CN209907117U

CN209907117U - Compound sleeper of multilayer substrate

Info

Publication number: CN209907117U
Application number: CN201822158584.1U
Authority: CN
Inventors: 米垚; 张红元; 张金龙
Original assignee: Luoyang Sunrui Rubber and Plastic Technology Co Ltd
Current assignee: Luoyang Sunrui Rubber and Plastic Technology Co Ltd
Priority date: 2018-12-21
Filing date: 2018-12-21
Publication date: 2020-01-07
Anticipated expiration: 2028-12-21

Abstract

The utility model provides a compound sleeper of multilayer substrate, compound sleeper of multilayer substrate includes at least one deck base member layer and at least one deck enhancement layer, base member layer and enhancement layer alternate interval setting in proper order, base member layer and enhancement layer pass through the tie coat and bond together, base member layer and enhancement layer have different density and intensity, compound sleeper of multilayer substrate have different density and intensity base member layer and enhancement layer through setting up, make compound sleeper of multilayer substrate can obtain indexes such as different mechanical properties, elasticity, density through simple size and structural adjustment, satisfy different railway operating mode requirements, have and make, convenient to use, application scope is wide advantage.

Description

Compound sleeper of multilayer substrate

Technical Field

The utility model relates to a transportation equipment technical field, concretely relates to sleeper, the compound sleeper of in particular to multilayer substrate, especially a compound sleeper of multilayer substrate suitable for big axle load railway circuit.

Background

The sleeper is used for paving railway and special track running equipment and bearing equipment, and plays an important role in railway construction. In a track structure, the main function of the sleeper is to bear the load, transverse force and longitudinal horizontal force transmitted by the rail and uniformly transmit the load, transverse force and longitudinal horizontal force to the track bed, and meanwhile, the sleeper also plays a role in keeping the direction, gauge and position of the rail. Therefore, the sleeper is required to have certain density, strength, elasticity and durability, and the sleeper is required to have the specification and the size which are convenient for fixing the steel rail and have the capability of resisting the longitudinal and transverse displacement of the line.

The traditional sleeper is a wooden sleeper, is light in weight and easy to install, but is gradually replaced by a concrete sleeper in recent years due to the defects of easy corrosion and short service life, so that the concrete sleeper gradually becomes the sleeper with the largest domestic market consumption. The concrete sleeper has the advantages of corrosion resistance, long service life and low manufacturing cost, but has high density, difficult transportation and installation and inconvenient use. As a result, synthetic ties, most notably polyurethane foam synthetic ties, are now on the market. The composite sleeper has the density equivalent to that of a wood sleeper, has higher mechanical strength than a concrete sleeper, and has the advantages of good corrosion resistance, convenient installation and simple maintenance.

In general, in order to achieve a density equivalent to that of a wooden sleeper, a synthetic sleeper uses a foamed resin as a matrix material and continuous glass fibers as a reinforcing material. For example, chinese patent No. CN200610103934.3 provides a synthetic crosstie with excellent flame retardant property and a method for manufacturing the same. The synthetic sleeper comprises a synthetic sleeper body and a flame-retardant layer formed on the surface of the synthetic sleeper body. The release agent adhering to the surface of the synthetic crosstie body and a part of the surface layer of the foam base material were polished with sandpaper having a roughness of #120 or less. The polishing layer formed by polishing has numerous irregularities corresponding to the roughness of the abrasive paper. And a urethane resin-based paint to which an inorganic filler is added is applied by a spray gun on the surface side of the polishing layer to form a flame retardant layer.

But during use it was found that: however, the composite sleeper has poor comprehensive performance, and can only be used in the urban rail transit field with smaller train axle load or used for special road sections such as railway bridges, turnouts and the like instead of wooden sleepers at present. In heavy load lines such as railway freight lines and the like, due to the fact that the train axle weight is large, after the train runs for a long time, cracks are prone to occurring on the existing composite sleeper, pits are prone to occurring on the surface of the existing composite sleeper, and the application range of the composite sleeper is greatly limited.

Chinese patent application No. CN201320175430.8 provides a composite sleeper for mining, as shown in fig. 1, composite sleeper is the upper and lower multilayer structure formed by foaming, the composite sleeper has multiple layers of net-shaped glass fibers for strengthening, the middle of every two adjacent layers of net-shaped glass fibers is a foaming body obtained by mixing and foaming polyurethane foaming material, flame retardant, and filler, and multiple layers the net-shaped glass fibers and the foaming body form a composite sleeper of an integral structure, the composite sleeper improves strength, corrosion resistance and impact resistance of the composite sleeper to a certain extent by the arrangement of multiple layers of net-shaped glass fibers, reduces weight and cost, but finds through tests: the composite sleeper described in this patent cannot be used in railway lines with large axle loads.

Therefore, providing a sleeper with good comprehensive performance and capable of adapting to various different railway working conditions is one of the technical problems to be solved urgently by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a compound sleeper of multilayer substrate to solve the requirement that current compound sleeper comprehensive properties is poor, can't adapt to multiple different railway operating mode, especially can't be applicable to the technical problem of big gross rail load railway circuit.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the utility model provides a compound sleeper of multilayer substrate, compound sleeper of multilayer substrate includes at least one deck base member layer and at least one deck enhancement layer, base member layer and enhancement layer are in proper order alternate interval setting, base member layer and enhancement layer bond together through the tie layer, base member layer and enhancement layer have different density and intensity.

Further, the top and the bottom of the multilayer substrate composite sleeper are provided with the substrate layers.

Furthermore, the multilayer substrate composite sleeper comprises three substrate layers and two reinforcing layers.

Further, the top and the bottom of the multilayer substrate composite sleeper are the reinforced layers.

Furthermore, the multilayer substrate composite sleeper comprises two substrate layers and three reinforcing layers.

Further, the density of the substrate layer is smaller than that of the enhancement layer, and the strength of the substrate layer is smaller than that of the enhancement layer.

Furthermore, the base layer is formed by foaming by taking foaming resin as a base material and glass fiber as a reinforcing material.

Furthermore, the reinforced layer is compounded by taking non-foaming resin as a base material and glass fiber as a reinforced material.

Further, the glass fiber is one or more of glass fiber cloth, glass fiber yarn and glass fiber felt.

Further, the strength of the bonding layer after curing is larger than that of the base layer and the reinforcing layer.

Compared with the prior art, compound sleeper of multilayer substrate have following advantage: through setting up base member layer and the enhancement layer that has different density and intensity, make the compound sleeper of multilayer substrate can obtain indexes such as different mechanical properties, elasticity, density through simple size and structural adjustment, satisfies different railway operating mode requirements, has manufacturing, convenient to use, advantage that application scope is wide.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

FIG. 1 is a schematic structural view of a prior art composite tie;

fig. 2 is a schematic structural diagram of a multilayer substrate composite sleeper according to an embodiment of the present invention;

fig. 3 is another schematic structural diagram of the multilayer substrate composite sleeper according to the embodiment of the present invention.

Description of reference numerals:

1-a substrate layer, 2-a reinforcing layer and 3-a bonding layer.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example 1

As shown in fig. 2-3, the composite sleeper with the multi-layer base material comprises at least one base body layer 1 and at least one reinforcing layer 2, wherein the base body layer 1 and the reinforcing layer 2 are sequentially arranged alternately at intervals, and the base body layer 1 and the reinforcing layer 2 are bonded together through a bonding layer 3.

Further, the base layer 1 and the reinforcing layer 2 have different densities and strengths.

Further, the density of the base layer 1 is smaller than that of the reinforcing layer 2.

Further, the strength of the base layer 1 is smaller than that of the reinforcing layer 2.

Preferably, the base layer 1 is formed by foaming a foaming resin as a base material and a glass fiber as a reinforcing material. The glass fiber is one or more of glass fiber cloth, glass fiber yarn and glass fiber felt.

More preferably, the base layer 1 is formed by foaming a foaming resin as a base material and a continuous glass fiber yarn as a reinforcing material. The base body layer 1 uses foaming resin as a base body material, so that the base body layer has lower density and higher elasticity, and through the arrangement of the base body layer 1, the overall weight of the multilayer base material composite sleeper can be reduced, and the overall elasticity of the multilayer base material composite sleeper is improved.

Further, the reinforcing layer 2 is formed by compounding non-foaming resin serving as a base material and glass fiber serving as a reinforcing material, wherein the glass fiber is one or more of glass fiber cloth, glass fiber yarn and glass fiber felt. The enhancement layer 2 adopts non-foaming resin as a base material, so that the enhancement layer 2 has higher density and strength, and the overall mechanical property of the multilayer base material composite sleeper is greatly improved.

Furthermore, the thickness of the bonding layer 3 is small, and preferably, the thickness of the bonding layer 3 is less than or equal to 1 mm.

Further, the strength of the adhesive layer 3 after curing is greater than the strength of the base layer 1 and the reinforcing layer 2. The adhesive layer 3 is made of a mixed resin.

In the embodiment, the multilayer substrate composite sleeper can obtain different indexes such as mechanical property, elasticity and density through simple size and structure adjustment by arranging the substrate layer 1 and the enhancement layer 2 with different densities and strengths in the using process so as to meet different railway working condition requirements, and the multilayer substrate composite sleeper has wide application range and obvious economic and social benefits.

Example 2

As shown in fig. 2, the multilayer substrate composite sleeper comprises a substrate layer 1 and a reinforcing layer 2, wherein the substrate layer 1 and the reinforcing layer 2 are bonded together through a bonding layer 3.

Further, the base layer 1 and the enhancement layer 2 are alternately arranged in sequence at intervals, and the base layer 1 is arranged at the top and the bottom of the multilayer base material composite sleeper.

Preferably, the multilayer substrate composite sleeper comprises three substrate layers 1 and two reinforcing layers 2.

Example 3

As shown in fig. 3, the multilayer substrate composite sleeper comprises a substrate layer 1 and a reinforcing layer 2, wherein the substrate layer 1 and the reinforcing layer 2 are bonded together through an adhesive layer 3.

Further, the substrate layers 1 and the enhancement layers 2 are sequentially arranged alternately at intervals, and the enhancement layers 2 are arranged at the top and the bottom of the multilayer base material composite sleeper.

Preferably, the multilayer substrate composite sleeper comprises two substrate layers 1 and three reinforcing layers 2.

From the above, it can be seen that: this application compound sleeper of multilayer substrate has the base member layer 1 and the enhancement layer 2 of different density and intensity through the setting, makes compound sleeper of multilayer substrate can obtain indexes such as different mechanical properties, elasticity, density through simple size and structural adjustment, satisfies different railway operating mode requirements, has the advantage that makes, convenient to use, application scope is wide.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The composite sleeper is characterized by comprising at least one base body layer (1) and at least one reinforcing layer (2), wherein the base body layer (1) and the reinforcing layer (2) are sequentially arranged alternately at intervals, the base body layer (1) and the reinforcing layer (2) are bonded together through a bonding layer (3), and the base body layer (1) and the reinforcing layer (2) have different densities and strengths.

2. Multilayer substrate composite sleeper according to claim 1, characterized in that the top and bottom of the multilayer substrate composite sleeper are the base layer (1).

3. Multilayer substrate composite sleeper according to claim 2, characterized in that it comprises three base layers (1) and two reinforcing layers (2).

4. Multilayer substrate composite sleeper according to claim 1, characterized in that the top and bottom of the multilayer substrate composite sleeper are the reinforcement layers (2).

5. Multilayer substrate composite sleeper according to claim 4, characterized in that it comprises two base layers (1) and three reinforcing layers (2).

6. Multilayer substrate composite sleeper according to claim 1, characterized in that the density of the matrix layer (1) is less than the density of the reinforcement layer (2), the strength of the matrix layer (1) being less than the strength of the reinforcement layer (2).

7. Multilayer substrate composite sleeper according to claim 1, characterized in that the strength of the tie layer (3) after curing is greater than the strength of the matrix layer (1) and the reinforcement layer (2).