CN202298376U - Elastic padding plate and double-block ballastless track structure adopting same - Google Patents

Abstract

The utility model discloses an elastic padding plate and a double-block ballastless track structure adopting the same, wherein, the elastic padding plate comprises a rubber plate (1) and low density polyethylene (2) which are combined into a whole; the rubber plate (1) comprises a bottom plate (11) and a middle bulge (12) that extends upwards from the bottom plate (11); the low density polyethylene (2) is a flat plate with a hollow part; the hollow part of the low density polyethylene (2) and the middle bulge (12) of the rubber plate (1) are matched with each other so as to form an integral plane surface; in addition, the size of the circumference of low density polyethylene (2) is identical to that of the bottom plate (11) of the rubber plate (1). The elastic padding plate with a simple structure is convenient to manufacture and install, and can effectively prevent impurities from intruding; in addition, the double-block ballastless track structure adopting the elastic padding plate is further provided, is more convenient to install and manufacture, can effectively prevent the impurities from intruding into the elastic padding plate, and can ensure the vibration prevention effect and the construction quality.

Description

Elastic backing plate and double-block ballastless track structure using the backing plate

technical field

The utility model relates to the field of railway tracks and anti-vibration devices, in particular to an elastic backing plate and a double-block ballastless track structure using the backing plate.

Background technique

In my country's railway construction, the importance of high-speed railways is increasing, and due to the increasing quality and speed of trains, in the construction of high-speed railways, it is necessary to solve the impact of vibration and noise generated by vehicles running quickly on operation and Otherwise, its service life will be greatly shortened, and the probability of failure will also be greatly increased. In order to overcome the interference and damage of vibration noise to the stability of the ballast bed and the operation of the vehicle, it is necessary to have technologies and products that can effectively reduce vibration and noise. , to ensure the safety of line operation and achieve the ideal speed.

Existing rail elastic device can be referred to Fig. 1, and such elastic device is arranged between ballast bed plate and base plate, has adopted low-density polyethylene 99 to be set around elastic plate 98, and elastic plate 98 is installed earlier during construction, Then splicing low-density polyethylene 99 around the elastic plate 98, the low-density polyethylene 99 is fixed to both sides of the elastic plate 98 by adhesive tape 100, and such a structure is damped by the elastic plate 98, but such an elastic device has a complicated process. The quality of splicing is difficult to guarantee, and it is easy to cause water or debris to enter the two sides of the elastic board, resulting in poor vibration reduction effect.

For this reason, in view of the above-mentioned defects, the designers of the utility model have researched and designed a kind of elastic backing plate and a double-block ballastless backing plate using the backing plate by concentrating on research and design, and integrating the experience and achievements of related industries for many years. track structure to overcome the above defects.

Contents of the invention

The purpose of the utility model is to provide an elastic backing plate, which has a simple structure, is convenient to manufacture, is convenient to install, and can effectively prevent sundries from intruding.

The purpose of this utility model is also to provide a double-block ballastless track structure using an elastic backing plate, which is more convenient to install and manufacture, can effectively prevent sundries from invading the elastic backing plate, and ensure the anti-vibration effect and construction quality .

In order to achieve the above object, the utility model discloses an elastic backing plate, which is characterized in that: the elastic backing plate includes a rubber plate 1 and a low-density polyethylene 2 combined into one, the rubber plate 1 includes a bottom plate 11 and from the bottom plate 11 The middle protrusion 12 extending upwards, the low-density polyethylene 2 is a flat plate with a hollow part, the hollow part of the low-density polyethylene 2 cooperates with the middle protrusion 12 of the rubber plate 1 to form an integral plane, and the low The outer peripheral dimension of the density polyethylene 2 is the same as that of the bottom plate 11 of the rubber sheet 1 .

Wherein: the elastic backing plate is trapezoidal.

Wherein: the surface area of the middle protrusion 12 is 1/2 to 6/7 of the surface area of the elastic pad.

Wherein: the surface area of the middle protrusion 12 is 2/3 to 5/6 of the surface area of the elastic pad.

Wherein: the surface area of the middle protrusion 12 is 3/4 of the surface area of the elastic backing plate.

Also disclosed is a double-block ballastless track structure, which is characterized in that the structure includes a steel rail 91, a ballast bed plate 92, a base plate 93 and a protective layer 94, the steel rail 91 is fixed to the ballast bed plate 92, and the ballast bed plate 92 is located on the base plate 93 , the base plate 93 is secured to the protective layer 94 .

The bottom of each fast track bed board 92 is provided with two anti-shear bosses, and the base board 93 is provided with corresponding two grooves, and the above-mentioned elastic pads are arranged around the grooves.

Wherein: a 4mm thick geotextile is arranged between the road bed plate 92 and the base plate 93 .

Through the above structure, the elastic backing plate of the present invention and the double-block ballastless track structure using the backing plate have the following technical effects:

The rubber plate of the elastic backing plate provides anti-vibration effect. When the train passes the rails, the force in the horizontal direction is transmitted to the groove, and the rubber plate of the elastic backing plate is elastically deformed to provide a damping effect on the track bed. Moreover, due to The low-density polyethylene and the rubber plate are integrally formed without splicing during on-site installation, which simplifies the installation process and increases the installation speed. The low-density polyethylene surrounds the protrusion of the rubber plate to avoid water when fixing the grout , mortar, aggregate, etc. invade the rubber sheet, avoiding the impact on the anti-vibration effect, and more conducive to ensuring the construction quality.

The utility model will be further described in detail through the following specific embodiments, and further combined with the description of the accompanying drawings will get a clearer and more obvious understanding.

Description of drawings

Figure 1 shows a schematic diagram of an existing elastic device.

Fig. 2 has shown the schematic diagram of the double-block ballastless track structure using the elastic backing plate of the utility model.

Figure 3 shows a cross-sectional view of a double-block ballastless track structure with elastic pads.

Figure 4 shows a top view of a double-block ballastless track structure with elastic pads.

Fig. 5 shows a schematic diagram of the elastic backing plate of the present invention.

Fig. 6 shows an exploded schematic view of the elastic backing plate of the present invention.

Fig. 7 shows a top view of the elastic backing plate of the present invention.

Fig. 8 shows a front view of the elastic backing plate of the present invention.

Fig. 9 shows a cross-sectional view of X-X in Fig. 7 .

Detailed ways

Referring to Fig. 2, it shows the double-block ballastless track structure adopting the elastic backing plate of the present utility model, which adopts the block-type modular structure, and the structure includes the rail 91, the track bed plate 92, the base plate 93 and the protective layer 94, wherein the rail 91 is fixed to the track bed plate 92 through a fastener system and a double block sleeper, the track bed plate 92 is located on the base plate 93 and a geotextile is arranged between the track bed plate 92 and the base plate 93, preferably 4mm thick geotextile, the base plate 93 is fixed to the protective layer 94.

The bottom of each fast track bed plate 92 is provided with two shear bosses, and the base plate 93 is then provided with two corresponding grooves, in the process of installation and fixing, the shear bosses are correspondingly installed in the grooves ( See Figure 3 and Figure 4), the groove is rectangular, including two long sides A and two short sides B, and elastic damping devices are arranged around the groove, and the first elastic damping device is arranged on the long side A. The damping device 95 is the second elastic damping device 96 arranged on the short side B, thereby supporting the track bed slab and limiting the position through the shear boss. When the train is running, the vertical force and the horizontal force are separated. The horizontal force can be transmitted mainly through the shear boss, thereby improving the support in the horizontal direction and improving the vibration damping effect.

Referring to Fig. 5 to Fig. 9, the elastic backing plate that can be used on the periphery of the above-mentioned groove as an elastic damping device is shown. Including the base plate 11 and the middle protrusion 12 extending upward from the base plate 11, the low-density polyethylene 2 is a flat plate with a hollow portion, and the hollow portion of the low-density polyethylene 2 cooperates with the middle protrusion 12 of the rubber plate 1 to form a Overall plane, and, the peripheral dimension of this low-density polyethylene 2 is identical with the peripheral dimension of the bottom plate 11 of rubber plate 1, thus, after the two are combined into one, rubber plate 1 and low-density polyethylene 2 form a whole, preferably Bonding can be done by bonding, and the elastic backing plate can be trapezoidal to fit around the groove.

Through such a structure, the rubber plate of the elastic backing plate provides anti-vibration effect. When the train passes the rail, its horizontal force is transmitted into the groove, and the rubber plate of the elastic backing plate is elastically deformed to provide vibration reduction for the track bed. effect, and because the low-density polyethylene and the rubber plate are integrally formed, there is no need for splicing during on-site installation, which simplifies the installation process and improves the installation speed. When grouting, it can prevent water, mortar, aggregate, etc. from intruding into the rubber sheet, avoiding the impact on the anti-vibration effect, and is more conducive to ensuring the construction quality.

In order to effectively provide the anti-vibration effect, the middle protrusion 12 of the rubber plate 1 must have a certain bearing area. Therefore, through a large number of experiments and designs, the surface area of the middle protrusion 12 is 1/2 to 1/2 of the surface area of the elastic backing plate. 6/7 is better, more preferably, the surface area of the middle protrusion 12 is 2/3 to 5/6 of the surface area of the elastic backing plate, and most preferably, the surface area of the middle protrusion 12 is 2/3 to 5/6 of the surface area of the elastic backing plate. 3/4 of the surface area.

Obviously, the above descriptions and records are only examples and not intended to limit the disclosure, application or use of the present utility model. Although the embodiment has been described in the embodiment and described in the accompanying drawings, the utility model is not limited by the examples of the accompanying drawings and described in the embodiment as the best mode currently considered to implement the teaching of the utility model Certain examples, the scope of the present invention shall include any embodiment falling within the foregoing description and appended claims.

Claims (7)

1. An elastic backing plate is characterized in that: the elastic backing plate comprises a rubber plate (1) and a low-density polyethylene (2) combined into one, and the rubber plate (1) comprises a base plate (11) and from the base plate (11) The middle protrusion (12) extending upwards, the low-density polyethylene (2) is a flat plate with a hollow portion, the hollow portion of the low-density polyethylene (2) and the middle protrusion (12) of the rubber plate (1) ) cooperate with each other to form an integral plane, and the peripheral dimension of the low-density polyethylene (2) is the same as that of the bottom plate (11) of the rubber plate (1). 2. The elastic pad as claimed in claim 1, wherein the elastic pad is trapezoidal. 3. The elastic backing plate according to claim 1 or 2, characterized in that: the surface area of the middle protrusion (12) is 1/2 to 6/7 of the surface area of the elastic backing plate. 4. The elastic backing plate according to claim 3, characterized in that: the surface area of the middle protrusion (12) is 2/3 to 5/6 of the surface area of the elastic backing plate. 5. The elastic backing plate according to claim 3, characterized in that: the surface area of the middle protrusion (12) is 3/4 of the surface area of the elastic backing plate. 6. The double-block ballastless track structure adopting the elastic backing plate described in any one of claims 1-5, is characterized in that: the structure comprises steel rail (91), ballast bed plate (92), base plate (93) and The protective layer (94), the steel rail (91) is fixed on the track bed plate (92), the track bed plate (92) is located on the base plate (93), and the base plate (93) is fixed on the protective layer (94). The bottom of every fast track bed board (92) is provided with two anti-shear bosses, and then is provided with two corresponding grooves on the base plate (93), and above-mentioned elastic backing plate is all provided with around groove. 7. The double-block ballastless track structure according to claim 6, characterized in that a 4mm thick geotextile is arranged between the ballast bed plate (92) and the base plate (93). the

Images