CN203632390U - Rare earth permanent magnetic torque motor with assembling type rotor - Google Patents
Rare earth permanent magnetic torque motor with assembling type rotor Download PDFInfo
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- CN203632390U CN203632390U CN201320834838.1U CN201320834838U CN203632390U CN 203632390 U CN203632390 U CN 203632390U CN 201320834838 U CN201320834838 U CN 201320834838U CN 203632390 U CN203632390 U CN 203632390U
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- earth permanent
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Abstract
The utility model provides a rare earth permanent magnetic torque motor with an assembling type rotor. The rare earth permanent magnetic torque motor comprises a stator, a rotor and an end cover, the rotor is formed by a hollow rotor shaft, a double-cylinder non-magnetic-conductive rotor support, magnetic-conductive pole shoes and rare earth magnets, the double-cylinder non-magnetic-conductive rotor support is formed by a structure in which a small cylinder is sleeved by a large cylinder, the magnetic-conductive pole shoes and the rare earth magnets are embedded at the outer rim of the large cylinder of the rotor support with equal intervals, and two ends of the rotor support are respectively provided with an upper end plate and a lower end plate which are made of non-magnetic-conductive materials and are used for fixing the magnets. According to the design, the assembling manufacturability of the motor rotor is better, the weight of the rotor is lighter, the moment of inertia is smaller, the permanent magnetic materials are less, the utilization rate of the permanent magnets is higher, the magnetic leakage is less, the reliability is higher, and permanent demagnetization can be avoided so that the comprehensive performance of the low-speed high-power torque motor is greatly improved.
Description
Technical field
The utility model relates to a kind of rare earth permanent magnet torque motor, especially a kind of rotor of rare earth permanent magnet torque motor.
Background technology
The advantages such as rare earth permanent magnet torque motor is easy, non-maintaining with its energy-efficient, high gravimetric specific power, high overload ability, high reliability, speed governing, long-life cause that domestic and international expert pays much attention to.But the rare earth permanent magnet torque motor of prior art is not also fully excavated potentiality in high-power, large torque application, also have at present that rotor stock utilization is low, the obvious deficiency of the aspect such as Heavy Weight, surface label alinco assembled complex process and poor reliability, this external minimizing leakage field also without more improvement, thereby has limited the development of rare earth permanent magnet torque motor in every field with permanent demagnetization aspect.Such as aspect oil extraction in oil field, the application that is just difficult to realize rare earth permanent magnet torque motor direct and drags large displacement screw pump oil recovery technique.
Utility model content
Problem to be solved in the utility model is improved for above-mentioned weak point.The technical scheme taked is thus: a kind of assembled rotor permanent magnet torque motor, comprise stator, rotor, end cap, the non-magnetic sleeve rotor support of the bitubular that described rotor is made up of the little barrel structure of large jacket casing, magnetic conductive pole piece, hollow rotor shafts and the rectangle rare-earth permanent magnet that equidistantly space is embedded in the large cylinder of rotor field spider outer rim groove form; On the brace rod between the bitubular of rotor field spider, be evenly distributed with several lightening holes, the quantity of lightening hole can not affect under the prerequisite of rotor mechanical performance, adjust according to the specific works character of bearing, if there is no specific (special) requirements, conventionally can equidistantly open 3 kidney-shaped lightening holes; Be separately installed with the upper head plate of being made by non-magnet material and bottom plate for fixing rare-earth permanent magnet at rotor field spider two ends, form thus assembled pole shoe rotor with non-salient poles.Described magnetic conductive pole piece has 24, and this magnetic conductive pole piece end face is T word sector structure, and fan-shaped bottom embeds in the trapezoidal location notch of the large cylinder of rotor field spider outer rim.Described rare-earth permanent magnet is sintered NdFeB tangential rectangular configuration, has 24 and be embedded in respectively in the rectangular aperture slot number cave forming between two adjacent magnetic conductive pole pieces.It is characterized in that: the lightening hole on the brace rod between the bitubular of described rotor field spider is 3, and it is shaped as kidney-shaped and measure-alike.Described rotor field spider, upper head plate and bottom plate are made by aluminum alloy materials.The permeability magnetic material that described magnetic conductive pole piece adopts is electrical pure iron.
Advantage and the good effect that the utlity model has are: because rotor is to design for radial battery mode non salient pole machine characteristic of the magnetic circuit, be with conventional permanent magnet torque motor difference surface label magnetic steel structure and other same specification, magnetic conductive pole piece is to be inlaid on non-magnetic aluminium-alloy rotor support, the ingenious permanent magnet magnetic steel tank that formed of two adjacent magnetic conductive pole pieces, form independent magnetic circuit, the relative like this leakage field that reduced; Permanent magnet adopts tangential rectangle, is divided into vertically some sections and embeds between two magnetic conductive pole pieces, and assembling is better compared with surface label magnetic technique, and permanent magnet utilance is higher, and leakage field is less, has further saved permeability magnetic material, and reliability is also higher; The more important thing is, can avoid permanent demagnetization; The resultant effect that adds rotor field spider and the design of armature spindle loss of weight makes rotor weight lighter, and moment of inertia is less, has improved gravimetric specific power; Because rotor structure is simple, improved fabrication technology, significantly improve structural safety and reliability, and can realize easily the manufacture of multi-polar structure motor.Therefore greatly improved the combination property of the high-power rare earth permanent magnet torque motor of low speed; Especially aspect oil extraction in oil field, pass through technique scheme, polished rod can stretch out direct oil pumping by the hollow shaft of permanent magnet torque motor, and no longer need a series of reducing gears such as belt transmission, thereby make rare earth permanent magnet torque motor direct drag large displacement screw pump oil recovery technique to be achieved, oil extraction process of oil well and equipment are simplified greatly, finally made well recovery efficiency and economic benefit be significantly improved.
Accompanying drawing explanation
Fig. 1 is the utility model electrical axis directional profile structural representation
Fig. 2 is the utility model rotor axis directional profile structural representation
Fig. 3 is the utility model rotor transversal profile structural representation
Fig. 4 is the utility model motor stator punching transversal profile structural representation
In figure: 1, ring 24, rotor field spider screw hole in armature winding 2, stator core 3, upper anti-riot seal cover 4, upper end cover 5, rotor upper end cover 6, support 7, rotor field spider 8, rectangle rare-earth permanent magnet 9, magnetic conductive pole piece 10, rotor bottom plate 11, bolt 12, axle bumper 13, hollow rotor shafts 14, lower anti-riot end cap flange 15, bearing 16, boss 17, end plate through hole 18, kidney-shaped lightening hole 19, large cylinder 20, little cylinder 22, end plate outer shroud 23, end plate
Embodiment
Below in conjunction with accompanying drawing, specific embodiment of the utility model is elaborated.
The utility model embodiment is a straight drive torque motor of vertical single screw oil well pump assembled rotor rare earth permanent magnet high efficiency/high power density.Motor stator, rotor, upper end cover 4, upper explosive-proof sealed lid 3, lower explosion-proof end cover flange 14 that the formation of this motor comprises support 6, is made up of stator core 2 and armature winding 1.Described rotor by hollow shaft 13, adopt the rotor upper head plate 5 of being cast by non-magnetic aluminum alloy materials at non-magnetic aluminium alloy double-cylinder type rotor field spider 7 that the little barrel structure of large jacket casing forms, rotor field spider 7 two ends and rotor bottom plate 10 and in large cylinder 19 spaces, outer rim place of rotor field spider 7 and 9 and 24 rectangle rare-earth permanent magnets 8 of 24 magnetic conductive pole pieces of equidistantly installing form.Whole rotor field spider 7 is "working"-shaped along axis direction section.In addition, the permeability magnetic material that described magnetic conductive pole piece 9 adopts is electrical pure iron, No. 10 steel or is built up by 0.5mm silicon steel material, the end face of magnetic conductive pole piece 9 is T word sector structure, magnetic conductive pole piece 9 arc top angles are 22.5 degree, sector-shaped bottom is risen 29.5mm to arc, fan-shaped bottom width 25.7mm, and segment angle is 15 degree, wherein 24 fan-shaped magnetic conductive pole pieces 9 are embedded in the rear arc radius jointly forming of rotor field spider 7 and have formed the radius of rotor, and fan-shaped bottom embeds in the trapezoidal location notch of rotor field spider 7.Magnetic conductive pole piece 9 embeds after rotor field spider 7, has just formed 24 for assembling the rectangular aperture slot number cave of rectangle rare-earth permanent magnet 8 with the outer ring surface of rotor field spider 7.Material is that the rectangle permanent magnet 8 of sintered NdFeB is divided into some sections vertically, embeds in rectangular aperture slot number cave.In order to prevent that rectangle permanent magnet 8 from jumping, strengthening mechanical strength vertically at rotor field spider 7 two ends installation rotor upper head plates 5 and rotor bottom plate 10; These two end plate outer shroud 22 diameters are all slightly less than root diameter φ, in two end plates, the outer surface 23 of ring coordinates with the large cylinder 19 interior rings of rotor field spider 7, radially equally distributed 24 end plate through holes 17 are corresponding with 24 screw holes 24 on rotor field spider 7 separately for the end face of upper head plate 5 and bottom plate 10, then pass corresponding end plate through hole 17 and screw hole 24 by bolt 11, thereby rotor field spider 7 and upper and lower two end plates are fixed together.Little cylinder 22 both sides in rotor field spider 7 are respectively equipped with one to rotor field spider location and fixing axle bumper ring 12, finally form an assembled pole shoe rotor with non-salient poles entirety.In addition, the brace rod equal intervals between rotor field spider 7 bitubulars is distributed with 3 measure-alike kidney-shaped lightening holes 18, and little cylinder 22 interior rings have symmetrical key to connect with hollow rotor shafts 13, to keep rotor field spider 7 fixing with hollow rotor shafts 13; Large cylinder cylindrical 19 side adjacent with rotor bottom plate 10 is uniformly distributed 24 boss 16, plays a part rectangle permanent magnet 8 to locate.
Motor stator iron core 2 is to be that the stator punching that 0.5mm silicon steel material is made is overrided to form by some thickness, is uniform-distribution with 72 pyriform line embedding grooves on stator punching, and adjacent slot elongation is 5 degree.While laminating, by along the circumferential direction spiral skew gradually of stator punching, make pyriform line embedding groove two-port become 5 degree slot-pitch angles.Stator punching, support, end cap etc. adopt national standard y series motor standard component, save exploitation and manufacturing cost.Armature winding 1, for three-phase star connects symmetric winding, is embedded in the line embedding groove of stator iron core 2.Structural design adopts flame proof design, is convenient to the straight drive system in single screw pump ground and the application of other hazardous areas.The present embodiment is suitable for land or the direct drive screw pump power driving device of offshore oil production, or is applied to the fields such as the chemical liquid conveying of operational hazards, maintenance difficult.
Above embodiment of the present utility model is had been described in detail, but described content is only preferred embodiment of the present utility model, can not be considered to for limiting practical range of the present utility model.All equalization variation and improvement etc. of doing according to the utility model scope, within all should still belonging to this patent covering scope.
Claims (6)
1. an assembled rotor rare earth permanent magnet torque motor, comprise stator, rotor, end cap, it is characterized in that: the non-magnetic sleeve rotor support of the bitubular that described rotor is made up of hollow rotor shafts, the large little barrel structure of jacket casing, magnetic conductive pole piece and the rare-earth permanent magnet that equidistantly space is embedded in the large cylinder of rotor field spider outer rim groove form; Wherein on the brace rod between the bitubular of rotor field spider, be evenly distributed with several lightening holes, be separately installed with upper head plate and bottom plate that non-magnet material is made at rotor field spider two ends.
2. assembled rotor rare earth permanent magnet torque motor according to claim 1, is characterized in that: described magnetic conductive pole piece has 24, and this magnetic conductive pole piece end face is T word sector structure, and fan-shaped bottom embeds in the trapezoidal location notch of the large cylinder of rotor field spider outer rim.
3. assembled rotor rare earth permanent magnet torque motor according to claim 1, it is characterized in that: described rare-earth permanent magnet is sintered NdFeB tangential rectangular configuration, have 24 and be embedded in respectively in the rectangular aperture slot number cave forming between two adjacent magnetic conductive pole pieces.
4. assembled rotor rare earth permanent magnet torque motor according to claim 1, is characterized in that: the lightening hole on the brace rod between the bitubular of described rotor field spider is 3, and it is shaped as kidney-shaped and measure-alike.
5. assembled rotor rare earth permanent magnet torque motor according to claim 1, is characterized in that: described rotor field spider, upper head plate and bottom plate are made by aluminum alloy materials.
6. assembled rotor rare earth permanent magnet torque motor according to claim 1, is characterized in that: the permeability magnetic material that described magnetic conductive pole piece adopts is electrical pure iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320834838.1U CN203632390U (en) | 2013-12-13 | 2013-12-13 | Rare earth permanent magnetic torque motor with assembling type rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320834838.1U CN203632390U (en) | 2013-12-13 | 2013-12-13 | Rare earth permanent magnetic torque motor with assembling type rotor |
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| Publication Number | Publication Date |
|---|---|
| CN203632390U true CN203632390U (en) | 2014-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320834838.1U Expired - Fee Related CN203632390U (en) | 2013-12-13 | 2013-12-13 | Rare earth permanent magnetic torque motor with assembling type rotor |
Country Status (1)
| Country | Link |
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| CN (1) | CN203632390U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103647363A (en) * | 2013-12-13 | 2014-03-19 | 天津瑞德科技发展有限公司 | Fabricated rotor rare-earth permanent magnet torque motor |
| CN107317417A (en) * | 2017-08-29 | 2017-11-03 | 中车株洲电机有限公司 | A kind of magneto and its rotor core |
| CN107910967A (en) * | 2017-12-21 | 2018-04-13 | 中车株洲电机有限公司 | A kind of rotor core axial fixing structure and riveting device |
| CN109638999A (en) * | 2018-12-07 | 2019-04-16 | 中车永济电机有限公司 | A kind of low-loss, hollow shaft radiator structure p-m rotor |
| CN111566901A (en) * | 2018-01-11 | 2020-08-21 | Abb瑞士股份有限公司 | Electric machine |
-
2013
- 2013-12-13 CN CN201320834838.1U patent/CN203632390U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103647363A (en) * | 2013-12-13 | 2014-03-19 | 天津瑞德科技发展有限公司 | Fabricated rotor rare-earth permanent magnet torque motor |
| CN107317417A (en) * | 2017-08-29 | 2017-11-03 | 中车株洲电机有限公司 | A kind of magneto and its rotor core |
| CN107910967A (en) * | 2017-12-21 | 2018-04-13 | 中车株洲电机有限公司 | A kind of rotor core axial fixing structure and riveting device |
| CN111566901A (en) * | 2018-01-11 | 2020-08-21 | Abb瑞士股份有限公司 | Electric machine |
| CN109638999A (en) * | 2018-12-07 | 2019-04-16 | 中车永济电机有限公司 | A kind of low-loss, hollow shaft radiator structure p-m rotor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 Termination date: 20141213 |
|
| EXPY | Termination of patent right or utility model |