Track damping structure based on metal damping pad

Abstract

The utility model discloses a rail damping structure based on a metal damping pad. The rail damping structure comprises a sleeper, a base arranged on the sleeper, a steel rail arranged on the base and the damping pad arranged correspondingly. The anti-vibration pads are respectively arranged between the steel rail and the base and between the base and the sleeper; the anti-vibration pad is a metal damping anti-vibration pad and comprises a plurality of tightly-arranged wire winding layers, and the adjacent wire winding layers are sequentially connected. Each wire winding layer is composed of metal wires, and the metal wires are wound into a spiral winding structure similar to a spring. The metal wire is processed into the anti-vibration pad, a metal material is used for replacing a rubber material, the anti-corrosion performance and other performance of the anti-vibration pad are improved while the anti-vibration performance is met, the service life is greatly prolonged, and the severe environment resistance is greatly improved. The cable has the advantages of relatively long service life, capability of better coping with severe environments and corrosion resistance.

Description

Technical Field

[0001] This utility model relates to the field of track vibration reduction technology, and in particular to a track vibration reduction structure based on a metal vibration damping pad. Background Technology

[0002] During operation, rail transit systems generate vibrations and noise due to the impact of wheels on rails. Shock waves propagate through tracks, tunnels, soil, and ground structures, causing corresponding vibrations and negatively impacting the surrounding environment. Currently, rail vibration dampers on the market primarily use natural rubber and neoprene rubber as damping materials; however, these materials have the following drawbacks:

[0003] 1. Traditional rubber-based vibration damping materials are prone to aging and have a short service life. During the application of track vibration dampers, they are completely exposed to the outdoor environment. The extreme service environment makes rubber products prone to oxidation, which greatly reduces their vibration damping performance and increases the difficulty of maintenance and replacement.

[0004] 2. Traditional rubber-based vibration damping materials have a narrow applicable temperature range. The operating temperature range of ordinary natural rubber is about -60℃ to +80℃. In extreme high and low temperature environments, the vibration damping performance decreases and the mechanical property stability of the material is poor. At low temperatures, the rubber will transition from a highly elastic state to a glassy state and lose its elasticity. At high temperatures, it will further transition from a highly elastic state to a viscous flow state, which greatly reduces the damping.

[0005] 3. Traditional rubber-based vibration damping materials are prone to corrosion. In severe weather conditions such as rain and snow, coupled with the impact of pollutants discharged during train operation, the corrosion of rubber is accelerated. Utility Model Content

[0006] The purpose of this invention is to provide a track vibration damping structure based on metal damping pads. This invention has the advantages of relatively long service life, better ability to cope with harsh environments, and corrosion resistance.

[0007] The technical solution of this utility model is as follows: a track vibration damping structure based on metal damping pads, including a sleeper, a base on the sleeper, a rail on the base, and corresponding damping pads; the damping pads are respectively disposed between the rail and the base and between the base and the sleeper; the damping pads are metal damping damping pads, including multiple layers of tightly arranged coiled wire, with adjacent coiled wire layers connected in sequence; each layer of coiled wire is composed of metal wire, and the metal wire is wound into a spiral coil structure in the shape of a spring.

[0008] In the aforementioned track vibration damping structure based on metal damping pads, the base is fixed to the sleeper by base fastening bolts distributed at both ends; the sleeper has an installation groove in the middle for installing the base, the installation groove is in the shape of an inverted trapezoid, and the vibration damping pad is laid in the installation groove and abuts against the bottom of the base.

[0009] In the aforementioned track damping structure based on metal damping pads, gauge blocks, elastic strips on the gauge blocks, and corresponding rail fastening bolts are provided on both sides of the rail; the rail fastening bolts pass through the elastic strips and gauge blocks and are connected to the base.

[0010] Compared with existing technologies, this application improves upon traditional track vibration reduction by laying vibration-damping pads between the rail and the base and between the base and the sleeper, using these pads as vibration-damping materials. This improvement offers the following advantages:

[0011] 1. The vibration damping pad is made of metal wire, which not only has the characteristics of high mechanical strength, high temperature resistance, low temperature resistance and high damping, but also has a spiral coil structure, which gives it a spring-like elastic effect. After being subjected to impact, the vibration damper as a whole is not easily deformed.

[0012] 2. The metal wires inside the vibration damping pad are arranged in a uniform and regular spiral shape. The vibration damping pad with the corresponding density can be selected according to actual needs to meet different damping and stiffness requirements, so as to adapt to different vibration reduction requirements and have a wide range of applications.

[0013] In summary, this utility model has the advantages of relatively long service life, better ability to cope with harsh environments, and corrosion resistance. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a side view of the structure of this utility model;

[0016] Figure 3 This is a structural schematic diagram of the vibration damping pad of this utility model.

[0017] Reference numerals in the attached diagram: 1. Base; 2. Sleeper; 3. Base fastening bolt; 4. Spring clip; 5. Rail fastening bolt; 6. Rail; 7. Gauge block; 8. Vibration damping pad. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0019] Example. Track vibration damping structure based on metal damping pads, such as... Figure 1-3As shown, it includes a sleeper 2, a base 1 on the sleeper 2, a rail 6 on the base 1, and corresponding vibration damping pads 8; the vibration damping pads 8 are respectively disposed between the rail 6 and the base 1 and between the base 1 and the sleeper 2; the vibration damping pads 8 are metal damping vibration damping pads, including multiple layers of tightly arranged coiled wire layers, with adjacent coiled wire layers connected in sequence; each layer of the coiled wire layer is composed of metal wires, and the metal wires are wound into a spiral coil structure in the shape of a spring.

[0020] The base 1 is fixed to the sleeper 2 by base fastening bolts 3 distributed at both ends; the sleeper 2 has an installation groove for mounting the base 1 in the middle, the installation groove is in the shape of an inverted trapezoid, and the vibration damping pad 8 is laid in the installation groove and abuts against the bottom of the base 1.

[0021] The rail 6 is provided with gauge blocks 7, elastic strips 4 on the gauge blocks 7 and corresponding rail fastening bolts 5 on both sides; the rail fastening bolts 5 pass through the elastic strips 4 and the gauge blocks 7 and are connected to the base 1.

[0022] The gauge block 7 is used to fix the rails and adjust the track gauge.

[0023] The vibration damping pad 8 is prepared as follows:

[0024] S1. Wire winding: Winding metal wire into a spiral coil structure similar to a spring;

[0025] S2. Wire drawing: Drawing the spiral-wound metal wire apart to the corresponding pitch;

[0026] S3. Winding blank: The drawn metal wire is wound around a mandrel of the corresponding size, and multiple layers are wound to form a blank;

[0027] S4. Roll forming: The blank is rolled multiple times by the rotating rollers of the roll forming equipment to obtain an elastic porous vibration damping pad with corresponding size and density.

[0028] The vibration damping pad 8 is made of metal wire through a rolling process. The metal wire material effectively overcomes the problem of easy corrosion of traditional rubber materials and greatly improves the service life. The rolling process effectively solves the problem that damping and vibration damping materials prepared by traditional stamping processes are prone to delamination and have insufficient connection strength.

[0029] By specifically processing the metal wire and using metal to replace rubber, the vibration damping performance is satisfied while improving its corrosion resistance and other properties, greatly enhancing its lifespan and resistance to harsh environments.

[0030] Working principle

[0031] During train operation, the impact of the wheels on the rail 6 causes the rail 6 to vibrate violently. The vibration damping pad 8 has a spatial mesh structure formed by a large number of metal wire spiral coils interlocking with each other. When the vibration is transmitted to the vibration damping pad 8, the metal wire coils inside the vibration damping pad 8 rub, slip, squeeze and deform, converting the kinetic energy generated by the impact into heat energy and dissipating it, thus playing the role of damping and vibration reduction.

[0032] Because the vibration damping pad 8 has an elastic porous structure, the track vibration damper can be used in extreme environments, expanding the application range of the track vibration damper and greatly improving its service life.

[0033] The vibration damping pad 8 is manufactured using a rolling process, which makes the distribution of the spiral coil of metal wire more uniform and improves the structural consistency of the vibration damping pad 8.

Claims

1. Rail damping structure based on metal damping pads, characterized in that: The application relates to a rail fastening device, which comprises a sleeper (2), a base (1) arranged on the sleeper (2), a steel rail (6) arranged on the base (1) and a corresponding damping pad (8); the damping pad (8) is arranged between the steel rail (6) and the base (1) and between the base (1) and the sleeper (2) respectively; the damping pad (8) is a metal damping pad, which comprises a plurality of tightly arranged coil wire layers, and the adjacent coil wire layers are sequentially connected; each coil wire layer is composed of metal wires, and the metal wires are wound into a spiral coil structure in a spring-like shape.

2. The metal pad based rail damping structure of claim 1, wherein: The base (1) is fixed on the sleeper (2) through base fastening bolts (3) which are correspondingly distributed at two ends; a middle part of the sleeper (2) is provided with an installation groove for installing the base (1), and the installation groove is in an inverted trapezoidal shape; the damping pad (8) is laid in the installation groove and abuts against the bottom of the base (1).

3. The metal pad based rail damping structure of claim 1, wherein: Corresponding rail distance blocks (7) are arranged on both sides of the steel rail (6), elastic strips (4) are arranged on the rail distance blocks (7), and corresponding steel rail fastening bolts (5) are arranged; the steel rail fastening bolts (5) are connected with the base (1) through the elastic strips (4) and the rail distance blocks (7).

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