CN209150903U - A kind of kinetic pressure air-float bearing of inner hysteresis machine - Google Patents
A kind of kinetic pressure air-float bearing of inner hysteresis machine Download PDFInfo
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- CN209150903U CN209150903U CN201821521336.2U CN201821521336U CN209150903U CN 209150903 U CN209150903 U CN 209150903U CN 201821521336 U CN201821521336 U CN 201821521336U CN 209150903 U CN209150903 U CN 209150903U
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Abstract
The utility model discloses a kind of kinetic pressure air-float bearing of inner hysteresis machines, including stator (1), bearing block (2) are fixed in the stator (1), rotor (3) are arranged on the bearing block (2), semi-spherical grooves (4) are respectively equipped at described bearing block (2) both ends, it is a in each semi-spherical grooves (4) to be equipped with air-bearing (5), shaft (6) are equipped in bearing block (2) axis, the shaft (6) runs through the air-bearing (5) of two sides, sleeve (7) are arranged in the shaft (6), described sleeve (7) both ends are acted against respectively on the air-bearing (5) of two sides, the rotor (3) is set on shaft (6), the rotor (3), air-bearing (5), sleeve (7) is compressed by shaft (6) both ends and is connected Together.
Description
Technical field
The utility model relates to the designs of hysteresis machine, more particularly to flexure gyroscope kinetic pressure air-float bearing of inner magnetic hysteresis electricity
The design field of machine.
Background technique
Flexure gyroscope has the advantages that simple structure, degree of precision, small in size, at low cost, process and assemble are easy, usually
It is internal using conventional ball bearings formula hysteresis machine, but it does not have the satellite gyro long-life, the application of high reliability needs
It asks, limits it in the application of field of satellite navigation.Kinetic pressure air-float bearing of inner hysteresis machine is introduced, mechanical friction can be reduced, made
Gyro long-life, high reliability are achieved, and are provided simultaneously with degree of precision, sensitive axis, the advantages of cost is relatively low, are made it in star
It carries in gyroscope field and possesses higher competitiveness.
Kinetic pressure air-float bearing of inner hysteresis machine has two kinds of external-rotor-type, an inner-rotor-type by structure differentiation, wherein air-bearing
Structure mainly has hemispherical, spherical shape, cylindricality, taper etc., and spherical shape, pyramidal structure are relative complex, and processing difficulties are not easy to realize, and half
Spherical shape is compared with column type air-bearing, and in a non-operative state, the contact area between bearing hemisphere and ball bowl is very small for motor,
Theoretically point contact is not in lapping-in phenomenon, motor is caused to be unable to normal starting；Under working condition, hemisphere bearing axial direction,
Radial air film dynamic stiffness is equal, and rotor centroid deviates smaller, gyroscope instrument stable accuracy, and existing air-bearing motor pair
Gap adjustment between air-bearing and bearing block is relatively difficult.
Utility model content
In order to solve deficiency in the prior art, provide that a kind of structure is simple, and physical life is long, bearing clearance is easy to adjust
Air-bearing motor, the technical scheme adopted by the utility model is
A kind of kinetic pressure air-float bearing of inner hysteresis machine, including stator are fixed with bearing block in the stator, in the axis
It holds and is arranged with rotor on seat, be respectively equipped with semi-spherical grooves at the bearing block both ends, it is a in each semi-spherical grooves to set
There is air-bearing, be equipped with shaft in the bearing block axis, the shaft runs through the air-bearing of two sides, turns in described
Sleeve is arranged on axis, the sleeve both ends are acted against respectively on the air-bearing of two sides, and the rotor is set in shaft
On, the rotor, air-bearing, sleeve are fixed together by both ends of the shaft compression.
The air-bearing it is opposite with bearing block be etched with helicla flute, the helicla flute of the air-bearing at both ends on one side
It is oppositely oriented.
The stator includes iron core, and the iron core material is fe-Ni soft magnetic alloy, the bearing block and air-bearing shafts
Corbel matter is steel bonded carbide, and the rotor material is Ⅴ-permandur alloy.
Described shaft one end is equipped with the baffle other end and is equipped with thread segment, is threaded with spiral shell on the thread segment
Mother, the nut and baffle, which cooperate, is connected in rotor, air-bearing, sleeve compression in shaft, covers in the shaft
If sleeved one section is equipped with a pair of of annular groove.
There is diamond-like carbon film-coating on each the air-bearing surface and semi-spherical grooves inner wall.
It is simple using the air-bearing electric machine structure of above structure, make the practical longevity due to changing traditional roller bearing structure
Life is grown, and the gap between air-bearing and semi-spherical grooves is adjusted by sleeve, and air-bearing passes through sleeve reality in the structure
Existing axially adjustable, easy to adjust and save the cost, does not need to process bearing again, while sleeve can prevent shaft
Abrasion.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is the utility model rotor structure schematic diagram；
Fig. 3 is bearing block structure schematic diagram；
Fig. 4 is air-bearing structural schematic diagram.
Specific embodiment
Air-bearing motor as shown in Figure 1 includes stator 1 and rotor 3, and rotor 3 is placed in stator 1 in inner rotor core
Motor, the also bearing block 2 being fixedly connected with stator 1, is equipped with semi-spherical grooves 4 at 2 both ends of bearing block as shown in Figure 3, fifty-fifty
Air-bearing 5 is equipped in spherical groove 4, there are also the shaft 6 for running through 2 axis of bearing block in bearing block 2, each air-bearing 5 is set
It is in shaft 6 and coaxial with shaft 6, sleeve 7 is arranged in shaft 6, sleeve 7 is placed between two air-bearings 5, the sleeve
7 for adjusting the fit-up gap between air-bearing 5 and semi-spherical grooves 4, adjusts air-bearing shafts by grinding adjustment 7 length of sleeve
The gap between 5 and semi-spherical grooves 4 is held, reaches best assembly effect to reach two sides air-bearing 5 and semi-spherical grooves 4, compares
Best assembly effect is realized to air-bearing 5 or to the processing of shaft, using sleeve more highly effective, and save the cost.
Rotor 3 is also set in shaft 6, and rotor 3, air-bearing 5, the compression of sleeve 7 are fixed together by 6 both ends of shaft, thus
Shaft 6, air-bearing 5 and sleeve 7 is driven to rotate synchronously when rotor 3 rotates.Shaft one end sets baffle 6-1 in the present embodiment,
The other end sets thread segment 6-2, and nut 8 is threaded on thread segment 6-2, passes through nut 8 and baffle 6-1 after tightening nut 8
Rotor 3, air-bearing 5, the compression of sleeve 7 are fixed together.
One section that sleeve 7 is arranged in shaft 6 is equipped with a pair of of annular groove 6-3, and annular groove 6-3 symmetrically facilitates the installation of sleeve 7 to adjust
Whole, sleeve 7 can also prevent shaft 6 and bearing block 2 from rubbing in rotation, improve service life.
There are helicla flute 5-1, and the helicla flute 5-1 rotation of two sides air-bearing 5 in 5 surface etch of air-bearing as shown in Figure 4
To on the contrary, guaranteeing that hemisphere can float.Gas is pumped into air film automatically by helicla flute 5-1 when work, rub pair at this time
Between state be divided into two kinds, one is gas lubrications, are separated two rubbing surfaces using viscous gas, by air-bearing 5 and half
The geometry of spherical groove 4 and relative motion support load；Another kind is boundary lubrication friction, 5 surface of air-bearing and half
4 inner wall diamond-like carbon film-coating DLC of spherical groove, in shutdown process, film layer plays lubricating action, prevents friction surface from adhering,
Reduce coefficient of friction.Bearing block 2 and 5 material of air-bearing are steel bonded carbide (GT35), the helicla flute on each air-bearing 5
5-1 is equipped with eight.
3 material of rotor shown in Fig. 2 is Ⅴ-permandur alloy (2J04Y), has specific hysteresis losses big after heat treatment, magnetizes magnetic
The advantages that field intensity is small, and power transfer rate is high.
Stator is made of iron core 1-1 and winding, iron core 1-1 totally 24 slot, using high magnetic permeability fe-Ni soft magnetic alloy (1J50),
To reduce magnetic hystersis loss and magnetizing current, increase power factor, winding takes three-phase star winding structure, and three-phase windings are in space
120 ° are differed on position each other, eliminates 3 subharmonic of rotating excitation field, using the short distance winding of pitch 5/6, weaken 5 times it is humorous
Wave, is conducive to motor stabilizing operating, and winding surface uses insulated paint encapsulating, fifth wheel is avoided to enter inside motor.
Claims (5)
1. a kind of kinetic pressure air-float bearing of inner hysteresis machine, including stator (1) are fixed with bearing block (2) in the stator (1),
It is characterized in that: being arranged with rotor (3) on the bearing block (2), be respectively equipped with hemispherical at described bearing block (2) both ends
Slot (4), it is a in each semi-spherical grooves (4) to be equipped with air-bearing (5), shaft is equipped in bearing block (2) axis
(6), the shaft (6) runs through the air-bearing (5) of two sides, is arranged with sleeve (7) in the shaft (6), described
Sleeve (7) both ends are acted against respectively on the air-bearing (5) of two sides, and the rotor (3) is set on shaft (6), described
Rotor (3), air-bearing (5), sleeve (7) are compressed by shaft (6) both ends and are fixed together.
2. a kind of kinetic pressure air-float bearing of inner hysteresis machine according to claim 1, it is characterised in that: in the air-bearing
(5) with bearing block (2) are opposite is etched on one side helicla flute (5-1), helicla flute (5-1) rotation direction of the air-bearing (5) at both ends
On the contrary.
3. a kind of kinetic pressure air-float bearing of inner hysteresis machine according to claim 1 or 2, it is characterised in that: the stator (1)
Including iron core (1-1), the iron core (1-1) material is fe-Ni soft magnetic alloy, the bearing block (2) and air-bearing (5)
Material is steel bonded carbide, and the rotor (3) material is Ⅴ-permandur alloy.
4. a kind of kinetic pressure air-float bearing of inner hysteresis machine according to claim 1, it is characterised in that: the shaft (6) one
End is equipped with baffle (6-1) other end and is equipped with thread segment (6-2), is threaded with nut (8) on the thread segment (6-2),
The nut (8) and baffle (6-1), which cooperates, is connected in rotor (3), air-bearing (5), sleeve (7) compression on shaft (6),
One section that sleeve (7) is arranged in the shaft (6) is equipped with a pair of of annular groove (6-3).
5. a kind of kinetic pressure air-float bearing of inner hysteresis machine according to claim 1, it is characterised in that: in each air-bearing shafts
Holding (5) surface and semi-spherical grooves (4) inner wall has diamond-like carbon film-coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821521336.2U CN209150903U (en) | 2018-09-18 | 2018-09-18 | A kind of kinetic pressure air-float bearing of inner hysteresis machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821521336.2U CN209150903U (en) | 2018-09-18 | 2018-09-18 | A kind of kinetic pressure air-float bearing of inner hysteresis machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209150903U true CN209150903U (en) | 2019-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821521336.2U Active CN209150903U (en) | 2018-09-18 | 2018-09-18 | A kind of kinetic pressure air-float bearing of inner hysteresis machine |
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| CN (1) | CN209150903U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110492638A (en) * | 2019-08-28 | 2019-11-22 | 河北科技大学 | Multi-freedom electric motor |
-
2018
- 2018-09-18 CN CN201821521336.2U patent/CN209150903U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110492638A (en) * | 2019-08-28 | 2019-11-22 | 河北科技大学 | Multi-freedom electric motor |
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