CN208252600U - Magnetic suspension bearing - Google Patents
Magnetic suspension bearing Download PDFInfo
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- CN208252600U CN208252600U CN201820884185.0U CN201820884185U CN208252600U CN 208252600 U CN208252600 U CN 208252600U CN 201820884185 U CN201820884185 U CN 201820884185U CN 208252600 U CN208252600 U CN 208252600U
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- magnet steel
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- suspension bearing
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Abstract
The utility model provides a kind of magnetic suspension bearing, comprising: rear end cap, stator core and magnetic steel component；Rear end cap has first end face, the first cylindrical pockets are provided in first end face, stator core gabarit is cylinder, stator core is arranged in the first pockets, and the axis of stator core is overlapped with the axis of the first pockets, makes to form annular gap between the outer wall of stator core and the inner wall of the first pockets；Magnetic steel component includes at least two magnet steel, at least two magnet steel are arranged in annular gap, and it is successively uniformly distributed along the circumferential direction of annular gap, cross sectional shape of the magnet steel on the plane perpendicular to stator core axis is fan annular, and the center of circle for fanning annular is located on the axis of stator core.The utility model has system easy to process, the advantages of reducing production cost, and its performance and safety can be made to be improved.
Description
Technical field
The utility model relates to family's electro-technical field, in particular to a kind of magnetic suspension bearing.
Background technique
Existing axial backmixing magnetic suspension bearing mounting structure is incited somebody to action as shown in Figure 1, equipped with pockets on rear end cap 1
Stator core 2 is arranged in pockets, makes to form annular gap between stator core 2 and the inner wall of pockets, wherein such as
Shown in Fig. 2, magnetic steel component 3 is made of the magnet steel 31 that several shapes are cuboid, and magnetic steel component 3 is arranged in annular gap
In, ring is formed if the cuboid magnet steel 31 of dry plate radial magnetizing is arranged between stator core 2 and the inner wall of pockets
In shape gap.
It, need to be by the outer wall and pockets of stator core 2 in actual fabrication since the shape of magnet steel 31 is cuboid
Inner wall be processed into the shape of regular polygon so that the annular gap formed therebetween is located at what several magnet steel 31 matched
Regular polygon annular gap, and the uniformity to guarantee bearing air-gap field, the requirement to machining accuracy is very high, there is processing
The shortcomings that difficulty is big, high production cost.Simultaneously because the reason of regular polygon installation position, it is inevitably present between magnet steel 31
Compared with Multiple level, the magnetic flux in axial backmixing magnetic suspension bearing is reduced, and then leads to reduced performance, and is also easy to cause shake
Dynamic, safety is poor.
Utility model content
The main purpose of the utility model is to provide a kind of magnetic suspension bearings, are not only convenient for processing system, reduce life
Cost is produced, and its performance and safety can be made to be improved.
The utility model provides a kind of magnetic suspension bearing, comprising: rear end cap, stator core and magnetic steel component；
The rear end cap has first end face, and the first cylindrical pockets, institute are provided in the first end face
Stator core gabarit is stated as cylinder, the stator core is arranged in first pockets, and the stator core
Axis be overlapped with the axis of first pockets, make the interior of the outer wall of the stator core and first pockets
Annular gap is formed between wall；
The magnetic steel component includes at least two magnet steel, and at least two magnet steel are arranged in the annular gap,
And it is successively uniformly distributed along the circumferential direction of the annular gap, the magnet steel is on the plane perpendicular to the stator core axis
Cross sectional shape be fan annular, and it is described fan annular the center of circle be located on the axis of the stator core.
More preferably, at least two magnet steel are in turn connected to form an entirety.
More preferably, the magnetic steel component includes support frame；
Support frame as described above is the torus being arranged in the annular gap, and the magnet steel is arranged in support frame as described above
On.
More preferably, the mounting hole that shape matches with the magnet steel, the magnetic are provided on the side wall of support frame as described above
Steel is fixed in the mounting hole.
More preferably, the quantity of the mounting hole is equal with the quantity of the magnet steel, and corresponds.
More preferably, support frame as described above is integrally formed by way of encapsulating with the magnet steel.
It more preferably, further include attachment screw；
It is provided with connection bump on the periphery wall of support frame as described above, connection through-hole is provided in the connection bump,
Connecting screw hole corresponding with the connection lead to the hole site is provided on the rear end cap, the attachment screw can pass through described
Connection through-hole is simultaneously threaded in the connecting screw hole, and support frame as described above is fixed on the rear end cap.
More preferably, be provided in the first end face of the rear end cap can accommodate the connection bump connection it is recessed
Slot, the connecting screw hole are arranged on the bottom wall of the connecting groove.
More preferably, the quantity of the connection bump is at least two, and more than two connection bumps are along support frame as described above
Circumferential direction it is uniformly distributed, the connecting groove is equal with the quantity of the connection bump, and corresponds, the attachment screw
Quantity is equal with the quantity of the connection bump, and corresponds.
More preferably, support frame as described above has second end face, be connected to when support frame as described above by the attachment screw described in
When on rear end cap, the second end face is in the same plane with the first end face.
More preferably, the connection bump has the third end face vertical with the connection axis of through-hole, the third end
Face is in the same plane with the second end face；
The second pockets being connected to the connection through-hole are provided on the third end face, when the attachment screw is worn
When crossing the connection through-hole and being threaded in the connecting screw hole, the head of screw of the attachment screw is integrally located at described
In two pockets.
The magnetic suspension bearing of the offer of the utility model, using the magnet steel perpendicular to the flat of the stator core axis
Cross sectional shape on face is fan annular, and the center of circle of the fan annular is located at the technical side on the axis of the stator core
Case is not only convenient for processing system, reduces production cost, and its performance and safety can be made to be improved.
Detailed description of the invention
Attached drawing described herein is used to provide a further understanding of the present invention, and constitutes one of the utility model
Point, the exemplary embodiment of the utility model and the description thereof are used to explain the utility model, does not constitute to the utility model
Improper restriction.In the accompanying drawings:
Fig. 1 is magnetic bearing structure schematic diagram in the prior art；
Fig. 2 is the magnetic steel component structural schematic diagram in Fig. 1；
Fig. 3 is one example structure schematic diagram of magnetic suspension bearing of the utility model；
Fig. 4 is left view of the Fig. 3 in no drive end bearing bracket state；
Fig. 5 is Fig. 3 decomposition diagram；
Fig. 6 is the magnetic steel component schematic diagram in Fig. 3；
Fig. 7 is schematic diagram of the Fig. 6 in no support frame；
Fig. 8 is the pump rear end cap partial cutaway schematic of Fig. 3；
Fig. 9 is the magnetic steel component partial cutaway schematic in Fig. 3.
In figure: 1, rear end cap；11, first end face；12, the first pockets；13, connecting screw hole；14, connecting groove；2,
Stator core；3, magnetic steel component；31, magnet steel；32, support frame；33, connection bump；34, through-hole is connected；35, second end face；36,
Third end face；37, the second pockets；4, drive end bearing bracket；5, attachment screw.
Specific embodiment
It is specific below in conjunction with the utility model to keep the purpose of this utility model, technical solution and advantage clearer
Technical solutions of the utility model are clearly and completely described in embodiment and corresponding attached drawing.Obviously, described embodiment
It is only the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, this field
Those of ordinary skill's every other embodiment obtained without making creative work, belongs to the utility model
The range of protection.
It should be noted that the specification and claims of the utility model and term " first " in above-mentioned attached drawing,
" second " etc. is to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that in this way
The data used are interchangeable under appropriate circumstances, so as to the embodiments of the present invention described herein can in addition to
Here the sequence other than those of diagram or description is implemented.
As shown in FIG. 3 to 7, a kind of magnetic suspension bearing, comprising: rear end cap 1, stator core 2 and magnetic steel component 3.Rear end cap 1
With first end face 11, the first cylindrical pockets 12 are provided in first end face 11,2 gabarit of stator core is cylinder
Shape, stator core 2 is arranged in the first pockets 12, and the axis of the axis of stator core 2 and the first pockets 12
It is overlapped, makes to form annular gap between the outer wall of stator core 2 and the inner wall of the first pockets 12.Magnetic steel component 3 includes
At least two magnet steel 31, at least two magnet steel 31 are arranged in annular gap, and successively uniform along the circumferential direction of annular gap
It lays, cross sectional shape of the magnet steel 31 on the plane perpendicular to 2 axis of stator core is fan annular, and fans the center of circle position of annular
In on the axis of stator core 2.At least two magnet steel using such technical solution, such as Fig. 6, shown in 7, in magnetic steel component 3
31 can be collectively formed similar to cylindric structure, therefore 2 outer wall of stator core and 12 inner wall of the first pockets can add
Work is realized at cylinder to match with magnetic steel component 3, compared with the existing technology in by 2 outer wall of stator core and first accommodate it is recessed
The shape of the higher regular polygon of precision is processed as on 12 inner wall of slot, the present embodiment has production easy to process, thereby reduces
The advantages of cost of manufacture.Simultaneously because cross sectional shape of the magnet steel 31 on the plane perpendicular to 2 axis of stator core is fan annular,
And the center of circle for fanning annular is located on the axis of stator core 2, and the gap between adjacent magnet steel 31 can be made more uniform, into
And the magnetic flux in magnetic suspension bearing and stock utilization are improved, biasing rate is increased, the performance of magnetic suspension bearing is obtained
It improves.Compared with the existing technology, magnet steel 31 is not likely to produce loosening after completion of installation, thereby reduces noise, improves safety
Property.It should be noted that as shown in Fig. 3,5, in actual operation, after completing the installation of stator core 2 and magnetic steel component 3,
Drive end bearing bracket 4 can be mounted in first end face 11, stator core 2 and magnetic steel component 3 are sealed in the first pockets 12.
Further, at least two magnet steel 31 are in turn connected to form an entirety, to realize 3 modularization of magnetic steel component.
In actual use, change bearing power output can be reached by replacing different magnetic steel components 3, it is new without redesigning and processing
Axial bearing arrangement effect, wherein different magnetic steel components 3 refers to the quantity of magnet steel 31 possessed by magnetic steel component 3 not
Together, the quantity of the magnet steel 31 such as in magnetic steel component 3 can be 8 pieces, 12 pieces, 16 pieces etc., in actual use can be as needed
It is selected.Since 3 outer dimension of magnetic steel component does not change, do not need to carry out any repair to the size of other parts
Change.
At least two magnet steel 31 are in turn connected to form the concrete mode of an entirety, can be as shown in Figure 4,5, 6, magnetic steel component
3 include support frame 32, and support frame 32 is the torus being arranged in annular gap, is arranged on the side wall of support frame 32 tangible
Mounting hole that shape and magnet steel 31 match (not shown go out), magnet steel 31 is fixed in mounting hole.Wherein, the quantity and magnetic of mounting hole
The quantity of steel 31 is equal, and corresponds.Further, support frame 32 is integrally formed by way of encapsulating with magnet steel 31, i.e.,
The first uniformly arrangement positioning in annular gap by magnet steel 31, then entirety is fixed with epoxy resin encapsulated, at this time epoxy resin
Solidification forms support frame 32, using such technical solution, improves the degree of modularity of magnetic steel component 3.It should be noted that
The concrete mode that at least two magnet steel 31 are in turn connected to form an entirety is not limited to that, can also use any other energy
Enough realize the technical solution of goal of the invention.
As a kind of implementable solution, as shown in figure 3, further including attachment screw 5.As shown in Fig. 4,5,6,9, support frame
It is provided with connection bump 33 on 32 periphery wall, connection through-hole 34 is provided in connection bump 33, as shown in Figure 9, rear
Connecting screw hole 13 corresponding with connection 34 position of through-hole is provided on end cap 1, attachment screw 5 can pass through connection through-hole 34 simultaneously
It is threaded in connecting screw hole 13, support frame 32 is fixed on rear end cap 1.It is able to ascend the positioning of magnetic steel component 3 in this way
Precision, and can guarantee the effect of the tightness between magnetic steel component 3 and rear end cap 1.
Further, as shown in figure 8, being provided with the company that can accommodate connection bump 33 in the first end face 11 of rear end cap 1
Groove 14 is connect, connecting screw hole 13 is arranged on the bottom wall of connecting groove 14.Specifically, the quantity of connection bump 33 is at least two
A, more than two connection bumps 33 are uniformly distributed along the circumferential direction of support frame 32, the quantity phase of connecting groove 14 and connection bump 33
Deng, and correspond, the quantity of attachment screw 5 is equal with the quantity of connection bump 33, and corresponds.It in this way can be by only
Magnetic steel component 3 is fixed on by few two attachment screws 5 ensure that the reliability connected therebetween on rear end cap 1.
In actual fabrication, since drive end bearing bracket 4 need to be mounted in first end face 11, by stator core 2 and magnet steel group
Part 3 is sealed in the first pockets 12, therefore as shown in figure 9, support frame 32 has second end face 35, when support frame 32 passes through
When attachment screw 5 is connected on rear end cap 1, second end face 35 is in the same plane with first end face 11, can be avoided in this way
When drive end bearing bracket 4 to be mounted in first end face 11, drive end bearing bracket 4 and support frame 32 generate interference.
Further, as shown in figure 9, connection bump 33 has the third end face 36 vertical with the axis for connecting through-hole 34,
Third end face 36 is in the same plane with second end face 35, is provided on third end face 36 and is connect the second of the connection of through-hole 34
Pockets 37, when attachment screw 5 passes through connection through-hole 34 and is threaded in connecting screw hole 13, the spiral shell of attachment screw 5
Ailhead is integrally located in the second pockets 37.It is can be avoided in this way when drive end bearing bracket 4 to be mounted in first end face 11, front end
Lid 4 can generate interference with the head of screw of connection bump 33 or attachment screw 5.
Above embodiments make the utility model have system easy to process, reduce production cost, and can make its performance
The advantages of being improved with safety.
The above description is only the embodiments of the present invention, is not intended to limit the utility model, for this field
Technical staff for, various modifications and changes may be made to the present invention.Within the spirit and principle of the utility model,
Any modification, equivalent replacement, improvement and so on should be included within the scope of the claims of the utility model.
Claims (11)
1. a kind of magnetic suspension bearing, it is characterised in that:
It include: rear end cap (1), stator core (2) and magnetic steel component (3)；
The rear end cap (1) has first end face (11), and cylindrical first is provided on the first end face (11) and is accommodated
Groove (12), stator core (2) gabarit are cylinder, and the stator core (2) is arranged in first pockets
(12) in, and the axis of the stator core (2) is overlapped with the axis of first pockets (12), makes the stator iron
Annular gap is formed between the outer wall of core (2) and the inner wall of first pockets (12)；
The magnetic steel component (3) includes at least two magnet steel (31), and at least two magnet steel (31) are arranged in the circular ring shape
In gap, and it is successively uniformly distributed along the circumferential direction of the annular gap, and the magnet steel (31) is perpendicular to the stator core
(2) cross sectional shape in the plane of axis is fan annular, and the center of circle of the fan annular is located at the axis of the stator core (2)
On line.
2. magnetic suspension bearing according to claim 1, it is characterised in that:
At least two magnet steel (31) are in turn connected to form an entirety.
3. magnetic suspension bearing according to claim 2, it is characterised in that:
The magnetic steel component (3) includes support frame (32)；
Support frame as described above (32) is the torus being arranged in the annular gap, and the magnet steel (31) is arranged in the support
On frame (32).
4. magnetic suspension bearing according to claim 3, it is characterised in that:
The mounting hole that shape matches with the magnet steel (31), the magnet steel are provided on the side wall of support frame as described above (32)
(31) it fixes in the mounting hole.
5. magnetic suspension bearing according to claim 4, it is characterised in that:
The quantity of the mounting hole is equal with the quantity of the magnet steel (31), and corresponds.
6. magnetic suspension bearing according to claim 3, it is characterised in that:
Support frame as described above (32) is integrally formed by way of encapsulating with the magnet steel (31).
7. according to magnetic suspension bearing described in claim 3 to 6 any one, it is characterised in that:
It further include attachment screw (5)；
It is provided with connection bump (33) on the periphery wall of support frame as described above (32), is provided with connection on the connection bump (33)
Through-hole (34) is provided with connecting screw hole (13) corresponding with connection through-hole (34) position, institute on the rear end cap (1)
The connection through-hole (34) can be passed through and be threaded in the connecting screw hole (13) by stating attachment screw (5), will be described
Support frame (32) is fixed on the rear end cap (1).
8. magnetic suspension bearing according to claim 7, it is characterised in that:
Be provided in the first end face (11) of the rear end cap (1) can accommodate the connection bump (33) connection it is recessed
Slot (14), the connecting screw hole (13) are arranged on the bottom wall of the connecting groove (14).
9. magnetic suspension bearing according to claim 8, it is characterised in that:
The quantity of the connection bump (33) is at least two, and more than two connection bumps (33) are along support frame as described above (32)
Circumferential direction it is uniformly distributed, the connecting groove (14) is equal with the quantity of the connection bump (33), and corresponds, the company
The quantity for connecing screw (5) is equal with the quantity of the connection bump (33), and corresponds.
10. magnetic suspension bearing according to claim 7, it is characterised in that:
Support frame as described above (32) has second end face (35), when support frame as described above (32) are connected to by the attachment screw (5)
When on the rear end cap (1), the second end face (35) is in the same plane with the first end face (11).
11. magnetic suspension bearing according to claim 10, it is characterised in that:
The connection bump (33) has the third end face (36) vertical with the connection axis of through-hole (34), the third end
Face (36) is in the same plane with the second end face (35)；
The second pockets (37) being connected to connection through-hole (34) are provided on the third end face (36), when the company
Connect screw (5) across the connection through-hole (34) and be threaded in the connecting screw hole (13) it is interior when, the attachment screw (5)
Head of screw be integrally located in second pockets (37).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820884185.0U CN208252600U (en) | 2018-06-07 | 2018-06-07 | Magnetic suspension bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820884185.0U CN208252600U (en) | 2018-06-07 | 2018-06-07 | Magnetic suspension bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208252600U true CN208252600U (en) | 2018-12-18 |
Family
ID=64653974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820884185.0U Active CN208252600U (en) | 2018-06-07 | 2018-06-07 | Magnetic suspension bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208252600U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108591259A (en) * | 2018-06-07 | 2018-09-28 | 珠海格力电器股份有限公司 | Magnetic suspension bearing |
-
2018
- 2018-06-07 CN CN201820884185.0U patent/CN208252600U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108591259A (en) * | 2018-06-07 | 2018-09-28 | 珠海格力电器股份有限公司 | Magnetic suspension bearing |
| CN108591259B (en) * | 2018-06-07 | 2023-12-08 | 珠海格力电器股份有限公司 | Magnetic suspension bearing |
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