RU186100U1 - MAT VIBROINSULATING BALLAST - Google Patents

Abstract

The utility model relates to the field of transport construction, namely to gaskets placed under the crushed stone base of the railway track and the soles of the sleepers. An expansion of the arsenal of technical means is being achieved. The vibration-isolating sub-ballast mat contains a vibration-insulating layer and two external reinforcing layers and is characterized in that the vibration-insulating layer is made of styrene-ethylene-polypropylene-styrene rubber, the reinforcing layers are made of synthetic felt, and contains recesses located along two opposite sides of the mat. 4 s.p. f-ly, 5 ill.

Description

The utility model relates to the field of transport construction, namely to gaskets placed under the crushed stone base of the railway track and the soles of the sleepers.

The prior art is known for a sleeper damper (RU 89531 U1) made in the form of a plate combined from several materials and having two opposite external contact sides, characterized in that the plate is made of three layers, while the upper part of the plate and its base are made of non-woven material based on polyesters, and the middle layer of the plate is made of porous rubber with a filler in the following ratio of components, wt. %: porous rubber - 90, filler - 10, moreover, natural cork chips with a diameter of 100 μm and ultra-high molecular weight polyethylene (UHMWPE) with a given molecular weight and specially developed particle surface are used as filler.

Also known is a rail support with a shock absorber (RU 130314 U1), comprising a shock absorber attached to the sole of the support and made in the form of a multilayer plate, the upper part and base of which are made of non-woven material, and the middle part of the plate contains rubber material, characterized in that the upper a part of the plate facing the sole of the support and the base of the plate facing the ballast layer of the railroad bed are made of non-woven needle-punched fiber, and the middle part of the plate is formed of at least two x layers of composite rigid water-resistant rubber, each rubber layer being separated from each other by a TK-200 fabric layer.

The disadvantages of the known solutions are the difficulty of manufacturing a vibration-insulating layer, which increases the cost of the vibration-insulating mat, as well as its insufficient wear resistance and durability.

The technical task of the claimed utility model is to eliminate the above drawbacks and create a rail support with improved vibration absorption characteristics to ensure vibration reduction and noise reduction during rolling stock passage, as well as with improved performance characteristics, increased durability and durability.

The technical result of the claimed utility model is to expand the arsenal of technical means.

The technical result is achieved due to the fact that the vibration-isolating sub-ballast mat contains a vibration-insulating layer and two external reinforcing layers, while the vibration-insulating layer is made of styrene-ethylene-polypropylene-styrene rubber, the reinforcing layers are made of synthetic felt.

In addition, the mat contains recesses located along two opposite sides of the mat.

In addition, synthetic felt is reinforced by surface firing.

In addition, the size of the granules of styrene-ethylene-polypropylene-styrene rubber is from 0.58 to 4 mm.

In addition, the mat further comprises drainage holes.

The essence of the claimed utility model is illustrated by drawings, where:

1 - vibration isolation layer;

2 - reinforcing layers;

3 - recesses;

4 - drainage holes;

5 - adhesive tape;

6 - reinforced plastic.

The vibration-proofing mat can be made in the form of a roll or plate and contains three layers: vibration-proofing 1 and two reinforcing layers 2. Vibration-proofing ballast mats are available in thicknesses from 10 to 30 mm. The mat is three-layer (Fig. 1, 2).

The upper and lower layers of 2 mats are made of synthetic felt reinforced with surface firing, which increases its strength and stiffness characteristics. Mat is filled with a granular composite material based on styrene-ethylene-polypropylene-styrene rubber (SEPS) with a granule size of 0.58 to 4 mm. This range of granule sizes is optimal for providing in the finished product increased absorption of vibrations and noise generated during the passage of rolling stock.

Also, there is a possible embodiment of a vibration-insulating mat containing five layers alternately changing each other: two layers of vibration-insulating material, separated by a reinforcing layer and two external reinforcing layers.

The connection of these layers of mat in a single design occurs at the time of molding.

For installation in the ballast ballast layer of the upper structure of the track, it is preferable to have a concave (trough-shaped) vibration isolation mat. In order to form a concave shape of the mat at the stage of its installation, recesses 3 are provided (Fig. 1). It is preferable to make recesses to the depth of the upper reinforcing and middle layers, while the shape of the recess is a longitudinal rectilinear grooves in cross section having the shape of a rectangular triangle. This shape and depth of the recess allows you to form a bend of the mat at an angle of 90 ° without significant deformations (Fig. 2).

Such a design and the material from which the sub-ballast vibration isolation mat is made provides high performance characteristics of the elasticity of the suspension mass of the system, resulting in a low resonant frequency and a high level of noise absorption.

In order to provide additional drainage, when laying the upper track structure in areas with a large amount of precipitation, the vibration isolation mat may contain many through drainage holes 4 (Fig. 3), evenly distributed over the entire surface of the mat.

Mats are connected in two ways:

using adhesive tape 5 (Fig. 3);

using a fastening element with reinforced plastic 6 (Fig. 4, 5).

Reinforced plastic 6 connects the vibration-proofing mats with a lock connection, preventing them from disconnecting spontaneously during operation.

In FIG. 5 shows a design variant of the vibration-insulating mat with transverse partitions, in which the connection of three vibration-insulating mats in two perpendicular planes is also carried out using fastening elements made of reinforced plastic 6.

The proposed technical solution allows you to create a mat vibration-proof sub-ballast, which has improved performance, wear resistance and durability.

The proposed technical solution can be used on railways for high-speed and high-speed rail traffic.

Claims (5)

1. The mat is vibration-proof sub-ballast, comprising a vibration-insulating layer and two external reinforcing layers, characterized in that the vibration-insulating layer is made of styrene-ethylene-polypropylene-styrene rubber, the reinforcing layers are made of synthetic felt. 2. Mat according to claim 1, characterized in that it contains recesses located along two opposite sides of the mat. 3. Mat according to claim 1, characterized in that the synthetic felt is reinforced by surface firing. 4. Mat according to claim 1, characterized in that the granule size of styrene-ethylene-polypropylene-styrene rubber is from 0.58 to 4 mm. 5. Mat according to claim 1, characterized in that it further comprises drainage holes.

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