CN202334209U - Nested type low velocity outer rotor permanent magnet motor - Google Patents
Nested type low velocity outer rotor permanent magnet motor Download PDFInfo
- Publication number
- CN202334209U CN202334209U CN2011204970013U CN201120497001U CN202334209U CN 202334209 U CN202334209 U CN 202334209U CN 2011204970013 U CN2011204970013 U CN 2011204970013U CN 201120497001 U CN201120497001 U CN 201120497001U CN 202334209 U CN202334209 U CN 202334209U
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- permanent magnet
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- rotor
- magnet motor
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Abstract
A nested type low velocity outer rotor permanent magnet motor belongs to the low velocity outer rotor permanent magnet motor field, particularly relates to a permanent magnet motor for improving the motor low velocity torque. The permanent magnet motor comprises a motor frame (7), a fixed shaft (8), a long permanent magnet fixed on an outer ring (1) of an outer rotor, and an outer stator armature winding arranged on a stator support (9). The permanent magnet motor is characterized in that auxiliary motors are arranged on the stator support (9) inside the outer rotor through a stator support ring (10), and the auxiliary motors are formed by the gap nested installation of inner stators and inner rotors. According to the nested type low velocity outer rotor permanent magnet motor, a plurality of auxiliary motors are added by utilizing the nested type structure, and space inside the original motor is fully used. The permanent magnet motor has the advantages of a compact structure, a large motor output torque and the like, and improves the torque per unit volume of the motor.
Description
Technical field
A kind of nested type low speed outer-rotor permanent magnet motor belongs to low speed outer-rotor permanent magnet motor field, is specifically related to a kind of permanent magnet motor that improves the motor low speed torque.
Background technology
The low speed external rotor electric machine is widely used in direct-drive oil extractor on the oil field etc. and directly drives occasion; Because its external diameter is bigger; Number of poles is more, magnetic flux mainly in iron core more shallow part flow through, and all be available near a big chunk space of stator fixed axis; Inside has more space to leave unused, and is not fully utilized.Therefore, more need a kind of output torque that can under the prerequisite that does not change the motor external dimensions, increase motor, can make full use of the permanent magnet direct driving motor of the low speed external rotor of motor internal idle space.
Summary of the invention
The technical problem that the utility model will solve is: overcome the deficiency of prior art, a kind of stator core inner space, nested type low speed outer-rotor permanent magnet motor that motor output torque is big of making full use of is provided.
The utility model solves the technical scheme that its technical problem adopted: this kind nested type low speed outer-rotor permanent magnet motor; Comprise frame, fixed axis, be fixed on the long permanent magnet on the external rotor outer ring and be installed in the armature winding on the stator support; It is characterized in that: on the inner stator support of described external rotor, through the stator support circle stand-by motor is installed, stand-by motor is formed by internal stator and internal rotor installation nested against one another.Make full use of the inner space of motor, produce additional electromagnetic torque, improve the torque of unit volume.
Described stand-by motor is provided with a plurality of, divides the both sides that are fixedly mounted on stator support of two groups of symmetries.
The internal stator of described stand-by motor is made up of with the short stator coil that is installed on the stator punching the stator punching that is installed in through dovetail groove on the stator support circle.
Described external rotor end cap inwall is provided with inwardly outstanding inner ring, and inner ring fixedly mounts a plurality of short permanent magnets through mounting groove, and a plurality of short permanent magnets form the internal rotor of stand-by motor.
The number of poles of every layer of internal rotor permanent-magnetic iron core of described stand-by motor is identical with the number of poles of internal stator armature core; Internal stator keeps the number of poles of axiality installation and winding identical with external stator; The number of poles of external rotor and internal rotor is identical, and magnetic pole is identical in the position of circumference.In order to produce rotating magnetic field, the output torque that increases motor with the frequency homophase.
Described stator punching is formed by silicon steel plate stacking, and an end is provided with dovetail groove, and the other end is provided with the coil mounting groove, through the embedded installation short stator of mounting groove coil.
Described long permanent magnet is fixedly mounted on the external rotor outer ring, and the external rotor outer ring is fixedly connected through long bolt on the two external rotor end caps.
Described external rotor outer ring is made by the cast steel material of magnetic conduction and forms.
Compared with prior art, the beneficial effect that the utility model had is:
1, through the inner ring of stator support circle on stator support and external rotor end cap internal stator and internal rotor are installed; Form a plurality of stand-by motors thus; Make the inner space of this motor fully be utilized; And effectively raise the output torque of motor, will be through the electromagnetic torque that experiment showed, its generation than wanting high by 30～60% with the motor of volume;
2, internal stator adopts the nested mode in interval to install with internal rotor; Make full use of the inner space of motor; Make that the internal structure of motor is compacter; Do not increase the external dimensions of original motor, thereby further improved the carrying load ability of slowspeed machine, be particularly useful for the occasion of oil field with low speed high torques such as direct-drive oil extractors.
Description of drawings
Fig. 1 is the utility model front view cross-sectional schematic.
Fig. 2 is the A-A cross-sectional schematic of the utility model Fig. 1.
Fig. 3 is the external rotor end cap cutaway view sketch map of the utility model.
Fig. 4 is the silicon steel structure sketch map of the stator punching of the utility model.
Fig. 5 is the front view cross-sectional schematic of the stator support circle of the utility model.
Fig. 6 is the end view structural representation of the stator support circle of the utility model.
Fig. 7 is the front view cross-sectional schematic of the stator support of the utility model.
Fig. 8 is the end view structural representation of the stator support of the utility model.
Wherein: 1, external rotor outer ring 2, long bolt 3, long permanent magnet 4, short permanent magnet 5, external rotor end cap 6, short screw 7, frame 8, fixed axis 9, stator support 10, stator support circle 11, long flat key 12, bearing cap 13, bearing 14, little back-up ring 15, stator punching 16, big back-up ring 17, long stator coil 18, short stator coil.
Fig. 1～8th, the most preferred embodiment of the utility model further specifies below in conjunction with 1～8 pair of the utility model of accompanying drawing:
Embodiment
With reference to accompanying drawing 1～8:
This kind nested type low speed outer-rotor permanent magnet motor; The long permanent magnet 3, external rotor end cap 5, frame 7, the fixed axis 8 that comprise external rotor outer ring 1, long bolt 2, be fixed on the external rotor outer ring 1 are installed in the armature winding on the stator support 9; Fixed axis 8 connects on the frame 7 through flat key; Can not relatively rotate between the two, fixed axis 8 middle parts are through long flat key 11 installation stator supports 9, and stator support circle 10 is through short screw 6 stator support 9 that is fixedly connected; Bearing 13 is installed at fixed axis 8 two ends, and bearing 13 and fixed axis 8 are fixed through interference fit.
Long permanent magnet 3 is fixedly mounted on the external rotor outer ring 1, and external rotor outer ring 1 is fixedly connected through long bolt 2 on the two external rotor end caps 5, and external rotor outer ring 1 is made by the cast steel material of magnetic conduction and forms.
Through stator support circle 10 stand-by motor is installed on the stator support 9 of internal rotor outside, stand-by motor is formed by internal stator and internal rotor installation nested against one another.Stand-by motor is provided with a plurality of; The both sides that are fixedly mounted on stator support 9 of dividing two groups of symmetries; The internal stator of stand-by motor is made up of with the short stator coil 18 that is installed on the stator punching 15 stator punching 15 that is installed in through dovetail groove on the stator support circle 10; External rotor end cap 5 inwalls are provided with inwardly outstanding inner ring, and inner ring fixedly mounts a plurality of short permanent magnets 4 through mounting groove, and a plurality of short permanent magnets 4 form the internal rotor of stand-by motor.
The number of poles of every layer of internal rotor permanent-magnetic iron core of each stand-by motor is identical with the number of poles of internal stator armature core, and internal stator keeps the number of poles of axiality installation and winding identical with external stator, and the number of poles of external rotor and internal rotor is identical, and magnetic pole is identical in the position of circumference.
The course of work is following:
The principle of the utility model is nested against one another through with multilayer internal layer rotor, makes full use of the limited space of motor internal as much as possible, lays the permanent magnet and the coil that produce electromagnetic torque.
The winding that stator punching 15 on long permanent magnet 3 on the external rotor outer ring 1 and the stator support circle 10 that is installed in its inner ring and long stator coil 17 form forms the external rotor and the external stator of motor; Also be the main rotor and the main stator of this motor, produce main electromagnetic torque thus; The stator punching of installing on the short permanent magnet 4 its corresponding stator support circles on the external rotor end cap 5 15 forms secondary rotor and auxiliary stator with the winding that short stator coil 18 forms; Be internal rotor and internal stator; In order to make full use of the inner space of motor, produce additional electromagnetic torque.
In order to produce the rotating magnetic field with the frequency homophase, main stator is identical with the number of poles of auxiliary stator winding, and the winding axis position must be identical; The number of poles of main rotor and secondary rotor is also identical, and magnetic pole is identical in the position of circumference.
The magneto of the utility model is exported in order under any rotating speed, to obtain torque when work; Need position detector to detect the stator and rotor relative position; Power inverter produces the synchronous rotating magnetic field identical with rotating speed according to this position input current in winding.
Owing to increased auxiliary stator and secondary rotor; The inner space of this motor is fully utilized; Internal structure of motor is compacter, wants high by 30～60% with the motor of volume through the electromagnetic torque that experiment showed, its generation; Thereby effectively raise the carrying load ability of slowspeed machine, be particularly useful for the oil field and use the low-speed direct driving type oil pumper.
The above; It only is the preferred embodiment of the utility model; Be not to be the restriction of the utility model being made other form, any professional and technical personnel of being familiar with possibly utilize the technology contents of above-mentioned announcement to change or be modified as the equivalent embodiment of equivalent variations.But every the utility model technical scheme content that do not break away to any simple modification, equivalent variations and remodeling that above embodiment did, still belongs to the protection range of the utility model technical scheme according to the technical spirit of the utility model.
Claims (8)
1. nested type low speed outer-rotor permanent magnet motor; Comprise frame (7), fixed axis (8), be fixed on the long permanent magnet (3) on the external rotor outer ring (1) and be installed in the external stator armature winding on the stator support (9); It is characterized in that: go up through stator support circle (10) at the inner stator support (9) of described external rotor stand-by motor is installed, stand-by motor is formed by internal stator and internal rotor installation nested against one another.
2. a kind of nested type low speed outer-rotor permanent magnet motor according to claim 1, it is characterized in that: described stand-by motor is provided with a plurality of, divides the both sides that are fixedly mounted on stator support (9) of two groups of symmetries.
3. a kind of nested type low speed outer-rotor permanent magnet motor according to claim 2 is characterized in that: the internal stator of described stand-by motor is made up of the short stator coil (18) that is installed in the stator punching (15) on the stator support circle (10) through dovetail groove and be installed on the stator punching (15).
4. a kind of nested type low speed outer-rotor permanent magnet motor according to claim 1; It is characterized in that: described external rotor end cap (5) inwall is provided with inwardly outstanding inner ring; Inner ring fixedly mounts a plurality of short permanent magnets (4) through mounting groove, and a plurality of short permanent magnets (4) form the internal rotor of stand-by motor.
5. according to the arbitrary described a kind of nested type low speed outer-rotor permanent magnet motor of claim 1～3; It is characterized in that: the number of poles of every layer of internal rotor permanent-magnetic iron core of described stand-by motor is identical with the number of poles of internal stator armature core; Internal stator keeps the number of poles of axiality installation and winding identical with external stator; The number of poles of external rotor and internal rotor is identical, and magnetic pole is identical in the position of circumference.
6. a kind of nested type low speed outer-rotor permanent magnet motor according to claim 3; It is characterized in that: described stator punching (15) is formed by silicon steel plate stacking; One end is provided with dovetail groove, and the other end is provided with the coil mounting groove, through the embedded installation short stator of mounting groove coil (18).
7. a kind of nested type low speed outer-rotor permanent magnet motor according to claim 1 is characterized in that: described long permanent magnet (3) is fixedly mounted on the external rotor outer ring (1), and external rotor outer ring (1) is fixedly connected through long bolt (2) on the two external rotor end caps (5).
8. a kind of nested type low speed outer-rotor permanent magnet motor according to claim 7 is characterized in that: described external rotor outer ring (1) is made by the cast steel material of magnetic conduction and forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204970013U CN202334209U (en) | 2011-12-02 | 2011-12-02 | Nested type low velocity outer rotor permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204970013U CN202334209U (en) | 2011-12-02 | 2011-12-02 | Nested type low velocity outer rotor permanent magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202334209U true CN202334209U (en) | 2012-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204970013U Expired - Fee Related CN202334209U (en) | 2011-12-02 | 2011-12-02 | Nested type low velocity outer rotor permanent magnet motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202334209U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102386732A (en) * | 2011-12-02 | 2012-03-21 | 山东理工大学 | Nested low-speed outer rotor permanent magnet motor |
-
2011
- 2011-12-02 CN CN2011204970013U patent/CN202334209U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102386732A (en) * | 2011-12-02 | 2012-03-21 | 山东理工大学 | Nested low-speed outer rotor permanent magnet motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20131202 |