CN218913492U

CN218913492U - Magnetic fluid lubrication type magnetic bearing

Info

Publication number: CN218913492U
Application number: CN202223069058.0U
Authority: CN
Inventors: 卫胡茂; 张磊; 郭承俊; 李婧; 梁嘉芯; 姜宇航; 朱志江; 刘麟; 林孜奕; 胡瑞; 胡银花; 许春霞
Original assignee: Nanchang Institute of Technology
Current assignee: Nanchang Institute of Technology
Priority date: 2022-11-19
Filing date: 2022-11-19
Publication date: 2023-04-25
Anticipated expiration: 2032-11-19

Abstract

The utility model relates to the technical field of bearings, in particular to a magnetic fluid lubrication type magnetic bearing, which comprises a bearing body, wherein the bearing body consists of a rotating seat, a fixed seat and a ball structure, and the ball structure is arranged between the rotating seat and the fixed seat; the bearing body is sleeved with a protecting sleeve for protecting the bearing body, the protecting sleeve is sleeved on the rotating seat, the bottom of the protecting sleeve is connected with the fixing seat in a sliding manner, and an external shaft rod is arranged in the protecting sleeve. The magnetic ring and the storage tank have good adsorption effect on the magnetic fluid, so that the magnetic fluid can lubricate the balls, and meanwhile, the protective sleeve can protect the impurities on the outer side from entering the ball structure, so that the normal running of the balls is ensured, the loss of other impurities on the balls is avoided, and the service life of the bearing is prolonged.

Description

Magnetic fluid lubrication type magnetic bearing

Technical Field

The utility model relates to the technical field of bearings, in particular to a magnetic fluid lubrication type magnetic bearing.

Background

Bearings are an important component in contemporary mechanical devices. Its main function is to support the mechanical rotator, reduce the friction coefficient in the course of its movement and ensure its rotation accuracy. The magnetic fluid bearing uses conductive fluid as lubricant and has sliding bearing with external magnetic field.

Most of the magnetic fluid sliding bearings in the current market have fewer rolling bearing structures, so that the magnetic fluid is not widely applied. Accordingly, one skilled in the art would provide a magnetic fluid lubricated magnetic bearing to address the problems set forth in the background above.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a magnetic fluid lubrication type magnetic bearing, which comprises a bearing body, wherein the bearing body consists of a rotating seat, a fixed seat and a ball structure, and the ball structure is arranged between the rotating seat and the fixed seat;

the bearing body is sleeved with a protecting sleeve for protecting the bearing body, the protecting sleeve is sleeved on the rotating seat, the bottom of the protecting sleeve is connected with the fixing seat in a sliding manner, and an external shaft rod is arranged in the protecting sleeve.

Preferably: the fixing seat comprises a seat body, side edges are arranged on the inner side of the bottom of the seat body and the wall on the outer side of the bottom of the seat body, a sliding groove is arranged on the side edges, the sliding groove is in sliding connection with a protective sleeve positioned in the sliding groove, the bottom of the protective sleeve is positioned in the sliding groove, and the protective sleeve is sleeved on the rotating seat.

Preferably: the inner side of the protective sleeve is provided with an inner ring, the outer side of the protective sleeve is provided with an outer ring, and the bottoms of the inner ring and the outer ring are respectively positioned in sliding grooves arranged on the inner side and the outer side of the side edge.

Preferably: the top still is equipped with a plurality of dead levers in the lag, and the dead lever inserts and establishes in the fixed orifices of seting up at the rotation seat upper surface.

Preferably: the rotary seat and the seat body are provided with sliding rails on one sides close to each other, the sliding rails are in rolling connection with balls arranged in the sliding rails, a storage tank is further arranged on one side, located on the sliding rails, of the rotary seat and the seat body, and magnetic fluid is added into the storage tank.

Preferably: the rotary seat is characterized in that a mounting groove is formed in the position, away from one side of the rotary seat body, of the seat body, corresponding to the storage groove, and a plurality of through grooves are formed between the mounting groove and the storage groove.

Preferably: and a magnetic ring is also arranged in the mounting groove, and a sealing gasket is arranged on the outer side of the magnetic ring.

The utility model has the technical effects and advantages that:

the magnetic ring and the storage tank have good adsorption effect on the magnetic fluid, so that the magnetic fluid can lubricate the balls, and meanwhile, the protective sleeve can protect the impurities on the outer side from entering the ball structure, so that the normal running of the balls is ensured, the loss of other impurities on the balls is avoided, and the service life of the bearing is prolonged.

Drawings

FIG. 1 is a perspective view of a magnetic fluid lubricated magnetic bearing according to an embodiment of the present application;

FIG. 2 is a second perspective view of a magnetohydrodynamic lubrication magnetic bearing according to an embodiment of the present disclosure;

FIG. 3 is an exploded view of a bearing body and a boot in a magnetohydrodynamic lubrication magnetic bearing according to an embodiment of the present application;

FIG. 4 is a front view of a bearing body in a magnetohydrodynamic lubricated magnetic bearing according to an embodiment of the present application;

FIG. 5 is a schematic structural view of a protective sleeve in a magnetohydrodynamic lubrication type magnetic bearing according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a fixing seat in a magnetic fluid lubrication type magnetic bearing according to an embodiment of the present application;

FIG. 7 is a schematic view of a structure of a housing in a magnetohydrodynamic lubrication type magnetic bearing according to an embodiment of the present disclosure;

fig. 8 is a schematic structural diagram of a rotating seat in a magnetic fluid lubrication type magnetic bearing according to an embodiment of the present application.

In the figure:

1. a bearing body; 2. a protective sleeve; 11. a rotating seat; 12. a fixing seat; 13. a ball structure; 14. a slide rail; 15. a storage tank; 16. a mounting groove; 18. a through groove; 19. a magnetic ring; 10. a sealing gasket; 111. a fixing hole; 121. a base; 122. a side edge; 123. a chute; 21. an inner ring; 22. an outer ring; 23. and a fixing rod.

Detailed Description

The utility model will be described in further detail with reference to the drawings and the detailed description. The embodiments of the utility model have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.

Examples

Referring to fig. 1 to 8, in this embodiment, a magnetic fluid lubrication type magnetic bearing is provided, which includes a bearing body 1, a protecting sleeve 2 for protecting the bearing body 1 is sleeved on the bearing body 1, wherein the bearing body 1 is composed of a rotating seat 11, a fixed seat 12 and a ball structure 13, the ball structure 13 is arranged between the rotating seat 11 and the fixed seat 12, so that after the fixed seat 12 is fixed, the rotating seat 11 can rotate with the fixed seat 12 through the ball structure 13, the protecting sleeve 2 is sleeved on the rotating seat 11, the bottom of the protecting sleeve 2 is slidably connected with the fixed seat 12, an external shaft lever is installed in the protecting sleeve 2, and the shaft lever, the protecting sleeve 2 and the rotating seat 11 form an integral structure, so that the shaft lever rotates relative to the fixed seat 12;

in addition, as the protective sleeve 2 can seal the bearing body 1, impurities can be placed in the ball structure 13 of the bearing body 1, the influence of the impurities on the ball structure 13 is avoided, the rolling effect is kept, meanwhile, the ball structure 13 is lubricated by magnetic fluid, the protective sleeve 2 also ensures the cleaning in the magnetic fluid, and the lubricating effect is ensured;

the fixed seat 12 comprises a seat body 121, side edges 122 are arranged on the inner side wall and the outer side wall of the bottom of the seat body 121, a sliding groove 123 is arranged on the side edges 122, the sliding groove 123 is in sliding connection with a protective sleeve 2 positioned in the sliding groove, the bottom of the protective sleeve 2 is positioned in the sliding groove 123, and the protective sleeve 2 is sleeved on the rotating seat 11, so that the sealing of the bearing body 1 is realized, and the protection of the internal structure is realized;

the inner side of the protective sleeve 2 is provided with an inner ring 21, the outer side of the protective sleeve is provided with an outer ring 22, the bottoms of the inner ring 21 and the outer ring 22 are respectively positioned in sliding grooves 123 arranged on the inner side and the outer side of the side edge 122, meanwhile, the inner top of the protective sleeve 2 is also provided with a plurality of fixing rods 23, the fixing rods 23 are inserted into fixing holes 111 formed in the upper surface of the rotating seat 11, the fixing rods 23 are inserted between the fixing holes and the fixing holes, and the protective sleeve 2 can be dismounted;

after the shaft lever is arranged in the protective sleeve 2, when the shaft lever rotates, the shaft lever drives the protective sleeve 2 to rotate, the protective sleeve 2 drives the rotating seat 11 to rotate, and meanwhile, the fixed seat 12 is fixed, so that the rotating seat 11 and the fixed seat 12 mutually rotate through the ball structure 13, and the normal use of the shaft lever is ensured;

the sliding rails 14 are arranged on the sides, close to each other, of the rotating seat 11 and the seat body 121, the sliding rails 14 are in rolling connection with balls arranged in the sliding rails, the storage grooves 15 are further arranged on the sides, located on the sliding rails 14, of the rotating seat 11 and the seat body 121, magnetic fluid is added into the storage grooves 15, so that the balls and the magnetic fluid play a good role in lubrication, the mounting grooves 16 are formed in positions, corresponding to the storage grooves 15, on the sides, far away from each other, of the rotating seat 11 and the seat body 121, a plurality of through grooves 18 are formed between the mounting grooves 16 and the storage grooves 15, magnetic rings 19 are further arranged in the mounting grooves 16, and sealing gaskets 10 are arranged on the outer sides of the magnetic rings 19;

the magnetic ring 19 can have an adsorption effect on the magnetic fluid, so that the magnetic fluid can be adsorbed in the storage tank 15, the lubrication effect of the magnetic fluid is ensured, the sealing gasket 10 seals the mounting groove 16, and the outflow of the magnetic fluid is avoided;

when the ball rolling device is used, magnetic fluid is injected into the storage tank 15 in the seat body 121 and is adsorbed by the magnetic ring 19, when the ball is contacted with the magnetic fluid in the seat body 121, the surface of the ball may be adhered with the magnetic fluid, and the adhered magnetic fluid is adsorbed by the magnetic ring 19 on the rotary seat 11 in the rolling process of the ball, so that the magnetic fluid exists in the rotary seat 11 and the two storage tanks 15 in the seat body 121 in the continuous rolling process of the ball, and the upper side surfaces of the ball have good lubricating effect.

The magnetic ring 19 and the storage tank 15 have good adsorption effect on the magnetic fluid, so that the lubricating effect of the magnetic fluid on the balls is ensured, meanwhile, the protective sleeve 2 can protect the impurities on the outer side from entering the ball structure 13, ensure the normal running of the balls, avoid the loss of other impurities on the balls, and improve the service life of the bearing.

It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art and which are included in the embodiments of the present utility model without the inventive step, are intended to be within the scope of the present utility model. Structures, devices and methods of operation not specifically described and illustrated herein, unless otherwise indicated and limited, are implemented according to conventional means in the art.

Claims

1. The utility model provides a magnetic fluid lubrication type magnetic bearing, includes bearing body (1), and bearing body (1) comprises rotation seat (11), fixing base (12) and ball structure (13), sets up ball structure (13), its characterized in that between rotation seat (11) and fixing base (12):

the bearing body (1) is sleeved with a protective sleeve (2) for protecting the bearing body (1), the protective sleeve (2) is sleeved on the rotating seat (11), the bottom of the protective sleeve is connected with the fixed seat (12) in a sliding manner, and an external shaft rod is arranged in the protective sleeve (2).

2. The magnetic fluid lubrication type magnetic bearing according to claim 1, wherein the fixing base (12) comprises a base body (121), side edges (122) are respectively arranged on the inner side wall and the outer side wall of the bottom of the base body (121), sliding grooves (123) are formed in the side edges (122), the sliding grooves (123) are slidably connected with a protective sleeve (2) located in the sliding grooves, the bottom of the protective sleeve (2) is located in the sliding grooves (123), and the protective sleeve (2) is sleeved on the rotating base (11).

3. The magnetic fluid lubrication type magnetic bearing according to claim 2, wherein the inner side of the protecting sleeve (2) is provided with an inner ring (21), the outer side of the protecting sleeve is provided with an outer ring (22), and bottoms of the inner ring (21) and the outer ring (22) are respectively positioned in sliding grooves (123) arranged on the inner side and the outer side of the side edge (122).

4. A magnetic fluid lubrication type magnetic bearing according to claim 3, wherein the top part in the protecting sleeve (2) is further provided with a plurality of fixing rods (23), and the fixing rods (23) are inserted into fixing holes (111) formed in the upper surface of the rotating seat (11).

5. The magnetic fluid lubrication type magnetic bearing according to claim 1, wherein sliding rails (14) are arranged on the side, close to each other, of the rotating seat (11) and the seat body (121), the sliding rails (14) are in rolling connection with balls arranged in the sliding rails, a storage groove (15) is further formed in the side, located on the sliding rails (14), of the rotating seat (11) and the seat body (121), and magnetic fluid is added into the storage groove (15).

6. The magnetohydrodynamic lubrication type magnetic bearing according to claim 5, wherein the rotary seat (11) and the seat body (121) are provided with a mounting groove (16) at a position corresponding to the storage groove (15) on a side far from each other, and a plurality of through grooves (18) are provided between the mounting groove (16) and the storage groove (15).

7. The magnetohydrodynamic lubrication type magnetic bearing according to claim 6, wherein a magnetic ring (19) is further installed in the installation groove (16), and a sealing gasket (10) is arranged on the outer side of the magnetic ring (19).