CN101645639A - Permanent magnet synchronous motor rotor magnetic steel anti-shedding mechanism - Google Patents
Permanent magnet synchronous motor rotor magnetic steel anti-shedding mechanism Download PDFInfo
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- CN101645639A CN101645639A CN200910148133A CN200910148133A CN101645639A CN 101645639 A CN101645639 A CN 101645639A CN 200910148133 A CN200910148133 A CN 200910148133A CN 200910148133 A CN200910148133 A CN 200910148133A CN 101645639 A CN101645639 A CN 101645639A
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Abstract
The invention provides a permanent magnet synchronous motor rotor magnetic steel anti-shedding mechanism, comprising a magnetic pole piece, magnetic steel baffles and a pull rod bolt, the inner side of the magnetic pole piece is subject to priming and provided with a bolt hole, the upside and downside of the magnetic pole piece are respectively covered with a layer of magnetic steel baffle that isdrilled with a through hole which is of the same size as the bolt hole and corresponds to the bolt hole in terms of position, the composed magnetic stamped steel is subject to lamination and pressurecasting followed by start of mouse cage to form the bolt hole with certain length, the magnetic steel baffles are fixed with a rotor stamped steel by the pull rod bolt and a nut, and simultaneously the magnetic steel is pressed tightly in the groove of the magnetic steel, thus the magnetic steel, the rotor stamped steel and the magnetic steel baffle are connected to be integral. The invention hasthe beneficial effects that during the running process of the motor, the problem of mutual friction and abrasion between parts and components does not exist, and additional motor noise is avoided; the motor rotor magnetic field maintains stable, no shedding phenomenon for the motor magnetic steel exist, and unexpected damage probability of the motor is reduced.
Description
Technical field
The present invention relates to the permagnetic synchronous motor field, relate in particular to a kind of permanent magnet synchronous motor rotor magnetic steel anti-shedding mechanism.
Background technology
Present used for oil extractor permagnetic synchronous motor aspect, its rotor punching can be set to integrative-structure, some blocks of magnet steel are placed in the magnet steel groove that the magnet steel hole by punching is formed by stacking, magnet steel is blocked with the magnet steel baffle plate in two ends, and then withstand the magnet steel baffle plate with clamping sleeve, with holding screw clamping sleeve is fixed on the motor shaft.But because clamping sleeve and magnet steel baffle plate and motor shaft are the structures of matched in clearance, its unique tightening point is the holding screw of clamping sleeve and a contact point of motor shaft; Motor is in running, and clamping sleeve, magnet steel baffle plate all rotate with motor shaft, because vibration, whipping property or temperature difference influence, it is loosening to cause holding screw and motor shaft to produce, and tightening was lost efficacy; After inefficacy, the magnet steel baffle plate will move axially along motor shaft with clamping sleeve, can produce following phenomenon: 1) magnet steel baffle plate, mutually mutual friction asynchronous with motor rotational shaft speed, produce heat and make the rising of motor internal temperature, influence motor performance, influence electrical machinery life with clamping sleeve; 2) the magnet steel baffle plate is in a single day loosening, in motor operation course, with rotor punching and clamping sleeve bump, produces noise vertically; 3) because magnet steel exists the opposite sex to repel each other, after the magnet steel baffle plate is loosening, the magnet steel in the magnet steel groove will skid off to two ends of rotor, thereby make rotor internal magnetic field strength reduction, directly influence power of motor and moment of torsion, and motor was lost efficacy; 4) when the magnet steel baffle plate is loosening, cause the magnet steel monoblock to skid off the magnet steel groove, cause rotor stuck, make whole burn-down of electric motor.
Summary of the invention
At above defective, the objective of the invention is by the rotor punching structure is improved, thereby avoid the loosening and magnet steel of magnet steel baffle plate to escape from and improve operational efficiency.
For achieving the above object, the present invention is achieved through the following technical solutions:
A kind of permanent magnet synchronous motor rotor magnetic steel anti-shedding mechanism, comprise pole piece, the magnet steel baffle plate, stay-bolt, the rotor punching of being made up of the plurality of magnetic pole piece is structure as a whole, inboard pre-the dashing of described pole piece is provided with bolt hole, the both sides up and down of pole piece cover one deck magnet steel baffle plate, get out on the described magnet steel baffle plate and the identical and corresponding through hole in position of bolt hole size, the pole lamination of being formed through laminate with the die casting started squirrel-cage after form the bolt hole of certain-length, described magnet steel baffle plate is fixed itself and rotor punching by stay-bolt and nut, simultaneously magnet steel is pressed in the magnet steel groove, thereby with magnet steel, rotor punching and magnet steel baffle plate connect into integral body.
The beneficial effect of permanent magnet synchronous motor rotor magnetic steel anti-shedding mechanism of the present invention is: there is not the mutual friction and wear problem between part in motor in running, stopped the noise of motor of extra increase; It is stable that rotor magnetic field keeps, and there is not obscission in the magnet steel of motor, reduced the probability of the unexpected damage of motor.
Description of drawings
According to embodiment and accompanying drawing the present invention is described in further detail below.
Fig. 1 is the pole lamination schematic diagram of the described magnetic steel anti-shedding mechanism of the embodiment of the invention;
Fig. 2 is the described magnetic steel anti-shedding mechanism schematic diagram of the embodiment of the invention;
Fig. 3 is the application schematic diagram of the described magnetic steel anti-shedding mechanism of the embodiment of the invention.
Among the figure:
1, pole piece; 2, magnet steel groove; 3, cage ring; 4, machine shaft hole; 5, rotating shaft; 6, magnet steel; 7, magnet steel baffle plate; 8, bolt hole; 9, stay-bolt; 10, sliver hole.
Embodiment
As Figure 1-3, permanent magnet synchronous motor rotor magnetic steel anti-shedding mechanism of the present invention, comprise pole piece 1, magnet steel baffle plate 7, stay-bolt 9, the rotor punching of being made up of plurality of magnetic pole piece 1 is structure as a whole, be provided with the magnet steel groove 2 that is plugged with magnet steel 6 of both ends open between the described pole piece 1, plurality of magnetic pole piece 1 wound motor shaft hole 4 is formed rotor punching, inboard pre-the dashing of described pole piece 1 is provided with bolt hole 8, the both sides up and down of pole piece 1 cover one deck magnet steel baffle plate 7, get out on the described magnet steel baffle plate 7 and the identical and corresponding through hole in position of bolt hole 8 sizes, some rotor punchings through laminate with the die casting started squirrel-cage after, form the bolt hole 8 of certain-length, some blocks of magnet steel 6 are filled in magnet steel groove 2, the magnet steel baffle plate 7 at two ends is fixed itself and rotor punching by stay-bolt 9 and nut, simultaneously magnet steel 6 is pressed in the magnet steel groove 2, thereby with magnet steel 6, rotor punching and magnet steel baffle plate 7 connect into integral body, make motor in running, because correlated parts has been formed one, thereby avoided the phenomenon that the magnet steel baffle plate is loosening and magnet steel skids off; Pole piece 1 outer end of twisted rotary shaft 5 is provided with the sliver hole 10 of die casting started squirrel-cage end ring 3 usefulness.
Claims (3)
1, a kind of permanent magnet synchronous motor rotor magnetic steel anti-shedding mechanism, comprise pole piece, magnet steel baffle plate, stay-bolt, the rotor punching of being made up of the plurality of magnetic pole piece is structure as a whole, it is characterized in that: inboard pre-the dashing of described pole piece is provided with bolt hole, the both sides up and down of pole piece cover one deck magnet steel baffle plate, get out on the described magnet steel baffle plate and the identical and corresponding through hole in position of bolt hole size.
2, permanent magnet synchronous motor rotor magnetic steel anti-shedding mechanism according to claim 1 is characterized in that: described pole lamination through laminate with the die casting started squirrel-cage after form the bolt hole of certain-length.
3, permanent magnet synchronous motor rotor magnetic steel anti-shedding mechanism according to claim 1 is characterized in that: described magnet steel baffle plate is fixed itself and rotor punching by stay-bolt and nut, and compresses magnet steel in the magnet steel groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910148133A CN101645639A (en) | 2009-06-23 | 2009-06-23 | Permanent magnet synchronous motor rotor magnetic steel anti-shedding mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910148133A CN101645639A (en) | 2009-06-23 | 2009-06-23 | Permanent magnet synchronous motor rotor magnetic steel anti-shedding mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101645639A true CN101645639A (en) | 2010-02-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910148133A Pending CN101645639A (en) | 2009-06-23 | 2009-06-23 | Permanent magnet synchronous motor rotor magnetic steel anti-shedding mechanism |
Country Status (1)
| Country | Link |
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| CN (1) | CN101645639A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102738915A (en) * | 2012-07-09 | 2012-10-17 | 福建亚南电机有限公司 | Direct-drive permanent magnetic case-free wind turbine generator device |
| CN103840620A (en) * | 2014-03-21 | 2014-06-04 | 雷勃电气（苏州）有限公司 | Connection structure of permanent magnetic motor rotor |
| CN113141074A (en) * | 2021-04-09 | 2021-07-20 | 浙江零跑科技有限公司 | Rotor structure of permanent magnet synchronous motor and manufacturing method thereof |
-
2009
- 2009-06-23 CN CN200910148133A patent/CN101645639A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102738915A (en) * | 2012-07-09 | 2012-10-17 | 福建亚南电机有限公司 | Direct-drive permanent magnetic case-free wind turbine generator device |
| CN103840620A (en) * | 2014-03-21 | 2014-06-04 | 雷勃电气（苏州）有限公司 | Connection structure of permanent magnetic motor rotor |
| CN113141074A (en) * | 2021-04-09 | 2021-07-20 | 浙江零跑科技有限公司 | Rotor structure of permanent magnet synchronous motor and manufacturing method thereof |
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Application publication date: 20100210 |