DE4132456A1 - Radial piston machine - has pistons located in housing bore and with domes on stroke ring which is movable in recess of housing in longitudinal direction of piston axes. - Google Patents

Radial piston machine - has pistons located in housing bore and with domes on stroke ring which is movable in recess of housing in longitudinal direction of piston axes.

Info

Publication number
DE4132456A1
DE4132456A1 DE4132456A DE4132456A DE4132456A1 DE 4132456 A1 DE4132456 A1 DE 4132456A1 DE 4132456 A DE4132456 A DE 4132456A DE 4132456 A DE4132456 A DE 4132456A DE 4132456 A1 DE4132456 A1 DE 4132456A1
Authority
DE
Germany
Prior art keywords
housing
piston
machine
ring
radial piston
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Withdrawn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
DE4132456A
Other languages
German (de)
Inventor
Gerhard Dipl Ing Nonnenmacher
Wilhelm Dworak
Uwe Dipl Ing Altmann
Klaus Dipl Ing Griese
Horst Dr Dr Ing Hesse
Dieter Dipl Ing Fetting
Wolfgang Dipl Ing Schrader
Stefan Dipl Ing Schmitt
Werner Dipl Ing Steprath
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to DE4132456A priority Critical patent/DE4132456A1/en
Publication of DE4132456A1 publication Critical patent/DE4132456A1/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Withdrawn legal-status Critical Current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
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/053—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders
    • 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
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/06—Control
    • F04B1/07—Control by varying the relative eccentricity between two members, e.g. a cam and a drive shaft
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/12—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members
    • F04B49/123—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members by changing the eccentricity of one element relative to another element
    • F04B49/125—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members by changing the eccentricity of one element relative to another element by changing the eccentricity of the actuation means, e.g. cams or cranks, relative to the driving means, e.g. driving shafts

Landscapes

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

Abstract

The machine has at least one piston (12) which locates on a stroke ring, arranged displaceably in the housing (10) of the machine crosswise to the longitudinal axis of the piston (a). The stroke ring is located on a link bearing (16,17), which itself is located on an inclined, elbow part of an axially displaceable shaft (21) executing an oscillating movement. The link bearing has a ball-shaped upper surface (18) on which sits an intermediate ring (16) of the stroke ring (14). The inclined elbow formation (20) is cylindrical. USE/ADVANTAGE - To vary the stroke of the pistons with a simple mechanism in a radial piston machine.

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einer Radialkolbenmaschine nach der Gat­ tung des Hauptanspruchs. Derartige Maschinen haben zur Veränderung des Förder- bzw. Schluckvolumens einen verhältnismäßig komplizierten Verstellmechanismus, wodurch die Maschinen aufwendig, unter Umstän­ den sogar störanfällig werden.The invention is based on a radial piston machine according to the Gat main claim. Such machines have to change of the delivery or swallowing volume is a relatively complicated Adjustment mechanism, which makes the machines complex, under certain circumstances that are even prone to failure.

Vorteile der ErfindungAdvantages of the invention

Die erfindungsgemäße Radialkolbenmaschine mit den kennzeichnenden Merkmalen des Hauptanspruchs hat demgegenüber den Vorteil, daß die Veränderung des Kolbenhubs mit sehr einfachen Mitteln möglich ist.The radial piston machine according to the invention with the characteristic Features of the main claim has the advantage that the Changing the piston stroke is possible with very simple means.

Zeichnungdrawing

Ein Ausführungsbeispiel der Erfindung ist in der nachfolgenden Be­ schreibung und Zeichnung wiedergegeben. Letztere zeigt einen Längs­ schnitt durch eine nur teilweise dargestellte Radialkolbenmaschine. An embodiment of the invention is in the following Be spelling and drawing reproduced. The latter shows a longitudinal cut through a radial piston machine shown only partially.  

Beschreibung des AusführungsbeispielsDescription of the embodiment

Die Radialkolbenpumpe weist ein feststehendes Gehäuse 10 auf, in welchem mehrere, etwa radial verlaufende Bohrungen 11 ausgebildet sind, welche Kolben 12 aufnehmen. Deren Kuppen 13 stützen sich an der Außenseite eines Hubrings 14 ab, welcher in einer passenden Ge­ häuseaufnehmung 15 in Richtung der Kolbenachsen verschiebbar ist. Der Hubring 14 stützt sich über ein aus Gelenklager-Außenring 16 und Gelenklager-Innenring 17 mit Kugeloberfläche 18 bestehendes Gelenk­ lager ab, welches verschiebbar auf der schrägen Kröpfung 20 einer Triebwelle 21 angeordnet ist. Wenn sich die Triebwelle 21 dreht, führt die schräge Kröpfung 20 eine Taumelbewegung aus, die das Ge­ lenklager 16, 17 mitmacht und auf den Hubring überträgt, welcher dann eine hin- und hergehende Bewegung ausübt, die auf die Kolben übertragen wird. Diese saugen in bekannter Weise auf der nicht dar­ gestellten Saugseite Druckmittel an und verdrängen es auf der Druck­ seite zu einem Verbraucher.The radial piston pump has a fixed housing 10 , in which a plurality of approximately radially extending bores 11 are formed, which receive pistons 12 . Their crests 13 are supported on the outside of a cam ring 14 , which housing receptacle 15 is displaceable in a suitable Ge in the direction of the piston axes. The cam ring 14 is supported on an existing spherical bearing outer ring 16 and spherical bearing inner ring 17 with a spherical surface 18 , which is slidably arranged on the oblique offset 20 of a drive shaft 21 . When the drive shaft 21 rotates, the oblique crank 20 performs a wobble movement, which the joint bearing 16 , 17 participates in and transmits to the cam ring, which then exerts a reciprocating movement which is transmitted to the pistons. These suck in a known manner on the suction side not shown pressure medium and displace it on the pressure side to a consumer.

Durch axiales Verschieben der Triebwelle 21 wird entsprechend das Gelenklager 16 und 17 entlang der schrägen Kröpfung bewegt, wodurch der Hub des Hubrings 14 entsprechend vergrößert oder verkleinert wird. In der in der Figur dargestellten Stellung des Gelenkkörpers ist der Hub des Hubrings 14 und damit der Kolben 12 am kleinsten. Eine derartige Radialkolbenmaschine eignet sich vor allem für klei­ nere Leistungen bei hohen Drehzahlen, also als von einer Brennkraft­ maschine angetriebenen Versorgungspumpe für eine Zentralhydraulik für das Fahrzeug.Axial displacement of the drive shaft 21 correspondingly moves the joint bearing 16 and 17 along the oblique offset, as a result of which the stroke of the cam ring 14 is correspondingly increased or decreased. In the position of the joint body shown in the figure, the stroke of the lifting ring 14 and thus the piston 12 is the smallest. Such a radial piston machine is particularly suitable for smaller powers at high speeds, that is, as a supply pump for a central hydraulic system for the vehicle, which is driven by an internal combustion engine.

Claims (3)

1. Radialkolbenmaschine mit mindestens einem von einem eine Taumel­ bewegung angetriebenen Kolben (12), der an einem Hubring (14) an­ liegt, welcher quer zur Längsachse des oder der Kolben verschiebbar im Gehäuse (10) der Radialkolbenmaschine angeordnet ist, dadurch gekennzeichnet, daß der Hubring (14) auf einem Gelenklager (16, 17) gelagert ist, das selbst wiederum auf einem eine Taumelbewegung aus­ führenden, schräg verlaufenden Kröpfungsteil (20) einer axial ver­ schiebbaren Welle (21) gleitend gelagert ist.1. Radial piston machine with at least one of a wobble movement driven piston ( 12 ) on a cam ring ( 14 ), which is arranged transversely to the longitudinal axis of the piston or pistons in the housing ( 10 ) of the radial piston machine, characterized in that the cam ring ( 14 ) is mounted on a spherical bearing ( 16 , 17 ), which in turn is slidably mounted on a wobble movement from leading, inclined crank portion ( 20 ) of an axially displaceable shaft ( 21 ). 2. Maschine nach Anspruch 1, dadurch gekennzeichnet, daß das Gelenk­ lager (16, 17) eine Kugeloberfläche (18) aufweist, auf der auf einem Zwischenring (16) der Hubring (14) sitzt.2. Machine according to claim 1, characterized in that the joint bearing ( 16 , 17 ) has a spherical surface ( 18 ) on which on an intermediate ring ( 16 ) the cam ring ( 14 ) is seated. 3. Maschine nach einem der Ansprüche 1 oder 2, dadurch gekennzeich­ net, daß die schräge Kröpfung (20) zylindrisch ausgebildet ist.3. Machine according to one of claims 1 or 2, characterized in that the oblique offset ( 20 ) is cylindrical.
DE4132456A 1991-09-30 1991-09-30 Radial piston machine - has pistons located in housing bore and with domes on stroke ring which is movable in recess of housing in longitudinal direction of piston axes. Withdrawn DE4132456A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4132456A DE4132456A1 (en) 1991-09-30 1991-09-30 Radial piston machine - has pistons located in housing bore and with domes on stroke ring which is movable in recess of housing in longitudinal direction of piston axes.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4132456A DE4132456A1 (en) 1991-09-30 1991-09-30 Radial piston machine - has pistons located in housing bore and with domes on stroke ring which is movable in recess of housing in longitudinal direction of piston axes.

Publications (1)

Publication Number Publication Date
DE4132456A1 true DE4132456A1 (en) 1993-04-01

Family

ID=6441765

Family Applications (1)

Application Number Title Priority Date Filing Date
DE4132456A Withdrawn DE4132456A1 (en) 1991-09-30 1991-09-30 Radial piston machine - has pistons located in housing bore and with domes on stroke ring which is movable in recess of housing in longitudinal direction of piston axes.

Country Status (1)

Country Link
DE (1) DE4132456A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6478548B1 (en) 1998-05-22 2002-11-12 Weber-Hydraulik Gmbh Device for adjusting hydraulic equipment
DE102006000832A1 (en) * 2006-01-05 2007-07-12 Siemens Ag Radial piston pump for fuel high pressure supply in fuel injection system of internal combustion engine, has pump unit including pump piston, where flow rate control of piston pump takes place by stroke length adjustment of pump piston

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6478548B1 (en) 1998-05-22 2002-11-12 Weber-Hydraulik Gmbh Device for adjusting hydraulic equipment
DE102006000832A1 (en) * 2006-01-05 2007-07-12 Siemens Ag Radial piston pump for fuel high pressure supply in fuel injection system of internal combustion engine, has pump unit including pump piston, where flow rate control of piston pump takes place by stroke length adjustment of pump piston
DE102006000832B4 (en) * 2006-01-05 2011-12-01 Continental Automotive Gmbh Radial piston pump with flow control

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Legal Events

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8139 Disposal/non-payment of the annual fee