CN202353411U - Explosion-proof type low-frequency permanent-magnet three-phase synchronous motor for mine - Google Patents
Explosion-proof type low-frequency permanent-magnet three-phase synchronous motor for mine Download PDFInfo
- Publication number
- CN202353411U CN202353411U CN2011205233673U CN201120523367U CN202353411U CN 202353411 U CN202353411 U CN 202353411U CN 2011205233673 U CN2011205233673 U CN 2011205233673U CN 201120523367 U CN201120523367 U CN 201120523367U CN 202353411 U CN202353411 U CN 202353411U
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- explosion
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- proof
- synchronous motor
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Abstract
The utility model relates to a permanent-magnet motor, in particular to an explosion-proof type low-frequency permanent-magnet three-phase synchronous motor for a mine. With the explosion-proof type low-frequency permanent-magnet three-phase synchronous motor for a mine, the problems of low starting torque, low power factor and large electric-energy loss in the traditional explosion-proof type asynchronous motors are solved. The explosion-proof type low-frequency permanent-magnet three-phase synchronous motor comprises an explosion-proof front-end cover, an explosion-proof machine base, a stator, a permanent-magnet rotor, an explosion-proof rear-end cover, an explosion-proof wiring box and a rotating shaft, wherein the polar distance of the permanent-magnet rotor is one groove. According to the explosion-proof type low-frequency permanent-magnet three-phase synchronous motor, the problems of low starting torque, low power factor and large electric-energy loss in the traditional explosion-proof type asynchronous motor are effectively solved, and the explosion-proof type low-frequency permanent-magnet three-phase synchronous motor is applicable to underground coal mines.
Description
Technical field
The utility model relates to permanent magnet motor, is specially a kind of flame-proof mine low frequency triphase synchronous motor.
Background technology
Present stage, generally use the flame-proof type asynchronous motor under the coal mine.Practice shows, the flame-proof type asynchronous motor is because detent torque is little, power factor is low, electric energy loss is big, and its rate of failure height that is in operation, overall efficiency are low, and burn easily, cause very big economic loss thus.Based on this, be necessary to invent a kind of brand-new flameproof motor, to solve the existing problem that flame-proof type asynchronous motor detent torque is little, power factor is low and electric energy loss is big.
Summary of the invention
The utility model provides a kind of flame-proof mine low frequency triphase synchronous motor in order to solve the existing problem that flame-proof type asynchronous motor detent torque is little, power factor is low and electric energy loss is big.
The utility model is to adopt following technical scheme to realize: flame-proof mine low frequency triphase synchronous motor comprises explosion-proof front end housing, fireproof frame, stator, p-m rotor, explosion-proof rear end cap, anti-explosion terminal box, rotating shaft; The pole span of p-m rotor is 1 groove.
During work,, make p-m rotor form the groove number multistage few groove structure close with progression because the pole span of p-m rotor is 1 groove; And then make the end of rotor winding shorten; Help reducing the winding copper loss, thereby help improving electric efficiency, and help realizing the flattening of motor.Based on this; The described flame-proof mine low frequency of the utility model triphase synchronous motor can solve the existing problem that flame-proof type asynchronous motor detent torque is little, power factor is low and electric energy loss is big, has avoided its rate of failure height that is in operation, problem that overall efficiency is low thus.
The utility model is simple in structure, reasonable in design, efficiently solves the existing problem that flame-proof type asynchronous motor detent torque is little, power factor is low and electric energy loss is big, is applicable under the coal mine.
Description of drawings
Fig. 1 is the overall structure sketch map of the utility model.
Fig. 2 is the structural representation of the surface-mount type magnetic pole of the utility model.
Fig. 3 is the structural representation of the built-in magnetic pole of the utility model.
Among the figure: the explosion-proof front end housing of 1-, 2-fireproof frame, 3-stator, 4-p-m rotor, the explosion-proof rear end cap of 5-, 6-anti-explosion terminal box, 7-rotating shaft, 8-tile shape permanent magnet, 9-locating wedge, 10-screw, 11-top rake, 12-interior permanent magnets, 13-silicon steel sheet, 14-dovetail groove.
Embodiment
Embodiment one
Flame-proof mine low frequency triphase synchronous motor comprises explosion-proof front end housing 1, fireproof frame 2, stator 3, p-m rotor 4, explosion-proof rear end cap 5, anti-explosion terminal box 6, rotating shaft 7; The pole span of p-m rotor 4 is 1 groove;
The magnetic pole of p-m rotor 4 is the surface-mount type magnetic pole; Said surface-mount type magnetic pole comprises tile shape permanent magnet 8, locating wedge 9 and screw 10; Tile shape permanent magnet 8 is pasted and is fixed on the support of p-m rotor 4, and the radial section two ends of tile shape permanent magnet 8 are provided with top rake 11; Locating wedge 9 is arranged in the gap of tile shape permanent magnet 8, and locating wedge 9 is fixed on the rotor field spider of p-m rotor 4 through screw 10; Top rake is set helps reducing torque ripple and noise pollution; Locating wedge plays the effect of fixed permanent magnet on the one hand, plays the effect of locating when pasting permanent magnet on the other hand;
The angle of said top rake 11 is the 20-80 degree;
Said screw 10 is non-magnetic conduction screw; Non-magnetic conduction screw can prevent leakage field;
The end face of p-m rotor 4 is provided with flabellum; Flabellum can stir the air of motor internal, makes the uniform heat distribution of motor internal, prevents the local overheating of permanent magnet;
During practical implementation, p-m rotor adopts the groove number multistage few groove structure close with progression, and number of poles adopts the high number of poles of the 20-32 utmost point, and the groove number adopts the 10-12 groove, the 8-9 groove, and the fit form of 11-12 groove, rotor yoke employing magnetic property steel is preferably processed.
Embodiment two
Flame-proof mine low frequency triphase synchronous motor comprises explosion-proof front end housing 1, fireproof frame 2, stator 3, p-m rotor 4, explosion-proof rear end cap 5, anti-explosion terminal box 6, rotating shaft 7; The pole span of p-m rotor 4 is 1 groove;
The magnetic pole of p-m rotor 4 is built-in magnetic pole; Said built-in magnetic pole comprises interior permanent magnets 12, silicon steel sheet 13 and dovetail groove 14; Interior permanent magnets 12 is wrapped in the silicon steel sheet 13, and silicon steel sheet 13 is fixed on the rotor field spider of p-m rotor 4 through dovetail groove 14; Built-in magnetic pole helps saving silicon steel sheet, and plays the effect of protection permanent magnet;
The end face of p-m rotor 4 is provided with flabellum; Flabellum can stir the air of motor internal, makes the uniform heat distribution of motor internal, prevents the local overheating of permanent magnet;
During practical implementation, p-m rotor adopts the groove number multistage few groove structure close with progression, and number of poles adopts the high number of poles of the 20-32 utmost point, and the groove number adopts 10-12 groove, 8-9 groove, the fit form of 11-12 groove.
Claims (7)
1. a flame-proof mine low frequency triphase synchronous motor comprises explosion-proof front end housing (1), fireproof frame (2), stator (3), p-m rotor (4), explosion-proof rear end cap (5), anti-explosion terminal box (6), rotating shaft (7); It is characterized in that: the pole span of p-m rotor (4) is 1 groove.
2. flame-proof mine low frequency triphase synchronous motor according to claim 1 is characterized in that: the magnetic pole of p-m rotor (4) is the surface-mount type magnetic pole; Said surface-mount type magnetic pole comprises tile shape permanent magnet (8), locating wedge (9) and screw (10); Tile shape permanent magnet (8) is pasted and is fixed on the support of p-m rotor (4), and the radial section two ends of tile shape permanent magnet (8) are provided with top rake (11); Locating wedge (9) is arranged in the gap of tile shape permanent magnet (8), and locating wedge (9) is fixed on the rotor field spider of p-m rotor (4) through screw (10).
3. flame-proof mine low frequency triphase synchronous motor according to claim 2 is characterized in that: the angle of said top rake (11) is the 20-80 degree.
4. according to claim 2 or 3 described flame-proof mine low frequency triphase synchronous motors, it is characterized in that: said screw (10) is non-magnetic conduction screw.
5. flame-proof mine low frequency triphase synchronous motor according to claim 1 is characterized in that: the magnetic pole of p-m rotor (4) is built-in magnetic pole; Said built-in magnetic pole comprises interior permanent magnets (12), silicon steel sheet (13) and dovetail groove (14); Interior permanent magnets (12) is wrapped in the silicon steel sheet (13), and silicon steel sheet (13) is fixed on the rotor field spider of p-m rotor (4) through dovetail groove (14).
6. flame-proof mine low frequency triphase synchronous motor according to claim 4 is characterized in that: the end face of p-m rotor (4) is provided with flabellum.
7. flame-proof mine low frequency triphase synchronous motor according to claim 5 is characterized in that: the end face of p-m rotor (4) is provided with flabellum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205233673U CN202353411U (en) | 2011-12-15 | 2011-12-15 | Explosion-proof type low-frequency permanent-magnet three-phase synchronous motor for mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205233673U CN202353411U (en) | 2011-12-15 | 2011-12-15 | Explosion-proof type low-frequency permanent-magnet three-phase synchronous motor for mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202353411U true CN202353411U (en) | 2012-07-25 |
Family
ID=46542374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205233673U Ceased CN202353411U (en) | 2011-12-15 | 2011-12-15 | Explosion-proof type low-frequency permanent-magnet three-phase synchronous motor for mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202353411U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104201802A (en) * | 2014-09-04 | 2014-12-10 | 常州鹏腾能源科技有限公司 | Extruder propelling threaded rod direct driving multi-pole few-slot permanent magnet motor |
| CN109347291A (en) * | 2018-12-04 | 2019-02-15 | 兖矿东华重工有限公司 | The explosion-proof constant speed permasyn morot of mining scraper machine |
-
2011
- 2011-12-15 CN CN2011205233673U patent/CN202353411U/en not_active Ceased
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104201802A (en) * | 2014-09-04 | 2014-12-10 | 常州鹏腾能源科技有限公司 | Extruder propelling threaded rod direct driving multi-pole few-slot permanent magnet motor |
| CN109347291A (en) * | 2018-12-04 | 2019-02-15 | 兖矿东华重工有限公司 | The explosion-proof constant speed permasyn morot of mining scraper machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| IW01 | Full invalidation of patent right | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20180612 Decision number of declaring invalidation: 36216 Granted publication date: 20120725 |