CN111827529A - A sound insulation composite wall - Google Patents

Abstract

The application discloses sound insulation composite wall, include: the wall unit of vertical setting with set up in the wall unit of support fossil fragments both sides, the wall unit include first wallboard, second wallboard and set up in first wallboard with shock attenuation fossil fragments between the second wallboard, first wallboard is located the second wallboard is kept away from one side of support fossil fragments, both sides form first sound insulation cavity between the wall unit, first wallboard with be formed with second sound insulation cavity between the second wallboard. In the sound insulation composite wall, the sound insulation performance of the wall is greatly improved by arranging the damping keel, the first sound insulation cavity and the second sound insulation cavity.

Description

A sound insulation composite wall

technical field

This article involves but is not limited to the field of construction technology, especially a sound insulation composite wall.

Background technique

In modern buildings, gypsum board walls are more and more widely used as interior partitions as a lightweight wall. In the gypsum board wall, the gypsum board is fixed on the light steel keel, and the light steel keel is used to support and fix the gypsum board. However, although the gypsum board wall has a certain sound insulation ability, it is difficult to achieve a good sound insulation effect and cannot meet people's needs.

SUMMARY OF THE INVENTION

The following is an overview of the topics detailed in this article. This summary is not intended to limit the scope of protection of the claims.

The embodiment of the present application provides a sound-insulating composite wall, which has a good sound-insulating effect by setting a variety of sound-insulating structures.

An embodiment of the present application provides a sound insulation composite wall, comprising: a vertically arranged support keel and wall units arranged on both sides of the support keel, wherein the wall unit includes a first wall panel, a second wall A panel and a shock absorbing keel arranged between the first wall panel and the second wall panel, the first wall panel is located on the side of the second wall panel away from the supporting keel, and all the A first sound insulation cavity is formed between the wall units, and a second sound insulation cavity is formed between the first wall panel and the second wall panel.

In the sound insulation composite wall, the shock-absorbing keel has a certain elasticity. When the energy such as sound waves acts on the wall or the shock-absorbing keel, the shock-absorbing keel will vibrate, and the sound energy is converted into solid mechanical vibration energy through vibration. It is then converted into heat energy and dissipated, so as to achieve the purpose of sound insulation and noise reduction. The arrangement of the first sound insulation cavity between the second wall panels of the two wall units and the arrangement of the second sound insulation cavity between the first wall board and the second wall board makes the wall add three layers The air layer, due to the elastic layer of the air layer, is similar to adding three springs or three dampers inside the wall. Due to the vibration of the air, the sound energy is attenuated to achieve the purpose of sound insulation; at the same time, due to the addition of the air layer, In the process of propagation, the sound wave will be converted between different media, which increases the reflection and attenuation of the sound wave, achieves the purpose of sound insulation and noise reduction, and greatly improves the sound insulation performance of the wall.

In the sound insulation composite wall of the embodiment of the present application, the sound insulation performance of the wall is greatly improved by setting the shock absorbing keel, the first sound insulation cavity and the second sound insulation cavity.

Additional features and advantages of the present application will be set forth in the description that follows.

Description of drawings

The accompanying drawings are used to provide an understanding of the technical solutions of the present application, and constitute a part of the specification. They are used to explain the technical solutions of the present application together with the embodiments of the present application, and do not constitute a limitation on the technical solutions of the present application.

1 is a schematic structural diagram of a sound insulation composite wall according to Embodiment 1 of the application;

2 is a schematic structural diagram of a wall unit of a sound insulation composite wall according to an embodiment of the application;

3a is a first structural schematic diagram of a shock absorbing keel of a sound insulation composite wall according to an embodiment of the application;

3b is a second structural schematic diagram of a shock absorbing keel of the sound insulation composite wall according to the embodiment of the application;

FIG. 3c is a first structural schematic diagram of another shock absorbing keel of the sound insulation composite wall according to the embodiment of the application;

3d is a second structural schematic diagram of another shock absorbing keel of the sound insulation composite wall according to the embodiment of the application;

FIG. 4 is a schematic structural diagram of the sound insulation composite wall according to the second embodiment of the application;

5 is a schematic structural diagram of a decorative panel of a sound insulation composite wall according to an embodiment of the application;

FIG. 6 is a schematic structural diagram of the sound insulation composite wall according to the third embodiment of the application;

FIG. 7 is a schematic diagram of the arrangement of the keels of the sound insulation composite wall according to the embodiment of the application.

Reference number:

1: First wall panel; 2: Second wall panel; 3: Damping keel; 31: First fixing arm; 32: Second fixing arm; 33: Connecting arm; 34: Crimping; 35: Supporting edge; 4 : Support keel; 41: Sound insulation layer; 5: Sound insulation strip; 6: Decorative panel; 61: Sticky ball; 62: Leveling gasket; 71: First sound insulation cavity; 72: Second sound insulation cavity; 73: the third sound insulation cavity; 81: the first fastener; 82: the second fastener; 83: the third fastener; 9, the sound absorption layer; 10: the junction box; 101: the outer casing, 102 : sealant; 11: sky keel; 12: ground keel; 13: through keel; 14: vertical keel.

Detailed ways

Hereinafter, the embodiments of the present application will be described in detail with reference to the accompanying drawings.

The embodiment of the present application provides a sound insulation composite wall, as shown in FIG. 1 and FIG. 2 , including: a vertically arranged support keel 4 and wall units arranged on both sides of the support keel 4 , and the wall unit includes a first A wall panel 1 , a second wall panel 2 and a shock absorbing keel 3 arranged between the first wall panel 1 and the second wall panel 2 , the first wall panel 1 is located on the side of the second wall panel 2 away from the supporting keel 4 , a first sound insulation cavity 71 is formed between the wall units on both sides, and a second sound insulation cavity 72 is formed between the first wall panel 1 and the second wall panel 2 . Among them, the vertical direction refers to the direction perpendicular to the ground after the wall is installed, and the lateral direction refers to the direction parallel to the ground after the wall is installed.

In the sound insulation composite wall, the wall unit is supported and fixed by the supporting keel 4 , and the second wall panel (inner wall panel) 2 and the first wall panel (outer wall panel) 1 are connected by the shock absorbing keel 3 . Not only the second wall panel 2 and the first wall panel 1 can play a certain sound insulation effect, but the shock absorbing keel 3 can also play a sound insulation and noise reduction effect. Since the shock-absorbing keel 3 has a certain elasticity, when the energy such as sound waves acts on the wall or the shock-absorbing keel 3, the shock-absorbing keel 3 will vibrate, and the sound energy will be converted into solid mechanical vibration energy through vibration, and then converted into heat energy And dissipated, so as to achieve the purpose of sound insulation and noise reduction.

The arrangement of the first sound insulation cavity 71 between the second wall panels 2 of the two wall units and the second sound insulation cavity 72 (two) between the first wall board 1 and the second wall board 2 , so that there are three more air layers in the wall. Due to the elastic layer of the air layer, it is similar to adding three springs or three dampers inside the wall. Due to the vibration of the air, the sound energy is attenuated, and the sound insulation is achieved. At the same time, due to the addition of the air layer, the sound wave will be converted between different media during the propagation process, which increases the reflection and attenuation of the sound wave, achieves the purpose of sound insulation and noise reduction, and greatly improves the sound insulation of the wall. performance.

The sound insulation composite wall of the embodiment of the present application greatly improves the sound insulation performance of the wall through the cooperation of the shock absorbing keel 3 with the first sound insulation cavity 71 and the second sound insulation cavity 72 .

In some exemplary embodiments, as shown in FIGS. 2-3 d , the shock absorbing keel 3 includes a first fixing arm 31 , a connecting arm 33 and a second fixing arm 32 connected in sequence, and the first fixing arm 31 and the second fixing arm 31 . The arms 32 are parallel, the connecting arm 33 is inclined, and the end of the connecting arm 33 connected with the second fixed arm 32 is inclined toward the side away from the first fixed arm 31, and the first fixed arm 31 is fixedly connected with the second wall panel 2, The second fixing arm 32 is fixedly connected with the first wall panel 1 . Among them, the wall thickness of the vibration damping keel 3 is ignored in Fig. 3b and Fig. 3d.

The first fixing arm 31 is parallel to the second fixing arm 32 and parallel to the second wall panel 2 and the first wall panel 1, so that the first fixing arm 31 and the second fixing arm 32 are respectively connected with the second wall panel 2 and the first wall panel 1. Fix the wall panels 1 after they are attached. Since the connecting arm 33 is inclined, the first fixed arm 31 and the second fixed arm 32 are arranged staggered (that is, the projection of the first fixed arm 31 on the plane where the second fixed arm 32 is located is separated from the second fixed arm), and the Adjacent ends of a fixed arm 31 and a second fixed arm 32 (the right end of the first fixed arm 31 and the left end of the second fixed arm 32 ) are respectively connected to both ends of the connecting arm 33 .

The vibration-damping keel 3 is roughly in the shape of a "zigzag" and has good elasticity. When the energy such as sound waves acts on the vibration-damping keel 3 or the wall, the vibration-damping keel 3 will vibrate, and the sound energy will be converted into solid machinery through vibration. The vibration energy is converted into heat energy and dissipated, so as to achieve the purpose of sound insulation and noise reduction, and improve the sound insulation performance of the wall.

Compared with ordinary light steel keel (such as C-type, etc.) and Z-type keel, the "Zig"-shaped vibration reduction keel 3 has better elasticity, and the first wall panels connected to both sides of the "Zig"-shaped vibration reduction keel 3 1 and the second wall panel 2 are non-rigid connection, and when the wall panel on one side vibrates, it is difficult to transmit the vibration to the other side wall panel, thereby improving the sound insulation performance of the wall.

Since the damping material with good elasticity has a good noise reduction effect on low frequencies, the "Zig"-shaped shock-absorbing keel 3 has better sound absorption effect at low frequencies than the Z-shaped keel, especially between 100 Hz and 300 Hz. "Zhi"-shaped shock-absorbing keel 3 has better sound absorption effect, which can make up for the lack of low-frequency sound absorption performance of traditional C-shaped keel and Z-shaped keel.

In some exemplary embodiments, as shown in FIGS. 2-3 d , the end of the first fixing arm 31 away from the second fixing arm 32 (the left end of the first fixing arm 31 ) is provided with a curling edge 34 , and the curling edge 34 faces The side where the first wall panel 1 is located is bent. Wherein, the curling edge 34 may be L-shaped, so that the end of the first fixing arm 31 forms a U-shaped structure. There is a gap between the curling edge 34 and the first wall panel 1, and the two are not in contact. Of course, the curling edge 34 can also be an arc shape, or a shape such as a vertical edge or an oblique edge.

In some exemplary embodiments, as shown in FIGS. 2-3d , the end of the second fixing arm 32 away from the first fixing arm 31 (the right end of the second fixing arm 32 ) is provided with a support edge 35 , and the support edge 35 faces The second wall panel 2 is bent. There is a gap between the supporting edge 35 and the second wall panel 2, and the two are not in contact.

The arrangement of the curling edge 34 and the supporting edge 35 can enhance the structural strength of the shock absorbing keel 3 and improve the supporting effect of the shock absorbing keel 3 on the first wall panel 1 . There is a gap between the curling edge 34 and the first wall panel 1, and there is a gap between the supporting edge 35 and the second wall panel 2, so that the setting of the curling edge 34 and the supporting edge 35 does not affect the vibration of the damping keel 3 under the action of sound waves characteristics, so as not to affect the sound insulation and noise reduction effect of the shock absorbing keel 3.

In some exemplary embodiments, the included angle β between the support edge 35 and the second fixing arm 32 is 70°-160°.

In some exemplary embodiments, as shown in FIGS. 2-3 b , the supporting edge 35 is a straight edge arranged perpendicular to the second fixing arm 32 , that is, the included angle β between the supporting edge 35 and the second fixing arm 32 is 90 °.

In some exemplary embodiments, as shown in FIG. 3c and FIG. 3d , the supporting edge 35 is an oblique edge disposed obliquely relative to the second fixing arm 32, and the included angle β between the supporting edge 35 and the second fixing arm 32 is an obtuse angle. . In some exemplary embodiments, the value range of β may be 100°-160°, such as 110°, 120°, 130°, 140°, 150°, 153°, 155°, and the like.

In some exemplary embodiments, the supporting edge 35 is a slanted edge disposed opposite to the second fixing arm 32 , and the included angle β between the supporting edge 35 and the second fixing arm 32 is an acute angle. In some exemplary embodiments, the value range of β may be 70°-90°, such as 75°, 80°, 85°, and the like.

In some exemplary embodiments, as shown in FIG. 2 , the gap between the support edge 35 and the second wall panel 2 is 3mm-12mm.

When the first wall panel 1 is fixed on the second fixing arm 32 of the vibration damping keel 3 by screws (the first connecting member 81 , which will be described below), the screws pass through the first wall panel 1 and the second fixing arm 32 sequentially from the outside. . In the process of screw penetration, due to the elasticity of the vibration-damping keel 3, the second fixing arm 32 of the vibration-damping keel 3 will move and deform in a direction away from the first wall panel 1, so that the screw cannot be effectively connected with the vibration-damping keel 3. Usually, foam is placed between the second fixing arm 32 and the second wall panel 2 before screwing. However, after screwing, it is difficult to remove the foam completely, which will weaken the elasticity of the vibration-damping keel and reduce the sound insulation performance of the wall.

After research and experimentation, the inventors of the present application set the distance between the support edge 35 and the second wall panel 32 to 3mm-12mm (eg 5mm). The side 35 abuts on the second wall panel 2 , thereby limiting the deformation distance of the second fixing arm 32 , ensuring that the screw smoothly penetrates into the second fixing arm 32 of the vibration-damping keel 3 without affecting the sound insulation effect.

In some exemplary embodiments, as shown in FIGS. 2-3 d , the height B1 of the support edge 35 is smaller than the height B of the vibration-damping keel 3 , so that there is a height difference between the support edge 35 and the first fixing arm 31 (the support edge 35 . The distance from the end face of the first fixed arm 31 away from the second fixed arm 32) B2. In some exemplary embodiments, the distance B2 between the supporting edge 35 and the end surface of the first fixing arm 31 away from the second fixing arm 32 is 3 mm-10 mm, so as to ensure that the gap between the supporting edge 35 and the second wall panel 2 is within the range of 3 mm to 10 mm. 3mm-12mm range.

In an exemplary embodiment, the height B1 of the support edge 35 may be 20 mm, and the height B of the vibration reduction keel 3 may be 25 mm, so that the distance between the support edge 35 and the end surface of the first fixing arm 31 away from the second fixing arm 32 B2 can be 5mm.

In some exemplary embodiments, as shown in FIGS. 2-3d , the height B3 of the curling edge 34 is smaller than the height B of the vibration-damping keel 3 , so that there is a gap between the curling edge 34 and the first wall panel 1 , which does not affect the vibration reduction. The sound insulation and noise reduction effect of the keel 3.

In some exemplary embodiments, the height B3 of the rolled edge 34 is less than the height B1 of the support edge 35 . In an exemplary embodiment, the height B of the damping keel 3 may be 25 mm, the height B1 of the supporting edge 35 may be 20 mm, and the height B3 of the curling edge 34 may be 3.5 mm. In other exemplary embodiments, the height B3 of the rolled edge 34 may be equal to or greater than the height B1 of the support edge 35 .

or , a curling edge 34 is arranged on both ends, or a supporting edge 35 is arranged on both ends. When both ends of the first fixed arm 31 and the second fixed arm 32 away from each other are provided with beading, the difference between the beading set on the second fixed arm 32 and the end face of the first fixed arm 31 away from the second fixed arm 32 The distance between them is 3mm-10mm.

In some exemplary embodiments, as shown in FIGS. 2-3 d , the included angle α between the connecting arm 33 and the first fixing arm 31 is 100°-160°. For example, the included angle α can be 110°, 118°, 120°, 122°, 125°, 128°, 130°, 133°, 135°, 140°, 145°, 150°, etc.

The angle α between the connecting arm 33 and the first fixed arm 31 is set to 100°-160° to ensure that the damping keel 3 has sufficient elasticity and rigidity to avoid the insufficient elasticity of the damping keel 3 caused by the too small angle α. The sound effect is poor, or the rigidity of the vibration reduction keel 3 is insufficient due to the excessively large angle α, and the wall panel cannot be stably supported.

In some exemplary embodiments, the width A1 of the first fixing arm 31 is different from the width A2 of the second fixing arm 32 . In an exemplary embodiment, as shown in FIGS. 3 a to 3 d , the width A1 of the first fixing arm 31 is smaller than the width A2 of the second fixing arm 32 .

In some exemplary embodiments, the width A1 of the first fixing arm 31 is approximately equal to half of the width A2 of the second fixing arm 32 .

In an exemplary embodiment, as shown in FIG. 3a and FIG. 3b, the width A of the damping keel 3 may be 90mm, the width A1 of the first fixing arm 31 may be 23mm-27mm (for example, it may be 24mm), and the second The width A2 of the fixed arm 32 may be 50 mm.

In another exemplary embodiment, as shown in FIG. 3c and FIG. 3d, the width A of the vibration-damping keel 3 may be 130mm, the width A1 of the first fixing arm 31 may be 23mm-27mm (for example, it may be 24mm), The width A2 of the two fixing arms 32 may be 50mm.

In the sound insulation wall, the first fixed arm 31 of the shock absorbing keel 3 is connected with the second wall panel 2 on the inner side, and the second fixed arm 32 is connected with the first wall panel 1 on the outer side. When the joints of the two first wall panels 1 correspond to the second fixing arms 32, the edges of the two first wall panels 1 need to be fixed on the second fixing arms 32 at the same time. The edge of the board is at least 10 mm or more. If the second fixing arm 32 is too narrow, it is difficult to fix the two first wall boards 1 . Therefore, the width A2 of the second fixing arm 32 is set larger, which is convenient for fixing by nailing on the edges of the two first wall panels 1 at the joint of the two first wall panels 1 on both sides.

In some exemplary embodiments, the width A of the shock absorbing keel is 50mm-150mm. In an exemplary embodiment, the overall width A of the damping keel 3 may be 64 mm or 90 mm or 130 mm.

In some exemplary embodiments, the height B of the shock absorbing keel is 10mm-50mm. In an exemplary embodiment, the overall height B of the damping keel 3 may be 15mm or 25mm.

In some exemplary embodiments, the wall thickness of the damping keel 3 may be 0.4mm-1mm. In an exemplary embodiment, the wall thickness of the damping keel 3 may be 0.6 mm or 1 mm. The wall thickness of the damping keel 3 is not limited to 0.6mm or 1mm, and can be adjusted as required.

In an exemplary embodiment, the width A of the vibration-damping keel 3 may be about 64 mm, the height B may be 15 mm, and the wall thickness is 0.6 mm, that is, the cross-sectional dimension of the vibration-damping keel 3 is 64×15×0.6 (abbreviated as 64×0.6 mm). Vibration keel), smaller section size, thinner wall thickness, and good elasticity of the vibration reduction keel 3, which can enhance the noise reduction function of medium and low frequency noise. The wall thickness of the shock-absorbing keel 3 is 0.6mm. In order to enhance the noise reduction effect of the shock-absorbing keel 3, the wall thickness of the shock-absorbing keel 3 can be made thinner and the elasticity of the shock-absorbing keel 3 can be enhanced under the condition of ensuring the strength of use. Enhances the ability of low-frequency noise reduction. The better the elasticity of the vibration-damping keel 3, the better the sound absorption effect on low frequencies.

In an exemplary embodiment, the width A of the damping keel 3 may be about 90 mm, the height B may be 25 mm, and the wall thickness is 0.6 mm, that is, the cross-sectional dimension of the damping keel 3 is 90×25×0.6.

In an exemplary embodiment, the width A of the damping keel 3 may be about 130 mm, the height B may be 25 mm, and the wall thickness is 0.6 mm, that is, the cross-sectional dimension of the damping keel 3 is 130×25×0.6.

In some exemplary embodiments, the shock absorbing keel 3 is a steel keel. Specifically, the shock absorbing keel 3 can be made of galvanized steel strip, and can be made of light steel keel made of the same material as the supporting keel 4 .

In some exemplary embodiments, both ends of the damping keel 3 are free ends.

One side (inside) of the vibration-damping keel 3 is connected with the supporting keel 4 and the second wall panel 2, the other side (outside) is connected with the first wall panel 1, and both ends are free ends, and then the vibration-damping keel 3 is suspended. on the support keel 4. In other words, only one side (inside) of the vibration-damping keel 3 is fixedly connected with the building wall (such as ceiling, floor, side wall) or its structural parts (such as supporting keel, heaven and earth keel), and the other side (outside) is only connected The first wall panel 1 has no connecting structural members at both ends and the other side (outside). The suspension setting of the shock-absorbing keel 3 has a larger range of motion and better elasticity, so it is better for low-frequency sound absorption. The better the elasticity of the vibration-damping keel 3 is, the sound insulation of the sound insulation wall not only significantly improves the sound insulation in the low frequency band, but also weakens the matching effect, and the weighted sound insulation is larger.

In some exemplary embodiments, the vibration-damping keels 3 are arranged laterally (as shown in FIG. 2 ) or arranged vertically or obliquely.

The upper and lower ends of the vertically arranged vibration-damping keel 3 will not be connected with the heaven and earth keels, so that the vibration-damping keel 3 is in a suspended state, and both ends are free. The left and right ends of the horizontally arranged vibration-damping keels 3 are not connected to the vertically arranged keels (such as the supporting keels 4 ) of the sound insulation wall.

In some exemplary embodiments, the support keel 4 is a C-shaped keel, an H-shaped keel or a Z-shaped keel.

The sound insulation effect of the shock absorbing keel 3 is described below in combination with three wall structures.

1. Wall structure 1: Sound insulation 1: Rw(C; Ctr)=49(-4;-12)dB

Structure: 9.5 thick (9.5mm thick, the same below) ordinary gypsum board + 12 thick ordinary gypsum board + 75 light steel keel (fill with 50 thick (50mm thick, the same below) rock wool) + 12 thick ordinary paper Gypsum board + 9.5 thick ordinary gypsum board

2. Wall structure 2: Sound insulation 2: Rw(C; Ctr)=53dB

Structure: 9.5 thick ordinary gypsum board + 12 thick ordinary gypsum board + Z-type 75 keel (filled with 50 thick rock wool) + 12 thick ordinary gypsum board + 9.5 thick ordinary gypsum board

3. Wall structure 3: Sound insulation 3: Rw(C; Ctr)=52(-2;-8)dB

Structure: 9.5 thick ordinary gypsum board + 12 thick ordinary gypsum board + 64 vibration reduction keel + 75 light steel keel (filled with 50 thick rock wool) + 64 vibration reduction keel + 12 thick ordinary gypsum board + 9.5 thick Ordinary gypsum board

Table 1

As can be seen from Table 1, compared with the ordinary C-type light steel keel, the use of Z-type keel and vibration reduction keel has a very obvious noise reduction effect on medium and low frequency noise, especially below 1000Hz (Hertz).

Generally speaking, the low-frequency sound insulation of lightweight walls is poor. The use of Z-shaped keel and vibration-damping keel can make up for the disadvantage of poor low-frequency sound insulation performance of gypsum board walls using light steel keels.

It can be seen from Table 1 that in the low frequency range, that is, between 125Hz and 315Hz, the sound absorption and noise reduction effect of the vibration reduction keel is better than that of the Z-shaped keel, which can make up for the noise reduction effect of the Z-shaped keel in the low frequency range. unsatisfactory condition. The sound-insulating wall using the vibration-damping keel has a good sound absorption and noise reduction effect in the low frequency range, and reduces the pollution of low-frequency noise such as motors and fans.

It can be seen from Table 1 that the use of Z-shaped keel and vibration reduction keel also has a good sound absorption and noise reduction effect in the middle and high frequency. In the case of using the same type of gypsum board and the same thickness of rock wool, compared with the traditional C-type light steel keel, the use of Z-type keel and vibration reduction keel improves the sound insulation performance of the wall, and the use of Z-type keel The sound insulation of the wall is increased by 3dB (decibel), and the sound insulation of the wall using the vibration reduction keel is increased by 2dB.

In some exemplary embodiments, as shown in FIG. 1 , between the shock absorbing keel 3 and the first wall panel 1 , between the shock absorbing keel 3 and the second wall panel 2 , and between the supporting keel 4 and the wall unit Equipped with sound insulation bars 5.

A sound insulation strip 5 is arranged between the second fixed arm 32 of the shock absorbing keel 3 and the first wall panel 1 , and a sound insulation strip 5 is arranged between the first fixed arm 31 of the shock absorbing keel 3 and the second wall board 2 , The support keel 4 can be a C-shaped keel, and sound insulation strips 5 are provided between the arms on both sides thereof and the second wall panels 2 of the two wall units respectively. The sound insulation strip 5 can be an elastic strip, such as a rubber strip, a nylon strip, etc., which can be pasted and fixed, or can be formed by a damping sound insulation sealant.

The sound insulation strips 5 are arranged so that there is no hard connection between the shock absorbing keel 3 and the first wall panel 1, between the shock absorbing keel 3 and the second wall panel 2, and between the supporting keel 4 and the second wall panel 2 ( Direct connection), the attenuation of sound energy is strengthened through the sound insulation strip 5, so as to achieve the purpose of further sound insulation.

In some exemplary embodiments, a sound insulation strip 5 is provided between the first fixed arm 31 of the vibration-damping keel 3 and the second wall panel 2 . The gap between them is greater than the distance between the support edge 35 and the end surface of the first fixing arm 31 away from the second fixing arm 32 . In some exemplary embodiments, the sound insulation bar 5 is not provided between the first fixed arm 31 of the vibration-damping keel 3 and the second wall panel 2 , at this time, the supporting edge 35 of the second fixed arm 32 is connected to the second wall panel 2 The gap therebetween is equal to the distance between the support edge 35 and the end surface of the first fixing arm 31 away from the second fixing arm 32 . Wherein, the thickness of the sound insulation strip 5 may be 2mm-5mm.

In some exemplary embodiments, as shown in FIG. 1 , the shock absorbing keel 3 and the first wall panel 1 are fixed by a first fastener 81 , and the shock absorbing keel 3 , the second wall panel 2 and the supporting keel 4 are fixed by a second fastener 81 . The fasteners 82 are fixed, the second wall panel 2 and the support keel 4 are fixed by the third fasteners 83, the first fasteners 81 and the second fasteners 82 are arranged in a staggered manner, and the first fasteners 81 and the third fasteners are staggered. Firmware 83 interleaves settings. The first fastener 81 , the second fastener 82 and the third fastener 83 may be screws.

The first fastener 81 , the second fastener 82 and the third fastener 83 are staggered to each other, so that the entire wall does not form a metal sound bridge of self-tapping screws + keels, which blocks the sound bridge of sound waves. Sound transmission, for the purpose of sound insulation. In addition, the sound insulation strips 5 between the shock absorbing keel 3 and the first wall panel 1, between the shock absorbing keel 3 and the second wall panel 2, and between the supporting keel 4 and the second wall panel 2, make the second wall There is no hard connection (direct connection) between the board 2, the first wall board 1 and the shock absorbing keel 3 and the supporting keel 4, and there is no sound bridge, which achieves the purpose and effect of better isolating the sound bridge and improves the wall isolation. sound effect.

In some exemplary embodiments, the two second wall panels 2 of the wall units on both sides have the same thickness, the two first wall panels 1 of the wall units on both sides have the same thickness, and the second wall panels have the same thickness. 2 is the same as or different from the thickness of the first wall panel 1 .

In some exemplary embodiments, the plate thicknesses of the two second wall panels 2 of the wall units on both sides are different, and the plate thicknesses of the two first wall panels 1 of the wall units on both sides are different, and are located on the support keel. The thickness of the second wall panel 2 of the wall unit on one side of 4 is the same as that of the first wall panel 1 of the wall unit on the other side of the support joist 4 .

The thicknesses of the two second wall panels 2 may be the same or different, the thicknesses of the two first wall panels 1 may be the same or different, and the thicknesses of the second wall panels 2 and the first wall panels 1 may be the same or different. The second wallboard 2 and the first wallboard 1 may be 9.5mm, 12mm or 15mm thick gypsum board, such as fiberglass felt gypsum board, fiber gypsum board, paper gypsum board or paperless gypsum board. For example, both the second wallboard 2 and the first wallboard 1 can be gypsum boards with a thickness of 12 mm. Alternatively, the second wallboard 2 on one side of the support keel 4 (the lower side in FIG. 1 ) is a gypsum board with a thickness of 9.5 mm, and the first wallboard 1 is a gypsum board with a thickness of 12 mm; The second wallboard 2 (upper side in FIG. 1 ) is a 12mm thick gypsum board, and the first wallboard 1 is a 9.5mm thick gypsum board. Alternatively, the second wallboard 2 on one side of the support keel 4 (the lower side in FIG. 1 ) is a gypsum board with a thickness of 12 mm, and the first wallboard 1 is a gypsum board with a thickness of 15 mm; on the other side of the support keel 4 ( The second wallboard 2 as shown in the upper side in FIG. 1 is a gypsum board with a thickness of 15 mm, and the first wallboard 1 is a gypsum board with a thickness of 12 mm.

The thickness and surface density of the second wall panel 2 and the first wall panel 1 are different, and when the sound energy propagates through different media and between different media, the attenuation speed is faster than that of the same material, so through this structural combination, It can attenuate more sound energy and achieve the purpose of sound insulation.

The sound insulation effect of wall panels with different thicknesses and areal densities is described below in combination with three wall structures.

1. Wall structure 4: Sound insulation 4: Rw(C; Ctr)=51(-2;-7)dB

Structure: 15 thick ordinary gypsum board + 12 thick ordinary gypsum board + 75 light steel keel (fill with 50 thick rock wool) + 12 thick ordinary gypsum board + 15 thick ordinary gypsum board

2. Wall structure 5: Sound insulation 5: Rw(C; Ctr)=54(-2;-7)dB

Structure: 15 thick ordinary gypsum board + 12 thick ordinary gypsum board + 64 vibration reduction keel + 75 light steel keel (filled with 50 thick rock wool) + 64 vibration reduction keel + 12 thick ordinary paper gypsum board + 15 thick Ordinary gypsum board

3. Wall structure 6: Sound insulation 6: Rw(C; Ctr)=50(-3;-10)dB

Structure: 12 thick ordinary gypsum board + 12 thick ordinary gypsum board + 75 light steel keel (fill with 50 thick rock wool) + 12 thick ordinary gypsum board + 12 thick ordinary gypsum board

Table 2

It can be seen from Table 2 that two kinds of gypsum boards with a thickness of 12 mm and 15 mm have two different areal densities and have different resonance frequencies. The resonant frequency of a 15mm thick gypsum board wall is basically lower than the minimum 100Hz. Outside the sensitive range of hearing, it is appropriate to choose a 15mm thick gypsum board in an area dominated by low-frequency noise. The sound insulation performance of the wall has little effect. The resonant frequency of the wall composed of 12mm thick gypsum board has a great influence on the sound insulation performance near 100Hz, causing the sound insulation at low frequencies of 100Hz, 125Hz and 200Hz to drop more than that of the 15mm thick gypsum board, mainly because of the resonant frequency. The reason is that the sound insulation at 200Hz and 250Hz other than the resonance frequency is close, which is because of the damping control.

The resonant frequency of the double-layered wall is related to the area density of the two-layer panels and the spacing between the panels. The larger the area density and the larger the spacing, the smaller the resonant frequency. Therefore, when designing the gypsum board sound insulation wall, the denser gypsum board should be used as much as possible, so that the resonance frequency should be lower than 100Hz as much as possible.

At the same time, according to the law of mass, there is a general rule for the sound insulation of partition walls, that is, the heavier the material (higher areal density), the better the sound insulation effect. For double-layered gypsum board walls, the law of quality plays an important role, that is, increasing the number of layers or thickness of the board can increase the sound insulation.

In addition, it can be seen from Table 2 that the sound insulation of the 12-thick + 15-thick gypsum board combination is higher than that of the 12-thick + 12-thick gypsum board combination, especially at low frequencies (below 160 Hz).

Gypsum boards with different areal densities have different fit effects fc, and the sound insulation will start to decrease if the frequency exceeds its fit effect fc. The coincidence frequency fc of the same double-layered plate is basically the same as that of the single-layered plate, but the coincidence effect is more severe, and the coincidence valley will become deeper. If plates with different thicknesses are used for superimposition, the matching valleys (matching frequencies) will be staggered from each other, and each matching valley is shallow, which is beneficial to improve the sound insulation performance.

The higher the surface density and the thinner the wallboard, the better the sound insulation performance. The higher the density, the greater the sound insulation. The result of the combined effect of the coincidence effect.

The violent matching effect of double-layer boards is very obvious, which will cause the sound insulation of the partition wall composed of double-layer 15mm thick boards to be lower than that of the partition wall composed of double-layer 12mm thick boards. The surface density of the partition wall with a layer of 12mm and a layer of 15mm thick plates is lower than that of the double-layer 15mm partition wall, but sometimes the sound insulation will increase, which is the result of the coincidence effect.

In some exemplary embodiments, as shown in FIG. 4 , the wall unit further includes a decorative panel 6 , and the decorative panel 6 is fixed on the side of the first wall panel 1 away from the second wall panel 2 (that is, the side of the first wall panel 1 ). Outer side), a third sound insulation cavity 73 is formed between the decorative panel 6 and the first wall panel 1 .

A third sound insulation cavity 73 is formed between the decorative panel 6 and the first wall panel 1 , so that the wall has two more air layers, so that the wall has five air gaps in total. The vibration of the air in the air layer attenuates the sound energy, and at the same time, the sound wave is converted between different media, which increases the reflection and attenuation of the sound wave, achieves the purpose of sound insulation and noise reduction, and further improves the sound insulation performance of the wall.

In some exemplary embodiments, as shown in FIG. 4 , the decorative panel 6 and the first wall panel 1 are bonded and fixed by a plurality of adhesive groups 61 , and a leveling gasket is provided between the decorative panel 6 and the first wall panel 1 . 62.

In some exemplary embodiments, the decorative panel 6 is located at the outermost layer, which can be a gypsum-based decorative board (Luban universal board), which can be bonded to the first wallboard 1 through an adhesive group (gypsum-based gypsum adhesive group) 61 . . A leveling washer 62 is also provided between the decorative panel 6 and the first wall panel 1 .

The decorative panel 6 and the first wall panel 1 are bonded and fixed by a plurality of adhesive groups 61 , so that a third sound insulation cavity 73 is formed between the decorative panel 6 and the first wall panel 1 . A leveling gasket 62 is arranged between the decorative panel 6 and the first wall panel 1, which can ensure that the panel surface of the decorative panel 6 is vertical and will not tilt, so that when multiple walls are connected, the decorative panel 6 can be kept flush; The leveling spacer 62 prevents the gypsum agglomerate from being too flattened and rapidly losing water resulting in insufficient bond strength.

In addition, the decorative panel 6 is bonded to the first wall panel 1 by sticking, which ensures that the entire wall does not form a metal sound bridge of self-tapping screws and keels, which blocks the sound transmission of the sound bridge and achieves sound insulation. the goal of. In addition, the thickness and surface density of the decorative panel 6 using the gypsum-based decorative board are different from those of the second wallboard 2 and the first wallboard 1 using the paper-faced gypsum board, so that when the sound energy is transmitted through different media and between different media The speed of attenuation is faster, which can attenuate more sound energy and achieve better sound insulation effect.

In some exemplary embodiments, the sticky mass 61 is in the shape of dots or strips. In other exemplary embodiments, the sticky mass 61 may also have other shapes, such as a block shape, etc., which is not limited in this application.

In some exemplary embodiments, as shown in FIG. 5 , the plurality of sticky groups 61 are arranged in a rectangular array.

In some exemplary embodiments, as shown in FIG. 5 , the sticky mass 61 is point-shaped (circular), and has a diameter of ≥50 mm and a thickness of ≥5 mm. The thickness of the sticky mass 61 is greater than or equal to 5 mm, so that the thickness of the third sound insulating cavity 73 is greater than or equal to 5 mm.

In some exemplary embodiments, the diameter of the sticky mass 61 may be 50mm-100mm, such as: 55mm, 60mm, 65mm, 70mm, 75mm, 80mm, 85mm, 90mm, 95mm, and the like.

In some exemplary embodiments, the thickness of the sticky mass 2 may be 5mm-10mm, such as 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8mm, 8.5mm, 9mm, 9.5mm, 10mm, and the like.

In some exemplary embodiments, the distance between adjacent sticky groups 61 (the distance between center points) is less than or equal to 300 mm. As shown in FIG. 5 , for a plurality of sticky masses 61 arranged in a rectangular array, the distance S3 between two adjacent sticky masses 61 in the lateral direction is ≤300 mm, and the distance between two adjacent sticky masses 61 in the longitudinal direction S4≤ 300mm.

In some exemplary embodiments, S3 can be equal to S4, for example, S3 and S4 can be 200mm-300mm, such as 220mm, 240mm, 260mm, 280mm, and the like.

In some exemplary embodiments, the distance between the sticky mass 61 and the edge of the decorative panel 6 is 30mm-60mm. As shown in FIG. 5 , the distance between the sticky mass 61 and the vertical edge of the decorative panel 6 is S1, the distance between the sticky mass 61 and the lateral edge of the decorative panel 6 is S2, and the value range of S1 and S2 is 30mm -60mm.

In some exemplary embodiments, S1 and S2 may be equal, for example, S1 and S2 may be 35mm, 40mm, 45mm, 50mm, 55mm, and the like.

It should be understood that the diameter, thickness, and spacing S1-S4 of the sticky mass 61 are not limited to the above, and can be adjusted as required.

In some exemplary embodiments, as shown in FIG. 4 , the thickness of the third sound insulation cavity 73 (ie the distance between the first wall panel 1 and the decorative panel 6 in FIG. 4 ) is smaller than that of the second sound insulation cavity 72 thickness (that is, the distance between the second wall panel 2 and the first wall panel 1 in FIG. 4 ), the thickness of the second sound insulation cavity 72 is smaller than the thickness of the first sound insulation cavity 71 (ie, the two second sound insulation cavity 71 in FIG. 4 ) spacing between wall panels 2) thickness.

In some exemplary embodiments, the support keel 4 in the first sound insulation cavity 71 is a C-shaped keel with a size of 75×50×0.6 (width×height×wall thickness, unit: mm). The thickness of the cavity 71 may be about 75mm, or slightly larger than the width of the support keel 4 (eg, 76-77mm), the thickness of the second sound insulation cavity 72 may be about 15mm or 25mm, and the thickness of the third sound insulation cavity 73 may be is about 5mm.

Sound insulation cavities with different thicknesses have good sound insulation and noise reduction effects on sound waves of different frequencies. The combination of three sound insulation cavities with different thicknesses can achieve good sound insulation and noise reduction effects on sound waves in a wide frequency range. .

In some exemplary embodiments, as shown in FIG. 1 and FIG. 4 , at least one of the first sound insulation cavity 71 , the second sound insulation cavity 72 and the third sound insulation cavity 73 is filled with There is a sound absorbing layer 9 formed of sound absorbing material. For example, porous sound-absorbing materials such as glass wool, rock wool, or ceramic wool can be inserted into the first sound insulation cavity 71 , the second sound insulation cavity 72 , and the third sound insulation cavity 73 .

In some exemplary embodiments, the thickness of the sound absorption layer 9 is smaller than the thickness of the sound insulation cavity where it is located, so that there is a gap between the cavity wall of the sound insulation cavity and the sound absorption material filled in the sound insulation cavity, Among them, the gap may not be less than 20mm, of course, the size of the gap can also be adjusted according to requirements.

In some exemplary embodiments, as shown in FIGS. 1 and 4 , a cavity wall of the first sound insulation cavity 71 (the cavity wall located on the upper side in FIGS. 1 and 4 ) and the sound absorbing layer 9 has a cavity wall. The gap is not less than 20mm, so that the sound-absorbing layer 9 is not tightly plugged in the first sound insulation cavity 71, so that the sound-absorbing layer 9 will not form a sound bridge between the two second wall panels 2, so as to achieve a better sound quality. Sound absorption and noise reduction. The other cavity wall of the first sound insulation cavity 71 (the cavity wall on the lower side in FIGS. 1 and 4 ) can be in contact with the sound absorbing layer 9 to facilitate the filling and installation of the sound absorbing layer 9 . Of course, the first sound insulation cavity 71 may have a gap between only one cavity wall (the cavity wall located on the upper side or the lower side in FIG. 1 and FIG. 4 ) and the sound absorbing layer 9 filled in the sound insulation cavity, or , the two cavity walls (the cavity walls located on the upper side and the lower side in FIG. 1 and FIG. 4 ) have gaps between them and the sound absorbing layer 9 filled in the sound insulation cavity.

In some exemplary embodiments, in the wall unit, the side panels of two adjacent layers of wall panels are staggered, and the side panels of the second wall panels 2 of the wall units on both sides are staggered.

In the multi-layer wall panels of the composite sound insulation wall, the side panel edges of two adjacent layers of wall panels are staggered, and the side panel edges of non-adjacent wall panels may be flush or staggered. That is, the decorative panels 6 are staggered with the side panels of the adjacent first wall panels 1 , the second wall panels 2 are staggered with the side panels of the adjacent first wall panels 1 , and the two adjacent second walls are staggered. The side panels of panel 2 are arranged in a staggered manner, so that during the actual installation and construction, the joints formed at the adjacent two-layer wall panels are arranged in a staggered manner to realize staggered installation and avoid sound leakage through the seam, which affects the sound insulation effect.

In some exemplary embodiments, when different sound insulation composite walls are connected, the joints between the second wall panels 2 and the joints between the first wall panels 1 are filled with sealing material.

During the actual installation and construction, the side of the sound insulation composite wall can be connected with another sound insulation composite wall, or with the side wall, so that a connection is formed at the side walls of the second wall panel 2 and the first wall panel 1. The joint can be sealed with caulking gypsum (such as lime gypsum and other materials) to further prevent sound leakage at the joint.

In some exemplary embodiments, as shown in FIG. 6 , the sound insulation composite wall further includes a junction box 10 installed on the wall unit, located on the wall units on both sides and between the adjacent two junction boxes 10 . A sound insulation layer 41 is interposed therebetween. Wherein, the sound insulation layer 41 may be formed of a sound insulation material.

The sound insulation layer 41 is arranged on the wall units on both sides and between the two adjacent junction boxes 10 , that is, the two adjacent junction boxes 10 located on the wall units on both sides and the adjacent two junction boxes 10 are respectively located in the sound insulation layer 41 On both sides, the sound waves are prevented from entering from the junction box 10 on one side, and after passing through the first sound insulation cavity 71, they are directly transmitted from the junction box 10 on the other side, and the sound insulation layer 4 can block the sound waves on both sides. The transmission between the junction boxes 10 avoids sound leakage at the junction box 10, so that the composite sound insulation wall has a good sound insulation effect.

In some exemplary embodiments, as shown in FIG. 6 , one or more supporting keels 4 are provided on the wall units on both sides and between two adjacent junction boxes 10 . At least one of 4 is provided with a sound insulation layer 41 .

In some exemplary embodiments, as shown in FIG. 6 , the sound insulating layer 4 is perpendicular to the wall units on both sides, and both ends of the sound insulating layer 4 extend to the wall units on both sides respectively. The sound insulation layer 4 is in contact with the wall units on both sides to prevent sound leakage from the junction box 10 after sound waves pass through the gap between the sound insulation layer 4 and the wall unit.

In other exemplary embodiments, the end of the sound insulation layer 4 may not be in contact with the wall unit, and the gap between the two may be sealed with sealant. The gap between the sound insulation layer 4 and the wall unit is sealed by the sealant to prevent sound leakage at the gap, so that the sound insulation composite wall still has good sound insulation performance.

In some exemplary embodiments, as shown in FIG. 6 , the junction box 10 is embedded and arranged through the wall unit, and a sealing member 102 may be provided at the gap between the junction box 10 and the wall unit.

As shown in FIG. 6 , the junction box 10 passes through the decorative panel 6 , the first wall panel 1 and the second wall panel 2 . The gap between the junction box 10 and the decorative panel 6 can be filled with sealant.

The junction box 10 located on the side of the support keel 4 (upper side in FIG. 6 , the left side of the paper) penetrates the decorative panel 6 and the first side of the support keel 4 (upper side in FIG. A wall panel 1 and a second wall panel 2, the junction box 10 located on the other side of the support keel 4 (the lower side in FIG. 6, the right side of the paper) penetrates through the other side of the support keel 4 (the lower side in FIG. 6 ) , the right side of the paper) the decorative panel 6 , the first wall panel 1 and the second wall panel 2 , so that the sound insulation effect at the junction box 10 is weakened. In order to avoid sound leakage at the junction box 10, two junction boxes 10 located on both sides of the sound insulation composite wall and arranged adjacently are installed on both sides of the support keel 4 provided with the sound insulation layer 41, that is, two wiring There is at least one support keel 4 between the boxes 10, and a sound insulation layer 41 is arranged on the support keel 4 (eg, a layer of gypsum board is installed on the support keel 4 to form the sound insulation layer 41), so as to achieve a good sound insulation effect.

In some exemplary embodiments, as shown in FIG. 6 , the outside of the junction box 10 is provided with an outer casing 101 with one end open, which can wrap the other five sides of the junction box 10 except the front side. At least one shell of the outer casing 101 is made of sound insulation material. Specifically, the outer shell 101 includes two layers of shells, wherein the inner shell can be made of rubber and wrapped outside the box of the junction box 10 , and the outer shell can be made of gypsum board and wrapped outside the inner shell . Of course, the outer shell 101 is not limited to include two-layer shells, and the material of the shell is not limited to rubber and gypsum board.

In some exemplary embodiments, the box body of the junction box 10 is made of sound insulating material. Specifically, the box body of the junction box 10 can be made of a special sound insulation junction box body 10 made of materials such as gypsum.

The outer casing 101 and the box body made of sound insulation material can prevent sound from being transmitted from the junction box 10, and further enhance the sound insulation effect of the wall body.

In some exemplary embodiments, as shown in FIG. 7 , the sound insulation composite wall further includes a sky keel 11 arranged above, a ground keel 12 arranged below, and a vertical keel arranged on the side. The sky keel 11, The ground keel 12 and the vertical keel 14 are provided with sound insulation materials.

When the wall is actually installed, the wall is connected with the upper floor through the sky keel 11, with the lower floor through the ground keel 12, and connected with the side wall through the vertical keel 14. The sky keel 11, the ground keel 12, and the vertical keel can be U-shaped For keels, C-shaped keels, etc., sound insulation materials such as sound insulation strips or sound insulation sealants can be installed on the bottom surface of U-shaped keels and C-shaped keels. At the same time, the joints around the wall are sealed with caulking plaster and other materials. , to prevent sound leakage around the wall, resulting in a decrease in the sound insulation effect of the wall.

In some exemplary embodiments, the vertical distance between the horizontally arranged shock absorbing keels 3 may be no greater than 600 mm, and the horizontal distance between the vertically arranged supporting keels 4 may be 600 mm. Figure 7 shows the arrangement of each keel in a 3.0-meter high sound insulation composite wall. A plurality of shock absorbing keels 3 are arranged at equal intervals from top to bottom, and a plurality of supporting keels 4 are arranged at equal intervals from left to right. The sound insulation composite wall also includes through keels 13. After the skeletons of the support keels 4 are built, the through keels 13 pass through each of the support keels 4, so as to connect all the support keels 4 together to form a whole.

In the sound insulation composite wall of the embodiment of the present application, sound absorption is achieved by setting shock-absorbing keels, blocking sound bridges, sound insulation cavities, multi-layer wall panels using a combination of various materials, and setting sound absorbing materials to attenuate sound waves; Install staggered joints, avoid through joints, seal junction boxes, and seal around the wall to prevent sound leakage and achieve sound insulation. The sound insulation of the sound insulation composite wall is at least 1-2 decibels higher than the sound insulation of the existing wall for sound waves above 100 Hz or medium and high frequency.

Although the embodiments disclosed in the present application are as above, the described contents are only the embodiments adopted to facilitate the understanding of the present application, and are not intended to limit the present application. Any person skilled in the art to which this application belongs, without departing from the spirit and scope disclosed in this application, can make any modifications and changes in the form and details of the implementation, but the scope of patent protection of this application still needs to be The scope defined by the appended claims shall prevail.

Claims (17)

1. A sound-insulating composite wall, characterized in that it comprises: a vertical support keel and a wall unit arranged on both sides of the support keel, wherein the wall unit comprises a first wall panel, a second wall A panel and a shock absorbing keel arranged between the first wall panel and the second wall panel, the first wall panel is located on the side of the second wall panel away from the supporting keel, and all the A first sound insulation cavity is formed between the wall units, and a second sound insulation cavity is formed between the first wall panel and the second wall panel. 2 . The sound insulation composite wall according to claim 1 , wherein the shock absorbing keel comprises a first fixing arm, a connecting arm and a second fixing arm which are connected in sequence, and the first fixing arm and the The second fixed arms are parallel to each other, the connecting arms are arranged obliquely, and the end of the connecting arm connected to the second fixed arm is inclined toward the side away from the first fixed arm, and the first fixed arm is connected to the second fixed arm. The second wall panel is fixedly connected, and the second fixing arm is fixedly connected to the first wall panel. 3 . The sound insulation composite wall according to claim 2 , wherein one end of the second fixing arm away from the first fixing arm is provided with a supporting edge, and the supporting edge faces the second wall panel. 4 . is bent, and there is a gap between the supporting edge and the second wall panel; The supporting edge is a straight edge arranged vertically relative to the second fixed arm, or the supporting edge is a slanted edge arranged obliquely relative to the second fixed arm, and the supporting edge and the second fixed arm The included angle between them is an obtuse angle. 4 . The sound insulation composite wall according to claim 3 , wherein the gap between the supporting edge and the second wall panel is 3 mm-12 mm. 5 . 5 . The sound insulation composite wall according to claim 2 , wherein the end of the first fixing arm away from the second fixing arm is provided with a curling edge, and the curling edge faces the first wall panel. 6 . The side where it is located is bent, and there is a gap between the curling edge and the first wall panel. 6 . The sound insulation composite wall according to claim 1 , wherein both ends of the shock absorbing keel are free ends. 7 . 7. The sound insulation composite wall according to any one of claims 1-5, characterized in that, between the shock absorbing keel and the first wall panel, and between the shock absorbing keel and the second wall Sound insulation strips are arranged between the wall panels and between the support keel and the wall unit. 8. The sound insulation composite wall according to any one of claims 1-5, wherein the shock absorbing keel and the first wall panel are fixed by a first fastener, and the shock absorbing keel is , The second wall panel and the support keel are fixed by a second fastener, the second wall panel and the support keel are fixed by a third fastener, and the first fastener is connected to the first fastener. The two fasteners are staggered, and the first fastener and the third fastener are staggered. 9 . The sound insulation composite wall according to claim 1 , wherein the second wall panels of the wall units on both sides have the same thickness, and the The thickness of the first wall panel of the wall unit is the same, and the thickness of the second wall panel and the first wall panel are the same or different; Or, the thicknesses of the second wall panels of the wall units on both sides are different, the thicknesses of the first wall panels of the wall units on both sides are different, and the wall units on one side have different thicknesses. The thickness of the second wall panel of the unit is the same as that of the first wall panel of the wall unit on the other side. 10. The sound insulation composite wall according to any one of claims 1-5, wherein the wall unit further comprises a decorative panel, and the decorative panel is fixed on the first wall panel away from the On one side of the second wall panel, a third sound insulation cavity is formed between the decorative panel and the first wall panel. 11 . The sound insulation composite wall according to claim 10 , wherein the decorative panel and the first wall panel are bonded and fixed by a plurality of adhesive groups, and the decorative panel and the first wall There are leveling spacers between the plates. 12. The sound insulation composite wall according to claim 10, wherein the thickness of the third sound insulation cavity is smaller than the thickness of the second sound insulation cavity, and the thickness of the second sound insulation cavity is smaller than that of the second sound insulation cavity. The thickness is smaller than the thickness of the first sound insulating cavity. 13. The sound insulation composite wall according to claim 10, wherein at least one of the first sound insulation cavity, the second sound insulation cavity and the third sound insulation cavity is insulated The sound cavity is filled with a sound absorption layer formed of sound absorption material, and the thickness of the sound absorption layer is smaller than the thickness of the sound insulation cavity in which the sound absorption layer is located. 14. The sound insulation composite wall according to any one of claims 1 to 5, wherein in the wall unit, the side panels of two adjacent layers of wall panels are arranged in a staggered manner; The side panels of the second wall panels of the wall units on both sides are arranged in a staggered manner. 15. The sound insulation composite wall according to any one of claims 1-5, characterized in that, the sound insulation composite wall further comprises a junction box installed on the wall unit, the junction boxes located on both sides. A sound insulation layer is provided on the wall unit and between two adjacent junction boxes. 16 . The sound insulation composite wall according to claim 15 , wherein one or more supporting keels are arranged on the wall units located on both sides and between two adjacent junction boxes, 16 . The sound insulation layer is provided on at least one of the one or more support keels. 17. The sound-insulating composite wall according to claim 15, wherein an outer casing with one end open is provided on the outside of the junction box, and the outer casing comprises at least one layer of casing made of sound-insulating material or, the box body of the junction box is made of sound insulation material.

Images