CN211830456U - Permanent magnet motor rotor - Google Patents
Permanent magnet motor rotor Download PDFInfo
- Publication number
- CN211830456U CN211830456U CN202020673392.9U CN202020673392U CN211830456U CN 211830456 U CN211830456 U CN 211830456U CN 202020673392 U CN202020673392 U CN 202020673392U CN 211830456 U CN211830456 U CN 211830456U
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- Prior art keywords
- dynamic balance
- balance board
- permanent magnet
- ventilation holes
- pivot
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- 238000009423 ventilation Methods 0.000 claims abstract description 35
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 6
- 239000010959 steel Substances 0.000 claims abstract description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model belongs to the technical field of the motor technology and specifically relates to indicate a permanent-magnet machine rotor, locate the outer first dynamic balance board of pivot including pivot and cover in proper order, rotor core, the second dynamic balance board, lock washer and retaining ring, the embedded a plurality of magnet steel that is equipped with of rotor core, the pivot is provided with spacing step and catch basin, the first dynamic balance board of spacing step conflict, the inner ring appearance of retaining ring is located and is kept off the inslot, the protruding a plurality of fan blades that are equipped with in one side that rotor core was kept away from to the second dynamic balance board, a plurality of fan blades are the annular array and distribute around the central axis of pivot, first dynamic balance board is provided with a plurality of first ventilation holes, the second dynamic balance board is provided with a plurality of second ventilation holes, rotor core is provided with a plurality of third ventilation holes, a plurality of first ventilation holes, a plurality of second ventilation holes. The utility model has the advantages of simple structure, the dismouting is convenient with the maintenance, and the radiating effect is good, has solved the easy not hard up problem of dynamic balance board effectively, and structural stability is good.
Description
Technical Field
The utility model belongs to the technical field of the motor technique and specifically relates to indicate a permanent-magnet machine rotor.
Background
With the development of rare earth permanent magnet materials, microelectronic technology, power electronic technology, modern control theory, the maturity of permanent magnet motor technology and the popularization and application of industrial design software, the permanent magnet motor becomes a new direction of alternating current motor control technology and energy-saving and environment-friendly development due to superior performances of wider high efficiency and high power factor range, small motor size, large torque, good control effect and the like, so that the permanent magnet motor is widely researched and applied. The heat dissipation capability of the motor determines the performance and the cost of the motor, and the air cooling motor can improve the heat dissipation effect of the motor by improving the internal and external convection heat exchange coefficients of the motor.
Ideally, the rotor of a rotating permanent magnet machine is a balanced body of revolution, i.e. the rotor rotates as well as the pressure on the bearings of the machine when not rotating. However, because of the blank defects, uneven material quality and processing and assembling errors of each part on the rotor, even multiple factors such as asymmetric geometric shapes of the rotor in the circumferential direction are needed during design, the rotor of the permanent magnet motor in practical engineering is not a balanced revolving body, so that the centrifugal force generated by each tiny mass point in the circumferential direction can not be completely offset when the rotor rotates, and the centrifugal force and the couple of force which change periodically are transmitted to the motor through a motor bearing, thereby not only causing the vibration and the noise of the motor, but also intensifying the bearing abrasion and shortening the service life of the motor. The permanent magnet motor is usually provided with rotor dynamic balance plates arranged on two sides of a motor core, and plays a role in compressing a rotor core lamination and reducing the unbalance amount of the motor rotor by a weighting or weighting reduction method.
In addition, a strong-magnetism magnet (magnetic steel) is embedded in a rotor core of the permanent magnet motor, due to the magnetization effect of the magnet, each lamination of the rotor core is magnetic, repulsive force can be generated among the laminations, if the method of tightly pressing the rotor core only by the interference fit of a dynamic balance plate and a shaft is not reliable, particularly, the dynamic balance plate is easy to loosen when the motor is loaded, and the winding is rubbed to cause short circuit and burnout of the winding. Therefore, how to improve the convection heat transfer coefficient inside the motor and firmly install the dynamic balance plate of the permanent magnet motor rotor is a technical problem that needs to be solved by the technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, an object of the utility model is to provide a permanent magnet motor rotor, its radiating effect is good, has solved the easy not hard up problem of dynamic balance board, and installation and easy maintenance.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a permanent magnet motor rotor, its includes the pivot and overlaps in proper order and locate first dynamic balance board, rotor core, second dynamic balance board, lock washer and retaining ring outside the pivot, the embedded a plurality of magnet steel that are equipped with of rotor core, the pivot is provided with spacing step and catch basin, spacing step contradicts first dynamic balance board, the catch basin is located to the inner ring appearance of retaining ring, rotor core is kept away from to second dynamic balance board one side protruding be equipped with a plurality of fan blades, and a plurality of fan blades are the annular array around the central axis of pivot and distribute, first dynamic balance board is provided with a plurality of first ventilation holes, second dynamic balance board is provided with a plurality of second ventilation holes, rotor core is provided with a plurality of third ventilation holes, a plurality of first ventilation holes, a plurality of second ventilation holes and a plurality of third ventilation hole one-to-ones intercommunication.
Furthermore, a plurality of second ventholes are distributed around the central axis of the rotating shaft in an annular array, and the second ventholes and the fan blades are arranged at intervals.
Further, first dynamic balance board and second dynamic balance board all are provided with a plurality of balanced holes, and a plurality of balanced holes are the annular array setting around the central axis of pivot.
Further, the balance hole is filled with balance daub.
Further, the balance hole is an inverted cone hole.
Further, all of the second vent holes are located inside the plurality of balance holes.
Furthermore, the fan blades are flat or arc-shaped.
Furthermore, a reinforcing rib is arranged on one side, away from the rotor core, of the first dynamic balance plate.
Furthermore, key grooves are formed in the two ends of the rotating shaft in a concave mode.
Further, the number of the stop washers is one or more.
The utility model has the advantages that: the utility model discloses assemble into permanent-magnet machine with stator and shell, ventilation hole through this rotor, clearance between stator and this rotor, the ventilation groove of stator and shell forms the circulation wind path, the rotor is when rotating, the fan blade of second dynamic balance board rotates and produces the air current, the air current circulates in the circulation wind path, reach the inside convection heat transfer coefficient's of increase permanent-magnet machine purpose, the radiating effect is good, permanent-magnet machine's life has been prolonged effectively, and through spacing step, lock washer and retaining ring cooperation are so that first dynamic balance board and second dynamic balance board press from both sides tight rotor core, make first dynamic balance board and second dynamic balance board can firmly install in the pivot. The inner ring appearance of retaining ring is located and is kept off the inslot, and the inner wall in fender groove is contradicted the inner ring of retaining ring to carry on spacingly to the retaining ring, guaranteed retaining ring in the epaxial position accuracy of commentaries on classics and stability, further improved first dynamic balance board, rotor core and second dynamic balance board and installed in the epaxial stability of changeing.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic perspective view of another perspective of the present invention.
Fig. 3 is a schematic view of the exploded structure of the present invention.
Description of reference numerals:
1. a rotating shaft; 2. a first dynamic balance plate; 3. a rotor core; 4. a second dynamic balance plate; 5. a stop washer; 6. a retainer ring; 7. magnetic steel; 8. a limiting step; 9. a baffle groove; 10. a fan blade; 11. a first vent hole; 12. a second vent hole; 13. a third vent hole; 14. a balance hole; 15. reinforcing ribs; 16. a keyway.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.
As shown in fig. 1 to 3, the present invention provides a permanent magnet motor rotor, which comprises a rotating shaft 1, and a first dynamic balance plate 2, a rotor core 3, a second dynamic balance plate 4, a stop washer 5 and a retainer ring 6 sequentially sleeved outside the rotating shaft 1, wherein a plurality of magnetic steels 7 are embedded in the rotor core 3, the rotating shaft 1 is provided with a limit step 8 and a stop groove 9, the limit step 8 abuts against the first dynamic balance plate 2, an inner ring of the retainer ring 6 is accommodated in the stop groove 9, an inner wall of the stop groove 9 abuts against an inner ring of the retainer ring 6 to limit the retainer ring 6, one side of the second dynamic balance plate 4 away from the rotor core 3 is convexly provided with a plurality of fan blades 10, the plurality of fan blades 10 are distributed in an annular array around a central axis of the rotating shaft 1, the first dynamic balance plate 2 is provided with a plurality of first ventilation holes 11, the second dynamic balance plate 4 is provided with a plurality of second ventilation holes 12, rotor core 3 is provided with a plurality of third ventilation holes 13, a plurality of first ventilation holes 11, a plurality of second ventilation holes 12 and a plurality of third ventilation holes 13 one-to-one intercommunication.
The utility model discloses assemble into permanent-magnet machine with stator and shell, ventilation hole through this rotor, clearance between stator and this rotor, the ventilation groove of stator and shell forms the circulation wind path, the rotor is when rotating, fan blade 10 of second dynamic balance board 4 rotates and produces the air current, the air current circulates in the circulation wind path, reach the inside convection heat transfer coefficient's of increase permanent-magnet machine purpose, the radiating effect is good, permanent-magnet machine's life has been prolonged effectively, and through spacing step 8, the cooperation of lock washer 5 and retaining ring 6 is so that first dynamic balance board 2 and second dynamic balance board 4 press from both sides tight rotor core 3, make first dynamic balance board 2 and second dynamic balance board 4 can firmly install in pivot 1. In retaining groove 9 was located to the inner ring appearance of retaining ring 6, the inner wall of retaining groove 9 contradicted the inner ring of retaining ring 6 to spacing retaining ring 6, guaranteed retaining ring 6 position accuracy and stability in pivot 1, further improved first dynamic balance board 2, rotor core 3 and the stability of second dynamic balance board 4 installation in pivot 1.
The utility model has the advantages of simple structure, the dismouting is convenient with the maintenance, and the radiating effect is good, has solved the easy not hard up problem of dynamic balance board effectively, and structural stability is good.
In particular, the baffle groove 9 is an annular groove.
In this embodiment, the plurality of second ventilation holes 12 are distributed in an annular array around the central axis of the rotating shaft 1, and the plurality of second ventilation holes 12 and the plurality of fan blades 10 are arranged at intervals; this structural design is favorable to the air current that fan blade 10 produced to get into second ventilation hole 12, third ventilation hole 13 and first ventilation hole 11, and then improves radiating effect.
In this embodiment, the first dynamic balance plate 2 and the second dynamic balance plate 4 are both provided with a plurality of balance holes 14, and the plurality of balance holes 14 are arranged in an annular array around the central axis of the rotating shaft 1; the balance holes 14 are filled with balance daub. The rotor is ensured to be a balanced revolving body by increasing and decreasing balance daub in the balance holes 14.
In this embodiment, balance hole 14 is the back taper hole, and the biggest aperture in back taper hole is close to rotor core 3, will balance the daub chucking through the back taper hole for balanced daub can firmly be installed on first dynamic balance board 2 or second dynamic balance board 4, and balanced daub is difficult to drop.
Specifically, the distance between the retaining groove 9 and the limiting step 8 is equal to the sum of the thickness of the first dynamic balance plate 2, the thickness of the rotor core 3, the thickness of the second dynamic balance plate 4 and the thickness of the plurality of stop washers 5.
In the present embodiment, all the second ventilation holes 12 are located inside the plurality of balance holes 14.
In this embodiment, the fan blade 10 is in a flat plate shape or an arc shape; when the fan blade 10 is flat, the production and the manufacture are convenient, and the production and the manufacture cost are reduced; when the fan blades 10 are arc-shaped, the airflow generated by the rotation of the fan blades 10 can be improved.
Specifically, the fan blade 10 and the second dynamic balance plate 4 are of an integrated structure, so that the production and the manufacturing are convenient, the strength and the hardness are high, and the structural stability is good.
In this embodiment, the reinforcing rib 15 is arranged on the side of the first dynamic balance plate 2 away from the rotor core 3, so that the strength and hardness of the first dynamic balance plate 2 are improved, and the service life of the first dynamic balance plate 2 is prolonged.
In this embodiment, the two ends of the rotating shaft 1 are both provided with key slots 16 in a concave manner, so that the rotating shaft 1 can be conveniently connected with an external structure.
In this embodiment, the number of the stop washers 5 is one or more; according to the utility model discloses elasticity degree when the assembly can adopt several lock washer 5, guarantees that first dynamic balance board 2, rotor core 3 and second dynamic balance board 4 can firmly be installed in pivot 1.
All the technical features in the embodiment can be freely combined according to actual needs.
The above-mentioned embodiment does the utility model discloses the implementation scheme of preferred, in addition, the utility model discloses can also realize by other modes, any obvious replacement is all within the protection scope of the utility model under the first condition that does not deviate from this technical scheme design.
Claims (10)
1. A permanent magnet motor rotor characterized in that: including the pivot and in proper order the cover locate first dynamic balance board, rotor core, second dynamic balance board, lock washer and retaining ring outside the pivot, the embedded a plurality of magnet steel that are equipped with of rotor core, the pivot is provided with spacing step and catch basin, spacing step conflicts first dynamic balance board, the inner ring of retaining ring holds and locates the catch basin, the protruding a plurality of fan blades that are equipped with in one side that rotor core was kept away from to the second dynamic balance board, and a plurality of fan blades are the annular array and distribute around the central axis of pivot, first dynamic balance board is provided with a plurality of first ventilation holes, the second dynamic balance board is provided with a plurality of second ventilation holes, rotor core is provided with a plurality of third ventilation holes, a plurality of first ventilation holes, a plurality of second ventilation holes and a plurality of third ventilation hole one-to-one intercommunication.
2. A permanent magnet machine rotor according to claim 1, characterized in that: the plurality of second ventilation holes are distributed in an annular array around the central axis of the rotating shaft, and the plurality of second ventilation holes and the plurality of fan blades are arranged at intervals.
3. A permanent magnet machine rotor according to claim 1, characterized in that: first dynamic balance board and second dynamic balance board all are provided with a plurality of balanced holes, and a plurality of balanced holes are the annular array setting around the central axis of pivot.
4. A permanent magnet machine rotor according to claim 3, characterized in that: and balance daub is filled in the balance holes.
5. A permanent magnet machine rotor according to claim 3, characterized in that: the balance hole is an inverted cone hole.
6. A permanent magnet machine rotor according to claim 3, characterized in that: all of the second vent holes are located inside the plurality of balance holes.
7. A permanent magnet machine rotor according to claim 1, characterized in that: the fan blades are in a flat plate shape or an arc shape.
8. A permanent magnet machine rotor according to claim 1, characterized in that: and reinforcing ribs are arranged on one side of the first dynamic balance plate, which is far away from the rotor core.
9. A permanent magnet machine rotor according to claim 1, characterized in that: key grooves are concavely arranged at two ends of the rotating shaft.
10. A permanent magnet machine rotor according to claim 1, characterized in that: the number of the stop washers is one or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020673392.9U CN211830456U (en) | 2020-04-27 | 2020-04-27 | Permanent magnet motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020673392.9U CN211830456U (en) | 2020-04-27 | 2020-04-27 | Permanent magnet motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211830456U true CN211830456U (en) | 2020-10-30 |
Family
ID=73020491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020673392.9U Active CN211830456U (en) | 2020-04-27 | 2020-04-27 | Permanent magnet motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211830456U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112643661A (en) * | 2020-12-17 | 2021-04-13 | 杨明芹 | Automatic change robotic arm belt pulley drive mechanism |
-
2020
- 2020-04-27 CN CN202020673392.9U patent/CN211830456U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112643661A (en) * | 2020-12-17 | 2021-04-13 | 杨明芹 | Automatic change robotic arm belt pulley drive mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230404 Address after: Building 1, No. 93, Machong Avenue, Machong Town, Dongguan City, Guangdong Province, 523000 Patentee after: Guangdong Global Electric Machinery Technology Co.,Ltd. Address before: No. 93, Machong Avenue, Machong Town, Dongguan City, Guangdong Province, 523000 Patentee before: GUANGDONG DONGGUAN ELECTRIC MOTOR Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231010 Address after: No. 93 Mayong Avenue, Mayong Town, Dongguan City, Guangdong Province, 523141 Patentee after: GUANGDONG DONGGUAN ELECTRIC MOTOR Co.,Ltd. Address before: Building 1, No. 93, Machong Avenue, Machong Town, Dongguan City, Guangdong Province, 523000 Patentee before: Guangdong Global Electric Machinery Technology Co.,Ltd. |
|
| TR01 | Transfer of patent right |