阅读说明：本技术 电滚筒永磁同步电动机 (Electric drum permasyn morot ) 是由 王宗培 王岗 于 2019-10-10 设计创作，主要内容包括：本发明公开了电滚筒永磁同步电动机,包括前轴承、外转子、内定子、后轴承,所述外转子套设在所述内定子外,所述外转子的两端分别与前轴承的外圈及后轴承的外圈固定连接,内定子内穿设有与内定子固定连接固定轴,固定轴的两端分别与前轴承的内圈和后轴承的内圈固定连接,所述外转子包括由14个磁极瓦片围成的圆环形永磁体层；所述内定子包括铁芯和绕组,所述铁芯含12槽,绕组为6个线圈的三相绕组,第一齿和第七齿上的两个线圈串联或并联为U相绕组,第三齿和第九齿上的两个线圈串联或并联为V相绕组,第五齿和第十一齿上的两个线圈串联或并联为W相绕组,三相绕组星接或角接引出。本发明提高了电动机的转矩密度及性能。(The invention discloses electric drum permasyn morots, including fore bearing, outer rotor, inner stator, rear bearing, the outer rotor is set in outside the inner stator, the both ends of the outer rotor are fixedly connected with the outer ring of the outer ring of fore bearing and rear bearing respectively, it is equipped in inner stator and is fixedly connected with fixing axle with inner stator, the both ends of fixing axle are fixedly connected with the inner ring of the inner ring of fore bearing and rear bearing respectively, and the outer rotor includes the round ring magnet layer surrounded by 14 magnetic pole tiles；The inner stator includes iron core and winding, the iron core contains 12 slots, winding is the three-phase windings of 6 coils, two coil serial or parallel connections on first tooth and the 7th tooth are U phase winding, two coil serial or parallel connections on third tooth and the 9th tooth are V phase winding, two coil serial or parallel connections on 5th tooth and the 11st tooth are W phase winding, and three-phase windings star connects or corner connection is drawn.The present invention improves the torque density and performance of motor.)

1. electric drum permasyn morot, it is characterised in that: described outer including fore bearing, outer rotor, inner stator, rear bearing Rotor is set in outside the inner stator, and the both ends of the outer rotor are fixed with the outer ring of fore bearing and the outer ring of rear bearing respectively to be connected Connect, be equipped with the fixing axle being fixedly connected with inner stator in inner stator, the both ends of fixing axle respectively with the inner ring of fore bearing and after The inner ring of bearing is fixedly connected, and outer rotor establishes the rotation connection between fixing axle by fore bearing and rear bearing, described outer Rotor includes the round ring magnet layer surrounded by 14 magnetic pole tiles；The inner stator includes iron core and winding, the iron core Including 12 slots, the winding is the three-phase windings of 6 coils, wherein two on the first tooth and the 7th tooth of the slot tooth of iron core Coil serial or parallel connection is U phase winding, and two coil serial or parallel connections on third tooth and the 9th tooth are V phase winding, the 5th tooth It is W phase winding with two coil serial or parallel connections on the 11st tooth, three-phase windings star connects or corner connection is drawn.

2. electric drum permasyn morot as described in claim 1, it is characterised in that: the outer rotor further includes permanent magnet End ring after front end ring and permanent magnet, one of them of end ring on one of end face of the permanent magnet front end ring and after permanent magnet It is each provided with 14 protrusions along the distribution of its even circumferential on end face, is respectively set on the end face at the both ends of the round ring magnet layer 14 interconnecting pieces are equipped with, end ring passes through 14 protrusions thereon and the circular ring shape forever respectively after permanent magnet front end ring and permanent magnet 14 interconnecting pieces at magnet layer both ends match connection.

3. electric drum permasyn morot as claimed in claim 2, it is characterised in that: set on the end face of the magnetic pole tile It is equipped with jack, 14 interconnecting pieces are to be separately positioned in the jack of the end face of 14 magnetic pole tiles.

4. electric drum permasyn morot as described in claim 1, it is characterised in that: the winding is the three of 6 coils Phase Single-layer Windings.

5. electric drum permasyn morot as described in claim 1, it is characterised in that: the iron core is by silicon steel sheet punching press system At.

6. electric drum permasyn morot as described in claim 1, it is characterised in that: the iron core by 0.35mm thickness silicon Steel disc punching press is made.

7. electric drum permasyn morot as described in claim 1, it is characterised in that: the inner stator further includes pressing ring, The pressing ring is set between iron core and fixing axle.

8. electric drum permasyn morot as described in claim 1, it is characterised in that: surface cover outside the outer ring of the fore bearing And if be fixed with drive end bearing bracket, the first card slot is provided on the outside of the drive end bearing bracket, the front end of the outer rotor is provided with the first card Convex, first card convex and the fixed clamping of first card slot, the outer ring outside of the rear bearing are arranged and are fixed with rear end cap, Be provided with the second card slot on the outside of the rear end cap, the rear end of the outer rotor is provided with the second card convex, second card convex with The fixed clamping of second card slot.

9. electric drum permasyn morot as described in claim 1, it is characterised in that: the one of the drive end bearing bracket or rear end cap Side also sets up magnetic coder.

10. electric drum permasyn morot as claimed in claim 9, it is characterised in that: be additionally provided with outside the encoder Encoder cover, the encoder cover are fixed with the drive end bearing bracket or rear end cap.

Technical field

The present invention relates to motor technology fields, and in particular to electric drum permasyn morot.

Background technique

The development of logistics delivery industry, transmission and sorting line need a large amount of electric drums therefore to develop and be made into roller Integrated outer rotor permanent magnet motor.Performance indicator requirement with the raising of transmission and sorting speed, to motor It is higher, but drums inside bulk is limited, increases the difficulty of the manufacture of motor, is not easy to reach ideal effect.

Such as the selection of rotor number of poles, theoretically any number of pole-pairs 1,2,3,4,5 ... to pole (2,4,6,8, 10 ... a pole) it is ok, it not only influences the utilization rate index and craftsmanship of motor, to fixed also together with number of stator slots The size of position torque has conclusive influence, most important to the permasyn morot of servo-drive, and especially mainstream produces Product general-purpose servo motor line product all makes every effort to consider from manufacturing process, utilization rate index and location torque etc., selects one The cooperation of optimal rotor number of poles and number of stator slots.Investigate 10 years pervious small seat No. general-purpose servo series of products of foreign countries, base It is all the design of 8 pole stator of rotor, 9 slot in sheet.Started before several years, be substantially all the design for being changed to 10 pole stator of rotor, 12 slot, Effective stock utilization (electric driving force performance indicator) and the index of location torque are all significantly improved.The electricity rolling seen at present Cylinder motor, is also all the design of 10 pole, 12 slot, the outer diameter of electric drum most typically Φ 67mm, referring to standard universal servo 60 The motor of base, nominal torque the largest of about 2Nm, the nominal torque about 5Nm that electric drum requires, it is seen that the limit of electric drum bulk The characteristics of difficulty that system and motor touch the mark, electric drum is that the bulk of length direction is rich, and motor is made thinner Long torque and the power index that can substantially reach requirement, but the difficulty of manufacturing process is increased, it is not preferably to design.

Summary of the invention

Based on the deficiencies of the prior art, the present invention is intended to provide electric drum permasyn morot, improves external rotor permanent magnet The performances such as the torque density of synchronous electric drum motor, reduce production cost.

The technical solution of the present invention is as follows:

Electric drum permasyn morot, it is characterised in that: described including fore bearing, outer rotor, inner stator, rear bearing Outer rotor is set in outside the inner stator, and outer ring of the both ends of the outer rotor respectively with the outer ring of fore bearing and rear bearing is fixed Connection, is equipped with the fixing axle being fixedly connected with inner stator in inner stator, the both ends of fixing axle respectively with the inner ring of fore bearing and The inner ring of rear bearing is fixedly connected, and outer rotor establishes the rotation connection between fixing axle by fore bearing and rear bearing, described Outer rotor includes the round ring magnet layer surrounded by 14 magnetic pole tiles；The inner stator includes iron core and winding, the iron Core includes 12 slots, and the winding is the three-phase windings of 6 coils, wherein two on the first tooth and the 7th tooth of the slot tooth of iron core A coil serial or parallel connection is U phase winding, and two coil serial or parallel connections on third tooth and the 9th tooth are V phase winding, the 5th Two coil serial or parallel connections on tooth and the 11st tooth are W phase winding, and three-phase windings star connects or corner connection is drawn.

Further, the outer rotor further includes end ring after permanent magnet front end ring and permanent magnet, the permanent magnet front end ring One of end face on and permanent magnet after end ring one of end face on be each provided with along its even circumferential distribution 14 Protrusion is each provided with 14 interconnecting pieces, permanent magnet front end ring and permanent magnet on the end face at the both ends of the round ring magnet layer End ring passes through 14 protrusions thereon respectively and matches connection with 14 interconnecting pieces at round ring magnet layer both ends afterwards.

Further, jack is provided on the end face of the magnetic pole tile, 14 interconnecting pieces are to be separately positioned on 14 In the jack of the end face of a magnetic pole tile.

Further, the winding is the Three-phase Single-layer Windings of 6 coils.

Further, the iron core is made of silicon steel sheet punching press.

Further, the iron core is made of the silicon steel sheet punching press of 0.35mm thickness.

Further, the inner stator further includes pressing ring, and the pressing ring is set between iron core and fixing axle.

Further, drive end bearing bracket, the outside setting of the drive end bearing bracket are arranged and are fixed with outside the outer ring of the fore bearing There is the first card slot, the front end of the outer rotor is provided with the first card convex, first card convex and the fixed clamping of first card slot, It is arranged and is fixed with rear end cap outside the outer ring of the rear bearing, the second card slot is provided on the outside of the rear end cap, it is described outer The rear end of rotor is provided with the second card convex, second card convex and the fixed clamping of second card slot.

Further, the side of the drive end bearing bracket or rear end cap also sets up magnetic coder.

Further, encoder cover, the encoder cover and the drive end bearing bracket or rear end are additionally provided with outside the encoder Lid is fixed.

The invention has the benefit that the application rotor in the case where stator is still 12 slot is changed to 14 poles (7 pairs of pole), often Pole magnetic flux and number of poles are inversely proportional reductions, and the stator facewidth can accordingly become smaller, and groove area increase, torque density significantly increases, outside Rotor structure, under inner stator groove area limited situation, performance is significantly improved.

Detailed description of the invention

Fig. 1 is the overall structure diagram of the embodiment of the present invention；

Fig. 2 is the outer-rotor structure schematic diagram of the embodiment of the present invention；

Fig. 3 is the permanent magnet pole tile schematic diagram of the embodiment of the present invention；

Fig. 4 is the permanent magnet end ring structure schematic diagram of the embodiment of the present invention；

Fig. 5 is the inner stator structural schematic diagram of the embodiment of the present invention；

Fig. 6 is the inner-stator iron core punching and winding connection schematic diagram of the embodiment of the present invention.

Specific embodiment

Below with reference to the accompanying drawings and in conjunction with the embodiments the present invention is described in detail.It should be noted that in the feelings not conflicted Under condition, the feature in following embodiment and embodiment can be combined with each other.

As shown in Figs. 1-2, electric drum permasyn morot, including fore bearing 1, outer rotor 2, inner stator 3, rear bearing 4, The outer rotor 2 is set in outside the inner stator 3, the both ends of the outer rotor 2 respectively with the outer ring of fore bearing 1 and rear bearing 4 Outer ring be fixedly connected, inner stator 3 includes iron core 31 and the fixing axle 32 that is threaded through in iron core 31, the both ends difference of fixing axle 32 It is fixedly connected with the inner ring of the inner ring of fore bearing 1 and rear bearing 4, outer rotor 2 is established and fixed by fore bearing 1 and rear bearing 4 Rotation connection between axis 32, the outer rotor 2 include the round ring magnet layer 21 surrounded by 14 magnetic pole tiles 20, Surface Mount The width bp of formula permanent magnet pole is generally smaller than pole span τ, their ratioReferred to as pole embrace, α_pIt is larger, gas Gap flux density (fundamental wave maximum value) is just higher.The torque density of motor is proportional to air gap flux density (B_g1) round with specific electric load (As) The design of ring-shaped rotor Permanent-magnet layer is to allow a_pMaximum, B_g1Also reach highest, the present embodiment permanent-magnet synchronous motor rotor magnetic pole The characteristics of tile is pole embrace α_p=1, adjacent interpolar is not spaced, and 14 magnetic pole tiles form a whole ring form, significantly The torque density of motor is improved, in addition, improving and cutting as shown in figure 3, the inner circle of tile is that have radius identical with outer circle The utilization rate of permanent-magnet material when cutting tile, while making the non-uniform air-gap of pole (tile) and inner-stator iron core surface, it is intermediate The smaller waveform to air gap flux density distribution is improved.

In addition to this, the outer rotor 2 further includes end ring 23 after permanent magnet front end ring 22 and permanent magnet, and fixation is set in The outer rotor inner sleeve 24 of 2 outside of outer rotor, permanent magnet front end ring 22 is identical with the structure of end ring 23 after permanent magnet, as shown in figure 4, Be each provided on an end face of end ring 23 after the permanent magnet front end ring 22 and permanent magnet circumferentially equally distributed 14 it is convex 221 are played, is each provided with 14 interconnecting pieces, permanent magnet front end ring and permanent magnet on the end face at the both ends of the round ring magnet layer End ring passes through 14 protrusions thereon respectively and connect with 14 interconnecting pieces at round ring magnet layer both ends afterwards.This reality Applying 14 interconnecting pieces of example is the jack for being separately positioned on 14 magnetic pole tile end faces.The present embodiment round ring magnet layer two The end ring at end can guarantee that the tile of 14 pole is circumferentially strictly uniformly distributed, this improves motor operation to location torque is reduced Stationarity is critically important, while keeping the installation of tile more convenient.

As shown in Figure 5 and Figure 6, inner stator 3 further includes pressing ring 33, winding 34, skeleton 35 and lead-out wire 36, the present embodiment iron 31 punching of core be 12 slots, by 0.35mm thickness the punching of low-loss silicon steel material at.Winding 34 is the similar single of 12 slot, 6 coils Layer winding, wherein two coil serial or parallel connections on the first tooth and the 7th tooth of skeleton 35 are U phase winding, third tooth and the Two coil serial or parallel connections on nine teeth are V phase winding, and two coil serial or parallel connections on the 5th tooth and the 11st tooth are W Phase winding, three-phase windings star connects or corner connection is drawn by lead-out wire, in addition, the counter electromotive force of two coils of every phase is to be reversely connected same phase Position.

The three-phase fractional-slot centralization armature winding of general 12 slot stator core, is wound with 12 centralizations on 12 teeth Coil, every phase 4, for 5 pairs of poles or 7 for the motor of pole, 4 coils on the tooth of the 1st, 2,7 and 8 are a phase, each line The pitch (y) of circle is short distance for pole to 5, to 7 for pole be it is long away from, it is shorter than pole span (τ) fall and to grow all be 30 ° of electric angles Degree, so pitch percent is all k_p=cos15 °=0.9659, electromotive force 1 and 7 reversed same-phases in 4 coils, 8 and anti- To 2 same-phases, and with 1 phase phase difference, 30 ° of electrical angles, so breadth coefficient be k_d=cos15 °=0.9659, winding coefficient It is then k_ip=0.933.The present embodiment takes special Winding Design, be 12 6 coils of slot each slot inner conductor number of design not Becoming, the number of turns of each coil doubles, 6 coils of first, third, the five, the seven, the 9th and the 11st on tooth, and first and the 2 coils on seven teeth are a phase, first and the 7th reversed same-phase, breadth coefficient k_d=cos 0 °=1.0, pitch percent It is still k_p=0.9659, winding coefficient k_dp=0.9659, the total number of turns of winding is constant, and effective turn increases by 3.3%, almost without Increase other costs.

The pressing ring 33 is set between iron core and fixing axle, plays the role of being fixedly connected.

Drive end bearing bracket 5 is arranged and is fixed with outside the outer ring of the fore bearing 1, and the outside of the drive end bearing bracket 5 is provided with the first card Slot, the front end of the outer rotor inner sleeve 24 are provided with the first card convex, first card convex and the fixed clamping of first card slot, institute It states and rear end cap 6 is arranged and be fixed with outside the outer ring of rear bearing, the outside of the rear end cap 6 is provided with the second card slot, described to turn outside The rear end of sub- inner sleeve 24 is provided with the second card convex, second card convex and the fixed clamping of second card slot.

The side of the drive end bearing bracket 5 or rear end cap 6 also sets up the magnetic coder 7 of 2500 lines, also sets up outside the encoder 7 There is encoder cover 8, the encoder cover is fixed with the drive end bearing bracket or rear end cap.The encoder of the present embodiment have it is small in size at This low feature, the design with compact shape electric drum matches, and being able to satisfy electric drum difference occasion includes wanting for high-end applications It asks.

Embodiment belonging to above only expresses concentration embodiment of the invention, and the description thereof is more specific and detailed, but simultaneously Limitations on the scope of the patent of the present invention therefore cannot be interpreted as, it is noted that for those of ordinary skill in the art For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention Protect range.Therefore the scope of protection of the patent of the invention shall be subject to the appended claims.