CN113323960A - Elastic support tilting pad magnetic liquid double-floating thrust bearing - Google Patents
Elastic support tilting pad magnetic liquid double-floating thrust bearing Download PDFInfo
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- CN113323960A CN113323960A CN202110499060.2A CN202110499060A CN113323960A CN 113323960 A CN113323960 A CN 113323960A CN 202110499060 A CN202110499060 A CN 202110499060A CN 113323960 A CN113323960 A CN 113323960A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
- F16C17/06—Sliding-contact bearings for exclusively rotary movement for axial load only with tiltably-supported segments, e.g. Michell bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
- F16C17/047—Sliding-contact bearings for exclusively rotary movement for axial load only with fixed wedges to generate hydrodynamic pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/0408—Passive magnetic bearings
- F16C32/0423—Passive magnetic bearings with permanent magnets on both parts repelling each other
- F16C32/0427—Passive magnetic bearings with permanent magnets on both parts repelling each other for axial load mainly
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/022—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using dampers and springs in combination
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N1/00—Constructional modifications of parts of machines or apparatus for the purpose of lubrication
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Fluid Mechanics (AREA)
- Support Of The Bearing (AREA)
- Sliding-Contact Bearings (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention discloses a magnetic-liquid double-floating thrust bearing with a spring-supported tilting pad, which comprises a thrust disc, a thrust pad and a support ring, wherein an inner magnetic ring is arranged in the thrust disc, a plurality of elastic support components which can reciprocate up and down are arranged in the circumferential direction of the support ring, liquid is filled in the support ring, the periphery of the elastic support components can deform, the thrust pad is a spherical fulcrum thrust pad, a thrust pad magnetic block is arranged in the thrust pad, the thrust pad and the elastic support components are correspondingly arranged and arranged at the upper end of the thrust pad, and the bottom of the thrust pad is in tangent fit with the upper end surface of the elastic support component through a spherical end to form the spherical fulcrum spring-supported tilting pad. The bearing provided by the invention can generate enough magnetic force in the axial direction, can make up for the deficiency of the liquid film force generated in the axial direction, the wave spring and the pad surface form a spring support tilting pad system which can play a role of load balancing, and an oil cavity in the wave spring forms extrusion oil and shearing oil to form oil film damping, so that the bearing can play a role of vibration reduction, and the reliability and the stability of the bearing can be obviously improved.
Description
Technical Field
The invention belongs to the technical field of thrust bearings, and particularly relates to a small-space-oriented elastic support tilting pad magnetic-liquid double-floating thrust bearing needing large bearing.
Background
The fluid dynamic pressure lubrication thrust bearing is widely applied to large-scale rotating mechanical equipment such as various pumps, presses, steam turbines and the like. The main function of the device is to bear axial load, and the device is a key component for maintaining stable and reliable operation of large-scale rotating mechanical equipment. The water lubrication thrust bearing has the advantages of environmental friendliness, high economic safety, low friction coefficient, low power consumption and the like, but the bearing performance needs to be further improved.
Yonnet originally proposed permanent magnet bearings and studied the structure and algorithm of the permanent magnet bearings on the basis of certain assumptions, which was the beginning of the research of modern permanent magnet bearings. The Halbach array magnetizing structure can gather a magnetic field on one side, the magnetic field on the strong side is in sinusoidal distribution, the Halbach array arrangement enables the strong magnetic field to be gathered on the bearing gap between the thrust disc and the thrust shoe, larger magnetic repulsion force is generated, and the introduction of magnetic force can obviously improve the axial bearing capacity of the fluid dynamic pressure lubrication thrust bearing.
Compared with a foreign fluid lubrication tilting pad bearing, uneven load is distributed on the pad surface, uneven wear of the pad surface can be caused, the damping and noise reduction performance is not provided, and the bearing can only be used for oil lubrication.
Therefore, there is a need for a magnetic-liquid double-floating thrust bearing with spring-supported tilting pads. The bearing has the advantages of high bearing capacity, good lubricating, load balancing, vibration damping and noise reduction performances, is suitable for the water lubrication working condition of bearing thrust in a small space and needing large bearing, and can also select the oil lubrication working condition according to the actual condition.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defect of pure liquid film force of the traditional tilting pad thrust bearing, and provides a spring-supported tilting pad magnetic liquid double-floating thrust bearing which can optimize the lubricating, load balancing and vibration damping performances of the bearing and improve the stability and reliability of the bearing.
The technical scheme adopted by the invention is as follows: the utility model provides a two thrust bearing that float of tilting pad magnetic fluid, includes thrust dish, thrust pad and support ring, its characterized in that: be equipped with the interior magnetic ring in the thrust disc, be equipped with a plurality of reciprocating motion from top to bottom in the supporting ring internal circumference, the elastic support subassembly that its periphery of inside filling liquid can take place deformation, the thrust tile is spherical fulcrum thrust tile, and its inside thrust tile magnetic path that is equipped with, the thrust tile corresponds the setting with elastic support subassembly and installs on its upper end, the outside of thrust tile is through radial setting element and supporting ring outside fixed connection, and the inboard clearance fit in passing through radial connecting piece and supporting ring, and the tangent cooperation of the up end of spherical end and elastic support subassembly is passed through to the bottom, forms spherical fulcrum bullet inclinable tile.
According to the technical scheme, the thrust pads are arranged in a fan shape and are uniformly distributed in the circumference, the magnetic circuit arrangement of the thrust discs and the magnetic circuits in the thrust pads is a magnetizing mode for magnetizing an axial Halbach array, and the magnetic field is concentrated at the bearing gap.
According to the technical scheme, the thrust pad comprises a thrust pad sheath with a fan-shaped groove, fan-shaped thrust pad inner magnetic rings and a fan-shaped thrust pad surface, a spherical fulcrum is arranged at the lower end of the thrust pad sheath, the fan-shaped thrust pad inner magnetic rings are longitudinally arranged and adhered together and then are arranged in the fan-shaped groove of the thrust pad sheath, and the upper ends of the fan-shaped thrust pad inner magnetic rings are fixed through the fan-shaped thrust pad surface.
According to the technical scheme, the connecting piece is a key arranged on the inner radial surface of the thrust tile sheath, and a threaded hole with a certain depth is drilled on the outer radial surface of the thrust tile sheath and is used for being in threaded connection and fixation with the positioning piece.
According to the technical scheme, the thrust tile sheath is made of stainless steel materials, the thrust tile surface is made of high polymer materials, and the magnetic blocks, the thrust tile sheath and the thrust tile surface are bonded through the super glue.
According to the technical scheme, the thrust disc comprises a thrust disc sheath, thrust disc inner magnetic rings and a thrust disc base, the connection between the thrust disc inner magnetic rings and the thrust disc sheath adopt a super glue bonding process, and the thrust disc base and the thrust disc sheath are connected through a fastener.
According to the technical scheme, the elastic supporting component comprises a screw rod with a T-shaped cross section, an elastic sealing ring in sealing connection with the periphery of the screw rod, and a bottom ring in sealing connection with the lower end of the sealing ring, a spring is sleeved on the screw rod, the lower end of the wave spring is abutted to the bottom ring, and lubricating liquid is filled in the elastic sealing ring.
According to the technical scheme, the section of the spring is a wave spring with a parallel rectangular structure.
According to the technical scheme, the bottom of the support ring is provided with a circular groove for fixing the bottom ring, key slot holes with the same number as that of the thrust pad surfaces are drilled in the inner wall of the support ring, and the circumferential directions of the key slot holes are slightly larger than keys of the thrust pad sheath; and drilling a round hole with the diameter slightly larger than the outer diameter of the positioning pin on the outer wall of the support ring, so that the thrust pad is connected with the support ring in a matched manner through a key and the positioning pin.
According to the technical scheme, the inner magnetic ring and the thrust shoe magnetic block are made of rare earth permanent magnet materials.
The beneficial effects obtained by the invention are as follows:
1. the magnetic force and the liquid film force jointly provide bearing capacity
The magnetic-liquid double-floating bearing structure is provided, the bearing load is borne by magnetic force and liquid film force together, the defect of insufficient liquid film force can be overcome by introducing the magnetic force, and the rigidity of the magnetic-liquid composite bearing is higher than that of the traditional pure magnetic bearing.
2. Has good load-balancing and lubricating properties.
The elastic support tilting pad structure can enable the bearing to have uniform bearing capacity acting on the pad surface through elastic deformation of the spring when the pad surface height is inconsistent, and can be adaptive to the size of the tilt angle of the pad surface when fluid dynamic pressure lubrication is performed, so that good lubrication effects under different working conditions are achieved.
3. Has good vibration damping performance and improves stability.
The section of the wave spring is in a parallel rectangle, an oil film is extruded and sheared at the gap of the spring, and oil film damping is formed in a radial sealing cavity of the spring, so that a good vibration damping effect can be achieved, and the stability of the bearing is improved.
Drawings
FIG. 1 is a schematic view of a bearing assembly provided by an embodiment of the present invention.
Fig. 2a and 2b are schematic structural views of a thrust shoe sheath provided by an embodiment of the invention.
Fig. 3a and fig. 3b are schematic structural diagrams of a magnetic block and a magnetic ring according to an embodiment of the present invention.
Fig. 4 shows a Halbach array arrangement manner for magnetizing magnetic blocks in a magnetic ring and a thrust shoe in a thrust disc according to an embodiment of the present invention.
Fig. 5 is an assembly view of the elastic support assembly according to the embodiment of the present invention.
Fig. 6 is a schematic diagram illustrating a principle that oil film damping is formed by extruding and shearing oil in a spring seal cavity according to an embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a support ring provided in an embodiment of the present invention.
In the figure: 1, a thrust disc sheath; 2, an inner magnetic ring of the thrust disc; 3, a thrust disc base; 4, a thrust shoe sheath; 5, thrust bearing surface; 6, inner magnetic blocks of the thrust bearing; 7, positioning pins; 8, a screw rod; 9 a wave spring; 10, an elastic sealing ring; 11 a bottom ring; 12 supporting the ring; 13 spherical end.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in fig. 1, this embodiment provides a two thrust bearing that float and prop tilting pad magnetic fluid, including thrust disc, thrust tile and support ring, be equipped with interior magnetic ring 2 in the thrust disc, be equipped with a plurality of reciprocating motion from top to bottom in the support ring internal circumference, the elastic support subassembly that its periphery of inside filling liquid can take place deformation, the thrust tile is spherical fulcrum thrust tile, and its inside thrust tile magnetic path 6 that is equipped with, the thrust tile corresponds the setting and installs on its upper end with elastic support subassembly, radial locating element 7 and support ring outside fixed connection are passed through in the outside of thrust tile, and inboard clearance fit through radial connecting piece and support ring, and the tangent cooperation of the up end of spherical end 13 and elastic support subassembly is passed through to the bottom, forms spherical fulcrum and props tilting pad. The invention provides a magnetic-liquid double-floating bearing structure, wherein the bearing capacity is jointly borne by liquid film force at a gap and magnetic repulsion force generated between a thrust disc magnetic ring 2 and a thrust tile magnetic block 6, the defect of insufficient liquid film force can be overcome by introducing magnetic force, and the rigidity of a magnetic-liquid composite bearing is higher than that of a traditional pure magnetic bearing.
The thrust disc comprises a thrust disc sheath 1, thrust disc inner magnetic rings 2 and a thrust disc base 3, the thrust disc inner magnetic rings 2 are structurally shown in fig. 3a and are composed of a plurality of inner magnetic rings 2, the thrust disc inner magnetic rings 2 and the thrust disc sheath 1 are connected through a super glue bonding process, and the thrust disc base 3 and the thrust disc sheath 1 are connected through screws.
The thrust pad comprises a thrust pad sheath 4 with fan-shaped grooves, fan-shaped thrust pad inner magnetic rings 6 and fan-shaped thrust pad faces 5, wherein a spherical fulcrum 13 is arranged at the lower end of the thrust pad sheath 4, the fan-shaped thrust pad inner magnetic rings 6 are longitudinally arranged and bonded by strong glue, then the bonded magnetic rings are bonded into the fan-shaped grooves of the thrust pad sheath 4 by the strong glue, and then the thrust pad faces 5 are bonded with the thrust pad sheath 4. The thrust tile sheath 4 is made of stainless steel materials, the thrust tile surface 5 is made of high polymer materials, and the magnetic blocks, the thrust tile sheath 4 and the thrust tile surface 5 are bonded through super glue.
As shown in fig. 2a and 2b, the connecting member is a key disposed on the inner radial surface of the thrust shoe sheath, and a threaded hole with a certain depth is drilled on the outer radial surface of the thrust outer sheath for being screwed and fixed with a positioning member, wherein the positioning member 7 is a positioning pin.
The inner magnetic ring 2 and the thrust shoe magnetic block 6 in the thrust disc are made of rare earth permanent magnetic materials, and the magnetizing modes of the inner magnetic ring and the thrust shoe magnetic block are shown in figure 4 and are axial Halbach magnetizing, so that one side of a generated strong magnetic field is gathered at a bearing gap, and a larger magnetic repulsion force is generated.
The elastic support component comprises a screw 8 with a T-shaped cross section, an elastic sealing ring 10 connected with the periphery of the screw in a sealing mode, and a bottom ring 12 connected with the lower end of the sealing ring in a sealing mode, a wave spring 9 is sleeved on the screw, the structure diagram of the wave spring is shown in the 5, the wave spring is made of spring steel materials, the sealing elastic ring 10 is arranged on the circumference, the bottom ring 11 is arranged at the lower end of the wave spring, four parts are bonded through sealing glue, and lubricating liquid is filled in the elastic sealing ring. The screw 8 is made of stainless steel, the upper end face of the screw 8 is tangent to the spherical surface of the spherical tilting pad, and the elastic ring 10 is made of rubber. According to the design of the wave spring with the rectangular cross section, oil film damping is formed by formed extrusion oil and shearing oil, and the vibration reduction capability and stability of the bearing can be well improved.
As shown in the schematic diagram of fig. 6, when the spring 9 is pressed, the oil in the gap between the spring is pressed, and the oil between the elastic sealing ring 10 and the spring 9 is subjected to a shearing force, so as to form an integral damping force, reduce the vibration of the thrust shoe in the axial direction, and improve the stability of the bearing.
The structure of the supporting ring is shown in fig. 7, a circular groove is arranged at the bottom of the supporting ring 12 and used for fixing with a bottom ring 11 of the wave spring, key slot holes with the same number as the tile surface are drilled on the inner wall of the supporting ring 12, and the circumferential direction of the key slot holes is slightly larger than the keys of the thrust tile sheath 4; and drilling a round hole with the diameter slightly larger than the outer diameter of the positioning pin 7 on the outer wall of the support ring, so that the thrust pad is connected with the support ring through the key and the positioning pin 7 in a matching way.
The invention provides a magnetic-liquid double-floating thrust bearing with elastically supported tilting pads, which comprises the following working processes: the thrust disc rotates clockwise when working, and the generated axial thrust acts on the thrust tile surface; lubricating liquid forms the wedge clearance along with the rotatory flow of thrust dish to between thrust dish and the thrust tile, produces fluid dynamic pressure, and under the fluid dynamic pressure effect, spring 9 pressurized produces elastic deformation, and along with the change of operating mode, the deformation that the tile face passes through the spring forms good wedge clearance, and then produces good dynamic pressure lubrication.
The shearing oil and the extrusion oil formed by the wave spring generate oil film damping, so that the vibration of the thrust bearing shoe in the axial direction can be effectively reduced, the noise of the equipment during working is reduced, and the stability is improved.
The embodiments described above are some, but not all embodiments of the present application. The detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Claims (10)
1. The utility model provides a two thrust bearing that float of tilting pad magnetic fluid, includes thrust dish, thrust pad and support ring, its characterized in that: be equipped with the interior magnetic ring in the thrust disc, be equipped with a plurality of reciprocating motion from top to bottom in the supporting ring internal circumference, the elastic support subassembly that its periphery of inside filling liquid can take place deformation, the thrust tile is spherical fulcrum thrust tile, and its inside thrust tile magnetic path that is equipped with, the thrust tile corresponds the setting with elastic support subassembly and installs on its upper end, the outside of thrust tile is through radial setting element and supporting ring outside fixed connection, and the inboard clearance fit in passing through radial connecting piece and supporting ring, and the tangent cooperation of the up end of spherical end and elastic support subassembly is passed through to the bottom, forms spherical fulcrum bullet inclinable tile.
2. The spring-supported tilting pad magnetic-liquid double-floating thrust bearing according to claim 1, characterized in that: the thrust pads are arranged in a fan shape and are uniformly distributed in the circumference, the magnetic circuit arrangement of the thrust discs and the magnetic circuits of the magnetic rings in the thrust pads is that the axial Halbach array is magnetized in a magnetizing mode, and the magnetic field is concentrated at the bearing gap.
3. The spring-supported tilting pad magnetic-liquid double-floating thrust bearing according to claim 1 or 2, characterized in that: the thrust pad comprises a thrust pad sheath with a fan-shaped groove, fan-shaped thrust pad inner magnetic rings and a fan-shaped thrust pad surface, wherein a spherical fulcrum is arranged at the lower end of the thrust pad sheath, the fan-shaped thrust pad inner magnetic rings are longitudinally arranged and bonded together and then are arranged in the fan-shaped groove of the thrust pad sheath, and the upper ends of the fan-shaped thrust pad inner magnetic rings are fixed through the fan-shaped thrust pad surface.
4. The spring-supported tilting pad magnetic-liquid double-floating thrust bearing according to claim 3, characterized in that: the connecting piece is a key arranged on the inner radial surface of the thrust pad sheath, and a threaded hole with a certain depth is drilled on the outer radial surface of the thrust pad sheath and is used for being in threaded connection and fixation with the positioning piece.
5. The spring-supported tilting pad magnetic-liquid double-floating thrust bearing according to claim 3, characterized in that: the thrust tile sheath is made of stainless steel materials, the thrust tile surface is made of high polymer materials, and the magnetic blocks, the thrust tile sheath and the thrust tile surface are bonded through super glue.
6. The spring-supported tilting pad magnetic-liquid double-floating thrust bearing according to claim 1 or 2, characterized in that: the thrust disc comprises a thrust disc sheath, thrust disc inner magnetic rings and a thrust disc base, wherein the thrust disc inner magnetic rings are connected with each other and the thrust disc sheath are connected with each other through a super glue bonding process, and the thrust disc base is connected with the thrust disc sheath through a fastener.
7. The spring-supported tilting pad magnetic-liquid double-floating thrust bearing according to claim 1 or 2, characterized in that: the elastic supporting component comprises a screw rod with a T-shaped cross section, an elastic sealing ring in sealing connection with the periphery of the screw rod, and a bottom ring in sealing connection with the lower end of the sealing ring, a spring is sleeved on the screw rod, the lower end of the wave spring is abutted against the bottom ring, and lubricating liquid is filled in the elastic sealing ring.
8. The spring-supported tilting pad magnetic-liquid double-floating thrust bearing according to claim 7, characterized in that: the section of the spring is a wave spring with a parallel rectangular structure.
9. The spring-supported tilting pad magnetic-liquid double-floating thrust bearing according to claim 8, characterized in that: the bottom of the support ring is provided with a circular groove for fixing the bottom ring, key slot holes with the same number as the thrust pad surfaces are drilled on the inner wall of the support ring, and the circumferential directions of the key slot holes are slightly larger than keys of the thrust pad sheath; and drilling a round hole with the diameter slightly larger than the outer diameter of the positioning pin on the outer wall of the support ring, so that the thrust pad is connected with the support ring in a matched manner through a key and the positioning pin.
10. The spring-supported tilting pad magnetic-liquid double-floating thrust bearing according to claim 1 or 2, characterized in that: the inner magnetic ring and the thrust tile magnetic block are made of rare earth permanent magnet materials.
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| CN202110499060.2A CN113323960B (en) | 2021-05-08 | 2021-05-08 | Elastic support tilting pad magnetic liquid double-floating thrust bearing |
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| CN202110499060.2A CN113323960B (en) | 2021-05-08 | 2021-05-08 | Elastic support tilting pad magnetic liquid double-floating thrust bearing |
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| CN113323960B CN113323960B (en) | 2022-10-25 |
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2021
- 2021-05-08 CN CN202110499060.2A patent/CN113323960B/en active Active
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|---|---|---|---|---|
| US5564836A (en) * | 1987-05-29 | 1996-10-15 | Kmc, Inc. | Multi-deflection pad hydrodynamic thrust bearings having a multimode construction |
| US20150260255A1 (en) * | 2012-12-19 | 2015-09-17 | Harbin Institute Of Technology | Magnetically suspended vibration isolator with zero stiffness whose angle degree of freedom is decoupled with a joint ball bearing |
| US20170058697A1 (en) * | 2015-09-01 | 2017-03-02 | Rolls-Royce North American Technologies, Inc. | Magnetic squeeze film damper system for a gas turbine engine |
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| CN209621855U (en) * | 2017-05-22 | 2019-11-12 | 哈尔滨电气动力装备有限公司 | Metal tile fragment water lubrication friction auxiliary structure |
| CN108591256A (en) * | 2018-04-02 | 2018-09-28 | 江苏理工学院 | Permanent-magnet bearing with damping function |
| CN109707736A (en) * | 2019-02-28 | 2019-05-03 | 武汉理工大学 | A kind of compound titling-pad journal bearing of magnetic liquid based on Halbach array |
| CN110345159A (en) * | 2019-07-23 | 2019-10-18 | 南昌工程学院 | A kind of magnetic fluid cylindrical roller thrust bearing and its processing technology |
| CN111288119A (en) * | 2020-02-14 | 2020-06-16 | 同济大学 | Three-dimensional vibration isolation device combining inertial container and friction pendulum support |
| CN111720430A (en) * | 2020-07-08 | 2020-09-29 | 南昌工程学院 | Low-resistance magnetic fluid inclined plane thrust bearing of composite bearing bush and machining process thereof |
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