CN216715069U - Particle damping shock absorber for train - Google Patents

Abstract

The utility model discloses a particle damping vibration absorber for a train, which is arranged on a headwall of the train and comprises: the particle box is provided with at least one group of opposite side walls, the damping particles are filled in the particle box, and the mounting plates are arranged on the at least one group of opposite side walls of the particle box in a staggered mode. The particle damping vibration absorber for the train is compactly arranged by the mounting plates arranged in a staggered manner, the space of the end wall is fully utilized, and the vibration and noise reduction effect of the end wall is improved.

Description

Particle damping shock absorber for train

Technical Field

The utility model relates to the technical field of vibration and noise reduction, in particular to a particle damping vibration absorber for a train.

Background

The car body light weight technology is an important means for reducing operation energy consumption and wheel-rail interaction force, however, excessive pursuit of light weight of the structure often leads to insufficient car body rigidity and reduced car body modal frequency. When the vehicle runs at a high speed and the line condition is poor, the elastic vibration of the vehicle body is intensified, so that the local vibration of the vehicle body is obvious, radiated sound is generated, the riding comfort of the vehicle is greatly influenced, and even the safety problems of structural fatigue and the like are caused. For example, an abnormal vibration of the headwall at 40Hz is a typical structural resonance phenomenon, and the noise caused by the vibration severely deteriorates the sound quality in the vehicle cabin.

For the problem of end wall vibration, two common solutions are provided, namely, rigidity is increased, and structural damping is increased. The rigidity is increased mainly by installing a high-rigidity steel plate at the end wall, but the method has no obvious effect on controlling the vibration of the end wall. When the large-rigidity steel plate is installed, the integral rigidity of the end wall is improved, and meanwhile, the added weight of the whole end wall is large, so that certain influence is generated on the light weight of the structure. The structural damping is increased by adopting a form of brushing a damping coating, and the damping coating has the defects of easy aging, easy corrosion, short service cycle, high cost and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a particle damping shock absorber for a train, which is suitable for damping the shock of the train and has good shock absorption and noise reduction effects.

In order to achieve the purpose, the technical scheme provided by the utility model is as follows:

a particle damping shock absorber for a train mounted on a headwall of the train, comprising: particle box, a plurality of damping particle and a plurality of mounting panel, the particle box be equipped with at least a set of relative lateral wall, a plurality of damping particle fill in the particle box, a plurality of mounting panel dislocation set up on the at least a set of relative lateral wall of particle box.

Furthermore, the particle box comprises a first cavity and a second cavity which are connected into a whole, wherein the first cavity is filled with a plurality of first damping particles, and the second cavity is filled with a plurality of second damping particles.

Further, the specific gravity of the first damping particles is not less than that of the second damping particles.

Further, the surface friction factor of the first damping particles is not less than the surface friction factor of the second damping particles.

Furthermore, the first cavity is close to the door frame of the end wall, and the second cavity is far away from the door frame of the end wall.

Further, the volume of the first damping particles is not less than the volume of the second damping particles.

Furthermore, the middle part of the particle box is provided with a plurality of mounting holes which penetrate through the particle box.

Further, a plurality of the damping particles are coated in the flexible bag.

Furthermore, a plurality of partition boards are arranged in the particle box.

Furthermore, the particle box comprises a bottom plate and a surface cover, and the mounting plate and the bottom plate are connected into a whole.

By adopting the technical scheme, the utility model has the beneficial effects that:

(1) the damping particles and the particle boxes form a coupled and closed highly nonlinear dynamic system, so that kinetic energy generated by vibration of the train end wall is consumed by friction and inelastic collision among the damping particles and between the damping particles and the particle boxes, and the damping and noise reduction effects are obvious.

(2) The particle damping shock absorber for the train is fixed on the end wall of the train through the mounting plates arranged on the opposite side walls of the particle box in a staggered mode, the particle damping shock absorbers for the train and arranged on the end wall can be compactly arranged through the mounting plates arranged in the staggered mode, the space of the end wall is fully utilized, and the shock absorption and noise reduction effects on the end wall are improved.

Drawings

Fig. 1 is a schematic perspective view of a first embodiment.

Fig. 2 is a schematic view of a split structure according to the first embodiment.

Fig. 3 is a schematic view of a split structure in the second embodiment.

Fig. 4 is a schematic perspective view of a third embodiment.

Fig. 5 is a schematic view of a split structure in the third embodiment.

Fig. 6 is a schematic view of the installation of the end wall damper of the third embodiment on the end wall.

Fig. 7 is a schematic view showing a disassembled structure of the particle damping shock absorber for a train according to the fourth embodiment (damping particles are hidden).

Wherein: 1. the damping particle box comprises a particle box body, 11 parts of a first cavity body, 12 parts of a second cavity body, 13 parts of mounting holes, 14 parts of a partition plate, 15 parts of an A side wall, 16 parts of a B side wall, 17 parts of a bottom plate, 18 parts of a face cover, 2 parts of damping particles, 21 parts of first damping particles, 22 parts of second damping particles, 3 parts of a mounting plate, 4 parts of a flexible coating, 5 parts of a partition plate and 6 parts of an end wall.

Detailed Description

The utility model is further described with reference to the following drawings and detailed description.

The utility model discloses a particle damping shock absorber for a train, which is arranged on a headwall 6 of the train, and comprises a particle box 1, a plurality of damping particles 2 and a plurality of mounting plates 3, wherein the particle box 1 is provided with at least one group of opposite side walls, the particle box 1 is filled with the plurality of damping particles 2, and the mounting plates 3 are arranged on at least one group of opposite side walls of the particle box 1 in a staggered manner.

The damping particle 2 and the particle box 1 form a coupled and closed highly nonlinear dynamic system, the kinetic energy generated by the vibration of the end wall 6 is consumed by the friction and inelastic collision between the damping particles 2 and the particle box 1, and the damping particle box has the advantages of obvious damping and noise reduction effects, wide damping frequency domain, no increase of linear displacement, omnidirectionality and the like. Through the mounting plates 3 arranged on the opposite side walls of the particle box 1 in a staggered manner, a plurality of particle damping shock absorbers for the train, which are disclosed by the utility model, arranged on the end wall 6 can be compactly arranged, the space of the end wall 6 is fully utilized, and the shock absorption and noise reduction effects on the end wall 6 are improved.

Example one

As shown in fig. 1 and fig. 2, in the present embodiment, the particle box 1 has a cavity, the damping particles 2 are filled in the cavity, the particle box 1 has a set of opposite sidewalls, which are an a sidewall 15 and a B sidewall 16, respectively, a mounting plate 3 is fixed on the a sidewall 15 and the B sidewall 16, respectively, and the mounting plate 3 mounted on the a sidewall 15 and the mounting plate 3 mounted on the B sidewall 16 are staggered with each other. It can be understood that the mounting plates 3 are arranged on two, three or even more groups of opposite side walls in a staggered manner under the condition that the particle box 1 has a plurality of groups of opposite side walls according to parameters such as the size, the shape and the like of the particle box 1, so as to ensure that the particle damping shock absorbers for trains are stably mounted on the end wall 6.

In this embodiment, the particle cassette 1 includes a bottom plate 17 and a surface cover 18, the bottom plate 17 and the mounting plate 3 are integrally connected, and the bottom plate 17 and the surface cover 18 are reliably connected by welding or the like.

Damping particles are filled into the flexible bag 4 and then are filled into the particle box 1, so that the damping particles are coated in the flexible material 4, and the damping particles 2 are not in direct contact with the particle box 1, thereby improving the vibration damping performance of the particle damping vibration absorber for the train and reducing the sound radiation of the end wall 6.

Example two

As shown in fig. 3, the present embodiment is different from the first embodiment in that a plurality of partition plates 14 are arranged in the particle box 1, the arrangement of the partition plates 14 increases the contact area between the damping particles 2 and the particle box 1, increases the friction and inelastic collision between the damping particles 2 and the particle box 1, and further enhances the vibration and noise reduction effect of the particle damping vibration absorber for a train.

EXAMPLE III

As shown in fig. 4 to 6, in this embodiment, the particle box 1 includes a first cavity 11 and a second cavity 12 connected together, the first cavity 11 is filled with a plurality of first damping particles 21, the second cavity 12 is filled with a plurality of second damping particles 22, the particle damping vibration absorber for a train is installed around a door frame of the end wall 6, the first cavity 11 is close to the door frame of the end wall 6, and the second cavity 12 is far away from the door frame of the end wall 6. The distance between two adjacent particle damping shock absorbers for the train is the width of the mounting plate 3, the distance between the particle damping shock absorbers for the train is reduced as much as possible, and the vibration part of the end wall 6 is covered as much as possible, so that the space of the end wall 6 is fully utilized, and effective vibration reduction and noise reduction are realized.

Since the closer to the door frame of the headwall 6, the more severe the vibration is, and the damping particles with different specific gravities are filled under the same vibration intensity, the different damping effects are also different, so in order to enhance the damping effect of the particle damping vibration absorber for trains, in the present embodiment, the specific gravity of the first damping particles 21 is greater than or equal to the specific gravity (specific gravity refers to relative density) of the second damping particles 22, the surface friction factor of the first damping particles 21 is not less than the surface friction factor of the second damping particles 22, and the volume of the first damping particles is not less than the volume of the second damping particles.

In this embodiment, the particle box 1 is a cuboid, and because the particle box 1 is longer in size, two mounting plates 3 are all installed on two long sides of the particle box 1, namely the mounting plates 3 on two sides of the first cavity 11 and the mounting plates 3 on two sides of the second cavity 12, so as to prevent the independent vibration of the partial parts of the particle box 1 relative to the end wall 6 and influence the vibration reduction and noise reduction effects.

The particle box 1 is made of aluminum alloy, and has the advantages of light self weight, high strength, corrosion resistance, small deformation, strong fire resistance, excellent weather resistance and long service life.

Example four

As shown in fig. 7, the difference between the present embodiment and the fourth embodiment is that, in the present embodiment, two mounting holes 13 penetrating through the particle box 1 are formed in the middle of the particle box 1, the particle damping vibration absorber for a train is fixed on the end wall 6 through screws, the mounting holes 13 and the mounting plate 3, the problem of middle arching of the particle damping vibration absorber for a train can be solved through the mounting holes 13, when the particle box 1 is shaped as a rectangular parallelepiped, whether the mounting plate 3 is installed on the long side or the short side of the particle box 1 does not affect the solution of the middle arching problem of the particle damping vibration absorber for a train, and meanwhile, the installation holes 13 also have the functions of fastening the bottom plate and the face cover.

While the utility model has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims (10)

1. A particle damping shock absorber for a train, which is installed on a headwall of the train, comprising:

a particle cassette provided with at least one set of opposing sidewalls;

a plurality of damping particles filled in the particle box;

the mounting plates are arranged on at least one group of opposite side walls of the particle box in a staggered mode.

2. The particle damping shock absorber for trains as recited in claim 1, wherein said particle box comprises a first cavity and a second cavity connected together, said first cavity is filled with a plurality of first damping particles, and said second cavity is filled with a plurality of second damping particles.

3. The particle damped shock absorber of claim 2 wherein said first damping particles have a specific gravity not less than a specific gravity of said second damping particles.

4. The particle damping shock absorber for a train as set forth in claim 3, wherein the surface friction factor of the first damping particles is not less than the surface friction factor of the second damping particles.

5. The particle damped shock absorber according to claim 4 wherein said first chamber is located proximate a door frame of a headwall and said second chamber is located distal from said door frame of said headwall.

6. The particle damped shock absorber of claim 5 wherein said first damping particles have a volume not less than a volume of said second damping particles.

7. The particle damping absorber as claimed in any one of claims 1 to 6, wherein the particle box has a plurality of mounting holes formed in the middle thereof and penetrating the particle box.

8. The particle damped shock absorber according to claim 1 wherein a plurality of said damping particles are encased in a flexible bag.

9. The particle damping shock absorber for trains as set forth in claim 1, wherein a plurality of partition plates are provided in said particle box.

10. The particle damping shock absorber for trains as set forth in claim 1, wherein said particle box comprises a bottom plate and a cover, said mounting plate being integrally connected to said bottom plate.

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