EP2511010A1 - Vertical mill gear - Google Patents

Vertical mill gear Download PDF

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Publication number
EP2511010A1
EP2511010A1 EP11177670A EP11177670A EP2511010A1 EP 2511010 A1 EP2511010 A1 EP 2511010A1 EP 11177670 A EP11177670 A EP 11177670A EP 11177670 A EP11177670 A EP 11177670A EP 2511010 A1 EP2511010 A1 EP 2511010A1
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EP
European Patent Office
Prior art keywords
gear
housing
planet carrier
vertical mill
output flange
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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
EP11177670A
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German (de)
French (fr)
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EP2511010B1 (en
Inventor
Steffen Brun
Ingrid Klein
Georg Rewers
Jan-Dirk Schild
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Siemens AG
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Siemens AG
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Priority to CN201220155347XU priority Critical patent/CN202833872U/en
Publication of EP2511010A1 publication Critical patent/EP2511010A1/en
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Publication of EP2511010B1 publication Critical patent/EP2511010B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B02C15/006—Ring or disc drive gear arrangement

Definitions

  • the present invention relates to a vertical mill gear.
  • Vertical mills are known in the art in various embodiments. They serve for the comminution of different materials, such as minerals, limestone, brown and hard coal, cement raw material or the like. They usually comprise a rotating horizontal grinding table, on which the grinders received in a grinding bowl are pressed, and a vertical mill gear arranged below the grinding plate. The main tasks of the vertical mill gearbox are the power transmission, the translation of the required torque and the required speed, the storage of the grinding bowl and the recording of grinding forces.
  • FIG. 2 shows in cross-section the schematic structure of a known vertical mill gear 100.
  • the vertical mill gear 100 includes a housing 102 to which a connectable to a motor drive shaft 104 and a manufactured from ENGDS 600 output flange 106 are mounted on which the mill plate not shown is mounted.
  • the drive shaft 104 which has a horizontal axis of rotation and is mounted on roller bearings 108 and 110 in the housing 102 projects from the housing 102 and can be connected by means of a coupling not shown via a keyway 112 with a motor shaft, not shown.
  • a bevel pinion 114 is formed on one side, which is provided with a bevel gear 118 held on a vertically extending intermediate shaft 116 combs.
  • the over roller bearings 122 and 124 on a housing portion 126 and the housing 102 itself rotatably supported intermediate shaft 116 is releasably and rotationally fixed but adjustably connected to a Clarradwelle 127 via a coupling sleeve 120, at the upper free end of a sun gear 128 is formed integrally with planetary gears 132 mounted on a planet carrier 130 mesh.
  • the planet gears 132 are each rotatably supported by a rolling bearing 136 on a Planetenradachse 134 which is received on the planet carrier 130 made of EN GJS 700.
  • the planetary gears 132 are further engaged with a rotationally fixed to the housing 102, having an internal gear ring gear 138 is engaged.
  • the planet carrier 130 is driven in rotation via the sun gear 128.
  • the upper portion of the planet carrier 130 is formed as a solid shaft and radially mounted on a roller bearing 140 on a housing holding portion 142 of the housing 102.
  • the upper free end of the planet carrier 130 forms a conical seat 143, via which the planetary carrier 130 is fixedly connected to the output flange 106.
  • Another connection between the planet carrier 130 and the output flange 106 is achieved via an internally toothed coupling ring 144, which is screwed and pinned to an external toothing of the planet carrier 130 in engagement and with the output flange 106.
  • the torque is thus transmitted via the conical seat 143 on the one hand and via the coupling ring 144 on the other hand from the planet carrier 130 to the output flange 106.
  • the output flange 106 is axially mounted on the housing holding portion 142 via plain bearings 146.
  • the central passage opening 148 of the output flange 106 is closed from above with a cover 150. This in FIG. 2 shown vertical mill gear is characterized by a very robust design.
  • the present invention provides a vertical mill gear with a housing having a releasably secured and substantially annular housing housing portion; a sun gear, which is provided on a housing mounted on the, driven by a motor sun gear shaft; a planetary carrier rotatably mounted on the housing holding portion, on which at least one planetary gear is rotatably supported, wherein the planet gear is in engagement with the sun gear; a rotatably held on the housing, having an internal gear ring gear, with which the at least one planet gear is engaged, and a rotatably connected to the planet carrier and mounted on the housing output flange.
  • the planet carrier is mounted on the housing via a radial slide bearing. Due to the fact that according to the invention the torque transmission between the planet carrier and the output flange via a screw-pin connection, It is advantageous to choose the pitch circle diameter along which the screws and pins are arranged to produce the screw-pin connection as large as possible. However, a large pitch circle diameter is disadvantageous in that much space is required in the radial direction. By arranging a sliding bearing instead of a rolling bearing for supporting the planet carrier on the housing corresponding space is saved, whereby the caused by the screw-pin connection additional space requirements in the radial direction is at least partially compensated.
  • a sliding bearing is preferably provided, whereby a simple construction is achieved.
  • the planet carrier and the output flange have mutually aligned through openings, wherein at least one cover is provided for closing the passage opening of the planet carrier.
  • the planet carrier is designed in the manner of a hollow shaft.
  • the passage openings of the planet carrier and the output flange have an opening cross-section which is dimensioned such that at least the sun gear can be removed therefrom. Accordingly, the sun gear in a simple manner removed and repaired or renewed and the coupling element to be inspected, without the need for costly disassembly work on the gearbox are required.
  • the sun gear is releasably connected via a coupling element and rotatably but adjustably connected to an intermediate shaft, in particular via a coupling sleeve.
  • the sun gear receives the required Speilt.
  • the disassembly of the sun gear is facilitated.
  • the housing holding portion is provided with oil return holes, whereby a proper lubrication and cooling is ensured.
  • the planet carrier is provided with lubricant bores for supplying the Planetenradlagerung, resulting in a structurally simple and direct cooling and lubrication of Planetenradlagerung.
  • the output flange is advantageously made of EN GJS 500.
  • the planet carrier is advantageously made of EN GJS 600.
  • FIG. 1 shows in cross section the schematic structure of a vertical mill gear 10 according to an embodiment of the present invention.
  • the vertical mill gear 10 comprises a housing 12, on which a drive shaft 14 which can be connected to a motor is mounted.
  • the drive shaft 14, which has a horizontal axis of rotation and is mounted on rolling bearings 16 and 18 in the housing 12, protrudes from the housing 12 and can be connected by means of a coupling not shown via a keyway 20 with a motor shaft also not shown.
  • a bevel pinion 22 is integrally formed, which meshes with a bevel gear 26 held on a vertically extending intermediate shaft 24.
  • the intermediate shaft 24 is rotatably supported by rolling bearings 30 and 32 on a housing portion 12a and on the housing 12 itself. Furthermore, the intermediate shaft 24 via a coupling sleeve 28 releasably and rotatably but adjustably connected to a sun gear 33. On the sun gear 33, a sun gear 34 is integrally formed, which meshes with mounted on a planetary carrier 36 planetary gears 38.
  • the planet gears 38 are each rotatably supported by a rolling bearing 42 on a Planetenradachse 40, which is received on the planet carrier 36 manufactured from EN GJS 600.
  • the planet gears 38 are further connected to a rotatably held on the housing 12, an internal gear having ring gear 44 in engagement. This results in that the planet carrier 36 is driven in rotation via the sun gear 34.
  • the upper portion of the planet carrier 36 is formed as a hollow shaft and mounted on a slide bearing 46 on a housing holding portion 12 b of the housing 12.
  • the upper free end of the planetary carrier 36 is fixedly connected to an output flange 50 made of EN GJS 500, which carries the grinding plate, not shown.
  • the output flange 50 is mounted axially on plain bearings 56 on the housing holding portion 12b.
  • the central passage opening 60 of the output flange 50 and the central passage opening 58 of the planet carrier 36 are each closed with an externally accessible cover 62 and 64, respectively.
  • the cross-sectional areas of the through openings 58 and 60 are dimensioned such that the sun gear 34 can be removed by this.
  • the housing holding portion 12b is provided with oil return holes 66, and in the planet carrier 36 lubricant holes 68 are formed to supply the rolling bearings 42 of the planet gears 38 with lubricant.
  • FIG. 1 shown vertical mill gear 10 is characterized on the one hand by its structurally simple, inexpensive, easy to install and easy to maintain construction. Due to the fact that a screw-pin connection is used for torque transmission between the planetary carrier 36 and the output flange 50, only a small number of components is required. Furthermore, the planetary carrier 36 and the output flange 50 can be produced easily and inexpensively. The material requirements of these components are low, thanks to the screw-pin connection, so that inexpensive materials can be used.
  • the planet carrier 36 can be formed as a hollow shaft in contrast to the known construction described above with conical seat. Accordingly, the planet carrier 36 is easy to pour. Further, thanks to the hollow shaft, it is possible to inspect and possibly remove the sun gear 34 without having to disassemble the output flange 50, the housing retaining portion 12b and the planet carrier 36 for this purpose. That's enough Removing the lid 62 and 64, whereby maintenance and repair work is easy and convenient to carry out. In addition, no special tool is required, such as a Maximator for releasing a conical seat.
  • the vertical mill gear 10 has a simple and very effective oil supply.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Retarders (AREA)
  • Crushing And Grinding (AREA)

Abstract

The gear (10) has an EN GJS 600 type planetary carrier (36) rotatably mounted on a housing holding section (12b). A planetary wheel (38) is rotatably mounted on the planetary carrier and in engagement with a sun gear (34). A hollow wheel (44) is rotatably mounted on a housing (12) and provided with internal teeth and the planetary wheel is in engagement with the hollow wheel. An EN GJS 500 type drive flange (50) mounted on the housing, where the drive flange and planetary carrier are directly fastened to each other by screw-pin connectors (52, 54).

Description

Die vorliegende Erfindung betrifft ein Vertikalmühlengetriebe.The present invention relates to a vertical mill gear.

Vertikalmühlen sind im Stand der Technik in verschiedenen Ausgestaltungen bekannt. Sie dienen zur Zerkleinerung unterschiedlicher Materialien, wie beispielsweise Mineralien, Kalkstein, Braun- und Steinkohle, Zementrohmaterial oder dergleichen. Sie umfassen normalerweise einen rotierenden horizontalen Mahlteller, auf den die in einer Mahlschüssel aufgenommenen Mahlwerkzeuge angepresst werden, und ein unterhalb des Mahltellers angeordnetes Vertikalmühlengetriebe. Die Hauptaufgaben des Vertikalmühlengetriebes bestehen in der Leistungsübertragung, der Übersetzung des erforderlichen Drehmomentes und der erforderlichen Drehzahl, der Lagerung der Mahlschüssel und der Aufnahme der Mahlkräfte.Vertical mills are known in the art in various embodiments. They serve for the comminution of different materials, such as minerals, limestone, brown and hard coal, cement raw material or the like. They usually comprise a rotating horizontal grinding table, on which the grinders received in a grinding bowl are pressed, and a vertical mill gear arranged below the grinding plate. The main tasks of the vertical mill gearbox are the power transmission, the translation of the required torque and the required speed, the storage of the grinding bowl and the recording of grinding forces.

Figur 2 zeigt im Querschnitt den schematischen Aufbau eines bekannten Vertikalmühlengetriebes 100. Das Vertikalmühlengetriebe 100 umfasst ein Gehäuse 102, an dem eine mit einem Motor verbindbare Antriebswelle 104 und ein aus ENGdS 600 gefertigter Abtriebsflansch 106 gelagert sind, auf dem der nicht näher dargestellte Mühlenteller montiert ist. Die Antriebswelle 104, die eine horizontale Drehachse aufweist und über Wälzlager 108 und 110 im Gehäuse 102 gelagert ist, steht aus dem Gehäuse 102 vor und kann mittels einer nicht näher dargestellten Kupplung über eine Passfederverbindung 112 mit einer nicht näher dargestellten Motorwelle verbunden werden. An dem anderen freien Ende der Antriebswelle 104 ist einseitig ein Kegelritzel 114 ausgebildet, das mit einem an einer sich vertikal erstreckenden Zwischenwelle 116 gehaltenen Kegelrad 118 kämmt. Die über Walzlager 122 und 124 an einem Gehäuseabschnitt 126 bzw. am Gehäuse 102 selbst drehbar gehaltene Zwischenwelle 116 ist über eine Kupplungshülse 120 lösbar und drehfest aber einstellbeweglich mit einer Sonnenradwelle 127 verbunden, an deren oberen freien Ende einteilig ein Sonnenrad 128 ausgebildet ist, das mit an einem Planetenträger 130 montierten Planetenrädern 132 kämmt. Die Planetenräder 132 sind jeweils über ein Wälzlager 136 drehbar an einer Planetenradachse 134 gehalten, die an dem aus EN GJS 700 hergestellten Planetenträger 130 aufgenommen ist. Die Planetenräder 132 sind ferner mit einem drehfest an dem Gehäuse 102 gehaltenen, eine Innenverzahnung aufweisenden Hohlrad 138 im Eingriff. Dies führt dazu, dass der Planetenträger 130 über das Sonnenrad 128 drehend angetrieben wird. Der obere Abschnitt des Planetenträgers 130 ist als Vollwelle ausgebildet und über ein Wälzlager 140 an einem Gehäusehalteabschnitt 142 des Gehäuses 102 radial gelagert. Das obere freie Ende des Planetenträgers 130 bildet einen Kegelsitz 143, über den der Planetenträger 130 mit dem Abtriebsflansch 106 fest verbunden ist. Eine weitere Verbindung zwischen dem Planetenträger 130 und dem Abtriebsflansch 106 wird über einen innen verzahnten Kupplungsring 144 erzielt, der mit einer Außenverzahnung des Planetenträgers 130 im Eingriff und mit dem Abtriebsflansch 106 verschraubt und verstiftet ist. Das Drehmoment wird also über den Kegelsitz 143 einerseits und über den Kupplungsring 144 andererseits von dem Planetenträger 130 auf den Abtriebsflansch 106 übertragen. Der Abtriebsflansch 106 ist über Gleitlager 146 axial an dem Gehäusehalteabschnitt 142 gelagert. Die mittige Durchgangsöffnung 148 des Abtriebsflansches 106, ist von oben mit einem Deckel 150 verschlossen. Das in Figur 2 dargestellte Vertikalmühlengetriebe zeichnet sich durch einen sehr robusten Aufbau aus. FIG. 2 shows in cross-section the schematic structure of a known vertical mill gear 100. The vertical mill gear 100 includes a housing 102 to which a connectable to a motor drive shaft 104 and a manufactured from ENGDS 600 output flange 106 are mounted on which the mill plate not shown is mounted. The drive shaft 104, which has a horizontal axis of rotation and is mounted on roller bearings 108 and 110 in the housing 102 projects from the housing 102 and can be connected by means of a coupling not shown via a keyway 112 with a motor shaft, not shown. At the other free end of the drive shaft 104, a bevel pinion 114 is formed on one side, which is provided with a bevel gear 118 held on a vertically extending intermediate shaft 116 combs. The over roller bearings 122 and 124 on a housing portion 126 and the housing 102 itself rotatably supported intermediate shaft 116 is releasably and rotationally fixed but adjustably connected to a Sonnenradwelle 127 via a coupling sleeve 120, at the upper free end of a sun gear 128 is formed integrally with planetary gears 132 mounted on a planet carrier 130 mesh. The planet gears 132 are each rotatably supported by a rolling bearing 136 on a Planetenradachse 134 which is received on the planet carrier 130 made of EN GJS 700. The planetary gears 132 are further engaged with a rotationally fixed to the housing 102, having an internal gear ring gear 138 is engaged. This results in that the planet carrier 130 is driven in rotation via the sun gear 128. The upper portion of the planet carrier 130 is formed as a solid shaft and radially mounted on a roller bearing 140 on a housing holding portion 142 of the housing 102. The upper free end of the planet carrier 130 forms a conical seat 143, via which the planetary carrier 130 is fixedly connected to the output flange 106. Another connection between the planet carrier 130 and the output flange 106 is achieved via an internally toothed coupling ring 144, which is screwed and pinned to an external toothing of the planet carrier 130 in engagement and with the output flange 106. The torque is thus transmitted via the conical seat 143 on the one hand and via the coupling ring 144 on the other hand from the planet carrier 130 to the output flange 106. The output flange 106 is axially mounted on the housing holding portion 142 via plain bearings 146. The central passage opening 148 of the output flange 106 is closed from above with a cover 150. This in FIG. 2 shown vertical mill gear is characterized by a very robust design.

Ausgehend von diesem Stand der Technik ist es eine Aufgabe der vorliegenden Erfindung, ein Vertikalmühlengetriebe der eingangs genannten Art mit optimiertem Aufbau zu schaffen, das sich insbesondere einfach fertigen und leicht montieren und warten lässt.Starting from this prior art, it is an object of the present invention to provide a vertical mill gear of the type mentioned above with optimized design, especially easy to manufacture and easy to assemble and maintain.

Zur Lösung dieser Aufgabe schafft die vorliegende Erfindung ein Vertikalmühlengetriebe mit einem Gehäuse, das einen lösbar befestigten und im Wesentlichen ringförmig ausgebildeten Gehäusehalteabschnitt aufweist; einem Sonnenrad, das an einer am Gehäuse gelagerten, über einen Motor antreibbaren Sonnenradwelle vorgesehen ist; einem drehbar an dem Gehäusehalteabschnitt gelagerten Planetenträger, an dem zumindest ein Planetenrad drehbar gehalten ist, wobei das Planetenrad mit dem Sonnenrad in Eingriff ist; einem drehfest an dem Gehäuse gehaltenen, eine Innenverzahnung aufweisenden Hohlrad, mit dem das zumindest eine Planetenrad in Eingriff ist, und einem drehfest mit dem Planetenträger verbundenen und an dem Gehäuse gelagerten Abtriebsflansch.To achieve this object, the present invention provides a vertical mill gear with a housing having a releasably secured and substantially annular housing housing portion; a sun gear, which is provided on a housing mounted on the, driven by a motor sun gear shaft; a planetary carrier rotatably mounted on the housing holding portion, on which at least one planetary gear is rotatably supported, wherein the planet gear is in engagement with the sun gear; a rotatably held on the housing, having an internal gear ring gear, with which the at least one planet gear is engaged, and a rotatably connected to the planet carrier and mounted on the housing output flange.

Mit anderen Worten wird die bekannte Drehmomentübertragung zwischen dem Planetenträger und dem Abtriebsflansch mittels Kegelsitz und Kupplungsring erfindungsgemäß durch eine Drehmomentübertragung mittels einer Schraub-Stift-Verbindung ersetzt. Diese konstruktive Änderung zieht mehrere Vorteile nach sich. Zum einen wird die Fertigung sowohl des Abtriebsflansches als auch des Planetenträgers erheblich vereinfacht, da der aufwendig herzustellende Kegelsitz entfällt. Auch die Ausbildung einer Kurzverzahnung am Planetenträger 130 zur Aufnahme des Kupplungsrings 144 entfällt, wodurch bei der Produktion Arbeitsgänge eingespart werden können. Darüber hinaus wird die Anzahl von Bauteilen reduziert, was zu einem einfachen und preiswerten Aufbau beiträgt, der sich leicht montieren lässt.In other words, the known torque transmission between the planetary carrier and the output flange is replaced by means of conical seat and coupling ring according to the invention by a torque transmission by means of a screw-pin connection. This structural change has several advantages. On the one hand, the production of both the output flange and the planet carrier is considerably simplified, since the cost-effectively manufactured conical seat is eliminated. The formation of a short toothing on the planet carrier 130 for receiving the coupling ring 144 is eliminated, which can be saved during production operations. In addition, the number of components is reduced, which contributes to a simple and inexpensive construction that is easy to assemble.

Gemäß einer Ausgestaltung der vorliegenden Erfindung ist der Planetenträger über ein radiales Gleitlager an dem Gehäuse gelagert. Aufgrund der Tatsache, dass erfindungsgemäß die Drehmomentübertragung zwischen dem Planetenträger und dem Abtriebsflansch über eine Schraub-Stift-Verbindung erfolgt, ist es vorteilhaft, den Lochkreisdurchmesser, entlang dem die Schrauben und Stifte zur Erzeugung der Schraub-Stift-Verbindung angeordnet sind, möglichst groß zu wählen. Ein großer Lochkreisdurchmesser ist allerdings dahingehend von Nachteil, dass in radialer Richtung viel Bauraum benötigt wird. Durch die Anordnung eines Gleitlagers anstelle eines Wälzlagers zur Lagerung des Planetenträgers am Gehäuse wird entsprechender Bauraum eingespart, wodurch der durch die Schraub-Stift-Verbindung verursachte zusätzliche Bauraumbedarf in radialer Richtung zumindest teilweise kompensiert wird.According to one embodiment of the present invention, the planet carrier is mounted on the housing via a radial slide bearing. Due to the fact that according to the invention the torque transmission between the planet carrier and the output flange via a screw-pin connection, It is advantageous to choose the pitch circle diameter along which the screws and pins are arranged to produce the screw-pin connection as large as possible. However, a large pitch circle diameter is disadvantageous in that much space is required in the radial direction. By arranging a sliding bearing instead of a rolling bearing for supporting the planet carrier on the housing corresponding space is saved, whereby the caused by the screw-pin connection additional space requirements in the radial direction is at least partially compensated.

Zwischen dem Abtriebsflansch und dem Gehäuse, insbesondere dem Gehäusehalteabschnitt, ist bevorzugt ein Gleitlager vorgesehen, wodurch ein einfacher Aufbau erzielt wird.Between the output flange and the housing, in particular the housing holding portion, a sliding bearing is preferably provided, whereby a simple construction is achieved.

Vorteilhaft weisen der Planetenträger und der Abtriebsflansch miteinander fluchtende Durchgangsöffnungen auf, wobei zumindest ein Deckel zum Verschließen der Durchgangsöffnung des Planetenträgers vorgesehen ist. Mit anderen Worten ist der Planetenträger nach Art einer Hohlwelle ausgebildet. Hierdurch wird zum einen der Vorteil erzielt, dass in Bezug auf den Planetenträger viel Material eingespart werden kann. Zum anderen kann dank der am Abtriebsflansch und am Planetenträger vorgesehenen Durchgangsöffnungen die Sonnenradanordnung nach Öffnen des Deckels inspiziert werden. Dies erlaubt eine sehr einfache Wartung, da hierzu der Abtriebsflansch, der Gehäusehalteabschnitt und der Planetenträger nicht wie bei der eingangs beschriebenen bekannten Konstruktion demontiert werden müssen. Darüber hinaus lässt sich der als Hohlwelle ausgebildete Planetenträger einfach gießen.Advantageously, the planet carrier and the output flange have mutually aligned through openings, wherein at least one cover is provided for closing the passage opening of the planet carrier. In other words, the planet carrier is designed in the manner of a hollow shaft. As a result, on the one hand, the advantage is achieved that with respect to the planet carrier a lot of material can be saved. On the other hand, thanks to the through-openings provided on the output flange and on the planet carrier, the sun gear arrangement can be inspected after the lid has been opened. This allows a very simple maintenance, since this the output flange, the housing holding portion and the planet carrier does not need to be dismantled as in the known structure described above. In addition, the trained as a hollow shaft planet carrier can be easily cast.

Vorteilhaft weisen die Durchgangsöffnungen des Planetenträgers und des Abtriebsflansches einen Öffnungsquerschnitt auf, der derart dimensioniert ist, dass zumindest das Sonnenrad durch diese entnehmbar ist. Entsprechend kann das Sonnenrad in einfacher Art und Weise ausgebaut und repariert bzw. erneuert sowie das Kupplungselement inspiziert werden, ohne dass hierfür aufwendige Demontagearbeiten am Getriebe erforderlich sind.Advantageously, the passage openings of the planet carrier and the output flange have an opening cross-section which is dimensioned such that at least the sun gear can be removed therefrom. Accordingly, the sun gear in a simple manner removed and repaired or renewed and the coupling element to be inspected, without the need for costly disassembly work on the gearbox are required.

Gemäß einer Ausgestaltung der vorliegenden Erfindung ist die Sonnenradwelle über ein Kupplungselement lösbar und drehfest aber einstellbeweglich mit einer Zwischenwelle verbunden, insbesondere über eine Kupplungshülse. Durch diese Anordnung erhält das Sonnenrad das erforderliche Speilt. Darüber hinaus wird die Demontage des Sonnenrads erleichtert.According to one embodiment of the present invention, the sun gear is releasably connected via a coupling element and rotatably but adjustably connected to an intermediate shaft, in particular via a coupling sleeve. By this arrangement, the sun gear receives the required Speilt. In addition, the disassembly of the sun gear is facilitated.

Vorteilhaft ist der Gehäusehalteabschnitt mit Ölrücklaufbohrungen versehen, wodurch eine ordnungsgemäße Schmierung und Kühlung sichergestellt wird.Advantageously, the housing holding portion is provided with oil return holes, whereby a proper lubrication and cooling is ensured.

Vorteilhaft ist der Planetenträger mit Schmiermittelbohrungen zur Versorgung der Planetenradlagerung versehen, was zu einer konstruktiv einfachen und direkten Kühlung und Schmierung der Planetenradlagerung führt.Advantageously, the planet carrier is provided with lubricant bores for supplying the Planetenradlagerung, resulting in a structurally simple and direct cooling and lubrication of Planetenradlagerung.

Vorteilhaft ist der Abtriebsflansch aus EN GJS 500 hergestellt.The output flange is advantageously made of EN GJS 500.

Der Planetenträger ist vorteilhaft aus EN GJS 600 hergestellt.The planet carrier is advantageously made of EN GJS 600.

Diese Materialien weisen eine gute Gießbarkeit auf und sind problemlos zu bearbeiten.These materials have good castability and are easy to work with.

Weitere Merkmale und Vorteile der vorliegenden Erfindung werden anhand der nachfolgenden Beschreibung eines Vertikalmühlengetriebes gemäß einer Ausführungsform der vorliegenden Erfindung unter Bezugnahme auf die beiliegende Zeichnung deutlich. Darin ist

  • Figur 1 eine schematische Querschnittansicht eines Vertikalmühlengetriebes gemäß einer Ausführungsform der vorliegenden Erfindung und
  • Figur 2 eine schematische Querschnittansicht eines bekannten Vertikalmühlengetriebes.
Further features and advantages of the present invention will become apparent from the following description of a vertical mill gear according to an embodiment of the present invention with reference to the accompanying drawings. That's it
  • FIG. 1 a schematic cross-sectional view of a Vertikalmühlengetriebes according to an embodiment of the present invention and
  • FIG. 2 a schematic cross-sectional view of a known Vertikalmühlengetriebes.

Figur 1 zeigt im Querschnitt den schematischen Aufbau eines Vertikalmühlengetriebes 10 gemäß einer Ausführungsform der vorliegenden Erfindung. Das Vertikalmühlengetriebe 10 umfasst ein Gehäuse 12, an dem eine mit einem Motor verbindbare Antriebswelle 14 gelagert ist. Die Antriebswelle 14, die eine horizontale Drehachse aufweist und über Wälzlager 16 und 18 im Gehäuse 12 gelagert ist, steht aus dem Gehäuse 12 vor und kann mittels einer nicht näher dargestellten Kupplung über eine Passfederverbindung 20 mit einer ebenfalls nicht näher dargestellten Motorwelle verbunden werden. An dem anderen freien Ende der Antriebswelle 14 ist einteilig ein Kegelritzel 22 ausgebildet, das mit einem an einer sich vertikal erstreckenden Zwischenwelle 24 gehaltenen Kegelrad 26 kämmt. Die Zwischenwelle 24 ist über Wälzlager 30 und 32 drehbar an einem Gehäuseabschnitt 12a und an dem Gehäuse 12 selbst gehalten. Ferner ist die Zwischenwelle 24 über eine Kupplungshülse 28 lösbar und drehfest aber einstellbeweglich mit einer Sonnenradwelle 33 verbunden. An der Sonnenradwelle 33 ist einteilig ein Sonnenrad 34 ausgebildet, das mit an einem Planetenträger 36 montierten Planetenrädern 38 kämmt. FIG. 1 shows in cross section the schematic structure of a vertical mill gear 10 according to an embodiment of the present invention. The vertical mill gear 10 comprises a housing 12, on which a drive shaft 14 which can be connected to a motor is mounted. The drive shaft 14, which has a horizontal axis of rotation and is mounted on rolling bearings 16 and 18 in the housing 12, protrudes from the housing 12 and can be connected by means of a coupling not shown via a keyway 20 with a motor shaft also not shown. At the other free end of the drive shaft 14, a bevel pinion 22 is integrally formed, which meshes with a bevel gear 26 held on a vertically extending intermediate shaft 24. The intermediate shaft 24 is rotatably supported by rolling bearings 30 and 32 on a housing portion 12a and on the housing 12 itself. Furthermore, the intermediate shaft 24 via a coupling sleeve 28 releasably and rotatably but adjustably connected to a sun gear 33. On the sun gear 33, a sun gear 34 is integrally formed, which meshes with mounted on a planetary carrier 36 planetary gears 38.

Die Planetenräder 38 sind jeweils über ein Wälzlager 42 drehbar an einer Planetenradachse 40 gehalten, die an dem aus EN GJS 600 hergestellten Planetenträger 36 aufgenommen ist. Die Planetenräder 38 sind ferner mit einem drehfest an dem Gehäuse 12 gehaltenen, eine Innenverzahnung aufweisenden Hohlrad 44 im Eingriff. Dies führt dazu, dass der Planetenträger 36 über das Sonnenrad 34 drehend angetrieben wird. Der obere Abschnitt des Planetenträgers 36 ist als Hohlwelle ausgebildet und über ein Gleitlager 46 an einem Gehäusehalteabschnitt 12b des Gehäuses 12 gelagert. Das obere freie Ende des Planetenträgers 36 ist mit einem aus EN GJS 500 gefertigten Abtriebsflansch 50 fest verbunden, der den nicht näher dargestellten Mahlteller trägt. Zur Drehmomentübertragung zwischen dem Planetenträger 36 und dem Abtriebsflansch 50 sind Schrauben 52 und Stifte 54 vorgesehen, die gemeinsam eine Schraub- Stift-Verbindung bilden. Der Abtriebsflansch 50 ist axial über Gleitlager 56 an dem Gehäusehalteabschnitt 12b gelagert. Die mittige Durchgangsöffnung 60 des Abtriebsflansches 50 und die mittige Durchgangsöffnung 58 des Planetenträgers 36 sind jeweils mit einem von außen zugänglichen Deckel 62 bzw. 64 verschlossen. Die Querschnittsflächen der Durchgangsöffnungen 58 und 60 sind dabei derart bemessen, dass das Sonnenrad 34 durch diese entnehmbar ist.The planet gears 38 are each rotatably supported by a rolling bearing 42 on a Planetenradachse 40, which is received on the planet carrier 36 manufactured from EN GJS 600. The planet gears 38 are further connected to a rotatably held on the housing 12, an internal gear having ring gear 44 in engagement. This results in that the planet carrier 36 is driven in rotation via the sun gear 34. The upper portion of the planet carrier 36 is formed as a hollow shaft and mounted on a slide bearing 46 on a housing holding portion 12 b of the housing 12. The upper free end of the planetary carrier 36 is fixedly connected to an output flange 50 made of EN GJS 500, which carries the grinding plate, not shown. For torque transmission between the planet carrier 36 and the Output flange 50 screws 52 and pins 54 are provided, which together form a screw-pin connection. The output flange 50 is mounted axially on plain bearings 56 on the housing holding portion 12b. The central passage opening 60 of the output flange 50 and the central passage opening 58 of the planet carrier 36 are each closed with an externally accessible cover 62 and 64, respectively. The cross-sectional areas of the through openings 58 and 60 are dimensioned such that the sun gear 34 can be removed by this.

Der Gehäusehalteabschnitt 12b ist mit Ölrücklaufbohrungen 66 versehen, und in dem Planetenträger 36 sind Schmiermittelbohrungen 68 ausgebildet, um die Wälzlager 42 der Planetenräder 38 mit Schmiermittel zu versorgen.The housing holding portion 12b is provided with oil return holes 66, and in the planet carrier 36 lubricant holes 68 are formed to supply the rolling bearings 42 of the planet gears 38 with lubricant.

Das in Figur 1 dargestellte Vertikalmühlengetriebe 10 zeichnet sich zum einen durch seinen konstruktiv einfachen, preiswerten, leicht zu montierenden und bequem zu wartenden Aufbau aus. Aufgrund der Tatsache, dass zur Drehmomentübertragung zwischen dem Planetenträger 36 und dem Abtriebsflansch 50 eine Schraub-Stift-Verbindung eingesetzt wird, ist nur eine geringe Anzahl an Bauteilen erforderlich. Ferner lassen sich der Planetenträger 36 und der Abtriebsflansch 50 einfach und preiswert herstellen. Die Werkstoffanforderungen dieser Bauteile sind dank der Schraub-Stift-Verbindung gering, so dass preiswerte Materialien eingesetzt werden können.This in FIG. 1 shown vertical mill gear 10 is characterized on the one hand by its structurally simple, inexpensive, easy to install and easy to maintain construction. Due to the fact that a screw-pin connection is used for torque transmission between the planetary carrier 36 and the output flange 50, only a small number of components is required. Furthermore, the planetary carrier 36 and the output flange 50 can be produced easily and inexpensively. The material requirements of these components are low, thanks to the screw-pin connection, so that inexpensive materials can be used.

Die Verwendung der besagten Schraub-Stift-Verbindung ist ferner dahingehend von Vorteil, dass der Planetenträger 36 im Gegensatz zu der eingangs beschriebenen bekannten Konstruktion mit Kegelsitz als Hohlwelle ausgebildet werden kann. Entsprechend lässt sich der Planetenträger 36 einfach gießen. Ferner ist es dank der Hohlwelle möglich, das Sonnenrad 34 zu inspizieren und ggf. auszubauen, ohne hierfür den Abtriebsflansch 50, den Gehäusehalteabschnitt 12b und den Planetenträger 36 demontieren zu müssen. Es genügt das Entfernen der Deckel 62 und 64, wodurch Wartungs- und Reparaturarbeiten einfach und bequem durchführbar sind. Zudem ist kein Spezialwerkzeug erforderlich, wie beispielsweise ein Maximator zum Lösen eines Kegelsitzes.The use of said screw-pin connection is further advantageous in that the planet carrier 36 can be formed as a hollow shaft in contrast to the known construction described above with conical seat. Accordingly, the planet carrier 36 is easy to pour. Further, thanks to the hollow shaft, it is possible to inspect and possibly remove the sun gear 34 without having to disassemble the output flange 50, the housing retaining portion 12b and the planet carrier 36 for this purpose. That's enough Removing the lid 62 and 64, whereby maintenance and repair work is easy and convenient to carry out. In addition, no special tool is required, such as a Maximator for releasing a conical seat.

Darüber hinaus verfügt das Vertikalmühlengetriebe 10 über eine einfache und sehr effektive Ölversorgung.In addition, the vertical mill gear 10 has a simple and very effective oil supply.

Obwohl die Erfindung im Detail durch das bevorzugte Ausführungsbeispiel näher illustriert und beschrieben wurde, so ist die Erfindung nicht durch die offenbarten Beispiele eingeschränkt und andere Variationen können vom Fachmann hieraus abgeleitet werden, ohne den Schutzumfang der Erfindung zu verlassen.Although the invention has been further illustrated and described in detail by the preferred embodiment, the invention is not limited by the disclosed examples, and other variations can be derived therefrom by those skilled in the art without departing from the scope of the invention.

Claims (10)

Vertikalmühlengetriebe (10) mit - einem Gehäuse (12), das einen lösbar befestigten und im Wesentlichen ringförmig ausgebildeten Gehäusehalteabschnitt (12b) aufweist; - einem Sonnenrad (34), das an einer am Gehäuse (12) gelagerten, über einen Motor antreibbaren Sonnenradwelle (33) vorgesehen ist; - einem drehbar an dem Gehäusehalteabschnitt (12b) gelagerten Planetenträger (36), an dem zumindest ein Planetenrad (38) drehbar gehalten ist, wobei das Planetenrad (38) mit dem Sonnenrad (34) in Eingriff ist; - einem drehfest an dem Gehäuse (12) gehaltenen, eine Innenverzahnung aufweisenden Hohlrad (44), mit dem das zumindest eine Planetenrad (34) in Eingriff ist, und - einem drehfest mit dem Planetenträger (36) verbundenen und an dem Gehäuse (12) gelagerten Abtriebsflansch (50); dadurch gekennzeichnet, dass
der Abtriebsflansch (50) und der Planetenträger (36) über eine Schraub-Stift-Verbindung (52, 54) direkt aneinander befestigt sind.Vertical mill gear (10) with - A housing (12) having a releasably secured and substantially annular housing housing portion (12 b); - A sun gear (34) which is provided on a housing (12) mounted on a motor driven sun gear (33); a planet carrier (36) rotatably mounted on the housing holding portion (12b) and rotatably supporting thereon at least one planetary gear (38), the planetary gear (38) being engaged with the sun gear (34); - A rotationally fixed to the housing (12) held, an internal gear having ring gear (44), with which the at least one planet gear (34) is engaged, and - A non-rotatably connected to the planet carrier (36) and on the housing (12) mounted output flange (50); characterized in that
the output flange (50) and the planet carrier (36) via a screw-pin connection (52, 54) are fastened directly to each other. Vertikalmühlengetriebe (10) nach Anspruch 1,
dadurch gekennzeichnet, dass
der Planetenträger (36) über ein radiales Gleitlager (46) an dem Gehäuse (12, 12b) gelagert ist.Vertical mill gear (10) according to claim 1,
characterized in that
the planet carrier (36) is mounted on the housing (12, 12b) via a radial sliding bearing (46). Vertikalmühlengetriebe (10) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
zwischen dem Abtriebsflansch (50) und dem Gehäuse (12), insbesondere dem Gehäusehalteabschnitt (12b), ein Gleitlager (56) vorgesehen ist.Vertical mill gear (10) according to one of the preceding claims,
characterized in that
between the Abtriebsflansch (50) and the housing (12), in particular the housing holding portion (12b), a sliding bearing (56) is provided. Vertikalmühlengetriebe (10) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
der Planetenträger (36) und der Abtriebsflansch (50) miteinander fluchtende Durchgangsöffnungen (58, 60) aufweisen, wobei zumindest ein Deckel (62) zum Verschließen der Durchgangsöffnung (58) des Planetenträgers (36) vorgesehen ist.Vertical mill gear (10) according to one of the preceding claims,
characterized in that
the planet carrier (36) and the output flange (50) have mutually aligned through openings (58, 60), wherein at least one cover (62) for closing the passage opening (58) of the planet carrier (36) is provided. Vertikalmühlengetriebe (10) nach Anspruch 4,
dadurch gekennzeichnet, dass
die Durchgangsöffnungen (58, 60) des Planetenträgers (36) und des Abtriebtriebsflansches (50) einen Öffnungsquerschnitt aufweisen, der derart dimensioniert ist, dass zumindest das Sonnenrad (34) durch diese entnehmbar ist.Vertical mill gear (10) according to claim 4,
characterized in that
the passage openings (58, 60) of the planet carrier (36) and the output drive flange (50) have an opening cross-section which is dimensioned such that at least the sun gear (34) can be removed therefrom. Vertikalmühlengetriebe (10) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
die Sonnenradwelle (33) über ein Kupplungselement (28) lösbar und drehfest, aber einstellbeweglich mit einer Zwischenwelle (24) verbunden ist, insbesondere über eine Kupplungshülse.Vertical mill gear (10) according to one of the preceding claims,
characterized in that
the sun gear (33) via a coupling element (28) releasably and non-rotatably, but adjustably connected to an intermediate shaft (24), in particular via a coupling sleeve. Vertikalmühlengetriebe (10) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
der Gehäusehalteabschnitt (12b) mit Ölrücklaufbohrungen (66) versehen ist.Vertical mill gear (10) according to one of the preceding claims,
characterized in that
the housing holding portion (12b) is provided with oil return holes (66). Vertikalmühlengetriebe (10) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
der Planetenträger (36) mit Schmiermittelbohrungen (68) zur Versorgung der Planetenradlagerung versehen ist.Vertical mill gear (10) according to one of the preceding claims,
characterized in that
the planet carrier (36) is provided with lubricant bores (68) for supplying the planet wheel bearing. Vertikalmühlengetriebe (10) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
der Abtriebsflansch (50) aus EN GJS 500 hergestellt ist.Vertical mill gear (10) according to one of the preceding claims,
characterized in that
the output flange (50) is made of EN GJS 500. Vertikalmühlengetriebe (10) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
der Planetenträger (36) aus EN GJS 600 hergestellt ist.Vertical mill gear (10) according to one of the preceding claims,
characterized in that
the planet carrier (36) is made of EN GJS 600.
EP11177670.4A 2011-04-14 2011-08-16 Vertical mill gear Active EP2511010B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

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DE102011017044 2011-04-14

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3056278A1 (en) 2015-02-10 2016-08-17 Siemens Aktiengesellschaft Drive assembly for a vertical mill
CN107498505A (en) * 2017-09-11 2017-12-22 江苏省金象传动设备股份有限公司 A kind of vertical mill decelerator spiral bevel gear quick-disassembly structure
CN118002288A (en) * 2024-04-09 2024-05-10 新乡市豫东轻工机械有限公司 Milling equipment for biomass energy raw materials

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2698673T3 (en) * 2015-02-02 2019-02-05 Flender Gmbh Drive arrangement, work machine with at least one such drive arrangement as well as procedure for operating such drive arrangement
ES2812207T3 (en) * 2017-06-14 2021-03-16 Flender Gmbh Vertical mill transmission

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3240222A1 (en) * 1981-11-02 1983-05-11 Maag-Zahnräder & -Maschinen AG, 8023 Zürich ROLL BOWL MILL
DE10013097A1 (en) * 2000-03-16 2001-09-27 Hitachi Ltd Coal grinder with reduction gearing with air cooling provided by cooling blower in input shaft set upstream of cooler which cools lubricating oil

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3240222A1 (en) * 1981-11-02 1983-05-11 Maag-Zahnräder & -Maschinen AG, 8023 Zürich ROLL BOWL MILL
DE10013097A1 (en) * 2000-03-16 2001-09-27 Hitachi Ltd Coal grinder with reduction gearing with air cooling provided by cooling blower in input shaft set upstream of cooler which cools lubricating oil

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3056278A1 (en) 2015-02-10 2016-08-17 Siemens Aktiengesellschaft Drive assembly for a vertical mill
US10041566B2 (en) 2015-02-10 2018-08-07 Siemens Aktiengesellschaft Gearing arrangement for a vertical mill
CN107498505A (en) * 2017-09-11 2017-12-22 江苏省金象传动设备股份有限公司 A kind of vertical mill decelerator spiral bevel gear quick-disassembly structure
CN107498505B (en) * 2017-09-11 2024-01-23 江苏省金象传动设备股份有限公司 Quick-dismantling structure for spiral bevel gear of speed reducer of vertical mill
CN118002288A (en) * 2024-04-09 2024-05-10 新乡市豫东轻工机械有限公司 Milling equipment for biomass energy raw materials

Also Published As

Publication number Publication date
CN202833872U (en) 2013-03-27
ES2426490T3 (en) 2013-10-23
EP2511010B1 (en) 2013-07-31

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