CN203238500U - Anti-disengaging damping pad layer of ballastless track - Google Patents

Abstract

The utility model discloses a ballastless track anti-vacation vibration damping cushion, the upper surface and the lower surface of the cushion body (1), the upper surface, the lower surface and the groove (9) of the bottom of the groove (9) Both the outer surface and the inner surface of the side wall are provided with protrusions (6); the stiffness of the cushion body (1) in the longitudinal front part (1a) and rear part (1c) is less than that of the middle part (1b); the cushion body (1) (1) The surrounding cross-section is interdigitated (5) with the gap facing inward. This kind of damping cushion can effectively buffer the impact of the train load on the cushion, avoid the partial void between the track bed plate and the base plate, damage the elastic damping cushion, and better ensure the driving safety of high-speed trains; and the elastic damping cushion The service life is long, and the performance of vibration and noise reduction is strong; at the same time, the amount of rubber is saved, and the production cost is low. It is especially suitable for use on double-block ballastless tracks on slab truss bridges with uneven stiffness and on lines with poor subgrade conditions.

Description

Ballastless track anti-vacation vibration damping cushion

technical field

The utility model relates to an elastic damping cushion layer for a double-block ballastless track of a high-speed railway passenger dedicated line.

Background technique

my country is building a large-scale rapid passenger dedicated railway network, and the construction of high-speed railways has become an inevitable trend and a practical need for the development of my country's railway system. In order to meet the safety of passenger train operation and the comfort of passengers, the railway line must have the performance of continuous, smooth, stable, durable and less maintenance, so the track structure must have high smoothness and high stability. Ballastless track has technical characteristics such as good structural stability, stability, durability, less maintenance, and economy, so it has been widely used in foreign high-speed railways.

An elastic damping cushion is installed between the ballastless track bed slab and the base plate. Its main functions are filling adjustment, force bearing and force transmission, vibration reduction and noise reduction, and comprehensive and uniform support of the track bed slab. It can withstand the vertical force and horizontal force transmitted from the track bed plate and transmit it to the base plate and the limit device to disperse the load of the train. The double-block ballastless rail elastic damping cushion has grooves that match the grooves of the base plate and the protrusions at the bottom of the ballast bed plate, so that the combination of the three is better.

The elastic damping cushion between the existing double-block ballastless track bed plate and the base plate has the following problems: 1. The stiffness of each part of the entire cushion is uniform. However, when the train load just acts on the cushion and leaves the cushion, the impact on the cushion is the strongest, especially on plate-truss bridges with uneven stiffness and line sections with poor subgrade conditions, the stiffness of the front and rear sections of the cushion High, insufficient elasticity, can not effectively buffer the impact of the train load on the cushion, easily lead to partial separation between the ballast bed plate and the base plate, damage to the elastic damping cushion, and affect the life of the track structure and the safety of high-speed trains. 2. There is no sealing design and treatment on the surroundings of the elastic damping cushion, the base plate and the road bed plate. Rainwater, mud, etc. are easy to infiltrate and affect the service life of the rubber. 3. The elastic damping cushion has a smooth surface, and the lateral deformation is limited under load, which is not conducive to vibration and noise reduction; at the same time, it does not save raw materials.

Utility model content

The purpose of the utility model is to overcome the deficiency of the elastic damping cushion for the existing double-block ballastless track, and provide an anti-vacation damping cushion for the ballastless track, which can effectively buffer the impact of the train load. The impact of the cushion layer can avoid the partial void between the track bed plate and the base plate, and damage the elastic damping cushion layer, which can better ensure the safety of high-speed trains; and the elastic vibration damping cushion layer has a long service life and strong vibration and noise reduction performance; At the same time, the consumption of rubber is saved, and the production cost is low. It is especially suitable for use on double-block ballastless tracks on slab truss bridges with uneven stiffness and on lines with poor subgrade conditions.

The utility model achieves the purpose of the invention, and the technical solution adopted is: a ballastless track anti-vacation vibration damping cushion, installed between the track bed plate and the base plate, including a cushion body matched with the track bed plate and the base plate, A groove in the cushion body, characterized by:

The upper and lower surfaces of the cushion body, the upper and lower surfaces of the bottom of the groove, and the outer and inner surfaces of the side walls of the groove are all provided with protrusions; the cushion body is longitudinally front and rear The rigidity of the cushion body is less than that of the middle part; the section around the cushion body is interdigitated with the gap facing inward.

Compared with the prior art, the beneficial effects of the utility model are:

1. The high stiffness in the middle of the cushion can play a good role in supporting, bearing and transmitting force. At the same time, the front and rear of the cushion have small stiffness and good elasticity, which can effectively buffer the train load just acting on the cushion and driving away. The impact on the cushion layer during the cushioning can avoid the local void between the ballast bed plate and the base plate, damage the elastic damping cushion layer, ensure the life of the track structure and the safety of high-speed trains, especially suitable for slab truss bridges and roadbeds with uneven rigidity It is used on the line section with poor condition.

2. The cross-section around the cushion body is interdigitated with the gap facing inward, and the outer surface of the interdigitated shape with the gap facing inward is sealed. The upper and lower surfaces have elastic properties and the bed plate and the base plate are closely fitted, supplemented by pasting. A good sealing structure is formed, which effectively prevents the infiltration of rainwater and mud, prolongs the service life of the rubber, and further improves the service life of the entire elastic damping cushion.

3. The upper and lower surfaces of the cushion body, the upper and lower surfaces of the bottom of the groove, and the protrusions on the outer and inner surfaces of the side walls of the groove can undergo lateral deformation under load, and the vibration reduction The noise effect is good; at the same time, the amount of rubber is saved, and the manufacturing cost is reduced.

The above-mentioned pad body is provided with a plurality of through holes. In this way, air can be prevented from blowing between the cushion and the concrete base plate, further ensuring its good vibration and noise reduction, and force-bearing and force-transmitting functions.

The areas of the above-mentioned cushion body cushion body in the longitudinal front and rear are equal to 1/4 of the entire cushion body.

The above-mentioned protrusions on the cushion body are hexagonal prism protrusions.

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

Description of drawings

Fig. 1 is a top view structural diagram of an embodiment of the utility model.

Fig. 2 is a schematic cross-sectional structure diagram of the embodiment of the utility model installed between the ballast bed plate and the base plate.

Detailed ways

Example

Figures 1 to 2 show that a specific embodiment of the present invention is a ballastless track anti-vacation vibration damping cushion, which is installed between the track bed plate 4 and the base plate 3, including the track bed plate 4, The base plate 3 matches the cushion body 1 , and the groove 9 on the cushion body 1 .

The upper and lower surfaces of the cushion body 1, the upper and lower surfaces of the bottom of the groove 9, and the outer and inner surfaces of the side walls of the groove 9 are provided with protrusions 6; The rigidity of the front part 1a and the rear part 1c is smaller than that of the middle part 1b; the section around the cushion body 1 is in the shape of interdigitated fingers 5 with notches facing inward.

The cushion body 1 of this example is provided with a plurality of through holes 8 . The area of the cushion body 1 in the longitudinal front 1 a and the rear 1 c is equal to 1/4 of the entire cushion body 1 . The protrusion 6 on the cushion body 1 is a hexagonal prism protrusion.

Claims (4)

1. a non-fragment orbit prevents coming to nothing the cushion blocking layer, be installed between bed board (4) and the bed plate (3), comprise and the bed course body (1) of road bed board (4), bed plate (3) coupling, the groove (9) on the bed course body (1) is characterized in that:

External surface and the inner surface of upper surface, soffit and groove (9) sidewall of the upper surface of described bed course body (1) and soffit, groove (9) bottom are equipped with projection (6); Bed course body (1) is in the rigidity of longitudinally anterior (1a) and rear portion (1c) rigidity less than middle part (1b); Bed course body (1) cross section all around is the inside interdigitated of breach (5).

2. the anti-cushion blocking layer that comes to nothing of a kind of non-fragment orbit according to claim 1 is characterized in that, described bed course body (1) is provided with a plurality of through holes (8).

3. the anti-cushion blocking layer that comes to nothing of a kind of non-fragment orbit according to claim 1 is characterized in that, described bed course body (1) is equal at the area of longitudinally anterior (1a) and rear portion (1c), is 1/4 of whole bed course body (1).

4. the anti-cushion blocking layer that comes to nothing of a kind of non-fragment orbit according to claim 1 is characterized in that, the projection (6) on the described bed course body (1) is six prismatic projections.

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