CN214850707U - Special-shaped slot wedge for amorphous alloy permanent magnet motor - Google Patents
Special-shaped slot wedge for amorphous alloy permanent magnet motor Download PDFInfo
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- CN214850707U CN214850707U CN202120492745.XU CN202120492745U CN214850707U CN 214850707 U CN214850707 U CN 214850707U CN 202120492745 U CN202120492745 U CN 202120492745U CN 214850707 U CN214850707 U CN 214850707U
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- 229910000808 amorphous metal alloy Inorganic materials 0.000 title claims abstract description 82
- 239000005300 metallic glass Substances 0.000 claims abstract description 15
- 230000004323 axial length Effects 0.000 claims description 19
- 206010066054 Dysmorphism Diseases 0.000 claims description 8
- 210000000332 tooth crown Anatomy 0.000 abstract description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 13
- 238000000034 method Methods 0.000 description 10
- 239000000956 alloy Substances 0.000 description 7
- 238000009413 insulation Methods 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 238000004804 winding Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 5
- 238000004080 punching Methods 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000004677 Nylon Substances 0.000 description 3
- 229920001778 nylon Polymers 0.000 description 3
- 229910000976 Electrical steel Inorganic materials 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 210000003781 tooth socket Anatomy 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000005405 multipole Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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- Iron Core Of Rotating Electric Machines (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The utility model discloses a special-shaped slot wedge for metallic glass permanent-magnet machine, the middle part in cross-section is isosceles trapezoid, and trapezoidal upper portion is connected with and trapezoidal first rectangle of going to the bottom the complex, and trapezoidal sub-unit connection has and trapezoidal cooperation of upper base and bellied second rectangle. In the length direction of the special-shaped slot wedge, the inclined plane end arranged on the special-shaped slot wedge is provided with an L2 section, the height H1 of the second rectangle protrusion of the L2 section is 0.2mm higher than the height H01 of the stator notch, the side of the second rectangle close to the L2 section is provided with an L3 section, the height H2 of the L3 section protrusion is equal to the height H01 of the stator notch, the side of the second rectangle close to the L3 section is provided with an L4 section, the height of the L4 section protrusion is equal to the H1, the side of the second rectangle close to the L4 section is provided with an L3 section, L4 and L3 alternately appear, and the other end of the special-shaped slot wedge alternately appears. The permanent magnet rotor can not touch the tooth crown part of the amorphous alloy stator tooth, so that the purpose of protecting the inner circle of the amorphous alloy stator core from mechanical stress impact is achieved.
Description
Technical Field
The utility model relates to a motor manufacturing technical field, in particular to a dysmorphism slot wedge for metallic glass permanent-magnet machine.
Background
Compared with an asynchronous motor, the permanent magnet motor has the advantages of small volume, light weight and high efficiency. The iron-based amorphous alloy material has the advantages of high magnetic conductivity and low alternating-current iron core loss, particularly the high-frequency loss is only less than 10% of that of the traditional silicon steel sheet, and the iron-based amorphous alloy material is applied to a high-speed motor or a multi-pole logarithmic high-frequency motor and can be used for reducing the high-frequency iron core loss in detail. Therefore, the iron-based amorphous alloy material is applied to the permanent magnet motor, and the efficiency of the amorphous alloy high-speed permanent magnet motor can be obviously improved.
However, the amorphous alloy material is hard and brittle, and is also called as metallic glass, the magnetic conductivity of the amorphous alloy material can be greatly reduced by excessive mechanical stress during processing or assembly, and more seriously, in the process of assembling, maintaining or disassembling the permanent magnet motor, the permanent magnet rotor is attracted to the stator core laminated by the amorphous alloy strip material carelessly to collide, which not only affects the magnetic performance of the amorphous alloy, but also seriously, the amorphous alloy stator core can be collided with scraps, and the scraps are easily attracted by the permanent magnet rotor. When the motor rotates at a high speed, the amorphous alloy scraps can be thrown out at a high speed due to centrifugal force, and the potential safety hazard of the insulation of the motor winding is great.
Regarding the anti-collision measure of the amorphous alloy motor stator core, thin-wall nylon rings are added at two ends of the inner circle of the stator core for protection, but the thin-wall nylon rings only protect two ports of the inner circle of the amorphous alloy stator core, the axial middle part of the inner circle of the stator core still can be collided by the permanent magnet rotor, and in addition, the thin-wall nylon rings are also difficult to be fixed at two ends of the inner circle of the amorphous alloy stator core.
The method for fixing the amorphous alloy stator core and the motor base or the cooling water jacket, which is related to Chinese patents with the patent number of 201610222210.4, the publication number of CN105680588B, and the publication number of 2019, 05 and 10, is characterized in that the amorphous alloy stator core and the motor base are fixed by a plurality of non-conductive cylindrical pins in the circumferential direction, one axial end of the amorphous alloy stator core is fixed by a limit step of the motor base or the cooling water jacket, and the other axial end of the amorphous alloy stator core is fixed by a plurality of radial sunk screws.
The mounting structure of the radial motor amorphous alloy material stator and the base is characterized in that a plurality of radial circular through holes are formed in the wall surface of the base, 3 circular arc bosses with 2mm height uniformly distributed are arranged on the outer circumference of the stator, the outer circle of each circular arc boss is in clearance fit with the inner circle of the base, 3 gaps are formed on the outer circumference of the stator between the 3 circular arc bosses, epoxy resin is filled in the 3 gaps and the circular through holes in the base, and the axial relative positions of the stator of the motor and the base are positioned by utilizing the positioning steps at the inner circle of the base.
The amorphous alloy stator is fixed on the excircle of the stator core through the cylindrical pin or the arc boss and the epoxy resin, the excircle of the stator is protected from being influenced by concentrated mechanical stress to influence the magnetic performance of the amorphous alloy material, and the inner circle of the amorphous alloy stator core cannot be protected from being accidentally collided with the permanent magnet rotor.
The preparation method of the amorphous alloy motor stator core is characterized in that in the process of laminating the amorphous alloy stator core, metal sheets such as high-frequency silicon steel sheets, high-strength aluminum alloy sheets or magnesium alloy sheets are clamped at two ends and the middle part of the amorphous alloy stator core at intervals of certain thickness and are subjected to vacuum impregnation of high-temperature inorganic adhesive and wire cutting to form the amorphous alloy motor stator core, wherein the Chinese patents with the patent numbers of 201610221769.5, CN105703569B and 2018, 02 and 02 are published, and the metal sheets clamped at the two ends and the middle part of the stator core can avoid that a permanent magnet rotor accidentally collides with an amorphous alloy part in the inner circle of the stator core in the process of assembling or disassembling a motor. Although the patent can avoid the permanent magnet rotor from accidentally colliding with the inner circle of the amorphous alloy stator core, the magnetic conductivity and unit core loss of the metal sheets added at the two ends and the middle of the stator core are different from those of amorphous alloy, and the magnetic density and loss in the metal sheets are also different from those of the amorphous alloy part, so that the temperature rise of the metal sheets in the composite stator core is different from that of the amorphous alloy part; in addition, the radial thermal expansion rate of the metal sheet is different from that of the amorphous alloy, so that the metal sheet and the amorphous alloy part are possibly dislocated under the condition of overhigh temperature rise, the stator core is loosened, and the motor generates vibration and even the insulation of a motor winding is possibly damaged.
The convex magnetic slot wedge of the motor stator, which is related to Chinese patents with the patent number of 202021143504.6, the publication number of CN212258593U and the publication number of 12/29/2020/29/is characterized in that a convex block is arranged on the top surface of the slot wedge, and the width of the slot wedge is 1-3 mm smaller than the size of a slot shoulder of a stator punching sheet; the width of the lug is 0.1mm smaller than the width of the notch of the stator punching, and the top surface of the lug is 0.3mm lower than the notch of the stator punching. The convex magnetic slot wedge is mainly used for reducing the loss of an additional iron core caused by the tooth space of a stator and a rotor of the motor, the top surface of the convex block is 0.3mm lower than the top surface of the slot opening, and if the convex magnetic slot wedge is applied to an amorphous alloy motor, the inner circle of an amorphous alloy stator cannot be protected from being collided with a permanent magnet rotor.
The motor rotor special-shaped slot wedge is characterized in that the cross section of the slot wedge is of an inverted T-shaped structure, wherein the width of a mouth part of the inverted T-shaped cross section is 0.1-0.15mm smaller than the width of a tooth socket mouth, and the height of the mouth part is 0.1-0.2mm larger than the height of the tooth socket mouth, so that the problem that burrs and iron chips are difficult to clean due to intermittent cutting when the outer circle of a vehicle rotor is formed is solved. The slot wedge with the inverted T-shaped cross section has the advantages that although the height of the slot opening part is 0.1-0.2mm higher than that of the slot opening, in the motor machining process, the outer circle of the rotor needs to be turned, the part which is higher than the slot opening part is turned, the actual height is flush with the slot opening of the rotor, the outer circle of the rotor is smooth when being viewed on the whole, and the amorphous alloy stator core cannot be protected from colliding with the rotor. If the inverted T-shaped slot wedge is used, for a high-speed motor, the slot wedge in the inner circle of the stator is entirely higher than the part of the slot opening, so that the wind abrasion of the rotor is increased, and relatively large noise is brought.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's is not enough, provides a dysmorphism slot wedge for metallic glass permanent-magnet machine, and the purpose is at the in-process of metallic glass motor assembly or dismantlement, avoids permanent magnet rotor to collide with the excircle of metallic glass stator core's interior circle or external rotor motor metallic glass stator to metallic glass piece does not appear in the protection stator core.
The purpose of the utility model is realized through the following technical scheme:
the utility model provides a special-shaped slot wedge for metallic glass permanent-magnet machine, the cross-section of special-shaped slot wedge is special-shaped structure, the middle part in special-shaped structure cross-section is isosceles trapezoid, trapezoidal upper portion be connected with trapezoidal first rectangle of going to the bottom the complex, trapezoidal sub-unit connection with trapezoidal cooperation and bellied second rectangle at the bottom.
Further, the length L of the special-shaped slot wedge in the axial length direction of the motor is 6-10 mm longer than the axial length of the amorphous alloy stator core.
Furthermore, one end of the special-shaped slot wedge is provided with an inclined plane which is used for facilitating the special-shaped slot wedge to be inserted into the amorphous alloy stator core, and the inclined plane inclines from the first rectangle to the second rectangle.
Further, the inclined angle of the inclined plane is 44-46 degrees.
Furthermore, a Y-shaped structure used for facilitating the insertion of the special-shaped slot wedge into the amorphous alloy stator core is arranged on the first rectangle at the end part of the special-shaped slot wedge, and the structure and the inclined plane are arranged at the same end of the special-shaped slot wedge.
Further, in the length direction of the special-shaped slot wedge, an inclined plane end is arranged on the special-shaped slot wedge and is provided with an L2 section, the height H1 of the second rectangle protrusion of the L2 section is 0.2mm higher than the height H01 of the stator notch, the second rectangle is close to the L2 section side and is provided with an L3 section, the height H2 of the L3 section protrusion is equal to the height H01 of the stator notch, the second rectangle is close to the L3 section side and is provided with an L4 section, the height of the L4 section protrusion is equal to the H1, the second rectangle is close to the L4 section side and is provided with an L3 section, and the L4 section and the L3 section alternately appear and alternately appear at the other end of the special-shaped slot wedge.
Further, the other end of the profiled wedge is provided with a segment L5, and the height of the projection of the segment L5 is equal to H1.
Further, the lengths of the sections L2 and L5 are 1/10-1/6 of the length L of the profiled wedge.
The utility model has the advantages that:
1. dysmorphism slot wedge, convex second rectangle height is H1's part on its cross-section, highly being higher than the stator notch 0.2mm, this partial slot wedge that exceeds the notch is formed a virtual protrusion ring that circle diameter is little 0.4mm in the circle in amorphous alloy stator core than the stator, make permanent magnet rotor can not touch amorphous alloy stator tooth's tooth crown part, thereby reach the purpose that does not receive mechanical stress impact in the protection amorphous alloy stator core circle.
2. Dysmorphism slot wedge, bellied second rectangle height is H2, length is the slot wedge part of L3 on its cross-section, bellied second rectangle height is the same with the height of stator notch, the breach at notch position has been filled to the slot wedge arch of this part, forms glossy circular inner wall jointly with the stator tooth crown on the circle circumference in whole stator. This part amorphous alloy stator tooth crown seems to have the possibility of colliding with each other with the permanent magnet rotor, in fact, according to permanent magnet motor stator core length, amorphous alloy stator core's internal diameter, permanent magnet rotor diameter, protruding rectangular height and the size of air gap, carry out reasonable selection to the axial length L2 that the height of special-shaped slot wedge protruding rectangle is higher than the part of notch 0.2mm, protruding rectangular height H2 and notch height looks same part's axial length L3, can avoid this part amorphous alloy tooth crown to be collided with by the permanent magnet rotor completely.
3. The utility model discloses a so high as the bellied second rectangle in cross-section and notch are selected to dysmorphism slot wedge, axial length appears for L3's interval, rather than the slot wedge on whole axial length adopts the bellied rectangle in cross-section height to exceed notch 0.2mm entirely, length that appears for making the interval is even for the physical air gap of L3 part, do benefit to the stator tooth crown of this part of in time transmitting the rotor because of the heat energy that the eddy current loss produced when permanent-magnet machine is rotatory, convenient heat dissipation, reduce the noise of permanent-magnet machine at high-speed rotatory in-process simultaneously.
Drawings
FIG. 1 is a sectional view of a stator and a rotor of an amorphous alloy high-speed permanent magnet motor (a slot wedge protrudes out of a slot opening);
FIG. 2 is a front view of a profiled slot wedge;
FIG. 3 is a left side view of the shaped slot wedge;
FIG. 4 is a sectional view taken along the line A-A of the profiled slot wedge;
FIG. 5 is a dimension example of a sectional view of the profiled slot wedge;
FIG. 6 is a sectional view of the profiled slot wedge in the direction B-B;
FIG. 7 is a cross-sectional view of a stator and a rotor of the amorphous alloy high-speed permanent magnet motor (the slot wedge has no protruding notch);
fig. 8 is a cross-sectional view of a stator of an amorphous alloy permanent magnet motor.
In the figure, 1-amorphous alloy stator iron core, 2-amorphous alloy stator winding, 3-motor stator slot insulation, 4-amorphous alloy stator tooth, 5-special-shaped slot wedge and 6-permanent magnet rotor.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-8, the present invention provides a technical solution:
the utility model provides a special-shaped slot wedge for metallic glass permanent-magnet machine, special-shaped slot wedge's cross-section is the dysmorphism structure, and the middle part in special-shaped structure cross-section is isosceles trapezoid, and trapezoidal upper portion is connected with and trapezoidal first rectangle of going to the bottom complex, and trapezoidal sub-unit connection has and trapezoidal cooperation of the upper base and bellied second rectangle. The length L of the special-shaped slot wedge in the axial length direction of the motor is 6-10 mm longer than the axial length of the amorphous alloy stator core. One end of the special-shaped slot wedge is provided with an inclined plane which is used for facilitating the special-shaped slot wedge to be inserted into the amorphous alloy stator core, and the inclined plane inclines from the first rectangle to the second rectangle. The inclined angle of the inclined plane is 44-46 degrees. The first rectangle at the end part of the special-shaped slot wedge is provided with a Y-shaped slot wedge which is used for facilitating the insertion of the special-shaped slot wedge into the amorphous alloy stator core, and the Y-shaped slot wedge and the inclined plane are arranged at the same end of the special-shaped slot wedge. In the length direction of the special-shaped slot wedge, the inclined plane end arranged on the special-shaped slot wedge is provided with an L2 section, the height H1 of the second rectangle protrusion of the L2 section is 0.2mm higher than the height H01 of the stator notch, the side of the second rectangle close to the L2 section is provided with an L3 section, the height H2 of the L3 section protrusion is equal to the height H01 of the stator notch, the side of the second rectangle close to the L3 section is provided with an L4 section, the height of the L4 section protrusion is equal to the H1, the side of the second rectangle close to the L4 section is provided with an L3 section, L4 and L3 alternately appear, and the other end of the special-shaped slot wedge alternately appears. The other end of the special-shaped slot wedge is provided with a section L5, and the height of the projection of the section L5 is equal to H1. The lengths of the sections L2 and L5 are 1/10-1/6 of the length L of the special-shaped wedge.
The width W of a first rectangle at the bottom of the section of the slot wedge is 1-2mm smaller than the width b1 of the stator punching sheet slot shoulder; an included angle theta between slopes on two sides of the trapezoid of the slot wedge section and the bottom edge of the trapezoid is the same as a slot shoulder angle alpha at the slot of the stator punching sheet; the width W1 of a second rectangular bulge at the trapezoidal top of the section of the slot wedge is 0.1-0.2mm smaller than the width b01 of the slot opening, and the height H1 of the rectangular bulge is 0.2mm higher than the height H01 of the slot opening or equal to the height H01 of the slot opening; the total height H3 of the section of the special-shaped slot wedge is not less than 2mm so as to ensure certain mechanical strength.
The special-shaped slot wedge of the utility model has a section of protruding rectangle with a section higher than the notch of the motor stator by 0.2mm in the axial length direction; the wedge segments are arranged next to each other, and the height of the rectangular raised portions in cross section is the same as that of the notches, so that the wedge segments alternate in the axial direction to form the entire wedge. Meanwhile, the two ends of the slot wedge are both raised rectangles on the cross section of the slot wedge, the height of each raised rectangle is 0.2mm higher than the notch of the motor stator, and the lengths of the two parts are 1/10-1/6 of the length of the whole slot wedge, so that the purpose that the amorphous alloy stator core 1 of the permanent magnet motor is protected from being collided by the permanent magnet rotor 6 in the assembling or disassembling process is achieved.
In some embodiments, the method of implementing the present invention is described by taking a high-speed permanent magnet motor with a permanent magnet rotor 6 having an outer diameter of 56.6mm, an iron-based amorphous alloy stator core 1 having an inner diameter of 68mm, a core length of 90mm, and an amorphous alloy stator core 1 having 24 slots as an example. The sectional view of the stator and the rotor of the amorphous alloy high-speed permanent magnet motor is shown in figure 1.
The width of the slot shoulder of the amorphous alloy stator core 1 is 6.4mm, the width b01 of the slot opening is 2.0mm, the height h01 of the slot opening is 0.8mm, the angle alpha of the slot shoulder is 28 degrees, and the unilateral air gap of the permanent magnet motor is 1.2 mm.
According to the method of the present invention, the sectional view of the special-shaped slot wedge 5 at the portion of the protruding notch is shown in fig. 4.
In the attached figure 4, the width W of the bottom rectangle in the section of the slot wedge is 5.4mm, and the included angle between the trapezoidal slope in the section of the slot wedge and the width W of the bottom rectangle is 28.0 degrees and is the same as the slot shoulder angle; the height H1 of the convex rectangle on the section of the slot wedge is 1.0mm, which is 0.2mm higher than the height H01 of the slot opening, and the width W1 of the convex rectangle is 1.8mm, which is 0.2mm smaller than the width b01 of the slot opening. The overall height of the section of the special-shaped slot wedge 5 is 2.5 mm. The specific dimensions are shown in fig. 5.
The schematic diagrams of the special-shaped slot wedge 5 in the axial length direction of the amorphous alloy stator core 1 are respectively a front view of the special-shaped slot wedge 5 shown in fig. 2 and a left view of the special-shaped slot wedge 5 shown in fig. 3.
As shown in fig. 3, there is a slope at one end of the shaped wedge 5 to facilitate the fitting of the shaped wedge 5 into the notch. The projection length L1 of the end slope of the special-shaped slot wedge 5 to the axial length direction is 3.0 mm; then, a section of slot wedge with the height H1 of a rectangular protrusion on the cross section being 1.0mm is taken, H1 is 0.2mm higher than the height of a slot opening, and the axial length of the section is L2 which is 8 mm; in the axial length direction, a section of the wedge with the height H2 of a convex rectangle of a section is taken as a 0.8mm wedge, H2 is the same as the height H01 of the stator notch, the section of the special-shaped wedge 5 is shown in the figure 6, and the axial length L3 is taken as 5 mm. In the axial length direction, the height H1 of the cross-sectionally convex rectangle is 1.0mm of the slot wedge, which is 0.2mm higher than the height H01 of the stator slot opening, and the length of the part is L4 is 5 mm. Thus, after 7 times of alternation of L4 and L3, the other end of the special-shaped wedge 5 is a part with a height H1 of a section of a convex rectangle of 1.0mm and 0.2mm higher than the height H01 of the stator notch, and the axial length L5 of the end part of the wedge is about 8 mm. So that the total axial length L of the entire wedge 5 is 98 mm.
In this embodiment, the material of the special-shaped slot wedge 5 is 9334 double-horse glass cloth board with H-level insulation.
As shown in the attached figure 1, after the amorphous alloy stator winding 2 is placed in the stator slot of the amorphous alloy stator core 1 and the motor stator slot insulation 3 is processed, 24 same special-shaped slot wedges 5 are driven into 24 stator slots from the notch at one end of the amorphous alloy stator core 1 by a slope end in sequence. Fig. 1 shows a schematic view of one of the stator winding 2, the slot insulation 3 and the shaped wedge 6, the other stator slots only show the shaped wedge 5, and fig. 1 shows a cross-sectional view of the stator with a cross-sectional protrusion rectangle height H1 of 1.0mm for the shaped wedge 5; in fact, motor stator slot insulation 3 has all been placed in 24 inslots of amorphous alloy stator core 1, amorphous alloy stator winding 2 has been placed according to the winding distribution diagram the utility model discloses a dysmorphism slot wedge 5. The special-shaped slot wedge 5 in each stator slot of the section protrudes the notch by 0.2mm, the permanent magnet rotor 6 can possibly collide with the part of the slot wedge protruding notch, and the tooth crown part of the amorphous alloy stator core 1 collided with by the permanent magnet rotor 6 is blocked, so that the inner circle of the amorphous alloy stator core 1 is protected from mechanical stress impact.
FIG. 7 is a sectional view of a non-protruding slot of a slot wedge 5 of an amorphous alloy high-speed permanent magnet motor, the length of the non-protruding slot wedge 5 corresponding to FIG. 3 is L3, the slot wedge is flush with a stator slot, the protruding rectangle of the slot wedge section just fills the slot part, the inner circle of the stator is smooth, a smooth thin-wall cylinder with the wall thickness of 1.2mm is formed between the inner circle of the stator of the L3 section and a permanent magnet rotor, when the motor rotates, the air flow of the thin-wall cylinder can well flow, the heat generated by the eddy current loss of the permanent magnet rotor 6 can be timely transmitted to an amorphous alloy stator core 1, the heat dissipation is convenient, and meanwhile, the noise caused by the high-speed rotation of the motor can be reduced.
Fig. 8 is an use the utility model discloses special-shaped slot wedge 5's metallic glass stator core 1's stator section view, can see out on the axial direction, circle both ends are protected by the partial slot wedge of protrusion stator notch in metallic glass stator core 1, circle middle part in 1 of stator core, one section glossy interior circle, the partial slot wedge of one section protrusion stator notch in interval, thereby protected at motor assembly or dismantlement in-process, circle in 1 of metallic glass stator core can not receive colliding with of permanent magnet rotor 6, receive the influence of mechanical stress impact to its magnetic properties in order to avoid circle in 1 of metallic glass stator core.
The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
Claims (8)
1. The utility model provides a dysmorphism slot wedge for metallic glass permanent-magnet machine which characterized in that: the section of the special-shaped slot wedge is of a special-shaped structure, the middle of the section of the special-shaped structure is of an isosceles trapezoid shape, the upper portion of the trapezoid is connected with a first rectangle matched with the lower bottom of the trapezoid, and the lower portion of the trapezoid is connected with a second rectangle matched with the upper bottom of the trapezoid and protruding.
2. The special-shaped slot wedge for the amorphous alloy permanent magnet motor as claimed in claim 1, wherein: the length L of the special-shaped slot wedge in the axial length direction of the motor is 6-10 mm longer than the axial length of the amorphous alloy stator core.
3. The special-shaped slot wedge for the amorphous alloy permanent magnet motor as claimed in claim 1 or 2, wherein: one end of the special-shaped slot wedge is provided with an inclined plane which is used for facilitating the special-shaped slot wedge to be inserted into the amorphous alloy stator core, and the inclined plane inclines from the first rectangle to the second rectangle.
4. The special-shaped slot wedge for the amorphous alloy permanent magnet motor as claimed in claim 3, wherein: the inclined angle of inclined plane is 44 ~ 46.
5. The special-shaped slot wedge for the amorphous alloy permanent magnet motor as claimed in claim 3, wherein: the special-shaped slot wedge is characterized in that a Y-shaped slot wedge is arranged on the first rectangle at the end part of the special-shaped slot wedge, and the special-shaped slot wedge is convenient to insert into the amorphous alloy stator core and is arranged at the same end of the special-shaped slot wedge with the inclined plane.
6. The special-shaped slot wedge for the amorphous alloy permanent magnet motor as claimed in claim 1, wherein: in the length direction of the special-shaped slot wedge, an inclined plane end is arranged on the special-shaped slot wedge and is provided with an L2 section, the height H1 of the second rectangle protrusion of the L2 section is 0.2mm higher than the height H01 of the stator notch, the second rectangle is close to the L2 section side and is provided with an L3 section, the height H2 of the L3 section protrusion is equal to the height H01 of the stator notch, the second rectangle is close to the L3 section side and is provided with an L4 section, the height of the L4 section protrusion is equal to the H1, the second rectangle is close to the L4 section side and is provided with an L3 section, and the L4 section and the L3 section alternately appear and alternately appear at the other end of the special-shaped slot wedge.
7. The special-shaped slot wedge for the amorphous alloy permanent magnet motor as claimed in claim 6, wherein: the other end of the special-shaped slot wedge is provided with an L5 section, and the height of the L5 section of protrusion is equal to H1.
8. The special-shaped slot wedge for the amorphous alloy permanent magnet motor as claimed in claim 7, wherein: the lengths of the L2 section and the L5 section are 1/10-1/6 of the length L of the special-shaped wedge.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120492745.XU CN214850707U (en) | 2021-03-08 | 2021-03-08 | Special-shaped slot wedge for amorphous alloy permanent magnet motor |
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| CN202120492745.XU CN214850707U (en) | 2021-03-08 | 2021-03-08 | Special-shaped slot wedge for amorphous alloy permanent magnet motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112953059A (en) * | 2021-03-08 | 2021-06-11 | 华北电力大学 | Amorphous alloy high-speed outer rotor permanent magnet motor |
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2021
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112953059A (en) * | 2021-03-08 | 2021-06-11 | 华北电力大学 | Amorphous alloy high-speed outer rotor permanent magnet motor |
| CN112953059B (en) * | 2021-03-08 | 2024-09-24 | 华北电力大学 | Amorphous alloy high-speed outer rotor permanent magnet motor |
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Granted publication date: 20211123 |