EP2323771B1 - Heavy-duty drive arrangement and mill driven by the same - Google Patents

Heavy-duty drive arrangement and mill driven by the same Download PDF

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Publication number
EP2323771B1
EP2323771B1 EP08803156A EP08803156A EP2323771B1 EP 2323771 B1 EP2323771 B1 EP 2323771B1 EP 08803156 A EP08803156 A EP 08803156A EP 08803156 A EP08803156 A EP 08803156A EP 2323771 B1 EP2323771 B1 EP 2323771B1
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EP
European Patent Office
Prior art keywords
electric motor
arrangement
rotor
housing
mill
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EP08803156A
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German (de)
French (fr)
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EP2323771B2 (en
EP2323771A1 (en
Inventor
Stefan Rittler
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FLSmidth AS
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FLSmidth AS
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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
    • 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
    • B02C15/06—Mills with rollers forced against the interior of a rotary ring, e.g. under spring action
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing

Definitions

  • the invention relates to mills, such as, for example, roller mills, in particular cement mills and coal mills, and in particular to heavy duty drive arrangements used therefor. It relates to devices according to the preamble of the independent claims.
  • the roller bowl is driven via a gearbox by a motor arranged laterally next to the gearbox.
  • the rotational movement of the motor is forwarded via a coupling to a bevel gear stage, by means of which the rotational movement initially taking place about a horizontal axis is deflected onto a vertical axis.
  • a gearbox usually a planetary gear is used, which moves the roller bowl via an output flange; Alternatively or additionally, a spur gear is often used.
  • Bevel gear stages are very expensive to manufacture, especially if they are to be of great precision.
  • Figs. 2 to 4 from CH 658'801 It is proposed to arrange an electric motor with a vertical axis below the transmission in a roller mill.
  • the roll bowl mill is held by means of a rack or columns, wherein the frame or columns are supported on a foundation.
  • the electric motor was sunk in these cases in the foundation, so that height above the foundation can be saved.
  • the roller mill is held by columns supported on a foundation.
  • the electric motor is in this case arranged between the columns and supported separately between the columns on the foundation.
  • an alternative constructed drive arrangement is to be created.
  • Another object of the invention is to provide a corresponding mill.
  • Another object of the invention is to provide a bevel gear free drive assembly.
  • Another object of the invention is to provide a way to replace bevel gear stages in existing drive assemblies or mills, in particular while achieving a non-increased or even reduced space consumption.
  • Another object of the invention is to provide particularly compact drive assemblies or mills.
  • Another object of the invention is to provide particularly durable and / or low-service drive arrangements or mills.
  • the heavy duty drive assembly for a mill having a grinding bowl rotatable about the vertical comprises a housing, an electric motor, and a gear assembly disposed in the housing and supported on the housing. About the gear assembly, the grinding bowl is driven by means of the electric motor.
  • the electric motor is arranged below the gear arrangement.
  • the heavy-duty drive arrangement is characterized in that the electric motor is integrated in the housing. By integrating the electric motor, an alternative constructed drive arrangement can be provided.
  • the heavy duty drive assembly for a mill is generally more specifically a heavy duty drive assembly for the mill bowl of a mill.
  • the electric motor is disposed within the housing.
  • the mill is a roller mill.
  • the electric motor is supported on the housing. In this way, no separate support of the electric motor on a foundation more needed; instead, only the housing needs to be supported on a foundation, with both the gear assembly and the electric motor supported on the housing. The overall stability of the mill can thereby be increased.
  • the housing has a bottom element, and the electric motor is supported on the bottom element.
  • the floor element is typically supported on a foundation.
  • the bottom element comprises a bottom plate, in particular, the bottom element is a bottom plate.
  • the electric motor is arranged in a motor housing arranged within the housing of the heavy-duty drive arrangement.
  • the electric motor is additionally housed separately.
  • the electric motor has a rotor axis that is vertically aligned.
  • the electric motor has a rotor which is connected via a coupling with a wheel of the gear arrangement.
  • the rotor is connected via a single clutch to a wheel of the transmission assembly.
  • the gear assembly comprises a planetary gear with a sun gear, and the sun gear is connected via the clutch to the rotor.
  • the coupling has a toothing, which is formed in the rotor.
  • the wheel of the gear arrangement has an extension in the direction of the electric motor, whose end is toothed and engages in a toothing formed in the rotor.
  • the clutch includes these two gears, so the teeth of the end of the extension of the wheel towards the electric motor and the teeth formed in the rotor.
  • the wheel of the gear arrangement (in particular the sun gear of a planetary gear) has an extension (shaft) in the direction of the electric motor, the end of which has an external toothing which forms the clutch or at least a part thereof with an internal toothing formed in the rotor.
  • the coupling is arranged inside the rotor. As a result, a low overall height of the drive arrangement is made possible.
  • the clutch is disposed completely within the rotor. As a result, a particularly low overall height of the drive arrangement is made possible.
  • the rotor has an uppermost bearing (ie a bearing for the rotation of the rotor which is located uppermost in the vertical direction), and the coupling is (partially or completely) below the upper end of the uppermost bearing or even arranged below the top bearing.
  • the rotor has a lowermost bearing and a topmost bearing.
  • the coupling is a rigid coupling, more precisely: a torsionally rigid coupling.
  • the coupling is a flexible coupling, more precisely a torsionally flexible coupling.
  • the coupling may be a highly elastic coupling.
  • As a high-elastic coupling such elastic couplings are designated, which are designed or provided to be elastically deformed (twisted) several degrees.
  • the coupling is integrated directly in the rotor.
  • the electric motor has a rotor which is connected clutch-free with a wheel of the gear arrangement.
  • the gear assembly comprises a planetary gear with a sun gear, and the sun gear is clutchless connected to the rotor.
  • the gear assembly and the electric motor are directly connected.
  • the gear assembly and the rotor are interconnected via a torsion shaft.
  • a torsion wave is designed to allow a certain amount of torsion. By providing a torsion wave, suddenly occurring forces can be compensated, such as, for example, forces due to impacts which occur due to thick stones to be ground and lead to a deceleration of the rolling mill bowl.
  • the housing has a sub-housing, in which the electric motor is arranged, as well as a further sub-housing, in which the gear arrangement is arranged.
  • the gear assembly is supported on the sub-housing of the electric motor.
  • At least one part of at least one bearing of the rotor is arranged within the extension region of the active region of the rotor. This results in a low overall height of the electric motor.
  • the rotor has a diameter which is greater than the vertical extent of the active part of the rotor. As a result, a small height of the electric motor is possible.
  • the rotor is an internal rotor, that is, with respect to a radial coordinate, the stator is arranged outside the active part of the rotor.
  • the rotor is an external rotor, that is, with respect to a radial coordinate, the stator is disposed within the active part of the rotor.
  • the rotor is a pancake, that is, the rotor and stator overlap with respect to a radial coordinate, and the magnetic flux is at least partially substantially vertical.
  • the rotor is slidably mounted.
  • the rotor is mounted by means of rolling bearings, in particular by means of spherical roller bearings.
  • the electric motor has a stator which has one or (advantageously) a plurality of individually mountable pole shoes.
  • the rotor has permanent magnets, in particular those which contain at least one element of the rare earths. This will allows a particularly compact design of the electric motor.
  • the electric motor has at least two poles.
  • the rotor has at least one torsional vibration damping element. As a result, the safety factor of the transmission can be made smaller.
  • the electric motor is cooled by means of a blower, in particular air-cooled, wherein in one embodiment the electric motor is cooled directly (by itself) by means of the blower and in another, but combinable embodiment, the electric motor is indirectly cooled by the electric motor housing is cooled by means of the blower.
  • the electric motor is indirectly cooled by cooling a casing containing the electric motor by a liquid coolant.
  • the gear assembly includes a cooling system
  • the electric motor has a cooling system thermally connected thereto.
  • the identical coolant can be used to cool both the gearbox assembly and the electric motor; In particular, this can also serve as a lubricant for the gear assembly.
  • the electric motor has a cooling system which includes in a closed circuit a fluid (ie liquid or gaseous) coolant which can release heat to another fluid coolant by means of a heat exchanger.
  • a fluid ie liquid or gaseous
  • the electric motor can be cooled particularly efficiently.
  • the gear arrangement has a spur gear arrangement. This can be particularly advantageous in the case of an eccentrically arranged electric motor, ie an electric motor with a rotor axis, which does not coincide with the axis of rotation of the grinding bowl.
  • the gear arrangement has a planetary gear.
  • the planetary gear has a vertically extending central axis.
  • the planetary gear has a central axis which corresponds to the axis of rotation of the grinding bowl.
  • the planetary gear has a central axis which corresponds to the rotor axis of the electric motor.
  • the gear arrangement has a multi-stage, in particular a two-stage planetary gear.
  • the planetary gear can be coupled with or without load branching.
  • the electric motor is disposed in the same housing as other parts of the heavy duty drive assembly, in particular as the gear assembly.
  • the mill according to the invention comprises a heavy duty drive assembly according to the invention.
  • the mill is a roller mill, for example a cement mill or a coal mill.
  • Fig. 1 shows schematically and cut a drive assembly 1 with a directly connected to a single-stage planetary gear 4 internal rotor electric motor 5. As in the other figures are in Fig. 1 Gears not explicitly shown.
  • the drive assembly 1 has a housing 6, in which the electric motor 5 and the planetary gear 4 are supported.
  • the electric motor 5 has a stator 8 and a rotor 7.
  • the rotor 7 is rotatably mounted in an upper bearing 10 and in a lower bearing 9.
  • Stator 8 and the lower bearing 9 are supported on a bottom element 6 c of the housing, which supports on a foundation 3.
  • the electric motor 5 is arranged in a lower part housing 6a of the housing 6, while the planetary gear 4 is arranged in an upper part housing 6b of the housing 6. As a result, the planetary gear 4 is supported on the lower part housing 6a.
  • the planetary gear 4 has a ring gear 12, a sun gear 11 and a plurality of planet gears 13.
  • the sun gear 11 is directly connected to the rotor 7 of the electric motor 5; no clutch is provided between the two.
  • So electric motor 5 (more precisely: rotor 7) and planetary gear 4 (more precisely: sun gear 11) fixed to each other, connected to each other without play.
  • the rotation of the rotor 7 thus causes an immediate rotation of the sun gear 11, through which the planet gears 13 are driven, which in turn a Drive output flange 14 of the drive assembly 1. Due to the rotation of the output flange 14, a mill flange 2 belonging to a cement mill is driven.
  • the electric motor 5 has a rotor axis R, which coincides with a central axis Z of the planetary gear 4 and a rotation axis A of the mill flange 2.
  • the axes A, Z, R all run along the vertical.
  • a vertical coordinate is denoted by x, a radial coordinate by r.
  • Fig. 2 shows schematically and cut a drive assembly 1 with a connected via a clutch 15 with a single-stage planetary gear 4 separately housed internal rotor electric motor. 5
  • Fig. 2 The embodiment of Fig. 2 is largely the same as in Fig. 1 illustrated embodiment and will be described starting therefrom.
  • the electric motor 5 is not only always located half of the housing 6, but also housed separately in a slightly built separate housing 16 (motor housing 16).
  • the sun gear 11 is not directly, but via a coupling 15, for example via an elastic coupling, connected to the electric motor 5.
  • the lower bearing 9 of the rotor 7 (which has an axial extent h) is completely within the axial extent (height) H of the active part of the rotor 7 is arranged. Further, the height H of the active part of the rotor 7 is smaller than the diameter D of the rotor 7.
  • torsional vibration damping element This causes torsional vibrations in the rotor to be damped. This can be effected for example by means of a mass body which is supported by a damping element (for example a spring element) or by means of a damping medium (for example a liquid).
  • a damping element for example a spring element
  • a damping medium for example a liquid
  • Fig. 3 shows schematically and cut a drive assembly with a separately integrated internal rotor electric motor 5 connected via a clutch 15 integrated in the rotor with a single-stage planetary gear.
  • Fig. 3 The embodiment of Fig. 3 is largely the same as in Fig. 2 illustrated embodiment and will be described starting therefrom.
  • a flexible coupling 15 is disposed within the rotor 7. It is formed by the interaction of two gears, one of which is formed in the rotor 7 and the other at one end of an extension of the gear 11 of the planetary gear 4, wherein elastic bodies are arranged between the teeth, so that a desired flexibility is achieved.
  • Reference numeral 25 denotes a gasket which seals the lower part housing 6a enclosing the electric motor 5 with respect to the upper part housing 6b containing the gear arrangement 4.
  • Fig. 4 shows schematically and cut a drive assembly 1 with a directly with a multi-stage planetary gear 4 connected with power split pancake electric motor 5.
  • the sun gear 11 of the upper part transmission is connected directly to the rotor 7.
  • Fig. 5 shows schematically and cut a drive assembly 1 with a directly connected to a multi-stage planetary gear 4 external rotor electric motor 5.
  • the sun gear 11 of the lower part transmission is connected directly to the rotor 7.
  • Fig. 6 shows schematically and in section a drive assembly 1 with an eccentrically arranged outboard rotor electric motor 5 and spur gear 4b.
  • the spur gear assembly 4b together with a planetary gear arrangement 4a consisting of two planetary gears, forms the gear arrangement 4 of the drive assembly 1.
  • the electric motor 5 has a rotor axis R which is parallel to the axis A but does not coincide therewith.
  • the electric motor is housed separately (motor housing 16) and has a hollow rotor 7.
  • Fig. 7 shows a highly schematic diagram of cooling systems of a drive assembly, for example according to one of the previously described.
  • the electric motor 5 has a closed cooling circuit 20, which is filled with a cooling fluid 22, for example water or a gas.
  • the gear arrangement 4 eg a planetary gear 4
  • the two cooling circuits 19, 20 are thermally coupled, for example via a heat exchanger 18.
  • Fig. 8 shows in the same way as Fig. 7 highly schematic diagram of a cooling system of a drive assembly, for example according to one of the previously described.
  • the cooling circuit of the gear assembly 4 and the cooling circuit of the electric motor 5 form a common cooling circuit 24.
  • the identical cooling fluid 23 is used to cool both the gear assembly 4 and the electric motor 5.
  • the cooling fluid 21 or 23 used for cooling the gear arrangement 4 also serves as lubricant for the gear arrangement 4.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Crushing And Grinding (AREA)
  • Retarders (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Nonmetallic Welding Materials (AREA)
  • Operation Control Of Excavators (AREA)
  • Jib Cranes (AREA)

Abstract

A heavy-duty drive arrangement for a mill having a grinding bowl ratable about a vertical axis comprises a housing, an electric motor, and a gearing arrangement disposed in the housing and supported on the housing. The grinding bowl can be driven by means of the electric motor via the gearing arrangement. The electric motor is disposed below the gearing arrangement. The electric motor is integrated in the housing. Advantageously, the electric motor is supported on the housing particularly on a bottom element of the housing. The rotor can be connected directly, or via a coupling integrated in the rotor, to a gear of the gearing arrangement. The mill may be, for example, a roller bowl mill.

Description

Technisches GebietTechnical area

Die Erfindung bezieht sich auf Mühlen, wie zum Beispiel Walzenschüsselmühlen, insbesondere Zementmühlen und Kohlemühlen, sowie insbesondere auf dafür verwendete Schwerlastantriebsanordnungen. Sie bezieht sich auf Vorrichtungen gemäss dem Oberbegriff der unabhängigen Patentansprüche.The invention relates to mills, such as, for example, roller mills, in particular cement mills and coal mills, and in particular to heavy duty drive arrangements used therefor. It relates to devices according to the preamble of the independent claims.

Stand der TechnikState of the art

In den meisten heutigen Zementmühlen und Kohlemühlen wird die Walzenschüssel über ein Getriebe von einem seitlich neben dem Getriebe angeordneten Motor angetrieben. Bei derartigen Mühlen mit horizontal angeordneter Walzenschüssel wird die Rotationsbewegung des Motors über eine Kupplung an eine Kegelradstufe weitergeleitet, durch die die zunächst um eine horizontale Achse stattfindende Drehbewegung auf eine vertikale Achse umgelenkt wird. Als Getriebe wird meist ein Planetengetriebe verwendet, welches über einen Abtriebsflansch die Walzenschüssel bewegt; alternativ oder zusätzlich wird oft auch ein Stirnradgetriebe verwendet.In most of today's cement mills and coal mills, the roller bowl is driven via a gearbox by a motor arranged laterally next to the gearbox. In such mills with a horizontally arranged roller bowl, the rotational movement of the motor is forwarded via a coupling to a bevel gear stage, by means of which the rotational movement initially taking place about a horizontal axis is deflected onto a vertical axis. As a gearbox usually a planetary gear is used, which moves the roller bowl via an output flange; Alternatively or additionally, a spur gear is often used.

In Fig. 1 von CH 658'801 ist ein solcher Aufbau offenbart.In Fig. 1 from CH 658'801 such a structure is disclosed.

Kegelradstufen sind sehr aufwendig zu fertigen, insbesondere wenn sie von grosser Präzision sein sollen. Ausserdem erzeugen Kegelradstufen in den Lagern sehr grosse radiale und axiale Kräfte, die es aufzufangen gilt, was entsprechend aufwendige Dimensionierungen nach sich zieht.Bevel gear stages are very expensive to manufacture, especially if they are to be of great precision. In addition, generating bevel gear stages in the camps very large radial and axial forces that it is necessary to absorb, which entails correspondingly expensive dimensions by itself.

In US 4'887'489 wird vorgeschlagen, den Motor mit vertikaler Achse seitlich neben dem Getriebe zu plazieren und die Drehbewegung mittels einer Zahnradkaskade ins Getriebe zu leiten, da auf diese Weise kein Kegelradgetriebe benötigt wird.In US 4,887,489 It is proposed to place the motor with a vertical axis laterally next to the transmission and to direct the rotational movement by means of a gear cascade into the transmission, since in this way no bevel gear is needed.

In Figs. 2 bis 4 von CH 658'801 wird vorgeschlagen, bei einer Walzenschüsselmühle einen Elektromotor mit vertikaler Achse unterhalb des Getriebes anzuordnen. In Figs. 3 und 4 von CH 658'801 ist die Walzenschüsselmühle mittels eines Gestells oder Säulen gehalten, wobei Gestell bzw. Säulen auf einem Fundament abgestützt sind. Der Elektromotor wurde in diesen Fällen in das Fundament versenkt, so dass oberhalb des Fundamentes Bauhöhe gespart werden kann. In Fig. 2 von CH 658'801 ist die Walzenschüsselmühle mittels Säulen gehalten, die auf einem Fundament abgestützt sind. Der Elektromotor ist in diesem Fall zwischen den Säulen angeordnet und zwischen den Säulen separat auf dem Fundament abgestützt.In Figs. 2 to 4 from CH 658'801 It is proposed to arrange an electric motor with a vertical axis below the transmission in a roller mill. In Figs. 3 and 4 from CH 658'801 the roll bowl mill is held by means of a rack or columns, wherein the frame or columns are supported on a foundation. The electric motor was sunk in these cases in the foundation, so that height above the foundation can be saved. In Fig. 2 from CH 658'801 the roller mill is held by columns supported on a foundation. The electric motor is in this case arranged between the columns and supported separately between the columns on the foundation.

Darstellung der ErfindungPresentation of the invention

Bei den aus dem Stand der Technik bekannten Walzenschüsselmühlen bzw. deren Antriebsanordnungen ist der Motor stets ein separates Teil. Der Erfinder hat festgestellt, dass sich daraus nachteilige Konsequenzen für die Konstruktion der Mühle ergeben. Insbesondere macht dies erforderlich, dass die beim Mahlprozess auftretenden grossen vertikalen Kräfte seitlich um den Motor herum in der Mühlenkonstruktion abgeleitet werden müssen und dass der Motor separat auf einem Fundament abgestützt werden muss.In the known from the prior art roller mills or their drive assemblies, the engine is always a separate part. The inventor has found that this has adverse consequences for the construction of the mill. In particular, this requires that the large vertical forces occurring during the milling process must be dissipated laterally around the engine in the mill design and that the motor must be supported separately on a foundation.

Es ist eine Aufgabe der Erfindung, eine Schwerlastantriebsanordnung der eingangs genannten Art zu schaffen, welche die oben genannten Nachteile nicht aufweist. Insbesondere soll eine alternativ konstruierte Antriebsanordnung geschaffen werden. Eine weitere Aufgabe der Erfindung ist es, eine entsprechende Mühle zu schaffen.It is an object of the invention to provide a heavy duty drive arrangement of the type mentioned, which does not have the disadvantages mentioned above. In particular, an alternative constructed drive arrangement is to be created. Another object of the invention is to provide a corresponding mill.

Eine weitere Aufgabe der Erfindung ist es, eine kegelradstufenfreie Antriebsanordnung zu schaffen.Another object of the invention is to provide a bevel gear free drive assembly.

Eine weitere Aufgabe der Erfindung ist es, eine Möglichkeit zum Ersetzen von Kegelradstufen in bereits vorhandenen Antriebsanordnungen bzw. Mühlen zu schaffen, insbesondere unter Erzielung eines nicht vergrösserten oder sogar verringerten Platzverbrauchs.Another object of the invention is to provide a way to replace bevel gear stages in existing drive assemblies or mills, in particular while achieving a non-increased or even reduced space consumption.

Eine weitere Aufgabe der Erfindung ist es, besonders kompakte Antriebsanordnungen bzw. Mühlen zu schaffen.Another object of the invention is to provide particularly compact drive assemblies or mills.

Eine weitere Aufgabe der Erfindung ist es, besonders langlebige und/oder servicearme Antriebsanordnungen bzw. Mühlen zu schaffen.Another object of the invention is to provide particularly durable and / or low-service drive arrangements or mills.

Mindestens eine dieser Aufgaben löst eine Schwerlastanordnung und ein Verfahren mit den Merkmalen des unabhängigen Patentanspruchs 1 sowie eine durch die in Anspruch 18 angegebenen Merkmale definierte Mühle.At least one of these objects is achieved by a heavy duty assembly and method having the features of independent claim 1 and a mill defined by the features defined in claim 18.

Die Schwerlastantriebsanordnung für eine Mühle mit einer um die Vertikale rotierbaren Mahlschüssel weist auf: ein Gehäuse, einen Elektromotor und eine in dem Gehäuse angeordnete und an dem Gehäuse abgestützte Getriebeanordnung. Über die Getriebeanordnung ist die Mahlschüssel mittels des Elektromotors antreibbar. Der Elektromotor ist unterhalb der Getriebeanordnung angeordnet. Die Schwerlastantriebsanordnung ist dadurch gekennzeichnet, dass der Elektromotor in das Gehäuse integriert ist. Durch die Integration des Elektromotors kann eine alternativ konstruierte Antriebsanordnung geschaffen werden.The heavy duty drive assembly for a mill having a grinding bowl rotatable about the vertical comprises a housing, an electric motor, and a gear assembly disposed in the housing and supported on the housing. About the gear assembly, the grinding bowl is driven by means of the electric motor. The electric motor is arranged below the gear arrangement. The heavy-duty drive arrangement is characterized in that the electric motor is integrated in the housing. By integrating the electric motor, an alternative constructed drive arrangement can be provided.

Die Schwerlastantriebsanordnung für eine Mühle ist im allgemeinen genauer gesagt eine Schwerlastantriebsanordnung für die Mahlschüssel einer Mühle.More specifically, the heavy duty drive assembly for a mill is generally more specifically a heavy duty drive assembly for the mill bowl of a mill.

In einer Ausführungsform der Erfindung ist der Elektromotor innerhalb des Gehäuses angeordnet.In one embodiment of the invention, the electric motor is disposed within the housing.

In einer Ausführungsform der Erfindung ist die Mühle eine Walzenschüsselmühle.In one embodiment of the invention, the mill is a roller mill.

In einer Ausführungsform der Erfindung ist der Elektromotor an dem Gehäuse abgestützt. Auf diese Weise wird keine separate Abstützung des Elektromotors auf einem Fundament mehr benötigt; statt dessen braucht nur das Gehäuse auf einem Fundament abgestützt zu werden, wobei sich sowohl die Getriebeanordnung als auch der Elektromotor an dem Gehäuse abstützen. Die Gesamtstabilität des Mühle kann dadurch erhöht sein.In one embodiment of the invention, the electric motor is supported on the housing. In this way, no separate support of the electric motor on a foundation more needed; instead, only the housing needs to be supported on a foundation, with both the gear assembly and the electric motor supported on the housing. The overall stability of the mill can thereby be increased.

In einer Ausführungsform der Erfindung weist das Gehäuse ein Bodenelement auf, und der Elektromotor ist auf das Bodenelement abgestützt.In one embodiment of the invention, the housing has a bottom element, and the electric motor is supported on the bottom element.

Das Bodenelement ist typischerweise auf ein Fundament abgestützt.The floor element is typically supported on a foundation.

In einer Ausführungsform der Erfindung umfasst das Bodenelement eine Bodenplatte, insbesondere ist das Bodenelement eine Bodenplatte.In one embodiment of the invention, the bottom element comprises a bottom plate, in particular, the bottom element is a bottom plate.

In einer Ausführungsform der Erfindung ist der Elektromotor in einem innerhalb des Gehäuses der Schwerlastantriebsanordnung angeordneten Motorgehäuse angeordnet.In one embodiment of the invention, the electric motor is arranged in a motor housing arranged within the housing of the heavy-duty drive arrangement.

In einer Ausführungsform ist der Elektromotor zusätzlich separat gehäust.In one embodiment, the electric motor is additionally housed separately.

In einer Ausführungsform weist der Elektromotor eine Rotorachse auf, die vertikal ausgerichtet ist.In one embodiment, the electric motor has a rotor axis that is vertically aligned.

In einer Ausführungsform der Erfindung weist der Elektromotor einen Rotor auf, der über eine Kupplung mit einem Rad der Getriebeanordnung verbunden ist.In one embodiment of the invention, the electric motor has a rotor which is connected via a coupling with a wheel of the gear arrangement.

In einer Ausführungsform der Erfindung ist der Rotor über eine einzige Kupplung mit einem Rad der Getriebeanordnung verbunden.In one embodiment of the invention, the rotor is connected via a single clutch to a wheel of the transmission assembly.

In einer Ausführungsform der Erfindung weist die Getriebeanordnung ein Planetengetriebe mit einem Sonnenrad auf, und das Sonnenrad ist über die Kupplung mit dem Rotor verbunden.In one embodiment of the invention, the gear assembly comprises a planetary gear with a sun gear, and the sun gear is connected via the clutch to the rotor.

In einer Ausführungsform der Erfindung weist die Kupplung eine Verzahnung auf, welche im Rotor ausgebildet ist.In one embodiment of the invention, the coupling has a toothing, which is formed in the rotor.

Dadurch kann eine besonders kompakte Bauform der Schwerlastantriebsanordnung realisiert werden.As a result, a particularly compact design of the heavy duty drive arrangement can be realized.

In einer Ausführungsform der Erfindung weist das Rad der Getriebeanordnung eine Verlängerung Richtung Elektromotor auf, deren Ende verzahnt ist und in eine im Rotor ausgebildete Verzahnung eingreift.In one embodiment of the invention, the wheel of the gear arrangement has an extension in the direction of the electric motor, whose end is toothed and engages in a toothing formed in the rotor.

In einer Ausführungsform der Erfindung beinhaltet die Kupplung diese beiden Verzahnungen, also die Verzahnung des Endes der Verlängerung des Rades Richtung Elektromotor und die im Rotor ausgebildete Verzahnung.In one embodiment of the invention, the clutch includes these two gears, so the teeth of the end of the extension of the wheel towards the electric motor and the teeth formed in the rotor.

In einer Ausführungsform der Erfindung weist das Rad der Getriebeanordnung (insbesondere das Sonnenrad eines Planetengetriebes) eine Verlängerung (Welle) Richtung Elektromotor auf, deren Ende eine Aussenverzahnung aufweist, die mit einer im Rotor ausgebildeten Innenverzahnung die Kupplung oder zumindest einen Teil davon bildet.In one embodiment of the invention, the wheel of the gear arrangement (in particular the sun gear of a planetary gear) has an extension (shaft) in the direction of the electric motor, the end of which has an external toothing which forms the clutch or at least a part thereof with an internal toothing formed in the rotor.

In einer Ausführungsform der Erfindung ist die Kupplung innerhalb des Rotors angeordnet. Dadurch wird eine geringe Bauhöhe der Antriebsanordnung ermöglicht.In one embodiment of the invention, the coupling is arranged inside the rotor. As a result, a low overall height of the drive arrangement is made possible.

In einer Ausführungsform der Erfindung ist die Kupplung komplett innerhalb des Rotors angeordnet. Dadurch wird eine besonders geringe Bauhöhe der Antriebsanordnung ermöglicht.In one embodiment of the invention, the clutch is disposed completely within the rotor. As a result, a particularly low overall height of the drive arrangement is made possible.

In einer Ausführungsform der Erfindung hat der Rotor ein oberstes Lager (also ein Lager für die Rotation des Rotors, das in vertikaler Richtung am weitesten oben angeordnet ist), und die Kupplung ist (teilweise oder komplett) unterhalb des oberen Endes des obersten Lagers oder sogar unterhalb des obersten Lagers angeordnet. Typischerweise hat der Rotor ein unterstes Lager und ein oberstes Lager.In one embodiment of the invention, the rotor has an uppermost bearing (ie a bearing for the rotation of the rotor which is located uppermost in the vertical direction), and the coupling is (partially or completely) below the upper end of the uppermost bearing or even arranged below the top bearing. Typically, the rotor has a lowermost bearing and a topmost bearing.

Diese Ausführungsformen sind besonders vorteilhaft, wenn der Rotor als Innenläufer ausgebildet ist (zum Innenläufer siehe auch weiter unten).These embodiments are particularly advantageous when the rotor is designed as an internal rotor (for internal rotor see also below).

In einer Ausführungsform der Erfindung ist die Kupplung eine starre Kupplung, genauer: eine drehstarre Kupplung.In one embodiment of the invention, the coupling is a rigid coupling, more precisely: a torsionally rigid coupling.

In einer Ausführungsform der Erfindung ist die Kupplung eine elastische Kupplung, genauer: eine dreh-elastische Kupplung. Insbesondere kann die Kupplung eine hochelastische Kupplung sein. Als hochelastische Kupplung werden solche elastischen Kupplungen bezeichnet, die dafür ausgelegt bzw. vorgesehen sind, um mehrere Grad elastisch verformt (tordiert) zu werden.In one embodiment of the invention, the coupling is a flexible coupling, more precisely a torsionally flexible coupling. In particular, the coupling may be a highly elastic coupling. As a high-elastic coupling such elastic couplings are designated, which are designed or provided to be elastically deformed (twisted) several degrees.

In einer Ausführungsform der Erfindung ist die Kupplung direkt im Rotor integriert.In one embodiment of the invention, the coupling is integrated directly in the rotor.

In einer Ausführungsform der Erfindung weist der Elektromotor einen Rotor auf, der kupplungsfrei mit einem Rad der Getriebeanordnung verbunden ist.In one embodiment of the invention, the electric motor has a rotor which is connected clutch-free with a wheel of the gear arrangement.

In einer Ausführungsform der Erfindung weist die Getriebeanordnung ein Planetengetriebe mit einem Sonnenrad auf, und das Sonnenrad ist kupplungsfrei mit dem Rotor verbunden.In one embodiment of the invention, the gear assembly comprises a planetary gear with a sun gear, and the sun gear is clutchless connected to the rotor.

In einer Ausführungsform der Erfindung sind die Getriebeanordnung und der Elektromotor direkt miteinander verbunden.In one embodiment of the invention, the gear assembly and the electric motor are directly connected.

In einer Ausführungsform sind die Getriebeanordnung und der Rotor über eine Torsionswelle miteinander verbunden. Eine Torsionswelle ist so ausgelegt, dass sie ein gewisses Mass an Torsion zulässt. Durch das Vorsehen einer Torsionswelle können plötzlich auftretende Kräfte ausgeglichen werden, wie zum Beispiel Kräfte durch Schläge, die durch dicke zu mahlende Steine auftreten und zu einem Abbremsen der Walzmahlschüssel führen.In one embodiment, the gear assembly and the rotor are interconnected via a torsion shaft. A torsion wave is designed to allow a certain amount of torsion. By providing a torsion wave, suddenly occurring forces can be compensated, such as, for example, forces due to impacts which occur due to thick stones to be ground and lead to a deceleration of the rolling mill bowl.

In einer Ausführungsform der Erfindung weist das Gehäuse ein Teilgehäuse auf, in dem der Elektromotor angeordnet ist, sowie ein weiteres Teilgehäuse, in dem die Getriebeanordnung angeordnet ist.In one embodiment of the invention, the housing has a sub-housing, in which the electric motor is arranged, as well as a further sub-housing, in which the gear arrangement is arranged.

In einer Ausführungsform der Erfindung ist die Getriebeanordnung auf das Teilgehäuse des Elektromotors abgestützt.In one embodiment of the invention, the gear assembly is supported on the sub-housing of the electric motor.

In einer Ausführungsform der Erfindung ist bezüglich einer vertikalen Koordinate mindestens ein Teil mindestens eines Lagers der Rotors innerhalb des Erstreckungsbereiches des aktiven Bereiches des Rotors angeordnet. Dadurch ergibt sich eine geringe Bauhöhe des Elektromotors.In one embodiment of the invention, with respect to a vertical coordinate, at least one part of at least one bearing of the rotor is arranged within the extension region of the active region of the rotor. This results in a low overall height of the electric motor.

In einer Ausführungsform der Erfindung hat der Rotor einen Durchmesser, der grösser ist als die vertikale Erstreckung des aktiven Teiles des Rotors. Dadurch wird eine geringe Bauhöhe des Elektromotors möglich.In one embodiment of the invention, the rotor has a diameter which is greater than the vertical extent of the active part of the rotor. As a result, a small height of the electric motor is possible.

In einer Ausführungsform der Erfindung ist der Rotor ein Innenläufer, das heisst, bezüglich einer radialen Koordinate ist der Stator ausserhalb des aktiven Teils des Rotors angeordnet.In one embodiment of the invention, the rotor is an internal rotor, that is, with respect to a radial coordinate, the stator is arranged outside the active part of the rotor.

In einer Ausführungsform der Erfindung ist der Rotor ein Aussenläufer, das heisst, bezüglich einer radialen Koordinate ist der Stator innerhalb des aktiven Teils des Rotors angeordnet.In one embodiment of the invention, the rotor is an external rotor, that is, with respect to a radial coordinate, the stator is disposed within the active part of the rotor.

In einer Ausführungsform der Erfindung ist der Rotor ein Scheibenläufer, das heisst, dass sich Rotor und Stator bezüglich einer radialen Koordinate überlappen, und der Magnetfluss ist zumindest teilweise im wesentlichen vertikal verlaufend.In one embodiment of the invention, the rotor is a pancake, that is, the rotor and stator overlap with respect to a radial coordinate, and the magnetic flux is at least partially substantially vertical.

In einer Ausführungsform der Erfindung ist der Rotor gleitgelagert.In one embodiment of the invention, the rotor is slidably mounted.

In einer Ausführungsform der Erfindung ist der Rotor mittels Wälzlagern gelagert, insbesondere mittels Pendelrollenlagern.In one embodiment of the invention, the rotor is mounted by means of rolling bearings, in particular by means of spherical roller bearings.

In einer Ausführungsform der Erfindung weist der Elektromotor einen Stator auf, der einen oder (vorteilhaft) mehrere einzeln montierbare Polschuhe aufweist.In one embodiment of the invention, the electric motor has a stator which has one or (advantageously) a plurality of individually mountable pole shoes.

In einer Ausführungsform der Erfindung weist der Rotor Permanentmagnete auf, insbesondere solche, die mindestens ein Element der seltenen Erden beinhalten. Dadurch wird eine besonders kompakte Bauweise des Elektromotors ermöglicht.In one embodiment of the invention, the rotor has permanent magnets, in particular those which contain at least one element of the rare earths. This will allows a particularly compact design of the electric motor.

In einer Ausführungsform der Erfindung weist der Elektromotor mindestens zwei Pole auf.In one embodiment of the invention, the electric motor has at least two poles.

In einer Ausführungsform der Erfindung weist der Rotor mindestens ein Drehschwingungsdämpfungselement auf. Dadurch kann der Sicherheitsfaktor des Getriebes kleiner ausgelegt werden.In one embodiment of the invention, the rotor has at least one torsional vibration damping element. As a result, the safety factor of the transmission can be made smaller.

In einer Ausführungsform der Erfindung ist der Elektromotor mittels eines Gebläses gekühlt, insbesondere luftgekühlt, wobei in einer Ausführungsform der Elektromotor direkt (selbst) mittels des Gebläses gekühlt wird und in einer anderen, aber damit kombinierbaren Ausführungsform der Elektromotor indirekt gekühlt wird, indem ein den Elektromotor beinhaltendes Gehäuse mittels des Gebläses gekühlt wird.In one embodiment of the invention, the electric motor is cooled by means of a blower, in particular air-cooled, wherein in one embodiment the electric motor is cooled directly (by itself) by means of the blower and in another, but combinable embodiment, the electric motor is indirectly cooled by the electric motor housing is cooled by means of the blower.

In einer Ausführungsform der Erfindung ist der Elektromotor indirekt gekühlt, indem ein den Elektromotor beinhaltendes Gehäuse durch ein flüssiges Kühlmittel gekühlt wird.In one embodiment of the invention, the electric motor is indirectly cooled by cooling a casing containing the electric motor by a liquid coolant.

In einer Ausführungsform der Erfindung weist die Getriebeanordnung ein Kühlsystem auf, und der Elektromotor weist ein damit thermisch verbundenes Kühlsystem auf. Dadurch kann das Gesamtkühlsystem einfacher gestaltet werden. Beispielsweise kann das identische Kühlmittel zur Kühlung sowohl der Getriebeanordnung als auch des Elektromotors verwendet werden; insbesondere kann dieses auch noch als Schmiermittel für die Getriebeanordnung dienen.In one embodiment of the invention, the gear assembly includes a cooling system, and the electric motor has a cooling system thermally connected thereto. This makes the overall cooling system easier to design. For example, the identical coolant can be used to cool both the gearbox assembly and the electric motor; In particular, this can also serve as a lubricant for the gear assembly.

In einer Ausführungsform der Erfindung weist der Elektromotor ein Kühlsystem auf, das in geschlossenem Kreislauf ein fluides (also flüssiges oder gasförmiges) Kühlmittel beinhaltet, welches mittels eines Wärmetauschers Wärme an ein weiteres fluides Kühlmittel abgeben kann. Dadurch kann der Elektromotor besonders effizient gekühlt werden.In one embodiment of the invention, the electric motor has a cooling system which includes in a closed circuit a fluid (ie liquid or gaseous) coolant which can release heat to another fluid coolant by means of a heat exchanger. As a result, the electric motor can be cooled particularly efficiently.

In einer Ausführungsform der Erfindung weist die Getriebeanordnung eine Stirnradanordnung auf. Dies kann besonders vorteilhaft sein im Falle eines extzentrisch angeordneten Elektromotors, also eines Elektromotors mit einer Rotorachse, die nicht mit der Rotationsachse der Mahlschüssel zusammenfällt.In one embodiment of the invention, the gear arrangement has a spur gear arrangement. This can be particularly advantageous in the case of an eccentrically arranged electric motor, ie an electric motor with a rotor axis, which does not coincide with the axis of rotation of the grinding bowl.

In einer Ausführungsform der Erfindung weist die Getriebeanordnung ein Planetengetriebe auf.In one embodiment of the invention, the gear arrangement has a planetary gear.

In einer Ausführungsform der Erfindung weist das Planetengetriebe eine vertikal verlaufende Zentralachse auf.In one embodiment of the invention, the planetary gear has a vertically extending central axis.

In einer Ausführungsform der Erfindung weist das Planetengetriebe eine Zentralachse auf, die der Rotationsachse der Mahlschüssel entspricht.In one embodiment of the invention, the planetary gear has a central axis which corresponds to the axis of rotation of the grinding bowl.

In einer Ausführungsform der Erfindung weist das Planetengetriebe eine Zentralachse auf, die der Rotorachse des Elektromotors entspricht.In one embodiment of the invention, the planetary gear has a central axis which corresponds to the rotor axis of the electric motor.

In einer Ausführungsform der Erfindung weist die Getriebeanordnung ein mehrstufiges, insbesondere ein zweistufiges Planetengetriebe auf. Die Planetengetriebe können mit oder ohne Lastverzweigung gekoppelt sein.In one embodiment of the invention, the gear arrangement has a multi-stage, in particular a two-stage planetary gear. The planetary gear can be coupled with or without load branching.

In einer Ausführungsform ist der Elektromotor in demselben Gehäuse angeordnet wie weitere Teile der Schwerlastantriebsanordnung, insbesondere wie die Getriebeanordnung.In one embodiment, the electric motor is disposed in the same housing as other parts of the heavy duty drive assembly, in particular as the gear assembly.

Die Mühle gemäss der Erfindung weist eine Schwerlastantriebsanordnung gemäss der Erfindung auf. In einer Ausführungsform ist die Mühle eine Walzenschüsselmühle, zum Beispiel eine Zement- oder eine Kohlemühle.The mill according to the invention comprises a heavy duty drive assembly according to the invention. In one embodiment, the mill is a roller mill, for example a cement mill or a coal mill.

Weitere Ausführungsformen und Vorteile gehen aus den abhängigen Patentansprüchen und den Figuren hervor.Further embodiments and advantages will become apparent from the dependent claims and the figures.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

Im folgenden wird der Erfindungsgegenstand anhand von Ausführungsbeispielen und den beiliegenden Zeichnungen näher erläutert. Es zeigen schematisiert:

Fig. 1
eine Antriebsanordnung mit einem direkt mit einem einstufigen Planetengetriebe verbundenen Innenläufer-Elektromotor, geschnitten;
Fig. 2
eine Antriebsanordnung mit einem über eine Kupplung mit einem einstufigen Planetengetriebe verbundenen separat gehäusten Innenläufer-Elektromotor, geschnitten;
Fig. 3
eine Antriebsanordnung mit einem über eine in den Rotor integrierte Kupplung mit einem einstufigen Planetengetriebe verbundenen separat gehäusten Innenläufer-Elektromotor, geschnitten;
Fig. 4
eine Antriebsanordnung mit einem direkt mit einem mehrstufigen Planetengetriebe verbundenen Scheibenläufer-Elektromotor, geschnitten;
Fig. 5
eine Antriebsanordnung mit einem direkt mit einem mehrstufigen Planetengetriebe verbundenen Aussenläufer-Elektromotor, geschnitten;
Fig. 6
eine Antriebsanordnung mit einem exzentrisch angeordneten Aussenläufer-Elektromotor und Stirnradanordnung, geschnitten;
Fig. 7
ein Diagramm von Kühlsystemen einer Antriebsanordnung;
Fig. 8
ein Diagramm eines Kühlsystems einer Antriebsanordnung.
In the following the subject invention will be explained in more detail with reference to embodiments and the accompanying drawings. Shown schematically:
Fig. 1
a drive assembly having an internal rotor electric motor directly connected to a single stage planetary gear;
Fig. 2
a drive assembly having a separately housed internal rotor electric motor connected via a clutch to a single stage planetary gear;
Fig. 3
a drive assembly having a separately housed inner rotor electric motor connected via a rotor integrated clutch to a single stage planetary gear;
Fig. 4
a drive assembly having a pancake electric motor connected directly to a multi-stage planetary gear;
Fig. 5
a drive arrangement with an external rotor electric motor connected directly to a multi-stage planetary gear;
Fig. 6
a drive assembly with an eccentrically arranged outer rotor electric motor and spur gear, cut;
Fig. 7
a diagram of cooling systems of a drive assembly;
Fig. 8
a diagram of a cooling system of a drive assembly.

Die in den Zeichnungen verwendeten Bezugszeichen und deren Bedeutung sind in der Bezugszeichenliste zusammengefasst aufgelistet. Für das Verständnis der Erfindung nicht wesentliche Teile sind zum Teil nicht dargestellt. Die beschriebenen Ausführungsbeispiele stehen beispielhaft für den Erfindungsgegenstand und haben keine beschränkende Wirkung.The reference numerals used in the drawings and their meaning are listed in the list of reference numerals. For the understanding of the invention non-essential parts are not shown in part. The described embodiments are exemplary of the subject invention and have no limiting effect.

Wege zur Ausführung der ErfindungWays to carry out the invention

Fig. 1 zeigt schematisiert und geschnitten eine Antriebsanordnung 1 mit einem direkt mit einem einstufigen Planetengetriebe 4 verbundenen Innenläufer-Elektromotor 5. Wie auch in den anderen Figuren sind in Fig. 1 Verzahnungen nicht explizit dargestellt. Fig. 1 shows schematically and cut a drive assembly 1 with a directly connected to a single-stage planetary gear 4 internal rotor electric motor 5. As in the other figures are in Fig. 1 Gears not explicitly shown.

Die Antriebsanordnung 1 weist ein Gehäuse 6 auf, in dem der Elektromotor 5 und das Planetengetriebe 4 abgestützt sind. Der Elektromotor 5 weist einen Stator 8 und einen Rotor 7 auf. Der Rotor 7 ist in einem oberen Lager 10 und in einem unteren Lager 9 rotierbar gelagert. Stator 8 sowie das untere Lager 9 sind auf einem Bodenelement 6c des Gehäuses abgestützt, welches auf einem Fundament 3 lagert.The drive assembly 1 has a housing 6, in which the electric motor 5 and the planetary gear 4 are supported. The electric motor 5 has a stator 8 and a rotor 7. The rotor 7 is rotatably mounted in an upper bearing 10 and in a lower bearing 9. Stator 8 and the lower bearing 9 are supported on a bottom element 6 c of the housing, which supports on a foundation 3.

Der Elektromotor 5 ist in einem unteren Teilgehäuse 6a des Gehäuses 6 angeordnet, während das Planetengetriebe 4 in einem oberen Teilgehäuse 6b des Gehäuses 6 angeordnet ist. Dadurch ist das Planetengetriebe 4 auf dem unteren Teilgehäuse 6a abgestützt.The electric motor 5 is arranged in a lower part housing 6a of the housing 6, while the planetary gear 4 is arranged in an upper part housing 6b of the housing 6. As a result, the planetary gear 4 is supported on the lower part housing 6a.

Das Planetengetriebe 4 weist ein Hohlrad 12, ein Sonnenrad 11 sowie mehrere Planetenräder 13 auf. Das Sonnenrad 11 ist direkt verbunden mit dem Rotor 7 des Elektromotors 5; zwischen den beiden ist keine Kupplung vorgesehen. So sind Elektromotor 5 (genauer: Rotor 7) und Planetengetriebe 4 (genauer: Sonnenrad 11) aneinander fixiert, spielfrei miteinander verbunden. Die Rotation des Rotors 7 bewirkt somit eine unmittelbare Rotation des Sonnenrades 11, durch welche die Planetenräder 13 angetrieben werden, welche wiederum einen Abtriebsflansch 14 der Antriebsanordnung 1 antreiben. Durch die Rotation des Abtriebsflansches 14 wird ein zu einer Zementmühle gehörender Mühlenflansch 2 angetrieben.The planetary gear 4 has a ring gear 12, a sun gear 11 and a plurality of planet gears 13. The sun gear 11 is directly connected to the rotor 7 of the electric motor 5; no clutch is provided between the two. So electric motor 5 (more precisely: rotor 7) and planetary gear 4 (more precisely: sun gear 11) fixed to each other, connected to each other without play. The rotation of the rotor 7 thus causes an immediate rotation of the sun gear 11, through which the planet gears 13 are driven, which in turn a Drive output flange 14 of the drive assembly 1. Due to the rotation of the output flange 14, a mill flange 2 belonging to a cement mill is driven.

Der Elektromotor 5 weist eine Rotorachse R auf, die mit einer Zentralachse Z des Planetengetriebes 4 und einer Rotationsachse A des Mühlenflansches 2 zusammenfällt. Die Achsen A,Z,R verlaufen alle entlang der Vertikalen. Eine vertikale Koordinate ist als x bezeichnet, eine radiale Koordinate als r.The electric motor 5 has a rotor axis R, which coincides with a central axis Z of the planetary gear 4 and a rotation axis A of the mill flange 2. The axes A, Z, R all run along the vertical. A vertical coordinate is denoted by x, a radial coordinate by r.

Fig. 2 zeigt schematisch und geschnitten eine Antriebsanordnung 1 mit einem über eine Kupplung 15 mit einem einstufigen Planetengetriebe 4 verbundenen separat gehäusten Innenläufer-Elektromotor 5. Fig. 2 shows schematically and cut a drive assembly 1 with a connected via a clutch 15 with a single-stage planetary gear 4 separately housed internal rotor electric motor. 5

Die Ausführungsform von Fig. 2 entspricht weitgehend der in Fig. 1 dargestellten Ausführungsform und wird ausgehend davon beschrieben. In Fig. 2 ist der Elektromotor 5 nicht nur immerhalb des Gehäuses 6 angeordnet, sondern auch noch separat gehäust in einem leicht gebauten separaten Gehäuse 16 (Motorgehäuse 16). Weiter ist das Sonnenrad 11 nicht direkt, sondern über eine Kupplung 15, beispielsweise über eine elastische Kupplung, mit dem Elektromotor 5 verbunden.The embodiment of Fig. 2 is largely the same as in Fig. 1 illustrated embodiment and will be described starting therefrom. In Fig. 2 the electric motor 5 is not only always located half of the housing 6, but also housed separately in a slightly built separate housing 16 (motor housing 16). Next, the sun gear 11 is not directly, but via a coupling 15, for example via an elastic coupling, connected to the electric motor 5.

Wie Fig. 2 zu entnehmen ist, ist das untere Lager 9 des Rotors 7 (das eine axiale Erstreckung h hat) komplett innerhalb der axialen Erstreckung (Höhe) H des aktiven Teils des Rotors 7 angeordnet. Weiter ist die Höhe H des aktiven Teils des Rotors 7 kleiner als der Durchmesser D des Rotors 7.As Fig. 2 can be seen, the lower bearing 9 of the rotor 7 (which has an axial extent h) is completely within the axial extent (height) H of the active part of the rotor 7 is arranged. Further, the height H of the active part of the rotor 7 is smaller than the diameter D of the rotor 7.

Mit 17 ist ein in Fig. 2 nur schematisch dargestelltes Drehschwingungsdämpfungselement bezeichnet. Dieses bewirkt, dass Drehschwingungen im Rotor gedämpft werden. Dies kann zum Beispiel mittels eines Massekörpers bewirkt werden, der durch ein Dämpfungselement (beispielsweise ein Federelement) gelagert ist oder mittels eines Dämpfungsmediums (beispielsweise eine Flüssigkeit).At 17 is a in Fig. 2 only schematically illustrated torsional vibration damping element. This causes torsional vibrations in the rotor to be damped. This can be effected for example by means of a mass body which is supported by a damping element (for example a spring element) or by means of a damping medium (for example a liquid).

Fig. 3 zeigt schematisch und geschnitten eine Antriebsanordnung mit einem über eine in den Rotor integrierte Kupplung 15 mit einem einstufigen Planetengetriebe verbundenen separat gehäusten Innenläufer-Elektromotor 5. Fig. 3 shows schematically and cut a drive assembly with a separately integrated internal rotor electric motor 5 connected via a clutch 15 integrated in the rotor with a single-stage planetary gear.

Die Ausführungsform von Fig. 3 entspricht weitgehend der in Fig. 2 dargestellten Ausführungsform und wird ausgehend davon beschrieben. In Fig. 3 ist eine flexible Kupplung 15 innerhalb des Rotors 7 angeordnet. Sie wird gebildet durch das Zusammenwirken zweier Verzahnungen, von denen die eine im Rotor 7 ausgebildet ist und die andere an einem Ende einer Verlängerung des Zahnrades 11 des Planetengetriebes 4, wobei zwischen den Zähnen elastische Körper angeordnet sind, so dass eine gewünschte Flexibilität erreicht wird. Mit 25 ist eine Dichtung bezeichnet, die das den Elektromotor 5 beinhaltende untere Teilgehäuse 6a gegenüber dem die Getriebeanordnung 4 beinhaltendem oberen Teilgehäuse 6b abdichtet.The embodiment of Fig. 3 is largely the same as in Fig. 2 illustrated embodiment and will be described starting therefrom. In Fig. 3 a flexible coupling 15 is disposed within the rotor 7. It is formed by the interaction of two gears, one of which is formed in the rotor 7 and the other at one end of an extension of the gear 11 of the planetary gear 4, wherein elastic bodies are arranged between the teeth, so that a desired flexibility is achieved. Reference numeral 25 denotes a gasket which seals the lower part housing 6a enclosing the electric motor 5 with respect to the upper part housing 6b containing the gear arrangement 4.

Die Ausführungsform von Fig. 4 entspricht weitgehend der in Fig. 1 dargestellten Ausführungsform und wird ausgehend davon beschrieben. Fig. 4 zeigt schematisch und geschnitten eine Antriebsanordnung 1 mit einem direkt mit einem mehrstufigen Planetengetriebe 4 mit Leistungsverzweigung verbundenen Scheibenläufer-Elektromotor 5. Das Sonnenrad 11 des oberen Teil-Getriebes ist direkt mit dem Rotor 7 verbunden.The embodiment of Fig. 4 is largely the same as in Fig. 1 illustrated embodiment and will be described starting therefrom. Fig. 4 shows schematically and cut a drive assembly 1 with a directly with a multi-stage planetary gear 4 connected with power split pancake electric motor 5. The sun gear 11 of the upper part transmission is connected directly to the rotor 7.

Die Ausführungsform von Fig. 5 entspricht weitgehend den in Figs. 1 und 4 dargestellten Ausführungsformen und wird ausgehend davon beschrieben. Fig. 5 zeigt schematisch und geschnitten eine Antriebsanordnung 1 mit einem direkt mit einem mehrstufigen Planetengetriebe 4 verbundenen Aussenläufer-Elektromotor 5. Das Sonnenrad 11 des unteren Teil-Getriebes ist direkt mit dem Rotor 7 verbunden.The embodiment of Fig. 5 is largely the same as in Figs. 1 and 4 illustrated embodiments and will be described starting therefrom. Fig. 5 shows schematically and cut a drive assembly 1 with a directly connected to a multi-stage planetary gear 4 external rotor electric motor 5. The sun gear 11 of the lower part transmission is connected directly to the rotor 7.

Die Ausführungsform von Fig. 6 entspricht weitgehend der in Fig. 5 dargestellten Ausführungsform und wird ausgehend davon beschrieben. Fig. 6 zeigt schematisch und geschnitten eine Antriebsanordnung 1 mit einem exzentrisch angeordneten Aussenläufer-Elektromotor 5 und Stirnradanordnung 4b. Die Stirnradanordnung 4b bildet zusammen mit einer aus zwei Planetengetrieben bestehenden Planetengetriebeanordnung 4a die Getriebeanordnung 4 der Antriebsanordnung 1. Der Elektromotor 5 hat eine Rotorachse R, die parallel zur Achse A verläuft, aber nicht mit dieser zusammenfällt. Durch die Stirnradanordnung 4b wird die Rotation des Rotors 7 auf die Planetengetriebeanordnung 4b übertragen. Der Elektromotor ist separat gehäust (Motorgehäuse 16) und weist einen hohl ausgebildeten Rotor 7 auf.The embodiment of Fig. 6 is largely the same as in Fig. 5 illustrated embodiment and will be described starting therefrom. Fig. 6 shows schematically and in section a drive assembly 1 with an eccentrically arranged outboard rotor electric motor 5 and spur gear 4b. The spur gear assembly 4b, together with a planetary gear arrangement 4a consisting of two planetary gears, forms the gear arrangement 4 of the drive assembly 1. The electric motor 5 has a rotor axis R which is parallel to the axis A but does not coincide therewith. By the spur gear 4b, the rotation of the rotor 7 is transmitted to the planetary gear assembly 4b. The electric motor is housed separately (motor housing 16) and has a hollow rotor 7.

Die in den Figs. 1 bis 6 dargestellten Ausführungsbeispiele stellen nur wenige der im Rahmen der Erfindung möglichen Varianten dar. Insbesondere wird darauf hingewiesen, dass die im Zusammenhang mit den in den Figs. 1 bis 6 dargestellten Ausführungsbeispielen diskutierten Kombinationen von Elektromotoren 5 und Getriebeanordnungen 4 nur beispielhaft sind, und dass zur Bildung einer Antriebsanordnung 1 die diskutierten Elektromotoren 5 beliebig mit den diskutierten Getriebeanordnungen 4 kombiniert werden können. Auch sind beliebige Kombinationen davon mit den im folgenden diskutierten Kühlsystemen möglich.The in the Figs. 1 to 6 illustrated embodiments represent only a few of the possible variants of the invention. In particular, it should be noted that in connection with the in the Figs. 1 to 6 illustrated combinations of electric motors 5 and gear assemblies 4 are only exemplary, and that the formation of a drive assembly 1, the discussed electric motors 5 can be arbitrarily combined with the discussed gear assemblies 4. Also, any combinations thereof are possible with the cooling systems discussed below.

Fig. 7 zeigt stark schematisiert ein Diagramm von Kühlsystemen einer Antriebsanordnung, beispielsweise gemäss einer der zuvor beschriebenen. Der Elektromotor 5 weist einen geschlossenen Kühlkreislauf 20 auf, der mit einem Kühlfluid 22, beispielsweise Wasser oder ein Gas, befüllt ist. Weiter weist die Getriebeanordnung 4 (z.B. ein Planetengetriebe 4) einen geschlossenen Kühlkreislauf 19 auf, der mit einem Kühlfluid 21 befüllt ist. Die beiden Kühlkreisläufe 19,20 sind thermisch gekoppelt, beispielsweise über einen Wärmetauscher 18. Fig. 7 shows a highly schematic diagram of cooling systems of a drive assembly, for example according to one of the previously described. The electric motor 5 has a closed cooling circuit 20, which is filled with a cooling fluid 22, for example water or a gas. Furthermore, the gear arrangement 4 (eg a planetary gear 4) has a closed cooling circuit 19, which is filled with a cooling fluid 21. The two cooling circuits 19, 20 are thermally coupled, for example via a heat exchanger 18.

Fig. 8 zeigt in gleicher Weise wie Fig. 7 stark schematisiert ein Diagramm eines Kühlsystems einer Antriebsanordnung, beispielsweise gemäss einer der zuvor beschriebenen. In diesem Fall bilden der Kühlkreislauf der Getriebeanordnung 4 und der Kühlkreislauf des Elektromotors 5 einen gemeinsamen Kühlkreislauf 24. Somit wird das identische Kühlfluid 23 zur Kühlung sowohl der Getriebeanordnung 4 als auch des Elektromotors 5 verwendet. Fig. 8 shows in the same way as Fig. 7 highly schematic diagram of a cooling system of a drive assembly, for example according to one of the previously described. In this case, the cooling circuit of the gear assembly 4 and the cooling circuit of the electric motor 5 form a common cooling circuit 24. Thus, the identical cooling fluid 23 is used to cool both the gear assembly 4 and the electric motor 5.

Sowohl in der Ausführungsform gemäss Fig. 7 als auch in der Ausführungsform gemäss Fig. 8 dient das zur Kühlung der Getriebeanordnung 4 verwendete Kühlfluid 21 bzw. 23 auch als Schmiermittel für die Getriebeanordnung 4.Both in the embodiment according to Fig. 7 as well as in the embodiment according to Fig. 8 The cooling fluid 21 or 23 used for cooling the gear arrangement 4 also serves as lubricant for the gear arrangement 4.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Antriebsanordnung, SchwerlastantriebsanordnungDrive arrangement, heavy duty drive arrangement
22
MühlenflanschMühlenflansch
33
Fundamentfoundation
44
Getriebeanordnungtransmission assembly
4a4a
PlanetengetriebeanordnungPlanetary gear assembly
4b4b
StirnradgetriebeanordnungStirnradgetriebeanordnung
55
Elektromotorelectric motor
66
Gehäusecasing
6a6a
unteres Teilgehäuselower part housing
6b6b
oberes Teilgehäuseupper part housing
6c6c
Bodenelement, BodenplattenelementFloor element, floor plate element
77
Rotorrotor
88th
Statorstator
99
Lagercamp
1010
Lagercamp
1111
Sonnenradsun
1212
Hohlradring gear
1313
Planetenradplanet
1414
Abtriebsflanschoutput flange
1515
Kupplungclutch
1616
Motorgehäusemotor housing
1717
DrehschwingungsdämpfungselementTorsional vibration damping element
1818
Wärmetauscherheat exchangers
1919
KühlkreislaufCooling circuit
2020
KühlkreislaufCooling circuit
2121
Kühlfluidcooling fluid
2222
Kühlfluidcooling fluid
2323
Kühlfluidcooling fluid
2424
KühlkreislaufCooling circuit
2525
Dichtungpoetry
AA
Achse, VertikaleAxis, vertical
DD
Durchmesserdiameter
hH
Höhe, vertikale ErstreckungHeight, vertical extent
HH
Höhe, vertikale ErstreckungHeight, vertical extent
rr
radiale Koordinateradial coordinate
RR
Achse, RotorachseAxis, rotor axis
xx
axiale Koordinate, vertikale Koordinate Z Achse, Zentralachseaxial coordinate, vertical coordinate Z axis, central axis

Claims (18)

  1. Heavy-duty drive arrangement (1) for a mill having a grinding bowl (2) that is rotatable about the vertical (A), having a housing (6), an electric motor (5) and a transmission arrangement (4) which is arranged in the housing (6) and supported on the housing (6) and via which the grinding bowl (2) can be driven by means of the electric motor (5), wherein the electric motor (5) is arranged beneath the transmission arrangement (4), characterized in that the electric motor (5) is integrated into the housing (6).
  2. Arrangement (1) according to Claim 1, characterized in that the electric motor (5) is supported on the housing (6).
  3. Arrangement (1) according to Claim 1 or Claim 2, characterized in that the housing (6) has a base element (6c) and the electric motor (5) is supported on the base element (6c).
  4. Arrangement (1) according to one of the preceding claims, characterized in that the electric motor (5) is arranged in a motor housing (16) which is arranged within the housing (6) of the heavy-duty drive arrangement (1).
  5. Arrangement (1) according to one of the preceding claims, characterized in that the electric motor (5) has a rotor (7) which is connected to a wheel (11) of the transmission arrangement (4) via a coupling (15).
  6. Arrangement (1) according to Claim 5, characterized in that the coupling (15) has a toothing which is formed in the rotor (7).
  7. Arrangement (1) according to Claim 5 or Claim 6, characterized in that the wheel (11) of the transmission arrangement (4) has an extension in the direction of the electric motor (5), the end of said extension being toothed and engaging in a toothing formed in the rotor (7).
  8. Arrangement (1) according to one of Claims 5 to 7, characterized in that the coupling (15) is arranged within the rotor (7).
  9. Arrangement (1) according to one of Claims 5 to 8, characterized in that the coupling (15) is an elastic coupling.
  10. Arrangement (1) according to one of Claims 1 to 4, characterized in that the electric motor (5) has a rotor (7) which is connected to a wheel (11) of the transmission arrangement (4) without a coupling.
  11. Arrangement (1) according to one of the preceding claims, characterized in that the housing (6) has a partial housing (6a) in which the electric motor (5) is arranged, and also a further partial housing (6b) in which the transmission arrangement (4) is arranged.
  12. Arrangement (1) according to Claim 11, characterized in that the transmission arrangement (4) is supported on the partial housing (6a) of the electric motor (5).
  13. Arrangement (1) according to one of the preceding claims, characterized in that, with regard to a vertical coordinate (x), at least a part of at least one bearing (9) of the rotor (7) is arranged within the region of extent (H) of the active region of the rotor (7).
  14. Arrangement (1) according to one of the preceding claims, characterized in that the rotor (7) has a diameter (D) which is greater than the vertical extent (H) of the active part of the rotor (7).
  15. Arrangement (1) according to one of the preceding claims, characterized in that the transmission arrangement (4) has a cooling system (19) and the electric motor (5) has a cooling system (20) thermally connected thereto.
  16. Arrangement (1) according to one of the preceding claims, characterized in that the electric motor (5) has a cooling system (20) which contains a fluid coolant (22) in a closed circuit, said coolant (22) being able to transfer heat to a further fluid coolant (21) by means of a heat exchanger (18).
  17. Arrangement (1) according to one of the preceding claims, characterized in that the transmission arrangement (4) has a multi-stage planetary gear mechanism.
  18. Mill, in particular a bowl mill crusher, having a heavy-duty drive arrangement (1) according to one of the preceding claims.
EP08803156.2A 2008-08-22 2008-08-22 Heavy-duty drive arrangement and mill driven by the same Active EP2323771B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2008/060991 WO2010020287A1 (en) 2008-08-22 2008-08-22 Heavy-duty drive arrangement and mill driven by the same

Publications (3)

Publication Number Publication Date
EP2323771A1 EP2323771A1 (en) 2011-05-25
EP2323771B1 true EP2323771B1 (en) 2012-04-18
EP2323771B2 EP2323771B2 (en) 2016-12-14

Family

ID=40577775

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08803156.2A Active EP2323771B2 (en) 2008-08-22 2008-08-22 Heavy-duty drive arrangement and mill driven by the same

Country Status (14)

Country Link
US (1) US8678307B2 (en)
EP (1) EP2323771B2 (en)
JP (1) JP5683465B2 (en)
KR (1) KR20110059619A (en)
CN (1) CN102186592B (en)
AT (1) ATE553847T1 (en)
BR (1) BRPI0823037A2 (en)
CA (1) CA2734784C (en)
DK (1) DK2323771T3 (en)
EG (1) EG26414A (en)
MA (1) MA32649B1 (en)
MX (1) MX2011001952A (en)
RU (1) RU2523017C2 (en)
WO (1) WO2010020287A1 (en)

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DK177932B1 (en) * 2013-12-20 2015-01-19 Smidth As F L Drive arrangement for a mill

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EP2413483A1 (en) * 2010-07-30 2012-02-01 Siemens Aktiengesellschaft Electric drive device for an aircraft
EP2457663B1 (en) 2010-11-29 2014-01-01 Siemens Aktiengesellschaft Gear motor of a mill drive system
ES2429026T3 (en) * 2011-02-24 2013-11-12 Siemens Aktiengesellschaft Gear motor for a mill drive system
EP2508754B1 (en) 2011-04-04 2016-03-30 Siemens Aktiengesellschaft Drive system for a wind turbine
CN103597713A (en) * 2011-04-04 2014-02-19 Fl史密斯公司 Heavy duty mill
DE102011079555B4 (en) * 2011-07-21 2020-12-24 Renk Ag Drive arrangement for a vertical roller mill
FR2979838B1 (en) * 2011-09-09 2016-01-15 Cie Engrenages Et Reducteurs Messian Durand VERTICAL MILL DRIVE WITH SEVERAL MAIN DRIVINGS
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CA2871167C (en) 2012-04-25 2020-08-04 Desch Antriebstechnik Gmbh & Co. Kg Driving device and work machine device
WO2014056229A1 (en) * 2012-10-14 2014-04-17 Yuan Dejun Improved structure of raymond pulverizer
US10335797B2 (en) * 2013-07-08 2019-07-02 Flsmidth A/S Heavy duty drive arrangement and mill
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Also Published As

Publication number Publication date
CN102186592A (en) 2011-09-14
RU2011110524A (en) 2012-09-27
DK2323771T3 (en) 2012-07-16
CA2734784C (en) 2015-04-14
EP2323771B2 (en) 2016-12-14
US20110147508A1 (en) 2011-06-23
WO2010020287A1 (en) 2010-02-25
MA32649B1 (en) 2011-09-01
MX2011001952A (en) 2011-04-05
EG26414A (en) 2013-10-22
EP2323771A1 (en) 2011-05-25
CA2734784A1 (en) 2010-02-25
KR20110059619A (en) 2011-06-02
RU2523017C2 (en) 2014-07-20
ATE553847T1 (en) 2012-05-15
CN102186592B (en) 2014-12-03
US8678307B2 (en) 2014-03-25
JP5683465B2 (en) 2015-03-11
JP2012500714A (en) 2012-01-12
BRPI0823037A2 (en) 2015-07-28

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