CN107317455A - A kind of big L/D ratio magnetic axis structure of axial linear motor - Google Patents
A kind of big L/D ratio magnetic axis structure of axial linear motor Download PDFInfo
- Publication number
- CN107317455A CN107317455A CN201710568242.4A CN201710568242A CN107317455A CN 107317455 A CN107317455 A CN 107317455A CN 201710568242 A CN201710568242 A CN 201710568242A CN 107317455 A CN107317455 A CN 107317455A
- Authority
- CN
- China
- Prior art keywords
- hollow shaft
- magnetic
- magnetic shoe
- linear motor
- cross
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Linear Motors (AREA)
Abstract
The invention discloses a kind of big L/D ratio magnetic axis structure of axial linear motor, including cross hollow shaft, fan-shaped radial direction magnetic shoe, sleeve pipe and end cap, the cross hollow shaft is above and below hollow circular shaft outer peripheral face, symmetrical raised axial rib structure, the fan-shaped radial direction magnetic shoe of cross hollow shaft outer peripheral face axially spaced-apart connection, each section on the axle side face that four pieces of fan-shaped radial direction magnetic shoe inner arc walls are connected between rib two-by-two, adjacent segment magnetic shoe is different level magnetic shoe, cross hollow shaft and fan-shaped radial direction magnetic shoe are linked into an integrated entity and are sleeved in sleeve pipe, and two ends are engaged using end cap and fixed.The present invention uses a kind of cross hollow shaft of section as the support of magnet steel, to resist the gravity sag of magnet steel axle；Using the magnet steel monomer of tiles, radial magnetizing is carried out, the difficulty of annular magnetic steel radial magnetizing is solved and solves using the complicated problem of the magnet steel monomer packaging technology of axial magnetized, so as to improve the draw ratio of magnet steel axle, cost is reduced, the application of axial linear motor is expanded.
Description
Technical field
The present invention relates to axial linear motor field, and in particular to a kind of big L/D ratio magnetic axis knot of axial linear motor
Structure.
Background technology
The cylindrical shape axial linear motor of magnetic plug trigger switch has many advantages：（1）It is simple in construction.Cylindrical linear electricity
Machine needs not move through intermediate conversion mechanism and directly produces linear motion, greatly simplifies structure, and movement inertia is reduced, and dynamic is rung
Performance and positioning precision is answered to greatly improve；Reliability is also improved simultaneously, cost has been saved, makes manufacture and safeguards easier.
Its primary and secondary can be directly becoming a part for mechanism, and this unique combination causes this advantage further to embody.
（2）It is adapted to high-speed straight-line motion.Because in the absence of the constraint of centrifugal force, common material can also reach higher speed.And
If primary and secondary preserves gap with air cushion or magnetic pad, without Mechanical Contact during motion, thus motion parts are also just without rubbing and make an uproar
Sound.So, transmission parts do not wear and tear, and can greatly reduce mechanical loss, it is to avoid the institute such as towing cable, cable wire, gear and belt pulley
The noise caused, so as to improve whole efficiency.（3）Armature winding utilization rate is high.In cylindrical linear induction motor, it is primary around
Group is cake formula, and without End winding, thus winding utilization is high.（4）Without transverse edge effect.Transversal effect refers to due to horizontal stroke
The weakening in the boundary magnetic field caused to cut-offfing, and cylindrical linear laterally cut-off by nothing, so radially even point of magnetic field
Cloth.（5）Easily against unilateral magnetic force problem.Radial pull cancels each other, the problem of being substantially not present unilateral magnetic force.（6）
It can easily be accommodated and control.By adjusting voltage or frequency, or secondary materials are changed, different speed, electromagnetic push can be obtained,
Occasion is back and forth run suitable for low speed.（7）Strong adaptability.The primary iron core of linear electric motors can seal integral with epoxy resin,
With preferable anti-corrosion, humidity resistance, it is easy to use in the environment of moist, dust and pernicious gas；And can be designed to
Multiple structural forms, the need for meeting different situations.（8）Zero slot effect.In the plane cutter for pursuing path accuracy, more
It is leading.
The principle of axial linear motor is outside radial magnetic force line stator, to be set with the mover being made up of magnetic plug, profit
With the electric current by magnetic plug, radial magnetic force line is cut, the Lorentz force perpendicular to power is then generated, mover fortune is driven
It is dynamic.Because magnetic plug encloses the magnetic line of force of radial direction, so its efficiency is higher.But it is due to technologic reason, production
The radial magnetizing ring alnico of circular ring type is relatively difficult, is often obtained in practice using the magnet steel same polarity mutual exclusion of axial charging
" class " radial magnetic field.It is a series of axial magnetic steel, is combined according to certain rule, as shown in Figure 4, by N/S magnetic poles
Three magnet steel of series connection are into one group, and then like pole is relative between every group, and magnetic radially is then formed on joint face
The line of force, and obtain " class " radial magnetic field described in us.It is alternate to be combined into me that some " class " radial magnetic fields are successively by N, S, N, S ...
Required for motor stator magnetic axis.The magnet steel stator of this utilization axial charging, is made up of (see Fig. 4) several parts：1st, overcoat
It is the stainless steel tube of a walled thickness.2nd, through the non-magnetic heart axle of whole magnetic steel of stator.3 and two ends by screw thread and the heart
AO end cap.4th, the whole magnetic axis of cylindric axial magnetic steel prepared according to pitch design demand is supported by two ends, and magnetic
The main body of axle --- cylinder magnet steel, is that same polarity is opposed between every group, in extremely strong mutually exclusive state, each magnetic pitch it
Between repulsion, it is complete to be balanced by middle non-magnetic heart axle by the screw thread of the thread ending cover at two ends, therefore whole magnetic axis
Resistance to bending refuses very little.When motor works, magnetic axis is supported by two ends, fixed.Mover coil is enclosed on outside stator, by line slideway about
Beam, makes mover be moved along a straight line along stator axle center.Using the grating parallel to magnetic axis, the move distance of mover is accurately surveyed
Amount and feedback control.
The unique structure of axial linear motor is compared with flat board linear electric motors, and mover and stator do not have huge static drawing
Power, it is convenient and safe to using and installing band.But it have the shortcomings that one it is fatal, exactly because it be two ends support, it is impossible to do
Into the motor of big L/D ratio.That is the stroke of motor is influenceed by the diameter of stator magnet steel shaft.When magnetic axis has arrived certain length
Degree, due to the deadweight of magnet steel, causes magnetic axis middle part is sagging to cause whole magnetic axis bending.Compressing is enclosed on stator magnetic axis after magnetic axis is sagging
Outer mover, causes mover retard motion.This just limits to the use of axial linear motor, and the effective travel of motor can not be too
It is long, that is to say, that the draw ratio that stroke is done by magnetic is constrained, it is impossible to too big, it can only be exchanged for the method for the diameter for increasing magnet steel
Larger stroke.This have the consequence that：1st, the consumption of rare earth magnetic steel is increased, causes cost to sharply increase.2nd, it is merciless
Ground adds the weight of equipment and the intensity of equipment, adds the manufacturing cost of equipment, have impact on the application of shaft type motor.
3rd, the great redundancy of motor thrust is likely to cause, and causes the significant wastage of whole system electrical design.Therefore, how to improve
The draw ratio of axial linear motor, is to expand one of shaft type motor application scope more urgent problems under the present conditions.
We also once took some ancillary methods to improve draw ratio in practice, such as：Apply when mounted to magnet steel stator
Certain tension force, so as to overcoming gravity sag.We also took by the hollow round hole of mover it is appropriate in gravity（Vertical direction
On）Slotted hole is made, the distance of magnetic axis gravity sag is fallen so as to compensation, these behaves also all have received certain actual effect.But all
Do not tackle the problem at its root.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of big L/D ratio magnetic axis structure of axial linear motor, using one
The cross hollow shaft of section is planted as the support of magnet steel, to resist the gravity sag of magnet steel axle；Using the magnet steel list of tiles
Body, carries out radial magnetizing, solves the difficulty of annular magnetic steel radial magnetizing and solves the magnet steel monomer assembling work using axial magnetized
The complicated problem of skill, so as to improve the draw ratio of magnet steel axle, reduces cost, expands the application of axial linear motor.
The present invention is achieved through the following technical solutions：
A kind of big L/D ratio magnetic axis structure of axial linear motor, including cross hollow shaft, fan-shaped radial direction magnetic shoe, sleeve pipe and end
Lid, the cross hollow shaft is above and below hollow circular shaft outer peripheral face, symmetrical raised axial rib structure, outside cross hollow shaft
The fan-shaped radial direction magnetic shoe of side face axially spaced-apart connection, each section is connected between rib two-by-two by four pieces of fan-shaped radial direction magnetic shoe inner arc walls
Axle side face on, adjacent segment magnetic shoe is different level magnetic shoe, and cross hollow shaft and fan-shaped radial direction magnetic shoe link into an integrated entity and be sleeved on sleeve pipe
Interior, two ends are engaged using end cap and fixed.
Further improvement project of the invention is that the middle cavity two ends connecting water pipe head of the cross hollow shaft forms cooling
Aquaporin, water pipe head is engaged fixation with overcoat by end cap.
Further improvement project of the invention is that the fan-shaped radial direction magnetic shoe inner arc wall scribbles anaerobic adhesive and cross hollow shaft
Outer peripheral face is bonded.Anaerobism glue sticking is firm.
Further improvement project of the invention is that cross hollow shaft is made of magnetic conduction mild steel.Due to cross hollow shaft
With magnetic conductivity, so magnetic shoe is to inhale attached to it.
Further improvement project of the invention is to be connected with partition in the cross hollow shaft at every section of magnetic shoe end.Partition is accurate
It is determined that every section of position magnetic shoe spacing, and prevent magnetic shoe axially displaced.
Further improvement project of the invention is that partition is that cross bore is opened at disk center, and partition is bonded in outside cross heart axle
On side face.
Further improvement project of the invention is that partition is to open rib in four fanning strips or two and half ring plates, half ring plate
A ring groove is provided with groove, cross hollow shaft outer peripheral face, the partition clamping of ring-type is constituted and/or is bonded in annular groove.Partition clamping
In annular groove, structure is more firm never to occur not shifting phenomena.
Further improvement project of the invention is that rib is removed on the cross hollow shaft outer peripheral face between two sections of magnetic shoes.Mitigate
The gravity sag of magnetic axis gross weight, further resistance magnetic axis.
Further improvement project of the invention is to be connected with partition in the cross hollow shaft at every section of magnetic shoe end, partition is
Two and half ring plates, half ring plate composition ring-type is bonded on cross heart axle outer peripheral face, or is provided with one on cross hollow shaft outer peripheral face
Ring groove, constitutes the partition clamping of ring-type and/or is bonded in annular groove.
Further improvement project of the invention is that described sleeve pipe is made of stainless steel.
The present invention compared with prior art, with following obvious advantage：
First, using the curved surface magnet steel of tiles, and the technique that magnetized with existing magnet steel realizes radial magnetic field, composition it is fan-shaped radially
Magnetic shoe, in practice it has proved that between each group of fan-shaped magnet steel, pulls open the axial thrust produced by 1/3 magnetic pitch ratio is not pulled open and wants big by 1/
3.So using the shading ring of non-magnet material to be divided into length for 1/3 magnetic pitch spacing between each group of fan-shaped magnetic shoe.This Shen
It please have the advantage that：（1）Intangibly increase magnet steel magnetic flux section：With magnet steel diameter 32mm, pitch（N-S distance）90mm
Magnetic axis calculate, such as use cylinder axial magnetic steel, if axial magnetic steel parameter is：Magnet steel diameter 32mm, magnet steel central hole diameter
10mm, then magnetic flux section is that magnet steel face area multiplies 2（Two ends mutual exclusion thus multiply 2）, i.e.,（16×16×3.14-5×5×3.14）×
2=1450 square millimeters.Similarly parameter, use the magnetic flux area of this patent for：The circumferential surface product of fan-shaped magnet steel subtracts gap
Spacer area, if fan-shaped magnet steel diameter=32mm, fan-shaped magnet steel length（The 2/3 of magnetic pitch）=60mm, intermediate isolating length（Magnetic section
Away from 2/3）=30mm, 4, gap of isolation, spaced slot width 2mm, i.e. 32 × 3.14 × 60-4 × 2 × 60=5548 square milli
Rice, the latter is the former nearly 4 times fully.（2）Greatly reduce the consumption of rare earth magnetic steel material.Same above-mentioned parameter, is used
Cylinder axial magnetic steel need to be about with magnetic steel material end area multiply length multiply proportion, i.e. 1.6 × 1.6 × 3.14 × 9 × 7.8-0.5 ×
0.5 × 3.14 × 9 × 7.8 be about 510 grams.And use this patent consumptive material for：1.6×1.6×3.14×6×7.8-1.1×1.1
× 3.14 × 6 × 7.8 about wait 198 grams（Magnetic shoe thickness=5mm, interval is ignored）, the two saves material 61% compared to relatively whole.
（3）Tiles magnet steel is that absorption does not have huge repulsion, therefore manufacturing process letter in cross hollow shaft, between magnet steel
It is single, it is safe and reliable.
2nd, the advantage of cross hollow shaft：（1）Special-shaped cross hollow shaft, is whole magnetic shaft support, it is by the low of magnetic conduction
Carbon steel（Easily cut iron, electrical sheet）Drawing is formed, due to magnetic conductivity, so magnetic shoe is absorption upper, during manufacture
Anaerobic adhesive adhesion can be filled therebetween, more firmly.（2）Four ribs added on section, it is possible to achieve fixed when magnet steel is assembled
Position, while strengthening the bending resistance torque of deformed steel.（3）The hollow hole of cross hollow shaft, when motor works, can be used as cooling
The water stream channel of recirculated water, can reduce the temperature rise of motor stator.
Combined cause, does magnetic shaft support, with stronger bending resistance as a result of hollow shaft of the thick walled hollow with rib
Torque, adds and uses tiles radial magnet steel magnetic flux section big, lightweight, so the draw ratio of whole magnetic axis is greatly increased
By force, and cost is then exponentially reduced.
Brief description of the drawings
Fig. 1 is disassembly and assembly structure schematic diagram of the present invention.
Fig. 2 is schematic cross-section of the present invention.
Fig. 3 is embodiment 2 except the magnetic axis structural representation of Decanning.
Fig. 4 is the magnetic axis structural representation that " class " radial magnetic field is made.
Embodiment
Embodiment 1
As shown in Figure 1 and Figure 2, the present invention includes cross hollow shaft 1, fan-shaped radial direction magnetic shoe 2, stainless steel sleeve pipe 3 and end cap 4, described
Cross hollow shaft 1 is above and below hollow circular shaft outer peripheral face, the symmetrical raised structure of axial ribs 11, the periphery of cross hollow shaft 1
The fan-shaped radial direction magnetic shoe 2 of face axially spaced-apart connection, each section by four pieces of fan-shaped inner arc walls of radial direction magnetic shoe 2 be connected to two-by-two rib 11 it
Between axle side face on, adjacent segment magnetic shoe is different level magnetic shoe, and fan-shaped radial direction magnetic shoe 2 links into an integrated entity and is sleeved in sleeve pipe 3, cross
The middle cavity two ends connecting water pipe first 5 of hollow shaft 1, forms cooling-water duct 12, and water pipe first 5 is engaged by end cap 3 and fixed.
Cross hollow shaft 1 is made of magnetic conduction mild steel, with magnetic conductivity, so magnetic shoe is adsorbed in hollow shaft,
In order to further be stably connected with, it is Nian Jie with the outer peripheral face of cross hollow shaft 1 that the fan-shaped inner arc wall of radial direction magnetic shoe 2 scribbles anaerobic adhesive.
Prevent magnetic shoe from loosening axially displaced, partition 6 is connected with the cross hollow shaft 1 at every section of magnetic shoe end, partition 6 is round
Cross bore is opened at piece center, and partition is bonded on cross heart axle outer peripheral face.In order to further prevent magnetic shoe loose shift, partition 6 can
Make four fanning strips（Rib groove is opened in two and half ring plates, half ring plate）, a ring groove, group are provided with cross hollow shaft outer peripheral face
Partition clamping circlewise and it is bonded in annular groove.
Embodiment 2
As shown in figure 3, rib is removed on cross hollow shaft outer peripheral face between two sections of magnetic shoes, the cross hollow shaft at every section of magnetic shoe end
On be connected with partition, partition is that a ring groove is provided with two and half ring plates, cross hollow shaft outer peripheral face, constitute ring-type partition card
Connect and be bonded in annular groove.
Claims (10)
1. the big L/D ratio magnetic axis structure of a kind of axial linear motor, it is characterised in that including cross hollow shaft（1）, fan-shaped footpath
To magnetic shoe（2）, sleeve pipe（3）And end cap（4）, the cross hollow shaft（1）Be above and below hollow circular shaft outer peripheral face, it is symmetrical convex
Play axial ribs（11）Structure, cross hollow shaft（1）The fan-shaped radial direction magnetic shoe of outer peripheral face axially spaced-apart connection（2）, each section by four
Block sector radial direction magnetic shoe（2）Inner arc wall is connected to rib two-by-two（11）Between axle side face on, adjacent segment magnetic shoe is different level magnetic shoe,
Cross hollow shaft（1）And fan-shaped radial direction magnetic shoe（2）Link into an integrated entity and be sleeved on sleeve pipe（3）Interior, two ends use end cap（3）Occlusion is solid
It is fixed.
2. a kind of large diameter-ratio magnetic axis structure of shaft type straight line according to claim 1, it is characterised in that：The cross is hollow
Axle（1）Middle cavity two ends connecting water pipe head（5）, form cooling-water duct（12）, water pipe head（5）Pass through end cap（4）With overcoat
（3）Occlusion is fixed.
3. a kind of large diameter-ratio magnetic axis structure of axial linear motor according to claim 1, it is characterised in that：The sector
Radial direction magnetic shoe（2）Inner arc wall scribbles anaerobic adhesive and cross hollow shaft（1）Outer peripheral face is bonded.
4. a kind of large diameter-ratio magnetic axis structure of axial linear motor according to claim 1 or 3, it is characterised in that：Cross
Hollow shaft（1）It is made of magnetic conduction mild steel.
5. a kind of large diameter-ratio magnetic axis structure of axial linear motor according to claim 1 or 2, it is characterised in that：Every section
Cross hollow shaft at magnetic shoe end（1）On be connected with partition（6）.
6. a kind of large diameter-ratio magnetic axis structure of axial linear motor according to claim 5, it is characterised in that：Partition（6）
It is that cross bore is opened at disk center, partition is bonded on cross heart axle outer peripheral face.
7. a kind of large diameter-ratio magnetic axis structure of axial linear motor according to claim 5, it is characterised in that：Partition（6）
It is that rib groove is opened in four fanning strips or two and half ring plates, half ring plate, a ring groove is provided with cross hollow shaft outer peripheral face, constitutes
The partition clamping of ring-type and/or it is bonded in annular groove.
8. a kind of large diameter-ratio magnetic axis structure of axial linear motor according to claim 1, it is characterised in that：Two sections of magnetic shoes
Between cross hollow shaft outer peripheral face on rib remove.
9. a kind of large diameter-ratio magnetic axis structure of axial linear motor according to claim 8, it is characterised in that：Every section of magnetic shoe
Partition is connected with cross hollow shaft at end, partition is two and half ring plates, and half ring plate composition ring-type is bonded in outside cross heart axle
A ring groove is provided with side face, or on cross hollow shaft outer peripheral face, the partition clamping of ring-type is constituted and/or is bonded in annular groove.
10. a kind of large diameter-ratio magnetic axis structure of axial linear motor according to claim 1, it is characterised in that：The set
Pipe（3）It is made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710568242.4A CN107317455A (en) | 2017-07-13 | 2017-07-13 | A kind of big L/D ratio magnetic axis structure of axial linear motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710568242.4A CN107317455A (en) | 2017-07-13 | 2017-07-13 | A kind of big L/D ratio magnetic axis structure of axial linear motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107317455A true CN107317455A (en) | 2017-11-03 |
Family
ID=60177691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710568242.4A Pending CN107317455A (en) | 2017-07-13 | 2017-07-13 | A kind of big L/D ratio magnetic axis structure of axial linear motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107317455A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117477891A (en) * | 2023-12-28 | 2024-01-30 | 燕山大学 | Rotor housing with slotting structure and magnetic shaft type linear motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102195371A (en) * | 2010-03-12 | 2011-09-21 | 松林数控设备(深圳)有限公司 | Linear motor stator |
| CN102263448A (en) * | 2010-11-24 | 2011-11-30 | 山东力久特种电机有限公司 | Permanent magnet motor low-carbon steel hollow circular pipe type rotor structure |
| CN105830322A (en) * | 2013-12-20 | 2016-08-03 | 富士机械制造株式会社 | Linear motor device |
| CN206908502U (en) * | 2017-07-13 | 2018-01-19 | 吴德林 | A kind of big L/D ratio magnetic axis structure of axial linear motor |
-
2017
- 2017-07-13 CN CN201710568242.4A patent/CN107317455A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102195371A (en) * | 2010-03-12 | 2011-09-21 | 松林数控设备(深圳)有限公司 | Linear motor stator |
| CN102263448A (en) * | 2010-11-24 | 2011-11-30 | 山东力久特种电机有限公司 | Permanent magnet motor low-carbon steel hollow circular pipe type rotor structure |
| CN105830322A (en) * | 2013-12-20 | 2016-08-03 | 富士机械制造株式会社 | Linear motor device |
| CN206908502U (en) * | 2017-07-13 | 2018-01-19 | 吴德林 | A kind of big L/D ratio magnetic axis structure of axial linear motor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117477891A (en) * | 2023-12-28 | 2024-01-30 | 燕山大学 | Rotor housing with slotting structure and magnetic shaft type linear motor |
| CN117477891B (en) * | 2023-12-28 | 2024-03-05 | 燕山大学 | Rotor housing with slotting structure and magnetic shaft type linear motor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20110115326A1 (en) | Electrical machines | |
| CN101092225A (en) | Traction drive for elevator | |
| EP1158547A3 (en) | Electromagnetic actuator and composite electro-magnetic actuator apparatus | |
| CN102577054B (en) | Linear motor | |
| CN206908502U (en) | A kind of big L/D ratio magnetic axis structure of axial linear motor | |
| CN105048763A (en) | Single-phase cylindrical linear vibration motor | |
| JP6324384B2 (en) | Electromechanical transducer | |
| CN105048764A (en) | Single-phase cylindrical switch-reluctance linear motor | |
| WO2020001294A1 (en) | Five-degree-of-freedom bearingless switched reluctance motor | |
| CN107317455A (en) | A kind of big L/D ratio magnetic axis structure of axial linear motor | |
| KR102472646B1 (en) | Method for manufacturing pole piece assembly, pole piece assembly and magnetic gear having the same | |
| US20120194019A1 (en) | Dynamically Induced and Reactive Magnetic Hysteresis Applications and Methods | |
| CN103817790B (en) | The manufacture method of a kind of magnetosphere and Halbach array | |
| CN211039473U (en) | Radial magnetic field miniature brake | |
| CN111416501B (en) | Magnetic gear device | |
| CN108809024B (en) | Axial single-degree-of-freedom bearingless switched reluctance motor | |
| CN104022615B (en) | Permanent magnetic DC straight-line flexible driving mechanism | |
| CN113937977B (en) | Permanent magnet gear speed changing device | |
| CN103560644B (en) | A kind of magnetic guiding loop stator cylinder shape linear switched reluctance motor | |
| CN210431193U (en) | Modulation ring | |
| CN103560645A (en) | Magnetic ring rotor cylindrical straight-line switch reluctance machine | |
| CN103560647B (en) | A kind of permanent-magnetic clamp stator cylinder shape linear switched reluctance motor | |
| CN111030414A (en) | Single-phase cylindrical linear oscillation motor | |
| CN111865041A (en) | Modulation ring | |
| CN113949223B (en) | Permanent magnet gear speed changing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |