CN210770004U

CN210770004U - Road bed board damper

Info

Publication number: CN210770004U
Application number: CN201920530807.4U
Authority: CN
Inventors: 樊永欣; 黄承; 张用兵; 曾飞
Original assignee: Luoyang Sunrui Rubber and Plastic Technology Co Ltd
Current assignee: Luoyang Sunrui Rubber and Plastic Technology Co Ltd
Priority date: 2018-04-28
Filing date: 2019-04-18
Publication date: 2020-06-16
Anticipated expiration: 2029-04-18

Abstract

The utility model provides a road bed board damper, which comprises a cavity structure, wherein the cavity structure is provided with a filler which is arranged in the cavity structure in a flowing manner; the utility model discloses well flowable filler such as a large amount of discrete particles constitutes particle damping bump leveller jointly with the cavity on the railway roadbed board, particle damping bump leveller have the wide band characteristic, and it can play the effect of inhaling at 0 ~ 6000 Hz's extremely wide frequency range within range to can reduce the vibration of railway roadbed board at full frequency range almost.

Description

Road bed board damper

Technical Field

The utility model belongs to the railway traffic field specifically provides a road bed board attenuator.

Background

At present, more and more floating slab track bed structures are applied to solve the problems of vibration and noise pollution caused in the operation process of trains in urban rail transit lines. In the floating slab track bed structure, a track bed plate and elastic units (such as steel springs, track bed cushions and the like) below the track bed plate jointly form a mass-spring system, the frequency of the mass-spring system is low, a large amount of dynamic loads of trains can be isolated, and the dynamic loads can be prevented from being transmitted to a track bed foundation, so that the vibration condition of the track bed foundation and surrounding buildings is reduced. However, although the floating slab track bed structure isolates the vibration from the track bed foundation, the vibration energy from the excitation of the train passing through the floating slab track bed structure does not disappear, and the energy cannot be transmitted to the track bed foundation and returns to the track bed slab, the steel rail and the vehicle, which causes the vibration of the track bed slab, the steel rail and the vehicle to be intensified. This is especially the case in a small radius curve floating slab section, and the rail and wheel will be worn periodically due to excessive vibration, causing the phenomenon of "corrugation" of the rail and the polygon of the wheel. To solve this problem, the currently commonly used technology is the tuned mass damper TMD technology (TunedMassDamper), also called dynamic vibration absorber technology dva (dynamic vibration absorber): by adding an additional 'mass-spring-damping' system on the track bed slab, the natural frequency of the additional 'mass-spring-damping' system is superposed with certain natural frequency of the track bed system, so that an 'anti-resonance' condition is formed, and the additional 'mass-spring-damping' system absorbs the vibration energy of the track bed slab, thereby reducing the vibration of the track bed slab and the steel rail. However, the frequency band of the above-described resonance mass damper capable of suppressing the vibration of the track bed is very narrow, and the "antiresonance" of the resonance mass damper can only act in a frequency band near the natural frequency, and has no vibration damping effect in other frequency bands.

In view of this, the present invention is proposed.

Disclosure of Invention

An object of the utility model is to provide a road bed board attenuator to solve the frequency channel that resonance mass damper can restrain the vibration of road bed board very narrow, to the obscure problem of road bed board damping effect.

In order to realize the purpose, the utility model adopts the following technical scheme:

the utility model provides a road bed board attenuator, road bed board attenuator includes the cavity structure, be equipped with the filler in the cavity structure, the filler is flowable to be set up in the cavity structure.

Preferably, a cavity is arranged on the ballast bed plate, and the cavity forms a cavity structure.

Preferably, the bed plate is provided with an installation part, and the installation part is provided with a cavity structure.

Preferably, the cavity structure is fixedly installed at the edge of the ballast bed plate.

Preferably, the cavity structure is closely connected with the ballast bed plate, or the cavity structure is connected with the ballast bed plate through an elastic layer.

Preferably, the filler is discrete particles.

Preferably, the filler is a liquid or a solid-liquid mixture.

Preferably, the cavity structure is fixed on the ballast bed slab through a connecting piece.

Preferably, the cavity structure is arranged in a corner type, the cavity structure is arranged in an L-shaped structure, and the cavity structure comprises a first end and a second end.

Preferably, the first end of the cavity structure is closely connected with the upper surface of the ballast bed plate, and the second end of the cavity structure is closely connected with the side wall of the ballast bed plate.

Advantageous effects

The utility model provides a road bed board attenuator utilizes the filler of mobility such as a large amount of discrete particles to constitute particle damping bump leveller jointly with the cavity on the road bed board, particle damping bump leveller have the wide band characteristic, and it can play at 0 ~ 6000Hz extremely wide frequency range and inhale the shake effect to can reduce the vibration of road bed board at full frequency range almost.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic structural view of a first embodiment of the ballast bed plate damper of the present invention;

fig. 2 is a schematic structural view of a second embodiment of the ballast bed plate damper of the present invention;

fig. 3 is a schematic structural view of a third embodiment of the ballast bed plate damper of the present invention;

fig. 4 is a schematic structural view of a fourth embodiment of the ballast bed plate damper of the present invention.

For further clarity of explanation of the structure and connections between the various components of the present invention, the following reference numerals are given and described.

1-ballast bed plate, 2-discrete particles, 3-cavities, 4-elastic units, 5-connectors, 6-first end, 7-second end, 8-elastic layer

Through the above reference sign explanation, combine the embodiment of the utility model, can more clearly understand and explain the technical scheme of the utility model.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. In addition, the descriptions of "first", "second", and the like, referred to in the embodiments of the present invention, are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example one

As shown in fig. 1, the present embodiment provides a ballast bed damper comprising a cavity structure 3, discrete particles 2; the improved ballast bed is characterized in that a groove-type cavity is arranged at the upper part of the ballast bed plate 1, an elastic unit 4 is connected to the lower part of the ballast bed plate 1, the cavity forms a cavity structure 3, and a large number of discrete particles 2 are filled in the cavity structure 3. The plurality of discrete particles may be metal particles, such as iron powder, steel balls, lead balls, tungsten balls, and the like, or non-metal particles, such as sand, stone, ceramic particles, non-metal powder, and the like. The plurality of discrete particles may be one or more in size. One or more cavities can be arranged. The cavity is provided with an opening which can be opened or closed so as to adjust the number of discrete particles, thereby matching various frequencies. The track bed board directly transmits the vibration energy to the cavity of the cavity structure 3 when vibrating, the cavity and the discrete particles are driven to move, impact and friction occur among a large number of discrete particles, the vibration energy of the track bed board is dissipated, and therefore vibration of the track bed board is reduced.

Optionally, the filler is a liquid or a solid-liquid mixture.

The cavity structure on a large amount of discrete particles and the road bed board constitutes particle damping bump leveller in the road bed board attenuator that this embodiment provided jointly, particle damping bump leveller has the wide band characteristic, and it can all play the effect of inhaling at 0 ~ 6000 Hz's extremely wide frequency range to can reduce the vibration of road bed board at full frequency range almost.

Example two

As part of the embodiments of the present invention, the principle of the present embodiment is the same as that of the first embodiment, as shown in fig. 2, the difference is that: the ballast bed plate damper comprises a cavity structure 3 and discrete particles 2; the lower part of the ballast bed plate 1 is connected with an elastic unit 4, an installation part is arranged on the ballast bed plate 1, an accommodating cavity structure 3 is installed in the installation part, and the cavity structure 3 is installed in the installation part on the ballast bed plate 1. The cavity structure 3 is filled with a large number of discrete particles 2. The cavity wall of the cavity structure 3 is tightly connected with the ballast bed plate 1, so that vibration energy can be transmitted into the cavity of the cavity structure 3 from the ballast bed plate 1. The plurality of discrete particles may be metal particles, such as iron powder, steel balls, lead balls, tungsten balls, and the like, or non-metal particles, such as sand, stone, ceramic particles, non-metal powder, and the like. The plurality of discrete particles may be one or more in size. One or more cavities can be arranged. The cavity structure 3 is a metal cavity or other cavity meeting the rigidity requirement. The cavity is provided with an opening which can be opened or closed so as to adjust the number of discrete particles, thereby matching various frequencies. The ballast bed plate directly transmits the vibration energy into the cavity of the cavity structure 3 when vibrating. Optionally, the filler is a liquid or a solid-liquid mixture.

Preferably, the cavity structure 3 may be mounted in the mounting portion by an elastic layer. Further absorb vibration energy and improve the vibration reduction effect.

Preferably, the cavity structure 3 is fixed on the track bed board 1 through a connecting piece 5, and the connecting piece 5 is fixedly connected with the track bed board 1 through the side wall of the cavity structure 3.

A large amount of discrete particles and cavity structure constitute granule damping bump leveller jointly in this embodiment to install on the railway roadbed board, granule damping bump leveller have the wide band characteristic, and it can all play the effect of inhaling at 0 ~ 6000 Hz's extremely wide frequency range, thereby can reduce the vibration of railway roadbed board at full frequency range almost.

EXAMPLE III

The principle of the present embodiment is the same as that of the first embodiment, as shown in fig. 3, and the differences are: the ballast bed plate damper comprises a cavity structure 3, and the cavity structure 3 is fixedly installed at the edge of the ballast bed plate. The cavity structure 3 is arranged in a corner type, and the cavity structure 3 is arranged in an L-shaped structure and comprises a first end 6 and a second end 7. So that the first end 6 of the cavity structure 3 is closely connected with the upper surface of the track bed board, and the second end 7 of the cavity structure is closely connected with the side wall of the track bed board. The cavity structure 3 is filled with a large number of discrete particles 2. The cavity structure 3 is tightly connected with the ballast bed board 1, so that vibration energy can be transmitted into the cavity of the cavity structure 3 from the ballast bed board 1. The plurality of discrete particles may be metal particles, such as iron powder, steel balls, lead balls, tungsten balls, and the like, or non-metal particles, such as sand, stone, ceramic particles, non-metal powder, and the like. The plurality of discrete particles may be one or more in size. One or more cavities can be arranged. The cavity structure 3 is a metal cavity or other cavity meeting the rigidity requirement. The cavity is provided with an opening which can be opened or closed so as to adjust the number of discrete particles, thereby matching various frequencies. The ballast bed plate directly transmits the vibration energy into the cavity of the cavity structure 3 when vibrating. Optionally, the filler is a liquid or a solid-liquid mixture.

Preferably, an elastic layer can be arranged between the cavity structure 3 and the ballast bed plate. Further absorb vibration energy and improve the vibration reduction effect.

Preferably, the cavity structure 3 is fixed on the track bed board 1 through a connecting piece 5, and the connecting piece 5 is fixedly connected with the cavity structure through the upper surface of the track bed board 1.

Example four

As part of the embodiments of the present invention, the principle of the present embodiment is the same as that of the first embodiment. The embodiment provides a ballast bed plate damper, which comprises a cavity structure 3 and discrete particles 2; the cavity structure 3 is installed on the upper portion of the ballast bed board 1, and the cavity structure 3 is connected with the ballast bed board 1 through an elastic layer.

The track bed board damper that this embodiment provided constitutes granule damping bump leveller jointly through a large amount of discrete granule and cavity structure to install on the track bed board, granule damping bump leveller has the wide band characteristic, and it can all play the effect of inhaling at 0 ~ 6000 Hz's extremely wide frequency range and inhale, thereby can reduce the vibration of track bed board at full frequency range almost. And the elastic layer is arranged between the cavity structure and the ballast bed plate, so that the vibration absorption function of the ballast bed plate is further improved.

In the description of the present application, the terms "mounted," "connected," "fixed," and the like are used in a broad sense, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; either directly or through an intermediary profile. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "a specific embodiment," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application, and exemplary expressions for the terms above do not necessarily refer to the same embodiment or embodiment in the specification. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

It should be understood by those skilled in the art that although the embodiments of the present invention have been disclosed in the foregoing description, the same is by way of illustration and example only and is not intended to be limiting. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a road bed board attenuator which characterized in that: the ballast bed board damper comprises a cavity structure (3), a filler is arranged in the cavity structure (3), the filler can be arranged in the cavity structure (3) in a flowing mode, the cavity structure (3) is fixed onto the ballast bed board (1) through a connecting piece (5), and an opening capable of being opened or closed is formed in the cavity structure (3).

2. The ballast bed damper of claim 1, wherein: the ballast bed plate is provided with a cavity, and the cavity forms a cavity structure (3).

3. The ballast bed damper of claim 1, wherein: be equipped with the installation department on the railway roadbed board, install cavity structure (3) on the installation department.

4. The ballast bed damper of claim 1, wherein: the cavity structure (3) is fixedly arranged at the edge of the ballast bed plate.

5. A track bed slab damper as claimed in claim 3 or 4, wherein: the cavity structure (3) is tightly attached to the ballast bed plate (1) or the cavity structure (3) is connected with the ballast bed plate through an elastic layer (8).

6. The ballast bed damper of claim 1, wherein: the filler is discrete particles (4).

7. The ballast bed damper of claim 1, wherein: the filler is liquid or a solid-liquid mixture.

8. The ballast bed damper of claim 4, wherein: the cavity structure (3) is arranged to be a corner type, the cavity structure (3) is arranged to be an L-shaped structure, and the cavity structure (3) comprises a first end (6) and a second end (7).

9. The ballast bed damper of claim 8, wherein: the first end (6) of cavity structure (3) is connected with the upper surface of railway roadbed board subsides closely, second end (7) of cavity structure (3) are connected with the lateral wall of railway roadbed board subsides closely.