CN105703603A - Permanent magnet coupling speed regulation apparatus with adjustable axial meshed area - Google Patents
Permanent magnet coupling speed regulation apparatus with adjustable axial meshed area Download PDFInfo
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- CN105703603A CN105703603A CN201610226415.XA CN201610226415A CN105703603A CN 105703603 A CN105703603 A CN 105703603A CN 201610226415 A CN201610226415 A CN 201610226415A CN 105703603 A CN105703603 A CN 105703603A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
- H02K49/10—Dynamo-electric clutches; Dynamo-electric brakes of the permanent-magnet type
- H02K49/102—Magnetic gearings, i.e. assembly of gears, linear or rotary, by which motion is magnetically transferred without physical contact
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Abstract
The invention provides a permanent magnet coupling speed regulation apparatus with an adjustable axial meshed area. The permanent magnet coupling speed regulation apparatus comprises a magnetic conductive rotor assembly, a permanent magnet rotor assembly, a bearing base assembly, a drive screw assembly, a gear box assembly and a speed regulation output shaft, wherein an inner cylinder is formed at one end of the magnetic conductive rotor assembly; the permanent magnet rotor assembly can extend into the inner cylinder; a fixed air gap is formed between the outer wall surface of the permanent magnet rotor assembly and the inner cylinder wall surface of the magnetic conductive rotor assembly; the permanent magnet rotor assembly is mounted on the bearing base assembly, capable of circumferentially rotating relative to the bearing base assembly and capable of synchronously and axially moving along with the bearing base assembly; one end of the drive screw assembly is fixedly connected with the bearing base assembly while the other end of the drive screw assembly is in threaded connection with the gear box assembly; the gear box assembly can drive the drive screw assembly to axially move; and the front part of the speed regulation output shaft is connected with the permanent magnet rotor assembly through a spline while the lower part of the speed regulation output shaft is mounted on the gear box assembly. The permanent magnet coupling speed regulation apparatus provided by the invention can carry out stepless smooth speed regulation according to loads, so that the permanent magnet coupling speed regulation apparatus is high in market prospects.
Description
Technical field
The present invention relates to coupling speed adjusting technique field, be specifically related to a kind of axially area of contact adjustment type permanent magnet coupling arrangements for speed regulation。
Background technology
China is energy consumption big country, and energy reserves is not enough, and energy utilization rate is relatively low, the energy-saving and cost-reducing emphasis having become whole society's concern。Blower fan, water pump load are the common equipments having a large capacity and a wide range, and its power consumption accounts for very big ratio in alternating current generator total energy consumption。The power consumption of electric motor system accounts for the 60% of whole nation power consumption, wherein blower fan electricity consumption accounts for the 10.4% of whole nation total electricity consumption, pump class motor accounts for 20.9%, compressor accounts for 9.4%, and air conditioner refrigerating device accounts for 6%, and blower fan, pump class power consumption are very huge, the outmoded backwardness of driving equipment yet with blower fan, water pump etc., operational efficiency is lower by 10%～20% than Foreign Advanced Lerel, and annual waste electric energy is extremely serious, has very big energy conservation potential。
The power save mode that speed governing is best by being known as motor in the world, if blower fan, load of the pumps are adopted speed regulating control, its economize on electricity is up to 20%～70%, not only power savings is notable, and for meeting the requirement of production technology, ensureing the quality of product, serve very important effect, economic benefit is very notable。In generation and application that this maximum breakthrough is fluid coupling and converter, it greatly improves the Optimum utilization of productivity ratio and the energy, make this theory of energy-conserving and environment-protective be fully reflected in the middle of the application of engineering machinery。
Fluid coupling is as a kind of common speed control device, utilizing the rotating speed of liquid medium transmission motor input during work, its axle head that is actively entered is connected with motor driving shaft, and driven output shaft end couples with load axle head, by regulating the pressure of liquid medium, change the rotating speed of output shaft。In the ideal situation, when pressure tends to infinity, output speed is equal with input speed, is equivalent to positive coupling；When the pressure decreases, output speed reduces accordingly, changes pressure medium continuously, and output speed can obtain the stepless time adjustment lower than input speed, its speed-regulating range width, and simple in construction, and failure rate is low is low to required precision, has certain energy-saving effect。But, ripe gradually at fluid coupling product and after being widely applied, its inferior position also manifests gradually, and as energy conversion efficiency is low, hydraulic oil to regularly replace, and adjusting speed accuracy is low。Afterwards along with the development of the fast development of microprocessing and VVVF speed regulation, at the middle and late stage eighties in 20th century, the converter technique of developed country starts practical gradually, and this new product of converter is known and extensive use gradually。
Converter is by changing motor working power Frequency Patterns, control ac motor, thus changing the electric control appliance of motor output, it is based on converter technique and microelectric technique, being changed the frequency of power supply during work by converter, reaching to change the purpose of supply voltage, thus being supplied to the supply voltage that motor is practically necessary, and then reach purpose energy-conservation, speed governing, its performance is better than fluid coupling。But, along with converter is applied in a device on a large scale, its deficiency and inferior position also highlight gradually, and namely the interference of converter is the inferior position that it is maximum。Frequency converter interference mainly has: one is be commonly used the non-linear rectifying device such as IGCT or commutation diode in converter, electrical network will be produced Conduction Interference by the harmonic wave of its generation, (voltage distortion rate THDV represents to cause line voltage distortion, converter produces the THDV that causes of harmonic wave about 10～40%), affect the power supply quality of electrical network；Two is that the output part of converter is generally adopted by the switching devices such as IGBT, will produce stronger electromagnetic interference on the output line, affect the normal operation of periphery electrical equipment while output energy。It addition, in being rigidly connected of motor and load, owing to alignment is bad and cause mechanical stability against short circuit and safety issue, invariably require to it has been proposed that the more excellent scheme shortcoming to make up existing converter。
Permanent-magnet speed governor is through the drive apparatus of air gap transmission torque, without being mechanically connected between motor and load, magnetic conductive disk cutting magnetic line in high-intensity magnetic field produced by the permanent magnetic disk equipped with powerful rare-earth magnet is driven when motor rotates, thus producing vortex flow in magnetic conductive disk, this vortex flow produces anti-induction magnetic field on magnetic conductive disk, it is achieved thereby that the torque transmission between motor and load, it is thus achieved that scalable, can control, repeatably load speed, it is achieved the adjustment of load speed。But existing permanent-magnet speed governor is essentially all air gap adjustment type permanent-magnet speed governor, the adjustment of rotating speed is namely realized by adjusting the air-gap separation between magnetic conduction rotor and p-m rotor, as shown in Figure 1, the guiding mechanism of this air-gap separation is complex, and the adjustment of rotational speed precision carried out based on air-gap separation adjustment is relatively low。It is therefore desirable to mode of speed regulation and performance thereof to existing permanent-magnet speed governor improve, this is significant in speed governing actuation techniques field。
Summary of the invention
The present invention is directed to that the energy conversion efficiency of current all kinds of arrangements for speed regulation is not high, system reliability is not enough, technology require high, to shortcomings such as environmental requirement are strict, a kind of axially area of contact adjustment type permanent magnet coupling arrangements for speed regulation of pioneering proposition, the area of contact of interaction is changed by the axial regulating mechanism adjustment permanent magnet rotor component created and magnetic conduction rotor assembly relative position on axis horizontal direction, and then change the torque of transmission between magnetic conduction rotor assembly and permanent magnet rotor component, realize the conversion to load speed, reach variable speed energy saving purpose。Permanent magnet coupling arrangements for speed regulation provided by the present invention are not when changing motor running speed, the speed adjustment without dead smooth can be carried out according to the change of load at the outfan of motor, not only energy-efficient, environmental protection, and speed regulation process does not result in current harmonics and electromagnetic interference etc. and pollutes, and contactless between load with motor it is connected, motor can be protected in the event of overloading injury-free, can be widely applied for generating, metallurgical, petrochemical industry, mining, papermaking, supply water, water utilities, cement, the centrifugal load of the industries such as irrigation, there is wide market application foreground。
This invention address that the technical scheme that above-mentioned technical problem is taked is as follows:
A kind of axially area of contact adjustment type permanent magnet coupling arrangements for speed regulation, including: magnetic conduction rotor assembly 100, permanent magnet rotor component 200, bearing block assembly 300, drive screw assembly 400, gear case assembly 500 and speed governing output shaft, one end of described magnetic conduction rotor assembly 100 connects power input mechanism, the other end of described magnetic conduction rotor assembly 100 is formed as inner tube structure, described permanent magnet rotor component 200 can extend in the inner tube structure of described magnetic conduction rotor assembly 100, and between outer side surface and the inner core wall of described magnetic conduction rotor assembly 100 of described permanent magnet rotor component 200, there is fixing radial air gap, described permanent magnet rotor component 200 is installed on described bearing block assembly 300, and described permanent magnet rotor component 200 can circumferentially rotate relative to described bearing block assembly 300, and synchronization can move axially with described bearing block assembly 300, one end of described drive screw assembly 400 is fixedly connected on described bearing block assembly 300, the other end is threadedly connected to described gear case assembly 500, described gear case assembly 500 can drive described drive screw assembly 400 to move axially, the front portion of described speed governing output shaft is connected to described permanent magnet rotor component 200 by spline, the rear portion of described speed governing output shaft is installed on described gear case assembly 500 by bearing。
Further according to axial area of contact adjustment type permanent magnet coupling arrangements for speed regulation of the present invention, wherein said gear case assembly 500 includes gear box casing 13, wheel fixed disk 22, planetary gear 25, sun gear 26, adjustable side conical gear 14, adjustable side power shaft 15, driving gear 10 and driven bevel gear 12, described fixed disk 22 of taking turns is installed on the front opening of described gear box casing 13, described planetary gear 25, sun gear 26 and driving gear 10 are installed on by bearing described takes turns on fixed disk 22, and described planetary gear 25 is engaged on described sun gear 26, described driving gear 10 is engaged on described sun gear 26, described driven bevel gear 12 is connected on described driving gear 10, described adjustable side conical gear 14 is connected on described adjustable side power shaft 15, described driven bevel gear 12 is engaged in described adjustable side conical gear 14, the rear portion of described speed governing output shaft is installed on by bearing on described sun gear 26 and described gear box casing 13, the other end of described drive screw assembly 400 is threadedly connected to described planetary gear 25。
Further according to axial area of contact adjustment type permanent magnet coupling arrangements for speed regulation of the present invention, wherein said planetary gear 25 includes three, and it is uniformly distributed circumferentially in the periphery of described sun gear 26, the central authorities of each planetary gear 25 offer screwed hole, described driving gear 10 is disposed therein between two planetary gears, described driven bevel gear 12 is fixedly connected on described driving gear 10 by flat key, described adjustable side conical gear 14 is fixedly connected on described adjustable side power shaft 15 by flat key, described drive screw assembly 400 includes three drive screws 27, the outer wall of every drive screw 27 is each formed with external screw thread, and one end of every drive screw 27 is fixedly connected with in described bearing block assembly 300, the other end of every drive screw 27 is threadedly connected in the screwed hole of a planetary gear 26 of correspondence。
Further according to axial area of contact adjustment type permanent magnet coupling arrangements for speed regulation of the present invention, wherein said adjustable side power shaft 15 includes manually end power shaft 38 and automatic end power shaft 41, described adjustable side conical gear 14 includes manually end conical gear 39 and automatic end conical gear 40, described manual end conical gear 39 is fixedly connected on described manual end power shaft 38 by flat key, described manual end conical gear 39 is engaged in the side of described driven bevel gear 12, described manual end power shaft 38 is arranged on described gear box casing 13 by bearing, described automatic end conical gear 40 is fixedly connected on described automatic end power shaft 41 by flat key, described automatic end conical gear 40 is engaged in the opposite side of described driven bevel gear 12, described automatic end power shaft 41 is arranged on described gear box casing 13 by bearing。
Further according to axial area of contact adjustment type permanent magnet coupling arrangements for speed regulation of the present invention, wherein said gear case assembly 500 also includes handwheel 33, hand wheel shaft 34, handwheel bearing 35, motor 46, motor bearing 45 and axle sleeve type shaft coupling 44, described handwheel 33 is arranged on described hand wheel shaft 34, described hand wheel shaft 34 is installed on described handwheel bearing 35 by matched in clearance, described handwheel bearing 35 is fixed on described gear box casing 13, moment of torsion transmission is carried out by the recessed tooth inlay card combination of convex tooth between described hand wheel shaft 34 and described manual end power shaft 38, described motor 46 is installed on described motor bearing 45, described motor bearing 45 is fixed on described gear box casing 13, the output revolving shaft of described motor 46 is connected to described automatic end power shaft 41 by described axle sleeve type shaft coupling 44。
Further according to axial area of contact adjustment type permanent magnet coupling arrangements for speed regulation of the present invention, it is provided with the first lip-type packing between wherein said automatic end power shaft 41 and motor bearing 45, between described manual end power shaft 38 and handwheel bearing 35, is provided with the second lip-type packing。
Further according to axial area of contact adjustment type permanent magnet coupling arrangements for speed regulation of the present invention, the central authorities of wherein said sun gear 26 offer installing hole, on the rear surface of described gear box casing 13 with described installing hole just to be formed installation seal chamber, the rear portion of described speed governing output shaft seals on chamber by the installation of installing hole and described gear box casing 13 that bearing is installed on described sun gear 26, described installation annular seal space indoor are provided with mechanical oil seal 18, and the rear end of described speed governing output shaft stretches out in outside the rear wall of described gear box casing 13。
Further according to axial area of contact adjustment type permanent magnet coupling arrangements for speed regulation of the present invention, wherein also include casing cylinder 9, described casing cylinder 9 is fixedly mounted on described gear box casing, described magnetic conduction rotor assembly 100, permanent magnet rotor component 200, bearing block assembly 300 and drive screw assembly 400 are in the inside of described casing cylinder 9, described magnetic conduction rotor assembly 100 includes motor shaft adapter 1, magnetic conduction rotor matrix 2 and copper ring 3, one end of described motor shaft adapter 1 is fixedly connected on the motor output shaft as power input mechanism, the other end of described motor shaft adapter 1 is fixedly connected on described magnetic conduction rotor matrix 2, described magnetic conduction rotor matrix 2 has penetrating cylinder-like structure, described copper ring 3 is assemblied on the cylinder inner surface of magnetic conduction rotor matrix 2 by compression mode, the outer surface of described magnetic conduction rotor matrix 2 is provided with fin 32。
Further according to axial area of contact adjustment type permanent magnet coupling arrangements for speed regulation of the present invention, wherein said permanent magnet rotor component 200 includes permanent magnetism sheet 4 and p-m rotor matrix 5, described permanent magnetism sheet 4 is uniformly fixed in the circumferential lateral surface of described p-m rotor matrix 5, fixing radial air gap is formed between outer surface and the internal face of described copper ring 3 of described permanent magnetism sheet 4, described p-m rotor matrix 5 be centrally formed through hole, the internal face of described through hole is formed the spline structure axially extended, the front portion of described speed governing output shaft is formed with the spline structure axially extended, the front portion of described speed governing output shaft is connected to described p-m rotor matrix 5 by spline fitted, make the described p-m rotor matrix 5 can axially moving forward and backward along described speed governing output shaft, and described speed governing output shaft can be driven circumferentially to rotate。
Further according to axial area of contact adjustment type permanent magnet coupling arrangements for speed regulation of the present invention, wherein said bearing block assembly 300 includes bearing gland 29, deep groove ball bearing 6, bearing block 8, sealing ring and axial limiting mechanism, described bearing block 8 be centrally formed through hole, the outer wall surface of described bearing block 8 is coordinated by small-gap suture with the inner wall surface of described casing cylinder 9, described sealing ring is arranged in the groove of the outer wall surface of bearing block 8, described p-m rotor matrix 5 is arranged in the through hole of described bearing block 8 by deep groove ball bearing 6, described bearing gland 29 is fixed on described bearing block and is limited in the through hole of bearing block 8 by described deep groove ball bearing 6, the through hole inwall of described bearing block 8 is provided with described axial limiting mechanism, ensure that described bearing block 8 and described p-m rotor matrix 5 synchronization move axially by described axial limiting mechanism。
Axial area of contact adjustment type permanent magnet coupling arrangements for speed regulation of the present invention have following unique innovation and technique effect:
(1), realize controlled process to start。Axial area of contact adjustment type permanent magnet coupling arrangements for speed regulation of the present invention are by increasing the spacing of permanent magnet rotor component and magnetic conduction rotor assembly, empty load of motor can be allowed to start, after motor reaches rated speed, reduce between the two from, load stabilization is made progressively to accelerate to required rotating speed, speed is slowly risen gradually by zero, it is achieved that shock-free soft open；The impact that the problems such as the rush of current in start-up course, motor coil heating, flow sharply change cause can be substantially reduced simultaneously。
(2), high reliability, permanent magnet coupling arrangements for speed regulation of the present invention are only made up of three parts, simple structure, and itself is without power supply。Wherein the fault rate of copper dish and disk is almost nil, and the reliability of actuator determines the reliability of equipment or even system。
(3), easily install, tolerate centering error, isolate and lower vibration。Permanent magnet coupling arrangements for speed regulation of the present invention do not adopt hard mechanical connection to transmit moment of torsion because adopting air-gap separation, thus the connection required precision of motor and blower fan or water pump is substantially reduced。Except substantially not needing laser axis calibration when installing, because permanent magnet drive is not rigidly connected between motor and load, mechanical vibration and noise that connection precision causes are substantially reduced, in practice it has proved that, this connected mode, it is possible to decrease vibration about 80%。
(4), it is adapted to adverse circumstances。The material characteristic of permanent magnet coupling arrangements for speed regulation main element of the present invention and connect without rigid mechanical, high temperature, low temperature can be adapted to without the characteristic of friction speed regulating device, dirt is inflammable, explosive, power quality is poor, the adverse circumstances of various voltage and frequency level。
(5), electric harmonic and electromagnetic interference are not produced。Motor load is inductive load, and permanent magnet coupling arrangements for speed regulation are mechanical governing device, unrelated with electrical property, thus speed regulation process does not result in current harmonics and electromagnetic interference, and its power factor (PF) depends on motor itself。This power factor (PF) problem merely with the capacitor compensation cabinet in distribution system just can, do not increase extra cost。
(6), motor will not be overheated, does not also need to change and transformation motor。Permanent magnet coupling arrangements for speed regulation of the present invention are to realize speed governing by the slippage between change motor and load, say, that motor speed maintains design speed all the time, causes motor overheating thus without because motor speed declines。
(7), reduce maintenance cost, extend the system equipment life-span。Permanent magnet coupling arrangements for speed regulation of the present invention essentially non-maintaining product, only needs regularly axial-adjustment unit charging-up lubricant oil, and theoretical service life was up to 30 years。
(8), having innovated the axial regulating mechanism that permanent magnet rotor component and magnetic conduction rotor assembly area of contact is axially adjustable in special permanent magnet coupling arrangements for speed regulation of the present invention, the axial regulating mechanism created itself has following innovative characteristics:
(8-1) described axial regulating mechanism can realize rotary motion, two kinds of functions of axially-movable simultaneously, and two kinds of motions are non-interference, can be synchronously performed again；
(8-2) described axial regulating mechanism manually, automatic dual-purpose, rotate forward, reverse, under automatic control mode, can accurately regulate, axial location degree of regulation is up to 0.1mm；
(8-3) described axial regulating mechanism is pioneering employing planet circular system and screw drive structure, compact conformation, reliability are high, ensure that the stationarity of axially-movable, controllability, achieving planet circular system and the application in permanent magnetic speed-adjusting field of the screw drive structure first, this is also the innovation result that applicant pays creative work for a long time；
(8-4) namely the planetary gear in described axial regulating mechanism is drive disk assembly, is again nut member, namely transmits rotary motion, realizes again moving axially motion by screw drive simultaneously, has innovated the axially adjustable of permanent magnet rotor component and magnetic conduction rotor assembly；
(8-5) described axial regulating mechanism bottom bracket parts cylindrical and cylinder bore adopt and can move freely small-gap suture and coordinate, and install Glais ring sealing member, both ensure that the smooth-going moved axially, have solved again axial seal。
(9), the present invention proposes the permanent magnet coupling arrangements for speed regulation of a kind of brand new in a word, have can realize electrodeless stepless speed control, speed-regulating range width (up to 30%～100%), motor controlled process is started, system global reliability is high, install simple to operate and maintenance cost is low, the particular advantages such as environmentally friendly, as speed control device of future generation, can have wide market prospect。
Accompanying drawing explanation
Accompanying drawing 1 is the schematic diagram of existing air gap adjustment type permanent-magnet speed governor；
Accompanying drawing 2 and accompanying drawing 3 are the ultimate principle figure of axial area of contact adjustment type permanent magnet coupling arrangements for speed regulation of the present invention；
Accompanying drawing 4 is the stereo-resolution structure chart of axial area of contact adjustment type permanent magnet coupling arrangements for speed regulation of the present invention；
Accompanying drawing 5 is axial area of contact adjustment type permanent magnet coupling arrangements for speed regulation of the present invention sectional structure charts vertically；
Accompanying drawing 6 is the sectional structure chart along line A-A of the permanent magnet coupling arrangements for speed regulation shown in accompanying drawing 5；
In figure, the implication of each accompanying drawing labelling is as follows:
1. motor shaft adapter, 2. magnetic conduction rotor matrix, 3. copper ring, 4. permanent magnetism sheet, 5. p-m rotor matrix, 6. deep groove ball bearing, 7. Glais ring, 8. bearing block, 9. casing cylinder, 10. driving gear, 11. joint type priming cup, 12. driven bevel gear, 13. gear box casing, 14. adjustable side conical gear, 15. adjustable side power shaft, 16. oil sealing cover, 17.O shape sealing ring, 18. mechanical oil seal, 19. splined shaft, 20. deep groove ball bearing, 21. deep groove ball bearing, 22. wheel fixed disk, 23.O shape sealing ring, 24. alignment pin, 25. planetary gear, 26. sun gear, 27. drive screw, 28. holding screw, 29. bearing gland, 30. encapsulating, 31. magnetic piece fixed disk, 32. fin, 33. hands is taken turns, 34. hand wheel shaft, 35. handwheel bearing, 36. lip-type packing, 37. deep groove ball bearing, 38. manually hold power shaft, 39. manually hold conical gear, 40. automatic end conical gear, 41. automatic end power shaft, 42. deep groove ball bearing, 43. lip-type packing, 44. axle sleeve type shaft coupling, 45. motor bearing, 46. motor, 47. bleeder plug；
100. magnetic conduction rotor assembly, 200. permanent magnet rotor component, 300. bearing block assemblies, 400. drive screw assemblies, 500. gear case assemblies。
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme is described in detail, so that those skilled in the art can be more clearly understood from the present invention, but does not therefore limit the scope of the invention。
First the know-why of the present invention is described, in combination with accompanying drawing 1 to accompanying drawing 3, wherein accompanying drawing 1 is the schematic diagram of existing air gap adjustment type permanent-magnet speed governor, the adjustment of rotating speed is realized by adjusting the air-gap separation between magnetic conduction rotor and p-m rotor, the guiding mechanism of this air-gap separation is complex, and the adjustment of rotational speed precision carried out based on air-gap separation adjustment is relatively low。The present invention innovates the permanent magnet coupling arrangements for speed regulation of proposition and realizes the adjustment of rotating speed by adjusting the axial area of contact between magnetic conduction rotor and p-m rotor, as shown in accompanying drawing 2 and accompanying drawing 3, during the work of permanent magnet coupling arrangements for speed regulation, magnetic conduction rotor rotates, thus producing relative motion with p-m rotor, the super-strong magnetic line of force of permanent magnetic device will change in magnetic conduction rotor conductor and produce inducing eddy-current, the induced field produced by vortex flow will interact with permanent magnetic field, thus driving p-m rotor to rotate in the same direction along with magnetic conduction rotor, realize driven by motor load to rotate, and by regulating p-m rotor and the magnetic conduction rotor relative position in axis horizontal direction, could alter that the area of contact of both magnetic field interactions, and then change the torque of transmission between magnetic conduction rotor and p-m rotor, thus realizing the conversion of load speed, reach variable speed energy saving purpose。In concrete product structure as shown in Figure 3, p-m rotor is under controller action, when reciprocating vertically, the active area that engages each other between p-m rotor and magnetic conduction rotor changes, area of contact is more big, the action of a magnetic field is more strong, and the moment of torsion of transmission is more big, and the rotating speed driving load is more high；Area of contact reduces, and the action of a magnetic field reduces, and the moment of torsion of transmission diminishes, rotating speed reduces, and when p-m rotor and magnetic conduction rotor are completely disengaged, area of contact is zero, almost without magnetic action between p-m rotor and magnetic conduction rotor, p-m rotor rotating speed is zero, and namely load speed is zero。Propose axial area of contact adjustment type permanent magnet coupling arrangements for speed regulation based on this principle present invention, provide the product structure of this permanent magnet coupling arrangements for speed regulation more detail below。
As shown in Figure 4, the agent structure of axial area of contact adjustment type permanent magnet coupling arrangements for speed regulation of the present invention includes magnetic conduction rotor assembly 100, permanent magnet rotor component 200, bearing block assembly 300, drive screw assembly 400, gear case assembly 500, speed governing output shaft and casing cylinder 9, one end of described magnetic conduction rotor assembly 100 is fixedly connected on motor output shaft, the other end of described magnetic conduction rotor assembly 100 is formed with inner core, described permanent magnet rotor component 200 can extend in the inner core of described magnetic conduction rotor assembly 100, and the air gap (radial spacing) between permanent magnet outer wall and the inner core inwall of magnetic conduction rotor assembly 100 of described permanent magnet rotor component 200 fixes, axial overlap area (area of contact) between permanent magnet outer wall and the inner core inwall of magnetic conduction rotor assembly 100 of described permanent magnet rotor component 200 changes along with moving axially of permanent magnet rotor component 200。Permanent magnet rotor component 200 is driven to rotate (above-mentioned principal portion) by way of electromagnetic induction when motor drives magnetic conduction rotor assembly 100 to rotate, described permanent magnet rotor component 200 is connected to speed governing output shaft, the action of a magnetic field intensity between the two is adjusted by changing the area of contact between permanent magnet rotor component 200 and magnetic conduction rotor assembly 100, and then the rotating speed of adjustment permanent magnet rotor component 200, reach speed governing purpose。Described bearing block assembly 300, drive screw assembly 400 and gear case assembly 500 collectively constitute axial regulating mechanism, are used for being axially moveable permanent magnet rotor component 200, and then realize the adjustment of area of contact between permanent magnet rotor component 200 and magnetic conduction rotor assembly 100。Concrete described permanent magnet rotor component 200 is installed on described bearing block assembly 300, described permanent magnet rotor component 200 together can move vertically with bearing block assembly 300, and described permanent magnet rotor component 200 can rotate relative to bearing block assembly 300。One end of described drive screw assembly 400 is fixedly connected on described bearing block assembly 300, the other end is threadedly connected to the gear in described gear case assembly 500, by regulating the pinion rotation in gear case assembly 500, drive screw assembly 400 is pulled to move axially, and then drive permanent magnet rotor component 200 to move axially by bearing block assembly, realize the change of area of contact between permanent magnet rotor component 200 and magnetic conduction rotor assembly 100, be finally reached the purpose adjusting permanent magnet rotor component 200 rotating speed。
Permanent magnet coupling arrangements for speed regulation of the present invention are specifically described below in conjunction with accompanying drawing 5, as shown in Figure 5, described casing cylinder 9 has hollow sleeve structure, one end is mounted by means of bolts on the flange face of motor, the other end is bolted the front surface being installed on gear box casing, and between the other end of casing cylinder 9 and gearhousing surface, it is provided with O-ring seals 23, seal in order to realize the radial direction (end face) between casing cylinder 9 and gear box casing 13。It is internal that described magnetic conduction rotor assembly 100, permanent magnet rotor component 200, bearing block assembly 300, drive screw assembly 400 are mounted on described casing cylinder 9。Described magnetic conduction rotor assembly 100 includes motor shaft adapter 1, magnetic conduction rotor matrix 2 and copper ring 3, one end of described motor shaft adapter 1 is connected by screw and motor output shaft are fixing, the other end of described motor shaft adapter 1 is connected by screw is fixing with magnetic conduction rotor matrix 2, described magnetic conduction rotor matrix 2 has penetrating cylinder-like structure, described copper ring 3 is assemblied on the cylinder inner surface of magnetic conduction rotor matrix 2 by compression mode, is provided with the fin 32 of cylinder on the outer surface of magnetic conduction rotor matrix 2。Described permanent magnet rotor component 200 includes permanent magnetism sheet 4 and p-m rotor matrix 5, described permanent magnetism sheet 4 includes several, and in tile shape structure, described permanent magnetism sheet is evenly distributed on the periphery of p-m rotor matrix 5 according to NSNS layout, and be fixed by encapsulating 30 and magnetic piece fixed disk 31, described p-m rotor matrix 5 preferably has cylinder-like structure, and p-m rotor matrix 5 outer surface permanent magnetism sheet 4 is installed after can extend into the inside of described copper ring 3, fixing air gap is formed between permanent magnetism sheet 4 outer surface and copper ring inwall, ensure that both axially engage each other and mechanical contact, described air gap provides work space for the magnetic pole on permanent magnetism sheet。Described bearing block assembly 300 includes bearing gland 29, deep groove ball bearing 6, bearing block 8 and Glais ring 7, described bearing block 8 be centrally formed through hole, described bearing block 8 outer wall surface is that small-gap suture matches with the inner wall surface of casing cylinder 9, described Glais ring 7 is arranged in the outer wall surface groove of bearing block 8, the axial seal of bearing block 8 is realized by Glais ring 7, described p-m rotor matrix 5 is arranged in the center through hole of bearing block 8 by deep groove ball bearing 6, ensure that described p-m rotor matrix 5 can rotate relative to bearing block 8, described bearing gland 29 is fixed on bearing block and is limited in the center through hole of bearing block 8 by deep groove ball bearing 6, the through-hole wall of described bearing block 8 is provided with defining flange, described p-m rotor matrix is circumferentially formed with stopper slot, described defining flange embeds in described stopper slot, ensure described p-m rotor matrix can along the circumferential direction carry out in the through hole of bearing block 8 freely rotatable while, make described p-m rotor matrix 5 and bearing block 8 can carry out synchronizing moving vertically without relative motion, realize bearing block 8 drive permanent magnet rotor component 200 carry out before and after move axially。Described drive screw assembly 400 includes three drive screws 27, three drive screws 27 are uniformly distributed at circumferencial direction, the outer wall of every drive screw 27 is formed with external screw thread, and one end of every drive screw 27 passes through interference fit with described bearing block 8 and holding screw 28 is fixed and is connected, the other end is connected with the planetary gear 26 in gear case assembly 500 by screw thread。Described gear case assembly 500 includes gear box casing 13, wheel fixed disk 22, O-ring seals 23, alignment pin 24, planetary gear 25, sun gear 26, handwheel 33, hand wheel shaft 34, handwheel bearing 35, lip-type packing 36, deep groove ball bearing 37, manually end power shaft 38, manually end conical gear 39, automatic end conical gear 40, automatic end power shaft 41, deep groove ball bearing 42, lip-type packing 43, axle sleeve type shaft coupling 44, motor bearing 45, motor 46, bleeder plug 47, driving gear 10, driven bevel gear 12, oil sealing cover 16, O-ring seals 17, mechanical oil seal 18, deep groove ball bearing 20, deep groove ball bearing 21。Described fixed disk 22 of taking turns is installed on the front opening of described gear box casing 13, and make circumferentially positioned with alignment pin 24, described wheel offers some installation through holes on fixed disk 22, described sun gear 26, planetary gear 25, driving gear 10 are arranged in the described installation through hole taking turns fixed disk 22 each through deep groove ball bearing。Described planetary gear 25 includes three, and it is uniformly distributed circumferentially in the periphery of sun gear 26, and it is mutually meshing with sun gear 26, described driving gear 10 is disposed therein between two planetary gears, and it is mutually meshing with sun gear 26, drive by driving described driving gear 10 to rotate sun gear 26 to rotate, and then drive described planetary gear rotation by sun gear。Described driven bevel gear 12 is fixedly mounted on described driving gear 10 by flat key inside gear-box, and adjustable side conical gear 14 is fixed on adjustable side power shaft 15, and described adjustable side conical gear 14 is meshing on driven bevel gear 12。Concrete described adjustable side power shaft 15 includes manually end power shaft 38 and automatic end power shaft 41, described adjustable side conical gear 14 includes manually end conical gear 39 and automatic end conical gear 40, in combination with accompanying drawing 6, manually end conical gear 39 is fixedly mounted on by flat key and manually holds on power shaft 38, manually end conical gear 39 is meshing in the side of driven bevel gear 12, manually end power shaft 38 is arranged on gear box casing 13 by deep groove ball bearing 37, handwheel 33 is fixedly mounted on hand wheel shaft 34, hand wheel shaft 34 is arranged on handwheel bearing 35 by matched in clearance, handwheel bearing 35 is fixed by screws on gear box casing 13, the end face of hand wheel shaft 34 is formed with convex tooth, the end face of power shaft 38 is manually held to be formed with recessed tooth, separated with manually holding the recessed tooth of power shaft 38 end face by the convex tooth of hand wheel shaft 34 end face under normal circumstances, hand wheel shaft 34 does not transmit moment of torsion with manually end power shaft 38, when needs carry out manual adjustments, press hands wheel, thus the convex dental inlay of hand wheel shaft 34 end face is started with in the recessed tooth of moved end power shaft 38 end face, realize hand wheel shaft 34 to be connected with manually end the fixing of power shaft 38, manually hold on power shaft 38 thus the moment of torsion applied on handwheel is delivered to。It is provided with lip-type packing 36, it is ensured that manually hold the axial seal of power shaft 38 between described manual end power shaft 38 and handwheel bearing 35。Described automatic end conical gear 40 is fixedly mounted on automatic end power shaft 41 by flat key, and automatic end conical gear 40 is meshing in the opposite side of driven bevel gear 12, automatic end power shaft 41 is arranged on gear box casing 13 by deep groove ball bearing 42, motor 46 is arranged on motor bearing 45 by screw, motor bearing 45 is fixed by screws on gear box casing 13, and the output shaft of motor 46 is connected and automatic end power shaft 30 by axle sleeve type shaft coupling 44。It is provided with lip-type packing 43, it is ensured that the axial seal of automatic end power shaft 41 between described automatic end power shaft 41 and motor bearing 45。Described speed governing output shaft is splined shaft 19, described splined shaft 19 rotates and is installed on described gear box casing 13, the central authorities of concrete described sun gear 26 offer installation through hole, on the rear surface of described gear box casing 13 with described installation through hole just to be formed splined shaft 19 installation seal chamber, described splined shaft 19 seals chamber through the center through hole of sun gear 26 and the installation of gear box casing 13 rear surface, the central authorities that described splined shaft 19 is installed on described sun gear 26 by deep groove ball bearing install in through hole, and the installation sealing chamber of described gear box casing 13 it is installed on by deep groove ball bearing, described installation annular seal space indoor are provided with mechanical oil seal 18 simultaneously, in order to realize the axial seal of splined shaft 19, described oil sealing cover 16 is covered on described installation and seals on chamber, and radial direction (end face) sealing of oil sealing cover 16 is realized by O-ring seals 17, described mechanical oil seal 18 is encapsulated in described installation annular seal space indoor。The rear end of described splined shaft 19 stretches out in described oil sealing cover 16, as speed governing output shaft end, and is connected to bearing axle by flat key。Described splined shaft stretches out in the forward outer surface of described sun gear 26 and is formed with the spline structure axially extended, the cylinder inner wall of described p-m rotor matrix 5 is formed with the spline structure matched, thus the front end of described splined shaft 19 is goed deep into the cylinder inner wall of p-m rotor matrix 5 and is connected by spline with it, so by axial splines structure make p-m rotor matrix 5 can along splined shaft 19 when axially carrying out movable, p-m rotor matrix 5 can drive splined shaft 19 to circumferentially rotate when rotating simultaneously。The position corresponding to gear assembly at described casing cylinder 9 arranges joint type priming cup 11, by joint type priming cup 11 to gear assembly and drive screw assembly charging-up lubricant oil, bottom gear box casing, offer fuel outlet, fuel outlet is provided with bleeder plug 47, drained the oil by bleeder plug 47。
During permanent magnet coupling arrangements for speed regulation of the present invention work, motor shaft adapter is connected with motor output shaft (power source), copper ring rotates under power source drives, permanent magnet rotor component produce the magnetic line of force will in copper ring inducing eddy-current, and the induced field that eddy current produces will interact with permanent magnetic field, and then drive permanent magnet rotor component to rotate in the same direction along with copper ring, and then splined shaft is driven to rotate and transmit moment of torsion by permanent magnet rotor component。When carrying out rotating speed or torque adjustment when needs, can be adjusted by handwheel or motor, when being adjusted by handwheel 33, hand wheel rotating drives hand wheel shaft 34 to rotate, the convex dental inlay of hand wheel shaft end face start with moved end power shaft 38 end face recessed tooth in, manually end conical gear 39 is driven to rotate, manually end conical gear 39 drives driven bevel gear 12 to rotate, driven bevel gear 12 drives driving gear 10 to rotate, driving gear 10 drives sun gear 26 to rotate, sun gear 26 drives planetary gear 25 to rotate, threadeding between planetary gear 25 with drive screw 27, 9 drive screws 27 can be pulled to move axially the rotation making planetary gear 25, drive bearing block 8 is moved linearly by drive screw 27 move axially vertically, finally p-m rotor matrix 5 is driven to move linearly vertically by bearing block 8, axial overlap area (area of contact) between permanent magnet rotor component and magnetic conduction rotor assembly is changed, magnetic action before causing both changes, rotating speed and the torque of final transmission change, and exported by splined shaft 16, achieve speed governing purpose。With needing to carry out rotating speed or when torque is automatically adjusted, motor 46 is by axle sleeve type shaft coupling 44(clutch) drive automatic end power shaft 41 to rotate, automatic end power shaft 41 drives automatic end conical gear 40 to rotate, automatic end conical gear 40 drives driven bevel gear 12 to rotate, all the other motion transmittance process be manually entered identical。The present invention passes through Single-chip Controlling motor, it may be achieved automatically control the forward and inverse rotary motion of power shaft, also can control its rotating speed simultaneously。
Axial area of contact adjustment type permanent magnet coupling arrangements for speed regulation proposed by the invention, the area of contact of interaction is changed by the axial regulating mechanism adjustment permanent magnet rotor component created and magnetic conduction rotor assembly relative position on axis horizontal direction, and then change the torque of transmission between magnetic conduction rotor and p-m rotor, realize the conversion to load speed, reach variable speed energy saving purpose, and can when not changing motor running speed, the speed adjustment without dead smooth can be carried out according to the change of load at the outfan of motor, not only energy-efficient, environmental protection, and speed regulation process does not result in current harmonics and electromagnetic interference etc. and pollutes, and contactless between load with motor it is connected, motor can be protected in the event of overloading injury-free, can be widely applied for generating, metallurgical, petrochemical industry, mining, papermaking, supply water, water utilities, cement, the centrifugal load of the industries such as irrigation, there is wide market application foreground。
Below it is only that the preferred embodiment of the present invention is described; technical scheme is not limited to this; the any known deformation that those skilled in the art make on the basis that the major technique of the present invention is conceived broadly falls into the claimed technology category of the present invention, and the protection domain that the present invention is concrete is as the criterion with the record of claims。
Claims (10)
1. axial area of contact adjustment type permanent magnet coupling arrangements for speed regulation, it is characterized in that, including: magnetic conduction rotor assembly (100), permanent magnet rotor component (200), bearing block assembly (300), drive screw assembly (400), gear case assembly (500) and speed governing output shaft, one end of described magnetic conduction rotor assembly (100) connects power input mechanism, the other end of described magnetic conduction rotor assembly (100) is formed as inner tube structure, described permanent magnet rotor component (200) can extend in the inner tube structure of described magnetic conduction rotor assembly (100), and between outer side surface and the inner core wall of described magnetic conduction rotor assembly (100) of described permanent magnet rotor component (200), there is fixing radial air gap, described permanent magnet rotor component (200) is installed on described bearing block assembly (300), and described permanent magnet rotor component (200) can circumferentially rotate relative to described bearing block assembly (300), and synchronization can move axially with described bearing block assembly (300), one end of described drive screw assembly (400) is fixedly connected on described bearing block assembly (300), the other end is threadedly connected to described gear case assembly (500), described gear case assembly (500) can drive described drive screw assembly (400) to move axially, the front portion of described speed governing output shaft is connected to described permanent magnet rotor component (200) by spline, the rear portion of described speed governing output shaft is installed on described gear case assembly (500) by bearing。
2. axial area of contact adjustment type permanent magnet coupling arrangements for speed regulation according to claim 1, it is characterized in that, described gear case assembly (500) includes gear box casing (13), wheel fixed disk (22), planetary gear (25), sun gear (26), adjustable side conical gear (14), adjustable side power shaft (15), driving gear (10) and driven bevel gear (12), described fixed disk (22) of taking turns is installed on the front opening of described gear box casing (13), described planetary gear (25), sun gear (26) and driving gear (10) are installed on by bearing described takes turns on fixed disk (22), and described planetary gear (25) is engaged on described sun gear (26), described driving gear (10) is engaged on described sun gear (26), described driven bevel gear (12) is connected on described driving gear (10), described adjustable side conical gear (14) is connected on described adjustable side power shaft (15), described driven bevel gear (12) is engaged in described adjustable side conical gear (14), the rear portion of described speed governing output shaft is installed on by bearing on described sun gear (26) and described gear box casing (13), the other end of described drive screw assembly (400) is threadedly connected to described planetary gear (25)。
3. axial area of contact adjustment type permanent magnet coupling arrangements for speed regulation according to claim 2, it is characterized in that, described planetary gear (25) includes three, and it is uniformly distributed circumferentially in the periphery of described sun gear (26), the central authorities of each planetary gear (25) offer screwed hole, described driving gear (10) is disposed therein between two planetary gears, described driven bevel gear (12) is fixedly connected on described driving gear (10) by flat key, described adjustable side conical gear (14) is fixedly connected on described adjustable side power shaft (15) by flat key, described drive screw assembly (400) includes three drive screws (27), the outer wall of every drive screw (27) is each formed with external screw thread, and one end of every drive screw (27) is fixedly connected with in described bearing block assembly (300), the other end of every drive screw (27) is threadedly connected in the screwed hole of a planetary gear (26) of correspondence。
4. the axial area of contact adjustment type permanent magnet coupling arrangements for speed regulation according to Claims 2 or 3, it is characterized in that, described adjustable side power shaft (15) includes manually holding power shaft (38) and automatic end power shaft (41), described adjustable side conical gear (14) includes manually holding conical gear (39) and automatic end conical gear (40), described manual end conical gear (39) is fixedly connected on described manual end power shaft (38) by flat key, described manual end conical gear (39) is engaged in the side of described driven bevel gear (12), described manual end power shaft (38) is arranged on described gear box casing (13) by bearing, described automatic end conical gear (40) is fixedly connected on described automatic end power shaft (41) by flat key, described automatic end conical gear (40) is engaged in the opposite side of described driven bevel gear (12), described automatic end power shaft (41) is arranged on described gear box casing (13) by bearing。
5. axial area of contact adjustment type permanent magnet coupling arrangements for speed regulation according to claim 4, it is characterized in that, described gear case assembly (500) also includes handwheel (33), hand wheel shaft (34), handwheel bearing (35), motor (46), motor bearing (45) and axle sleeve type shaft coupling (44), described handwheel (33) is arranged on described hand wheel shaft (34), described hand wheel shaft (34) is installed on described handwheel bearing (35) by matched in clearance, described handwheel bearing (35) is fixed on described gear box casing (13), moment of torsion transmission is carried out by the recessed tooth inlay card combination of convex tooth between described hand wheel shaft (34) and described manual end power shaft (38), described motor (46) is installed on described motor bearing (45), described motor bearing (45) is fixed on described gear box casing (13), the output revolving shaft of described motor (46) is connected to described automatic end power shaft (41) by described axle sleeve type shaft coupling (44)。
6. axial area of contact adjustment type permanent magnet coupling arrangements for speed regulation according to claim 5, it is characterized in that, it is provided with the first lip-type packing between described automatic end power shaft (41) and motor bearing (45), between described manual end power shaft (38) and handwheel bearing (35), is provided with the second lip-type packing。
7. the axial area of contact adjustment type permanent magnet coupling arrangements for speed regulation according to any one of claim 2-6, it is characterized in that, the central authorities of described sun gear (26) offer installing hole, on the rear surface of described gear box casing (13) with described installing hole just to be formed installation seal chamber, the rear portion of described speed governing output shaft seals on chamber by the installation of installing hole and described gear box casing (13) that bearing is installed on described sun gear (26), described installation annular seal space indoor are provided with mechanical oil seal (18), the rear end of described speed governing output shaft stretches out in outside the rear wall of described gear box casing (13)。
8. the axial area of contact adjustment type permanent magnet coupling arrangements for speed regulation according to any one of claim 2-7, it is characterized in that, also include casing cylinder (9), described casing cylinder (9) is fixedly mounted on described gear box casing, described magnetic conduction rotor assembly (100), permanent magnet rotor component (200), bearing block assembly (300) and drive screw assembly (400) are in the inside of described casing cylinder (9), described magnetic conduction rotor assembly (100) includes motor shaft adapter (1), magnetic conduction rotor matrix (2) and copper ring (3), one end of described motor shaft adapter (1) is fixedly connected on the motor output shaft as power input mechanism, the other end of described motor shaft adapter (1) is fixedly connected on described magnetic conduction rotor matrix (2), described magnetic conduction rotor matrix (2) has penetrating cylinder-like structure, described copper ring (3) is assemblied on the cylinder inner surface of magnetic conduction rotor matrix (2) by compression mode, the outer surface of described magnetic conduction rotor matrix (2) is provided with fin (32)。
9. axial area of contact adjustment type permanent magnet coupling arrangements for speed regulation according to claim 8, it is characterized in that, described permanent magnet rotor component (200) includes permanent magnetism sheet (4) and p-m rotor matrix (5), described permanent magnetism sheet (4) is uniformly fixed in the circumferential lateral surface of described p-m rotor matrix (5), fixing radial air gap is formed between outer surface and the internal face of described copper ring (3) of described permanent magnetism sheet (4), described p-m rotor matrix (5) be centrally formed through hole, the internal face of described through hole is formed the spline structure axially extended, the front portion of described speed governing output shaft is formed with the spline structure axially extended, the front portion of described speed governing output shaft is connected to described p-m rotor matrix (5) by spline fitted, make the described p-m rotor matrix (5) can axially moving forward and backward along described speed governing output shaft, and described speed governing output shaft can be driven circumferentially to rotate。
10. axial area of contact adjustment type permanent magnet coupling arrangements for speed regulation according to claim 9, it is characterized in that, described bearing block assembly (300) includes bearing gland (29), deep groove ball bearing (6), bearing block (8), sealing ring and axial limiting mechanism, described bearing block (8) be centrally formed through hole, the outer wall surface of described bearing block (8) is coordinated by small-gap suture with the inner wall surface of described casing cylinder (9), described sealing ring is arranged in the groove of the outer wall surface of bearing block (8), described p-m rotor matrix (5) is arranged in the through hole of described bearing block (8) by deep groove ball bearing (6), described bearing gland (29) is fixed on described bearing block and is limited in the through hole of bearing block (8) by described deep groove ball bearing (6), the through hole inwall of described bearing block (8) is provided with described axial limiting mechanism, ensure that described bearing block (8) synchronization moves axially with described p-m rotor matrix (5) by described axial limiting mechanism。
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Effective date of registration: 20180907 Address after: 215500 98 Tong Gang Road, Changshou City, Suzhou, Jiangsu Patentee after: JIANGSU DERACE PERMANENT MAGNET DRIVER TECHNOLOGY CO.,LTD. Address before: 730050 Lanzhou Industrial College, 1 Gong Gong Ping Road, Qilihe District, Lanzhou, Gansu Co-patentee before: Li Galin Patentee before: Li Xinyong |
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