CN115928513A - Damping alloy-based rail transit vibration and noise reduction device - Google Patents
Damping alloy-based rail transit vibration and noise reduction device Download PDFInfo
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- CN115928513A CN115928513A CN202310057932.9A CN202310057932A CN115928513A CN 115928513 A CN115928513 A CN 115928513A CN 202310057932 A CN202310057932 A CN 202310057932A CN 115928513 A CN115928513 A CN 115928513A
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Abstract
The invention relates to a damping alloy-based rail transit vibration and noise reduction device which comprises a lower fastening plate, wherein the lower fastening plate is arranged on a steel rail, and at least one spring type damping alloy vibration reduction piece is arranged on the lower fastening plate or between the lower fastening plate and a track bed. The spring type damping alloy vibration attenuation pieces can be selected to be different structures, and the spring type damping alloy vibration attenuation pieces with different structures can be arranged in a plurality of same types or can be combined and used in different types. Compared with the prior art, the damping alloy has high energy consumption efficiency, can exert good damping performance when in micro strain, and can effectively widen the vibration damping frequency band; the application range is wide; the material has good mechanical property, and can be used as a structural member; convenient maintenance and the like.
Description
Technical Field
The invention belongs to the field of vibration and noise reduction of rail transit, and particularly relates to a vibration and noise reduction device of rail transit based on damping alloy.
Background
In recent years, urban rail transit in China is continuously developed at a high speed, wherein a subway is taken as an urban main artery with the largest urban rail transit system occupation ratio, the highest transport capacity and the fastest speed, and has great work performance in the aspects of effectively relieving traffic jam, assisting novel urbanization construction, improving urban high-density environment and the like, but the problem of vibration noise of the environment along the line caused by the subway still has a larger improvement space, and the problems of vehicle body vibration and noise in a vehicle are increasingly prominent.
Specifically, except for the steel rail vibration absorber at the vibration source part, vibration isolation measures such as 'vibration damping' fasteners, elastic sleepers, floating slab tracks, bridge supports and the like are generally adopted in the whole track traffic transmission path, and mainly the vibration transfer rate of each layer of subsystem is effectively adjusted by utilizing the low rigidity or large vibration mass of the subsystem, so that the vibration energy generated at the vibration source part is redistributed according to frequency components, but the problems of high vibration isolation efficiency and low energy consumption efficiency still exist. The damping alloy not only has the physical characteristics of converting mechanical vibration energy into heat energy and dissipating the heat energy, but also has better mechanical property. For example, the complex phase type damping alloy generates internal loss through the plastic deformation of a soft phase, and is low in cost and easy to process. The twin crystal type damping alloy generates inelastic strain through a coherent twin crystal interface and dissipates external vibration energy. The magnetic domain interface of a proper part in the ferromagnetic damping alloy moves irreversibly due to the inverse effect of the magneto-mechanical effect, the phenomenon that the strain lags behind the stress is generated on a stress-strain curve, and then internal loss is generated to dissipate vibration energy, and the damping performance is excellent at high temperature and low strain amplitude. The dislocation type damping alloy generates additional dislocation strain in an elastic strain range so as to dissipate vibration energy, and has the characteristics of small specific gravity, good corrosion resistance, higher damping performance and the like. Under the action of periodic stress, the epsilon martensite and the stacking fault interface in the Fe-Mn-based damping alloy can slide relatively to generate internal loss, and the Fe-Mn-based damping alloy has the characteristics of damping performance increased along with the increase of strain amplitude, high strength, low cost and the like.
However, the damping alloy is mainly used for vibration reduction and still is theoretical research, and the related mature technology for preparing the damping alloy into a vibration reduction piece and applying the vibration reduction piece to the rail transit field is lacked at present.
Disclosure of Invention
In order to overcome the technical defects of the traditional vibration and noise reduction technology, the invention provides a damping alloy-based rail transit vibration and noise reduction device.
The damping alloy-based rail transit vibration damping and noise reduction device provided by the invention can be efficient and stable, can play a good vibration damping effect at a vibration source, can effectively widen a vibration damping frequency band, has good mechanical properties and is convenient to maintain. On the other hand, the specific scheme that the damping alloy is prepared into the damping piece to be applied to the field of rail transportation is provided, the problems of vibration and noise generated when the steel rail, the rail plate and the like vibrate can be further effectively solved on the premise that the original vibration isolation grade is not changed, and the damping vibration isolation device has important engineering value.
The purpose of the invention can be realized by the following technical scheme:
the invention provides a damping alloy-based rail transit vibration and noise reduction device which comprises a lower fastening plate, wherein the lower fastening plate is arranged on a steel rail, and at least one spring type damping alloy vibration reduction piece is arranged on the lower fastening plate or between the lower fastening plate and a track bed.
In an embodiment of the present invention, the lower fastening plate is provided with an upper pressing sheet, the rail bottom of the steel rail is embedded in the groove of the lower fastening plate, and the upper pressing sheet, the rail bottom of the steel rail and the lower fastening plate are connected through a bolt, a rivet, a key or a pin. The mode of adopting bolted connection, riveting, key-type connection or pin connection makes simple structure, is convenient for change.
In one embodiment of the present invention, the upper pressing piece, the rail bottom of the steel rail, and the lower fastening plate are connected by fastening bolts, and the lower surface of the upper pressing piece and the upper surface of the rail bottom of the steel rail are fixed by the fastening bolts.
In an embodiment of the present invention, the spring-type damping alloy vibration damping member is selected from a coil spring-type damping alloy vibration damping member, a disc spring-type damping alloy vibration damping member, a serpentine spring-type damping alloy vibration damping member, a tuning fork-type damping alloy vibration damping member, a die spring-type damping alloy vibration damping member, a wave spring-type damping alloy vibration damping member, a pagoda spring-type damping alloy vibration damping member, a ring spring-type damping alloy vibration damping member, or a diaphragm spring-type damping alloy vibration damping member. When the spring type damping alloy vibration attenuation pieces are selected to be different structures, the spring type damping alloy vibration attenuation pieces with different structures can be arranged in a plurality of same modes, and different modes can be selected for combined use.
In an embodiment of the present invention, the spring-type damping alloy damping member is selected from a coil spring-type damping alloy damping member, a disc spring-type damping alloy damping member, a serpentine spring-type damping alloy damping member, a mold spring-type damping alloy damping member, a wave spring-type damping alloy damping member, a pagoda spring-type damping alloy damping member, an annular spring-type damping alloy damping member, or a diaphragm spring-type damping alloy damping member, and at this time, a bottom connecting plate is disposed on the track bed, and the upper end of the coil spring-type damping alloy damping member, the disc spring-type damping alloy damping member, the serpentine spring-type damping alloy damping member, the mold spring-type damping alloy damping member, the wave spring-type damping alloy damping member, the pagoda spring-type damping alloy damping member, the annular spring-type damping alloy member, or the diaphragm spring-type damping alloy damping member is connected to the lower fastening plate, and the lower end is connected to the bottom connecting plate.
In an embodiment of the present invention, a fixed male ring is disposed on a surface of the lower fastening plate, a fixed female ring is disposed on a surface of the bottom connecting plate, and the fixed male ring and the fixed female ring are used for mounting a coil spring type damping alloy damping member, a disc spring type damping alloy damping member, a die spring type damping alloy damping member, a wave spring type damping alloy damping member, and an annular spring type damping alloy damping member.
In an embodiment of the present invention, the disc spring type damping alloy vibration damper is divided into an internal type and an external type, the installation of the internal type disc spring type damping alloy vibration damper needs an internal type disc spring pressing plate and an action cavity besides a fixed male ring, the action cavity is located on the bottom connecting plate, the internal type disc spring type damping alloy vibration damper is arranged in the action cavity, the internal type disc spring pressing plate is arranged at the upper end of the internal type disc spring type damping alloy vibration damper, the lower end of the internal type disc spring type damping alloy vibration damper is directly located on the bottom connecting plate, the fixed male ring on the surface of the lower fastening plate extends into the action cavity to press the internal type disc spring pressing plate.
In an embodiment of the present invention, an upper limiting groove is disposed on a surface of the lower fastening plate, a lower limiting groove is disposed on a surface of the bottom connecting plate, and the upper limiting groove and the lower limiting groove are used for mounting a serpentine spring type damping alloy damping member, a pagoda spring type damping alloy damping member, and a diaphragm spring type damping alloy damping member.
In an embodiment of the present invention, a guide post is disposed on a surface of the lower fastening plate, a through hole for matching with the guide post to move is disposed on a surface of the bottom connecting plate, and the guide post is used for matching with installation of the coil spring type damping alloy damping member, the disc spring type damping alloy damping member, the pagoda type damping alloy damping member, the die spring type damping alloy damping member, the wave spring type damping alloy damping member, and the ring spring type damping alloy damping member.
In one embodiment of the present invention, the spring-type damping alloy vibration damper is selected as a tuning fork-type damping alloy vibration damper, and in this case, mounting grooves for mounting the tuning fork-type damping alloy vibration damper are provided at both sides of the lower fastening plate.
In one embodiment of the present invention, the tuning fork type damping alloy vibration damper may be used in combination with various types of damping alloys such as a disc spring type damping alloy vibration damper.
In one embodiment of the present invention, the damping alloy is made of alloy materials having different damping mechanisms, such as a complex phase type damping alloy, a dislocation type damping alloy, a twin crystal type damping alloy, a ferromagnetic damping alloy, or a Fe — Mn based damping alloy.
In one embodiment of the invention, the bottom connecting plate is connected with the track bed in a bolt connection mode, a pin connection mode, a key connection mode or a cement pouring integration mode.
Although the damping mechanisms of different types of damping alloys are different, under the action of an external load, the alloy can effectively absorb and dissipate vibration energy through the movement of an internal damping source, can play a role in vibration reduction and noise reduction from a vibration source or a transmission path when the traditional vibration reduction means cannot meet the requirements, and is particularly suitable for working conditions with strict high stability requirements.
The damping alloy-based rail transit vibration attenuation and noise reduction device provided by the invention can realize vibration attenuation and noise reduction, and is mainly determined by the following method:
s10: and establishing a mechanism model of the main vibration system.
S20: and determining the frequency and the vibration mode of the main vibration structure by performing modal analysis on the main vibration structure, and acquiring the position of the maximum value of the modal vibration mode vector of the main vibration structure.
S30: and (3) performing test verification on the main vibration structure mechanism model by a structural dynamics research method to determine the accuracy of S20.
S40: and comprehensively analyzing the vibration transmission path of the main vibration structure and S20 and S30, and determining the design installation position of the damping alloy.
S50: the design guidance is that the vibration reduction and isolation grade of the original track is not changed, and the energy consumption efficiency is effectively improved, so that the design scheme of the damping alloy is further optimized.
Compared with the prior art, the technical scheme of the invention has the following advantages and beneficial effects:
1. the application range is wide: the damping alloy can play a role in vibration reduction and noise reduction at a vibration source and can be applied to the fields of high-end equipment such as aerospace, ships and naval vessels and the like; the vibration causes complicated fields such as machinery and equipment manufacturing, transportation equipment manufacturing, rail transit and the like; precision instruments, chips and other fields with higher stability requirements.
2. Good mechanical properties: compared with other damping materials, such as polymer damping materials and damping composite materials, the damping alloy has good mechanical properties, high strength and rigidity, excellent creep resistance, excellent durability and excellent processing performance, and can be used as a structural member and an auxiliary bearing pressure-bearing member.
3. The energy consumption efficiency is high: at the vibration source, the damping alloy absorbs the vibrational energy through a damping mechanism inside the material and converts it into other forms of energy dissipation. The traditional vibration reduction and noise reduction measures, such as the traditional steel rail vibration absorber, have narrow vibration reduction frequency band and poor effect. Compared with the damping alloy, the damping alloy can effectively widen the vibration reduction frequency band; when the strain is small, the ferromagnetic damping alloy can play a good damping role, and the energy consumption effect is obvious.
4. Maintenance is facilitated: the invention adopts bolts, key connections and pin connections among various damping alloy devices, upper compressing plates, lower fastening plates and other components, has simple structure and is convenient to overhaul and replace.
5. The device provided by the invention can improve the comprehensive vibration reduction and noise reduction level of urban rail transit, provides a new solution for the problems of deteriorated wheel-rail relationship and rail structure defects, and enables a novel functional material to serve major projects to a real place. The invention has high energy consumption efficiency, and the damping alloy can exert good damping performance and effectively widen the damping frequency band when in micro strain; the application range is wide; the material has good mechanical property and can be used as a structural member; convenient maintenance and the like.
Drawings
Fig. 1 is a schematic structural view of a coil spring type damping alloy damping device provided in embodiment 1 of the present invention;
fig. 2 is a schematic structural view of a butterfly spring type damping alloy vibration damping device provided in embodiment 2 of the present invention;
fig. 3 is a schematic structural view of an external disc spring type damping alloy in the disc spring type damping alloy vibration damping device provided in embodiment 2 of the present invention;
FIG. 4 isbase:Sub>A cross-sectional view of the section A-A in FIG. 3;
fig. 5 is a schematic structural view of a disc spring type damping alloy embedded in the damping device of a disc spring type damping alloy according to embodiment 3 of the present invention;
FIG. 6 is a cross-sectional view of the cross-section B-B in FIG. 5;
fig. 7 is a schematic structural view of a serpentine spring type damping alloy damping device provided in embodiment 4 of the present invention;
FIG. 8 is a schematic structural view of a tuning-fork damping alloy vibration damping device according to embodiment 5 of the present invention;
fig. 9 is a schematic view of a rail structure for mounting a tuning fork-type damping alloy vibration damping device according to embodiment 6 of the present invention.
The reference numbers in the figures indicate:
the damping device comprises an upper pressing piece 1, a lower fastening plate 2, a spiral spring type damping alloy damping piece 30, a fixed male ring 4, a fixed female ring 5, a mounting groove 6, a bottom connecting plate 7, a fastening bolt 8, a disc spring type damping alloy damping piece 31, a guide post 311, a built-in disc spring pressing plate 312, an action cavity 313, a snake spring type damping alloy damping piece 32, an upper limiting groove 321, a lower limiting groove 322, a tuning fork type damping alloy damping piece 33, a track bed 9 and a steel rail 10.
Detailed Description
The invention is described in detail below with reference to the figures and the specific embodiments.
Example 1
Referring to fig. 1, the present embodiment provides a damping alloy-based rail transit vibration damping and noise reduction device.
In this embodiment, the spring-type damping alloy damping member is selected to be the coil spring-type damping alloy damping member 30, and a plurality of coil spring-type damping alloy damping members 30 may be arranged at intervals to be used in combination.
In this embodiment, the device includes mounting plate 2 down, mounting plate 2 installs on rail 10 down, be provided with compressing tablet 1 down on mounting plate 2, the rail foot of rail 10 inlays in the recess of mounting plate 2 down, go up compressing tablet 1, the rail foot of rail 10 and connect through fastening bolt 8 between the mounting plate 2 down, it is fixed through the laminating of fastening bolt 8 to go up compressing tablet 1 lower surface and the rail foot upper surface of rail 10.
The track ballast bed is characterized in that a bottom connecting plate 7 is arranged on the track ballast bed 9, a fixed male ring 4 is arranged on the surface of the lower fastening plate 2, a fixed female ring 5 is arranged on the surface of the bottom connecting plate 7, and the fixed male ring 4 and the fixed female ring 5 are used for being matched with the installation of a spiral spring type damping alloy damping part 30.
With further reference to fig. 1, upon selecting the coil spring type damping alloy vibration damper 30 in the present embodiment, mounting grooves 6 may be further provided on both sides of the lower fastening plate 2, the mounting grooves 6 being used for mounting of the tuning fork type damping alloy vibration damper 33. This enables the combined use of the coil spring type damping alloy vibration absorbing member 30 and the tuning fork type damping alloy vibration absorbing member 33.
When a train passes by, the damping alloy absorbs vibration energy through a damping mechanism in the material and converts the vibration energy into energy in other forms for dissipation, and the energy consumption effect is obvious.
Example 2
Referring to fig. 2, the difference from embodiment 1 is that in this embodiment, the spring-type damping alloy damping member is selected to be a disc spring-type damping alloy damping member 31, and a plurality of disc spring-type damping alloy damping members 31 may be arranged at intervals to be used in combination.
With further reference to fig. 3 and 4, in this embodiment, the disc spring type damping alloy vibration damper 31 is an external type, the surface of the lower fastening plate 2 is provided with a guide post 311, the surface of the bottom connecting plate 7 is provided with a through hole for matching the guide post 311, and the guide post 311 is used for matching the external disc spring type damping alloy vibration damper 31 for installation.
In the present embodiment, mounting grooves 6 may be provided on both sides of the lower fastening plate 2, the mounting grooves 6 being used for mounting of the tuning fork-type damping alloy vibration dampers 33. This makes it possible to realize the combined use of the coil spring type damping alloy vibration attenuating member 30 and the tuning fork type damping alloy vibration attenuating member 33.
Example 3
With further reference to fig. 5 and 6, the difference from embodiment 2 is that, in this embodiment, the disc spring type damping alloy vibration damping member 31 is a built-in structure, the built-in disc spring type damping alloy vibration damping member is installed by requiring a built-in disc spring pressure plate 312 and an action cavity 313 in addition to the fixed male ring 4, the action cavity 313 is located on the bottom connecting plate 7, the built-in disc spring type damping alloy vibration damping member is arranged in the action cavity 313, the built-in disc spring pressure plate 312 is arranged at the upper end of the built-in disc spring type damping alloy vibration damping member, the lower end of the built-in disc spring type damping alloy vibration damping member is directly located on the bottom connecting plate 7, the fixed male ring 4 on the surface of the lower fastening plate 2 extends into the action cavity 313 to press the built-in disc spring pressure plate 312.
In the present embodiment, mounting grooves 6 may be provided on both sides of the lower fastening plate 2, the mounting grooves 6 being used for mounting of the tuning fork-type damping alloy vibration dampers 33. This makes it possible to realize the combined use of the coil spring type damping alloy vibration attenuating member 30 and the tuning fork type damping alloy vibration attenuating member 33.
Example 4
Referring to fig. 7, the difference from embodiment 1 is that, in this embodiment, the spring-type damping alloy damping member is selected to be a serpentine spring-type damping alloy damping member 32, and a plurality of serpentine spring-type damping alloy damping members 32 may be arranged at intervals to be used in combination.
In this embodiment, the upper limiting groove 321 is disposed on the surface of the lower fastening plate 2, the lower limiting groove 322 is disposed on the surface of the bottom connecting plate 7, and the upper limiting groove 321 and the lower limiting groove 322 are used for mounting the serpentine spring type damping alloy damping member 32. The serpentine spring type damping alloy damper 32 is connected by bolting or riveting.
In the present embodiment, mounting grooves 6 may be provided on both sides of the lower fastening plate 2, the mounting grooves 6 being used for mounting of the tuning fork-type damping alloy vibration dampers 33. This makes it possible to realize the combined use of the coil spring type damping alloy vibration attenuating member 30 and the tuning fork type damping alloy vibration attenuating member 33.
Example 5
Referring to fig. 8, the difference from embodiment 1 is that in this embodiment, the spring type damping alloy vibration absorbing member is selected as a tuning fork type damping alloy vibration absorbing member 33, and a plurality of tuning fork type damping alloy vibration absorbing members 33 are arranged at intervals to be used in combination.
In this embodiment, mounting grooves 6 are provided on both sides of the lower fastening plate 2, and the mounting grooves 6 are used for mounting the tuning-fork damping alloy vibration dampers 33. Inserting the fixed end of the tuning fork type damping alloy vibration attenuation piece 33 into the mounting groove 6, and then fixing the tuning fork type damping alloy vibration attenuation piece by the fastening bolt 8; the upper pressing piece 1 is connected with the lower fastening plate 2 through a fastening bolt 8. Since the tuning fork type damping alloy vibration reduction piece 33 can change the vibration frequency according to the length and thickness of the tuning fork arm, the vibration reduction and noise reduction device has the function of frequency division adjustment.
Example 6
Referring to fig. 9, the present embodiment provides a schematic diagram of a track structure for installing a tuning fork type damping alloy vibration damper, wherein the bottom connecting plate 7 is connected to the track bed 9 by bolts.
In the above embodiments, the damping alloy is made of alloy materials with different damping mechanisms, such as complex phase type damping alloy, dislocation type damping alloy, twin crystal type damping alloy, ferromagnetic damping alloy or Fe-Mn based damping alloy, as required. Although the damping mechanisms of different types of damping alloys are different, under the action of an external load, the alloy can effectively absorb and dissipate vibration energy through the movement of an internal damping source, can play a role in vibration reduction and noise reduction from a vibration source or a transmission path when the traditional vibration reduction means cannot meet the requirements, and is particularly suitable for working conditions with strict high stability requirements.
The rail transit vibration and noise reduction device based on the damping alloy provided by the embodiment has high energy consumption efficiency, and the damping alloy can play a good damping property and effectively widen the vibration reduction frequency band when in micro strain; the application range is wide; the material has good mechanical property, and can be used as a structural member; convenient maintenance and the like.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (10)
1. The damping alloy-based rail transit vibration and noise reduction device is characterized by comprising a lower fastening plate (2), wherein the lower fastening plate (2) is arranged on a steel rail (10), and at least one spring type damping alloy vibration reduction piece is arranged on the lower fastening plate (2) or between the lower fastening plate (2) and a track bed (9).
2. The damping alloy-based rail transit vibration and noise reduction device according to claim 1, wherein an upper compression piece (1) is arranged on the lower fastening plate (2), the rail bottom of the steel rail (10) is embedded in a groove of the lower fastening plate (2), and the upper compression piece (1), the rail bottom of the steel rail (10) and the lower fastening plate (2) are connected through bolts, rivets, keys or pins.
3. The damping alloy-based rail transit vibration and noise reduction device according to claim 1, wherein the spring-type damping alloy vibration reduction member is selected from a coil spring-type damping alloy vibration reduction member (30), a disc spring-type damping alloy vibration reduction member (31), a serpentine spring-type damping alloy vibration reduction member (32), a die spring-type damping alloy vibration reduction member, a wave spring-type damping alloy vibration reduction member, a pagoda spring-type damping alloy vibration reduction member, an annular spring-type damping alloy vibration reduction member or a diaphragm spring-type damping alloy vibration reduction member, at this time, a bottom connecting plate (7) is arranged on the track bed (9), the upper end of the coil spring-type damping alloy vibration reduction member (30), the disc spring-type damping alloy vibration reduction member (31), the vibration reduction spring-type damping alloy vibration reduction member (32), the die spring-type damping alloy member, the wave spring-type damping alloy vibration reduction member, the pagoda spring-type damping alloy vibration reduction member, the serpentine spring-type damping alloy vibration reduction member or the diaphragm spring-type damping alloy vibration reduction member is connected with the lower fastening plate (2), and the lower end is connected with the bottom connecting plate (7).
4. The damping alloy-based rail transit vibration and noise reduction device according to claim 3, wherein a fixed male ring (4) is arranged on the surface of the lower fastening plate (2), a fixed female ring (5) is arranged on the surface of the bottom connecting plate (7), and the fixed male ring (4) and the fixed female ring (5) are used for being matched with a spiral spring type damping alloy vibration damping piece (30), a disc spring type damping alloy vibration damping piece (31), a die spring type damping alloy vibration damping piece, a wave spring type damping alloy vibration damping piece and a ring spring type damping alloy vibration damping piece for installation.
5. The damping alloy-based rail transit vibration and noise reduction device according to claim 4, wherein the disc spring type damping alloy damping member (31) is divided into an internal type and an external type, the installation of the internal type disc spring type damping alloy damping member requires an internal type disc spring pressing plate (312) and an action cavity (313) in addition to the fixed male ring (4), the action cavity (313) is located on the bottom connecting plate (7), the internal type disc spring type damping alloy damping member is arranged in the action cavity (313), the internal type disc spring pressing plate (312) is arranged at the upper end of the internal type disc spring type damping alloy damping member, the lower end of the internal type disc spring type damping alloy damping member is directly located on the bottom connecting plate (7), and the fixed male ring (4) on the surface of the lower fastening plate (2) extends into the action cavity (313) to press the internal type disc spring pressing plate (312).
6. The damping alloy-based rail transit vibration and noise reduction device is characterized in that an upper limiting groove (321) is formed in the surface of the lower fastening plate (2), a lower limiting groove (322) is formed in the surface of the bottom connecting plate (7), and the upper limiting groove (321) and the lower limiting groove (322) are used for being matched with a snake-shaped spring type damping alloy vibration damping piece (32), a pagoda type spring type damping alloy vibration damping piece and a diaphragm type spring type damping alloy vibration damping piece to be installed.
7. The damping alloy-based rail transit vibration and noise reduction device according to claim 3, wherein a guide post (311) is arranged on the surface of the lower fastening plate (2), a through hole for matching the guide post (311) in movement is arranged on the surface of the bottom connecting plate (7), and the guide post (311) is used for matching installation of a spiral spring type damping alloy vibration damping member (30), a disc spring type damping alloy vibration damping member (31), a pagoda type damping alloy vibration damping member, a die spring type damping alloy vibration damping member, a wave spring type damping alloy vibration damping member and a ring spring type damping alloy vibration damping member.
8. The damping alloy-based rail transit vibration and noise reduction device according to claim 3, wherein the bottom connecting plate (7) and the rail track bed (9) are connected in a bolt connection, a pin connection, a key connection or a cement pouring integration mode.
9. The damping alloy-based rail transit vibration and noise reduction device according to claim 1, wherein the spring type damping alloy vibration damping member is selected to be a tuning fork type damping alloy vibration damping member (33), and at this time, mounting grooves (6) are provided on both sides of the lower fastening plate (2), and the mounting grooves (6) are used for mounting the tuning fork type damping alloy vibration damping member (33).
10. The damping alloy-based rail transit vibration and noise reduction device according to claim 1, wherein the damping alloy is a complex phase type damping alloy, a dislocation type damping alloy, a twin crystal type damping alloy, a ferromagnetic damping alloy or a Fe-Mn based damping alloy.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117468282A (en) * | 2023-10-12 | 2024-01-30 | 北京市市政工程设计研究总院有限公司 | Rail structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117468282A (en) * | 2023-10-12 | 2024-01-30 | 北京市市政工程设计研究总院有限公司 | Rail structure |
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