EP1311760B1 - Hydraulische radialkolbenmaschine - Google Patents
Hydraulische radialkolbenmaschine Download PDFInfo
- Publication number
- EP1311760B1 EP1311760B1 EP01945062A EP01945062A EP1311760B1 EP 1311760 B1 EP1311760 B1 EP 1311760B1 EP 01945062 A EP01945062 A EP 01945062A EP 01945062 A EP01945062 A EP 01945062A EP 1311760 B1 EP1311760 B1 EP 1311760B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- axis
- section
- fact
- rotation
- 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
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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
- 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
- F04B1/047—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 outer 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
- F04B1/0404—Details or component parts
- F04B1/0439—Supporting or guiding means for the pistons
Definitions
- the invention relates to a hydraulic radial piston machine, the Features from the preamble of claim 1.
- Such a hydraulic radial piston machine is known from DE 196 18 793 A1 known.
- the rotor is located inside the cam ring and has a large number from with respect to its axis of rotation radially aligned piston receptacles, the after outside to the cam ring are too open.
- In each piston seat is a piston, of which a cylindrical roller is supported in a bearing receiver, the abuts a lift curve of the cam ring.
- each piston receptacle has a first part receiving the is radially outermost in the rotor, and a second part of the recording, the closer to the axis of rotation than the first part receiving and its cross section smaller than the cross section of the first part of the photograph is.
- Each piston has a first piston portion slidably guided in the first part receiver is, and a smaller cross-section than the first piston portion having second piston portion, which is slidably guided in the second part of recording is.
- the free spaces radially inward than the first piston portion namely an annular space perpendicular to the piston axis through the wall of the first sub-receptacle and through the second piston portion and axially through the Stages on the piston and in the piston receptacle is limited, and a fully cylindrical Space behind the second piston portion are fluidly open with each other connected, so that the effective pressure surface by the large cross-section of given the first piston portion.
- Led is a piston in the first piston section and at the end of the second piston portion, so that the guide length is great.
- the fluidic connection between the annulus and the space behind the second piston portion may be defined by bores within the second piston portion, through a longitudinal groove in the second part of the recording or even how this is shown in EP 0 607 069 B1 and in DE 196 18 793 A1, by parallel to the piston axis or also conically lying to this flattening on be made second piston section.
- the semicircular sections in cross-section also bring with it, that the rollers in the direction of their axes of rotation shorter than the piston receivers and the pistons are and it is necessary, they by around the rotor encircling rings secure in its axial position.
- the invention is based on the object, a hydraulic radial piston machine, having the features of the preamble of claim 1, so seizuentwickeln that for a given size, a larger displacement per piston is possible and thus a larger torque can be generated and that the rollers secured in a simple manner in the axial direction in position are.
- the desired goal can be in a generic hydraulic radial piston machine achieve according to the invention in that, as in the characterizing Part of claim 1 is given, the piston receivers have two perpendicular to the rotational axis of the rollers aligned wall sections and that the distance between the two end faces of a roll only slightly smaller than the distance between the two flat wall sections of the piston receivers is.
- the piston receivers have two perpendicular to the rotational axis of the rollers aligned wall sections and that the distance between the two end faces of a roll only slightly smaller than the distance between the two flat wall sections of the piston receivers is.
- the two become flat Used wall sections for axially securing the rollers.
- the roles are longer than with circular piston receivers and circular pistons with same extent in the axial direction and in the peripheral direction.
- Corresponding larger can be their bearing surface in the piston and their investment line or contact surface be made on the Hubring.
- the components are the same Torque less burdened or assets without damage a higher Transmit torque.
- the two flat wall sections are preferred a piston receiving narrower than the diameter of a roll.
- the Rollers are offset at both ends to a smaller diameter collar whose diameter is at most as large as the width of a plane wall of a Piston receptacle is. This design allows the contour of the piston receivers with a milling tool and with a grinding tool, whose diameter is greater than half the difference between the peripheral Extension of a piston seat and the diameter of a roller.
- Such Milling tool is more stable and works faster than a smaller diameter Tool.
- the bundles on the end faces of a role are so short As possible, allow the rollers a large support surface on the piston and a long one Have support on the cam ring.
- each level Wall portion of a piston receiving a constant radius exhibiting curved wall section, which preferably at least approximately extends over ninety degrees.
- the radius of this wall section agrees with the Radius of the tools used to make the contour of the piston receptacles is, and thus can be edited quickly.
- the radius of a plane Wall section subsequent curved wall section of the first part of the recording and the radius of the second circular part of a receiving piston receiving the same so that both partial shots with the same milling and grinding tools can be finished.
- radial piston machine is mainly used as a radial piston motor and has a housing 12, which consists essentially of two housing pots 13 and 14 and an intermediate this arranged lifting ring 15 composed. The mentioned three parts are held coaxial and fluid-tight by means of screws 10 together.
- the inner surface the cam ring 15 is designed as a lifting cam 16 with a plurality of inwardly projecting Cam 17 is formed.
- Within the cam ring 15 is a rotor 18, which coincides about a coincident with the axis of the housing parts axis of rotation 19 is rotatable.
- the rotor 18 has an internal toothing, centric passage 20 in which an end portion 21 of an output shaft 22, the outer teeth corresponding to one of the internal teeth of the passage 20 is provided, is received axially displaceable.
- the output shaft 22 is rotatably supported by a bearing assembly 30 relative to the housing 12.
- the bearing assembly comprises two tapered roller bearings 31 and 32, which in Housing part 13 are housed and transmit high axial and radial forces can.
- the second end portion 33 of the output shaft 22 protrudes from the housing part 13 out and has outside of this a shaft flange 34 for attachment on a drive element, not shown, of a device to be driven, for example, on a wheel of a supercharger.
- a first partial receptacle 36 is located on the outside of the rotor 18 and has a large, deviating from the circular shape and with respect to a Central axis 37 twice symmetrical cross section, as shown in more detail in FIG evident. Double symmetrical means that the cross section only after a rotation of 180 degrees about the central axis again with himself for Dekkung comes.
- the second part 38 which is inward to the partial recording 36 connects, is circular cylindrical in cross-section, wherein the diameter is substantially smaller than the extension of the first part of receiving 36 toward the axis of rotation 19 and in the peripheral direction of the rotor 18.
- the axis of the partial recording 38 coincides with the central axis 37, which is the axis of the entire piston receiving 35 can be designated together.
- the two parts 36 and 38 merge in an annular shoulder 39 into each other, perpendicular to the Central axis 37 is.
- the cross section of the part holder 36 remains from the shoulder 39 from to the outside of the rotor 18 is the same.
- the first partial receptacle 36 of a piston receptacle 35 has a specific one first maximum dimension in the direction of the axis of rotation 19 and a something smaller second maximum dimension perpendicular to a through the rotation axis 19 and
- the central axis 37 spanned level 41. It has two levels, each other in the direction of the axis of rotation 19 opposite, that is parallel to a perpendicular on the rotation axis 19 standing plane 42 lying wall sections 43 and 44th each of which lies symmetrically on both sides of the plane 41 and perpendicular to this level 41 is slightly less than half the width of the maximum extent of the Piston receptacle 35 in this direction.
- Every page is closed to everyone planar wall portion 43, 44 a wall portion 45, which has a constant Curvature, that is, has constant radius and extends over an angle of about 75 extends to 80 degrees.
- the radius is slightly larger than a quarter of the distance the two flat wall sections 43 and 44 from each other.
- the transition between the one end of a wall portion 43, 44 and a Wall section 45 is continuous.
- the transition between the second end a wall portion 45 and an adjoining, between the two second ends of two wall sections 45 extending wall portion 46th is continuous, the two wall sections 46, seen from the central axis 37, slightly bent outwards and in the plane 42 the greatest distance have each other.
- Overall therefore, has the first part of a receiving 36 receiving a piston 35 a strongly rounded, a rectangle-like cross-section.
- the second sub-receptacle 38 of a piston receptacle 35 has a circular Cross-section, so has the shape of a circular cylinder.
- the radius of this circular cylinder is equal to the radius of the wall portions 45 of the first sub-receptacle 36, so that both partial images with the same radius of the second partial recording finished tools can be finished.
- each piston receptacle 35 is a piston 50, on which one accordingly the two sub-receptacles 36 and 38 of a piston receptacle 35 two in Direction of the central axis 37 one behind the other and with respect to their circumferential Outer surface mutually distinguishable piston sections 51 and 52nd can recognize.
- the first piston portion 51 is in the first part receiver 36 a piston receiving 35 slidably guided and has under consideration the game provided for his mobility the same cross-section as the first sub-receptacle 36 of the piston seat 35.
- In the piston section 51 runs in the vicinity of the lower end a radially open groove 53 around, in the a metallic sealing ring 54 is located on the wall of the part holder 36th slides.
- the second piston portion 52 is formed as a two-flat and has only leadership function. He has at least one for his leadership function certain distance from its lower end outside the two flats 55 has a diameter which corresponds to the diameter of the second part receiver 38 a piston receptacle 35 corresponds.
- the two flats 55 are vertical on the axis of rotation 19 of the rotor. In the direction of the piston axis, the same is the center axis 37 of a piston receptacle, the piston portion 52 is so long that it is still immersed in the sub-receptacle 38 in each stroke position of the piston 50, so that the piston except in the sub-receptacle 36 always in the partial recording 38 is guided.
- About the flats 55 are the free space, the Piston in the sub-receptacle 38 leaves, and the free space, the piston 50 below the sealing ring 54 in the sub-receptacle 36 between itself and the shoulder 39 leaves, fluidly connected to each other open.
- the piston portion 51 formed in the manner of a half-pipe, through which a continuous bearing seat 56 formed with a bearing shell 57 for a roller 58 is, which rests on the cam ring 15.
- the axes 59 of the rollers are parallel to the axis of rotation 19 of the rotor 18.
- a roller 58 is in the direction of its axis slightly shorter than the distance between the two flat wall sections 44 a piston seat 35 and is located each of these wall sections with a flat face 60 opposite.
- the rollers 58 are in each stroke position the piston 50 is secured in its axial position.
- the roles are very long and Therefore have a large investment line or contact surface on the lift curve 16.
- both planar wall portions 44 are in a direction perpendicular to the plane 41 is narrower than the diameter of a roller 58. Therefore, each end surface is 60 formed on a collar 61 in which a roller 58 at its end to a smaller, about the width of the wall portions 44 corresponding diameter is discontinued.
- the diameter of the coils 61 is so large, that the end faces 60 and the flat wall portions 44 of the piston receivers even opposite in the outermost stroke position of a piston 50 and secure the rollers 58 in the axial direction.
- Each piston receptacle 35 is one in the rotor 18 parallel to its axis of rotation 19th extending, emanating from the one end face of the rotor and in the partial recording Assigned 38 opening access hole 65, on the operation of the radial piston motor Hydraulic fluid is added and removed. This is done via a Commutator 66, which is arranged fluid-tight and rotationally fixed in the housing part 14. Between him and the housing part 14 are two separate annular spaces 67 and 68 formed with an outwardly leading inflow channel 69 and Outflow channel 70 are connected. From the rotor 18 facing end side of the commutator 66 evenly distributed one of the number of cams 17th the lift curve corresponding number of axial channels 71, which in the annulus 67 lead.
- each two axial channels 71 also extend from the said end face of the commutator and at the same distance from the Fulcrum 19 as the axial channels 71 shorter axial channels 72, with the annulus 68 are connected.
- the emergence of a roll 58 on a Cam 17 of the lift curve from the working space of the corresponding piston seat 35 hydraulic fluid through the bore 65 of the rotor 18 and one of the Axial channels 71 displaced without pressure.
- the bore 65 except overlap with the corresponding axial channel 71 and shortly thereafter in coincidence with one of the axial channels 72.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Hydraulic Motors (AREA)
Description
- Figur 1
- das Ausführungsbeispiel in einem Längsschnitt, wobei in der oberen Hälfte der Längsschnitt in einer ersten Ebene und in der unteren Hälfte in einer zweiten Ebene liegt und sich der sichtbare Radialkolben in seinem äußeren Totpunkt befindet,
- Figur 2
- einen Ausschnitt aus Figur 1 im Bereich des sichtbaren Radialkolbens, der sich nun jedoch in seinem inneren Totpunkt befindet,
- Figur 3
- eine Ansicht von radial außen auf eine Kolbenaufnahme und einen darin befindlichen Radialkolben und
- Figur 4
- eine Seitenansicht des Radialkolbens aus Figur 3 in Richtung der Drehachse der Rolle.
Claims (8)
- Hydraulische Radialkolbenmaschine mit einem gehäusefesten, insbesondere mehrhubigen Hubring (15),
mit einem um eine Drehachse (19) drehbar gegenüber dem Hubring (15) gelagerten Rotor (18), der eine Vielzahl von bezüglich der Drehachse (19) radial ausgerichteten Kolbenaufnahmen (35) aufweist,
mit einer Vielzahl von Kolben (50), von denen jeweils einer in einer Kolbenaufnahme (35) verschiebbar gelagert ist und die wenigstens über einen Teil ihrer Länge einen von einer Kreisform abweichenden Führungs- und Dichtquerschnitt aufweisen, der mit einem entsprechend von der Kreisform abweichenden, bis zur Außenseite des Rotors gleichbleibenden Führungs- und Dichtquerschnitt der Kolbenaufnahmen (35) übereinstimmt,
und mit von den Kolben (50) in Lageraufnahmen (56) getragenen und mit ihrer Drehachse (59) in Richtung der Drehachse des Rotors (18) ausgerichteten zylindrischen Rollen (58), über die die Kolben (50) am Hubring (15) abstützbar sind und die zwei senkrecht zu ihrer Drehachse (59) verlaufende, einander abgewandte Stirnflächen (60) haben,
dadurch gekennzeichnet, daß die Kolbenaufnahmen (35) zwei senkrecht zu der Drehachse (59) der Rollen (58) ausgerichtete Wandabschnitte (44) aufweisen und daß der Abstand der beiden Stirnflächen (60) einer Rolle (58) nur geringfügig kleiner als der Abstand der beiden ebenen Wandabschnitte (44) der Kolbenaufnahmen (35) ist. - Hydraulische Radialkolbenmaschine nach Anspruch 1, dadurch gekennzeichnet, daß die beiden ebenen Wandabschnitte (44) einer Kolbenaufnahme (35) schmäler sind als der Durchmesser einer Rolle (58) und daß eine Rolle (58) an beiden Enden zu einem im Durchmesser kleineren Bund (61) abgesetzt ist, dessen Durchmesser höchstens so groß wie die Breite eines ebenen Wandabschnitts (44) einer Kolbenaufnahme (35) ist.
- Hydraulische Radialkolbenmaschine nach Anspruch 2, dadurch gekennzeichnet, daß die Breite eines ebenen Wandabschnitts (44) einer Kolbenaufnahme (35) nur etwa sechzig Prozent des Durchmessers einer Rolle (58) beträgt.
- Hydraulische Radialkolbenmaschine nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß die Ausdehnung des Bundes (61) in Richtung der Achse (59) einer Rolle (58) etwa ein Vierzigstel der Gesamtlänge einer Rolle (58) beträgt.
- Hydraulische Radialkolbenmaschine nach einem vorhergehenden Anspruch, dadurch gekennzeichnet, daß sich beidseits an jeden ebenen Wandabschnitt (44) einer Kolbenaufnahme (35) ein einen konstanten Radius aufweisender gekrümmter Wandabschnitt (45) anschließt.
- Hydraulische Radialkolbenmaschine nach Anspruch 5, dadurch gekennzeichnet, daß sich der gekrümmte Wandabschnitt (45) wenigstens annähernd über neunzig Grad erstreckt.
- Hydraulische Radialkolbenmaschine nach einem vorhergehenden Anspruch, dadurch gekennzeichnet, daß die Kolbenaufnahmen (35) jeweils eine sich radial ganz außen im Rotor (18) befindliche, erste Teilaufnahme (36) mit dem von der Kreisform abweichendem Querschnitt und eine im Querschnitt kleinere zweite Teilaufnahme (38) aufweisen, die sich näher an der Drehachse (19) des Rotors (18) als die erste Teilaufnahme (36) befindet, in die die Kolben (50) mit einem Führungsfortsatz (52) eintauchen und deren Querschnitt kreisrund ist.
- Hydraulische Radialkolbenmaschine nach den Ansprüchen 6 und 7, dadurch gekennzeichnet, daß der Radius eines sich an einen ebenen Wandabschnitt (44) anschließenden gekrümmten Wandabschnitts (45) und der Radius der zweiten, kreisrunden Teilaufnahme (38) einer Kolbenaufnahme (35) gleich sind.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10041318A DE10041318A1 (de) | 2000-08-23 | 2000-08-23 | Hydraulische Radialkolbenmaschine |
DE10041318 | 2000-08-23 | ||
PCT/EP2001/004803 WO2002016769A1 (de) | 2000-08-23 | 2001-04-28 | Hydraulische radialkolbenmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1311760A1 EP1311760A1 (de) | 2003-05-21 |
EP1311760B1 true EP1311760B1 (de) | 2005-09-14 |
Family
ID=7653479
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01945062A Expired - Lifetime EP1311760B1 (de) | 2000-08-23 | 2001-04-28 | Hydraulische radialkolbenmaschine |
Country Status (5)
Country | Link |
---|---|
US (1) | US7028600B2 (de) |
EP (1) | EP1311760B1 (de) |
JP (1) | JP4658446B2 (de) |
DE (2) | DE10041318A1 (de) |
WO (1) | WO2002016769A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010032056B4 (de) * | 2010-07-23 | 2019-11-28 | Robert Bosch Gmbh | Kolbeneinheit |
DE102010032058A1 (de) | 2010-07-23 | 2012-01-26 | Robert Bosch Gmbh | Kolbeneinheit |
WO2014136214A1 (ja) | 2013-03-06 | 2014-09-12 | 三菱重工業株式会社 | 油圧機械及び再生エネルギー発電装置 |
EP3115610B1 (de) * | 2015-07-06 | 2021-04-14 | Goodrich Actuation Systems Limited | Hydraulikpumpe |
FR3100583B1 (fr) * | 2019-09-06 | 2021-09-24 | Poclain Hydraulics Ind | Piston pour une machine hydraulique à pistons |
FR3111165B1 (fr) * | 2020-06-09 | 2022-07-22 | Poclain Hydraulics Ind | Machine hydraulique comprenant des paliers de support de la partie tournante |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3146625A1 (de) * | 1981-09-04 | 1983-03-17 | Robert Bosch Gmbh, 7000 Stuttgart | Kraftstoff-einspritzpumpe |
DE3531632A1 (de) * | 1985-09-05 | 1987-03-12 | Rexroth Mannesmann Gmbh | Radialkolbenmaschine |
DE4004932C2 (de) | 1990-02-16 | 1995-04-13 | Rexroth Mannesmann Gmbh | Radialkolbenmaschine |
DE4037455C1 (de) * | 1990-11-24 | 1992-02-06 | Mannesmann Rexroth Gmbh, 8770 Lohr, De | |
FR2700364B1 (fr) * | 1993-01-13 | 1995-03-31 | Poclain Hydraulics Sa | Piston de moteur hydraulique. |
JPH08246978A (ja) * | 1995-03-13 | 1996-09-24 | Zexel Corp | 内面カム式噴射ポンプ |
DE19618793B4 (de) * | 1996-05-10 | 2007-01-18 | Bosch Rexroth Aktiengesellschaft | Radialkolbenmaschine |
-
2000
- 2000-08-23 DE DE10041318A patent/DE10041318A1/de not_active Withdrawn
-
2001
- 2001-04-28 EP EP01945062A patent/EP1311760B1/de not_active Expired - Lifetime
- 2001-04-28 WO PCT/EP2001/004803 patent/WO2002016769A1/de active IP Right Grant
- 2001-04-28 US US10/344,801 patent/US7028600B2/en not_active Expired - Fee Related
- 2001-04-28 JP JP2002521832A patent/JP4658446B2/ja not_active Expired - Fee Related
- 2001-04-28 DE DE50107443T patent/DE50107443D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US7028600B2 (en) | 2006-04-18 |
JP4658446B2 (ja) | 2011-03-23 |
US20040040435A1 (en) | 2004-03-04 |
DE10041318A1 (de) | 2002-03-07 |
EP1311760A1 (de) | 2003-05-21 |
WO2002016769A1 (de) | 2002-02-28 |
DE50107443D1 (de) | 2005-10-20 |
JP2004507638A (ja) | 2004-03-11 |
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