EP2145106A1 - Axialkolbenmaschine mit rückführvorrichtung - Google Patents
Axialkolbenmaschine mit rückführvorrichtungInfo
- Publication number
- EP2145106A1 EP2145106A1 EP08758514A EP08758514A EP2145106A1 EP 2145106 A1 EP2145106 A1 EP 2145106A1 EP 08758514 A EP08758514 A EP 08758514A EP 08758514 A EP08758514 A EP 08758514A EP 2145106 A1 EP2145106 A1 EP 2145106A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- axial piston
- piston machine
- return element
- piston
- actuating
- 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.)
- Granted
Links
- 239000010687 lubricating oil Substances 0.000 claims description 6
- 239000000314 lubricant Substances 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000001419 dependent effect Effects 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- F04B1/26—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
- F04B1/324—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 swash plate
-
- 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
- F04B49/002—Hydraulic systems to change the pump delivery
-
- 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
- F04B49/08—Regulating by delivery pressure
Definitions
- a feedback element is provided on an actuating piston of an adjusting device of an axial piston machine, this feedback element and the actuating piston being arranged in a plane which is perpendicular to the pivot axis of the pivoting cradle and runs parallel to a rotational axis of the axial piston machine.
- FIG. 4 is an enlarged view of a return element of the recirculation device of FIG. 3; FIG. and
- the axial piston machine 1 shows a sectional representation of an axial piston machine 1, wherein the sectional plane, however, extends eccentrically parallel to a rotational axis of the axial piston machine 1.
- the axial piston machine 1 has a cylinder drum 2, in which a plurality of cylinder bores are distributed in a manner not shown distributed over a circumferential circle.
- pistons are arranged longitudinally displaceable, which promote a pressure medium by their stroke movement when it is a pump in the illustrated axial piston machine 1.
- the axial piston machine 1 has a housing, which consists of a first cup-shaped housing part 3 and a second housing part, which is designed as a flange 4.
- a drive shaft not visible in FIG. 1, is rotatably mounted in the flange part 4 and the first, cup-shaped housing part 3 and connected in a rotationally fixed manner to the cylinder drum 2.
- Cylinder drum 2 Upon rotation of the drive shaft is the non-rotatable connection Cylinder drum 2 rotated.
- the arranged in the Zylindertro ⁇ unel 2 longitudinally displaceable piston based in a known manner on sliding blocks on a pivoting cradle 5 from.
- the pivoting cradle 5 has a running surface 6 for this purpose.
- a retraction plate 7 is provided.
- the retraction plate 7 is held at a fixed distance from the running surface 6 of the pivoting cradle 5 and thus prevents lifting of the sliding shoes from the running surface 6.
- the sliding blocks are pivotally connected to the piston.
- the pistons in the cylinder drum 2 thus perform a different large stroke per revolution of the drive shaft or the cylinder drum 2.
- the pivoting cradle 5 is rotatable about a pivot axis S by rotating the pivoting cradle 5 in the pivoting pivot bearing. This changes the inclination of the running surface 6 relative to the axis of rotation of the cylinder drum 2.
- the adjusting system comprises at least a first adjusting device 10.
- the first adjusting device 10 has a first actuating piston 11.
- the first control piston 11 defines with its first end 12 a pressure chamber 13.
- the pressure chamber 13 is formed in a bottom of the cup-shaped housing part 2.
- a blind bore 14 is introduced into the bottom of the cup-shaped housing part 3, into which a bushing 15 is inserted.
- the bushing 15 is preferably pressed into the blind bore 14.
- Socket 15 serves the first end 12 of the actuating piston 11 as a sliding surface and cooperates sealingly with the first end 12 of the first actuating piston 11.
- the first end 12 of the actuating piston 11 is not cylindrical, but has a slightly spherical shape to at a
- a ball head On a side facing away from the first end 12 second end 16 of the actuating piston 12, a ball head is formed.
- the ball head is connected to a hold-down segment 17, which can be transmitted both tensile and compressive forces.
- the hold-down segment 17 is firmly connected by means of screws with the pivoting cradle 5.
- the hold-down segment 17 is screwed onto the running surface 6 in an outer region of the pivoting cradle 5.
- the hold-down segment 17 also has a hold-down surface 19, which engages over the retraction plate 7 and rests against the retraction plate 7 and thus ensures a constant distance of the retraction plate 7 from the running surface 6 of the pivoting cradle 5.
- a spherical recess 20 is provided in the hold-down segment 17, which encloses the ball-head-shaped second end 16 of the actuating piston 11.
- the connection of the actuating piston 11 with the hold-down segment 17 is designed as a locked connection. That is, the ball-head-shaped second end 16 is further enclosed than up to the equator by the spherical recess of the hold-down segment.
- a lubricant channel 21 is formed inside the adjusting piston 11 in the first adjusting device 10.
- the lubricant channel 21 extends from the first end 12 of the actuating piston 11 to the second end 16.
- the lubricant channel 21 connects the pressure chamber 13 with the ball-head-shaped second end 16 of the actuating piston 11.
- a pressure prevailing in the pressure chamber 13 thus ensures a discharge of Pressure medium at the ball-head-shaped second end 16 of the actuating piston 11.
- the articulated connection between the actuating piston 11 and the hold-down segment 17 is lubricated and hydrostatically relieved.
- Axial piston machine 1 is provided in the direction of maximum displacement volume.
- the pressure chamber 13 is connected to the delivery side of the axial piston machine 1 designed as a pump.
- the pending in the pressure chamber 13 high pressure is also used to cause a hydrostatic discharge of the pivoting cradle 5 in the flange 4.
- a pressure medium channel 22 or 23 is formed.
- the pressure medium channel 23 of the Pivoting cradle 5 outside of the section shown in the figure 1 connected to the storage area 8.
- a dowel pin 24 is provided, which is inserted into a bore in the pivoting cradle 5 and a corresponding bore in the hold-down segment 17.
- an adjustable first limiting device 25 is provided in the pot-shaped housing part 3 in the region of an end remote from the ball joint connection between the actuating piston 11 and the hold-down segment 17 of the hold-down segment 17.
- the first limiting device 25 cooperates with a first stop surface 26, which is formed on the hold-down segment 17.
- the first stop surface 26 is crowned, so that regardless of the setting of the first limiting device 25, the force is introduced by the limiting device 25 perpendicular to the first stop surface 26 and thus through the center of the crown. The center of this crowning is viewed from the stop surface in the direction of the pivoting cradle. 5
- the first limiting device 25 comprises an adjusting screw 27, which is screwed into a thread provided for this purpose in a housing bore. Depending on the depth of engagement, the maximum Deflection of the pivoting cradle 5 in a first direction of movement through the first
- the first adjusting device 10, the first limiting device 25 and the first hold-down segment 17 are all associated with a first direction of movement of the pivoting cradle 5. While the first adjusting device 10 attempts to adjust the pivoting cradle 5 in a first direction of movement, the first limiting device 25 serves as an adjustable stop and thus limits the maximum adjustment in this first direction of movement. To secure the adjusting screw 27 in a selected position, a lock nut 28 is provided. The lock nut 28 also serves to seal the housing interior from the environment. A safety cap 29 prevents unauthorized changing of the setting values.
- the safety stop between the flange part 4 and the further stop face 30 of the first hold-down segment 17 is preferably formed.
- the first adjusting device 10 and the first limiting device 25 are, as can be seen directly from FIG. 1, arranged in a plane which runs parallel to the axis of rotation of the cylinder drum 2 and in particular perpendicular to the
- Pivoting axis S of the pivoting cradle 5 is.
- the direction of force both to initiate the actuating force by the first adjusting device 10 and the direction of force when it stops against the adjustable first limiting device 25 is thus also in the plane formed parallel to the axis of rotation. Since this plane runs simultaneously through a first bearing area formed on the pivoting cradle 5 and the flange part 4, torsional forces on the pivoting cradle 5 are avoided.
- the elastic element is designed as a spring 33 in the illustrated embodiment.
- the spring 33 which is preferably a steel spiral spring, is supported on the one hand on a first spring bearing 31 formed in the vicinity of the second end 16.
- the spring bearing 31 is as radial Section formed in the actuating piston 11 and has a in the axial direction slightly in the direction of the first end 12 of the actuating piston 11 extending guide portion for centering the spring 33.
- the spring 33 abuts against a second spring bearing 32.
- the spring bearing 32 also has a guide portion which extends in the axial direction.
- the spring bearing 32 is arranged in a centering recess 34 of the housing part 3 and is located there at the bottom of the cup-shaped
- the spring bearing 32 is preferably at the same time at the bottom of the cup-shaped housing 3 at the bottom of the centering recess 34 and at the oriented to the interior of the housing of the axial piston 1 end of the bushing 15 at.
- the spring may also be arranged at another location of the adjusting system, in particular at a second adjusting device to be described later.
- FIG. 1 shows a section through the first adjusting device 10 and the first adjustable limiting device 25.
- the first adjusting device 10 is provided for adjusting the axial piston machine 1 in the direction of larger stroke volume and can therefore be referred to as Ausschwenkvoriques. This is true when the axial piston machine 1 as a hydraulic pump z. B. is used in the open circuit and is provided for promotion in one direction only.
- FIG. 2 This arrangement is shown in FIG. 2, in which the individual components of the adjusting system are shown once again in a perspective view. In this case, the components of the axial piston machine 1 that do not concern the positioning system are omitted for easier traceability.
- the return device according to the invention is also shown. This will be explained below.
- the first adjusting device 10 and the second adjusting device 35 lie on opposite sides with respect to the axis of rotation.
- the second adjusting device 35 of the actuating system has an actuating piston, which is mounted with its first end in a second sleeve 36.
- the second sleeve 36 is also inserted in a blind bore in the bottom of the cup-shaped housing part 3.
- a second pressure chamber is formed in the sleeve 36, which is closed by the bottom of the cup-shaped housing part 3, as in the first adjusting device 10.
- the pressure chamber or the pressure chamber is limited by a likewise spherical control piston disc.
- a ball joint connection is also formed at the other end of the actuating piston of the second adjusting device 35.
- the second end 37 of the actuating piston of the second adjusting device 35 is also inserted into a spherical recess of a second hold-down segment 38.
- the second hold-down segment 38 like the first hold-down segment 17, is connected to the pivoting cradle 5 by means of screws 18.
- the first and second hold-down segments 17 and 38 are preferably identical.
- the first hold-down segment 17 extends substantially along the plane in which the first adjusting device 10 and the first
- the pivoting pivot bearing 8 of the pivoting cradle 5 is formed by a first bearing surface and a second bearing surface.
- the first storage area extends in a width in the direction of the pivot axis S, so that the plane in which the first adjusting device 10 and the first adjustable limiting device 25 are arranged, that is, in which the directions of force by the first adjusting device 10 and the first adjustable limiting device 25, through the first bearing surface runs.
- the second bearing surface also extends over a width in the direction of the pivot axis S, so that the further plane in which the second adjusting device 35 and the second
- the actuating piston 11 is part of a
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Hydraulic Motors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007022569A DE102007022569A1 (de) | 2007-05-14 | 2007-05-14 | Axialkolbenmaschine mit Rückführvorrichtung |
PCT/EP2008/003866 WO2008138603A1 (de) | 2007-05-14 | 2008-05-14 | Axialkolbenmaschine mit rückführvorrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2145106A1 true EP2145106A1 (de) | 2010-01-20 |
EP2145106B1 EP2145106B1 (de) | 2014-07-16 |
Family
ID=39709374
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08758514.7A Active EP2145106B1 (de) | 2007-05-14 | 2008-05-14 | Axialkolbenmaschine mit rückführvorrichtung |
Country Status (5)
Country | Link |
---|---|
US (1) | US8418599B2 (de) |
EP (1) | EP2145106B1 (de) |
JP (1) | JP5492073B2 (de) |
DE (1) | DE102007022569A1 (de) |
WO (1) | WO2008138603A1 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006062065A1 (de) * | 2006-12-29 | 2008-07-03 | Robert Bosch Gmbh | Axialkolbenmaschine mit einem einen radial erweiterten Innenraumabschnitt aufweisenden Gehäuse |
DE102011105544A1 (de) | 2010-07-08 | 2012-01-12 | Robert Bosch Gmbh | Hydraulische Axialkolbenmaschine |
DE102010054044A1 (de) * | 2010-12-10 | 2012-06-14 | Robert Bosch Gmbh | System mit Gleitschuhen und Kolben für eine Axialkolbenmaschine |
DE102011120750A1 (de) * | 2011-12-08 | 2013-06-13 | Robert Bosch Gmbh | Ansteuergerät für hydrostatische Kolbenmaschinen |
DE102012222936A1 (de) * | 2012-12-12 | 2014-06-12 | Robert Bosch Gmbh | Axialkolbenmaschine |
US9664184B2 (en) * | 2013-05-22 | 2017-05-30 | Hydac Drive Center Gmbh | Axial piston pump having a swash-plate type construction |
CN106894962A (zh) * | 2017-03-08 | 2017-06-27 | 重庆红江机械有限责任公司 | 一种高压大流量液压柱塞泵 |
CN111794927A (zh) * | 2020-08-10 | 2020-10-20 | 长兴永能动力科技有限公司 | 一种小型高效汽轮机用顶轴油泵装置 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3753627A (en) | 1971-04-09 | 1973-08-21 | E Ward | Pump bypass liquid control |
JPS6233993Y2 (de) * | 1980-03-31 | 1987-08-31 | ||
JPS6463664A (en) * | 1987-09-02 | 1989-03-09 | Tokyo Keiki Kk | Control device for variable displacement pump |
JPH0526151A (ja) | 1991-07-16 | 1993-02-02 | Toyota Autom Loom Works Ltd | 油圧駆動装置 |
DE4202631C2 (de) | 1992-01-30 | 1995-07-06 | Hydromatik Gmbh | Axialkolbenmaschine, insbesondere Hydropumpe der Schiefscheibenbauart oder der Schrägachsenbauart, deren Durchsatzvolumen durch eine Einstellvorrichtung einstellbar ist |
US5630352A (en) * | 1996-03-08 | 1997-05-20 | Vickers, Incorporated | Variable displacement hydrualic piston machine saddle bearing |
DE19755386C2 (de) | 1997-12-12 | 1999-10-21 | Brueninghaus Hydromatik Gmbh | Hydrostatische Maschine mit einer drehbar gelagerten Zylindertrommel und einer einstellbaren Schwenkscheibe |
DE10001826C1 (de) | 2000-01-18 | 2001-09-20 | Brueninghaus Hydromatik Gmbh | Vorrichtung zum Regeln der Leistung einer verstellbaren Kolbenmaschine |
DE10360452B3 (de) | 2003-12-22 | 2005-09-08 | Brueninghaus Hydromatik Gmbh | Axialkolbenmaschine mit fixierbarem Gleitstein an der Schrägscheibe |
JP2005320912A (ja) | 2004-05-10 | 2005-11-17 | Shin Caterpillar Mitsubishi Ltd | 可変容量型油圧ポンプ |
-
2007
- 2007-05-14 DE DE102007022569A patent/DE102007022569A1/de not_active Withdrawn
-
2008
- 2008-05-14 US US12/598,969 patent/US8418599B2/en active Active
- 2008-05-14 EP EP08758514.7A patent/EP2145106B1/de active Active
- 2008-05-14 JP JP2010506865A patent/JP5492073B2/ja active Active
- 2008-05-14 WO PCT/EP2008/003866 patent/WO2008138603A1/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2008138603A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2010526245A (ja) | 2010-07-29 |
US8418599B2 (en) | 2013-04-16 |
WO2008138603A1 (de) | 2008-11-20 |
US20100132544A1 (en) | 2010-06-03 |
EP2145106B1 (de) | 2014-07-16 |
DE102007022569A1 (de) | 2008-11-20 |
JP5492073B2 (ja) | 2014-05-14 |
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