EP0189786B1 - Machine à pistons axiaux - Google Patents
Machine à pistons axiaux Download PDFInfo
- Publication number
- EP0189786B1 EP0189786B1 EP86100502A EP86100502A EP0189786B1 EP 0189786 B1 EP0189786 B1 EP 0189786B1 EP 86100502 A EP86100502 A EP 86100502A EP 86100502 A EP86100502 A EP 86100502A EP 0189786 B1 EP0189786 B1 EP 0189786B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- disc body
- oblique disc
- recess
- piston machine
- housing
- 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
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
- F01B3/00—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S384/00—Bearings
- Y10S384/90—Cooling or heating
- Y10S384/906—Antirotation key
-
- 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
- Y10T74/18296—Cam and slide
- Y10T74/18336—Wabbler type
Definitions
- the invention relates to an axial piston machine according to the preamble of claim 1.
- the invention is based on the object of designing an axial piston machine of the type described at the outset in such a way that, in a space-saving design, a technically simple, assembly-friendly and stable rotation lock is achieved.
- the swashplate body with its round circumferential surface, of which at least one axis lies outside the common axis is inserted in a form-locked manner in a recess of the housing shaped correspondingly to this circumferential surface.
- a round circumferential surface is to be understood, for example, as a circular circumferential surface, one axis of which lies outside the common axis of the swashplate body and the drive shaft, i.e. is a circumferential surface that is eccentric to this common axis, or an oval or elliptical circumferential surface, of which at least one of the axes of symmetry lies outside of said common axis.
- the desired rotation lock is obtained automatically because the swash plate body is inserted in a form-fitting manner in the housing without additional fastening and is secured in the recess.
- the desired stability results from the fact that on the one hand practically the entire circumferential surface of the swashplate body is included in the anti-rotation device, which results in a low surface pressure, and on the other hand the anti-rotation device is effective at a large distance from the axis of the swashplate body with respect to the size of the swashplate body , whereby the forces acting on the swashplate body in the circumferential direction are reduced.
- Another advantage of the configuration according to the invention is that no additional components are required for the rotation lock, as is the case with the known configuration. This is important for manufacturing reasons and also for reasons of simple assembly and disassembly. In the embodiment according to the invention, it is only necessary to insert the swashplate body with its round peripheral surface into the correspondingly shaped recess of the housing.
- the configuration according to the invention is suitable both for the axial piston pumps with a constant delivery volume and for those with a variable delivery volume and also for those in which the direction of rotation is reversible.
- a swivel bearing and an adjustment mechanism for swiveling the swash plate are required.
- the term swashplate body includes not only the swashplate itself, but also its base plate, on which it is supported as a pivotable part on the housing.
- the configuration according to the invention is suitable both for pump operation and for motor operation of these axial piston machines.
- the axial piston machine consists of a housing 1 with a fastening flange 2 and a housing cover 3 at the end opposite the fastening flange 2.
- an axially extending drive shaft 4 is mounted in roller bearings 5, 6, on which a cylinder drum 7 is rotatably mounted within the housing 1 and has a plurality of axially extending cylinder bores on a pitch circle, in which pistons 9 are displaceable.
- the pistons have at their ends facing the mounting flange 2 piston heads 11 which are received in a known manner in slide shoes 12 and are axially supported with these slide shoes 12 on the inclined surface 13 of a swash plate 14 which is penetrated by the drive shaft 4 in a through opening 10 .
- the swash plate 14, in which the roller bearing 5 for receiving the drive shaft 4 is received and secured by a bearing cover 15, has two cylindrical peripheral surfaces 16, 17 with different diameters d, D, which are arranged eccentrically to one another.
- the eccentricity is designated E in FIG. 3.
- the smaller-diameter cylindrical peripheral surface 16 is further away from the inclined surface 1 than the larger cylindrical peripheral surface 17.
- the diameter ratio is approximately 1: 1.15.
- the smaller cylindrical peripheral surface 16 - viewed axially - is arranged within the larger cylindrical peripheral surface 17, so that a shoulder in the form of a stepped surface 18 results on the entire surface of the swash plate 14.
- the housing 1 has a recess generally designated 19 for receiving the swash plate 14, the recess being stepped in diameter, the larger cylindrical inner peripheral surface 21, the smaller cylindrical inner peripheral surface 22 and the shoulder extending between these two in the form of a step surface 23 correspond to the shape of the relevant surfaces on the swash plate 14 due to the same eccentricity E.
- the swash plate 14 can therefore be inserted approximately closing from the inside into the recess 1, wherein due to the eccentric arrangement of the peripheral surfaces 16, 22; 17, 21 and the presence of the stepped surfaces 18, 23 results for the swash plate 14 both in the circumferential direction 24 effective rotation lock and in the direction facing away from the cylinder drum 7 effective axial lock.
- a special axial securing in the area of the recess 19 in the direction of the cylinder drum 17 is not required, because during operation of the axial piston pump, the piston / slide shoe arrangement, generally designated 25, acts on the swash plate 14 in the direction of the step surfaces 18, 23 and thus secures in their position.
- a compression spring 26 is present, which acts on the piston / slide shoe arrangement 25 in the direction of the swash plate 14, whereby it is supported on the cylinder drum 7 and by means of a dome-shaped, axially displaceable sleeve 27 and a holding plate 28 for the slide shoes 12 on the latter works.
- the compression spring 26 acts simultaneously on the non-rotatable, but axially displaceably mounted on the drive shaft 4 cylinder drum 7 against the control surface of a control disk 29.
- the control disk 29 and the suction and pressure lines extending through it correspond in principle to conventional designs and are therefore not to be described.
- the swash plate 14 is acted upon in the circumferential direction 24 due to the inclined surface 14 and the rotary movement of the cylinder drum 7. Due to the eccentric arrangement of the peripheral surfaces 16, 22; 17, 21, which present as form-fitting surfaces extending transversely to the circumferential direction 24, the rotation lock of the swash plate 14 is ensured.
- the eccentricity E results in a pulling contact between these peripheral surfaces, which is equivalent to a damped stop.
- Another hydraulic Damping is provided by the fact that the oil film present between these peripheral surfaces acts as damping. The oil film can therefore between the peripheral surfaces 16, 22; 17, 21 continue because the sealing ring 31 for sealing the swash plate 14 on the outside from the peripheral surfaces 16, 22; 17, 21 is arranged.
- the assembly or disassembly of the swash plate 14 takes place through the opening of the housing 1 which can be closed with the cover 3 and which is of correspondingly large size.
- the drive shaft 4 is secured by means of the bearing 5 in the swash plate 14 against displacement in both axial directions, on the one hand by the bearing cover 15 and on the other hand by a locking ring 32.
- the swash plate 14 and the drive shaft 4 optionally with the cylinder drum 7 and the piston-shoe arrangement 25 represent a preassembled component.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Hydraulic Motors (AREA)
Claims (5)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3503437A DE3503437C2 (de) | 1985-02-01 | 1985-02-01 | Axial-Kolbenmaschine |
DE3503437 | 1985-02-01 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0189786A2 EP0189786A2 (fr) | 1986-08-06 |
EP0189786A3 EP0189786A3 (en) | 1987-09-16 |
EP0189786B1 true EP0189786B1 (fr) | 1989-10-04 |
Family
ID=6261419
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86100502A Expired EP0189786B1 (fr) | 1985-02-01 | 1986-01-16 | Machine à pistons axiaux |
Country Status (4)
Country | Link |
---|---|
US (1) | US4771677A (fr) |
EP (1) | EP0189786B1 (fr) |
JP (1) | JPS61178568A (fr) |
DE (2) | DE3503437C2 (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0733820B2 (ja) * | 1988-09-12 | 1995-04-12 | 川崎重工業株式会社 | 斜板式ピストンポンプモータ |
DE4340061C2 (de) * | 1993-11-24 | 1997-02-20 | Linde Ag | Axialkolbenmaschine in Schrägscheibenbauart |
IT1278540B1 (it) * | 1995-12-20 | 1997-11-24 | Faip S R L Off Mec | Pompa per acqua ad alta pressione |
US5979294A (en) * | 1996-02-08 | 1999-11-09 | Whitemoss, Inc. | Method and apparatus for controlling axial pump |
DE19756277A1 (de) * | 1997-12-18 | 1999-07-01 | Peter Kleinedler | Schleifscheibe für Axialkolbenmaschinen |
US6675697B1 (en) | 1998-12-07 | 2004-01-13 | Apis Energy Gmbh | Inclined plate for axial piston motors |
US6224062B1 (en) * | 1998-12-30 | 2001-05-01 | Paul J. DeCanio | Roller skate and skateboard bearing covers |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE584665C (de) * | 1933-09-22 | Heinz Krienelke | Kolbenpumpe | |
DE140375C (fr) * | ||||
US2061144A (en) * | 1932-04-12 | 1936-11-17 | Stoutz Robert De | Piston spinning pump |
US2459786A (en) * | 1945-03-12 | 1949-01-25 | Beaman Bernard | Hydraulic pressure pump or motor |
US2776627A (en) * | 1952-07-10 | 1957-01-08 | Vickers Inc | Power transmission |
GB791992A (en) * | 1955-09-19 | 1958-03-19 | Sundstrand Machine Tool Co | Improvements in or relating to hydraulic pump or motor |
US2915974A (en) * | 1956-07-28 | 1959-12-08 | Danfoss Ved Ingenior Mads Clau | Double-acting rotary piston pump |
US2987046A (en) * | 1958-06-06 | 1961-06-06 | Blackhawk Mfg Co | Ram assemblage |
US3007420A (en) * | 1959-10-07 | 1961-11-07 | Budzich Tadeusz | Hydraulic pump or motor |
DE1453495A1 (de) * | 1963-11-05 | 1969-01-23 | Unipat Ets | Axialkolbenmaschine |
US3177665A (en) * | 1963-11-20 | 1965-04-13 | Sundstrand Corp | Hydrostatic transmission |
LU47926A1 (fr) * | 1965-02-06 | 1965-04-06 | ||
FR1488511A (fr) * | 1966-07-25 | 1967-07-13 | Boulton Aircraft Ltd | Perfectionnements aux pompes et moteurs hydrauliques |
GB1201030A (en) * | 1966-12-01 | 1970-08-05 | Boulton Aircraft Ltd | Swash plate pump or motor |
GB1593545A (en) * | 1978-05-30 | 1981-07-15 | Price E | Bolts |
-
1985
- 1985-02-01 DE DE3503437A patent/DE3503437C2/de not_active Expired
-
1986
- 1986-01-06 US US06/816,275 patent/US4771677A/en not_active Expired - Lifetime
- 1986-01-16 DE DE8686100502T patent/DE3666061D1/de not_active Expired
- 1986-01-16 EP EP86100502A patent/EP0189786B1/fr not_active Expired
- 1986-01-31 JP JP61018276A patent/JPS61178568A/ja active Pending
Non-Patent Citations (1)
Title |
---|
Dubbel, Taschenbuch für den Maschinenbau, 13. Auflage, 1970, Seiten 681-684 * |
Also Published As
Publication number | Publication date |
---|---|
DE3503437A1 (de) | 1986-08-14 |
EP0189786A2 (fr) | 1986-08-06 |
US4771677A (en) | 1988-09-20 |
DE3666061D1 (en) | 1989-11-09 |
EP0189786A3 (en) | 1987-09-16 |
DE3503437C2 (de) | 1987-01-22 |
JPS61178568A (ja) | 1986-08-11 |
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