CN101344122B - Outward rotation type permanent magnet oriented suspending bearing - Google Patents
Outward rotation type permanent magnet oriented suspending bearing Download PDFInfo
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- CN101344122B CN101344122B CN2008101189797A CN200810118979A CN101344122B CN 101344122 B CN101344122 B CN 101344122B CN 2008101189797 A CN2008101189797 A CN 2008101189797A CN 200810118979 A CN200810118979 A CN 200810118979A CN 101344122 B CN101344122 B CN 101344122B
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Abstract
The invention discloses an outward rotating type permanent magnet orientation suspension bearing which comprises an inner suspension circle, an outer suspension circle and a cantilever roller, wherein, the thicknesses of the ring groove walls, the side magnetic tiles, the ring magnetic tiles and the inlaying bodies of the inner suspension circle and the outer suspension circle are equal, with corresponding homosexual magnetic pole ring magnets; the repulsion levitation force of the ring magnets suspends the inner suspension circle in the center of the outer suspension circle; an air gap is arranged between the inner suspension circle and the outer suspension circle. The role that the cantilever roller plays is to carry out axial direction limit to the outer suspension circle so as to lead the outer suspension circle to only rotate and change the suspension air gap along the radial direction but not to move along the axial direction. When the outer suspension circle rotates, the cantilever roller follows to rotate; as the radial levitation force is far greater than the axial position limit force, the rotating friction force of the cantilever roller is very small.
Description
Technical field
The invention belongs to technical field of bearings, be specifically related to a kind of outward rotation type permanent magnet oriented suspending bearing.
Background technique
Permanent-magnet suspension bearing is not because of having wearing and tearing, low, the mechanics good buffer effect of power loss, and be subjected in the industry welcome, need electromagnetism and Control System of Microcomputer assistance work thereof in the course of the work because of permanent-magnet suspension bearing again, and increased the complexity of equipment, reduced the reliability of work, so limited its industrial use.For example: " a kind of machinery-permanent magnetic suspension composite shaft " (patent No.: 200410097928.2).
Summary of the invention
The object of the present invention is to provide a kind of outward rotation type permanent magnet oriented suspending bearing.Outer shroud of the present invention rotates and interior ring is fixed, and does not have wearing and tearing, no power waste, mechanics good buffer effect in the principal pressure direction of rotatingshaft, and it is safe and reliable, bearing non-working surface leakage field (Br)≤1%.
For achieving the above object, outward rotation type permanent magnet oriented suspending bearing provided by the invention mainly is made up of inner suspension circle, the outer circle that suspends, overhang roll, wherein:
The central authorities of inner suspension circle are axis hole, and the inner suspension circle is arranged on the inner ring of the outer circle that suspends, and is provided with suspension air gap between the two;
Several roller seats equally are fixed on the bi-side of inner suspension circle at interval, each roller seat is fixed with a roll shaft, overhang roll is arranged on the roll shaft rotationally, each overhang roll and the outer contacts side surfaces that suspends and enclose, and the circle axial restraint that will suspend outward is on the parallel position that aligns with the inner suspension circle;
The outer ring edge of inner suspension circle is provided with interior circular groove, the outer inner ring edge that suspends circle is provided with outer annular groove, and all be inlaid with at least two row's ring magnetic shoes in two notches side by side, wherein the S utmost point of row's ring magnetic shoe is towards notch, the N utmost point of another row's ring magnetic shoe is towards notch, and two rows arranged side by side encircle between the magnetic shoes and are provided with the nonferromagnetic inlay in the same notch; Ring magnetic shoe in the ring magnetic shoe in the notch of interior circular groove and the notch of outer annular groove is that homopolarity is relative, produces repulsion each other;
Be provided with the side magnetic shoe between two side cell walls of being adjacent respectively of ring magnetic shoe, the direction of magnetization of side magnetic shoe is vertical with the direction of magnetization of the ring magnetic shoe that contacts separately, the S utmost point towards the side magnetic shoe N of ring magnetic shoe one side of the notch utmost point towards cell wall; The N utmost point towards the side magnetic shoe S of ring magnetic shoe one side of the notch utmost point towards cell wall;
The cell wall of inner suspension circle and the outer circle that suspends, side magnetic shoe, ring magnetic shoe, its thickness of nonferromagnetic inlay equate.
The present invention the principal pressure direction of axle adopt permanent magnet suspension with accomplish not have wearing and tearing, no power waste, mechanics good buffer effect; In the side direction vertical with the axle principal pressure, the employing limiting roll is spacing, when guaranteeing that the permanent-magnet suspension bearing inner and outer rings aligns, also, the moving contact of roller consumed amount of power because of having taken place, but directly affact on the mechanical bearing with the principal pressure of axle and to compare, can reduce power loss 90%, also greatly improve the reliability of permanent-magnet suspension bearing work simultaneously, be beneficial in industrial extensive use.Simultaneously, provide power output owing to the present invention is rotated by outer suspension circle, the suffered centrifugal force of the ring magnetic shoe of outer suspension ring annular groove is born by the bottom land of outer suspension circle under high rotating speed, so is suitable in the equipment that rotating speed has relatively high expectations.
Description of drawings
Fig. 1 is the outward rotation type permanent magnet oriented suspending bearing front schematic view
Fig. 2 is Figure 1B-B generalized section
Fig. 3 is Fig. 2 A-A generalized section
Fig. 4 is an outward rotation type permanent magnet oriented suspending bearing mounting type schematic representation
Fig. 5 is Fig. 4 C-C generalized section
Specific embodiment
The present invention is made of inner suspension circle, the outer circle that suspends, spacing assembly three parts of overhang roll.Wherein: inner suspension circle part: constitute by interior circular groove, interior ring permanent magnetic tile, nonferromagnetic inlay three parts.The notch of interior circular groove is towards the outside in the center of circle, and bottom land surrounds axis hole, is made by ferromagnetic substance (being such as but not limited to carbon steel).Arranged side by side in the notch of interior circular groove have at least two rows to encircle magnetic shoes, forms the interior ring permanent magnetic tile around notch.Wherein a row ring magnetic shoe be the N utmost point towards notch, another row's ring magnetic shoe be the S utmost point towards notch, be provided with nonferromagnetic inlay ring between two row's ring magnetic shoes, its thickness 0.5-3 millimeter, with 1 millimeter is good, and its effect is both to have reduced axial repulsion, again to radially scolding suspending power not produce big influence.Be respectively equipped with the side magnetic shoe at the both sides of interior circular groove cell wall and ring between the magnetic shoe, the direction of magnetization of side magnetic shoe is vertical with ring magnetic, and when the N utmost point of ring magnetic shoe during towards notch, the N utmost point of side magnetic shoe is towards the N utmost point that encircles magnetic shoe, and the S utmost point of side magnetic shoe is towards the cell wall of interior circular groove; When the S utmost point of ring magnetic shoe during towards notch, the S utmost point of side magnetic shoe is to the S utmost point of ring magnetic shoe, and the N of side magnetic shoe is the cell wall of circular groove extremely inwardly, to improve the suspending power of ring magnetic.Ring magnetic shoe and side magnetic shoe are made by hard magnetic material (being such as but not limited to neodymium iron boron), and its volume is neglected the required suspending power size of permanent-magnet suspension bearing greatly and decided, and its formula is known, and also available commercially available business software is found the solution, so do not describe in detail.The nonferromagnetic inlay is made by non-ferromagnetic metal (being such as but not limited to aluminum alloy).When the suspending power to permanent-magnet suspension bearing has bigger the requirement, the number of rings that also can increase the ring magnetic shoe of equal number in the notch of interior circular groove and outer annular groove meets the demands, but N polar ring and S polar ring must be spaced, and the thickness of the nonferromagnetic inlay between the two ring permanent magnets will equate.
The outer circle part that suspends: constitute by outer annular groove, outer shroud permanent magnetic tile, nonferromagnetic inlay three parts.The notch of outer annular groove is to the inboard in the center of circle, and bottom land surrounds outer rim, is made by ferromagnetic substance (being such as but not limited to carbon steel).The ring magnetic shoe that has with interior circular groove equal number arranged side by side forms the outer shroud permanent magnetic tile around notch in the notch of outer annular groove.Wherein a row ring magnetic shoe be the N utmost point towards notch, another row's ring magnetic shoe be the S utmost point towards notch, between N polar ring and S polar ring, be provided with the nonferromagnetic inlay, its thickness 0.5-3 millimeter is good with 1 millimeter.Its effect is both to have reduced axial repulsion, again to radially scolding suspending power not produce big influence.Be provided with the side magnetic shoe between outer groove wall and ring magnetic shoe, the direction of magnetization of side magnetic shoe is vertical with the direction of magnetization of ring magnetic shoe.When the N utmost point of ring magnetic shoe during towards notch, the N utmost point of side magnetic shoe is to N polar ring magnetic shoe, and the S utmost point of side magnetic shoe is to the outer groove wall; When the S utmost point of ring magnetic shoe during towards notch, the S utmost point of side magnetic shoe is to S polar ring magnetic shoe, and the N utmost point of side magnetic shoe is to the outer groove wall, to improve the suspending power of ring magnetic.Ring magnetic shoe and side magnetic shoe are made by hard magnetic material (being such as but not limited to neodymium iron boron).Its volume is neglected the required suspending power size of permanent-magnet suspension bearing greatly and is decided, and its formula is known, and also available commercially available business software is found the solution, so do not describe in detail.The nonferromagnetic inlay is made by non-ferromagnetic metal (being such as but not limited to aluminum alloy).
Spacing overhang roll assembly part: constitute by overhang roll and roller seat two-part.Overhang roll is connected by roll shaft and roller seat.Roller seat is fixed on the interior circular groove of inner suspension circle, and the roll shaft of overhang roll points to the center of circle.The both sides overhang roll is corresponding to be installed, and the circle that suspends is limited in the central authorities of both sides overhang roll outward.The circle that suspends outside making can only rotate and radially change suspension air gap (moving), can not go here and there vertically.Overhang roll, roller seat, roll shaft are such as but not limited to the aluminum alloy manufacturing by metal.
The working principle of outward rotation type permanent magnet oriented suspending bearing is, strict the equating of thickness of the annular groove wall of the thickness of the annular groove wall of inner suspension circle, side magnetic shoe, N utmost point magnetic shoe, inlay, S utmost point magnetic shoe and corresponding outer suspension circle, side magnetic shoe, N utmost point magnetic shoe, inlay, S utmost point magnetic shoe.And like pole ring magnetic correspondence, it scolds suspending power that the inner suspension circle is suspended in the outer central authorities that suspend and enclose, and air gap is decided by actual engineering demand between the two.Can fix on when no specific (special) requirements between the 4-20 millimeter, be good with 10 millimeters.The effect of overhang roll is that the circle that externally suspends carries out axial limiting, makes it to rotate and radially changes suspension air gap
(to adapt to different axial compressions) can not go here and there vertically.When outer suspension circle rotated, spacing overhang roll and then rotated, because of radial suspension force much larger than axial limiting power, so the rotation friction of limiting roll is very little, compares with same model roller pearl bearing and can save energy 90%, working life is to 2 times of the youthful and the elderlys.
The following stated content is the detailed description of in conjunction with the accompanying drawings the present invention being carried out, and should not be understood that it is limitation of the invention.
See also Fig. 1, inner suspension circle 1 is arranged on the central authorities of the outer circle 2 that suspends, and is provided with 10 millimeters suspension air gaps 3 between the two, and the central authorities of inner suspension circle 1 are axis hole 4, and spacing overhang roll assembly 5 is by being bolted on the inner suspension circle 1.Spacing overhang roll assembly 5 is made of roller seat 5a, overhang roll 5b.Overhang roll 5b links fixing by roll shaft 5b ' and roller seat 5a.See also Fig. 2, overhang roll assembly 5 is fixed on the bi-side of inner suspension circle 1, and the cantilever end of roller seat 5a does not contact (being provided with small air gap between the two) and rubs between the two avoiding with outer suspension circle 2.Having only overhang roll 5b to move with outer circle 2 rollers that suspend contacts.Overhang roll 5b will suspend outward circle 2 be limited in the inner suspension circle 1 parallel design attitude that aligns on, i.e. axial limiting can only rotate it and air gap radially takes place to change (moving).It can also be seen that from Fig. 2 the interior circular groove 1a of inner suspension circle 1 is corresponding with the notch of the outer annular groove 2a of the outer circle 2 that suspends.Central authorities in the interior circular groove 1a are inlaid with the S utmost point and N polar ring magnetic shoe 1c, and between is provided with nonferromagnetic inlay 1d.Between the cell wall 1a ' of interior circular groove 1a and the S utmost point and N polar ring magnetic shoe 1c, be provided with side magnetic shoe 1b.The direction of magnetization of side magnetic shoe 1b is vertical with the direction of magnetization of ring magnetic shoe 1c, and when the S utmost point of ring magnetic shoe 1c during towards notch, the S utmost point of side magnetic shoe 1b is towards S polar ring magnetic shoe 1c, and the N utmost point of side magnetic shoe 1b is towards cell wall 1a '; When the N utmost point of ring magnetic shoe 1c during towards notch, the N utmost point of side magnetic shoe 1b is towards N polar ring magnetic shoe 1c, and the S utmost point of side magnetic shoe 1b is towards cell wall 1a.Central authorities in the outer annular groove 2a are inlaid with the S utmost point and N polar ring magnetic shoe 2c, and between is provided with nonferromagnetic inlay 2d.Be provided with side magnetic shoe 2b between the cell wall 2a ' of outer annular groove 2a and the S utmost point and N polar ring magnetic shoe 2c, the direction of magnetization of side magnetic shoe 2b is vertical with the direction of magnetization of ring magnetic shoe 2c; When the S utmost point of ring magnetic shoe 2c during towards notch, the S utmost point of side magnetic shoe 2b is towards S polar ring magnetic shoe 2c, and the N utmost point of side magnetic shoe 2b is towards cell wall 2a '; When the N utmost point of ring magnetic shoe 2c during towards notch, the N utmost point of side magnetic shoe 2b is towards N polar ring magnetic shoe 2c, and the S utmost point of side magnetic shoe is towards cell wall 2a '.Cell wall 2a ', side magnetic shoe 2b, the ring magnetic shoe 2c of the cell wall 1a ' of inner suspension circle 1, side magnetic shoe 1b, ring magnetic shoe 1c, nonferromagnetic inlay 1d and the outer circle 2 that suspends, 2d is corresponding for the nonferromagnetic inlay, and its thickness is equal.See also Fig. 3, the ring magnetic shoe of inside and outside suspension circle (1c, 2c) homopolarity is relative, produces repulsion each other.It can also be seen that by Fig. 3 ring magnetic shoe (1c, 2c), side magnetic shoe (1b, 2b), nonferromagnetic inlay (1d, 2d) are to arrange continuously.See also Fig. 4, Fig. 5, outward rotation type permanent magnet oriented suspending bearing 6 is installed on the runner 8, and the wheel shaft 9 that passes through is fixed on the structural frame 7.
Use advantage of the present invention as the main stress direction do not have wearing and tearing, mechanics good buffer effect, safe and reliable, long service life, than the moving pearl bearing energy-conservation 90% of roller.
Claims (4)
1. an outward rotation type permanent magnet oriented suspending bearing comprises inner suspension circle, outer circle, the spacing overhang roll of suspending, wherein:
The central authorities of inner suspension circle are axis hole, and the inner suspension circle is arranged on the inner ring of the outer circle that suspends, and is provided with suspension air gap between the two;
Several roller seats equally are fixed on the bi-side of inner suspension circle at interval, each roller seat is fixed with a roll shaft, spacing overhang roll is arranged on the roll shaft rotationally, each spacing overhang roll and the outer contacts side surfaces that suspends and enclose, and the circle axial restraint that will suspend outward is on the parallel position that aligns with the inner suspension circle;
The outer ring edge of inner suspension circle is provided with interior circular groove, the notch of interior circular groove is towards the outside in the center of circle, the outer inner ring edge that suspends circle is provided with outer annular groove, the notch of outer annular groove is towards the inboard in the center of circle, and all be inlaid with at least two side by side in two notches and arrange the ring magnetic shoe of equal diameters, the N polar ring and the S polar ring of adjacent two row's ring magnetic shoes must be spaced, wherein the S utmost point of row's ring magnetic shoe is towards notch, the N utmost point of another row's ring magnetic shoe is towards notch, two rows arranged side by side encircle between the magnetic shoes and are provided with the nonferromagnetic inlay in the same notch, and the thickness of the nonferromagnetic inlay between two row's ring magnetic shoes equate; Ring magnetic shoe in the ring magnetic shoe in the notch of interior circular groove and the notch of outer annular groove is that homopolarity is relative, produces repulsion each other;
Between the both sides of interior circular groove cell wall and ring magnetic shoe, be respectively equipped with the side magnetic shoe; Be respectively equipped with the side magnetic shoe at the both sides of outer annular groove cell wall and ring between the magnetic shoe, the direction of magnetization of side magnetic shoe is vertical with the direction of magnetization of the ring magnetic shoe that contacts separately, the S utmost point towards the side magnetic shoe N of ring magnetic shoe one side of the notch utmost point towards cell wall; The N utmost point towards the side magnetic shoe S of ring magnetic shoe one side of the notch utmost point towards cell wall;
Cell wall, the side magnetic shoe of the cell wall of inner suspension circle, side magnetic shoe, ring magnetic shoe, nonferromagnetic inlay thickness and corresponding outer suspension circle, encircle magnetic shoe, nonferromagnetic inlay thickness is equal.
2. outward rotation type permanent magnet oriented suspending bearing as claimed in claim 1, wherein, ring magnetic shoe and side magnetic shoe are that neodymium iron boron is made.
3. outward rotation type permanent magnet oriented suspending bearing as claimed in claim 1, wherein, overhang roll, roller seat, roll shaft and nonferromagnetic inlay are that aluminum alloy is made.
4. outward rotation type permanent magnet oriented suspending bearing as claimed in claim 1, wherein, inner suspension circle and the outer circle that suspends are made for carbon steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101189797A CN101344122B (en) | 2008-08-27 | 2008-08-27 | Outward rotation type permanent magnet oriented suspending bearing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101189797A CN101344122B (en) | 2008-08-27 | 2008-08-27 | Outward rotation type permanent magnet oriented suspending bearing |
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| Publication Number | Publication Date |
|---|---|
| CN101344122A CN101344122A (en) | 2009-01-14 |
| CN101344122B true CN101344122B (en) | 2010-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101189797A Expired - Fee Related CN101344122B (en) | 2008-08-27 | 2008-08-27 | Outward rotation type permanent magnet oriented suspending bearing |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2340978Y (en) * | 1998-07-18 | 1999-09-29 | 李翼鹏 | Floatation high speed bearing |
| CN1381679A (en) * | 2001-04-18 | 2002-11-27 | 种振水 | Magnetically suspended bearing |
| CN1693726A (en) * | 2005-05-27 | 2005-11-09 | 南京航空航天大学 | Permanent magnet offset radial magnetic bearing |
| CN2764994Y (en) * | 2005-01-20 | 2006-03-15 | 曲洪源 | Permanent-magnet magnetic suspension bearing |
-
2008
- 2008-08-27 CN CN2008101189797A patent/CN101344122B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2340978Y (en) * | 1998-07-18 | 1999-09-29 | 李翼鹏 | Floatation high speed bearing |
| CN1381679A (en) * | 2001-04-18 | 2002-11-27 | 种振水 | Magnetically suspended bearing |
| CN2764994Y (en) * | 2005-01-20 | 2006-03-15 | 曲洪源 | Permanent-magnet magnetic suspension bearing |
| CN1693726A (en) * | 2005-05-27 | 2005-11-09 | 南京航空航天大学 | Permanent magnet offset radial magnetic bearing |
Non-Patent Citations (1)
| Title |
|---|
| JP平1-158216A 1989.06.21 |
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| CN101344122A (en) | 2009-01-14 |
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