Explosion-proof permanent magnet integrated machine stator core mechanism
Patent Information
- Application Number
- CN202522451325.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-19
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-11-19
AI Technical Summary
[0002]防爆永磁一体机在运行过程中容易产生齿谐波转矩，影响启动性能，电磁振动和噪音，谐波附加损耗，电机运行不稳定等问题，在小型永磁电机中，转子铁芯斜槽可以做成分段式斜槽，永磁体体积较小，方便在转子铁芯分段式压装过程中安装；但是，大型防爆永磁一体机转子安装的永磁体体积较大，分段式安装比较困难，不能在转子铁芯实现斜槽；在防爆永磁一体机设计时需要解决启动性能、谐波转矩、启动卡滞、降低电磁噪声、运行更平稳等问题
[0008]本实用新型配装在防爆永磁一体机，本实用新型的定子前齿压板和定子后齿压板固定斜槽筋，将定子冲片斜筋槽与斜槽筋定位叠装，最后定子铁芯叠装高度符合设计要求，将定子铁芯两侧定子前齿压板和定子后齿压板压紧固定形成定子铁芯。大型防爆永磁一体机转子安装的永磁体体积较大，转子分段式安装比较困难，不能在转子铁芯实现斜槽；在防爆永磁一体机设计时，需要解决启动性能、谐波转矩、启动卡滞、降低电磁噪声、运行更平稳、抑制了引起转矩脉动的谐波分量等问题，采用本实用新型在定子铁芯利用斜槽筋将定子铁芯叠压为斜槽解决以上问题。
Smart Images
Figure CN224909177U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of explosion-proof permanent magnet integrated machine production technology, and in particular to a stator core mechanism for an explosion-proof permanent magnet integrated machine. Background Technology
[0002] Explosion-proof permanent magnet integrated motors are prone to generating tooth harmonic torque during operation, which affects starting performance, electromagnetic vibration and noise, harmonic additional losses, and motor instability. In small permanent magnet motors, the rotor core skew slots can be made into segmented skew slots, and the permanent magnets are small in size, making it convenient to install them during the segmented pressing process of the rotor core. However, the permanent magnets installed on the rotor of large explosion-proof permanent magnet integrated motors are larger in size, making segmented installation more difficult and preventing the implementation of skew slots in the rotor core. Therefore, the design of explosion-proof permanent magnet integrated motors needs to address issues such as starting performance, harmonic torque, starting jamming, reducing electromagnetic noise, and achieving smoother operation. Utility Model Content
[0003] The purpose of this invention is to provide an explosion-proof permanent magnet integrated machine stator core mechanism.
[0004] An explosion-proof permanent magnet integrated machine stator core mechanism includes a stator front tooth pressure plate, a rib groove, a stator lamination, and a stator rear tooth pressure plate. The stator lamination has a rib groove on its edge. The stator front tooth pressure plate and the stator rear tooth pressure plate fix the rib groove. The stator lamination rib groove and the rib groove are positioned and stacked. After the stator lamination rib groove and the rib groove are positioned and stacked, a stator core rib groove is formed. The stator core rib groove is one stator tooth pitch. The stator front tooth pressure plate and the stator rear tooth pressure plate on both sides of the stator core are pressed and fixed to form the stator core.
[0005] Preferably, welds are provided on the inclined slots of the stator core.
[0006] Preferably, the stator front tooth pressure plate and the stator rear tooth pressure plate are provided with tooth pressure plate inclined rib grooves, and the two ends of the inclined ribs are respectively fitted into the tooth pressure plate inclined rib grooves of the stator front tooth pressure plate and the stator rear tooth pressure plate.
[0007] Preferably, the thickness of the stator front tooth pressure plate and the stator rear tooth pressure plate is 10mm, and the thickness of the stator lamination is 0.5mm.
[0008] This utility model is used in an explosion-proof permanent magnet integrated machine. The stator front tooth pressure plate and stator rear tooth pressure plate fix the inclined slot ribs, positioning and stacking the stator lamination inclined slots with the inclined slot ribs. Finally, the stator core stacking height meets the design requirements. The stator front tooth pressure plates and stator rear tooth pressure plates on both sides of the stator core are pressed and fixed to form the stator core. The permanent magnets installed on the rotor of a large explosion-proof permanent magnet integrated machine are large in volume, making segmented rotor installation difficult and preventing the creation of inclined slots in the rotor core. In the design of explosion-proof permanent magnet integrated machines, it is necessary to solve problems such as starting performance, harmonic torque, starting jamming, reducing electromagnetic noise, smoother operation, and suppressing harmonic components that cause torque pulsation. This utility model solves these problems by using inclined slot ribs to stack the stator core into inclined slots.
[0009] When this utility model is installed on an explosion-proof permanent magnet integrated machine, the stator lamination inclined rib slots and inclined slot ribs are positioned and stacked to form stator core inclined slots during operation, which has the following advantages: suppressing tooth harmonic torque and improving starting performance; reducing electromagnetic vibration and noise; weakening harmonic additional losses and improving efficiency; and improving the smoothness of motor operation. Attached Figure Description
[0010] Figure 1 This is a partial structural diagram of the stator core mechanism of an explosion-proof permanent magnet integrated machine; Figure 2 for Figure 1 Schematic diagram of the Q-axis structure; Figure 3 This is a schematic diagram of the stator lamination structure; Figure 4 This is a schematic diagram of the stator front gear pressure plate from a side view. In the diagram: 1. Stator front tooth pressure plate, 2. Inclined groove rib, 3. Stator lamination, 4. Stator rear tooth pressure plate, 5. Inclined rib groove, 6. Stator core inclined groove, 7. Tooth pressure plate inclined rib groove, 8. Stator tooth pitch, 9. Weld, 10. Detailed Implementation
[0011] To make the technical solution of this utility model easier to understand, the technical solution of this utility model will now be clearly and completely described in conjunction with the accompanying drawings and specific embodiments.
[0012] Please also refer to Figure 1 , Figure 2 , Figure 3 and Figure 4The stator core mechanism of the explosion-proof permanent magnet integrated machine includes a stator front tooth pressure plate 1, a diagonal groove rib 2, a stator lamination 3, and a stator rear tooth pressure plate 4. Diagonal grooves 5 are formed on the edges of the stator lamination 3. The diagonal groove rib 2 is fixed by the stator front tooth pressure plate 1 and the stator rear tooth pressure plate 4. The diagonal grooves 5 and 2 of the stator lamination 3 are positioned and stacked together, forming a stator core diagonal groove 6. The stator core diagonal groove 6 is one stator tooth pitch a. The stator front tooth pressure plate 1 and the stator rear tooth pressure plate 4 on both sides of the stator core are pressed and fixed to form the stator core. A weld b is provided on the stator core diagonal groove 6. Figure 2 Weld b in the middle is used to effectively fix the inclined groove rib 2 to the stator lamination 3, and to prevent the intermediate stator lamination 3 from becoming loose, which would cause vibration and noise during motor operation.
[0013] The stator front tooth pressure plate 1 and the stator rear tooth pressure plate 4 are provided with tooth pressure plate inclined rib grooves 7. The two ends of the inclined ribs 2 are respectively fitted into the tooth pressure plate inclined rib grooves 7 of the stator front tooth pressure plate 1 and the stator rear tooth pressure plate 4. The stator front tooth pressure plate 1 and the stator rear tooth pressure plate 4 are 10mm thick and are responsible for pressing down the 0.5mm stator laminations, so that the teeth spring back slightly.
[0014] This utility model is used in an explosion-proof permanent magnet integrated machine. The stator front tooth pressure plate and stator rear tooth pressure plate fix the inclined slot ribs, positioning and stacking the stator lamination inclined slots with the inclined slot ribs. Finally, the stator core stacking height meets the design requirements. The stator front tooth pressure plates and stator rear tooth pressure plates on both sides of the stator core are pressed and fixed to form the stator core. The permanent magnets installed on the rotor of a large explosion-proof permanent magnet integrated machine are large in volume, making segmented rotor installation difficult and preventing the creation of inclined slots in the rotor core. In the design of explosion-proof permanent magnet integrated machines, it is necessary to solve problems such as starting performance, harmonic torque, starting jamming, reducing electromagnetic noise, smoother operation, and suppressing harmonic components that cause torque pulsation. This utility model solves these problems by using inclined slot ribs to stack the stator core into inclined slots.
[0015] When this utility model is installed on an explosion-proof permanent magnet integrated machine, the stator lamination inclined rib slots and inclined slot ribs are positioned and stacked to form stator core inclined slots during operation, which has the following advantages: suppressing tooth harmonic torque and improving starting performance; reducing electromagnetic vibration and noise; weakening harmonic additional losses and improving efficiency; and improving the smoothness of motor operation.
[0016] It should be noted that the embodiments described herein are only some embodiments of this utility model, and not all implementations of this utility model. These embodiments are merely illustrative and are intended only to provide a more intuitive and clear way of understanding the content of this utility model, not to limit the technical solutions described herein. All other implementation methods that can be conceived by those skilled in the art without creative effort, as well as other simple substitutions and variations of the technical solutions of this utility model, without departing from the concept of this utility model, are within the protection scope of this utility model.
Claims
1. A stator core mechanism for an explosion-proof permanent magnet integrated machine, characterized in that: The stator core mechanism of the explosion-proof permanent magnet integrated machine includes a stator front tooth pressure plate, a rib groove, a stator lamination, and a stator rear tooth pressure plate. The stator lamination has a rib groove on its edge. The stator front tooth pressure plate and the stator rear tooth pressure plate fix the rib groove. The stator lamination rib groove and the rib groove are positioned and stacked. After the stator lamination rib groove and the rib groove are positioned and stacked, the stator core rib groove is formed. The stator core rib groove is one stator tooth pitch. The stator front tooth pressure plate and the stator rear tooth pressure plate on both sides of the stator core are pressed and fixed to form the stator core.
2. The explosion-proof permanent magnet integrated machine stator core mechanism as described in claim 1, characterized in that: Welds are installed on the inclined slots of the stator core.
3. The explosion-proof permanent magnet integrated machine stator core mechanism as described in claim 2, characterized in that: The stator front tooth pressure plate and the stator rear tooth pressure plate are provided with tooth pressure plate inclined rib grooves, and the two ends of the inclined ribs are respectively fitted into the tooth pressure plate inclined rib grooves of the stator front tooth pressure plate and the stator rear tooth pressure plate.
4. The explosion-proof permanent magnet integrated machine stator core mechanism as described in claim 2, characterized in that: The stator front tooth pressure plate and stator rear tooth pressure plate are 10mm thick, and the stator laminations are 0.5mm thick.