CN113931929B - Rolling bearing device capable of autonomously reducing vibration and noise - Google Patents
Rolling bearing device capable of autonomously reducing vibration and noise Download PDFInfo
- Publication number
- CN113931929B CN113931929B CN202111084446.3A CN202111084446A CN113931929B CN 113931929 B CN113931929 B CN 113931929B CN 202111084446 A CN202111084446 A CN 202111084446A CN 113931929 B CN113931929 B CN 113931929B
- Authority
- CN
- China
- Prior art keywords
- inner ring
- rolling bearing
- vibration
- noise
- coil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000005096 rolling process Methods 0.000 title claims abstract description 35
- 229920001971 elastomer Polymers 0.000 claims abstract description 25
- 239000000806 elastomer Substances 0.000 claims abstract description 25
- 230000009467 reduction Effects 0.000 claims abstract description 21
- 244000043261 Hevea brasiliensis Species 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 3
- 229920003052 natural elastomer Polymers 0.000 claims description 3
- 229920001194 natural rubber Polymers 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000013016 damping Methods 0.000 abstract 1
- 230000009471 action Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Classifications
-
- 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
- F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
- F16C27/04—Ball or roller bearings, e.g. with resilient rolling bodies
-
- 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
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/581—Raceways; Race rings integral with other parts, e.g. with housings or machine elements such as shafts or gear wheels
-
- 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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
- F16F9/535—Magnetorheological [MR] fluid dampers
Abstract
The invention relates to a rolling bearing device capable of autonomously reducing vibration and noise, which comprises an outer ring and an inner ring, wherein rolling bodies are arranged between the outer ring and the inner ring, a magnetorheological elastomer is arranged in the inner ring, a coil is fixedly arranged on the inner ring, and the coil is connected with an externally arranged controllable power supply. Compared with the prior art, the magnetorheological elastomer is added into the inner ring of the bearing, the coil fixedly arranged on the inner ring is electrified to generate a magnetic field, so that the magnetorheological elastomer can realize rigidity adjustment under the assistance of an externally applied magnetic field, the problem of vibration noise of the rolling bearing is solved, the rigidity of the magnetorheological elastomer can be changed by changing the size of the magnetic field, and the vibration damping and noise reduction requirements under various rotating speed working conditions are met.
Description
Technical Field
The invention relates to the technical field of vibration and noise reduction of rolling bearings, in particular to a rolling bearing device capable of autonomously reducing vibration and noise.
Background
In the running process of the rolling bearing, an elastic vibration system is formed by the elastic contact between the roller path and the rolling bodies, and in addition, a forced vibration system caused by manufacturing errors of bearing parts and a self-excited vibration system caused by sliding during movement among the bearing parts can all cause vibration of the bearing, and when vibration energy is transmitted to the air, bearing noise is formed.
Although the rolling bearing structure is simple, vibration and noise of the rolling bearing are complex and disordered physical phenomena, so vibration and noise reduction of the rolling bearing are complex and highly random system engineering. The prior measures for solving the vibration noise of the rolling bearing mainly comprise: the machining precision and the surface treatment are improved, the surface of the rolling element is as smooth as possible, and the fit clearance is reduced, so that the vibration noise during operation is reduced, the manufacturing cost is increased by times, and the problem can not be fundamentally solved; there are mechanisms for analyzing the noise of the rolling bearing through research, so as to attempt to fundamentally solve the problem, but the related theory is not clear at present; in addition, the air bearing and the electromagnetic bearing are directly used to avoid the direct contact of the movable parts, so that the vibration noise is greatly reduced, but the bearing is expensive in manufacturing cost, cannot bear too large load in the axial direction and the radial direction, has high energy consumption and is not suitable for large-scale application.
In addition, a proposal with low cost and easy realization is proposed at present, specifically, a layer of soft composite material is added in the middle of the bearing inner ring, the composite material has the function of vibration reduction and noise reduction, but the composite material can only meet the vibration reduction requirement of a specific rotating speed working condition, and if the rotating speed exceeds or does not reach the optimal vibration reduction working interval, the vibration reduction and noise reduction effect is greatly reduced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the rolling bearing device capable of autonomously reducing vibration and noise so as to meet the vibration and noise reduction requirements under various rotating speed working conditions, and the rolling bearing device has the advantages of low cost and convenient structure.
The aim of the invention can be achieved by the following technical scheme: the rolling bearing device capable of autonomously reducing vibration and noise comprises an outer ring and an inner ring, wherein rolling bodies are arranged between the outer ring and the inner ring, a magnetorheological elastomer is arranged in the inner ring, a coil is fixedly arranged on the inner ring, and the coil is connected with a controllable power supply arranged outside.
Further, the rolling body is wrapped and provided with a retainer.
Further, a seal is provided outside the cage.
Further, a housing is mounted on the coil, the housing being fixedly mounted on the inner coil.
Further, the magnetorheological elastomer is specifically made of a natural rubber matrix material.
Further, the magnetorheological elastomer and the inner ring are integrally molded and cured.
Further, the controllable power supply comprises a direct current power supply and a current controller, wherein the current controller is connected with the direct current power supply, and the direct current power supply is connected with the coil.
Further, the direct current power supply is specifically a 12V regulated power supply.
Further, the inner ring is sleeved on the shaft.
Further, the direction of the magnetic field generated after the coil is electrified is parallel to the direction of the shaft.
Compared with the prior art, the magnetorheological elastomer is arranged in the bearing inner ring and is connected with an external controllable power supply, and a corresponding magnetic field can be generated after the coil is electrified, so that the rigidity of the magnetorheological elastomer is correspondingly changed, vibration transmission generated during the working of the rolling bearing can be reduced, the purposes of vibration reduction and noise reduction are realized, the size of the magnetic field generated by the electrification of the coil can be adjusted by changing the output current of the controllable power supply, and therefore, the corresponding vibration reduction and noise reduction can be carried out according to the actual vibration size, so that the vibration reduction and noise reduction requirements under various rotating speed working conditions are met;
in addition, when the invention is specifically realized, only the inner ring of the bearing is required to be structurally changed, and the invention has the advantages of simple structure and low cost.
Drawings
FIG. 1 is a schematic diagram of a front view of the present invention;
FIG. 2 is a schematic side view of the present invention;
the figure indicates: 1. the device comprises an outer ring, 2 rolling bodies, 3, an inner ring, 4, a magneto-rheological elastomer, 5, a coil and 6 and a controllable power supply.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples.
Examples
As shown in fig. 1-2, the rolling bearing device capable of autonomously reducing vibration and noise comprises an outer ring 1 and an inner ring 3, wherein rolling bodies 2 are arranged between the outer ring 1 and the inner ring 3, a magnetorheological elastomer 4 is arranged in the inner ring 3, a coil 5 is fixedly arranged on the inner ring 3, and the coil 5 is connected with a controllable power supply 6 arranged outside.
In addition, the rolling elements 2 are wrapped and provided with a retainer, and sealing elements are arranged outside the retainer, so that all the rolling elements 2 must use proper lubricating grease and must be maintained and replaced regularly;
the coil 5 is provided with a shell which is fixedly arranged on the inner ring 3;
the magnetorheological elastomer 4 is specifically made of a natural rubber matrix material, and the magnetorheological elastomer 4 and the inner ring 3 are integrally molded and cured;
the controllable power supply 6 comprises a direct current power supply and a current controller, the current controller is connected with the direct current power supply, and the direct current power supply is connected with the coil 5;
the inner ring 3 is sleeved on the shaft, and the direction of a magnetic field generated after the coil 5 is electrified is parallel to the direction of the shaft.
In this embodiment, the dc power supply is specifically a 12V regulated power supply, and is integrated with the current controller in the same electronic control module, so as to provide current for the coil to generate a magnetic field.
According to the invention, the magnetorheological elastomer is added in the middle of the inner ring, the controllable power supply is used for electrifying the coil to generate a magnetic field, and the rigidity of the magnetorheological elastomer can be correspondingly adjusted and changed through magnetic field control. The specifically generated magnetic field is fixed on the inner ring and is kept horizontal to the magnetorheological elastomer in the axial direction, so that the magnetic field uniformly penetrates through the magnetorheological elastomer.
According to the invention, the magnetorheological elastomer is added into the inner ring of the bearing, so that the vibration noise problem of the rolling bearing is solved, the rigidity of the magnetorheological elastomer can be changed through the size of a magnetic field, so that the vibration reduction and noise reduction requirements under various rotating speed working conditions are met.
In practical application, a member needing to move is fixed on an outer ring as a rotor, and under the action of high-speed rotation of the member, an inertial force generated by a small mass unbalance is unavoidable for the rolling bearing under the action of high-speed rotation, and the inertial force is a root cause of vibration noise. The traditional bearing can transmit the vibration to the whole mechanism because of rigid connection, and the vibration can be transmitted to the whole mechanism after being reduced under the action of the magnetorheological elastomer, so that the purposes of vibration reduction and noise reduction are achieved.
Claims (5)
1. The rolling bearing device capable of autonomously reducing vibration and noise is characterized by comprising an outer ring (1) and an inner ring (3), wherein rolling bodies (2) are arranged between the outer ring (1) and the inner ring (3), magnetorheological elastomers (4) are arranged in the inner ring (3), coils (5) are fixedly arranged on the inner ring (3), and the coils (5) are connected with a controllable power supply (6) arranged outside;
the coil (5) is provided with a shell, the shell is fixedly arranged on the inner ring (3), the magnetorheological elastomer (4) is made of a natural rubber matrix material, and the magnetorheological elastomer (4) and the inner ring (3) are integrally molded and cured;
the inner ring (3) is sleeved on the shaft, a magnetic field generated after the coil (5) is electrified is fixed on the inner ring (3), and the direction of the generated magnetic field is kept horizontal to the magnetorheological elastomer in the axial direction, so that the magnetic field is ensured to uniformly penetrate through the magnetorheological elastomer.
2. An autonomous vibration and noise reducing rolling bearing device according to claim 1, characterized in that the rolling elements (2) are provided with a cage in their outer envelope.
3. An autonomous vibration and noise reducing rolling bearing device according to claim 2, wherein the cage is externally provided with a seal.
4. An autonomous vibration and noise reducing rolling bearing device according to claim 1, characterized in that the controllable power source (6) comprises a direct current power source and a current controller, the current controller being connected to the direct current power source, the direct current power source being connected to the coil (5).
5. The rolling bearing device capable of autonomous vibration and noise reduction according to claim 4, wherein the direct current power supply is a 12V regulated power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111084446.3A CN113931929B (en) | 2021-09-16 | 2021-09-16 | Rolling bearing device capable of autonomously reducing vibration and noise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111084446.3A CN113931929B (en) | 2021-09-16 | 2021-09-16 | Rolling bearing device capable of autonomously reducing vibration and noise |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113931929A CN113931929A (en) | 2022-01-14 |
| CN113931929B true CN113931929B (en) | 2024-01-23 |
Family
ID=79275783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111084446.3A Active CN113931929B (en) | 2021-09-16 | 2021-09-16 | Rolling bearing device capable of autonomously reducing vibration and noise |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113931929B (en) |
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| Publication number | Publication date |
|---|---|
| CN113931929A (en) | 2022-01-14 |
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