CN211429017U - Stator core of motor - Google Patents
Stator core of motor Download PDFInfo
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- CN211429017U CN211429017U CN202020542062.6U CN202020542062U CN211429017U CN 211429017 U CN211429017 U CN 211429017U CN 202020542062 U CN202020542062 U CN 202020542062U CN 211429017 U CN211429017 U CN 211429017U
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- stator
- tooth punching
- lamination
- shaped single
- punching sheet
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Abstract
A stator core of a motor belongs to the field of motors. The lamination comprises a plurality of layers of lamination A and lamination B which are laminated in sequence; the lamination A is a circular structure formed by sequentially arranging a plurality of T-shaped single-tooth punching sheets, and the lamination B is a circular structure formed by sequentially arranging a plurality of Z-shaped single-tooth punching sheets. The utility model discloses T type monodentate towards lamination A and the Z type monodentate towards laminating in proper order that lamination B constitutes of piece constitution and fold and press, realize the interlocking between the two, promoted stator core's compactedness, guarantee the circularity of stator internal diameter simultaneously more easily.
Description
Technical Field
The utility model relates to the field of electric machines, especially, relate to a stator core of motor.
Background
The stator core of the existing permanent magnet motor, particularly a high-power low-speed permanent magnet motor, is generally formed by laminating a plurality of layers of annular stators, the annular stators are formed by splicing silicon steel sector stamped sheets along the circumferential direction, and the stator core laminated by the stamped sheets in a single shape has the problem of low compactness when in use.
SUMMERY OF THE UTILITY MODEL
The problem that the stator core compactness is not high for solving current fan-shaped towards piece and fold, the utility model provides a stator core of motor.
In order to achieve the above object, the utility model adopts the following technical scheme: a stator core of a motor comprises a plurality of layers of laminated sheets A and B which are laminated in sequence; the lamination A is a circular structure formed by sequentially arranging a plurality of T-shaped single-tooth punching sheets, and the lamination B is a circular structure formed by sequentially arranging a plurality of Z-shaped single-tooth punching sheets.
Furthermore, the T-shaped single-tooth punching sheet comprises a stator tooth A and a stator yoke A formed by extending the bottom of the stator tooth A along the rotating direction of the rotor and the rotating direction of the rotor respectively; the Z-shaped single-tooth punching sheet comprises stator teeth B and a stator yoke B formed by extending the bottoms of the stator teeth B along the rotation direction of the rotor.
Furthermore, the T-shaped single-tooth punching sheet and the Z-shaped single-tooth punching sheet are provided with communicated welding grooves for welding, and the T-shaped single-tooth punching sheet and the Z-shaped single-tooth punching sheet are also provided with communicated mounting holes A for inserting connecting pieces.
Further, the mounting hole A and the welding groove are connected in proportion and alternately.
Furthermore, a gap a is formed between a stator yoke a of a first T-shaped single-tooth punching sheet and a stator yoke a of a second T-shaped single-tooth punching sheet in two adjacent T-shaped single-tooth punching sheets in the lamination a, a gap B is formed between a stator yoke B of a first Z-shaped single-tooth punching sheet and a stator yoke B of a second Z-shaped single-tooth punching sheet in two adjacent Z-shaped single-tooth punching sheets in the lamination B, and the distance between the gap a and the two adjacent gaps B is equal on a virtual projection plane.
Further, the gap A is positioned on one side of the virtual center line of the stator slot, and the gap B is positioned on one side of the virtual center line of the stator tooth in the same direction.
Furthermore, the circle center of the mounting hole A on the Z-shaped single-tooth punching sheet is located at the radial 1/2 position of the stator yoke B and is in the circumferential length position of the radial outer edge of the stator yoke B, wherein the distance from the nearest gap A in the rotating direction of the rotor is 1/3-1/5.
Further, both the lamination A and the lamination B are provided with self-adhesive coatings.
Furthermore, the T-shaped single-tooth punching sheet and the Z-shaped single-tooth punching sheet are also provided with mounting holes B, and the mounting holes B are positioned at the middle parts of the stator teeth and are closer to the bottom of the stator slot.
Further, the size of the gap A and the gap B is 0.1-0.2 mm.
The utility model has the advantages that: the lamination A that T type single tooth punching formed and the lamination B that Z type single tooth punching formed fold in proper order and press, realize the interlocking between the two, promoted stator core's compactedness, guarantee the circularity of stator internal diameter more easily simultaneously.
Drawings
FIG. 1 is a schematic structural diagram of a ring stator in the prior art;
FIG. 2 is a schematic structural diagram of a segment in the background art;
FIG. 3 is a schematic structural view of the T-shaped single-tooth punching sheet of the present invention;
FIG. 4 is a schematic view of the connection structure of the T-shaped single-tooth punching sheet of the present invention;
FIG. 5 is a schematic structural view of the Z-shaped single-tooth punching sheet of the present invention;
FIG. 6 is a schematic view of the connection structure of the Z-shaped single-tooth punching sheet of the present invention;
fig. 7 is a schematic position diagram of the gap a of the present invention;
fig. 8 is a schematic diagram of the positions of the gap B and the gap C according to the present invention;
fig. 9 is a schematic position diagram of the gap a of the present invention;
fig. 10 is a schematic view of the position of the gap B of the present invention;
fig. 11 is a schematic view of the T-shaped single-tooth punching sheet stamping die of the present invention;
fig. 12 is a schematic view of the Z-shaped single-tooth punching sheet stamping die of the present invention;
fig. 13 is a schematic structural view of the tangential rotor of the present invention.
In the figure, 1, a stator yoke A, 2, a stator tooth A, 3, a stator yoke B, 4, a stator tooth B, 5, a gap A, 6, a gap B, 7, a gap C, 8, a welding groove, 9, a mounting hole A, 10, a mounting hole B, 11, a stator groove, 12, a stator groove bottom, 13, a shaft, 14, a rotor iron core, 15, an air groove A, 16, a permanent magnet and 17, an air groove B are arranged in sequence.
Detailed Description
The stator core of the embodiment comprises a plurality of layers of laminated sheets A and laminated sheets B which are sequentially laminated, wherein the uppermost layer is the laminated sheet A, the laminated sheet A is a circular structure formed by sequentially arranging a plurality of T-shaped single-tooth punching sheets, and the laminated sheet B is a circular structure formed by sequentially arranging a plurality of Z-shaped single-tooth punching sheets; as shown in fig. 3 and 4, the T-shaped single-tooth punching sheet includes a stator yoke a1 formed by extending the bottoms of a stator tooth a2 and a stator tooth a2 along the rotation direction of the rotor and the opposite direction of the rotor, respectively, and rectangular stator slots 11 are formed between adjacent T-shaped single-tooth punching sheets, as shown in fig. 5 and 6, the Z-shaped single-tooth punching sheet includes a stator yoke B3 formed by extending the bottoms of a stator tooth B4 and a stator tooth B4 along the rotation direction of the rotor, rectangular stator slots 11 are formed between adjacent Z-shaped single-tooth punching sheets, the stator yoke a1 and the stator yoke B3 are provided with communicating installation holes a9, the installation holes a9 are used for installing connecting bolts, the outer side surfaces of the T-shaped single-tooth punching sheet and the Z-shaped single-tooth punching sheet are provided with axially communicating welding slots 8 for welding, the welding slots 8 are located on the connection line of the installation holes a9 and the virtual circle center of the lamination, and one installation hole a9 and one welding slot 8 are used alternately when connecting two adjacent single-tooth, the other is connected by using the welding groove 8) or one mounting hole a9 and two welding grooves 8 are alternately used, so that the induced voltage generated at the bolt and the current generated by the end plate are reduced, and the efficiency is improved.
As shown in fig. 7-10, a gap a5 is provided between a stator yoke a1 of a first T-shaped single-tooth punching sheet and a stator yoke a1 of a second T-shaped single-tooth punching sheet in two adjacent T-shaped single-tooth punching sheets in a lamination sheet a, a gap B6 is provided between a stator yoke B3 of a first Z-shaped single-tooth punching sheet and a stator yoke B3 of a second Z-shaped single-tooth punching sheet in two adjacent Z-shaped single-tooth punching sheets in a lamination sheet B, and a gap C7 is provided between a stator yoke B3 of the first Z-shaped single-tooth punching sheet and a stator tooth B4 of the second Z-shaped single-tooth punching sheet in the lamination sheet B, and on a virtual projection plane, the gap a5 is equal to the two adjacent gaps B6 (L1-L2) so that the gap distribution is uniform to make the magnetic circuit symmetrical and reduce the axial current caused by the distribution of the gap; the gap A5 is positioned at one side of the virtual center line of the stator slot, and the gap B6 is positioned at one side of the virtual center line of the stator tooth at the same direction, preferably along the rotation direction of the rotor, and is used for preventing the lamination from being reversely punched when the lamination is installed to influence the lamination coefficient; the size of the gap A5, the gap B6 and the gap C7 is 0.1-0.2 mm.
The circle center of a mounting hole A9 on the Z-shaped single-tooth punching sheet is located at the radial 1/2 position of a stator yoke B3, the distance from a gap A5 closest to the rotor rotation direction is 1/3-1/5 of the circumferential length of the radial outer edge of a stator yoke B3, the mounting holes B10 on the Z-shaped single-tooth punching sheet and the T-shaped single-tooth punching sheet are located at the positions, close to the bottom 12 of the stator groove, of the middle portions of stator teeth of the Z-shaped single-tooth punching sheet and the T-shaped single-tooth punching sheet, the magnetic saturation degree of the tooth portions corresponding to the positions of notches near the tooth tops.
Further, in order to ensure that the lamination A and the lamination B are stably connected, the lamination A and the lamination B are both provided with self-adhesive coatings, so that the interlocking effect between different laminations is further realized.
As shown in fig. 4 and 6, the stator teeth a2 and B4 are provided with mounting holes B10 in communication, the mounting holes B10 are used for mounting bolts during mounting, and the number of the mounting holes B10 depends on the lamination coefficient of the stator core to ensure a reasonable lamination.
Further, T type monodentate towards piece and Z type monodentate towards piece still have when producing the effect that reduces the waste material and produce, promote the utilization ratio for prior art, and its stamping die is shown in fig. 11 and fig. 12.
When the stator is used, a tangential rotor with the rotating speed of 50-200 rpm is installed in the stator iron core, a formed winding is embedded in the stator slot 11, a water jacket for cooling is arranged on the outer side of the stator iron core, and a shell is arranged outside the water jacket, so that a stator is formed; temperature measuring elements are arranged in the mounting holes A9 and the mounting holes B10 without mounting bolts, the number of the temperature measuring elements is at least 6, fins are arranged at the end part of the rotor, located on one side of the driving shaft, in the two axial ends of the rotor, and the fins are used for stirring gas or liquid in the motor to play a role in auxiliary cooling.
As shown in fig. 13, permanent magnets 16 are embedded in a rotor core 14 of the tangential rotor, the permanent magnets 16 are uniformly distributed at 90-degree intervals, air slots B17 are provided between the permanent magnets 16 and the shaft 13, and air slots a15 are provided between the rotor core 14 and the shaft 13.
The embodiment also provides a production method of the stator of the high-power low-speed permanent magnet motor with the stator core, which comprises the following steps:
s1, placing corresponding bolts on the vertical operating platform in advance according to the quantity and the positions of the mounting holes A9 and the mounting holes B10, wherein the bolts play a positioning role;
s2, placing the end plate A on the vertical operating platform through a bolt to be used as the bottommost layer, wherein the width of the end plate A is the same as that of the stator yoke;
s3, placing a T-shaped single-tooth punching sheet on the end plate A to form a lamination A, and then placing a Z-shaped single-tooth punching sheet on the lamination A to form a lamination B; at the moment, the bolt plays a role in positioning;
s4: repeating the step S3 to enable the lamination A and the lamination B to reach the designated number of layers, and enabling the uppermost lamination to be the lamination A;
s5, placing the end plate B on the lamination A at the top layer through a bolt, and fastening one end of the bolt through a nut to ensure the reasonable lamination coefficient of the stator core; at the moment, the bolt plays a role in fixing and fastening, and the end plate B and the stator yoke have the same width;
s6, putting the whole body obtained in the step S5 into a high-temperature furnace, heating according to preset temperature and time, cooling and taking out; and removing local stress generated by the edges of the Z-shaped single-tooth punching sheet and the T-shaped single-tooth punching sheet due to punching, and heating and fixing the lamination A with the self-adhesive coating and the lamination B.
S7, welding the welding grooves 8 at the designated positions to connect the lamination A and the lamination B, and then removing all the bolts in the mounting hole B10 and part of the bolts in the mounting hole A9 to ensure that the mounting hole A9 and the welding grooves 8 are alternately used in proportion, thereby connecting and fixing the lamination A and the lamination B;
s8, sleeving a water jacket and a machine shell, laying insulating materials in the stator slot 11, then placing a formed winding and arranging a slot wedge, and installing temperature measuring elements in the installation holes A9 and B10 without bolts and connecting wires;
and S9, putting the whole body obtained in the step S8 into a paint dipping furnace, and performing vacuum encapsulation by using epoxy resin, wherein the epoxy resin is dipped into the gap A5, the gap B6 and the gap C7 to play a certain fixing role.
The above description is only the specific implementation manner of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution of the present invention and the design of the present invention within the technical scope of the present invention.
Claims (10)
1. A stator core of a motor is characterized by comprising a plurality of layers of laminated sheets A and B which are laminated in sequence; the lamination A is a circular structure formed by sequentially arranging a plurality of T-shaped single-tooth punching sheets, and the lamination B is a circular structure formed by sequentially arranging a plurality of Z-shaped single-tooth punching sheets.
2. The stator core of the motor according to claim 1, wherein the T-shaped single-tooth punching sheet comprises a stator tooth A (2) and a stator yoke A (1) formed by extending the bottom of the stator tooth A (2) along the rotor rotation direction and the opposite direction of the rotor rotation respectively; the Z-shaped single-tooth punching sheet comprises stator teeth B (4) and a stator yoke B (3) formed by extending the bottoms of the stator teeth B (4) along the rotation direction of the rotor.
3. The stator core of the motor as claimed in claim 1, wherein the T-shaped single-tooth punching sheet and the Z-shaped single-tooth punching sheet are provided with welding grooves (8) which are communicated with each other for welding, and the T-shaped single-tooth punching sheet and the Z-shaped single-tooth punching sheet are also provided with mounting holes a (9) which are communicated with each other for inserting a connecting piece.
4. Stator core of an electrical machine according to claim 3, characterised in that the mounting holes A (9) and the welding slots (8) are connected in a proportional alternating manner.
5. The stator core of the motor according to claim 2, wherein a gap a (5) is formed between a stator yoke a (1) of a first T-type single-tooth punching sheet and a stator yoke a (1) of a second T-type single-tooth punching sheet of two adjacent T-type single-tooth punching sheets in the lamination sheet a, a gap B (6) is formed between a stator yoke B (3) of a first Z-type single-tooth punching sheet and a stator yoke B (3) of a second Z-type single-tooth punching sheet of two adjacent Z-type single-tooth punching sheets in the lamination sheet B, the gap a (5) is located on one side of the virtual center line of the stator slot, and the gap B (6) is located on one side of the same direction of the virtual center line of the stator tooth.
6. Stator core of an electrical machine according to claim 5, characterized in that the slots A (5) are equidistant from two adjacent slots B (6) on a virtual projection plane.
7. The stator core of the motor as claimed in claim 3, wherein the circle center of the mounting hole A (9) on the Z-shaped single-tooth punching sheet is located at radial 1/2 of the stator yoke B (3) and is located at the circumferential length of the radial outer edge of the stator yoke B (3) which is 1/3-1/5 away from the gap A (5) which is the nearest in the rotor rotation direction.
8. Stator core of an electrical machine according to claim 1, characterized in that both lamination a and lamination B are provided with a self-adhesive coating.
9. The stator core of the motor according to claim 1, wherein the T-shaped single-tooth punching sheet and the Z-shaped single-tooth punching sheet are further provided with mounting holes B (10), and the mounting holes B (10) are located at positions where the middle parts of the stator teeth are closer to the bottom (12) of the stator slot.
10. The stator core of the motor according to claim 5, wherein the size of the gap A (5) and the gap B (6) is 0.1-0.2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020542062.6U CN211429017U (en) | 2020-04-14 | 2020-04-14 | Stator core of motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020542062.6U CN211429017U (en) | 2020-04-14 | 2020-04-14 | Stator core of motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211429017U true CN211429017U (en) | 2020-09-04 |
Family
ID=72286304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020542062.6U Active CN211429017U (en) | 2020-04-14 | 2020-04-14 | Stator core of motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211429017U (en) |
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2020
- 2020-04-14 CN CN202020542062.6U patent/CN211429017U/en active Active
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