WO1994018455A1 - Zahnradmaschine - Google Patents
Zahnradmaschine Download PDFInfo
- Publication number
- WO1994018455A1 WO1994018455A1 PCT/DE1994/000033 DE9400033W WO9418455A1 WO 1994018455 A1 WO1994018455 A1 WO 1994018455A1 DE 9400033 W DE9400033 W DE 9400033W WO 9418455 A1 WO9418455 A1 WO 9418455A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gear
- drive shaft
- driven
- toothing
- width
- Prior art date
Links
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
- F04C2/18—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 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
- 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
-
- 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
- F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
- F04C15/0073—Couplings between rotors and input or output shafts acting by interengaging or mating parts, i.e. positive coupling of rotor and shaft
-
- 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
- Y10T74/00—Machine element or mechanism
- Y10T74/19—Gearing
- Y10T74/19642—Directly cooperating gears
- Y10T74/19679—Spur
Definitions
- the invention is based on a Zahnradma ⁇ chine according to the preamble of claim 1.
- a gear machine is already known from DE-OS 27 05 249, in which the two gears arranged on a drive shaft by means of a toothing extending over the entire width of these gears on the Drive shaft are attached.
- a disadvantage of this known gear machine is that axial forces introduced into the drive shaft, such as arise, for example, when driving a gear machine via a helical drive shaft, are transmitted via the relatively small end face of the toothing to an end bearing. The resulting high surface pressure causes high wear in this bearing.
- the known gear machine for mounting the gears on the drive shaft advantageously requires a toothing which has little radial play and is therefore expensive to manufacture.
- the gear machine according to the invention with the characterizing features of independent claims 1 or 2 has the advantage that axial forces introduced into the drive shaft are transmitted over the entire end face of a driven gear to the front bearing of the drive shaft. This reduces wear on this bearing. It is also particularly advantageous that the driven gearwheels are guided through part of their gearwheel width on the drive shaft in the radial direction, so that a radial clearance-free connection can be established in a simple manner with a corresponding dimensional tolerance between gearwheel and drive shaft. This reduces wear on the teeth. Since the toothing only serves to transmit the drive torque to the gearwheels, toothing forms that can be produced cost-effectively can be used.
- FIG. 1 shows a longitudinal section through a dual gear pump
- FIG. 2 shows a cross section in the direction II-II according to FIG. 1
- FIG. 3 shows a further cross section through a drive shaft and gear wheels in the direction III-III according to FIG. 1
- FIG. 4 a longitudinal section through a gear pump with a pair of gears.
- a duo gear pump 10 has a housing 11, which is closed on the respective end faces by a base plate 12 and an end plate 13.
- a continuous recess 14 is formed in the housing 11, in which the toothed wheels 16, 17, 18 and 19 are arranged.
- the gearwheel pairs 21 and 22 are separated by an intermediate plate 23. This results in two separate delivery units with a common suction chamber 24 and pressure chamber 25.
- the gear wheels 17 and 19 are arranged on a shaft 26 which is mounted in bearing bodies 27 and 28.
- the driven gear wheels 16 and 18 are fixed in a rotationally fixed manner on a drive shaft 31 in the area of the intermediate plate 23 by means of a toothing 30.
- the driven gears 16 and 18 rest against shoulders 29 on the respective end faces of the toothing 30 in a form-fitting manner.
- the drive shaft 31 is driven by a motor (not shown) via a helical toothing 32 and is mounted in a bearing body 33 on the base plate side and in a bearing body 34 on the end plate side.
- a seal 36 provides the seal of the Drive shaft 31 to the face plate 13 safely.
- the pressure pulsations which occur during operation of the pump can be reduced if the number of teeth of the toothing 30 is an even multiple of the number of teeth of the driven gears 16 and 18, the gear pairs 21 and 22 being offset from one another by half a tooth pitch.
- the toothing width b of the driven gear wheels 16 and 18 on the drive shaft 31 is smaller than their half gear wheel width B.
- the dimensional tolerance between the bore of the non-toothed area of the driven gear wheels 16 and 18 and the outer diameter of the non-toothed area of the drive shaft 31 is selected in this way that the driven gears 16 and 18 can be mounted on the drive shaft 31 without radial play.
- the gear pump has only one gear pair 21a with a driven gear 16a and a non-driven gear 17a.
- the gear 16a is secured on the drive shaft 31a in the axial direction by means of a snap ring 37.
- the snap ring 37 engages in a groove formed in the drive shaft 31a.
- the snap ring 37 is arranged in a recess 38 open towards the gear 16a in the bearing body 33a without contact with the wall of the recess 38.
- the snap ring 37 ensures that the tensile force is transmitted to the bearing body 34a with the aid of the entire end face of the gearwheel 16a. Otherwise, the features and advantages already described for the duo gear pump 10 described above apply.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/256,700 US5496163A (en) | 1993-02-05 | 1994-01-18 | Gear machine having shaft toothing for driving a gear |
DE59402723T DE59402723D1 (de) | 1993-02-05 | 1994-01-18 | Zahnradmaschine |
EP94904577A EP0638144B1 (de) | 1993-02-05 | 1994-01-18 | Zahnradmaschine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP4303337.7 | 1993-02-05 | ||
DE4303337A DE4303337C2 (de) | 1993-02-05 | 1993-02-05 | Zahnradmaschine |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994018455A1 true WO1994018455A1 (de) | 1994-08-18 |
Family
ID=6479723
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1994/000033 WO1994018455A1 (de) | 1993-02-05 | 1994-01-18 | Zahnradmaschine |
Country Status (4)
Country | Link |
---|---|
US (1) | US5496163A (de) |
EP (1) | EP0638144B1 (de) |
DE (2) | DE4303337C2 (de) |
WO (1) | WO1994018455A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0656476A1 (de) * | 1993-12-03 | 1995-06-07 | General Signal Corporation | Flüssigkeitsring-Vakuumpumpe und Zusammenbauverfahren |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19519247C2 (de) * | 1995-05-25 | 2000-08-31 | Guenter Kirsten | Schraubenverdichter |
DE19526443C2 (de) * | 1995-07-20 | 1997-09-18 | Bosch Gmbh Robert | Zahnradmaschine |
US6171089B1 (en) | 1998-05-12 | 2001-01-09 | Parker-Hannifin Corporation | External gear pump with drive gear seal |
US6135741A (en) * | 1998-12-23 | 2000-10-24 | Parker-Hannifin Corporation | Recirculating flow path for gear pump |
US6729855B2 (en) * | 2002-02-01 | 2004-05-04 | S & S Cycle, Inc. | Oil pump and gears |
JP4333422B2 (ja) * | 2003-06-02 | 2009-09-16 | 株式会社島津製作所 | 歯車ポンプまたはモータ |
CN100335788C (zh) * | 2004-09-20 | 2007-09-05 | 徐福刚 | 一种液压齿轮泵 |
US7849679B2 (en) | 2008-12-04 | 2010-12-14 | Caterpillar Inc | Fuel delivery system having multi-output pump |
CN103775332B (zh) * | 2014-02-10 | 2016-05-18 | 陕西科技大学 | 一种圆弧齿轮泵 |
JP6448420B2 (ja) * | 2015-03-12 | 2019-01-09 | 株式会社ショーワ | 船舶推進機 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2705249A1 (de) * | 1977-02-09 | 1978-08-10 | Bosch Gmbh Robert | Zahnradmaschine (pumpe oder motor) |
DE2902723A1 (de) * | 1979-01-25 | 1980-07-31 | Zahnradfabrik Friedrichshafen | Pumpe, insbesondere fluegelzellenpumpe, mit einer gleitlagerung |
DE3242274C1 (de) * | 1982-11-15 | 1984-05-30 | Danfoss A/S, Nordborg | Zahnkupplung zwischen Ritzel und Gelenkwelle einer innenachsigen Rotationskolbenmaschine |
EP0157049A2 (de) * | 1983-12-20 | 1985-10-09 | Ssp Pumps Limited | Drehnocken-Pumpe |
EP0205103A2 (de) * | 1985-06-07 | 1986-12-17 | Toyota Jidosha Kabushiki Kaisha | Rotorzusammenbau für Roots-Pumpe |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1014150A (en) * | 1910-05-23 | 1912-01-09 | Gerardus Post Herrick | Rotary engine. |
FR1007959A (fr) * | 1948-04-21 | 1952-05-12 | Const Aeronautiques Du Ct Soc | Compresseur rotatif à deux rotors bi-lobés pour hautes altitudes |
FR1021741A (fr) * | 1949-10-21 | 1953-02-23 | Borg Warner | Perfectionnements relatifs à un mécanisme d'entraînement et à un ensemble de pompes utilisant ce mécanisme d'entraînement |
US4293290A (en) * | 1979-05-04 | 1981-10-06 | Crepaco, Inc. | Positive displacement rotary pump with bearings in countersunk portions of the rotors |
US4699575A (en) * | 1986-02-12 | 1987-10-13 | Robotics, Inc. | Adhesive pump and it's control system |
US4728271A (en) * | 1986-09-02 | 1988-03-01 | Suntec Industries Incorporated | Gear pump with improved pinion mounting |
DE4024067A1 (de) * | 1990-07-28 | 1992-01-30 | Friedhelm Schneider | Zahnradpumpe fuer hochviskose fluessigkeiten |
-
1993
- 1993-02-05 DE DE4303337A patent/DE4303337C2/de not_active Expired - Fee Related
-
1994
- 1994-01-18 DE DE59402723T patent/DE59402723D1/de not_active Expired - Fee Related
- 1994-01-18 EP EP94904577A patent/EP0638144B1/de not_active Expired - Lifetime
- 1994-01-18 US US08/256,700 patent/US5496163A/en not_active Expired - Fee Related
- 1994-01-18 WO PCT/DE1994/000033 patent/WO1994018455A1/de active IP Right Grant
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2705249A1 (de) * | 1977-02-09 | 1978-08-10 | Bosch Gmbh Robert | Zahnradmaschine (pumpe oder motor) |
DE2902723A1 (de) * | 1979-01-25 | 1980-07-31 | Zahnradfabrik Friedrichshafen | Pumpe, insbesondere fluegelzellenpumpe, mit einer gleitlagerung |
DE3242274C1 (de) * | 1982-11-15 | 1984-05-30 | Danfoss A/S, Nordborg | Zahnkupplung zwischen Ritzel und Gelenkwelle einer innenachsigen Rotationskolbenmaschine |
EP0157049A2 (de) * | 1983-12-20 | 1985-10-09 | Ssp Pumps Limited | Drehnocken-Pumpe |
EP0205103A2 (de) * | 1985-06-07 | 1986-12-17 | Toyota Jidosha Kabushiki Kaisha | Rotorzusammenbau für Roots-Pumpe |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0656476A1 (de) * | 1993-12-03 | 1995-06-07 | General Signal Corporation | Flüssigkeitsring-Vakuumpumpe und Zusammenbauverfahren |
Also Published As
Publication number | Publication date |
---|---|
DE4303337C2 (de) | 1995-01-26 |
US5496163A (en) | 1996-03-05 |
DE59402723D1 (de) | 1997-06-19 |
EP0638144A1 (de) | 1995-02-15 |
EP0638144B1 (de) | 1997-05-14 |
DE4303337A1 (de) | 1994-08-11 |
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