Unlock instant, AI-driven research and patent intelligence for your innovation.

Vibration reduction method and vibration reduction sleeper based on particle damping

A technology of particle damping and particle damper, which is applied in the field of rail transit, can solve problems such as potential safety hazards and sleeper vibration, and achieve the effects of improving damping, buffering impact force, and reducing noise

Active Publication Date: 2021-07-13
国环(厦门)检测研究院有限公司
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For this reason, it is necessary to provide a vibration reduction method based on particle damping and a vibration-damping sleeper to solve the problem that the vibration of the existing sleeper is likely to bring safety hazards

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Vibration reduction method and vibration reduction sleeper based on particle damping
  • Vibration reduction method and vibration reduction sleeper based on particle damping
  • Vibration reduction method and vibration reduction sleeper based on particle damping

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Such as figure 1 , a vibration reduction method based on particle damping, which is applied to a sleeper running on a train, wherein rail bearing grooves are arranged on both sides of the upper surface of the sleeper, rails are arranged in the rail bearing grooves, and the train runs along the rails;

[0047] The damping method includes the following steps:

[0048] (S1) When the train is running, the impact vibration of the train and the rail is the vibration source, and the vibration source passes through the rail to the sleeper, and then spreads to the surrounding environment through the ballast bed as the transmission path;

[0049] (S2) Installing the particle damper in the sleeper based on the transfer path, the particle damper is located on the transfer path;

[0050] (S3) establishing a discretization model of the total energy dissipated by the particles in the particle damper;

[0051] Wherein, the discretization model is as formula 1:

[0052]

[0053] A...

Embodiment 2

[0072] Such as Figure 2-3 As shown, a vibration-damping sleeper based on particle damping includes a sleeper body 1, and rail bearing grooves 3 are provided on both sides of the upper surface of the sleeper body 1, and a steel rail 2 is arranged in the rail bearing groove 3. The sleeper body 1 has a cavity 4 inside, the cavity 4 is a damper, and the cavity 4 is filled with damping particles 5. The sleeper body 1 is arranged on the ballast bed. When the rail 2 is vibrated, the vibration transmission path is Transmission to both sides of the rail groove 3 , so the damper in this embodiment, that is, the cavity 4 is arranged on both sides of the rail groove 3 .

[0073] The damping particles 5 are iron-based alloy particles with a particle size of 2 mm and a filling rate of 80%, which is determined by the method in Example 1.

[0074] The surface friction factor of the damping particles is 0.01-0.99, the surface restitution coefficient of the damping particles is 0.01-4, and th...

Embodiment 3

[0080] Such as Figure 4-5 As shown, a vibration-damping sleeper based on particle damping includes a sleeper body 1, and rail bearing grooves 3 are provided on both sides of the upper surface of the sleeper body 1, and a steel rail 2 is arranged in the rail bearing groove 3. The sleeper body 1 has a cavity 4 inside, the cavity 4 is a damper, the cavity 4 is filled with damping particles 5, and the sleeper body 1 is arranged on the ballast bed. In this embodiment, the cavity 4 is a cylinder.

[0081] The damping particles 5 are iron-based alloy particles with a diameter of 2 mm and a filling rate of 80%.

[0082] The rail support groove 3 corresponds to two groups of cavities 4, each group has two cavities 4, the two groups of cavities 4 are symmetrically arranged on both sides of the central axis of the rail support groove 3, and the central axes of the two groups of cavities 4 are parallel to the horizontal plane.

[0083] In this embodiment, the central axis of the cavity...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the field of rail transit, in particular to a vibration reduction method and a vibration reduction sleeper based on particle damping, and the vibration reduction method comprises the following steps: S1, taking impact vibration of a train and a steel rail as a vibration source when the train runs, and taking a path that the vibration source is transmitted to the periphery of the sleeper through the steel rail and then spread to the surrounding environment through a ballast bed as a transmission path; S2, based on the transmission path, installing the particle damper in the sleeper, and the particle damper is located on the transmission path; S3, establishing a discretization model of total particle dissipation energy in the particle damper; and S4, based on the discretization model, determining the target particle size, the target particle filling rate and the target particle material corresponding to the maximum value of the total particle dissipation energy, the discretization model of the total particle dissipation energy is established in the method, and the maximum value of the total particle dissipation energy can be determined based on the discretization model; therefore, a damping vibration attenuation scheme of the vibration attenuation sleeper is quickly established.

Description

technical field [0001] The invention relates to the field of rail transportation, in particular to a vibration reduction method based on particle damping and a vibration reduction sleeper. Background technique [0002] Sleeper is an important railway equipment with a huge output. With the continuous development of my country's railway construction and the needs of high-speed and heavy-duty railways, the performance requirements of sleepers are becoming more and more stringent. During long-term use, due to the dynamic load of the train, the sleeper will be cracked, broken, crushed, etc., which will affect the stability and smoothness of the sleeper; the vibration caused by the dynamic load of the train will be transmitted to the surroundings, resulting in vibration of the rail Even resonance damage occurs, which not only affects the service life of the equipment, brings safety hazards, but also affects people's pursuit of comfort in the living environment. Contents of the i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): E01B1/00E01B19/00
CPCE01B1/00E01B19/00
Inventor 肖望强陈辉
Owner 国环(厦门)检测研究院有限公司