EP0105222A2 - Machine à pistons axiaux - Google Patents
Machine à pistons axiaux Download PDFInfo
- Publication number
- EP0105222A2 EP0105222A2 EP83108866A EP83108866A EP0105222A2 EP 0105222 A2 EP0105222 A2 EP 0105222A2 EP 83108866 A EP83108866 A EP 83108866A EP 83108866 A EP83108866 A EP 83108866A EP 0105222 A2 EP0105222 A2 EP 0105222A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- axial piston
- drive shaft
- bearing housing
- cylinder block
- 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
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
Definitions
- the invention relates to an axial piston machine according to the preamble of the main claim in the swashplate design.
- the pistons of an axial piston machine of swash plate design, supported on an inclined swash plate, are not sealed against the cylinder bores by leakage-free sealing elements, because a certain leakage flow is necessary for the lubrication of the piston sliding surfaces.
- a leakage gap between the piston and the cylinder wall therefore, a certain amount of the pumped medium constantly flows as leakage flow into the machine housing, from where it is returned to the tank.
- the volume of the leakage current is dependent on various influencing variables, the viscosity of the delivery medium being particularly important in relation to the present invention.
- a pump is to be used to pump a low-viscosity medium, such as water or HFA liquids (95-97% water, 5-3% lubricant additive)
- a low-viscosity medium such as water or HFA liquids (95-97% water, 5-3% lubricant additive)
- HFA liquids 95-97% water, 5-3% lubricant additive
- the present invention is based on the requirement to provide a swash plate type axial piston machine which is simple in construction and is suitable for conveying low-viscosity media.
- the axial piston machine has a bearing housing for the bearings of the drive shaft and a machine housing for receiving the pump body.
- the pumped medium and the shaft bearings are housed in separate rooms and independently sealed in a suitable manner.
- the bearing housing which is filled with a suitable lubricant such as grease, is sealed with radial shaft seals, while the machine housing, which is filled with leakage fluid, is sealed off from the drive shaft by a mechanical seal with a standing and a rotating ring, which slide against one another in a sealing manner.
- the forces which are effective during operation are divided advantageously because all the axial forces are transmitted to the machine housing, so that the roller bearings in the bearing housing are only loaded by radial forces.
- the compact, space-saving design allows simple, problem-free assembly and disassembly, because after loosening the fastening screws connecting the housing, the pump body housed in the machine housing can be easily removed from the drive shaft.
- the drive shaft of the axial piston machine is mounted outside of the machine housing 2 in its own bearing housing 3 and is supported on two roller bearings 4 and 5 in its middle length range.
- the bearing housing 3 is on the drive side with a bearing cover 6 and on the machine housing closed side of a flange-shaped sleeve 7 and sealed by radial shaft seals 8 and 9 inserted therein.
- the bearing housing 3 is filled with a suitable lubricant.
- a drum-shaped cylinder block 10 in the pump housing 2 is driven with the drive shaft 1.
- the free end of the drive shaft 1 protruding into the machine housing 2 is provided with serration 11, which engages in a corresponding toothing on the inner wall of the cylinder block 10.
- a certain number of axially directed cylinder bores 12 are arranged in the cylinder block 10 in a circle at the same angular distance from one another to the axis of rotation.
- each cylinder bore 12 there is a longitudinally displaceable piston 13 which is slidably supported with a piston shoe 14 on an inclined, fixed swash plate 15.
- This is mounted independently of the drive shaft 1, which is guided centrally at a lateral distance, on pins 16 arranged at right angles thereto in the machine housing, the inclination angle of the swash plate 15 being adjustable.
- the end face of the cylinder block 10 bears against a fixed control plate 17 which is spherically shaped and in which there are two control openings which are kidney-shaped in cross section.
- a fixed control plate 17 which is spherically shaped and in which there are two control openings which are kidney-shaped in cross section.
- a leakage gap is formed between the cylinder bores 12 and the pistons 13, through which a small amount of the conveyed medium from the cylinder block 10 enters the machine housing 2 with each pressure stroke.
- This leakage liquid is returned via the leakage connection 21 to the tank, not shown.
- the machine housing 2 is sealed off from the bearing housing 3 by a mechanical seal 22, 23, the rotating ring 22 of which is fastened to the drive shaft 1 and the standing ring 23 of which is inserted into the bushing 7 opposite the swash plate 15.
- the space between the radial shaft seal 8 which seals the bearing housing 3 and the standing ring 23 of the mechanical seal 22, 23 which seals the machine housing 2 is connected to a ventilation duct 24 leading to the outside.
- the machine housing 2 is screwed to the outside of the bearing housing 3 in the area of the mechanical seal 22, 23.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT83108866T ATE30455T1 (de) | 1982-09-10 | 1983-09-08 | Axialkolbenmaschine. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3233579 | 1982-09-10 | ||
DE3233579A DE3233579C2 (de) | 1982-09-10 | 1982-09-10 | Axialkolbenmaschine |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0105222A2 true EP0105222A2 (fr) | 1984-04-11 |
EP0105222A3 EP0105222A3 (en) | 1985-05-15 |
EP0105222B1 EP0105222B1 (fr) | 1987-10-28 |
Family
ID=6172889
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP83108866A Expired EP0105222B1 (fr) | 1982-09-10 | 1983-09-08 | Machine à pistons axiaux |
Country Status (4)
Country | Link |
---|---|
US (1) | US4520712A (fr) |
EP (1) | EP0105222B1 (fr) |
AT (1) | ATE30455T1 (fr) |
DE (1) | DE3233579C2 (fr) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3519783A1 (de) * | 1985-06-03 | 1986-12-04 | Danfoss A/S, Nordborg | Axialkolbenmaschine |
US4771676A (en) * | 1986-05-19 | 1988-09-20 | Toshiba Kikai Kabushiki Kaisha | Hydraulic transmission device |
DE3743125A1 (de) * | 1987-12-18 | 1989-07-06 | Brueninghaus Hydraulik Gmbh | Axialkolbenpumpe |
US5105723A (en) * | 1990-04-06 | 1992-04-21 | Zexel Corporation | Swash plate type axial piston pump |
US5135362A (en) * | 1990-04-17 | 1992-08-04 | Martin Francis J | Hydraulic axial piston pump |
US5440878A (en) * | 1992-08-27 | 1995-08-15 | Vernon E. Gleasman | Variable hydraulic machine |
JP3232544B2 (ja) * | 1993-11-24 | 2001-11-26 | 株式会社豊田自動織機 | 車両空調用圧縮機の堰構造 |
US5538401A (en) * | 1994-07-05 | 1996-07-23 | Denison Hydraulics Inc. | Axial piston pump |
FR2721352B1 (fr) * | 1994-06-17 | 1996-09-06 | Leduc Rene Hydro Sa | Pompe à haute pression pour alimenter des injecteurs d'essence pour moteurs à explosion. |
DE102006058355A1 (de) * | 2006-03-10 | 2007-09-13 | Brueninghaus Hydromatik Gmbh | Kombi-Pumpengehäuse für mehrere Nenngrößen |
DE102015006157B3 (de) * | 2015-05-11 | 2016-06-23 | Orpu Pumpenfabrik Gmbh | Kompakte Lagerung einer Pumpenwelle in einer Laternekupplung |
CN114382609A (zh) * | 2021-12-13 | 2022-04-22 | 天津大学 | 往复式高低压自适应补偿密封装置 |
DE202023103491U1 (de) | 2023-06-23 | 2023-08-17 | Orpu Pumpenfabrik Gmbh | Anordnung einer Gleitringdichtung auf einer Motor-/Pumpenwelle |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH424486A (de) * | 1964-09-16 | 1966-11-15 | Mobax Limited | Hydraulische Axialkolbenmaschine |
US3690789A (en) * | 1970-05-01 | 1972-09-12 | Dowty Technical Dev Ltd | Hydraulic apparatus |
FR2140065A1 (fr) * | 1971-05-29 | 1973-01-12 | Galileo Spa Off | |
DE2740821A1 (de) * | 1977-09-10 | 1979-03-22 | Hemscheidt Maschf Hermann | Lagerung der triebwelle einer schraegachsen-axialkolbenmaschine |
JPS57163174A (en) * | 1981-03-31 | 1982-10-07 | Hitachi Ltd | Axial piston machine |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2113167A (en) * | 1935-09-09 | 1938-04-05 | B B B Corp | Water pump seal |
US2157692A (en) * | 1936-04-29 | 1939-05-09 | Waterbury Tool Co | Power transmission |
GB604117A (en) * | 1944-08-15 | 1948-06-29 | Vickers Armstrongs Ltd | Improvements in radial pumps or hydraulic motors |
US2495685A (en) * | 1945-06-08 | 1950-01-31 | Beaman Bernard | Two-stage hydraulic pressure pump |
US2911241A (en) * | 1955-12-13 | 1959-11-03 | Reliance Electric & Eng Co | Oil seal assembly |
US3185488A (en) * | 1961-11-06 | 1965-05-25 | Federal Mogul Bower Bearings | Face seal |
DE1261760B (de) * | 1964-01-14 | 1968-02-22 | Oswald Thoma | Im Triebflansch einer Schraegtrommel-Axialkolbenmaschine (Pumpe oder Motor) laengsbeweglicher Kolbengleitschuh |
US3457873A (en) * | 1967-03-20 | 1969-07-29 | Sperry Rand Corp | Pumping chamber decompression |
GB1235696A (en) * | 1968-05-24 | 1971-06-16 | Laser Eng Dev Ltd | Reciprocating hydraulic pumps and motors of the axial type |
US3643550A (en) * | 1970-02-16 | 1972-02-22 | Sperry Rand Corp | Power transmission |
DE2114923A1 (de) * | 1970-03-31 | 1971-10-14 | Delavan Manufactur"^ Co , west Des Moines, Ia (V St A ) | Druckerzeugende Vorrichtung mit Axialkolben |
FR2110573A5 (fr) * | 1970-10-22 | 1972-06-02 | Citroen Sa | |
US3693508A (en) * | 1970-12-28 | 1972-09-26 | Sperry Rand Corp | Power transmission |
DE2947553C2 (de) * | 1979-11-26 | 1982-03-25 | Hydromatik Gmbh, 7900 Ulm | Lagerung der Triebwelle einer Axialkolbenmaschine in Schrägachsenbauweise |
-
1982
- 1982-09-10 DE DE3233579A patent/DE3233579C2/de not_active Expired
-
1983
- 1983-09-08 EP EP83108866A patent/EP0105222B1/fr not_active Expired
- 1983-09-08 AT AT83108866T patent/ATE30455T1/de not_active IP Right Cessation
- 1983-11-01 US US06/547,566 patent/US4520712A/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH424486A (de) * | 1964-09-16 | 1966-11-15 | Mobax Limited | Hydraulische Axialkolbenmaschine |
US3690789A (en) * | 1970-05-01 | 1972-09-12 | Dowty Technical Dev Ltd | Hydraulic apparatus |
FR2140065A1 (fr) * | 1971-05-29 | 1973-01-12 | Galileo Spa Off | |
DE2740821A1 (de) * | 1977-09-10 | 1979-03-22 | Hemscheidt Maschf Hermann | Lagerung der triebwelle einer schraegachsen-axialkolbenmaschine |
JPS57163174A (en) * | 1981-03-31 | 1982-10-07 | Hitachi Ltd | Axial piston machine |
Non-Patent Citations (2)
Title |
---|
E. MAYER: "Mechanical Seals". Second ed, 1972, Iliffe Books, London, (GB) *seiten 1-7; seite 111, Absatz 1; figur 1.5 * * |
PATENT ABSTRACTS OF JAPAN, Band 7, Nr. 5 (M-184) (1150), Januar 11, 1983, seite 12 & JP-A-57163174 (Hitachi Seisakusho K.K.) 07-10-1982 * |
Also Published As
Publication number | Publication date |
---|---|
DE3233579A1 (de) | 1984-03-15 |
EP0105222A3 (en) | 1985-05-15 |
ATE30455T1 (de) | 1987-11-15 |
US4520712A (en) | 1985-06-04 |
DE3233579C2 (de) | 1984-09-13 |
EP0105222B1 (fr) | 1987-10-28 |
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