EP1756426A1 - Pumpe - Google Patents
PumpeInfo
- Publication number
- EP1756426A1 EP1756426A1 EP05746325A EP05746325A EP1756426A1 EP 1756426 A1 EP1756426 A1 EP 1756426A1 EP 05746325 A EP05746325 A EP 05746325A EP 05746325 A EP05746325 A EP 05746325A EP 1756426 A1 EP1756426 A1 EP 1756426A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- toothing
- shaft
- pump
- teeth
- 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
- 230000035939 shock Effects 0.000 description 4
- 238000013016 damping Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- 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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
- F04C15/0076—Fixing rotors on shafts, e.g. by clamping together hub and shaft
-
- 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
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
-
- 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
- F04C2/00—Rotary-piston machines or pumps
- F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
- F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
-
- 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
- Y10T403/00—Joints and connections
- Y10T403/70—Interfitted members
- Y10T403/7009—Rotary binding cam or wedge
-
- 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
- Y10T403/00—Joints and connections
- Y10T403/70—Interfitted members
- Y10T403/7026—Longitudinally splined or fluted rod
- Y10T403/7035—Specific angle or shape of rib, key, groove, or shoulder
Definitions
- the invention relates to a pump, in particular a vane pump or roller cell pump or gear pump, with a rotation group which has, inter alia, a rotor with radially displaceable vanes or rollers or gears, and with a drive shaft, the drive shaft and the rotor or a gear are connected to one another by a toothing on the drive shaft and on the rotor or on the gearwheel for rotary driving.
- Such pumps are known.
- the pumps have, for example, splined shaft connections with involute flanks according to DIN 5480 or splined shaft connections with straight flanks according to DIN 5463. Both types of connections do not have an axial crowning on the toothing, so that it is not possible to compensate for misalignment between the drive partners. Due to the slight play between the tooth flanks, torsional impacts from the drive shaft are also passed on to the drive partners without damping, so that wear on the drive partners is promoted.
- the object of the invention is to present a pump which does not have these disadvantages.
- a pump in particular a vane pump or roller cell pump or gear pump, with a rotation group which, among other things, has a rotor with radially displaceable vanes or rollers or gear wheels, and with a drive shaft, the drive shaft and the rotor or a gear wheel are connected to one another by a toothing on the drive shaft and on the rotor for rotational driving, the toothing according to the invention being embodied axially crowned and radially outside-centered.
- the external centering has the advantage that it can support transverse forces. With two-stroke vane pumps, the external centering ensures better centering.
- a pump is preferred in which the toothing additionally has a circumferential play between the tooth flanks.
- a pump according to the invention is characterized in that the circumferential play comprises an angular range of 3 ° to 12 °, preferably 6 °.
- a pump is also preferred in which the toothing can additionally be subjected to a transverse force.
- a pump according to the invention is characterized in that the transverse force on the outer centering surfaces generates tangential frictional forces between the drive shaft and the rotor or the gearwheel. This has the advantage that torsional shocks can be dampened by the circumferential play and the frictional forces.
- a pump in which the tooth flanks of the toothing have the shape of an involute toothing.
- a pump is also preferred in which the flanks can be spherical in the axial direction.
- a pump according to the invention is characterized in that the teeth of the shaft are made wider than the teeth of the rotor or the gear wheel. This has the advantage that the teeth of the shaft, which have to absorb the transverse force and generate the frictional torque, can have a correspondingly higher strength.
- a pump in which the teeth of the shaft are more than twice as wide as the teeth of the rotor or of the gearwheel is also preferred.
- Figure 1 shows a top view of a rotor with teeth according to the invention.
- Figure 2 shows an enlargement of the rotor teeth.
- Figure 3 shows one end of a drive shaft with the toothing according to the invention.
- Figure 4 shows an enlarged cross section of the teeth of the drive shaft.
- FIG. 5 shows a top view of the assembly of a vane pump with the toothing according to the invention between the drive shaft and the rotor.
- FIG. 1 shows a rotor 1 of a six-vane vane pump with internal teeth according to the invention.
- the rotor contains six slots 3, in which vanes (not shown here) are mounted so as to be radially displaceable, which slide with their wing heads along a corresponding cam ring contour of the vane pump.
- the rotor contains in its center a toothing with four teeth 7, which are shown with a bevel from the rotor to the inside.
- the rotor toothing is shown enlarged in FIG.
- the four teeth 7 have flanks 9, which are designed in the form of involute teeth.
- the tooth feet 13 open into a root circle diameter 11, which serves as an outer centering circle between the rotor teeth and the shaft teeth.
- the toothed end 15 of a drive shaft 17 is shown.
- the toothed shaft end 15 has four teeth 19, which are slightly spherical in the axial direction on their tooth tips 21, which is difficult to see in the illustration.
- the shaft end 15 ends in a centering and mounting tip 22, which accordingly facilitates the mounting of the shaft in the rotor.
- the teeth 19 have a correspondingly large width, as can be seen better in FIG. 4.
- the toothing of the shaft is shown in cross section in FIG.
- the four teeth 19 have a relatively large width with a tooth head surface 24, this surface representing a circular outer diameter, which ensures the centering of the rotor on the shaft.
- the circular outer diameter 23 of the shaft toothing merges into an involute tooth flank 27, which then merges into a root circle 29 of the toothing.
- the width of the shaft teeth 19 is decidedly larger than the width of the rotor teeth 7. This is the intention according to the invention, since the shaft toothing must absorb both the transverse forces acting on the rotor and the drive torque from the Shaft in the rotor. This requires a corresponding material cross section of the shaft, in particular the shaft toothing.
- Known gears have corresponding problems here, particularly when absorbing shear forces.
- a stroke contour ring 35 is mounted within a pump housing 33, which is supported within the housing by a pin 39 in a round hole and by means of a further pin 37 in an elongated hole.
- the stroke contour ring 35 contains a stroke contour 41, which in this case is circular, but in other cases, for example in the case of two-stroke vane pumps, can also have any other contours.
- Six blades 43 which are mounted in a radially sliding manner in the slots of the rotor 1, slide with their blade heads along the stroke contour 41 and thus generate suction and displacement spaces.
- the function of such a vane pump is known and requires no further explanation here.
- the pump As a single-stroke vane pump, generates a radial force 47, shown here by an arrow, on the rotor due to the position of its pressurized cell, for example cell 45, which is generated by the rotor teeth is transmitted to the shaft and must be caught by the shaft 17.
- the radial force is applied to the circular via the circular toothing surface 11 of the rotor Transfer toothing surface 24 of the shaft, these two portions of the toothing form an outer diameter centering on the shaft.
- a further feature of the toothing according to the invention is that there is a play 49 between the teeth 7 of the rotor and the teeth 19 of the shaft, which can include an angular range of 3 ° to 12 °, preferably 6 °.
- the advantage of this game is that, when the shaft is subjected to slight torsional shocks, the torsional shocks are not positively transmitted to the rotor within this play area.
- the frictional forces occurring between the outer diameter 23 of the shaft toothing 19 and the inner diameter 11 of the rotor toothing 7 act as damping forces between the two movements of the rotor and shaft.
- the inventive solution to this toothing thus consists in the combination of the advantages of an outer-diameter-centered splined shaft connection, a toothed shaft connection with involute flanks, the crowning of the toothing in the axial direction for intercepting angular errors between the rotor and shaft and an increased play between the tooth flanks.
- the invention is particularly useful for pumps which are stressed by their location with torsional vibrations, such as. B. in diesel feed pumps, in which the diesel engine causes corresponding vibrations on the drive shaft.
- the axial crowning of the toothing serves to compensate for the possible misalignment of the rotor with respect to the drive shaft, which is fastened, for example, to a camshaft of the internal combustion engine.
- the outer diameter centering of the toothing on the shaft supports the lateral forces during operation. This prevents a relative movement of the drive partners along the tooth flanks and thus reduces the wear of the toothing compared to a conventional toothing.
- the friction on the outer diameter centering of the teeth of the drive partners is used to dampen the torsional vibrations.
- the increased play between the tooth flanks gives the drive partners the opportunity to twist relative to each other and to dampen the effects of the torsional vibrations with the friction on the outer diameter centering. This minimizes or eliminates the contact shocks on the tooth flanks due to torsional vibrations, which leads to minimization of wear.
- the invention can also be used for other pumps, such as. B. can be used for gear pumps, in which the torque entrainment between the drive shaft and the gear driven by the shaft is also acted upon by corresponding transverse forces.
- this toothing is advantageous because the outer diameter centering of the shaft toothing and Inner diameter centering of the rotor ensures better centering of the shaft than known gears.
- a possible misalignment of the rotor with respect to the shaft can be compensated for by the axial crowning of this toothing according to the invention.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Rotary Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004022670 | 2004-05-07 | ||
PCT/DE2005/000800 WO2005108791A1 (de) | 2004-05-07 | 2005-04-30 | Pumpe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1756426A1 true EP1756426A1 (de) | 2007-02-28 |
EP1756426B1 EP1756426B1 (de) | 2017-04-05 |
Family
ID=34968623
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05746325.9A Active EP1756426B1 (de) | 2004-05-07 | 2005-04-30 | Pumpe |
Country Status (4)
Country | Link |
---|---|
US (1) | US7695262B2 (de) |
EP (1) | EP1756426B1 (de) |
DE (1) | DE112005001635A5 (de) |
WO (1) | WO2005108791A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107438699A (zh) * | 2015-03-02 | 2017-12-05 | 标致雪铁龙汽车股份有限公司 | 叶片泵 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7695262B2 (en) | 2004-05-07 | 2010-04-13 | Ixetic Bad Homburg Gmbh | Pump having toothing on the rotary and drive shaft |
DE102006012868B4 (de) * | 2006-03-21 | 2021-02-04 | Robert Bosch Gmbh | Verdrängerpumpe |
KR20150061632A (ko) | 2012-07-24 | 2015-06-04 | 블렉펙스, 엘엘씨 | 눈병을 치료하기 위한 디바이스 |
CN106762857A (zh) * | 2015-11-23 | 2017-05-31 | 李世福 | 拨动式流体移动器 |
CN109012958B (zh) * | 2018-08-01 | 2020-11-03 | 阜阳市顺亚智能设备有限公司 | 一种金属破碎机的挠性破碎装置 |
WO2020082010A1 (en) | 2018-10-18 | 2020-04-23 | Nebraska Irrigation, Inc. | Improved inline coupler |
Family Cites Families (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2182072A (en) * | 1937-10-11 | 1939-12-05 | Eddington Metal Specialty Co | Rotary pump |
US2297390A (en) * | 1939-01-18 | 1942-09-29 | Burger Peter | Splined connection |
US2389728A (en) * | 1943-10-14 | 1945-11-27 | Myron F Hill | Elliptical contour for rotor teeth |
DE1063036B (de) | 1954-07-26 | 1959-08-06 | Jabsco Pump Company | Befestigung eines Pumpenlaufrades auf seiner Welle |
US2989951A (en) * | 1959-04-29 | 1961-06-27 | Germane Corp | Rotary fluid pressure device |
US3247803A (en) * | 1963-03-20 | 1966-04-26 | Chrysler Corp | Hydraulic pump |
US3288078A (en) * | 1964-08-25 | 1966-11-29 | Trw Inc | Hydraulic device |
US3606598A (en) * | 1970-04-08 | 1971-09-20 | Eaton Yale & Towne | Fluid operated motor |
DE2146972C2 (de) | 1971-09-20 | 1982-09-30 | TRW Inc., 44117 Cleveland, Ohio | Innenachsige Drehkolbenmaschine mit Kämmeingriff und festpunktlos gelagertem Rotor |
US3862814A (en) | 1973-08-08 | 1975-01-28 | Eaton Corp | Lubrication system for a hydraulic device |
DE2631152C2 (de) * | 1976-07-10 | 1985-08-08 | Volkswagenwerk Ag, 3180 Wolfsburg | Flügelzellen-Vakuumpumpe |
US4171938A (en) * | 1977-11-21 | 1979-10-23 | Eaton Corporation | Fluid pressure operated pump or motor |
US4424013A (en) * | 1981-01-19 | 1984-01-03 | Bauman Richard H | Energized-fluid machine |
DE3242274C1 (de) * | 1982-11-15 | 1984-05-30 | Danfoss A/S, Nordborg | Zahnkupplung zwischen Ritzel und Gelenkwelle einer innenachsigen Rotationskolbenmaschine |
CN1007545B (zh) | 1985-08-24 | 1990-04-11 | 沈培基 | 摆线等距线齿轮传动副及其装置 |
US5237893A (en) * | 1990-05-22 | 1993-08-24 | Textron Inc. | Driver with fastener retention means |
US5083909A (en) * | 1990-11-29 | 1992-01-28 | The United States Of America As Represented By The Secretary Of The Navy | Seawater hydraulic vane type pump |
DE19957886A1 (de) | 1998-12-07 | 2000-07-20 | Bosch Braking Systems Co | Verstellpumpe |
DE19933822A1 (de) | 1999-07-20 | 2001-02-01 | Zahnradfabrik Friedrichshafen | Leistungsverzweigungsgetriebe |
DE10011065A1 (de) * | 2000-03-07 | 2001-09-13 | Delphi Tech Inc | Kupplung zwischen zwei Wellen |
DE10053938A1 (de) * | 2000-10-31 | 2002-05-16 | Nord Micro Ag & Co Ohg | Welle- und Welle-Nabe-Verbindung zur Übertragung von Drehmomenten |
DE10235279A1 (de) * | 2002-08-02 | 2004-02-19 | Zf Friedrichshafen Ag | Antriebsstrang |
US6932587B2 (en) * | 2002-09-13 | 2005-08-23 | Parker-Hannifin Corporation | Gerotor motor with valve in rotor |
DE102004009838A1 (de) | 2004-02-28 | 2005-09-22 | Zf Lenksysteme Gmbh | Flügelzellenpumpe |
US7695262B2 (en) | 2004-05-07 | 2010-04-13 | Ixetic Bad Homburg Gmbh | Pump having toothing on the rotary and drive shaft |
-
2005
- 2005-04-30 US US11/579,647 patent/US7695262B2/en active Active
- 2005-04-30 DE DE112005001635T patent/DE112005001635A5/de not_active Withdrawn
- 2005-04-30 WO PCT/DE2005/000800 patent/WO2005108791A1/de active Application Filing
- 2005-04-30 EP EP05746325.9A patent/EP1756426B1/de active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2005108791A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107438699A (zh) * | 2015-03-02 | 2017-12-05 | 标致雪铁龙汽车股份有限公司 | 叶片泵 |
CN107438699B (zh) * | 2015-03-02 | 2020-07-14 | 标致雪铁龙汽车股份有限公司 | 叶片泵 |
Also Published As
Publication number | Publication date |
---|---|
US20080260563A1 (en) | 2008-10-23 |
DE112005001635A5 (de) | 2007-05-31 |
US7695262B2 (en) | 2010-04-13 |
WO2005108791A1 (de) | 2005-11-17 |
EP1756426B1 (de) | 2017-04-05 |
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