CN114775340A - Subway track backing plate assembly with vibration and noise reduction function - Google Patents

Abstract

The invention relates to a subway track pad assembly with vibration and noise reduction functions, comprising a lower track pad (1), a clamping assembly (2), and an upper track pad (3), the lower track pad (1) ) is provided with a plurality of square grooves (5) and sliding grooves (8), each groove (5) is provided with an arc-shaped spring piece (6), and the top of the arc-shaped spring piece (6) is fixedly connected to the pad on the track The bottom of the plate (3), the bottom of the backing plate (3) on the track is fixedly inlaid with two arc-shaped elastic pieces (7), and the second arc-shaped elastic sheet (7) is slidably connected in the chute (8); the Noise reduction and sound-absorbing panels (9) are connected to both sides of the top of the lower track pad (1), and a rubber pad (10) is fixedly connected to the top of the track upper pad (3). Compared with the prior art, in the present invention, the second arc-shaped shrapnel and the first arc-shaped shrapnel are used for buffering and vibration-reducing treatment through the pad on the track and the rubber pad, and then the noise-absorbing and sound-absorbing plate is used for sound-absorbing and noise-reducing treatment to reduce vibration. The noise reduction effect is better.

Description

A subway track backing plate assembly with vibration and noise reduction function

technical field

The invention relates to the technical field of subway track accessories, in particular to a subway track backing plate assembly with vibration and noise reduction functions.

Background technique

The track pad is an important component in the railway track structure. It is installed between the steel rail and the concrete sleeper. Its main function is to buffer the high-speed vibration and impact generated when the vehicle passes the track, protect the roadbed and the sleeper, and provide electrical power to the signal system. Insulation, but the current backing plate is easy to age, easy to deform and crack at the opening, and has poor shock absorption and corrosion resistance, so it cannot be used for a long time. The backing plate is inconvenient to install, which increases the workload of the staff.

CN202010649352.5 discloses a track pad with shock absorption and noise reduction function, comprising a pre-embedded pad and a protection mechanism, the top of the embedded pad is provided with a fixed base, and the inner bottom end of the fixed base is provided with a track pad Plate, the protection mechanism includes holes, the number of the holes is two, the two holes are respectively opened on both sides of the top surface of the track pad, the inner side of the hole is provided with a protective inner ring, the inner side of the hole A limit fixing groove is set on the surface, the outer surface of the protective inner ring is fixedly connected with a limit fixing block, and the limit fixing block is engaged with the inner side of the limit fixing groove; the beneficial effects of the present invention are: by designing the rubber pad, the To shock absorption, and a circular bump is installed on the top of the rubber backing plate, leaving a gap to play a buffering role, and a protective inner ring is installed through the inner side of the hole to prevent the fixing bolt of the pressure plate from passing through the inner side of the hole. Causes wear and tear, and the phenomenon of deformation and cracking occurs.

However, only the cushion plate and rubber pad are used for vibration reduction, and the vibration reduction and noise reduction effect is poor, and the noise easily affects the surrounding environment and passengers, which is not convenient for long-term use.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a subway track backing plate assembly with vibration and noise reduction functions in order to solve the above technical problems, which solves the problem that the existing subway track backing plate is only reduced by the backing plate and the rubber pad during use. The effect of vibration reduction and noise reduction is poor, and the noise easily affects the surrounding environment and passengers.

The object of the present invention can be achieved by the following technical solutions: a subway track pad assembly with vibration and noise reduction functions, comprising a track lower pad, and clamping assemblies are fixedly installed on both sides of the top of the rail lower pad , the top of the lower track pad is provided with a track upper pad, the four corners of the inner cavity of the track upper pad are provided with bolts, and the four corners of the top of the track lower pad are provided with square grooves. The bottom end penetrates the backing plate on the track and is threadedly connected to the inside of the square groove. The inside of the square groove is provided with an arc-shaped spring piece 1, and the top of the arc-shaped spring piece 1 is fixedly connected to the bottom of the backing plate on the track. The bottom of the upper backing plate is fixedly inlaid with the second arc-shaped shrapnel, the top of the lower track plate is provided with a chute for sliding connection with the second arc-shaped shrapnel, and both sides of the top of the lower track plate are welded with noise reduction and sound absorption The top of the backing plate on the track is fixedly connected with a rubber backing plate.

As preferred in the present invention, the first arc-shaped shrapnel and the second arc-shaped shrapnel are complementary designs, wherein the chord length b1 and the bow height h1 of the first arc-shaped shrapnel, and the chord length b2 and the bow height h2 of the second arc-shaped shrapnel, satisfy the relationship: b1 <b2,h1>h2,b1=(1/3～2/3)b2; the arc elasticity of the first arc shrapnel is 15kN/mm, and the arc elasticity of the second arc shrapnel is 10kN/mm.

Preferably in the present invention, a friction ring is fixedly connected to the bottom of the inner wall of the square groove, and the inner wall of the friction ring is in contact with the surface of the bolt.

Preferably in the present invention, four corners of the top of the lower track pad are provided with positioning grooves, and the front and rear ends of both sides of the upper track pad are fixedly connected with positioning plates slidably connected to the positioning slots.

Preferably in the present invention, a steel spring is fixedly connected to the bottom of the second arc-shaped shrapnel, which is phosphating and epoxy-coated to prevent corrosion, and the bottom end of the spring is fixedly connected to the inside of the chute.

Preferably in the present invention, a rubber gasket is fixedly connected to the bottom of the backing plate on the rail, and the backing plate on the rail is made of a high-strength metal material.

As a preferred option of the present invention, the spring, the second arc-shaped elastic piece and the first arc-shaped elastic piece are all made of stainless steel, the bottom of the backing plate on the track is fixedly connected with a corrosion-resistant cloth cover, and the bottom of the corrosion-resistant cloth cover is Fixed connection to the top of the track underpad.

As a preferred option of the present invention, the noise-reducing sound-absorbing panel is a noise-reducing sound-absorbing panel made of commercially available granulated porous materials. There are a large number of evenly distributed tiny pores, and the sound waves sucked into the interior will rub against the solid tendons between the pores. Due to the viscosity and heat conduction effect, the sound energy is converted into heat energy and consumed, thus playing a greater degree of noise reduction.

Compared with the prior art, the beneficial effects of the present invention are as follows:

1. In the present invention, two types of shrapnel with different structures are designed between the upper and lower backing plates, among which the arc-shaped shrapnel is long in length and can move in the chute. The first is large in number and the arc length is short. It mainly acts as a buffer and shares the impact force of the second arc shrapnel, so that the second arc shrapnel can quickly recover its elasticity. The board is subjected to buffering and vibration reduction treatment, and then the noise reduction and sound-absorbing board is used for sound absorption and noise reduction treatment, which has the advantage of better vibration reduction and noise reduction effect, and solves the problem that the existing subway track pads only pass through during use. The cushion plate and rubber pad are used for vibration reduction, the vibration reduction and noise reduction effect is poor, and the noise easily affects the surrounding environment and passengers.

2. The present invention can increase the friction force between the square groove and the bolt by setting the friction ring, and improve the stability of the bolt.

3. By setting the positioning groove and the positioning plate, the present invention can limit the position of the backing plate on the track, and improve the stability of the backing plate on the rail during use.

4. The present invention can improve the damping effect of the second arc shrapnel by setting the spring, and at the same time improve the service life of the second arc shrapnel.

5. The invention can protect the bottom of the upper track pad by setting the rubber gasket, and avoid the phenomenon of collision between the bottom of the track upper pad and the track lower pad.

6. The present invention can protect the dust by setting the corrosion-resistant cloth cover, and avoid the phenomenon that the arc-shaped shrapnel is easily worn and accelerated by the dust and impurities.

Description of drawings

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the enlarged structure diagram of A place in Fig. 1 of the present invention;

Fig. 3 is the front sectional view of the backing plate on the structural track of the present invention;

Fig. 4 is the three-dimensional cross-sectional view of the lower backing plate of the structural track of the present invention;

FIG. 5 is a schematic top view of the backing plate on the structural track of the present invention.

In the figure: 1. Lower track plate; 2. Clamping component; 3. Track upper plate; 4. Bolt; 5. Square groove; 6. Arc shrapnel 1; ; 9. Noise reduction and sound-absorbing board; 10. Rubber backing plate; 11. Friction ring; 12. Positioning groove; 13. Positioning plate; 14. Spring; 15. Rubber gasket; 16. Corrosion-resistant cloth cover.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

As shown in FIG. 1 to FIG. 5 , the present invention provides a subway track backing plate assembly with vibration and noise reduction functions, including a rail lower backing plate 1 , and clamps are fixedly installed on both sides of the top of the rail lower backing plate 1 . Component 2, the top of the lower track pad 1 is provided with a track upper pad 3, the four corners of the inner cavity of the track upper pad 3 are provided with bolts 4, and the four corners of the top of the track lower pad 1 are provided with square grooves 5, bolts 4 Its bottom end penetrates the backing plate 3 on the track and is threadedly connected to the interior of the square groove 5. The interior of the square groove 5 is provided with an arc-shaped elastic piece 1 6, and the top of the curved elastic piece 1 6 is fixedly connected to the bottom of the backing plate 3 on the track. The bottom of the upper track pad 3 is fixedly inlaid with an arc-shaped spring piece 2 7, the top of the track lower pad 1 is provided with a chute 8 that is slidably connected with the arc-shaped spring plate 2 7, and both sides of the top of the track lower pad 1 are welded with The noise-reducing sound-absorbing board 9 (in the present embodiment, a noise-reducing sound-absorbing board made of commercially available granulated porous material is selected), and a rubber backing board 10 is fixedly connected to the top of the backing board 3 on the track.

The arc-shaped shrapnel 1 and the arc-shaped shrapnel 2 are complementary designs, wherein the chord length b1 and the bow height h1 of the arc-shaped shrapnel 1, and the chord length b2 and the bow height h2 of the arc-shaped shrapnel 2 satisfy the relationship: b1<b2,h1> h2, b1=(1/3～2/3)b2, in this embodiment b1=1/2b2; the arc elasticity of the first arc-shaped elastic piece is 15kN/mm, and the arc elasticity of the second arc-shaped elastic piece is 10kN/mm.

Referring to FIG. 2 , a friction ring 11 is fixedly connected to the bottom of the inner wall of the square groove 5 , and the inner wall of the friction ring 11 is in contact with the surface of the bolt 4 .

As a technical optimization solution of the present invention, by arranging the friction ring 11 , the friction force between the square groove 5 and the bolt 4 can be increased, and the stability of the bolt 4 can be improved.

Referring to FIG. 2 , four corners of the top of the lower track pad 1 are provided with positioning grooves 12 , and the front and rear ends of both sides of the upper track pad 3 are fixedly connected with positioning plates 13 slidably connected to the positioning slots 12 .

As a technical optimization solution of the present invention, the positioning groove 12 and the positioning plate 13 can be provided to limit the position of the upper track pad 3, thereby improving the stability of the track upper pad 3 in use.

Referring to FIG. 3 , a spring 14 is fixedly connected to the bottom of the second arc-shaped elastic piece 7 , and the bottom end of the spring 14 is fixedly connected to the inside of the chute 8 .

As a technical optimization solution of the present invention, by arranging the spring 14 , the damping effect of the second arc-shaped elastic piece 7 can be improved, and the service life of the second arc-shaped elastic piece 7 can be improved at the same time.

Referring to FIG. 3 , a rubber gasket 15 is fixedly connected to the bottom of the backing plate 3 on the rail, and the backing plate 3 on the rail is made of high-strength metal material.

As a technical optimization scheme of the present invention, by providing the rubber gasket 15, the bottom of the upper track pad 3 can be protected, and the collision between the bottom of the upper track pad 3 and the lower track pad 1 can be avoided.

Referring to FIG. 2 , the spring 14 , the arc-shaped shrapnel two 7 and the arc-shaped shrapnel one 6 are all made of stainless steel. The bottom of the backing plate 3 on the track is fixedly connected with a corrosion-resistant cloth cover 16 , and the bottom of the corrosion-resistant cloth cover 16 is fixedly connected. Place the top of plate 1 under the track.

As a technical optimization scheme of the present invention, by providing the corrosion-resistant cloth cover 16 , dust can be protected, and the phenomenon that dust impurities easily cause accelerated wear of the arc-shaped spring piece 16 is avoided.

The working principle and use process of the present invention: when in use, when the car passes the track, the track will push down the upper track pad 3, and the arc shrapnel 27 will dampen the track upper pad 3, while the arc The shrapnel 1 6 can buffer and protect the pad 3 on the track through the bolt 4, and the track can be damped by double-layer buffering. better advantage.

To sum up, the subway track backing plate assembly with vibration and noise reduction function is buffered and damped by the curved spring piece 2 7 and the curved spring piece 1 6 through the upper track backing plate 3 and the rubber backing plate 10, and then by The noise reduction and sound absorption board 9 performs sound absorption and noise reduction treatment on the noise, so as to have the advantages of better vibration reduction and noise reduction effect, and solve the problem that the existing subway track pads are only used for vibration reduction through the pads and rubber pads. , The effect of vibration reduction and noise reduction is poor, and the noise easily affects the surrounding environment and passengers.

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, and substitutions can be made in these embodiments without departing from the principle and spirit of the invention and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (10)

1. A subway track pad assembly with vibration and noise reduction function, comprising a lower track pad (1), a clamping assembly (2), and an upper track pad (3), characterized in that the lower track pad The plate (1) is provided with a plurality of square grooves (5) and sliding grooves (8), each groove (5) is provided with an arc-shaped elastic piece (6), and the top of the arc-shaped elastic piece (6) is fixedly connected to the The bottom of the backing plate (3) on the track, the bottom of the backing plate (3) on the track is fixedly inlaid with two arc-shaped elastic pieces (7), and the second arc-shaped elastic sheet (7) is slidably connected in the chute (8) A noise-reducing sound-absorbing board (9) is connected to both sides of the top of the lower track pad (1), and a rubber pad (10) is fixedly connected to the top of the track upper pad (3). 2. A subway track backing plate assembly with vibration and noise reduction function according to claim 1, characterized in that, a plurality of bolts (4) are arranged in the inner cavity of the backing plate (3) on the rail, and each bolt (4) The bottom end penetrates the backing plate (3) on the track and is threadedly connected inside the square groove (5). 3. The subway track backing plate assembly with vibration and noise reduction function according to claim 2, wherein a friction ring (11) is fixedly connected to the bottom of the inner wall of the square groove (5), and the friction ring (11) is fixedly connected to the bottom of the inner wall of the square groove (5). The inner wall of the ring (11) is in contact with the surface of the bolt (4). 4. A subway track pad assembly with vibration and noise reduction function according to claim 1, characterized in that, four corners of the top of the lower track pad (1) are provided with positioning grooves (12), so The front and rear ends of both sides of the backing plate (3) on the track are fixedly connected with a positioning plate (13) that is slidably connected with the positioning groove (12). 5. A subway track backing plate assembly with vibration and noise reduction function according to claim 1, wherein a spring (14) is fixedly connected to the bottom of the second arc-shaped elastic sheet (7), and the spring The bottom end of (14) is fixedly connected inside the chute (8). 6 . The subway track backing plate assembly with vibration and noise reduction function according to claim 1 , wherein a rubber gasket ( 15 ) is fixedly connected to the bottom of the backing plate ( 3 ) on the rail. 7 . 7 . The subway track backing plate assembly with vibration and noise reduction function according to claim 1 , wherein the upper rail backing plate ( 3 ) is made of high-strength metal material. 8 . 8. A subway track backing plate assembly with vibration and noise reduction function according to claim 5, characterized in that the spring (14), the second arc shrapnel (7) and the arc shrapnel one (6) All are made of stainless steel. 9 . The subway track backing plate assembly with vibration and noise reduction functions according to claim 1 , wherein a corrosion-resistant cloth cover ( 16 ) is fixedly connected to the bottom of the backing plate ( 3 ) on the track. 10 . 10. The subway track backing plate assembly with vibration and noise reduction function according to claim 9, wherein the bottom of the corrosion-resistant cloth cover (16) is fixedly connected to the bottom of the rail lower backing plate (1). top.

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