CN102938599A - Permanent magnet gyro motor with double stators and through-hole bearing - Google Patents
Permanent magnet gyro motor with double stators and through-hole bearing Download PDFInfo
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- CN102938599A CN102938599A CN2012104759360A CN201210475936A CN102938599A CN 102938599 A CN102938599 A CN 102938599A CN 2012104759360 A CN2012104759360 A CN 2012104759360A CN 201210475936 A CN201210475936 A CN 201210475936A CN 102938599 A CN102938599 A CN 102938599A
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Abstract
The invention relates to a permanent magnet gyro motor with double stators and a through-hole bearing. The permanent magnet gyro motor comprises the stators, a rotor, two thrust plates and a shaft, wherein the shaft is coaxially sleeved in a bearing hole of a rotor bearing cover; the two thrust plates are respectively arranged at the left and right ends of the shaft according to a working manner of a hydrodynamic gas-lubricated bearing, and are fixed by inner nuts; the left end and the right end of the rotor are respectively provided with a stator; and the two stators are fixed on a shaft by outer nuts. The permanent magnet gyro motor is scientific in design, and reasonable in structure. According to the technology, the aim that the three-phase permanent magnet gyro motor (with the double stators and the through-hole type hydrodynamic gas-lubricated bearing) of a position-free sensor is applied in the field of gyros can be realized, so that the precision of the gyro and an inertial navigation system can be obviously improved, and the permanent magnet gyro motor is advanced in technology, and fills the technology blank in China.
Description
Technical field
The present invention relates to the gyroscope field, especially a kind of pair of stator through hole bearing three-phase permanent gyro machine.
Background technology
Traditional permanent magnet gyro motor adopts external rotor, single stator, Split type bearing arrangement.Rotor places the stator outside, to satisfy the required moment of momentum of gyroscope.Stator connects firmly with axle at internal rotor.Settle permanent magnetic steel on the rotor, settle winding coil on the stator.Stator winding passes to three-phase current and forms stator armature magnetic field, with rotor permanent magnet magnet steel magnetic field interaction, produces turning moment, makes the motor rotation and reaches synchronous regime.Mainly there is following defective in existing this traditional permanent magnet gyro motor: 1, stator adopts devitrified glass ceramics processing, coil directly sticks on the devitrified glass ceramics stator frame, then cooperates, glueds joint sealing with the outer cover that is equally ceramic material of microcrystalline glass processing.Because devitrified glass ceramics material hole is large, clean difficulty, therefore seriously polluted to hydrodynamic gas-lubricated bearing, easily cause hydrodynamic gas-lubricated bearing to lose efficacy.
2, rotor is comprised of two bearing caps, rotor ring, magnet steel and shading rings.At first, magnet steel and shading ring are installed on the rotor, form rotor assembly, and then two bearing caps place respectively the rotor assembly both sides, by seam and screw location, are connected with rotor assembly, obtain rotor.Bearing is the Split type structure, the diplopore journal bearing.Two bearings is placed on two bearing caps, and dead eye and axle consist of journal bearing, bearing cap end face and thrust plate formation thrust bearing.Bearing cap and rotor are located with seam and screw, after the long-time use change in location is arranged, vibration is arranged, and concentricity is difficult to guarantee that processing, grinding, assembling complexity change during mounting or dismounting easily, and be large on the unbalancing value impact, causes accuracy of instrument to change.
3, because rotor and bearing parts are not commaterials, and its coefficient of linear expansion is inconsistent, and influence of thermal deformation is large, easily cause bearing axial clearance to change, cause bearing performance variation even bearing failure.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of simple and reliable for structure, processing, assembling are easy, and bearing accuracy, performance are easy to guarantee, two stator through hole bearing permanent magnet gyro motors that the motor reliability is high.This motor adopts through hole bearing, two stator motor to solve bearing and is subjected to stator pollution and bearing clearance variation issue.
The present invention solves its technical problem and is achieved through the following technical solutions:
A kind of pair of stator through hole bearing permanent magnet gyro motor, comprise stator, rotor, thrust plate and axle, it is characterized in that: the axle coaxial package is in the dead eye of armature spindle bearing sleeve, two thrust plates are installed in respectively the two ends, the left and right sides of axle by the working method of hydrodynamic gas-lubricated bearing, and fix with inner nut, a stator is installed respectively at the two ends, the left and right sides of rotor, and these two stators are fixed on the axle with outer nut.
And, described rotor is made of bearing holder (housing, cover), magnet steel, rotor ring and magnetic guiding loop, the axle center of bearing holder (housing, cover) is coaxial makes a dead eye, bearing holder (housing, cover) is coaxial to be installed in the rotor ring, the left and right sides symmetry of rotor ring is made two annular mounting groove, equal magnet steel of an annular of coaxial installation in each annular mounting groove is all installed a magnetic guiding loop between the outer wall of each magnet steel and the rotor ring, equal coaxial stator that clamps an annular between the inwall of each magnet steel and the rotor ring.
And described magnet steel is permanent magnetic multi-pole integral loop magnet steel.
And described two stators connect by line electricity, and the outer end of these two stators is packed in respectively on separately the bracing frame, and this bracing frame is fixed on the axle with outer nut.
And, described stator is the iron-core-free structure, the outer end of stator is installed on the ceramic skeleton, stator winding coil sticks on the ceramic skeleton, through modes such as integer, dress mould, vacuum glue pouring, curing, the demouldings winding is sealed, stator winding adopts three-phase Y-connection mode, about load onto respectively the winding of the independent three-phase of a cover on two stators, adopt special-purpose control module, conduction mode is two six states that are conducted.
Advantage of the present invention and beneficial effect are:
1, the stator of this motor is the iron-core-free structure, selects the good pottery of compactness as the skeleton backing material, and stator winding coil sticks on the ceramic skeleton, through modes such as integer, dress mould, vacuum glue pouring, curing, the demouldings winding is sealed.This processing method can guarantee smooth, the easy cleaning of stator surface, can reduce the pollution to bearing, the useful life of prolongation bearing.
2, because stator is the iron-core-free structure, therefore there is not iron loss during machine operation, can reduce motor power consumption, and can increase the machine operation air gap flux density by improving the magnet steel performance, can reduce the motor umber of turn, increase simultaneously winding wire diameter, can effectively reduce resistance, reduce copper loss, improve electric efficiency.
3, the magnet steel of this motor adopts permanent magnetic multi-pole integral loop magnet steel, and its symmetry is good, can eliminate the unsettled defective of multi-pole ring barycenter that the polylith magnet steel forms, and the rotor global level is high.Rotor ring and magnetic guiding loop all select the coefficient of expansion and magnet steel near material simultaneously, make magnet steel, magnetic guiding loop and rotor ring consist of a rigid body, guarantee the stability of rotor centroid.
4, the mounting means of the bearing holder (housing, cover) of this rotor, magnet steel, rotor ring and magnetic guiding loop all adopts the radial fit mode, without seam cooperation, screw location, so that rotor structure rigidity is large, good stability, the two bearings hole is replaced by a through hole in the through hole bearing arrangement in the Split type bearing arrangement, add and guarantee easily concentricity man-hour, bearing parameter is unaffected during mounting or dismounting, has improved the consistency of axis of angular momentum and motor drive shaft; The bearing machining consistent size is good, after rotation is got up, bearing deformation will be much smaller than the Split type structure, under Static and dynamic, the bearing clearance can guarantee constant, so the axial rigidity of bearing is guaranteed easily, and Flexibility Difference is little to have reduced gyrostatic unequal rigidity, can effectively reduce gyroscope and acceleration square relevant coefficient of deviation, thus Effective Raise gyro anti-vibration ability.
5, the present invention is a kind of design science, two stator through hole bearing permanent magnet gyro motors rational in infrastructure, the design has realized that two stator through hole type hydrodynamic gas-lubricated bearing three-phase motor with permanent magnets of position-sensor-free are in the application in gyroscope field, the precision of gyroscope and inertial navigation system all is significantly improved, its advanced technology, has filled up the blank of China at technique.
Description of drawings
Fig. 1 is the schematic diagram that partly cuts open of the present invention;
Fig. 2 be rotor partly cut open schematic diagram;
Fig. 3 be bearing partly cut open schematic diagram;
Fig. 4 is frame principle figure.
Embodiment
The invention will be further described below by specific embodiment, and following examples are descriptive, is not determinate, can not limit protection scope of the present invention with this.
A kind of pair of stator through hole bearing permanent magnet gyro motor comprises stator 2, rotor 1, thrust plate 3 and axle 4.Innovative point of the present invention is: rotor is made of bearing holder (housing, cover) 7, magnet steel 8, rotor ring 9 and magnetic guiding loop 10, bearing holder (housing, cover) is coaxial to be installed in the rotor ring, the left and right sides symmetry of rotor ring is made two annular mounting groove, equal magnet steel of an annular of coaxial installation in each annular mounting groove, this magnet steel is permanent magnetic multi-pole integral loop magnet steel, a magnetic guiding loop all is installed between the outer wall of each magnet steel and the rotor ring, rotor ring and magnetic guiding loop all select the coefficient of expansion and magnet steel near material, make magnet steel, magnetic guiding loop and rotor ring consist of a rigid body, guarantee the stability of rotor centroid.Equal coaxial stator that clamps an annular between the inwall of each magnet steel and the rotor ring, these two stators connect by line electricity.The outer end of two stators is packed in respectively on separately the bracing frame 11, and bracing frame is generally metal frame, and this bracing frame is fixed on the axle with outer nut 6.
Stator is the iron-core-free structure, stator is installed on the ceramic skeleton, stator winding coil sticks on the ceramic skeleton, through modes such as integer, dress mould, vacuum glue pouring, curing, the demouldings winding is sealed, stator winding adopts three-phase Y-connection mode, considers electric machine structure vertically and symmetry radially, about load onto respectively the winding of the independent three-phase of a cover on two stators, adopt special-purpose control module, conduction mode is two six states that are conducted.On two stators independently three phase windings observe the rule of three phase electric machine winding.
Bearing is through hole type hydrodynamic gas-lubricated bearing (as shown in Figure 3), the axle center of bearing holder (housing, cover) is coaxial makes an axial dead eye, the axle coaxial package is in this dead eye, bearing holder (housing, cover) endoporus and axle consist of journal bearing, two thrust plates are installed in respectively the two ends, the left and right sides of axle by the working method of hydrodynamic gas-lubricated bearing, and fixing with inner nut 5, bearing holder (housing, cover) both ends of the surface and thrust plate consist of thrust bearing, and bearing holder (housing, cover), axle and thrust plate are same material.
Rotor provides gyroscope the required moment of momentum, forms journal bearing, forms thrust bearing with thrust plate with axle simultaneously, realizes radial support and the axial support of hydrodynamic gas-lubricated bearing; Stator passes to the electric current of certain sequential by control mode, produces stator armature magnetic field, with the rotor permanent magnet magnetic field interaction, produces the required moment of motor rotation; Inner nut, outer nut tighten up respectively thrust plate and stator.
Motor adopts the back EMF control technology, utilize the zero crossing of back-emf signal of motor self as the positional information of rotor, conducting and the shutoff of the power tube that control circuit links to each other with armature winding take this signal as foundation control, thereby the power supply order of control armature winding, make stator winding produce rotating magnetic field, drag rotor, control principle drawing is seen Fig. 4.Adopt the back EMF control mode to realize the reliably working of motor.
Claims (5)
1. two stator through hole bearing permanent magnet gyro motor, comprise stator, rotor, thrust plate and axle, it is characterized in that: the axle coaxial package is in the dead eye of armature spindle bearing sleeve, two thrust plates are installed in respectively the two ends, the left and right sides of axle by the working method of hydrodynamic gas-lubricated bearing, and fix with inner nut, a stator is installed respectively at the two ends, the left and right sides of rotor, and these two stators are fixed on the axle with outer nut.
2. according to claim 1 pair of stator through hole bearing permanent magnet gyro motor, it is characterized in that: described rotor is made of bearing holder (housing, cover), magnet steel, rotor ring and magnetic guiding loop, the axle center of bearing holder (housing, cover) is coaxial makes a dead eye, bearing holder (housing, cover) is coaxial to be installed in the rotor ring, the left and right sides symmetry of rotor ring is made two annular mounting groove, equal magnet steel of an annular of coaxial installation in each annular mounting groove, a magnetic guiding loop all is installed, equal coaxial stator that clamps an annular between the inwall of each magnet steel and the rotor ring between the outer wall of each magnet steel and the rotor ring.
3. according to claim 2 pair of stator through hole bearing permanent magnet gyro motor, it is characterized in that: described magnet steel is permanent magnetic multi-pole integral loop magnet steel.
4. according to claim 1 pair of stator through hole bearing permanent magnet gyro motor, it is characterized in that: described two stators connect by line electricity, and the outer end of these two stators is packed in respectively on separately the bracing frame, and this bracing frame is fixed on the axle with outer nut.
5. according to claim 1 or 4 described pairs of stator through hole bearing permanent magnet gyro motors, it is characterized in that: described stator is the iron-core-free structure, the outer end of stator is installed on the ceramic skeleton, stator winding coil sticks on the ceramic skeleton, through modes such as integer, dress mould, vacuum glue pouring, curing, the demouldings winding is sealed, stator winding adopts three-phase Y-connection mode, about load onto respectively the winding of the independent three-phase of a cover on two stators, adopt special-purpose control module, conduction mode is two six states that are conducted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210475936.0A CN102938599B (en) | 2012-11-21 | 2012-11-21 | A kind of bimorph transducer through hole bearing permanent magnet gyro motor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210475936.0A CN102938599B (en) | 2012-11-21 | 2012-11-21 | A kind of bimorph transducer through hole bearing permanent magnet gyro motor |
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| CN102938599A true CN102938599A (en) | 2013-02-20 |
| CN102938599B CN102938599B (en) | 2016-04-27 |
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| CN201210475936.0A Active CN102938599B (en) | 2012-11-21 | 2012-11-21 | A kind of bimorph transducer through hole bearing permanent magnet gyro motor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103595205A (en) * | 2013-10-28 | 2014-02-19 | 中国船舶重工集团公司第七0七研究所 | Dual-motor dragging integral hemisphere bearing gyro machine |
| CN112366844A (en) * | 2020-11-06 | 2021-02-12 | 中国船舶重工集团公司第七0七研究所 | Gyro motor capable of increasing starting torque through new nut positioning structure |
| CN112366891A (en) * | 2020-11-06 | 2021-02-12 | 中国船舶重工集团公司第七0七研究所 | Motor structure for liquid floated gyroscope |
| CN113555998A (en) * | 2021-07-29 | 2021-10-26 | 中国船舶重工集团公司第七0七研究所 | Dynamic pressure air-bearing structure with pollution filtering device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109302026A (en) * | 2018-10-30 | 2019-02-01 | 中国船舶重工集团公司第七0七研究所 | A kind of bicyclic set magnet permanent motor of diametrical magnetization |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003092867A (en) * | 2001-09-20 | 2003-03-28 | Seiko Instruments Inc | Dynamic pressure bearing spindle motor |
| CN102506840A (en) * | 2011-09-26 | 2012-06-20 | 中国船舶重工集团公司第七0七研究所 | Dynamically tuned gyroscope of high-precision hemispherical dynamic pressure motor |
| CN203014621U (en) * | 2012-11-21 | 2013-06-19 | 中国船舶重工集团公司第七0七研究所 | Double stator through hole bearing permanent magnet gyro motor |
-
2012
- 2012-11-21 CN CN201210475936.0A patent/CN102938599B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003092867A (en) * | 2001-09-20 | 2003-03-28 | Seiko Instruments Inc | Dynamic pressure bearing spindle motor |
| CN102506840A (en) * | 2011-09-26 | 2012-06-20 | 中国船舶重工集团公司第七0七研究所 | Dynamically tuned gyroscope of high-precision hemispherical dynamic pressure motor |
| CN203014621U (en) * | 2012-11-21 | 2013-06-19 | 中国船舶重工集团公司第七0七研究所 | Double stator through hole bearing permanent magnet gyro motor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103595205A (en) * | 2013-10-28 | 2014-02-19 | 中国船舶重工集团公司第七0七研究所 | Dual-motor dragging integral hemisphere bearing gyro machine |
| CN112366844A (en) * | 2020-11-06 | 2021-02-12 | 中国船舶重工集团公司第七0七研究所 | Gyro motor capable of increasing starting torque through new nut positioning structure |
| CN112366891A (en) * | 2020-11-06 | 2021-02-12 | 中国船舶重工集团公司第七0七研究所 | Motor structure for liquid floated gyroscope |
| CN113555998A (en) * | 2021-07-29 | 2021-10-26 | 中国船舶重工集团公司第七0七研究所 | Dynamic pressure air-bearing structure with pollution filtering device |
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| CN102938599B (en) | 2016-04-27 |
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Inventor after: Chen Jinlai Inventor after: Li Decai Inventor after: Yang Fengying Inventor after: Zhao Xiaoming Inventor after: Qi Guohua Inventor after: Guo Deqing Inventor before: Chen Jinlai Inventor before: Li Decai Inventor before: Yang Fengying Inventor before: Qi Guohua Inventor before: Guo Deqing |