CN210074909U - Rotor shaft system and motor - Google Patents
Rotor shaft system and motor Download PDFInfo
- Publication number
- CN210074909U CN210074909U CN201921299564.4U CN201921299564U CN210074909U CN 210074909 U CN210074909 U CN 210074909U CN 201921299564 U CN201921299564 U CN 201921299564U CN 210074909 U CN210074909 U CN 210074909U
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- shaft
- shaft section
- rotor
- section
- magnetic steel
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Abstract
The utility model provides a rotor shaft system and a motor, wherein the rotor shaft system comprises a main shaft and magnetic steel, the main shaft comprises a first shaft section and a second shaft section, and the first shaft section and the second shaft section are respectively arranged at two ends of the magnetic steel; the rotor shaft system further comprises a shaft sleeve, the shaft sleeve is sleeved on the magnetic steel, and two ends of the shaft sleeve are respectively abutted to the first shaft section and the second shaft section. The utility model provides a rotor shaft system designs into first shaft section and second shaft section with the main shaft, and first shaft section and second shaft section cavity have alleviateed rotor shaft system's weight, have improved high-speed pivoted stability, have avoided the problem of the unbalanced external force unstability of high-speed operation. It is helpful to reduce energy consumption during high-speed operation.
Description
Technical Field
The utility model belongs to the technical field of permanent-magnet machine, more specifically say, relate to a rotor shafting and motor.
Background
When the permanent magnet motor rotor runs at a high speed, the permanent magnet is difficult to bear huge tensile stress caused by centrifugal force, and the rotor is easy to generate larger vibration and even bending deformation due to resonance, so the strength and the critical rotating speed of the rotor must be analyzed.
When the permanent magnet motor operates under rated working conditions, the rotating speed of a rotor is up to tens of thousands of revolutions to hundreds of thousands of revolutions. The permanent magnet motor is easy to lose stability and rub under high rotating speed, and the safe operation of the equipment is affected. Because the unbalanced magnetic pull force that machining precision, installation error and variable operating mode operation etc. produced can produce certain influence to motor shafting steady operation.
The existing permanent magnet motor is easy to be unstable due to unbalanced external force when rotating at high speed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a rotor shafting to the easy problem that takes place the unstability when the high-speed rotation that exists among the solution prior art.
In order to achieve the above object, the utility model adopts the following technical scheme: the rotor shaft system comprises a main shaft and magnetic steel, wherein the main shaft comprises a first shaft section and a second shaft section, and the first shaft section and the second shaft section are respectively arranged at two ends of the magnetic steel; the rotor shaft system further comprises a shaft sleeve, the shaft sleeve is sleeved on the magnetic steel, and two ends of the magnetic steel are respectively abutted to the first shaft section and the second shaft section.
Further, the first shaft section and/or the second shaft section are hollow.
Furthermore, the magnetic steel is integrated and cylindrical.
Further, one end of the first shaft section and/or the second shaft section facing the shaft sleeve is provided with a shaft shoulder abutting against the shaft sleeve.
Further, the shaft sleeve and the magnetic steel are subjected to interference pre-tightening.
Another object of the present invention is to provide a motor, including the above rotor shaft system.
The utility model provides a rotor shafting's beneficial effect lies in: compared with the prior art, the utility model discloses design into first shaft section and second shaft section with the main shaft, first shaft section and second shaft section cavity have alleviateed rotor shafting's weight, have improved high-speed pivoted stability, have avoided the problem of the unbalanced external force unstability of high-speed operation. It is helpful to reduce energy consumption during high-speed operation.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a schematic cross-sectional structural diagram of a rotor shaft system provided in an embodiment of the present invention;
wherein, in the drawings, the reference numerals are mainly as follows:
1. a main shaft; 11. a first shaft section; 12. a second shaft section;
2. magnetic steel; 3. a shaft sleeve; 4. and a shaft shoulder.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a rotor shaft system according to an embodiment of the present invention will now be described. The rotor shafting comprises a main shaft 1 and magnetic steel 2. The main shaft 1 comprises a first shaft section 11 and a second shaft section 12, and the magnetic steel 2 is located between the first shaft section 11 and the second shaft section 12. The rotor shaft system further comprises a shaft sleeve 3, the shaft sleeve 3 is sleeved on the magnetic steel 2, and two ends of the shaft sleeve 3 are respectively abutted to the first shaft section 11 and the second shaft section 12. Because the rotor must check a series of critical rotating speeds in the process of high-speed rotation, the first shaft section 11 and/or the second shaft section 12 are designed to be hollow, the weight of a rotor shaft system is reduced, the stability of high-speed rotation is improved, and the problem of unbalanced external force instability in high-speed operation is avoided. It is helpful to reduce energy consumption during high-speed operation.
The utility model provides a rotor shafting compares with prior art, designs into primary shaft section 11 and secondary shaft section 12 with main shaft 1, and primary shaft section 11 and secondary shaft section 12 cavity have alleviateed rotor shafting's weight, have improved high-speed pivoted stability, have avoided the problem of the unbalanced external force unstability of high-speed operation. It is helpful to reduce energy consumption during high-speed operation.
Further, please refer to fig. 1, as a specific embodiment of the present invention, the magnetic steel 2 is an integral structure and is cylindrical. The existing magnetic steel 2 is mostly formed by laminating silicon-free steel sheets, and has the defects of large centrifugal force, easy cracking or needing of slotting and overlarge torque during high-speed operation. In addition, the magnetic steel 2 formed by laminating silicon-free steel sheets is easy to generate eddy current loss, so that the magnetic steel 2 is designed into an integral structure and is cylindrical, and the problem is avoided. In addition, in order to avoid magnetic leakage and reduce the influence of a magnetic field on the rotor shaft system, 2 materials of high-resistance magnetic steel are adopted, so that the problem that the rotor shaft system material is seriously heated under high-speed rotation is avoided, the magnetization of the rotor shaft system is reduced, and the magnetic leakage is reduced.
Further, referring to fig. 1, as a specific embodiment of the rotor shaft system provided by the present invention, a shaft shoulder 4 abutting against the shaft sleeve 3 is disposed at one end of the first shaft section 11 and/or the second shaft section 12 facing the shaft sleeve 3. The installation and positioning of the first rotating shaft or the second rotating shaft, the shaft sleeve 3 and the magnetic steel 2 are facilitated.
Further, please refer to fig. 1, which is a specific embodiment of the rotor shaft system provided by the present invention, the shaft sleeve 3 and the magnetic steel 2 are pre-tightened in an interference manner.
The utility model also provides a motor, the motor includes above-mentioned rotor shafting.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. Rotor shafting, including main shaft, magnet steel, its characterized in that: the main shaft comprises a first shaft section and a second shaft section, and the first shaft section and the second shaft section are respectively arranged at two ends of the magnetic steel; the rotor shaft system further comprises a shaft sleeve, the shaft sleeve is sleeved on the magnetic steel, and two ends of the shaft sleeve are respectively abutted against the first shaft section and the second shaft section; the first shaft section and/or the second shaft section are hollow.
2. The rotor shaft system of claim 1, wherein: the magnetic steel is integrated and cylindrical.
3. The rotor shaft system of claim 1, wherein: and a shaft shoulder which is abutted against the shaft sleeve is arranged at one end, facing the shaft sleeve, of the first shaft section and/or the second shaft section.
4. The rotor shaft system of claim 1, wherein: the shaft sleeve and the magnetic steel are pre-tightened in an interference manner.
5. An electric machine characterized by: comprising a rotor shaft system according to any of claims 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921299564.4U CN210074909U (en) | 2019-08-12 | 2019-08-12 | Rotor shaft system and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921299564.4U CN210074909U (en) | 2019-08-12 | 2019-08-12 | Rotor shaft system and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210074909U true CN210074909U (en) | 2020-02-14 |
Family
ID=69430977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921299564.4U Active CN210074909U (en) | 2019-08-12 | 2019-08-12 | Rotor shaft system and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210074909U (en) |
-
2019
- 2019-08-12 CN CN201921299564.4U patent/CN210074909U/en active Active
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