CN113404776B - Magnetic suspension bearing with squeeze film damper - Google Patents
Magnetic suspension bearing with squeeze film damper Download PDFInfo
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- CN113404776B CN113404776B CN202110758896.XA CN202110758896A CN113404776B CN 113404776 B CN113404776 B CN 113404776B CN 202110758896 A CN202110758896 A CN 202110758896A CN 113404776 B CN113404776 B CN 113404776B
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- inner ring
- oil filling
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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
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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
- F16C37/00—Cooling of bearings
- F16C37/005—Cooling of bearings of magnetic 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
- 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
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/16—Suppression of vibrations in rotating systems by making use of members moving with the system using a fluid or pasty material
- F16F15/163—Suppression of vibrations in rotating systems by making use of members moving with the system using a fluid or pasty material fluid acting as a lubricant
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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
Abstract
The invention discloses a magnetic suspension bearing with an extrusion oil film damper, which belongs to the technical field of bearings and comprises a base component, an energy dissipation component and a heat dissipation component, wherein the base component is positioned at the outermost side of a whole set of device, the energy dissipation component is arranged in the base component, and the heat dissipation component is arranged at the edge of the base component.
Description
Technical Field
The invention relates to the technical field of bearings, in particular to a magnetic suspension bearing with an extrusion oil film damper.
Background
The bearing is mechanical transmission shaft's load-bearing device, utilize the inner and outer lane to realize alleviateing the frictional force that the transmission shaft received when supporting the transmission shaft, the antifriction effect of current bearing is not high enough, the bearing also can not obtain effective release at the high heat that high speed operation produced, the life of bearing has been reduced, oil film class bearing is difficult to avoid the phenomenon of the slow loss of oil mass in the use, if can not in time supply, can make the bearing can not reach effectual vibrational force absorption effect, this device can supply the bearing oil mass in real time, and curved heat radiation structure has been designed, so people need have the magnetic suspension bearing who extrudes the oil film attenuator to solve above-mentioned problem.
Disclosure of Invention
The invention aims to provide a magnetic suspension bearing with an extrusion oil film damper, which is used for solving the problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
magnetic suspension bearing with squeeze film attenuator, including basic subassembly, power consumption subassembly, radiator unit, oil charge subassembly, oil feed subassembly, the basic subassembly is located the outside of whole set of device, plays the effect of other parts in the strutting arrangement, be provided with the power consumption subassembly in the basic subassembly, the power consumption subassembly plays the effect of absorbing the mechanical energy that external rotor vibration produced, basic subassembly edge is provided with radiator unit, radiator unit plays and carries out radiating effect to the power consumption subassembly, power consumption subassembly side is provided with the oil charge subassembly, the oil charge subassembly plays and stores and carries out the effect of filling oil to the power consumption subassembly, oil charge subassembly one side is provided with the oil feed subassembly, the oil feed subassembly plays the effect of controlling this device inside oil circuit.
The basic assembly comprises a bearing inner ring, a shaft hole and a bearing outer ring, the bearing inner ring is located in the center of the device, the shaft hole is formed in the center of the bearing inner ring, the bearing outer ring is installed on the outer side of the bearing inner ring in a sleeved mode, the bearing outer ring is fixedly connected with an external bearing fixing device, an external mechanical transmission shaft is fixedly connected with the device through the shaft hole, the bearing inner ring can rotate inside the bearing outer ring, the effect of the bearing is achieved, the bearing outer ring and the bearing inner ring are magnetized, the bearing outer ring inner ring is N-pole, the bearing inner ring outer ring is N-pole, and the suspension effect of the bearing inner ring can be achieved.
The energy dissipation assembly comprises an oil film squeezing ring, an oil film squeezing groove and a squeezing groove oil beating hole, wherein the oil film squeezing ring is fixedly installed on one side, close to the bearing outer ring, of the bearing inner ring, the oil film squeezing groove is formed in one side, close to the bearing inner ring, of the bearing outer ring, the oil film squeezing groove is formed in the oil film squeezing groove, the squeezing groove oil beating hole is formed in the side wall of the bearing outer ring, the squeezing groove oil beating hole is communicated with the oil film squeezing groove, bearing lubricating oil is filled in the oil film squeezing groove, when the bearing inner ring rotates along with an external rotor, the external rotor can generate eccentricity under high-speed rotation, if the rotor is fixed by the bearing too firmly, the rotor is prone to bending and abrasion under the action of resistance, in the device, the rotor drives the bearing inner ring to do eccentric rotation together, the bearing inner ring eccentric rotation can squeeze the bearing lubricating oil in the squeezing groove, the squeezed lubricating oil can move in the opposite direction of the eccentric direction of the rotor at the moment, the lubricating oil can always flow in the oil film squeezing groove along with the movement of the rotor, the rotor can always present mobile lubricating oil, the supporting force of the rotor can be reduced by the heat of the rotor, and the lubricating oil can be reduced by the heat of the rotor.
The heat dissipation assembly comprises two heat dissipation annular grooves, two heat dissipation S-shaped pipes, an elastic fixing spring and a spring pipe, wherein the circumferential side wall of one side of the bearing outer ring, which is far away from the bearing inner ring, is provided with the heat dissipation annular grooves, the sides of the heat dissipation S-shaped pipes are fixedly provided with the elastic fixing spring, one end of the elastic fixing spring, which is far away from the heat dissipation S-shaped pipes, is fixedly connected with the side wall of the heat dissipation annular grooves, the two ends of the heat dissipation S-shaped pipes are fixedly communicated with the spring pipe, the spring pipe penetrates through the bearing outer ring and is fixedly communicated with the oil film extrusion groove, the eccentric vibration of the rotor also has directionality due to the rotary motion of the rotor, and when the bearing inner ring extrudes the lubricating oil in the oil film extrusion groove along with the rotor, one part of the lubricating oil can be extruded into the spring pipe, the rotor ceaselessly vibrates, the inside lubricating oil that can be incessant crowded into of spring pipe, lubricating oil gets into heat dissipation S type pipe, finally the spring pipe through the other end returns inside the oil film extrusion groove, heat dissipation S type pipe is direct and the outside air contact, lubricating oil is when heat dissipation S type pipe is inside, can realize the radiating effect, and this device is in the use, even there is lubricating oil to carry out energy absorption, the bearing inner race still can produce slight vibration under the rotor action, and through the spring union coupling between heat dissipation S type pipe and the oil film extrusion groove, through elastic fixation spring coupling between heat dissipation S type pipe and the heat dissipation annular groove lateral wall, make heat dissipation S type pipe can follow the vibration of bearing inner race, and because the quality is little, vibration amplitude can be greater than the bearing inner race, vibration makes air flow rate increase around the heat dissipation S type pipe, the radiating effect has been strengthened.
The oil filling assembly comprises an oil filling groove, a rubber air bag and an oil filling pipe, wherein the oil filling groove is arranged on one side, away from the bearing inner ring, of the oil film extrusion groove, the oil filling groove is formed in the inner portion of the bearing outer ring, the rubber air bag is fixedly arranged at one end, close to the oil film extrusion groove, of the oil filling groove, the oil filling pipe is fixedly arranged at one end of the oil filling groove, the end, away from the oil filling groove, of the oil filling pipe is fixedly connected with the oil film extrusion groove, the oil filling assembly comprises an oil filling groove oil filling hole, an air inlet groove hole and an oil-proof breathable film, the oil filling groove oil filling hole is formed in the outer side wall of the bearing outer ring, the air inlet groove hole is formed in the bearing outer ring, one end of the air inlet groove hole is communicated with the oil film extrusion groove, the end, away from the oil film extrusion groove, of the air inlet hole is communicated with the interior of the rubber air bag, the phenomenon that the oil film type bearing is slowly lost cannot be timely supplemented cannot be avoided in the use process, the bearing can not achieve the effective vibration force absorption effect, when the amount of lubricating oil in the oil film extrusion groove is slightly lost, air can be infiltrated into the oil film extrusion groove instead of the oil film extrusion groove, the vibration of the inner ring of the bearing drives the lubricating oil to flow, the lubricating oil drives the air doped inside to flow, when the air is extruded to the area of the air inlet groove, the air enters the rubber air bag through the oil-proof air-permeable film, the lubricating oil is blocked, the air enters the rubber air bag to enlarge the volume of the rubber air bag, the rubber air bag extrudes the lubricating oil stored in the oil filling groove, the lubricating oil in the rubber air bag flows into the oil film extrusion groove through the oil filling pipe, the real-time supplement of the oil amount in the oil film extrusion groove is realized, the oil film extrusion groove is always in a full oil state, the vibration force can be effectively absorbed, and the device can fill oil into the oil film extrusion groove through the oil filling hole of the extrusion groove, the oil is filled into the oil filling groove through the oil filling groove oil filling hole, when the oil is filled into the oil filling groove, the rubber air bag can penetrate through the oil-proof breathable film under the pressure of lubricating oil to enter the oil film extrusion groove, and finally the rubber air bag is extruded out of the device through a small gap between the oil film extrusion ring and the oil film extrusion groove.
The spring pipe is an inclined spring pipe, so that the spring pipe can conveniently meet the flowing direction of lubricating oil in the oil film extrusion groove, and the lubricating oil can conveniently enter the spring pipe.
The number of the heat dissipation S-shaped pipes is multiple, and the heat dissipation efficiency of the plurality of heat dissipation S-shaped pipes is higher.
The elastic fixing spring is a light spring, so that the effect that the heat dissipation S-shaped pipe is stably fixed by the elastic fixing spring is avoided, and the heat dissipation S-shaped pipe cannot shake to accelerate heat dissipation.
The heat dissipation S-shaped pipe is made of metal, metal rigidity is high, deformation of the heat dissipation S-shaped pipe can be avoided easily, and the service life of the device can be prolonged.
Compared with the prior art, the invention has the beneficial effects that:
the device magnetizes the inner ring and the outer ring of the bearing to realize the suspension effect, reduces the friction force and enables the transmission shaft to work more effectively;
the bearing inner ring extrudes bearing lubricating oil in the oil film extrusion groove along with eccentric vibration of the rotor, the lubricating oil in the oil film extrusion groove can always present fluidity along with the movement of the rotor, the lubricating oil continuously flows in a large space direction to adapt to the extrusion of the rotor while supporting the bearing inner ring, the damping support of the lubricating oil ensures that the rotor obtains fluid supporting force in a high-speed running state, the resistance is very small, the friction resistance of the bearing is reduced, the work done by the eccentric rotary vibration of the rotor can be absorbed by the lubricating oil, most of the work is converted into the heat of the lubricating oil, and the rotor has more stability in running;
the device extrudes the lubricating oil into the heat dissipation S-shaped pipe by utilizing the change of pressure difference in the flowing process of the lubricating oil, so that the heat dissipation effect is realized on the lubricating oil in the heat dissipation S-shaped pipe, and the heat dissipation S-shaped pipe can vibrate along with the outer ring of the bearing, so that the heat dissipation effect is enhanced;
the oil film type bearing is difficult to avoid the phenomenon of slow loss of oil mass in the use, and this device utilizes the rubber air bag to produce the extrusion to the inside lubricating oil of storing of oil charge inslot, and the inside lubricating oil of rubber air bag can flow into the oil film extrusion inslot through the oil charge pipe, has realized the effect to the real-time replenishment of the inside oil mass of oil film extrusion inslot, makes the oil film extrusion inslot be in full oil state always, can effectively absorb the vibrational force.
Drawings
FIG. 1 is a schematic structural view of a magnetic suspension bearing with a squeeze film damper according to the present invention;
FIG. 2 is a schematic diagram of a side view of a magnetic suspension bearing with a squeeze film damper according to the present invention;
FIG. 3 is a schematic sectional view of the heat dissipation S-shaped tube region of the magnetic suspension bearing with squeeze film damper according to the present invention;
FIG. 4 is a schematic sectional view of the air inlet slot area of the magnetic suspension bearing with squeeze film damper according to the present invention;
FIG. 5 is an enlarged view of the area A of the magnetic suspension bearing with squeeze film damper of the present invention;
FIG. 6 is an enlarged schematic view of the area B of the magnetic suspension bearing with squeeze film damper according to the present invention;
FIG. 7 is an enlarged schematic view of the area C of the magnetic suspension bearing with squeeze film damper according to the present invention;
FIG. 8 is a schematic diagram of a splicing structure of a bearing outer ring and a bearing inner ring sector magnet of the magnetic suspension bearing with the squeeze film damper according to the present invention.
Reference numbers in the figures: 101. a bearing inner race; 102. a shaft hole; 103. a bearing outer race; 201. an oil film extrusion ring; 202. an oil film extrusion groove; 203. an oil hole is drilled in the extrusion groove; 301. a heat dissipation annular groove; 302. a heat dissipation S-shaped pipe; 303. an elastic fixing spring; 304. a spring tube; 401. an oil filling tank; 402. a rubber air bag; 403. an oil-filled tube; 501. an oil filling groove oil hole; 502. an air inlet slot; 503. an oil-proof breathable film.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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 invention.
Example (b): as shown in fig. 1 to 7, the magnetic suspension bearing with the squeeze film damper comprises a base component, an energy dissipation component, a heat dissipation component, an oil charging component and an oil charging component, wherein the base component is located on the outermost side of the whole set of device and plays a role of other components in a supporting device, the energy dissipation component is arranged in the base component and plays a role of absorbing mechanical energy generated by vibration of an external rotor, the edge of the base component is provided with the heat dissipation component which plays a role of dissipating heat of the energy dissipation component, the oil charging component is arranged on the side of the energy dissipation component and plays a role of storing and supplementing oil to the energy dissipation component, the oil charging component is arranged on one side of the oil charging component and plays a role of controlling an internal oil circuit of the device.
The basic assembly comprises a bearing inner ring 101, an axle hole 102 and a bearing outer ring 103, wherein the bearing inner ring 101 is positioned in the center of the device, the axle hole 102 is formed in the center of the bearing inner ring 101, the bearing outer ring 103 is sleeved outside the bearing inner ring 101 and fixedly connected with an external bearing fixing device, an external mechanical transmission shaft is fixedly connected with the device through the axle hole 102, the bearing inner ring 101 can rotate inside the bearing outer ring 103, the effect of the bearing is achieved, the bearing outer ring 103 and the bearing inner ring 101 are magnetized, the inner ring of the bearing outer ring 103 is an N pole, the outer ring of the bearing inner ring 101 is an N pole, the suspension effect of the bearing inner ring 101 can be achieved, the bearing outer ring 103 is formed by mutually splicing and fixing a plurality of magnets with sector cross sections into an annular shape, the bearing inner ring 101 is formed by mutually splicing and fixing a plurality of magnets with sector cross sections into an annular shape, each sector magnet is provided with an independent magnetic field, the magnetic pole orientation of the bearing outer ring 103 and the bearing inner ring 101 can be controlled, a sector magnetic sheet can also be fixedly arranged inside the bearing outer ring 103, and the bearing inner ring 101 is fixedly provided with a sector magnetic pole effect of the same magnetic pole of the bearing inner ring and the opposite surface.
The energy dissipation assembly comprises an oil film squeezing ring 201, an oil film squeezing groove 202 and a squeezing groove oil drilling hole 203, wherein the oil film squeezing ring 201 is fixedly installed on one side, close to the bearing outer ring 103, of the bearing inner ring 101, the bearing outer ring 103 is provided with the oil film squeezing groove 202, the oil film squeezing ring 201 is embedded into the oil film squeezing groove 202, the squeezing groove oil drilling hole 203 is formed in the side wall of the bearing outer ring 103, the squeezing groove oil drilling hole 203 is communicated with the oil film squeezing groove 202, bearing lubricating oil is filled in the oil film squeezing groove 202, when the bearing inner ring 101 rotates along with an external rotor, the external rotor can generate eccentricity under high-speed rotation, if the rotor is fixed by a bearing too firmly, the rotor is easily bent and abraded due to resistance when eccentric motion of the rotor, the rotor drives the bearing inner ring 101 to do eccentric rotation motion together, the eccentric rotation of the bearing inner ring 101 can extrude bearing lubricating oil in the oil film extrusion groove 202, the extruded lubricating oil can move in the opposite direction of the eccentric direction of the rotor at the moment, along with the movement of the rotor, the lubricating oil in the oil film extrusion groove 202 can always present fluidity, the bearing inner ring 101 is supported and simultaneously does not continuously flow in the large space direction to adapt to the extrusion of the rotor, the damping support of the lubricating oil enables the rotor to obtain fluid supporting force in a high-speed running state, the resistance is small, the friction resistance of the bearing is reduced, the work done by the eccentric rotation vibration of the rotor can be absorbed by the lubricating oil, most of the work done by the eccentric rotation vibration of the rotor is converted into the heat of the lubricating oil, and the operation of the rotor is more stable.
The heat dissipation assembly comprises heat dissipation annular grooves 301, two heat dissipation S-shaped pipes 302, elastic fixing springs 303 and spring pipes 304, wherein the heat dissipation annular grooves 301 are formed in the circumferential side wall of one side, away from the bearing inner ring 101, of the bearing outer ring 103, the heat dissipation S-shaped pipes 302 are arranged in the heat dissipation annular grooves 301, the elastic fixing springs 303 are fixedly arranged on the side portions of the heat dissipation S-shaped pipes 302, one ends, away from the heat dissipation S-shaped pipes 302, of the elastic fixing springs 303 are fixedly connected with the side walls of the heat dissipation annular grooves 301, the spring pipes 304 are fixedly communicated with the two ends of the heat dissipation S-shaped pipes 302, the spring pipes 304 penetrate through the bearing outer ring 103 and are fixedly communicated with the oil film extrusion grooves 202, and the rotor rotates, therefore, the eccentric vibration of the rotor is also directional, and when the bearing inner ring 101 presses the lubricating oil in the groove 202 following the rotor squeeze film, part of the lubricating oil can be extruded into the spring tube 304, the rotor continuously vibrates, the lubricating oil can be extruded into the spring tube 304 continuously, the lubricating oil enters the heat dissipation S-shaped tube 302 and finally returns to the inside of the oil film extrusion groove 202 through the spring tube 304 at the other end, the heat dissipation S-shaped tube 302 is directly contacted with the outside air, when the lubricating oil is arranged inside the heat dissipation S-shaped tube 302, the heat dissipation effect can be realized, and in the using process of the device, even if lubricating oil is used for energy absorption, the bearing outer ring 103 still generates slight vibration under the action of the rotor, the heat dissipation S-shaped pipe 302 is connected with the oil film pressing groove 202 through a spring pipe 304, the heat dissipation S-shaped pipe 302 is connected with the side wall of the heat dissipation annular groove 301 through an elastic fixing spring 303, so that the heat dissipation S-shaped pipe 302 can vibrate along with the bearing outer ring 103, and because the mass is small, the vibration amplitude is larger than that of the bearing outer ring 103, the vibration accelerates the air flow rate around the heat dissipation S-shaped pipe 302, and the heat dissipation effect is enhanced.
The oil filling assembly comprises an oil filling groove 401, a rubber air bag 402 and an oil filling pipe 403, wherein the oil filling groove 401 is arranged on one side of the oil film extrusion groove 202, which is far away from the bearing inner ring 101, the oil filling groove 401 is arranged inside the bearing outer ring 103, the rubber air bag 402 is fixedly arranged at one end of the oil filling groove 401, the oil filling pipe 403 is fixedly arranged at one end of the oil filling groove 401, which is far away from the oil filling groove 401, and is fixedly connected with the oil film extrusion groove 202, the oil filling assembly comprises an oil filling groove oil filling hole 501, an air inlet groove hole 502 and an oil-proof breathable film 503, the oil filling groove oil filling hole 501 is arranged on the outer side wall of the bearing outer ring 103, the air inlet groove hole 502 is arranged inside the bearing outer ring 103, one end of the air inlet groove hole 502 is communicated with the oil film extrusion groove 202, one end of the air inlet groove 502, which is far away from the oil film extrusion groove 202, is communicated with the inside of the rubber air bag 402, and the oil film bearing is difficult to avoid the phenomenon of slow loss in the use process, if the oil cannot be supplemented in time, the bearing cannot achieve an effective vibration force absorption effect, when the amount of the lubricating oil in the oil film extrusion groove 202 is slightly lost, air instead seeps into the oil film extrusion groove 202, the bearing inner ring 101 vibrates to drive the lubricating oil to flow, the lubricating oil drives the air doped inside to flow, when the air is extruded to the area of the air inlet groove hole 502, the air enters the rubber air bag 402 through the oil-proof air-permeable film 503 and enters the rubber air bag 402, the lubricating oil is blocked, the air enters the rubber air bag 402 to increase the volume of the rubber air bag 402, the rubber air bag 402 extrudes the lubricating oil stored in the oil filling groove 401, the lubricating oil in the rubber air bag 402 flows into the oil film extrusion groove 202 through the oil filling pipe 403, so that the real-time oil supplementation to the amount inside the oil film extrusion groove 202 is always in a full oil state, and the vibration force can be effectively absorbed, the device can fill oil into the oil film extrusion groove 202 through the extrusion groove oil filling hole 203, fill oil into the oil filling groove 401 through the oil filling groove oil filling hole 501, when the oil is filled into the oil filling groove 401, the rubber airbag 402 can penetrate through the oil-proof breathable film 503 under the pressure of lubricating oil to enter the oil film extrusion groove 202, and finally the oil film extrusion groove 202 is extruded through a small gap between the oil film extrusion ring 201 and the oil film extrusion groove 202.
The spring tube 304 is an inclined spring tube 304, so that the spring tube 304 can meet the flowing direction of the lubricating oil in the oil film squeezing groove 202, and the lubricating oil can enter the spring tube 304 conveniently.
There are several heat dissipation S-shaped pipes 302, and the heat dissipation efficiency of the plurality of heat dissipation S-shaped pipes 302 is higher.
The elastic fixing spring 303 is a light spring, so as to avoid the effect that the elastic fixing spring 303 stably fixes the heat dissipation S-shaped tube 302, and prevent the heat dissipation S-shaped tube 302 from shaking to accelerate heat dissipation.
The heat dissipation S-shaped pipe 302 is made of metal, and the metal has high rigidity, so that the heat dissipation S-shaped pipe 302 is prevented from being easily deformed, and the service life of the device is prolonged.
The working principle is as follows:
the bearing outer ring 103 is fixedly connected with an external bearing fixing device, an external mechanical transmission shaft is fixedly connected with the device through a shaft hole 102, the bearing inner ring 101 can rotate inside the bearing outer ring 103, the effect of the bearing is achieved, the bearing outer ring 103 and the bearing inner ring 101 are magnetized, the inner ring of the bearing outer ring 103 is an N pole, the outer ring of the bearing inner ring 101 is an N pole, and the suspension effect of the bearing inner ring 101 can be achieved;
the oil film extrusion groove 202 is filled with bearing lubricating oil, when the bearing inner ring 101 rotates along with an external rotor, the external rotor can generate eccentricity at a high speed, if the rotor is fixed too firmly by a bearing, the rotor eccentric motion is easily bent and abraded by resistance, in the device, the rotor drives the bearing inner ring 101 to do eccentric rotary motion together, the bearing lubricating oil in the oil film extrusion groove 202 can be extruded by the eccentric rotation of the bearing inner ring 101, the extruded lubricating oil can move in the opposite direction of the eccentric direction of the rotor at the moment, along with the movement of the rotor, the lubricating oil in the oil film extrusion groove 202 can always present fluidity, the lubricating oil can continuously flow in a large space direction to adapt to the extrusion of the rotor while supporting the bearing inner ring 101, the damping support of the lubricating oil enables the rotor to obtain fluid supporting force under a high-speed running state, the resistance is small, the frictional resistance of the bearing is reduced, work done by the eccentric rotary vibration of the rotor can be absorbed by the lubricating oil, most of the lubricating oil is converted into lubricating heat, and the rotor can be more stable in running;
because the rotor does rotary motion, the eccentric vibration of the rotor also has directionality, when the bearing inner ring 101 presses lubricating oil in the oil film pressing groove 202 along with the rotor, part of the lubricating oil can be pressed into the spring tube 304, the rotor vibrates endlessly, lubricating oil can be continuously squeezed into the spring tube 304, the lubricating oil enters the heat dissipation S-shaped tube 302 and finally returns to the oil film pressing groove 202 through the spring tube 304 at the other end, the heat dissipation S-shaped tube 302 is directly contacted with the outside air, when the lubricating oil is in the heat dissipation S-shaped tube 302, the heat dissipation effect can be achieved, in the using process of the device, even if the lubricating oil absorbs energy, the bearing outer ring 103 still can vibrate slightly under the action of the rotor, the heat dissipation S-shaped tube 302 is connected with the oil film pressing groove 202 through the spring tube 304, the heat dissipation S-shaped tube 302 is connected with the side wall of the heat dissipation annular groove 301 through the elastic fixing spring 303, so that the heat dissipation S-shaped tube 302 can vibrate along with the bearing outer ring 103, and the vibration amplitude is larger than that the air flow rate around the heat dissipation S-shaped tube 103 is increased due to small mass, and the vibration is larger than the bearing outer ring 103;
when the lubricating oil in the oil film extrusion groove 202 is slightly lost, air can seep into the oil film extrusion groove 202 instead of the oil film extrusion groove, the inner ring 101 of the bearing vibrates to drive the lubricating oil to flow, the lubricating oil drives the internally doped air to flow, when the air is extruded to the area of the air inlet groove hole 502, the air enters the inside of the rubber air bag 402 through the oil-proof breathable film 503, the lubricating oil is blocked, the air enters the rubber air bag 402 to enlarge the volume of the rubber air bag 402, the rubber air bag 402 extrudes the lubricating oil stored in the oil filling groove 401, the lubricating oil in the rubber air bag 402 flows into the oil film extrusion groove 202 through the oil filling pipe, the real-time oil supplement to the oil in the oil film extrusion groove 202 is realized, the oil film extrusion groove 202 is always in a full oil state, the lubricating oil can be effectively absorbed, the device can pump the oil into the oil film extrusion groove 202 through the oil filling groove 203, the oil filling groove 501 of the oil filling groove, the oil filling groove 401 is pumped into the oil film extrusion groove 401, the oil filling groove 401 through the oil filling device, the gap between the oil filling groove 401 of the oil filling groove 401 and the oil filling device 401 is finally extruded through the oil filling device, and the oil filling device 402, and the micro oil filling device can extrude the oil filling pressure of the oil filling device 201.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (2)
1. The utility model provides a magnetic suspension bearing with squeeze film attenuator which characterized in that: the energy-saving device comprises a basic assembly, an energy consumption assembly, a heat dissipation assembly, an oil charging assembly and an oil charging assembly, wherein the basic assembly is positioned at the outermost side of the whole device and plays a role of supporting other components in the device;
the foundation assembly comprises a bearing inner ring (101), a shaft hole (102) and a bearing outer ring (103), wherein the bearing inner ring (101) is positioned in the center of the device, the shaft hole (102) is formed in the center of the bearing inner ring (101), and the bearing outer ring (103) is sleeved on the outer side of the bearing inner ring (101);
the energy dissipation assembly comprises an oil film squeezing ring (201), an oil film squeezing groove (202) and a squeezing groove oil punching hole (203), wherein the oil film squeezing ring (201) is fixedly installed on one side, close to the bearing outer ring (103), of the bearing inner ring (101), the oil film squeezing groove (202) is formed in one side, close to the bearing inner ring (101), of the bearing outer ring (103), the oil film squeezing ring (201) is embedded into the oil film squeezing groove (202), the squeezing groove oil punching hole (203) is formed in the side wall of the bearing outer ring (103), and the squeezing groove oil punching hole (203) is communicated with the oil film squeezing groove (202);
the oil filling assembly comprises an oil filling groove (401), a rubber air bag (402) and an oil filling pipe (403), wherein the oil filling groove (401) is formed in one side, away from a bearing inner ring (101), of the oil film extrusion groove (202), the oil filling groove (401) is formed in a bearing outer ring (103), the rubber air bag (402) is fixedly installed at one end, close to the oil film extrusion groove (202), of the oil filling groove (401), the oil filling pipe (403) is fixedly installed at one end of the oil filling groove (401), and one end, away from the oil filling groove (401), of the oil filling pipe (403) is fixedly connected with the oil film extrusion groove (202).
2. A magnetic suspension bearing with squeeze film damper according to claim 1, wherein: the oil inlet assembly comprises an oil filling groove oil filling hole (501), an air inlet groove hole (502) and an oil-proof breathable film (503), the oil filling groove oil filling hole (501) is formed in the outer side wall of the bearing outer ring (103), the air inlet groove hole (502) is formed in the bearing outer ring (103), one end of the air inlet groove hole (502) is communicated with the oil film extrusion groove (202), and one end, far away from the oil film extrusion groove (202), of the air inlet groove hole (502) is communicated with the interior of the rubber air bag (402).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110758896.XA CN113404776B (en) | 2020-06-22 | 2020-06-22 | Magnetic suspension bearing with squeeze film damper |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN112737168B (en) * | 2020-12-22 | 2022-06-17 | 华能太仓发电有限责任公司 | Rotor protection device based on new forms of energy electricity generation |
| CN112877931B (en) * | 2021-01-13 | 2022-09-13 | 徐州力达缝纫设备制造有限公司 | Crank type sewing machine for sewing flat seam |
| CN113359298B (en) * | 2021-06-18 | 2022-06-03 | 歌尔股份有限公司 | Hydraulic pressure pivot subassembly and intelligent glasses |
| CN114893496B (en) * | 2022-03-15 | 2023-04-07 | 南京航空航天大学 | Thrust sliding bearing based on temperature difference wedge |
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Also Published As
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| CN111692211B (en) | 2021-07-30 |
| CN113404776A (en) | 2021-09-17 |
| CN111692211A (en) | 2020-09-22 |
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