CN103107680A - Magnetic eddy-current coupler - Google Patents
Magnetic eddy-current coupler Download PDFInfo
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- CN103107680A CN103107680A CN2013100130405A CN201310013040A CN103107680A CN 103107680 A CN103107680 A CN 103107680A CN 2013100130405 A CN2013100130405 A CN 2013100130405A CN 201310013040 A CN201310013040 A CN 201310013040A CN 103107680 A CN103107680 A CN 103107680A
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Abstract
The invention relates to a magnetic eddy-current coupler which comprises an input shaft which is connected with a motor and an output shaft which is connected with load. The input shaft is fixedly sleeved with a left conductor plate. The magnetic eddy-current coupler further comprises a right conductor plate which is arranged with the left conductor plate in a parallel mode. The right conductor plate synchronously rotates with the left conductor plate through a connecting piece. A left magnetic plate and a right magnetic plate are arranged between the left conductor plate and the right conductor plate. A middle plate which is fixedly connected with the output shaft is arranged between the left magnetic plate and the right magnetic plate. The left magnetic plate, the middle plate and the right magnetic plate are arranged with the left conductor plate in a parallel mode. The left magnetic plate, the middle plate and the right magnetic plate synchronously rotate. The magnetic eddy-current coupler further comprises an air gap space adjusting machine which is capable of adjusting an air gap space between the left conductor plate and the left magnetic plate and an air gap space between the right conductor plate and the right magnetic plate. The magnetic eddy-current coupler is stable, reliable and efficient, is provided with the air gap space adjusting machine and is capable of conveniently achieving speed increasing or reducing requirements in a working condition process.
Description
Technical field
The present invention relates to a kind of magnetic eddy-current coupling.
Background technology
In actual life, the transmission shaft driven system applies of using shaft coupling to connect is very extensive, almost relates to the field of motor power transmission in industrial occasions and life, all can use the transmission shaft driven technology of shaft coupling.The shaft coupling that uses in mechanical field at present mostly is mechanical coupling and hydraulic type shaft coupling.Mechanical coupling is rigid connection, the mechanical force transmitting torque, in installation process, owing to there being the axial dipole field error, can increase the load that supports original paper, and the radial deflection error will produce sudden change load and cause the dither of equipment, and in addition, rigid connection also can produce impact load starting moment.The fluid coupling speed governing belongs to the poor efficiency mode of speed regulation, speed adjustable range is limited, the approximately 5%-10% that throws switch at a high speed, and the low speed slip loss is large, reach as high as more than 30% of rated power, precision is low, poor linearity, low-response, and starting current is large, and device is large, be not suitable for transformation, and, easily leakage, safeguard complicated, expense is large, can not satisfy the needs that improve device integrated automation level.
Magnetic couple shaft coupling using magnetic force coupled drive technology also claims the magnetic eddy-current coupling, and the shaft coupling of the transmission of comparing has advantages of following: 1. energy-saving effect: 25% ~ 66%; 2. maintenance workload is little, is almost non-maintaining product, and maintenance cost is extremely low; 3. allow the larger installation error of centralization (maximum can be 5mm), greatly simplified the Installation and Debugging process; 4. have overload protection function, thereby improved the reliability of whole system, eliminated the damage that system causes because of overload fully; 5. improve the startup ability of motor, reduced shock and vibration, coordinated the sharing of load that multimachine drives; 6. speed-regulating type can be in the situation that substantially constant the stepless of output speed that realize of motor speed; 7. long service life, be 30 years designed life, and can prolongation useful life of parts in system; 8. be easy to realize remote control and automatically control, process control is accurately high; 9. simple in structure, adapt to various adverse circumstances, environmentally friendly, do not produce pollutant, do not produce harmonic wave, volume is little, and is easy for installation.
The magnetic couple coupling product of technology maturation, as the Related product of U.S. Magnadrive Corp., be applied to motor and dragged the field in the market, is a kind of permanent magnet coupling variable speed prod that high-power model is arranged.But due to the limitation that is subjected to this body structure of product and technical scheme, the technical performance of product own still has a lot of deficiencies to need to improve, mainly contain: 1. coupled speed regulator itself can't be regulated air-gap separation automatically, need to be equipped with the adjusting that relevant device is realized air-gap separation, to complete speed-regulating function, the design of corresponding final controlling element is larger to the performance impact of product; 2. the mechanical mechanism of regulating air-gap separation in product has intrinsic specification requirement, magnetic rotary disk to paired appearance, clearance adjustment mechanism mostly have mechanism many, carry out the characteristics such as reliability is unstable, these characteristics have affected shaft coupling and have been applied to occasion that adjusting speed accuracy is had higher requirements.
Summary of the invention
The problems referred to above that exist in order to solve existing magnetic eddy-current coupling, the invention provides a kind of air-gap separation governor motion, the magnetic eddy-current coupling that simple in structure, stable and reliable for performance, the increase and decrease that can conveniently realize output shaft in operating mode process speed requires, adjusting speed accuracy is high of carrying
The present invention adopts following technical scheme:
the magnetic eddy-current coupling, comprise the power shaft that is connected with motor, the output shaft that is connected with load, on described power shaft, fixed cover is equipped with left conductor disc, described magnetic eddy-current coupling also comprises the right conductor disc that is arranged in parallel with left conductor disc, right conductor disc is synchronizeed with left conductor disc by connector and is rotated, be provided with left disk and right disk between described left conductor disc and right conductor disc, be furnished with the telophragma that is fixedly connected with output shaft between left disk and right disk, left disk, telophragma, right disk and left conductor disc are arranged in parallel, described left disk, telophragma, right disk synchronously rotates, described magnetic eddy-current coupling also comprises can regulate air-gap separation between left conductor disc and left disk, and the air-gap separation governor motion of air-gap separation between right conductor disc and right disk.
further, described air-gap separation governor motion comprises inner sleeve, outer sleeve, described outer sleeve connects right disk by the clutch shaft bearing of transmitting thrust, inner sleeve is sleeved on output shaft by the second bearing is rotating, be provided with oblique chute on inner sleeve, be provided with the first slide block that coordinates with oblique chute on outer sleeve, also be provided with on outer sleeve and can make outer sleeve rotate the handle that advances, described air-gap separation governor motion also comprises the locating part that the restriction inner sleeve moves, be provided with the transmission mechanism that can make left disk and right disk synchronous on-off between described left disk and right disk.Preferably, described clutch shaft bearing is double-row conical bearing, but this double-row conical bearing transmitting thrust, do not transmit rotation, therefore, when sleeve rotating advances outside, outer sleeve can pull right disk to move axially, can not drive right disk and rotate (between outer sleeve and right disk due to the existence of double-row conical bearing, both between transmitting torque not).Described the second bearing is cylinder roller bearing, and this cylinder roller bearing not transmitting thrust does not transmit rotation yet.
Further, described transmission mechanism comprises the slide bar that is vertically fixed on the telophragma outer rim, slidably is sleeved on the second slide block on slide bar, the hinged left connecting rod in the left side of described the second slide block, the hinged right connecting rod in the right side of the second slide block, described left connecting rod and left disk are hinged, and right connecting rod and right disk are hinged.
Further, be provided with between described left disk and right disk the magnetic field phase mutual interference that prevents left disk and right disk every magnetic spare.
Further, described left conductor disc is provided with radiator away from a side of left disk, and described right conductor disc is provided with radiator away from a side of right disk.
Further, connect by connecting rod between described left disk, telophragma, right disk, the left disk of connecting rod drive, telophragma, right disk synchronously rotate.
Preferably, be provided with three groups of described transmission mechanisms between described left disk and right disk, three groups of transmission mechanisms are along circumferentially uniformly-spaced arranging.
Preferably, described oblique chute is helix.
Technical conceive of the present invention is: the power shaft of magnetic eddy-current coupling (speed end) connects motor output shaft, and the output shaft of magnetic eddy-current coupling (low speed end) connects load.After electric motor starting, regulate air-gap separation between air-gap separation between left disk and left conductor disc and right disk and right conductor disc by the air-gap separation governor motion, and then can adjust the transmitted power of this shaft coupling, and then adjustment output shaft rotating speed.
the transmission process of air-gap separation governor motion is: the handle on the rotary sleeve cylinder, the first slide block on outer sleeve slides on the oblique chute of inner sleeve, because limited restriction of inner sleeve can't move axially, therefore handle drive outer sleeve rotates and axially movable compound motion, be connected by double-row roller bearing between outer sleeve and right disk, this double-row roller bearing transmitting thrust does not transmit rotation, when therefore sleeve rotating advances outside, outer sleeve can pull right disk to move axially, can not drive right disk rotates (between outer sleeve and right disk due to the existence of double-row conical bearing, transmitting torque not both).Right disk drives the second slide block by right connecting rod and moves on slide bar, and the second slide block drives left disk by left connecting rod again and moves towards the direction relative with right disk.When left disk and right disk outwards move, air-gap separation between left disk and left conductor disc reduces, air-gap separation between right disk and right conductor disc reduces, left conductor disc increases the transmitting torque of left disk, right conductor disc increases the transmitting torque of right disk, left and right disk running speed improves, and the output shaft rotating speed improves; When left disk and right disk inwardly move, air-gap separation between left disk and left conductor disc increases, air-gap separation between right disk and right conductor disc increases, left conductor disc reduces the transmitting torque of left disk, right conductor disc reduces the transmitting torque of right disk, left and right disk running speed reduces, and the output shaft rotating speed reduces.Like this, by the air-gap separation between the air-gap separation between left disk and left conductor disc and right disk and right conductor disc, just can adjust the speed discrepancy between power shaft and output shaft.
Beneficial effect of the present invention is: carry the air-gap separation governor motion, and simple in structure, stable and reliable for performance, can conveniently realize the increase and decrease speed requirement of output shaft in the operating mode process, adjusting speed accuracy is high.
Description of drawings
Fig. 1 is that the embodiment of the present invention is worked as left disk and right disk is positioned at outermost structural representation.
Fig. 2 is that the embodiment of the present invention is worked as left disk and right disk is positioned at the most inboard structural representation.
Fig. 3 is that the embodiment of the present invention is regulated the schematic diagram of left disk and right disk spacing by handle.
Fig. 4 is the schematic diagram of the described cage construction of the embodiment of the present invention.
Fig. 5 is the left view of the described left disk of the embodiment of the present invention.
Drawing reference numeral: 1-power shaft; The 2-output shaft; The left conductor disc of 31-; The right conductor disc of 32-; The 33-connector; The left disk of 34-; The right disk of 35-; The 36-telophragma; The 37-connecting rod; The 38-permanent magnet; The 39-radiator; The 41-inner sleeve; The 42-outer sleeve; The oblique chute of 43-; 44-the first slide block; The 45-handle; The 51-slide bar; 52-the second slide block; The left connecting rod of 53-; The 54-right connecting rod.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
with reference to Fig. 1-5: the magnetic eddy-current coupling, comprise the power shaft 1 that is connected with motor, the output shaft 2 that is connected with load, on described power shaft 1, fixed cover is equipped with left conductor disc 31, described magnetic eddy-current coupling also comprises the right conductor disc 32 that is arranged in parallel with left conductor disc 31, right conductor disc 32 is synchronizeed rotation by connector 33 with left conductor disc 31, in the present embodiment, this connector 33 is many steel plates, left conductor disc 31, steel plate, consist of cage construction between right conductor disc 32, be provided with left disk 34 and right disk 35 between described left conductor disc 31 and right conductor disc 32, be furnished with the telophragma 36 that is fixedly connected with output shaft 2 between left disk 34 and right disk 35, left disk 34, telophragma 36, right disk 35 is arranged in parallel with left conductor disc 31, described left disk 34, telophragma 36, right disk 35 synchronously rotates, described magnetic eddy-current coupling also comprises can regulate air-gap separation between left conductor disc 31 and left disk 34, and the air-gap separation governor motion of air-gap separation between right conductor disc 32 and right disk 35.
described air-gap separation governor motion comprises inner sleeve 41, outer sleeve 42, described outer sleeve 42 connects right disk 35 by the clutch shaft bearing of transmitting thrust, inner sleeve 41 is sleeved on output shaft 2 by the second bearing is rotating, be provided with oblique chute 43 on inner sleeve 41, this oblique chute 43 is the part of helix, be provided with the first slide block 44 that coordinates with oblique chute 43 on outer sleeve 42, also be provided with on outer sleeve 42 and can make outer sleeve 42 rotate the handle 45 that advances, described air-gap separation governor motion also comprises the locating part that restriction inner sleeve 41 moves, in the present embodiment, this locating part is snap ring.Be provided with the transmission mechanism that can make left disk 34 and right disk 35 synchronous on-offs between described left disk 34 and right disk 35.In the present embodiment, described clutch shaft bearing is double-row conical bearing, but this double-row conical bearing transmitting thrust, do not transmit rotation, therefore, when (rotating and move axially compound screw) advanced in outer sleeve 42 rotations, outer sleeve 42 can pull right disk 35 to move axially, can not drive right disk 35 and rotate (between outer sleeve and right disk due to the existence of double-row conical bearing, both between transmitting torque not).Described the second bearing is cylinder roller bearing, and this cylinder roller bearing not transmitting thrust does not transmit rotation yet.
Described transmission mechanism comprises the slide bar 51 that is vertically fixed on telophragma 36 outer rims, slidably is sleeved on the second slide block 52 on slide bar 51, the hinged left connecting rod 53 in the left side of described the second slide block 52, the hinged right connecting rod 54 in the right side of the second slide block 52, described left connecting rod 53 is hinged with left disk 34, and right connecting rod 54 is hinged with right disk 35.Be provided with three groups of described transmission mechanisms between described left disk 34 and right disk 35, three groups of transmission mechanisms are along circumferentially uniformly-spaced arranging.
Connect by connecting rod 37 between described left disk 34, telophragma 36, right disk 35, the connecting rod 37 left disks 34 of drive, telophragma 36, right disk 35 synchronously rotate.In the present embodiment, described connecting rod 37 has three, and three connecting rods 37 are along circumferentially uniformly-spaced arranging, connecting rod 37 is arranged vertically with left disk 34, telophragma 36, right disk 35.
In the present embodiment, described left disk 34 and right disk 35 comprise metal dish, and a side ring of metal dish is furnished with permanent magnet 38.Be provided with between left disk 34 and right disk 35 the magnetic field phase mutual interference that prevents left disk and right disk every magnetic spare, in the present embodiment, should be every the magnetic copper coin every magnetic spare.
Described left conductor disc 31 is provided with radiator away from a side of left disk 34, and described right conductor disc 32 is provided with radiator 39 away from a side of right disk 35, and this radiator is the mechanical type radiator, and the radiator ring is located on left conductor disc 31 and right conductor disc 32.Because left disk 34 produces current vortex on left conductor disc 31, right disk 35 produces current vortex on right conductor disc 32, can reduce by radiator 39 high temperature that current vortex causes, and reduces caloric value.
The operation principle of the present embodiment is: the power shaft 1(speed end of magnetic eddy-current coupling) connect motor output shaft, the output shaft 2(low speed end of magnetic eddy-current coupling) the connection load.After electric motor starting, by the air-gap separation between air-gap separation and right disk 35 and right conductor disc 32 between the air-gap separation governor motion left disk 34 of adjusting and left conductor disc 31, and then can adjust the transmitted power of this shaft coupling, and then adjust the rotating speed of output shaft 2.Specific as follows:
Starter motor, power shaft 1 and the synchronized rotation of motor of magnetic eddy-current coupling, power shaft 1 drives left conductor disc 31 and right conductor disc 32 is synchronously rotated; Left conductor disc 31 drives left disk 34 by current vortex and rotates, right conductor disc 32 drives right disk 35 by current vortex and rotates, when left disk 34 and left conductor disc 31 distances, right disk 35 and right conductor disc 32 are distant, the current vortex that the magnetic induction line that left disk 34 sends produces on left conductor disc 31 is little, the current vortex that the magnetic induction line that right disk 35 sends produces on right conductor disc 32 is little, thereby the transmitting torque of 31 pairs of left disks 34 of left conductor disc is little, the transmitting torque of 32 pairs of right disks 35 of right conductor disc is little, causes left disk 34, right disk 35 rotating speeds lower.Synchronize rotation with telophragma 36 due to left and right disk, telophragma 36 is fixedly connected with output shaft 2 again, and left and right disk running speed reduces just to be equivalent to output shaft 2 rotating speeds and reduces.Otherwise, after the distance between the distance between left disk 34 and left conductor disc 31, right disk 35 and right conductor disc 32 reduces, the transmitting torque of 31 pairs of left disks 34 of left conductor disc improves, the transmitting torque of 32 pairs of right disks 35 of right conductor disc improves, left and right disk running speed improves, and output shaft 2 rotating speeds improve.
the transmission process of air-gap separation governor motion is: the handle 45 on rotary sleeve cylinder 42, the first slide block 44 on outer sleeve 42 slides on the oblique chute 43 of inner sleeve 41, this oblique chute 43 is the part of helix, and 41 limited restrictions of inner sleeve can't move axially, therefore handle 45 drive outer sleeves 42 rotate and move axially compound screw, be connected by double-row roller bearing between outer sleeve 42 and right disk 35, this double-row roller bearing transmitting thrust does not transmit rotation, when (rotating and move axially compound screw) advanced in outer sleeve 42 rotations, outer sleeve 42 can pull right disk 35 to move axially, can not drive right disk 35 rotates (between outer sleeve and right disk due to the existence of double-row conical bearing, transmitting torque not both).Right disk 35 drives the second slide block 52 by right connecting rod 54 and moves on slide bar 51, and the second slide block 52 drives left disk 34 by left connecting rod 53 again and moves towards the direction relative with right disk 35.When left disk 34 outwards moves with right disk 35, air-gap separation between left disk 34 and left conductor disc 31 reduces, air-gap separation between right disk 35 and right conductor disc 32 reduces, the transmitting torque of 31 pairs of left disks 34 of left conductor disc increases, the transmitting torque of 32 pairs of right disks 35 of right conductor disc increases, left and right disk running speed improves, and output shaft 2 rotating speeds improve; When left disk 34 inwardly moves with right disk 35, air-gap separation between left disk 34 and left conductor disc 31 increases, air-gap separation between right disk 35 and right conductor disc 32 increases, the transmitting torque of 31 pairs of left disks 34 of left conductor disc reduces, the transmitting torque of 32 pairs of right disks 35 of right conductor disc reduces, left and right disk running speed reduces, and output shaft 2 rotating speeds reduce.Like this, by the air-gap separation between the air-gap separation between left disk 34 and left conductor disc 31 and right disk 35 and right conductor disc 32, just can adjust the speed discrepancy between power shaft 1 and output shaft 2.
Above-described embodiment is only enumerating of the technology of the present invention design way of realization; protection scope of the present invention is not limited only to above-described embodiment, and protection scope of the present invention may extend to those skilled in the art according to the thinkable equivalent technologies means of technical conceive of the present invention.
Claims (10)
1. magnetic eddy-current coupling, it is characterized in that: comprise the power shaft that is connected with motor, the output shaft that is connected with load, on described power shaft, fixed cover is equipped with left conductor disc, described magnetic eddy-current coupling also comprises the right conductor disc that is arranged in parallel with left conductor disc, right conductor disc is synchronizeed with left conductor disc by connector and is rotated, be provided with left disk and right disk between described left conductor disc and right conductor disc, be furnished with the telophragma that is fixedly connected with output shaft between left disk and right disk, left disk, telophragma, right disk and left conductor disc are arranged in parallel, described left disk, telophragma, right disk synchronously rotates, described magnetic eddy-current coupling also comprises can regulate air-gap separation between left conductor disc and left disk, and the air-gap separation governor motion of air-gap separation between right conductor disc and right disk.
2. magnetic eddy-current coupling as claimed in claim 1, it is characterized in that: described air-gap separation governor motion comprises inner sleeve, outer sleeve, described outer sleeve connects right disk by the clutch shaft bearing of transmitting thrust, inner sleeve is sleeved on output shaft by the second bearing is rotating, be provided with oblique chute on inner sleeve, be provided with the first slide block that coordinates with oblique chute on outer sleeve, also be provided with on outer sleeve and can make outer sleeve rotate the handle that advances, described air-gap separation governor motion also comprises the locating part that the restriction inner sleeve moves, be provided with the transmission mechanism that can make left disk and right disk synchronous on-off between described left disk and right disk.
3. magnetic eddy-current coupling as claimed in claim 2, it is characterized in that: described transmission mechanism comprises the slide bar that is vertically fixed on the telophragma outer rim, slidably is sleeved on the second slide block on slide bar, the hinged left connecting rod in the left side of described the second slide block, the hinged right connecting rod in the right side of the second slide block, described left connecting rod and left disk are hinged, and right connecting rod and right disk are hinged.
4. magnetic eddy-current coupling as described in one of claim 1-3 is characterized in that: be provided with between described left disk and right disk the magnetic field phase mutual interference that prevents left disk and right disk every magnetic spare.
5. magnetic eddy-current coupling as claimed in claim 4, it is characterized in that: described left conductor disc is provided with radiator away from a side of left disk, and described right conductor disc is provided with radiator away from a side of right disk.
6. magnetic eddy-current coupling as claimed in claim 5 is characterized in that: connect by connecting rod between described left disk, telophragma, right disk, connecting rod drives left disk, telophragma, right disk and synchronously rotates.
7. magnetic eddy-current coupling as claimed in claim 3 is characterized in that: be provided with three groups of described transmission mechanisms between described left disk and right disk, three groups of transmission mechanisms are along circumferentially uniformly-spaced arranging.
8. magnetic eddy-current coupling as claimed in claim 2 or claim 3, it is characterized in that: described clutch shaft bearing is double-row conical bearing.
9. magnetic eddy-current coupling as claimed in claim 8, it is characterized in that: described the second bearing is cylinder roller bearing.
10. magnetic eddy-current coupling as claimed in claim 9, it is characterized in that: described oblique chute is helix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100130405A CN103107680A (en) | 2013-01-14 | 2013-01-14 | Magnetic eddy-current coupler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100130405A CN103107680A (en) | 2013-01-14 | 2013-01-14 | Magnetic eddy-current coupler |
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| CN103107680A true CN103107680A (en) | 2013-05-15 |
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| CN2013100130405A Pending CN103107680A (en) | 2013-01-14 | 2013-01-14 | Magnetic eddy-current coupler |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1248354A (en) * | 1997-02-20 | 2000-03-22 | 马格纳福斯公司 | Adjustable magnetic coupler |
| CN201118426Y (en) * | 2007-10-30 | 2008-09-17 | 东南大学 | Permanent vortex transmission device |
| CN101997397A (en) * | 2009-08-11 | 2011-03-30 | 余亚莉 | Barrel transmission shaft permanent magnet coupler capable of adjusting coupling space and area of air gap magnetic field |
| CN202197205U (en) * | 2011-08-31 | 2012-04-18 | 唐委校 | Variable torque and variable speed permanent magnetic coupler |
| CN202652041U (en) * | 2012-03-23 | 2013-01-02 | 育陞机械有限公司 | Permanent magnet speed regulator |
-
2013
- 2013-01-14 CN CN2013100130405A patent/CN103107680A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1248354A (en) * | 1997-02-20 | 2000-03-22 | 马格纳福斯公司 | Adjustable magnetic coupler |
| CN201118426Y (en) * | 2007-10-30 | 2008-09-17 | 东南大学 | Permanent vortex transmission device |
| CN101997397A (en) * | 2009-08-11 | 2011-03-30 | 余亚莉 | Barrel transmission shaft permanent magnet coupler capable of adjusting coupling space and area of air gap magnetic field |
| CN202197205U (en) * | 2011-08-31 | 2012-04-18 | 唐委校 | Variable torque and variable speed permanent magnetic coupler |
| CN202652041U (en) * | 2012-03-23 | 2013-01-02 | 育陞机械有限公司 | Permanent magnet speed regulator |
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Application publication date: 20130515 |