EP0614011A1 - Machine à engrenages (pompe ou moteur) - Google Patents

Machine à engrenages (pompe ou moteur) Download PDF

Info

Publication number
EP0614011A1
EP0614011A1 EP94101960A EP94101960A EP0614011A1 EP 0614011 A1 EP0614011 A1 EP 0614011A1 EP 94101960 A EP94101960 A EP 94101960A EP 94101960 A EP94101960 A EP 94101960A EP 0614011 A1 EP0614011 A1 EP 0614011A1
Authority
EP
European Patent Office
Prior art keywords
gear
pump
motor
shaft
grooves
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
Application number
EP94101960A
Other languages
German (de)
English (en)
Other versions
EP0614011B1 (fr
Inventor
Guido Dipl.-Ing. Bredenfeld
Klaus Dipl.-Ing. Griese
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0614011A1 publication Critical patent/EP0614011A1/fr
Application granted granted Critical
Publication of EP0614011B1 publication Critical patent/EP0614011B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F04C15/0042—Systems for the equilibration of forces acting on the machines or pump
    • F04C15/0046—Internal leakage control
    • 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
    • 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
    • F04C15/0088—Lubrication
    • 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
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/084—Toothed wheels

Definitions

  • the invention is based on a gear machine (pump or motor) according to the preamble of claim 1.
  • the leakage oil which arises at various points during operation within a gear machine is usually derived from the gear machine via a leak oil connection.
  • a leak oil connection For example, to achieve a defined contact pressure and a defined tightness between the end faces of the gearwheels and the intermediate plate, the leakage oil occurring in the area of the intermediate plate must be drained off.
  • Known gear machines designed for one direction of rotation have grooves, grooves or the like running in the surface of the intermediate plate from the pressure side to the suction side. The disadvantage here is that this principle only works with gear machines with one operating direction, since machines which are reversible in the operating direction have no fixedly defined suction or pressure space.
  • the leakage oil on the shaft seal must be drained without pressure, otherwise the shaft seal would be damaged or destroyed.
  • This is done in the known gear machines by means of a connecting channel that the Connects the area of the shaft sealing ring with the non-driven shaft parallel to the drive shaft, and a continuous longitudinal bore formed in the non-driven shaft, which opens into a leakage oil connection in the housing cover opposite the shaft sealing ring.
  • the leak oil flowing from the tooth chambers to the shaft bearings must be drained off. This is achieved by means of axial relief grooves in the surfaces of the bearing bushes and a further connecting channel in the housing cover, in which the leak oil connection is also located.
  • the production of this connecting channel and the aforementioned longitudinal bore in the non-driven shaft means an additional design and manufacturing technology.
  • the gear machine according to the invention with the characterizing features of claim 1 has the advantage that the leakage of oil in the area of the intermediate plate is removed by means of grooves in the shaft bores of the gear wheels. This makes it possible to use the gear machine according to the invention for both operating directions. Furthermore, the intermediate plate is easier and cheaper to produce due to the elimination of leak oil drains. The leakage oil flows out in a known manner via the relief grooves of the bearing bushes. In addition, the longitudinal bore in the non-driven shaft and one of the two connecting channels in the housing cover between the shafts can also be omitted, which further simplifies the manufacture of the gear machine according to the invention.
  • FIG. 1 shows a longitudinal section through a gear pump
  • FIG. 2 shows a section of the gear pump according to FIG. 1 in a longitudinal section
  • FIG. 3 shows a cross section in the plane III-III according to FIG. 2.
  • a gear pump 10 has a housing 11 which is closed on its respective end faces by a cover 12 and a connection cover 13.
  • a continuous recess 14 is formed in the housing 11, in which the toothed wheels 16 to 19 are arranged, each of which has, for example, eleven teeth 21.
  • the gearwheels 16 and 17 form the gearwheel pair 22 and the gearwheels 18 and 19 form the gearwheel pair 23. These are separated from one another by an intermediate plate 24 in which two through bores 26 and 27 are formed, so that the effect of two individual pumps is not combined with one shown common suction chamber and a pressure chamber.
  • the gears 16 and 18 have shaft bores 34 and are arranged on a drive shaft 28 driven by a motor, not shown, which is sealed by a shaft sealing ring 29 to the connection cover 13.
  • the drive shaft 28 has an external toothing 31 in the area of the intermediate plate 24 and the gearwheels 16 and 18 have an internal toothing 32 that is form-fitting thereto even multiple of the number of teeth of the external toothing 31, so that the gears 16 and 18 are offset by half a tooth pitch on the drive shaft 28.
  • the non-driven gears 17 and 19 also have shaft bores 34 and are arranged on a shaft 33 parallel to the drive shaft 28.
  • the grooves 35 have a semicircular cross-sectional area and run over the entire gearwheel width of the gears 16 to 19.
  • the groove 35 is formed in the region of a tooth 21, the depth T of the groove 35 runs approximately in the middle between the shaft bores 34 and the root diameter of the gears 16 to 19.
  • the cross-sectional areas of the grooves can also be designed differently in other manufacturing processes of the gear wheels or other characteristics of the gear pump.
  • sockets 41 for receiving the shaft ends of the drive shaft 28 and the shaft 33.
  • grooves 42 are formed as pressure fields, which are used to seal and generate a defined contact pressure in the direction of the gear pairs 22 and 23 and the intermediate plate 24 serve.
  • relief grooves 43 are formed on the inside of the bushes 41 and extend axially over the entire length of the bushing.
  • the leakage oil emerging in the through bores 26 and 27 can flow out via the grooves 35 in the gearwheels 16 to 19 and the relief grooves 43 present in the bushes 41 in the direction of the connecting channel 37 or the leakage oil connection 38. There is thus a continuous connection in the axial direction on the surfaces of the drive shaft 28 and the shaft 33, as well as a connection between these two shafts via the connecting channel 37, and a possibility of drainage of the leakage oil through the leakage oil connection 38. These connections allow drainage of the leakage oil independently the operating direction of the gear pump 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Hydraulic Motors (AREA)
EP94101960A 1993-03-05 1994-02-09 Machine à engrenages (pompe ou moteur) Expired - Lifetime EP0614011B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4306885 1993-03-05
DE4306885A DE4306885C2 (de) 1993-03-05 1993-03-05 Zahnradmaschine (Pumpe oder Motor)

Publications (2)

Publication Number Publication Date
EP0614011A1 true EP0614011A1 (fr) 1994-09-07
EP0614011B1 EP0614011B1 (fr) 1996-10-30

Family

ID=6481999

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94101960A Expired - Lifetime EP0614011B1 (fr) 1993-03-05 1994-02-09 Machine à engrenages (pompe ou moteur)

Country Status (3)

Country Link
EP (1) EP0614011B1 (fr)
DE (2) DE4306885C2 (fr)
ES (1) ES2093459T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102705229A (zh) * 2012-01-13 2012-10-03 陈华军 调压齿轮泵

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000291579A (ja) * 1998-10-16 2000-10-17 Toyota Autom Loom Works Ltd 水冷式ガス供給装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3198127A (en) * 1959-05-19 1965-08-03 Robert W Brundage Hydraulic pump or motor
DE1801825A1 (de) * 1968-10-08 1970-06-04 Eckerle Otto Hochdruckinnenzahnradpumpe
GB1252445A (fr) * 1967-10-23 1971-11-03
US3644071A (en) * 1970-11-18 1972-02-22 Us Navy Pump fluid motor with pressurized bearing lubrication system
GB1386796A (en) * 1971-05-18 1975-03-12 Dowty Hydraulic Units Ltd Hydraulic gear pumps
GB1554262A (en) * 1975-06-24 1979-10-17 Kayaba Industry Co Ltd Gear pump
US4289460A (en) * 1979-06-28 1981-09-15 Chandler Evans Inc. Bearing lubrication system for gear pump having clearance between bearing and housing wall for preventing entry of contaminants larger than lubrication passage

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1802561A1 (de) * 1968-10-11 1970-05-27 Licentia Gmbh Heisswasser-Umwaelzpumpe
DE3321380A1 (de) * 1983-06-14 1984-12-20 Klöckner-Humboldt-Deutz AG, 5000 Köln Zahnradmaschine fuer selbstschmierende foerdermedien
US4553915A (en) * 1985-01-08 1985-11-19 Dana Corporation Low pressure lubrication system for fluid device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3198127A (en) * 1959-05-19 1965-08-03 Robert W Brundage Hydraulic pump or motor
GB1252445A (fr) * 1967-10-23 1971-11-03
DE1801825A1 (de) * 1968-10-08 1970-06-04 Eckerle Otto Hochdruckinnenzahnradpumpe
US3644071A (en) * 1970-11-18 1972-02-22 Us Navy Pump fluid motor with pressurized bearing lubrication system
GB1386796A (en) * 1971-05-18 1975-03-12 Dowty Hydraulic Units Ltd Hydraulic gear pumps
GB1554262A (en) * 1975-06-24 1979-10-17 Kayaba Industry Co Ltd Gear pump
US4289460A (en) * 1979-06-28 1981-09-15 Chandler Evans Inc. Bearing lubrication system for gear pump having clearance between bearing and housing wall for preventing entry of contaminants larger than lubrication passage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102705229A (zh) * 2012-01-13 2012-10-03 陈华军 调压齿轮泵
CN102705229B (zh) * 2012-01-13 2015-04-08 陈华军 调压齿轮泵

Also Published As

Publication number Publication date
EP0614011B1 (fr) 1996-10-30
DE59400922D1 (de) 1996-12-05
DE4306885C2 (de) 1995-08-17
DE4306885A1 (de) 1994-09-08
ES2093459T3 (es) 1996-12-16

Similar Documents

Publication Publication Date Title
DE102005056909A1 (de) Hydraulische Zahnradmaschine
EP0614011B1 (fr) Machine à engrenages (pompe ou moteur)
DE3048984A1 (de) Rotationslaufradpumpe oder -motor
DE10010170A1 (de) Inverser Verzahnungsrotorsatz
DE102006021815A1 (de) Hydraulische Zahnradmaschine
DE2029422A1 (de) Wasserkraftmaschine
DE19528631C2 (de) Zahnradmaschine
DE2409119A1 (de) Hydraulische vorrichtung
DE102008019925A1 (de) Hydraulische Zahnradmaschine und Verfahren zum Abdichten einer hydraulischen Zahnradmaschine
EP2063126A2 (fr) Machine hydraulique à roue dentée et procédé d'étanchéification d'une machine hydraulique à roue dentée
DE60208979T2 (de) Fluidströmungsmaschine mit Antriebswellenschmierung und -kühlung
EP1081382B1 (fr) Machine à engrenages
EP0189560B1 (fr) Machine à engrenage (pompe ou moteur)
DE2443600A1 (de) Zahnradmaschine
DE3112470A1 (de) Zahnradmaschine (pumpe oder motor)
CH649133A5 (de) Zahnradpumpenanordnung.
DE2701303C3 (de) Hydraulische Zahnradmaschine
EP0291722B1 (fr) Machine à engrenages (pompe ou moteur)
DE2414760A1 (de) Zahnradpumpe
DE4225804C2 (de) Zahnradmaschine
EP0343166A1 (fr) Machine a engrenages (pompe ou moteur).
DE29624460U1 (de) Innenzahnradmaschine (Pumpe oder Motor)
DE3327352A1 (de) Zahnradmaschine
EP0291703A1 (fr) Machine à engrenages (pompe ou moteur)
DE19840314C1 (de) Dichtungselement

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 ES FR GB IT

17P Request for examination filed

Effective date: 19940921

17Q First examination report despatched

Effective date: 19951023

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT

ET Fr: translation filed
REF Corresponds to:

Ref document number: 59400922

Country of ref document: DE

Date of ref document: 19961205

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2093459

Country of ref document: ES

Kind code of ref document: T3

ITF It: translation for a ep patent filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19970121

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19980126

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19980225

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19980227

Year of fee payment: 5

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990209

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990210

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19990209

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19991029

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20010503

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20020325

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030902

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050209