CN221097203U - Plane friction magnetic stress bearing group - Google Patents
Plane friction magnetic stress bearing group Download PDFInfo
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- CN221097203U CN221097203U CN202323215265.7U CN202323215265U CN221097203U CN 221097203 U CN221097203 U CN 221097203U CN 202323215265 U CN202323215265 U CN 202323215265U CN 221097203 U CN221097203 U CN 221097203U
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- inner ring
- outer ring
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- bearing
- hard alloy
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- 229910045601 alloy Inorganic materials 0.000 claims abstract description 24
- 239000000956 alloy Substances 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims description 16
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 claims description 5
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 5
- KPLQYGBQNPPQGA-UHFFFAOYSA-N cobalt samarium Chemical compound [Co].[Sm] KPLQYGBQNPPQGA-UHFFFAOYSA-N 0.000 claims description 3
- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 claims description 3
- 229910000859 α-Fe Inorganic materials 0.000 claims description 3
- -1 aluminum nickel cobalt Chemical compound 0.000 claims 1
- 230000005347 demagnetization Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 229910000828 alnico Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
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- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The utility model discloses a plane friction magnetic stress bearing group, which relates to the technical field of permanent magnet bearings, and comprises an upper bearing and a lower bearing, wherein the upper bearing and the lower bearing are arranged in pairs; the upper bearing comprises a first outer ring and a first inner ring, the lower bearing comprises a second outer ring and a second inner ring, the first outer ring and the first inner ring are arranged oppositely, the opposite surface of the first outer ring and the first inner ring, the opposite surface of the second outer ring and the second inner ring are provided with a plurality of magnets and a plurality of hard alloy blocks, the magnetic poles of the magnets between the opposite surfaces of the first outer ring and the first inner ring are opposite, and the magnetic poles of the magnets between the opposite surfaces of the second outer ring and the second inner ring are the same. According to the planar friction magnetic stress bearing group, the micro-gaps are reserved between the first outer ring and the first inner ring and between the second outer ring and the second inner ring, so that demagnetization caused by temperature rise of a magnet due to mutual friction can be avoided, and the planar friction magnetic stress bearing group is simple in structure, convenient to install and low in manufacturing and use cost.
Description
Technical Field
The utility model relates to the technical field of permanent magnet bearings, in particular to a plane friction magnetic stress bearing group.
Background
In mechanical devices, bearings are a common component. The bearing adopted when the rotating shaft is horizontally installed is usually a thrust bearing; among thrust bearings, there are two forms: one is to place the ball between two retainer rings with holes in the middle, which belongs to the rolling thrust bearing; the other is that two check rings with holes in the middle have a certain thickness, high-hardness materials with wear resistance and higher surface finish are inlaid or integrally burned between the contact surfaces of the two check rings, the outer check ring of the bearing pair is connected with the base, the rotating shaft is connected with the inner check ring of the bearing pair, when the central shaft is subjected to axial force and needs to rotate, the shoulder or the end surface of the shaft end (the thrust bearing is arranged on the end surface of the shaft) transmits the axial force to the thrust bearing, so that the axial movement of the central shaft can be limited, and the friction resistance during rotation can be greatly reduced.
The existing fluid driving tool for turbines and the like is characterized in that a central shaft is vertical, bases are fixedly connected to two ends of the central shaft, a rotating cylinder is sleeved on the central shaft, the rotating cylinder is required to rotate around the central shaft continuously during working, planar sliding friction thrust bearings are additionally arranged at two ends of the rotating cylinder for guaranteeing the service life of the rotating cylinder and reducing friction torque during rotation, an outer ring of the thrust bearings is fixed on the bases, and an inner ring of the thrust bearings is fixed on the rotating cylinder. But the thrust bearing installed at the lower portion thereof is still worn out more rapidly due to the heavier weight of the rotary drum.
How to develop a planar friction magnetic stress bearing set, and to avoid the situation that the lower bearing is worn at a higher speed when the bearing set is vertically installed, is a technical problem to be solved urgently by those skilled in the art.
Disclosure of utility model
The utility model aims to provide a plane friction magnetic stress bearing group which solves the problems listed in the background art.
In order to solve the technical problems, the utility model adopts the following technical scheme:
The utility model relates to a plane friction magnetic stress bearing group, which comprises an upper bearing and a lower bearing, wherein the upper bearing and the lower bearing are arranged in pairs;
The upper bearing comprises a first outer ring and a first inner ring, the lower bearing comprises a second outer ring and a second inner ring, the first outer ring and the first inner ring are arranged opposite to each other, a plurality of magnets and a plurality of hard alloy blocks are arranged on the opposite surfaces of the first outer ring and the first inner ring and the opposite surfaces of the second outer ring and the second inner ring, the magnet magnetic poles between the opposite surfaces of the first outer ring and the first inner ring are opposite to each other, and the magnet magnetic poles between the opposite surfaces of the second outer ring and the second inner ring are the same.
Preferably, the first outer ring, the first inner ring, the second outer ring and the second inner ring are coaxial and have the same specification and size.
Preferably, a plurality of magnet mounting holes are formed in the first outer ring, the first inner ring, the second outer ring and the second inner ring in a manner of being opposite to each other, and the hard alloy blocks and the magnet mounting holes are distributed at intervals.
Preferably, the number of the hard alloy blocks arranged on the first outer ring and the second inner ring is the same, and the number of the hard alloy blocks arranged on the first inner ring and the second outer ring is the same.
Preferably, the surface of the hard alloy block is higher than the surfaces of the first outer ring and the first inner ring, and the surfaces of the second outer ring and the second inner ring.
Preferably, the material of magnet adopts neodymium iron boron material, alnico material, samarium cobalt material or ferrite material.
Compared with the prior art, the utility model has the beneficial technical effects that:
The plane friction magnetic stress bearing group can reduce or even offset sinking force of the bearing piece due to dead weight through resultant force formed by repulsive force of the lower bearing and attractive force of the upper bearing, reduces abrasion of the plane sliding friction bearing, and meanwhile, micro gaps are reserved between the first outer ring and the first inner ring and between the second outer ring and the second inner ring, so that demagnetization caused by temperature rise of a magnet due to mutual friction can be avoided, and the plane friction magnetic stress bearing group is simple in structure, convenient to install and low in manufacturing and use cost.
Drawings
The utility model is further described with reference to the following description of the drawings.
FIG. 1 is a schematic diagram of an assembly of a planar friction magnetic stress bearing assembly according to the present utility model;
FIG. 2 is a schematic view of the installation positions of the hard alloy block and the magnet according to the utility model.
Reference numerals illustrate: 1. an upper bearing; 101. a first outer race; 102. a second inner ring; 2. a lower bearing; 201. a second outer race; 202. a second inner ring; 3. a magnet; 4. a hard alloy block; 5. an upper base; 6. a central shaft; 7. a lower base; 8. a rotary drum.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
As shown in fig. 1-2, a planar tribomagnetic stress bearing group comprises an upper bearing 1 and a lower bearing 2, wherein the upper bearing 1 and the lower bearing 2 are arranged in pairs;
The upper bearing 1 comprises a first outer ring 101 and a first inner ring 102, the lower bearing 2 comprises a second outer ring 201 and a second inner ring 202, the first outer ring 101 and the first inner ring 102, the second outer ring 201 and the second inner ring 202 are arranged respectively, a plurality of hard alloy blocks 4 are arranged on the opposite surfaces of the first outer ring 101 and the first inner ring 102 and the opposite surfaces of the second outer ring 201 and the second inner ring 202 respectively, magnet mounting holes are arranged on the first outer ring 101 and the first inner ring 102 and on the second outer ring 201 and on the second inner ring 202 respectively, magnets 3 are arranged in the magnet mounting holes, a plurality of hard alloy blocks 4 and a plurality of magnets 3 are distributed at intervals, magnets with the same inner size as the magnet mounting holes are arranged between every two adjacent hard alloy blocks, and the two ends of each magnet are flush with the upper end face and the lower end face of the upper bearing and/or the lower bearing, so that the structure is simple, the installation is convenient, and the manufacturing and use cost is low.
Specifically, the magnetic poles of the magnets 3 between the opposite surfaces of the first outer ring 101 and the first inner ring 102 are opposite, so that attractive force can be generated between the first outer ring and the first inner ring, and further, pulling force can be generated between the first outer ring and the first inner ring conveniently.
Specifically, the magnetic poles of the magnets 3 between the opposite surfaces of the second outer ring 201 and the second inner ring 202 are the same, so that a repulsive force can be generated between the second outer ring and the second inner ring, and further, a thrust force can be conveniently generated between the second outer ring and the second inner ring.
Specifically, the openings of the magnet mounting holes on the first outer ring 101 and the first inner ring 102 are arranged opposite to each other, so that the opposite poles of the magnets are prevented from being attracted to each other and separated from the magnet mounting holes on the first outer ring 101 and the first inner ring 102;
The second outer ring 201 is opposite to the opening of the magnet mounting hole on the second inner ring 202, and the opening of the magnet mounting hole is opposite to each other, so that the repulsive force generated between homopoles of the magnets can be prevented, and the magnets are separated from the second outer ring or the second inner ring.
Specifically, the first outer ring 101 and the first inner ring 102, and the second outer ring 201 and the second inner ring 202 are coaxial and have the same specification and size.
Specifically, the first outer ring 101, the first inner ring 102, the second outer ring 201, and the second inner ring 202 may be annular stainless steel discs with a certain thickness.
Specifically, the number of the cemented carbide pieces 4 disposed on the first outer ring 101 and the second inner ring 202 is the same, and the number of the cemented carbide pieces 4 disposed on the first inner ring 102 and the second outer ring 201 is the same.
Specifically, the number of the hard alloy blocks 4 arranged on the first outer ring 101 and the second inner ring 202 or the first inner ring 102 and the second outer ring 201 is an odd number, the number of the hard alloy blocks 4 arranged on the first outer ring 101 and the second inner ring 202 or the first inner ring 102 and the second outer ring 201 is an even number, and the hard alloy blocks arranged in parity between the opposite surfaces of the first outer ring and the first inner ring and between the second outer ring and the second inner ring ensure that when the upper and/or lower bearings rotate, the situation that the hard alloy blocks on the upper and/or lower bearings collide with edges is avoided, so that friction can be reduced and rotation is smoother.
Specifically, the surface of the hard alloy block 4 is higher than the surfaces of the first outer ring 101 and the first inner ring 102, and the surfaces of the second outer ring 201 and the second inner ring 202, so that when the upper and/or lower bearings rotate, the first outer ring and the first inner ring or the second outer ring and the second inner ring are prevented from directly contacting to generate excessive temperature, and the magnetic force of the magnet in the magnet mounting hole is reduced.
Specifically, the height of the plane of the hard alloy block protruding out of the disc surface of the annular disc is not less than 1mm.
Specifically, the material of magnet 3 adopts neodymium iron boron material, alnico material, samarium cobalt material or ferrite material, and the preferential magnet of selecting the neodymium iron boron material, machining performance is good, operating temperature is high, and neodymium iron boron magnetism iron is hard, stable performance, sexual valence relative altitude.
Example 1
The upper base 5 and the lower base 7 are respectively arranged at the upper end and the lower end of the central shaft 6 which is vertically arranged, and the rotary cylinder 8 is sleeved on the outer peripheral surface of the central shaft 6;
The upper surface of the first outer ring 101 is fixedly mounted on the lower surface of the upper base 5, the lower surface of the first inner ring 102 is fixedly connected with the upper surface of the rotary drum 8, the lower surface of the rotary drum 8 is connected with the upper surface of the second inner ring 202, and the lower surface of the second outer ring 201 is connected with the upper surface of the lower base 7;
The micro-gaps are reserved between the first outer ring 101 and the first inner ring 102, between the second outer ring 201 and the second inner ring 202, so that the friction resistance during rotation of the upper and/or lower bearings can be effectively reduced, the heating value during rotation of the upper and/or lower bearings is reduced, and further, the demagnetization phenomenon caused by temperature rise of the magnet can be effectively avoided;
When the rotary cylinder 8 is sleeved on the outer peripheral surface of the central shaft which is vertically arranged, the rotary cylinder 8 sinks under the action of gravity, at this time, the second outer ring 201 of the lower bearing 2 and the magnet 3 on the second inner ring 202 push the rotary cylinder 8 upwards due to the repulsive force generated by the same magnetic poles, so that the rotary cylinder is far away from the upper surface of the lower base, and meanwhile, the first outer ring 101 of the upper bearing 1 and the magnet 3 on the first inner ring 102 generate attractive force due to the opposite magnetic poles, so that the rotary cylinder 8 is pulled upwards, and the rotary cylinder is close to the lower surface of the upper base;
the resultant force formed by the repulsive force of the lower bearing 2 and the attractive force of the upper bearing 1 lightens or even counteracts the sinking force of the rotary cylinder 8 caused by self weight, lightens the abrasion of the plane sliding friction bearing when the rotary cylinder 8 rotates under the action of external force, and ensures the smoothness of the rotary cylinder during rotation.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The above embodiments are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the protection scope defined by the claims of the present utility model without departing from the design spirit of the present utility model.
Claims (6)
1. The utility model provides a plane friction magnetic stress bearing group which characterized in that: the device comprises an upper bearing (1) and a lower bearing (2), wherein the upper bearing (1) and the lower bearing (2) are arranged in pairs;
The upper bearing (1) comprises a first outer ring (101) and a first inner ring (102), the lower bearing (2) comprises a second outer ring (201) and a second inner ring (202), the first outer ring (101) and the first inner ring (102), the second outer ring (201) and the second inner ring (202) are oppositely arranged, a plurality of magnets (3) and a plurality of hard alloy blocks (4) are arranged on the opposite surfaces of the first outer ring (101) and the first inner ring (102), the magnetic poles of the magnets (3) between the opposite surfaces of the first outer ring (101) and the first inner ring (102) are opposite, and the magnetic poles of the magnets (3) between the opposite surfaces of the second outer ring (201) and the second inner ring (202) are the same.
2. The planar tribomagnetic stress bearing set according to claim 1, wherein: the first outer ring (101), the first inner ring (102) and the second outer ring (201) are coaxial with the second inner ring (202) and have the same specification and size.
3. The planar tribomagnetic stress bearing set according to claim 2, wherein: a plurality of magnet mounting holes are respectively formed in the first outer ring (101), the first inner ring (102), the second outer ring (201) and the second inner ring (202), and the hard alloy blocks (4) and the magnet mounting holes are distributed at intervals.
4. A planar tribomagnetic stress bearing group according to claim 3, characterized in that: the number of the hard alloy blocks (4) arranged on the first outer ring (101) is the same as that of the hard alloy blocks (4) arranged on the second inner ring (202), and the number of the hard alloy blocks (4) arranged on the first inner ring (102) is the same as that of the hard alloy blocks arranged on the second outer ring (201).
5. The planar friction magnetic stress bearing assembly of claim 4, wherein: the surface of the hard alloy block (4) is higher than the surfaces of the first outer ring (101) and the first inner ring (102), and the surfaces of the second outer ring (201) and the second inner ring (202).
6. The planar friction magnetic stress bearing assembly of claim 5, wherein: the magnet (3) is made of neodymium iron boron material, aluminum nickel cobalt material, samarium cobalt material or ferrite material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323215265.7U CN221097203U (en) | 2023-11-28 | 2023-11-28 | Plane friction magnetic stress bearing group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323215265.7U CN221097203U (en) | 2023-11-28 | 2023-11-28 | Plane friction magnetic stress bearing group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221097203U true CN221097203U (en) | 2024-06-07 |
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ID=91328276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323215265.7U Active CN221097203U (en) | 2023-11-28 | 2023-11-28 | Plane friction magnetic stress bearing group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221097203U (en) |
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2023
- 2023-11-28 CN CN202323215265.7U patent/CN221097203U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant |