Rail transit vibration and noise reduction device and use method

Abstract

The invention discloses a rail transit vibration reduction and noise reduction device and a use method, which belongs to the field of rail transit technology. The device comprises an arc-shaped sound insulation cylinder fixed on the inner wall of a tunnel for reducing vibration and noise of a track, a swing bearing is fixed on an arc support plate, a positive swing arm is hinged on the swing bearing, the lower end of the positive swing arm is connected to a positive vibration plate after extending out of the sound insulation cavity, the positive vibration plate is perpendicular to the longitudinal direction of the tunnel, the upper end of the positive swing arm is hinged to a guide rod through an end connecting rod, the middle part of the guide rod is slidably matched with a guide rod bearing fixed on the support plate, a first spring is connected between the guide rod and the guide rod bearing, the guide rod is connected to a special-shaped plate after extending out of the guide rod bearing, the surface of the special-shaped plate contacts a roller, the roller is rotatably connected to a core rod, a core rod coaxial sliding seal is arranged on the inner side of a damping cylinder, the damping cylinder is fixed on the support plate, a second spring is connected between the core rod and the damping cylinder, and a damping structure matched with a damping fluid is connected to the outer side of the core rod.

Description

Technical Field

[0001] The present invention belongs to the technical field of rail transit, and in particular relates to a rail transit vibration and noise reduction device and a use method thereof. Background Art

[0002] With the maturity of urban rail transit technology, urban rail transit has developed rapidly. When urban rail transit is in use, its vibration and noise have a great impact on the environment and residents' lives. The noise emitted by the subway mainly comes from wheel noise, vehicle equipment noise, aerodynamic noise and environmental factors. Since subway trains generally run in closed and narrow tunnels, the noise cannot be quickly transmitted or attenuated under such conditions, which greatly affects the riding experience of passengers and staff in the subway. Summary of the invention

[0003] In view of this, an object of the present invention is to provide a rail transit vibration reduction and noise reduction device and a method of use, which can be effectively used in the vibration reduction and noise reduction work of rail transit, with obvious noise reduction effect and low cost.

[0004] In order to achieve the above object, the present invention provides the following technical solutions:

[0005] The present invention discloses a rail transit vibration reduction and noise reduction device, comprising an arc-shaped sound insulation cylinder fixed on the inner wall of a tunnel for reducing vibration and noise of a track, a sound insulation cavity is formed on the inner side of the arc-shaped sound insulation cylinder, a vertical support plate is installed in the sound insulation cavity, a swing support is fixed on the support plate, a positive swing arm is hinged on the swing support, a positive vibration plate is connected to the lower end of the positive swing arm after extending out of the sound insulation cavity, the positive vibration plate is perpendicular to the longitudinal direction of the tunnel, the upper end of the positive swing arm is hinged to the guide rod through the end connecting rod, and the middle of the guide rod is hinged to the guide rod. The guide rod support is slidably matched with the support plate, a first spring is connected between the guide rod and the guide rod support, and a special-shaped plate is connected to the guide rod after extending out of the guide rod support. The surface of the special-shaped plate contacts the roller, and the roller is rotatably connected to the core rod. The core rod coaxial sliding seal is arranged on the inner side of the damping cylinder, and the damping cylinder is fixed on the support plate. A second spring is connected between the core rod and the damping cylinder, the damping cylinder is filled with damping fluid, and the outer side of the core rod is connected to a damping structure that cooperates with the damping fluid.

[0006] Furthermore, a forward piston is hingedly connected to the middle portion of the forward swing arm through a first middle connecting rod. The forward piston is slidably arranged in a piston cylinder fixed on a support plate. A damping component for reducing vibration of the forward piston is installed in the piston cylinder.

[0007] Furthermore, the damping component includes a reverse piston, which is arranged in a piston cylinder with a distance from the forward piston, a damping rod and a third spring are connected between the forward piston and the reverse piston, the reverse piston is connected to a reverse rocker arm through a second middle connecting rod, the reverse rocker arm is hinged to a rocking support fixed on a support plate, the lower end of the reverse rocker arm is connected to a reverse vibration plate, and the reverse vibration plate and the forward vibration plate are arranged in parallel and with a distance from each other on the inner side of the tunnel.

[0008] Furthermore, both ends of the damping rod are respectively provided with external threads with opposite rotation directions, and the end surfaces of the forward piston and the reverse piston are respectively provided with threaded holes corresponding to the two external threads.

[0009] Furthermore, the damping structure comprises an elastic spiral plate fixedly surrounding the outer side of the core rod, and the elastic spiral plate is provided with a damping hole.

[0010] Furthermore, a sound absorbing tube is detachably installed on the inner side of the arc-shaped sound insulation tube, two baffles are arranged in the sound absorbing tube at intervals, through holes are opened on the baffles, and a number of damping balls are installed between the two baffles.

[0011] Furthermore, a plurality of anchor rods are installed at the upper end of the arc-shaped sound insulation tube, and the arc-shaped sound insulation tube is fixed to the inner wall of the tunnel through the anchor rods.

[0012] Furthermore, a plurality of partitions are arranged at intervals in the arc-shaped sound insulation tube along the longitudinal direction thereof, and the partitions divide the sound insulation cavity into a plurality of staggered working cavities and vibration reduction cavities, and the vibration reduction cavity is filled with sound insulation cotton.

[0013] Furthermore, a window is provided on the inner side wall of the arc-shaped sound insulation cylinder, and the window is communicated with the working chamber.

[0014] A method for using a rail transit vibration reduction and noise reduction device, using any of the vibration reduction and noise reduction devices described above, first prefabricating an arcuate sound insulation tube and various vibration reduction components in a factory, fixing the arcuate sound insulation tube on the inner wall of a tunnel, sequentially installing various vibration reduction components at intervals along the longitudinal direction of the tunnel, burying the damping tube of the vibration reduction component into the inner wall of the tunnel, adjusting the position of a forward vibration plate to adapt it, and finally sealing the arcuate sound insulation tube to complete the installation of the vibration reduction and noise reduction device.

[0015] The beneficial effects of the present invention are:

[0016] The present invention discloses a rail transit vibration and noise reduction device. When the device is in operation, the noise generated by the rail transit causes air vibration, and the air drives the positive vibration plate on the top of the tunnel to swing. The back-and-forth swing of the positive vibration plate can cause the positive swing arm to swing. The positive swing arm drives the guide rod to move via the end connecting rod. After the guide rod is displaced, the special-shaped plate can drive the core rod to move up and down. After the core rod is displaced, the damping structure can be displaced in the damping cylinder. After the damping structure is displaced relative to the damping liquid, the damping liquid generates a damping force to hinder the movement of the damping structure. Moreover, the force of the air vibration can be converted into the internal energy of the damping liquid to achieve the effect of vibration reduction and noise reduction.

[0017] In the device disclosed in the present invention, since the entire moving structure is hidden in the arc-shaped sound insulation tube fixed on the top of the tunnel, it is convenient for inspection and maintenance, thereby ensuring the normal operation and service life of the device.

[0018] In the device disclosed in the present invention, the size of the forward vibration plate can be installed as needed. By installing the forward vibration plate, the forward vibration plate is located in a plane parallel to the cross section of the tunnel. Compared with the traditional method of installing a sound-absorbing structure on the inner wall, a larger area of ​​air vibration in the rail transit tunnel can be absorbed, so it has better vibration reduction and noise reduction capabilities. The forward vibration plate can absorb noise positively, thereby reducing the noise transmission of rail transit.

[0019] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art may be taught from the practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0021] Figure 1 It is a structural schematic diagram of the device of the present invention;

[0022] Figure 2 The structure of the arc-shaped sound insulation tube of the present invention is schematically shown. Figure 1 ;

[0023] Figure 3 The structure of the arc-shaped sound insulation tube of the present invention is schematically shown. Figure 2 ;

[0024] Figure 4 for Figure 2 A magnified view at point A;

[0025] Figure 5 It is the connection diagram of the forward swing rod;

[0026] Figure 6 It is the connection diagram of the reverse swing rod;

[0027] Figure 7 is a schematic diagram of the structure of an elastic spiral plate;

[0028] Figure 8 This is a schematic diagram of the structure of the sound-absorbing tube.

[0029] The markings in the accompanying drawings are as follows: tunnel 1, arc-shaped sound insulation tube 2, sound insulation cavity 3, support plate 4, swing bearing 5, forward rocker arm 6, forward vibration plate 7, end connecting rod 8, guide rod 9, guide rod bearing 10, first spring 11, special-shaped plate 12, roller 13, core rod 14, damping cylinder 15, second spring 16, first middle connecting rod 17, forward piston 18, piston cylinder 19, reverse piston 20, damping rod 21, third spring 22, second middle connecting rod 23, reverse rocker arm 24, reverse vibration plate 25, threaded hole 26, elastic spiral plate 27, damping hole 28, sound absorbing tube 29, baffle 30, through hole 31, damping ball 32, anchor rod 33, partition 34, working cavity 35, vibration reduction cavity 36, window 37. DETAILED DESCRIPTION

[0030] like Figures 1 to 8 As shown, a rail transit vibration and noise reduction device of the present invention includes an arcuate sound insulation tube 2 fixed on the inner wall of a tunnel 1 for reducing vibration and noise of a track. The arcuate sound insulation tube 2 is installed on the inner wall of the rail transit tunnel 1, and its outer wall is adapted to the shape of the inner wall of the tunnel 1. The whole is in the shape of one-third of a circular ring. A sound insulation cavity 3 is formed on the inner side of the arcuate sound insulation tube 2. Since the entire moving structure is hidden in the arcuate sound insulation tube 2 fixed on the top of the tunnel 1, the sound insulation cavity 3 can accommodate staff, so it is convenient for inspection and maintenance, thereby ensuring the normal operation and service life of the device.

[0031] Furthermore, in the embodiment of the present invention, a vertical support plate 4 is installed in the soundproof cavity 3, and the upper and lower ends of the support plate 4 are fixed in the arc-shaped soundproof tube 2. The support plate 4 extends along the longitudinal direction of the tunnel 1. A swing support 5 is fixed on the support plate 4, and the swing support 5 is hinged with a positive swing arm 6. The lower end of the positive swing arm 6 extends out of the soundproof cavity 3 and is connected to a positive vibration plate 7. The positive vibration plate 7 is perpendicular to the longitudinal direction of the tunnel 1. The longitudinal direction of the tunnel 1 mentioned here is also the extension direction of the tunnel 1. By installing the positive vibration plate 7, the positive vibration plate 7 is located in a plane parallel to the cross-section of the tunnel 1. Compared with the traditional method of installing a sound-absorbing structure on the inner wall, the air vibration in the rail transit tunnel 1 can be absorbed over a larger area.

[0032] During the specific vibration transmission process, the vibration is transmitted and energy is consumed through some connecting structures. The upper end of the forward swing arm 6 is hinged to the guide rod 9 through the end connecting rod 8. The guide rod 9 is along the horizontal direction. The middle part of the guide rod 9 slides with the guide rod support 10 fixed on the support plate 4. A first spring 11 is connected between the guide rod 9 and the guide rod support 10 to provide elastic restoring force. After the guide rod 9 extends out of the guide rod support 10, it is connected to a special-shaped plate 12. The surface of the special-shaped plate 12 is a winding arc structure. The surface of the special-shaped plate 12 contacts with the roller 13. When the special-shaped plate 12 moves along a straight line, it can drive the roller 13 and the core rod 14 connected thereto to move along the vertical direction.

[0033] During the specific connection and transmission, the roller 13 is rotatably connected to the core rod 14, the core rod 14 is coaxially slidingly sealed and arranged on the inner side of the damping cylinder 15, the damping cylinder 15 is arranged on the outer side of the core rod 14, the damping cylinder 15 is fixed on the support plate 4, a second spring 16 is connected between the core rod 14 and the damping cylinder 15, the damping cylinder 15 is filled with damping fluid, and the outer side of the core rod 14 is connected with a damping structure that cooperates with the damping fluid. After the positive vibration plate 7 vibrates and drives the core rod 14 to move, the damping structure can be displaced in the damping cylinder 15, at which time the damping fluid generates a damping force that hinders the movement of the damping structure, so that the force of air vibration can be converted into the internal energy of the damping fluid, thereby achieving the effect of vibration reduction and noise reduction.

[0034] In this embodiment, a forward piston 18 is hinged to the middle part of the forward rocker arm 6 through a first middle connecting rod 17. The forward piston 18 is slidably arranged in a piston cylinder 19 fixed on the support plate 4. The forward piston 18 moves back and forth on the axis of the piston cylinder 19. A damping component for reducing vibration of the forward piston 18 is installed in the piston cylinder 19. When the forward rocker arm 6 moves back and forth, additional vibration reduction is performed by the damping component, thereby achieving the effect of further reducing vibration and noise.

[0035] In this embodiment, the damping component includes a reverse piston 20, which is arranged in a piston cylinder 19 with a spacing from the forward piston 18, and the reverse piston 20 is coaxial with the forward piston 18 and the piston cylinder 19, and the central cross section of the piston cylinder 19 is a plane, and the forward piston 18 and the reverse piston 20 are stacked relative to the plane, and a damping rod 21 and a third spring 22 are connected between the forward piston 18 and the reverse piston 20, and the reverse piston 20 is connected to the reverse swing rod 24 through the second middle connecting rod 23, and the reverse swing rod 24 is hinged to the swing support 5 fixed on the support plate 4, and the lower end of the reverse swing rod 24 is connected to the reverse vibration plate 25, and the reverse vibration plate 25 and the forward vibration plate 7 are arranged in parallel and spaced apart on the inner side of the tunnel 1. By setting the reverse vibration plate 25, the reverse vibration plate 25 can provide vibration with a frequency opposite to that of the forward piston 18 after being transmitted through the reverse swing rod 24 and the reverse piston 20, and the vibration between the forward piston 18 and the reverse piston 20 can be offset by the damping rod 21, which can achieve a better noise reduction effect.

[0036] In this embodiment, the two ends of the damping rod 21 are respectively provided with external threads of opposite rotation directions, and the end surfaces of the forward piston 18 and the reverse piston 20 are respectively provided with threaded holes 26 corresponding to the two external threads. By rotating the damping rod 21, the displacement between the forward piston 18 and the reverse piston 20 can be adjusted as needed, so that the vibration offset distance between the two is in a better position, thereby achieving better vibration reduction and noise reduction effects. The threaded holes 26 can also facilitate the installation of the damping rod 21. Here, the damping rods 21 are three arranged circumferentially. The damping rods 21 can be disassembled by rotating each damping rod 21 synchronously, which is convenient for replacement.

[0037] In this embodiment, the damping structure includes an elastic spiral plate 27 fixedly surrounding the outer side of the core rod 14, and a damping hole 28 is formed on the elastic spiral plate 27. When the elastic spiral plate 27 is displaced along the axial direction of the core rod 14, it can act on the damping fluid, and the damping fluid flows through the damping hole 28, which can play a damping force to hinder the movement of the elastic spiral plate 27, thereby achieving the effect of reducing vibration and noise.

[0038] In this embodiment, a sound-absorbing tube 29 is detachably installed on the inner side of the arc-shaped sound-insulating tube 2, and two baffles 30 are arranged in the sound-absorbing tube 29, and a through hole 31 is opened on the baffle 30, and a plurality of damping balls 32 are installed between the two baffles 30. The sound-absorbing tube 29 can additionally absorb noise, and the air vibration is transmitted to the sound-absorbing tube 29 through the through hole 31, which can cause the damping ball 32 to bounce. The damping ball 32 is made of rubber material, and the sound-absorbing tube 29 can be made of rubber material or sound insulation felt. After bouncing, the damping ball 32 can further dissipate energy, thereby reducing the transmission of noise.

[0039] In this embodiment, a plurality of anchor rods 33 are installed at the upper end of the arc-shaped sound insulation tube 2, and the arc-shaped sound insulation tube 2 is fixed to the inner wall of the tunnel 1 by the anchor rods 33, so that the position of the arc-shaped sound insulation tube 2 can be fixed, and the prefabrication construction is carried out in the factory to facilitate the installation of the overall device.

[0040] In this embodiment, a plurality of partitions 34 are arranged at intervals inside the arc-shaped sound insulation tube 2 along the longitudinal direction thereof. The partitions 34 divide the sound insulation chamber 3 into a plurality of staggered working chambers 35 and vibration reduction chambers 36. The vibration reduction chamber 36 is filled with sound insulation cotton, which can further reduce noise in areas where no sound insulation structure is installed.

[0041] In this embodiment, a window 37 is provided on the inner wall of the arc-shaped sound insulation tube 2 , and the window 37 is connected to the working chamber 35 , so that the staff can enter and perform maintenance conveniently.

[0042] A method for using a rail transit vibration and noise reduction device, using any of the vibration and noise reduction devices described above, first prefabricating an arcuate sound insulation tube 2 and various vibration reduction components in a factory, fixing the arcuate sound insulation tube 2 on the inner wall of a tunnel 1, sequentially installing various vibration reduction components at intervals along the longitudinal direction of the tunnel 1, burying the damping tube 15 of the vibration reduction component into the inner wall of the tunnel 1, adjusting the position of a forward vibration plate 7 to adapt it, and finally closing the arcuate sound insulation tube 2, completing the installation of the vibration and noise reduction device and starting to use it.

[0043] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A rail transit vibration and noise reduction device, characterized in that: The invention comprises an arc-shaped sound insulation cylinder fixed on the inner wall of the tunnel for reducing vibration and noise of the track, a sound insulation cavity is formed on the inner side of the arc-shaped sound insulation cylinder, a vertical support plate is installed in the sound insulation cavity, a swing support is fixed on the support plate, a positive swing arm is hinged on the swing support, the lower end of the positive swing arm is connected to a positive vibration plate after extending out of the sound insulation cavity, the positive vibration plate is perpendicular to the longitudinal direction of the tunnel, the upper end of the positive swing arm is hinged to the guide rod through an end connecting rod, the middle part of the guide rod is slidably matched with the guide rod support fixed on the support plate, a first spring is connected between the guide rod and the guide rod support, the guide rod is connected to a special-shaped plate after extending out of the guide rod support, the surface of the special-shaped plate is in contact with a roller, the roller is rotatably connected to the core rod, the core rod coaxial sliding seal is arranged on the inner side of the damping cylinder, the damping cylinder is fixed on the support plate, a second spring is connected between the core rod and the damping cylinder, the damping cylinder is filled with damping fluid, and the The outer side of the core rod is connected to a damping structure that cooperates with the damping fluid; the middle part of the forward swing arm is hinged with a forward piston through a first middle connecting rod, and the forward piston is slidably arranged in a piston cylinder fixed on a support plate, and a damping component for reducing vibration of the forward piston is installed in the piston cylinder; the damping component includes a reverse piston, and the reverse piston is arranged in the piston cylinder with a spacing from the forward piston, and a damping rod and a third spring are connected between the forward piston and the reverse piston, and the reverse piston is connected to the reverse swing arm through a second middle connecting rod, and the reverse swing arm is hinged to a swing support fixed on the support plate, and the lower end of the reverse swing arm is connected to a reverse vibration plate, and the reverse vibration plate and the forward vibration plate are arranged in parallel and spaced apart on the inner side of the tunnel; after the reverse vibration plate is transmitted through the reverse swing arm and the reverse piston, it provides vibration of the opposite frequency to the forward piston, and the vibration between the forward piston and the reverse piston is offset by the damping rod.

2. A rail transit vibration and noise reduction device according to claim 1, characterized in that: The two ends of the damping rod are respectively provided with external threads with opposite rotation directions, and the end surfaces of the forward piston and the reverse piston are respectively provided with threaded holes corresponding to the two external threads.

3. The rail transit vibration and noise reduction device according to claim 1, characterized in that: The damping structure comprises an elastic spiral plate fixedly surrounding the outer side of the core rod, and a damping hole is formed on the elastic spiral plate.

4. The rail transit vibration and noise reduction device according to claim 1, characterized in that: A sound absorbing tube is detachably mounted on the inner side of the arc-shaped sound insulation tube. Two baffles are arranged in the sound absorbing tube at intervals. Through holes are opened on the baffles. A plurality of damping balls are installed between the two baffles.

5. The rail transit vibration and noise reduction device according to claim 1, characterized in that: A plurality of anchor rods are installed at the upper end of the arc-shaped sound insulation cylinder, and the arc-shaped sound insulation cylinder is fixed to the inner wall of the tunnel through the anchor rods.

6. The rail transit vibration and noise reduction device according to claim 1, characterized in that: A plurality of partitions are arranged in the arc-shaped sound insulation tube along the longitudinal direction thereof, and the partitions divide the sound insulation cavity into a plurality of staggered working cavities and vibration reduction cavities, and the vibration reduction cavity is filled with sound insulation cotton.

7. A rail transit vibration and noise reduction device according to claim 6, characterized in that: A window is provided on the inner side wall of the arc-shaped sound insulation cylinder, and the window is communicated with the working chamber.

8. A method for using a rail transit vibration and noise reduction device, characterized in that: The vibration and noise reduction device as described in any one of claims 1 to 7 is firstly prefabricated in a factory with an arcuate sound insulation tube and various vibration reduction components. After the arcuate sound insulation tube is fixed to the inner wall of the tunnel, the vibration reduction components are sequentially installed at intervals along the longitudinal direction of the tunnel, the damping tube of the vibration reduction component is buried in the inner wall of the tunnel, the position of the forward vibration plate is adjusted to adapt to it, and finally the arcuate sound insulation tube is closed to complete the installation of the vibration and noise reduction device and start using it.

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