CN104500635B - A kind of vibration absorber of high-speed rotating shaft system - Google Patents
A kind of vibration absorber of high-speed rotating shaft system Download PDFInfo
- Publication number
- CN104500635B CN104500635B CN201410831450.5A CN201410831450A CN104500635B CN 104500635 B CN104500635 B CN 104500635B CN 201410831450 A CN201410831450 A CN 201410831450A CN 104500635 B CN104500635 B CN 104500635B
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- Prior art keywords
- magnet
- granule
- rotating shaft
- speed rotating
- vibration absorber
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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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/01—Vibration-dampers; Shock-absorbers using friction between loose particles, e.g. sand
- F16F7/015—Vibration-dampers; Shock-absorbers using friction between loose particles, e.g. sand the particles being spherical, cylindrical or the like
-
- 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
- F16F6/00—Magnetic springs; Fluid magnetic springs, i.e. magnetic spring combined with a fluid
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
- Vibration Dampers (AREA)
Abstract
The invention discloses the vibration absorber of a kind of high-speed rotating shaft system, including granule damper housing, it is filled with granule in granule damper housing, the both sides of described granule damper case top are separately installed with the first Magnet and second magnet contrary with the first magnet polarity, it is installed with hollow shell below first Magnet and the second Magnet, bearing is installed in hollow shell, the inner ring of bearing connects support cylinder, support fixed installation in cylinder cored, iron core is wound with hot-wire coil, hot-wire coil is connected with the quoit being positioned in the middle of the first Magnet and the second Magnet. the present invention provides the vibration absorber of a kind of high-speed rotating shaft system, the electric current that EM induction system produces is relied on to generate magnetic field through hot-wire coil, the centrifugal force that granule is subject to is offset by magnetic field force, eliminates grain edgesization extruding phenomenon with this so that it is reach the optimum state of vibration damping.
Description
Technical field
The present invention relates to a kind of vibration absorber, particularly relate to a kind of vibration absorber for high-speed rotating shaft system, belong to noise reduction technology field.
Background technology
Power transmission shaft system is a multivariant vibrational system, by rotating transmission moment of torsion and encouraging body oscillating. These vibrations not only can greatly reduce the riding comfort of vehicle, and can produce obvious external noise. Under the effect of multiple external drive, if the natural frequency of the driving frequency that these excitations produce and drive shaft system is sufficiently close to, violent resonance can be there is, when this vibration reaches a degree of time, even can cause the fatigue rupture of vehicle component, the major accidents such as shaft part fracture can be caused. Existing axle system vibroshock toughness liquid formula antivibrator and MR damper etc., these antivibrators are easily generated catabiosis in engineer applied, easily lost efficacy under complex environment, for instance the patent No. is the rubber damping used in the CN85102692A a kind of combined shock absorber mentioned and gluing pressure craft thereof.
In recent years, granule damping gets the attention, and granule damper has the advantages such as simple in construction, low price, has applied the fields such as Aero-Space at present. But particle damped vibration attenuation device is poor for the effectiveness in vibration suppression of high speed rotating unit, reason is in that the centrifugal force produced when structure rotates makes granule be in compaction state, significantly limit the collision of granule, friction energy-dissipating, cause that granule damper effectiveness in vibration suppression is very poor, for instance the patent No. is a kind of hollow shafting particle damper of what CN101725656A mentioned. This patent can solve the vibration problem of rotating shaft.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the present invention provides the vibration absorber of a kind of high-speed rotating shaft system, the electric current that EM induction system produces is relied on to generate magnetic field through hot-wire coil, the centrifugal force that granule is subject to is offset by magnetic field force, grain edgesization extruding phenomenon is eliminated so that it is reach the optimum state of vibration damping with this.
Technical scheme: for solving above-mentioned technical problem, a kind of vibration absorber of the high-speed rotating shaft system of the present invention, including granule damper housing, it is filled with granule in granule damper housing, the both sides of described granule damper case top are separately installed with the first Magnet and second Magnet contrary with the first magnet polarities, it is installed with hollow shell below first Magnet and the second Magnet, bearing is installed in hollow shell, the inner ring of bearing connects support cylinder, support fixed installation in cylinder cored, iron core is wound with hot-wire coil, hot-wire coil is connected with the quoit being positioned in the middle of the first Magnet and the second Magnet.
As preferably, described hot-wire coil is externally provided with heat-sink shell.
As preferably, described heat-sink shell is circulus, comprises internal ring and outer shroud, is filled with coolant between internal ring and outer shroud.
As preferably, the material of described internal ring and outer shroud is the one in carbon steel, resin glass steel, and coolant is water or oil.
As preferably, described granule damper housing section is circular, and the height of granule damper housing is 30mm��200mm, highly takes 0.8��2 with the ratio of diameter.
As preferably, the diameter that described granule is is 0.8��3mm, and granule filling rate in granule damper housing is 20%��80%. Particle diameter is too little, and interparticle porosity is very low, and granule motion is very limited, and is unfavorable between granule and produces collision and friction, and the too big collision effect of particle diameter increases, and the noise of generation is obvious. Granule filling rate in granule damper housing is 20%��80%, and filling rate is too small, and amounts of particles is less, and the chance of collision and friction reduces each other; Filling rate is excessive, and particle aggregation together, limits the motion of granule, reduces collision and rubbing machine meeting.
As preferably, described granule is steel ball.
As preferably, the cylindrical material of described support is glass or plastics.
Present invention is mainly used for adapting to the vibration of the high-speed rotation axle system of complex environment, such as marine drive shafting vibration, the vibration of generating set drive shaft system.
Beneficial effect: the vibration absorber of the high-speed rotating shaft system of the present invention, has the advantage that
1. the granule being positioned at half storey is close to the edge of antivibrator under the influence of centrifugal force gradually, and the increase along with rotating speed, granule is eventually squeezed in edge zone in a large number, grain section shape is in the shape of the letter V, now at quoit continuous cutting magnetic induction line in the magnetic field rotated, magnetic flux in quoit creates induction electromotive force while changing, the closed-loop path that quoit and enamel-covered wire form defines directional current, the hot-wire coil being made up of enamel-covered wire creates magnetic field, the iron core inserted makes magnetic induction increase, under the action of a magnetic force, granule near iron core will break away from the effect of centrifugal force the very first time, draw close to antivibrator center gradually, make originally to press together, the granule of chaotic distribution can be recombinated, collision and the friction probability of granule are gradually increased, effectively increase granule damping, reach the purpose of rotating shaft vibration damping,
2., owing to having portion of energy to consume in the form of heat in the collision of granule and friction, hot-wire coil outside attachment heat-sink shell both can heat absorbing particles within, it is also possible to the heating of absorption hot-wire coil.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiments of the invention;
Fig. 2 is granule motion state diagram during high-speed rotation of the present invention;
Fig. 3 is hollow core housing tomograph of the present invention;
Wherein: 1, granule damper housing, the 2, first Magnet, 3, quoit, 4, hollow shell, 5, bearing, 6, support cylinder, 7, heat-sink shell, 8, coil, 9, iron core, 10, granule, 11 second Magnet.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further described.
As shown in Figure 1 to Figure 3, a kind of vibration absorber of the high-speed rotating shaft system of the present invention, including granule damper housing 1, it is filled with granule in granule damper housing 1, the both sides at described granule damper housing 1 top are separately installed with the first Magnet 2 and second Magnet 11 opposite polarity with the first Magnet 2, it is installed with hollow shell 4 below first Magnet 2 and the second Magnet, bearing 5 is installed in hollow shell 4, the inner ring of bearing 5 connects support cylinder 6, support fixed installation cored 9 in cylinder 6, iron core 9 is wound with hot-wire coil 8, hot-wire coil 8 is connected with the quoit 3 being positioned in the middle of the first Magnet 2 and the second Magnet.
In the present invention, heat-sink shell 7 is circulus, comprises internal ring and outer shroud, the material being filled with coolant, internal ring and outer shroud between internal ring and outer shroud is carbon steel, and the material that coolant is water or oil or heat-sink shell 7 is fiberglass, thickness is 10mm, and in fiberglass, the liquid of note is oil.
In the present invention, the cross sectional shape of granule damper housing 1 is circular, in granule damper housing 1, granule 10 filling rate is 50%, granule 10 is steel ball, and diameter is 2mm, and the height of granule damper shell 1 is 60mm, highly the ratio with diameter is 1.2, coil 8 selects copper paint envelope curve, and diameter of wire is 0.8mm, and the number of turn is 2500 circles.
The present invention is in use, the granule 10 being positioned at half storey is close to the edge of granule damper housing 1 under the influence of centrifugal force gradually, and the increase along with rotating speed, granule 10 is eventually squeezed in edge zone in a large number, granule 10 cross sectional shape is in the shape of the letter V, now at quoit 3 continuous cutting magnetic induction line in the magnetic field rotated, magnetic flux in quoit 3 creates induction electromotive force while changing, the closed-loop path that quoit 3 and hot-wire coil 8 form defines directional current, magnetic field is created at hot-wire coil 8, ferrum 9 core inserted makes magnetic induction increase, under the action of a magnetic force, granule 10 near iron core 9 will break away from the effect of centrifugal force the very first time, draw close to granule damper housing 1 center gradually, make originally to press together, the granule 10 of chaotic distribution can be recombinated, collision and the friction probability of granule 10 are gradually increased, effectively increase granule 10 damping, reach the purpose of rotating shaft vibration damping.
The above is only the preferred embodiment of the present invention; it is noted that, for those skilled in the art; under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (8)
1. the vibration absorber of a high-speed rotating shaft system, it is characterized in that: include granule damper housing, it is filled with granule in granule damper housing, the both sides of described granule damper case top are separately installed with the first Magnet and second Magnet contrary with the first magnet polarities, it is installed with hollow shell below first Magnet and the second Magnet, bearing is installed in hollow shell, the inner ring of bearing connects support cylinder, support fixed installation in cylinder cored, iron core is wound with hot-wire coil, hot-wire coil is connected with the quoit being positioned in the middle of the first Magnet and the second Magnet.
2. the vibration absorber of high-speed rotating shaft system according to claim 1, it is characterised in that: described hot-wire coil is externally provided with heat-sink shell.
3. the vibration absorber of high-speed rotating shaft system according to claim 2, it is characterised in that: described heat-sink shell is circulus, comprises internal ring and outer shroud, is filled with coolant between internal ring and outer shroud.
4. the vibration absorber of high-speed rotating shaft system according to claim 3, it is characterised in that: the material of described internal ring and outer shroud is the one in carbon steel, resin glass steel, and coolant is water or oil.
5. the vibration absorber of high-speed rotating shaft system according to claim 4, it is characterised in that: described granule damper housing section is circular, and the height of granule damper housing is 30mm��200mm, highly takes 0.8��2 with the ratio of diameter.
6. the vibration absorber of high-speed rotating shaft system according to claim 1, it is characterised in that: the diameter of described granule is 0.8��3mm, and granule filling rate in granule damper housing is 20%��80%.
7. the vibration absorber of high-speed rotating shaft system according to claim 6, it is characterised in that: described granule is steel ball.
8. the vibration absorber of high-speed rotating shaft system according to claim 1, it is characterised in that: the cylindrical material of described support is glass or plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410831450.5A CN104500635B (en) | 2014-12-26 | 2014-12-26 | A kind of vibration absorber of high-speed rotating shaft system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410831450.5A CN104500635B (en) | 2014-12-26 | 2014-12-26 | A kind of vibration absorber of high-speed rotating shaft system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104500635A CN104500635A (en) | 2015-04-08 |
| CN104500635B true CN104500635B (en) | 2016-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410831450.5A Expired - Fee Related CN104500635B (en) | 2014-12-26 | 2014-12-26 | A kind of vibration absorber of high-speed rotating shaft system |
Country Status (1)
| Country | Link |
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| CN (1) | CN104500635B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105805209A (en) * | 2016-05-18 | 2016-07-27 | 浙江工业职业技术学院 | Magnetic field type shock absorption leg of mechanical equipment |
| CN105937573B (en) * | 2016-06-30 | 2018-03-27 | 西安交通大学 | A kind of particle damping shock absorption device under weightlessness |
| CN106167080B (en) * | 2016-07-19 | 2017-10-24 | 尹燕梁 | Submarine denoising device |
| CN107165969B (en) * | 2017-06-27 | 2019-10-08 | 武汉科技大学 | Screw piston bar granule damper |
| CN107165974B (en) * | 2017-06-30 | 2019-01-01 | 武汉科技大学 | Electromagnetic particle damping isolation device |
| CN107339356B (en) * | 2017-07-17 | 2018-12-07 | 武汉科技大学 | A kind of semi-active type electromagnetic particle damping absorber and method |
| CN108443325B (en) * | 2018-04-02 | 2019-06-11 | 江苏理工学院 | Impact damper for high-speed rotating machine |
| CN113889361A (en) * | 2020-07-03 | 2022-01-04 | 西门子股份公司 | Contact bounce reducing device for switching device |
| CN113532818A (en) * | 2021-06-17 | 2021-10-22 | 武汉理工大学 | Shafting test bed based on particle damper |
| CN114869380B (en) * | 2022-03-24 | 2022-12-06 | 江苏省肿瘤医院 | Vibration sleeve-removing device for plug coil |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1054596A1 (en) * | 1982-01-29 | 1983-11-15 | Центр Методологии Изобретательства | Damper |
| JPS63180740A (en) * | 1987-01-19 | 1988-07-25 | Taisei Corp | Shock force absorption device for structure |
| JPH0979322A (en) * | 1995-09-08 | 1997-03-25 | Ishikawajima Harima Heavy Ind Co Ltd | Variable weight flywheel device |
| CN200982373Y (en) * | 2006-12-06 | 2007-11-28 | 汪建晓 | Magnet rheological fluid elastomer damper for rotor oscillation control |
| DE102007046760A1 (en) * | 2007-09-28 | 2009-04-02 | Robert Bosch Gmbh | Auxiliary handle device |
| JP5244018B2 (en) * | 2009-04-09 | 2013-07-24 | 株式会社神戸製鋼所 | Vibration control structure |
| CN101725656B (en) * | 2010-01-14 | 2012-06-13 | 南京航空航天大学 | Hollow shafting particle damper |
| DE102011079869B4 (en) * | 2011-07-27 | 2020-08-06 | Bayerische Motoren Werke Aktiengesellschaft | Frequency-independent absorber |
| CN202326875U (en) * | 2011-11-16 | 2012-07-11 | 张楚然 | Adjustable damper |
| CN103727167B (en) * | 2014-01-23 | 2015-11-18 | 重庆大学 | A kind of intelligent vibration isolator for micro-vibration control |
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2014
- 2014-12-26 CN CN201410831450.5A patent/CN104500635B/en not_active Expired - Fee Related
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| CN104500635A (en) | 2015-04-08 |
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Granted publication date: 20160608 Termination date: 20171226 |