EP0105222A2 - Machine à pistons axiaux - Google Patents

Machine à pistons axiaux Download PDF

Info

Publication number: EP0105222A2
Authority: EP; European Patent Office
Prior art keywords: housing; axial piston; drive shaft; bearing housing; cylinder block
Prior art date: 1982-09-10
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

Application number

EP83108866A

Other languages

German (de)

English (en)

Other versions

EP0105222A3 (en

EP0105222B1 (fr

Inventor

Reiner Ing. Grad. Hovorka

Josef Ing. Grad. Riedhammer

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Hemscheidt Hermann Maschinenfabrik GmbH and Co

Original Assignee

Hemscheidt Hermann Maschinenfabrik GmbH and Co

Priority date (The priority date 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 date listed.)

1982-09-10

Filing date

1983-09-08

Publication date

1984-04-11

1983-09-08 Application filed by Hemscheidt Hermann Maschinenfabrik GmbH and Co filed Critical Hemscheidt Hermann Maschinenfabrik GmbH and Co

1983-09-08 Priority to AT83108866T priority Critical patent/ATE30455T1/de

1984-04-11 Publication of EP0105222A2 publication Critical patent/EP0105222A2/fr

1985-05-15 Publication of EP0105222A3 publication Critical patent/EP0105222A3/de

1987-10-28 Application granted granted Critical

1987-10-28 Publication of EP0105222B1 publication Critical patent/EP0105222B1/fr

Status Expired legal-status Critical Current

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)

EP83108866A 1982-09-10 1983-09-08 Machine à pistons axiaux Expired EP0105222B1 (fr)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Legal Events

Date	Code	Title	Description
1984-02-11	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1984-04-11	AK	Designated contracting states	Designated state(s): AT CH FR GB IT LI NL SE
1985-03-14	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1985-05-15	AK	Designated contracting states	Designated state(s): AT CH FR GB IT LI NL SE
1985-11-13	17P	Request for examination filed	Effective date: 19850905
1986-05-28	17Q	First examination report despatched	Effective date: 19860411
1987-09-12	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1987-10-28	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): AT CH FR GB IT LI NL SE
1987-10-28	REF	Corresponds to:	Ref document number: 30455 Country of ref document: AT Date of ref document: 19871115 Kind code of ref document: T
1987-11-04	ITF	It: translation for a ep patent filed	Owner name: JACOBACCI & PERANI S.P.A.
1988-01-08	ET	Fr: translation filed
1988-02-24	GBT	Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
1989-04-11	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1989-04-11	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1989-05-31	26N	No opposition filed
1989-08-08	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: SE Payment date: 19890808 Year of fee payment: 7
1989-08-17	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 19890817 Year of fee payment: 7
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1989-09-14	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: AT Payment date: 19890914 Year of fee payment: 7
1989-09-30	ITTA	It: last paid annual fee
1989-09-30	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: NL Payment date: 19890930 Year of fee payment: 7
1989-10-31	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 19891031 Year of fee payment: 7
1990-09-08	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: GB Effective date: 19900908 Ref country code: AT Effective date: 19900908
1990-09-09	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: SE Effective date: 19900909
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1991-04-01	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: NL Effective date: 19910401
1991-05-08	GBPC	Gb: european patent ceased through non-payment of renewal fee
1991-05-16	NLV4	Nl: lapsed or anulled due to non-payment of the annual fee
1991-05-30	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: FR Effective date: 19910530
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1995-01-31	EUG	Se: european patent has lapsed	Ref document number: 83108866.1 Effective date: 19910527

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