CN221701961U - A turnout vibration damper - Google Patents

Abstract

The utility model discloses a turnout damper, which belongs to the technical field of rail transit vibration noise reduction devices and comprises: the vibration damper comprises a vibration damper, an upper rubber backing plate, a lower rubber backing plate, an iron plate, a vibration damping rubber backing plate and an iron backing plate; the shock absorber includes: the top plate, the bottom plate and the rubber ring; the rubber ring is inlaid between the top plate and the bottom plate, the upper rubber backing plate is arranged on the top plate, the lower rubber backing plate is arranged at the bottom of the bottom plate, the iron plate is arranged at the bottom of the lower rubber backing plate, the vibration reduction rubber backing plate is arranged at the bottom of the iron plate, and the iron backing plate is arranged on the upper rubber backing plate. The utility model has the advantages that the upper part is in a shear type rubber layer structure, the lower part is in a compression type rubber layer structure and forms friction contact with the concrete switch tie, so that the vertical vibration damping effect can be improved, the double-layer vibration damping function can be realized, the low vertical rigidity effect can be realized, and the high-order nonlinear vibration damping can be realized.

Description

A turnout vibration damper

Technical Field

The utility model belongs to the technical field of rail transit vibration noise reduction devices, and more specifically relates to a turnout vibration damper.

Background Art

my country will promote the development of central cities and surrounding cities (towns) as a direction, take rail transit construction as a guide, and create a high-quality living circle. Urban rail transit construction is dominated by technological innovation and equipment innovation, fully considers industry development and green and low-carbon development, strengthens urban rail transit construction, ecological environment protection, pollution prevention, and improves passenger service convenience, comfort and other travel needs.

The vibration and noise problems of urban rail transit are undoubtedly the key points to be rectified in the process of green and low-carbon development. Turnouts, as an important part of the urban rail transit rail line, are also the weak link of the line. They usually cause large vibrations and wheel-rail noise, thus causing noise pollution. Therefore, it is particularly important to take necessary vibration and noise reduction measures in the turnout area.

At present, the traditional vulcanized integrated vibration-damping fasteners used in the turnout section of urban rail transit in my country use rubber shear deformation to achieve vibration reduction, and are mainly used in subway lines. However, its disadvantage is that it is difficult to achieve low stiffness requirements due to the large length of the turnout product. The prior art Chinese patent (CN219824751U) discloses a subway turnout vibration damper, which records that a rubber vibration damping ring is set between the upper iron piece and the lower iron piece to achieve the vibration reduction effect. Its lateral stiffness is mainly provided by the lateral compression deformation of the rubber layer. The vibration reduction means are single, the vibration reduction effect is general, and a double-layer vibration reduction structure cannot be formed.

Therefore, how to provide a turnout damper is a problem that those skilled in the art need to solve urgently.

Utility Model Content

In view of this, the utility model provides a turnout vibration damper, which has a shear rubber layer structure on the upper part and a compression rubber layer structure on the lower part, and forms friction contact with the concrete switch sleeper, which can enhance the vertical vibration damping effect, realize the double-layer vibration damping function, achieve the low vertical stiffness effect, and realize the advantages of high nonlinear vibration damping.

In order to achieve the above purpose, the utility model adopts the following technical solutions:

A turnout vibration damper comprises: a vibration damper, an upper rubber pad, a lower rubber pad, an iron plate, a vibration damping rubber pad and an iron pad; the vibration damper comprises: a top plate, a bottom plate and a rubber ring; the rubber ring is embedded between the top plate and the bottom plate, the upper rubber pad is arranged on the top plate, the lower rubber pad is arranged on the bottom of the bottom plate, the iron plate is arranged on the bottom of the lower rubber pad, the vibration damping rubber pad is arranged on the bottom of the iron plate, and the iron pad is arranged on the upper rubber pad.

Furthermore, the bottom of the vibration-damping rubber pad is placed on the sleeper.

Furthermore, a waist-shaped hole is provided on the bottom plate, and serrations are provided on the bottom plate around the waist-shaped hole. Mounting holes are provided on the lower rubber pad, iron plate, vibration-damping rubber pad and sleeper, and their positions correspond to the waist-shaped hole. The waist-shaped hole and the mounting holes are used to install the switch sleeper connecting bolts, and a serrated gasket is provided on the sliding sleeve of the switch sleeper connecting bolt.

Furthermore, the top plate, the upper rubber pad and the iron pad are all provided with threaded through holes, and the threaded through holes are used to install the iron pad connecting bolts.

The beneficial effects of the utility model are:

1. It realizes the firm anchoring between the shock absorber and the turnout iron pad while taking into account the vibration reduction effect of the shock absorber, which can be applied to the operation conditions of urban rail with a speed of more than 160km/h.

2. The combined use of rubber compression and shear deformation can improve the vertical vibration reduction effect by 1-3dB.

3. This shock absorber has lower vertical stiffness performance.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

FIG1 is a schematic structural diagram of the utility model.

FIG. 2 is a schematic structural diagram of the shock absorber of the utility model.

FIG. 3 is a schematic structural diagram of a threaded through hole of the utility model.

FIG. 4 is a schematic diagram of the structure of the waist-shaped hole of the utility model.

FIG. 5 is a schematic structural diagram of the vibration-damping rubber pad of the present invention.

Among them, in the figure:

1- shock absorber; 1.1- top plate; 1.1.1- threaded through hole; 1.2- bottom plate; 1.2.1- waist hole; 1.2.2- serration; 1.3- rubber ring; 2- upper rubber pad; 3- switch sleeper connecting bolt; 4- serration gasket; 5- lower rubber pad; 6- iron plate; 7- vibration damping rubber pad; 8- sleeper; 9- iron pad connecting bolt; 10- iron pad.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Please refer to Figures 1-5. The utility model provides a turnout vibration damper, including: a vibration damper 1, an upper rubber pad 2, a lower rubber pad 5, an iron plate 6, a vibration damping rubber pad 7 and an iron pad 10; the vibration damper 1 includes: a top plate 1.1, a bottom plate 1.2 and a rubber ring 1.3; the rubber ring 1.3 is embedded between the top plate 1.1 and the bottom plate 1.2, the upper rubber pad 2 is placed on the top plate 1.1, the lower rubber pad 5 is placed on the bottom of the bottom plate 1.2, the iron plate 6 is placed on the bottom of the lower rubber pad 5, the vibration damping rubber pad 7 is placed on the bottom of the iron plate 6, and the iron pad 10 is placed on the upper rubber pad 2. The bottom plate 1.2 can be vulcanized into one with the vibration damping rubber pad 7, or can be used separately, so as to achieve a double-layer high vibration damping effect. The vibration-damping rubber pad 7 may also be provided with a groove structure to achieve the vertical stiffness requirement. The vibration-damping rubber pad 7 may also be made of other polymer materials, such as foamed polyurethane.

The bottom of the vibration-damping rubber pad 7 is placed on the sleeper 8. The upper rubber pad 2 and the lower rubber pad 5 can effectively fill the gap between the top plate 1.1 and the iron pad 10 and the bottom plate 1.2 and the iron plate 6, avoiding the adverse effects caused by uneven contact between the two during use and playing a certain buffering role.

The bottom plate 1.2 is provided with a waist-shaped hole 1.2.1, and the bottom plate 1.2 around the waist-shaped hole 1.2.1 is provided with serrations 1.2.2. The lower rubber pad 5, the iron plate 6, the vibration-damping rubber pad 7 and the sleeper 8 are provided with mounting holes, and the positions correspond to the waist-shaped hole 1.2.1. The waist-shaped hole 1.2.1 and the mounting hole are used to install the switch sleeper connecting bolt 3, and the switch sleeper connecting bolt 3 is provided with a serration gasket 4 on the sliding sleeve. The number of waist-shaped holes 1.2.1 is preferably four, and the spacing of the serrations 1.2.2 can be set to 4mm or 6mm. The serration gasket 4 cooperates with the serrations 1.2.2 to better constrain the lateral displacement of the shock absorber of the utility model. The shock absorber 1 is connected to the sleeper 8 through the four waist-shaped mounting holes 1.2.1 on the bottom plate 1.2, ensuring that the stiffness characteristics of the shock absorber 1 and the rubber ring 1.3 are not affected by the preload. The mounting hole can also be designed as a waist-shaped hole to achieve the installation distance adjustment function.

The top plate 1.1, the upper rubber pad 2 and the iron pad 10 are all provided with threaded through holes 1.1.1, and the threaded through holes 1.1.1 are used to install the iron pad connecting bolts 9. There are a plurality of threaded through holes 1.1.1.

The distances between the multiple threaded through holes 1.1.1 on the top plate 1.1 are designed to be compatible, so that the models of different switch sleeper positions can be used universally; according to the load-bearing and vibration reduction requirements of the turnout shock absorber, the thickness, angle and height of the rubber ring 1.3 are designed for the shock absorber 1; for the iron plate 6 and the vibration reduction rubber pad 7, structures such as bosses can be designed on the upper and lower surfaces of the vibration reduction rubber pad 7 to obtain the vertical stiffness of the vibration reduction rubber pad 7, and the bosses can be set to a nonlinear structure; thereby obtaining a low vertical stiffness and high vibration reduction turnout shock absorber, that is, achieving a high vibration reduction function.

The existing turnout vibration damper is suitable for the turnout area, and its length is relatively large. Even if a shear-type rubber structure is used, its stiffness is difficult to reach below 9kN/mm, so it cannot achieve a high vibration reduction effect. The upper part of the utility model is the same as the traditional turnout sleeper vibration damper, and the lower part adopts a split or vulcanized integrated structure, which can realize a double-layer vibration reduction function and achieve a low vertical stiffness effect. Through the setting of a special structure, a double-layer nonlinear vibration reduction effect can also be achieved.

As a result, the utility model has a shear-type rubber layer structure on the upper part and a compression-type rubber layer structure on the lower part, and forms friction contact with the concrete switch sleeper, which can enhance the vertical vibration reduction effect, realize the double-layer vibration reduction function, achieve the effect of low vertical stiffness, and realize the advantages of high nonlinear vibration reduction.

In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims (4)

1. A switch damper, comprising: the vibration absorber comprises a vibration absorber (1), an upper rubber backing plate (2), a lower rubber backing plate (5), an iron plate (6), a vibration absorbing rubber backing plate (7) and an iron backing plate (10); the shock absorber (1) includes: a top plate (1.1), a bottom plate (1.2) and a rubber ring (1.3); the rubber ring (1.3) is inlaid between the top plate (1.1) and the bottom plate (1.2), the upper rubber base plate (2) is arranged on the top plate (1.1), the lower rubber base plate (5) is arranged at the bottom of the bottom plate (1.2), the iron plate (6) is arranged at the bottom of the lower rubber base plate (5), the vibration reduction rubber base plate (7) is arranged at the bottom of the iron plate (6), and the iron base plate (10) is arranged on the upper rubber base plate (2).

2. A switch damper according to claim 1, characterized in that the bottom of the damping rubber pad (7) is placed on the sleeper (8).

3. The turnout damper according to claim 2, wherein a waist-shaped hole (1.2.1) is formed in the bottom plate (1.2), saw teeth (1.2.2) are formed in the bottom plate (1.2) around the waist-shaped hole (1.2.1), mounting holes are formed in the lower rubber pad (5), the iron plate (6), the damping rubber pad (7) and the sleeper (8), the positions of the mounting holes correspond to the waist-shaped hole (1.2.1), the waist-shaped hole (1.2.1) and the mounting holes are used for mounting a turnout sleeper connecting bolt (3), and saw tooth gaskets (4) are sleeved on the turnout sleeper connecting bolt (3) in a sliding mode.

4. A switch damper according to claim 1, characterized in that the top plate (1.1), the upper rubber pad (2) and the iron pad (10) are provided with threaded through holes (1.1.1), and the threaded through holes (1.1.1) are used for installing the iron pad coupling bolts (9).