Mass tuning maintenance auxiliary damping device containing damping particles

Abstract

The invention discloses a mass tuning maintenance auxiliary vibration damper containing damping particles, which is mounted on the inner side of a trapezoidal sleeper of an existing track or above the middle of a track plate, and comprises a mass tuning plate filled with damping particles, vibration energy is consumed through collision and friction between the damping particles and the wall face and mutual collision and friction between the damping particles, so that the vibration reduction effect is achieved, especially vertical vibration is eliminated, and a track is prevented from being damaged; meanwhile, as a whole, the mass tuning plate is in direct contact with the track, the natural vibration frequency of the whole mass tuning plate is close to the natural vibration frequency of the track plate, and therefore the effects of mass tuning, negative-phase movement relative to vibration of the track plate and vibration reduction are achieved, and the vibration reduction device has the double vibration reduction effects.

Description

Technical Field

[0001] The invention belongs to the field of vibration and noise control of rail transit, and in particular relates to a mass tuning maintenance auxiliary vibration reduction device containing damping particles. Background Art

[0002] Rail transit refers to a type of transportation tool or transportation system in which vehicles need to travel on specific tracks, including subways, light rails, railway systems, etc. However, in the actual operation of the vehicle, different degrees of vibration and noise will be generated. Among them, vertical vibration has the greatest threat to the damage effect on the railway system. In order to control the vibration and noise of rail transit, the existing rail vibration and noise reduction measures mainly use the reduction (loss) of the stiffness of the track structure. This type of engineering measure is the most widely used and has significant effects. However, this method will increase the vibration displacement of the track structure, induce rail corrugation, make the vehicle run unevenly, reduce comfort, increase the internal noise of the vehicle, and also cause defects such as broken fastener spring bars and cracked track plates.

[0003] Therefore, it is very necessary and urgent to explore the use of technical means such as increasing the damping of structural components and maintaining the rigidity of the track structure to ensure the smoothness and comfort of vehicle operation and reduce related diseases.

[0004] Especially for rail lines that are in operation, when it is found that the vibration is large, it is of great practical value to provide a good vibration reduction modification plan with low investment.

[0005] Due to the above reasons, the inventors have designed a mass tuning maintenance auxiliary vibration reduction device containing damping particles in view of the above engineering problems based on theoretical research and extensive investigations. The device can assist in vibration reduction of track plates and sleepers of existing lines or newly built rail transit without replacing the track plates or sleepers of existing tracks, and will not affect the main line operation. Summary of the invention

[0006] In order to overcome the above-mentioned problems, the inventors have conducted intensive research and designed a mass tuning maintenance auxiliary vibration reduction device containing damping particles, which is installed on the inner side of the trapezoidal sleeper of the existing track, or above the middle of the track plate. The vibration reduction device includes a mass tuning plate, and the damping particles are filled inside the mass tuning plate. The vibration energy is consumed by the collision and friction between the damping particles and the wall, and the collision and friction between the damping particles, thereby achieving a vibration reduction effect, especially eliminating vertical vibration and avoiding damage to the track; at the same time, as a whole, the mass tuning plate is in direct contact with the track, and the natural frequency of the mass tuning plate as a whole is close to the natural frequency of the track plate, thereby playing a role in mass tuning. Relative to the vibration of the track plate, it is a "negative phase" motion, which plays a vibration reduction role. It can be seen that the vibration reduction device has a dual vibration reduction effect, thereby completing the present invention.

[0007] Specifically, the object of the present invention is to provide a mass tuning maintenance auxiliary vibration reduction device containing damping particles, which is installed inside the trapezoidal sleeper of the existing track or installed above the middle of the track plate of the existing track to repair the existing track;

[0008] The existing track is a track in operation, and the rails are supported by ladder-shaped sleepers or track plates;

[0009] The vibration reduction device comprises a mass tuning plate 1, the interior of which is filled with damping particles, wherein the damping particles are selected from one or more of iron sand, lead particles, steel balls, and sand;

[0010] The vibration energy is consumed by the collision and friction between the damping particles and the wall surface of the mass tuning plate 1 and the collision and friction between the damping particles.

[0011] A cavity 2 for accommodating the damping particles is provided inside the mass tuning plate 1 ; the damping particles 3 are filled in the cavity 2 .

[0012] Wherein, in the cavity 2 of the mass tuning plate 1, the volume proportion of the damping particles is 80-90%.

[0013] Wherein, when the vibration reduction device is installed on the inner side of the trapezoidal sleeper,

[0014] The opening end of the cavity 2 is located on the top surface of the mass tuning plate 1 , and a cover plate 4 is provided on the top of the cavity 2 to block the opening end.

[0015] Wherein, slots 11 are provided on both sides of the bottom of the mass tuning plate 1 , and the mass tuning plate 1 is clamped on the trapezoidal rail sleeper through the slots 11 .

[0016] A strip-shaped vibration-damping pad 51 is arranged in the slot 11 , the top of the strip-shaped vibration-damping pad 51 supports the mass tuning plate 1 , and the bottom of the strip-shaped vibration-damping pad 51 abuts against the trapezoidal sleeper.

[0017] The dimensions of the mass tuning plate 1 are 1174 mm in length, 1015 mm in width, and 97 mm in thickness;

[0018] The effective volume in cavity 2, i.e., the volume of space that can be used to accommodate damping particles, is 928 mm × 715 mm × 45 mm = 0.0298584 m 3 .

[0019] When the vibration reduction device is installed above the middle of the track plate 9,

[0020] The opening end of the cavity 2 is located at the side of the mass tuning plate 1 , and a side plate 6 is provided on the side of the cavity 2 to block the opening end.

[0021] A fully covered vibration damping pad 52 is provided at the bottom of the mass tuning plate 1.

[0022] A fixing device is provided on the outer side of the mass tuning plate 1, and the fixing device includes a fastening rod 71 surrounding the outer side of the mass tuning plate 1, and pads 72 are provided at both ends of the fastening rod 71. The fixing device is fixed to the track plate through the pads 72, and the mass tuning plate 1 and the full-covered vibration-damping pad 52 are fixed to the track plate 9 through the fixing device.

[0023] The dimensions of the mass tuning plate 1 are 2000 mm in length, 800 mm in width and 75 mm in height;

[0024] The effective volume in cavity 2, i.e. the volume of space that can be used to accommodate damping particles, is 1980 mm × 780 mm × 55 mm = 0.084942 m 3 .

[0025] The beneficial effects of the present invention include:

[0026] (1) The mass tuning maintenance auxiliary vibration reduction device containing damping particles provided by the present invention is installed above the middle of the track plate of the existing track, or on the inner side of two existing trapezoidal sleepers. Adding the device has a great effect on improving the vibration reduction effect of the existing track structure during maintenance assistance;

[0027] (2) The mass tuning maintenance auxiliary vibration reduction device containing damping particles provided by the present invention is particularly suitable for situations where the vibration reduction measures of the existing track structure are damaged, failed, reduced in function and cannot be replaced. The device can increase and improve the vibration reduction effect of the existing track structure without affecting the operation of the existing line;

[0028] (3) The mass tuning maintenance auxiliary vibration reduction device containing damping particles provided by the present invention has the dual effects of mass tuning vibration reduction and damping particle vibration reduction, and its vibration reduction effect will greatly exceed the vibration reduction measures of using only one of them;

[0029] (4) The mass tuning maintenance auxiliary vibration reduction device containing damping particles provided by the present invention has damping particles arranged inside. Compared with the parametric vibration system of "mass + spring", the vibration of the track structure is rapidly attenuated through the energy consumption of collision between particles and between particles and the container wall, and the vibration reduction and noise reduction effect is better;

[0030] (5) The mass tuning maintenance auxiliary vibration reduction device containing damping particles provided by the present invention has damping particles arranged inside, and its frequency covers low frequency to high frequency, has a broad spectrum, and has a vibration reduction effect on vibrations in all frequency bands, while the frequencies of ordinary track plates and sleepers are mostly concentrated between 20 and 80 Hz, and the vibration reduction effect on low frequency bands is relatively poor. According to previous investigations and studies, it is often the vibrations in the low frequency band that have a greater impact on the surrounding geology and buildings. The vibrations in the low frequency band are also the vibrations that propagate the farthest in the soil, decay the slowest, and have the greatest impact. Therefore, the vibration reduction device has great significance and effect in optimizing and improving conventional vibration reduction measures. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 An overall schematic diagram showing the mass tuning maintenance auxiliary vibration reduction device containing damping particles provided by the present invention when it is installed on the inner side of a trapezoidal sleeper of an existing track;

[0032] Figure 2 A cross-sectional view showing the mass tuning maintenance auxiliary vibration reduction device containing damping particles provided by the present invention when installed on the inner side of a trapezoidal sleeper of an existing track;

[0033] Figure 3 A perspective view showing a mass tuning maintenance auxiliary vibration reduction device containing damping particles provided by the present invention when installed on the inner side of a trapezoidal sleeper of an existing track;

[0034] Figure 4 A schematic diagram showing the structure of a vibration damping pad when the mass tuning maintenance auxiliary vibration damping device containing damping particles provided by the present invention is installed on the inner side of a trapezoidal sleeper of an existing track;

[0035] Figure 5 A schematic diagram showing the cover plate structure when the mass tuning maintenance auxiliary vibration reduction device containing damping particles provided by the present invention is installed on the inner side of a trapezoidal sleeper of an existing track;

[0036] Figure 6 An overall schematic diagram showing the mass tuning maintenance auxiliary vibration reduction device containing damping particles provided by the present invention when it is installed above the middle part of the track plate of the existing track;

[0037] Figure 7 A schematic diagram showing the structure of a mass tuning plate when the mass tuning maintenance auxiliary vibration reduction device containing damping particles provided by the present invention is installed above the middle part of the track plate of an existing track;

[0038] Figure 8 A schematic structural diagram of a fixing device for the mass tuning maintenance auxiliary vibration reduction device containing damping particles provided by the present invention is shown above the middle part of the track plate of an existing track.

[0039] Reference numerals

[0040] 1- Quality Tuning Plate

[0041] 11-Slot

[0042] 2- Cavity

[0043] 3- Damping particles

[0044] 4- Cover

[0045] 51-Strip vibration damping pad

[0046] 52-Full-covered vibration damping pads

[0047] 6-Side panels

[0048] 71- Fastening rod

[0049] 72-Pad

[0050] 8-Trapezoidal sleeper

[0051] 9-Track plate DETAILED DESCRIPTION

[0052] The present invention will be further described in detail below through the accompanying drawings and embodiments. Through these descriptions, the characteristics and advantages of the present invention will become more clear and distinct.

[0053] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise noted.

[0054] The present invention provides a mass tuning maintenance auxiliary vibration reduction device containing damping particles, such as Figure 1 and Figure 6 As shown in , the vibration reduction device is installed on the inner side of the trapezoidal sleeper of the existing track, or installed on the middle part of the track plate of the existing track to repair the existing track; the existing track is a track in operation and use, and the steel rail is supported by the trapezoidal sleeper or the track plate;

[0055] In the present application, the vibration reduction device is mainly used for the maintenance of existing tracks, and the maintenance is carried out without affecting the normal operation of the existing tracks. That is, the vibration reduction device is placed at a predetermined position of the existing track to achieve maintenance of the existing track and improve the vibration reduction effect of the existing track.

[0056] In this application, the ladder sleepers and track slabs refer to two common track laying schemes in track systems;

[0057] The trapezoidal sleeper in the present application comprises two longitudinal beams extending along the length direction of the rails, on which the rails are installed and fixed via rail supports, and between the two longitudinal beams there are arranged a varying number of transverse connecting mechanisms, and between the two longitudinal beams there is an idle space, so that the vibration damping device in the present application can be clipped into the idle space; in actual engineering, the frame-type track plate also has an idle space similar to the above-mentioned trapezoidal sleepers, and the vibration damping device in the present application can also be clipped into the idle space, so the trapezoidal sleepers in the present application include trapezoidal sleepers in the traditional sense, as well as sleeper structures with similar structural forms such as frame-type track plates, that is, sleeper structures that can allow the vibration damping device in the present application to be clipped between the two longitudinal beams can be classified as the trapezoidal sleepers in the present application.

[0058] The track plate in the present application includes a whole, continuous track plate, which can carry two steel rails at the same time. There is no longitudinal beam on such a track plate, that is, there is no idle space allowing the vibration reduction device of the present application to be clamped. Therefore, for a track plate with such a structural form, the vibration reduction device in the present application is directly laid and installed on the track plate and is located between the two steel rails.

[0059] The vibration reduction device includes a mass tuning plate 1, in which damping particles are filled, and the damping particles are selected from one or more of iron sand, lead particles, steel balls, and sand. The inventors found that the preferred order of the damping particle materials is: lead, steel, iron, sand, etc.; suitable damping particles can be selected according to the vibration reduction performance requirements and economy.

[0060] In the present application, preferably, the damping particles are approximately spherical in shape. The spherical shape can make the collision vibration between each other more irregular, and the overall vibration reduction effect is the best. More preferably, the particle size of the damping particles is 0.1-1 mm, preferably 0.2-0.6 mm; the particle sizes of the multiple damping particles filled in a cavity may not be completely consistent with each other, as long as they are all within the specified range. The inventors have found that when the particle size is controlled within the above-mentioned 0.2-0.4 mm, the overall vibration reduction effect is best.

[0061] The vibration energy is consumed by the collision and friction between the damping particles and the wall surface of the mass tuning plate 1 and the collision and friction between the damping particles.

[0062] A cavity 2 for accommodating the damping particles is provided inside the mass tuning plate 1; the damping particles 3 are filled in the cavity 2. The cavity 2 is a closed cavity, which can prevent liquid from entering the cavity, ensure that the cavity remains dry, and avoid affecting the vibration reduction effect.

[0063] In a preferred embodiment, in the cavity 3 of the mass tuning plate 1, the volume proportion of the damping particles is 80-90%, preferably about 85%. The applicant has found that according to the vibration characteristics of the railway system, the vibration reduction performance of about 85% volume proportion is the best, which can maximize the vibration reduction effect.

[0064] In a preferred embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown in , when the vibration reduction device is installed on the inner side of the trapezoidal sleeper 8, the sleeper in the present application is a trapezoidal sleeper with a sleeper length of 6 meters.

[0065] The opening end of the cavity 2 is located on the top surface of the mass tuning plate 1 , and a cover plate 4 is provided on the top of the cavity 2 to block the opening end.

[0066] Slots 11 are provided on both sides of the bottom of the mass tuning plate 1, and the mass tuning plate 1 is clamped on the trapezoidal sleeper through the slots 11. That is, the top of the mass tuning plate 1 is located above the trapezoidal sleeper, and the bottom of the mass tuning plate 1 is located between two trapezoidal sleepers, so that the mass tuning plate 1 can be limited and fixed by the trapezoidal sleepers.

[0067] A strip-shaped vibration-damping pad 51 is arranged in the slot 11 , the top of the strip-shaped vibration-damping pad 51 supports the mass tuning plate 1 , and the bottom of the strip-shaped vibration-damping pad 51 abuts against the trapezoidal sleeper.

[0068] When the vibration reduction device is installed on the inner side of the trapezoidal sleeper, the dimensions of the mass tuning plate 1 are 1174 mm in length, 1015 mm in width and 97 mm in thickness;

[0069] The effective volume in cavity 2, i.e., the volume of space that can be used to accommodate damping particles, is 928 mm × 715 mm × 45 mm = 0.0298584 m 3 .

[0070] In a preferred embodiment, Figure 6 , Figure 7 and Figure 8 As shown in , when the vibration reduction device is installed above the middle of the track plate,

[0071] The opening end of the cavity 2 is located at the side of the mass tuning plate 1 , and a side plate 6 is provided on the side of the cavity 2 to block the opening end.

[0072] Preferably, a full-covered vibration-damping pad 52 is provided at the bottom of the mass tuning plate 1; a fixing device is provided on the outer side of the mass tuning plate 1, and the fixing device includes a fastening rod 71 surrounding the outer side of the mass tuning plate 1, and pads 72 are provided at both ends of the fastening rod 71, and the fixing device is fixed to the track plate through the pads 72.

[0073] The fully-paved vibration-damping pad at the bottom of the mass tuning plate 1 is similar to the strip vibration-damping pad located between the sleeper and the mass tuning plate. Both vibration-damping pads can act as a "spring" to amplify the "movement" stroke, acceleration, etc. of the damping particle container, thereby achieving the effect of gain damping particle vibration reduction. In addition, the vibration-damping pad can absorb part of the vibration energy of the track plate (sleeper). By selecting vibration-damping pads of different sizes and static moduli, the vibration frequency of the track plate (sleeper) can be tuned to improve the vibration reduction effect.

[0074] Preferably, when the vibration reduction device is installed above the middle of the track plate, the dimensions of the mass tuning plate 1 are 2000 mm in length, 800 mm in width, and 75 mm in height;

[0075] The effective volume in cavity 2, i.e. the volume of space that can be used to accommodate damping particles, is 1980 mm × 780 mm × 55 mm = 0.084942 m 3 .

[0076] Example

[0077] A 1000-meter-long experimental track was selected, which was equipped with trapezoidal sleepers. In order to simulate a partially damaged railway to be repaired, worn trapezoidal sleepers and related fasteners and rails were used to build the experimental track, and efforts were made to ensure that the construction quality of each part of the experimental track was consistent.

[0078] A 6-car B-type subway train with an axle weight of 14 tons, with a fixed distance and wheelbase of 12.6m and 2.25m respectively, was used to pass through the test track at a speed of 69 kilometers per hour. The vertical vibration level at the measuring point of the track was measured to be 82.3dB.

[0079] Then, a mass tuning maintenance auxiliary vibration reduction device containing damping particles is laid on the trapezoidal sleeper, and the vibration reduction device is installed on the inner side of the trapezoidal sleeper, such as Figure 1 As shown in , the vibration reduction device includes a mass tuning plate, and a cavity for accommodating iron sand particles is opened inside the mass tuning plate; in the cavity, the volume of the iron sand particles accounts for 85%;

[0080] Slots are provided on both sides of the bottom of the mass tuning plate, and the mass tuning plate is overlapped on the trapezoidal sleeper through the slots;

[0081] A strip-shaped vibration-damping pad is arranged in the slot, the top of the strip-shaped vibration-damping pad supports the mass tuning plate, and the bottom of the strip-shaped vibration-damping pad abuts against the trapezoidal rail sleeper.

[0082] A mass tuning plate is overlapped and installed on each set of trapezoidal sleepers; the dimensions of the mass tuning plate are 1174 mm in length, 1015 mm in width, and 97 mm in thickness;

[0083] The effective volume of the cavity in the mass tuning plate, that is, the volume of space that can be used to accommodate damping particles, is 928mm×715mm×45mm=0.0298584m 3

[0084] After the mass tuning maintenance auxiliary vibration reduction device containing damping particles was laid and installed, the 6-car B-type subway train was allowed to pass through the experimental track at a speed of 69 kilometers per hour. The vibration level of the vertical vibration at the same measuring point on the track was measured to be 77.4dB.

[0085] Comparative Example 1

[0086] On the track of the embodiment, a vibration reduction device is laid, which is installed on the inner side of the trapezoidal sleeper, such as Figure 1 As shown in , the vibration reduction device includes a mass tuning plate, and a cavity for accommodating iron sand particles is opened inside the mass tuning plate; in the cavity, the volume of the iron sand particles accounts for 60%;

[0087] Slots are provided on both sides of the bottom of the mass tuning plate, and the mass tuning plate is overlapped on the trapezoidal sleeper through the slots;

[0088] A strip-shaped vibration-damping pad is arranged in the slot, the top of the strip-shaped vibration-damping pad supports the mass tuning plate, and the bottom of the strip-shaped vibration-damping pad abuts against the trapezoidal rail sleeper.

[0089] A mass tuning plate is overlapped and installed on each set of trapezoidal sleepers; the dimensions of the mass tuning plate are 1174 mm in length, 1015 mm in width, and 97 mm in thickness;

[0090] The effective volume of the cavity in the mass tuning plate, that is, the volume of space that can be used to accommodate damping particles, is 928mm×715mm×45mm=0.0298584m 3

[0091] After the vibration reduction device was laid and installed, the subway train consisting of 6 B-type cars was allowed to pass through the experimental track at a speed of 69 kilometers per hour. The vibration level of the vertical vibration at the same measuring point on the track was measured to be 79.2 dB.

[0092] Comparative Example 2

[0093] On the track of the embodiment, a vibration reduction device is laid, which is installed on the inner side of the trapezoidal sleeper, such as Figure 1 As shown in , the vibration reduction device includes a mass tuning plate, and a cavity for accommodating iron sand particles is opened inside the mass tuning plate; in the cavity, the volume of the iron sand particles accounts for 85%;

[0094] Slots are provided on both sides of the bottom of the mass tuning plate, and the mass tuning plate is overlapped on the trapezoidal sleeper through the slots;

[0095] A strip-shaped vibration-damping pad is arranged in the slot, the top of the strip-shaped vibration-damping pad supports the mass tuning plate, and the bottom of the strip-shaped vibration-damping pad abuts against the trapezoidal rail sleeper.

[0096] A mass tuning plate is overlapped and installed on each set of trapezoidal sleepers; the dimensions of the mass tuning plate are 1174 mm in length, 825 mm in width, and 97 mm in thickness;

[0097] The effective volume of the cavity in the mass tuning plate, that is, the volume of space that can be used to accommodate damping particles, is 928mm×515mm×45mm=0.0215064m 3

[0098] After the vibration reduction device was laid and installed, the subway train consisting of 6 B-type cars was allowed to pass through the experimental track at a speed of 69 kilometers per hour. The vibration level of the vertical vibration at the same measuring point on the track was measured to be 78.8 dB.

[0099] Comparative Example 2

[0100] On the track of the embodiment, a vibration reduction device is laid, which is installed on the inner side of the trapezoidal sleeper, such as Figure 1 As shown in , the vibration reduction device includes a mass tuning plate, and a cavity for accommodating iron sand particles is opened inside the mass tuning plate; in the cavity, the volume of the iron sand particles accounts for 85%;

[0101] Slots are provided on both sides of the bottom of the mass tuning plate, and the mass tuning plate is overlapped on the trapezoidal sleeper through the slots;

[0102] A strip-shaped vibration-damping pad is arranged in the slot, the top of the strip-shaped vibration-damping pad supports the mass tuning plate, and the bottom of the strip-shaped vibration-damping pad abuts against the trapezoidal rail sleeper.

[0103] A mass tuning plate is overlapped and installed on each set of trapezoidal sleepers; the dimensions of the mass tuning plate are 1174 mm in length, 1200 mm in width, and 97 mm in thickness;

[0104] The effective volume of the cavity in the mass tuning plate, that is, the volume of space that can be used to accommodate damping particles, is 928mm×915mm×45mm=0.0382104m3

[0105] After the vibration reduction device was laid and installed, the subway train consisting of 6 B-type cars was allowed to pass through the experimental track at a speed of 69 kilometers per hour. The vibration level of the vertical vibration at the same measuring point on the track was measured to be 78.9 dB.

[0106] It can be seen from the above embodiments and comparative examples that the mass tuning maintenance auxiliary vibration reduction device containing damping particles provided in the present application can significantly reduce the vibration generated when a train passes by.

[0107] The present invention has been described above in conjunction with preferred embodiments, but these embodiments are only exemplary and serve only as an illustration. On this basis, the present invention may be subjected to a variety of substitutions and improvements, all of which fall within the scope of protection of the present invention.

Claims

1. A mass tuning maintenance auxiliary vibration reduction device containing damping particles, characterized in that: The vibration reduction device is installed on the inner side of the trapezoidal sleeper of the existing track, or installed on the middle part of the track plate of the existing track to repair the existing track; The existing track is a track in operation, and the rails are supported by ladder-shaped sleepers or track plates; The vibration reduction device comprises a mass tuning plate (1), wherein the mass tuning plate (1) is filled with damping particles, wherein the damping particles are selected from one or more of iron sand, lead particles, steel balls, and sand; Vibration energy is consumed by collision and friction between the damping particles and the wall surface of the mass tuning plate (1), and collision and friction between the damping particles.

2. The mass tuning maintenance auxiliary vibration reduction device containing damping particles according to claim 1 is characterized in that: A cavity (2) for accommodating the damping particles is provided inside the mass tuning plate (1); the damping particles (3) are filled in the cavity (2).

3. The mass tuning maintenance auxiliary vibration reduction device containing damping particles according to claim 2 is characterized in that: In the cavity (2) of the mass tuning plate (1), the volume proportion of the damping particles is 80-90%.

4. The mass tuning maintenance auxiliary vibration reduction device containing damping particles according to claim 2 is characterized in that: When the vibration reduction device is installed on the inner side of the trapezoidal sleeper, The open end of the cavity (2) is located on the top surface of the mass tuning plate (1), and a cover plate (4) for sealing the open end is arranged on the top of the cavity (2).

5. The mass tuning maintenance auxiliary vibration reduction device containing damping particles according to claim 4 is characterized in that: Slots (11) are provided on both sides of the bottom of the mass tuning plate (1), and the mass tuning plate (1) is clamped on the trapezoidal rail sleeper through the slots (11).

6. The mass tuning maintenance auxiliary vibration reduction device containing damping particles according to claim 4, characterized in that: A strip-shaped vibration-damping pad (51) is arranged in the slot (11), the top of the strip-shaped vibration-damping pad (51) supports the mass tuning plate (1), and the bottom of the strip-shaped vibration-damping pad (51) abuts against the trapezoidal rail sleeper.

7. The mass tuning maintenance auxiliary vibration reduction device containing damping particles according to claim 4, characterized in that: The dimensions of the mass tuning plate (1) are 1174 mm in length, 1015 mm in width and 97 mm in thickness; The effective volume in the cavity (2), i.e., the volume of space that can be used to accommodate the damping particles, is 928 mm × 715 mm × 45 mm = 0.0298584 m 3 .

8. The mass tuning maintenance auxiliary vibration reduction device containing damping particles according to claim 2, characterized in that: When the vibration reduction device is installed above the middle of the track plate (9), The open end of the cavity (2) is located on the side of the mass tuning plate (1), and a side plate (6) for sealing the open end is provided on the side of the cavity (2).

9. The mass tuning maintenance auxiliary vibration reduction device containing damping particles according to claim 8, characterized in that: A fully covered vibration-damping pad (52) is provided at the bottom of the mass tuning plate (1). A fixing device is arranged on the outer side of the mass tuning plate (1), the fixing device comprising a fastening rod (71) surrounding the outer side of the mass tuning plate (1), cushion blocks (72) being arranged at both ends of the fastening rod (71), the fixing device being fixed to the track plate via the cushion blocks (72), and the mass tuning plate (1) and the full-covered vibration damping pad (52) being fixed to the track plate (9) via the fixing device.

10. The mass tuning maintenance auxiliary vibration reduction device containing damping particles according to claim 8, characterized in that: The dimensions of the mass tuning plate (1) are 2000 mm in length, 800 mm in width and 75 mm in height; The effective volume in the cavity (2), i.e., the volume of space that can be used to accommodate the damping particles, is 1980 mm × 780 mm × 55 mm = 0.084942 m 3 .

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