschinengehäuse untergebrachte Pumpenkörper einfach von der Antriebswelle abgezogen werden kann.In the axial piston machine according to the invention, the forces which are effective during operation are divided advantageously because all the axial forces are transmitted to the machine housing, so that the roller bearings in the bearing housing are only loaded by radial forces. The compact, space-saving design allows simple, problem-free assembly and disassembly, because after loosening the fastening screws connecting the housing, the pump body housed in the machine housing can be easily removed from the drive shaft.

Nachfolgend wird ein Ausführungsbeispiel der Erfindung anhand der Zeichnung erläutert, die eine erfindungsgemäße Axialkolbenmaschine in Schrägscheibenbauart im Längsschnitt zeigt.An exemplary embodiment of the invention is explained below with reference to the drawing, which shows a swash plate type axial piston machine according to the invention in longitudinal section.

Die mit 1 bezeichnete Antriebswelle der Axialkolbenmaschine ist außerhalb des Maschinengehäuses 2 in einem eigenen Lagergehäuse 3 gelagert und in ihrem mittleren Längenbereich auf zwei Wälzlagern 4 und 5 abgestützt. Das Lagergehäuse 3 ist antriebsseitig mit einem Lagerdeckel 6 und an der zum Maschinengehäuse anliegenden Seite von einer flanschförmigen Büchse 7 verschlossen und durch darin eingesetzte Radialwellendichtungen 8 und 9 abgedichtet. Zur Schmierung der Wälzlager 4 und 5 ist das Lagerhäuse 3 mit einem geeigneten Schmiermittel angefüllt.The drive shaft of the axial piston machine, designated 1, is mounted outside of the machine housing 2 in its own bearing housing 3 and is supported on two roller bearings 4 and 5 in its middle length range. The bearing housing 3 is on the drive side with a bearing cover 6 and on the machine housing closed side of a flange-shaped sleeve 7 and sealed by radial shaft seals 8 and 9 inserted therein. To lubricate the roller bearings 4 and 5, the bearing housing 3 is filled with a suitable lubricant.

Mit der Antriebswelle 1 wird ein trommelförmiger Zylinderblock 10 im Pumpengehäuse 2 angetrieben. Dazu ist das in das Maschinengehäuse 2 hineinragende freie Ende der Antriebswelle 1 mit einer Kerbverzahnung 11 versehen, die in eine korrespondierende Verzahnung an der Innenwandung des Zylinderblockes 10 eingreift.A drum-shaped cylinder block 10 in the pump housing 2 is driven with the drive shaft 1. For this purpose, the free end of the drive shaft 1 protruding into the machine housing 2 is provided with serration 11, which engages in a corresponding toothing on the inner wall of the cylinder block 10.

In dem Zylinderblock 10 ist eine bestimmte Anzahl von axialgerichteten Zylinderbohrungen 12 kreisförmig zur Drehachse in gleichem Winkelabstand voneinander angeordnet. In jeder Zylinderbohrung 12 befindet sich ein längsverschiebbarer Kolben 13, der mit einem Kolbenschuh 14 gleitend auf einer geneigt angeordneten, feststehenden Schrägscheibe 15 abgestützt ist. Diese ist unabhängig von der mittig mit seitlichem Abstand hindurchgeführten Antriebswelle 1 auf rechtwinklig dazu angeordneten Zapfen 16 im Maschinengehäuse gelagert, wobei der Neigungswinkel der Schrägscheibe 15 verstellbar ist. Wenn der Zylinderblock 10 in Umdrehung versetzt wird, ruft die Schrägscheibe 15 aufgrund ihrer Neigung eine hin- und hergehende Bewegung der Kolben 13 in den entsprechenden Zylinderbohrungen 12 hervor. Der Zylinderblock 10 liegt stirnseitig gegen eine feststehende, kugelflächig ausgeformte Steuerplatte 17 an, in der sich zwei im Querschnitt nierenförmig ausgebildete Steueröffnungen befinden. Bei in Umdrehung versetztem Zylinderblock 10 werden die Hubräume der Zylinderräume 12 über die Steueröffnungen der Steuerplatte 17 wechselweise mit einem Saugkanal 18 und einem Druckkanal 19 in dem sich daran anschließenden, das Maschinengehäuse 2 nach außen abschließenden Anschlußdeckel 20 verbunden.A certain number of axially directed cylinder bores 12 are arranged in the cylinder block 10 in a circle at the same angular distance from one another to the axis of rotation. In each cylinder bore 12 there is a longitudinally displaceable piston 13 which is slidably supported with a piston shoe 14 on an inclined, fixed swash plate 15. This is mounted independently of the drive shaft 1, which is guided centrally at a lateral distance, on pins 16 arranged at right angles thereto in the machine housing, the inclination angle of the swash plate 15 being adjustable. When the cylinder block 10 is rotated, the swash plate 15, due to its inclination, causes the pistons 13 to move back and forth in the corresponding cylinder bores 12. The end face of the cylinder block 10 bears against a fixed control plate 17 which is spherically shaped and in which there are two control openings which are kidney-shaped in cross section. When the cylinder block 10 is rotated, the displacements of the cylinder spaces 12 are alternately connected via the control openings of the control plate 17 to a suction channel 18 and a pressure channel 19 in the connecting cover 20 which adjoins the machine housing 2 to the outside.

Zwischen den Zylinderbohrungen 12 und den Kolben 13 wird jeweils ein Leckspalt gebildet, durch den bei jedem Druckhub ein geringer Mengenanteil des Fördermediums aus dem Zylinderblock 10 in das Maschinengehäuse 2 eintritt. Diese Leckflüssigkeit wird über den Leckanschluß 21 zu dem nicht dargestellten Tank zurückgeführt. Das Maschinengehäuse 2 ist gegenüber dem Lagerhäuse 3 durch eine Gleitringdichtung 22, 23 abgedichtet, deren drehender Ring 22 auf der Antriebswelle 1 befestigt und deren stehender Ring 23 in die der Schrägscheibe 15 gegenüberliegende Büchse 7 eingesetzt ist. Der Raum zwischen der das Lagergehäuse 3 abdichtenden Radialwellendichtung 8 und dem stehenden Ring 23 der das Maschinengehäuse 2 abdichtenden Gleitringdichtung 22, 23 ist an einen nach außen führenden Entlüftungskanal 24 angeschlossen. Das Maschinengehäuse 2 ist mit dem Lagergehäuse 3 im Bereich der Gleitringdichtung 22, 23 außen verschraubt.A leakage gap is formed between the cylinder bores 12 and the pistons 13, through which a small amount of the conveyed medium from the cylinder block 10 enters the machine housing 2 with each pressure stroke. This leakage liquid is returned via the leakage connection 21 to the tank, not shown. The machine housing 2 is sealed off from the bearing housing 3 by a mechanical seal 22, 23, the rotating ring 22 of which is fastened to the drive shaft 1 and the standing ring 23 of which is inserted into the bushing 7 opposite the swash plate 15. The space between the radial shaft seal 8 which seals the bearing housing 3 and the standing ring 23 of the mechanical seal 22, 23 which seals the machine housing 2 is connected to a ventilation duct 24 leading to the outside. The machine housing 2 is screwed to the outside of the bearing housing 3 in the area of the mechanical seal 22, 23.

Claims (8)

1. Axialkolbenmaschine in Schrägscheibenbauart mit einer in Wälzlagern gelagerten Antriebswelle zum Antrieb eines damit verbundenen, in einem Maschinengehäuse angeordneten, trommelförmigen Zylinderblockes, in dessen axial gerichteten, kreisförmig zur Antriebswelle und Drehachse angeordneten Zylinderbohrungen längsverschiebbare Kolben gelagert sind, die sich mit Kolbenschuhen auf einer beidseitig mit Zapfen im Maschinengehäuse schwenkbar gelagerten Schrägscheibe abstützen, wobei die Zylinderbohrungen über eine Steuerplatte wechselweise an einen Saugkanal und einen Druckkanal für das zu fördernde Medium angeschlossen sind, gekennzeichnet durch folgende Merkmale: - die Antriebswelle (1) ist außerhalb des Maschinengehäuses (2) in ihrem mittleren Längenbereich von zwei Wälzlagern (4, 5) in einem Lagergehäuse (3) abgestützt, - der Zylinderblock (10) ist auf dem aus dem Lagergehäuse (3) austretenden, freien Ende der Antriebswelle (1) gelagert, - das Maschinengehäuse (2) ist gegenüber dem Lagergehäuse (3) durch eine Gleitringdichtung (22, 23) abgedichtet, die mit einem auf der Antriebswelle (1) befestigten drehenden Ring (22) gegen einen in eine Büchse (7) des Lagergehäuses (3) eingesetzten stehenden Ring (23) abdichtend anliegt. 1. Axial piston machine in swashplate design with a drive shaft mounted in roller bearings for driving a connected, drum-shaped cylinder block arranged in a machine housing, in the axially directed, circularly arranged to the drive shaft and axis of rotation cylinder bores are longitudinally displaceable pistons, which are supported on both sides with piston shoes Support the pivot in the machine housing of the swashplate which is pivotally mounted, whereby the cylinder bores are alternately connected to a suction channel and a pressure channel for the medium to be conveyed via a control plate, characterized by the following features: - The drive shaft (1) is supported outside of the machine housing (2) in its middle length range by two roller bearings (4, 5) in a bearing housing (3), - The cylinder block (10) is mounted on the free end of the drive shaft (1) emerging from the bearing housing (3), - The machine housing (2) is sealed with respect to the bearing housing (3) by a mechanical seal (22, 23), which with a rotating ring (22) attached to the drive shaft (1) against a bushing (7) in the bearing housing (3 ) used standing ring (23) rests sealingly. 2. Axialkolbenmaschine nach Anspruch 1, dadurch gekennzeichnet, daß das den Zylinderblock (10) aufnehmende Maschinengehäuse (2) und das der Wellenlagerung dienende Lagergehäuse (3) als getrennte Baukörper ausgebildet und im Bereich der Gleitringdichtung (22, 23) miteinander verbunden sind.2. Axial piston machine according to claim 1, characterized in that the cylinder block (10) accommodating machine housing (2) and the shaft bearing bearing housing (3) are formed as separate structures and are connected to one another in the area of the mechanical seal (22, 23). 3. Axialkolbenmaschine nach Anspruch 1 und 2, dadurch gekennzeichnet, daß das freie Ende der Antriebswelle (1) mit einer Kerbverzahnung (11) in eine korrespondierende Innenverzahnung des Zylinderblockes (10) eingreift.3. Axial piston machine according to claim 1 and 2, characterized in that the free end of the drive shaft (1) engages with a serration (11) in a corresponding internal toothing of the cylinder block (10). 4. Axialkolbenmaschine nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß der Zylinderblock (10) stirnseitig an einer kugelflächig ausgeformten Steuerplatte (17) anliegt.4. Axial piston machine according to claim 1 to 3, characterized in that the cylinder block (10) rests on the end face on a spherically shaped control plate (17). 5. Axialkolbenmaschine nach Anspruch 1 bis 4, dadurch gekennzeichnet, daß das Lagergehäuse (3) beiderseits der Wälzlager (4, 5) durch Radialwellendichtungen (8, 9) abgedichtet ist.5. Axial piston machine according to claim 1 to 4, characterized in that the bearing housing (3) on both sides of the rolling bearings (4, 5) is sealed by radial shaft seals (8, 9). 6. Axialkolbenmaschine nach Anspruch 1 bis 5, dadurch gekennzeichnet, daß die Gleitringdichtung (22, 23) aus einem harten und einem gleitfähigen Ring zusammengesetzt ist.6. Axial piston machine according to claim 1 to 5, characterized in that the mechanical seal (22, 23) is composed of a hard and a slidable ring. 7. Axialkolbenmaschine nach Anspruch 1 bis 6, dadurch gekennzeichnet, daß der Raum zwischen der das Lagergehäuse (3) abdichtenden Radialwellendichtung (8) und dem stehenden Ring (23) der das Maschinengehäuse (2) abdichtenden Gleitringdichtung (22, 23) an einen nach außen führenden Entlüftungskanal (24) angeschlossen ist.7. Axial piston machine according to claim 1 to 6, characterized in that the space between the bearing housing (3) sealing radial shaft seal (8) and the standing ring (23) of the machine housing (2) sealing mechanical seal (22, 23) to one after externally leading ventilation duct (24) is connected. 8. Axialkolbenmaschine nach Anspruch 1 bis 7, dadurch gekennzeichnet, daß die Wälzlager (4, 5) als Kegelrollenlager ausgebildet sind.8. Axial piston machine according to claim 1 to 7, characterized in that the rolling bearings (4, 5) are designed as tapered roller bearings.
EP83108866A 1982-09-10 1983-09-08 Axial piston machine Expired EP0105222B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83108866T ATE30455T1 (en) 1982-09-10 1983-09-08 AXIAL PISTON MACHINE.

Applications Claiming Priority (2)

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DE3233579A DE3233579C2 (en) 1982-09-10 1982-09-10 Axial piston machine
DE3233579 1982-09-10

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EP0105222A2 true EP0105222A2 (en) 1984-04-11
EP0105222A3 EP0105222A3 (en) 1985-05-15
EP0105222B1 EP0105222B1 (en) 1987-10-28

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AT (1) ATE30455T1 (en)
DE (1) DE3233579C2 (en)

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US4771676A (en) * 1986-05-19 1988-09-20 Toshiba Kikai Kabushiki Kaisha Hydraulic transmission device
DE3743125A1 (en) * 1987-12-18 1989-07-06 Brueninghaus Hydraulik Gmbh AXIAL PISTON PUMP
US5105723A (en) * 1990-04-06 1992-04-21 Zexel Corporation Swash plate type axial piston pump
US5135362A (en) * 1990-04-17 1992-08-04 Martin Francis J Hydraulic axial piston pump
US5440878A (en) * 1992-08-27 1995-08-15 Vernon E. Gleasman Variable hydraulic machine
JP3232544B2 (en) * 1993-11-24 2001-11-26 株式会社豊田自動織機 Weir structure of vehicle air conditioning compressor
US5538401A (en) * 1994-07-05 1996-07-23 Denison Hydraulics Inc. Axial piston pump
FR2721352B1 (en) * 1994-06-17 1996-09-06 Leduc Rene Hydro Sa High pressure pump to supply fuel injectors for internal combustion engines.
DE102006058355A1 (en) * 2006-03-10 2007-09-13 Brueninghaus Hydromatik Gmbh Combi pump housing for several nominal sizes
DE102015006157B3 (en) * 2015-05-11 2016-06-23 Orpu Pumpenfabrik Gmbh Compact bearing of a pump shaft in a lantern coupling
CN114382609A (en) * 2021-12-13 2022-04-22 天津大学 Reciprocating high-low pressure self-adaptive compensation sealing device
DE202023103491U1 (en) 2023-06-23 2023-08-17 Orpu Pumpenfabrik Gmbh Arrangement of a mechanical seal on a motor/pump shaft

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Also Published As

Publication number Publication date
EP0105222A3 (en) 1985-05-15
US4520712A (en) 1985-06-04
DE3233579C2 (en) 1984-09-13
DE3233579A1 (en) 1984-03-15
EP0105222B1 (en) 1987-10-28
ATE30455T1 (en) 1987-11-15

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