EP0774072B1 - Hubkolbenpumpe - Google Patents
Hubkolbenpumpe Download PDFInfo
- Publication number
- EP0774072B1 EP0774072B1 EP96900275A EP96900275A EP0774072B1 EP 0774072 B1 EP0774072 B1 EP 0774072B1 EP 96900275 A EP96900275 A EP 96900275A EP 96900275 A EP96900275 A EP 96900275A EP 0774072 B1 EP0774072 B1 EP 0774072B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- eccentric
- pistons
- spring clip
- bow spring
- pump according
- 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
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
- F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
- F04B9/045—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being eccentrics
-
- 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
- F04B1/0404—Details or component parts
- F04B1/0426—Arrangements for pressing the pistons against the actuated cam; Arrangements for connecting the pistons to the actuated cam
Definitions
- the invention relates to a reciprocating pump according to the Genus of the main claim.
- Such a reciprocating piston pump is known from DE 22 43 137, with the two pistons facing away from each other radially Rotation axis of an eccentric located between them are arranged.
- the pistons are of a C-shaped Bow spring that bulges around the circumference of the eccentric and both ends of which engage a piston opposite points against a peripheral surface of the eccentric.
- To engage the bow spring on the Pistons each have a transverse bore on the eccentric facing ends through which the ends of the bow spring are stuck.
- the bow spring is elastically expanded, she is under tension and keeps the pistons in contact with the Circumferential surface of the eccentric.
- the two pistons are eccentric about its axis of rotation a reciprocating stroke movement, respectively one piston a working and at the same time the other piston performs an intake stroke.
- a disadvantage of the known reciprocating pump is that two pistons for mounting the bow spring about its longitudinal axis must be rotated that their through holes through a Assembly opening for the eccentric in the pump housing for Insert the ends of the bow spring are accessible. Furthermore, the bores of both pistons must be parallel be aligned to insert the bow spring can. Since the pistons are in place before installing the bow spring Cylinder bores have to be inserted in the pump housing, of the pistons are only on the outside end faces and inside in the Assembly opening for the eccentric protruding piston ends accessible so that the pistons are difficult to grip for turning are.
- the reciprocating pump according to the invention with the features of Claim 1 has the advantage that the bow spring in each Angular position of the two pistons can be mounted Alignment by rotating the pistons around their longitudinal axes is unnecessary yourself.
- the hook-shaped eyelets become with their mouths first into the ring grooves at the mutually facing ends of the pressed both pistons until they snap into place.
- the Snap connection between the bow spring and piston prevents automatic release of the bow spring. This allows a quick one and simple assembly of the reciprocating pump according to the invention.
- the Bow spring is a simple bent wire part that can be quickly and can be produced cheaply without waste of material.
- the bow spring extends over one of its two eyelets.
- the Extension preferably extends approximately tangentially Direction or circumferentially with respect to the eccentric, he extends an area curved around the eccentric Bow spring beyond the eyelet.
- the extension and the curved area prevent that the bow spring in the ring grooves of the pistons about their longitudinal axis twisted. At most a minimal swivel movement of the Bow spring is possible.
- Reciprocating piston pump 10 has two pistons 12, the coaxial and facing away radially to one Rotation axis 14 of an eccentric located between them 16 are arranged.
- the two pistons 12 are in cylinders 18, which are inserted into a pump housing 20, slidably guided.
- Mutually facing ends of the pistons 12 are from the Cylinders 18 in an eccentric space 22 inside the Pump housing 20 before.
- the eccentric space 22 is a flat, cylindrical cavity, the axis of which is also the Axis of rotation 14 of the eccentric 16 is the longitudinal axes of the pistons 12 cuts at right angles.
- the cylinders 18 open vertically in a peripheral surface 24 of the eccentric space 22.
- the eccentric 14 is a cylindrical pin which is in one piece with an eccentric shaft 40 and eccentrically with one Eccentricity e is arranged at one end.
- the eccentric 16 By rotating drive of the eccentric shaft 40 by means of a non shown electric motor, the eccentric 16 becomes one Rotational movement about its axis of rotation 14, which at the same time Rotation axis of the eccentric shaft 40 is driven.
- the eccentric 16 drives the bearing ring 32 to one Circular movement about the axis of rotation 14, the bearing ring 32 via the bearing balls 34 from the rotation of the eccentric 16 is decoupled, the bearing ring 32 does not rotate at its Circular motion.
- the bearing ring is driven by its circular motion 32 the pistons 12 resting against it to a back and forth Movement on, the working and suction stroke of the pistons 12th represents.
- the bow spring 28 is shown in Figures 2 and 3, wherein Figure 3 is a view in the direction of arrow III in Figure 4 represents.
- the bow spring 28 is made of spring steel round wire bent. It has a curved area 42, which is with mounted bow spring 28 (Figure 1) around the circumference of the Eccentric 16 arches.
- the bow spring is at both ends of its curved region 42 28 bent into hook-shaped eyelets 44 which at one point of their Are open to a large extent.
- the eyelets 44 are in levels that are perpendicular to a plane in which the curved Area 42 is located.
- the two levels in which the Eyes 44 are not parallel, but somewhat inclined to each other ( Figure 4). Due to the elastic expansion of the Bow spring 28 during assembly, the two eyelets 44 parallel to each other ( Figure 1).
- the top view of the Bow spring 28 ( Figure 3), the eyelets 44 are approximately rectangular bent to the curved area 42 so that the eyelets 44 in Direction of the plane in which the curved area 42 open.
- the two eyelets 44 are congruent on top of each other.
- the clear width at an opening mouth 48 this is the narrowest
- the location of the open eyelets 44 is smaller than the diameter of the Piston 12 at the bottom of the annular groove 26, whereby the eyelet 44 at Introducing into the annular groove 26 first elastically expands and then snaps in and no longer automatically releases.
- a free end of the eyelet 44 as threading section 50, 51 trained, in whose area the clear width from Opening mouth 48 enlarged to the outside.
- the threading section 50, 51 serves to position the bow spring 42 for Introducing their eyelets 44 into the annular grooves 26 of the pistons 12 and supports the elastic expansion of the eyelets 44.
- the bow spring 28 has one on one of the two eyelets 44 its one-piece extension 56 on its curved region 42 opposite side. This is in one level with the curved area 42 and extends to some extent approximately in the circumferential direction of the eccentric 16.
- the one End wall 58 of the pump housing 20 delimiting the eccentric space 22 is close to the curved area 42 and the Extension 56 of the bow spring 28.
- One stop surface 58 forming end wall prevents the bow spring 28 in the annular grooves 26 of the piston 12 can rotate and only leaves a slight swivel movement ( Figure 2). This will prevents a free end 60 on the no extension having eyelet 44 of the bow spring 28 against the end wall 58 of the pump housing 20 and during the reciprocating movement the piston removes chips. This free end 60 does not reach to the plane in which the curved region 42 and the Extension 56 of the bow spring 28 are located ( Figure 3).
- bearing eccentrics 16 For the subsequent assembly of the eccentric shaft 40 with the Ball bearings 32, 34, 36 bearing eccentrics 16 must have pistons 12 are pressed apart against the force of the bow spring 28, so that the bearing ring 32 between the facing each other End faces 30 of the piston 12 can be brought. To the The pistons 12 can be pushed apart by the eccentric shaft 40 opposite side of the bearing ring 32 be conical, whereby the bearing ring 32 when the eccentric shaft 40 is inserted the pump housing 20 which in the direction of the axis of rotation 14 of the Eccentric shaft 40 takes place, the piston 12 pushes apart.
- FIGS. 5 and 6 show one compared to FIGS. 3 and 4 modified version of a bow spring 52.
- a curved Area 54 of this bow spring 52 is a polygon instead of a steady arc. Otherwise this bow spring is 54 constructed the same as the bow spring 28 already described.
- the Bow spring 54 is not described again for this reason, the explanations for that in FIGS. 3 and 4 apply Bow spring 28 shown.
- the shown in Figures 5 and 6 Bow spring 54 is instead of that shown in Figures 3 and 4 Bow spring 28 can be used in the reciprocating pump 10.
- This second Design of the bow spring 54 has the advantage that it is tight Make manufacturing tolerances better.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Description
Claims (7)
- Hubkolbenpumpe mit einem Gehäuse, in welchem zwei Kolben einander gegenüberliegend in etwa radial zu einer Rotationsachse eines rotierend antreibbaren Exzenters angeordnet sind und mit einer aus Draht gebogenen Bügelfeder, die in Umfangsrichtung um den Exzenter gekrümmt ist und die mit ihren beiden Enden an dem Exzenter zugewandten Enden der beiden Kolben angreift und diese gegen eine Umfangsfläche des Exzenters drückt, dadurch gekennzeichnet, daß die dem Exzenter (16) zugewandten Kolbenenden Ringnuten (26) aufweisen, und daß die beiden Enden der Bügelfeder (28, 52) als offene, hakenförmige Ösen (44) ausgebildet sind, die einen Nutgrund umgreifend in die Ringnuten (26) der Kolben (12) eingreifen und die Öffnungsmünder (48) aufweisen, deren lichte Weite kleiner als der Kolbendurchmesser am Ringnutgrund ist.
- Hubkolbenpumpe nach Anspruch 1, dadurch gekennzeichnet, daß die Bügelfeder (28, 52) einen Fortsatz (56) an einer ihrer beiden Ösen (44) an einer einem um den Exzenter (16) gekrümmten Bereich (42, 54) der Bügelfeder (28, 52) abgewandten Seite der Öse (44) aufweist, der sich mit dem gekrümmten Bereich (42, 54) in oder nahezu in einer Ebene befindet, und daß das Pumpengehäuse (20) eine in etwa senkrecht zu einer Rotationsachse (14) des Exzenters (16) angeordnete Anschlagfläche (58) aufweist, die allenfalls einen kleinen Abstand zu dem gekrümmten Bereich (42, 54) und dem Fortsatz (56) der Bügelfeder (28, 52) hat.
- Hubkolbenpumpe nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Öffnungsmünder (48) in etwa parallel zu einer Ebene ausgerichtet sind, in der sich der gekrümmte Bereich (42; 54) der Bügelfeder (28; 52) befindet.
- Hubkolbenpumpe nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Ösen (44) über die Öffnungsmünder (48), welche eine engste Stelle bilden, hinaus in einen sich erweiternden Einfädelabschnitt (50) übergehen.
- Hubkolbenpumpe nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der gekrümmte Bereich (54) polygonförmig gebogen ist.
- Hubkolbenpumpe nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß sich die beiden Ösen (44) bei eingebauter Bügelfeder (28; 52) in zwei in etwa zueinander parallelen Ebenen befinden.
- Hubkolbenpumpe nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß dem Exzenter (16) benachbarte Nutwangenflächen (46) der Ringnuten (26) konvex gewölbt, insbesondere kugelförmig ausgebildet sind.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19503621A DE19503621A1 (de) | 1995-02-03 | 1995-02-03 | Hubkolbenpumpe |
DE19503621 | 1995-02-03 | ||
PCT/DE1996/000046 WO1996023974A1 (de) | 1995-02-03 | 1996-01-17 | Hubkolbenpumpe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0774072A1 EP0774072A1 (de) | 1997-05-21 |
EP0774072B1 true EP0774072B1 (de) | 1998-06-17 |
Family
ID=7753153
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96900275A Expired - Lifetime EP0774072B1 (de) | 1995-02-03 | 1996-01-17 | Hubkolbenpumpe |
Country Status (6)
Country | Link |
---|---|
US (1) | US5897302A (de) |
EP (1) | EP0774072B1 (de) |
JP (1) | JP3883570B2 (de) |
CN (1) | CN1145657A (de) |
DE (2) | DE19503621A1 (de) |
WO (1) | WO1996023974A1 (de) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19650276A1 (de) * | 1996-12-04 | 1998-06-10 | Teves Gmbh Alfred | Hubkolbenpumpe |
DE19709587A1 (de) * | 1997-03-08 | 1998-09-10 | Itt Mfg Enterprises Inc | Radialkolbenpumpe mit Exzenterring |
CA2845178A1 (en) | 1997-10-30 | 1999-05-14 | Novozymes A/S | .alpha.-amylase mutants |
DE19859073A1 (de) * | 1998-12-21 | 2000-06-29 | Continental Teves Ag & Co Ohg | Kolbenpumpe |
US6183212B1 (en) * | 1999-02-17 | 2001-02-06 | Stanadyne Automotive Corp. | Snap-in connection for pumping plunger sliding shoes |
DE19948445A1 (de) * | 1999-10-08 | 2001-04-12 | Continental Teves Ag & Co Ohg | 6-Kolben-Pumpe, insbesondere für geregelte Bremssysteme |
US6684755B2 (en) | 2002-01-28 | 2004-02-03 | Bristol Compressors, Inc. | Crankshaft, compressor using crankshaft, and method for assembling a compressor including installing crankshaft |
JP4167527B2 (ja) * | 2003-04-04 | 2008-10-15 | 三輪精機株式会社 | オイルポンプおよびそれを使用したキャブチルト装置 |
US7134846B2 (en) * | 2004-05-28 | 2006-11-14 | Stanadyne Corporation | Radial piston pump with eccentrically driven rolling actuation ring |
DE102004037145B4 (de) * | 2004-07-30 | 2013-11-07 | Robert Bosch Gmbh | Kolbenpumpe mit kompaktem Aufbau |
DE102007038525A1 (de) * | 2007-08-16 | 2009-02-19 | Robert Bosch Gmbh | Pumpe, insbesondere Kraftstoffhochdruckpumpe |
DE102008055070A1 (de) * | 2008-12-22 | 2010-07-01 | Robert Bosch Gmbh | Antriebseinheit |
DE202009003133U1 (de) * | 2009-03-09 | 2009-06-04 | Baudat Gmbh & Co. Kg | Kolbenpumpe mit mehreren Kolben |
DE102009027576A1 (de) * | 2009-07-09 | 2011-01-13 | Robert Bosch Gmbh | Kraftstoffhochdruckpumpe |
DE102010028581A1 (de) * | 2010-05-05 | 2011-11-10 | Robert Bosch Gmbh | Exzenterlager |
DE102010039269A1 (de) | 2010-08-12 | 2012-02-16 | Robert Bosch Gmbh | Kolbenpumpen für eine hydraulische Fahrzeugbremsanlage |
JP6762229B2 (ja) * | 2016-12-27 | 2020-09-30 | 三菱重工機械システム株式会社 | 油圧機械 |
DE102017006724A1 (de) | 2017-07-14 | 2019-01-17 | Thomas Janning | Abdeckung mit Einzugsvorrichtung und Teilerspitze |
DE102019106531A1 (de) * | 2019-03-14 | 2020-09-17 | Baier & Köppel GmbH & Co. KG | Schmierstoffpumpe mit automatisch ankoppelnder Pumpeinheit und Verfahren zum Ankoppeln einer Pumpeinheit an eine Schmierstoffpumpe |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2271570A (en) * | 1940-07-31 | 1942-02-03 | Harvey S Pardee | Pump |
US3259074A (en) * | 1963-02-16 | 1966-07-05 | Teves Kg Alfred | Radial-piston machines |
DE1453664A1 (de) * | 1963-02-16 | 1969-03-06 | Teves Gmbh Alfred | Radialkolbenpumpe,vorwiegend fuer kraftfahrzeughydraulische Anlagen |
DE1653637C3 (de) * | 1967-06-24 | 1975-03-13 | Alfred Teves Gmbh, 6000 Frankfurt | Radialkolbenpumpe |
DE2243137A1 (de) * | 1972-09-01 | 1974-03-14 | Langen & Co | Radialkolbenpumpe |
US5642988A (en) * | 1991-02-15 | 1997-07-01 | Ina Walzlager Schaeffler Kg | Radial piston pump |
DE4204631A1 (de) * | 1992-02-15 | 1992-10-15 | Schaeffler Waelzlager Kg | Radialkolbenpumpe |
EP0666418B1 (de) * | 1994-01-29 | 1997-04-23 | Robert Bosch Gmbh | Hubkolbenpumpe |
-
1995
- 1995-02-03 DE DE19503621A patent/DE19503621A1/de not_active Withdrawn
-
1996
- 1996-01-17 WO PCT/DE1996/000046 patent/WO1996023974A1/de active IP Right Grant
- 1996-01-17 US US08/718,582 patent/US5897302A/en not_active Expired - Lifetime
- 1996-01-17 EP EP96900275A patent/EP0774072B1/de not_active Expired - Lifetime
- 1996-01-17 CN CN96190010A patent/CN1145657A/zh active Pending
- 1996-01-17 JP JP52315296A patent/JP3883570B2/ja not_active Expired - Fee Related
- 1996-01-17 DE DE59600286T patent/DE59600286D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
WO1996023974A1 (de) | 1996-08-08 |
JP3883570B2 (ja) | 2007-02-21 |
US5897302A (en) | 1999-04-27 |
DE59600286D1 (de) | 1998-07-23 |
CN1145657A (zh) | 1997-03-19 |
EP0774072A1 (de) | 1997-05-21 |
DE19503621A1 (de) | 1996-08-08 |
JPH09511307A (ja) | 1997-11-11 |
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