Steel rail vibration and noise reduction system for urban rail transit

Abstract

The invention belongs to the technical field of rail transit, and particularly discloses a steel rail vibration and noise reduction system for urban rail transit, which comprises a steel rail laid at the top of a sleeper and used for realizing the movement of a subway; the reinforcing component comprises a pressing plate placed on the top of the sleeper and used for supporting the steel rail; the connecting part is mounted on the pressing plate and used for limiting a steel rail at the top of the pressing plate; the pressing strip is fixed to the bottom face of the steel rail, and the vertically-fluctuating steel rail controls the two pressing plates to be close to or away from each other through the pressing strip; and the vibration reduction part is placed on the top of the sleeper and used for achieving vibration reduction treatment on the steel rail in the up-down fluctuation process of the steel rail. When the steel rail fluctuates up and down through the running bullet train, the steel rail fluctuating up and down controls the two pressing plates to be close to or far away from each other through the pressing strips, the two pressing plates close to each other limit the steel rail through the side plates, the stability of the steel rail on the top of the sleeper is improved, and the pressing plates far away from each other avoid the vibrating steel rail rapid vibration side plates. The vibration damage of the side plate is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of rail transportation, and in particular relates to a rail vibration and noise reduction system for urban rail transportation. Background Art

[0002] While urban rail transit brings convenience to people, wheel-rail coupling vibration also causes vibration and noise pollution to surrounding buildings. Prior art, for example, Chinese patent publication number CN214383866U discloses a rail vibration-damping fastener. This device, designed with elastic fasteners at both ends, acts as a track fastener. This device not only secures the track but also provides a vibration-damping effect, reducing noise generated by the track. Furthermore, the greater the load, the tighter the fastening force, improving the secure installation of the track. However, over time, the fastener's fixing bolts gradually loosen, reducing the effectiveness of the fastening plate, impacting the rail's support. Summary of the Invention

[0003] In response to the above problems, the present invention provides a rail vibration and noise reduction system for urban rail transit to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions: A rail vibration and noise reduction system for urban rail transit, comprising: a rail laid on the top of the sleeper for realizing the movement of the subway; a reinforcement component comprising: a pressure plate placed on the top of the sleeper for supporting the rail; a connecting component installed on the pressure plate for limiting the rail on the top of the pressure plate; a pressure strip fixed to the bottom surface of the rail, and the rail fluctuating up and down controls the two pressure plates to move closer to or away from each other through the pressure strip; two side plates are provided on the outer side of the top surface of the pressure plate, and the pressure plate is provided with a pushing component corresponding to the pressure strip, and the pushing component comprises: an inner pressure strip, an outer pressure strip, a connecting rod and an elastic component, the downward-moving pressure strip causes the inclined surface to slide on the first inclined surface, at this time the inner pressure strip uses the connecting rod to pull the outer pressure strip to squeeze the pressure plate, and the outer pressure strip pulls the side plates of the pressure plate close to the rail; the vibration reduction component is placed on the top of the sleeper to achieve vibration reduction treatment of the rail during the up and down fluctuation of the rail.

[0005] Furthermore, the connecting component includes: a rotating plate, which is rotatably installed on the top surface of the pressure plate and cooperates with the bolt component to achieve the limitation of the rail; and a cross bar, which is used to realize the rotation and movement of the rotating plate.

[0006] Furthermore, the pressure plate is provided with a pushing component corresponding to the pressure strip, and the pushing component includes: an inner pressure strip, a pressure strip that moves in the vertical direction so that the inner pressure strip approaches or moves away from the pressure plate; an outer pressure strip, which is connected to the inner pressure strip by a connecting rod, and is limited by the pressure strip that moves in the vertical direction so that the inner pressure strip moves back and forth in the horizontal direction.

[0007] Furthermore, under the elastic force of the first elastic member, the elastic member is allowed to reciprocate in the horizontal direction through the collar.

[0008] Furthermore, an inner groove adapted for horizontal movement of the sleeve is provided inside the pressure plate, thereby providing movement space for the sleeve.

[0009] Furthermore, the vibration reduction component includes: a buffer frame, which provides a vertical vibration reduction effect for the rail under the elastic support of the second elastic member; a sleeve frame, which is slidably sleeved on the outer side of the buffer frame; Furthermore, the sleeper is provided with a slide groove for facilitating the movement of the sleeve, and the inner pressure strip that moves back and forth in the horizontal direction pushes the sleeve to move through the buffer frame.

[0010] Furthermore, an inner rod for limiting the sleeve is provided inside the slide groove, and the two sleeves can be moved closer to or farther away from each other under the cooperation of the elastic force of the third elastic member and the inner pressure strip.

[0011] Technical effects and advantages of the present invention: 1. When the running train causes the rails to fluctuate up and down, the fluctuating rails control the two pressure plates to move closer to or farther away from each other through the pressure strips. The two pressure plates that are close to each other use the side plates to limit the rails, thereby improving the stability of the rails on the top of the sleepers. The pressure plates that are farther away from each other prevent the vibrating rails from quickly vibrating the side plates, thereby reducing vibration damage to the side plates.

[0012] 2. The present invention causes the rails to fluctuate up and down due to the running subway, and the downward-moving rails squeeze the buffer frame. Under the action of the impact force, the buffer frame causes the semicircular rod to move downward at the center of the sleeve, and the buffer frame and the sleeve cooperate to squeeze the second elastic member. When the rails move upward, the elastic force of the second elastic member makes the top surface of the buffer frame always fit with the bottom surface of the rails. The elastic force of the second elastic member provides a vertical vibration reduction effect for the rails, thereby reducing the noise generated by the rails by vibration reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 1. This is an overall schematic diagram of a rail vibration and noise reduction system for urban rail transit according to an embodiment of the present invention; Figure 2 1 is an overall schematic diagram of a rail according to an embodiment of the present invention; Figure 3 Schematic diagram of placing a pressure plate on the top of a sleeper according to an embodiment of the present invention; Figure 4 1 is an overall schematic diagram of a pressing plate according to an embodiment of the present invention; Figure 5 Schematic diagram of the inner end of the connecting rod connected to the inner pressure strip according to an embodiment of the present invention; Figure 6 is a schematic perspective cross-sectional view of a pressure plate according to an embodiment of the present invention; Figure 7 is an overall schematic diagram of a collar according to an embodiment of the present invention; Figure 8 2. It is a schematic diagram of a buffer frame penetrating a sleeve frame according to an embodiment of the present invention; In the figure: 1. rail; 101. rail bottom; 102. screw; 103. nut; 104. side plate; 2. sleeper; 3. pressure plate; 301. side plate; 4. pressure strip; 401. inclined surface; 5. rotating plate; 6. cross bar; 7. inner pressure strip; 701. first inclined surface; 702. second inclined surface; 8. outer pressure strip; 9. connecting rod; 10. collar; 11. first elastic member; 12. inner groove; 121. limiting rod; 13. second elastic member; 14. sleeve; 141. semicircular rod; 142. circular plate; 15. slide groove; 16. inner rod; 17. third elastic member. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0015] The present invention provides a rail vibration and noise reduction system for urban rail transit, such as Figures 1 to 5 As shown, it includes: a rail 1, two rails 1 are arranged in parallel and side by side, and both rails 1 are installed on the top of the sleeper 2 through reinforcement components. The rail 1 includes a rail bar, a rail waist and a rail bottom 101. The rail waist is between the rail bar and the rail bottom 101. The width of the rail bottom 101 is greater than the width of the rail bar. When the subway moves on the top surface of the rail bar of the rail 1 through the wheels, the rail 1 is limited by the reinforcement components.

[0016] Among them, the reinforcing parts include: a pressure plate 3, a connecting part, a pressure strip 4 and a shock-absorbing part. The pressure plate 3 is set as a strip plate with a rectangular structure. Two pressure plates 3 are set as a group. A group of pressure plates 3 are placed side by side at the bottom of a single rail 1, and the bottom surface of the rail bottom 101 of the rail 1 is in contact with the top surface of the pressure plate 3. The two pressure plates 3 on the top of the sleeper 2 cooperate to support the rail 1. Two parallel pressure strips 4 are installed on the bottom surface of the rail 1. The cross-sectional structure of the pressure strip 4 is set as an inverted right-angled trapezoid. The two pressure strips 4 are arranged opposite to each other, and the inner side surface of the pressure strip 4 is set as an inclined surface 401. The distance between the two inclined surfaces 401 increases from top to bottom.

[0017] In this embodiment, the distance between the two pressing plates 3 is adjusted according to the width of the rail bottom 101 until the rail 1 is placed on top of the pressing plate 3, and the connecting parts are used to connect the pressing plate 3 and the rail 1. Figures 1 to 4In the figure, the connecting parts include: a rotating plate 5, a spiral part and a cross bar 6. Two side plates 301 are provided on the outer side of the top surface of the pressure plate 3. Two rotating plates 5 are provided on the top of the pressure plate 3. The two rotating plates 5 correspond to the two side plates 301 one by one. The top of the side plate 301 and the bottom end of the rotating plate 5 are penetrated by the cross bar 6. The bottom end of the rotating plate 5 is sleeved on the surface of the cross bar 6. When the bottom end of the rotating plate 5 rotates on the surface of the cross bar 6, the rotating plate 5 can also move on the surface of the cross bar 6.

[0018] Since the spiral component cooperates with the rotating plate 5 to limit the rail 1, the spiral component includes a screw 102 and a nut 103. The bottom end of the screw 102 is fixed to the top surface of the sleeper 2, and the nut 103 is screwed onto the top of the screw 102. The surfaces of the pressure plate 3, the rail bottom 101 and the rotating plate 5 are all provided with mounting grooves corresponding to the screw 102. The pressure plate 3 is placed on the top surface of the sleeper 2 through the mounting groove. When the rail 1 is placed on the top surface of the pressure plate 3, the screw 102 penetrates the mounting groove of the rail bottom 101 until the bottom surface of the rail 1 is aligned with the top surface of the pressure plate 3, pushing the rotating plate 5 to move on the surface of the crossbar 6 until the mounting groove on the surface of the rotating plate 5 corresponds to the screw 102. The rotating plate 5 is rotated until the bottom surface of the rotating plate 5 is aligned with the top surface of the rail bottom 101. The nut 103 is screwed onto the top of the screw 102 until the bottom surface of the nut 103 is aligned with the top surface of the rotating plate 5. The rail 1 is limited by the spiral component.

[0019] When the subway runs on the top of the rail 1, the running subway causes the rail 1 to fluctuate up and down on the top of the sleeper 2. The fluctuating rail 1 cooperates with the pushing component through the pressure strip 4 to realize the two pressure plates 3 approaching or moving away from each other. Figures 2 to 5 In the figure, the pushing component includes: an inner pressure strip 7, an outer pressure strip 8, a connecting rod 9 and an elastic component. The outer pressure strip 8 is located on the outer side of the pressure plate 3. Both ends of the inner side surface of the outer pressure strip 8 are connected to the inner pressure strip 7 by connecting rods 9. The two inner pressure strips 7 are arranged opposite to each other, and the two inner pressure strips 7 do not contact each other. At this time, the bottom of a single pressure strip 4 corresponds to two inner pressure strips 7. The outer side surface of the inner pressure strip 7 is provided with a first inclined surface 701, and the inclined surface 401 of the pressure strip 4 corresponds to the first inclined surface 701.

[0020] When the rail 1 causes the pressure strip 4 to move downward, the pressure strip 4 uses the inclined surface 401 to move downward on the surface of the first inclined surface 701. At this time, the inclined surface 401 and the first inclined surface 701 are dislocated and moved. The downward-moving pressure strip 4 causes the inner pressure strip 7 to move away from the pressure plate 3. The inward-moving inner pressure strip 7 uses the connecting rod 9 to pull the outer pressure strip 8 close to the pressure plate 3. The moving connecting rod 9 squeezes the elastic component until the inner side surface of the outer pressure strip 8 is in contact with the outer side surface of the pressure plate 3. The inward-moving outer pressure strip 8 pushes the pressure plate 3 to move. The pressure plate 3 uses the placement groove to move on the surface of the screw 102 until the inner side surface of the side plate 301 is in contact with the side edge of the rail bottom 101. Under the dislocated movement of the pressure strip 4 and the inner pressure strip 7, the pressure plate 3 uses the side plate 301 to squeeze the side surface of the rail bottom 101, thereby improving the stability of the rail 1 on the top of the sleeper 2.

[0021] In this embodiment, the horizontal movement of the inner pressure strip 7 is achieved by the elastic component. Figure 3 、 Figure 6 and Figure 7 In the figure, the elastic component includes: a ring 10, a first elastic member 11 and an inner groove 12. The first elastic member 11 is set as a spring. The inner groove 12 adapted to the horizontal movement of the ring 10 is opened inside the pressure plate 3. The connecting rod 9 passes through the center of the inner groove 12. At this time, the ring 10 is spirally sleeved on the surface of the connecting rod 9, and two parallel limiting rods 121 are provided inside the inner groove 12. Side plates 104 are fixed on both sides of the ring 10. The two side plates 104 correspond one-to-one to the two limiting rods 121. The limiting rod 121 passes through the center of the side plate 104. The inner end of the first elastic member 11 is connected to the outer side of the side plate 104, the outer end of the first elastic member 11 is connected to the outer part of the inner groove 12, and the first elastic member 11 is sleeved on the surface of the limiting rod 121.

[0022] When the pressure strip 4 moves downward on the surface of the first inclined surface 701 using the inclined surface 401, the pressure of the inclined surface 401 on the first inclined surface 701 makes the inner pressure strip 7 move away from the pressure plate 3, and the inner pressure strip 7 uses the connecting rod 9 to pull the ring 10 to move inside the inner groove 12. At this time, the side plate 104 slides on the surface of the limiting rod 121 while pulling the first elastic member 11 until the inner side surface of the outer pressure strip 8 is in contact with the outer side surface of the pressure plate 3; the pressure strip 4 moves away from the inner pressure strip 7, and the elastic force of the first elastic member 11 uses the ring 10 to make the connecting rod 9 pull the inner pressure strip 7 close to the pressure plate 3. Under the limitation of the pressure strip 4 moving in the vertical direction, the inner pressure strip 7 moves back and forth in the horizontal direction.

[0023] When the subway runs on the rail 1, the vibration-damping components are used to buffer the up and down fluctuations of the rail 1. Figure 1 、 Figure 3 and Figure 8 In the embodiment, the vibration reduction component includes: a buffer frame, a second elastic member 13, a sleeve 14 and a slide 15. The second elastic member 13 is set as a spring. The sleeve 14 is vertically inserted into the slide 15. The buffer frame vertically passes through the sleeve 14. The buffer frame includes two opposite semicircular rods 141. The top and bottom ends of the two semicircular rods 141 are fixed with circular plates 142. The semicircular rods 141 pass through the sleeve 14. The top of the second elastic member 13 is connected to the bottom surface of the top circular plate 142, and the bottom end of the second elastic member 13 is connected to the top surface of the sleeve 14. The elastic force of the second elastic member 13 makes the top surface of the buffer frame fit with the bottom surface of the rail 1.

[0024] When the running subway causes the rail 1 to fluctuate up and down, the downward-moving rail 1 squeezes the buffer frame. Under the action of the impact force, the buffer frame causes the semicircular rod 141 to move downward at the center of the sleeve 14, and the buffer frame and the sleeve 14 cooperate to squeeze the second elastic member 13. When the rail 1 moves upward, the elastic force of the second elastic member 13 makes the top surface of the buffer frame always fit with the bottom surface of the rail 1. The elastic force of the second elastic member 13 is used to provide a vertical vibration reduction effect for the rail 1, thereby reducing the noise generated by the rail 1 by vibration reduction.

[0025] In this embodiment, when the downward moving rail 1 causes the inner pressure strip 7 to move away from the pressure plate 3, the inner pressure strip 7 pushes the vibration damping component to move inside the slide groove 15. An inner rod 16 that limits the sleeve 14 is provided inside the slide groove 15. A third elastic member 17 is sleeved on the surface of the inner rod 16. The third elastic member 17 is set as a spring. The two sleeves 14 are connected by the third elastic member 17. The elastic force of the third elastic member 17 makes the sleeve 14 be at the end of the slide groove 15. A second inclined surface 702 is provided at the inner end of the inner pressure strip 7, and the outer side surface of the circumference of the semicircular rod 141 is in contact with the second inclined surface 702 of the inner pressure strip 7.

[0026] When the inner bead 7 moves away from the pressure plate 3, the moving inner bead 7 slides on the surface of the semicircular rod 141 using the second inclined surface 702. Under the push of the inner bead 7, the semicircular rod 141 drives the sleeve 14 to move inside the slide 15. At this time, the two sleeves 14 approach each other and cooperate to squeeze the third elastic member 17, using the third elastic member 17 to further absorb the vibration of the rail 1. When the rail 1 drives the bead 4 away from the inner bead 7, the third elastic member 17 drives the two sleeves 14 away from each other. Under the cooperation of the semicircular rod 141 and the second inclined surface 702, the moving sleeve 14 drives the inner bead 7 closer to the pressure plate 3 until the outer side of the inner bead 7 is in contact with the pressure plate 3. The elastic force of the third elastic member 17 causes the pressure plate 3 to move, and the two pressure plates 3 now move away from each other.

[0027] When the rail 1 moves upward, the rail 1 drives the pressure strip 4 away from the inner pressure strip 7. The elastic force of the elastic component uses the connecting rod 9 to make the inner pressure strip 7 close to the pressure plate 3. The elastic force of the third elastic component 17 makes the pressure plate 3 move. At this time, the two pressure plates 3 move away from each other, and the side plate 301 moves away from the rail 1.

[0028] When the running train causes the rail 1 to fluctuate up and down, the fluctuating rail 1 controls the two pressure plates 3 to move closer to or farther away from each other through the pressure strip 4. The two pressure plates 3 that are close to each other both use the side plates 301 to limit the rail 1, and the pressure plates 3 that are farther away from each other prevent the vibrating rail 1 from vibrating the side plates 301 quickly, thereby reducing vibration damage to the side plates 301.

[0029] Working principle of the present invention: Reference Figures 1 to 8As shown, the distance between the two pressure plates 3 is adjusted according to the width of the rail bottom 101, until the rail 1 is placed on the top of the pressure plate 3, until the bottom surface of the rail 1 is in contact with the top surface of the pressure plate 3, push the rotating plate 5 to move on the surface of the cross bar 6, until the mounting groove on the surface of the rotating plate 5 corresponds to the screw 102, rotate the rotating plate 5 until the bottom surface of the rotating plate 5 is in contact with the top surface of the rail bottom 101, screw the nut 103 onto the top of the screw 102, until the bottom surface of the nut 103 is in contact with the top surface of the rotating plate 5, and the rail 1 is restricted by the spiral component.

[0030] When the rail 1 causes the pressure strip 4 to move downward, the pressure strip 4 uses the inclined surface 401 to move downward on the surface of the first inclined surface 701. At this time, the inclined surface 401 and the first inclined surface 701 are dislocated and moved. The downward-moving pressure strip 4 causes the inner pressure strip 7 to move away from the pressure plate 3. The inward-moving inner pressure strip 7 uses the connecting rod 9 to pull the outer pressure strip 8 close to the pressure plate 3. The moving connecting rod 9 squeezes the elastic component until the inner side surface of the outer pressure strip 8 is in contact with the outer side surface of the pressure plate 3. The inward-moving outer pressure strip 8 pushes the pressure plate 3 to move. The pressure plate 3 uses the placement groove to move on the surface of the screw 102 until the inner side surface of the side plate 301 is in contact with the side edge of the rail bottom 101. Under the dislocated movement of the pressure strip 4 and the inner pressure strip 7, the pressure plate 3 uses the side plate 301 to squeeze the side surface of the rail bottom 101, thereby improving the stability of the rail 1 on the top of the sleeper 2.

[0031] When the rail 1 moves upward, the rail 1 drives the pressure strip 4 away from the inner pressure strip 7. The elastic force of the elastic component uses the connecting rod 9 to make the inner pressure strip 7 approach the pressure plate 3. The elastic force of the third elastic member 17 causes the pressure plate 3 to move. At this time, the two pressure plates 3 are separated from each other. At this time, the side plate 301 is separated from the rail 1. When the running train causes the rail 1 to fluctuate up and down, the fluctuating rail 1 controls the two pressure plates 3 to move closer or further away from each other through the pressure strip 4. The two pressure plates 3 that are close to each other use the side plates 301 to limit the rail 1. The pressure plates 3 that are separated from each other prevent the vibrating rail 1 from quickly vibrating the side plates 301, thereby reducing vibration damage to the side plates 301.

[0032] When the pressure strip 4 moves downward on the surface of the first inclined surface 701 using the inclined surface 401, the pressure of the inclined surface 401 on the first inclined surface 701 makes the inner pressure strip 7 move away from the pressure plate 3, and the inner pressure strip 7 uses the connecting rod 9 to pull the ring 10 to move inside the inner groove 12. At this time, the side plate 104 slides on the surface of the limiting rod 121 while pulling the first elastic member 11 until the inner side surface of the outer pressure strip 8 is in contact with the outer side surface of the pressure plate 3; the pressure strip 4 moves away from the inner pressure strip 7, and the elastic force of the first elastic member 11 uses the ring 10 to make the connecting rod 9 pull the inner pressure strip 7 close to the pressure plate 3, and under the limitation of the pressure strip 4 moving in the vertical direction, the inner pressure strip 7 moves back and forth in the horizontal direction.

[0033] When the running subway causes the rail 1 to fluctuate up and down, the downward-moving rail 1 squeezes the buffer frame. Under the action of the impact force, the buffer frame causes the semicircular rod 141 to move downward at the center of the sleeve 14, and the buffer frame and the sleeve 14 cooperate to squeeze the second elastic member 13. When the rail 1 moves upward, the elastic force of the second elastic member 13 makes the top surface of the buffer frame always fit with the bottom surface of the rail 1, and the elastic force of the second elastic member 13 is used to provide a vertical vibration reduction effect for the rail 1.

[0034] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same.

Claims

1. A rail vibration and noise reduction system for urban rail transit, characterized in that: include: sleepers (2); Rails (1) are laid on top of sleepers (2) to enable the movement of the subway; A reinforcement component, including a pressure plate (3), is placed on top of the sleeper (2) to support the rail (1); A connecting component, mounted on the pressing plate (3), for limiting the steel rail (1) on the top of the pressing plate (3); A pressure strip (4) is fixed on the bottom surface of the rail (1), and the rail (1) fluctuates up and down, and controls the two pressure plates (3) to move closer to or farther away from each other through the pressure strip (4); two side plates (301) are provided on the outer side of the top surface of the pressure plate (3); a pushing component corresponding to the pressure strip (4) is provided on the pressure plate (3), and the pushing component includes an inner pressure strip (7), an outer pressure strip (8) and a connecting rod (9); the downward moving pressure strip (4) causes its own inclined surface (401) to slide on the first inclined surface (701) of the inner pressure strip (7), and at this time, the inner pressure strip (7) uses the connecting rod (9) to pull the outer pressure strip (8) to squeeze the pressure plate (3), and the outer pressure strip (8) pulls the side plates (301) of the pressure plate (3) to be close to the rail (1); A vibration-damping component is placed on the top of the sleeper (2) to achieve vibration-damping treatment of the rail (1) during the up and down fluctuation of the rail (1).

2. The rail vibration and noise reduction system for urban rail transit according to claim 1, characterized in that: The connecting component includes: A rotating plate (5) is rotatably mounted on the top surface of the pressure plate (3) and cooperates with the bolt component to achieve the restriction of the rail (1); The crossbar (6) is used to realize the rotation and movement of the rotating plate (5).

3. The rail vibration and noise reduction system for urban rail transit according to claim 1, characterized in that: The vertically moving pressure strip (4) causes the inner pressure strip (7) to move closer to or farther from the pressure plate (3); the outer pressure strip (8) is connected to the inner pressure strip (7) by means of the connecting rod (9); the pushing component further comprises an elastic component, which, under the restriction of the vertically moving pressure strip (4), causes the inner pressure strip (7) to move back and forth in the horizontal direction.

4. The rail vibration and noise reduction system for urban rail transit according to claim 3, characterized in that: Under the elastic force limitation of the first elastic member (11), the elastic member is enabled to achieve reciprocating movement in the horizontal direction through the collar (10).

5. The rail vibration and noise reduction system for urban rail transit according to claim 4, characterized in that: An inner groove 12 adapted for horizontal movement of the sleeve ring (10) is provided inside the pressing plate (3), providing movement space for the sleeve ring (10).

6. The rail vibration and noise reduction system for urban rail transit according to claim 3, characterized in that: The vibration damping component comprises: The buffer frame provides a vertical vibration reduction effect for the rail (1) under the elastic support of the second elastic member (13); The sleeve frame (14) is slidably sleeved on the outer side of the buffer frame.

7. The rail vibration and noise reduction system for urban rail transit according to claim 6, characterized in that: The rail sleeper (2) is provided with a slide groove (15) for facilitating the movement of the sleeve (14), and the inner pressure strip (7) that moves back and forth in the horizontal direction pushes the sleeve (14) to move through the buffer frame.

8. The rail vibration and noise reduction system for urban rail transit according to claim 7, characterized in that: An inner rod (16) for limiting the sleeve (14) is provided inside the slide groove (15), and the two sleeves (14) are moved closer to or farther away from each other under the cooperation of the elastic force of the third elastic member (17) and the inner pressure strip (7).

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