CN105245047A - Unit magnetic pole structure of permanent magnet motor rotor - Google Patents
Unit magnetic pole structure of permanent magnet motor rotor Download PDFInfo
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- CN105245047A CN105245047A CN201510738230.2A CN201510738230A CN105245047A CN 105245047 A CN105245047 A CN 105245047A CN 201510738230 A CN201510738230 A CN 201510738230A CN 105245047 A CN105245047 A CN 105245047A
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Abstract
The invention discloses a unit magnetic pole structure of a permanent magnet motor rotor. The unit magnetic pole structure comprises a rotating shaft and a rotor core, wherein the rotor core is axially divided into a plurality of independent unit magnetic poles, magnetic steel of each unit magnetic pole is axially fixed and sealed by a core ventilation pressure plate, magnetic pole cores are fixed by stainless steel rivets, and the unit magnetic poles are connected by ventilation slot plates and ventilation slot sheets. The unit magnetic pole structure has the advantages of novel structure, good performance and convenience in process, and is suitable for a high-speed rotating motor with high power density.
Description
Technical field
The present invention relates to a kind of rotor core structure of magneto, especially a kind of permanent magnet built-in radial ventilated type rotor structure for permanent magnet motor pattern being applicable to high rotating speed, high salt fog condition, belongs to magneto technical field.
Background technology
In high speed internal rotor permanent-magnetic motor, permanent magnet is arranged in rotor core usually.Can there is certain space between permanent magnet and rotor core, the existence in these spaces can affect the firmness of permanent magnet installation, and therefore common technique pours into sealing resin in these spaces.If permanent magnet directly contacts with air in addition, surface is easily corroded, and affects magnetic property.Therefore, need to carry out secondary protection to the surface of permanent magnet.
For the magneto having Radial ventilation duct, situation is more complicated.Conventional interior permanent magnet machines, first carries out iron core laminated, then by iron core sleeve in rotating shaft, mounting magnetic steel afterwards, then seals rotor core two ends, pours into sealing resin simultaneously and just can complete secondary protection to magnet steel.For the electric machine structure having Radial ventilation duct, first will complete the installation with magnet steel that laminates of iron core, it is secondary carries out axial restraint to magnet steel, the 3rd sealing that will realize magnet steel, finally also to consider the manufacturability of installing, so just can take into account magnet steel reliability and sealing.
Summary of the invention
The object of the present invention is to provide a kind of unit field structure of permanent magnet machine rotor, adopt the structural shape of rotor unit magnetic pole, feature is magnet steel installation and removal convenience, not easy damaged, good airproof performance, unit magnetic pole is convenient to produce, and the rotor structure for the magneto of radial ventilation mode provides a kind of method for designing.
Technical scheme of the present invention is as follows:
A unit field structure for permanent magnet machine rotor, comprises rotating shaft and rotor core; Described rotor core is divided into multiple independently unit magnetic pole vertically, and each unit magnetic pole is fixed in rotating shaft; Radial ventilation groove is formed between adjacent unit magnetic pole.
Further, described unit magnetic pole is divided into the first kind unit magnetic pole and the second kind unit magnetic pole;
First kind unit magnetic pole is assembled by rotor punching, core ventilation pressing plate, ventilation channel plate, vent segment, stainless steel rivet, magnet steel, thermal expansivity glass felt and elasticity tie; Thermal expansivity glass felt is bonded in the axle head both sides of magnet steel, at magnet steel peripheral surface brush configuration glue, magnet steel is placed in the groove of the rotor punching laminated, penetrates elasticity tie, and carry out epoxy sealing; Core ventilation pressing plate and ventilation channel plate is placed respectively at the rotor punching two ends laminated, yoke portion and the teeth portion of rotor punching, core ventilation pressing plate and ventilation channel plate are circumferentially distributed with through hole equably, rotor punching, core ventilation pressing plate and ventilation channel plate are fixed with stainless steel rivet; Vent segment is welded on ventilation channel plate, and its position covers the installation site of magnet steel;
Second kind unit magnetic pole is assembled by rotor punching, core ventilation pressing plate, stainless steel rivet, magnet steel, thermal expansivity glass felt and elasticity tie; Thermal expansivity glass felt is bonded in the axle head both sides of magnet steel, at magnet steel peripheral surface brush configuration glue, magnet steel is placed in the groove of the rotor punching laminated, penetrates elasticity tie, and carry out epoxy sealing; Place core ventilation pressing plate respectively at the rotor punching two ends laminated, the yoke portion of rotor punching and core ventilation pressing plate and teeth portion are circumferentially distributed with through hole equably, rotor punching and core ventilation pressing plate are fixed with stainless steel rivet;
First kind unit magnetic pole has multiple, and the second kind unit magnetic pole only has one; Between adjacent first kind unit magnetic pole, contacted with the core ventilation pressing plate of another the first kind unit magnetic pole by the vent segment of one of them the first kind unit magnetic pole; Between first kind unit magnetic pole and the second kind unit magnetic pole, contacted with the core ventilation pressing plate of the second kind unit magnetic pole by the vent segment of the first kind unit magnetic pole.
Further, the mounting means of described unit magnetic pole in rotating shaft is: in rotating shaft, install the first kind rotor tip pole end-plate, carries out axial location by the boss in rotating shaft to the first kind rotor tip pole end-plate; Rotating shaft is installed multilayer first kind unit magnetic pole, first kind rotor tip pole end-plate is contacted with the core ventilation pressing plate of the first kind unit magnetic pole of ground floor, and the vent segment of all the other each layer first kind unit magnetic poles contacts with the core ventilation pressing plate of adjacent layer first kind unit magnetic pole; Then one deck second kind unit magnetic pole is installed in rotating shaft, the core ventilation pressing plate of the second kind unit magnetic pole is contacted with the vent segment of adjacent layer first kind unit magnetic pole; Laminate with aerostatic press; Rotating shaft is installed the second kind rotor tip pole end-plate, the second kind rotor tip pole end-plate is contacted with the core ventilation pressing plate of the second kind unit magnetic pole, arc key is welded on the second kind rotor tip pole end-plate; The difference of described first kind rotor tip pole end-plate and the second kind rotor tip pole end-plate is, the first kind rotor tip pole end-plate has radial air openings, and the second kind rotor tip pole end-plate does not have radial air openings.
Advantageous Effects of the present invention is:
1, the unit field structure of permanent magnet machine rotor of the present invention, unit magnetic pole independently makes, and easy to operate, improves reliability and the efficiency of production.
2, the unit field structure of permanent magnet machine rotor of the present invention, magnet steel axial end portion by stationary heat dilatancy glass felt, avoids core ventilation pressing plate and ventilation channel plate is directly squeezed on magnet steel, simultaneously after embedding, enhances magnet steel axial location and sealing.
3, the unit field structure of permanent magnet machine rotor of the present invention, utilizes stainless steel rivet, improves the manufacturability that unit magnetic pole makes, prevents tooth to rise, avoid eddy current loss.
4, the unit field structure of permanent magnet machine rotor of the present invention, unit magnetic pole is arranged on after in rotating shaft and laminates, and carries out axial restraint between each unit magnetic pole by ventilation channel plate, serves the integral shaft of rotor core to fixation.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Fig. 2 is unit field structure schematic diagram of the present invention.
Fig. 3 is rotor punching structure schematic diagram of the present invention.
Fig. 4 is ventilation channel plate structural representation of the present invention.
Fig. 5 is the first kind rotor tip pole end-plate structural representation of the present invention.
Fig. 6 is the second kind rotor tip pole end-plate structural representation of the present invention.
Description of reference numerals: 1, rotating shaft; 2, unit magnetic pole; 3, rotor punching; 4, core ventilation pressing plate; 5, ventilation channel plate; 6, vent segment; 7, stainless steel rivet; 8, magnet steel; 9, thermal expansivity glass felt; 10, elasticity tie; 11, the first kind rotor tip pole end-plate; 12, the second kind rotor tip pole end-plate; 13, arc key.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further.
As shown in Figure 1, the unit field structure of permanent magnet machine rotor of the present invention, mainly comprises rotating shaft 1 and rotor core two parts.Rotor core is divided into several unit magnetic poles 2 in the axial direction, and each unit magnetic pole 2 manufactures separately, is then fixed in rotating shaft 1.Radial ventilation groove is formed between adjacent unit magnetic pole 2.
As shown in Figure 2, be the structure of unit magnetic pole 2.Each unit magnetic pole 2 is independently rotor cores, convenient batch production, simultaneously easy to assembly.The composition of unit magnetic pole 2 comprises rotor punching 3, core ventilation pressing plate 4, ventilation channel plate 5 (optional), vent segment 6 (optional), stainless steel rivet 7, magnet steel 8, thermal expansivity glass felt 9 and elasticity tie 10.
Unit magnetic pole 2 is overrided to form by rotor punching 3, and unit magnetic pole 2 one end is core ventilation pressing plate 4, and the other end is core ventilation pressing plate 4 or ventilation channel plate 5.Core ventilation pressing plate 4 is identical with the structure of ventilation channel plate 5, and difference is ventilation channel plate 5 is welded with vent segment 6.Yoke portion and the teeth portion of rotor punching 3 (see Fig. 3), core ventilation pressing plate 4 and ventilation channel plate 5 (see Fig. 4) are circumferentially distributed with through hole equably, for riveting stainless steel rivet 7, to ensure the stacking factor of unit magnetic pole 2 iron core, avoid tooth to rise, play the protective action of axial restraint and sealing magnet steel 8 simultaneously.Stainless steel material selected by core ventilation pressing plate 4, ventilation channel plate 5 and rivet 7, thus avoids the generation of leakage field phenomenon.The axial length of the iron core of unit magnetic pole 2, slightly larger than the length of magnet steel 8, ensures that iron core and magnet steel 8 have certain small―gap suture in the axial direction after staking, for covering one group of thermal expansivity glass felt 9 in the axial both ends of the surface of magnet steel 8.The both sides of magnet steel 8 are installed with elasticity tie 10, the inner encapsulated epoxy resin of magnet steel 8.
The through hole alignment of core ventilation pressing plate 4 and rotor punching 3 during fabrication, first laminates by unit magnetic pole 2.Before mounting magnetic steel 8, thermal expansivity glass felt 9 is bonded in the axle head both sides of magnet steel 8, thermal expansivity glass felt 9 can need compressed or expand according to axial fitted position when assembling; At magnet steel 8 peripheral surface brush configuration glue, then magnet steel 8 one pieces of blocks are placed in the above-mentioned iron core slot laminated, penetrate elasticity tie 10 simultaneously, carry out epoxy sealing afterwards, then ventilation channel plate 5 or the core ventilation pressing plate 4 of opposite side are installed, ensure through hole alignment.When opposite side install be ventilation channel plate 5 time, form the first kind unit magnetic pole; When opposite side install be core ventilation pressing plate 4 time, form the second kind unit magnetic pole.Finally by stainless steel rivet 7, rotor punching 3 and core ventilation pressing plate 4, ventilation channel plate 5 are riveted.
Unit magnetic pole 2 is after encapsulated epoxy resin, and thermal expansivity glass felt 9 solidifies, and plays the effect of restriction magnet steel 8 axial displacement; After elasticity tie 10 solidifies, play the effect of the circumferential displacement of restriction magnet steel 8; Core ventilation pressing plate 4 and/or ventilation channel plate 5 is utilized to achieve the sealing of magnet steel 8.
As shown in Figure 4, for the first kind unit magnetic pole, need on ventilation channel plate 5 spot welding vent segment 6, the position of vent segment 6 will cover the installation site of magnet steel 8, to strengthen protecting the axis of magnet steel 8, reduces the tooth of iron core and to rise problem.
See Fig. 1, the mounting means of unit magnetic pole 2 in rotating shaft 1 is: first install the first kind rotor tip pole end-plate 11 as shown in Figure 5, carry out axial location by the boss in rotating shaft 1 to the first kind rotor tip pole end-plate 11; Then the unit magnetic pole 2 (being the first kind unit magnetic pole) of ground floor is installed, during installation, ensures that core ventilation pressing plate 4 side of unit magnetic pole 2 contacts with above-mentioned first kind rotor tip pole end-plate 11; Then installation unit magnetic pole 2 (being the first kind unit magnetic pole) successively, ensure that the vent segment 6 that the core ventilation pressing plate 4 of one group of unit magnetic pole 2 and another are organized on the ventilation channel plate 5 of unit magnetic pole 2 contacts, by vent segment 6 axial restraint on ventilation channel plate 5 between adjacent cells magnetic pole 2; Unit magnetic pole 2 two ends of last one deck are core ventilation pressing plate 4 (being the second kind unit magnetic pole).After installation, laminate with aerostatic press, then the first kind rotor tip pole end-plate 12 is as shown in Figure 6 installed, and ensure that core ventilation pressing plate 4 side of the unit magnetic pole 2 of last one deck contacts with above-mentioned second kind rotor tip pole end-plate 12; Finally, arc key 13 is welded on the second kind rotor tip pole end-plate 12, with fixed rotor iron core.
First kind rotor tip pole end-plate 11 is different with the structure of the second kind rotor tip pole end-plate 12.As shown in Figure 5, the first kind rotor tip pole end-plate 11 has radial air openings; As shown in Figure 6, the second kind rotor tip pole end-plate 12 do not have radial air openings.
Interior wind path, under the effect of fan, is divided into two tunnels in the axial direction, and a road, through rotor axial ventilation hole, enters rotor radial ventilation ducts; One tunnel, through rotor air gap, enters stator Radial ventilation duct.
Above-described is only the preferred embodiment of the present invention, the invention is not restricted to above embodiment.Be appreciated that the oher improvements and changes that those skilled in the art directly derive without departing from the basic idea of the present invention or associate, all should think and be included within protection scope of the present invention.
Claims (3)
1. a unit field structure for permanent magnet machine rotor, is characterized in that: comprise rotating shaft and rotor core; Described rotor core is divided into multiple independently unit magnetic pole vertically, and each unit magnetic pole is fixed in rotating shaft; Radial ventilation groove is formed between adjacent unit magnetic pole.
2. the unit field structure of permanent magnet machine rotor according to claim 1, is characterized in that, described unit magnetic pole is divided into the first kind unit magnetic pole and the second kind unit magnetic pole;
First kind unit magnetic pole is assembled by rotor punching, core ventilation pressing plate, ventilation channel plate, vent segment, stainless steel rivet, magnet steel, thermal expansivity glass felt and elasticity tie; Thermal expansivity glass felt is bonded in the axle head both sides of magnet steel, at magnet steel peripheral surface brush configuration glue, magnet steel is placed in the groove of the rotor punching laminated, penetrates elasticity tie, and carry out epoxy sealing; Core ventilation pressing plate and ventilation channel plate is placed respectively at the rotor punching two ends laminated, yoke portion and the teeth portion of rotor punching, core ventilation pressing plate and ventilation channel plate are circumferentially distributed with through hole equably, rotor punching, core ventilation pressing plate and ventilation channel plate are fixed with stainless steel rivet; Vent segment is welded on ventilation channel plate, and its position covers the installation site of magnet steel;
Second kind unit magnetic pole is assembled by rotor punching, core ventilation pressing plate, stainless steel rivet, magnet steel, thermal expansivity glass felt and elasticity tie; Thermal expansivity glass felt is bonded in the axle head both sides of magnet steel, at magnet steel peripheral surface brush configuration glue, magnet steel is placed in the groove of the rotor punching laminated, penetrates elasticity tie, and carry out epoxy sealing; Place core ventilation pressing plate respectively at the rotor punching two ends laminated, the yoke portion of rotor punching and core ventilation pressing plate and teeth portion are circumferentially distributed with through hole equably, rotor punching and core ventilation pressing plate are fixed with stainless steel rivet;
First kind unit magnetic pole has multiple, and the second kind unit magnetic pole only has one; Between adjacent first kind unit magnetic pole, contacted with the core ventilation pressing plate of another the first kind unit magnetic pole by the vent segment of one of them the first kind unit magnetic pole; Between first kind unit magnetic pole and the second kind unit magnetic pole, contacted with the core ventilation pressing plate of the second kind unit magnetic pole by the vent segment of the first kind unit magnetic pole.
3. the unit field structure of permanent magnet machine rotor according to claim 2, it is characterized in that, the mounting means of described unit magnetic pole in rotating shaft is: in rotating shaft, install the first kind rotor tip pole end-plate, carries out axial location by the boss in rotating shaft to the first kind rotor tip pole end-plate; Rotating shaft is installed multilayer first kind unit magnetic pole, first kind rotor tip pole end-plate is contacted with the core ventilation pressing plate of the first kind unit magnetic pole of ground floor, and the vent segment of all the other each layer first kind unit magnetic poles contacts with the core ventilation pressing plate of adjacent layer first kind unit magnetic pole; Then one deck second kind unit magnetic pole is installed in rotating shaft, the core ventilation pressing plate of the second kind unit magnetic pole is contacted with the vent segment of adjacent layer first kind unit magnetic pole; Laminate with aerostatic press; Rotating shaft is installed the second kind rotor tip pole end-plate, the second kind rotor tip pole end-plate is contacted with the core ventilation pressing plate of the second kind unit magnetic pole, arc key is welded on the second kind rotor tip pole end-plate; The difference of described first kind rotor tip pole end-plate and the second kind rotor tip pole end-plate is, the first kind rotor tip pole end-plate has radial air openings, and the second kind rotor tip pole end-plate does not have radial air openings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510738230.2A CN105245047B (en) | 2015-11-03 | 2015-11-03 | A kind of unit field structure of permanent magnet machine rotor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510738230.2A CN105245047B (en) | 2015-11-03 | 2015-11-03 | A kind of unit field structure of permanent magnet machine rotor |
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| CN105245047A true CN105245047A (en) | 2016-01-13 |
| CN105245047B CN105245047B (en) | 2017-10-24 |
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| CN201510738230.2A Active CN105245047B (en) | 2015-11-03 | 2015-11-03 | A kind of unit field structure of permanent magnet machine rotor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105656231A (en) * | 2016-03-10 | 2016-06-08 | 重庆智仁发电设备有限责任公司 | Internal heat radiation nonsalient pole rotor |
| CN107623398A (en) * | 2016-07-15 | 2018-01-23 | 天津瑞林迪金属制品有限公司 | Rotor cover plate |
| CN109742913A (en) * | 2018-12-20 | 2019-05-10 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | A kind of permanent magnetism magnetic pole fixing means and rotor |
| CN111987828A (en) * | 2020-08-21 | 2020-11-24 | 山东齐鲁电机制造有限公司 | Permanent magnet auxiliary exciter for turbonator |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105656231A (en) * | 2016-03-10 | 2016-06-08 | 重庆智仁发电设备有限责任公司 | Internal heat radiation nonsalient pole rotor |
| CN105656231B (en) * | 2016-03-10 | 2019-01-25 | 重庆智仁发电设备有限责任公司 | Radiate rotor with non-salient poles in a kind of |
| CN107623398A (en) * | 2016-07-15 | 2018-01-23 | 天津瑞林迪金属制品有限公司 | Rotor cover plate |
| CN109742913A (en) * | 2018-12-20 | 2019-05-10 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | A kind of permanent magnetism magnetic pole fixing means and rotor |
| CN111987828A (en) * | 2020-08-21 | 2020-11-24 | 山东齐鲁电机制造有限公司 | Permanent magnet auxiliary exciter for turbonator |
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| CN105245047B (en) | 2017-10-24 |
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Effective date of registration: 20230420 Address after: 266000 1-23, D5 floor, LANWAN Pioneer Park, No.1 Jinhui Road, high tech Zone, Qingdao, Shandong Province Patentee after: Vision power Ltd. Address before: No. 18 Xinye Road, Qingdao, Shandong 266100 Patentee before: SINOPAL (QINGDAO) ELECTRIC CO.,LTD. |
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