EP1231385B1 - Device for supply of hydraulic oil, lubricating oil or similar - Google Patents
Device for supply of hydraulic oil, lubricating oil or similar Download PDFInfo
- Publication number
- EP1231385B1 EP1231385B1 EP02002243A EP02002243A EP1231385B1 EP 1231385 B1 EP1231385 B1 EP 1231385B1 EP 02002243 A EP02002243 A EP 02002243A EP 02002243 A EP02002243 A EP 02002243A EP 1231385 B1 EP1231385 B1 EP 1231385B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve block
- pump
- plastic
- hydraulic
- storage container
- 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
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
- F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B23/00—Pumping installations or systems
- F04B23/02—Pumping installations or systems having reservoirs
- F04B23/021—Pumping installations or systems having reservoirs the pump being immersed in the reservoir
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/26—Supply reservoir or sump assemblies
Definitions
- the invention relates to a device for promoting Hydraulic oil, lubricating oil or the like according to that in the preamble of claim 1 defined in more detail.
- Such a device is known from practice and for example designed as a drive unit of a hydraulic system.
- the device can be used as a small hydraulic unit be carried out, which essentially from a reservoir for hydraulic oil, a pump, for example a gear pump, a so-called valve block, to which the pump is attached and which one Consumer connection for connecting a hydraulic consumer, such as a hydraulic cylinder or hydraulic motor and an electric motor to drive the pump consists.
- a hydraulic consumer such as a hydraulic cylinder or hydraulic motor and an electric motor to drive the pump consists.
- the connection of the hydraulic consumer can if necessary, take place via a controller, which is essentially consists of valves and their interconnection.
- a controller which is essentially consists of valves and their interconnection.
- Such a device is, for example, from the document EP 1 008 750 known.
- valve block is in the known devices for Promotion of fluids of the type mentioned in the introduction in usually made of die-cast aluminum or forged aluminum.
- valve blocks A disadvantage of such known valve blocks is that in manufacturing there is a need to use the same to machine it with adjacent components to be able to connect. However, this is complex and costly, which has a corresponding negative impact on the cost of Precipitation device.
- valve block for pumping hydraulic oil, Lubricating oil or the like with the features according to the preamble of claim 1, in which the Valve block at least partially a molded plastic part in which at least one further component of the device is encapsulated by plastic, in contrast the advantage that the at least one other component of the Device in a plastic injection mold in a simple way with the valve block.
- valve block can be integrated in one Area mechanically and / or hydraulically less loaded Areas have recesses.
- polluted areas can also have metallic reinforcements in the valve block be encapsulated by plastic, for example can be provided with ribs.
- valve block and adjacent to or integrated into this Components form a structural unit, which in the device can be easily assembled.
- the pump flange is the at least one further component of the device.
- the pump flange is then overmolded with plastic and forms one with the valve block Unit.
- valve block it is, for example, mechanical or hydraulic highly loaded suction elements.
- Components of this type can, for example, a connector for a consumer or a threaded sleeve, for example for Engagement of a fastening screw of a drive motor for the pump.
- a metallic connector for a consumer this can be done in one also metallic injected into the valve block Guide part to be arranged.
- the valve block is preferably also in the area of Anchoring of the plastic storage container.
- the in plastic present in this area creates the possibility the valve block in a cost-effective manner by means of a To connect the bayonet lock to the storage container.
- an aluminum wall in this area such as they can be found in the devices according to the prior art would be such a type of connection with a bayonet lock in common applications, such as with a small hydraulic unit, with too high manufacturing costs connected.
- FIGS. 1 and 2 show a small hydraulic unit 1 shown, the essential components of a pressure medium reservoir 2, one for example as a gear pump trained hydraulic pump 3, a so-called Valve block 4 and an electric motor 5 for driving the Has hydraulic pump 3.
- a pressure medium reservoir 2 one for example as a gear pump trained hydraulic pump 3, a so-called Valve block 4 and an electric motor 5 for driving the Has hydraulic pump 3.
- valve block 4 which in the present case is a plastic injection molded part is formed and, if necessary, metallic reinforcements may include controls for Control of the hydraulic small unit 1 and is used for attachment other components of the small hydraulic unit 1.
- the hydraulic pump 3 essentially comprises three housing parts 6, 7 and 8, wherein the housing part 8 is a pump flange represents for fastening the pump to the valve block 4.
- valve block 4 is in the range of one Recess 12 from a likewise designed as an insert so-called high-pressure insert 11, which one made of a metallic material, for example aluminum, manufactured connector for a not shown here hydraulic consumers, such as a hydraulic cylinder, is.
- high-pressure insert 11 one made of a metallic material, for example aluminum, manufactured connector for a not shown here hydraulic consumers, such as a hydraulic cylinder, is.
- the high-pressure insert 11 has a small hydraulic unit inside 1 lying end 18, which in the to the valve block 4 adjacent pump flange 8 of the hydraulic pump 3 protrudes. In this area is between high pressure use 11 and the pump flange 8 are designed as an O-ring Seal 13 arranged.
- the plate-like pump flange 8, the high pressure insert 11 and the threaded inserts 10 are in the Valve block 4 injected or overmolded with plastic. These components are thus firmly connected to the valve block and form a structural unit with the latter.
- the valve block 4 is also in the area of the anchorage of the pressure medium reservoir made of plastic 2 made of plastic.
- the anchorage of the pressure fluid reservoir 2 on the valve block 4 is a bayonet lock 14 executed.
- For sealing the storage container 2 compared to the environment is in the area of the bayonet catch 14 additionally one designed as an O-ring Seal 15 arranged.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Details Of Reciprocating Pumps (AREA)
Description
Die Erfindung geht von einer Vorrichtung zur Förderung von
Hydrauliköl, Schmieröl oder dergleichen gemäß der im Oberbegriff
des Patentanspruches 1 näher definierten Art aus.The invention relates to a device for promoting
Hydraulic oil, lubricating oil or the like according to that in the preamble
of
Eine solche Vorrichtung ist aus der Praxis bekannt und beispielsweise
als Antriebseinheit eines Hydrauliksystems ausgebildet.
In diesem Fall kann die Vorrichtung als Hydraulikkleinaggregat
ausgeführt sein, welches im wesentlichen
aus einem Vorratsbehälter für Hydrauliköl, einer Pumpe,
beispielsweise einer Zahnradpumpe, einem sogenannten Ventilblock,
an dem die Pumpe befestigt ist und an welchem ein
Verbraucheranschluß zum Anschluß eines hydraulischen Verbrauchers,
wie einem Hydrozylinder oder Hydromotors, ausgebildet
ist, sowie einem Elektromotor zum Antrieb der Pumpe
besteht. Der Anschluß des hydraulischen Verbrauchers kann
gegebenenfalls über eine Steuerung erfolgen, die im wesentlichen
aus Ventilen und deren Verknüpfung untereinander besteht.
Eine solche Vorrichtung ist beispielweise aus
der Druckschrift EP 1 008 750 bekannt.Such a device is known from practice and for example
designed as a drive unit of a hydraulic system.
In this case, the device can be used as a small hydraulic unit
be carried out, which essentially
from a reservoir for hydraulic oil, a pump,
for example a gear pump, a so-called valve block,
to which the pump is attached and which one
Consumer connection for connecting a hydraulic consumer,
such as a hydraulic cylinder or hydraulic motor
and an electric motor to drive the pump
consists. The connection of the hydraulic consumer can
if necessary, take place via a controller, which is essentially
consists of valves and their interconnection.
Such a device is, for example, from
the
Der Ventilblock ist bei den bekannten Vorrichtungen zur Förderung von Fluiden nach der einleitend genannten Art in der Regel aus Aluminium-Druckguß oder Schmiedealuminium gefertigt.The valve block is in the known devices for Promotion of fluids of the type mentioned in the introduction in usually made of die-cast aluminum or forged aluminum.
Nachteilig ist bei derartigen bekannten Ventilblocks, daß bei der Herstellung die Notwendigkeit besteht, denselben spanend zu bearbeiten, um ihn mit angrenzenden Bauteilen verbinden zu können. Dies ist jedoch aufwendig und kostenintensiv, was sich entsprechend negativ auf die Kosten der Vorrichtung niederschlägt.A disadvantage of such known valve blocks is that in manufacturing there is a need to use the same to machine it with adjacent components to be able to connect. However, this is complex and costly, which has a corresponding negative impact on the cost of Precipitation device.
Die erfindungsgemäße Vorrichtung zur Förderung von Hydrauliköl,
Schmieröl oder dergleichen mit den Merkmalen nach
dem Oberbegriff des Patentanspruches 1, bei welcher der
Ventilblock zumindest teilweise ein Kunststoffspritzteil
ist, in dem zumindest ein weiteres Bauteil der Vorrichtung
von Kunststoff umspritzt angeordnet ist, hat demgegenüber
den Vorteil, daß das zumindest eine weitere Bauteil der
Vorrichtung in einer Kunststoffspritzform auf einfache Weise
mit dem Ventilblock verfügt ist.The device according to the invention for pumping hydraulic oil,
Lubricating oil or the like with the features according to
the preamble of
Dies führt zu einer festen Verbindung zwischen dem Ventilblock und dem weiteren Bauteil, wobei vorteilhafterweise weitere Montageschritte sowie Befestigungsmittel für das mit dem Ventilblock zu verbindenden Bauteil entfallen. Damit bewirkt die erfindungsgemäße Lösung wiederum eine signifikante Kosteneinsparung bei der Herstellung der Vorrichtung.This leads to a firm connection between the valve block and the further component, advantageously further assembly steps and fasteners for the components to be connected to the valve block are eliminated. In order to the solution according to the invention in turn causes a significant one Cost savings in the manufacture of the device.
Zur Einsparung von Kunststoff kann der Ventilblock in einem Bereich mechanisch und/oder hydraulisch gering belasteter Bereiche Aussparungen aufweisen. In belasteten Bereichen können auch metallische Verstärkungen in den Ventilblock von Kunststoff umspritzt angeordnet sein, wobei dieser beispielsweise mit Rippen versehen sein kann.To save plastic, the valve block can be integrated in one Area mechanically and / or hydraulically less loaded Areas have recesses. In polluted areas can also have metallic reinforcements in the valve block be encapsulated by plastic, for example can be provided with ribs.
Der Kern der Erfindung liegt mithin darin, daß der Ventilblock und an diesen angrenzende bzw. in diesen integrierte Bauteile eine Baueinheit bilden, welche in der Vorrichtung leicht montiert werden kann.The essence of the invention is therefore that the valve block and adjacent to or integrated into this Components form a structural unit, which in the device can be easily assembled.
Nach einer bevorzugten Ausführungsform der Vorrichtung nach der Erfindung ist der Pumpenflansch das mindestens eine weitere Bauteil der Vorrichtung. Der Pumpenflansch ist dann mit Kunststoff umspritzt und bildet mit dem Ventilblock eine Baueinheit.According to a preferred embodiment of the device of the invention, the pump flange is the at least one further component of the device. The pump flange is then overmolded with plastic and forms one with the valve block Unit.
Vorteilhaft ist es auch, wenn Einlegeteile in dem Ventilblock umspritzt angeordnet sind. Bei solchen Einlegeteilen handelt es sich beispielsweise um mechanisch oder hydraulisch hochbelastete sauelemente. Bauelemente dieser Art können beispielsweise ein Anschlußstück für einen Verbraucher oder auch eine Gewindehülse, die beispielsweise zum Eingriff einer Befestigungsschraube eines Antriebsmotors für die Pumpe dient, sein. Im Falle eines metallischen Anschlußstückes für einen Verbraucher kann dieses in einem ebenfalls in den Ventilblock eingespritzten metallischen Führungsteil angeordnet sein.It is also advantageous if inserts in the valve block overmolded. With such inserts it is, for example, mechanical or hydraulic highly loaded suction elements. Components of this type can, for example, a connector for a consumer or a threaded sleeve, for example for Engagement of a fastening screw of a drive motor for the pump. In the case of a metallic connector for a consumer this can be done in one also metallic injected into the valve block Guide part to be arranged.
Der Ventilblock besteht vorzugsweise auch im Bereich der Verankerung des Vorratsbehälters aus Kunststoff. Der in diesem Bereich vorliegende Kunststoff schafft die Möglichkeit, den Ventilblock auf kostengünstige Weise mittels eines Bajonettverschlusses mit dem Vorratsbehälter zu verbinden. Im Falle einer Aluminiumwandung in diesem Bereich, wie sie bei den Vorrichtungen nach dem Stand der Technik anzutreffen ist, wäre eine solche Verbindungsart mit einem Bajonettverschluß bei gängigen Anwendungen, wie beispielsweise bei einem Hydraulikkleinaggregat, mit zu hohen Herstellungskosten verbunden.The valve block is preferably also in the area of Anchoring of the plastic storage container. The in plastic present in this area creates the possibility the valve block in a cost-effective manner by means of a To connect the bayonet lock to the storage container. In the case of an aluminum wall in this area, such as they can be found in the devices according to the prior art would be such a type of connection with a bayonet lock in common applications, such as with a small hydraulic unit, with too high manufacturing costs connected.
Weitere Vorteile und vorteilhafte Ausgestaltungen des Gegenstandes nach der Erfindung sind der Beschreibung, der Zeichnung und den Patentansprüchen entnehmbar.Further advantages and advantageous configurations of the object according to the invention are the description of Drawing and the claims can be found.
Ein Ausführungsbeispiel der Vorrichtung nach der Erfindung ist in der Zeichnung schematisch vereinfacht dargestellt und wird in der nachfolgenden Beschreibung näher erläutert.An embodiment of the device according to the invention is shown schematically simplified in the drawing and is explained in more detail in the following description.
Es zeigen
In den Figuren 1 und 2 ist ein Hydraulikkleinaggregat 1
dargestellt, das als wesentliche Baueinheiten einen Druckmittelvorratsbehälter
2, eine beispielsweise als Zahnradpumpe
ausgebildete Hydraulikpumpe 3, einen sogenannten
Ventilblock 4 sowie einen Elektromotor 5 zum Antrieb der
Hydraulikpumpe 3 aufweist.FIGS. 1 and 2 show a small
Der Ventilblock 4, der vorliegend als ein Kunststoffspritzteil
ausgebildet ist und gegebenenfalls metallische Verstärkungen
enthalten kann, umfaßt Steuereinrichtungen zur
Steuerung des Hydraulikkleinaggregats 1 und dient zur Befestigung
weiterer Bauteile des Hydraulikkleinaggregats 1.The
Die Hydraulikpumpe 3 umfaßt im wesentlichen drei Gehäuseteile
6, 7 und 8, wobei das Gehäuseteil 8 einen Pumpenflansch
zur Befestigung der Pumpe an dem Ventilblock 4 darstellt.The
Auf der der.Hydraulikpumpe 3 abgewandten Seite des Ventilblocks
4 schließt sich an letzteren der Elektromotor 5
an. Der Elektromotor 5, der über eine Antriebswelle 17 die
Hydraulikpumpe 3 antreibt, ist mit Hilfe von Schrauben 9,
welche den Motorblock axial durchgreifen, an dem Ventilblock
4 befestigt. Die Schrauben 9 greifen hierzu in ein
Innengewinde hülsenartig ausgebildeter Einlegeteile 10 des
Ventilblocks 4 ein.On the side of the valve block facing away from the
In radialer Richtung ist der Ventilblock 4 im Bereich einer
Ausnehmung 12 von einem ebenfalls als Einlegeteil ausgebildeten
sogenannten Hochdruckeinsatz 11 durchgriffen, welcher
ein aus einem metallischen Werkstoff, beispielsweise Aluminium,
gefertigtes Anschlußstück für einen hier nicht dargestellten
hydraulischen Verbraucher, wie einem Hydrozylinder,
ist.In the radial direction, the
Der Hochdruckeinsatz 11 hat ein innerhalb des Hydrdaulikkleinaggregats
1 liegendes Ende 18, das in den an den Ventilblock
4 angrenzenden Pumpenflansch 8 der Hydraulikpumpe
3 hineinragt. In diesem Bereich ist zwischen dem Hochdruckeinsatz
11 und dem Pumpenflansch 8 eine als O-Ring ausgebildete
Dichtung 13 angeordnet.The high-
Der plattenartig ausgebildete Pumpenflansch 8, der Hochdruckeinsatz
11 sowie die Gewindeeinsätze 10 sind in dem
Ventilblock 4 eingespritzt bzw. mit Kunststoff umspritzt.
Diese Bauteile sind dadurch mit dem Ventilblock fest verbunden
und bilden mit letzterem eine Baueinheit.The plate-
Der Ventilblock 4 ist auch im Bereich der Verankerung des
aus Kunststoff bestehenden Druckmittelvorratsbehälters 2
aus Kunststoff ausgebildet. Die Verankerung des Druckmittelvorratsbehälters
2 an dem Ventilblock 4 ist als Bajonettverschluß
14 ausgeführt. Zur Dichtung des Vorratsbehälters
2 gegenüber der Umgebung ist im Bereich des Bajonettverschlusses
14 zusätzlich eine als O-Ring ausgebildete
Dichtung 15 angeordnet.The
Claims (8)
- Device for supplying hydraulic oil, lubricating oil or the like, at least comprising a storage container (2) and a pump (3) with a pump flange (8) which is fastened to a valve block (4) on which the storage container (2) is secured, characterized in that the valve block (4) is, at least in part, an injection-moulded plastic part in which at least one further component (8, 10, 11) of the device is arranged encapsulated by plastic by injection moulding.
- Device according to Claim 1, characterized in that the at least one further component is the pump flange (8).
- Device according to Claim 1 or 2, characterized in that the at least one further component of the device is an insert part (10, 11).
- Device according to Claim 3, characterized in that the insert part is a connection piece (11) for a consumer.
- Device according to Claim 4, characterized in that the connection piece (11) is guided in a guide part which is encapsulated by plastic in the valve block (4) by injection moulding.
- Device according to Claim 3, characterized in that the insert part is a threaded sleeve (10).
- Device according to Claim 6, characterized in that a fastening screw (9) of a driving motor (5) for the pump (3) engages in the threaded sleeve (10).
- Device according to one of Claims 1 to 7, characterized in that the storage container (2) is manufactured from plastic, and the securing of the storage container (2) on the valve block (4) is designed as a bayonet catch (14).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10105450 | 2001-02-07 | ||
| DE10105450A DE10105450A1 (en) | 2001-02-07 | 2001-02-07 | Device for conveying hydraulic oil or lubricating oil, has a pump with a pump flange fastened on the valve block for anchoring of the reservoir onto it |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1231385A1 EP1231385A1 (en) | 2002-08-14 |
| EP1231385B1 true EP1231385B1 (en) | 2004-01-14 |
Family
ID=7673104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02002243A Expired - Lifetime EP1231385B1 (en) | 2001-02-07 | 2002-01-30 | Device for supply of hydraulic oil, lubricating oil or similar |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1231385B1 (en) |
| DE (2) | DE10105450A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2847008B1 (en) * | 2002-11-07 | 2006-04-21 | Ksb Sas | VALVE SYSTEM FOR USE IN A SHIP |
| DE20310257U1 (en) * | 2003-07-03 | 2003-11-06 | Trw Fahrwerksyst Gmbh & Co | Hydraulic unit, especially for power steering system of motor vehicle, has tank fitted in neck of intermediate housing with protrusion formed on outer wall of tank and engaging in opposite lying first slot formed in inner wall of neck |
| DE102006021682A1 (en) * | 2006-05-10 | 2007-11-15 | Jungheinrich Ag | hydraulic power unit |
| DE102006042619A1 (en) * | 2006-09-04 | 2008-03-20 | Voith Turbo H + L Hydraulic Gmbh & Co. Kg | Machine tool device for hydraulic system, has hydraulic pumps driven by electromotor, where hydraulic pumps are arranged in space that is limited by intermediate units and auxiliary units |
| DE102008058282A1 (en) * | 2008-11-20 | 2010-05-27 | Wilhelm Karmann Gmbh | Hydraulic unit |
| EP2746590B1 (en) * | 2012-12-19 | 2016-03-09 | Bucher Hydraulics S.p.A. | Power unit to move at least a hydraulic actuator |
| DE102015008837A1 (en) * | 2015-07-08 | 2017-01-12 | Hydac Fluidtechnik Gmbh | hydraulic power unit |
| CN107363792B (en) * | 2017-07-06 | 2023-09-19 | 浙江工业大学 | Electric hydraulic breaker with hand-held replaceable working head |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5542823A (en) * | 1995-06-14 | 1996-08-06 | Applied Power Inc. | Reservoir body for a radial plunger pump |
| EP1008750A1 (en) * | 1998-12-07 | 2000-06-14 | Robert Bosch Gmbh | Compact hydraulic power unit |
-
2001
- 2001-02-07 DE DE10105450A patent/DE10105450A1/en not_active Withdrawn
-
2002
- 2002-01-30 EP EP02002243A patent/EP1231385B1/en not_active Expired - Lifetime
- 2002-01-30 DE DE50200204T patent/DE50200204D1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE10105450A1 (en) | 2002-08-08 |
| EP1231385A1 (en) | 2002-08-14 |
| DE50200204D1 (en) | 2004-02-19 |
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