Viscosity-adjustable magnetofluid lubricating oil film bearing

Abstract

The invention belongs to the technical field of adjustable lubrication, and particularly relates to a viscosity-adjustable magnetofluid lubricating oil film bearing which comprises a first shaft washer, a second shaft washer is arranged at the center of the first shaft washer, a third shaft washer is arranged on the outer side of the second shaft washer, and a sliding groove is formed in the third shaft washer. The states of an adjusting ball and an adjusting spring are changed through a magnet exciting coil, lubricating oil is stored in a first oil storage cavity in advance, when the adjusting ball does not make contact with an oil inlet, the size of the oil inlet is controlled by controlling the amplitude of the adjusting ball through the magnet exciting coil, and the lubricating oil enters the inner side of a clamping sleeve through the oil inlet and then flows into an oil flow pipe; lubricating oil can directly flow into a sliding groove of the third shaft washer through an oil flow pipe, so that the second steel ball shaft washer and the third shaft washer are lubricated; the threaded sleeve vertically moves through the threaded rod and sleeves the shaft ring, and then lubricating oil enters the first oil storage cavity through the flow dredging opening and the first penetrating hole, so that it is guaranteed that the bearing can continuously conduct high-strength work, and the service life is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of adjustable lubrication, and particularly to a magnetorheological fluid lubricating oil film bearing with adjustable viscosity. Background Art

[0002] A magnetorheological fluid lubricating oil film bearing is an advanced bearing technology that uses magnetorheological fluid as a lubricating medium. It is different from traditional lubricating oil film bearings. Traditional bearings use liquid oil films to reduce friction and wear, while magnetorheological fluid lubricating oil film bearings utilize the properties of magnetorheological fluid to achieve lubrication and friction control.

[0003] Magnetorheological fluid is a fluid in which micron-sized magnetic particles are suspended in a liquid medium. Generally, in order to reduce friction, a magnetorheological fluid lubricating oil film bearing continuously lubricates the bearing with lubricating oil, and the amount of lubricating oil flow cannot be controlled. If the working pressure of the bearing is not high, it will cause waste of lubricating oil materials.

[0004] To solve the above problems, we propose a magnetorheological fluid lubricating oil film bearing with adjustable viscosity. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems in the background art, and to propose a magnetorheological fluid lubricating oil film bearing with adjustable viscosity.

[0006] To achieve the above purpose, the present invention adopts the following technical solution: A magnetorheological fluid lubricating oil film bearing with adjustable viscosity, including a first shaft ring. A second shaft ring is provided at the center of the first shaft ring. A third shaft ring is provided outside the second shaft ring. The third shaft ring is provided with a sliding groove. A plurality of steel balls are provided on the inner side wall of the sliding groove. All the plurality of steel balls are slidably connected to the outer side wall of the second shaft ring and are in contact with the inner side wall of the sliding groove. The first shaft ring is fixedly sleeved on the outer side wall of the third shaft ring. A second oil storage cavity is provided inside the first shaft ring. A plurality of second through holes are provided outside the first shaft ring. A plurality of third through holes are provided outside the third shaft ring. A plurality of openings are provided on the inner side wall of the sliding groove. The plurality of third through holes communicate with the plurality of openings respectively. The inner side walls of the plurality of second through holes are fixedly connected with oil flow pipes. The oil flow pipes extend to the openings through the third through holes. An excitation coil is fixedly sleeved on the outer side wall of the third shaft ring. The excitation coil is located on the left side of the oil flow pipe. A shaft ring sleeve is fixedly connected to the outer side wall of the first shaft ring. A first oil storage cavity is provided inside the shaft ring sleeve. A plurality of first through holes are provided outside the shaft ring sleeve. A clamping sleeve is provided on the inner side walls of the plurality of first through holes. The clamping sleeve is provided with an oil inlet. An oil adjusting spring is fixedly connected to the inner side wall of the clamping sleeve. The end of the adjusting spring is fixedly connected with an oil adjusting ball. The outer side of the adjusting ball is in contact with the inner side wall of the oil inlet.

[0007] In the above-mentioned magnetorheological fluid lubricating oil film bearing with adjustable viscosity, an oil injection sleeve is provided on the outer side of the shaft ring sleeve. A motor is provided at the bottom of the oil injection sleeve. The driving end of the motor is fixedly connected with a reinforcing column. A threaded rod is fixedly connected to the outer side wall of the reinforcing column. A threaded sleeve is fixedly connected to the bottom of the oil injection sleeve. The threaded rod is in threaded connection with the inner side wall of the threaded sleeve. The inner side wall of the oil injection sleeve is in contact with the outer side wall of the shaft ring sleeve.

[0008] In the above-mentioned magnetorheological fluid lubricating oil film bearing with adjustable viscosity, a storage cavity three is provided inside the oil injection sleeve. An oil filling port is provided on the outer side of the oil injection sleeve. The oil filling port is communicated with the storage cavity three. A plurality of flow guiding ports are provided on the inner side wall of the oil injection sleeve. The plurality of flow guiding ports are in contact with the first through hole.

[0009] In the above-mentioned magnetorheological fluid lubricating oil film bearing with adjustable viscosity, a plurality of steel balls are evenly arranged on the inner side wall of the sliding groove. A plurality of the second through holes are evenly arranged on the outer side wall of the first shaft ring. A plurality of the third through holes are evenly arranged on the outer side wall of the third shaft ring. A plurality of the openings are evenly arranged on the inner side wall of the sliding groove. A plurality of the first through holes are evenly arranged on the outer side of the shaft ring sleeve.

[0010] In the above-mentioned magnetorheological fluid lubricating oil film bearing with adjustable viscosity, the diameter of the threaded rod is equal to the inner diameter of the threaded sleeve. The inner diameter of the oil injection sleeve is equal to the outer diameter of the shaft ring sleeve.

[0011] In the above-mentioned magnetorheological fluid lubricating oil film bearing with adjustable viscosity, a plurality of flow guiding ports are evenly arranged on the inner side wall of the oil injection sleeve. The diameter of the plurality of flow guiding ports is larger than the diameter of the first through hole.

[0012] In the above-mentioned magnetorheological fluid lubricating oil film bearing with adjustable viscosity, the adjusting spring, the adjusting ball and the excitation coil are all made of iron. The diameter of the plurality of the second through holes is equal to the diameter of the oil flow pipe. The diameter of the plurality of the first through holes is equal to the diameter of the clamping sleeve. The plurality of the first through holes, the second through holes and the openings are on the same horizontal line. The diameter of the adjusting ball is larger than the inner side wall of the oil inlet. The bottom of the clamping sleeve is in contact with the top of the oil flow pipe.

[0013] Compared with the existing technology, the advantages of the present magnetorheological fluid lubricating oil film bearing with adjustable viscosity are as follows:

[0014] 1. By changing the states of the adjusting ball and the adjusting spring through the excitation coil, the lubricating oil is stored in the storage cavity one in advance. When the adjusting ball is not in contact with the oil inlet, the size of the oil inlet is controlled by the amplitude of the excitation coil to control the adjusting ball. The lubricating oil will enter the inside of the clamping sleeve through the oil inlet, and then flow into the oil flow pipe. The lubricating oil will directly flow into the sliding groove of the third shaft ring through the oil flow pipe, so as to lubricate the steel ball, the second shaft ring and the third shaft ring.

[0015] 2. The threaded sleeve is vertically moved by the threaded rod to sleeved the shaft ring sleeve, and then the lubricating oil will enter the first oil storage cavity through the flow-diverting port and the first perforation, so as to ensure that the bearing can continuously work under high intensity and extend its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The front view of a magnetorheological fluid lubricating oil film bearing with adjustable viscosity proposed by the present invention;

[0017] Figure 2 The partial side sectional view of a magnetorheological fluid lubricating oil film bearing with adjustable viscosity proposed by the present invention;

[0018] Figure 3 The partial front sectional view of a magnetorheological fluid lubricating oil film bearing with adjustable viscosity proposed by the present invention;

[0019] Figure 4 The partial left view of a magnetorheological fluid lubricating oil film bearing with adjustable viscosity proposed by the present invention;

[0020] Figure 5 The front sectional view of this cartridge sleeve.

[0021] In the figure: 1 first shaft ring, 2 shaft ring sleeve, 3 oil injection sleeve, 4 oil filling port, 5 threaded sleeve, 6 threaded rod, 7 reinforcing column, 8 motor, 9 first perforation, 10 cartridge sleeve, 11 first oil storage cavity, 12 oil flow pipe, 13 second oil storage cavity, 14 excitation coil, 15 second shaft ring, 16 steel ball, 17 third shaft ring, 18 second perforation, 19 adjusting ball, 20 adjusting spring. DETAILED DESCRIPTION OF THE INVENTION

[0022] The following embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0023] Refer to Figures 1-5, A magnetic fluid lubricating oil film bearing with adjustable viscosity, including a first shaft ring 1. At the center of the first shaft ring 1, there is a second shaft ring 15. Outside the second shaft ring 15, there is a third shaft ring 17. The third shaft ring 17 is provided with a sliding groove. The inner side wall of the sliding groove is provided with a plurality of steel balls 16. The plurality of steel balls 16 are all slidably connected to the outer side wall of the second shaft ring 15 and are in contact with the inner side wall of the sliding groove. The first shaft ring 1 is fixedly sleeved on the outer side wall of the third shaft ring 17. Inside the first shaft ring 1, there is a second oil storage cavity 13. Outside the first shaft ring 1, there are a plurality of second through holes 18. Outside the third shaft ring 17, there are a plurality of third through holes. The inner side wall of the sliding groove is provided with a plurality of openings. The plurality of third through holes communicate with the plurality of openings respectively. The inner side wall of the plurality of second through holes 18 is fixedly connected with an oil flow pipe 12. The oil flow pipe 12 extends to the opening through the third through hole. The outer side wall of the third shaft ring 17 is fixedly sleeved with an exciting coil 14. The exciting coil 14 is located on the left side of the oil flow pipe 12. The outer side wall of the first shaft ring 1 is fixedly connected with a shaft sleeve 2. Inside the shaft sleeve 2, there is a first oil storage cavity 11. Outside the shaft sleeve 2, there are a plurality of first through holes 9. The inner side wall of the plurality of first through holes 9 is provided with a clamping sleeve 10. The clamping sleeve 10 is provided with an oil inlet. The inner side wall of the clamping sleeve 10 is fixedly connected with an oil adjusting spring 20. The end of the adjusting spring 20 is fixedly connected with an oil adjusting ball 19. The outer side of the adjusting ball 19 is in contact with the inner side wall of the oil inlet. The plurality of steel balls 16 are evenly arranged on the inner side wall of the sliding groove. The plurality of second through holes 18 are evenly arranged on the outer side wall of the first shaft ring 1. The plurality of third through holes are evenly arranged on the outer side wall of the third shaft ring 17. The plurality of openings are evenly arranged on the inner side wall of the sliding groove. The plurality of first through holes 9 are evenly arranged outside the shaft sleeve 2. The adjusting spring 20, the adjusting ball 19, and the exciting coil 14 are all made of iron. The diameters of the plurality of second through holes 18 are equal to the diameter of the oil flow pipe 12. The diameters of the plurality of first through holes 9 are equal to the diameter of the clamping sleeve 10. The plurality of first through holes 9, the second through holes 18, and the openings are on the same horizontal line. The diameter of the adjusting ball 19 is larger than the inner side wall of the oil inlet. The bottom of the clamping sleeve 10 is in contact with the top of the oil flow pipe 12. Iron is one of the most common magnetic metals. Its crystal structure can form strong magnetization under an external magnetic field, so it is widely used in manufacturing equipment such as permanent magnets and electromagnets. Iron is the most typical ferromagnetic material, with a relatively high magnetic permeability and magnetization intensity. Under an external magnetic field, iron can be easily magnetized and maintain a strong magnetism, and iron is also very sensitive to magnetism. The exciting coil 14 is an electromagnetic coil used to generate a magnetic field, usually wound by a conductive material. Its main function is to excite or enhance the magnetic field around it through the magnetic field generated by the current in the wire. By changing the state of the adjusting ball 19 and the adjusting spring 20 through the exciting coil 14, the lubricating oil is stored in the first oil storage cavity 11 in advance. When the adjusting ball 19 is not in contact with the oil inlet, the size of the oil inlet is controlled by the amplitude of the exciting coil 14 to control the adjusting ball 19. The lubricating oil will enter the inside of the clamping sleeve 10 through the oil inlet and then flow into the oil flow pipe 12. The lubricating oil will directly flow into the sliding groove of the third shaft ring 17 through the oil flow pipe 12.Thus, lubrication operations can be carried out on the steel ball 16, the second race 15 and the third race 17. By removing the oil flow pipe 12, the lubrication area and speed can be increased. In this way, part of the lubricating oil will be stored in the second oil storage cavity 13, and the lubricating oil will continuously lubricate the steel ball 16, the second race 15 and the third race 17 through the second perforation 18 and the opening.,

[0024] An oil injection sleeve 3 is provided on the outer side of the race sleeve 2. A motor 8 is provided at the bottom of the oil injection sleeve 3. The driving end of the motor 8 is fixedly connected with a reinforcing column 7. The outer side wall of the reinforcing column 7 is fixedly connected with a threaded rod 6. The bottom of the oil injection sleeve 3 is fixedly connected with a threaded sleeve 5. The threaded rod 6 is threadedly connected with the inner side wall of the threaded sleeve 5. The inner side wall of the oil injection sleeve 3 is in contact with the outer side wall of the race sleeve 2. A third oil storage cavity is provided in the oil injection sleeve 3. An oil filling port 4 is provided on the outer side of the oil injection sleeve 3. The oil filling port 4 is communicated with the third oil storage cavity. A plurality of flow-diverting ports are provided on the inner side wall of the oil injection sleeve 3. The plurality of flow-diverting ports are in contact with the first perforation 9. The diameter of the threaded rod 6 is equal to the inner diameter of the threaded sleeve 5. The inner diameter of the oil injection sleeve 3 is equal to the outer diameter of the race sleeve 2. The plurality of flow-diverting ports are uniformly arranged on the inner side wall of the oil injection sleeve 3. The diameter of the plurality of flow-diverting ports is larger than the diameter of the first perforation 9. If the lubricating oil in the bearing is used up, first remove the cartridge sleeve 10, then insert the race sleeve 2 into the oil injection sleeve 3, and then inject the lubricating oil into the oil injection sleeve 3 through the oil filling port 4 so that the lubricating oil is stored in the third oil storage cavity. Then, drive the reinforcing column 7 to rotate through the motor 8, so that the threaded sleeve 5 moves vertically through the threaded rod 6 to hold the race sleeve 2. Subsequently, the lubricating oil will enter the first oil storage cavity 11 through the flow-diverting ports and the first perforation 9, thus ensuring that the bearing can continuously work under high intensity and extending its working life.

[0025] The working principle of the present invention:

[0026] The exciting coil 14 is an electromagnetic coil used to generate a magnetic field, usually wound by a conductive material. Its main function is to excite or enhance the magnetic field around it through the magnetic field generated by the current in the wire. By changing the state of the adjusting ball 19 and the adjusting spring 20 through the exciting coil 14, the lubricating oil is stored in the first oil storage cavity 11 in advance. When the adjusting ball 19 does not contact the oil inlet, the size of the oil inlet is controlled by adjusting the amplitude of the adjusting ball 19 by the exciting coil 14. The lubricating oil will enter the inner side of the cartridge sleeve 10 through the oil inlet, and then flow into the oil flow pipe 12. The lubricating oil will directly flow into the sliding groove of the third race 17 through the oil flow pipe 12, thus carrying out lubrication operations on the steel ball 16, the second race 15 and the third race 17. By removing the oil flow pipe 12, the lubrication area and speed can be increased. In this way, part of the lubricating oil will be stored in the second oil storage cavity 13, and the lubricating oil will continuously lubricate the steel ball 16, the second race 15 and the third race 17 through the second perforation 18 and the opening;

[0027] Take out the card sleeve 10. Insert the shaft collar sleeve 2 into the re-lubricating sleeve 3, and then inject lubricating oil into the re-lubricating sleeve 3 through the oil filling port 4 so that the lubricating oil is stored in the third oil storage cavity. Then drive the strengthening column 7 to rotate through the motor 8, so that the threaded sleeve 5 moves vertically through the threaded rod 6 and slews the shaft collar sleeve 2. Subsequently, the lubricating oil will enter the first oil storage cavity 11 through the flow-diverting port and the first perforation 9, thereby ensuring that the bearing can continuously work under high intensity and extending its working life.

[0028] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A magnetic fluid lubricating oil film bearing with adjustable viscosity, comprising a shaft ring (1), characterized in that: A shaft ring 2 (15) is provided at the center of the shaft ring 1 (1), a shaft ring 3 (17) is provided on the outer side of the shaft ring 2 (15), a sliding groove is provided on the inner side wall of the sliding groove, a plurality of steel balls (16) are provided, the plurality of steel balls (16) are all slidably connected to the outer side wall of the shaft ring 2 (15) and contact the inner side wall of the sliding groove, the shaft ring 1 (1) is fixedly sleeved on the outer side wall of the shaft ring 3 (17), an oil storage cavity 2 (13) is provided in the shaft ring 1 (1), a plurality of through holes 2 (18) are provided on the outer side of the shaft ring 1 (1), a plurality of through holes 3 are provided on the outer side of the shaft ring 3 (17), a plurality of openings are provided on the inner side wall of the sliding groove, a plurality of through holes 3 are respectively communicated with the plurality of openings, and a plurality of inner side walls of the plurality of through holes 2 (18) are fixedly connected with oil storage cavities 2 (13) and 3. The oil flow tube (12) extends to the opening through the perforation three, the outer wall of the shaft ring three (17) is fixedly sleeved with an excitation coil (14), and the excitation coil (14) is located on the left side of the oil flow tube (12). The outer wall of the shaft ring one (1) is fixedly connected with the shaft ring sleeve (2), and the shaft ring sleeve (2) is provided with an oil storage cavity one (11). The outer side of the shaft ring sleeve (2) is provided with a plurality of perforations one (9), and the inner side walls of the plurality of perforations one (9) are provided with a clamping sleeve (10), and the clamping sleeve (10) is provided with an oil inlet. The inner side wall of the clamping sleeve (10) is fixedly connected with an oil regulating spring (20), and the end of the regulating spring (20) is fixedly connected with an oil regulating ball (19), and the outer side of the regulating ball (19) contacts the inner side wall of the oil inlet.

2. The magnetic fluid lubricating oil film bearing with adjustable viscosity according to claim 1, characterized in that: An oil injection sleeve (3) is provided on the outer side of the shaft ring sleeve (2), a motor (8) is provided at the bottom of the oil injection sleeve (3), a reinforcing column (7) is fixedly connected to the driving end of the motor (8), a threaded rod (6) is fixedly connected to the outer wall of the reinforcing column (7), a threaded sleeve (5) is fixedly connected to the bottom of the oil injection sleeve (3), the threaded rod (6) is threadedly connected to the inner wall of the threaded sleeve (5), and the inner wall of the oil injection sleeve (3) is in contact with the outer wall of the shaft ring sleeve (2).

3. The magnetic fluid lubricating oil film bearing with adjustable viscosity according to claim 2, characterized in that: The oil filling sleeve (3) is provided with an oil storage cavity three, the outer side of the oil filling sleeve (3) is provided with a refueling port (4), the refueling port (4) is communicated with the oil storage cavity three, and the inner side wall of the oil filling sleeve (3) is provided with a plurality of drainage ports, and the plurality of drainage ports are in contact with the perforation one (9).

4. The magnetic fluid lubricating oil film bearing with adjustable viscosity according to claim 1, characterized in that: A plurality of steel balls (16) are evenly arranged on the inner wall of the sliding groove, a plurality of the second through-holes (18) are evenly arranged on the outer wall of the shaft ring (1), a plurality of the third through-holes are evenly arranged on the outer wall of the shaft ring (17), a plurality of the openings are evenly arranged on the inner wall of the sliding groove, and a plurality of the first through-holes (9) are evenly arranged on the outer side of the shaft ring sleeve (2).

5. The magnetic fluid lubricating oil film bearing with adjustable viscosity according to claim 2, characterized in that: The diameter of the threaded rod (6) is equal to the diameter of the inner side of the threaded sleeve (5), and the inner diameter of the oil injection sleeve (3) is equal to the diameter of the outer side of the shaft ring sleeve (2).

6. The magnetic fluid lubricating oil film bearing with adjustable viscosity according to claim 3, characterized in that: A plurality of drainage openings are evenly arranged on the inner side wall of the oil injection sleeve (3), and the diameters of the plurality of drainage openings are larger than the diameter of the first perforation (9).

7. The magnetic fluid lubricating oil film bearing with adjustable viscosity according to claim 1, characterized in that: The adjusting spring (20), adjusting ball (19) and excitation coil (14) are all made of iron. The diameter of the plurality of perforations (18) is equal to the diameter of the oil flow tube (12). The diameter of the plurality of perforations (9) is equal to the diameter of the sleeve (10). The plurality of perforations (9), perforations (18) and openings are located on the same horizontal line. The diameter of the adjusting ball (19) is larger than the inner wall of the oil inlet. The bottom of the sleeve (10) is in contact with the top of the oil flow tube (12).

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