EP2323771B2 - Schwerlastantriebsanordnung und damit angetriebene mühle - Google Patents

Schwerlastantriebsanordnung und damit angetriebene mühle Download PDF

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Publication number
EP2323771B2
EP2323771B2 EP08803156.2A EP08803156A EP2323771B2 EP 2323771 B2 EP2323771 B2 EP 2323771B2 EP 08803156 A EP08803156 A EP 08803156A EP 2323771 B2 EP2323771 B2 EP 2323771B2
Authority
EP
European Patent Office
Prior art keywords
electric motor
arrangement
rotor
housing
gear
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP08803156.2A
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German (de)
English (en)
French (fr)
Other versions
EP2323771B1 (de
EP2323771A1 (de
Inventor
Stefan Rittler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FLSmidth AS
Original Assignee
FLSmidth AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by FLSmidth AS filed Critical FLSmidth AS
Publication of EP2323771A1 publication Critical patent/EP2323771A1/de
Publication of EP2323771B1 publication Critical patent/EP2323771B1/de
Application granted granted Critical
Publication of EP2323771B2 publication Critical patent/EP2323771B2/de
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Classifications

    • 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
    • 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
    • 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 a driven 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.
  • bevel gear stages in the bearings produce very large radial and axial Forces that have to be absorbed, which entails correspondingly expensive dimensions.
  • Figs. 2 to 4 from CH 658'801 it is proposed to arrange a vertical-axis electric motor below the gearbox in a vertical roller mill.
  • the roller mill is held by means of a rack or columns, with the frame or columns 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.
  • a heavy duty drive assembly having the features of independent claim 1 and a mill defined by the features defined in claim 17.
  • 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 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 a heavy duty drive assembly for the grinding heads 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. 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 (partly 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 shaft is designed to give a certain amount of torsion allows.
  • 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 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 indirectly cooled in another, but combinable embodiment of the electric motor by an 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 arrangement has a cooling system
  • the electric motor has a cooling system thermally connected thereto. This makes the overall cooling system easier to design.
  • 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 vertical 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 arranged in the same housing as other parts of the Heavy duty drive assembly, especially 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. 10
  • 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 planetary gears 13 are driven, which in turn drive an 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 disposed within 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) 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 connected via a rotor integrated into the clutch 15 with a single-stage planetary gear separately gehausten internal rotor electric motor. 5
  • 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.
  • With 25 is designated a seal, which is the electric motor. 5 including lower part of the housing 6a relative to the gear assembly 4 including upper part of the housing 6b seals.
  • Fig. 4 shows schematically and in section a drive assembly 1 with a directly connected to a multi-stage planetary gear 4 with power split pancake electric motor 5.
  • the sun gear 11 of the upper part transmission is directly connected 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 Stirnradan onion 4b forms together with a consisting of two planetary gears planetary gear 4a Gear assembly 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 with this.
  • 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 (for example a planetary gear 4) has a closed cooling circuit 19 which is filled with a cooling fluid 21 is.
  • the two cooling circuits 19, 20 are thermally coupled, for example via a heat exchanger 18th
  • Fig. 8 shows in the same way as Fig. 7 highly schematic diagram of a cooling system of a non-inventive drive assembly.
  • 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 23 used to cool the gear assembly 4 also serves as a lubricant for the gear assembly 4.
EP08803156.2A 2008-08-22 2008-08-22 Schwerlastantriebsanordnung und damit angetriebene mühle Active EP2323771B2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2008/060991 WO2010020287A1 (de) 2008-08-22 2008-08-22 Schwerlastantriebsanordnung und damit angetriebene mühle

Publications (3)

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

Family

ID=40577775

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08803156.2A Active EP2323771B2 (de) 2008-08-22 2008-08-22 Schwerlastantriebsanordnung und damit angetriebene mühle

Country Status (14)

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

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2380666B1 (de) 2010-04-19 2013-04-17 Siemens Aktiengesellschaft Mühlenantriebssystem
EP2413483A1 (de) * 2010-07-30 2012-02-01 Siemens Aktiengesellschaft Elektrische Antriebsvorrichtung für ein Luftfahrzeug
PL2457663T3 (pl) 2010-11-29 2014-06-30 Flender Gmbh Silnik przekładniowy układu napędowego młyna
ES2429026T3 (es) * 2011-02-24 2013-11-12 Siemens Aktiengesellschaft Motor de engranaje para un sistema de accionamiento de molino
EP2695283A1 (en) * 2011-04-04 2014-02-12 FLSmidth A/S Heavy duty mill
EP2508754B1 (de) 2011-04-04 2016-03-30 Siemens Aktiengesellschaft Antriebssystem für eine Windkraftanlage
DE102011079555B4 (de) * 2011-07-21 2020-12-24 Renk Ag Antriebsanordnung für eine Vertikal-Rollenmühle
FR2979838B1 (fr) * 2011-09-09 2016-01-15 Cie Engrenages Et Reducteurs Messian Durand Entrainement de broyeur vertical a plusieurs entrainements principaux
FI126181B (en) * 2012-01-03 2016-07-29 Metso Minerals Inc Operation of rotary crushing elements
WO2013160127A1 (de) 2012-04-25 2013-10-31 Desch Antriebstechnik Gmbh & Co. Kg Antriebseinrichtung und arbeitsmaschineneinrichtung
WO2014056229A1 (zh) * 2012-10-14 2014-04-17 Yuan Dejun 雷蒙粉碎机的改进结构
US10335797B2 (en) * 2013-07-08 2019-07-02 Flsmidth A/S Heavy duty drive arrangement and mill
DK177932B1 (en) * 2013-12-20 2015-01-19 Smidth As F L Drive arrangement for a mill
DE102014008966A1 (de) * 2014-06-23 2015-12-24 Renk Aktiengesellschaft Antriebsanordnung für eine Vertikal-Rollenmühle
JP6675003B2 (ja) * 2015-11-19 2020-04-01 ロエシェ ゲーエムベーハー ミリングボウル
EP3415238B1 (de) * 2017-06-14 2020-05-27 Flender GmbH Vertikalmühlengetriebe

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BE809236Q (fr) * 1970-10-06 1974-04-16 Pfeiffer Barbarossawerke A G G Perfectionnements apportes aux moulins a cylindres
SU415042A1 (ru) * 1971-11-25 1974-02-15 Л. М. Иванов , Г. Н. Ермаков Многопоточный привод трубной мельницы
JPS5231954Y2 (da) * 1974-05-07 1977-07-21
SU871818A1 (ru) * 1979-08-31 1981-10-15 Сызранский турбостроительный завод Валкова мельница
CH658801A5 (de) * 1982-10-29 1986-12-15 Maag Zahnraeder & Maschinen Ag Walzenschuesselmuehle.
JPS59138445U (ja) * 1983-03-03 1984-09-14 株式会社神戸製鋼所 ロ−ラミル
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CH672603A5 (da) 1987-04-09 1989-12-15 Maag Zahnraeder & Maschinen Ag
JP2003251206A (ja) * 2002-02-28 2003-09-09 Kurimoto Ltd 砕砂製造用竪型ミル
JP4099009B2 (ja) * 2002-06-20 2008-06-11 日本高圧電気株式会社 粉砕機
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Also Published As

Publication number Publication date
RU2011110524A (ru) 2012-09-27
MX2011001952A (es) 2011-04-05
WO2010020287A1 (de) 2010-02-25
EP2323771B1 (de) 2012-04-18
KR20110059619A (ko) 2011-06-02
EP2323771A1 (de) 2011-05-25
MA32649B1 (fr) 2011-09-01
BRPI0823037A2 (pt) 2015-07-28
CN102186592B (zh) 2014-12-03
DK2323771T3 (da) 2012-07-16
JP5683465B2 (ja) 2015-03-11
US20110147508A1 (en) 2011-06-23
RU2523017C2 (ru) 2014-07-20
CA2734784C (en) 2015-04-14
EG26414A (en) 2013-10-22
US8678307B2 (en) 2014-03-25
JP2012500714A (ja) 2012-01-12
ATE553847T1 (de) 2012-05-15
CA2734784A1 (en) 2010-02-25
CN102186592A (zh) 2011-09-14

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