DE1000654B - Bevel gear with adjustable bevel pinion bearings - Google Patents

Bevel gear with adjustable bevel pinion bearings

Info

Publication number
DE1000654B
DE1000654B DEF9141A DEF0009141A DE1000654B DE 1000654 B DE1000654 B DE 1000654B DE F9141 A DEF9141 A DE F9141A DE F0009141 A DEF0009141 A DE F0009141A DE 1000654 B DE1000654 B DE 1000654B
Authority
DE
Germany
Prior art keywords
bevel
adjustable
bevel gear
shaft
pinion
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.)
Pending
Application number
DEF9141A
Other languages
German (de)
Inventor
Erich Kresse
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.)
A Friedrich Flender AG
Original Assignee
A Friedrich Flender AG
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 A Friedrich Flender AG filed Critical A Friedrich Flender AG
Priority to DEF9141A priority Critical patent/DE1000654B/en
Publication of DE1000654B publication Critical patent/DE1000654B/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/54—Systems consisting of a plurality of bearings with rolling friction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
    • F16C23/06—Ball or roller bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/07—Fixing them on the shaft or housing with interposition of an element
    • F16C35/077—Fixing them on the shaft or housing with interposition of an element between housing and outer race ring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
    • F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
    • F16H1/12—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes
    • F16H1/14—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising conical gears only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2361/00—Apparatus or articles in engineering in general
    • F16C2361/61—Toothed gear systems, e.g. support of pinion shafts

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gears, Cams (AREA)
  • Gear Transmission (AREA)

Description

Kegelradgetriebe mit einstellbarer Kegelritzellagerung Kegelritzel bzw. Kegelräder, insbesondere solche mit Klingelnberg-Verzahnung, müssen bei der Triebwerksmontage wegen des unbedingt einzuhaltenden Zähneeingriffes sehr genau eingestellt werden.Bevel gear with adjustable bevel pinion bearing or bevel gears, especially those with Klingelnberg teeth, must be used in the Engine assembly very precise because of the tooth engagement that must be observed can be set.

Diese Einstellungen wurden bisher durch Beilagen von mehr oder weniger dünnen Blechen bzw. Scheiben oder auch durch den Gebrauch veränderlicher Zwischenlagen erreicht.These attitudes have so far been made by enclosures of more or less thin sheets or disks or through the use of variable intermediate layers achieved.

Eine derartige primitive Einstellung genügt jedoch in keiner Weise den neuzeitlicihen technischen und betrieblichen Anforderungen, da sie ungenau und unzuverlässig, dazu langwierig und kostsp:iel.ig ist.However, such a primitive attitude is in no way sufficient the modern technical and operational requirements, as they are imprecise and is unreliable, lengthy and costly.

Es ist bereits .ein Zahnräderg:etriebe bekanntgeworden, bei dem das Verstellen der Höhenlage der Zahnräder zueinander mittels einer exzentrisch verdreInbaren Lagerbüchse vorgenommen wird. Die Verlagerung der Ritzelwelle :erfolgt hierbei nicht in axialer Richtung, sondern parallel zur ursprünglichen Ritzelwe.ll.enlage. Der Nachteil bei dieser Anordnung wird darin geselhen, d-aß bei einem exzentrischen Verstellen der Höhenlage des Antriebsritzels gleichzeitig auch dessen Antriebswelle auf seine ganze Länge dementsprechend verlagert wird. Ferner muß durch mehrere voneinander unabhängige zusätzliche Arbeitsgänge, näinlicih d,urcJh eine axiale Verschiebung des Tellerrades, die in an sich bekannter Weise vorgenommen wird, der erforderliche »richtige« Abstand des Tellerrades vom Antrieb sritzel erst noch aufgefunden, eingestellt und mit Hilfe besonderer Feststellvorrichtungen so gesichert werden, daß die aufgefundene endgültige günstigste Stellung der exzentrischen Lagerbüchse bei Inbetriebnahme bzw. beim Laufe des Triebwerkes sich nicht unbeabsichtigt verändern kann.A gear transmission has already become known in which the Adjustment of the height of the gears to each other by means of an eccentrically rotatable Bearing bush is made. The displacement of the pinion shaft: does not take place here in the axial direction, but parallel to the original pinion position. Of the The disadvantage of this arrangement is that it is eccentric Adjusting the height of the drive pinion at the same time as its drive shaft is shifted accordingly over its entire length. It must also be through several of each other independent additional work steps, finally an axial shift of the ring gear, which is made in a manner known per se, the required The »correct« distance between the crown wheel and the drive pinion has yet to be found and set and with the help of special locking devices are secured so that the found final, most favorable position of the eccentric bearing bush at start-up or cannot change unintentionally while the engine is running.

Nach einem anderen Vorschlag erfolgt das korrigierende Verstellen des Eingriffs des Antriebsritzels im Tellerrad zwar ebenfalls in axialer Richtung, die eigentliche Verstelleinri.dhtung, nämlich das in dein oberen Teil der Ritzel-,velle angeordnete Schrauibglied, befindet sich aber hierbei innenhalb einer Hohl-,velle.Corrective adjustment takes place according to another suggestion the engagement of the drive pinion in the ring gear is also in the axial direction, the actual adjustment device, namely the one in the upper part of the pinion shaft arranged screw member, but is located inside a hollow shaft.

Derartige Verstelleiinrichtungen sind jedoch nur für solche Triebwerke anwendbar, bei denen Hohlwellen vorhanden sind. Ferner können solche Einrichtungen bei Anwendung in Triebwerken mit einer längeren Ritzelwelle infolge der Unübersichtlichkeit der Anlage nicht mühelos von einem Bedienungsmann allein eingestellt werden.Such adjustment devices are only for such engines applicable where hollow shafts are present. Furthermore, such facilities when used in engines with a longer pinion shaft due to the confusion the system cannot be easily adjusted by one operator alone.

Der Gegenstand der Erfindung ist nun, ein Kegelradgetriebe mit einer mittels Schrauben einstellbaren Kegelritzellageru-ng zu schaffen, bei demdiegenannten Mißstände nicht auftreten können.The object of the invention is now to provide a bevel gear with a to create an adjustable bevel pinion bearing with screws Grievances cannot arise.

Die Erfindung selbst ist durch die Zeichnung im Längsschnitt wiedergegeben; hierbei ist ein Kegelradtrieb dargestellt, dessen Antriebsritzel in einer - bezüglich des Zahneingriffs in das Kegelrad auf der Antriebswelle - genau einstellbaren Lagerbüchse angeordnet ist.The invention itself is represented by the drawing in longitudinal section; Here, a bevel gear is shown, the drive pinion in a - with respect to the meshing of the teeth in the bevel gear on the drive shaft - precisely adjustable bearing bush is arranged.

Der Aufbau des Lagersystems und die Wirkungsweise seien im folgenden erklärt.The structure of the storage system and the mode of operation are as follows explained.

In einem beliebig a:usgeführten und aus einem beliebigen Werkstoff hergestellten Getriebegehäuse i befindet sich eine in der üblichen Weise und mittels Wälzlagern 7 gelagerte Getriebewelle 6, auf der das Kegelrad 8 mittels einer Paßfeder und einer Ringmutter starr angeordnet ist.In any design and made of any material manufactured gear housing i is a in the usual way and means Rolling bearings 7 mounted gear shaft 6, on which the bevel gear 8 by means of a feather key and a ring nut is rigidly arranged.

In die Verzahnung dieses Kegelrades 8 greift ein Kegelritzel .4 ein, "velches sich auf der Antriebswelle 3 befindet. Dieses ist mittels der Wälzlager 2 innerhalb einer einstellbaren Lagerbüchse 5 gelagert und durch Sicherungsring und Ringmutter gegen axiales Verschieben gesichert. Die Lagerbüchse 5 ist durch einen Lagerdeckel gegen Eindringen von Feuchtigkeit und Verunreinigungen von außen geschützt und mitsamt der darin eingebauten Antriebswelle 3 und dem übrigen Zubehör axial verschiebbar -in der Bohrung innerhalb des Gebäutsea.ns.atzes eingepaßt und kann mit Hilfe der abwechselnd und in mehrfacher Anordnung auf einem gemeinsamen Teilkreis auf dem Bund 9 der Lagerbüchse 5 untergebrachten Anzugsschrauben io bzw. Ahdrucksschraube,n ii in die erforderliche Stellung gebracht werden.A bevel pinion .4 engages in the toothing of this bevel gear 8, "velches is located on the drive shaft 3. This is by means of the roller bearings 2 stored within an adjustable bearing bush 5 and by locking ring and ring nut secured against axial displacement. The bearing bush 5 is through a bearing cover against the ingress of moisture and contamination from the outside protected and together with the drive shaft 3 built into it and the other accessories axially displaceable - fitted and in the bore within the building set can use the alternating and multiple arrangement on a common Pitch circle on the collar 9 of the bearing bush 5 housed tightening screws OK or Pressure screw, n ii can be brought into the required position.

Nach genauer Einstellung in die erforderliche Höhe wird ein unverrückbares Festsitzen der Lagerbüchse 5 durch gleichmäßiges Festziehen der Anzugsschrauben io erreicht, wodurch gleichzeitig sowohl diese selbst als auch die Druckschrauben i i unter zusätzlichen Druck gesetzt werden und dadurch die Lagerbüchse 5 gegen ein unbeabsichtigtes und durch Erschütterungen oder Schwingungen hervorgerufenes Verstellen schützen. Eine zwsätzli.che Sicherung der Druckschrauben selbst könnte gegebenenfalls ferner durch Verwendung von Gegenmuttern erreicht werden.After a precise adjustment to the required height, it becomes an immovable one Fixing of the bearing bush 5 by evenly tightening the tightening screws io achieved, whereby both these themselves and the pressure screws i i are put under additional pressure and thereby the bearing bush 5 against an unintentional one caused by shocks or vibrations Protect adjusting. An additional securing of the pressure screws itself could possibly also be achieved by using lock nuts.

Claims (2)

PATENTANSPRÜCHE: i. Kegelra getriebe mit einstellbarer Kegelritzel bzw. Kegelradlagerung mit jeweils auf Vollwellen befestigten Kegelrädern, dadurch gekennzeichnet, daB durch gemeinsames Einwirken von Anzugs- (io) und Abdrückschrauben (ii) ein axiales Verstellen der einen Welle (3) senkrecht oder in einem Winkel zur anderen Welle (6) in beiden Richtungen und nach der Verstellung ein gesichertes Festlegen der verstellbaren Welle erreichbar ist. PATENT CLAIMS: i. Bevel gear with adjustable bevel pinion or bevel gear bearings with bevel gears each fastened to solid shafts, thereby characterized by the joint action of tightening (io) and jacking screws (ii) an axial adjustment of one shaft (3) perpendicular to or at an angle to other shaft (6) in both directions and a secured one after the adjustment Setting the adjustable shaft is achievable. 2. Kcgelradgetriebe mit einstellbarer Kegelritzellagerung nach Anspruch i, dadurch gekennzeichnet, daB die axiale Verstellung über eine innerhalb einer Bohrung des Gehäuses (i) eingeführte Lagerbüchse (5) auf die Welle (3) bzw. das an dieser anbrachte Kegelrad (4) erfolgt. 1o In Betracht gezogene Druckschriften: Deutsche Patentsthriften Nr. 650 75.a., 5o9 567> 642 405, 325 433, 708 935 britische Patentschrift Nr. 481 009; Katalog Fa. Kugelfischer, »Bewährte Wälzlage-15 rungen«, Zeichng. Nr. 50q.-750$$.2. Kcgelradantrieb with adjustable bevel pinion bearing according to claim i, characterized in that the axial adjustment takes place via a bearing bush (5) introduced within a bore of the housing (i) on the shaft (3) or the bevel gear (4) attached to it. 1o Considered publications: Deutsche Patentsthriften No. 650 75.a., 5o9 567> 642 405, 325 433, 708 935 British Patent No. 481 009; Kugelfischer catalog, "Proven roller bearings", drawing. No. 50q.-750 $$.
DEF9141A 1952-05-26 1952-05-26 Bevel gear with adjustable bevel pinion bearings Pending DE1000654B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF9141A DE1000654B (en) 1952-05-26 1952-05-26 Bevel gear with adjustable bevel pinion bearings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF9141A DE1000654B (en) 1952-05-26 1952-05-26 Bevel gear with adjustable bevel pinion bearings

Publications (1)

Publication Number Publication Date
DE1000654B true DE1000654B (en) 1957-01-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
DEF9141A Pending DE1000654B (en) 1952-05-26 1952-05-26 Bevel gear with adjustable bevel pinion bearings

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DE (1) DE1000654B (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1110490B (en) * 1959-10-28 1961-07-06 Deutsche Edelstahlwerke Ag Process for roll cladding titanium or titanium alloys on steel
DE1210024B (en) * 1958-07-07 1966-02-03 Getriebe G M B H Deutsche Gearboxes for vehicles, especially rail vehicles
FR2372990A1 (en) * 1976-12-01 1978-06-30 Skf Nova Ab DEVICE FOR THE AXIAL ADJUSTMENT OF A ROTARY BODY, FOR EXAMPLE A PINION
FR2372989A1 (en) * 1976-12-01 1978-06-30 Skf Nova Ab BEARING ALLOWS THE AXIAL ADJUSTMENT OF THE ELEMENT IT SUPPORTS
DE2726080A1 (en) * 1977-06-10 1978-12-21 Skf Kugellagerfabriken Gmbh ARRANGEMENT FOR THE AXIAL MOVEMENT OF A ROLLER BEARING
DE2933537A1 (en) * 1979-08-18 1981-03-26 Klöckner-Humboldt-Deutz AG, 51063 Köln Protruding right angle bevel gear shafts - are installed so as to produce perpendicular setting gaps for gear spacing
DE3522600A1 (en) * 1985-06-25 1987-01-08 Bayerische Motoren Werke Ag Method for setting the backlash of the bevel gear set of a final drive unit
DE3734462A1 (en) * 1987-10-12 1989-04-20 Wilhelm Vogel Gmbh Gear mechanism, particularly a spur-wheel planetary mechanism
DE3741634A1 (en) * 1987-12-09 1989-06-22 Wittenstein Manfred LOW-PLAYING SLOW TRANSLATING TWO-STAGE PLANETARY GEARBOX
DE10234331A1 (en) * 2002-07-26 2004-02-12 Inkoma Maschinenbau Gmbh Bevel gear transmission has fastening component constructed separately from bearing housing and fastened on gearcase and with female thread for assembly with male thread on bearing housing
DE10331348A1 (en) * 2003-07-11 2004-06-03 Daimlerchrysler Ag Double taper roller bearing for bevel pinion meshing with crown wheel has narrow ends of rollers facing each other and races of two parts of bearing are of different diameters
DE102007008658A1 (en) 2007-02-20 2008-08-21 Flender Industriegetriebe Gmbh & Co. Kg Bevel gear units, in particular bevel helical gear units
DE202012009415U1 (en) 2011-09-29 2012-11-09 Siemens Aktiengesellschaft industrial gear

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE325433C (en) * 1918-09-29 1920-09-16 Ferdinand Lantz Thrust and support bearings
DE509567C (en) * 1930-10-09 Adolf Bleichert & Co A G Drive device for the drive wheel of a two- or three-wheeled motor vehicle by means of a shaft and bevel gear
DE642405C (en) * 1935-03-28 1937-03-03 Auto Union A G Device for the axial adjustment of the drive pinion of differential gears in motor vehicles
DE650754C (en) * 1937-09-30 Hurth Masch Zahnrad Carl Gear drive with eccentric, rotatable bearing bush
GB481009A (en) * 1937-06-12 1938-03-03 Morris Commercial Cars Ltd Improvements relating to the frames and wheel axles of motor and other vehicles
DE708935C (en) * 1938-07-10 1941-08-01 G & J Jaeger G M B H Axial support for rotating body

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE509567C (en) * 1930-10-09 Adolf Bleichert & Co A G Drive device for the drive wheel of a two- or three-wheeled motor vehicle by means of a shaft and bevel gear
DE650754C (en) * 1937-09-30 Hurth Masch Zahnrad Carl Gear drive with eccentric, rotatable bearing bush
DE325433C (en) * 1918-09-29 1920-09-16 Ferdinand Lantz Thrust and support bearings
DE642405C (en) * 1935-03-28 1937-03-03 Auto Union A G Device for the axial adjustment of the drive pinion of differential gears in motor vehicles
GB481009A (en) * 1937-06-12 1938-03-03 Morris Commercial Cars Ltd Improvements relating to the frames and wheel axles of motor and other vehicles
DE708935C (en) * 1938-07-10 1941-08-01 G & J Jaeger G M B H Axial support for rotating body

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1210024B (en) * 1958-07-07 1966-02-03 Getriebe G M B H Deutsche Gearboxes for vehicles, especially rail vehicles
DE1110490B (en) * 1959-10-28 1961-07-06 Deutsche Edelstahlwerke Ag Process for roll cladding titanium or titanium alloys on steel
FR2372990A1 (en) * 1976-12-01 1978-06-30 Skf Nova Ab DEVICE FOR THE AXIAL ADJUSTMENT OF A ROTARY BODY, FOR EXAMPLE A PINION
FR2372989A1 (en) * 1976-12-01 1978-06-30 Skf Nova Ab BEARING ALLOWS THE AXIAL ADJUSTMENT OF THE ELEMENT IT SUPPORTS
DE2726080A1 (en) * 1977-06-10 1978-12-21 Skf Kugellagerfabriken Gmbh ARRANGEMENT FOR THE AXIAL MOVEMENT OF A ROLLER BEARING
DE2933537A1 (en) * 1979-08-18 1981-03-26 Klöckner-Humboldt-Deutz AG, 51063 Köln Protruding right angle bevel gear shafts - are installed so as to produce perpendicular setting gaps for gear spacing
DE3522600A1 (en) * 1985-06-25 1987-01-08 Bayerische Motoren Werke Ag Method for setting the backlash of the bevel gear set of a final drive unit
DE3734462A1 (en) * 1987-10-12 1989-04-20 Wilhelm Vogel Gmbh Gear mechanism, particularly a spur-wheel planetary mechanism
DE3741634A1 (en) * 1987-12-09 1989-06-22 Wittenstein Manfred LOW-PLAYING SLOW TRANSLATING TWO-STAGE PLANETARY GEARBOX
DE10234331B4 (en) * 2002-07-26 2005-10-20 Inkoma Maschb Gmbh bevel gear
DE10234331A1 (en) * 2002-07-26 2004-02-12 Inkoma Maschinenbau Gmbh Bevel gear transmission has fastening component constructed separately from bearing housing and fastened on gearcase and with female thread for assembly with male thread on bearing housing
DE10331348A1 (en) * 2003-07-11 2004-06-03 Daimlerchrysler Ag Double taper roller bearing for bevel pinion meshing with crown wheel has narrow ends of rollers facing each other and races of two parts of bearing are of different diameters
DE10331348B4 (en) * 2003-07-11 2010-04-15 Daimler Ag storage unit
DE102007008658A1 (en) 2007-02-20 2008-08-21 Flender Industriegetriebe Gmbh & Co. Kg Bevel gear units, in particular bevel helical gear units
EP1961993A1 (en) 2007-02-20 2008-08-27 Flender Industriegetriebe GmbH Bevel gear, in particular bevel spur gear
US7827878B2 (en) 2007-02-20 2010-11-09 Flender Industriegetriebe Gmbh Bevel gear mechanism, especially bevel spur-gear mechanism
CN101251182B (en) * 2007-02-20 2012-06-13 弗兰德传动工业有限公司 Bevel gear mechanism, especially bevel spur-gear mechanism
DE202012009415U1 (en) 2011-09-29 2012-11-09 Siemens Aktiengesellschaft industrial gear
EP2574824A1 (en) 2011-09-29 2013-04-03 Siemens Aktiengesellschaft Industrial transmission
WO2013045625A1 (en) 2011-09-29 2013-04-04 Siemens Aktiengesellschaft Industrial gearing
US9157508B2 (en) 2011-09-29 2015-10-13 Siemens Aktiengesellschaft Industrial gear mechanism

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