CN101968114A - Magnetic suspension planetary gear variable-speed motor - Google Patents
Magnetic suspension planetary gear variable-speed motor Download PDFInfo
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- CN101968114A CN101968114A CN2010102952059A CN201010295205A CN101968114A CN 101968114 A CN101968114 A CN 101968114A CN 2010102952059 A CN2010102952059 A CN 2010102952059A CN 201010295205 A CN201010295205 A CN 201010295205A CN 101968114 A CN101968114 A CN 101968114A
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Abstract
The invention relates to a magnetic suspension planetary gear variable-speed motor which comprises a ring gear, a sun gear and a plurality of planet gears arranged between the ring gear and the sun gear. The ring gear, the sun gear and the planet gears are respectively provided at least one magnetic block along the radial direction of circumferential direction of an excircle per se, homopolarities of the magnetic blocks on the ring gear and the planet gears are opposite to generate repulsion so that the ring gear drives the planet gears to rotate, and the homopolarities of the magnetic blocks on the planet gears and the sun gear are opposite to generate repulsion so that the planet gears drive the sun gear to rotate. By transmitting a torque between the magnetic block on the ring gear and the magnetic block on the sun gear through the planet gears with the magnetic blocks, the overall volume of a magnetic suspension transmission mechanism is effectively reduced, meanwhile, an air gap between the ring gear as a drive body and the sun gear as a driven body is reduced, the transmission of the magnetic torque is ensured to be stable, and the variable-speed motor has the advantages of safe use, stable torque transmission and long service life.
Description
Technical field
The present invention relates to a kind of planetary gear speed-changing machine, is that a kind of floating structure of magnetic of utilizing drives planetary variable-speed motor specifically.
Background technique
The floating transmission of magnetic has had the inventor to propose in eighties of last century, and utilizes Electromagnetic Design to go out the transmission of the floating gear of magnetic.In many dissimilar gear transmissions are used, active drive assembly and passive transmitting assemblies, the two is isolated separately mutually and is necessary.For example in the magnetic drive pump of eighties of last century invention, the active drive assembly can be centered on by first fluid, and second fluid that passive transmitting assemblies can be passed through surrounds, and first and second fluids must be isolated mutually.Such designing requirement, the liquid that is exactly the two must isolate, and carries out the separation on the entity.In order to address this problem, can use non magnetic diaphragm to keep apart mutually between the two, contactless magnetic active drive assembly, its magnetic force can penetrate intermediate medium and drive passive component.
U. S. Patent numbering 3649137 is that Laing delivered on March 14th, 1972, has described a magnetic coupling centrifugal pump.It comprises the centrifugal motor of a magnetic transmission, and motor is made up of a permanent magnetosphere of annular and soft iron magnetic polar circle, promptly means it is the torque that has reduced motor on two polar rings of flowing through by the magnetic groove.
U. S. Patent numbering 4115040 is that knorr delivered on September 19th, 1978, has described a permanent-magnet pump, and this design receives synchronous transfer driving moment p-m rotor by pump impeller and one from external rotor and forms.The position of external rotor is multi-form axially and radially, and the inner rotator on opposite forms the air clearance between them.By tabular permanent magnets on the rotor, its two air clearance by face-to-face formation is very thin.This pump impeller axle and inner rotator are positioned in the common space, and the space of this unmagnetized material is the closed area that forms by the air clearance from the outside by.
U. S. Patent numbering 3826938 is that Filer delivered on July 30th, 1974, has described magnetic force coupling electric machine driven pump.This patent magneto drive coupling can be used for motor driving pump and some other occasion, magnetic circuit comprising the coupling assembly formation of isolating, in case the fluid stopping body flows mutually, and the diversification of an activation therein fixedly the part of electric flux also formed the part of magnetic circuit, the path of also improving the magnetic current flux simultaneously.
U. S. Patent numbering 3378710 is that Martin delivered in April 16 nineteen sixty-eight, discloses a kind of magnetic drives.It has described the magnetic driving is to be similar to a planetary pinion mechanical transmission, but is to replace common gear with the strip magnetic patch on planetary position.The annular magnetic patch in outside, middle promptly one by many to bar shaped, radially the magnet ring and the center sun formed of the pure iron of saturating magnetic has a common jack shaft.Any one assembly all can become actuator, and the first startup person is exactly an actuator, drives second Passive part by the magnetic transmission.No matter be that speedup or this device that slows down can be reached task.
U. S. Patent numbering 4850821 is that the wine well was delivered on July 25th, 1989, discloses a kind of many magnetic drive pumps.The component part of this pump is a magnetic parts, and one of them bigger magnet ring interacts by one group of planetoid magnetic patch.The arrangement of the planet magnetic patch of introducing in this patent, with respect to annular magnetic patch, planetoid inwardly moves diametrically, also can order about its outside motion via big ring.
U. S. Patent numbering 4725197 is that Russell delivered on February 16th, 1988, has introduced a kind of design of novel impeller pump.Need signal transmitter under the oil well in this design, comprise an annular impeller, it is installed in a columniform shell, and mud is flowed out along drill string.Each impeller and casing have adopted two magnetic patch covers, its axially relative pole arrangement, make each other when the axial impeller motion of a direction, to lean on the magnetic repulsion between the two magnetic patch cover to interact, the axial motion in the opposite direction of the impeller of magnetic patch will be tended to by the magnetic repulsion decision between the impeller of a magnetic patch cover and magnetic patch.By the magnetic coupling between two groups of magnets, it produces driving torque and is transmitted mutually by the impeller that magnetic patch has been installed.
The paper of one piece " magnetic coupling can be brought higher torque force " by name is delivered by NASA, and the back is by the technology numbering MSC-21171 of Nasa.The achievement in research of the magnetic shaft coupling in this piece article and general field, and some information of correlation technique, can in aerospace science and technical report, find, this is a comprehensive digest and index periodical, science and space technology are done report widely, comprising world's space research achievement paper.It is transmitting torque power how that this piece paper has been discussed the design of this special magnetic coupling, and the magnetic flux of magnetic live axle is by the outer fluid of running shaft, and the transmission that produces magnetic torque place the magnetic conductance fluid simultaneously in the space, or Electromagnetic Design is avoided loss of magnetic force or the like.
When in deceleration or the transmission of speedup requirement use magnetic, drive and turn and be driven the problem of varying in size of turning and to solve.At first, must take measures, to guarantee to drive the magnetic pole of turning and to be driven air clearance between the magnetic pole of turning, not big not enough to the interaction magnetic force that results between them, powerful magnetic force must guarantee that these are coupled between turning, the intensity in magnetic field can not allow its slip stall, can not influence yet drive and be driven between turning synchronously.If the small rotation body is arranged in the home position of bigger solid of rotation, two solid of rotation must reduce with one heart between driven member and the driving body magnetic pole as far as possible may different size air gap, avoid taking place injurious effects.
Summary of the invention
For solve in the prior art slow down or the floating drive mechanism volume of speedup magnetic excessive, excessive or the too small shortcomings such as excessive stall of transmitting torque power or too small driving force deficiency that cause of air gap between driven member and the driving body, the invention provides the floating drive mechanism compactness of a kind of magnetic, volume is simplified, and the air gap between driven member and the driving body is little and can transmit the magnetic floating star change set of enough torque forces.
In order to achieve the above object, the technical solution used in the present invention is: a kind of magnetic floating star change set, by a ring gear, a sun gear and place ring gear and sun gear between the several rows star-wheel form, to be described ring gear, sun gear, planet wheel radially be respectively equipped with at least one magnetic patch along separately cylindrical circumferencial direction to its technical characterstic, the relative repulsion that produces with magnetic patch homopolarity on the planet wheel of ring gear makes the rotation of ring gear transmission planet wheel, and planet wheel rotates planet wheel transmission sun gear with the relative repulsion that produces of magnetic patch homopolarity on the sun gear.
Further, described magnetic patch is rare earth permanent magnet magnetic patch or iron block or copper billet.
Further, described ring gear drives sun gear by planet wheel, or sun gear drives ring gear by planet wheel.
Further, the spacing between described magnetic patch equates.
Further, be provided with the iron plate that intercepts magnetic disturbance between described a plurality of planet wheel.
Further: magnetic patch number on magnetic patch number+2 * planet wheel on magnetic patch number=sun gear on the described ring gear, transmission speed ratio are the number of magnetic patch on magnetic patch number/ring gear on the sun gear.
Again further: set up the corresponding mutually magnetic patch in a plurality of positions respectively on axially on described ring gear, sun gear, the planet wheel.
After adopting above technological scheme, the beneficial effect that the present invention reaches is:
1, planet wheel is as a middle solid of rotation of variable-speed motor, work the moment loading that transmits between driving body ring gear and the driven member sun gear, reduced drive and be driven between effective air gap, share moment of torsion between ring gear and the sun gear by solid of rotation in the middle of increasing this group, can consider to improve whole moment of torsion by increasing the quantity of magnetic patch on the planet wheel in proportion;
2, adopt planetary structure with respect to the parallel axes structure, interaction point in the transmission process between the magnetic patch increases, and the torque of transmission increases, when needs transmit same torque power, the driving of parallel axes helps reducing the size and the quantity of used magnetic patch, economical with materials more; Owing to can have the phase mutual interference between the magnetic patch that planet wheel is installed, can be at isolating phase mutual interference between the magnetic patch laying iron plate between the planet wheel; Use the rare earth permanent magnet magnetic patch, can guarantee that operating temperature is up to 200 ℃ under, the normal operation of planetary structure; Spielpassung between ring gear and planet wheel, planet wheel and the sun gear, the more little driving torque in gap is big more, planet speed change mechanism is when running up, the homopolarity magnetic line of force of two corresponding magnetic patch can become flat, be easy to cause stall, two other homopolarity suction that two corresponding magnetic patch are opposing can prevent stall on the contrary;
3, in transmission process, the footpath upwards interacts and produces driving torque power between the magnetic patch, if will increase this torque force, under the situation that does not change the magnetic patch size, can realize increasing radially torque force by increasing along the number of planet axis or the axial magnet ring of solar shaft; Ring gear also can be designed to rotate, and ring gear connects automatic control system can realize stepless change, when output speed requires can realize stepless change by regulating the ring gear rotating speed when constant; The design's variable-speed motor mainly uses on wind-driven generator.The way of output for variable-speed motor does not have specific requirement, also can be used on some other equipment, as: water turbine, steam turbine etc.If will make speed reducer, only need do local the adjustment in design according to applying working condition and deceleration requirement, just can oppositely export and form speed reducer.The design can make speed reducer on schematic diagram, designed speed reducer can use in the using scope of speed reducer.
The present invention adopts the planet wheel of band magnetic patch to transmit on the ring gear moment of torsion between magnetic patch on the magnetic patch and sun gear, effectively reduce the overall volume of the floating drive mechanism of magnetic, reduce simultaneously as the ring gear of driving body with as the air gap between the sun gear of driven member, it is stable to guarantee to transmit the magnetic moment of torsion, and variable-speed motor is safe in utilization, transmitting torque is stable, the life-span is long.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a magnetic flux line schematic representation of the present invention.
Among the figure: ring gear 1, planet wheel 2, sun gear 3, the first magnetic patch 4, the second magnetic patch 5, the three magnetic patch 6, planet wheel iron plate frame 7, sun gear iron plate frame 8, planet carrier 9, iron plate 10.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
Shown in Figure 1: magnetic floating star change set comprises planet carrier 9, ring gear 1, planet wheel 2 and sun gear 3.Ring gear 1 is installed on the speed change frame, ring gear 1 radially is provided with at least one magnetic patch along the cylindrical circumferencial direction--first magnetic patch 4, planet wheel 2 comprises at least one magnetic patch--second magnetic patch 5 and planet wheel iron plate frame 7, second magnetic patch 5 is and follows star-wheel iron plate frame 7 and radially be arranged on the planet wheel iron plate frame 7, or a plurality of second magnetic patch, 5 edge-circumference radially are arranged on the planet wheel iron plate frame 7, sun gear 3 comprises at least one magnetic patch--the 3rd magnetic patch 6 and sun gear grillage 8, the 3rd magnetic patch 6 is along sun gear iron plate frame 8 and radially is arranged on the sun iron plate frame 8, or a plurality of the 3rd magnetic patch 6 radially is arranged on the sun gear iron plate frame 8 along a circumference; First, second and third magnetic patch 4,5,6 can be identical or different, adopts rare earth permanent magnet magnetic patch or iron block; Sun gear 3 is arranged in the ring gear 1, and more than one planet wheel is arranged at 3 of ring gear 1 and sun gears, is respectively equipped with the iron plate 10 that intercepts magnetic disturbance between each planet wheel; The relative repulsion that produces with second magnetic patch, 5 homopolarities on the planet wheel 2 of first magnetic patch 4 on the ring gear 1 makes 2 rotations of ring gear 1 transmission planet wheel, the relative repulsion that produces with the 3rd magnetic patch 6 homopolarities on the sun gear 3 of second magnetic patch 5 on the planet wheel 2 makes 3 rotations of planet wheel 2 transmission sun gears, Spielpassung between ring gear 1 and planet wheel 2, planet wheel 2 and the sun gear 3, gap more little transmitting torque more effect is good more.
Ring gear 1 uses 14 first magnetic patch 4 in the illustrated embodiment of the present invention, and sun gear 3 has used 4 the 3rd magnetic patch 6, and planet wheel 2 has used 5 second magnetic patch 5, ring gear first magnetic patch number=sun gear the 3rd magnetic patch number+2 * planet wheel, the second magnetic patch number.When ring gear during as driving element, mechanism's speed increasing ratio is ring gear first magnetic patch number/sun gear the 3rd magnetic patch number, i.e. 14/4=3.5: 1.Ring gear be one annular and have 14 groove structures, it supports rotation by input shaft, inlays first magnetic patch 4 respectively in 14 grooves of ring gear; Sun gear 3 has been inlayed 4 the 3rd magnetic patch 6, and sun gear supports rotation by output shaft, and sun gear and ring gear are the concentric co-axial lines; Planet wheel 2 has been inlayed 5 second magnetic patch 5, and planet wheel supports rotation by planet axis; When ring gear 1 counterclockwise rotates, drive first magnetic patch 4 towards counterclockwise direction rotation, give second magnetic patch 5 on the planet wheel 2 by contactless magnetic force torque transfer, the magnetic force transmission of torque is because magnetic flux line passes the air clearance (seeing shown in Figure 2) between first magnetic patch 4 and second magnetic patch 5, and planet wheel 2 is with counterclockwise direction rotation; Second magnetic patch 5 on the planet wheel 2 is with counterclockwise direction rotation, the magnetic force transmission of torque is because magnetic flux line passes the air clearance (seeing shown in Figure 2) between second magnetic patch 5 and the 3rd magnetic patch 6, sun gear 3 rotates in the direction of the clock, this moment, variable-speed motor was the speedup magnetic drives, be that sun gear 3 is opposite with ring gear 1 sense of rotation, the speed of sun gear rotation is 3.5 times of ring gear.The design greatly reduces and drives ring gear and be driven effective magnetic force spatial joint clearance between the sun gear, by increasing the quantity of planet wheel, the proportional increase of moment of torsion, each planet wheel can be shared the torque loads that ring gear and sun gear are born, also can improve whole moment of torsion by increasing the quantity of magnetic patch on the planet wheel in proportion.
Claims (7)
1. magnetic floating star change set, by a ring gear (1), a sun gear (3) and place ring gear and sun gear between several rows star-wheel (2) form, it is characterized in that: described ring gear (1), sun gear (3), planet wheel (2) radially are respectively equipped with at least one magnetic patch along cylindrical circumferencial direction separately, the relative repulsion that produces with magnetic patch homopolarity on the planet wheel of ring gear makes the rotation of ring gear transmission planet wheel, and planet wheel rotates planet wheel transmission sun gear with the relative repulsion that produces of magnetic patch homopolarity on the sun gear.
2. magnetic floating star change set according to claim 1 is characterized in that: described magnetic patch is rare earth permanent magnet magnetic patch or iron block or copper billet.
3. magnetic floating star change set according to claim 1 is characterized in that: described ring gear (1) drives sun gear by planet wheel, or sun gear drives ring gear by planet wheel.
4. magnetic floating star change set according to claim 1 is characterized in that: the spacing between described magnetic patch equates.
5. magnetic floating star change set according to claim 1 is characterized in that: be provided with the iron plate that intercepts magnetic disturbance between described a plurality of planet wheels (2).
6. magnetic floating star change set according to claim 1, it is characterized in that: described ring gear (1) is gone up magnetic patch number=sun gear (3) and is gone up magnetic patch number+2 * planet wheel (2) and go up the magnetic patch number, and transmission speed ratio is the number of magnetic patch on magnetic patch number/ring gear on the sun gear.
7. magnetic floating star change set according to claim 1 is characterized in that: set up the corresponding mutually magnetic patch in a plurality of positions on described ring gear (1), sun gear (3), planet wheel (2) are gone up axially respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102952059A CN101968114A (en) | 2010-09-29 | 2010-09-29 | Magnetic suspension planetary gear variable-speed motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102952059A CN101968114A (en) | 2010-09-29 | 2010-09-29 | Magnetic suspension planetary gear variable-speed motor |
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| CN101968114A true CN101968114A (en) | 2011-02-09 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720823A (en) * | 2012-06-28 | 2012-10-10 | 上海电力学院 | Speed-adjustable planetary magnetic meshing flexible transmission device |
| CN102720824A (en) * | 2012-06-28 | 2012-10-10 | 上海电力学院 | Planet magnetic meshing flexible transmission mechanism |
| CN103104674A (en) * | 2011-11-13 | 2013-05-15 | 余虹锦 | Less-pole-difference magnetic field induction type magnet transmission eccentric gear pair of radial magnetic field |
| CN103715860A (en) * | 2013-12-18 | 2014-04-09 | 江苏大学 | Magnetic field enhanced type high torque density permanent magnetic type planetary gear |
| CN110848354A (en) * | 2019-09-30 | 2020-02-28 | 中北大学 | Transmission method for spaceflight based on adsorption transmission |
-
2010
- 2010-09-29 CN CN2010102952059A patent/CN101968114A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104674A (en) * | 2011-11-13 | 2013-05-15 | 余虹锦 | Less-pole-difference magnetic field induction type magnet transmission eccentric gear pair of radial magnetic field |
| CN103104674B (en) * | 2011-11-13 | 2015-12-09 | 余虹锦 | Few extreme difference magnetic field induction magnetic transmission eccentric gear pair of radial magnetic field |
| CN102720823A (en) * | 2012-06-28 | 2012-10-10 | 上海电力学院 | Speed-adjustable planetary magnetic meshing flexible transmission device |
| CN102720824A (en) * | 2012-06-28 | 2012-10-10 | 上海电力学院 | Planet magnetic meshing flexible transmission mechanism |
| CN103715860A (en) * | 2013-12-18 | 2014-04-09 | 江苏大学 | Magnetic field enhanced type high torque density permanent magnetic type planetary gear |
| CN103715860B (en) * | 2013-12-18 | 2016-03-02 | 江苏大学 | A kind of magnetic-field-enhanced high torque density magneto planetary gear |
| CN110848354A (en) * | 2019-09-30 | 2020-02-28 | 中北大学 | Transmission method for spaceflight based on adsorption transmission |
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Application publication date: 20110209 |