Vibration and noise reduction damping device

Abstract

The vibration and noise reduction damping device comprises a main body unit and an installation unit, the main body unit comprises a steel rail, clamping plates are arranged on the two sides of a rail web of the steel rail, a first damping layer is fixed to one side of each clamping plate, the first damping layers are attached to the rail web of the steel rail, and sound absorption plates are fixed to the sides, away from the first damping layers, of the clamping plates. A bottom plate is arranged at the bottom of the steel rail, and the mounting unit comprises two side plates. An annular sleeve is pulled to drive a sliding rod to move, when the sliding rod moves, a baffle is driven to move upwards, so that the distance between the annular sleeve and a disc is increased, then the disc is moved to the position below a nut, the nut is embedded into a containing groove, then the annular sleeve is loosened, at the moment, the annular sleeve is driven to move downwards under the resilience force of a spring, and the threaded rod is sleeved with the annular sleeve; and at the moment, the annular sleeve and the disc limit the distance between the nut and the nut, so that the nut is prevented from falling off from the screw due to vibration, and the stability of the device is improved.

Description

Technical Field

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

[0002] With the rapid development of rail transit, track vibration and noise caused by train operation are becoming increasingly serious. Publication No. CN118600783 A discloses a composite damper for reducing rail vibration and noise. Vibration-damping fasteners are connected to both sides and the bottom of the rail, and these fasteners abut against the outer ends of folded constraint members. This composite damper improves high-frequency damping and noise reduction, expands the vibration reduction frequency range, and increases energy loss. Publication No. CN 209338923 U discloses a track vibration reduction and noise reduction device. The sound-absorbing layer can block the propagation of noise generated by rail vibration, achieving a secondary noise reduction effect on top of reducing rail vibration noise. The damping layer, sound-absorbing layer, and the grooves and protrusions on the constraint plate ensure a tight connection between the three components, facilitating vibration transmission and dissipation, and better utilizing the device's vibration reduction performance. The device has a simple structure and is easy to process and install.

[0003] When the two patents mentioned above fix the damping device to the rail, they mainly use bolts and nuts for installation and fixation. However, after the damping device is installed on the rail, it can reduce the vibration of the rail, but it cannot stop the rail from vibrating. The rail will still vibrate slightly, and the vibration of the rail will cause the bolts and nuts to vibrate. After working for a long time, the nuts are easy to fall off the bolts, resulting in poor stability. Utility Model Content

[0004] (I) Purpose of the utility model

[0005] In view of this, the purpose of this utility model is to propose a vibration reduction and noise reduction damping device. The technical problem to be solved is that when the damping device is fixed on the rail, it is mainly installed and fixed by bolts and nuts. However, after the damping device is installed on the rail, it can reduce the vibration of the rail, but it cannot stop the rail from vibrating. The rail will still vibrate slightly, and the vibration of the rail will cause the bolts and nuts to vibrate. After long-term operation, the nuts are easy to fall off the bolts, resulting in poor stability.

[0006] (II) Technical Solution

[0007] To achieve the above technical objectives, this utility model provides a vibration reduction and noise reduction damping device:

[0008] It includes a main unit and an installation unit. The main unit includes a rail, with clamps on both sides of the rail web. A first damping layer is fixed to one side of each clamp, and the first damping layer is in contact with the rail web. A sound-absorbing plate is fixed to the side of the clamp away from the first damping layer. A base plate is provided at the bottom of the rail. The installation unit includes two side plates, which are respectively fixed to the top two sides of the base plate. Multiple support rods are fixed to the clamps, and an installation block is fixed to the end of each support rod away from the clamp. The side plates are provided with fixing components for fixing the side plates and the installation blocks, and anti-detachment components are also provided on the side plates to prevent the fixing components from falling off.

[0009] Preferably, the fixing component includes a circular hole formed in the mounting block and the side plate, a screw is slidably connected in the circular hole, a nut is fixed at the bottom of the screw, a nut is threadedly connected to the top of the screw, the nut abuts against the bottom of the side plate, and the nut abuts against the top of the mounting block.

[0010] Preferably, the anti-detachment component includes a disc with a storage groove inside. The nut can be embedded in the storage groove. A second connecting plate is fixed to the outside of the disc. A rectangular frame is fixed to the second connecting plate. A sliding rod is slidably connected inside the rectangular frame. A first connecting plate is fixed to the top of the sliding rod. An annular sleeve is fixed to one side of the first connecting plate. The annular sleeve can be fitted onto the screw.

[0011] Preferably, a baffle is fixed at the bottom of the slide rod, and a spring is sleeved on the outside of the slide rod. One end of the spring abuts against the baffle, and the other end of the spring abuts against the inner wall of the rectangular frame.

[0012] Preferably, two guide rods are fixed on the outer side of the baffle, and stroke grooves are provided on both sides of the rectangular frame, with the two guide rods slidingly engaged in the corresponding stroke grooves.

[0013] Preferably, the base plate has an inner cavity, the bottom of the rail can be embedded in the inner cavity, a second damping layer is laid in the inner cavity, and the bottom of the rail and the second damping layer are in contact.

[0014] As can be seen from the above technical solutions, this application has the following beneficial effects:

[0015] 1. By placing the bottom of the rail into the inner cavity, and then placing the clamping plate on both sides of the rail, the first damping layer and the rail web are brought into contact. Then, the screw is passed through the round hole, and the nut and screw are connected by threads, so that the mounting block and the side plate are fixed together, that is, the clamping plate is fixed. At this time, the first damping layer and the second damping layer play the role of shock absorption and damping, and the sound-absorbing plate plays the role of noise reduction.

[0016] 2: Pull the annular sleeve to move the sliding rod. As the sliding rod moves, it causes the baffle to move upward, increasing the distance between the annular sleeve and the disc. Then, move the disc below the nut so that the nut is embedded in the receiving groove. Then, release the annular sleeve. At this time, the spring rebound force causes the annular sleeve to move downward, so that the annular sleeve is fitted onto the screw. At this time, the annular sleeve and the disc restrict the distance between the nut and the screw, thereby preventing the nut from falling off the screw due to vibration and improving the stability of the device. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0018] Figure 1 A schematic diagram of the structure of a vibration reduction and noise reduction damping device provided by this utility model;

[0019] Figure 2 A partial structural breakdown diagram of a vibration reduction and noise reduction damping device provided by this utility model;

[0020] Figure 3 Provided by this utility model Figure 2 Schematic diagram of the structure at point A;

[0021] Figure 4 This is a schematic diagram of the anti-detachment component provided by this utility model.

[0022] Figure Descriptions: 100, Main Unit; 101, Rail; 102, Clamping Plate; 103, First Damping Layer; 104, Sound Absorbing Plate; 105, Base Plate; 106, Inner Cavity; 107, Second Damping Layer; 200, Mounting Unit; 201, Side Plate; 202, Support Rod; 203, Mounting Block; 204, Circular Hole; 205, Screw Rod; 206, Nut; 207, Nut; 208, Disc; 209, Storage Slot; 210, Annular Sleeve; 211, First Connecting Plate; 212, Second Connecting Plate; 213, Slide Rod; 214, Rectangular Frame; 215, Baffle; 216, Spring; 217, Guide Rod; 218, Stroke Slot. Detailed Implementation

[0023] The following description is exemplary in nature and is not intended to limit the scope, application, or use of this disclosure. It should be understood that in all these figures, the same or similar reference numerals indicate the same or similar parts and features. The figures are merely schematic representations of the concept and principles of embodiments of this disclosure and do not necessarily show the specific dimensions and scale of the various embodiments of this disclosure. Certain details or structures of embodiments of this disclosure may be exaggerated in particular portions of certain figures.

[0024] Reference Figure 1-4 :

[0025] In one embodiment of this utility model, a vibration reduction and noise reduction damping device is provided, including a main unit 100 and an installation unit 200. The main unit 100 includes a rail 101, with clamping plates 102 provided on both sides of the rail web of the rail 101. A first damping layer 103 is fixed to one side of the clamping plate 102, and the first damping layer 103 is in contact with the rail web of the rail 101. A sound-absorbing plate 104 is fixed to the side of the clamping plate 102 away from the first damping layer 103. A bottom plate 105 is provided at the bottom of the rail 101, and an inner cavity 106 is opened in the bottom plate 105. The bottom of the rail 101 can... The installation unit 200 is embedded in the inner cavity 106, and the inner cavity 106 is lined with a second damping layer 107. The bottom of the rail 101 is in contact with the second damping layer 107. The installation unit 200 includes two side plates 201, which are respectively fixed to the top two sides of the base plate 105. Multiple support rods 202 are fixed on the clamping plate 102. An installation block 203 is fixed to one end of the support rod 202 away from the clamping plate 102. The side plate 201 is provided with a fixing component for fixing the side plate 201 and the installation block 203. The side plate 201 is also provided with an anti-detachment component for preventing the fixing component from falling off.

[0026] Specifically, the fixing component includes a circular hole 204 opened in the mounting block 203 and the side plate 201, a screw 205 slidably connected in the circular hole 204, a nut 206 fixed at the bottom of the screw 205, a nut 207 threadedly connected to the top of the screw 205, the nut 206 abutting against the bottom of the side plate 201, and the nut 207 abutting against the top of the mounting block 203.

[0027] In use, the bottom of the rail 101 is placed inside the inner cavity 106, and then the clamping plate 102 is placed on both sides of the rail 101 so that the first damping layer 103 and the rail web of the rail 101 are in contact. Then, the screw 205 is passed through the round hole 204, and the nut 207 is threaded to the screw 205, thereby fixing the mounting block 203 and the side plate 201 together, that is, the clamping plate 102 is fixed. At this time, the first damping layer 103 and the second damping layer 107 play the role of shock absorption and damping, and the sound-absorbing plate 104 plays the role of noise reduction.

[0028] Furthermore, the anti-detachment component includes a disc 208, with a storage groove 209 inside the disc 208. A nut 206 can be embedded in the storage groove 209. A second connecting plate 212 is fixed to the outside of the disc 208. A rectangular frame 214 is fixed to the second connecting plate 212. A slide rod 213 is slidably connected inside the rectangular frame 214. A first connecting plate 211 is fixed to the top of the slide rod 213. An annular sleeve 210 is fixed to one side of the first connecting plate 211. The annular sleeve 210 can be fitted onto the screw 205. A baffle 215 is fixed to the bottom of the slide rod 213. A spring 216 is fitted to the outside of the slide rod 213. One end of the spring 216 abuts against the baffle 215, and the other end of the spring 216 abuts against the inner wall of the rectangular frame 214. Two guide rods 217 are fixed to the outside of the baffle 215. Both sides of the rectangular frame 214 have travel grooves 218. The two guide rods 217 are slidably engaged in the corresponding travel grooves 218.

[0029] In use, after the mounting block 203 and the side plate 201 are fixed together by the screw 205 and the nut 207, the annular sleeve 210 is pulled to move the sliding rod 213. When the sliding rod 213 moves, it causes the baffle 215 to move upward. When the baffle 215 moves upward, it compresses the spring 216. When the annular sleeve 210 moves upward, the distance between the annular sleeve 210 and the disc 208 increases. Then the disc 208 is moved below the nut 206, so that the nut 206 is embedded in the receiving groove 209. Then the annular sleeve 210 is released. At this time, under the rebound force of the spring 216, the annular sleeve 210 moves downward, so that the annular sleeve 210 is fitted onto the screw 205. At this time, the annular sleeve 210 and the disc 208 limit the distance between the nut 207 and the nut 206, thereby preventing the nut 207 from falling off the screw 205 due to vibration and improving the stability of the device.

[0030] It should be noted that, due to the arrangement of the guide rod 217 and the stroke groove 218, the guide rod 217 moves within the stroke groove 218 during the up-and-down movement of the annular sleeve 210, thereby constraining the movement path of the annular sleeve 210. This ensures that the annular sleeve 210 always coincides with the axis of the disc 208 and the screw 205, meaning that when the annular sleeve 210 is released, it can be directly fitted onto the screw 205 as it moves down.

[0031] The exemplary implementation of the solution proposed in this disclosure has been described in detail above with reference to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the spirit of this disclosure, and various combinations can be made to the various technical features and structures proposed in this disclosure without exceeding the protection scope of this disclosure, which is determined by the appended claims.

Claims

1. A vibration and noise reducing damping device, characterized in that, Include: The main unit (100) includes a rail (101), the rail (101) is provided with a clamping plate (102) on both sides of the rail web, one side of the clamping plate (102) is fixed with a first damping layer (103), the first damping layer (103) and the rail web of the rail (101) are attached, the side of the clamping plate (102) away from the first damping layer (103) is fixed with an acoustic panel (104), and the bottom of the rail (101) is provided with a bottom plate (105); The mounting unit (200) includes two side plates (201), and the two side plates (201) are respectively fixed on the top of the bottom plate (105). A plurality of support rods (202) are fixed on the clamping plate (102), one end of the support rod (202) away from the clamping plate (102) is fixed with a mounting block (203), the side plate (201) is provided with a fixing assembly for fixing the side plate (201) and the mounting block (203), and the side plate (201) is also provided with an anti-falling assembly for preventing the fixing assembly from falling off.

2. The damping device of claim 1, wherein The fixing assembly includes a circular hole (204) formed in the mounting block (203) and the side plate (201), the circular hole (204) is slidably connected with a screw rod (205), the bottom of the screw rod (205) is fixed with a nut (206), the top of the screw rod (205) is threadedly connected with a nut (207), the nut (206) abuts against the bottom of the side plate (201), and the nut (207) abuts against the top of the mounting block (203).

3. The vibration and noise reduction damping device of claim 2, wherein, The anti-falling assembly includes a disc (208), the disc (208) is provided with a receiving groove (209), the nut (206) can be embedded in the receiving groove (209), the outer side of the disc (208) is fixed with a second connecting plate (212), the second connecting plate (212) is fixed with a rectangular frame (214), the rectangular frame (214) is slidably connected with a slide rod (213), the top of the slide rod (213) is fixed with a first connecting plate (211), one side of the first connecting plate (211) is fixed with an annular sleeve (210), and the annular sleeve (210) can be sleeved on the screw rod (205).

4. The damping device of claim 3, wherein the damping device is configured to reduce the noise of the damping device. The bottom of the slide rod (213) is fixed with a baffle (215), the outer side of the slide rod (213) is sleeved with a spring (216), one end of the spring (216) abuts against the baffle (215), and the other end of the spring (216) abuts against the inner wall of the rectangular frame (214).

5. The vibration and noise reducing damping device of claim 4, wherein, The outer side of the baffle (215) is fixed with two guide rods (217), the two sides of the rectangular frame (214) are provided with travel grooves (218), and the two guide rods (217) are respectively slidably connected in the corresponding travel grooves (218).

6. The vibration and noise reducing damping device of claim 1, wherein The bottom plate (105) is provided with an inner cavity (106), the bottom of the rail (101) can be embedded in the inner cavity (106), and the inner cavity (106) is paved with a second damping layer (107). The bottom of the rail (101) and the second damping layer (107) are attached.

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