EP1290344A1 - Portable hydraulic pump unit - Google Patents

Portable hydraulic pump unit

Info

Publication number
EP1290344A1
EP1290344A1 EP01953775A EP01953775A EP1290344A1 EP 1290344 A1 EP1290344 A1 EP 1290344A1 EP 01953775 A EP01953775 A EP 01953775A EP 01953775 A EP01953775 A EP 01953775A EP 1290344 A1 EP1290344 A1 EP 1290344A1
Authority
EP
European Patent Office
Prior art keywords
hydraulic pump
pump unit
unit according
housing
reservoir
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.)
Withdrawn
Application number
EP01953775A
Other languages
German (de)
French (fr)
Inventor
Carsten Sauerbier
Uwe Kirchner
Heinz Heller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lukas Hydraulik GmbH
Original Assignee
Lukas Hydraulik GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Lukas Hydraulik GmbH filed Critical Lukas Hydraulik GmbH
Publication of EP1290344A1 publication Critical patent/EP1290344A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B23/00—Pumping installations or systems
    • F04B23/02—Pumping installations or systems having reservoirs
    • F04B23/025—Pumping installations or systems having reservoirs the pump being located directly adjacent the reservoir
    • F04B23/026—Pumping installations or systems having reservoirs the pump being located directly adjacent the reservoir a pump-side forming a wall of the reservoir
    • 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
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • 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
    • F04B23/023—Pumping installations or systems having reservoirs the pump being immersed in the reservoir only the pump-part being immersed, the driving-part being outside the reservoir
    • 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
    • F04C11/008—Enclosed motor pump units
    • 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
    • F04C15/0042—Systems for the equilibration of forces acting on the machines or pump
    • F04C15/0049—Equalization of pressure pulses

Definitions

  • the present invention relates to a portable hydraulic pump unit with a housing, a pump, a drive motor for the pump, in particular in the form of an electric drive motor and a reservoir for hydraulic fluid.
  • Portable hydraulic pump units are already known from the prior art. They are used to work certain tools such.
  • Conventional hydraulic pump units are constructed in such a way that they are carried by means of a handle and placed on the ground at the place of use.
  • they have the disadvantage that the freedom of movement of the operator is adversely affected because the operator has to change the position of the hydraulic pump unit each time the position is changed.
  • the technical problem is therefore that conventional hydraulic pump units - despite their portability - ensure inadequate handling.
  • the object of the present invention is to provide a portable hydraulic pump unit with considerably improved handling.
  • Hydraulic pump unit solved in that an elongated housing is provided, which has a tubular shape. This makes it possible to in the hydraulic pump unit on the back of the respective operator Positioning or transporting conventional carrying aids for tanks, especially tanks of respiratory devices.
  • the housing has a point-symmetrical shape, as seen in cross-section, in particular circular, square, triangular or polygonal shape.
  • the circular shape is particularly preferred.
  • the outer diameter of the housing is expediently in the range from 150 mm to 220 mm.
  • a handle recessed under the plane of the face is provided on at least one face, preferably on both faces.
  • the handle (s) therefore do not affect the manageability and storage capability of the hydraulic pump unit.
  • the carrying handle is expediently located in the interior of a closure cover which extends into the housing.
  • the carrying handle serves on the one hand as a carrying aid and on the other hand as a handle for unscrewing the cover.
  • a further embodiment of the present invention is characterized in that the housing comprises two housing parts, a valve plate is further provided and the valve plate is arranged between the two housing parts.
  • valve plate is also a support plate for certain components of the hydraulic pump unit such as. B. the drive motor, the pump and the two housing parts.
  • the reservoir is equipped with a flexible wall or at least with a flexible membrane, as a result of which volume differences in the tank due to operation can be compensated for.
  • the flexible wall can expediently be designed as a cylindrical wall, however, provided with a corrugated outer contour.
  • the corrugation of the outer contour enables simplified volume compensation.
  • the reservoir can also have a rigid volume and at the same time be provided with ventilation and / or ventilation.
  • the pump and the reservoir can be arranged directly adjacent to one another, as a result of which supply lines can be avoided and the construction can consequently be simplified.
  • An embodiment of the invention is further characterized in that at least over a portion of the length of the housing, preferably over at least half the length, no parts projecting beyond the outer contour of the housing are provided. As a result, the usability of the hydraulic pump unit in the relevant holders is facilitated. Except of these are only possibly protruding fastening parts over the outer contour. This applies in particular to the one housing part which is located on the underside of the valve plate.
  • Switches for operating the hydraulic pump unit and or control elements are expediently provided in the bottom of the preferably upper sealing cover and therefore do not protrude either.
  • the two housing parts are preferably of unequal length.
  • the one housing part serves to accommodate the drive motor, whereas the other housing part with a shorter length is intended to accommodate the pump, the reservoir and the sealing cover, if necessary with a switch and / or control elements.
  • the other housing part with a shorter length is intended to accommodate the pump, the reservoir and the sealing cover, if necessary with a switch and / or control elements.
  • a closure cover preferably the lower closure cover, is expediently designed as a quick release closure, i. H. can be removed by simply turning if necessary.
  • a closure cover preferably the upper closure cover, can expediently be provided as a fixed closure cover.
  • An embodiment of the present invention is characterized in that at least one connection element is positioned on the valve plate. If the hydraulic pump unit is used for a double-acting cylinder system, two connection elements are alternatively provided in the area of the valve plate, one for the pressure line and the other for the return line. A practical embodiment of the hydraulic pump unit according to the invention is explained in more detail below with reference to drawing figures. Show it:
  • Fig. 1 a longitudinal sectional view through the complete
  • Reference number 1 in FIG. 1 designates the hydraulic pump unit according to the invention in its entirety. It comprises a slim, elongated cylindrical housing 2, which is closed on the lower end side (left side of FIG. 1) and on the upper end side (right side of FIG. 1) by means of a closure cover 9 and 10, respectively.
  • the hydraulic pump unit therefore has the appearance of a cylindrical tube which contains all the functional units.
  • the housing 2 expediently has an outer diameter of 150 mm to 220 mm. However, other dimensions are also possible depending on the application.
  • the housing is constructed from two housing parts 3 and 4, which are supported by a valve plate 11 arranged between them. Due to its disc-like shape, the valve plate 11 completes the entire housing, so to speak.
  • various function valves such as. B. a pressure switch valve (low pressure high pressure, pressure relief valve and pressure relief valve) not shown in detail.
  • connection element 18 for the connection on the valve plate 11 provided for the tool. If necessary, two connection elements 18 can also be provided on the valve plate 11 for a pressure line and return line in double-acting systems.
  • the pump 5 Directly on the top of the valve plate 11 is the pump 5, which is driven by a drive motor 6 arranged on the opposite side of the valve plate 11, in particular an electric drive motor.
  • An accumulator 16 is located in the second housing part 3 between the sealing cover 9 and the drive motor 6.
  • the accumulator 16 can also be provided outside the hydraulic pump unit, if required.
  • the reservoir 13 for the hydraulic fluid i. H. the hydraulic tank.
  • the wall of the reservoir is designed in the form of a flexible wall 12 in order to be able to compensate for volume differences within the reservoir which occur due to the operation.
  • the flexible wall 12 is provided with a corrugation around the cylinder, which facilitates volume compensation.
  • the closure cap 9 mentioned at the beginning can be screwed in or unscrewed as a manually operated quick-release fastener.
  • the handle 7 sunk into the housing 2 over the end face plane.
  • the rechargeable battery 16 is easily accessible for this quick-release fastener.
  • the lower housing part 3 receiving the drive motor 6 and the accumulator 16 is longer than the further, upper housing part 4.
  • the opposite upper closure cover 10 is rigidly fastened in the housing 2. He also has a handle 8, which is recessed inward over the end face plane.
  • a switching device 14 for operating the hydraulic pump unit 1 and a control element (display) 15 are arranged on the bottom of the closure cover 10. Furthermore, there is an external charging socket 19 for external energy, an electrical circuit breaker 20 and a mains charging socket 21 for the accumulator 16 in the area of the bottom of the closure lid 10.
  • the hydraulic pump unit according to the invention ensures, on the one hand, reliable protection of all functional units within the elongated, cylindrical housing, on the other hand, the hydraulic pump unit is easy to handle and has the particular advantage that it can be found in receptacles of conventional carrying aids for tanks, in particular tanks of breathing apparatus, which are usually on the back the operator can be carried.
  • the operator thus always has the hydraulic pump unit with him and can carry out work without having to change the position of the hydraulic pump unit.
  • the present invention therefore represents a very special amount in the relevant technical field.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)

Abstract

The invention relates to a portable hydraulic pump unit (1) comprising a housing (2), a pump (5), a drive motor (6) for the pump (5), in particular in the form of an electric drive motor, in addition to a reservoir (13) for hydraulic fluid. According to the invention, the housing (2) is tubular and (when viewed in cross-section) point-symmetrical, e.g. cylindrical, square, triangular or polygonal. The advantage of the hydraulic pump unit is that it can be positioned and transported in the receptacles of conventional portable tank carriers, in particular for the tanks of protective breathing apparatus.

Description

BESCHREIBUNG DESCRIPTION
Tragbare HydraulikpumpeneinheitPortable hydraulic pump unit
Die vorliegende Erfindung betrifft eine tragbare Hydraulikpumpeneinheit mit einem Gehäuse, einer Pumpe, einem Antriebsmotor für die Pumpe, insbesondere in Form eines elektrischen Antriebsmotors sowie einem Reservoir für Hydraulikflüssigkeit.The present invention relates to a portable hydraulic pump unit with a housing, a pump, a drive motor for the pump, in particular in the form of an electric drive motor and a reservoir for hydraulic fluid.
Tragbare Hydraulikpumpeneinheiten sind bereits aus dem Stand der Technik bekannt. Sie dienen dazu, bestimmte Arbeitswerkzeuge wie z. B. Schneidegeräte oder Spreizer für den Rettungseinsatz vor Ort zu betätigen. Herkömmliche Hydraulikpumpeneinheiten sind derart aufgebaut, daß sie mittels eines Handgriffs getragen und an dem Ort des Einsatzes am Boden abgestellt werden. Sie haben allerdings den Nachteil, daß hierdurch die Bewegungsfreiheit der Bedienungsperson nachteilig beeinträchtigt wird, da diese die Hydraulikpumpeneinheit beim Positionswechsel jeweils in ihrer Lage verändern muß. Das technische Problem besteht folglich darin, daß herkömmliche Hydraulikpumpeneinheiten - trotz ihrer Tragbarkeit - ein nur unzureichendes Handling gewährleisten.Portable hydraulic pump units are already known from the prior art. They are used to work certain tools such. B. Operate cutters or spreaders for rescue operations on site. Conventional hydraulic pump units are constructed in such a way that they are carried by means of a handle and placed on the ground at the place of use. However, they have the disadvantage that the freedom of movement of the operator is adversely affected because the operator has to change the position of the hydraulic pump unit each time the position is changed. The technical problem is therefore that conventional hydraulic pump units - despite their portability - ensure inadequate handling.
Die Aufgabe der vorliegenden Erfindung besteht darin eine tragbare Hydraulikpumpeneinheit mit einem erheblich verbesserten Handling zur Verfügung zu stellen.The object of the present invention is to provide a portable hydraulic pump unit with considerably improved handling.
Diese Aufgabe wird bei der gattungsgemäßen, vorerwähntenThis task is in the generic, aforementioned
Hydraulikpumpeneinheit dadurch gelöst, daß ein längliches Gehäuse vorgesehen ist, welches eine rohrartige Form besitzt. Hierdurch wird es möglich, die Hydraulikpumpeneinheit am Rücken der jeweiligen Bedienungsperson in Aufhahmen herkömmlicher Tragehilfen für Tanks insbesondere Tanks von Atmungsgeräten positionieren bzw. transportieren.Hydraulic pump unit solved in that an elongated housing is provided, which has a tubular shape. This makes it possible to in the hydraulic pump unit on the back of the respective operator Positioning or transporting conventional carrying aids for tanks, especially tanks of respiratory devices.
In vorteilhafter Weise besitzt das Gehäuse - im Querschnitt gesehen - eine punktsymmetrische Form, insbesondere kreisrunde, quadratische, dreieckige oder vieleckige Form. Besonders bevorzugt davon ist die kreisrunde Form.Advantageously, the housing has a point-symmetrical shape, as seen in cross-section, in particular circular, square, triangular or polygonal shape. The circular shape is particularly preferred.
Zweckmäßigerweise liegt hierzu der Außendurchmesser des Gehäuses im Bereich von 150 mm bis 220 mm.For this purpose, the outer diameter of the housing is expediently in the range from 150 mm to 220 mm.
Zur Gewährleistung einer guten Handhabung und Transportierbarkeit ist gemäß einer weiteren Ausgestaltung der vorliegenden Erfindung an mindestens einer Stirnseite, vorzugsweise an beiden Stirnseiten eine unter die Stirnseitenebene versenkter Tragegriff vorgesehen. Der oder die Tragegriffe) beeinträchtigen demzufolge die Handhabbarkeit und Lagerungsfahigkeit der Hydraulikpumpeneinheit nicht.In order to ensure good handling and portability, according to a further embodiment of the present invention, a handle recessed under the plane of the face is provided on at least one face, preferably on both faces. The handle (s) therefore do not affect the manageability and storage capability of the hydraulic pump unit.
Zweckmäßigerweise befindet sich der Tragegriff im Inneren eines sich in das Gehäuse hineinerstreckenden Verschlußdeckels. Der Tragegriff dient hierbei einerseits als Tragehilfe andererseits als Griff für das Herausdrehen des Verschlußdeckels.The carrying handle is expediently located in the interior of a closure cover which extends into the housing. The carrying handle serves on the one hand as a carrying aid and on the other hand as a handle for unscrewing the cover.
Eine weitere Ausgestaltung der vorliegenden Erfindung ist darin gekennzeichnet, daß das Gehäuse zwei Gehäuseteile umfaßt, weiterhin eine Ventilplatte vorgesehen ist und die Ventilplatte zwischen den beiden Gehäuseteilen angeordnet ist.A further embodiment of the present invention is characterized in that the housing comprises two housing parts, a valve plate is further provided and the valve plate is arranged between the two housing parts.
Daraus resultiert eine verbesserte Zugänglichkeit des Gehäuseinneren beidseitig zur Ventilplatte, da die Ventilplatte sozusagen eine Trennebene des Gehäuses bildet. Dies ist gerade bei der angestrebten, schlanken Form des Gehäuses ein besonderer Vorteil.This results in improved accessibility of the interior of the housing on both sides to the valve plate, since the valve plate is, so to speak, a parting plane of the housing forms. This is a particular advantage, especially in the case of the slim design of the housing.
Zweckmäßigerweise ist die Ventilplatte gleichzeitig Trageplatte für bestimmte Bauteile der Hydraulilφumpeneinheit wie z. B. des Antriebsmotors, der Pumpe sowie der beiden Gehäuseteile.Advantageously, the valve plate is also a support plate for certain components of the hydraulic pump unit such as. B. the drive motor, the pump and the two housing parts.
Zweckmäßig ist es weiterhin, den Antriebsmotor, die Pumpe sowie das Reservoir für die Hydraulikflüssigkeit axial hintereinander anzuordnen.It is also expedient to arrange the drive motor, the pump and the reservoir for the hydraulic fluid axially one behind the other.
Gemäß einer Ausgestaltung der Erfindung ist das Reservoir mit einer flexiblen Wand oder zumindest mit einer flexiblen Membran ausgestattet, wodurch betriebsbedingte Volumenunterschiede im Tank ausgeglichen werden können.According to one embodiment of the invention, the reservoir is equipped with a flexible wall or at least with a flexible membrane, as a result of which volume differences in the tank due to operation can be compensated for.
Die flexible Wand kann zweckmäßigerweise als zylindrische allerdings mit einer gewellten Außenkontur versehene Wandung ausgestaltet sein. Die Wellung der Außenkontur ermöglicht einen vereinfachten Volumenausgleich.The flexible wall can expediently be designed as a cylindrical wall, however, provided with a corrugated outer contour. The corrugation of the outer contour enables simplified volume compensation.
Alternativ hierzu kann das Reservoir auch ein starres Volumen aufweisen und hierbei gleichzeitig mit einer Be- und/oder Entlüftung versehen sein.As an alternative to this, the reservoir can also have a rigid volume and at the same time be provided with ventilation and / or ventilation.
Weiterhin kann die Pumpe und das Reservoir unmittelbar aneinanderliegend angeordnet sein, wodurch Zuleitungen vermieden und die Konstruktion demzufolge vereinfacht werden kann.Furthermore, the pump and the reservoir can be arranged directly adjacent to one another, as a result of which supply lines can be avoided and the construction can consequently be simplified.
Eine Ausgestaltung der Erfindung ist weiterhin dadurch gekennzeichnet, daß zumindest über einen Teilbereich der Länge des Gehäuses vorzugsweise über mindestens die Hälfte der Länge keine über die Außenkontur des Gehäuses überstehenden Teile vorgesehen sind. Hierdurch wird die Einsetzbarkeit der Hydraulikpumpeneinheit in betreffende Halterungen erleichtert. Ausgenommen davon sind lediglich gegebenenfalls über die Außenkontur vorstehende Befestigungsteile. Insbesondere gilt dies für das eine Gehäuseteil, welches an der Unterseite der Ventilplatte sich befindet.An embodiment of the invention is further characterized in that at least over a portion of the length of the housing, preferably over at least half the length, no parts projecting beyond the outer contour of the housing are provided. As a result, the usability of the hydraulic pump unit in the relevant holders is facilitated. Except of these are only possibly protruding fastening parts over the outer contour. This applies in particular to the one housing part which is located on the underside of the valve plate.
Schalter zum Bedienen der Hydraulikpumpeneinheit und oder Kontrollorgane sind zweckmäßigerweise im Boden des vorzugsweise oberen Verschlußdeckels vorgesehen und stehen daher ebenfalls nicht über.Switches for operating the hydraulic pump unit and or control elements are expediently provided in the bottom of the preferably upper sealing cover and therefore do not protrude either.
Vorzugsweise sind die beiden Gehäuseteile ungleich lang. Insbesondere dient das eine Gehäuseteil dazu, den Antriebsmotor aufzunehmen, wohingegen das weitere Gehäuseteil mit geringerer Länge dazu vorgesehen ist, die Pumpe, das Reservoir sowie den Verschlußdeckel gegebenenfalls mit Schalter und/oder Kontrollorgane aufzunehmen. Hierdurch wird eine optimale Anpassung an die Länge der einzelnen Bauteile erreicht mit der Folge einer - trotz der schlanken Form - minimalen Länge.The two housing parts are preferably of unequal length. In particular, the one housing part serves to accommodate the drive motor, whereas the other housing part with a shorter length is intended to accommodate the pump, the reservoir and the sealing cover, if necessary with a switch and / or control elements. In this way, an optimal adaptation to the length of the individual components is achieved, with the consequence of a minimal length, despite the slim shape.
Zweckmäßigerweise ist ein Verschlußdeckel, vorzugsweise der untere Verschlußdeckel als Schnellverschluß ausgebildet, d. h. kann bei Bedarf durch einfaches Drehen herausgenommen werden.A closure cover, preferably the lower closure cover, is expediently designed as a quick release closure, i. H. can be removed by simply turning if necessary.
Ferner kann zweckmäßigerweise ein Verschlußdeckel, vorzugsweise der obere Verschlußdeckel, als feststehender Verschlußdeckel vorgesehen sein.Furthermore, a closure cover, preferably the upper closure cover, can expediently be provided as a fixed closure cover.
Eine Ausgestaltung der vorliegenden Erfindung ist darin gekennzeichnet, daß mindestens ein Anschlußelement an der Ventilplatte positioniert ist. Sollte die Hydraulikpumpeneinheit für ein doppelwirkendes Zylindersystem eingesetzt werden, sind alternativ zwei Anschlußelemente im Bereich der Ventilplatte vorgesehen, eines für die Druckleitung das andere für die Rücklaufleitung. Eine zweckmäßige Ausgestaltung der erfindungsgemäßen Hydraulikpumpeneinheit wird nachstehend anhand von Zeichnungsfiguren näher erläutert. Es zeigen:An embodiment of the present invention is characterized in that at least one connection element is positioned on the valve plate. If the hydraulic pump unit is used for a double-acting cylinder system, two connection elements are alternatively provided in the area of the valve plate, one for the pressure line and the other for the return line. A practical embodiment of the hydraulic pump unit according to the invention is explained in more detail below with reference to drawing figures. Show it:
Fig. 1: eine Längsschnittdarstellung durch die kompletteFig. 1: a longitudinal sectional view through the complete
Hydraulikpumpeneinheit;Hydraulic pump unit;
Fig. 2: eine untere Stirnseitenansicht der Hydraulikpumpeneinheit nach2: a lower end view of the hydraulic pump unit according to
Anspruch 1 sowieClaim 1 as well
Fig. 3: eine obere Stirnseitenansicht der Hydraulikpumpeneinheit nach3: an upper end view of the hydraulic pump unit according to
Fig. 1.Fig. 1.
Bezugsziffer 1 in Fig. 1 bezeichnet die eriϊndungsgemäße Hydraulikpumpeneinheit in ihrer Gesamtheit. Sie umfaßt ein schlankes langgezogenes zylindrisches Gehäuse 2, welches an der unteren Stirnseite (linke Seite von Fig. 1) sowie an der oberen Stirnseite (rechte Seite von Fig. 1) jeweils mittels eines Verschlußdeckels 9 bzw. 10 verschlossen ist. Die Hydraulikpumpeneinheit besitzt demzufolge das Aussehen einer zylindrischen Röhre, welche sämtliche Funktionseinheiten beinhaltet.Reference number 1 in FIG. 1 designates the hydraulic pump unit according to the invention in its entirety. It comprises a slim, elongated cylindrical housing 2, which is closed on the lower end side (left side of FIG. 1) and on the upper end side (right side of FIG. 1) by means of a closure cover 9 and 10, respectively. The hydraulic pump unit therefore has the appearance of a cylindrical tube which contains all the functional units.
Das Gehäuse 2 hat zweckmäßigerweise einen Außendurchmesser von 150 mm bis 220 mm. Allerdings sind auch andere Maße einsatzspezifϊsch möglich. Das Gehäuse ist aufgebaut aus zwei Gehäuseteilen 3 sowie 4, welche von einer dazwischen angeordneten Ventilplatte 11 getragen werden. Die Ventilplatte 11 komplettiert aufgrund ihrer scheibenartigen Form sozusagen das Gesamtgehäuse. Innerhalb der Ventilplatte 11 befinden sich verschiedene Funktionsventile wie z. B. ein nicht im einzelnen dargestelltes Druckumschaltventil (Niederdruck Hochdruck, Druckablaßventil sowie Druckbegrenzungsventil). Desweiteren ist an der Ventilplatte 11 ein Anschlußelement 18 für die Verbindung zum Werkzeug vorgesehen. Bedarfsweise können auch zwei Anschlußelemente 18 an der Ventilplatte 11 vorgesehen sein für eine Druckleitung sowie Rücklaufleitung bei doppelt wirkenden Systemen.The housing 2 expediently has an outer diameter of 150 mm to 220 mm. However, other dimensions are also possible depending on the application. The housing is constructed from two housing parts 3 and 4, which are supported by a valve plate 11 arranged between them. Due to its disc-like shape, the valve plate 11 completes the entire housing, so to speak. Within the valve plate 11 there are various function valves such as. B. a pressure switch valve (low pressure high pressure, pressure relief valve and pressure relief valve) not shown in detail. Furthermore, there is a connection element 18 for the connection on the valve plate 11 provided for the tool. If necessary, two connection elements 18 can also be provided on the valve plate 11 for a pressure line and return line in double-acting systems.
Unmittelbar an der Oberseite der Ventilplatte 11 befindet sich die Pumpe 5, welche durch einen auf der gegenüberliegenden Seite der Ventilplatte 11 angeordneten Antriebsmotor 6 insbesondere elektrischen Antriebsmotor angetrieben wird. In dem zweiten Gehäuseteil 3 befindet sich zwischen dem Verschlußdeckel 9 und dem Antriebsmotor 6 ein Akkumulator 16. Alternativ hierzu kann der Akkumulator 16 allerdings - bei Bedarf - auch außerhalb der Hydraulikpumpeneinheit vorgesehen sein. An der Oberseite der Pumpe 5 befindet sich das Reservoir 13 für die Hydraulikflüssigkeit, d. h. der Hydrauliktank.Directly on the top of the valve plate 11 is the pump 5, which is driven by a drive motor 6 arranged on the opposite side of the valve plate 11, in particular an electric drive motor. An accumulator 16 is located in the second housing part 3 between the sealing cover 9 and the drive motor 6. As an alternative, however, the accumulator 16 can also be provided outside the hydraulic pump unit, if required. At the top of the pump 5 is the reservoir 13 for the hydraulic fluid, i. H. the hydraulic tank.
Die Wandung des Reservoirs ist in Form einer flexiblen Wand 12 ausgebildet, um Volumenunterschiede innerhalb des Reservoirs, welche betriebsbedingt auftreten, ausgleichen zu können. Die flexible Wand 12 ist zylindrisch umlaufend allerdings mit einer Wellung versehen, die den Volumenausgleich erleichtert.The wall of the reservoir is designed in the form of a flexible wall 12 in order to be able to compensate for volume differences within the reservoir which occur due to the operation. The flexible wall 12 is provided with a corrugation around the cylinder, which facilitates volume compensation.
Im Bereich der unteren Stirnseite ist der eingangs erwähnte Verschlußdeckel 9 als manuell zu betätigender Schnellverschluß einschraubbar bzw. herausschraubbar. Hierzu dient der über die Stirnflächenebene in das Gehäuse 2 hineinversenkte Tragegriff 7. Für diesen Schnellverschluß ist der Akkumulator 16 einfach zugänglich.In the area of the lower end face, the closure cap 9 mentioned at the beginning can be screwed in or unscrewed as a manually operated quick-release fastener. For this purpose, the handle 7 sunk into the housing 2 over the end face plane. The rechargeable battery 16 is easily accessible for this quick-release fastener.
Das den Antriebsmotor 6 sowie Akkumulator 16 aufnehmende, untere Gehäuseteil 3 ist länger als das weitere, obere Gehäuseteil 4.The lower housing part 3 receiving the drive motor 6 and the accumulator 16 is longer than the further, upper housing part 4.
Der gegenüberliegende obere Verschlußdeckel 10 ist starr im Gehäuse 2 befestigt. Auch er besitzt einen Tragegriff 8, welcher über die Stirnseitenebene nach innen versenkt ist. Am Boden des Verschlußdeckels 10 ist eine Schalteinrichtung 14 zum Betrieb der Hydraulikpumpeneinheit 1 sowie ein Kontrollorgan (Anzeige) 15 angeordnet. Desweiteren finden sich im Bereich des Bodens des Verschlußdeckels 10 eine externe Ladebuchse 19 für Fremdenergie, ein elektrischer Sicherungsautomat 20 sowie eine Netzladebuchse 21 für den Akkumulator 16.The opposite upper closure cover 10 is rigidly fastened in the housing 2. He also has a handle 8, which is recessed inward over the end face plane. A switching device 14 for operating the hydraulic pump unit 1 and a control element (display) 15 are arranged on the bottom of the closure cover 10. Furthermore, there is an external charging socket 19 for external energy, an electrical circuit breaker 20 and a mains charging socket 21 for the accumulator 16 in the area of the bottom of the closure lid 10.
Die erfindungsgemäße Hydraulikpumpeneinheit gewährleistet zum einen einen sicheren Schutz sämtlicher Funktionseinheiten innerhalb des langgezogenen, zylindrischen Gehäuses, zum anderen ist die Hydraulikpumpeneinheit einfach zu handhaben und hat insbesondere den Vorteil, daß sie in Aufnahmen herkömmlicher Tragehilfen für Tanks, insbesondere Tanks von Atemschutzgeräten, die üblicherweise am Rücken der Bedienungsperson getragen werden, aufgenommen werden kann.The hydraulic pump unit according to the invention ensures, on the one hand, reliable protection of all functional units within the elongated, cylindrical housing, on the other hand, the hydraulic pump unit is easy to handle and has the particular advantage that it can be found in receptacles of conventional carrying aids for tanks, in particular tanks of breathing apparatus, which are usually on the back the operator can be carried.
Die Bedienungsperson hat damit die Hydraulikpumpeneinheit ständig bei sich und kann Arbeiten durchführen, ohne daß die Hydraulikpumpeneinheit in ihrer Position verändert werden muß.The operator thus always has the hydraulic pump unit with him and can carry out work without having to change the position of the hydraulic pump unit.
Die vorliegende Erfindung stellt demzufolge einen ganz besonderen Betrag zum einschlägigen technischen Gebiet dar. The present invention therefore represents a very special amount in the relevant technical field.
BEZUGSZEICHENLISTELIST OF REFERENCE NUMBERS
HydraulikpumpeneinheitHydraulic pump unit
Gehäusecasing
Gehäuseteilhousing part
Gehäuseteilhousing part
Pumpepump
E-MotorE-Motor
Tragegriffhandle
Tragegriffhandle
Verschlußdeckelcap
Verschlußdeckelcap
Ventilplatte flexible WandValve plate flexible wall
Reservoir für HydraulikflüssigkeitHydraulic fluid reservoir
Schalterswitch
Kontrollorgancontrolling body
Akkubattery pack
Schieberventilspool valve
Anschlußelement externe Ladebuchse elektrisches SicherungselementConnection element external charging socket electrical fuse element
Nachladebuchse für Akku Recharge socket for battery

Claims

PATENTANSPRÜCHE
1. Tragbare Hydraulikpumpeneinheit (1) mit einem Gehäuse (2), einer Pumpe (5), einem Antriebsmotor (6) für die Pumpe (5), insbesondere in Form eines elektrischen Antriebsmotors sowie einem Reservoir (13) für Hydraulikflüssigkeit,1. Portable hydraulic pump unit (1) with a housing (2), a pump (5), a drive motor (6) for the pump (5), in particular in the form of an electric drive motor and a reservoir (13) for hydraulic fluid,
dadurch gekennzeichnet, daßcharacterized in that
das Gehäuse (2) - eine rohrartige Form besitzt.the housing (2) - has a tubular shape.
2. Hydraulikpumpeneinheit nach Anspruch 1,2. Hydraulic pump unit according to claim 1,
dadurch gekennzeichnet, daßcharacterized in that
das Gehäuse - im Querschnitt gesehen - eine punktsymmetrische Form aufweist.the housing - seen in cross section - has a point-symmetrical shape.
3. Hydraulikpumpeneinheit nach Anspruch 1 oder 2,3. Hydraulic pump unit according to claim 1 or 2,
dadurch gekennzeichnet, daßcharacterized in that
der Außendurchmesser des Gehäuses (2) im Bereich 150 mm bis 220 mm liegt.the outer diameter of the housing (2) is in the range of 150 mm to 220 mm.
4. Hydraulikpumpeneinheit nach Anspruch 1- 3,4. Hydraulic pump unit according to claim 1-3,
dadurch gekennzeichnet, daß die Hydraulikpumpeneinheit (1) in Aufnahmen herkömmlicher Tragehüfen für Tanks, insbesondere Tranks von Atemschutzgeräten einsetzbar ist.characterized in that the hydraulic pump unit (1) can be used in receptacles of conventional carrying aids for tanks, in particular pans for breathing apparatus.
5. Hydraulikpumpeneinheit nach einem der vorhergehenden Ansprüche,5. Hydraulic pump unit according to one of the preceding claims,
dadurch gekennzeichnet, daßcharacterized in that
an mindestens einer Stirnseite, vorzugsweise an beiden Stirnseiten ein unter die Stirnseitenebene versenkter Tragegriff (7, 8) vorgesehen ist.On at least one end face, preferably on both end faces, a handle (7, 8) sunk below the end face plane is provided.
6. Hydraulikpumpeneinheit nach Anspruch 5,6. Hydraulic pump unit according to claim 5,
dadurch gekennzeichnet, daßcharacterized in that
der Tragegriff (7 bzw. 8) sich im Inneren eines sich in das Gehäuse hineinerstreckenden Verschlußdeckels (9 bzw. 10) befindet.the carrying handle (7 or 8) is located inside a sealing cover (9 or 10) which extends into the housing.
7. Hydraulikpumpeneinheit nach einem der vorhergehenden Ansprüche,7. Hydraulic pump unit according to one of the preceding claims,
dadurch gekennzeichnet, daßcharacterized in that
das Gehäuse (2) zwei Gehäuseteile (3, 4) umfaßt, eine Ventilplatte (11) vorgesehen ist und die Ventilplatte (11) sich zwischen den beiden Gehäuseteilen (3, 4) befindet.the housing (2) comprises two housing parts (3, 4), a valve plate (11) is provided and the valve plate (11) is located between the two housing parts (3, 4).
8. Hydraulikpumpeneinheit nach Anspruch 7,8. Hydraulic pump unit according to claim 7,
dadurch gekennzeichnet, daß die Ventilplatte (11) den Antriebsmotor und/oder die Pumpe (5) und/oder die Gehäuseteile (3, 4) trägt.characterized in that the valve plate (11) carries the drive motor and / or the pump (5) and / or the housing parts (3, 4).
9. Hydraulikpumpeneinheit nach einem der vorhergehenden Ansprüche,9. Hydraulic pump unit according to one of the preceding claims,
dadurch gekennzeichnet, daßcharacterized in that
das Reservoir (13) mit einer flexiblen Wand (12) oder einer flexiblen Membran versehen ist.the reservoir (13) is provided with a flexible wall (12) or a flexible membrane.
10. Hydraulikpumpeneinheit nach Anspruch 9,10. Hydraulic pump unit according to claim 9,
dadurch gekennzeichnet, daßcharacterized in that
die flexible Wand (12) eine zylindrische, gewellte Außenkontur aufweist.the flexible wall (12) has a cylindrical, corrugated outer contour.
11. Hydraulikpumpeneinheit nach Anspruch 1 - 8,11. Hydraulic pump unit according to claims 1-8,
dadurch gekennzeichnet, daßcharacterized in that
das Reservoir (13) ein starres Volumen aufweist und mit einer Be- und/oder Entlüftung versehen ist.the reservoir (13) has a rigid volume and is provided with ventilation and / or ventilation.
12. Hydraulikpumpeneinheit nach einem der vorhergehenden Ansprüche,12. Hydraulic pump unit according to one of the preceding claims,
dadurch gekennzeichnet, daßcharacterized in that
der Antriebsmotor, die Pumpe (5) sowie das Reservoir (13) axial hintereinander angeordnet sind. the drive motor, the pump (5) and the reservoir (13) are arranged axially one behind the other.
13. Hydraulikpumpeneinheit nach einem der vorhergehenden Ansprüche,13. Hydraulic pump unit according to one of the preceding claims,
dadurch gekennzeichnet, daßcharacterized in that
die Pumpe (5) und das Reservoir (13) unmittelbar aneinanderliegend angeordnet sind.the pump (5) and the reservoir (13) are arranged directly adjacent to one another.
14. Hydraulikpumpeneinheit nach einem der vorhergehenden Ansprüche,14. Hydraulic pump unit according to one of the preceding claims,
dadurch gekennzeichnet, daßcharacterized in that
zumindest über einen Teilbereich des Gehäuses (2), vorzugsweise über mindestens die Hälfte der Gesamtlänge des Gehäuses keine über die Außenkontur des Gehäuses überstehenden Teile vorgesehen sind.At least over a partial area of the housing (2), preferably over at least half of the total length of the housing, no parts projecting beyond the outer contour of the housing are provided.
15. Hydraulikpumpeneinheit nach einem der Ansprüche 6-14.15. Hydraulic pump unit according to one of claims 6-14.
dadurch gekennzeichnet, daßcharacterized in that
im Boden des Verschlußdeckels (9 oder 10) Schalter (14) und/oder Kontrollorgane (15) vorgesehen sind.switches (14) and / or control elements (15) are provided in the bottom of the sealing cover (9 or 10).
16. Hydraulikpumpeneinheit nach einem der Ansprüche 8 - 16,16. Hydraulic pump unit according to one of claims 8 - 16,
dadurch gekennzeichnet, daßcharacterized in that
das die beiden Gehäuseteile (3, 4) ungleich lang sind. that the two housing parts (3, 4) are of different lengths.
17. Hydraulikpumpeneinheit nach einem der vorhergehenden Ansprüche 6 - 16,17. Hydraulic pump unit according to one of the preceding claims 6-16,
dadurch gekennzeichnet, daßcharacterized in that
ein Verschlußdeckel (z. B. 9) als Schnellverschluß ausgebildet ist.a cover (z. B. 9) is designed as a quick release.
18. Hydraulikpumpeneinheit nach einem der Ansprüche 6 - 17,18. Hydraulic pump unit according to one of claims 6-17,
dadurch gekennzeichnet, daßcharacterized in that
ein weiterer Verschlußdeckel (10) als feststehender Deckel vorgesehen ist.a further cover (10) is provided as a fixed cover.
19. Hydraulikpumpeneinheit nach Anspruch 18,19. Hydraulic pump unit according to claim 18,
dadurch gekennzeichnet, daßcharacterized in that
mindestens ein Anschlußelement (18) an der Ventilplatte (11) positioniert ist. at least one connection element (18) is positioned on the valve plate (11).
EP01953775A 2000-06-16 2001-05-26 Portable hydraulic pump unit Withdrawn EP1290344A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10028957 2000-06-16
DE10028957A DE10028957C2 (en) 2000-06-16 2000-06-16 Portable hydraulic pump unit
PCT/DE2001/002008 WO2001096742A1 (en) 2000-06-16 2001-05-26 Portable hydraulic pump unit

Publications (1)

Publication Number Publication Date
EP1290344A1 true EP1290344A1 (en) 2003-03-12

Family

ID=7645480

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01953775A Withdrawn EP1290344A1 (en) 2000-06-16 2001-05-26 Portable hydraulic pump unit

Country Status (7)

Country Link
US (1) US6942468B2 (en)
EP (1) EP1290344A1 (en)
JP (1) JP2004503724A (en)
KR (1) KR20030045679A (en)
CN (1) CN1243912C (en)
DE (1) DE10028957C2 (en)
WO (1) WO2001096742A1 (en)

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Also Published As

Publication number Publication date
DE10028957A1 (en) 2002-01-03
US20040037709A1 (en) 2004-02-26
DE10028957C2 (en) 2002-07-11
US6942468B2 (en) 2005-09-13
JP2004503724A (en) 2004-02-05
KR20030045679A (en) 2003-06-11
CN1432106A (en) 2003-07-23
WO2001096742B1 (en) 2003-05-15
CN1243912C (en) 2006-03-01
WO2001096742A1 (en) 2001-12-20

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