CN109728695A

CN109728695A - A kind of permanent magnet synchronous motor of high power density

Info

Publication number: CN109728695A
Application number: CN201910178151.9A
Authority: CN
Inventors: 孙建林
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-03-08
Filing date: 2019-03-08
Publication date: 2019-05-07

Abstract

The invention discloses a kind of permanent magnet synchronous motors of high power density, including drive end bearing bracket, rear end cap, shaft, casing, the outer wall of shaft is connected by key radial magnetic field motor rotor core, radial magnetic field motor rotor core includes straight pan portion and ring disk part, the outer wall of ring disk part is circumferentially uniformly pasted with radial magnetic field motor magnet steel, the inner wall interference fit installation radial magnetic field motor stator of casing, radial magnetic field motor air gap is formed between the inner edge of radial magnetic field motor stator and the outer rim of radial magnetic field motor magnet steel, the center of straight pan portion sets the symmetrical straight pan portion boss in front and back, disk type electric motor rotor is connected on straight pan portion boss, the rear end of drive end bearing bracket and the front end of rear end cap set disk type electric machine stator, disc type electric machine air gap is formed between corresponding disk type electric machine stator and disk type electric motor rotor.Small volume of the present invention and power density is big, compact-sized, it is convenient to dismount.

Description

A kind of permanent magnet synchronous motor of high power density

Technical field

The present invention relates to motor fields, more particularly, to a kind of permanent magnet synchronous motor of high power density.

Background technique

Currently, power density already becomes a very posted index of design of electrical motor, high power density motor, i.e., Motor can export bigger power under certain volume, since high power density motor has small in size, light-weight, output work Many advantages, such as rate is big or torque is big is widely used in Aeronautics and Astronautics, navigation and industrial circle.

Aviation high power density motor is the important component of various Advanced Aircraft indispensabilities, such as radar, the driving motor of antenna, Propeller driving motor etc., requirement of the motor of space industry for power density is higher, such as satellite antenna driving motor, high Power density motor also has huge application prospect in navigational field, such as the driving motor of electric topedo, does not require nothing more than sufficiently large Driving force, and want volume very little, application of the high density motor on industrial circle is just more extensive, and such as advanced manufacture is set Standby, digital control system, automatic production line, robot, electric car etc..

The main path that power of motor density is promoted: first is that increasing output power of motor, another is exactly to guarantee motor Reduce the volume of motor under the premise of output power as far as possible, reduces motor quality.The mentality of designing of the application is to increase electricity As make internal structure of motor compact to design as possible while machine output power, to realize higher power density.

Summary of the invention

It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, a kind of permanent magnet synchronous electric of high power density is provided Machine, small volume and power density is big, compact-sized, it is convenient to dismount.

To achieve the goals above, the present invention adopts the following technical scheme:

A kind of permanent magnet synchronous motor of high power density, the drive end bearing bracket and rear end cap being distributed including time interval are threaded through The casing of shaft, connection drive end bearing bracket and rear end cap on drive end bearing bracket and rear end cap, the outer wall of the shaft have been connected by key diameter To magnetic field electric motor rotor core, the radial magnetic field motor rotor core includes straight pan portion and the ring disk positioned at straight pan portion outer rim Portion, the outer wall of the ring disk part are circumferentially uniformly pasted with radial magnetic field motor magnet steel, and the inner wall of the casing is interference fitted installation There is radial magnetic field motor stator, is formed between the inner edge of the radial magnetic field motor stator and the outer rim of radial magnetic field motor magnet steel Radial magnetic field motor air gap, the center of the straight pan portion are equipped with front and back symmetrically straight pan portion boss, connect on each straight pan portion boss It is connected to disk type electric motor rotor, the rear end of the drive end bearing bracket and the front end of rear end cap are equipped with disk type electric machine stator, corresponding disk Disc type electric machine air gap is formed between formula motor stator and disk type electric motor rotor.

The outer wall of the ring disk part is circumferentially evenly distributed with ring disk part groove, and fitting plugs what front and back extended in the ring disk part groove Parting bead, the two sidewalls beyond the parting bead outside ring disk part groove are bonded the side wall of two neighboring radial magnetic field motor magnet steel, institute respectively The front/rear end for stating ring disk part is fitted with ring flat-plate, on the ring flat-plate it is circumferentially uniformly distributed for parting bead fitting across parting bead perforate.

The front/rear end of the radial magnetic field motor magnet steel is equipped with magnet steel location hole, circumferentially uniformly corresponds on the ring flat-plate The ring flat-plate pillar of fitting insertion magnet steel location hole.

The disk type electric motor rotor includes the disk type electric motor rotor iron core being jointly mounted on straight pan portion boss, the disc type The center of motor rotor core is equipped with rotor core bulge loop far from an end face of straight pan portion boss, and disk type electric motor rotor iron core is upper Disc type is fitted between the circumferential uniformly rotor core raised line in the periphery of rotor core bulge loop, two neighboring rotor core raised line Motor rotor magnetic steel is circumferentially with the partition for covering disk type electric motor rotor magnet steel on the disk type electric motor rotor iron core.

One end face of partition fitting disk type electric motor rotor magnet steel, the rotor core raised line be equipped with raised line screw hole and Pillar jack, the center of the partition are equipped with partition recessed portion, and the partition recessed portion is equipped with corresponding with raised line screw hole Recessed portion is perforated, and the recessed portion pillar of fitting insertion pillar jack is additionally provided on partition recessed portion, and the interior outer rim of partition is equipped with Protective edge is bonded the outer rim of disk type electric motor rotor magnet steel positioned at the protective edge of partition outer rim and resists the end of disk type electric motor rotor iron core Face, the protective edge positioned at partition inner edge are bonded the inner edge of disk type electric motor rotor magnet steel and resist the end face of rotor core bulge loop, each Disk type electric motor rotor magnet steel is located between the partition recessed portion of corresponding two partitions.

The disk type electric machine stator includes disk type motor stator core and is circumferentially evenly arranged on disk type motor stator core One end face of disk type electric machine stator winding, the disk type electric machine stator winding is equipped with stator core locating convex block.

The back-end central of the drive end bearing bracket is equipped with preceding round plate inward flange, and the rear end of drive end bearing bracket is located at preceding round plate inward flange Interior to be equipped with preceding round plate positioning recessed bar, the outer rim of the disk type motor stator core of the disk type electric machine stator on drive end bearing bracket is with before The inner edge of round plate inward flange is interference fitted and the corresponding fitting of stator core locating convex block is inserted into preceding round plate and positions recessed bar, described The front end center of rear end cap is equipped with rear disk portion flange, and the front end of rear end cap, which is located in rear disk portion flange, is equipped with rear disk Portion positions recessed bar, positioned at the outer rim and rear disk portion flange of the disk type motor stator core of the disk type electric machine stator of rear end cap Inner edge interference fit and stator core locating convex block corresponding fitting insertion rear disk portion positioning recessed bar.

The front end center of the drive end bearing bracket is connected with pressing plate, and the shaft is connect by fore bearing with drive end bearing bracket, the pressure The center of plate is equipped with the pressing plate axis hole passed through for shaft, and the front end center of pressing plate is equipped with lip-shaped sealed ring, the lip-shaped sealed ring Inner edge be equipped with the sealing lip being interference fitted with the outer wall of shaft, the outer wall of the shaft is opposite with pressing plate axis hole to be located equipped with dust-proof Circle, is fitted with waveform spring washer and plain washer, waveform spring washer position between the rear end and fore bearing of the pressing plate Between fore bearing and plain washer.

The back-end central of the rear end cap connects back cover, and the shaft is connect by rear bearing with rear end cap, the back cover Front end center be equipped with and resist the rear shroud flange of rear bearing.

The radial magnetic field motor stator includes radial magnetic field motor stator core and is circumferentially evenly arranged on radial magnetic field motor Radial magnetic field motor stator winding on stator core, the outer wall of the radial magnetic field motor stator core and the inner wall mistake of casing It is full of cooperation.

The beneficial effects of the present invention are:

1. structurally reasonable, compact reliable, assembly technology is simple, convenient for disassembly and assembly；

2. radial magnetic field motor and two disc type electric machines are integrated in very compact space, substantially increase whole Power density；

3. being effectively improved made of the parting bead and ring flat-plate one on radial magnetic field motor rotor core " mouse cage type structure " The starting performance (being asynchronous starting when starting to start, then pull in revolving speed again) of motor, and if motor speed mutation When can also play damping action, maintain stabilization of speed, while parting bead and ring flat-plate can also play fixed radial magnetic field electric motor magnet steel Effect, guaranteeing that radial magnetic field motor magnet steel is firm will not fall off；

4. the stabilized structure of disk type electric motor rotor guarantees that disk type electric motor rotor magnet steel will not fall off, easy to assembly simple；

5. easy installation and reliable between radial magnetic field motor rotor core and disk type electric motor rotor, it is ensured that stable operation；

6. motor-shaft extending end good airproof performance.

Detailed description of the invention

Fig. 1 is the structural diagram of the present invention；

Fig. 2 is the enlarged drawing in Fig. 1 at A；

Fig. 3 is the perspective view of radial magnetic field motor rotor of the invention；

Fig. 4 is the explosive view of Fig. 3；

Fig. 5 is the top view of Fig. 3；

Fig. 6 is the cross-sectional view of B-B direction in Fig. 5；

Fig. 7 is the perspective view of radial magnetic field motor stator of the invention；

Fig. 8 is the perspective view of disk type electric motor rotor of the invention；

Fig. 9 is the explosive view at the first visual angle of Fig. 8；

Figure 10 is the explosive view at the second visual angle of Fig. 8；

Figure 11 is the perspective view of partition of the invention；

Figure 12 is the top view of Fig. 8；

Figure 13 be Figure 12 in C-C to cross-sectional view；

Figure 14 is the perspective view of disk type electric machine stator of the invention；

Figure 15 is the perspective view at the first visual angle of drive end bearing bracket of the invention；

Figure 16 is the perspective view at the second visual angle of drive end bearing bracket of the invention；

Figure 17 is the perspective view at the first visual angle of rear end cap of the invention；

Figure 18 is the perspective view at the second visual angle of rear end cap of the invention；

Figure 19 is the perspective view of dustband of the invention.

In figure: drive end bearing bracket 1, preceding round plate 11, preceding round plate outward flange 12, drive end bearing bracket installation counterbore 13, in preceding round plate Flange 14, drive end bearing bracket axis hole 15, preceding round plate positioning recessed bar 16, prelocalization recessed bar eject hole 17, pressing plate seat 18, pressing plate seat screw hole 19, fore bearing 110, rear end cap 2, rear disk portion 21, rear disk portion outward flange 22, rear end cap installation counterbore 23, in rear disk portion Flange 24, rear end cap axis hole 25, rear disk portion positioning recessed bar 26, rear positioning recessed bar ejection hole 27, rear disk portion inward flange 28, after Cover seat 29, back cover seat screw hole 210, rear end cap cable hole 211, rear bearing 212, shaft 3, radial magnetic field motor rotor core 31, Straight pan portion 32, ring disk part 33, ring disk part groove 34, straight pan portion boss 35, straight pan portion boss screw hole 36, straight pan portion through-hole 37, diameter To magnetic field electric motor magnet steel 38, magnet steel location hole 39, ring flat-plate 310, ring flat-plate pillar 311, parting bead perforation 312, axis snap ring 313, key 314, parting bead 315, the first pinhole 316, pin 317, radial magnetic field motor stator 4, radial magnetic field motor stator core 41, diameter To magnetic field electric motor stator winding 42, disk type electric motor rotor 5, disk type electric motor rotor iron core 51, disk type electric motor rotor magnet steel 52, partition 53, rotor core bulge loop 54, bulge loop counterbore 55, rotor core raised line 56, raised line screw hole 57, pillar jack 58, partition recessed portion 59, recessed portion perforation 510, protective edge 511, recessed portion pillar 512, partition fixing screws 513, the second pinhole 514, disc type electric machine Stator 6, disk type motor stator core 61, disk type electric machine stator winding 62, stator core locating convex block 63, casing 7, casing cabling Hole 71, casing fixing screws 73, pressing plate 8, pressing plate counterbore 81, pressing plate fixing screws 82, pressing plate axis hole 83, is prevented casing screw hole 72 Konisphere 84, waveform spring washer 85, plain washer 86, lip-shaped sealed ring mounting base 87, lip-shaped sealed ring 88, sealing lip 89, cylinder Portion 810, oblique baffle ring 811, back cover 9, rear shroud flange 91, back cover counterbore 92, back cover fixing screws 93.

Specific embodiment

Present invention will be further described below with reference to the accompanying drawings and specific embodiments:

As shown in Fig. 1~Figure 19, a kind of permanent magnet synchronous motor of high power density, the drive end bearing bracket including time interval distribution 1 and rear end cap 2, be threaded through on drive end bearing bracket 1 and rear end cap 2 shaft 3, connect drive end bearing bracket 1 and rear end cap 2 casing 7, casing 7 Annular wall on open up casing cable hole 71, the front end face and rear end face of casing 7 are circumferentially evenly distributed with casing screw hole 72, drive end bearing bracket 1 Rear end face be equipped with preceding round plate outward flange 12, the circumferential uniformly distributed and machine in periphery of preceding round plate outward flange 12 is located on drive end bearing bracket 1 The one-to-one drive end bearing bracket of shell screw hole 72 installation counterbore 13 simultaneously penetrates drive end bearing bracket installation 13 He of counterbore by casing fixing screws 73 Casing screw hole 72 is fixed, wherein the annular inner wall of annular outer wall fitting 7 front end of casing of preceding round plate outward flange 12, after The front end face of end cap 2 is equipped with rear disk portion outward flange 22, and the periphery that rear disk portion outward flange 22 is located on rear end cap 2 is circumferential uniformly distributed Counterbore 23 is installed and penetrates rear end cap by casing fixing screws 73 with the one-to-one rear end cap of casing screw hole 72, counterbore is installed 23 and casing screw hole 72 be fixed, wherein in the annular of the annular outer wall of rear disk portion outward flange 22 fitting 7 rear end of casing Wall.

The outer wall of the shaft 3 is connected with radial magnetic field motor rotor core 31, radial magnetic field motor rotor by key 314 One end of iron core 31 resists the shaft shoulder of shaft 3, and the other end of radial magnetic field motor rotor core 31 is supported by axis snap ring 313 It connects.

The radial magnetic field motor rotor core 31 includes straight pan portion 32 and the ring disk part 33 positioned at straight 32 outer rim of pan portion, directly Pan portion 32 is located at the inner wall middle of ring disk part 33.Circumferentially uniformly distributed straight pan portion through-hole 37 in straight pan portion 32, straight pan portion through-hole 37 Setting can mitigate weight, but also with the effect of good heat dissipation.

The outer wall of the ring disk part 33 is circumferentially uniformly pasted with radial magnetic field motor magnet steel 38, the specially described ring disk part 33 Outer wall be circumferentially evenly distributed with ring disk part groove 34, be fitted with a radial magnetic field electricity between two ring disk part grooves 34 of arbitrary neighborhood Machine magnet steel 38.Fitting plugs the parting bead 315 that front and back extends in the ring disk part groove 34, and the material of parting bead 315 is copper, parting bead After 315 insertion ring disk part grooves 34, the rear and front end of parting bead 315 also exceeds beyond the outer rim of ring disk part groove 34 and parting bead 315 Ring disk part groove 34.

Two sidewalls beyond the parting bead 315 outside ring disk part groove 34 are bonded two neighboring radial magnetic field motor magnet steel 38 respectively Side wall, such radial magnetic field motor magnet steel 38 can not be circumferentially displaced.

The front/rear end of the ring disk part 33 is fitted with ring flat-plate 310, and the material of ring flat-plate 310 is copper, the ring flat-plate 310 Upper circumferential direction it is uniformly distributed for the fitting of parting bead 315 across parting bead perforation 312.The rear and front end of parting bead 315 exceeds two ring flat-plates 310 respectively And parting bead 315 and ring flat-plate 310 are welded and fixed, the parting bead 315 of such circumference uniform distribution and its ring flat-plate 310 of two sides constitute " mouse Cage construction " effectively improves the starting performance of motor.

The front/rear end of the radial magnetic field motor magnet steel 38 is equipped with magnet steel location hole 39, circumferential direction on the ring flat-plate 310 The ring flat-plate pillar 311 of uniformly distributed corresponding fitting insertion magnet steel location hole 39.This arrangement ensures the accurate installation of ring flat-plate 310 positioning, The fixation of radial magnetic field motor magnet steel 38 is relatively reliable simultaneously.

The inner wall interference fit of the casing 7 is equipped with radial magnetic field motor stator 4, the radial magnetic field motor stator 4 Including radial magnetic field motor stator core 41 and the circumferential radial magnetic field motor being evenly arranged on radial magnetic field motor stator core 41 Stator winding 42, the outer wall of the radial magnetic field motor stator core 41 and the inner wall of casing 7 are interference fitted.Radial magnetic field motor The structure of stator 4 is existing conventional techniques, is not described herein.

Radial magnetic field is formed between the inner edge of the radial magnetic field motor stator 4 and the outer rim of radial magnetic field motor magnet steel 38 Motor gas-gap, air gap are also motor field major terms, and the relevant technologies about air gap do not describe in detail herein.Radial magnetic field Motor stator 4 and radial magnetic field motor rotor (including shaft 3, radial magnetic field motor rotor core 31, radial magnetic field motor magnet steel 38 equal components) and radial magnetic field motor air gap composition radial magnetic field motor.

The center of the straight pan portion 32 is equipped with front and back symmetrically straight pan portion boss 35, and straight pan portion boss 35 is i.e. along straight pan portion 32 center forward, extend back and protrude, straight pan portion boss 35 be equipped with straight pan portion boss screw hole 36 and the first pinhole 316, be connected with disk type electric motor rotor 5 on each straight pan portion boss 35, the outer rim of disk type electric motor rotor 5 without departing from ring disk part 33, I.e. disk type electric motor rotor 5 is located in the inner space that ring disk part 33 surrounds, and thus substantially reduces the volume of motor, whole to tie Structure is compact.

The disk type electric motor rotor 5 includes the disk type electric motor rotor iron core 51 being jointly mounted on straight pan portion boss 35, institute The center for stating disk type electric motor rotor iron core 51 is equipped with rotor core bulge loop 54, rotor core far from an end face of straight pan portion boss 35 Bulge loop 54 is equipped with bulge loop counterbore 55 and the second pinhole 514, and bulge loop counterbore 55 and straight pan portion boss screw hole 36 are one by one relatively simultaneously Fixation disc type motor rotor core 51 is fixed on straight pan portion boss 35 by penetrating screw.First pinhole 316 and second Pinhole 514 is corresponding, and first the both ends of fitting insertion pin 317 and pin 317 exceed the first pin in the first pinhole 316 Hole 316 can be directed at the insertion of pin 317 with the second pinhole 514 just when installing disk type electric motor rotor 5, easy for installation, positioning Precisely.

The rear end of the drive end bearing bracket 1 and the front end of rear end cap 2 are equipped with disk type electric machine stator 6, the disk type electric machine stator 6 Including disk type motor stator core 61 and the circumferential disk type electric machine stator winding 62 being evenly arranged on disk type motor stator core 61, institute The end face for stating disk type electric machine stator winding 62 is equipped with stator core locating convex block 63.

The back-end central of the drive end bearing bracket 1 is equipped with preceding round plate inward flange 14, and the rear end of drive end bearing bracket 1 is located in preceding round plate Recessed bar 16 is positioned equipped with preceding round plate in flange 14, runs through in preceding round plate positioning recessed bar 16 and is equipped with prelocalization recessed bar ejection hole 17, the outer rim of the disk type motor stator core 61 of the disk type electric machine stator 6 on drive end bearing bracket 1 and preceding round plate inward flange 14 Round plate positions recessed bar 16, stator core convex before inner edge interference fit and the corresponding fitting of stator core locating convex block 63 are inserted into Block 63 is positioned when being bonded and facilitating installation with preceding round plate positioning recessed bar 16, and disk type electric machine stator 6 is difficult to take when disassembled When lower, it can be ejected in hole 17 in prelocalization recessed bar and be screwed into jackscrew and eject disk type electric machine stator 6, wherein disk type electric machine stator 6 Outer rim can also reduce motor volume also without departing from the inner edge of ring disk part 33, so that compact overall structure.

The front end center of the rear end cap 2 is equipped with rear disk portion flange 24, and the front end of rear end cap 2 is located in rear disk portion It is equipped with rear disk portion in flange 24 and positions recessed bar 26, positioning recessed bar ejection hole after being equipped with is run through in rear disk portion positioning recessed bar 26 27, in the outer rim and rear disk portion flange 24 of the disk type motor stator core 61 of the disk type electric machine stator 6 of rear end cap 2 Edge interference fit and the corresponding fitting insertion rear disk portion positioning recessed bar 26 of stator core locating convex block 63.

Disc type electric machine air gap is formed between corresponding disk type electric machine stator 6 and disk type electric motor rotor 5.

The circumferential uniformly rotor core raised line 56 in periphery on disk type electric motor rotor iron core 51 positioned at rotor core bulge loop 54, phase Disk type electric motor rotor magnet steel 52,51 last week of disk type electric motor rotor iron core are fitted between adjacent two rotor core raised lines 56 To the partition 53 for being equipped with covering disk type electric motor rotor magnet steel 52.

The partition 53 is bonded an end face of disk type electric motor rotor magnet steel 52, and the rotor core raised line 56 is equipped with raised line Screw hole 57 and pillar jack 58, the center of the partition 53 are equipped with partition recessed portion 59, the partition recessed portion 59 be equipped with The corresponding recessed portion of raised line screw hole 57 perforation 510 simultaneously penetrates recessed portion perforation 510 and raised line spiral shell by partition fixing screws 513 Fixation of the partition 53 on disk type electric motor rotor iron core 51 is realized in hole 57, and fitting insertion pillar is additionally provided on partition recessed portion 59 and is inserted The recessed portion pillar 512 in hole 58 cooperates positioning when being installed by recessed portion pillar 512 and pillar jack 58, and installation is more It is convenient to add.

The interior outer rim of partition 53 is equipped with protective edge 511, and the protective edge 511 positioned at 53 outer rim of partition is bonded disk type electric motor rotor magnetic The outer rim of steel 52 and the end face for resisting disk type electric motor rotor iron core 51, the protective edge 511 positioned at 53 inner edge of partition are bonded disc type electric machine The inner edge of rotor magnetic steel 52 and the end face for resisting rotor core bulge loop 54, each disk type electric motor rotor magnet steel 52 are located at corresponding two Between the partition recessed portion 59 of a partition 53.

Disk type electric machine stator 6, disk type electric motor rotor 5 (including shaft 3, disk type electric motor rotor iron core 51, disk type electric motor rotor The components such as magnet steel 52) and disc type electric machine air gap composition disc type electric machine.The disc type electric machine three of radial magnetic field motor and its two sides Revolving speed must be identical, and stretch and eye left from right end axis, the rotor direction of rotation of three's motor also must identical (i.e. power output side To unanimously), the torque of such integrated motor is exactly three's superposition.

The front end center of the drive end bearing bracket 1 is connected with pressing plate 8, and drive end bearing bracket 1 includes preceding round plate 11, in preceding round plate 11 The heart is equipped with the drive end bearing bracket axis hole 15 of installation fore bearing 110, and the front end center of preceding round plate 11 is equipped with the pressure of the fitting installation of supply plate 8 Panel seat 18, is circumferentially evenly distributed with pressing plate seat screw hole 19 on pressing plate seat 18, on pressing plate 8 it is circumferentially uniformly distributed with pressing plate seat screw hole 19 correspondingly Pressing plate counterbore 81 and pressing plate counterbore 81 and pressing plate seat screw hole 19 are passed through by pressing plate fixing screws 82 realize pressing plate 8 in drive end bearing bracket 1 On fixation.

The shaft 3 is connect by fore bearing 110 with drive end bearing bracket 1, and the center of the pressing plate 8 for shaft 3 equipped with passing through Pressing plate axis hole 83, the front end center of pressing plate 8 are equipped with lip-shaped sealed ring 88, and the specially front end center of pressing plate 8 is equipped with lip-type seal Mounting base 87 is enclosed, lip-shaped sealed ring 88 is installed in lip-shaped sealed ring mounting base 87.

The inner edge of the lip-shaped sealed ring 88 is equipped with the sealing lip 89 being interference fitted with the outer wall of shaft 3, the shaft 3 Outer wall and the opposite place of pressing plate axis hole 83 are equipped with dustband 84, and dustband 84 includes the cylindrical portion 810 being interference fitted with shaft 3 and edge The oblique baffle ring 811 that extends outward of outer wall of cylindrical portion 810, between the outer wall of cylindrical portion 810 and oblique baffle ring 811 and pressing plate 8 It does not contact and (has small―gap suture).The sealing performance at motor-shaft extending end is ensured by lip-shaped sealed ring 88 and dustband 84.

Waveform spring washer 85 and plain washer 86, the wave are fitted between the rear end and fore bearing 110 of the pressing plate 8 Shape spring washer 85 is between fore bearing 110 and plain washer 86.

The back-end central of the rear end cap 2 connects back cover 9, and rear end cap 2 includes rear disk portion 21, is located in rear disk portion 21 Rear disk portion inward flange 28 is equipped in rear disk portion flange 24 with one heart, the interior outer end of rear disk portion positioning recessed bar 26 is respectively coupled to Rear disk portion inward flange 28 and rear disk portion flange 24.The rear end of installation rear bearing 212 is equipped in rear disk portion inward flange 28 Lid axis hole 25, the rear end face center of round plate 21 are equipped with the back cover seat 29 for the fitting installation of back cover 9, are circumferentially evenly distributed on back cover seat 29 Back cover seat screw hole 210, it is circumferentially uniformly distributed on back cover 9 to consolidate with the one-to-one back cover counterbore 92 of back cover seat screw hole 210 and by back cover Determine screw 93 back cover 9 is fixed on rear end cap 2 across back cover counterbore 92 and back cover seat screw hole 210.Use is additionally provided on rear end cap 2 In the rear end cap cable hole 211 of threading.

The shaft 3 is connect by rear bearing 212 with rear end cap 2, and the front end center of the back cover 9, which is equipped with, resists rear bearing 212 rear shroud flange 91.

The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.

Claims

1. a kind of permanent magnet synchronous motor of high power density, the drive end bearing bracket (1) and rear end cap (2) being distributed including time interval are worn The casing (7) for being located at shaft (3) on drive end bearing bracket (1) and rear end cap (2), connecting drive end bearing bracket (1) and rear end cap (2), feature Be: the outer wall of the shaft (3) is connected with radial magnetic field motor rotor core (31), the radial magnetic field by key (314) Motor rotor core (31) includes straight pan portion (32) and the ring disk part (33) for being located at straight pan portion (32) outer rim, the ring disk part (33) Outer wall be circumferentially uniformly pasted with radial magnetic field motor magnet steel (38), the inner wall of the casing (7) interference fit is equipped with radial direction Magnetic field electric motor stator (4), between the inner edge of the radial magnetic field motor stator (4) and the outer rim of radial magnetic field motor magnet steel (38) Radial magnetic field motor air gap is formed, the center of the straight pan portion (32) is equipped with front and back symmetrically straight pan portion boss (35), Mei Gezhi It is connected on pan portion boss (35) disk type electric motor rotor (5), the rear end of the drive end bearing bracket (1) and the front end of rear end cap (2) are all provided with Have disk type electric machine stator (6), forms disc type electric machine gas between corresponding disk type electric machine stator (6) and disk type electric motor rotor (5) Gap.

2. a kind of permanent magnet synchronous motor of high power density as described in claim 1, it is characterised in that: the ring disk part (33) Outer wall is circumferentially evenly distributed with ring disk part groove (34), and fitting plugs the parting bead (315) that front and back extends in the ring disk part groove (34), surpasses The two sidewalls of the parting bead (315) of ring disk part groove (34) outside are bonded the side of two neighboring radial magnetic field motor magnet steel (38) respectively out The front/rear end of wall, the ring disk part (33) is fitted with ring flat-plate (310), circumferentially uniformly distributed for parting bead on the ring flat-plate (310) (315) be bonded across parting bead perforate (312).

3. a kind of permanent magnet synchronous motor of high power density as claimed in claim 2, it is characterised in that: the radial magnetic field motor The front/rear end of magnet steel (38) is equipped with magnet steel location hole (39), circumferentially uniformly distributed corresponding fitting insertion magnetic on the ring flat-plate (310) The ring flat-plate pillar (311) of steel location hole (39).

4. a kind of permanent magnet synchronous motor of high power density as described in claim 1, it is characterised in that: the disk type electric motor rotor It (5) include the disk type electric motor rotor iron core (51) being jointly mounted on straight pan portion boss (35), the disk type electric motor rotor iron core (51) center is equipped with rotor core bulge loop (54) far from an end face of straight pan portion boss (35), disk type electric motor rotor iron core (51) The upper periphery positioned at rotor core bulge loop (54) is circumferential to be evenly distributed with rotor core raised line (56), two neighboring rotor core raised line (56) Between be fitted with disk type electric motor rotor magnet steel (52), be circumferentially on the disk type electric motor rotor iron core (51) cover disc type electricity The partition (53) of machine rotor magnet steel (52).

5. a kind of permanent magnet synchronous motor of high power density as claimed in claim 4, it is characterised in that: partition (53) fitting One end face of disk type electric motor rotor magnet steel (52), the rotor core raised line (56) are equipped with raised line screw hole (57) and pillar jack (58), the center of the partition (53) is equipped with partition recessed portion (59), and the partition recessed portion (59) is equipped with and raised line screw hole (57) corresponding recessed portion is perforated (510), and the recess of fitting insertion pillar jack (58) is additionally provided on partition recessed portion (59) Portion's pillar (512), the interior outer rim of partition (53) are equipped with protective edge (511), and the protective edge (511) for being located at partition (53) outer rim is bonded disk The outer rim of formula motor rotor magnetic steel (52) and the end face for resisting disk type electric motor rotor iron core (51) are located at the shield of partition (53) inner edge The inner edge of side (511) fitting disk type electric motor rotor magnet steel (52) and the end face for resisting rotor core bulge loop (54), each disc type electricity Machine rotor magnet steel (52) is located between the partition recessed portion (59) of corresponding two partitions (53).

6. a kind of permanent magnet synchronous motor of high power density as described in claim 1, it is characterised in that: the disk type electric machine stator (6) include disk type motor stator core (61) and the circumferential disk type electric machine stator being evenly arranged on disk type motor stator core (61) around One end face of group (62), the disk type electric machine stator winding (62) is equipped with stator core locating convex block (63).

7. a kind of permanent magnet synchronous motor of high power density as claimed in claim 6, it is characterised in that: the drive end bearing bracket (1) Back-end central is equipped with preceding round plate inward flange (14), before the rear end of drive end bearing bracket (1) is located at that preceding round plate inward flange (14) is interior and is equipped with Round plate positions recessed bar (16), is located at the outer of the disk type motor stator core (61) of the disk type electric machine stator (6) on drive end bearing bracket (1) Disk before edge fitting corresponding with the inner edge of preceding round plate inward flange (14) interference fit and stator core locating convex block (63) is inserted into Portion positions recessed bar (16), and the front end center of the rear end cap (2) is equipped with rear disk portion flange (24), the front end of rear end cap (2) It is equipped with rear disk portion positioning recessed bar (26) in rear disk portion flange (24), is located at the disk type electric machine stator of rear end cap (2) (6) outer rim of disk type motor stator core (61) and the inner edge interference fit and stator core of rear disk portion flange (24) are fixed Corresponding fitting insertion rear disk portion positioning recessed bar (26) of position convex block (63).

8. a kind of permanent magnet synchronous motor of high power density as described in claim 1, it is characterised in that: the drive end bearing bracket (1) Front end center is connected with pressing plate (8), and the shaft (3) is connect by fore bearing (110) with drive end bearing bracket (1), the pressing plate (8) Center is equipped with the pressing plate axis hole (83) passed through for shaft (3), and the front end center of pressing plate (8) is equipped with lip-shaped sealed ring (88), described The inner edge of lip-shaped sealed ring (88) is equipped with the sealing lip (89) being interference fitted with the outer wall of shaft (3), the outer wall of the shaft (3) Opposite place is equipped with dustband (84) with pressing plate axis hole (83), is fitted between the rear end and fore bearing (110) of the pressing plate (8) Waveform spring washer (85) and plain washer (86), the waveform spring washer (85) are located at fore bearing (110) and plain washer (86) Between.

9. a kind of permanent magnet synchronous motor of high power density as described in claim 1, it is characterised in that: the rear end cap (2) Back-end central connects back cover (9), and the shaft (3) is connect by rear bearing (212) with rear end cap (2), before the back cover (9) End center is equipped with the rear shroud flange (91) for resisting rear bearing (212).

10. a kind of permanent magnet synchronous motor of high power density as described in claim 1, it is characterised in that: the radial magnetic field electricity Machine stator (4) includes radial magnetic field motor stator core (41) and is circumferentially evenly arranged on radial magnetic field motor stator core (41) Radial magnetic field motor stator winding (42), the outer wall of the radial magnetic field motor stator core (41) and the inner wall mistake of casing (7) It is full of cooperation.