EP0004119A2 - Machine à engrenages avec des roues dentées décalées l'une par rapport à l'autre en direction circonférentielle - Google Patents

Machine à engrenages avec des roues dentées décalées l'une par rapport à l'autre en direction circonférentielle Download PDF

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Publication number
EP0004119A2
EP0004119A2 EP79200118A EP79200118A EP0004119A2 EP 0004119 A2 EP0004119 A2 EP 0004119A2 EP 79200118 A EP79200118 A EP 79200118A EP 79200118 A EP79200118 A EP 79200118A EP 0004119 A2 EP0004119 A2 EP 0004119A2
Authority
EP
European Patent Office
Prior art keywords
gear
housing
gears
backlash
shaft
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Withdrawn
Application number
EP79200118A
Other languages
German (de)
English (en)
Other versions
EP0004119A3 (fr
Inventor
Theodorus Henricus Korse
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.)
Korse Theodorus Henricus
Original Assignee
Individual
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.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0004119A2 publication Critical patent/EP0004119A2/fr
Publication of EP0004119A3 publication Critical patent/EP0004119A3/fr
Withdrawn legal-status Critical Current

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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
    • 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
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps 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
    • F04C2/16—Rotary-piston machines or pumps 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 helical teeth, e.g. chevron-shaped, screw type
    • 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
    • F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
    • F04C11/001—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of similar working principle

Definitions

  • the invention relates to a gear machine (pump or motor) with two hydraulically connected in parallel, axially arranged to one another, separated by an intermediate plate from each other with an intermediate plate or in the outer grip or internal engagement without or almost without backlash meshing straight or helical gears, the ten-wheel shafts are rotatably mounted in Housing arranged bearing bodies or in bearing bushes arranged in the housing and / or housing cover.
  • the gearwheels meshing with backlash of the straight-toothed identical gearwheel pairs are offset from one another by half a tenth division in the circumferential direction. This ensures that the current flow rates of the two gear pairs run in opposite phase.
  • the monotonous flow rates in the opposite phase are added, so that the resulting flow rate fluctuation of the gear machine is approximately a quarter of the flow rate fluctuation of a single gear pair.
  • the fluctuation in the flow rate is equal to the difference between the minimum and minimum flow rates, based on the average flow rate.
  • the invention has for its object to provide a gear machine (pump or motor) of the type mentioned, in which not only the flow fluctuation of the gear machine, but also the delivery flow fluctuation of the individual gear pairs is greatly reduced.
  • This object is achieved in that the toothing of the two gears arranged on a gear shaft, viewed in the wheel center, is offset by a quarter tooth pitch in the circumferential direction.
  • the technical progress that can be achieved with the invention is based on several advantages:
  • the flow fluctuation of the individual gear pairs is reduced to approximately a quarter of the flow fluctuation of a comparable gear pair with backlash.
  • the fluctuation in the flow rate of the flow rate of the gear machine is reduced to approximately one sixteenth of this value.
  • the sound pressure level and the pressure pulsation of this gear machine are accordingly very low.
  • Optimal ratios are also achieved when the offset of the gears is up to 50% larger or smaller than a quarter tooth pitch.
  • the web can be formed in the intermediate plate with straight side walls, which means a considerable simplification in manufacture.
  • the web of the intermediate plate has partially have sloping sidewalls.
  • the known instantaneous flow rate 1 which is conveyed by the so-called primary tooth flank acted upon by the tooth force, as a function of the angle of rotation, viewed in the center of the wheel of the toothing of the driving wheel, has the course shown in FIG .
  • the duration of the period of the current flow is measured in radians where Z is the number of teeth on the driving wheel.
  • the straight or helical toothing has no or almost no backlash, not only the primary tooth flank takes part in the conveying process, but also the so-called secondary tooth flank, which is not acted upon by the tooth force. Because the secondary tooth flank is just around the arch comes into play later or earlier, the current flow rate 2 of the secondary tooth flank is compared to the current flow rate 1 of the primary tooth flank around the arc shifted, as can be seen from Fig. 2.
  • the two flow rates 3 and 4 of the individual gear pairs shown in FIG. 3 must run in opposite phase or around an arc to achieve the reduced flow fluctuation according to the invention be out of phase.
  • the sum of the flow rates 3 and 4 is the flow rate 5 of the gear machine with two gear pairs connected in parallel with no or almost no backlash.
  • the delivery flow fluctuation is, as can easily be seen from FIG. 3, about a quarter of the delivery flow fluctuation of a single gear pair without or almost without backlash or one sixteenth of the delivery flow variation of a single gear pair with backlash.
  • the duration of the period is measured in radians
  • the gear machine has a housing 6 which is closed on both sides by housing covers 7 and 8.
  • a continuous housing opening 9 which partially overlaps with two end bores 10 and 11 is formed.
  • the housing opening 9 has the shape of an eight.
  • two bearing bodies 12 and 13 with bearing bores 14 and 15 are arranged, in which a shaft 16 is rotatably mounted.
  • two bearing bodies 17 and 18 are arranged with bearing bores 19 and 20, in which a drive shaft 21 is rotatably mounted.
  • An intermediate plate 30 is arranged between the mutually facing end faces 32 and 33 of two hydraulically connected gear pairs 24 and 25 with gears 26, 27, 28, 29 meshing with no or almost no backlash.
  • the toothings of the gear wheels 26, 28 and 27, 29 according to the invention are in the center of the wheel over an arc of or a quarter tooth pitch offset. Either the gearwheels 26 and 28, 26 and 29 or 27 and 28 can be driving.
  • the recesses 35, 39 on the pressure chamber side and on the suction chamber side are located in the engagement area on the gear wheels. 37,41,36,40,38,42 attached to relieve squeezing liquid.
  • the recesses 35, 36, 37, 38 for relieving good liquid on the leading end faces 33 and 31 from the position are approximately symmetrical to the pole F by a distance in the direction of the suction space S and the recesses 39, 40, 41, 42 for relieving squeeze liquid from the trailing end faces 34 and 32 from the position approximately symmetrically to the pole P by the same distance shifted towards pressure chamber D.
  • the webs were half the width 55 compared to the same toothing with backlash.
  • the toothings of the two gearwheels 43, 44 arranged on a shaft, which are viewed in the center of the wheel, are also offset by about a quarter tooth pitch in the circumferential direction.
  • the teeth of the two gear wheels 47 and 48 arranged on a shaft are in turn offset from one another in the manner according to the invention by about a quarter tooth pitch.
  • the web width 55 has remained unchanged.
  • the web is arranged symmetrically to the surface through the axes of the two shafts.
  • gearwheel trowels 16 and 21 are not mounted in bearing bodies, but rather in bearing housings 51, 52, 53, 54 arranged in a housing 49 and a housing cover 50.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Hydraulic Motors (AREA)
  • Rotary Pumps (AREA)
EP79200118A 1978-03-10 1979-03-09 Machine à engrenages avec des roues dentées décalées l'une par rapport à l'autre en direction circonférentielle Withdrawn EP0004119A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19782810516 DE2810516A1 (de) 1978-03-10 1978-03-10 Zahnradmaschine (pumpe oder motor)
DE2810516 1978-03-10

Publications (2)

Publication Number Publication Date
EP0004119A2 true EP0004119A2 (fr) 1979-09-19
EP0004119A3 EP0004119A3 (fr) 1979-10-31

Family

ID=6034110

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79200118A Withdrawn EP0004119A3 (fr) 1978-03-10 1979-03-09 Machine à engrenages avec des roues dentées décalées l'une par rapport à l'autre en direction circonférentielle

Country Status (2)

Country Link
EP (1) EP0004119A3 (fr)
DE (1) DE2810516A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0685650A1 (fr) * 1994-05-31 1995-12-06 SALAMI S.p.A. Dispositif hydraulique à engrènement extérieur
EP0797002A1 (fr) * 1996-03-21 1997-09-24 Ultra Hydraulics Limited Machines hydrauliques rotatives à déplacement positif
FR2755478A1 (fr) * 1996-11-06 1998-05-07 Georges Briere Sa Pompe volumetrique pour liquides visqueux, notamment pour melasses et masses cuites d'origine sucriere, comportant des rotors a lobes helicoidaux alternativement droits et gauches
WO2021223845A1 (fr) 2020-05-05 2021-11-11 X-Invent Gmbh Engrenage ayant au moins deux rangées de dents décalées axialement et dans le sens de rotation

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19849805C1 (de) * 1998-10-29 2000-03-09 Voith Turbo Kg Baureihe für Zahnradmotoren mit unterschiedlich theoretisch abgebbarem Drehmoment und Verfahren zur Herstellung der einzelnen Zahnradmotoren der Baureihe
JP6448420B2 (ja) * 2015-03-12 2019-01-09 株式会社ショーワ 船舶推進機

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2236980A (en) * 1937-12-02 1941-04-01 Joseph F Keller Liquid pump or motor
FR887209A (fr) * 1941-08-06 1943-11-08 Dispositif de pompe à deux rotors-engrenages à denture hélicoïdale divisée en deux ou davantage de groupes décalés, applicable au filage de <rayonne> ou au débit d'autres fluides
US2382042A (en) * 1943-02-24 1945-08-14 E D Etnyre & Co Positive displacement gear pump
GB609108A (en) * 1946-03-06 1948-09-24 Brown David & Sons Ltd An improvements in or relating to gear-type rotary pumps
DE973994C (de) * 1954-06-26 1960-08-11 Daimler Benz Ag Zahnradpumpe
US3272140A (en) * 1964-04-02 1966-09-13 Monsanto Chemicals Metering pump

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2236980A (en) * 1937-12-02 1941-04-01 Joseph F Keller Liquid pump or motor
FR887209A (fr) * 1941-08-06 1943-11-08 Dispositif de pompe à deux rotors-engrenages à denture hélicoïdale divisée en deux ou davantage de groupes décalés, applicable au filage de <rayonne> ou au débit d'autres fluides
US2382042A (en) * 1943-02-24 1945-08-14 E D Etnyre & Co Positive displacement gear pump
GB609108A (en) * 1946-03-06 1948-09-24 Brown David & Sons Ltd An improvements in or relating to gear-type rotary pumps
DE973994C (de) * 1954-06-26 1960-08-11 Daimler Benz Ag Zahnradpumpe
US3272140A (en) * 1964-04-02 1966-09-13 Monsanto Chemicals Metering pump

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0685650A1 (fr) * 1994-05-31 1995-12-06 SALAMI S.p.A. Dispositif hydraulique à engrènement extérieur
EP0797002A1 (fr) * 1996-03-21 1997-09-24 Ultra Hydraulics Limited Machines hydrauliques rotatives à déplacement positif
FR2755478A1 (fr) * 1996-11-06 1998-05-07 Georges Briere Sa Pompe volumetrique pour liquides visqueux, notamment pour melasses et masses cuites d'origine sucriere, comportant des rotors a lobes helicoidaux alternativement droits et gauches
EP0843094A1 (fr) * 1996-11-06 1998-05-20 Georges Briere S.A. Pompe volumétrique à lobes hélicoídaux
WO2021223845A1 (fr) 2020-05-05 2021-11-11 X-Invent Gmbh Engrenage ayant au moins deux rangées de dents décalées axialement et dans le sens de rotation

Also Published As

Publication number Publication date
DE2810516A1 (de) 1979-09-13
EP0004119A3 (fr) 1979-10-31

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Effective date: 19811118