EP0178392A1 - Zahnradmaschine - Google Patents
Zahnradmaschine Download PDFInfo
- Publication number
- EP0178392A1 EP0178392A1 EP85109021A EP85109021A EP0178392A1 EP 0178392 A1 EP0178392 A1 EP 0178392A1 EP 85109021 A EP85109021 A EP 85109021A EP 85109021 A EP85109021 A EP 85109021A EP 0178392 A1 EP0178392 A1 EP 0178392A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gear
- machine according
- machine
- gear machine
- lubricating varnish
- 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.)
- Withdrawn
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C1/00—Rotary-piston machines or engines
- F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
- F01C1/082—Details specially related to intermeshing engagement type machines or engines
- F01C1/086—Carter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C1/00—Rotary-piston machines or engines
- F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
- F01C1/12—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type
- F01C1/14—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F01C1/18—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2230/00—Manufacture
- F04C2230/90—Improving properties of machine parts
- F04C2230/91—Coating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2203/00—Non-metallic inorganic materials
- F05C2203/08—Ceramics; Oxides
- F05C2203/0804—Non-oxide ceramics
- F05C2203/0856—Sulfides
- F05C2203/086—Sulfides of molybdenum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2253/00—Other material characteristics; Treatment of material
- F05C2253/12—Coating
Definitions
- the invention relates to a gear machine according to the preamble of the main claim.
- a so-called wear plate made of a relatively soft material, for example, is used in the housing and the gear side faces for the purpose of reducing wear and improving the emergency running properties.
- B. bronze This makes the machine more expensive because an additional part is necessary.
- the gear machine according to the invention with the characterizing feature of the main claim has the advantage of reducing wear on the parts mentioned with the least possible effort.
- the gear machine is, for example, of the type in which two gears mesh with one another in external engagement, the shafts of which are mounted in bearing bushes.
- the flat sides of the bushings facing the gear side surfaces are coated with a layer of molybdenum disulfide.
- the coating can be, for example, a lacquer which is applied by brushing, rolling or spraying and is then baked at temperatures of 180 to 230 ° C.
- the coating reduces wear and improves lubrication so that local overheating is avoided. This improves the emergency running properties of the gear machine, the mechanical efficiency due to lower friction and the volumetric efficiency in the long run, the latter in that the wear is reduced.
- Such a coating is of course also possible in gear machines, the teeth of which mesh with one another on the inside. In the case of so-called plate pumps, the housing cover lies directly on the gear side surfaces. A coating with the material mentioned is also advantageous there.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sliding-Contact Bearings (AREA)
- General Details Of Gearings (AREA)
- Gears, Cams (AREA)
Abstract
Description
- Die Erfindung geht aus von einer Zahnradmaschine nach der Gattung des Hauptanspruchs. Bei einer derartigen bekannten Maschine ist in deren Gehäuse und den Zahnradseitenflächen zugewandt zwecks Verschleißminderung und Verbesserung der Notlaufeigenschaften eine sogenannte Verschleißscheibe aus relativ weichem Werkstoff, z. B. Bronze, angeordnet. Hierdurch wird die Maschine verteuert, da ein zusätzliches Teil notwendig ist.
- Die erfindungsgemäße Zahnradmaschine mit dem kennzeichnenden Merkmal des Hauptanspruchs hat demgegenüber den Vorteil, bei geringstmöglichem Aufwand den Verschleiß an den genannten Teilen zu vermindern.
- Die Zahnradmaschine ist beispielsweise von der Gattung, bei der zwei Zahnräder im Außeneingriff miteinander kämmen, deren Wellen in Lagerbuchsen gelagert sind. Die den Zahnradseitenflächen zugewandten flachen Seiten der Buchsen sind mit einer Schicht aus Molybdändisulfid beschichtet. Die Beschichtung kann beispielsweise ein Lack sein, der durch Pinseln, Rollen oder Spritzen aufgebracht ist und anschließend bei Temperaturen von 180 bis 230 0c eingebrannt wird. Die Beschichtung vermindert den Verschleiß und verbessert die Schmierung, so daß örtliche Überhitzungen vermieden werden. Dadurch werden die Notlaufeigenschaften der Zahnradmaschine, der mechanische Wirkungsgrad aufgrund geringerer Reibung und der volumetrische Wirkungsgrad auf Dauer verbessert, letzterer dadurch, daß der Verschleiß verringert ist. Eine derartige Beschichtung ist selbstverständlich auch bei Zahnradmaschinen möglich, deren Zähne im Inneneingriff kämmen. Bei sogenannten Plattenpumpen liegen die Gehäusedeckel unmittelbar an den Zahnradseitenflächen an. Auch dort ist eine Beschichtung mit dem genannten Werkstoff vorteilhaft.
Claims (4)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE8424731U | 1984-08-21 | ||
DE19848424731 DE8424731U1 (de) | 1984-08-21 | 1984-08-21 | Zahnradmaschine |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0178392A1 true EP0178392A1 (de) | 1986-04-23 |
Family
ID=6769977
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85109021A Withdrawn EP0178392A1 (de) | 1984-08-21 | 1985-07-19 | Zahnradmaschine |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0178392A1 (de) |
BR (1) | BR8503976A (de) |
DE (1) | DE8424731U1 (de) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0290864A2 (de) * | 1987-05-14 | 1988-11-17 | A.G. Kühnle, Kopp & Kausch | Innenachsige Drehkolbenmaschine |
US5244367A (en) * | 1990-11-30 | 1993-09-14 | Aeroquip Corporation | Gear pump with a resilient means for biasing a side wear plate |
US5727934A (en) * | 1995-10-30 | 1998-03-17 | Mitsubishi Jukogyo Kabushiki Kaisha | Scroll type fluid machine having a thin plate for each scroll |
WO2003056138A1 (en) * | 2001-12-21 | 2003-07-10 | Charles Neill | Improvement in and relating to prime movers |
US20090304541A1 (en) * | 2006-05-30 | 2009-12-10 | Trw Automotive Gmbh | Gear pump, especially for a power steering system |
WO2012048940A3 (de) * | 2010-10-14 | 2013-04-18 | Robert Bosch Gmbh | Zahnradpumpe zur förderung einer flüssigkeit |
CN106246533A (zh) * | 2015-06-09 | 2016-12-21 | 松下电器产业株式会社 | 液体用泵和兰金循环装置 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2905376A (en) * | 1958-01-29 | 1959-09-22 | Paul H Davey Jr | Light metal vane for rotary compressor |
US3238883A (en) * | 1964-03-09 | 1966-03-08 | Micro Pump Corp | Magnetic drive gear pump |
FR1532606A (fr) * | 1967-06-01 | 1968-07-12 | Dispositif anti-friction pour pompe ou moteur hydraulique tournant | |
DE1553063A1 (de) * | 1965-10-11 | 1970-07-16 | Gen Motors Corp | Fluegelkolbenpumpe |
FR2147685A5 (de) * | 1971-07-27 | 1973-03-09 | Bosch | |
GB2060076A (en) * | 1979-10-05 | 1981-04-29 | Bosch Gmbh Robert | Rotary Positive-displacement Fluid-machines |
-
1984
- 1984-08-21 DE DE19848424731 patent/DE8424731U1/de not_active Expired
-
1985
- 1985-07-19 EP EP85109021A patent/EP0178392A1/de not_active Withdrawn
- 1985-08-20 BR BR8503976A patent/BR8503976A/pt unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2905376A (en) * | 1958-01-29 | 1959-09-22 | Paul H Davey Jr | Light metal vane for rotary compressor |
US3238883A (en) * | 1964-03-09 | 1966-03-08 | Micro Pump Corp | Magnetic drive gear pump |
DE1553063A1 (de) * | 1965-10-11 | 1970-07-16 | Gen Motors Corp | Fluegelkolbenpumpe |
FR1532606A (fr) * | 1967-06-01 | 1968-07-12 | Dispositif anti-friction pour pompe ou moteur hydraulique tournant | |
FR2147685A5 (de) * | 1971-07-27 | 1973-03-09 | Bosch | |
GB2060076A (en) * | 1979-10-05 | 1981-04-29 | Bosch Gmbh Robert | Rotary Positive-displacement Fluid-machines |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0290864A2 (de) * | 1987-05-14 | 1988-11-17 | A.G. Kühnle, Kopp & Kausch | Innenachsige Drehkolbenmaschine |
EP0290864B1 (de) * | 1987-05-14 | 1991-10-16 | A.G. Kühnle, Kopp & Kausch | Innenachsige Drehkolbenmaschine |
US5244367A (en) * | 1990-11-30 | 1993-09-14 | Aeroquip Corporation | Gear pump with a resilient means for biasing a side wear plate |
ES2099652A1 (es) * | 1990-11-30 | 1997-05-16 | Aeroquip Ag | Bomba de engranajes para un sistema dispensador de cantidades dosificadas de liquido. |
US5727934A (en) * | 1995-10-30 | 1998-03-17 | Mitsubishi Jukogyo Kabushiki Kaisha | Scroll type fluid machine having a thin plate for each scroll |
WO2003056138A1 (en) * | 2001-12-21 | 2003-07-10 | Charles Neill | Improvement in and relating to prime movers |
US20090304541A1 (en) * | 2006-05-30 | 2009-12-10 | Trw Automotive Gmbh | Gear pump, especially for a power steering system |
US8303282B2 (en) * | 2006-05-30 | 2012-11-06 | Trw Automotive Gmbh | Gear pump for a power steering system |
WO2012048940A3 (de) * | 2010-10-14 | 2013-04-18 | Robert Bosch Gmbh | Zahnradpumpe zur förderung einer flüssigkeit |
CN106246533A (zh) * | 2015-06-09 | 2016-12-21 | 松下电器产业株式会社 | 液体用泵和兰金循环装置 |
CN106246533B (zh) * | 2015-06-09 | 2019-11-22 | 松下电器产业株式会社 | 液体用泵和兰金循环装置 |
Also Published As
Publication number | Publication date |
---|---|
DE8424731U1 (de) | 1985-12-19 |
BR8503976A (pt) | 1986-06-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
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 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR GB IT |
|
17P | Request for examination filed |
Effective date: 19860521 |
|
17Q | First examination report despatched |
Effective date: 19861120 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Withdrawal date: 19870321 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: MUELLER, KARL-HEINZ, DIPL.-ING. Inventor name: MAYER, SIEGFIED Inventor name: GRIESE, KLAUS, DIPL-ING. |