Tuning track floating slab capable of reducing vibration and noise

Abstract

A tuning track floating slab capable of reducing vibration and noise comprises a floating slab body and a mass block, a steel rail is arranged on the floating slab body, limiting bosses are installed at the two ends of the floating slab body so as to be connected with the ground to limit displacement of the floating slab body, an installation groove allowing the mass block to be installed in is formed in the middle of the floating slab body, and the installation groove is rectangular. The mass block is made of steel or reinforced concrete, a balancing weight installation groove is formed in the middle of the mass block so that cylindrical balancing weights can be installed, the balancing weights are cylinders made of steel or lead, and the mass block is fixed to the supporting boss through mass block installation bolts; therefore, the device is simple in structure and convenient to operate, replace and maintain, the defects in the prior art are effectively overcome, the tuning function of train passing is achieved, and better vibration and noise reduction functions are provided.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transportation, in particular to a tuning track floating plate for reducing vibration and noise. Background Art

[0002] With the rapid development of society and the economy, urban populations are increasing. Urban rail transit, as a fast and convenient means of public transportation, has greatly met the living needs of residents. An increasing number of rail transit lines are approaching or even passing through buildings that require vibration protection. To this end, the industry primarily controls vibration through three approaches: reducing vibration at the source, isolating vibration along the vibration transmission path, and isolating vibration of the vibrated body. Floating slab tracks using advanced vibration reduction measures can achieve a vibration reduction effect of 10dB or more. While conventional prefabricated floating slabs are suitable for mass production in factories, the small cross-sections at tunnel construction sites limit construction space and transportation and hoisting, limiting construction speed. Furthermore, the vibration isolation components used on floating slabs are generally difficult to replace after failure or performance degradation.

[0003] To this end, in view of the above defects, the designers of the present invention have devoted themselves to research and design, and integrated their long-term experience and achievements in related industries to research and design a tuning track floating plate with vibration and noise reduction to overcome the above defects. Utility Model Content

[0004] The purpose of this utility model is to provide a tuning track floating plate for vibration reduction and noise reduction, which has a simple structure, is easy to operate, and is convenient to replace and maintain. It effectively overcomes the defects of the existing technology, achieves multiple effects such as broadband vibration reduction, high damping energy absorption, stable structure, easy installation and maintenance, and precise frequency modulation, and effectively improves the vibration reduction and noise reduction performance of rail transit.

[0005] To achieve the above-mentioned purpose, the utility model discloses a tuning track floating plate with vibration and noise reduction, comprising a floating plate body and a mass block. The floating plate body is provided with a steel rail, and limiting bosses are installed at both ends to connect with the ground to limit the displacement of the floating plate body. The utility model is characterized in that:

[0006] The middle part of the floating plate body is provided with an installation groove for the mass block to be installed. The number of the installation grooves is 1 to 2, and the shape of the installation groove is rectangular. The material of the mass block is steel or reinforced concrete. The middle part of the mass block is provided with 2 to 4 cylindrical counterweight block installation grooves to respectively install cylindrical counterweight blocks. The counterweight block is a steel or lead cylinder. The mass block is fixed to the support boss by a mass block mounting bolt. The mass block is provided with a mass block bolt mounting hole for the mass block mounting bolt to pass through.

[0007] Wherein: a through hole is opened in the middle of the counterweight block, so that the counterweight block mounting bolt passes through and is fixed to the counterweight block bolt mounting hole at the bottom of the counterweight block mounting slot, thereby firmly fixing the counterweight block to the mass block.

[0008] Wherein: the upper surface edge of the installation groove is provided with a step surface with a height of 5 to 10 mm, the step surfaces on all sides are of equal width and a width of 30 to 50 mm, and a rectangular protective cover plate is installed on the step surface to cover the upper surface of the mass block.

[0009] Wherein: the protective cover plate is connected and fastened to the floating plate body by four fastening bolts on all four sides.

[0010] Wherein: the installation slot is a through-type installation slot, the four corners of the through-type installation slot are provided with support bosses for bearing the mass block, and the four corners of the mass block are provided with support installation slots for the support bosses to be placed.

[0011] Wherein: rubber springs or steel coil springs are provided between the four corners of the mass block and the supporting boss.

[0012] Wherein: the support boss is provided with a lower spring installation groove for accommodating a rubber spring or a steel coil spring, and the support installation groove is provided with an upper spring installation groove for accommodating a rubber spring or a steel coil spring to firmly fix and accommodate the spring.

[0013] Wherein: the mounting groove is a blind groove mounting groove, which is a rectangular square groove with a certain depth set on the upper surface of the floating plate, and a bottom cover of a certain thickness is left at the bottom, and the mass block is placed in the blind groove mounting groove.

[0014] Wherein: rubber vibration damping pads are arranged between the two sides of the mass block and the blind groove type installation groove.

[0015] From the above content, it can be seen that the vibration and noise reduction tuning track floating plate of the present invention has the following effects:

[0016] 1. Simple structure, easy operation, convenient replacement and maintenance.

[0017] 2. Broadband Vibration Damping: By utilizing tuned mass absorbers, this device can resonate with multiple modes of the primary vibration system over a wider frequency band, achieving broadband vibration reduction. This design significantly reduces vertical vibration acceleration in the 2-10 Hz frequency range, effectively extending the floating slab track's vibration reduction frequency range.

[0018] 3. High Damping and High Impedance: The device's resonant vibration absorber is infused with a material with damping properties, such as polyurethane, which effectively absorbs and suppresses rail vibration. The use of this high-damping material gives the device an outstanding suppression effect on vibration peaks.

[0019] 4. Stability and safety of structure: through the mutual cooperation of the groove and the boss, each structure position is more stable and safe, and the loss of function is avoided. Meanwhile, the installation position can better avoid the influence on the work of the steel rail.

[0020] 5. Easy installation and maintenance: the device realizes quick installation and disassembly through the cooperation of the multiple clamps and the limiting concave-convex, facilitates construction, and improves efficiency.

[0021] 6. Precise frequency adjustment capability: the device considers the influence of frequency matching accuracy on the damping effect of the steel rail damper, through the precise frequency adjustment structure design, the inherent frequency is not affected by the clamping force and is not sensitive to the manufacturing and processing errors, so that a significant damping effect is generated near the target frequency.

[0022] 7. Reduce radiation noise: the on-line test of the actual vehicle shows that the device can effectively reduce the radiation noise caused by the steel rail vibration. Especially in the medium and high frequency band, the damping and noise reduction effect of the device is remarkable, and the radiation noise in the tunnel can be significantly reduced.

[0023] 8. Adapt to different speeds: the research results show that with the increase of the train speed, the damping effect of the floating slab presents a trend of first increasing and then slightly decreasing, and the damping effect of the floating slab is greater than 10 dB when the speed is above 100 km / h. Compared with the ordinary monolithic track bed, the steel spring floating slab has a certain noise reduction effect, and the maximum value can reach 3.7 dB(A).

[0024] The detailed content of the utility model can be obtained through the following description and the attached drawings. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 The structure diagram of the tuned rail floating slab for damping and noise reduction of the utility model is shown.

[0026] Figure 2 The structure diagram of another embodiment of the tuned rail floating slab for damping and noise reduction of the utility model is shown.

[0027] Figure 3 The structure diagram of one embodiment of the tuned rail floating slab for damping and noise reduction of the utility model is shown.

[0028] Figure 4 The structure diagram of another embodiment of the tuned rail floating slab for damping and noise reduction of the utility model is shown.

[0029] Figure 5A And Figure 5B The structure diagram of the floating slab body of one embodiment of the utility model is shown.

[0030] Figure 6A and Figure 6B The figure shows a schematic structural diagram of a mass block according to one embodiment of the present invention.

[0031] Figure 7 The figure shows the structure of another embodiment of the tuning track floating plate for reducing vibration and noise of the present invention.

[0032] Figure 8A and Figure 8B Shows Figure 7 Schematic diagram of the structure of the counterweight block of the embodiment.

[0033] Reference numerals:

[0034] 10. Floating plate; 11. Through-type mounting groove; 111. Support boss; 112. Lower spring mounting groove; 113. Step surface; 12. Blind groove mounting groove; 13. Rubber vibration damping pad; 20. Rail; 30. Limit boss; 40. Mass block; 41. Protective cover; 42. Mass block mounting bolt; 421. Mass block bolt mounting hole; 43. Counterweight mounting bolt; 44. Counterweight; 441. Counterweight mounting groove; 442. Counterweight bolt mounting hole; 45. Rubber spring; 451. Support mounting groove; 452. Upper spring mounting groove; 46. Steel coil spring; DETAILED DESCRIPTION

[0035] See also Figure 1 , showing one embodiment of the vibration and noise reducing tuning track floating plate of the present invention.

[0036] The tuning track floating plate for vibration reduction and noise reduction includes a floating plate body 10 and a mass block 40. The floating plate body 10 is provided with a rail 20, and a limiting boss 30 is installed at both ends to connect with the ground to limit the lateral displacement of the floating plate body 10. The middle part of the floating plate body 10 is provided with a mounting groove for the mass block 40 to be installed. Figure 1 and Figure 2 As shown, the number of the mounting slots can be set as 1 to 2 according to the needs. When one is set, it is set in the center. When two are set, they are set side by side. The shape of the mounting slot 11 is rectangular. Figures 3 to 6BIn the embodiment, the mounting groove is a through-type mounting groove 11, the material of the mass block 40 is steel or reinforced concrete, and the middle part of the mass block is provided with 2 to 4 cylindrical counterweight mounting grooves 441 to respectively install cylindrical counterweights 44 for increasing or decreasing the counterweight to adjust the overall weight of the mass block. The counterweight 44 is a steel or lead cylinder, and a through hole is provided in the middle of the counterweight 44 to pass through the counterweight mounting bolt 43 and then be fixed to the counterweight bolt mounting hole 442 at the bottom of the counterweight mounting groove 441, so that the counterweight 44 is firmly fixed to the mass block 40, and the four corners of the through-type mounting groove 11 are provided with support bosses 111 (see Figure 5A and Figure 5B ), the four corners of the mass block 40 are provided with support mounting grooves 441 for the support bosses 111 to be placed in (see Figure 6A and Figure 6B ), rubber springs 45 are provided between the four corners of the mass block 40 and the supporting boss 111 (see Figure 3 Embodiment) or steel coil spring 46 (see Figure 4 In another embodiment, the mass block 40 is fixed to the support boss 111 by a mass block mounting bolt 42. The mass block 40 is provided with a mass block bolt mounting hole 421 for the mass block mounting bolt 42 to pass through. The function of the spring is to make the kinetic energy gain of the mass block more obvious during the vibration process, thereby increasing the tuning and vibration reduction and noise reduction effects.

[0037] Among them, the support boss 111 is provided with a lower spring mounting groove 112 for accommodating a rubber spring 45 or a steel coil spring 46, and the support mounting groove 441 is provided with an upper spring mounting groove 442 for accommodating a rubber spring 45 or a steel coil spring 46, so as to firmly fix and accommodate the spring and effectively prevent the spring from dislocation and loss of function.

[0038] Among them, the edge of the upper surface of the mounting groove is provided with a step surface 113 with a height of 5 to 10 mm, and the step surfaces 113 on all sides are of equal width and a width of 30 to 50 mm. A rectangular protective cover plate 41 is installed on the step surface 113 to cover the upper surface of the mass block 40. The protective cover plate 41 is connected and fastened to the floating plate body by four fastening bolts on all sides. After the protective cover plate 41 is installed, it is flush with the upper surface of the floating plate body, thereby improving safety performance and avoiding damage to the operator.

[0039] exist Figure 7 、 Figure 8A and Figure 8BIn the shown embodiment, the mounting groove is a blind groove type mounting groove 12, which is a rectangular groove with a certain depth provided on the upper surface of the floating plate, and the bottom of the groove is also provided with a certain thickness of bottom sealing. The mass block 40 is placed in the blind groove type mounting groove 12, and rubber damping pads 13 are arranged between the two sides of the mass block 40 and the blind groove type mounting groove 12. In this embodiment, no rubber spring or steel spiral spring is arranged between the mass block and the floating plate body, but two rubber damping pads are arranged on the two sides of the mass block to provide damping function.

[0040] It is obvious that the above description and record are only examples and are not intended to limit the disclosure, application or use of the present application. Although the embodiments have been described in the embodiments and in the drawings, the present application is not limited to the specific examples of the teachings for implementing the present application as the currently considered best mode, and the scope of the present application will include any embodiments falling within the preceding description and the appended claims.

Claims

1. A tuning track floating plate for vibration and noise reduction, comprising a floating plate body and a mass block, wherein the floating plate body is provided with rails and has limit bosses installed at both ends to connect with the ground to limit the displacement of the floating plate body, characterized in that: The middle part of the floating plate body is provided with an installation groove for the mass block to be installed. The number of the installation grooves is 1 to 2, and the shape of the installation groove is rectangular. The material of the mass block is steel or reinforced concrete. The middle part of the mass block is provided with 2 to 4 cylindrical counterweight block installation grooves to respectively install cylindrical counterweight blocks. The counterweight block is a steel or lead cylinder. The mass block is fixed to the support boss by a mass block mounting bolt. The mass block is provided with a mass block bolt mounting hole for the mass block mounting bolt to pass through.

2. The tuning track floating plate for vibration and noise reduction according to claim 1, characterized in that: A through hole is provided in the middle of the counterweight block, through which a counterweight block mounting bolt passes and is fixed to the counterweight block bolt mounting hole at the bottom of the counterweight block mounting slot, thereby firmly fixing the counterweight block to the mass block.

3. The tuning track floating plate for vibration and noise reduction according to claim 1, characterized in that: The upper edge of the mounting groove is provided with a step surface with a height of 5 to 10 mm, and the step surfaces on all sides are of equal width and 30 to 50 mm. A rectangular protective cover plate is installed on the step surface and covers the upper surface of the mass block.

4. The tuning track floating plate for vibration and noise reduction according to claim 3, characterized in that: The protective cover plate is fastened to the floating plate body by four fastening bolts on all four sides.

5. The tuning track floating plate for vibration and noise reduction according to any one of claims 1 to 4, characterized in that: The mounting groove is a through-type mounting groove, and the four corners of the through-type mounting groove are each provided with a supporting boss for bearing the mass block, and the four corners of the mass block are provided with a supporting mounting groove for the supporting boss to be placed.

6. The tuning track floating plate for vibration and noise reduction according to claim 5, characterized in that: Rubber springs or steel coil springs are provided between the four corners of the mass block and the supporting bosses.

7. The tuning track floating plate for vibration and noise reduction according to claim 6, characterized in that: The support boss is provided with a lower spring installation groove for accommodating a rubber spring or a steel coil spring, and the support installation groove is provided with an upper spring installation groove for accommodating a rubber spring or a steel coil spring to firmly fix and accommodate the spring.

8. The tuning track floating plate for vibration and noise reduction according to claim 1, characterized in that: The mounting groove is a blind groove type mounting groove, which is a rectangular square groove with a certain depth set on the upper surface of the floating plate, and a bottom cover of a certain thickness is left at the bottom. The mass block is placed in the blind groove type mounting groove.

9. The tuning track floating plate for vibration and noise reduction according to claim 8, characterized in that: Rubber vibration damping pads are arranged between both sides of the mass block and the blind groove type mounting groove.

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