CN105071557A - Permanent magnetic direct-drive motor - Google Patents
Permanent magnetic direct-drive motor Download PDFInfo
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- CN105071557A CN105071557A CN201510506319.6A CN201510506319A CN105071557A CN 105071557 A CN105071557 A CN 105071557A CN 201510506319 A CN201510506319 A CN 201510506319A CN 105071557 A CN105071557 A CN 105071557A
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- rotor
- permanent magnet
- support
- stator coil
- central shaft
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Abstract
The invention discloses a permanent magnetic direct-drive motor which comprises a support and a stator coil and a rotor in the support, wherein the rotor is rotatablely arranged outside the stator coil, air gaps of 0.6-3mm are formed by gaps between the rotor and the stator coil, and permanent magnets are arranged on the inner wall of the rotor. The rotor is fixedly connected with a center pin, the end portion of the center pin is provided with an encoder, and a bearing is arranged between the center pin and a support housing. When the permanent magnets are fixed and the air gaps are 0.6-3mm, the air gap increases as the motor power increases, and the air gap becomes smaller as the motor power decreases, thereby realizing weak magnetic. Interference between a magnetizing field and a rotating field is prevented, the energy consumption is reduced, and the efficiency increases by 5%.
Description
Technical field
The invention belongs to machine field, more specifically relate to a kind of permanent magnet direct driving motor.
Background technology
Traditional retarding device equipment is mainly combined by frequency converter, asynchronous machine and reductor.Asynchronous machine complex structure, when load factor is lower, efficiency is lower, and total system volume is larger.Asynchronous machine connects reductor in start-up course, and starting current is comparatively large, has impact to electrical network.Under the operating mode of low-speed and large-torque, if make direct drive permanent magnetic synchronous machine, although designs simplification, efficiency is higher, and volume and weight is very large, and cost is higher.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of low-speed permanent-magnet torque motor.
In order to obtain above-mentioned technique effect, technical scheme of the present invention is as follows:
Permanent magnet direct driving motor, the stator coil comprising support and be arranged in support and rotor, rotor can be rotatably set in the outside of stator coil, space between rotor and stator coil forms air gap, air gap is 0.6 ~ 3mm, rotor inner wall is provided with permanent magnet, and rotor is fixedly connected with central shaft, is provided with bearing between central shaft and support shell.
Its beneficial effect is: fix at permanent magnet, and when air gap is 0.6 ~ 3mm, power of motor is larger, and air gap is larger, power of motor is less, and air gap is less, thus achieves weak magnetic, exciting field is not interfere with each other mutually with rotating magnetic field, decreases energy consumption, the efficiency of 5% can be improved.
In some embodiments, the end of central shaft is provided with encoder.
Its beneficial effect is: encoder is connected with servo controller, is controlled the infinitely variable speeds of motor by servo controller by encoder.
In some embodiments, deep groove ball bearing is provided with between central shaft and support.
Its beneficial effect is: deep groove ball bearing ensures the relative rotation between central shaft and support.
In some embodiments, permanent magnet adopts rare earth material to make.
Its beneficial effect is: the magnetic of the permanent magnet that rare earth material makes is comparatively stable.
In some embodiments, rare earth material is neodymium iron boron.
Its beneficial effect is: the magnetic of the permanent magnet that neodymium iron boron makes is excellent.
Accompanying drawing explanation
Fig. 1 is the structural representation of the permanent magnet direct driving motor of an embodiment of the present invention.
The title of the corresponding component in figure represented by numeral:
1, support, 2, stator coil, 3, rotor, 4, permanent magnet, 5, central shaft, 51, deep groove ball bearing, 511, fore bearing gland, 512, rear bearing gland, 52, shaft block ring, 6, encoder, 7, brake terminal box, 71, Cross Recess Head Screw.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further illustrated, and the specific embodiment that this place is described is only for explaining the present invention, but not the restriction to this invention.
As shown in Figure 1, the present invention discloses a kind of permanent magnet direct driving motor, comprises support 1 and the stator coil 2 that is arranged in support 1 and rotor 3.Rotor 3 can be rotatably set in the outside of stator coil 2.Space between rotor 3 and stator coil 2 forms air gap, and air gap is 0.6 ~ 3mm.Rotor 3 inwall is provided with permanent magnet 4.Rotor 3 is fixedly connected with central shaft 5.Bearing is provided with between central shaft 5 and support 1.Fix at permanent magnet, when air gap is 0.6 ~ 3mm, power of motor is larger, and air gap is larger, and power of motor is less, and air gap is less, thus achieves weak magnetic, exciting field is not interfere with each other mutually with rotating magnetic field, decreases energy consumption, can improve the efficiency of 5%.
In the present embodiment, permanent magnet 4 adopts rare earth material to make.The magnetic of the permanent magnet that rare earth material makes is comparatively stable.Rare earth material selects neodymium iron boron.The magnetic of the permanent magnet that neodymium iron boron makes is excellent.The end of central shaft 5 is provided with encoder 6, and the end winding support of central shaft 5 is connected with rotation absolute value encoder, rotates absolute value encoder and is connected with servo controller, controlled the infinitely variable speeds of motor by servo controller by encoder 6.Central shaft 5 is connected with support 1 by two deep groove ball bearings 51.Deep groove ball bearing 51 ensures the relative rotation between central shaft 5 and support 1.Central shaft 5 is arranged with two shaft block rings 52, shaft block ring 52 is fitted with the end face of deep groove ball bearing 51, prevents central shaft 5 play.Support 1 is provided with fore bearing gland 511 and rear bearing gland 512, deep groove ball bearing 51 is compressed by fore bearing gland 511 and rear bearing gland 512.Support 1 is provided with connection box for motor and brake terminal box 7.The first binding post is provided with in connection box for motor.Brake terminal box 6 is provided with Cross Recess Head Screw 71, for fixing brake terminal box 7.Support 1 is provided with suspension ring, for being sling by motor.
The preferred implementation of above-described permanent magnet direct driving motor of the present invention; not thereby the scope of the claims of the present invention is limited; every specification of the present invention and accompanying drawing content of utilizing makes equivalent structure transformation; or be directly or indirectly used in other relevant technical fields, be all in like manner included in protection scope of the present invention.
Claims (5)
1. permanent magnet direct driving motor, the stator coil comprising support and be arranged in support and rotor, it is characterized in that, described rotor can be rotatably set in the outside of stator coil, space between described rotor and stator coil forms air gap, and described air gap is 0.6 ~ 3mm, and described rotor inner wall is provided with permanent magnet, described rotor is fixedly connected with central shaft, is provided with bearing between described central shaft and support shell.
2. permanent magnet direct driving motor according to claim 1, is characterized in that, the end of described central shaft is provided with encoder.
3. permanent magnet direct driving motor according to claim 1, is characterized in that, is provided with deep groove ball bearing between described central shaft and support.
4. permanent magnet direct driving motor according to claim 1, is characterized in that, described permanent magnet adopts rare earth material to make.
5. permanent magnet direct driving motor according to claim 3, is characterized in that, described rare earth material is neodymium iron boron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510506319.6A CN105071557A (en) | 2015-08-17 | 2015-08-17 | Permanent magnetic direct-drive motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510506319.6A CN105071557A (en) | 2015-08-17 | 2015-08-17 | Permanent magnetic direct-drive motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105071557A true CN105071557A (en) | 2015-11-18 |
Family
ID=54500867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510506319.6A Pending CN105071557A (en) | 2015-08-17 | 2015-08-17 | Permanent magnetic direct-drive motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105071557A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109713810A (en) * | 2019-02-03 | 2019-05-03 | 大庆浩维石油科技开发有限公司 | A kind of half direct-drive type flat permanent magnetic torque motor used for oil extractor |
-
2015
- 2015-08-17 CN CN201510506319.6A patent/CN105071557A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109713810A (en) * | 2019-02-03 | 2019-05-03 | 大庆浩维石油科技开发有限公司 | A kind of half direct-drive type flat permanent magnetic torque motor used for oil extractor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151118 |