CN110777574B - A dynamic vibration absorber for track vibration reduction and its application - Google Patents
A dynamic vibration absorber for track vibration reduction and its application Download PDFInfo
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- CN110777574B CN110777574B CN201911198955.1A CN201911198955A CN110777574B CN 110777574 B CN110777574 B CN 110777574B CN 201911198955 A CN201911198955 A CN 201911198955A CN 110777574 B CN110777574 B CN 110777574B
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- vibration absorber
- dynamic vibration
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- steel rail
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- 239000006096 absorbing agent Substances 0.000 title claims abstract description 53
- 230000009467 reduction Effects 0.000 title claims abstract description 49
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 31
- 239000010959 steel Substances 0.000 claims abstract description 31
- 238000013016 damping Methods 0.000 claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims abstract description 14
- 230000000694 effects Effects 0.000 claims abstract description 14
- 230000002238 attenuated effect Effects 0.000 claims abstract description 4
- 229920001971 elastomer Polymers 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 6
- 239000000806 elastomer Substances 0.000 claims 1
- 230000009471 action Effects 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 3
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- 238000005516 engineering process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 241001669679 Eleotris Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 229920000642 polymer Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
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- 230000002035 prolonged effect Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
- E01B19/003—Means for reducing the development or propagation of noise
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Railway Tracks (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention belongs to the field of vibration reduction and noise reduction, and particularly discloses a dynamic vibration absorber for track vibration reduction and application thereof. The dynamic vibration absorber comprises a spiral spring, a mass block, a base plate and a damper, wherein the upper end of the spiral spring is connected with the mass block, the lower end of the spiral spring is connected with the base plate, the damper is arranged between the mass block and the base plate and is used for adjusting the resonance frequency of the dynamic vibration absorber, and when the dynamic vibration absorber works, the inertia force generated by the relative motion between the mass block and the steel rail is used for generating reaction control force on the steel rail, so that the vibration reaction of the steel rail is attenuated, and the vibration reduction and noise reduction effects are achieved. When the steel rail is subjected to dynamic action and violent vibration, the invention can utilize the inertia force generated by the relative motion between the mass block and the steel rail to generate reaction control force on the steel rail, and exert energy consumption effect through the damper, and obviously attenuate the vibration reaction of the steel rail through the spring-damping tuning effect so as to achieve the effects of vibration reduction and noise reduction.
Description
Technical Field
The invention belongs to the field of vibration reduction and noise reduction, and particularly relates to a dynamic vibration absorber for track vibration reduction and application thereof.
Background
With the development of urban areas in China, the running density of rail transit is increased, more and more lines pass through areas with dense people in the urban areas, and the problems of vibration and noise pollution caused by continuously improving the running speed of a train are increasingly outstanding since the development of railway transit. Meanwhile, the ballastless track has been widely used in new high-speed railways in China with the advantages of high smoothness, high stability, less maintenance and the like. However, because the ballastless track has higher rigidity, the vibration absorption and noise reduction effects are poor, and huge vibration noise generated by running of the high-speed train is difficult to attenuate, the riding comfort level of passengers in the train is greatly reduced, certain noise pollution is caused to the environment along the line and the inside of the carriage, and even the planning and construction of a newly built railway can be directly influenced.
The traditional vibration and noise reduction method is to place a rubber pad under a sleeper, but the method has the problems of poor vibration and noise reduction effect, short service life of rubber easy to age and inconvenient replacement. The constraint damping noise reduction technology has poor adaptability to the track environment, and the quality of the vibration reduction effect has high requirements on the laying position. Along with the continuous development of science and technology, the high-speed rail is faster and faster, the vibration and noise generated by the high-speed rail are larger and larger, and the rubber pad and the constraint damping can not meet the current vibration reduction requirements.
Disclosure of Invention
In view of the above-mentioned drawbacks or improvements of the prior art, the present invention provides a dynamic vibration absorber for vibration reduction of a track and applications thereof, wherein the dynamic vibration absorber is capable of achieving vibration reduction and noise reduction by providing a mass block connected with a coil spring, and a damper disposed below the mass block, and consuming energy of vibration through a spring-damping tuning action, thereby being particularly suitable for application occasions of vibration reduction of a track.
In order to achieve the above object, according to one aspect of the present invention, there is provided a dynamic vibration absorber for vibration reduction of a rail, the dynamic vibration absorber comprising a coil spring, a mass block, a base plate, and a damper, wherein an upper end of the coil spring is connected to the mass block and a lower end thereof is connected to the base plate, the damper is disposed between the mass block and the base plate, and is used for adjusting a resonance frequency of the dynamic vibration absorber, and in operation, a reaction control force is generated on the rail by using an inertia force generated by a relative motion between the mass block and the rail, thereby damping a vibration reaction of the rail, thereby achieving a vibration reduction and noise reduction effect.
As a further preferred aspect, the damper is an cantilever type damper, which includes a fixed block and a cantilever beam, the fixed block is connected with the base plate, one end of the cantilever beam is connected with the fixed block, the other end is connected with the mass block, and the resonance frequency of the dynamic vibration absorber is adjusted by changing the length of the cantilever beam during operation.
Further preferably, the mass ratio of the mass block is 0.005-0.05.
According to another aspect of the invention, there is provided the use of the dynamic vibration absorber for rail vibration damping as described above in railways.
Further preferably, the base plate of the dynamic vibration absorber is connected with an elastic body and a damping body attached to the steel rail.
As a further preferred feature, the dynamic vibration absorber is provided on one or both sides of the rail.
Further preferably, the installation interval of the dynamic vibration absorber is 40 cm-120 cm.
In general, compared with the prior art, the above technical solution conceived by the present invention mainly has the following technical advantages:
1. The dynamic vibration absorber for the track vibration reduction can utilize the inertia force generated during the relative motion between the mass block and the steel rail to generate reaction control force on the steel rail when the steel rail bears the dynamic action to vibrate violently, and plays an energy consumption role through the damper, so that the vibration reaction of the steel rail is obviously attenuated through the spring-damping tuning action, the vibration reduction and noise reduction effects are achieved, the energy transferred by wheels and the track is reduced, the generation of vibration and noise is prevented, the service lives of the wheels and the track are prolonged, the railway use cost is reduced, and the noise pollution is reduced;
2. particularly, the cantilever beam type damper is adopted, and the resonant frequency of the dynamic vibration absorber can be changed by adjusting the length of the cantilever beam, so that the vibration reduction requirements of different track structures and different load working conditions are met;
3. In addition, the mass ratio of the mass block is optimized, so that the vibration frequency and amplitude of the mass block can be adjusted, and the motion track of the mass block is controlled within a certain range;
4. Meanwhile, the dynamic vibration absorber for track vibration reduction has the advantages of convenient installation and replacement and strong operability and adjustability in the application process, does not need to consider limit problems, can not cause interference to line communication, rail flaw detection and train running, and has the condition of large-scale popularization in high-speed railway lines;
5. In the application process, the installation distance of the dynamic vibration absorber is optimized, so that the dynamic vibration absorber can be flexibly regulated and controlled according to actual load working conditions and vibration reduction requirements.
Drawings
FIG. 1 is a schematic diagram of a dynamic vibration absorber for track vibration reduction provided by the invention mounted on both sides of a track;
FIG. 2 is a schematic diagram of the installation of the dynamic vibration absorber for track vibration reduction provided by the invention on a single side of a track;
FIG. 3 is a side view of the power vibration absorber for vibration reduction of a track provided by the present invention mounted on the track;
FIG. 4 is a schematic diagram of a dynamic vibration absorber for track vibration damping constructed in accordance with a preferred embodiment of the present invention;
fig. 5 is an enlarged view of the circled portion in fig. 4.
The same reference numbers are used throughout the drawings to reference like elements or structures, wherein:
the steel rail comprises a steel rail body, an elastic body, a mass block, a coil spring, a base plate, a damping body, a fixed block, a screw, a cantilever beam and a damper.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
As shown in fig. 1-5, the embodiment of the invention provides a dynamic vibration absorber for track vibration reduction, which comprises a coil spring 4, a mass block 3, a base plate 5 and a damper 10, wherein the upper end of the coil spring 4 is connected with the mass block 3, the lower end of the coil spring is connected with the base plate 5 and is positioned at four corners of the mass block 3 and the base plate 5, the damper 10 is arranged between the mass block 3 and the base plate 5 and is used for adjusting the resonance frequency of the dynamic vibration absorber, and during operation, the inertia force generated by the relative motion between the mass block 3 and the steel rail 1 is utilized to generate reaction control force on the steel rail 1, so that the vibration reaction of the steel rail 1 is reduced, and the vibration reduction and noise reduction effects are achieved.
Further, the damper 10 is an cantilever beam type damper, and comprises a fixed block 7 and a cantilever beam 9, wherein the fixed block 7 is connected with the base plate 5, one end of the cantilever beam 9 is connected with the fixed block 7, the other end of the cantilever beam is connected with the mass block 3 through a screw 8, the resonance frequency of the dynamic vibration absorber can be adjusted by changing the length of the cantilever beam 9, the section of the cantilever beam 9 is round or rectangular, vibration in multiple directions can be controlled simultaneously, and the adjustable cantilever beam has the advantage of being adjustable, and can meet the vibration reduction requirements of different track structures.
The rigidity of the dynamic vibration absorber for track vibration reduction is mainly borne by two parts, the supporting rigidity of the spiral spring 5 is fixed rigidity for balancing the weight of the mass block 3, and the bending rigidity of the cantilever beam 9 is adjustable rigidity for adjusting the resonance frequency of the damper 10.
Further, the mass block 3 can be a concrete block, a steel box filled with lead or a steel ring which surrounds the outside of the structure and is filled with lead, the size of the mass block 3 is determined by the mass ratio, the mass ratio of the mass block 3 is 0.005-0.05 and is used for adjusting the vibration frequency and amplitude of the mass block 3 to enable the mass block to conform to the frequency of rail vibration, so that the vibration reduction effect is achieved, and meanwhile, the movement track of the mass block 3 can be controlled within a certain range, and collision between overlarge displacement and the steel rail 1 is avoided.
As shown in fig. 1 to 3, according to another aspect of the present invention, an application of the above-mentioned dynamic vibration absorber for track vibration reduction on a railway is proposed, an elastic body 2 is attached to a rail 1, a damping body 6 is attached to the elastic body 2, and a base plate 5 of the dynamic vibration absorber is connected to the damping body 6 for fixing. The damping body 6 is shaped according to different sections of the steel rail 1 to be attached and filled so as to ensure that the base plate 5 of the dynamic vibration absorber is positioned on a whole plane. The elastic body 2 takes polyurethane as a main material, one or more of rubber particles, rubber powder, wood dust, mineral materials and the like are selected as filling materials, the damping body 6 is made of a plastic polymer flexible material, and the elastic body 2 and the damping body 6 are both insulating materials.
The steel rail type selected in the embodiment is U71MN 60kg/m, and the structure and the arrangement method of the power absorber energy consumption device are also applicable to steel rails of other types. The dynamic vibration absorber can be arranged on one side or two sides of the steel rail 1, and the dynamic vibration absorber is ensured to have enough space margin from the top surface and the rail web of the steel rail 1. When the dynamic vibration absorber consumes energy in self-vibration, the distance between the outermost edge of the mass block 3 and the top surface or the rail web of the steel rail 1 is not exceeded by the distance between the mass block 3 and the inner edge of the mass block 3, namely the mass block 3 can not touch the steel rail 1 during working.
Further, the dynamic vibration absorbers are arranged along the running direction of the train of the steel rail 1, the number and the distance can be correspondingly adjusted according to the vibration reduction energy consumption requirement, and the installation distance of the dynamic vibration absorbers is preferably 40 cm-120 cm, so that the dynamic vibration absorbers can be flexibly regulated and controlled according to actual load working conditions and vibration reduction requirements, poor vibration reduction effect caused by overlarge distance is avoided, and meanwhile the problem that vibration reduction accuracy is too low caused by overlarge distance is avoided.
In summary, the technical principle of the above structure is that when the rail 1 is subjected to the dynamic action and vibrates vigorously, the vibration is continuously transmitted after being primarily consumed by the elastic body 2 and the damping body 6, the mass block 3 in the dynamic vibration absorber moves along with the vibration, the inertia force generated during the relative movement between the mass block 3 and the rail 1 is utilized to generate reaction control force on the rail 1, and the damper 10 also plays an energy consumption role, so that the vibration reaction of the rail 1 is obviously attenuated, and the vibration and noise reduction effects are achieved.
It will be readily appreciated by those skilled in the art that the foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (7)
1. The dynamic vibration absorber for track vibration reduction is characterized by comprising a spiral spring (4), a mass block (3), a base plate (5) and a damper (10), wherein the upper end of the spiral spring (4) is connected with the mass block (3), the lower end of the spiral spring is connected with the base plate (5), the damper (10) is arranged between the mass block (3) and the base plate (5) and is used for adjusting the resonance frequency of the dynamic vibration absorber, and during operation, an inertia force generated by relative motion between the mass block (3) and a steel rail (1) is utilized to generate a reaction control force on the steel rail (1), so that the vibration reaction of the steel rail (1) is attenuated, and the vibration reduction effect is achieved;
The damper (10) is an cantilever beam type damper and comprises a fixed block (7) and a cantilever beam (9), and the cross section of the cantilever beam (9) is round or rectangular.
2. A dynamic vibration absorber for track vibration damping according to claim 1, characterized in that the fixed block (7) is connected to the base plate (5), one end of the cantilever beam (9) is connected to the fixed block (7) and the other end is connected to the mass (3), and that the resonance frequency of the dynamic vibration absorber is adjusted by changing the length of the cantilever beam (9) in operation.
3. Dynamic vibration absorber for track vibration damping according to claim 1 or 2, characterized in that the mass ratio of the mass (3) is 0.005-0.05.
4. Use of a dynamic vibration absorber for track vibration damping according to any one of claims 1 to 3 on a railway.
5. Use of a dynamic vibration absorber for track vibration damping according to claim 4 on a railway, characterized in that the base plate (5) of the dynamic vibration absorber is connected to an elastomer (2) and a damping body (6) attached to the rail (1).
6. Use of a dynamic vibration absorber for track vibration damping according to claim 4 on a railway, characterized in that the dynamic vibration absorber is arranged on one or both sides of the rail (1).
7. The use of a dynamic vibration absorber for track vibration reduction as claimed in any one of claims 4 to 6 on a railway, wherein the installation pitch of the dynamic vibration absorber is 40cm to 120cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911198955.1A CN110777574B (en) | 2019-11-29 | 2019-11-29 | A dynamic vibration absorber for track vibration reduction and its application |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911198955.1A CN110777574B (en) | 2019-11-29 | 2019-11-29 | A dynamic vibration absorber for track vibration reduction and its application |
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| Publication Number | Publication Date |
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| CN110777574A CN110777574A (en) | 2020-02-11 |
| CN110777574B true CN110777574B (en) | 2025-01-28 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111288148B (en) * | 2020-02-12 | 2021-05-25 | 常州工学院 | High-damping double-frequency dynamic vibration reduction gear transmission device |
| CN111663373B (en) * | 2020-06-04 | 2022-02-15 | 深圳大学 | Shock absorption and isolation floating slab track |
| CN114737420B (en) * | 2021-11-03 | 2023-06-20 | 无锡希声科技有限公司 | Negative-rigidity steel rail damper and steel rail damping system |
| CN117005251B (en) * | 2023-08-04 | 2024-02-23 | 华东交通大学 | Rail vibration absorbing and sound insulating device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211446403U (en) * | 2019-11-29 | 2020-09-08 | 华中科技大学 | Dynamic vibration absorber for vibration reduction of track |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29714904U1 (en) * | 1997-08-21 | 1998-01-08 | Schrey & Veit GmbH, 71067 Sindelfingen | Vibration absorber on rails, especially on railroad tracks |
| GB2399123B (en) * | 2003-03-05 | 2006-03-01 | Corus Uk Ltd | Rail damper |
| WO2009059512A1 (en) * | 2007-11-07 | 2009-05-14 | Wai Lun Ho | Tunable vibration absorbing device |
| AU2012395964B2 (en) * | 2012-12-06 | 2017-11-23 | Schrey & Veit Gmbh | Vibration absorber arrangement |
| CN103343496B (en) * | 2013-07-10 | 2016-06-08 | 铁道第三勘察设计院集团有限公司 | A kind of track bump leveller |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN211446403U (en) * | 2019-11-29 | 2020-09-08 | 华中科技大学 | Dynamic vibration absorber for vibration reduction of track |
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