EP0728945B1 - Axiakolbenmaschine - Google Patents
Axiakolbenmaschine Download PDFInfo
- Publication number
- EP0728945B1 EP0728945B1 EP96101283A EP96101283A EP0728945B1 EP 0728945 B1 EP0728945 B1 EP 0728945B1 EP 96101283 A EP96101283 A EP 96101283A EP 96101283 A EP96101283 A EP 96101283A EP 0728945 B1 EP0728945 B1 EP 0728945B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sleeve
- piston machine
- axial piston
- cylinder drum
- cylinder
- 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
- 238000006073 displacement reaction Methods 0.000 claims description 8
- 239000004809 Teflon Substances 0.000 claims description 2
- 229920006362 Teflon® Polymers 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims 2
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 210000003734 kidney Anatomy 0.000 description 3
- 241000209035 Ilex Species 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
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
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
- F04B1/22—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block having two or more sets of cylinders or pistons
- F04B1/24—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block having two or more sets of cylinders or pistons inclined to the main shaft axis
Definitions
- the invention relates to an axial piston machine according to the preamble of Claim 1.
- DE-OS 41 28 615 and DE-OS 42 15 869 is an axial piston machine is known in which by means of structurally complex pumping devices in the Leakage oil line or in the housing leakage oil is sucked out to prevent splashing to reduce.
- An axial piston machine goes for. B. from the US-A-2733666.
- a rotatably mounted cylinder drum with axial cylinder bores, in which Pistons are each slidably received, which are supported on a lifting disc.
- the cylinder drum is at its stroke end of an axially extending Surround the sleeve body, the space between the cylinder drum and the Lifting disc partially covered.
- the object is in connection with the characterizing features of claim 1 solved with the generic features.
- the wings preferably extend between the the cylinder bores protruding piston sections up to a pitch circle that the same or a smaller diameter than the inner circle from the Has cylinder bores protruding piston sections.
- the axial piston machine shown in Figure 1 is a reversible Inclined axis machine with adjustable displacement and includes in a housing 1, a housing end plate 2, a drive shaft 3, a drive or lifting disk 4, one Control body 5 with an associated adjusting device 6 and a cylinder drum 7, to which a sleeve 8 is attached according to the invention.
- the housing 1 comprises a housing end wall 9 on one side closed cylindrical housing section and an adjacent to this elliptical housing section, which one of the housing end wall 9 has facing away open end through the housing end plate. 2 is closed.
- the radius of the right half of the cross section in FIG elliptical housing section takes a constant radius of the left Half of the housing cross-section in the direction of the housing end plate 2 constantly to; the constant radius of the left half of the housing cross-section is equal to that Radius of the cylindrical housing section.
- a leakage oil connection 10 which is a leakage oil line, is formed in the housing section connects to the tank (both not shown).
- the drive shaft 3 passes through a formed in the housing end wall 9 Through hole and is by means of two tapered roller bearings 11, 12 in cylindrical housing section rotatably mounted.
- the one in the housing 1 free end of the drive shaft 3 is formed in one piece provided flange-like extension, which forms the lifting disc 4.
- the control body 5 is a so-called control lens of biconvex shape, which in a circular support and pivot bearing 13 in the housing end plate 2 is arranged displaceably and within this camp by means of Adjustment device 6 can be fixed in any desired position. Adjustable stops 14, 15 limit the adjustment range of the control body 5.
- In the control body 5 are two in a known manner one on the other Pitch circle opposite control kidneys, not shown, formed with the pressure port and the suction port (also not shown) the Axial piston machine are connected.
- the adjusting device 6 is used to change the displacement volume Axial piston machine provided and does not include a pin 16 and one Shown actuator rod, which is also in a radial bore, not shown is guided displaceably in the housing end plate 2.
- the pin 16 is attached to the control rod and engages in a through hole 17 in Control body 5 a.
- the cylinder drum 7 is between the lifting disc 4 and the control body 5 arranged. It is supported in a known manner with hydrostatic support a concave bearing surface on the associated convex control surface of the Control body 5 rotatably and can thus kinematically on the latter adjust freely so that there is a high degree of parallelism between their bearing surface and the control surface of the control body 5 is reached.
- Axial cylinder bores evenly distributed on a pitch circle 18 are formed in a known manner in the cylinder drum 7 and open out on the flat end face facing the lifting disk 4. At the concave bearing surface of the cylinder drum 7 open these cylinder bores 18th via outlet channels 19 on the pitch circle of the control kidneys.
- Cylinder bores 18 are arranged so that pistons 20 can be moved back and forth. Your free ends protruding from the cylinder bores 18 are over Ball joints rotatably connected to the lifting disc 4. Every ball joint consists of a at the free end of the associated piston 20th trained ball head 21 and one formed in the lifting disc 4 Hollow ball section in which the ball head 21 is rotatably received. A so-called. Retaining device 22 keeps the ball heads within the Hollow ball sections.
- a compression spring 24 which also by means of a ball joint mounted in the lifting disc 4, protruding into the through hole 23 and the center drum 25 guiding the cylinder drum 7 on the lifting disk 4 supports and thus the cylinder drum 7 in contact with the control body 4th holds when there are no oil pressure forces.
- the cylinder drum 7 together with the piston 20 is rotated via the drive shaft 3. If, by actuating the adjusting device 6, the cylinder drum 7 has been pivoted into an inclined position with respect to the lifting disc 4, so that it assumes, for example, the maximum pivoting angle ⁇ max shown in FIG. 1, which corresponds to the maximum displacement volume of the axial piston machine, then all the pistons carry out 20 lifting movements; upon rotation of the cylinder drum 7 through 360 °, each piston 20 passes through a suction and a compression stroke, corresponding oil flows being generated, the supply and discharge of which via the outlet channels 19, the control kidneys and the suction and pressure channel.
- the moving parts leak oil from the leak gaps, especially during the Compression stroke from the cylinder bores 18, from, fills the free space, the so-called leakage oil chamber of the housing 1 and flows through the leakage oil connection 10 and the drain line to the tank.
- the leakage oil is located in the leakage oil chamber in this leakage oil line Overpressure, so that the parts rotating in it, especially those like that Playpen of a turbomachine acting piston sections between the Lifting disc 4 and the cylinder drum 7 correspondingly high splash losses cause that reduce the efficiency of the axial piston machine.
- the design of the sleeve section 28 with a continuously increasing diameter in the direction of the lifting disk 4 is selected in order to pivot the cylinder drum 7 in both swivel directions up to the maximum swivel angle defined by the respective stop 14 or 15 in the present exemplary embodiment given the spatial conditions within the housing 1 to enable; for the same reason the free edge of the sleeve section 28 facing the lifting disk 4 lies in a plane perpendicular to the sleeve axis.
- the axial dimension of the space 29 increases on the cross-sectional half corresponding to the swivel direction (cf. FIG.
- the sleeve 8 can be designed such that it covers the space 29 sufficiently even at the maximum swivel angle: in the case of non-reversible swashplate type axial piston machines that can be swiveled out only in one swivel direction, with the swashplate or lifting disc attached Sleeve or in swashplate machines with constant displacement, the free end of sleeve 8 may be cut obliquely so as to avoid the overlap-free area, so that it lies in an inclined plane corresponding to the maximum or constant swivel angle.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Description
- Fig. 1
- eine Axialkolbenmaschine im Axialschnitt, an deren Zylindertrommel eine Hülse in einer ersten Ausgestaltung befestigt ist,
- Fig. 2
- die in Fig. 1 gezeigte Zylindertrommel im Axialschnitt, an der eine Hülse in einer zweiten Ausgestaltung befestigt ist, und
- Fig. 3
- die in Figur 2 gezeigte Zylindertrommel bei Betrachtung von rechts in Figur 2.
Claims (9)
- Axialkolbenmaschine mit einem Lecköl aufnehmenden Gehäuse (1), das über einen Leckölanschluß (10) mit dem Tank verbunden ist,dadurch gekennzeichnet,mit einer im Gehäuse (1) auf einem Steuerkörper (5) drehbar gelagerten und sich kinematisch frei einstellbaren Zylindertrommel (7) mit axialen Zylinderbohrungen (18), in denen jeweils ein Kolben (20) verschiebbar aufgenommen ist, und mit einer Hubscheibe (4), an der die aus den Zylinderbohrungen (18) herausragenden freien Enden der Kolben (20) abgestützt sind,mit einer an der Zylindertrommel (7) oder an der Hubscheibe (4) befestigten, sich axial erstreckenden Hülse (8), die den Raum (29) zwischen der Zylindertrommel (7) und der Hubscheibe (4) zumindest teilweise überdeckt und eine allseits geschlossene, die Leckölströmung in dem Raum (29) beruhigende Wandung aufweist,
daß an der inneren Wandungsfläche (30) der Hülse (8) radial nach innen verlaufende Flügel (31) angebracht sind. - Axialkolbenmaschine nach Anspruch 1,
dadurch gekennzeichnet,
daß die Hülse (8) eine glatte äußere Wandungsfläche (26) aufweist. - Axialkolbenmaschine nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß die Hülse (8) aus Teflon besteht. - Axialkolbenmaschine nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet,
daß die Flügel (31) sich zwischen den aus den Zylinderbohrungen (18) herausragenden Kolbenabschnitten erstrecken. - Axialkolbenmaschine nach Anspruch 4,
dadurch gekennzeichnet,
daß die freien Enden der Flügel (31) auf einem Teilkreis angeordnet sind, der den gleichen oder einen kleineren Durchmesser als der Innenkreis der aus den Zylinderbohrungen (18) herausragenden Kolbenabschnitte aufweist. - Axialkolbenmaschine nach wenigstens einem vorhergehenden Anspruch,
dadurch gekennzeichnet,
daß die Hülse (8) in Richtung ihres freien Endes einen stetig zunehmenden Durchmesser aufweist. - Axialkolbenmaschine nach wenigstens einem vorhergehenden Anspruch,
dadurch gekennzeichnet,
daß der freie Rand der Hülse (8) in einer zur Hülsenachse senkrechten Ebene liegt. - Axialkolbenmaschine in Schrägscheibenbauweise mit einer Stromrichtung und verstellbarem Verdrängungsvolumen nach wenigstens einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet,
daß die Hülse (8) an der Hubscheibe (4) befestigt ist und ihr der Zylindertrommel (7) zugewandter freier Rand in einer zur Hülsenachse schrägen Ebene liegt, die mit zunehmender Verstellung der Axialkolbenmaschine in Richtung des maximalen Verdrängungsvolumens zunehmend in Richtung einer zur Radialebene der Zylindertrommel (7) parallelen Lage schwenkt. - Axialkolbenmaschine in Schrägscheibenbauweise mit einer Stromrichtung und konstantem Verdrängungsvolumen nach wenigstens einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet,
daß die Hülse (8) an der Hubscheibe (4) befestigt ist und ihr der Zylindertrommel (7) zugewandter freier Rand in einer zur Hülsenachse schrägen Ebene liegt, die ihrerseits in der Radialebene der Zylindertrommel (7) liegt.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29503060U | 1995-02-23 | ||
| DE29503060U DE29503060U1 (de) | 1995-02-23 | 1995-02-23 | Axialkolbenmaschine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0728945A1 EP0728945A1 (de) | 1996-08-28 |
| EP0728945B1 true EP0728945B1 (de) | 1998-08-12 |
Family
ID=8004384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96101283A Expired - Lifetime EP0728945B1 (de) | 1995-02-23 | 1996-01-30 | Axiakolbenmaschine |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0728945B1 (de) |
| DE (2) | DE29503060U1 (de) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29503060U1 (de) * | 1995-02-23 | 1995-04-06 | Brueninghaus Hydromatik GmbH, 89275 Elchingen | Axialkolbenmaschine |
| DE19649195C1 (de) | 1996-11-27 | 1998-01-08 | Brueninghaus Hydromatik Gmbh | Axialkolbenmaschine mit Lagerspülung |
| JP3703610B2 (ja) * | 1997-08-06 | 2005-10-05 | カヤバ工業株式会社 | アキシャルピストンポンプまたはモータ |
| DE19829060B4 (de) * | 1998-06-29 | 2007-01-04 | Brueninghaus Hydromatik Gmbh | Hydrostatische Maschine mit Rückstaueinrichtung im Schmierkanal |
| DE19914266C2 (de) * | 1999-03-29 | 2002-02-28 | Brueninghaus Hydromatik Gmbh | Axialkolbenmaschine und Steuerkörper für eine Axialkolbenmaschine |
| DE19914268C2 (de) * | 1999-03-29 | 2002-02-28 | Brueninghaus Hydromatik Gmbh | Axialkolbenmaschine und Steuerkörper für eine Axialkolbenmaschine |
| DE102004021885B4 (de) * | 2004-05-04 | 2009-10-01 | Zf Lenksysteme Gmbh | Rotations-Hydropumpe |
| CN102913408A (zh) * | 2012-11-15 | 2013-02-06 | 上海电气液压气动有限公司 | 一种斜轴式柱塞液压泵/马达 |
| CN102943739A (zh) * | 2012-11-15 | 2013-02-27 | 上海电气液压气动有限公司 | 一种液压马达的排量限制机构 |
| AT513773B1 (de) * | 2012-12-18 | 2015-03-15 | Wacker Neuson Linz Gmbh | Fahrantrieb für eine mobile Arbeitsmaschine |
| CN105020131B (zh) * | 2014-04-24 | 2018-08-28 | 北京华德液压工业集团有限责任公司 | 具有叶轮结构缸体的轴向柱塞泵 |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2733666A (en) * | 1956-02-07 | Axial piston pumps | ||
| FR588614A (fr) * | 1924-09-09 | 1925-05-12 | American Pulley Co | Perfectionnements dans les suspensions pour arbres de machines |
| US3241495A (en) * | 1963-08-12 | 1966-03-22 | American Brake Shoe Co | Construction for axial piston pump or motor |
| US3890882A (en) * | 1970-08-03 | 1975-06-24 | Wilfred S Bobier | Fluid device having plastic housing and means for mounting a cylinder barrel |
| CA979733A (en) * | 1971-09-20 | 1975-12-16 | Wilfred S. Bobier | Fluid device having interchangeable displacement control means |
| DE2341013C2 (de) * | 1973-08-14 | 1982-08-05 | Alfred Teves Gmbh, 6000 Frankfurt | Radialkolbenpumpe |
| DE3125118A1 (de) * | 1981-06-26 | 1983-01-13 | Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen | "hydrostatische axialkolbenmaschine" |
| DE3239175C1 (de) * | 1982-10-22 | 1984-03-01 | Hydromatik GmbH, 7915 Elchingen | Lagerung des triebflansches einer axialkolbenmaschine in schraegachsen-bauart. |
| DE3540959A1 (de) * | 1984-12-22 | 1986-07-03 | Leybold-Heraeus GmbH, 5000 Köln | Oelfoerdereinrichtung fuer vakuumpumpen |
| DE3638890A1 (de) * | 1986-07-31 | 1988-02-04 | Hydromatik Gmbh | Axial-kolbenmaschine mit einer einrichtung zum spuelen des kreislaufs |
| DD265200A1 (de) * | 1987-09-11 | 1989-02-22 | Karl Marx Stadt Ind Werke | Hydrostatische kolbenmaschine |
| US4932310A (en) * | 1989-06-01 | 1990-06-12 | The Oilgear Company | Bearing lubrication in axial piston fluid devices |
| DE4128615C1 (de) * | 1991-08-28 | 1993-01-14 | Hydromatik Gmbh, 7915 Elchingen, De | |
| DE4215869C2 (de) * | 1992-05-14 | 1996-01-11 | Hydromatik Gmbh | Hydrostatische Maschine mit Leckölabführung |
| DE29503060U1 (de) * | 1995-02-23 | 1995-04-06 | Brueninghaus Hydromatik GmbH, 89275 Elchingen | Axialkolbenmaschine |
-
1995
- 1995-02-23 DE DE29503060U patent/DE29503060U1/de not_active Expired - Lifetime
-
1996
- 1996-01-30 DE DE59600410T patent/DE59600410D1/de not_active Expired - Lifetime
- 1996-01-30 EP EP96101283A patent/EP0728945B1/de not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE59600410D1 (de) | 1998-09-17 |
| EP0728945A1 (de) | 1996-08-28 |
| DE29503060U1 (de) | 1995-04-06 |
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