EP2180187A2 - Machine à engrenage - Google Patents

Machine à engrenage Download PDF

Info

Publication number
EP2180187A2
EP2180187A2 EP20090012734 EP09012734A EP2180187A2 EP 2180187 A2 EP2180187 A2 EP 2180187A2 EP 20090012734 EP20090012734 EP 20090012734 EP 09012734 A EP09012734 A EP 09012734A EP 2180187 A2 EP2180187 A2 EP 2180187A2
Authority
EP
European Patent Office
Prior art keywords
leakage oil
magnet
gear
machine according
gear machine
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Withdrawn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
EP20090012734
Other languages
German (de)
English (en)
Inventor
Guido Bredenfeld
Ulrich Lendl
Klaus 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 EP2180187A2 publication Critical patent/EP2180187A2/fr
Withdrawn legal-status Critical Current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
    • 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
    • F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
    • F04C13/005—Removing contaminants, deposits or scale from the pump; Cleaning
    • 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
    • F04C2240/00—Components
    • F04C2240/30—Casings or housings
    • 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
    • F04C2240/00—Components
    • F04C2240/80—Other components
    • F04C2240/81—Sensor, e.g. electronic sensor for control or monitoring
    • 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
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/05—Speed

Definitions

  • the invention relates to a gear machine according to the preamble of patent claim 1.
  • a gear machine in the form of an external gear motor is shown. This has two meshing gears, which are mounted in a housing which is closed with a driven-side cover and a cover plate.
  • a leakage oil flow channel is integrated in the end cap having a leakage oil space open to a gear shaft.
  • a rotational speed sensor on the Hall effect base is integrated in the leakage oil chamber.
  • the sensor has a magnetic attraction force that attracts and holds ferromagnetic or magnetically attractable particles, such as metallic abrasion, in the leakage oil flow path. Accumulation of the particles on the RPM sensor may cause them to miss, which can lead to serious malfunctions in the machine.
  • the invention has for its object to provide a gear machine that is simple and ensures high reliability.
  • a gear machine has a housing for receiving two intermeshing toothed wheels.
  • the housing is each closed at the front side with a housing cover and a leakage oil flow path is provided for discharging leakage in the gear machine.
  • a protective magnet is arranged in the leakage oil flow path.
  • a Hall sensor for speed measurement of the gear machine is arranged in the Leckölströmungspfad, whereby the protective magnet ferromagnetic foreign matter from the leakage oil flow as far as possible before they get to the Hall sensor and then magnetically attracted by this, which could have a malfunction of the Hall sensor result.
  • the leakage oil flow path is integrated as leakage oil flow channel at least in a cover of the housing and each has a first and second leakage oil space open to an end face of a gear axis and an input / output shaft, wherein the leakage oil flow channel has a leak oil connection.
  • the Hall sensor may be disposed in the second leakage oil space open to the input / output shaft and the protective magnet in the first leakage oil space.
  • the protective magnet is integrated in a depression of the end cover and can be glued to the end cover.
  • the protective magnet is for example a simple disc magnet.
  • the protective magnet advantageously has a high attraction force on ferromagnetic foreign substances in the leakage oil flow, this has a higher magnetic effect than the Hall sensor.
  • the gear machine is an external gear motor.
  • Such a hydraulic external gear motor or gear motor 1 is known per se, which is why only the essential elements for understanding the invention are described and, moreover, referred to the above-mentioned data sheet RD 14 026 / 01.05 of the applicant.
  • the gear motor 1 has a housing 2 which is closed with a driven-side cover 4 and a cover 6. Through the output-side cover 4, an output shaft 8 is passed.
  • a Hall effect based on a magnetic Hall sensor or speed sensor 10 is integrated, which is known as the gear motor 1 per se from the prior art and shown in the data sheet RD 95 132 of the Applicant.
  • the speed sensor 10 detects the rotational speed of ferromagnetic gears, such as the rotational speed of the output shaft, in which it cooperates with a signal claw 11 on the output shaft 8.
  • a first formed on the output shaft 8 gear 12 is arranged, which is meshingly engaged with a second on a shaft 14 rotatably mounted gear 16.
  • the output shaft 8 and the axle 14 are each mounted in bearing bodies 18.
  • a leakage oil flow channel or leakage oil channel 20 is integrated, which has a first and second leakage oil space 26 and 28 open towards an axis end face 22 of the axis 14 and toward a shaft end face 24 of the output shaft 8.
  • the second leakage oil chamber protrudes dashed lines in Figure 2 indicated speed sensor 10 for measuring the output shaft speed. Leakage oil is removed from the second leakage oil chamber 28 by a leakage oil connection channel (not shown in FIG. 2).
  • the rotational speed sensor 10 has a permanent magnetic attraction force, which is why ferromagnetic contaminants in the leakage oil, such as metallic abrasion, mounting dust, etc., are deposited thereon and by the magnetic force of the rotational speed sensor 10 can be recorded.
  • the accumulation of foreign matter can lead to malfunction of the speed sensor 10.
  • a protective magnet 50 is integrated into the second leakage oil chamber 28, which attracts and holds the foreign matter with its magnetic force from the leakage oil, so that they can not deposit on the rotational speed sensor 10.
  • the second leakage oil chamber 28 has an approximately cylindrical inner surface 44. From this extends in the sectional plane outwardly a sensor receiving bore 46 for receiving the speed sensor 10.
  • the output shaft 8 protrudes with a square-shaped end portion which forms the signal claw 11 for speed measurement by the Speed sensor 10 into the second leakage oil chamber 28 inside, where the signal claw 11 is located in front of the speed sensor 10.
  • the signal claw 11 could for example also be designed as a toothing or as a shaft with grooves.
  • the first leakage oil space 26 is formed as a truncated pyramid-shaped depression in the end cap 6.
  • the protective magnet 50 disposed in the second leakage oil space 28 in front of the wear shaft 8 is, for example, a conventional disk magnet having a volume of 6 by 5 mm made of the material N45 nickel with a holding force of 1.8 kg. This can be pressed or glued into a depression introduced into the leakage oil space 28. Since the end cover 6 is a cast part, it would be useful in the press fit solution to make the recess machined to keep the tolerance.
  • the protective magnet 50 can certainly also be integrated elsewhere in the leakage oil space 28, for example by gluing to a wall surface of the second leakage oil space 28, whereby a change in geometry of the end cover 6, in particular the leakage oil space 28, would not be necessary.
  • Leakage oil flows, for example, with a volume flow between 0.3 and 1 liter / minute, mostly from the second leakage oil space 28 on the protective magnet 50 and over the leakage oil passage 20 to the leakage oil port 42.
  • This ferromagnetic foreign substances which are in the end of the output shaft 8 swirled leakage oil, substantially captured by the protective magnet 50 before these arrive at the magnetic speed sensor 10. Due to the arrangement of the protective magnet 50 and the distance to the rotational speed sensor 10, a functional influence of the rotational speed sensor 10 by the protective magnet 50 is substantially avoided.
  • the protective magnet 50 is a general cleaning of the leakage oil and thus the hydraulic oil allows in a hydraulic circuit, which, for example, drive elements of the gear machine 1 are loaded with less dirt particles or foreign matter.
  • a gear machine with a housing for receiving two intermeshing gears, which is each closed at the front end with a housing cover.
  • the gear machine has a leakage oil flow path for discharging leakage in which a protective magnet is disposed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • General Details Of Gearings (AREA)
EP20090012734 2008-10-27 2009-10-08 Machine à engrenage Withdrawn EP2180187A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200810053316 DE102008053316A1 (de) 2008-10-27 2008-10-27 Zahnradmaschine

Publications (1)

Publication Number Publication Date
EP2180187A2 true EP2180187A2 (fr) 2010-04-28

Family

ID=41611131

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20090012734 Withdrawn EP2180187A2 (fr) 2008-10-27 2009-10-08 Machine à engrenage

Country Status (2)

Country Link
EP (1) EP2180187A2 (fr)
DE (1) DE102008053316A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011134449A3 (fr) * 2010-04-30 2012-11-29 Schaeffler Technologies AG & Co. KG Dispositif de transport hydraulique et module de commande électrohydraulique
JP2019119270A (ja) * 2017-12-28 2019-07-22 株式会社アドヴィックス 液圧制御装置
EP3808981A1 (fr) * 2019-10-18 2021-04-21 BOMAG GmbH Pompe constante destinée à être utilisée pour transporter un liquide hydraulique dans un circuit hydraulique fermé, circuit hydraulique fermé, machine de construction ainsi que procédé de fonctionnement d'une pompe hydraulique constante dans un circuit fermé

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011134449A3 (fr) * 2010-04-30 2012-11-29 Schaeffler Technologies AG & Co. KG Dispositif de transport hydraulique et module de commande électrohydraulique
JP2019119270A (ja) * 2017-12-28 2019-07-22 株式会社アドヴィックス 液圧制御装置
EP3808981A1 (fr) * 2019-10-18 2021-04-21 BOMAG GmbH Pompe constante destinée à être utilisée pour transporter un liquide hydraulique dans un circuit hydraulique fermé, circuit hydraulique fermé, machine de construction ainsi que procédé de fonctionnement d'une pompe hydraulique constante dans un circuit fermé
US20210115921A1 (en) * 2019-10-18 2021-04-22 Bomag Gmbh Fixed Displacement Pump For Use For Conveying A Hydraulic Fluid In A Closed Hydraulic Circuit, Closed Hydraulic Circuit, Construction Machine And Method For Operating A Fixed Displacement Pump In A Closed Hydraulic Circuit

Also Published As

Publication number Publication date
DE102008053316A1 (de) 2010-04-29

Similar Documents

Publication Publication Date Title
DE4141958A1 (de) Drehzahlsensor, insbesondere zahnradsensor
DE102005035020A1 (de) Radialbewegliches Loslager für eine Welle eines Lenksystems
EP2180187A2 (fr) Machine à engrenage
DE10023695B4 (de) Verstellvorrichtung
DE10206543A1 (de) Getriebe sowie mit diesem Getriebe ausgestatteter Drehgeber
DE102006007256A1 (de) Drehwinkelerfassungsvorrichtung
DE102016124117A1 (de) Türkomponente mit einem steuerbaren Drehdämpfer
WO2008055686A1 (fr) Capteur et dispositif de vérification d'articles sous forme de feuilles et procédé de maintenance de capteur
DE3020725C2 (de) Vorrichtung zum Abdichten einer Bohrung eines unter Unterdruck stehenden Rotorgehäuses
DE102006023553A1 (de) Getriebe mit einer Drehzahlabgriffseinrichtung
AT400766B (de) Einrichtung zur volumenmessung strömender medien
DE102010041559A1 (de) Vorrichtung zur Filterung von Schmierstoffen in einem Getriebe
DE10201141B4 (de) Stellgetriebe mit Einrichtungen zur Feststellung der Abweichung von einer vorgegebenen Ausgangsstellung
DE1922624C3 (de) Schmiervorrichtung für ein Ausgleichsgetriebe
DE102014018262B4 (de) Gurtaufroller mit einem Signalgeberring
DE102005048527B4 (de) Lagerung einer Zahnradanordnung
DE10214418A1 (de) Volumenzähler zum Messen eines Flüssigkeitsvolumens
DE69501828T2 (de) Hahn mit konischem küken
EP2557325A2 (fr) Agencement de palier avec système de codage
DE69816527T2 (de) Vorrichtung zur Bestimmung der Parameter der Rotation einer Lenkwelle
DE102005052096B4 (de) Kompressor
DE719867C (de) Von der Filterfluessigkeit in Umlauf versetzter Antrieb der Spaltraeumereinrichtung von Spaltfitern
DE19707615B4 (de) Elektrostatische Abscheidevorrichtung für magnetische Partikel in der Schmierflüssigkeit eines Getriebes
DE4026692A1 (de) Durchflussmessvorrichtung
DE29511071U1 (de) Antriebseinheit eines Schlittens für Stanz-Biegemaschinen

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: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

AX Request for extension of the european patent

Extension state: AL BA RS

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

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20121124