Elastic force reducing wall structure capable of reducing vibration and noise

Abstract

The utility model provides an elastic force-reducing wall structure capable of reducing vibration and noise. The elastic force-reducing wall structure comprises a high-density board, a heat insulation layer, a keel cavity, a sound insulation felt and a decorative surface layer which are sequentially arranged in an attached mode. Rock wool is embedded in the keel cavity, a plurality of vibration reduction keels are evenly distributed on the sound insulation felt, and a plurality of vibration absorbers are evenly distributed on the vibration reduction keels. The structure combination can form a composite wall body, the low-frequency part of noise can be weakened, medium-high frequency noise is weakened through the vibration reduction keels and the vibration absorbers on the sound insulation felt in the multi-layer structure, the composite wall body can be applied to places such as residential districts, and noise of buildings can be effectively isolated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to building damping and noise reduction technical field, specifically related to a damping and noise reduction elastic force reduction wall structure. BACKGROUND

[0002] The good environment, health, quiet and comfortable life of modern city residential area is the pursuit of people after the improvement of living standards, however, the actual situation of many residential areas in the city is not like this, the environmental noise pollution is the main hot spot of the complaints of the residents of the city residential area, and the complaints of low-frequency noise are more and more in recent years, the influence of low-frequency noise on the living environment of the community gradually attracts attention. For example, the noise pollution problem of the power distribution room as an important part of power supply facilities is increasingly prominent, in the power distribution room, low-frequency vibration noise is a common type of noise, which is mainly caused by equipment vibration, resonance between equipment and other factors.

[0003] In the problem of building damping and noise reduction, reducing the propagation of low-frequency noise is the main problem at present, and the characteristics of long wavelength, long propagation distance and slow energy attenuation of low-frequency noise make it difficult to be absorbed by traditional sound insulation materials in the propagation process, which brings great challenge to noise reduction work. CONTENT OF THE UTILITY MODEL

[0004] In view of the problems in the prior art, the utility model provides an elastic force reduction wall structure for damping and noise reduction to solve the technical problem that the existing related technology cannot effectively isolate noise.

[0005] The utility model is realized through the following technical schemes:

[0006] An elastic force reduction wall structure for damping and noise reduction, comprising high-density plates, heat insulation layers, keel cavities, sound insulation felt and decorative surface layers which are sequentially attached, the keel cavities are inlaid with rock wool, the sound insulation felt is uniformly distributed with a plurality of damping keels, and the damping keels are uniformly distributed with a plurality of dampers.

[0007] Further, the high-density plates are attached to the wall.

[0008] Further, the high-density plates are made of barium sulfate plates.

[0009] Further, the heat insulation layer is made of fireproof rubber plates, and the heat insulation layer is attached to the high-density plates.

[0010] Further, the keel cavities are fixed to the wall through the high-density plates and the heat insulation layers.

[0011] The rock wool is attached to the heat insulation layer.

[0012] Further, the damping keel is arranged on the sound insulation felt in a uniform arrangement in a transverse, longitudinal or transverse-longitudinal combination, and the keel cavity and the damping keel are detachably connected to the wall.

[0013] Further, the damper is detachably connected to the damping keel.

[0014] Further, the number of the damper per square meter is at least 7.5.

[0015] Further, the damper specification is 100*26*30mm, and the damping keel thickness is 35-55mm.

[0016] Further, the decorative surface layer adopts a gypsum board or an osb board.

[0017] Compared with the prior art, the damping noise reduction elastic force reduction wall structure has the following beneficial technical effects:

[0018] The damping noise reduction elastic force reduction wall structure comprises a high-density board, a heat insulation layer, a keel cavity, a sound insulation felt and a decorative surface layer which are sequentially attached; the keel cavity is inlaid with rock wool; the sound insulation felt is uniformly provided with a plurality of damping keels; and the damping keels are uniformly provided with a plurality of dampers. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic view of the damping noise reduction elastic force reduction wall structure of the damping noise reduction elastic force reduction wall structure.

[0020] Figure 2 It is a horizontal sectional view of the elastic force reduction wall structure.

[0021] Figure 3 It is a detail view of the damper of the elastic force reduction wall structure.

[0022] Figure 4 It is a distribution diagram of the negative first floor and the ground first floor measurement points in the example of the damping noise reduction elastic force reduction wall structure.

[0023] Figure 5 It is a sound energy proportion diagram of the indoor noise measurement points in the daytime in the example of the damping noise reduction elastic force reduction wall structure.

[0024] Figure 6 It is a sound energy proportion diagram of the indoor noise measurement points at night in the example of the damping noise reduction elastic force reduction wall structure.

[0025] Figure 7 It is a reconstruction diagram of the installation of the elastic force reduction wall in the example 1 of the damping noise reduction elastic force reduction wall structure.

[0026] Figure 8 is the measurement result graph of equivalent A sound level in the utility model example 1;

[0027] Figure 9 is the 1 / 3 octave spectrum graph at measuring point 1 in the utility model example 1;

[0028] Figure 10 is the 1 / 3 octave spectrum graph at measuring point 2 in the utility model example 1;

[0029] Figure 11 is the 1 / 3 octave spectrum graph at measuring point 3 in the utility model example 1;

[0030] Figure 12 is the 1 / 3 octave spectrum graph at measuring point 4 in the utility model example 1;

[0031] Figure 13 is the reconstruction drawing of installing elastic force-reducing wall in the utility model example 2;

[0032] Figure 14 is the measurement result graph of equivalent A sound level in the utility model example 2;

[0033] Figure 15 is the 1 / 3 octave spectrum graph at measuring point 3 in the utility model example 2;

[0034] Figure 16 is the 1 / 3 octave spectrum graph at measuring point 4 in the utility model example 2.

[0035] In the drawing: 1, concrete wall; 2, high-density plate; 3, heat insulation layer; 4, keel cavity; 5, sound insulation felt; 6, decorative surface layer; 7, rock wool; 8, shock absorber; 9, shock-absorbing keel. DETAILED DESCRIPTION

[0036] The utility model will be described in further detail below with reference to the drawings, which is the explanation of the utility model but not the limitation.

[0037] In order to make the personnel in the technical field better understand the utility model scheme, the technical scheme in the utility model example will be clearly and completely described below with reference to the drawings in the utility model example, obviously, the described example is only a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making the creative labor should belong to the scope of the utility model protection.

[0038] It should be noted that the terms "first", "second", and the like in the description and claims of the present application and above drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, system, product or device including a series of steps or units does not necessarily limit to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, products or devices.

[0039] Figure 1 A damping and noise reduction elastic force reduction wall structure is shown in the embodiments of the present application, as shown in Figure 1 and Figure 2 The high-density plate 2, the heat insulation layer 3, the keel cavity 4, the sound insulation felt 5 and the decorative surface layer 6 are sequentially attached and arranged; the rock wool 7 is embedded in the keel cavity 4; the sound insulation felt 5 is uniformly distributed with a plurality of damping keels 9; the damping keels 9 are uniformly distributed with a plurality of dampers 8.

[0040] Specifically, the elastic force reduction wall structure in the embodiments of the present application is arranged on the wall of the resident side or the noise side, and for the area with larger noise, in some embodiments, the elastic force reduction wall structure disclosed in the embodiments can be arranged on both sides of the wall of the resident side and the noise side to improve the sound insulation and noise reduction function.

[0041] Preferably, in the embodiments of the present application, the high-density plate 2 is attached to the concrete wall 1; further, the high-density plate 2 adopts barium sulfate plate, which can effectively block the propagation of sound waves in the wall due to its high density and good sound wave absorption characteristics.

[0042] Preferably, in the embodiments of the present application, the heat insulation layer 3 adopts fireproof rubber plate, and the heat insulation layer 3 is attached and connected with the high-density plate 2; specifically, due to the low thermal conductivity of rubber material, it can effectively insulate heat transfer and improve the heat insulation performance of the wall structure.

[0043] Preferably, in the embodiments of the present disclosure, the keel cavity 4 is fixed to the wall through the high-density plate 2 and the thermal insulation layer 3 by expansion bolts; the keel cavity 4 is a framework with a grid structure, and after being connected with the thermal insulation layer 3, a groove is formed and filled with rock wool 7, which is adhered to the thermal insulation layer 3. The rock wool 7 is a fibrous porous material that can effectively absorb sound waves to achieve sound insulation effect. The keel cavity 4 is a wooden keel, which is screwed into the concrete wall 1 by expansion bolts. In some embodiments, 4.5 m of wooden keel 4 is arranged per square meter of wall surface. Specifically, the keel cavity 4 includes longitudinal keels and transverse keels, and holes are drilled in the longitudinal keels and the transverse keels every 400 mm for fixation.

[0044] Preferably, in the embodiments of the present disclosure, the damping keel 9 is arranged in a uniform manner in the transverse direction, the longitudinal direction, or a combination of the transverse direction and the longitudinal direction on the sound insulation felt 5. Specifically, the damping keel 9 is connected to the keel cavity 4 and the concrete wall 1 by a plurality of expansion bolts. Further, the damper 8 is detachably connected to the damping keel 9. Specifically, as shown in Figure 3 In the embodiments of the present disclosure, the damping keel 9 is fixedly connected by a clamping groove, and the damper 8 is screwed onto the damping keel 9. The damping keel 9 can be arranged in a combination of the transverse direction and the longitudinal direction, that is, shorter damping keels 9 are arranged between the damping keels 9 arranged in the transverse direction or the longitudinal direction through clamping grooves. At the same time, the shorter damping keels 9 can also be provided with dampers 8 to provide stronger damping and noise reduction capabilities.

[0045] Specifically, the damper 8 will deform after receiving transmitted energy, consume energy through deformation, and restore to its original shape. This process is repeated multiple times to achieve the damping and energy consumption process.

[0046] Preferably, in the embodiments of the present disclosure, the number of dampers 8 per square meter is at least 7.5, and the spacing distance of the dampers 8 is 400 mm. Further, the specification of the damper 8 is 100*26*30 mm, and the thickness of the damping keel 9 is 35-55 mm.

[0047] Preferably, in the embodiments of the present disclosure, the decorative surface layer 6 is made of gypsum board or European pine board.

[0048] It should be noted that, in the embodiments of the present disclosure, the damping keel 9 and the keel cavity 4 are connected to the concrete wall 1 by a plurality of expansion bolts, and the high-density plate 2, the thermal insulation layer 3, the sound insulation felt 5, and the decorative surface layer 6 are all connected by adhesion, thereby reducing the transmission of low-frequency energy.

[0049] Embodiment 1:

[0050] This example takes a residential as the research object, the power distribution room of the residential is located below the residential, is adjacent to the first floor of the residential, according to the standard, the measuring point is arranged in the room of the user side, as shown in Figure 4 The sound energy proportion of each measuring point of indoor noise during day and night is calculated according to the formula, as shown in Figure 5 、 6 The sound energy proportion is concentrated in the position of 50, 100, 200Hz where the peak value appears, and the sound energy proportion in the position of 100Hz is the highest. It can be known that the indoor noise is derived from the low frequency noise in the range of 20-200Hz.

[0051] The elastic force reduction wall of the utility model is mainly arranged on the user side which is greatly affected by noise, and covers the main wall affected by the power distribution room. The force reduction wall adopts 10mm thick barium sulfate plate, 50mm fireproof rubber plate, 30*40mm specification wall surface wood keel, 50mm thick rock wool 7, 1.2mm thick sound insulation felt 5, 100*26*30mm specification shock absorber 8, 45mm specification shock absorbing keel 9 and 12mm thick single-layer gypsum board.

[0052] Specifically, as shown in Figure 7 According to the actual situation, part of the elastic force reduction wall is installed on the user side of measuring point 1 and measuring point 2, and the measuring point after the transformation is arranged at four positions ①, ②, ③ and ④.

[0053] Specifically, as shown in Figure 8 It can be seen that among the measuring points of the user side where the elastic force reduction wall is installed, the equivalent A sound level of measuring point 1 decreases by 4dB, and the equivalent A sound level of measuring point 2 decreases by 7dB, while the equivalent A sound level of measuring point 3 and measuring point 4 which are not installed with the elastic force reduction wall does not change obviously, and even increases to a certain extent.

[0054] The 1 / 3 octave spectrum of each measuring point is shown in Figure 9 、 10 , 11, 12. It can be seen that the sound pressure level of measuring point 1 and measuring point 2 of the user side where the elastic force reduction wall is installed decreases obviously below 200Hz. The spectrum in the low frequency range of measuring point 3 and measuring point 4 which are not installed with the elastic force reduction wall does not change obviously, which can prove the effective effect of the elastic force reduction wall in the low frequency range.

[0055] Example 2

[0056] This example takes the partition wall of the residential in example 1 as the research object, the power distribution room of the residential is located below the residential, is adjacent to the first floor of the residential. According to the standard, the measuring point is arranged in the room of the residential, as shown in Figure 4 .

[0057] The utility model discloses a force reduction wall is mainly set to the inhabitant of the greater noise influence, covers the main wall body of the influence of distribution room, this force reduction wall adopts 15mm thick barium sulfate board, 3cm thick rubber shock absorbing board, 30 * 40mm specification wall surface wood keel, the double -layer sound insulation cotton of thickness single layer is 5cm, 3mm thick sound insulation felt 5, 100 * 26 * 30mm specification shock absorber 8, 45mm specification shock absorbing keel 9, 15mm thick osb.

[0058] Specifically as Figure 13 Indicated, according to actual circumstances, the measuring point 3 and measuring point 4 are installed in part elastic force reduction wall on the side of the inhabitant, and the measuring point position after the modification is at ③ and ④.

[0059] Specifically as Figure 14 Indicated, it can be seen that in the measuring point of the user side that has installed elastic force reduction wall, the equivalent A sound level of measuring point 3 drops 3dB, and the equivalent A sound level of measuring point 4 drops 3dB.

[0060] The 1 / 3 octave spectrum of measuring point 3 and measuring point 4 is as Figure 15 、 16 Indicated, it can be seen that the sound pressure level of measuring 3 and measuring point 4 of the user side that has installed elastic force reduction wall has obvious reduction in the range below 200Hz, and the effective effect of the application in the low frequency range can be proved.

[0061] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical scheme of the utility model, and not limited to it;Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it still can modify the technical scheme recorded in the foregoing embodiments, or make equivalent replacement to part or all technical features;And these modifications or replacements do not make the essence of the corresponding technical scheme deviate from the scope of the utility model embodiment technical scheme.

Claims

1. A vibration-damping and noise-reducing elastic shearing wall structure, characterized in that, It includes a high-density board (2), a heat insulation layer (3), a keel cavity (4), a sound insulation felt (5), and a decorative surface layer (6) that are sequentially attached; rock wool (7) is embedded in the keel cavity (4), and multiple vibration damping keels (9) are evenly distributed on the sound insulation felt (5), and multiple vibration dampers (8) are evenly distributed on the vibration damping keel (9).

2. The vibration-damping and noise-reducing elastic shearing wall structure according to claim 1, characterized in that, The high-density board (2) is adhered to the wall.

3. The vibration-damping and noise-reducing elastic shearing wall structure according to claim 1 or 2, characterized in that, The high-density board (2) is made of barium sulfate.

4. The vibration-damping and noise-reducing elastic shearing wall structure according to claim 1, characterized in that, The heat insulation layer (3) is made of fireproof rubber sheet, and the heat insulation layer (3) is bonded to the high-density board (2).

5. The vibration-damping and noise-reducing elastic shearing wall structure according to claim 1, characterized in that, The keel cavity (4) is fixed to the wall via a high-density board (2) and a heat insulation layer (3); The rock wool (7) is adhered to the insulation layer (3).

6. The vibration-damping and noise-reducing elastic shearing wall structure according to claim 1, characterized in that, The vibration damping keel (9) is arranged evenly on the sound insulation felt (5) in a horizontal, vertical or horizontal-vertical combination, and the keel cavity (4) and the vibration damping keel (9) are detachably connected to the wall.

7. The vibration-damping and noise-reducing elastic shearing wall structure according to claim 1, characterized in that, The vibration damper (8) is detachably connected to the vibration damping keel (9).

8. The vibration-damping and noise-reducing elastic shearing wall structure according to claim 1, characterized in that, The number of vibration dampers (8) per square meter shall be at least 7.

5.

9. The vibration-damping and noise-reducing elastic shearing wall structure according to claim 1, characterized in that, The vibration damper (8) has a specification of 100*26*30mm, and the vibration damping keel (9) has a thickness of 35-55mm.

10. The vibration-damping and noise-reducing elastic shearing wall structure according to claim 1, characterized in that, The decorative surface layer (6) is made of gypsum board or OSB board.

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