CN102647055A - Assembly method of large-power permanent magnetic motor rotor - Google Patents

Assembly method of large-power permanent magnetic motor rotor Download PDF

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Publication number
CN102647055A
CN102647055A CN2012101235787A CN201210123578A CN102647055A CN 102647055 A CN102647055 A CN 102647055A CN 2012101235787 A CN2012101235787 A CN 2012101235787A CN 201210123578 A CN201210123578 A CN 201210123578A CN 102647055 A CN102647055 A CN 102647055A
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CN
China
Prior art keywords
rotor
permanent magnet
bolt
rotor unit
magnetic
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CN2012101235787A
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Chinese (zh)
Inventor
周俊
张映明
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Teco Group Science and Technology Hangzhou Co Ltd
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Teco Group Science and Technology Hangzhou Co Ltd
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Priority to CN2012101235787A priority Critical patent/CN102647055A/en
Publication of CN102647055A publication Critical patent/CN102647055A/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction

Abstract

The invention provides a large-power permanent magnetic motor rotor particularly suitable for a large-power permanent magnetic synchronous wind power generator, an assembly method of the rotor, and a permanent magnet magnetizing method. The rotor has an embedded permanent magnet structure, and is divided into a plurality of rotor unit along the axial direction, wherein a magnetic isolating groove is formed on an iron core between the permanent magnets on adjacent poles of each rotor unit along the axial direction of the rotor; and an end plate and a separator between the rotor units are adopted to fix the rotor. The assembly method provided by the invention can simplify the rotor manufacture and assembly as well as the permanent magnet magnetization program while obviating magnetic flux leakage and improving intensity, thereby improving the production efficiency.

Description

The installation method of rotor of high-power permanent magnet motor
 
The application is October 21 2010 applying date, application number 201010513307.3, the dividing an application of denomination of invention " rotor of high-power permanent magnet motor, the installation method of this rotor and the magnetization method of this rotor permanent magnet ".
Technical field
The present invention relates to technical field of motors, more particularly, relate to a kind of rotor of high-power permanent magnet motor that is particularly useful for permanent magnet synchronous wind generator, the assembly method of this rotor and the magnetization method of this rotor permanent magnet.
 
Background technology
It is low that magneto has loss, and the efficient advantages of higher in today that energy savings and environmental protection come into one's own day by day, is used more and more widely.Like blower fan, water pump, compressor etc. are with continuous, and constant speed and folk prescription are to the application scenario of operation, and common asynchronous moter is owing to efficient, and reasons such as power factor cause waste of electric energy, are replaced by magneto just gradually.Simultaneously, a lot of industrial machineries, its speed of service needs to set arbitrarily and regulate, but velocity control accuracy is less demanding, and permagnetic synchronous motor becomes the major product of this occasion just gradually because advantage such as volume is little, and is energy-efficient.
At present, the high-power permanent magnet synchronous generator is just becoming the mainstream development direction of wind-driven generator, compares with electric excitation synchronous generator; Magneto alternator does not need excitation winding and dc excitation power, has cancelled easy out of order epitrochanterian collector ring and brushgear, becomes brushless electric machine; The copper loss that does not have excitation winding; Ratio is high with the generator efficiency of the electric excitation type of capacity, and structure is simpler, moves more reliable.
Magneto alternator can be divided into two kinds of permanent magnet surface-mount type and embedded permanent magnets from the rotor structure.For the surface-mount type permanent magnet synchronous motor, the built-in permanent magnetic generator has long service life, can prevent effects such as three-phase suddenly-applied short circuit, demagnetization.
Simultaneously, because the volume of the rotor of high-power permanent magnet motor is bigger, in the permanent magnet assembling, because assembly path is longer, and permanent magnet belongs to fragile material, the therefore very difficult shape intact that guarantees permanent magnet.Assembly path is longer, can cause permanent magnet in assembling, to be difficult to the location simultaneously again.
In addition; The employed permanent magnet of high-power permanent magnet motor for commonly used has at present magnetized when permanent magnet manufacturer purchases mostly; Its stronger electromagnetic force assembles the very big difficulty of bringing for design of Clamping Apparatus and magnet, has restricted the trend of magneto large scale development.
 
Summary of the invention
The objective of the invention is to solve existing rotor adopts the embedded high-power permanent magnet synchro wind generator of permanent magnetism when operation; Be easy to generate between the rotor two neighboring pole that leakage field and flux path are squeezed easily and the problem of being out of shape; And rotor assembles inconvenience, epitrochanterian permanent magnet magnetizes back installation existence than problems such as big difficulties; A kind of permanent magnet machine rotor that is particularly useful for the high-power permanent magnet synchro wind generator is provided; And the assembly method of this rotor, based on the structure and the fit of this permanent magnet machine rotor, a kind of permanent magnet magnetization method that improves the rotor assembling speed is provided simultaneously.
The technical problem that the present invention solved can adopt following technical scheme to realize:
First aspect of the present invention; A kind of rotor of high-power permanent magnet motor, rotor adopts the embedded permanent magnet structure, and it is characterized in that: rotor is made up of two rotor units vertically at least; Offer separated magnetic groove on the iron core between each rotor unit two neighboring pole permanent magnet along rotor axial; Be provided with the dividing plate that non-magnet_conductible material is processed between the adjacent rotors unit, the rotor unit two ends are provided with end plate, and described at least two rotor units are fixed through the axial location bolt.
Among the present invention; The axial length of said at least two rotor units both can be identical, also can be inequality, when the axial length homogeneous phase while of each rotor unit; Rotor unit becomes the standard cell structure; For the rotor of different capacity grade, only need to adopt the rotor unit of varying number to get final product, simplified the production technology of rotor greatly.
Among the present invention; Saidly comprise separated a magnetic portion that extends between the two neighboring pole permanent magnet at least at a distance from the magnetic groove, simultaneously, said separated magnetic groove is away from rotor axis one side; Further can also comprise the both wing portions that extends to the excircle both sides along the rotor unit excircle; Through the shape of shape scalable motor air-gap field of adjustment both wing portions,, make magnetic field idealized as much as possible to reduce the harmonic content of air gap flux density.
A plurality of cross sectional shapes at a distance from the magnetic groove between each rotor unit two neighboring pole permanent magnet are identical; And be zhou duicheng tuxing; The extended line of symmetry axis to guarantee the symmetry of whole rotor structure, produces vibration through the axle center of rotor unit when avoiding rotor rotation.
Among the present invention, said axial location bolt is arranged on the pole shoe of the every utmost point of rotor unit, and the bolt quantity of every utmost point pole shoe equates and be positioned on the same circumference of rotor axis that each bolt is symmetrical with the relative rotor axis of the bolt center of the corresponding utmost point.
In order further to strengthen the constant intensity of rotor unit, in the separated magnetic portion of magnetic groove, axial bolt can be set, the end plate at said axial location bolt-through rotor unit two ends and the dividing plate between the rotor unit.
Said bolt all adopts conduction but non-magnet_conductible material is processed; A plurality of bolts carry out parallel connection, form the cage-shaped structure of parallel connection, when generator failure is moved; Mouse cage shape bolt produces relative magnetic field, can prevent that armature supply from causing irreversible demagnetization to permanent magnet.
Among the present invention; Because when power of motor was big, the permanent magnet volume of the needs of the every utmost point of rotor unit was bigger, causes being difficult to directly make the permanent magnet of monolithic; Even it is also cumbersome perhaps can to make installation; Among the present invention, a plurality of permanent magnets are set in the rotor unit permanent magnet trough, the separated magnetic conductance bar of processing through non-magnet_conductible material between each permanent magnet is separated.
Each permanent magnet in the permanent magnet trough adopts chamfered in the direction of magnetization, when preventing the generator failure operation to the full extent, and the demagnetizing effect that armature supply produces permanent magnet.
Second aspect of the present invention; A kind of assembly method of rotor of high-power permanent magnet motor; Rotor adopts the embedded permanent magnet structure; It is characterized in that: rotor is made up of two rotor units vertically at least; Offer the separated magnetic groove along rotor axial on the iron core between each rotor unit two neighboring pole permanent magnet, described at least two rotor units carry out Primary Location successively through being arranged between the short bolt fixed rotor unit in the magnetic groove at least two dividing plates of being processed by non-magnet_conductible material or the mode of end plate on armature spindle; After accomplishing the Primary Location of all rotor units, adopt the axial location bolt that said at least two rotor units are fixed again.
Among the present invention, said axial location bolt is arranged on the pole shoe of the every utmost point of rotor unit, and the bolt quantity of every utmost point pole shoe equates and be positioned on the same circumference of rotor axis that each bolt is symmetrical with the relative rotor axis of the bolt center of the corresponding utmost point.
After said at least two rotor units are fixed through the completion of axial location bolt; The short bolt of rotor unit in the magnetic groove taken out; Run through the end plate at rotor unit two ends and the axial location bolt of the dividing plate between the rotor unit in setting in the magnetic groove, to strengthen the constant intensity of rotor unit.
The third aspect of the invention; A kind of magnetization method of rotor of high-power permanent magnet motor permanent magnet; It is characterized in that: rotor is divided at least two rotor units vertically, unmagnetized magnetic material is packed into behind the rotor unit, the magnetic material in each rotor unit is magnetized separately; Then at least two rotor units are installed on the armature spindle successively, and the dividing plate that adopts non-magnet_conductible material to process is separated rotor unit.
Rotor of high-power permanent magnet motor of the present invention adopts the structure of rotor unit; When the axial length of rotor unit is identical; Can simplify the production of rotor greatly, the end plate at rotor unit and its two ends and the dividing plate between the rotor unit fixed, permanent magnet in the rotor unit and pole shoe have been played supporting role through the axial location bolt; Avoided centrifugal action on flux path, made flux path can not receive undue extruding and irreversible mechanical deformation takes place; Axial separated magnetic groove is set on the iron core between the rotor unit two neighboring pole between the permanent magnet; Magnetic field of permanent magnet can directly not be communicated with between the two neighboring pole, thereby can avoid producing leakage field, makes the utilance of permanent magnetic material be improved; At a distance from the design of magnetic groove alar part; The feasible shape of passing through the shape scalable motor air-gap field of adjustment both wing portions, and then the harmonic content of minimizing air gap flux density make magnetic field idealized as much as possible; A plurality of bolts form the cage-shaped structure of parallel connection, and when generator failure was moved, the mouse cage sliver produced relative magnetic field, prevents that armature supply from causing irreversible demagnetization to permanent magnet; In permanent magnet trough, be provided with at a distance from the magnetic conductance bar, in the time of can avoiding the use of the monolithic permanent magnet, cause the problem of manufacturing and installation difficulty.
Be provided with through the rotor unit structure; Make the rotor of rotor different capacity grade when assembling; Only need to adopt the rotor unit of varying number to get final product; Simplify the program of rotor assembling greatly, adopted the bolt in the magnetic groove that rotor unit is carried out Primary Location, also guaranteed the accuracy of rotor unit assembling simultaneously.
The present invention is divided into the rotor of high-power permanent magnet motor the rotor unit of a plurality of small sizes; And utilize the geometric properties of magnet isolation tank; Magnetize behind the realization permanent magnet; In assembling, adopt non-magnetic magnet steel, need not additional designs and make the anchor clamps that permanent magnet is installed, greatly reduce the difficulty of permanent magnet and rotor assembling.Simultaneously, single magnet steel volume can reduce greatly, is convenient to reduce the eddy current loss of permanent magnet in running.The mode that magnetizes after the employing can also realize the modularization production of rotor simultaneously, has improved production efficiency, has reduced production cost.
Description of drawings
Fig. 1 is the structural representation of permanent magnet machine rotor of the present invention.
Fig. 2 is the front view of rotor unit of the present invention.
The structural representation that Fig. 3 adopts " one " font at a distance from the magnetic conductance bar permanent magnet to be separated for the present invention.
Fig. 4 is the structural representation of the present invention " " font at a distance from magnetic conductance bar jack.
Fig. 5 is the structural representation that the present invention " worker " font is separated permanent magnet at a distance from the magnetic conductance bar.
Fig. 6 is the structural representation of the present invention " worker " font at a distance from magnetic conductance bar jack.
Fig. 7 is the confined state sketch map of end plate of the present invention and first rotor unit
Fig. 8 is the sketch map of first rotor unit Primary Location of the present invention
Fig. 9 is the sketch map of second rotor unit Primary Location of the present invention
Embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect and be easy to understand and understand, below in conjunction with concrete diagram, further set forth the present invention.
Purport of the present invention is to provide a kind of powerful permanent magnet machine rotor, especially uses the rotor on the high-power permanent magnet synchronous generator, and the magnetization method of the assembly method of this rotor and rotor permanent magnet,
To solve the high-power permanent magnet synchronous generator of embedded permanent magnet, the magnetic field of permanent magnet between the rotor two neighboring pole directly is communicated with easily, can produce leakage field, causes the utilance of permanent magnetic material not high; Rotor is in rotary course, and rotor permanent magnet and rotating pole-piece receive the centrifugal force of relative direction of rotation, and centrifugal action makes flux path be squeezed easily and irreversible mechanical deformation takes place on flux path; The assembling process of rotor is loaded down with trivial details, and rotor permanent magnet is installed problems such as there being big difficulty in the back of magnetizing.
Referring to Fig. 1, rotor of high-power permanent magnet motor of the present invention, with existing rotor of high-power permanent magnet motor adopt the structure of rotor pack different be, constitute by vertically at least two rotor units 1, for example adopt 6 rotor units 1 in the present embodiment.As shown in Figure 2; Rotor unit 1 can be regarded as a low power rotor structure; It is made up of iron core 11, the basic structures such as permanent magnet 12 that are arranged in the iron core 11 equally; But on axial length, carried out certain limitation, made the rotor of single rotor unit 1 relative lamination itself just have higher mechanical strength, and the follow-up assembling process that rotor unit 1 structure can be rotor facilitates.
Referring to Fig. 1, the axial length of a plurality of rotor units 1 is promptly identical, also can be different again; More excellent mode is, the axial length of a plurality of rotor units 1 is identical, and rotor unit 1 becomes normal structure like this; When producing, can be used as standard component and handle, can simplify the rotor production technology.When producing the rotor of different capacity grade, the corresponding different power grade of the quantity of rotor unit 1 only needs to adopt the rotor unit 1 of varying number to assemble and gets final product.
A plurality of rotor units 1 two ends are provided with end plate 2, are provided with dividing plate 3 between the rotor unit 1, and dividing plate 3 adopts the material with certain intensity to process, and end plate 2, rotor unit 1 and dividing plate 3 are fixed through axial bolt 4.After rotor was assemblied on the armature spindle 5, axial location bolt 4 was fixed together end plate 2, dividing plate 3 with a plurality of rotor units 1, and end plate 2 is played a supporting role with 3 pairs of a plurality of rotor units 1 of dividing plate.
As shown in Figure 2; Axial location bolt 4 is preferably pole shoe 13 places that are arranged on rotor unit 1 every utmost point; Rotor is when operation like this; Rotating pole-piece 13 receives the centrifugal force of relative direction of rotation and can be born jointly by end plate 2, dividing plate 3 and bolt 4, has also avoided centrifugal action on flux path 14, causes flux path 14 distortion.
For example in the present embodiment; Be provided with at pole shoe 13 places of rotor unit 1 every utmost point 3 grades big (Fig. 2 is for the ease of explanation rotor unit 1 structure to be used for inserting bolt along the bolt hole 15 of rotor axial; Bolt hole 15 does not insert bolt); The center of circle of all bolts hole 15 is positioned on the same circumference of rotor axis, the bolt hole of each bolt hole and the corresponding utmost point, the for example relative rotor axis with bolt hole 15b of bolt hole 15a center symmetry.The quantity that every utmost point pole shoe 13 places are provided with bolt should be provided with according to the demand of actual machine intensity, and just with every utmost point 3 bolts are set carries out exemplary illustration to present embodiment, is not limitation of the present invention.
Owing to be provided with permanent magnet separately in the permanent magnet trough of each rotor unit 1; After a plurality of rotor units 1 are assembled into rotor; Can have the leakage field problem between a plurality of rotor units 1, so dividing plate 3 must possess not magnetic conduction and nonconducting characteristic simultaneously except possessing certain intensity.Material can be the highstrenghtpiston like this; For example G-10, polyformaldehyde etc.; Also can be other composite materials, the composite material that constitutes of aramid fiber and synthetic resin, pottery, rubber for example, the composite material of silicon carbide fibre and synthetic resin, pottery, rubber formation etc.Because the adoptable material of obturator is numerous, can not enumerate one by one, as long as can satisfy the object of the invention here.
Referring to Fig. 2,, cause the problem of leakage field again for the magnetic field of permanent magnet that solves between the rotor two neighboring pole directly is communicated with easily.Offer separated magnetic groove 16 on the iron core 11 between the rotor unit 1 two neighboring pole permanent magnet 12 along rotor axial; At least should comprise one at a distance from magnetic groove 16 and extend to the separated magnetic 16a of portion between the two neighboring pole permanent magnet 12 from rotor unit 1 excircle; In the 16a of magnetic portion, be full of air and can have avoided the magnetic field conducting between the two neighboring pole permanent magnet 12 basically, play the effect that prevents leakage field; In addition; Separated magnetic groove 16 is away from rotor axis one side; Can also comprise the both wing portions 16b that extends to the excircle both sides along the rotor excircle, be full of air among the alar part 16b, through the shape of adjustment alar part 16b and then the shape of scalable motor air-gap field; Therefore can reduce the harmonic content of air gap flux density, make magnetic field idealized as much as possible.
For shape, should carry out equilibrium treatment from the many aspects such as distance between mechanical strength, separated magnetic effect, the two neighboring pole permanent magnetism at a distance from the 16a of magnetic portion.Although it is leg-of-mutton execution mode that embodiments of the invention only disclose the cross section of separated magnetic portion; Those skilled in the art should know; This is not a limitation of the present invention, and under the prerequisite that does not break away from spirit and scope of the invention, can adopt the cross section fully at a distance from magnetic portion is rectangle, regular figure such as trapezoidal; The perhaps execution mode of other any irregular section shapes, these variations and improving in the scope that all should fall into requirement protection of the present invention.
For alar part 16b structure, also can be according to the close harmonic content of motor gas-gap magnetic, and the Utopian requirement in magnetic field is is rationally accepted or rejected.Although should be pointed out that execution mode of the present invention, only provide a kind of execution mode of alar part cross sectional shape; Those skilled in the art also should know; This is not a limitation of the present invention, as long as extend to the excircle both sides at the rotor excircle, plays the effect of change motor gas-gap shape according to actual needs; Both wing portions is as the same at a distance from magnetic portion; Can adopt any rule or irregular cross sectional shape, as long as satisfy this spirit and design of electrical motor demand, these variations and improvement all should fall into the scope of requirement protection of the present invention.
Certainly, preferably mode is no matter to adopt what cross sectional shape; Cross sectional shape at a distance from magnetic groove 16 between the rotor two neighboring pole permanent magnet 12 is preferably identical; And no matter whether comprise alar part 16b at a distance from magnetic groove 16, the cross sectional shape of separated magnetic groove 16 all adopts zhou duicheng tuxing, and the extended line of symmetry axis is through the axle center (signal among Fig. 2) of rotor; Can fully guarantee the symmetry of whole rotor structure like this, avoid rotor in rotation process, to produce vibration.
When zhou duicheng tuxing is adopted in the cross section of the separated magnetic groove 16 with alar part 16b structure; The angle with rotor axis formation of both wing portions 16b end points can change big maximum 360/P degree from minimum value always; Wherein P is the number of poles of motor, according to actual needs the shape in motor gas-gap magnetic field is adjusted.For example, in the embodiment of the present invention, 6 utmost point motors of employing, then the angle maximum with rotor axis formation of both wing portions 16b end points can reach 60 degree, can in a bigger scope, adjust the shape in motor gas-gap magnetic field.Should be pointed out that this embodiment bright only be to adopt 6 utmost point motors to carry out example, be not limitation of the present invention.
In order further to strengthen the constant intensity between a plurality of rotor units 1; Dividing plate 3 between end plate 2 and rotor unit 1 can be provided with coaxial bolt hole over against the position at a distance from the 16a of magnetic portion; Axial location bolt 41 runs through the end plate 2 at rotor unit 1 two ends and a plurality of dividing plates 3 between the rotor unit 1, and then strengthens the constant intensity between a plurality of rotor units 1.
The bolt at rotor unit 1 pole shoe 13 places all adopts conduction but non-magnet_conductible material is processed; Materials such as for example common stainless steel, copper, a plurality of axial location bolts carry out parallel connection, form the cage-shaped structure of parallel connection; If in the 16a of magnetic portion, also be provided with the axial location bolt; Be arranged on then that axial location bolt at a distance from magnetic portion 16a place also adopts above-mentioned conduction but non-magnet_conductible material is processed, and form parallelly connected cage-shaped structure, like this when generator failure is moved with the axial location bolt parallel connection at pole shoe 13 places; A plurality of axial location bolts of mouse cage shape produce relative magnetic field, can prevent that armature supply from causing irreversible demagnetization to permanent magnet.
Although adopt the mode of rotor unit 1 to constitute rotor structure; In the time of can avoiding permanent magnet is installed; The problem that the permanent magnet axial length is bigger; But when the permanent magnet sectional area of the needs of rotor unit 1 every utmost point is big, also can cause being difficult to directly make the permanent magnet of monolithic, even it is also cumbersome perhaps can to make installation.
Referring to Fig. 3, Fig. 4 (the structure enlarged drawing of rotor one utmost point), adopt the mode of 3 separated permanent magnets in rotor unit 1 permanent magnet trough 17, " one " font of processing through non-magnet_conductible material between each permanent magnet is separated at a distance from magnetic conductance bar 18a.The separated magnetic conductance bar 18a of " one " font is arranged among the separated magnetic conductance bar jack 19a of " one " font in the middle of the permanent magnet trough 17, and then the polylith permanent magnet is separated.Adopt " one " font to be at a distance from the benefit of magnetic conductance bar 18a, simple in structure, be that " one " font all realizes than being easier at a distance from the manufacturing of magnetic conductance bar 18a at a distance from punching out or " one " font of magnetic conductance bar jack 19a.
Referring to Fig. 5, Fig. 6; Difference at a distance from magnetic conductance bar jack 19a is with " one " font at a distance from magnetic conductance bar 18a with " one " font; In this execution mode, adopted " worker " font at a distance from magnetic conductance bar 18b and the separated magnetic conductance bar jack 19b of " worker " font, its advantage is; When the mechanical strength at pole shoe 13 places is not enough, pole shoe 13 is played fixing effect.No matter adopt the separated magnetic conductance bar of which kind of structure that permanent magnet is separated; When at a distance from magnetic conductance strip adoption non-magnet_conductible material; Can largely reduce leakage field, it is as far as possible little that the thickness of separated magnetic conductance bar can be provided with, and compares with the permanent magnet of putting into monoblock; The overall width of the permanent magnet that the permanent magnet trough of identical size is put into differs and not quite, but the manufacturing of permanent magnet and installation process become easy unusually.
Again referring to Fig. 3; Describe to adopt " one " font permanent magnet to be separated at a distance from the magnetic conductance bar; Each permanent magnet that is separated in the permanent magnet trough adopts chamfering 6 to handle in the direction of magnetization; In the time of can preventing the generator failure operation so to the full extent, the demagnetizing effect that armature supply produces permanent magnet.
Because adopted the structure of rotor unit 1, just can, bring rotor very big facility when assembling, make the magnetizing also to become and be easy to of permanent magnet simultaneously.Among the present invention; Before rotor unit 1 assembles; At first in the permanent magnet trough 17 with unmagnetized magnetic material (being permanent magnet after the magnetizing) rotor unit 1 of packing into,, then insert the magnetic material of behind the magnetic conductance bar, putting into piecemeal more successively earlier if adopt the mode of separated permanent magnet; Then, the rotor unit 1 of the magnetic material of will packing into magnetizes respectively independently, influences each other between the rotor unit 1 avoiding, and magnetizes to carry out next step assembling after finishing again.
Referring to Fig. 7; The mode that at first adopts shrink fit is installed in the end plate 2 of rotor one side on the armature spindle 5 with first rotor unit 1a; Because before assembling; Set the bolt hole that inserts bolt on end plate 2 and the rotor unit 1a iron core, to guarantee during assembling bolt hole corresponding on end plate 2 and the rotor unit 1a iron core over against.
Referring to Fig. 8; After accomplishing above-mentioned steps; The dividing plate 3a that processes by non-magnet_conductible material that on armature spindle 5, install to separate first rotor unit 1a and second rotor unit 1b, should note guaranteeing when dividing plate 3a is installed dividing plate 3a go up with end plate 2 and first rotor unit 1a iron core on corresponding bolt hole over against; Then; Adopt the length short bolt 4a suitable with first rotor unit 1a axial length; Through end plate 2 and dividing plate 3a in the coaxial bolts hole of rotor unit at a distance from separated the magnetic portion 16a place setting of magnetic groove; Adopt nut that end plate 2 is fixed with dividing plate 3a at two ends, and then clamp first rotor unit 1a, accomplish Primary Location first rotor unit 1a.
Short bolt 4a carries out Primary Location as long as satisfy to first rotor unit 1a; Therefore can be provided with at each separated magnetic portion 16a place of rotor unit 1a; Adopted a kind of more excellent execution mode in the present embodiment; Short bolt 4a is being provided with at a distance from the 16a of magnetic portion interval, and setting also can be convenient to the Primary Location of follow-up rotor unit like this, and hereinafter will be described in detail.
Referring to Fig. 9; After accomplishing the Primary Location of first rotor unit 1a; With second rotor unit 1b and separate second rotor unit 1b and dividing plate 3b that the 3rd rotor unit (meaning not shown in the figures) processed by non-magnet_conductible material is installed on the armature spindle 5 successively, guarantee simultaneously second rotor unit 1b, dividing plate 3b and end plate 2, first rotor unit 1a, end plate 3a go up corresponding bolt hole over against.
Then; Formerly first rotor unit 1a is not provided with the separated magnetic portion 16a place of short bolt 4a; Adopt length and first rotor unit 1a and the suitable short bolt 4b of the second rotor unit 1b axial length sum to run through end plate 2, dividing plate 3a and dividing plate 3b and go up coaxial bolt hole; Adopt nut that end plate 2 is fixed with dividing plate 3a at end plate 2 and two ends, dividing plate 3b ground again; And then clamp first rotor unit 1a and second rotor unit 1b simultaneously, like this, just accomplish the Primary Location of second rotor unit 1b.
When assembling the 3rd rotor unit; After the 3rd rotor unit and the dividing plate of separating the 3rd rotor unit and the 4th rotor unit placed; Take out all short bolt 4a, adopt the length short bolt suitable that the 3rd rotor unit carried out Primary Location herein with first three rotor axial length.When the 4th rotor unit of assembling; In like manner take out all short bolt 4b; Adopt the length short bolt suitable that the 4th rotor unit carried out Primary Location herein with preceding four rotor axial length; By that analogy, to the last a rotor unit and other one section end plate are installed on the armature spindle 5, accomplish the Primary Location of all rotor units.
After accomplishing above-mentioned steps; As shown in Figure 1; Adopt axial location bolt 4 that a plurality of rotor units are fixed again, as previously mentioned, mode is at pole shoe 13 places of rotor unit 1 every utmost point the identical axial location bolt 4 of quantity to be set preferably; The center of circle of all bolts 4 is positioned on the same circumference of rotor axis, and each bolt 4 is symmetrical with the bolt 4 relative rotor axis centers of the corresponding utmost point.Preamble is described, no longer tired here stating.
After completion pole shoe bolt 4 is fixed; In order further to strengthen the constant intensity of rotor unit; With rotor unit at a distance from location, magnetic portion 16a place after the shortest bolt taking-up of the unit of latter two rotor; At each separated magnetic portion 16a place of rotor unit the axial location bolt 41 identical with pole shoe is set again, bolt 41 runs through the end plate 2 at rotor unit 1 two ends and a plurality of dividing plates 3 between the rotor unit 1.
Certainly, to the Primary Location of rotor unit, except above-mentioned more excellent execution mode, much other execution modes can also be arranged according to spirit of the present invention.For example; Dividing plate 3 between the rotor unit 1 is provided with to such an extent that have a certain thickness; Dividing plate 3 is set to counterbore at the bolt hole of rotor unit 1 at a distance from magnetic portion 16a place; The mode of first rotor unit 1a Primary Location is similar with said method, and difference is that the nut that is used for Primary Location is arranged on counterbore, and short bolt 4a does not stretch out dividing plate 3a end face in dividing plate 3a one side; Can in all separated magnetic 16a of portion of rotor unit 1, short bolt 4a (can certainly be provided with at interval like above-mentioned execution mode) be set all like this, 1a carries out Primary Location to first rotor unit.
When assembling second rotor unit 1b; Then adopt and second short bolt that rotor unit 1b axial length is suitable; This short bolt is through the counterbore of dividing plate 3b at a distance from magnetic portion 16a place; One end stretches into dividing plate 3a and (does not stretch out the end face of dividing plate 3a owing to short bolt 4a at the counterbore at a distance from magnetic portion 16a place; Therefore be to have the space), the other end is in the counterbore of dividing plate 3b (this end does not stretch out the end face of dividing plate 3b equally), through the fastening nut that is arranged in the dividing plate 3b counterbore second rotor unit 1b is carried out Primary Location.
In like manner, each rotor unit all adopts the short bolt suitable with self axial length that self is carried out Primary Location, and to the last a rotor unit is accomplished Primary Location.The advantage of this execution mode is; Mutually the same when the axial length of all rotor units 1, when the axial width of all dividing plates 3 was mutually the same, the length of all short bolts also was identical; The load module of rotor all can become standard component, can help enhancing productivity; What this execution mode had inconvenience slightly is, when the short bolt that is used for Primary Location need take out replacing during long bolt, relative first kind of execution mode complicacy.How nut is set in the counterbore bolt is carried out fastening, those skilled in the art should know, and this present invention is no longer tired out state.
Except above-mentioned execution mode; The rotor unit Primary Location also had other modes; Above-mentioned execution mode is not a limitation of the present invention; According to spirit of the present invention, all use short bolt fixed charge method end plate 2 and dividing plate 3, adjacent separator 3, dividing plate 3 and then progressively rotor unit 1 is carried out the mode of Primary Location separately at dividing plate 3b at a distance from magnetic portion 16a place, all should fall into the scope that requirement of the present invention is protected.
For powerful magneto, the permanent magnet synchronous wind generator of MW class for example, because power is bigger, the consumption of each utmost point permanent magnet of rotor will be bigger, the installation of permanent magnet must be very difficult.And the present invention, rotor adopts the mode of a plurality of rotor units, has at first avoided the excessive problem of rotor one utmost point permanent magnet axial length; Adopt at a distance from the magnetic conductance bar again in the permanent magnet trough permanent magnet is separated, make the width of permanent magnet also correspondingly reduce; To be fit into rotor unit without magnetized magnetic material earlier; The mode that again magnetic material is magnetized; Avoided on the one hand magnetizing the back magnetic material because magnetic is difficult to the problem of installing more greatly; In the assembling process of rotor unit, promptly accomplished the assembling of permanent magnet on the other hand, the installation procedure of the rotor of simplifying has greatly improved the efficiency of assembling of rotor.
More than show and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the specification just explains principle of the present invention; Under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various changes and modifications, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection range to be defined by appending claims and equivalent thereof.

Claims (3)

1. the installation method of rotor of high-power permanent magnet motor; Rotor adopts the embedded permanent magnet structure; It is characterized in that: rotor is made up of two rotor units vertically at least; Offer the separated magnetic groove along rotor axial on the iron core between each rotor unit two neighboring pole permanent magnet, described at least two rotor units carry out Primary Location successively through being arranged between the short bolt fixed rotor unit in the magnetic groove at least two dividing plates of being processed by non-magnet_conductible material or the mode of end plate on armature spindle; After accomplishing the Primary Location of all rotor units, adopt the axial location bolt that said at least two rotor units are fixed again.
2. the installation method of rotor of high-power permanent magnet motor as claimed in claim 1; It is characterized in that: said axial location bolt is arranged on the pole shoe of the every utmost point of rotor unit; The bolt quantity of every utmost point pole shoe equates and is positioned on the same circumference of rotor axis that each bolt is symmetrical with the relative rotor axis of the bolt center of the corresponding utmost point.
3. according to claim 1 or claim 2 the installation method of rotor of high-power permanent magnet motor; It is characterized in that: after said at least two rotor units are fixed through the completion of axial location bolt; The short bolt of rotor unit in the magnetic groove taken out, run through the end plate at rotor unit two ends and the axial location bolt of the dividing plate between the rotor unit in setting in the magnetic groove.
CN2012101235787A 2012-04-25 2012-04-25 Assembly method of large-power permanent magnetic motor rotor Pending CN102647055A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104143885A (en) * 2013-05-09 2014-11-12 上海电气集团上海电机厂有限公司 Stator and rotor penetrating method for ultra-high-speed permanent magnet motor
CN105006925A (en) * 2015-08-19 2015-10-28 李明山 Method for manufacturing permanent magnet rotor of motor
CN111948585A (en) * 2020-08-05 2020-11-17 吴江市金澜机械制造有限公司 Rotor magnetizing and surface magnetic measuring device
CN113478204B (en) * 2021-06-16 2022-07-19 精基科技有限公司 Full-automatic assembly equipment for high-power motor rotor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102005838A (en) * 2010-10-20 2011-04-06 东元总合科技(杭州)有限公司 High-power permanent-magnet motor rotor, installation method of rotor and method for magnetizing rotor permanent magnet

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102005838A (en) * 2010-10-20 2011-04-06 东元总合科技(杭州)有限公司 High-power permanent-magnet motor rotor, installation method of rotor and method for magnetizing rotor permanent magnet

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104143885A (en) * 2013-05-09 2014-11-12 上海电气集团上海电机厂有限公司 Stator and rotor penetrating method for ultra-high-speed permanent magnet motor
CN105006925A (en) * 2015-08-19 2015-10-28 李明山 Method for manufacturing permanent magnet rotor of motor
CN111948585A (en) * 2020-08-05 2020-11-17 吴江市金澜机械制造有限公司 Rotor magnetizing and surface magnetic measuring device
CN113478204B (en) * 2021-06-16 2022-07-19 精基科技有限公司 Full-automatic assembly equipment for high-power motor rotor

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Application publication date: 20120822