WO2005064158A1 - Kolbenmaschine, welle und wälzlager für eine kolbenmaschine - Google Patents
Kolbenmaschine, welle und wälzlager für eine kolbenmaschine Download PDFInfo
- Publication number
- WO2005064158A1 WO2005064158A1 PCT/EP2004/011501 EP2004011501W WO2005064158A1 WO 2005064158 A1 WO2005064158 A1 WO 2005064158A1 EP 2004011501 W EP2004011501 W EP 2004011501W WO 2005064158 A1 WO2005064158 A1 WO 2005064158A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bearing
- piston machine
- shaft
- outer regions
- inner ring
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/44—Needle bearings
- F16C19/46—Needle bearings with one row or needles
-
- 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
- F04B1/14—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 stationary cylinders
- F04B1/141—Details or component parts
- F04B1/146—Swash plates; Actuating elements
- F04B1/148—Bearings therefor
-
- 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
- F04B1/2078—Swash plates
- F04B1/2085—Bearings for swash plates or driving axles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
- F16C23/06—Ball or roller bearings
- F16C23/08—Ball or roller bearings self-adjusting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/063—Fixing them on the shaft
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2360/00—Engines or pumps
Definitions
- the invention relates to a piston machine or a shaft or a roller bearing for a piston machine according to the preamble of claims 1, 10 or 15.
- the bearing ring in the pivot bearing is inevitably inclined, which not only leads to constraints in the pivot bearing but also to one-sided loads with correspondingly high surface pressures (so-called edge runners). As a result, the bearing surfaces are subjected to higher loads, which leads to greater wear and a reduction in the life of the pivot bearings.
- the invention is based on the object of designing a piston machine or a shaft or an inner bearing ring for mounting the shaft in the piston machine in such a way that the service life of the rotary bearing in question is extended.
- the axial length of the support area is shortened to a central area of the bearing section, and in both outer areas next to the support area there is a radial play between the bearing section and the inner bearing ring.
- the axial length of the support area is shortened to a central area of the bearing section, the bearing section having a larger diameter in its axial central area than in its outer areas.
- the axial length of the support area is shortened to a central area of the inner bearing ring, and in both outer areas next to the support area the bearing ring has a diameter which is smaller than in the outer areas.
- the configurations according to the invention result in a radial movement play in the outer in the assembled state of the shaft and / or the inner bearing ring Areas between the bearing section and the bearing ring is present, while a central area of the bearing section and the bearing ring fulfills the required supporting function. Due to the radial movement play in the outer areas, there are free spaces on both sides of the shortened support area, into which the bearing section can move when the shaft bends, without radial pressure loads occurring in the end areas of the bearing section. Consequently, the constraints and increased surface pressures resulting from the prior art are also avoided, and the wear of the rotary bearing is reduced and its service life is increased.
- the bearing section also moves into the free spaces on both sides if the bearing inner ring is mounted in excess on the drive shaft in the heated state.
- the length of the shortened support area can be approximately 1/4 to 1/2, in particular approximately 1/3, of the length of the bearing section or the bearing ring. It has been found in experiments that these dimensional ranges lead on the one hand to a sufficiently large supporting area and on the other hand to sufficiently large free spaces on both sides of the supporting area.
- the supporting area itself can be cylindrical on its outer surface.
- the outer regions can be formed by longitudinal regions of the relevant bearing section that are tapered continuously or outwardly.
- the outer regions on the bearing ring can be formed by step-like extensions or divergent extensions at the ends of the bearing ring.
- the configurations according to the invention are suitable for both a plain bearing and a roller bearing. In both cases, the support force of the bearing on the inner bearing ring on the support area of the bearing section or Transfer bearing ring, or vice versa.
- the configurations according to the invention are particularly suitable for a needle bearing in which the radial bearing play is particularly small and therefore even slight deflections of the shaft lead to the above-described loads on the rotary bearing. It should also be emphasized that rolling bearings are particularly sensitive to radial constraints and pressure peaks due to the small tread size.
- FIG. 1 shows an axial piston machine according to the invention in axial section
- Fig. 4 shows the bearing section of FIG. 3 with an inner bearing ring and pushed
- Fig. 5 shows a bearing section according to the invention with an inner bearing ring seated thereon in a modified embodiment.
- the exemplary piston machine designated in its entirety by 1, has a housing 2, in the interior 3 of which a swash plate 4 and a cylinder drum 5 are arranged side by side.
- Piston holes 6 are arranged in the cylinder drum 5 distributed around the circumference, which in the present exemplary embodiment of an axial piston machine extend essentially parallel to a central axis 7 of the cylinder drum 5 and on that of the swash plate 4 facing end face 5a of the cylinder drum 5 are open.
- cylindrical pistons 9 are preferably mounted in an essentially axially displaceable manner and, with their piston heads 9a, delimit working chambers 11 in the cylinder drum 5 in the direction of the swash plate 4.
- the foot ends 9b of the pistons 9 facing the swash plate 4 are each supported by a joint 12 on the swash plate 4, whereby sliding shoes 13 may be present, between which and the foot ends 9b the joints 12, which are preferably designed as ball joints with a ball head and a ball recess, are arranged ,
- the cylinder drum 5 is mounted on a drive shaft 19 which is rotatably mounted in the housing 2 and whose axis of rotation 21 extends coaxially to the central axis 7.
- the housing 2 is formed from a pot-shaped housing part 2a with a housing base 2b and a peripheral wall 2c and a cover 2d forming the housing wall 18, which lies against the free edge of the peripheral wall 2c and is therefore screwed by screws 22 which are indicated.
- the cover 2d To connect the further supply and discharge lines 16, 17, line connections 16a, 17a are provided on the cover 2d.
- the cylinder drum 5 by a rotary driving connection 27, z. B. a toothed clutch, rotatably arranged on the drive shaft 19, which passes through the swash plate 4 fixedly arranged on the housing base 2 or formed therein in a through hole 4a.
- the cylinder drum 5 rotates relative to the swash plate 4 in functional operation, the pistons 9 being displaced longitudinally in the direction of the working chambers 11 and back.
- the bearing sections of the drive shaft 19 which support the inner bearing rings 25a, 26a are designated by 19b, 19c.
- one of the two pivot bearings 25, 26 or both pivot bearings 25, 26 can be designed as described below for the pivot bearing 26 in the cover 2d with reference to FIGS. 3 to 5.
- the bearing section 19c is tapered in cross section on both sides of a central section a. These outer areas located next to the middle section a are designated by b and c.
- the tapering can be a step-shaped tapering or tapering towards the respective end of the bearing section 19c.
- the outer regions b, c are tapered cylindrical outer regions b, c.
- the middle section is preferably also cylindrical. It forms a support area 28 for the inner bearing ring 26a.
- the bearing area 28 is axially in comparison with known designs middle area a shortened and z. B. cylindrical.
- the axial dimension of the support area 28 is approximately 1/4 to 3/4, preferably 1/3, of the length L of the bearing section 19c.
- the radial taper dimension d is at least in the end region of the outer regions b, c 0.05 mm.
- the bearing ring 26a is seated in the bearing area 28 with a fit, which is customary for the inner bearing rings of rolling bearings, without radial play on the bearing section 19c.
- annular free spaces 29a, 29b are present due to the radial play of movement.
- the end regions of the bearing section 19c in question can dip into the free spaces 29a, 29b without exerting constraints and compressive stresses on the bearing ring 27a.
- the support area 28 is cylindrical, when the drive shafts 19 bend in the support area 28, there may be slight compressive stresses with the bearing ring 26a, as a result of which the bearing ring 26a can be slightly extended outwards in its central area, as is indicated by dash-dotted lines in FIG. 4 ,
- FIG. 5 differs from the embodiment described above in that it is not the bearing section 19c but the bearing ring 26a in its central region a which has the support region 28a, in addition to that in FIG the outer areas b, c of the bearing ring 26a is either widened on the inside in a stepped manner or divergently towards its ends. This results in a radial clearance or an annular clearance 29a, 29b in the outer regions b, c between the cylindrical outer surface of the bearing section 19c and the outer regions b, c. With a deflection of the drive shaft 19, the Immerse end areas of the bearing section 19c in these free spaces 29a, 29b with the advantages described above.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Reciprocating Pumps (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04790369A EP1588051B1 (de) | 2003-12-19 | 2004-10-13 | Kolbenmaschine mit welle und wälzlager |
US10/583,004 US7513691B2 (en) | 2003-12-19 | 2004-10-13 | Piston engine, shaft and rolling bearing for a piston engine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10360003A DE10360003A1 (de) | 2003-12-19 | 2003-12-19 | Kolbenmaschine, Welle und Wälzlager für eine Kolbenmaschine |
DE10360003.5 | 2003-12-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005064158A1 true WO2005064158A1 (de) | 2005-07-14 |
Family
ID=34672959
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2004/011501 WO2005064158A1 (de) | 2003-12-19 | 2004-10-13 | Kolbenmaschine, welle und wälzlager für eine kolbenmaschine |
Country Status (4)
Country | Link |
---|---|
US (1) | US7513691B2 (de) |
EP (1) | EP1588051B1 (de) |
DE (1) | DE10360003A1 (de) |
WO (1) | WO2005064158A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8047724B2 (en) * | 2006-03-28 | 2011-11-01 | Jtekt Corporation | Bearing device for wheel |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101563546B (zh) * | 2006-12-06 | 2012-07-18 | 胡斯华纳有限公司 | 内燃机的曲轴轴承装置 |
FR3012536B1 (fr) * | 2013-10-24 | 2015-12-18 | Technoboost | Machine hydraulique comportant un roulement a rouleaux supporte par une forme circulaire bombee |
US9771929B2 (en) | 2014-05-02 | 2017-09-26 | Caterpillar Inc. | Stress reduction in hydrostatic cradle bearing |
DE102014209894A1 (de) | 2014-05-23 | 2015-11-26 | Mahle International Gmbh | Axialkolbenmaschine |
JP6563238B2 (ja) * | 2015-04-10 | 2019-08-21 | 三菱重工サーマルシステムズ株式会社 | 圧縮機 |
CN108194298B (zh) * | 2017-12-29 | 2019-07-05 | 浙江工业大学 | 一种油水分离式滚轮导轨传动的二维柱塞水压泵 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB395886A (en) * | 1932-08-26 | 1933-07-27 | Georg Eisgruber | Closed removable needle bearing |
GB1127975A (en) * | 1966-02-15 | 1968-09-25 | Adamson Stephens Mfg Co | Bearing structures |
DE2450580A1 (de) * | 1974-10-24 | 1976-04-29 | Schaeffler Ohg Industriewerk | Duennwandiger innenlaufring fuer waelzlager |
EP0324324A1 (de) * | 1988-01-11 | 1989-07-19 | SKF Nova AB | Einrichtung zum Befestigen eines Maschinenelementes auf einer Welle |
US20030048965A1 (en) * | 2000-09-19 | 2003-03-13 | Nsk Ltd. | Bearing unit |
DE10220610A1 (de) * | 2002-02-15 | 2003-08-28 | Brueninghaus Hydromatik Gmbh | Drehgleitlager |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2397703A (en) * | 1943-05-14 | 1946-04-02 | Ralph F Stallman | Self-locking shaft lock |
US2659637A (en) * | 1950-06-14 | 1953-11-17 | Roller Bearing Co Of America | Roller bearing for compensating shaft misalignment |
US2947196A (en) * | 1955-11-17 | 1960-08-02 | Fafnir Bearing Co | Cam-follower construction |
US2982587A (en) * | 1958-04-22 | 1961-05-02 | Ingersoll Rand Co | Bearing |
SE357799B (de) * | 1971-10-14 | 1973-07-09 | Atlas Copco Ab | |
US3868151A (en) * | 1973-05-04 | 1975-02-25 | Fmc Corp | Roller bearing with tapered outer race ring |
DE2439334C2 (de) * | 1974-08-16 | 1984-07-19 | INA Wälzlager Schaeffler KG, 8522 Herzogenaurach | Wellenkupplung, insbesondere für Unterwalzen an Spinnereimaschinen |
US4699528A (en) * | 1986-04-21 | 1987-10-13 | Zephyr Manufacturing Company | Rotary assembly having self-positioning bearing, and method |
US4899863A (en) * | 1986-08-12 | 1990-02-13 | Dayco Products-Eaglemotive, Inc. | Method of making a shaft for a clutch for a cooling fan of a motor vehicle |
US5552650A (en) * | 1988-06-09 | 1996-09-03 | Papst Licensing Gmbh | Disk storage device with motor with axially deep flange |
US6053638A (en) * | 1997-01-28 | 2000-04-25 | Nsk Ltd. | Ball bearing device for a swing arm |
DE19824128A1 (de) * | 1998-05-29 | 1999-12-02 | Ksb Ag | Radiallager in Gleitlagerbauart |
JP2001140869A (ja) * | 1999-11-19 | 2001-05-22 | Minebea Co Ltd | 複列軸受 |
JP3961757B2 (ja) * | 2000-09-29 | 2007-08-22 | 株式会社シマノ | 釣り用リールの部品支持構造 |
-
2003
- 2003-12-19 DE DE10360003A patent/DE10360003A1/de not_active Ceased
-
2004
- 2004-10-13 WO PCT/EP2004/011501 patent/WO2005064158A1/de active Application Filing
- 2004-10-13 US US10/583,004 patent/US7513691B2/en not_active Expired - Fee Related
- 2004-10-13 EP EP04790369A patent/EP1588051B1/de not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB395886A (en) * | 1932-08-26 | 1933-07-27 | Georg Eisgruber | Closed removable needle bearing |
GB1127975A (en) * | 1966-02-15 | 1968-09-25 | Adamson Stephens Mfg Co | Bearing structures |
DE2450580A1 (de) * | 1974-10-24 | 1976-04-29 | Schaeffler Ohg Industriewerk | Duennwandiger innenlaufring fuer waelzlager |
EP0324324A1 (de) * | 1988-01-11 | 1989-07-19 | SKF Nova AB | Einrichtung zum Befestigen eines Maschinenelementes auf einer Welle |
US20030048965A1 (en) * | 2000-09-19 | 2003-03-13 | Nsk Ltd. | Bearing unit |
DE10220610A1 (de) * | 2002-02-15 | 2003-08-28 | Brueninghaus Hydromatik Gmbh | Drehgleitlager |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8047724B2 (en) * | 2006-03-28 | 2011-11-01 | Jtekt Corporation | Bearing device for wheel |
Also Published As
Publication number | Publication date |
---|---|
EP1588051A1 (de) | 2005-10-26 |
EP1588051B1 (de) | 2011-07-13 |
US20070144466A1 (en) | 2007-06-28 |
DE10360003A1 (de) | 2005-07-14 |
US7513691B2 (en) | 2009-04-07 |
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