CN102716780B - Combined stator/rotor permanent-magnet outer rotor motor directly-driven vertical mill millstone - Google Patents
Combined stator/rotor permanent-magnet outer rotor motor directly-driven vertical mill millstone Download PDFInfo
- Publication number
- CN102716780B CN102716780B CN201210219269.XA CN201210219269A CN102716780B CN 102716780 B CN102716780 B CN 102716780B CN 201210219269 A CN201210219269 A CN 201210219269A CN 102716780 B CN102716780 B CN 102716780B
- Authority
- CN
- China
- Prior art keywords
- rotor
- split
- stator core
- vertical mill
- piece
- 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
Links
- 238000000227 grinding Methods 0.000 claims abstract description 24
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 26
- 241000239290 Araneae Species 0.000 claims description 17
- 230000002706 hydrostatic effect Effects 0.000 claims description 13
- 238000009434 installation Methods 0.000 claims description 11
- 210000004907 gland Anatomy 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract 1
- 230000009347 mechanical transmission Effects 0.000 abstract 1
- 238000003032 molecular docking Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000000498 ball milling Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention discloses a combined stator/rotor permanent-magnet outer rotor motor directly-driven vertical mill millstone which integrates a driving motor and an ore grinding vertical mill millstone so as to realize the efficient gear-free direct driving of the vertical mill millstone. The driving motor is made into a stubby outer rotor vertical structure; the millstone can be directly arranged on a rotor; a stator core is decomposed into a plurality of split stator core blocks with completely same electromagnetic parameters and mechanical structures for independent operation; and the split stator core blocks can be respectively controlled by a plurality of small and medium size low-voltage frequency converters. The rotor is of a split splicing structure; and a base step and side walls are manufactured via a split manner. During the assembling, the stator core is arranged firstly, then the rotor is arranged and finally a permanent magnet is arranged by using a special tool. During the maintenance, each split rotor unit and each split stator core block can be independently dismounted along the radial direction. The combined stator/rotor permanent-magnetic outer rotor motor directly-driven vertical mill millstone provided by the invention is capable of fundamentally solving the defect that the traditional mechanical transmission systems are long in transmission chain, large in volume and heavy in weight and can be widely applied to the technology of large-scale vertical mill millstones.
Description
Technical field
The invention belongs to a kind of mechanized equipment, particularly a kind of combined type stator/rotor permanent magnet outer rotor motor directly drives 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.
But 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 the utility model patent supporting structure of the 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, improve 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 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.
Summary of the invention
Goal of the invention:
The present invention proposes a kind of combined-stator permanent-magnetic outer rotor 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.Compared with inner rotor core, there is rotary inertia large, stability of rotation, structure such as simplifies more at the feature.
Technical scheme:
A kind of combined type stator/rotor permanent magnet outer rotor motor directly drives grinding disc of vertical mill, it is characterized in that: drive motors is made to short-thick type vertical structure, the main drive that combined type stator/rotor permanent magnet outer rotor motor directly drives grinding disc of vertical mill is radially provided with locating shaft from inside to outside successively, pedestal sidewall, stator core, segmental rotor piece, magnetic shield and rotor field spider, stator core is fixed on pedestal step, major diameter hydrostatic bearing is bolted on pedestal, rotor field spider is fixed on major diameter hydrostatic bearing, rotor gland is connected with locating shaft by alignment bearing, mill is directly fixed on rotor gland, the rotation of rotor rotor driven gland passes to mill 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, by tenon and tongue-and-groove docking; Meanwhile, each split-type stator core piece yoke portion both sides also have tongue-and-groove, by tenon and tongue-and-groove docking.
Each split-type stator core piece electromagnetic parameter and frame for movement is just the same and can independent operating.
Rotor adopts split-type splicing structure, and by the assembled moulding of split-type rotor unit, 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.
The center correspondence of major diameter hydrostatic bearing is directly over rotor field spider.
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 the installation of stator core, each split-type stator core piece is lifting successively along the circumferential direction; Carry out the installation of rotor, each split-type rotor unit is along the circumferential direction installed successively again; Treat that the whole alignings of rotor have located, finally carry out the installation of permanent magnet.
When maintenance, each split-type rotor unit and split-type stator core piece all can radially be dismantled separately.
Advantage and effect:
The present invention proposes a kind of combined-stator permanent-magnetic outer rotor motor direct driving grinding disc of vertical mill, tool has the following advantages:
Low speed large torque moment permanent-magnet synchronous motor directly drives grinding disc of vertical mill, realizes motor and mechanized equipment integrated design.Adopt outer-rotor structure that mill is directly fixed on rotor, system architecture is simplified more.Rotor all adopts splitted structure, replaces trouble unit while being easy to install and maintain, fundamentally changes 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.
brief description of the drawings:
Fig. 1 the present invention is the structural representation of combined-stator permanent-magnetic outer rotor motor direct driving grinding disc of vertical mill.
Fig. 2 is split-type rotor unit and split-type stator core piece scheme of installation.
Description of reference numerals:
1. pedestal sidewall, 2. fastening bolt, 3. pedestal step, 4. stator core, 5. pedestal, 6. major diameter hydrostatic bearing, 7. segmental rotor piece, 8. magnetic shield, 9. rotor field spider, 10. mill, 11. rotor glands, 12. locating shafts, 13. alignment bearings, 14. permanent magnets, 15. baffle plates, 16. split-type rotor units, 17. split-type stator core pieces, 18. tongue-and-grooves.
detailed description of the invention:
Below in conjunction with accompanying drawing, the present invention is described further:
The present invention is that a kind of combined type stator/rotor permanent magnet outer rotor motor directly drives 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 5, the main drive of combined type stator/rotor permanent magnet motor direct driving grinding disc of vertical mill is radially provided with locating shaft 12 from inside to outside successively, pedestal sidewall 1, stator core 4, segmental rotor piece 7, magnetic shield 8 and rotor field spider 9, stator core 4 is fixed on pedestal step 3, major diameter hydrostatic bearing 6 is bolted on pedestal 5, rotor field spider 9 is fixed on major diameter hydrostatic bearing 6, rotor gland 11 is connected with locating shaft 12 by alignment bearing 13, mill 10 is directly fixed on rotor gland 11, last rotor rotor driven gland 11 rotates moment of torsion is passed to mill 10.
Stator core 4 is by split-type stator core piece 17 assembled formations, and split-type stator core piece 17 is fitted on pedestal step 3 by fastening bolt 2; In iron core piece yoke portion's cylindrical and pedestal sidewall 1 inner circle, have tongue-and-groove 18, by tenon and tongue-and-groove docking, 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 docking, bear the tangential pulling force of motor.
The electromagnetic parameter of each split-type stator core piece 17 and frame for movement is just the same and can independent operating, can be powered respectively by multiple middle-size and small-size low voltage frequency converters, thereby realize the control of the large motor low-pressure high-power of MW class.
Rotor also adopts split-type splicing structure, and by the assembled moulding of split-type rotor unit 16, segmental rotor piece 7 is fixed by screws on rotor field spider 9, between rotor field spider 9 and segmental rotor piece 7, magnetic shield 8 is housed; Baffle plate 15 is equipped with between adjacent segmental rotor piece 7, permanent magnet 14 is installed, and permanent magnet 14 two ends and are prevented permanent magnet 14 play vertically; Permanent magnet 14 adopts the built-in cutting orientation structure of rectangular block.
12 mill center position-limiting actions of locating shaft.
The center correspondence of major diameter hydrostatic bearing 6, directly over rotor field spider 9, ensures that the geometric center of rotor field spider 9, major diameter hydrostatic bearing 6 and mill 10 overlaps, so that pedestal sidewall 1 bears the vertical pressure of mill 10.
Pedestal step 3 and pedestal sidewall 1 all adopt split production, and 17 numbers of its concrete split number and split-type stator core piece are identical.
When assembling, first carry out the installation of stator core 4, each split-type stator core piece 17 is lifting successively along the circumferential direction, is formed a whole by pedestal sidewall 1 inner arc surface and pedestal step 3 horizontal plane location; Carry out the installation of rotor, each split-type rotor unit 16 is along the circumferential direction installed successively again, is fixedly formed a whole by major diameter hydrostatic bearing 6 step location and bolt; Treat that the whole alignings of rotor have located, finally carry out the installation of permanent magnet 14.
When maintenance, can radially dismantle separately each split-type rotor unit 16 and split-type stator core piece 17, the convenient trouble unit of replacing in time.
Claims (1)
1. a combined type stator/rotor permanent magnet outer rotor motor directly drives grinding disc of vertical mill, it is characterized in that: drive motors is made to short-thick type vertical structure, the main drive that combined type stator/rotor permanent magnet outer rotor motor directly drives grinding disc of vertical mill is radially provided with locating shaft (12) from inside to outside successively, pedestal sidewall (1), stator core (4), segmental rotor piece (7), magnetic shield (8) and rotor field spider (9), stator core (4) is fixed on pedestal step (3), major diameter hydrostatic bearing (6) is bolted on pedestal (5), rotor field spider (9) is fixed on major diameter hydrostatic bearing (6), rotor gland (11) is connected with locating shaft (12) by alignment bearing (13), mill (10) is directly fixed on rotor gland (11), rotor rotor driven gland (11) rotation passes to mill (10) moment of torsion, stator core (4) is by split-type stator core piece (17) assembled formation, each split-type stator core piece (17) electromagnetic parameter and frame for movement is just the same and can independent operating, powered respectively by multiple middle-size and small-size low voltage frequency converters, thereby realize the control of the large motor low-pressure high-power of MW class, rotor adopts split-type splicing structure, and by the assembled moulding of split-type rotor unit (16), it is upper that segmental rotor piece (7) is fixed by screws in rotor field spider (9), between rotor field spider (9) and segmental rotor piece (7), magnetic shield (8) is housed, permanent magnet (14) is installed between adjacent segmental rotor piece (7), and baffle plate (15) is equipped with at permanent magnet (14) two ends, permanent magnet (14) adopts the built-in cutting orientation structure of rectangular block, the center correspondence of major diameter hydrostatic bearing (6) is directly over rotor field spider (9), pedestal step (3) and pedestal sidewall (1) all adopt split production, and its concrete split number is identical with split-type stator core piece (17) piece number, when assembling, first carry out the installation of stator core (4), each split-type stator core piece (17) is lifting successively along the circumferential direction, carry out the installation of rotor, each split-type rotor unit (16) is along the circumferential direction installed successively again, treat that the whole alignings of rotor have located, finally carry out the installation of permanent magnet (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210219269.XA CN102716780B (en) | 2012-06-29 | 2012-06-29 | Combined stator/rotor permanent-magnet outer rotor motor directly-driven vertical mill millstone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210219269.XA CN102716780B (en) | 2012-06-29 | 2012-06-29 | Combined stator/rotor permanent-magnet outer rotor motor directly-driven vertical mill millstone |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102716780A CN102716780A (en) | 2012-10-10 |
| CN102716780B true CN102716780B (en) | 2014-12-03 |
Family
ID=46942725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210219269.XA Active CN102716780B (en) | 2012-06-29 | 2012-06-29 | Combined stator/rotor permanent-magnet outer rotor motor directly-driven vertical mill millstone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102716780B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2546860C1 (en) * | 2013-11-29 | 2015-04-10 | Рустам Сагитович Аипов | Milling device |
| CN103887939A (en) * | 2014-04-11 | 2014-06-25 | 张学义 | Permanent magnet and electromagnetism mixed excitation hub driving motor rotor producing method |
| CN104190507A (en) * | 2014-09-04 | 2014-12-10 | 河南工业大学 | Self-driven rasping machine |
| CN104492556A (en) * | 2014-12-18 | 2015-04-08 | 高伟 | Vertical ball mill with embedded adjustable-speed motor |
| JP5951897B1 (en) * | 2015-02-23 | 2016-07-13 | 成田 憲治 | Synchronous motor |
| CN106382358B (en) * | 2016-08-19 | 2018-10-16 | 重庆齿轮箱有限责任公司 | A kind of roller mill speed reducer |
| CN106130290A (en) * | 2016-08-31 | 2016-11-16 | 哈尔滨三跃驱动技术股份有限公司 | Annular permanent magnet gearless ball mill direct driving motor |
| CN108452937A (en) * | 2018-01-31 | 2018-08-28 | 湖北环电磁装备工程技术有限公司 | The screw washer that no frame permanent magnet synchronous motor directly drives |
| CN109873536A (en) * | 2019-03-31 | 2019-06-11 | 横店集团英洛华电气有限公司 | Servo rotor piece splices auxiliary device |
| CN113098209B (en) | 2019-12-23 | 2022-12-27 | 新疆金风科技股份有限公司 | Motor assembling method and fixing device |
| CN113019595A (en) * | 2021-02-03 | 2021-06-25 | 河南全新机电设备有限公司 | Rotor and stator supporting and limiting mechanism of mill |
| US11692856B1 (en) | 2022-06-03 | 2023-07-04 | Nidec Motor Corporation | Rotary encoder shaft clamp |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2888726Y (en) * | 2006-02-24 | 2007-04-11 | 哈尔滨工业大学 | PM motor with plug-in internal stator |
| CN101516514A (en) * | 2006-09-14 | 2009-08-26 | 西门子公司 | Mill for milling rough, stone-like bulk material with parallel to the axis drive |
| CN102130537A (en) * | 2011-02-16 | 2011-07-20 | 谌湛 | Electric direct transmission technology of high-power mechanical equipment with low rotating speed |
| EP2457663A1 (en) * | 2010-11-29 | 2012-05-30 | Siemens Aktiengesellschaft | Gear motor for a mill drive system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007007557A1 (en) * | 2007-02-15 | 2008-08-21 | Siemens Ag | Recycling machine, especially crusher |
-
2012
- 2012-06-29 CN CN201210219269.XA patent/CN102716780B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2888726Y (en) * | 2006-02-24 | 2007-04-11 | 哈尔滨工业大学 | PM motor with plug-in internal stator |
| CN101516514A (en) * | 2006-09-14 | 2009-08-26 | 西门子公司 | Mill for milling rough, stone-like bulk material with parallel to the axis drive |
| EP2457663A1 (en) * | 2010-11-29 | 2012-05-30 | Siemens Aktiengesellschaft | Gear motor for a mill drive system |
| CN102130537A (en) * | 2011-02-16 | 2011-07-20 | 谌湛 | Electric direct transmission technology of high-power mechanical equipment with low rotating speed |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102716780A (en) | 2012-10-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102716780B (en) | Combined stator/rotor permanent-magnet outer rotor motor directly-driven vertical mill millstone | |
| CN102716785B (en) | Direct driving vertical mill millstone for combined fixed rotor permanent-magnet electric motor | |
| CN201934324U (en) | Permanent magnetic levitation axial electric pump | |
| CN202004600U (en) | Magnetic gear based disc type composite motor with low speed and large torque | |
| CN101973479B (en) | Ultra-high-speed heavy-loading outer-rotor permanent magnet synchronous traction machine | |
| CN102513191B (en) | Center drive direct-driven system of low-speed and large-torque permanent magnet motor of ball mill | |
| CN102447376A (en) | Magnetic gear and magnetic transmission device | |
| CN112871323B (en) | Permanent magnet motor direct-drive vertical mill with vibration damping mechanism | |
| CN102974474A (en) | Ultra centrifuge | |
| CN109038950A (en) | A kind of synchronous permanent-magnet motor roller using electromagnetic direct-drive technology | |
| CN201901504U (en) | Ultra high-speed and high load capacity permanent magnet synchronous traction machine with outer rotor | |
| CN201254419Y (en) | Asynchronous gearless traction machine of household elevator | |
| CN214811362U (en) | Permanent magnet motor direct-drive vertical mill | |
| CN114825690A (en) | Gearless direct-drive annular permanent magnet synchronous motor for ball mill | |
| CN113659798A (en) | Controllable integrated magnetic gear box for high-power wind driven generator | |
| CN1485139A (en) | Magnetic suspension pattern steel ball coal mill | |
| CN202140314U (en) | Permanent-magnet straight-linkage type screw compressor | |
| CN211819826U (en) | Mud pump driven by large-torque permanent magnet synchronous motor | |
| CN101092955A (en) | Motor driven pumping unit with two dish surfaces | |
| CN218339928U (en) | Permanent magnet motor direct-drive vertical mill with bidirectional load buffer device | |
| CN109274247A (en) | A kind of permanent-magnet variable-speed case | |
| CN102716855A (en) | Direct driving powder concentrator of vertical mill low-speed great-torque permanent-magnet electric motor and powder concentrating method | |
| CN2858941Y (en) | Direct-driven oil pumping unit for permanent magnet disk motor | |
| CN2850115Y (en) | Direct driven screw pump motor | |
| CN109999959A (en) | Electromagnetic direct-drive heavy type hammer mill |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HEBEI NEWSTAR ELECTRIC MOTOR CO., LTD. Free format text: FORMER OWNER: FENG GUIHONG Effective date: 20150814 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150814 Address after: 052160, Hebei District, Shijiazhuang City, Gaocheng Province Town Industrial Park Patentee after: HEBEI NEWSTAR ELECTRIC MOTOR Co.,Ltd. Address before: 110023 No. 287-1, Shun Shun Street, Tiexi District, Liaoning, Shenyang 231 Patentee before: Feng Guihong |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Combined stator and rotor permanent magnet external rotor motor direct drive vertical grinding disc Effective date of registration: 20220507 Granted publication date: 20141203 Pledgee: Bank of China Limited Shijiazhuang Gaocheng sub branch Pledgor: HEBEI NEWSTAR ELECTRIC MOTOR Co.,Ltd. Registration number: Y2022130000030 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230710 Granted publication date: 20141203 Pledgee: Bank of China Limited Shijiazhuang Gaocheng sub branch Pledgor: HEBEI NEWSTAR ELECTRIC MOTOR Co.,Ltd. Registration number: Y2022130000030 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Combined fixed rotor permanent magnet outer rotor motor direct drive vertical grinding disc Effective date of registration: 20230711 Granted publication date: 20141203 Pledgee: Bank of China Limited Shijiazhuang Gaocheng sub branch Pledgor: HEBEI NEWSTAR ELECTRIC MOTOR Co.,Ltd. Registration number: Y2023980048157 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |