CN206682163U - A kind of automatic balance type magnetic suspension bearing - Google Patents
A kind of automatic balance type magnetic suspension bearing Download PDFInfo
- Publication number
- CN206682163U CN206682163U CN201720442976.3U CN201720442976U CN206682163U CN 206682163 U CN206682163 U CN 206682163U CN 201720442976 U CN201720442976 U CN 201720442976U CN 206682163 U CN206682163 U CN 206682163U
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- magnet
- magnetic force
- magnetic
- shell
- force magnet
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- 239000000725 suspension Substances 0.000 title claims abstract description 25
- 238000007789 sealing Methods 0.000 claims abstract description 3
- 239000004020 conductor Substances 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000005484 gravity Effects 0.000 description 7
- 230000006872 improvement Effects 0.000 description 6
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The utility model discloses a kind of automatic balance type magnetic suspension bearing, wherein, shell has annular hollow cavity and an end face opening, and uniform intervals are provided with several mounting hole sites in annular hollow cavity, big magnetic force magnet and small magnetic force magnet use bar magnet, and quantity ratio is 1:5, big magnetic force magnet and small magnetic force magnet be installed circumferentially at corresponding in mounting hole site and N is extremely towards the center of circle, lead is arranged in the mounting hole site for installing big magnetic force magnet；Interior ring magnet is arranged at the center of shell, the outer ring of interior ring magnet is N poles, preceding magnetic sheet and rear magnetic sheet are separately positioned on the both ends of interior ring magnet, preceding magnetic sheet is fixedly mounted on the protecgulum for sealing shell open end, magnetic sheet is fixedly mounted on shell afterwards, and deep groove ball bearing is sleeved on the outside of shell.Relative to plain bearing, the utility model highlights the advantages that mechanical wear is small, energy consumption is low, noise is small, and when installation axle, solves the shortcomings that needing to look for orthocenter.
Description
Technical Field
The utility model relates to a magnetic suspension bearing, concretely relates to automatic balanced type magnetic suspension bearing.
Background
Compared with the traditional bearing, the magnetic suspension bearing has no mechanical contact, the rotor can run to a very high rotating speed, and the magnetic suspension bearing has the advantages of small mechanical wear, low energy consumption, small noise, long service life, no need of lubrication, no oil pollution and the like, and is particularly suitable for special environments such as high speed, vacuum, ultra-clean and the like. The magnetic suspension bearing has the advantages that the magnetic suspension bearing is far greater than a common bearing, and for many fields, the common bearing cannot realize the whole function because the friction force cannot meet the requirement or the precision is insufficient. At present, the magnetic suspension bearing in China starts late, the research depth is not enough and lags behind abroad, the magnetic suspension bearing in China has few types, is also in a theoretical research stage, and cannot be actually used. To overtake abroad, changing the situation is urgent.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an automatic balanced type magnetic suspension bearing for with inner ring magnet not with the shell contact and suspend near the center pin, and the complete machine is inside to be similar to tumbler principle.
In order to achieve the above purpose, the utility model adopts the following technical scheme to realize:
an automatic balance type magnetic suspension bearing comprises a front cover, a front magnetic plate, a lead block, a large magnetic force magnet, a small magnetic force magnet, an inner ring magnet, a rear magnetic plate, a shell and a deep groove ball bearing; wherein,
the shell is provided with a circular hollow cavity, one end face of the circular hollow cavity is opened, a plurality of mounting hole sites are uniformly arranged in the circular hollow cavity at intervals, the large magnetic force magnet and the small magnetic force magnet are strip magnets, the number ratio is 1:5, the large magnetic force magnet and the small magnetic force magnet are circumferentially arranged in the corresponding mounting hole sites, N poles of the large magnetic force magnet and the small magnetic force magnet face the circle center, and the lead block is arranged in the mounting hole site for mounting the large magnetic force magnet;
the inner ring magnet is arranged at the center of the shell, the outer ring of the inner ring magnet is an N pole, the front magnetic plate and the rear magnetic plate are respectively arranged at two ends of the inner ring magnet, the front magnetic plate is fixedly arranged on a front cover used for sealing the opening end face of the shell, the rear magnetic plate is fixedly arranged on the shell, and the deep groove ball bearing is sleeved on the outer side of the shell.
The utility model discloses further improvement lies in, and the quantity of big magnetic force magnet is 5, and the quantity of little magnetic force magnet is 25.
The utility model discloses further improvement lies in, interference fit between the outside of deep groove ball bearing and shell.
The utility model discloses a further improvement lies in, and big magnetic force magnet and little magnetic force magnet are permanent magnet or electro-magnet, and wherein, big magnetic force magnet's magnetic force is little magnetic force magnet's magnetic force triple.
The utility model discloses further improvement lies in that protecgulum, shell and inner ring magnet internal connection axle contact part adopt non-magnetic material to make.
The utility model discloses further improvement lies in, deep groove ball bearing is self-aligning ball bearing, self-aligning roller bearing, tapered roller bearing, thrust ball bearing, angular contact ball bearing or cylindrical roller bearing.
The utility model discloses have following advantage:
the utility model discloses an inlay lead block and a plurality of bar magnet in the installation hole site of shell, and the whole orientation centre of a circle department of the N utmost point of a plurality of bar magnet. The 5 degrees of freedom of the inner ring magnet are limited at the center, only one rotational degree of freedom is reserved for outputting and bearing the shaft, the outer ring of the inner ring magnet is an N pole and is mutually repelled with the bar magnets to be suspended at the shaft center, the purpose that the inner ring magnet is suspended near the central shaft is achieved by balancing the repulsive force of the annular bar magnets to the inner ring magnet and the gravity of the shaft, the lead block at the bottom is always sunk at the bottom of the whole machine due to the action of gravity, so that the large magnetic force magnet at the bottom plays a main supporting and suspending role, the whole body is made into a tumbler shape in the deep groove ball bearing, and the large magnetic force magnet is ensured to be positioned at the bottom of the magnetic suspension bearing to effectively suspend the inner ring magnet near the central shaft of the bearing. Compared with the traditional bearing, the friction of the bearing can be minimized by suspending the inner ring magnet near the central shaft.
Furthermore, the inner ring magnet can be suspended in the air by the principle that the like poles of the inner ring magnet and the 30 magnets on the outer ring repel each other, so that the inner ring magnet is not rubbed with the outside, and the purpose of greatly reducing the friction is achieved.
Furthermore, the inner ring magnet is in the same principle that like poles repel each other in the front-back direction as the front magnetic plate and the rear magnetic plate, so that the inner ring magnet does not rub the front magnetic plate and the rear magnetic plate, and friction during movement is further reduced.
Further, the outer shell of the newly developed bearing is arranged in the inner ring of the deep groove ball bearing in an interference fit mode, and due to the gravity of the bottom lead block, the whole body is in a tumbler state and exists in the inner portion of the outer bearing, and therefore the outer connecting shaft is convenient to install.
Further, 5 large magnetic force magnets and 25 small magnetic force magnets which are balanced with the magnetic force of the installation shaft are selected according to the mass of the installation shaft, and according to the force balance principle, the magnetic force of the 5 large magnetic force bearings is 3 times that of the 25 small magnetic force bearings, so that after the external shaft is installed, the shaft can be effectively balanced at a position close to the axis (the circle center), and fundamental guarantee is provided for the rotation of the shaft.
Further, big magnetic force magnet and little magnetic force magnet can be the permanent magnet, also can be the electro-magnet, select wantonly according to actual conditions, have enlarged this utility model's application range.
Further, the connecting shaft part inside the front cover, the shell and the inner ring magnet is made of non-magnetic conductive materials, so that the problem of magnetic interference between the magnets is effectively solved.
Further, outmost deep groove ball bearing also can be self-aligning ball bearing, self-aligning roller bearing, tapered roller bearing, thrust ball bearing, angular contact ball bearing and cylindrical roller bearing, and this can be according to the actual conditions free selection of using, more big further reduction the utility model discloses a make the degree of difficulty and improve application range.
To sum up, compare traditional bearing, the utility model discloses a suspend inner ring magnet near the center pin, can fall the minimum with the friction of bearing self, have advantages such as mechanical wear is little, the energy consumption is low, the small in noise, longe-lived, can be applicable to in special environment such as high-speed, vacuum.
Drawings
Fig. 1 is a schematic structural diagram of the automatic balancing type magnetic suspension bearing of the present invention.
Fig. 2 is a state diagram of the automatic balance type magnetic suspension bearing of the present invention during unloading.
Fig. 3 is a state diagram of the automatic balance type magnetic suspension bearing of the present invention during loading.
Fig. 4 is an exploded view of the present invention when loaded.
Fig. 5 is an exploded view from another perspective of the present invention when loaded.
In the figure: 1-front cover, 2-front magnetic plate, 3-lead block, 4-large magnetic magnet, 5-small magnetic magnet, 6-inner ring magnet, 7-rear magnetic plate, 8-shell and 9-deep groove ball bearing.
Detailed Description
The specific working conditions of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1 to 5, the utility model provides a pair of automatic balanced type magnetic suspension bearing evenly arranges 5 big magnetic force magnet 4 and 25 little magnetic force magnet 5 according to annular array, and 30 bar magnet's the N utmost point is towards the centre of a circle, and inside inner ring magnet 6 can suspend in the center pin position on the upper side with 30 bar magnet of outside because of the principle that homopolar repulsion mutually. Similarly, at the front and rear ends of the housing 8, the rear magnetic plate 7, the front magnetic plate 2 and the inner ring magnet 6 suspend the inner ring magnet 6 in the middle due to the principle that like poles repel each other, and the rear magnetic plate 7 and the front magnetic plate 2 are welded to the housing 8 and the front cover 1, respectively. During loading, according to the mass of the installation shaft, 5 large magnetic force magnets 4 capable of balancing magnetic force with the shaft weight are matched, due to the action of gravity, the installation shaft can be suspended at a position near the center of a circle, namely on a foot, the resultant force of repulsion force of 30 bar magnets to the inner ring magnets 6 is upward, the gravity of the installation shaft is downward, so that the upward repulsion force is balanced with the downward gravity, a balance point is reached, and the inner ring magnets 6 are suspended near the shaft center. Lead 3 is installed to 5 big magnetic force magnet 4 bottoms, and shell 8 is installed in deep groove ball bearing 9's inner circle, because lead 3's action of gravity, deep groove ball bearing 9's inner circle can remain lead 3 and 5 big magnetic force magnet 4 all the time and be in the bottom to can guarantee that 5 big magnetic force magnet 4 plays key effect to the suspension of counter shaft.
The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above, and it should be understood by those skilled in the art that the present invention is not limited by the above embodiments, but only by the principle of the present invention, and the present invention can be modified without departing from the spirit and scope of the present invention, and all of the modifications and improvements fall within the scope of the present invention.
Claims (6)
1. An automatic balance type magnetic suspension bearing is characterized by comprising a front cover (1), a front magnetic plate (2), a lead block (3), a large magnetic magnet (4), a small magnetic magnet (5), an inner ring magnet (6), a rear magnetic plate (7), a shell (8) and a deep groove ball bearing (9); wherein,
the shell (8) is provided with a circular hollow cavity, one end face of the circular hollow cavity is opened, a plurality of mounting hole sites are uniformly arranged in the circular hollow cavity at intervals, the large magnetic force magnet (4) and the small magnetic force magnet (5) are strip magnets, the number ratio of the large magnetic force magnet (4) to the small magnetic force magnet (5) is 1:5, the large magnetic force magnet (4) and the small magnetic force magnet (5) are circumferentially mounted in the corresponding mounting hole sites, N poles of the large magnetic force magnet (4) and the small magnetic force magnet (5) face the circle center, and the lead block (3) is;
the inner ring magnet (6) is arranged at the center of the shell (8), the outer ring of the inner ring magnet (6) is an N pole, the front magnetic plate (2) and the rear magnetic plate (7) are respectively arranged at two ends of the inner ring magnet (6), the front magnetic plate (2) is fixedly arranged on a front cover (1) used for sealing the opening end face of the shell (8), the rear magnetic plate (7) is fixedly arranged on the shell (8), and the deep groove ball bearing (9) is sleeved on the outer side of the shell (8).
2. The self-balancing magnetic suspension bearing according to claim 1, wherein the number of large magnetic force magnets (4) is 5, and the number of small magnetic force magnets (5) is 25.
3. The self-balancing magnetic suspension bearing according to claim 1, characterized in that the deep groove ball bearing (9) is in interference fit with the outside of the housing (8).
4. The self-balancing magnetic suspension bearing according to claim 1, wherein the large magnetic force magnet (4) and the small magnetic force magnet (5) are permanent magnets or electromagnets, wherein the magnetic force of the large magnetic force magnet is three times that of the small magnetic force magnet.
5. The self-balancing magnetic suspension bearing according to claim 1, wherein the contact portions of the connection shafts inside the front cover (1), the housing (8) and the inner ring magnet (6) are made of non-magnetic conductive material.
6. The self-balancing magnetic suspension bearing according to claim 1, characterized in that the deep groove ball bearing (9) is a self-aligning ball bearing, a self-aligning roller bearing, a tapered roller bearing, a thrust ball bearing, an angular contact ball bearing or a cylindrical roller bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720442976.3U CN206682163U (en) | 2017-04-25 | 2017-04-25 | A kind of automatic balance type magnetic suspension bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720442976.3U CN206682163U (en) | 2017-04-25 | 2017-04-25 | A kind of automatic balance type magnetic suspension bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206682163U true CN206682163U (en) | 2017-11-28 |
Family
ID=60400663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720442976.3U Expired - Fee Related CN206682163U (en) | 2017-04-25 | 2017-04-25 | A kind of automatic balance type magnetic suspension bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206682163U (en) |
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2017
- 2017-04-25 CN CN201720442976.3U patent/CN206682163U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171128 Termination date: 20180425 |
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| CF01 | Termination of patent right due to non-payment of annual fee |