CN102716785B - Direct driving vertical mill millstone for combined fixed rotor permanent-magnet electric motor - Google Patents
Direct driving vertical mill millstone for combined fixed rotor permanent-magnet electric motor Download PDFInfo
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- CN102716785B CN102716785B CN201210219250.5A CN201210219250A CN102716785B CN 102716785 B CN102716785 B CN 102716785B CN 201210219250 A CN201210219250 A CN 201210219250A CN 102716785 B CN102716785 B CN 102716785B
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Abstract
The invention mainly relates to a direct driving vertical mill millstone for a combined fixed rotor permanent-magnet electric motor. A driving motor and an ore crushing vertical mill millstone adopt the integral integration design, and the efficient gear-free direct driving of the vertical mill millstone is realized. The driving motor is made into a short and thick type vertical structure, in addition, a stator iron core is decomposed into a plurality of split type stator iron core blocks with the same electromagnetic parameters and mechanical structures for realizing the independent operation, and a plurality of medium and small-sized low-voltage frequency converters can be adopted for respectively realizing the control. A base step and a side wall adopt the split manufacture. During the installation, the sequential hoisting is carried out in the circumference direction. During the maintenance, each split type stator iron core bock can be singly dismounted in the radial direction. A transmission shaft adopts a hollow shaft structure, a slender positioning shaft is arranged inside the transmission shaft, and the millstone center position limiting effect can be realized. The problems of redundant transmission chain, large size and heavy weight of the traditional mechanical transmission system can be fundamentally solved, and the direct driving vertical mill millstone can be widely applied to the large-scale vertical mill millstone technology.
Description
Technical field
The invention belongs to a kind of mechanized equipment, particularly a kind of combined type stator/rotor permanent magnet motor direct driving ore grinding grinding disc of vertical mill.
Background technology
In recent years, in the technological innovation with rapid changepl. never-ending changes and improvements of cement slurry, grog and slag milling technique, Vertical Mill is shown one's talent, it integrates broken, dry, grinding, sorting and conveying,, there is progressively substituting the development trend of traditional ball milling in the series of advantages such as have that output is large, unit consumption is low, intensive degree is high, floor space is little, civil engineering, freight are few.
Yet due to many reasons, Vertical Mill still exists many energy-conservation weak links at present, wherein, mill transmission is maximum power consumption parts.Vertical Mill working speed is low, and traditional asynchronous motor adds gear reduction unit transmission mode and still accounts for staple market share.Asynchronous electric engine efficiency and power factor level are low, and reduce with load factor.Decelerator makes to equip volume and weight and strengthens, and manufacture difficulty and maintenance cost increase, vibration noise aggravation, and there is leakage pollution in lubricating oil, and operational efficiency reduces.Erzhong Group (Deyang) Heavy Equipment Co., Ltd. in 2009 has successively applied for utility model patent " supporting structure of grinding disc of vertical mill (patent No.: 200920303433.9) ", " transmission of grinding disc of vertical mill and supporting structure (patent No.: 200920314658.4) ", its feature is, by adopting independently major diameter hydrostatic bearing to support mill, improved mill and born ability and the running stability of vertical load.But, still adopt conventional asynchronous to add mechanical reducer technology path, then by the transmission of the gear angle of engagement, moment of torsion passed to mill.Patent of invention by the individual application (patent No.: 201110038911.X) " the electric direct-drive technology of high-power mechanical equipment with low " in 2011, its feature is, a kind of thought of removing plant equipment transmission system middle gear decelerator of recapitulative proposition, uses the synchronous motor reaching its maturity instead and directly drives.But do not set forth concrete structure design.In addition, for the driving power of main equipment MW class, generally adopt 10kV(or 6kV) high voltage source power supply, the cost performance of electric drive system is reduced, reliability variation.The present invention is subsidized by National 863 project (SS2012AA061303).
Summary of the invention
Goal of the invention:
The present invention proposes a kind of combined type stator/rotor permanent magnet motor direct driving grinding disc of vertical mill, by drive motors and ore grinding grinding disc of vertical mill integrated design, realizes the efficient gearless of grinding disc of vertical mill and directly drives.
Technical scheme:
A kind of combined type stator/rotor permanent magnet motor direct driving grinding disc of vertical mill, it is characterized in that: drive motors is made short-thick type vertical structure, the main drive of combined type stator/rotor permanent magnet motor direct driving grinding disc of vertical mill is radially provided with locating shaft from inside to outside successively, power transmission shaft, rotor field spider, segmental rotor piece and stator core, stator core is fixed on pedestal step, power transmission shaft is connected with pedestal by thrust bearing, end cap is connected with power transmission shaft by alignment bearing, major diameter hydrostatic bearing is bolted on end cap, mill is supported on major diameter hydrostatic bearing, power transmission shaft passes to mill by runing rest moment of torsion.
Stator core is by split-type stator core piece assembled formation, and split-type stator core piece is fitted on pedestal step by fastening bolt; In iron core piece yoke portion's cylindrical and pedestal sidewall inner circle, have tongue-and-groove, each split-type stator core piece yoke portion both sides also have tongue-and-groove simultaneously, by tenon and tongue-and-groove, dock.
Each split-type stator core piece electromagnetic parameter and frame for movement is just the same and can independent operating.
Rotor is by a plurality of segmental rotor piece spicing forming types, and segmental rotor piece is fixed by screws on rotor field spider, between rotor field spider and segmental rotor piece, magnetic shield is housed; Between adjacent segmental rotor piece, permanent magnet is installed, and baffle plate is equipped with at permanent magnet two ends; Permanent magnet adopts the built-in cutting orientation structure of rectangular block.
Power transmission shaft adopts hollow shaft structure, in power transmission shaft inside, elongated locating shaft is housed.
The center correspondence of major diameter hydrostatic bearing is directly over pedestal sidewall.
Pedestal step and pedestal sidewall all adopt split production, and its concrete split number is identical with split-type stator core piece piece number.
When assembling, first carry out pedestal step, the partial installation of pedestal sidewall that each split-type stator core piece is corresponding with it; Along the circumferential direction lifting successively again; Next carries out rotor lifting; Treat that the whole alignings of rotor have located, finally carry out the installation of permanent magnet.
When maintenance, each split-type stator core piece can radially be dismantled separately.
Advantage and effect:
The present invention proposes a kind of combined type stator/rotor permanent magnet motor direct driving grinding disc of vertical mill, tool has the following advantages:
The present invention's speed large torque moment permanent-magnet synchronous motor directly drives grinding disc of vertical mill, realize motor and mechanized equipment integrated design, fundamentally change the shortcoming that traditional machine driven system driving-chain is tediously long, volume and weight is huge, can be widely applied in large-scale grinding disc of vertical mill technology.
accompanying drawing explanation:
Fig. 1 is the structural representation of combined type stator/rotor permanent magnet motor direct driving grinding disc of vertical mill of the present invention;
Fig. 2 is combined type rotor distinguish scheme of installation.
Description of reference numerals:
1. pedestal, 2. rotor field spider, 3. magnetic shield, 4. segmental rotor piece, 5. stator core, 6. pedestal step, 7. fastening bolt, 8. pedestal sidewall, 9. end cap, 10. major diameter hydrostatic bearing, 11. mills, 12. runing rests, 13. alignment bearings, 14. power transmission shafts, 15. locating shafts, 16. permanent magnets, 17. thrust bearings, 18. tongue-and-grooves, 19. split-type stator core pieces, 20. baffle plates.
the specific embodiment:
Below in conjunction with accompanying drawing, the present invention is described further:
The invention provides a kind of combined type stator/rotor permanent magnet motor direct driving grinding disc of vertical mill, by drive motors and the integrated design of ore grinding grinding disc of vertical mill, realizing the efficient gearless of grinding disc of vertical mill directly drives, as shown in Figures 1 and 2, it is characterized in that: drive motors is made to short-thick type vertical structure, directly integrated installation is on mill pedestal, and the main drive of this combined type stator/rotor permanent magnet motor direct driving grinding disc of vertical mill is radially provided with locating shaft 15, power transmission shaft 14, rotor field spider 2, segmental rotor piece 4 and stator core 5 from inside to outside successively; Stator core 5 is fixed on pedestal step 6, and power transmission shaft 14 is connected with pedestal 1 by thrust bearing 17, and supports end cap 9 is connected with power transmission shaft 14 by alignment bearing 13.Power transmission shaft 14 adopts hollow shaft structure, in power transmission shaft 14 inside, elongated locating shaft 15 is housed, and plays mill center position-limiting action.Major diameter hydrostatic bearing 10 is bolted on end cap 9, and mill 11 is supported on major diameter hydrostatic bearing 10.Major diameter hydrostatic bearing 10 center correspondence, directly over pedestal sidewall 8, guarantees that the geometric center of pedestal sidewall 8, major diameter hydrostatic bearing 10 and mill 11 overlaps, so that pedestal sidewall bears the vertical pressure of mill.Between power transmission shaft 14 and mill 11, be provided with runing rest 12, power transmission shaft 14 passes to mill 11 by runing rest 12 moment of torsion.
Stator core 5 is by split-type stator core piece 19 assembled formations, and split-type stator core piece 19 is fitted on pedestal step 6 by fastening bolt 7; In iron core piece yoke portion's cylindrical and pedestal sidewall 8 inner circles, have tongue-and-groove 18, by tenon and tongue-and-groove, dock, bear motor radial pull.Meanwhile, each split-type stator core piece yoke portion both sides also have tongue-and-groove 18, by tenon and tongue-and-groove, dock, and bear the tangential pulling force of motor.
Rotor is by a plurality of segmental rotor piece 4 spicing forming types, and segmental rotor piece 4 is fixed by screws on rotor field spider 2, between rotor field spider 2 and segmental rotor piece 4, magnetic shield 3 is housed.Between adjacent segmental rotor piece 4, permanent magnet 16 is installed, and baffle plate 20 is equipped with to prevent permanent magnet 16 play vertically in permanent magnet 16 two ends.Permanent magnet 16 adopts the built-in cutting orientation structure of rectangular block.
Pedestal step 6 and pedestal sidewall 8 all adopt split production, and 19 numbers of its concrete split number and split-type stator core piece are identical.When assembling, first complete pedestal step 6,8 partial installations of pedestal sidewall that each split-type stator core piece 19 is corresponding with it; Along the circumferential direction lifting successively again, is formed a whole by pedestal 1 horizontal plane and seam location.Next carries out rotor lifting.Treat that the whole alignings of rotor have located, finally carry out the installation of permanent magnet 16.When maintenance, can radially dismantle separately each split-type stator core piece 19, replace in time trouble unit.
The electromagnetic parameter of each split-type stator core piece 19 and frame for movement is just the same and can independent operating, and can be powered respectively by a plurality of middle-size and small-size low voltage frequency converters, thereby realize the large motor low-pressure high-power of MW class, control.
Claims (5)
1. a combined type stator/rotor permanent magnet motor direct driving grinding disc of vertical mill, it is characterized in that: drive motors is made short-thick type vertical structure, the main drive of combined type stator/rotor permanent magnet motor direct driving grinding disc of vertical mill is radially provided with locating shaft (15) from inside to outside successively, power transmission shaft (14), rotor field spider (2), segmental rotor piece (4) and stator core (5), stator core (5) is fixed on pedestal step (6), power transmission shaft (14) is connected with pedestal (1) by thrust bearing (17), end cap (9) is connected with power transmission shaft (14) by alignment bearing (13), major diameter hydrostatic bearing (10) is bolted on end cap (9), mill (11) is supported on major diameter hydrostatic bearing (10), power transmission shaft (14) passes to mill (11) by runing rest (12) moment of torsion, stator core (5) is by split-type stator core piece assembled formation, each split-type stator core piece (19) electromagnetic parameter and frame for movement is just the same and can independent operating, by a plurality of middle-size and small-size low voltage frequency converters, powered respectively, thereby realize MW class Vertical Mill drive motors low-pressure high-power, control.
2. combined type stator/rotor permanent magnet motor direct driving grinding disc of vertical mill according to claim 1, it is characterized in that: rotor is by a plurality of segmental rotor piece spicing forming types, it is upper that segmental rotor piece (4) is fixed by screws in rotor field spider (2), between rotor field spider (2) and segmental rotor piece (4), magnetic shield (3) is housed; Permanent magnet (16) is installed between adjacent segmental rotor piece, and baffle plate (20) is equipped with at permanent magnet (16) two ends; Permanent magnet (16) adopts the built-in cutting orientation structure of rectangular block.
3. a kind of combined type stator/rotor permanent magnet motor direct driving grinding disc of vertical mill according to claim 1, is characterized in that: the center correspondence of major diameter hydrostatic bearing (10) is directly over pedestal sidewall (8).
4. combined type stator/rotor permanent magnet motor direct driving grinding disc of vertical mill according to claim 1, is characterized in that: pedestal step (6) and pedestal sidewall (8) all adopt split production, and its concrete split number is identical with split-type stator core piece (19) piece number.
5. according to the combined type stator/rotor permanent magnet motor direct driving grinding disc of vertical mill described in claim 1 or 4, it is characterized in that: when assembling, first carry out pedestal step (6), pedestal sidewall (8) partial installation that each split-type stator core piece (19) is corresponding with it; Along the circumferential direction lifting successively again; Next carries out rotor lifting; Treat that the whole alignings of rotor have located, finally carry out the installation of permanent magnet (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210219250.5A CN102716785B (en) | 2012-06-29 | 2012-06-29 | Direct driving vertical mill millstone for combined fixed rotor permanent-magnet electric motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210219250.5A CN102716785B (en) | 2012-06-29 | 2012-06-29 | Direct driving vertical mill millstone for combined fixed rotor permanent-magnet electric motor |
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| Publication Number | Publication Date |
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| CN102716785A CN102716785A (en) | 2012-10-10 |
| CN102716785B true CN102716785B (en) | 2014-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210219250.5A Active CN102716785B (en) | 2012-06-29 | 2012-06-29 | Direct driving vertical mill millstone for combined fixed rotor permanent-magnet electric motor |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105119413B (en) * | 2015-09-25 | 2017-12-22 | 力博重工科技股份有限公司 | Vertical permanent magnet direct driving motor |
| CN108246808A (en) * | 2018-01-31 | 2018-07-06 | 湖北环电磁装备工程技术有限公司 | The cross wedge rolling mill roller that rimless combination type permanent-magnet synchronous motor directly drives |
| CN109950991B (en) * | 2019-05-05 | 2023-07-04 | 新疆金风科技股份有限公司 | Magnet yoke assembly, motor, wind generating set and sleeving method of motor |
| CN112421875B (en) * | 2019-08-23 | 2022-05-24 | 广东美的环境电器制造有限公司 | Air supply device and household appliance |
| CN112751462B (en) * | 2019-11-22 | 2022-01-28 | 襄阳中车电机技术有限公司 | Vertical supporting device for stator wiring |
| CN113270952B (en) * | 2021-03-27 | 2023-04-25 | 大庆虹铭科技有限公司 | Flexible driving semi-direct driving motor for oil pumping unit |
| CN113510568B (en) * | 2021-09-13 | 2022-01-11 | 中国科学院光电技术研究所 | Active smoothing method for high-gradient large-deviation aspheric element |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3658264A (en) * | 1969-11-15 | 1972-04-25 | Pfeiffer Barbarossawerke Ag Fa | Roller mill drive |
| DE10305915A1 (en) * | 2003-02-13 | 2004-08-26 | Alstom Power Boiler Gmbh | Rolling mill for e.g. dig-damp hard coal, includes driver with a ring engine that is concentric to a hollow shaft which in turn directly propels a meal plate, the shaft connected with a rotor |
| CN2888726Y (en) * | 2006-02-24 | 2007-04-11 | 哈尔滨工业大学 | PM motor with plug-in internal stator |
| CN201394477Y (en) * | 2009-05-21 | 2010-02-03 | 二重集团（德阳）重型装备股份有限公司 | Supporting structure of vertical mill tray |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006043179A1 (en) * | 2006-09-14 | 2008-03-27 | Siemens Ag | Mill for grinding coarse, stone-like bulk material with axis-parallel drive |
| DE102009012353C5 (en) * | 2009-03-09 | 2013-08-22 | ThyssenKrupp Resource Technologies AG | roller mill |
-
2012
- 2012-06-29 CN CN201210219250.5A patent/CN102716785B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3658264A (en) * | 1969-11-15 | 1972-04-25 | Pfeiffer Barbarossawerke Ag Fa | Roller mill drive |
| DE10305915A1 (en) * | 2003-02-13 | 2004-08-26 | Alstom Power Boiler Gmbh | Rolling mill for e.g. dig-damp hard coal, includes driver with a ring engine that is concentric to a hollow shaft which in turn directly propels a meal plate, the shaft connected with a rotor |
| CN2888726Y (en) * | 2006-02-24 | 2007-04-11 | 哈尔滨工业大学 | PM motor with plug-in internal stator |
| CN201394477Y (en) * | 2009-05-21 | 2010-02-03 | 二重集团（德阳）重型装备股份有限公司 | Supporting structure of vertical mill tray |
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| CN102716785A (en) | 2012-10-10 |
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Effective date of registration: 20180813 Address after: 314001 Room 917, Block B, Intelligence Building, Jiaxing Intelligent Industry Innovation Park, No. 36 Changsheng South Road, Nanhu District, Jiaxing City, Zhejiang Province Patentee after: Bo Yuan Mechatronics (Jiaxing) Co., Ltd. Address before: 110023 287-1 Xingshun Street, Tiexi District, Shenyang, Liaoning 231 Patentee before: Feng Guihong |
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Effective date of registration: 20211008 Address after: 226000 No. 885, Qingdao Road, Nantong high tech Industrial Development Zone, Nantong City, Jiangsu Province Patentee after: Bogu Technology (Nantong) Co.,Ltd. Address before: 314001 Room 917, Block B, Intelligence Building, Jiaxing Intelligent Industry Innovation Park, No. 36 Changsheng South Road, Nanhu District, Jiaxing City, Zhejiang Province Patentee before: BOYUAN ELECTROMECHANICAL (JIAXING) Co.,Ltd. |