EP1253322B1 - Hydraulic machine - Google Patents
Hydraulic machine Download PDFInfo
- Publication number
- EP1253322B1 EP1253322B1 EP20020009463 EP02009463A EP1253322B1 EP 1253322 B1 EP1253322 B1 EP 1253322B1 EP 20020009463 EP20020009463 EP 20020009463 EP 02009463 A EP02009463 A EP 02009463A EP 1253322 B1 EP1253322 B1 EP 1253322B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shaft
- housing
- hydraulic
- pump
- valve block
- 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.)
- Expired - Lifetime
Links
- 239000010720 hydraulic oil Substances 0.000 claims description 5
- 239000010687 lubricating oil Substances 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000008878 coupling Effects 0.000 description 8
- 238000010168 coupling process Methods 0.000 description 8
- 238000005859 coupling reaction Methods 0.000 description 8
- 238000007789 sealing Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
- F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
- F04C15/0034—Sealing arrangements in rotary-piston machines or pumps for other than the working fluid, i.e. the sealing arrangements are not between working chambers of the machine
- F04C15/0038—Shaft sealings specially adapted for rotary-piston machines or pumps
Definitions
- the invention relates to a hydraulic working machine, in particular for the promotion of hydraulic oil, lubricating oil or like, according to the preamble of claim 1 more defined type.
- Such a hydraulic machine is out of practice is known and is for example as a drive unit of a Hydraulic system formed.
- the hydraulic working machine can be part of a per se known hydraulic unit, which is substantially a hydraulic pump, a hydraulic oil reservoir, a Valve block and a designed as an electric motor Drive unit for the hydraulic pump comprises.
- the hydraulic pump which is attached to the valve block and in one Pump housing is arranged, immersed in the hydraulic oil reservoir and stands with the also on the valve block attached drive unit in operative connection, that an output shaft of the drive unit with a drive shaft the hydraulic pump is coupled.
- the coupling takes place in the region of a trained as a coupling space and sealed to the reservoir by means of an O-ring Breakthrough of the valve block.
- DE 29 44 263 A1 discloses a as Gear machine trained hydraulic machine with a housing that is liquid-tight by a lid is closed. In the lid a hole is formed, by a drive shaft for driving a gear led to the outside. In a radially expanded part the bore is a shaft seal arranged on the an appropriately inserted into the bore fitting part connects. This fitting part, which is used to center the entire gear machine on another machine part is attached by a plurality of screws on the housing cover and represents a total of a complex Zentri mecanics stolenname represents.
- US 2,883,213 shows a pump with one of several Plate formed pump housing, from which a shaft through a bore is guided to the outside, wherein the bore with an axial seal for sealing the housing in the area the passage of the shaft is formed.
- the outward guided area of the shaft can with another unit get connected.
- the problem here is that no action to center such another Assembly are provided opposite the pump housing.
- a commutator motor is known from DE 44 23 531 A1, having a brush holder plate, which on a Drive housing of a hydraulic pump is flanged.
- the Brush support plate is penetrated by a rotor shaft, which protrudes into the drive housing.
- the rotor shaft is mounted in a rolling bearing.
- the rolling bearing on the one hand engages in a centering recess of the brush holder plate and on the other hand in a bearing recess of the Drive housing.
- a hydraulic working machine the features according to the preamble of claim 1, in which the shaft seal as a centering device is formed, wherein the shaft seal on the one hand in the machine housing and on the other hand in the breakthrough of Carrier unit dips, has the advantage that the machine housing in a simple way by means of the shaft seal is centered relative to the carrier assembly, so for example, the shaft and one coupled to the shaft second wave reliably aligned with each other.
- the invention uses for centering an already required anyway Component and makes the use more expensive additional components, such as one on the machine housing trained passport, superfluous.
- the hydraulic working machine according to the invention can in an advantageous embodiment, for example, a pump unit represent, in which a trained as a gear pump Hydraulic pump on serving as a Victoria Valve block is attached and by means of a corresponding Building unit forming electric motor drivable is.
- the electric motor has in the usual way an output shaft, with a drive shaft of the hydraulic pump is coupled.
- the hydraulic pump is by means of a Centered shaft seal against the valve block, through which are led.
- the hydraulic working machine it can also be a hydraulic motor, such as a gear motor, act.
- the shaft then forms the output shaft of the motor.
- the part of the machine housing which is a first area the shaft seal is limited in the radial direction,
- an associated with the machine housing Pump cover, and a second area of the shaft seal limiting carrier assembly may be a valve block be.
- the carrier assembly may also be, for example, a housing a drive unit, such as an electric motor, for be formed a hydraulic pump. In this case, dives the shaft seal on the one hand in the housing of the hydraulic pump and on the other hand into the housing of the drive unit and thus serves to center the hydraulic pump opposite the drive unit.
- a drive unit such as an electric motor
- the shaft seal as a seal between the pump housing and be provided the valve block.
- the sealing effect is here in particular, guaranteed when the shaft seal a Rubber sheath has.
- the gasket of the breakthrough opposite the environment of the machine housing between the machine housing and the Victoria an O-ring be arranged. If the shaft seal is a rubber jacket optionally, the O-ring may be omitted.
- the sole FIGURE shows a hydraulic pump attached to a Valve block is attached.
- the embodiment shown in the figure shows a Hydraulic working machine 1, the one as Shinbautechnik Serving valve block 2 and a hydraulic pump. 3 includes.
- the hydraulic pump 3 is fixed to the valve block 2 and dives into a pressure medium reservoir, not shown here which is connected via connecting means 4 also attached to the valve block 2.
- the hydraulic pump 3 is presently designed as a gear pump and has an existing from the housing parts 5, 6 and 7 existing Machine housing, i. Pump housing, on, where the housing part 7 is designed as a pump cover and on the valve block 2 adjacent.
- the trained as a gear pump hydraulic pump 3 is over a drive shaft 8 driven, which the housing cover. 7 engages and with a coupling portion 9 in a than Clutch space formed opening 10 of the valve block 2 dives.
- the coupling portion 9 is used for coupling an electric motor, not shown here, by means of in bores 11 engaging screws on the valve block 2 is fastened.
- the electric motor usually has an output shaft on, via the coupling portion 9 with the drive shaft 8 of the hydraulic pump 3 can be coupled.
- a shaft seal 14 which faces away from the hydraulic pump 3 with his End immersed in the opening 10 of the valve block 2 and so for centering the hydraulic pump 3 with respect to the Valve block 2 and thus with respect to the not shown here Electric motor is used.
- a O-ring 15 is arranged to seal the clutch chamber 10 against the volume the pressure medium reservoir, not shown between the pump cover 7 and the valve block 2 . These may be omitted when a shaft seal 14 with rubber sheath is used, since then the shaft seal 14 this Sealing function takes over.
- the invention is not limited to the illustrated Embodiment is limited. Rather, it can
- the invention also relates to a geared motor be transmitted to an output shaft, which is a carrier assembly goes through and with a corresponding one Shaft of a driven assembly as accurate as possible must be aligned.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
- Hydraulic Motors (AREA)
Description
Die Erfindung geht von einer hydraulischen Arbeitsmaschine, insbesondere zur Förderung von Hydrauliköl, Schmieröl oder dergleichen, gemäß der im Oberbegriff des Patentanspruches 1 näher definierten Art aus.The invention relates to a hydraulic working machine, in particular for the promotion of hydraulic oil, lubricating oil or like, according to the preamble of claim 1 more defined type.
Eine solche hydraulische Arbeitsmaschine ist aus der Praxis bekannt und ist beispielsweise als Antriebseinheit eines Hydrauliksystems ausgebildet.Such a hydraulic machine is out of practice is known and is for example as a drive unit of a Hydraulic system formed.
Die hydraulische Arbeitsmaschine kann Bestandteil eines per se bekannten Hydraulikaggregats sein, das im wesentlichen eine Hydraulikpumpe, einen Hydraulikölvorratsbehälter, einen Ventilblock sowie eine als Elektromotor ausgebildete Antriebseinheit für die Hydraulikpumpe umfaßt. Die Hydraulikpumpe, die an dem Ventilblock befestigt ist und in einem Pumpengehäuse angeordnet ist, taucht in den Hydraulikölvorratsbehälter ein und steht mit der ebenfalls an dem Ventilblock befestigten Antriebseinheit derart in Wirkverbindung, daß eine Abtriebswelle der Antriebseinheit mit einer Antriebswelle der Hydraulikpumpe gekuppelt ist. Die Kupplung erfolgt im Bereich eines als Kupplungsraum ausgebildeten und gegenüber dem Vorratsbehälter mittels eines O-Rings abgedichteten Durchbruches des Ventilblocks. Damit die Kupplung zwischen der Antriebswelle der Hydraulikpumpe und der Abtriebswelle der Antriebseinheit nicht verschleißt und geräuscharm arbeitet und damit keine radialen Kräfte auf die Antriebswelle ausgeübt werden, ist es erforderlich, daß die beiden Wellen, von denen zumindest die Antriebswelle der Hydraulikpumpe einen Wellendichtring durchgreift, miteinander fluchten.The hydraulic working machine can be part of a per se known hydraulic unit, which is substantially a hydraulic pump, a hydraulic oil reservoir, a Valve block and a designed as an electric motor Drive unit for the hydraulic pump comprises. The hydraulic pump, which is attached to the valve block and in one Pump housing is arranged, immersed in the hydraulic oil reservoir and stands with the also on the valve block attached drive unit in operative connection, that an output shaft of the drive unit with a drive shaft the hydraulic pump is coupled. The coupling takes place in the region of a trained as a coupling space and sealed to the reservoir by means of an O-ring Breakthrough of the valve block. So that the clutch between the drive shaft of the hydraulic pump and the Output shaft of the drive unit does not wear and low noise works and thus no radial forces on the Drive shaft are exerted, it is necessary that the two shafts, of which at least the drive shaft of the Hydraulic pump passes through a shaft seal, with each other aligned.
Dies wird dadurch gewährleistet, daß die Hydraulikpumpe über einen sogenannten Einpaß in den Ventilblock eingesetzt ist. Der Einpaß ist an dem Pumpengehäuse ausgebildet und greift in eine Ausnehmung des Ventilblocks ein. Ein Einpaß an dem Pumpengehäuse ist eine kostenintensive Maßnahme.This is ensured by the hydraulic pump over a so-called Einpaß used in the valve block is. The Einpaß is formed on the pump housing and engages in a recess of the valve block. A fit on the pump housing is a costly measure.
Auch aus der DE 29 44 263 A1 ist eine Lösung mit einem Einpaßteil bekannt. Die DE 29 44 263 A1 offenbart eine als Zahnradmaschine ausgebildete hydraulische Arbeitsmaschine mit einem Gehäuse, das durch einen Deckel flüssigkeitsdicht verschlossen ist. In dem Deckel ist eine Bohrung ausgebildet, durch das eine Triebwelle zum Antrieb eines Zahnrads nach außen geführt ist. In einem radial erweiterten Teil der Bohrung ist eine Wellendichtung angeordnet, an die sich ein passend in die Bohrung eingesetztes Einpassteil anschließt. Dieses Einpassteil, welches zum Zentrieren der gesamten Zahnradmaschine an einem anderen Maschinenteil dient, ist durch mehrere Schrauben an dem Gehäusedeckel befestigt und stellt insgesamt eine aufwendige Zentrierungsmaßname dar.Also from DE 29 44 263 A1 is a solution with a Einpaßteil known. DE 29 44 263 A1 discloses a as Gear machine trained hydraulic machine with a housing that is liquid-tight by a lid is closed. In the lid a hole is formed, by a drive shaft for driving a gear led to the outside. In a radially expanded part the bore is a shaft seal arranged on the an appropriately inserted into the bore fitting part connects. This fitting part, which is used to center the entire gear machine on another machine part is attached by a plurality of screws on the housing cover and represents a total of a complex Zentrierungsmaßname represents.
Die US 2,883,213 zeigt eine Pumpe mit einem aus mehreren Platten gebildeten Pumpengehäuse, aus dem eine Welle durch eine Bohrung nach außen geführt ist, wobei die Bohrung mit einer Axialdichtung zur Dichtung des Gehäuses im Bereich des Durchtritts der Welle ausgebildet ist. Der nach außen geführte Bereich der Welle kann mit einer weiteren Baueinheit verbunden werden. Problematisch ist hierbei jedoch, dass keine Maßnahmen zur Zentrierung einer solchen weiteren Baueinheit gegenüber dem Pumpengehäuse vorgesehen sind.US 2,883,213 shows a pump with one of several Plate formed pump housing, from which a shaft through a bore is guided to the outside, wherein the bore with an axial seal for sealing the housing in the area the passage of the shaft is formed. The outward guided area of the shaft can with another unit get connected. However, the problem here is that no action to center such another Assembly are provided opposite the pump housing.
Ferner ist aus der DE 44 23 531 A1 ein Kommutatormotor bekannt, der eine Bürstentragplatte aufweist, die an einem Antriebsgehäuse einer Hydraulikpumpe angeflanscht ist. Die Bürstentragplatte ist von einer Rotorwelle durchgriffen, welche in das Antriebsgehäuse hineinragt. In dem Bereich, in dem die Bürstentragplatte an das Antriebsgehäuse grenzt, ist die Rotorwelle in einem Wälzlager gelagert. Das Wälzlager greift einerseits in eine Zentrierausnehmung der Bürstentragplatte und andererseits in eine Lagerausnehmung des Antriebsgehäuses ein.Furthermore, a commutator motor is known from DE 44 23 531 A1, having a brush holder plate, which on a Drive housing of a hydraulic pump is flanged. The Brush support plate is penetrated by a rotor shaft, which protrudes into the drive housing. In that area, in which the brush holder plate adjoins the drive housing, the rotor shaft is mounted in a rolling bearing. The rolling bearing on the one hand engages in a centering recess of the brush holder plate and on the other hand in a bearing recess of the Drive housing.
Eine hydraulische Arbeitsmaschine nach der Erfindung mit den Merkmalen nach dem Oberbegriff des Patentanspruches 1, bei welcher der Wellendichtring als Zentriereinrichtung ausgebildet ist, wobei der Wellendichtring einerseits in das Maschinengehäuse und andererseits in den Durchbruch der Trägerbaueinheit eintaucht, hat den Vorteil, daß das Maschinengehäuse auf einfache Weise mittels des Wellendichtrings gegenüber der Trägerbaueinheit zentrierbar ist, so daß beispielsweise die Welle und eine mit der Welle gekuppelte zweite Welle zuverlässig miteinander fluchten.A hydraulic working machine according to the invention the features according to the preamble of claim 1, in which the shaft seal as a centering device is formed, wherein the shaft seal on the one hand in the machine housing and on the other hand in the breakthrough of Carrier unit dips, has the advantage that the machine housing in a simple way by means of the shaft seal is centered relative to the carrier assembly, so for example, the shaft and one coupled to the shaft second wave reliably aligned with each other.
Die Erfindung nützt dabei zur Zentrierung ein ohnehin erforderliches Bauteil und macht den Einsatz kostenintensiver zusätzlicher Bauteile, wie eines an dem Maschinengehäuse ausgebildeten Einpasses, überflüssig.The invention uses for centering an already required anyway Component and makes the use more expensive additional components, such as one on the machine housing trained passport, superfluous.
Damit ergibt sich vorteilhafterweise eine Zentrierung, welche kostengünstig realisiert werden kann.This advantageously results in a centering, which can be realized inexpensively.
Die hydraulische Arbeitsmaschine nach der Erfindung kann in einer vorteilhaften Ausführung beispielsweise ein Pumpenaggregat darstellen, bei welchem eine als Zahnradpumpe ausgebildete Hydraulikpumpe an einem als Trägerbaueinheit dienenden Ventilblock befestigt ist und mittels eines die korrespondierende Baueinheit bildenden Elektromotors antreibbar ist. Der Elektromotor hat in üblicher Weise eine Abtriebswelle, die mit einer Antriebswelle der Hydraulikpumpe gekuppelt ist.The hydraulic working machine according to the invention can in an advantageous embodiment, for example, a pump unit represent, in which a trained as a gear pump Hydraulic pump on serving as a Trägerbaueinheit Valve block is attached and by means of a corresponding Building unit forming electric motor drivable is. The electric motor has in the usual way an output shaft, with a drive shaft of the hydraulic pump is coupled.
Damit bei einem derartigen Pumpenaggregat im Sinne der Erfindung gewährleistet ist, daß die beiden Wellen exakt miteinander fluchten, ist die Hydraulikpumpe mittels eines Wellendichtrings gegenüber dem Ventilblock zentriert, durch den die geführt sind.Thus, in such a pump unit in the context of the invention it is ensured that the two waves exactly with each other aligned, the hydraulic pump is by means of a Centered shaft seal against the valve block, through which are led.
Bei der hydraulischen Arbeitsmaschine nach der Erfindung kann es sich auch um einen Hydraulikmotor, wie einen Zahnradmotor, handeln. Die Welle bildet dann die Abtriebswelle des Motors.In the hydraulic working machine according to the invention it can also be a hydraulic motor, such as a gear motor, act. The shaft then forms the output shaft of the motor.
Der Teil des Maschinengehäuses, welcher einen ersten Bereich des Wellendichtrings in radialer Richtung begrenzt, kann beispielsweise ein dem Maschinengehäuse zugeordneter Pumpendeckel sein, und die einen zweiten Bereich des Wellendichtrings begrenzende Trägerbaueinheit kann ein Ventilblock sein.The part of the machine housing, which is a first area the shaft seal is limited in the radial direction, For example, an associated with the machine housing Pump cover, and a second area of the shaft seal limiting carrier assembly may be a valve block be.
Die Trägerbaueinheit kann beispielsweise auch von einem Gehäuse einer Antriebseinheit, wie einem Elektromotor, für eine Hydraulikpumpe gebildet sein. In diesem Falle taucht der Wellendichtring einerseits in das Gehäuse der Hydraulikpumpe und andererseits in das Gehäuse der Antriebseinheit ein und dient so der Zentrierung der Hydraulikpumpe gegenüber der Antriebseinheit.The carrier assembly may also be, for example, a housing a drive unit, such as an electric motor, for be formed a hydraulic pump. In this case, dives the shaft seal on the one hand in the housing of the hydraulic pump and on the other hand into the housing of the drive unit and thus serves to center the hydraulic pump opposite the drive unit.
In einer bevorzugten Ausführung der Erfindung kann der Wellendichtring als Dichtung zwischen dem Pumpengehäuse und dem Ventilblock vorgesehen sein. Die Dichtwirkung ist dabei insbesondere gewährleistet, wenn der Wellendichtring eine Gummiummantelung aufweist.In a preferred embodiment of the invention, the shaft seal as a seal between the pump housing and be provided the valve block. The sealing effect is here in particular, guaranteed when the shaft seal a Rubber sheath has.
Alternativ oder zusätzlich kann zur Dichtung des Durchbruches gegenüber der Umgebung des Maschinengehäuses zwischen dem Maschinengehäuse und der Trägerbaueinheit ein O-Ring angeordnet sein. Sofern der Wellendichtring eine Gummiummantelung aufweist, kann der O-Ring gegebenenfalls entfallen.Alternatively or additionally, the gasket of the breakthrough opposite the environment of the machine housing between the machine housing and the Trägerbaueinheit an O-ring be arranged. If the shaft seal is a rubber jacket optionally, the O-ring may be omitted.
Im Fall eines hydraulischen Pumpenaggregats der oben beschriebenen Art dichtet der O-Ring bzw. der Wellendichtring den als Kupplungsraum ausgebildeten Durchbruch, in dem die Abtriebswelle der Antriebseinheit und die Antriebswelle der Hydraulikpumpe miteinander gekuppelt sind, gegenüber dem Hydraulikölvorratsbehälter.In the case of a hydraulic pump unit of the above-described Type seals the O-ring or the shaft seal designed as a coupling space breakthrough in which the Output shaft of the drive unit and the drive shaft of Hydraulic pump are coupled together, opposite to the Hydraulic oil reservoir.
Weitere Vorteile und vorteilhafte Ausgestaltungen des Gegenstandes nach der Erfindung sind der Beschreibung, der Zeichnung und den Patentansprüchen entnehmbar.Further advantages and advantageous embodiments of the subject According to the invention, the description, the Drawing and claims removed.
Ein Ausführungsbeispiel der hydraulischen Arbeitsmaschine nach der Erfindung ist in der Zeichnung schematisch vereinfacht dargestellt und wird in der nachfolgenden Beschreibung näher erläutert. An embodiment of the hydraulic working machine according to the invention is schematically simplified in the drawing and will be described in the following description explained in more detail.
Die einzige Figur zeigt eine Hydraulikpumpe, die an einem Ventilblock befestigt ist.The sole FIGURE shows a hydraulic pump attached to a Valve block is attached.
Das in der Figur dargestellte Ausführungsbeispiel zeigt eine
hydraulische Arbeitsmaschine 1, die einen als Trägerbaueinheit
dienenden Ventilblock 2 sowie eine Hydraulikpumpe 3
umfaßt. Die Hydraulikpumpe 3 ist an dem Ventilblock 2 befestigt
und taucht in einen hier nicht dargestellten Druckmittelvorratsbehälter
ein, welcher über Verbindungsmittel 4
ebenfalls an dem Ventilblock 2 befestigt ist.The embodiment shown in the figure shows a
Hydraulic working machine 1, the one as Trägerbaueinheit
Die Hydraulikpumpe 3 ist vorliegend als Zahnradpumpe ausgebildet
und weist ein aus den Gehäuseteilen 5, 6 und 7 bestehendes
Maschinengehäuse, d.h. Pumpengehäuse, auf, wobei
das Gehäuseteil 7 als Pumpendeckel ausgebildet ist und an
den Ventilblock 2 angrenzt.The hydraulic pump 3 is presently designed as a gear pump
and has an existing from the
Die als Zahnradpumpe ausgebildete Hydraulikpumpe 3 ist über
eine Antriebswelle 8 antreibbar, welche den Gehäusedeckel 7
durchgreift und mit einem Kupplungsbereich 9 in einen als
Kupplungsraum ausgebildeten Durchbruch 10 des Ventilblocks
2 eintaucht. Der Kupplungsbereich 9 dient zur Kupplung mit
einem hier nicht näher dargestellten Elektromotor, der mittels
in Bohrungen 11 eingreifender Schrauben an dem Ventilblock
2 befestigbar ist. The trained as a gear pump hydraulic pump 3 is over
a
Der Elektromotor weist üblicherweise eine Abtriebswelle
auf, die über den Kupplungsbereich 9 mit der Antriebswelle
8 der Hydraulikpumpe 3 kuppelbar ist.The electric motor usually has an output shaft
on, via the
An der dem Ventilblock 2 zugewandten Seite ist an dem Pumpendeckel
7 eine die Antriebswelle 8 umschließende, ringförmige
Ausnehmung 12 ausgebildet, an deren Boden eine die
Antriebswelle 8 umschließende Zentrierscheibe 13 zur Führung
der Antriebswelle 8 angeordnet ist.On the side facing the
Des weiteren taucht in die Ausnehmung 12 ein Wellendichtring
14 ein, der mit seinem der Hydraulikpumpe 3 abgewandten
Ende in den Durchbruch 10 des Ventilblocks 2 eintaucht
und so zur Zentrierung der Hydraulikpumpe 3 gegenüber dem
Ventilblock 2 und damit gegenüber dem hier nicht dargestellten
Elektromotor dient.Furthermore, immersed in the
Dadurch, daß der Wellendichtring radial einerseits an den
Pumpendeckel 7, der dem Pumpengehäuse zugeordnet ist, und
andererseits radial an den Ventilblock 2 grenzt, ist sichergestellt,
daß die Antriebswelle 8 der Hydraulikpumpe 3
und die Abtriebswelle des Elektromotors miteinander fluchten,
so daß ein geringer Verschleiß des Kupplungsbereichs
gewährleistet ist und im Betrieb der hydraulischen Arbeitsmaschine
1 keine radialen Kräfte auf die Antriebswelle 8
ausgeübt werden.Characterized in that the shaft seal radially on the one hand to the
Zur Dichtung des Kupplungsraums 10 gegenüber dem Volumen
des nicht dargestellten Druckmittelvorratsbehälters ist
zwischen dem Pumpendeckel 7 und dem Ventilblock 2 ein
O-Ring 15 angeordnet. Auf diesen kann gegebenenfalls verzichtet
werden, wenn ein Wellendichtring 14 mit Gummiummantelung
eingesetzt wird, da dann der Wellendichtring 14 diese
Dichtfunktion übernimmt.To seal the
Es versteht sich, daß die Erfindung nicht auf das dargestellte Ausführungsbeispiel beschränkt ist. Vielmehr kann die Erfindung beispielsweise auch auf einen Zahnradmotor mit einer Abtriebswelle übertragen werden, die eine Trägerbaueinheit durchgreift und die mit einer korrespondierenden Welle einer anzutreibenden Baueinheit möglichst exakt fluchten muß.It is understood that the invention is not limited to the illustrated Embodiment is limited. Rather, it can For example, the invention also relates to a geared motor be transmitted to an output shaft, which is a carrier assembly goes through and with a corresponding one Shaft of a driven assembly as accurate as possible must be aligned.
Claims (3)
- A hydraulic working machine, particularly for conveying hydraulic oil, lubricating oil or the like, with at least one shaft (8) penetrating a machine housing (5, 6, 7) and a shaft seal ring (14), and with a support unit (2) adjacent to the machine casing (5, 6, 7) and having an opening (10), so that the shaft (8) can be connected to a corresponding unit, characterized in that the shaft seal ring (14) is provided as a centring device, with said shaft seal ring (14) reaching into the machine housing (5, 6, 7) on the one hand and into the opening (10) in the support unit (2) on the other.
- The hydraulic working machine according to claim 1, characterized in that the shaft seal ring (14) is provided as a seal between the machine housing (5, 6, 7) and the support unit (2).
- The hydraulic working machine according to one of claims 1 or 2, characterized in that an O-ring (15) is arranged between the machine housing (5, 6, 7) and the support unit (2).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10120711 | 2001-04-27 | ||
| DE2001120711 DE10120711A1 (en) | 2001-04-27 | 2001-04-27 | Hydraulic work machine |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1253322A2 EP1253322A2 (en) | 2002-10-30 |
| EP1253322A3 EP1253322A3 (en) | 2004-03-03 |
| EP1253322B1 true EP1253322B1 (en) | 2005-10-05 |
Family
ID=7682960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20020009463 Expired - Lifetime EP1253322B1 (en) | 2001-04-27 | 2002-04-25 | Hydraulic machine |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1253322B1 (en) |
| DE (2) | DE10120711A1 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2883213A (en) * | 1956-05-15 | 1959-04-21 | Rolf H W Kroekel | Pump |
| DE2944263A1 (en) * | 1979-11-02 | 1981-05-27 | Robert Bosch Gmbh, 7000 Stuttgart | Gear pump or motor - has drive shaft passing through bush in cover bore, bush acting as centralised mounting to external component |
| DE8006057U1 (en) * | 1980-03-06 | 1981-09-17 | Robert Bosch Gmbh, 7000 Stuttgart | GEAR MACHINE (PUMP OR HYDROMOTOR) |
| DE3035663A1 (en) * | 1980-09-20 | 1982-05-13 | Robert Bosch Gmbh, 7000 Stuttgart | GEAR MACHINE (PUMP OR MOTOR) |
-
2001
- 2001-04-27 DE DE2001120711 patent/DE10120711A1/en not_active Withdrawn
-
2002
- 2002-04-25 EP EP20020009463 patent/EP1253322B1/en not_active Expired - Lifetime
- 2002-04-25 DE DE50204431T patent/DE50204431D1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP1253322A3 (en) | 2004-03-03 |
| DE10120711A1 (en) | 2002-10-31 |
| DE50204431D1 (en) | 2006-02-16 |
| EP1253322A2 (en) | 2002-10-30 |
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