Subway track noise reduction and shock absorption equipment

Abstract

The utility model discloses a subway track noise reduction and shock absorption device which comprises a groove table, a pressure bearing table is fixedly installed at the top of a bottom plate of the groove table, noise reduction sponge is fixedly installed at the top of the pressure bearing table, a pressure bearing plate is arranged in the groove table and located above the noise reduction sponge, and the bottom of the pressure bearing plate is connected with the bottom plate of the groove table through a longitudinal shock absorption assembly. The sides, close to the groove table, of the fixing strips are connected through transverse damping assemblies. According to the noise reduction and shock absorption equipment for the subway track, the transverse shock absorption assembly is arranged to facilitate shock absorption and buffering of transverse pressure borne by the track body on the top of the fixing strip, and the clamping base, the movable rod, the sliding plate, the push rod and the second damping spring are arranged to facilitate buffering and shock absorption of transverse pressure borne by the connecting strip; the technical problems that in the prior art, although downward pressure of a subway on a rail can be reduced, a certain transverse fixing and damping effect on a rail body is lacked in the using process, and the damping effect is poor are solved.

Description

Technical Field

[0001] This utility model relates to the field of subway track technology, and in particular to a subway track noise reduction and vibration damping device. Background Technology

[0002] A subway is a type of urban rail transit system, referring to a high-speed, high-capacity, electrically powered rail transit system built in cities. Trains run on fully enclosed tracks; lines in the city center are primarily located in underground tunnels, while lines outside the city center are generally located on elevated bridges or at ground level. Subways are a high-density, high-capacity urban rail transit system encompassing various underground and above-ground right-of-way options in urban areas.

[0003] Patent application CN220704208U discloses a vibration damping and noise reduction device for subway tracks, relating to the field of subway track technology. The device features mounting grooves on the inner walls of both sides of the bottom of a recessed platform. Sound insulation panels are installed within these grooves. A pressure plate is positioned at the top of the groove opening, and track bodies are mounted on both sides of the top of the pressure plate. A pressure platform is fixedly installed at the bottom of the inner wall of the recessed platform, and noise-reducing sponges are installed on top of the pressure platform. The tops of the noise-reducing sponges are connected to the bottom of the pressure plate. A telescopic vibration damping component is fixedly installed at the bottom of the recessed platform, and a supporting vibration damping component is fixedly installed on one side of the telescopic vibration damping component. A linkage component is installed between the telescopic vibration damping component and the supporting vibration damping component, linking them together. Since a pressure spring is connected to the movable shaft, with its two ends connected to upper and lower support columns, vibrations are further transmitted to the pressure spring, achieving a vibration damping effect through the compression of the spring.

[0004] While the aforementioned technologies can reduce the downward pressure exerted on the subway tracks, they lack the ability to provide lateral fixation and vibration damping for the main track structure, resulting in poor vibration reduction. To address these issues, we have developed a subway track noise reduction and vibration damping device. Utility Model Content

[0005] This utility model discloses a noise reduction and vibration damping device for subway tracks, aiming to solve the technical problem that although related technologies can reduce the downward pressure of subway tracks, they lack the ability to provide lateral fixation and vibration damping for the main track body during use, resulting in poor vibration reduction effect.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A noise reduction and vibration damping device for subway tracks includes a recessed platform. A pressure-bearing platform is fixedly installed on the top of the base plate of the recessed platform. Noise-reducing foam is fixedly installed on the top of the pressure-bearing platform. A pressure plate is disposed inside the recessed platform and above the noise-reducing foam. Fixing strips are symmetrically fixedly installed on the top of the pressure plate. A track body is disposed on the top of each fixing strip. The bottom of the pressure plate and the base plate of the recessed platform are connected by a longitudinal vibration damping component. The side of the fixing strips near the recessed platform is connected by a transverse vibration damping component. The transverse vibration damping component includes a connecting strip, which is fixedly installed on the side of the fixing strips near the recessed platform. Movable grooves are formed on both sides of the recessed platform near the fixing strips. A fixing sleeve is fixedly installed at equal intervals on the side of the groove near the fixing strip. A sliding plate is slidably connected inside the fixing sleeve. A movable rod is fixedly installed through the side of the pressure plate transverse shock absorption component near the fixing strip. A retainer is fixedly installed on the side of the movable rod near the connecting strip. The retainer engages with the connecting strip near the connecting strip. A clearance groove is provided at equal intervals on the side of the groove near the fixing sleeve. A push rod is fixedly installed on the side of the sliding plate near the clearance groove. The push rod extends into the clearance groove and is slidably connected to the clearance groove on the side near the clearance groove. A second damping spring is sleeved on the outside of the push rod. The two ends of the second damping spring are fixedly connected to the inner wall of the sliding plate and the connecting strip, respectively.

[0008] By incorporating lateral damping components, the lateral pressure on the top track body of the fixed strip is effectively damped and buffered. The included mounting bracket, movable rod, sliding plate, push rod, and second damping spring further buffer and dampen the lateral pressure on the connecting strip. The included clearance groove facilitates the sliding movement of the push rod, and the noise-reducing sponge helps reduce noise from the subway passing over the track. This addresses the technical problem that while related technologies can dampen the downward pressure exerted on the track by the subway, they lack the ability to provide lateral fixation and shock absorption for the track body during use, resulting in poor damping performance.

[0009] In a preferred embodiment, the longitudinal damping assembly includes a pressure sleeve, which is symmetrically and equidistantly fixedly installed at the bottom of the pressure plate. A base is fixedly installed on the top of the grooved base plate near the pressure sleeve. A slide rod is fixedly installed on the top of the base. The top end of the slide rod extends into the inside of the pressure sleeve and is slidably connected to the pressure sleeve. A first damping spring is sleeved on the outer side of the slide rod. The top and bottom ends of the first damping spring are fixedly connected to the pressure sleeve and the base, respectively.

[0010] The installation of a pressure sleeve, base, slide bar, and No. 1 damping spring helps to initially reduce the pressure on the pressure plate and also helps to reduce the longitudinal pressure on the pressure plate.

[0011] In a preferred embodiment, fixing boxes are symmetrically and fixedly installed at the top of the groove table bottom plate and on both sides of the base. A sliding groove is provided on one side near the top inside each fixing box. A slider is slidably connected inside the sliding groove. A connecting rod is connected between the top of the slider and the pressure-bearing sleeve. Fixing rods are fixedly installed inside each sliding groove. The fixing rods penetrate through the sliders and are slidably connected to the sliders. A decompression spring is sleeved outside the fixing rods. Two ends of the decompression spring are respectively fixedly connected to the slider and one inner wall side of the sliding groove.

[0012] By setting the cooperation among the fixing box, the sliding groove, the slider, the connecting rod, the fixing rod and the decompression spring, it is beneficial that when the pressure-bearing sleeve moves downward, the two sliders are pushed by the connecting rods on both sides to move away from the base inside the sliding grooves. The fixing rod and the decompression spring are beneficial to enhancing the shock absorption effect.

[0013] In a preferred embodiment, a limiting groove is provided at the bottom of the sliding groove inside the fixing box. A limiting plate is slidably connected inside the limiting groove. One side of the limiting plate close to the slider is fixedly connected to the slider.

[0014] By setting the limiting groove and the limiting plate, it is beneficial to enhancing the sliding stability of the slider inside the sliding groove, making the use more stable.

[0015] In a preferred embodiment, support blocks are symmetrically and fixedly installed at the bottom of the bearing plate and on both sides of the pressure-bearing sleeve. The support blocks are arranged in a triangular structure.

[0016] By setting the support blocks, it is beneficial to enhancing the support for the bearing plate, and the triangular structure makes the use more stable.

[0017] In a preferred embodiment, mounting grooves are symmetrically provided on both sides of the inner wall of the groove table. Sound insulation boards are installed inside the mounting grooves.

[0018] By setting the sound insulation boards, it is beneficial to further reduce the noise generated by the subway passing through the track.

[0019] In a preferred embodiment, the movable rod is slidably connected to the fixed sleeve. The card seat is arranged in a structure similar to a "U" shape. One side of the card seat close to the connecting strip wraps around the outside of the connecting strip and fits with the outer wall of the connecting strip.

[0020] By setting the card seat and the connecting strip to fit with each other, it is beneficial to supporting the connecting strip more stably.

[0021] The subway track noise reduction and shock absorption device provided by the present utility model has the following advantages:

[0022] Firstly, the lateral damping components help to buffer the lateral pressure on the top of the track body of the fixed bar. The mounting bracket, movable rod, sliding plate, push rod, and No. 2 damping spring help to buffer and dampen the lateral pressure on the connecting bar. The clearance groove facilitates the sliding movement of the push rod. The noise-reducing sponge helps to reduce the noise of the subway passing over the track. This solves the technical problem that although related technologies can dampen the downward pressure of the subway on the track, they lack a certain lateral fixing and damping effect on the track body during use, resulting in poor damping effect. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of a noise reduction and vibration damping device for subway tracks proposed in this utility model.

[0024] Figure 2 This is a front view cross-sectional schematic diagram of a noise reduction and vibration damping device for subway tracks proposed in this utility model.

[0025] Figure 3 This is a side view sectional diagram of a noise reduction and vibration damping device for subway tracks proposed in this utility model.

[0026] Figure 4 for Figure 2 Enlarged view of point A in the middle.

[0027] Figure 5 for Figure 3 Enlarged view of point B in the middle.

[0028] In the attached diagram: 1. Groove platform; 11. Mounting groove; 2. Pressure bearing platform; 3. Noise-reducing sponge; 4. Pressure bearing plate; 5. Fixing strip; 6. Track body; 7. Longitudinal damping component; 71. Pressure bearing sleeve; 72. Base; 73. Slide rod; 74. Damping spring No. 1; 75. Fixing box; 76. Slide groove; 77. Slider; 78. Connecting rod; 79. Fixing rod; 710. Pressure-reducing spring; 711. Limiting plate; 712. Limiting groove; 713. Support block; 8. Lateral damping component; 81. Connecting strip; 82. Movable groove; 83. Fixing sleeve; 84. Slide plate; 85. Movable rod; 86. Card seat; 87. Push rod; 88. Clearance groove; 89. Damping spring No. 2; 9. Sound insulation board. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and marked in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0030] The noise reduction and vibration damping device for subway tracks disclosed in this utility model is mainly used in scenarios involving noise reduction and vibration damping of subway tracks.

[0031] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 A noise reduction and vibration damping device for subway tracks includes: a recessed platform 1, a pressure-bearing platform 2 fixedly installed on the top of the base plate of the recessed platform 1, a noise-reducing sponge 3 fixedly installed on the top of the pressure-bearing platform 2, a pressure plate 4 disposed inside the recessed platform 1 and above the noise-reducing sponge 3, fixing strips 5 symmetrically fixedly installed on the top of the pressure plate 4, and a track body 6 disposed on the top of each fixing strip 5, the bottom of the pressure plate 4 and the base plate of the recessed platform 1 are connected by a longitudinal vibration damping component 7, and the side of the fixing strips 5 near the recessed platform 1 is connected by a transverse vibration damping component 8; the transverse vibration damping component 8 includes a connecting strip 81, the connecting strip 81 is fixedly installed on the side of the fixing strip 5 near the recessed platform 1, and movable grooves 82 are opened on both sides of the recessed platform 1 near the fixing strips 5, the movable grooves 82 being respectively located on the side near the fixing strips 5. A fixed sleeve 83 is fixedly installed at equal intervals. A sliding plate 84 is slidably connected inside the fixed sleeve 83. A movable rod 85 is fixedly installed through the transverse shock-absorbing component 8 of the pressure plate 4 near the fixed strip 5. A card seat 86 is fixedly installed on the side of the movable rod 85 near the connecting strip 81. The card seat 86 is engaged with the connecting strip 81 near the connecting strip 81. An avoidance groove 88 is provided at equal intervals inside the groove platform 1 near the fixed sleeve 83. A push rod 87 is fixedly installed on the side of the sliding plate 84 near the avoidance groove 88. The side of the push rod 87 near the avoidance groove 88 extends into the avoidance groove 88 and is slidably connected to the avoidance groove 88. A second damping spring 89 is sleeved on the outside of the push rod 87. The two ends of the second damping spring 89 are fixedly connected to the inner wall of the sliding plate 84 and the connecting strip 81, respectively.

[0032] The groove platform (1) has symmetrically provided installation slots (11) on both sides of its inner wall, and a sound insulation board (9) is installed inside the installation slot (11); by setting the sound insulation board 9, it is beneficial to further reduce the noise generated by the subway passing through the track.

[0033] Among them, the movable rod (85) is slidably connected to the fixed sleeve (83), the clamping seat (86) is arranged in a structure similar to a "U" shape, and one side of the clamping seat (86) close to the connecting strip (81) is wrapped outside the connecting strip (81) and is in contact with the outer wall of the connecting strip (81); by setting the clamping seat 86 and the connecting strip 81 to be in contact with each other, it is beneficial to support the connecting strip 81 more stably.

[0034] In this embodiment: by setting the horizontal shock-absorbing component 8, it is beneficial to shock-absorb and buffer the horizontal pressure received by the top track body 6 of the fixed strip 5. By setting the clamping seat 86, the movable rod 85, the sliding plate 84, the push rod 87 and the second damping spring 89, it is beneficial to buffer and shock-absorb the horizontal pressure received by the connecting strip 81. The provided avoidance groove 88 is beneficial to cooperate with the sliding movement of the push rod 87. The provided noise reduction sponge 3 is beneficial to reduce the noise generated when the subway passes over the track; it solves the technical problem that although the related technology can shock-absorb the downward pressure of the subway on the track, but in use, it still lacks a certain lateral fixing and shock-absorbing effect on the track body, and the shock-absorbing effect is poor.

[0035] In the above technical solution, considering the problem of longitudinal shock-absorption of the track, to solve such problems, the specific operation is as follows:

[0036] Refer to Figure 3 and Figure 5 , in a preferred embodiment, the longitudinal shock-absorbing component 7 includes a pressure-bearing sleeve 71. The pressure-bearing sleeves 71 are symmetrically and equidistantly fixedly installed at the bottom of the bearing plate 4. A base 72 is fixedly installed at the top of the bottom plate of the groove table 1 and close to the pressure-bearing sleeve 71. A sliding rod 73 is fixedly installed at the top of the base 72. The top end of the sliding rod 73 extends into the pressure-bearing sleeve 71 and is slidably connected to the pressure-bearing sleeve 71. A first damping spring 74 is sleeved outside the sliding rod 73. The top end and the bottom end of the first damping spring 74 are respectively fixedly connected to the pressure-bearing sleeve 71 and the base 72;

[0037] Among them, fixed boxes 75 are symmetrically fixedly installed on the top of the base plate of the groove platform 1 and on both sides of the base 72. The fixed boxes 75 have a sliding groove 76 on the side near the top. The sliding slider 77 is slidably connected inside the sliding groove 76. The top of the slider 77 is connected to the pressure sleeve 71 by a connecting rod 78. The fixed rod 79 is fixedly installed inside the sliding groove 76. The fixed rod 79 passes through the slider 77 and is slidably connected to the slider 77. The pressure relief spring 710 is sleeved on the outside of the fixed rod 79. The two ends of the pressure relief spring 710 are fixedly connected to the slider 77 and the inner wall of one side of the sliding groove 76, respectively. By setting the cooperation between the fixed boxes 75, the sliding groove 76, the slider 77, the connecting rod 78, the fixed rod 79, and the pressure relief spring 710, it is beneficial to push the two sliders 77 in the sliding groove 76 to move away from the base 72 by the connecting rods 78 on both sides when the pressure sleeve 71 moves down. The fixed rod 79 and the pressure relief spring 710 help to enhance the shock absorption effect.

[0038] The fixed box 75 has a limiting groove 712 inside and at the bottom of the slide groove 76. A limiting plate 711 is slidably connected inside the limiting groove 712. The side of the limiting plate 711 closest to the slider 77 is fixedly connected to the slider 77. By setting the limiting groove 712 and the limiting plate 711, the stability of the slider 77 sliding inside the slide groove 76 is enhanced, making it more stable to use.

[0039] Among them, support blocks 713 are symmetrically fixedly installed at the bottom of the pressure plate 4 and on both sides of the pressure sleeve 71. The support blocks 713 are set as triangular structures. The support blocks 713 help to strengthen the support of the pressure plate 4, and the triangular structure is more stable.

[0040] In this embodiment, by setting up a pressure-bearing sleeve 71, a base 72, a slide rod 73, and a first damping spring 74, it is beneficial to initially reduce the pressure on the pressure plate 4 and to reduce the longitudinal pressure on the pressure plate 4.

[0041] Working principle: During use, the lateral shock absorption component 8 helps to dampen and buffer the lateral pressure on the top track body 6 of the fixed strip 5. The card seat 86, movable rod 85, sliding plate 84, push rod 87, and second damping spring 89 help to buffer and dampen the lateral pressure on the connecting strip 81. The clearance groove 88 facilitates the sliding movement of the push rod 87. The noise reduction sponge 3 helps to reduce the noise of the subway passing on the track. The pressure-bearing sleeve 71 and base 72... The slide bar 73 and the first damping spring 74 are beneficial for the initial damping of the pressure on the pressure plate 4 and for the damping of the longitudinal pressure on the pressure plate 4. By setting the cooperation between the fixed box 75, the slide groove 76, the slider 77, the connecting rod 78, the fixed rod 79 and the pressure relief spring 710, it is beneficial for the two sliders 77 to move away from the base 72 inside the slide groove 76 through the connecting rods 78 on both sides when the pressure sleeve 71 moves down. The fixed rod 79 and the pressure relief spring 710 help to enhance the damping effect.

[0042] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. A noise reduction and vibration damping device for subway tracks, comprising a grooved platform (1), characterized in that, A pressure plate (2) is fixedly installed on the top of the base plate of the groove platform (1). A noise-reducing sponge (3) is fixedly installed on the top of the pressure plate (2). A pressure plate (4) is provided inside the groove platform (1) and above the noise-reducing sponge (3). A fixing strip (5) is symmetrically fixedly installed on the top of the pressure plate (4). A track body (6) is provided on the top of each fixing strip (5). The bottom of the pressure plate (4) and the base plate of the groove platform (1) are connected by a longitudinal shock-absorbing component (7). The side of the fixing strip (5) near the groove platform (1) is connected by a transverse shock-absorbing component (8). The transverse shock-absorbing component (8) includes a connecting strip (81). The connecting strip (81) is fixedly installed on the side of the fixing strip (5) near the groove platform (1). Movable grooves (82) are opened on both sides of the groove platform (1) near the fixing strip (5). Fixed sleeves are fixedly installed at equal intervals on the side of the movable groove (82) near the fixing strip (5). 83), a sliding plate (84) is slidably connected inside the fixed sleeve (83), a movable rod (85) is fixedly installed through the transverse shock absorption component (8) of the pressure plate (4) near the fixed strip (5), a card seat (86) is fixedly installed on the side of the movable rod (85) near the connecting strip (81), the card seat (86) is engaged with the connecting strip (81) near the connecting strip (81), and the side of the groove platform (1) near the fixed sleeve (83) The slide plate (84) is provided with equidistant clearance grooves (88). A push rod (87) is fixedly installed on the side of the slide plate (84) near the clearance groove (88). The push rod (87) extends into the clearance groove (88) and is slidably connected to the clearance groove (88) on the side near the clearance groove (88). A second damping spring (89) is sleeved on the outside of the push rod (87). The two ends of the second damping spring (89) are fixedly connected to the inner wall of the slide plate (84) and the connecting strip (81), respectively.

2. The noise reduction and vibration damping device for subway tracks according to claim 1, characterized in that, The longitudinal damping assembly (7) includes a pressure sleeve (71), which is symmetrically and equidistantly fixedly installed at the bottom of the pressure plate (4). A base (72) is fixedly installed on the top of the bottom plate of the groove platform (1) and close to the pressure sleeve (71). A slide rod (73) is fixedly installed on the top of the base (72). The top end of the slide rod (73) extends into the inside of the pressure sleeve (71) and is slidably connected to the pressure sleeve (71). A first damping spring (74) is sleeved on the outside of the slide rod (73). The top and bottom ends of the first damping spring (74) are fixedly connected to the pressure sleeve (71) and the base (72) respectively.

3. The noise reduction and vibration damping device for subway tracks according to claim 1, characterized in that, On the top of the bottom plate of the groove table (1) and symmetrically fixed on both sides of the base (72), there are fixed boxes (75). On one side near the top inside each of the fixed boxes (75), there is a chute (76). A slider (77) is slidably connected inside the chute (76). A connecting rod (78) is connected between the top of the slider (77) and the pressure-bearing sleeve (71). Fixed rods (79) are fixedly installed inside each of the chutes (76). The fixed rods (79) penetrate through the sliders (77) and are slidably connected to the sliders (77). A decompression spring (710) is sleeved on the outside of the fixed rods (79). Both ends of the decompression spring (710) are fixedly connected to the slider (77) and one inner wall of the chute (76) respectively.

4. The noise reduction and vibration damping device for subway tracks according to claim 3, characterized in that, Inside the fixed box (75) and at the bottom of the chute (76), there is a limit groove (712). A limit plate (711) is slidably connected inside the limit groove (712). One side of the limit plate (711) close to the slider (77) is fixedly connected to the slider (77).

5. A noise reduction and vibration damping device for subway tracks according to claim 2, characterized in that, On the bottom of the bearing plate (4) and symmetrically fixed on both sides of the pressure-bearing sleeve (71), there are support blocks (713). The support blocks (713) are arranged in a triangular structure.

6. The noise reduction and vibration damping device for subway tracks according to claim 1, characterized in that, On both sides of the inner wall of the groove table (1), there are symmetrically arranged installation grooves (11). Sound insulation boards (9) are installed inside the installation grooves (11).

7. The noise reduction and vibration damping device for subway tracks according to claim 1, characterized in that, The movable rod (85) is slidably connected to the fixed sleeve (83). The card seat (86) is arranged in a structure similar to a "凵" shape. One side of the card seat (86) close to the connecting strip (81) wraps around the outside of the connecting strip (81) and fits with the outer wall of the connecting strip (81).

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