CN103401398A - Magnetic coupler - Google Patents
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- CN103401398A CN103401398A CN2013103402774A CN201310340277A CN103401398A CN 103401398 A CN103401398 A CN 103401398A CN 2013103402774 A CN2013103402774 A CN 2013103402774A CN 201310340277 A CN201310340277 A CN 201310340277A CN 103401398 A CN103401398 A CN 103401398A
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Abstract
The invention discloses a magnetic coupler which comprises a power input shaft, connecting flanges, permanent magnet outer rotor assemblies, cage type inner rotors, a power output shaft and a mechanical speed adjustment device, wherein the permanent magnet outer rotor assemblies have hollow cup-shaped structures, are sleeved outside the cage-type inner rotors and realize transmission of torque under the coupling action of an air gap magnetic field between the permanent magnet outer rotor assemblies and the cage-type inner rotors; the mechanical speed adjustment device can change axial air gap areas between the permanent magnet outer rotor assemblies and the cage-type inner rotors according to a lever theory, thus realizing stepless speed variation for load rotating speed. According to the magnetic coupler, a method for designing the number of pole pairs of the permanent magnet outer rotor assemblies is provided on the basis of a minimum torque ripple rule, so that the thickness of yokes and the rotating inertia of the coupler are reduced. The cage-type inner rotors can adopt structures which are the same as or similar to that of the conventional motor cage rotor iron core. The magnetic coupler disclosed by the invention can be coaxially connected with a load and can be used as a belt wheel adapter matched with a belt wheel.
Description
Technical field
The present invention relates to a kind of dynamic power machine drive technology, particularly a kind of magnetic coupling.
Background technology
So-called advanced energy saving transmission, refer to the advanced energy-conservation kind of drive and substitute the kind of drive that falls behind power consumption.Wherein the magnetic coupling transmission because having light-load starting, overload protection, slow down impact, the excellent function such as isolation torsional oscillation, so be applied in large inertia, the difficult startup mechanically, can change the backward kind of drive of " low load with strong power ", obvious energy conservation.
With transmission, being a kind of important machine driving form, is also the core coupling component of electromechanical equipment, and the characteristics of its maximum are simple in structure, and replacing facilitates and can free speed change.
According to statistics, power transmission form between prime mover and working machine is the band transmission more than 50% both at home and abroad, if can make to improve one of percentage with the efficiency of transmission, although numeral is little, to a factory or area and even the whole nation, the total amount of energy savings is still very considerable.
If magnetic coupling is used for to the band transmission that torque and rotating speed have fluctuation, but the conservative estimation energy savings is more than 10%, and can significantly improve useful life and the reliability of conveyer belt, make it become very competitive power transmission functional part.
At present existing more patent is studied magnetic coupling, with United States Patent (USP) (PatentNo.:US6,682,430B2) be the permanent-magnet disk eddy current magnetic coupling of representative and the telescopic eddy current magnetic coupling of the permanent magnetism take Chinese patent 20101019811.5 as representative, all can realize by the torque transfer of motor to load by the air gap between copper conductor and permanent magnet, its kind of drive is the induction asynchronous system, and slippage is l%～4%.
The permanent-magnet eddy current magnetic coupling of quovis modo, because slippage is large, produce than maelstrom in copper dish or copper sheathing, causes the heat waste of coupler system large, and efficiency is low, is not suitable for powerful Mechanical & Electrical Transmission equipment.
Magneto asynchronous magnetic couplings or magnetic drive device take Chinese patent 201110219054.3, Chinese patent 200910024449.0 and Chinese patent 200420025250.2 as representative, due to the cage rotor that adopts the asynchronous machine form, solved preferably the heating problem of above-mentioned copper rotor.But this kind patented technology is mainly for the production of in the dead-tight transmission device of environmental requirement or equipment, between p-m rotor and cage rotor, installed separation sleeve additional, increased the void dimension between p-m rotor and cage rotor, the increase of air gap, cause the aerial loss of magnetomotive force to increase, and reduced the magnetic flux density of air-gap field, its energy conversion efficiency is low for the permanent magnet of same volume, the moment of torsion that can transmit reduces, and the loss of permanent magnet magnetic potential is large, carries out efficiency low.
Magneto asynchronous magnetic transmission device take United States Patent (USP) (Pub.No.:US2010/0277021A1) as representative, also adopted the cage rotor of asynchronous machine form, between p-m rotor and cage rotor without separation sleeve, therefore its air gap flux density is large, leakage field is little, it is also higher to carry out efficiency, but the asychronous dynamo cage rotor that adopts is nonstandard structure, needs redesign, and not only the design cycle is long, but also need to again customize technique, mould etc., increased manufacturing cost.
Summary of the invention
The problems referred to above that exist for solving prior art, the present invention designs a kind of magnetic coupling of drag cup structure, has moment of inertia and generates heat little, the characteristics such as rotor weight light, it is level and smooth to rotate, operational efficiency is high and noise is little.
For achieving the above object, technical scheme of the present invention is as follows:
A kind of magnetic coupling, comprise power input shaft, connecting flange, permanent-magnetic outer rotor assembly, cage modle internal rotor, power output shaft and mechanical adjustable speed drive; Described permanent-magnetic outer rotor assembly is sleeved on the outside of cage modle internal rotor, between the two, has even air gap; Described permanent-magnetic outer rotor assembly is connected with power input shaft by the internal spline in connecting flange, and the cage modle internal rotor is installed on power output shaft by key connected mode or interference fit, and power output shaft is connected with load by output flange; Mechanical adjustable speed drive is sleeved on connecting flange, utilizes lever principle to drag connecting flange and the permanent-magnetic outer rotor assembly moves axially, to regulate the axial air-gap area between permanent-magnetic outer rotor assembly and cage modle internal rotor;
In described permanent-magnetic outer rotor assembly, permanent magnet can adopt radially layout or tangential two kinds of modes of layout; While adopting radially layout type, the permanent-magnetic outer rotor assembly comprises yoke and permanent magnet A and permanent magnet B; Permanent magnet A and permanent magnet B are a watt type structure, and its arc-shaped surface is inside, and magnetizing direction is opposite, and along the even circumferential layout of yoke, magnetic pole is staggered in the circumferential direction of the circle, and utilize each permanent magnet side clearance of curable cohesive material uniform filling; While adopting tangential layout type, the permanent-magnetic outer rotor assembly comprises yoke, permanent magnet, interior magnetic isolation plate, outer magnetic isolation plate and locating piece, described permanent magnet is rectangular structure, and along the even circumferential layout, when pole orientation was installed along tangent to periphery direction, adjacent permanent magnet, pole orientation was relative; Described permanent magnet locating piece is the sector structure of permeability magnetic material, and is fixed in the yoke inner surface with welding manner;
The cylindrical suit aluminum thermal fin of described permanent-magnetic outer rotor assembly, in order to heat radiation.
In described permanent-magnetic outer rotor assembly, the magnetic pole logarithm p of permanent magnet by formula
Choose, meeting f
cUnder the prerequisite of minimum value, p chooses maximum as far as possible; In following formula, f
cFor the torque ripple factor; P is the permanent magnet pole logarithm; n
sFor cage-type rotor sliver number; N
cFor p and n
sLeast common multiple.f
cChoice criteria be the minimum value that meets following formula;
Described mechanical adjustable speed drive is planar linkage mechanism, comprises dynamical element, supporting bracket, catch bar, briquetting, fork, movable pulley, bearing holder (housing, cover), splined sleeve, connecting rod, rolling bearing, fulcrum bearing; Dynamical element is fixed near the platform base prime mover or prime mover by supporting bracket, and dynamical element drives catch bar and moves vertically; Fork and fulcrum bearing are hinged, drive the connecting rod motion; Described fork utilizes bolt to be connected with briquetting, on fork, drives gathering sill; Described pulley is connected with the end of catch bar, and in the gathering sill that embeds, during the catch bar motion, pulley rolls along the gathering sill on fork, promotes fork and rotates around the hinged place of fulcrum bearing, drives the connecting rod motion; Described connecting rod one end and bearing holder (housing, cover) are hinged and connected, and the other end and fork are hinged; Bearing holder (housing, cover) links by bearing and splined sleeve, when connecting rod moves, can drive splined sleeve and do axial motion, to change the axial area of magnetic coupling internal magnetic field air gap;
The dynamical element of described mechanical adjustable speed drive can adopt stepping motor or cylinder or hydraulic cylinder, while adopting stepping motor, utilizes ball-screw or worm-and-wheel gear to realize axial motion; Described mechanical adjustable speed drive has manually and automatically controlled two kinds of control modes, by manual or automatically controlled control mode, realizes the Stroke Control of catch bar.
Permanent-magnetic outer rotor assembly of the present invention is connected with prime mover power output shaft by the key in connecting flange B, and is connected with load by the output flange on power output shaft, to adapt to the not requirement of needs speed adjusting of load.
Front end bearing block and rear end bearing seat supports are adopted respectively in the both ends of power input shaft of the present invention and power output shaft, to adapt to the requirement that the axial displacement adjustable range is long.
The splined hole of cage modle internal rotor of the present invention by sleeve is connected with power input shaft, permanent-magnetic outer rotor assembly and connecting flange by transmission of torque to belt wheel; Mechanical adjustable speed drive is arranged on the outside of the sleeve in the cage modle internal rotor, drives the cage modle internal rotor and moves axially, to be adapted to the belt wheel adapter and to need the requirement of speed governing.
Cage modle internal rotor of the present invention is assemblied on power input shaft by the interference mode, by permanent-magnetic outer rotor assembly and mounting flange by transmission of torque to belt wheel, during during for the belt wheel adapter and without speed governing.
Power input shaft of the present invention is the male splined shaft structure, by spline joint and mounting flange, is set in together; Power input shaft endoporus one end is connected with key with prime mover power output shaft, and the endoporus other end is installed bearing, realizes the radial location with power output shaft.
Power input shaft of the present invention is the multidiameter structure, one end directly links by key or other connecting mode and prime mover power output shaft, the other end links by the sleeve in spline and cage modle internal rotor, utilize spline joint by transmission of torque to the cage modle internal rotor; The cylindrical of described power input shaft is sleeved on bearing; The permanent-magnetic outer rotor assembly is connected with belt wheel by the key connection of mounting flange; Mounting flange is sleeved on the bearing outside, with for the belt wheel adapter and while needing speed governing.
Power input shaft of the present invention is the ladder optical axis, and an end directly links by key and prime mover power output shaft, and the other end links by flat key or interference fit and cage modle internal rotor; Described power input shaft is sleeved on bearing, and links by the key connecting mode with prime mover power output shaft; With for the belt wheel adapter and without speed governing the time.
Belt wheel of the present invention and connecting flange adopt the key connecting mode to link, and utilize gland to realize axial restraint, can change according to load behavior the belt wheel of different-diameter.
The cylindrical suit aluminum thermal fin of permanent-magnetic outer rotor assembly of the present invention, in order to heat radiation.
Cage modle internal rotor of the present invention directly adopts the cage rotor iron core of asynchronous machine, or the employing structure similar to the asychronous dynamo cage rotor core, and as required its endoporus is processed and installing sleeve; The axial two ends of described cage modle internal rotor respectively have a fan or only have an end to have a fan or two ends all do not have fan; Described sleeve is compressed in the endoporus unshakable in one's determination of cage modle internal rotor by key or interference mode.
Magnetic coupling of the present invention, when belt wheel is installed on the magnetic coupling output, can adopt the rear end bearing seat as support; Belt wheel is contained in the power output shaft outside by the key adapter sleeve.Mechanical adjustable speed drive is arranged on the sleeve outside.
The present invention and existing magnetic coupling or other magnetic drive device or technology are compared, and have following outstanding character and remarkable advantage:
1, the magnetic pole logarithm p in permanent-magnetic outer rotor assembly of the present invention by formula
Choose, provided the selection principle of magnetic pole logarithm; In addition, meeting f
cUnder the prerequisite of minimum value, p chooses maximum as far as possible, can guarantee yoke thickness minimum, reduces the moment of inertia of external rotor assembly of the present invention.
2, the moment of inertia due to permanent-magnetic outer rotor assembly of the present invention is little, only needs single-ended bearing supporting to get final product, and makes system more simple compact.
3, in the present invention, if establish the moment of inertia that J is the external rotor assembly, B
δFor air gap flux density, mechanical time constant is T
m,
Because J is very little, and the B of rare earth permanent magnet
δVery large, so T
mVery little; In addition, what magnetic coupling of the present invention produced rotating magnetic field is rare-earth permanent magnet, and what produce induced current is the cage rotor of asynchronous machine, so its inductance value L is very little, be L/R also very little (R is the resistance of cage rotor), so its electrical time constant is also very little.
Due to mechanical time constant and electrical time constant all very little, therefore dynamic property of the present invention is good, can carry out well speed regulating control.
4, the present invention directly adopts the cage rotor (or employing structure similar to the asychronous dynamo cage rotor) of asynchronous machine, and not only reliability is high, the whirlpool damage is little, and has kept fan page (can all keep at two ends, also can keep an end).There is a side of fan page to be in the port of mouse cage mobile terminal, greatly improved radiating condition of the present invention.
5, mechanical adjustable speed drive of the present invention is planar linkage mechanism, its application of force place both can be stepping motor, also can be air pressure or hydraulic means, also can be manually, and force application apparatus is lever construction, while being speed governing, give very little external force and can obtain larger thrust at output, not only energy-conservation, and be conducive to the accurate control of coupler speed governing.
6, existing various magnetic coupling is emerging product, the maturity of its technology and runnability are far away from conventional motors, and the present invention adopts the cage rotor of conventional motors, its design has been passed through the development of decades with manufacture, and it is optimum that structure has reached substantially, so the present invention can significantly simplify Analysis of Magnetic Circuit and calculating, shorten the design cycle of product, and can directly purchase in batches, with low cost, runnability might as well.
When 7, uneasiness of the present invention is debug speed variator, identical with the induction type asynchronous magnetic couplings; After being installed, speed regulating device can realize stepless time adjustment.The present invention, except all properties with magnetic coupling, also can be used as the belt wheel adapter, with belt wheel, is installed together, and during for belt driver, have automatic regulating load torque and rotating speed functions, and belt wheel is conveniently replaced.
The accompanying drawing explanation
12, the total accompanying drawing of the present invention, wherein:
Fig. 1 is adjustable-speed magnetic coupling assembling schematic diagram of the present invention;
Fig. 2 is magnetic coupling of the present invention assembling schematic diagram need not speed governing the time;
Fig. 3 is the longer time assembling schematic diagram of adjustable-speed magnetic coupling axial distance of the present invention;
Fig. 4 be adjustable-speed magnetic coupling of the present invention for the belt wheel adapter time assembling schematic diagram;
Fig. 5 is the assembling schematic diagram of the present invention during for the belt wheel adapter and without speed governing;
Fig. 6 is the permanent-magnetic outer rotor assembling schematic diagram of permanent magnet while adopting layout radially;
Permanent-magnetic outer rotor assembling schematic diagram when Fig. 7 is the tangential layout of permanent magnet employing;
Fig. 8 is the cage modle internal rotor assembling schematic diagram with spline housing;
Fig. 9 is the assembling schematic diagram that mechanical adjustable speed drive is fixed on prime mover;
Figure 10 is governing system control structure sketch;
Figure 11 is that the permanent-magnetic outer rotor assembly can move axially and mechanical adjustable speed drive is fixed on the schematic diagram of mechanism near the platform base of prime mover;
Figure 12 is that the cage modle internal rotor can move axially and mechanical adjustable speed drive is fixed on the schematic diagram of mechanism near the platform base of prime mover;
Figure 13 be magnetic coupling of the present invention need not speed governing and belt wheel be arranged on the assembling schematic diagram of output;
Figure 14 is the assembling schematic diagram that adjustable-speed magnetic coupling of the present invention and belt wheel are arranged on output.
in figure: 1, power input shaft, 2, connecting flange, 3, the permanent-magnetic outer rotor assembly, 4, the cage modle internal rotor, 5, power output shaft, 6, mechanical adjustable speed drive, 7, prime mover power output shaft, 8, bearing, 9, fin, 10, output flange, 11, fan A, 12, front end bearing block, 13, the rear end bearing seat, 14, splined sleeve, 15, belt wheel, 16, front end housing, 17, yoke, 18, permanent magnet A, 19, permanent magnet B, 20, curable cohesive material, 21, permanent magnet, 22, interior magnetic isolation plate, 23, outer magnetic isolation plate, 24, locating piece, 25, fan B, 26, dynamical element, 27, connecting plate, 28, supporting bracket, 29, catch bar, 30, briquetting, 31, fork, 32, movable pulley, 33, bearing holder (housing, cover), 34, splined sleeve, 35, connecting rod, 36, rolling bearing, 37, the fulcrum bearing, 38, prime mover, 39, load, 40, magnetic coupling, 41, sample circuit, 42, central processing unit, 43, control and the display operation platform.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Basic structure of the present invention is as shown in Figure 1: prime mover power output shaft 7 connects the power input shaft 1 that power torque is passed to magnetic coupling by key, power input shaft 1 is external splines type structure, utilize spline joint that power torque is passed to connecting flange 2 and permanent-magnetic outer rotor assembly 3, permanent-magnetic outer rotor assembly 3 is synchronizeed rotation with prime mover power output shaft 7.Between cage modle internal rotor 4 outer surfaces and permanent-magnetic outer rotor assembly 3 inner surfaces, there is even air gap.Rotation due to permanent-magnetic outer rotor assembly 3, in air gap, produce rotating magnetic field, and produce induced current in the sliver in cage modle internal rotor 4, utilize Lorentz force in magnetic field to drive 4 rotations of cage modle internal rotor, and then realize the transmission of torque of permanent-magnetic outer rotor assembly 3 to cage modle internal rotor 4, power output shaft 5 is connected with cage modle internal rotor 4 by key connection or drawing method, and by output flange 10, moment of torsion is passed to load.
For guaranteeing that permanent-magnetic outer rotor assembly 3 and the concentricity of cage modle internal rotor 4 are the uniformity of air-gap field, can utilize bearing 8 to realize the radial location of power output shaft 5 and power input shaft 1.By mechanical adjustable speed drive 6, drive connecting flange 2 and axially move with the external splines of permanent-magnetic outer rotor assembly 3 along power input shaft 1, to change the air gap contact area.Outside at the sub-assembly 3 of permanent magnetism unofficial biography can be set with fin 9, to increase the area of dissipation of magnetic coupling; The one end fan A11 that also can keep cage rotor, under rotation status, increase the heat-sinking capability of coupler.
Similar to asynchronous motor magnetic field operation principle, magnetic field induction effect due to air gap, between cage modle internal rotor 4 and permanent-magnetic outer rotor assembly 3, there is slip, this slip size except with load mutually outside the Pass, also depend on air gap area, namely under the effect of mechanical adjustable speed drive 6, permanent-magnetic outer rotor assembly 3 is axially moved, to change the air gap contact area of permanent-magnetic outer rotor assembly 3 and cage modle internal rotor 4, thus the regulating rotary extent, the rotating speed of control cage modle internal rotor 4 and power output shaft 5.
As shown in fig. 1, while by mechanical adjustable speed drive 6 drive connecting flanges 2, with permanent-magnetic outer rotor assembly 3, moving vertically, can change the air-gap flux contact area of permanent-magnetic outer rotor assembly 3 and cage modle internal rotor 4, and then change slip between the two, realize the stepless speed regulation of power output shaft 5.
In addition, in start-up course, also can be by the rea adjusting of air-gap flux to smaller value, after electric motor starting reaches steady operational status, utilize mechanical adjustable speed drive 6 progressively to increase the area of air-gap flux, realize that the light load of load starts, then progressively increase to the operating state of rated power.
When if load is regulated without speed, can adopt magnetic coupling structure as shown in Figure 2.Being connected by key with connecting flange 2 of prime mover power output shaft 7 this moment, to permanent-magnetic outer rotor assembly 3, by the air-gap field effect, drive 4 rotations of cage modle internal rotor by transmission of torque, and the mode by compacting or key connection by transmission of torque to power output shaft 5.This structure of the present invention does not possess speed-regulating function, be applicable to the load detent torque large, and large operational environment fluctuates, air-gap field effect by magnetic coupling, can effectively reduce starting current and the fluctuation of load impact on current of electric, make motor can obtain larger detent torque, saves energy, and reduce the impact of the fluctuation of load to electrical network, extend motor useful life.
If, when magnetic coupling makes its axial length longer because of the air gap adjusting, can adopt magnetic coupling structure as shown in Figure 3.Power input shaft 1 is slender axles, and connecting flange 2 can be done long-distance axial along the spline on power input shaft 1 with permanent-magnetic outer rotor assembly 3 and move, and realizes large-scale speed governing, and power output shaft 5 utilizes bearing 8 to guarantee concentricity with power input shaft 1.Two ends can adopt front end bearing block 12 and rear end bearing seat 13 to support.Its mechanical adjustable speed drive 6 can adopt structure as shown in figure 11, and by the fork horizontal positioned, position of the fulcrum is parallel with magnetic coupling.
when if magnetic coupling is used for the belt wheel adapter and needs speed governing, can adopt structure as shown in Figure 4, power input shaft 1 is contained on prime mover power output shaft 7 by the key adapter sleeve, the other end uses the spline form by transmission of torque splined sleeve 14, splined sleeve 14 is compressed in cage modle internal rotor 4 endoporus in the mode of interference fit, cage modle internal rotor 4 drives 3 rotations of permanent-magnetic outer rotor assembly by the coupling of air gap, and by connecting flange 2 by transmission of torque to belt wheel 15, belt wheel 15 is sleeved on connecting flange 2 outsides, adopt key connected mode transmitting torque, utilize gland 16 restriction belt wheels 15 to move axially, belt wheel 15 utilize belt by transmission of torque to load, between connecting flange 2 and power input shaft 1, adopt bearing 8 location, and rotation status is isolated.At power input shaft 1 other end, placing rear end bearing seat 13 is supported.By gland 16 dismountings, can change belt wheel 15 according to the different requirement of gearratio.Mechanical adjustable speed drive 6 can be arranged on splined sleeve 14, and its vertical view as shown in figure 12, by the fork effect, drives cage modle internal rotor 4 and axially moves, to regulate air gap area.
If magnetic coupling is for the belt wheel adapter and during without speed governing, can adopt structure as shown in Figure 5, power input shaft 1 is contained on prime mover power output shaft 7 by the key adapter sleeve, the other end adopt method that compacting or key connect by transmission of torque on cage modle internal rotor 4, the moment of torsion transmittance process is identical with Fig. 4, can need to change the belt wheel of different-diameter according to real work.
In the present invention in the permanent-magnetic outer rotor assembly layout type of permanent magnet adopt radially layout or tangential two kinds of modes of layout; While adopting radially layout type, as shown in Figure 6, permanent-magnetic outer rotor assembly 3 comprises yoke 17 and permanent magnet A18 and permanent magnet B19; Permanent magnet A18 and permanent magnet B19 are a watt type structure, and its arc-shaped surface is inside, and magnetizing direction is opposite, even circumferential layout along yoke 17, be staggered, and utilize each permanent magnet side clearance of curable cohesive material 20 uniform fillings, to form complete permanent magnet internal circular surfaces; While adopting tangential layout type, as shown in Figure 7, the permanent-magnetic outer rotor assembly comprises yoke 17, permanent magnet 21, interior magnetic isolation plate 22, outer magnetic isolation plate 23 and locating piece 24, described permanent magnet 21 is rectangular structure, along the even circumferential layout, pole orientation is relative along the pole orientation of tangent to periphery direction, adjacent permanent magnet; Described permanent magnet locating piece 24 is the sector structure of permeability magnetic material, and is fixed in yoke 17 inner surfaces with welding manner.
As shown in Figure 8, the cage modle inner rotor shaft can all keep or all removes or keep an end according to the heat radiation situation to the fan A11 at two ends and fan B25.
As shown in figure 14, cage modle internal rotor 4 inside have been set with splined sleeve 14, and power output shaft 5 is the external splines structure, and cage modle internal rotor 4 can axially move along power output shaft 5 under the effect of mechanical adjustable speed drive 6 with splined sleeve 14, realizes stepless speed regulation.
Mechanical adjustable speed drive of the present invention such as Fig. 9, Figure 11 and shown in Figure 12, adopt the lever operation principle, using hydraulic cylinder, cylinder, stepping motor as power executive component 26, by connecting plate 27, be fixed on supporting bracket 28, drive fork 31, take the fraising on fulcrum bearing 37 as centre swinging, and then fork 31 is by connecting rod 35, drag bearing holder (housing, cover) 33, rolling bearing 36 and spline housing 34 axially move.Scroll wheel 32, under the effect of catch bar 29, can slide along the groove on fork 31.The two ends of connecting rod 35 are hinged, free to rotate with fork 31 and bearing holder (housing, cover) 33 respectively.Spline housing 34 adopts internal spline structure.
For needs, automatically regulate the operational environment of magnetic coupling air-gap flux area (being automatic speed regulation), can adopt control system as shown in figure 10, prime mover 38 is by magnetic coupling 40 band dynamic load 39 rotary works, required load parameter, by sample circuit 41, change the signal of telecommunication into as rotating speed, pressure, lift, time etc., feed back to central processing unit 42, by central processing unit 42 after computing, control the air-gap flux contact area that mechanical adjustable speed drive 6 changes magnetic coupling, reached the rotating speed of control load 39 and the purpose of power output.Control with display operation platform 43 and can set the inner parameter of central processing unit 42, and can with forms such as charts, show controlling feedback parameter.
Claims (10)
1. a magnetic coupling, is characterized in that: comprise power input shaft (1), connecting flange (2), permanent-magnetic outer rotor assembly (3), cage modle internal rotor (4), power output shaft (5) and mechanical adjustable speed drive (6); Described permanent-magnetic outer rotor assembly (3) is sleeved on the outside of cage modle internal rotor (4), between the two, has even air gap; Described permanent-magnetic outer rotor assembly (3) is connected with power input shaft (1) by the internal spline in connecting flange (2), it is upper that cage modle internal rotor (4) is installed on power output shaft (5) by key connected mode or interference fit, and power output shaft (5) is connected with load (39) by output flange (10); Mechanical adjustable speed drive (6) is sleeved on connecting flange (2), utilize lever principle to drag connecting flange (2) and move axially with permanent-magnetic outer rotor assembly (3), to regulate the axial air-gap area between permanent-magnetic outer rotor assembly (3) and cage modle internal rotor (4);
In described permanent-magnetic outer rotor assembly (3), permanent magnet adopts radially layout or tangential two kinds of modes of layout; While adopting radially layout type, permanent-magnetic outer rotor assembly (3) comprises yoke (17) and permanent magnet A(18) with permanent magnet B(19); Permanent magnet A(18) with permanent magnet B(19) be a watt type structure, its arc-shaped surface is inside, and magnetizing direction is opposite, along the even circumferential layout of yoke (17), magnetic pole is staggered in the circumferential direction of the circle, and utilizes each permanent magnet side clearance of curable cohesive material (20) uniform filling; While adopting tangential layout type, permanent-magnetic outer rotor assembly (3) comprises yoke (17), permanent magnet (21), interior magnetic isolation plate (22), outer magnetic isolation plate (23) and locating piece (24), described permanent magnet (21) is rectangular structure, along the even circumferential layout, when pole orientation was installed along tangent to periphery direction, adjacent permanent magnet (21), pole orientation was relative; Described permanent magnet locating piece (24) is the sector structure of permeability magnetic material, and is fixed in yoke (17) inner surface with welding manner;
The cylindrical suit aluminum thermal fin (9) of described permanent-magnetic outer rotor assembly (3), in order to heat radiation;
Described cage modle internal rotor (4) directly adopts the cage rotor iron core of asynchronous machine, or the employing structure similar to the asychronous dynamo cage rotor core, and utilize the cage rotor stalk to dispel the heat to the cast aluminium fan at two ends, or only keep a fan or remove the fan at two ends; Described sleeve (14) is compressed in the endoporus unshakable in one's determination of cage modle internal rotor (4) by key or interference mode;
In described permanent-magnetic outer rotor assembly (3), the magnetic pole logarithm p of permanent magnet by formula
Choose, meeting f
cUnder the prerequisite of minimum value, p chooses maximum as far as possible; In following formula, f
cFor the torque ripple factor; P is the permanent magnet pole logarithm; n
sFor cage-type rotor sliver number; N
cFor p and n
sLeast common multiple; f
cChoice criteria be the minimum value that meets following formula;
Described mechanical adjustable speed drive (6) is planar linkage mechanism, comprise dynamical element (26), connecting plate (27), supporting bracket (28), catch bar (29), briquetting (30), fork (31), movable pulley (32), bearing holder (housing, cover) (33), splined sleeve (34), connecting rod (35), rolling bearing (36), fulcrum bearing (37); Dynamical element (26) links by connecting plate (27) and supporting bracket (28), and supporting bracket (28) is fixed near the platform base prime mover (38) or prime mover (38), and dynamical element (26) drives catch bar (29) and moves vertically; Fork (31) is hinged with fulcrum bearing (37), drives connecting rod (35) motion; Described fork (31) utilizes bolt to be connected with briquetting (30), and fork is driven gathering sill on (31); Described pulley is connected with the end of catch bar (29), and in the embedding gathering sill, during catch bar (29) motion, movable pulley (32) rolls along the gathering sill on fork (31), promotes fork (31) and rotates around the hinged place of fulcrum bearing (37), drives connecting rod (35) motion; Described connecting rod (35) one ends and bearing holder (housing, cover) (33) are hinged, and the other end and fork (31) are hinged; Bearing holder (housing, cover) (33) links by bearing and splined sleeve (34), when connecting rod (35) is mobile, drives splined sleeve (34) and does axial motion, to change the axial area of magnetic coupling air-gap field;
The dynamical element (26) of described mechanical adjustable speed drive (6) adopts stepping motor or cylinder or hydraulic cylinder, while adopting stepping motor, utilizes ball-screw or worm-and-wheel gear to realize axial motion;
Described mechanical adjustable speed drive (6) has manually and automatically controlled two kinds of control modes, to realize the Stroke Control of catch bar (29).
2. a kind of magnetic coupling according to claim 1, it is characterized in that: described permanent-magnetic outer rotor assembly (3) is connected with prime mover power output shaft (7) by the key in connecting flange (2), and be connected with load (39) by the output flange (10) on power output shaft (5), to adapt to the not requirement of needs speed adjusting of load (39).
3. a kind of magnetic coupling according to claim 1, it is characterized in that: described power input shaft (1) adopts respectively front end bearing block (12) and rear end bearing seat (13) to support with the both ends of power output shaft (5), to adapt to the requirement that the axial displacement adjustable range is long.
4. a kind of magnetic coupling according to claim 1, it is characterized in that: the splined hole of described cage modle internal rotor (4) by sleeve (14) is connected with power input shaft (1), permanent-magnetic outer rotor assembly (3) and connecting flange (2) by transmission of torque to belt wheel (15); Mechanical adjustable speed drive (6) is arranged on sleeve (14) outside of cage modle internal rotor (4), drives cage modle internal rotor (4) and moves axially, and to be adapted to belt wheel (15), needs the requirement of speed governing.
5. a kind of magnetic coupling according to claim 1, it is characterized in that: described cage modle internal rotor (4) is assemblied on power input shaft (1) by the interference mode, by permanent-magnetic outer rotor assembly (3) and connecting flange (2) by transmission of torque to belt wheel (15), during during for belt wheel (15) adapter and without speed governing.
6. a kind of magnetic coupling according to claim 1 is characterized in that: described power input shaft (1) is the male splined shaft structure, by spline joint and connecting flange (2), is set in together; Power input shaft (1) endoporus one end is connected with key with prime mover power output shaft (7), and the endoporus other end is installed bearing (8), realizes the radial location with power output shaft (5).
7. a kind of magnetic coupling according to claim 1, it is characterized in that: described power input shaft (1) is the multidiameter structure, one end directly links by key or other connecting mode and prime mover power output shaft (7), the other end links by the sleeve (14) in spline and cage modle internal rotor (4), utilize spline joint by transmission of torque to cage modle internal rotor (4); The cylindrical of described power input shaft (1) is sleeved on bearing (8); Permanent-magnetic outer rotor assembly (3) is connected with belt wheel (15) by the key connection of connecting flange (2); Connecting flange (2) is sleeved on the outside of bearing (8), for belt wheel (15) while needing speed governing.
8. a kind of magnetic coupling according to claim 1, it is characterized in that: described power input shaft (1) is the ladder optical axis, one end directly links by key and prime mover power output shaft (7), and the other end links by flat key or interference fit and cage modle internal rotor (4); It is upper that described power input shaft (1) is sleeved on bearing (8), and link by the key connecting mode with prime mover power output shaft (7); While being used for belt wheel (15) without speed governing.
9. a kind of magnetic coupling according to claim 1, it is characterized in that: described belt wheel (15) adopts the key connecting mode to link with connecting flange (2), and utilize gland (16) to realize axial restraint, according to load (39) operating mode, change the belt wheel (15) of different-diameter.
10. a kind of magnetic coupling according to claim 1, is characterized in that: when belt wheel (15) is installed on the magnetic coupling output, adopt rear end bearing seat (13) as supporting; Belt wheel (15) is contained in power output shaft (5) outside by the key adapter sleeve; When the needs speed governing, power output shaft (5) is the male splined shaft structure, and mechanical adjustable speed drive (6) is arranged on sleeve (14) outside.
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| CN201310340277.4A CN103401398B (en) | 2013-08-06 | 2013-08-06 | A kind of magnetic coupling |
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| CN201310340277.4A CN103401398B (en) | 2013-08-06 | 2013-08-06 | A kind of magnetic coupling |
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| CN103401398B CN103401398B (en) | 2016-02-10 |
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| CN104653414A (en) * | 2013-11-22 | 2015-05-27 | 安徽顺然新能源有限公司 | Variable-coupling ultralow-wind-speed-started wind driven generator |
| CN104767322A (en) * | 2015-03-31 | 2015-07-08 | 瑞昌市森奥达科技有限公司 | Motor speed regulation device for controlling rotating speed by regulating magnetic force lines |
| CN104868695A (en) * | 2015-05-14 | 2015-08-26 | 李志伟 | Manual speed-adjustment permanent-magnet coupler |
| CN104935115A (en) * | 2015-07-13 | 2015-09-23 | 汪景营 | Moving rotor power regulation torque conversion motor |
| WO2015184565A1 (en) * | 2014-06-04 | 2015-12-10 | 李启飞 | Electric speed regulation cylinder-type magnetic coupler having ball-screw |
| CN105889455A (en) * | 2014-08-23 | 2016-08-24 | 李启飞 | TF type ballscrew electric speed regulation cylinder type magnetic force coupler |
| CN105990990A (en) * | 2015-02-03 | 2016-10-05 | 李启飞 | 521-type ball-screw electric speed regulation disk-type magnetic coupler |
| CN105990991A (en) * | 2015-02-03 | 2016-10-05 | 李启飞 | T501/3-type ball-screw electric speed regulation cylinder-type magnetic coupler |
| CN106712455A (en) * | 2017-01-20 | 2017-05-24 | 大连和平鸽智能技术有限公司 | Dedicated electromagnetic torque-variable speed adjuster for oil pumping unit |
| CN106877626A (en) * | 2017-04-18 | 2017-06-20 | 南京迪瓦机械制造有限公司 | A kind of band air-cooled speed-regulating type magnetic coupler of pulley governor motion |
| CN107078624A (en) * | 2014-06-04 | 2017-08-18 | 李启飞 | F type ball-screw electric speed regulation disc type magnetic couplers |
| CN107147273A (en) * | 2016-03-01 | 2017-09-08 | 李启飞 | Lead screw pivoting support combined speed regulating cartridge type magnetic coupling |
| CN110808676A (en) * | 2019-11-07 | 2020-02-18 | 北京交通大学 | Energy-saving magnetic intelligent speed regulation coupling |
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| CN104653414A (en) * | 2013-11-22 | 2015-05-27 | 安徽顺然新能源有限公司 | Variable-coupling ultralow-wind-speed-started wind driven generator |
| WO2015184565A1 (en) * | 2014-06-04 | 2015-12-10 | 李启飞 | Electric speed regulation cylinder-type magnetic coupler having ball-screw |
| CN107078624A (en) * | 2014-06-04 | 2017-08-18 | 李启飞 | F type ball-screw electric speed regulation disc type magnetic couplers |
| CN106416029A (en) * | 2014-06-04 | 2017-02-15 | 李启飞 | Electric speed regulation cylinder-type magnetic coupler having ball-screw |
| CN105889455A (en) * | 2014-08-23 | 2016-08-24 | 李启飞 | TF type ballscrew electric speed regulation cylinder type magnetic force coupler |
| CN105990991A (en) * | 2015-02-03 | 2016-10-05 | 李启飞 | T501/3-type ball-screw electric speed regulation cylinder-type magnetic coupler |
| CN105990990A (en) * | 2015-02-03 | 2016-10-05 | 李启飞 | 521-type ball-screw electric speed regulation disk-type magnetic coupler |
| CN104767322B (en) * | 2015-03-31 | 2015-11-18 | 瑞昌市森奥达科技有限公司 | A kind of motor speed control device being controlled rotating speed by the adjustment magnetic line of force |
| CN104767322A (en) * | 2015-03-31 | 2015-07-08 | 瑞昌市森奥达科技有限公司 | Motor speed regulation device for controlling rotating speed by regulating magnetic force lines |
| CN104868695A (en) * | 2015-05-14 | 2015-08-26 | 李志伟 | Manual speed-adjustment permanent-magnet coupler |
| CN104868695B (en) * | 2015-05-14 | 2017-11-03 | 李志伟 | It is a kind of can manual governing permanent magnetic coupling |
| CN104935115A (en) * | 2015-07-13 | 2015-09-23 | 汪景营 | Moving rotor power regulation torque conversion motor |
| CN107147273A (en) * | 2016-03-01 | 2017-09-08 | 李启飞 | Lead screw pivoting support combined speed regulating cartridge type magnetic coupling |
| CN106712455A (en) * | 2017-01-20 | 2017-05-24 | 大连和平鸽智能技术有限公司 | Dedicated electromagnetic torque-variable speed adjuster for oil pumping unit |
| CN106877626A (en) * | 2017-04-18 | 2017-06-20 | 南京迪瓦机械制造有限公司 | A kind of band air-cooled speed-regulating type magnetic coupler of pulley governor motion |
| CN106877626B (en) * | 2017-04-18 | 2023-07-04 | 南京迪瓦永磁科技有限公司 | Air-cooled speed regulation type magnetic coupler with pulley adjusting mechanism |
| CN110808676A (en) * | 2019-11-07 | 2020-02-18 | 北京交通大学 | Energy-saving magnetic intelligent speed regulation coupling |
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