CN110474474B - Rotor hub structure of permanent magnet direct-drive motor - Google Patents
Rotor hub structure of permanent magnet direct-drive motor Download PDFInfo
- Publication number
- CN110474474B CN110474474B CN201910765660.1A CN201910765660A CN110474474B CN 110474474 B CN110474474 B CN 110474474B CN 201910765660 A CN201910765660 A CN 201910765660A CN 110474474 B CN110474474 B CN 110474474B
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- CN
- China
- Prior art keywords
- rotor hub
- fly leaf
- pivot
- rotating shaft
- movable plates
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000005389 magnetism Effects 0.000 claims 1
- 210000001503 joint Anatomy 0.000 abstract 1
- 239000000463 material Substances 0.000 description 3
- 229910000746 Structural steel Inorganic materials 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/02—Details
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/003—Couplings; Details of shafts
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention discloses a rotor hub structure of a permanent magnet direct drive motor, which comprises a rotating shaft, wherein rotor hub components are arranged on the outer side of the circumference of the rotating shaft, the rotor hub components comprise four movable plates, inscribed circles are formed inside the movable plates and are coaxial with the rotating shaft, the inside of the movable plates is in butt joint with the rotating shaft, a fracture is arranged between the movable plates, circumscribed circles formed outside the movable plates and inscribed circles inside the movable plates are coaxially arranged, connecting parts of the movable plates are arranged on two sides of the fracture of the movable plates, the connecting parts are connected through adjusting bolts, the rotor hub components are also provided with key grooves, and the rotor hub components are connected with the rotating shaft through rotor keys on the key grooves, and the rotor hub structure has the advantages that: the problem of poor weldability is solved to the rotor hub subassembly can be applicable to the pivot of equidimension according to the size requirement of pivot.
Description
Technical Field
The invention relates to the field of permanent magnet direct drive motors, in particular to a novel rotor structure of a permanent magnet direct drive motor.
Background
There are many occasions in which it is desired to reduce the motor speed (40-100 r/min) and to output a greater torque. However, with the high-speed development of power electronics technology and control technology, the improvement of the manufacturing process of permanent magnet materials and the maturing of low-speed high-torque technology are advanced, and the low-speed direct-drive permanent magnet synchronous motor is widely popularized and applied. The rotating speed of the motor is reduced, the number of poles of the motor is necessarily increased, the outer diameter of the motor is increased, and the rotor structure of the large-outer-diameter permanent magnet motor mostly adopts a hub structure because of the characteristics of the permanent magnet motor so as to save materials and reduce cost. The rotating shaft of the low-speed direct-drive permanent magnet synchronous motor often bears larger torque, so that the rotating shaft has high requirements on materials, and high-quality structural steel is selected. High-quality structural steel has high strength and hardness, but poor weldability, and cannot be welded with a hub part made of common carbon steel, so that the strength cannot be ensured, and the use of a hub structure is restricted.
Disclosure of Invention
In order to solve the problems, the invention discloses a rotor hub structure of a permanent magnet direct drive motor.
The specific technical scheme is as follows:
The utility model provides a permanent magnet direct drive motor rotor hub structure, includes the pivot, and the circumference outside of pivot is equipped with rotor hub subassembly, rotor hub subassembly includes the fly leaf, the quantity of fly leaf is four, and the inside of fly leaf forms inscribed circle coaxial with the pivot to the inside and the pivot butt of fly leaf, be equipped with the fracture between the fly leaf, the outside of fly leaf forms circumscribed circle and the inside inscribed circle coaxial setting of fly leaf, be equipped with the connecting portion of fly leaf in the fracture both sides of fly leaf, through adjusting bolted connection between the connecting portion, rotor hub subassembly still is equipped with the keyway, and rotor hub subassembly and pivot are in the same place through the rotor key connection on the keyway.
The rotor hub component and the rotating shaft are fixed through a retainer ring sleeved on the rotating shaft in an axial movement mode.
The depth of the key groove is larger than the single-side wall thickness of the movable plate.
The invention has the advantages that: the problem of poor weldability is solved to the rotor hub subassembly can be applicable to the pivot of equidimension according to the size requirement of pivot.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a right side view of FIG. 1;
Detailed Description
The present invention will be specifically described with reference to the drawings, as shown in fig. 1 and 2, a rotor hub structure of a permanent magnet direct drive motor includes a rotating shaft 1, a rotor hub assembly 2 is disposed on the outer side of the circumference of the rotating shaft 1, the rotor hub assembly 2 includes four movable plates 201, an inscribed circle 202 is formed inside the movable plates 201 and is coaxial with the rotating shaft 1, the inside of the movable plates is abutted to the rotating shaft 1, a fracture 203 is disposed between the movable plates 4, an circumscribed circle 204 formed outside the movable plates 4 and the inscribed circle 202 inside the movable plates are coaxially disposed, connection portions 205 of the movable plates are disposed on two sides of the fracture 203 of the movable plates, the connection portions 205 are connected by adjusting bolts 206, a key slot 207 is further disposed on the rotor hub assembly 2, and the rotor hub assembly 2 and the rotating shaft 1 are connected together by the rotor keys 3 on the key slot.
The rotor hub assembly 2 and the rotating shaft 1 axially float and are fixed through a retainer ring 4 sleeved on the rotating shaft.
The depth of the key groove is larger than the single-side wall thickness of the movable plate.
The working principle of the invention is as follows: the distance between the movable plates on the rotor hub assembly is adjusted firstly, the rotating shafts with different sizes are matched through the adjustment distance, then the movable blocks and the rotating shafts are fixed together through the adjustment bolts, the notch is used as an adjustment link on one hand, and is used as a key slot connected with the rotating shafts on the other hand, so that the size adjustment of the key slot is realized, and after the adjustment bolts are fixed, the rotor key is put in, and the installation of the whole process is completed.
Claims (3)
1. The utility model provides a permanent magnetism direct drive motor rotor hub structure, includes pivot, its characterized in that: the circumference outside of pivot is equipped with rotor hub subassembly, rotor hub subassembly includes the fly leaf, the quantity of fly leaf is four, and the inside formation inscribed circle of fly leaf is coaxial with the pivot to the inside and the pivot butt of fly leaf are equipped with the fracture between the fly leaf, the outside circumscribed circle that the outside of fly leaf formed and the inside inscribed circle coaxial setting of fly leaf are equipped with the connecting portion of fly leaf in the fracture both sides of fly leaf, through adjusting bolted connection between the connecting portion, rotor hub subassembly still is equipped with the keyway, and rotor hub subassembly and pivot are in the same place through the rotor key connection on the keyway.
2. The permanent magnet direct drive motor rotor hub structure according to claim 1, wherein: the rotor hub component and the rotating shaft are fixed through a retainer ring sleeved on the rotating shaft in an axial movement mode.
3. The permanent magnet direct drive motor rotor hub structure according to claim 1, wherein: the depth of the key groove is larger than the single-side wall thickness of the movable plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910765660.1A CN110474474B (en) | 2019-08-19 | 2019-08-19 | Rotor hub structure of permanent magnet direct-drive motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910765660.1A CN110474474B (en) | 2019-08-19 | 2019-08-19 | Rotor hub structure of permanent magnet direct-drive motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110474474A CN110474474A (en) | 2019-11-19 |
| CN110474474B true CN110474474B (en) | 2024-08-13 |
Family
ID=68511203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910765660.1A Active CN110474474B (en) | 2019-08-19 | 2019-08-19 | Rotor hub structure of permanent magnet direct-drive motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110474474B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210167899U (en) * | 2019-08-19 | 2020-03-20 | 抚顺煤矿电机制造有限责任公司 | Rotor hub structure of permanent magnet direct-drive motor |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR9610338A (en) * | 1995-08-18 | 2000-05-16 | Int Machinery Corp | Alternator for permanent magnetic rotor |
| WO2009039320A1 (en) * | 2007-09-20 | 2009-03-26 | Lawrence Pumps, Inc. | Polygon rotor attachment device |
| JP5664101B2 (en) * | 2010-10-08 | 2015-02-04 | 株式会社安川電機 | Rotating electric machine, wind power generation system, and rotor used for rotating electric machine |
| CN203206019U (en) * | 2013-04-26 | 2013-09-18 | 重庆东桐科技有限公司 | Rotor structure of embedded tangential magnetic field brushless direct current motor |
| CN204094014U (en) * | 2014-09-18 | 2015-01-14 | 长兴县建设工程质量监督站 | A kind of ecological revetment Portable reinforcing steel bar cutting machine |
| CN108555716A (en) * | 2018-05-28 | 2018-09-21 | 李泽南 | A kind of rotor processing surface deburring device |
| CN208835917U (en) * | 2018-10-17 | 2019-05-07 | 广州小鹏汽车科技有限公司 | The oblique pole structure of machine shaft, rotor, permanent magnet synchronous motor and electric car |
-
2019
- 2019-08-19 CN CN201910765660.1A patent/CN110474474B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210167899U (en) * | 2019-08-19 | 2020-03-20 | 抚顺煤矿电机制造有限责任公司 | Rotor hub structure of permanent magnet direct-drive motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110474474A (en) | 2019-11-19 |
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