CN209130045U

CN209130045U - Suspension permanent magnetic bearing

Info

Publication number: CN209130045U
Application number: CN201821645509.1U
Authority: CN
Inventors: 欧阳山; 陈云松; 丁洁; 许洪清; 沈雅丽; 耿长文
Original assignee: Anhui Wannan Electric Machine Co Ltd
Current assignee: Anhui Wannan Electric Machine Co Ltd
Priority date: 2018-10-11
Filing date: 2018-10-11
Publication date: 2019-07-19
Anticipated expiration: 2028-10-11

Abstract

The utility model discloses a kind of suspension permanent magnetic bearings, the first and second magnet ring including same core arrangement, interconnecting piece on first and second magnet ring is connected for determining part, moving part respectively, side is identical as the magnetic pole of side where outer ring surface on the second magnet ring where first magnet ring upper inner ring face, inside and outside anchor ring is circular conical surface, and inner ring surface is neighbouring and positioned opposite with outer ring surface.Reduce the axial movement value for the moving part being connected with the second magnet ring, improves the stability of moving part operating.

Description

Suspension permanent magnetic bearing

Technical field

The utility model relates to technical field of motor manufacture, specially a kind of suspension permanent magnetic bearing arrangement.

Background technique

Magnetic suspension bearing be it is a kind of using magnetic field force by rotor suspension in space, do not need any medium and realize carrying Non-contact supporting arrangement, existing magnetic suspension bearing include inside and outside magnet ring, and outer magnetic ring is connected with fixing piece, internal magnetic ring and motor Shaft is connected, and internal magnetic ring is located in outer magnetic ring and the two is mutually exclusive, and mutually matched work anchor ring is cylinder on two magnet rings Face, therefore the internal magnetic ring being connected with shaft is only acted on by radial repulsion, is thus difficult to constrain the axial position of shaft, electricity When machine shaft works, shaft is easy axial float, influences the stability of motor operation.

Utility model content

The purpose of the utility model is to provide the suspension permanent magnetic bearings for capableing of stable operation after a kind of installation.

To achieve the goals above, the technical solution of use: a kind of suspension permanent magnetic bearing, the including same core arrangement One, two magnet ring, the interconnecting piece on the first and second magnet ring respectively for determine part, moving part is connected, side where the first magnet ring upper inner ring face and the The magnetic pole of side is identical where outer ring surface on two magnet rings, and inside and outside anchor ring is circular conical surface, inner ring surface neighbouring and opposite cloth with outer ring surface It sets.

Compared with prior art, the technical effect of the utility model are as follows: the inner ring surface of the first magnet ring and the second magnet ring it is outer Anchor ring is circular conical surface, and the repulsive force that the second magnet ring is subject to is decomposed into axial force and radial direction perpendicular to its outer ring surface, the repulsive force Power, radial force make the second magnet ring suspend, and axial force can constrain the axial position for the moving part being connected with the second magnet ring, reduce and The axial movement value of the connected moving part of second magnet ring, improves the stability of moving part operating.

Detailed description of the invention

Fig. 1 is the cross-sectional view of the utility model bearing；

Fig. 2 is that the bearing in Fig. 1 is assembled to the schematic diagram on motor；

Fig. 3 is the axial view of the first magnet ring；

Fig. 4 is the axial view of the second magnet ring；

Fig. 5 is the perspective view of magnetic links.

Specific embodiment

A kind of suspension permanent magnetic bearing, the first and second magnet ring 11,12 including same core arrangement, on the first and second magnet ring 11,12 Interconnecting piece respectively for determine part, moving part is connected, outer ring surface on 11 upper inner ring face of the first magnet ring, 111 place side and the second magnet ring 12 The magnetic pole at 121 places side is identical, and inside and outside anchor ring 111,121 is circular conical surface, and inner ring surface 111 is neighbouring and opposite with outer ring surface 121 Arrangement.

As shown in fig.1, the outer ring surface 121 of the inner ring surface 111 of the first magnet ring 11 and the second magnet ring 12 is circular conical surface, The repulsive force that second magnet ring 12 is subject to is decomposed into axial force and radial force perpendicular to its outer ring surface 121, the repulsive force, and radial force makes Second magnet ring 12 suspends, and axial force can constrain the axial position for the moving part being connected with the second magnet ring 12, reduces and the second magnetic The axial movement value of the connected moving part of ring 12, improves the stability of moving part operating.

Repulsion of second magnet ring, 12 part by the first magnet ring 11 in order to prevent, stablizes when the second magnet ring 12 being caused to operate Property it is poor, the inside and outside anchor ring 111,121 be parallel to each other and the two perpendicular on its anchor ring projection be overlapped, inside and outside anchor ring 111,121 is fully mated, it is ensured that stability when the 12 suspension work of the second magnet ring.

The repulsive force that second magnet ring 12 is subject to can be decomposed into axial force and radial force, the inside and outside anchor ring 111 of the application, 121 bus and the angled β of its axis institute are 20 °~70 °.

The bus of inside and outside anchor ring 111,121 and the angled β of its axis institute are 45 °, the repulsive force that the second magnet ring 12 is subject to point Solution at axial force it is identical with radial force size, it is ensured that while 31 stable suspersion of shaft, there is enough axial force constraint shafts 31 axial position reduces its axial shifting amount when shaft 31 works.

As shown in Fig. 3,4 and 5, first and second magnet ring 11,12 is that magnetic links 15 are spliced.

Part is determined and moving part is respectively electric motor end cap 32, machine shaft 31, the connection of the first magnet ring 11 as shown in Fig. 2, described Portion is connected with electric motor end cap 32, and the interconnecting piece of the second magnet ring 12 is connected with machine shaft 31.There is arranged for interval on machine shaft 31 First and second bearing 10,20, the first and second bearing 10,20 can be the suspension permanent magnetic bearing of the application, can also be by first Bearing 10 or second bearing 20 are set as traditional bearing, such as ball bearing or roller bearing, can further increase in this way Stability when motor operates.

It is below the specific mounting means of the first and second magnet ring 11,12, the interconnecting piece of the first magnet ring 11 is the first ring set 13, The annular groove for the first magnet ring 11 arrangement is offered on the inner wall of first ring set 13, the outer wall of the first ring set 13 radially stretches convex Connecting hole 131 is offered in portion；

The interconnecting piece of second magnet ring 12 is the second ring set 14, is offered on the outer wall of the second ring set 14 for 12 cloth of the second magnet ring The annular groove set, the second ring set 14 are fitted on machine shaft 31.

The annular groove is in closing, prevents the first magnet ring 11 or the second magnet ring 12 from falling off at work.

Claims

1. a kind of suspension permanent magnetic bearing, it is characterised in that: the first and second magnet ring (11,12) including same core arrangement, first and second Interconnecting piece on magnet ring (11,12) respectively for determine part, moving part is connected, side where the first magnet ring (11) upper inner ring face (111) and the The magnetic pole of side is identical where outer ring surface (121) on two magnet rings (12), and inside and outside anchor ring (111,121) is circular conical surface, inner ring surface (111) neighbouring and positioned opposite with outer ring surface (121).

2. suspension permanent magnetic bearing according to claim 1, it is characterised in that: the inside and outside anchor ring (111,121) is mutual Parallel and the two is overlapped perpendicular to the projection on its anchor ring.

3. suspension permanent magnetic bearing according to claim 2, it is characterised in that: the bus of inside and outside anchor ring (111,121) with The angled β of its axis institute is 20 °~70 °.

4. suspension permanent magnetic bearing according to claim 3, it is characterised in that: the bus of inside and outside anchor ring (111,121) with The angled β of its axis institute is 45 °.

5. suspension permanent magnetic bearing according to claim 1, it is characterised in that: first and second magnet ring (11,12) is Magnetic links (15) are spliced.

6. suspension permanent magnetic bearing according to claim 1, it is characterised in that: described to determine part and moving part is respectively motor side (32), machine shaft (31) are covered, the interconnecting piece of the first magnet ring (11) is connected with electric motor end cap (32), the connection of the second magnet ring (12) Portion is connected with machine shaft (31).

7. suspension permanent magnetic bearing according to claim 1, it is characterised in that: the interconnecting piece of the first magnet ring (11) is first Ring set (13) offers the annular groove for the first magnet ring (11) arrangement on the inner wall of the first ring set (13), the first ring set (13) Connecting hole (131) are offered on the protrusion that outer wall radially stretches.

8. suspension permanent magnetic bearing according to claim 1, it is characterised in that: the interconnecting piece of the second magnet ring (12) is second Ring set (14) offers the annular groove for the second magnet ring (12) arrangement, the second ring set (14) pressure on the outer wall of the second ring set (14) On machine shaft (31).

9. suspension permanent magnetic bearing according to claim 7 or 8, it is characterised in that: the annular groove is in closing.