CN2509370Y

CN2509370Y - Magnetic suspension bearing

Info

Publication number: CN2509370Y
Application number: CN 01233562
Authority: CN
Inventors: 郑哲立
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-08-20
Filing date: 2001-08-20
Publication date: 2002-09-04
Anticipated expiration: 2011-08-20

Abstract

The utility model belongs to the bearing and relates to a magnetic suspension bearing which comes into being through the arrangement of a group of magnetism inherent stress bearings is arranged on an ordinary centering shaft. The utility model consists of a plurality of combined bearings which are divided into a rotary shaft magnetism inherent stress bearing and a centering shaft magnetism inherent stress bearing. The rotary shaft magnetism inherent stress bearing consists of a central ring-shaped magnetism and two semi-ring-shaped magnetic bodies on the periphery, and the centering shaft magnetism inherent stress bearing consists of an external ring-shaped magnetic body and two semi-ring-shaped magnetic bodies at the center. The N and the S poles of the ring-shaped magnetic bodies and the semi-ring-shaped magnetic bodies are in the opposite direction so as to cause attraction and repulsion, with the sum of the attraction force and the repulsion force equaling zero. The cross sections of the magnetic bodies are rectangular. The utility model has the advantages of energy saving and safety guaranty and is widely used on the centering shaft and seal shaft of the wheels of the vehicles.

Description

Magnetic suspension bearing

Technical field

The utility model belongs to bearing, particularly a kind of bearing of magnetic supporting device.

Background technique

Two contact relative motion of object have friction, and its size is directly proportional with friction ractor and positive pressure.Each present class bearing all is a way of taking to reduce friction ractor in order to reduce friction, and such as the mode of taking to roll, the method for lubricating oil filling and various suspensions comprises magnetic suspension.But maglev method does not solve the problem of centering, so maglev method is not used on the traffic tool that generally use.

Summary of the invention

The purpose of this utility model is that the employing magnetic same sex is repelled each other, and the principle that there is a natural attraction between the sexes produces magnetic stress, and making load and prestressed vector on the bearing is zero, designs a kind of friction of bearing that makes and also can solve the magnetic suspension bearing of centering near zero.

Magnetic suspension bearing of the present utility model, outside forming by common alignment bearing 3 and axle 10, bearing outside 11, other adds one group of magnetically prestressed bearing 1 (in the dashed rectangle), magnetically prestressed bearing 1 is made up of 1 to 100 combination bearing 2,2 fens magnetically prestressed bearings of rotating shaft of combination bearing and the magnetically prestressed bearing of axle.The magnetically prestressed bearing of rotating shaft is made up of center annular magnet 6 and two semi-circular magnets 4,5 of outer shroud, the outside of semi-circular magnet 4 is N (S) utmost point, the inboard is S (N) utmost point, toroidal magnet 6 inboards are S (N) utmost point, and the outside is N (S) utmost point, and the inboard of semi-circular magnet 5 is N (S) utmost point, the outside is S (N) utmost point, when middle rotatingshaft 10 is subjected to load force when downward, be attraction force between magnet 4 and the magnet 6, direction is opposite with load force.Be repulsive force between magnet 5 and the magnet 6, direction is opposite with load force, the equal and opposite in direction of attraction force and repulsive force sum and load force, and direction is opposite, and be zero making a concerted effort on the rotatingshaft 10.Organize the combining form of magnetic pole in the above-mentioned bracket for another.

The magnetically prestressed bearing of axle is to be two semi-circular magnets 7 by the center, 8 form, outer shroud is a toroidal magnet 9, semi-circular magnet 7 outsides are N (S) utmost point, the inboard is S (N) utmost point, toroidal magnet 9 inboards are N (S) utmost point, the outside is S (N) utmost point, semi-circular magnet 8 outsides are S (N) utmost point, and the inboard is N (S) utmost point, and outer shroud is that rotatingshaft is when being subjected to load force downward, be repulsive force between magnet 7 and the magnet 9, direction is opposite with load force, is attraction force between magnet 8 and the magnet 9, the equal and opposite in direction of attraction force and repulsive force sum and load force, direction is opposite, and be zero making a concerted effort on the rotating magnet 9.Organize the combining form of magnetic pole in the above-mentioned bracket for another.

All be by adjusting the magnetic pole number under aforementioned two kinds of situations, the size of magnetic pole gap and magnetic intensity makes load force on the rotatingshaft and magnetically prestressed quite basic and direction is opposite, and making making a concerted effort on the bearing is zero.Take advantage of friction ractor because of friction equals positive pressure, when positive pressure was zero, friction also was zero.There are processing and assembling and use error in actual applications, so friction approaches zero.

4, the cross section of 5,6,7,8,9 six toroidal magnets is a rectangle, and Elongation is 1/4～4/1,4 and 5,7 and 8 can be separately semi-circular, also can be the whole ring that connects together.Magnet material is a neodymium-iron-boron magnetic material.Leave the gap between each magnet, the magnet gap width is 1/2 to 2/1 with the ratio of magnet cross-sectional width, in order to the efficient of performance magnet.

The utility model can energy saving, and safer and other rolling or sliding bearing cooperates, and the axle center orientation problem is resolved, and can be widely used on the axle and rotating shaft of wheel of the traffic tool.

Description of drawings

Fig. 1 is the magnetic bearing structure schematic representation

Fig. 2 is the magnetically prestressed bearing figure of rotating shaft

Fig. 3 is the magnetically prestressed bearing figure of axle

Embodiment

Embodiment one

Magnetic suspension bearing is by axle 10, bearing housing 11 and two rolling bearings 3, on axle with 2 combination bearings 2, combination bearing 2 adopts the magnetically prestressed bearing of rotating shaft, form by center annular magnet 6 and two semi-circular magnets 4,5 of outer shroud, the outside of semi-circular magnet 4 is the N utmost point, the inboard is the S utmost point, toroidal magnet 6 inboards are the S utmost point, the outside is the N utmost point, the inboard of semi-circular magnet 5 is the N utmost point, and the outside is the S utmost point, when middle rotatingshaft 10 is subjected to load force when downward, between magnet 4 and the magnet 6 is attraction force, and direction is opposite with load.Be repulsive force between magnet 5 and the magnet 6, direction is opposite with load force, and be zero making a concerted effort on the rotatingshaft.The cross section of magnet is a rectangle, and Elongation is 2 to 1, and magnet gap and cross-sectional width equate that magnet material adopts neodymium iron boron.

Embodiment two

Magnetic suspension bearing is by axle 10, bearing housing 11 and two rolling bearings 3, on axle with 4 combination bearings 2, combination bearing 2 adopts the magnetically prestressed bearing of axle, be to be two semi-circular magnets 7 by the center, 8 form, and outer shroud is a toroidal magnet 9, and semi-circular magnet 7 outsides are the N utmost point, the inboard is the S utmost point, toroidal magnet 9 inboards are the N utmost point, and the outside is the S utmost point, and semi-circular magnet 8 outsides are the S utmost point, the inboard is the N utmost point, when outer shroud rotating magnet 9 is subjected to load force downward, be repulsive force between magnet 7 and the magnet 9, direction is opposite with load force, be attraction force between magnet 8 and the magnet 9, attraction force and repulsive force sum and load force equal and opposite in direction, direction is opposite, and be zero making a concerted effort on the rotating magnet 9.The cross section of magnet is that rectangular aspect ratio is 1, and magnet gap and cross-sectional width ratio are 1/2, and magnet material adopts neodymium iron boron.

Claims

1, a kind of magnetic suspension bearing, by common alignment bearing (3), axle (10), bearing outside (11) is formed, it is characterized in that adding in addition one group of magnetically prestressed bearing (1), magnetically prestressed bearing is made up of 1-100 combination bearing (2), combination bearing (2) divides magnetically prestressed bearing of rotating shaft and the magnetically prestressed bearing of axle, the magnetically prestressed bearing of rotating shaft is made up of center annular magnet (6) and the semi-circular magnet of outer shroud (4) and (5), the outside of semi-circular magnet (4) is the N utmost point, and the inboard is the S utmost point, and toroidal magnet (6) outside is the N utmost point, the inboard is the S utmost point, the inboard of semi-circular magnet (5) is the N utmost point, and the outside is the S utmost point, and the magnetically prestressed bearing of axle is that two semi-circular magnets (7) and (8) are formed by the center, outer shroud is toroidal magnet (9), semi-circular magnet (7) outside is the N utmost point, and the inboard is the S utmost point, and toroidal magnet (9) inboard is the N utmost point, the outside is the S utmost point, semi-circular magnet (8) outside is the S utmost point, and the inboard is the N utmost point, magnet (4), (5), (6) (7), (8), (9) cross section is a rectangle.

2, magnetic suspension bearing according to claim 1 is characterized in that magnet (4) and (5), and (7) and (8) also can be to connect together to be whole ring.

3, magnetic suspension bearing according to claim 1 is characterized in that magnet material is a neodymium-iron-boron magnetic material.

4, magnetic suspension bearing according to claim 1, the Elongation that it is characterized in that magnet cross section rectangle is 1/4～4/1.

5, magnetic suspension bearing according to claim 1 is characterized in that the magnet gap width and the ratio of magnet cross-sectional width are 1/2 to 2/1.