EP1590569A1 - Axialkolbenmaschine und steuerplatte f r eine axialkolbenmas chine - Google Patents
Axialkolbenmaschine und steuerplatte f r eine axialkolbenmas chineInfo
- Publication number
- EP1590569A1 EP1590569A1 EP03788997A EP03788997A EP1590569A1 EP 1590569 A1 EP1590569 A1 EP 1590569A1 EP 03788997 A EP03788997 A EP 03788997A EP 03788997 A EP03788997 A EP 03788997A EP 1590569 A1 EP1590569 A1 EP 1590569A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- control plate
- axial piston
- control
- piston machine
- cylinder drum
- 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
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
- F04B1/2021—Details or component parts characterised by the contact area between cylinder barrel and valve 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
- 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
- F04B1/2042—Valves
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/18—Mechanical movements
- Y10T74/18056—Rotary to or from reciprocating or oscillating
- Y10T74/18344—Unbalanced weights
Definitions
- the invention relates to an axial piston machine and a control plate for an axial piston machine.
- pistons which are arranged to be longitudinally displaceable in the cylinder bores of a cylinder drum, perform a lifting movement with each revolution of the cylinder drum.
- the movement consists of one
- Control openings enables the connection of the cylinder drum with a high pressure connection or a low pressure connection.
- control plate is e.g. B. described in DE 43 40 061 AI.
- the control plate has an outer diameter which corresponds to the inner diameter of the housing component.
- the control plate is supported on a housing cover.
- a high-pressure connection and a low-pressure connection are formed in the housing cover and open into corresponding control openings in the control plate.
- the control plate has a central recess which is penetrated by a shaft which is connected to the cylinder drum in a rotationally fixed manner.
- control plate is centered on its outer edge in the housing and must be processed with a high surface quality due to the full-surface support of the control plate on the housing cover in order to avoid the losses of the axial piston machine to keep low. Due to the large areas to be machined in a machining process, the material used, which is required for the blank of the control plate, is considerable. In addition, due to the centering of the control plate on its outer circumference, a large outer diameter of the control plate is required, which ultimately leads to a high component weight.
- the invention has for its object to provide an axial piston machine and a control plate for an axial piston machine in which the amount of machining is reduced and which has a lower component weight.
- control plate according to the invention and the axial piston machine according to claim 8.
- the control plate is centered on its inner edge.
- a centering surface is formed on the inner edge, which consists of several partial surfaces. These partial surfaces center the control plate on a corresponding centering body which is formed or fixed on the side of the housing.
- the subclaims relate to advantageous developments of the control plate according to the invention or the axial piston machine according to the invention.
- the centering surface from three partial surfaces, which are formed by radial expansion of segments of the inner edge.
- the radial widening of the inner edge in the area of individual, separate segments is in particular so large that a gap is formed between the centering body and the control plate which is suitable for allowing the leakage fluid accumulated in the interior of the cylinder drum to pass.
- a groove can advantageously be provided in the area of the separating surfaces of the control plate on the side of the control plate facing away from the cylinder drum or in the housing cover, which groove runs in the radial direction and thus connects the inner leakage volume with an outer leakage volume formed by the remaining housing interior.
- control plate according to the invention and the axial piston machine according to the invention are shown in the drawing and are explained in more detail with reference to the following description. Show it:
- Figure 1 is a schematic representation of an axial piston machine according to the invention. 2 shows an enlarged representation of the area of the control plate of the axial piston machine according to the invention;
- FIG. 3 shows a plan view of a control plate according to the invention.
- Fig. 4 shows a section of a control plate according to the invention.
- FIG. 1 shows an axial piston machine which has a shaft 3 which is rotatably mounted in a housing 2 and on which a cylinder drum 4 is arranged, the cylinder drum 4 and the shaft 3 being connected to one another in a rotationally fixed manner.
- the shaft 3 penetrates the cylinder drum 4 and is mounted on both sides of the cylinder drum 4 in a roller bearing 5 and 6, respectively.
- the roller bearing 6 has an outer bearing ring 7 which is inserted into a corresponding recess in a housing cover 8.
- a plurality of cylinder bores 9 are formed in the cylinder drum 4, distributed over the circumference, the central axes of the cylinder bores 9 running parallel to the central axis of the shaft 3.
- pistons 10 are inserted, which have a spherical head 11 on the side facing away from the housing cover 8 and which cooperates with a corresponding recess of a sliding block 12 to form an articulated connection.
- the piston 10 is supported on a swash plate 13 by means of the sliding block 12. When the cylinder drum 4 rotates, the pistons 10 therefore perform a lifting movement in the cylinder bores 9.
- the amount of Strokes are predefined by the position of the swash plate 13, the position of the swash plate 13 being adjustable in the exemplary embodiment by an adjusting device 14.
- the cylinder drum 4 has a central opening 15, in which a compression spring 16 is arranged, which is tensioned between a first spring bearing 17 and a second spring bearing 18.
- the first spring bearing 17 is fixed by the shaft 3 in the axial direction
- the second spring bearing 18, on the other hand, is formed in the illustrated embodiment by a circlip inserted into a groove in the cylinder drum 4. Due to the force of the compression spring 16, the cylinder drum 4 is therefore displaced in the axial direction to such an extent that its end face 19 lies sealingly against a control plate 20.
- the control openings of the control plate 20 which cannot be seen in the section shown in FIG. 1 of the axial piston machine 1 are in permanent contact with at least one high-pressure or low-pressure connection on their side facing away from the cylinder drum 4.
- a high-pressure or low-pressure connection is shown by way of example in FIG. 2 and provided with the reference numbers 26 and 26 '.
- the cylinder bores 9 are open via openings 21 to the end face 19 of the cylinder drum 4.
- the openings 21 sweep over a sealing environment 27 of the control plate 20 and are alternately connected to the control openings of the high-pressure or low-pressure connection during one revolution.
- the end face 19 and the sealing environment 27 sealingly adjoining it can also be designed with a corresponding spherical shape.
- the position of the control plate 20 is determined by a centering surface 29, which consists of several partial surfaces, as will also be described below with reference to FIG. 3 is explained in detail.
- the passage opening 38 of the control plate 20 has a radial extent which corresponds to the outer radial extent of a centering body, said centering body is connected to a 'housing component.
- the inner diameter of the passage opening and thus the centering surface 29 correspond to the outer diameter of the outer bearing ring 7 of the roller bearing 6 as a centering body, so that the control plate 20 is centered on the outer bearing ring 7.
- the control plate 20 is supported on the housing cover 8 in the axial direction.
- the control plate 20 has a further sealing environment 28, which is formed on the side of the control plate 20 facing away from the cylinder drum 4 and which cooperates in a sealing manner with the surface of the housing cover 8.
- a leakage occurs between the cylinder drum 4 and the control plate 20, which is also necessary for the formation of a lubricating film.
- the central opening 15 of the cylinder drum 4 delimits an internal leakage volume 44 which receives part of the leakage oil.
- a gap 22 is formed between the control plate 20 and the outer bearing ring 7, which gap is connected to the remaining housing volume 24 by means of a groove 25.
- the inner leakage volume is therefore in contact with the outer leakage volume 45 of the remaining housing volume via the gap 22 and the groove 25, so that pressure compensation is possible.
- the leakage fluid collected in the interior of the housing volume is returned to the pressure medium circuit in a manner not shown.
- Fig. 2 the area of the control plate 20 is shown again enlarged, the cutting plane with respect 1 is rotated by 90 °. Identical components are provided with identical reference symbols.
- the cut now runs through the control plate 20 such that a first control opening 32 and a second control opening 33 can be seen.
- the centering surface 29, with which the control plate 20 is supported at several points on the outer circumference of the outer bearing ring 7, is used for the correct positioning of the control plate 20 in the radial direction.
- a further locating pin 34 is used to secure against rotation, which is inserted into a bore in the housing cover 8 and engages in a corresponding groove in the control plate 20.
- a radial extension 35 is formed on the high pressure side on the outer edge 46 of the control plate 20 in order to cope with the higher mechanical loads on the high pressure side.
- the area 35 which is radially widened outwards and the inner edge 47 of the control plate 20 on which the centering surface 29 is formed is reduced in its thickness in comparison to the sealing environment 27 or the oppositely oriented further sealing environment 28.
- FIG. 3 An example of a structural design of a control plate 20 is shown in FIG. 3.
- the control plate 20 has a substantially circular shape Geometry on.
- a through opening 38 is formed in the control plate 20, which has a diameter of di.
- the inner edge 47 of this through opening 38 forms the centering surface 29.
- the passage opening 38 is widened inward in the radial direction at individual recesses 36.1, 36.2 and 36.3.
- a segment 43.1, 43.2 and 43.3 with an inner diameter di remains between the recesses 36.1 to 36.3 '. This results in three partial surfaces 29.1, 29.2 and 29.3 on the segments 43.1, 43.2 and 43.3 as the centering surface 29.
- the third partial area 29.3 is subdivided again by introducing a recess 37, so that the third partial area 29.3 consists of the two partial areas designated 29.3 'and 29.3''.
- the third segment 43.3 consists of the two sub-segments 43.3 'and 43.3'".
- the recess 37 is provided for receiving the dowel pin 34, so that the control openings 32 and 33.1 to 33.5 have a defined position.
- the recesses 36.1, 36.2 and 36.3 are arranged evenly distributed over the circumference of the passage opening 38. Their radial extension extends up to a diameter d 2 , which is large enough to form the gap 22 to the outer bearing ring 7, which can be passed by a leakage fluid.
- the control plate 20 also has the kidney-shaped low-pressure control opening 32, via which the openings 21 of the cylinder drum 4 are connected to the low-pressure connection.
- kidney-shaped high-pressure control openings are provided in the exemplary embodiment shown, which are designated by the reference numerals 33.1 to 33.5.
- the respectively adjacent high-pressure control openings 33.1 to 33.5 are separated from one another by a separating web 39.1 to 39.4.
- separating surfaces 41 and 42 are formed which, when the control disk 20 is installed, close the openings 21 in the region of the upper and lower dead center, as is shown in FIG. 1.
- a radial extension 35 is additionally formed in the region of the high-pressure control openings 33.1 to 33.5.
- the radial extension 35 has an outer edge 40 which extends in the shape of a circular arc and which is concentric with the circular disk-shaped geometry of the control plate 20.
- the control plate 20 is made from a blank, which is preferably produced in a hot forging process.
- the blank is in the area of the radial enlargement 35 and in the area between the diameters di and d 2 of less thickness than in the sealing area 27 and 28, respectively or by machining, as well as the introduction of the recess 37 for the further dowel pin 34.
- the control openings 32 or 33.1 to 33.5 are preferably punched, it being possible for the punching to take place in the warm or cold state.
- the sealing surroundings 27 and 28 are processed, for example, by lapping.
- FIG. 4 shows a section through the control plate 20 along the line IV-IV in FIG. 3.
- the sectional view shows once again that in the area of the sealing environment 27 and the further sealing environment 28 of the control openings 32 and 33, a greater thickness t of the control plate 20 compared to the thickness ti in the area of the radial extension 35 and the centering surface 29 or segments 43.1 to 43.3 is provided, the change in thickness preferably taking place on both sides of the control plate 20.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10251552 | 2002-11-05 | ||
DE10251552A DE10251552C5 (de) | 2002-11-05 | 2002-11-05 | Axialkolbenmaschine und Steuerplatte für eine Axialkolbenmaschine |
PCT/EP2003/012248 WO2004042229A1 (de) | 2002-11-05 | 2003-11-03 | Axialkolbenmaschine und steuerplatte für eine axialkolbenmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1590569A1 true EP1590569A1 (de) | 2005-11-02 |
EP1590569B1 EP1590569B1 (de) | 2012-01-18 |
Family
ID=32308481
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03788997A Expired - Lifetime EP1590569B1 (de) | 2002-11-05 | 2003-11-03 | Axialkolbenmaschine und steuerplatte f r eine axialkolbenmas chine |
Country Status (4)
Country | Link |
---|---|
US (1) | US7661937B2 (de) |
EP (1) | EP1590569B1 (de) |
DE (1) | DE10251552C5 (de) |
WO (1) | WO2004042229A1 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD553654S1 (en) * | 2006-06-01 | 2007-10-23 | Brueninghaus Hydromatik Gmbh | Axial piston machine |
DE102007024174B4 (de) | 2006-12-11 | 2022-09-08 | Robert Bosch Gmbh | Axialkolbenmaschine mit einer Verdrehsicherung für die Steuerplatte |
DE102013215868A1 (de) | 2013-08-12 | 2015-02-12 | Robert Bosch Gmbh | Bauteil für eine hydrostatische Axialkolbenmaschine und damit ausgestattete hydrostatische Axialkolbenmaschine |
DE102013215866A1 (de) | 2013-08-12 | 2015-02-12 | Robert Bosch Gmbh | Bauteil für eine hydrostatische Axialkolbenmaschine und damit ausgestattete hydrostatische Axialkolbenmaschine |
CH711662A1 (de) * | 2015-10-15 | 2017-04-28 | Liebherr Machines Bulle Sa | Herstellungsverfahren für Steuerplatten einer hydraulischen Maschine. |
DE102015224132A1 (de) * | 2015-12-03 | 2017-06-08 | Robert Bosch Gmbh | Hydrostatische Axialkolbenmaschine mit Steuerscheibe |
GB201609351D0 (en) * | 2016-05-26 | 2016-07-13 | Rolls Royce Controls & Data Services Ltd | Axial piston pump/motor |
US10323384B2 (en) * | 2016-12-08 | 2019-06-18 | Caterpillar Inc. | Active damping ride control system for attenuating oscillations in a hydraulic actuator of a machine |
US11236736B2 (en) * | 2019-09-27 | 2022-02-01 | Honeywell International Inc. | Axial piston pump with port plate having balance feed aperture relief feature |
DE102021212096A1 (de) | 2021-10-27 | 2023-04-27 | Robert Bosch Gesellschaft mit beschränkter Haftung | Steuerplatte für eine Axialkolbenmaschine, und Axialkolbenmaschine mit einer Steuerplatte |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4271868A (en) * | 1979-02-21 | 1981-06-09 | Mac Valves, Inc. | Pilot operated pilot valve |
DE3413059C1 (de) * | 1984-04-06 | 1985-07-11 | Hydromatik GmbH, 7915 Elchingen | Axialkolbenmaschine,insbesondere -pumpe der Schraegscheiben- oder Schraegachsenbauart |
US4757743A (en) * | 1987-04-29 | 1988-07-19 | Vickers, Incorporated | Power transmission |
DE3725361A1 (de) * | 1987-07-30 | 1989-02-16 | Brueninghaus Hydraulik Gmbh | Axialkolbenmaschine in schraegscheiben- oder schraegachsenbauart mit schlitzsteuerung und druckausgleichskanaelen |
DE3733083A1 (de) * | 1987-09-30 | 1989-04-13 | Linde Ag | Verstellbare axialkolbenmaschine in schraegscheibenbauweise |
DE4340061C2 (de) * | 1993-11-24 | 1997-02-20 | Linde Ag | Axialkolbenmaschine in Schrägscheibenbauart |
DE4417011C2 (de) | 1994-05-13 | 1996-11-28 | Danfoss As | Hydraulische Kolbenmaschine |
JP3362576B2 (ja) * | 1995-02-10 | 2003-01-07 | ダイキン工業株式会社 | 可変容量形ピストン機械 |
IL120609A0 (en) * | 1997-04-06 | 1997-08-14 | Nordip Ltd | Hydraulic axial piston pumps |
DE19855899B4 (de) * | 1998-12-03 | 2010-09-16 | Linde Material Handling Gmbh | Axialkolbenmaschine |
US6252321B1 (en) * | 1999-06-23 | 2001-06-26 | General Electric Company | Endshield assembly with alignable bearing for an electric motor |
US6257767B1 (en) * | 1999-08-27 | 2001-07-10 | Emerson Electric Co. | Reduced cost bearing retainer |
KR100851578B1 (ko) * | 2000-08-29 | 2008-08-12 | 가부시키카이샤 나브코 | 주행유닛 |
-
2002
- 2002-11-05 DE DE10251552A patent/DE10251552C5/de not_active Expired - Fee Related
-
2003
- 2003-11-03 EP EP03788997A patent/EP1590569B1/de not_active Expired - Lifetime
- 2003-11-03 WO PCT/EP2003/012248 patent/WO2004042229A1/de active Application Filing
- 2003-11-03 US US10/534,178 patent/US7661937B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2004042229A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2004042229A1 (de) | 2004-05-21 |
EP1590569B1 (de) | 2012-01-18 |
US20060169072A1 (en) | 2006-08-03 |
DE10251552B3 (de) | 2004-07-15 |
US7661937B2 (en) | 2010-02-16 |
DE10251552C5 (de) | 2010-07-15 |
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