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CN-121976433-A - Vibration-damping noise-reducing device for rail of rail transit

CN121976433ACN 121976433 ACN121976433 ACN 121976433ACN-121976433-A

Abstract

The invention relates to the technical field of rail transit, in particular to a vibration and noise reduction device for a rail transit steel rail, which comprises a steel rail section, wherein the left side and the right side of the steel rail section are fixedly connected with vibration reduction mechanisms, the tops of the two vibration reduction mechanisms are movably connected with noise reduction mechanisms; parts such as rubber clamp plate and second spring in the mechanism of making an uproar fall, through deformation and elasticity recovery of self when the vehicle passes, initially cushioned vehicle pressure and reduced the noise, simultaneously, the linkage design between each part makes the stability of whole device obtain very big promotion.

Inventors

  • ZHANG XU
  • HE ZHENXING
  • YUAN JIANFENG
  • BAI YANBO
  • LI BINQIANG
  • Cao Ziyong

Assignees

  • 兰州交通大学

Dates

Publication Date
20260505
Application Date
20260402

Claims (10)

  1. 1. The vibration and noise reduction device for the rail transit comprises a rail section (1) and is characterized in that the left side and the right side of the rail section (1) are fixedly connected with vibration reduction mechanisms (2), and the tops of the two vibration reduction mechanisms (2) are movably connected with noise reduction mechanisms (3); the two damping mechanisms (2) comprise damping group frames (21), the inner walls of the damping group frames (21) are connected with stabilizing assemblies (23) in a sliding mode, and pulling assemblies (22) are arranged on the left side and the right side of the front side and the rear side of each damping group frame (21).
  2. 2. The vibration and noise reduction device for the rail transit steel rail is characterized in that the two vibration reduction groups (21) comprise bottom plates (211), T-shaped side plates (212) are fixedly connected to the middle parts of the outer sides of the two bottom plates (211), vertical connecting blocks (213) are fixedly connected to four sides of the middle parts of the tops of the two bottom plates (211), vertical guide plates (214) are fixedly connected to the middle parts of the tops of the bottom plates (211), and sliding grooves (219) are formed in the middle parts of the two vertical guide plates (214).
  3. 3. The vibration and noise reduction device for the rail transit steel rail is characterized in that the tops of the left two groups of vertical connecting blocks (213) and the right vertical connecting blocks (213) are fixedly connected with transverse L-shaped hinging blocks (215), the outsides of the left two groups of transverse L-shaped hinging blocks (215) and the right two groups of transverse L-shaped hinging blocks (215) are fixedly connected with spring connecting blocks (216), and the tops of the left two groups of transverse L-shaped hinging blocks (215) and the right two groups of transverse L-shaped hinging blocks (215) are fixedly connected with top side plate connecting vertical plates (2110).
  4. 4. The vibration and noise reduction device for the rail transit steel rail according to claim 3, wherein the tops of the left side top side plate connecting vertical plates (2110) and the right side top side plate connecting vertical plates (2110) are fixedly connected with guide top side plates (217), and the front side and the rear side of the inner side of the two T-shaped side plates (212) are slidably connected with inverted L-shaped folding and expanding fixing rods (218).
  5. 5. The vibration and noise reduction device for the rail transit steel rail is characterized in that a plurality of groups of pulling assemblies (22) comprise arc-shaped rotating arms (221), the middle parts of the outer walls of the left two groups of arc-shaped rotating arms (221) and the right two groups of arc-shaped rotating arms (221) are rotatably connected to the inner sides of the left two groups of transverse L-shaped hinging blocks (215) and the right two groups of transverse L-shaped hinging blocks (215), the tops of the left two groups of arc-shaped rotating arms (221) and the right two groups of arc-shaped rotating arms (221) are rotatably connected with H-shaped bidirectional hinging blocks (222), and the bottoms of the left two groups of arc-shaped rotating arms (221) and the right two groups of arc-shaped rotating arms (221) are rotatably connected with Y-shaped pull rods (223).
  6. 6. The vibration and noise reduction device for the rail transit steel rail is characterized in that the two stabilizing assemblies (23) comprise two L-shaped blocks (231), the outer sides of the two groups of L-shaped blocks (231) are fixedly connected with lifting side connecting rods (235), the bottoms of the two groups of L-shaped blocks (231) are fixedly connected with sliding blocks (232), the outer walls of the two sliding blocks (232) are slidably connected with the inner walls of sliding grooves (219) formed in the two vertical guide plates (214), springs (234) are fixedly connected with the two sides of the bottoms of the two sliding blocks (232), and the bottoms of the two groups of springs (234) are fixedly connected with the bottoms of the inner walls of the sliding grooves (219) formed in the two vertical guide plates (214).
  7. 7. The vibration and noise reduction device for rail transit steel rails according to claim 6, wherein the front and rear sides of the left and right sides of the two sliders (232) are rotatably connected with arc-shaped rotating pull rods (233), and the inner sides of the left and right two groups of arc-shaped rotating pull rods (233) and (233) are rotatably connected to the outer sides of the left and right two groups of arc-shaped rotating arms (221) and (221) at the side far from the sliders (232).
  8. 8. The vibration and noise reduction device for the rail transit steel rail according to claim 6, wherein the front side and the rear side of the bottoms of the left and the right groups of lifting side connecting rods (235) are fixedly connected with a stable side plate pressing plate (236), and the outer sides of the left and the right groups of stable side plate pressing plates (236) are fixedly connected with a positioning pressing plate (237).
  9. 9. The vibration and noise reduction device for the rail transit steel rail is characterized in that the two noise reduction mechanisms (3) comprise rubber pressing plates (31), two sides of the middle parts of the bottoms of the two rubber pressing plates (31) are respectively and rotatably connected with a rotary short rod (32), the bottoms of the left and right groups of rotary short rods (32) are respectively and rotatably connected with an L-shaped receiving and expanding transverse plate (33), the outer walls of the left and right groups of L-shaped receiving and expanding transverse plates (33) are respectively and slidably connected to the inner sides of the left and right groups of guide top side plates (217), the inner sides of the left and right groups of L-shaped receiving and expanding transverse plates (33) are respectively and fixedly connected with a second spring (34), the outer sides of the left and right groups of L-shaped receiving and expanding transverse plates (33) are respectively and fixedly connected with an arc-shaped receiving and expanding transverse plate (35), and the outer sides of the left and right groups of the arc-shaped receiving and expanding transverse plates (35) are respectively and fixedly connected to one side of the inner sides of the left and right groups of inverted L-shaped receiving and expanding fixing rods (218), which are mutually far away.
  10. 10. The vibration and noise reduction device for rail transit steel rails according to claim 9, wherein the left and right sides of the left and right groups of L-shaped receiving and expanding transverse plates (33) are respectively and rotatably connected with L-shaped switching side blocks (36), the outer sides of the left and right groups of L-shaped switching side blocks (36) are respectively and fixedly connected with second spring connecting blocks (37), the bottoms of the inner sides of the left and right groups of L-shaped switching side blocks (36) are respectively and rotatably connected with the tops of the left and right groups of Y-shaped pull rods (223), the tops of the outer sides of the left and right groups of L-shaped switching side blocks (36) are respectively and rotatably connected with one side, far away from the arc-shaped rotating arm (221), of the left and right groups of H-shaped bidirectional hinging blocks (222), the bottoms of the plurality of groups of second springs (37) are respectively and fixedly connected with third springs (38), and the bottoms of the plurality of groups of springs (216) are respectively and fixedly connected with the tops of the plurality of connecting blocks (216).

Description

Vibration-damping noise-reducing device for rail of rail transit Technical Field The invention relates to the technical field of rail transit, in particular to a vibration and noise reduction device for a rail of the rail transit. Background The rail transit is a public transit or a transportation system which needs to run on a specific rail, has the remarkable advantages of large transportation capacity, high speed, safety, reliability, high standard point rate and the like, and common rail transit has subways, light rails, tramcars, maglev trains and the like, plays a vital role in urban transit, can effectively relieve ground traffic jams, reduce automobile exhaust emission and improve urban environment quality, meanwhile, the development of the rail transit also drives the prosperity along the line economy, promotes the cooperative development of reasonable layout and areas of the city, and in the rail transit system, the steel rail is one of key components, directly bears the load of the train and guides the running direction of the train, however, vibration and noise can be generated on the steel rail when the train runs, and can influence riding comfort of passengers and possibly cause interference on living environments of surrounding residents. According to the patent document CN120231256A, the disclosed vibration damping and noise reduction device for the rail transit rail comprises damping modules with damping and vibration reduction functions, and resonance modules and clamps with vibration absorption functions, and is characterized in that the damping modules are symmetrically attached to two sides of the rail and extend from a rail web to a rail bottom, the clamps are fixed on the damping modules and stretch across the rail bottom to clamp the damping modules on the rail, the resonance modules are longitudinally arranged along the rail and are detachably arranged on the damping modules, and the clamps and the resonance modules are respectively in longitudinal positioning fit with the damping modules. The invention improves the positioning reliability of the damping module on the steel rail, improves the reliability of vibration reduction and noise reduction, effectively prevents the resonance module from loosening and shifting, and forms targeted vibration suppression according to the line vibration working condition of the steel rail so as to realize directional main frequency suppression, solve the high energy caused by specific excitation frequency, improve the energy consumption and reduce the vibration of the steel rail. The invention also provides a vibration and noise reduction method for the rail transit steel rail. The conventional steel rail damping technology is usually realized by directly installing simple components such as a rubber backing plate or a damping block and the like below or around a steel rail, the rubber backing plate mainly depends on the high elasticity characteristic of the rubber backing plate to absorb and buffer vibration and impact generated in the high-speed running process of a train, however, the effect of the damping mode is difficult to last, because the rubber material is easy to age, harden and even deform under the condition of being exposed to natural environment for a long time and continuously bearing dynamic load, so that the original damping performance of the rubber material is obviously reduced, on the other hand, the conventional damping block can consume part of vibration energy through internal friction or deformation, but because the structural design of the conventional damping block is relatively fixed, the installation mode is relatively single, lacks enough flexibility and adaptability, is difficult to carry out targeted optimal adjustment according to specific vibration working conditions of different railway lines, and therefore, the damping effect of the conventional damping block is often limited in a complex and changeable actual running environment. Disclosure of Invention In order to overcome the defects of the prior art, the invention provides the vibration damping and noise reducing device for the rail transit, and the technical problem to be solved by the invention is that the rubber material is easy to age, harden and even deform under the conditions of long-term exposure to natural environment and continuous bearing of dynamic load, so that the original damping performance of the rubber material is obviously reduced, and on the other hand, the conventional damping block can consume part of vibration energy through internal friction or deformation, but because the structural design is relatively fixed, the installation mode is relatively single, and the installation mode lacks enough flexibility and adaptability, is difficult to carry out targeted optimal adjustment according to specific vibration working conditions of different railway lines, and therefore, the damping effect is often limited in complex and changeable actual