WO1998023860A1 - Axialkolbenmaschine mit lagerspülung - Google Patents
Axialkolbenmaschine mit lagerspülung Download PDFInfo
- Publication number
- WO1998023860A1 WO1998023860A1 PCT/EP1997/005870 EP9705870W WO9823860A1 WO 1998023860 A1 WO1998023860 A1 WO 1998023860A1 EP 9705870 W EP9705870 W EP 9705870W WO 9823860 A1 WO9823860 A1 WO 9823860A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- axial piston
- piston machine
- flushing
- mirror body
- cylinder drum
- Prior art date
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
- F04B1/12—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
- F04B1/2014—Details or component parts
-
- 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
- F04B1/26—Control
- F04B1/30—Control of machines or pumps with rotary cylinder blocks
- F04B1/32—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block
- F04B1/328—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block by changing the inclination of the axis of the cylinder barrel relative to the swash plate
Definitions
- the invention relates to an axial piston machine in a swivel slide design with an internal bearing flush.
- the invention is based on an axial piston machine according to the preamble of claim 1, e.g. is known from DE 42 15 869 Cl.
- This document discloses an axial piston machine in a swivel slide design.
- the known axial piston machine comprises a pivotable cylinder drum, and a drive shaft mounted in a drive shaft bearing.
- the drive shaft is connected to a drive shaft flange, in which movable pistons are articulated in cylinder bores of the cylinder drum and on which the cylinder drum is supported via a central pin.
- a lenticular control mirror body is provided between the cylinder drum and an end plate, which has control greases for the cyclical connection of the cylinder bores to the working lines.
- an adjusting device To pivot the cylinder drum together with the control mirror body, an adjusting device, not shown in detail in DE 42 15 869 Cl, is provided.
- a flushing channel is provided in the center pin and in the drive shaft. The leakage oil flowing out of the drive shaft bearing due to the bearing flushing is conveyed away in the direction of a housing opening by a paddle wheel provided on the drive shaft flange.
- a further disadvantage is that the feed pressure setting for the flushing agent cannot be adjusted from the outside, since the feed pressure valve is not accessible from the outside, and the flush valve integrated in the control mirror body is dependent on the nominal size, since the distance between the control kidneys is different for each nominal size of the axial piston machines. It has also been shown that the amount of detergent introduced into the flushing channel by the flush valve integrated in the control mirror body is not sufficient for some applications.
- the invention is therefore based on the object of providing a suitable flushing agent supply for an axial piston machine in a swivel slide design.
- the invention is based on the knowledge that the flushing agent channel for the flushing agent supply to the drive shaft bearing and, if necessary.
- the flushing and feed pressure valve can then be arranged outside the control mirror body, which considerably simplifies the construction of the control mirror body, so that the mechanical strength of the control mirror body is not weakened by the measures required for the formation of the flushing channel.
- the central bore of the control mirror body for receiving the adjusting pin can at the same time be part of the detergent channel, so that no structural changes are necessary on the control mirror body to form the detergent channel.
- a bore can be formed in the adjusting pin which forms the detergent channel in this area and opens into the central bore of the control mirror body. The only necessary modification of the adjusting pin for the detergent channel is the formation of this hole.
- the bore can be made with such a small diameter that the mechanical strength of the adjusting pin is insignificantly weakened by this measure, in particular by less than 1%.
- the adjusting device can have a hydraulically actuated adjusting piston, in which a transverse bore is formed in order to receive the adjusting pin.
- the actuating piston can be guided in a longitudinal bore formed in an end plate, which is provided with a longitudinal groove, into which the bore of the actuating pin opens either directly or indirectly via the transverse bore of the actuating piston.
- the longitudinal groove ensures that detergent is supplied in every position of the actuating piston and the actuating pin inserted in it. Regardless of the pivoting position of the cylinder drum, the control mirror body and the adjusting pin inserted in the adjusting piston, a connection of the bore of the adjusting pin with the longitudinal groove provided in the end plate is ensured.
- the longitudinal groove can according to claim 6 with a Supply line for the detergent be connected.
- Introducing the detergent into the detergent channel can be at the mouth of the
- the flushing and feed pressure valve is particularly accessible and adjustable from the outside.
- the detergent channel according to the invention can be next to one
- Detergent supply to the drive shaft bearing also serves to flush the housing. This results in a particularly favorable heat balance
- Axial piston machine because the heat loss from the axial piston machine is also dissipated by the flushing agent.
- Fig. 1 shows a longitudinal section through an embodiment of the inventive
- FIG. 2 shows a section along line A-A in FIG. 1.
- Fig. 1 shows an exemplary embodiment of an axial piston machine according to the invention in a swivel slide construction in an axial longitudinal section.
- a drive shaft 3 is rotatably mounted via two roller bearings 4 and 5.
- a drive shaft flange 6 is integrally formed on the drive shaft 3.
- a cylinder drum 8 is arranged to be pivotable about a pivot axis perpendicular to the plane of the drawing.
- a plurality of cylinder bores 9, 10 arranged on a pitch circle with the same distance are provided.
- pistons 11, 12 are slidably guided, which are formed outside of the cylinder drum 8 into ball heads 13, 14.
- the ball heads 13, 14 of the pistons 11, 12 are articulated in spherical bearings 15 of the drive shaft flange 6.
- the cylinder drum 8 is rotatably and pivotably mounted on the drive shaft flange 6 via a center pin 16. Between a cover plate 17 and the cylinder drum 8 on the side of the cylinder drum 8 facing away from the drive shaft flange 6 there is arranged a control mirror body 18 which is lens-shaped in the embodiment. The cylinder drum 8 is biased against the control mirror body 18 or the end plate 17 via a spring 19 provided in the central pin 16.
- the central pin 16 also has a ball head 20 which is rotatably and pivotably mounted in a further spherical bearing 21 of the drive shaft flange 6.
- the control mirror body 18 When pivoting the cylinder drum 8 shown in FIG. 1 in the maximally pivoted-out position, the control mirror body 18 serves as a pivoting slide.
- a partially cylindrical or spherical boundary surface 22 of the control mirror body 18 located opposite the cylinder drum 8 slides along a correspondingly shaped sliding surface 23 of the end plate 17 when the cylinder drum 8 is adjusted.
- the adjusting screw 24 is used to set the minimum displacement volume of the axial piston machine 1.
- the control mirror body 18 has a central bore 24, into which an adjusting pin 25 is inserted so that the adjusting pin 25 is pivotable and axially displaceable in the central bore 24 to compensate for the pivoting movement of the control mirror body 18.
- an actuating device for the hydraulic adjustment of the pivoting angle of the cylinder drum 8, is provided, which comprises an actuating piston 28 which can be displaced in a longitudinal bore 27 of the end plate 17.
- the actuating pin 25 is inserted into a transverse bore 29 of the actuating piston 28.
- the actuating piston 28 can be acted upon by an actuating pressure via a signal pressure line that can be connected to a connection 30 such that the actuating piston 28 can be displaced against a return spring 31.
- the axial piston machine 1 is pivoted back in the direction of a smaller displacement volume. According to the axial piston machine 1 is provided with a detergent channel for supplying detergent to the drive shaft bearing 4, 5.
- the flushing agent channel comprises a supply line 40 provided in the end plate 17, to which a flushing and feed pressure valve 41 is connected.
- the flushing and feed pressure valve 41 is arranged externally on the end plate 17 and is therefore easily accessible from the outside for setting the flushing agent pressure and the amount of flushing agent.
- the feed line 40 opens into a longitudinal groove 42 which is provided peripherally on the longitudinal bore 27.
- a boring 43 is provided in the adjusting pin 25, which either opens directly into the longitudinal groove 42 on the side remote from the control mirror body 18 or, as in the embodiment shown in FIG. 1, opens out indirectly into the longitudinal groove 42 via the transverse boring 29.
- the length of the longitudinal groove 42 is dimensioned so that a connection between the Bohmng 43 of the adjusting pin 25 and the longitudinal groove 42 is ensured in each pivoting position of the cylinder drum 8.
- FIG. 2 Shown is a cross section of the end plate 17 and the longitudinal bore 27 provided in the end plate 17 for guiding the actuating piston 28. It can be seen that the adjusting pin 25 shown only in part and inserted into the transverse bore 29 of the adjusting piston 28. As already described, the adjusting pin 25 has an axial Bohmng 43, which is part of the detergent channel according to the invention. As can also be seen from FIG. 2, the feed line 40 is connected to the longitudinal groove 42 provided peripherally on the longitudinal bore 27.
- the boring 43 of the adjusting pin 25 opens out indirectly into the longitudinal groove 42 via the transverse boring 29 of the adjusting piston 28 which is not filled in by the adjusting pin 25 in the area 44. However, it is also possible for the boring 43 of the adjusting pin 25 to open directly into the longitudinal groove 42 when the adjusting pin 25 completely fills the transverse boring 29.
- the mechanical strength of the adjusting pin 25 is only insignificantly impaired by the boring 43 provided in the adjusting pin 25.
- the diameter of the Bohmng 43 can be dimensioned so small that there is a reduction in mechanical Strength of less than 1% results.
- the flushing agent channel furthermore runs through an axial bore 44 in the cylinder drum 8 and a bore 45 in the spring plate 46 in order to open into the spring chamber 47 of the central pin 16.
- a central bore 48 then runs from the spring chamber 47 to the spherical bearing 21 in the central pin 16.
- Further connecting channels 49, 50 and 51 are provided in the drive shaft 3, which open directly in the area of the roller bearings 4, 5.
- both the central bore 48 of the central pin 16 and the mouth of the connecting channel 49 are provided with trumpet-shaped extensions to ensure that in each verse pivoting position of the cylinder drum 8, a flushing agent flow is made possible.
- the flushing agent flows into the housing interior 7 in order to leave it through the housing opening 52 as leakage fluid. This also ensures that the housing is flushed, which, among other things, serves to dissipate heat. In this way, the heat balance of the axial piston machine 1 is improved.
- the invention is not limited to the exemplary embodiment shown.
- the flow of detergent to the adjusting pin 25 could also be done in another way, e.g. via the actuating piston 28.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Detergent Compositions (AREA)
- Reciprocating Pumps (AREA)
- Hydraulic Motors (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE59705918T DE59705918D1 (de) | 1996-11-27 | 1997-10-23 | Axialkolbenmaschine mit lagerspülung |
EP97948792A EP0941403B1 (de) | 1996-11-27 | 1997-10-23 | Axialkolbenmaschine mit lagerspülung |
US09/242,603 US6279452B1 (en) | 1996-11-27 | 1997-10-23 | Axial piston motor with bearing flushing |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19649195.9 | 1996-11-27 | ||
DE19649195A DE19649195C1 (de) | 1996-11-27 | 1996-11-27 | Axialkolbenmaschine mit Lagerspülung |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998023860A1 true WO1998023860A1 (de) | 1998-06-04 |
Family
ID=7812954
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1997/005870 WO1998023860A1 (de) | 1996-11-27 | 1997-10-23 | Axialkolbenmaschine mit lagerspülung |
Country Status (4)
Country | Link |
---|---|
US (1) | US6279452B1 (de) |
EP (1) | EP0941403B1 (de) |
DE (2) | DE19649195C1 (de) |
WO (1) | WO1998023860A1 (de) |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19860023C5 (de) * | 1998-12-23 | 2011-04-28 | Brueninghaus Hydromatik Gmbh | Kolbenmaschine mit einer Dichtungsanordnung |
DE10030147C1 (de) * | 2000-06-20 | 2002-06-06 | Brueninghaus Hydromatik Gmbh | Axialkolbenmaschine |
DE10066008B4 (de) * | 2000-09-11 | 2004-04-22 | Sauer-Danfoss (Neumünster) GmbH & Co OHG | Schrägachsenverstelleinheit mit Kühlung durch einen Ölmassenstrom |
US7014429B2 (en) * | 2003-03-06 | 2006-03-21 | The United States Of America As Represented By The Administrator Of The U.S. Environmental Protection Agency | High-efficiency, large angle, variable displacement hydraulic pump/motor |
DE502004003059D1 (de) * | 2003-06-11 | 2007-04-12 | Brueninghaus Hydromatik Gmbh | Axialkolbenmaschine mit versetztem positionierelement und steuerscheibe f r eine solche axialkolbenmaschine |
US6996980B2 (en) * | 2003-06-27 | 2006-02-14 | Sauer-Danfoss Inc. | Bent axis hydrostatic unit with multiple yokes |
DE102004061863A1 (de) * | 2004-12-22 | 2006-07-06 | Brueninghaus Hydromatik Gmbh | Kolben für Axialkolbenmaschine in Schrägachsenbauweise und Verfahren zur Herstellung solcher Kolben |
EP1887253A4 (de) * | 2005-05-26 | 2010-11-17 | Hitachi Construction Machinery | Hydraulische antriebsvorrichtung |
KR100918603B1 (ko) | 2005-11-24 | 2009-09-25 | 가부시키가이샤 고마쓰 세이사쿠쇼 | 사축식 가변 용량형 펌프·모터 |
CN101415944B (zh) * | 2006-03-14 | 2010-12-22 | 朱荣辉 | 轴向柱塞泵或马达 |
US8096228B1 (en) * | 2008-08-08 | 2012-01-17 | Sauer-Danfoss Inc. | Bent axis dual yoke hydromodule |
DE102009058332B4 (de) * | 2009-12-15 | 2019-11-28 | Robert Bosch Gmbh | Axialkolbenmaschine |
US8316995B2 (en) * | 2009-12-22 | 2012-11-27 | Parker-Hannifin Corporation | Hydraulic machine with oil dams |
DE102011075077A1 (de) * | 2011-05-02 | 2012-11-08 | Zf Friedrichshafen Ag | Axialkolbenmaschine in Schrägachsenbauweise |
JP5063823B1 (ja) * | 2012-04-13 | 2012-10-31 | 株式会社小松製作所 | 斜軸式アキシャルピストンポンプ・モータ |
DE202012009130U1 (de) * | 2012-09-24 | 2013-09-26 | Josef Kränzle GmbH & Co. KG | Kolbenpumpe für ein Hochdruckreinigungsgerät |
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 |
CN102937068A (zh) * | 2012-11-15 | 2013-02-20 | 上海电气液压气动有限公司 | 一种用于液压马达的排量微调机构 |
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 |
CN102943752A (zh) * | 2012-11-15 | 2013-02-27 | 上海电气液压气动有限公司 | 一种液压泵用排量调节驱动机构 |
DE102012022695A1 (de) | 2012-11-20 | 2014-05-22 | Robert Bosch Gmbh | Hydrostatische Axialkolbenmaschine in Schrägachsenbauweise |
DE102012222172A1 (de) * | 2012-12-04 | 2014-06-05 | Robert Bosch Gmbh | Axialkolbenmaschine mit kegelförmigem Kolben |
DE102012222170A1 (de) * | 2012-12-04 | 2014-06-05 | Robert Bosch Gmbh | Axialkolbenmaschine mit geneigter Zylinderbohrung |
CN105339657B (zh) * | 2013-05-22 | 2018-01-12 | 贺德克传动中心有限公司 | 以斜盘式结构形式的轴向活塞泵 |
CN107060882A (zh) * | 2015-12-12 | 2017-08-18 | 熵零技术逻辑工程院集团股份有限公司 | 一种缩小可变排量流体机构余隙容积的方法、流体机构 |
DE102017200244A1 (de) * | 2017-01-10 | 2018-07-12 | Robert Bosch Gmbh | Hydrostatischer Axialkolbenmotor in Schrägachsenbauweise |
DE102019205140A1 (de) * | 2019-04-10 | 2020-10-15 | Robert Bosch Gmbh | Axialkolbenmaschine mit in die Anschlussplatte integrierten Ventilschiebern |
DE102022200766A1 (de) | 2022-01-25 | 2023-07-27 | Robert Bosch Gesellschaft mit beschränkter Haftung | Axialkolbenmaschine mit einem gegossenen Gehäuse oder Gehäuseabschnitt sowie Verfahren zu dessen Herstellung |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2207658A1 (de) * | 1972-02-18 | 1973-08-30 | Heinrich Ruebel | Hochdruck-axialkolbenpumpe mit durch taumelscheiben getriebenen gegenlaeufigen kolben |
DE2625730A1 (de) * | 1976-06-09 | 1977-12-22 | Regar Karl Nikolaus Dipl Ing | Verfahren und vorrichtung zur verstellung der foerdervolumen von hydrostatischen verdraengermaschinen |
DE3134537A1 (de) * | 1981-09-01 | 1983-03-17 | Moskovskoe naučno-proizvodstvennoe ob"edinenie po stroitel'nomu i dorožnomu mašinostroeniju VNIISTROIDORMAŠ, Moskva | Hydraulische axialkolbenmaschine mit rotierenden verdraengungskoerpern |
DE3638890A1 (de) | 1986-07-31 | 1988-02-04 | Hydromatik Gmbh | Axial-kolbenmaschine mit einer einrichtung zum spuelen des kreislaufs |
DE4215869C1 (de) | 1992-05-14 | 1993-09-23 | Hydromatik Gmbh, 89275 Elchingen, De | |
EP0728945A1 (de) * | 1995-02-23 | 1996-08-28 | Brueninghaus Hydromatik Gmbh | Axiakolbenmaschine |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2947553C2 (de) * | 1979-11-26 | 1982-03-25 | Hydromatik Gmbh, 7900 Ulm | Lagerung der Triebwelle einer Axialkolbenmaschine in Schrägachsenbauweise |
DE3125264A1 (de) * | 1981-06-26 | 1983-01-13 | Hydromatik Gmbh, 7900 Ulm | Schraegachsen-axialkolbenmaschine mit einer mitnahmeplatte fuer die zylindertrommel |
DE3333812C2 (de) * | 1983-09-19 | 1986-08-07 | Hydromatik GmbH, 7915 Elchingen | Schwenktrommel-Axialkolbenmaschine |
-
1996
- 1996-11-27 DE DE19649195A patent/DE19649195C1/de not_active Expired - Fee Related
-
1997
- 1997-10-23 EP EP97948792A patent/EP0941403B1/de not_active Expired - Lifetime
- 1997-10-23 DE DE59705918T patent/DE59705918D1/de not_active Expired - Lifetime
- 1997-10-23 WO PCT/EP1997/005870 patent/WO1998023860A1/de active IP Right Grant
- 1997-10-23 US US09/242,603 patent/US6279452B1/en not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2207658A1 (de) * | 1972-02-18 | 1973-08-30 | Heinrich Ruebel | Hochdruck-axialkolbenpumpe mit durch taumelscheiben getriebenen gegenlaeufigen kolben |
DE2625730A1 (de) * | 1976-06-09 | 1977-12-22 | Regar Karl Nikolaus Dipl Ing | Verfahren und vorrichtung zur verstellung der foerdervolumen von hydrostatischen verdraengermaschinen |
DE3134537A1 (de) * | 1981-09-01 | 1983-03-17 | Moskovskoe naučno-proizvodstvennoe ob"edinenie po stroitel'nomu i dorožnomu mašinostroeniju VNIISTROIDORMAŠ, Moskva | Hydraulische axialkolbenmaschine mit rotierenden verdraengungskoerpern |
DE3638890A1 (de) | 1986-07-31 | 1988-02-04 | Hydromatik Gmbh | Axial-kolbenmaschine mit einer einrichtung zum spuelen des kreislaufs |
DE4215869C1 (de) | 1992-05-14 | 1993-09-23 | Hydromatik Gmbh, 89275 Elchingen, De | |
EP0728945A1 (de) * | 1995-02-23 | 1996-08-28 | Brueninghaus Hydromatik Gmbh | Axiakolbenmaschine |
Also Published As
Publication number | Publication date |
---|---|
EP0941403A1 (de) | 1999-09-15 |
DE59705918D1 (de) | 2002-01-31 |
DE19649195C1 (de) | 1998-01-08 |
EP0941403B1 (de) | 2001-12-19 |
US6279452B1 (en) | 2001-08-28 |
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