CN201013750Y

CN201013750Y - Magnetic bearing

Info

Publication number: CN201013750Y
Application number: CNU2007200313181U
Authority: CN
Inventors: 孙宏钧
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-03-07
Filing date: 2007-03-07
Publication date: 2008-01-30
Anticipated expiration: 2017-03-07

Abstract

The utility model discloses a magnetic bearing including an outer lane made from permanent-magnet materials and an inner lane arranged in the outer lane. A clearance is arranged between the outer lane and the inner lane. An outer shell is covered on the outer lane and an inner shell is covered on the inner lane. The magnetic performances on the surfaces opposite to the outer lane and the inner lane are same. The utility model has the advantages of reasonable design and simple structure which can make the inner and outer lanes of the bearing realize no friction rotating according to the theory of same magnetic performance excluding thereby making the bearing work with no noise thus prolonging the service life of the bearing.

Description

Magnetic bearing

Technical field

The utility model relates to a kind of bearing, particularly a kind of magnetic bearing.

Background technique

The present conventional bearing that uses, the mode of employing ball or roller rolling friction and grease lubrication.Therefore, operating noise is big, parts are easy to wear, and lubricant grease also can cause environmental pollution in the higher temperature environment.In addition, for the requirement of some equipment unit high speed rotating, conventional bearing often can't be realized.

The model utility content

The purpose of this utility model is the deficiency that exists at prior art, provides a kind of reasonable in design, simple in structure, rotates and does not have friction, noise free, the magnetic bearing of long service life.

The technical solution of the utility model is: a kind of magnetic bearing, it is characterized in that: it comprises outer ring 1 of being made by permanent-magnet material and the inner ring 2 that is installed in the outer ring 1, be provided with gap 3 between described outer ring 1 and the inner ring 2, be positioned at and be coated with shell 4 on the outer ring 1, be coated with inner casing 5 on the inner ring 2, outer ring 1 is identical with magnetic on inner ring 2 apparent surfaces.

The utility model compared with prior art has the following advantages: the utility model is reasonable in design, simple for structure, the principle of repelling each other according to the magnetic same sex, make the Internal and external cycle of bearing realize that frictionless relatively rotates, thereby make the bearing working noise free, do not have friction, prolong the working life of bearing, can satisfy requirement the higher machinery of performance requirements such as rotating speed.

Description of drawings

Fig. 1 is a plan view of the present utility model.

Fig. 2 is the sectional drawing of first kind of embodiment of the utility model.

Fig. 3 is the section circle of the another kind of embodiment of the utility model.

Embodiment

The utility model will be further described below in conjunction with accompanying drawing.

As shown in Figure 1, the utility model comprises the outer ring of being made by permanent-magnet material 1 and is installed in inner ring 2 in the outer ring 1, is provided with gap 3 between described outer ring 1 and the inner ring 2, is positioned to be coated with shell 4 on the outer ring 1, be coated with inner casing 5 on the inner ring 2, outer ring 1 is identical with magnetic on inner ring 2 apparent surfaces.

As shown in Figure 2, outer ring 1 is a spill near the section of gap 3 one sides, and inner ring 2 is a convex near the section of gap 3 one sides; Outer ring 1 is made of the ring body that two symmetries are set up in parallel.

As shown in Figure 3, outer ring 1 is a convex near the section of gap 3 one sides, and inner ring 2 is a spill near the section of gap 3 one sides; Described inner ring 2 is made of the ring body that two symmetries are set up in parallel.The shape in gap 3 can be arranged to annular surface, sphere or other arc.

Working principle of the present utility model is as follows:

The main component of the utility model outer ring 1 and inner ring 2 material therefors is the permanent-magnet material neodymium iron boron, after the machine shaping, outer ring 1 is identical with magnetic on inner ring 2 relative two curved surfaces, therefore produce repulsive force between described two curved surfaces, thereby between two relative curved surfaces of outer ring 1 and inner ring 2, form an annular space, outer ring 1 and inner ring 2 can relatively rotate as frictionless under the support of magnetic force.

Claims

1. magnetic bearing, it is characterized in that: it comprises the outer ring (1) of being made by permanent-magnet material and is installed in the interior inner ring (2) in outer ring (1), be provided with gap (3) between described outer ring (1) and the inner ring (2), be positioned at and be coated with shell (4) on the outer ring (1), be coated with inner casing (5) on the inner ring (2), outer ring (1) is identical with magnetic on inner ring (2) apparent surface.

2. magnetic bearing according to claim 1 is characterized in that: described outer ring (1) is spill near the section of gap (3) one sides, and inner ring (2) is a convex near the section of gap (3) one sides.

3. magnetic bearing according to claim 2 is characterized in that: described outer ring (1) is made of the ring body that two symmetries are set up in parallel.

4. magnetic bearing according to claim 1 is characterized in that: described outer ring (1) is convex near the section of gap (3) one sides, and inner ring (2) is a spill near the section of gap (3) one sides.

5. magnetic bearing according to claim 4 is characterized in that: described inner ring (2) is made of the ring body that two symmetries are set up in parallel.