WO2022000954A1

WO2022000954A1 - Keel, sound insulating wall body unit and wall body

Info

Publication number: WO2022000954A1
Application number: PCT/CN2020/130450
Authority: WO
Inventors: 王兵; 董占波; 刘明海; 徐正东; 王洪波
Original assignee: 北新集团建材股份有限公司; 中建材创新科技研究院有限公司
Priority date: 2020-06-29
Filing date: 2020-11-20
Publication date: 2022-01-06
Also published as: CN111827528A

Abstract

A keel, a sound insulating wall body unit and a wall body. The keel comprises a first fixed arm, a connection arm and a second fixed arm which are connected in sequence; the first fixed arm and the second fixed arm are provided in parallel; the connection arm is provided in an inclined manner; and one end of the connection arm connected to the second fixed arm is inclined towards a side away from the first fixed arm. The sound insulating wall body unit comprises a first wall board, a second wall board and the keel; the first wall board is connected to the second wall board by means of the keel; and a first cavity is formed between the first wall board and the second wall board. The wall body comprises a first wall body unit, a second wall body unit, a support keel and the keels; the keels are fixed on both sides of the support keel; and the keels on both sides are connected to the first wall body unit and the second wall body unit respectively.

Description

A keel, sound insulation wall unit and wall

technical field

This article relates to, but is not limited to, the field of construction technology, especially a keel, a sound insulation wall unit and a 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.

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.

An embodiment of the present application provides a keel, which includes a first fixing arm, a connecting arm and a second fixing arm connected in sequence, the first fixing arm and the second fixing arm are arranged in parallel, the connecting arm is arranged obliquely, and One end of the connecting arm connected with the second fixing arm is inclined toward the side away from the first fixing arm.

An embodiment of the present application provides a sound insulation wall unit, comprising a first wall panel, a second wall panel and the above-mentioned keel, wherein the first wall panel and the second wall panel are connected by the keel, A cavity is formed between the first wall panel and the second wall panel.

An embodiment of the present application provides a wall, including a first wall unit, a second wall unit, a support keel and the above-mentioned keel, the keels are fixed on both sides of the support keel, and the keels are fixed on both sides of the support keel. The keels are respectively connected with the first wall unit and the second wall unit.

Other aspects will become apparent upon reading and understanding of the drawings and detailed description.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is the structural representation one of the keel of the embodiment of the application;

Fig. 2 is the structural representation two of the keel of the embodiment of the application;

Fig. 3 is the structural schematic diagram three of the keel of the embodiment of the application;

Fig. 4 is the structural representation four of the keel of the embodiment of the application;

5 is a schematic diagram of a partial structure of a sound insulation wall unit according to an embodiment of the present application;

6 is a schematic diagram of a partial structure of a wall according to an embodiment of the present application;

FIG. 7 is a schematic structural diagram of a wall according to an embodiment of the present application.

Reference number:

1: first wall panel; 2: second wall panel; 3: keel; 31: first fixed arm; 32: second fixed arm; 33: connecting arm; 34: crimping; 35: supporting edge; 4: supporting keel; 5: sound insulation strip; 61: first cavity; 62: second cavity; 7: screw; 8: sound absorbing material; 9: first wall unit; 10: second wall unit.

detail

The embodiments of the present application will be described below with reference to the accompanying drawings. The keel involved in this article can be, but not limited to, a vibration-damping keel, and the wall can be, but not limited to, a sound-insulating wall.

In modern buildings, 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. The embodiment of the present application provides a keel, a sound insulation wall unit and a wall body. The keel can convert sound energy into mechanical vibration energy, and then convert it into heat energy and dissipate it, so as to achieve the purpose of sound insulation and noise reduction. The body has good sound insulation effect.

The embodiment of the present application provides a keel 3, as shown in FIG. 1-FIG. 4, comprising a first fixed arm 31, a connecting arm 33 and a second fixed arm 32 connected in sequence, the first fixed arm 31 and the second fixed arm 32 In parallel arrangement, the connecting arm 33 is arranged obliquely, and the end of the connecting arm 33 connected with the second fixing arm 32 is inclined toward the side away from the first fixing arm 31 .

As shown in FIG. 1-FIG. 4, the first fixed arm 31 and the second fixed arm 32 are arranged horizontally, and there is a horizontal and vertical interval between them. The extension direction of the fixed arm is taken as the horizontal direction, and the two fixed arms are located in the horizontal direction. The vertical direction perpendicular to the extending direction in the configuration plane makes the first fixed arm 31 and the second fixed arm 32 in a staggered state (that is, the projection of the first fixed arm 31 on the plane where the second fixed arm 32 is located and the second fixed arm 32 is separated), the first end (the left end in FIG. 1-FIG. 4) of the connecting arm 33 is connected with the first fixed arm 31, and the second end (the right end in FIG. 1-FIG. 4) is connected with the second fixed arm 32 For connection, the second end of the connecting arm 33 is inclined toward the side away from the first fixing arm 31 (the right side in FIGS. 1-4 ). Among them, the wall thickness of the keel 3 is ignored in FIGS. 2 and 4 .

As shown in FIG. 1 , one end of the first fixed arm close to the second fixed arm is connected to the connecting arm, and one end of the second fixed arm close to the first fixed arm is connected to the connecting arm.

The keel 3 is roughly in the shape of a "zigzag", and the roughly zigzag shape here means that there are two parallel fixed arms and an inclined connecting arm connecting the two, similar to the "zigzag"-shaped structure , but the difference is that there is a horizontal interval between the two fixed arms, and the included angle between the fixed arm and the connecting arm is not an acute angle. The keel provided by the embodiment of the present application has good elasticity. When energy such as sound waves acts on the keel 3 or the wall on which the keel 3 is installed (as shown in Figures 5-7), the keel 3 will vibrate, and the sound energy will be vibrated by the vibration. It is converted into solid mechanical vibration energy, and then 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 keels (such as C-type keels, Z-type keels), the keel 3 provided in the embodiment of the application has better elasticity, and the wall panels connected to both sides of the keel 3 provided in the embodiment of the application are non-rigid connections. , when the wall panel on one side vibrates, it is not easy 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 frequency, the keel 3 provided in the embodiment of the present application has better sound absorption effect at low frequency than ordinary light steel keel, especially between 100 Hz and 300 Hz, The sound absorption effect of the keel 3 provided by the embodiment of the present application is better, which can make up for the deficiency of the low frequency sound absorption performance of the ordinary light steel keel.

In some exemplary embodiments, as shown in FIGS. 1-4 , the end of the second fixing arm 32 away from the first fixing arm 31 is provided with a supporting edge 35 , and the supporting edge 35 is bent toward the side where the first fixing arm 31 is located. , and the height of the support edge 35 is less than the height of the keel 3 .

As shown in FIGS. 1 to 4 , one end of the second fixed arm 32 away from the first fixed arm 31 (the right end in FIGS. 1 to 4 ) is provided with a support edge 35 , and the support edge 35 faces the place where the first fixed arm 31 is located. One side (upper side in FIGS. 1-4 ) is bent, and 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 B2 between the support edge 35 and the first fixed arm 31 .

The support edge 35 can increase the rigidity of the joist 3 so that the joist 3 can be used to connect wall panels. There is a height difference B2 between the support edge 35 and the first fixed arm 31, so that when the two sides of the keel 3 are connected to the wall panel, there is a gap between the support edge 35 and the second wall panel 2 connected to the first fixed arm 31 (eg 5 ), so that the setting of the supporting edge 35 does not affect the vibration characteristics of the keel 3 under the action of sound waves, so as not to affect the sound insulation and noise reduction effect of the keel 3 .

In some exemplary embodiments, the distance B2 between the support edge 35 and the end surface of the first fixing arm 31 away from the second fixing arm 32 is 3 mm to 10 mm. In some exemplary embodiments, B2 may be 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, and the like.

In an exemplary embodiment, the height B1 of the supporting edge 35 may be 20 mm, and the height B of the keel 3 may be 25 mm, so that 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 may be 25 mm. is 5mm.

In some exemplary embodiments, the included angle β between the supporting edge 35 and the second fixing arm 32 may be 70° to 160°.

In an exemplary embodiment, as shown in FIG. 1 and FIG. 2 , the support edge 35 is a straight edge arranged perpendicularly to the second fixed arm 32 , that is, the angle β between the support edge 35 and the second fixed arm 32 is 90°. °.

In some exemplary embodiments, as shown in FIG. 3 and FIG. 4 , the supporting edge 35 is a slanted edge disposed relatively to the second fixing arm 32 , and the included angle β between the supporting edge 35 and the second fixing arm 32 is Obtuse angle. In some exemplary embodiments, the value range of β may be 100° to 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° to 90°, such as 75°, 80°, 85°, and the like.

In some exemplary embodiments, as shown in FIGS. 1-4 , one end of the first fixing arm 31 away from the second fixing arm 32 is provided with a curling edge 34 , and the curling edge 34 is bent toward the side where the second fixing arm 32 is located. , and the height of the curling edge 34 is smaller than the height of the keel 3 .

As shown in FIGS. 1 to 4 , one end of the first fixing arm 31 away from the second fixing arm 32 (the left end in FIGS. 1 to 4 ) is provided with a curling edge 34 , and the curling edge 34 faces a side where the second fixing arm 32 is located. The side (the lower side in FIGS. 1-4 ) is bent, and the height B3 of the bead 34 is smaller than the height B of the keel 3 .

The setting of the rolled edge 34 is similar to the reinforcing ribs, which can improve the rigidity of the keel 3 . The curling edge 34 is arranged in cooperation with the supporting edge 35, which can better improve the rigidity of the keel 3 and can support the wall panel. The height B3 of the curling edge 34 is less than the height B of the keel 3. When the two sides of the keel 3 are connected to the wall panels, there is a gap between the curling edge 34 and the first wall panel 1 connected to the second fixing arm 32 (as shown in FIG. 5 ). (shown), so that the setting of the curling edge 34 does not affect the vibration characteristics of the keel 3 under the action of sound waves, so as not to affect the sound insulation and noise reduction effect of the keel 3 .

In some exemplary embodiments, the height B3 of the rolled edge 34 may be less than the height B1 of the support edge 35 . In an exemplary embodiment, the height B of the 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 .

In some exemplary embodiments, as shown in FIGS. 1-4 , the bead 34 is L-shaped. In other exemplary embodiments, the curling edge 34 may have an arc shape, or a vertical edge or a hypotenuse shape.

or , a curling edge 34 is arranged on both ends; or a supporting edge 35 is arranged on both ends. When one end of the first fixing arm 31 away from the connecting arm 33 and the end of the second fixing arm 32 away from the connecting arm 33 are both provided with a curling edge, the curling edge provided on the second fixing arm 32 is away from the first fixing arm 31 The distance between the end faces of the second fixing arms 32 is 3 mm to 10 mm.

In some exemplary embodiments, as shown in FIGS. 1-4 , the included angle α between the connecting arm 33 and the first fixing arm 31 is 100° to 160°. The included angle α may 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° to 160°, which can make the keel 3 have just right elasticity and rigidity, and avoid that when the angle α is too small, the keel 3 will not have enough elasticity and sound insulation. The effect is poor. When the angle α is too large, the rigidity of the keel 3 is insufficient, and the wall panel cannot be supported stably.

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. 2 and 4 , 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. 1 and FIG. 2 , the width A of the keel 3 may be 90 mm, the width A1 of the first fixing arm 31 may be 23 mm to 27 mm (for example, it may be 24 mm), and the second fixing arm may be 24 mm. The width A2 of 32 may be 50mm.

In another exemplary embodiment, as shown in FIG. 3 and FIG. 4 , the width A of the keel 3 may be 130 mm, the width A1 of the first fixing arm 31 may be 23 mm to 27 mm (eg, may be 24 mm), and the second fixing arm 31 may be 23 mm to 27 mm in width. The width A2 of the arm 32 may be 50 mm.

As shown in FIG. 5 , when the keel 3 is used in the sound insulation wall unit, the first fixed arm 31 of the 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. connect. When the joints of the two first wall panels 1 are located on the second fixing arm 32, the edges of the two first wall panels 1 can be fixed on the second fixing arm 32. When fixing by nails, the screws are The sides are at least 10mm, and if the second fixing arm 32 is too narrow, the two first wall panels 1 cannot be fixed. Therefore, the width A2 of the second fixing arm 32 is set so that the edges of the two first wall panels 1 can be fixed by nailing.

In some exemplary embodiments, the first fixing arm 31 and the second fixing arm 32 are provided with screw fixing holes.

As shown in Figures 5-7, when the keel 3 is installed on the sound insulation wall unit or wall, the first fixed arm 31 and the second fixed arm 32 can be connected with the sound insulation wall unit or other components of the wall (such as the wall Plates, supporting keels 4, etc.) are fixed with screws 7.

In an exemplary embodiment, as shown in FIG. 5 , the keel 3 is connected between the first wall panel 1 and the second wall panel 2 , the first fixing arm 31 and the second wall panel 2 are connected by screws 7 , and the second wall panel is fixed. The arm 32 and the first wall panel 1 are connected by screws 7 . When the screw 7 fixes the first wall panel 1 and the second fixing arm 32 of the keel 3, the second fixing arm 32 will elastically deform under the thrust of the screw 7, and drive the supporting edge 35 to move toward the second wall panel 2 until the support The side 35 is in contact with the board surface of the second wall panel 2. At this time, the second fixing arm 32 can be positioned, and the screw 7 can be screwed into the screw fixing hole of the second fixing arm 32. The fixing arm 32 returns to its original state under the action of its own elastic force and the screw, and finally realizes the fixing of the second fixing arm 32 and the first wall panel 1 .

In another exemplary embodiment, during installation, a support block (such as a foam block) is filled between the second fixing arm 32 and the second wall panel 2 to fix the second fixing arm 32 to assist the second fixing arm 32 to connect with the wall panel 2. The first wall panel 1 is fixed to prevent deformation and displacement under the action of the screws 7 when the second fixing arm 32 is fixed to the first wall panel 1 .

When the support block is used for auxiliary installation, after the second fixing arm 32 is fixed with the first wall panel 1, the support block needs to be removed, but the support block is difficult to disassemble. After screwing, it is difficult to completely remove the support block, which will weaken the elasticity of the keel , reduce the sound insulation performance of the wall. The use of the support edge 35 to position the second fixing arm 32 does not require the assistance of a support block, so that the fixing operation of the first wall panel 1 is simple and the wall assembly efficiency is high.

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

In some exemplary embodiments, the height B of the keel is 10mm to 50mm. In an exemplary embodiment, the height B of the keel 3 may be 15mm or 25mm.

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

In some exemplary embodiments, the keel 3 is a light steel keel, which can be made of galvanized steel strips.

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

In an exemplary embodiment, the width A of the 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 keel 3 is 90×25×0.6.

In an exemplary embodiment, the width A of the 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 keel 3 is 130×25×0.6.

The embodiment of the present application provides a sound insulation wall unit, as shown in FIG. 5 , comprising a first wall panel 1 , a second wall panel 2 and the keel 3 above, and the first wall panel 1 and the second wall panel 2 pass through The keel 3 is connected, and a first cavity 61 is formed between the first wall panel 1 and the second wall panel 2 .

The keel 3 has better elasticity, the first wall panel 1 and the second wall panel 2 connected on both sides of the keel 3 provided in the embodiment of the present application are non-rigid connections, and the wall panel on one side (such as the first wall panel 1 ) vibration, it is not easy to transmit the vibration to the other side wall panel (such as the second wall panel 2), thereby improving the sound insulation performance of the sound insulation wall unit.

In addition, a first cavity 61 is formed between the first wall panel 1 and the second wall panel 2. Due to the elastic layer of the air layer in the first cavity 61, it is similar to adding a spring or damper inside the wall, Because the vibration of the air attenuates the sound energy, the purpose of sound insulation is achieved; and 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 and achieves sound insulation. , The purpose of noise reduction is conducive to improving the sound insulation performance of the sound insulation wall unit.

Through the cooperation of the keel 3 with the first cavity 61, the sound insulation performance of the sound insulation wall unit is greatly improved.

In some exemplary embodiments, as shown in FIG. 5 , the width of the first fixing arm 31 is smaller than the width A2 of the second fixing arm 32 , the first wall panel 1 is located outside the second wall panel 2 , and the first wall panel 1 Connected with the second fixing arm 32 of the keel 3 , the second wall panel 2 is connected with the first fixing arm 31 of the keel 3 . In other exemplary embodiments, the first fixing arm 31 can be connected with the first wall panel 1 on the outer side, and the second fixing arm 32 can be connected with the second wall panel 2 on the inner side.

In some exemplary embodiments, the first wall panel 1 and the second fixing arm 32 are connected by screws 7 , and the second wall panel 2 and the first fixing arm 31 are connected by screws 7 .

The first wall panel 1 is located on the outside of the second wall panel 2. When the first wall panel 1 and the second fixing arm 32 of the keel 3 are fixed by screws 7, the screws 7 pass through the first wall panel 1 and the second fixing arm from the outside in sequence. The arm 32, the supporting edge 35 on the second fixing arm 32 can cooperate with the second wall panel 2 to position the second fixing arm 32, which is helpful for screwing the screw 7 into the screw fixing hole of the second fixing arm 32, so that the screw 7 is fixed Easy to operate.

In some exemplary embodiments, there is a gap between the supporting edge 35 of the second fixing arm 32 and the second wall panel 2 , and the gap is 3 mm to 12 mm.

There is a gap between the support edge 35 and the second wall panel 2, so that the support edge 35 is not in contact with the second wall panel 2, and does not affect the vibration characteristics of the keel 3 under the action of sound waves, so as not to affect the sound insulation and noise reduction of the keel 3. Effect. The gap is 3mm to 12mm, which is convenient for the keel 3 to be deformed when the first wall panel 1 and the second fixing arm 32 are connected by the screw 7, so that the supporting edge 35 and the second wall panel 2 cooperate to locate the second fixing arm 32, which is convenient for nailing. operate.

In an exemplary embodiment, as shown in FIG. 5 , sound insulation bars 5 are provided between the keel 3 and the first wall panel 1 and between the keel 3 and the second wall panel 2 . A sound insulation strip 5 is provided between the second fixed arm 32 of the keel 3 and the first wall panel 1 , and a sound insulation strip 5 is provided between the first fixed arm 31 of the keel 3 and the second wall board 2 . Wherein, the sound insulation strips 5 can be elastic strips such as rubber strips, nylon strips, etc., which can be pasted and fixed, or can be formed by damping sound insulation sealants.

The sound insulation strips 5 are arranged so that there is no hard connection (direct connection) between the keel 3 and the first wall panel 1 and between the keel 3 and the second wall panel 2, and the sound insulation strip 5 strengthens the attenuation of sound energy to achieve The purpose of improving the sound insulation effect.

In some exemplary embodiments, a sound insulation strip 5 is provided between the first fixed arm 31 of the keel 3 and the second wall panel 2 , at this time, the sound insulation bar 5 is arranged between the supporting edge 35 of the second fixed arm 32 and the second wall panel 2 . The gap 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 keel 3 and the second wall panel 2 , and the gap between the support edge 35 of the second fixed arm 32 and the second wall panel 2 It 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 2 mm to 5 mm.

The embodiment of the present application provides a wall. As shown in FIG. 6 , the wall includes a first wall unit 9 , a second wall unit 10 , a support keel 4 and a keel 3 , and keels are fixed on both sides of the support keel 4 3. The keels 3 on both sides are connected with the first wall unit 9 and the second wall unit connection 10 respectively.

The upper and lower ends of the support keel 4 can be connected with the heaven and earth keels to support the wall. Two sides of the support keel 4 are connected with a keel 3, and the keel 3 can achieve the effect of sound insulation and noise reduction.

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

Two sides of the support keel 4 are respectively connected with a keel 3, one keel 3 is connected with the first wall unit 9 on the side away from the support keel 4, and the other keel 3 is connected with the second wall unit on the side away from the support keel 4. 10 is connected, the two ends of the keel 3 are free ends, and the keel 3 is suspended on the supporting keel 4. Only one side of the 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 is only connected with the first wall unit 9 (or the first wall body). unit 9 and other wall units), or the second wall unit 10 (or the second wall unit 10 and other wall units), both ends of the keel 3 and the side away from the support keel 4 have no structural parts . The suspended keel 3 has a larger range of motion, better elasticity, and better low-frequency sound absorption. The better the elasticity of the keel 3, not only the sound insulation of the wall in the low frequency band is significantly improved, but also the matching effect is weakened, so that the weighted sound insulation of the wall is significantly increased.

In some exemplary embodiments, the keels 3 are arranged laterally or vertically or obliquely. Among them, the horizontal direction refers to the direction parallel to the ground after the wall is installed, and the vertical direction refers to the direction perpendicular to the ground after the wall is installed.

The upper and lower ends of the vertically arranged keel 3 are not connected to the heaven and earth keel, so that the keel 3 is in a suspended state and both ends are free. The left and right ends of the horizontally arranged keel 3 are not connected to the vertically arranged keel of the wall (eg, the supporting keel 4 ).

In some exemplary embodiments, the first wall unit 9 and the second wall unit 10 may include single-layer wall panels, or may include multi-layer wall panels (two or more layers).

The embodiment of the present application further provides a wall. As shown in FIG. 7 , the wall includes a vertically arranged support keel 4 and sound insulation wall units arranged on both sides of the support keel 4 .

A first cavity 61 (two) is formed between the adjacent first wall panels 1 and the second wall panels 2, and a second cavity 62 is formed between the two second wall panels 2, so that three cavities are formed in the wall. A cavity is a three-layer air layer. 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 to achieve the effect of sound insulation; and 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 effect of sound insulation and noise reduction, and greatly improves the sound insulation performance of the wall.

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

In the embodiment shown in FIG. 7 , the two sides of the support keel 4 are respectively connected with the second wall panel 2 in the sound insulation wall unit, and the two ends of the keel 3 in the sound insulation wall unit are free ends, and then the keel 3. The suspension is set on the support keel. Only one side (inside) of the keel 3 is fixedly connected to 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 to the first wall panel 1, Or the first wall panel 1 and other wall units, both ends of the keel 3 and the side (outer side) away from the support keel 4 have no structural components. The keel set in suspension has a larger range of activity, better elasticity, and improved sound insulation.

In some exemplary embodiments, sound insulation bars 5 are provided between the keel 3 and the first wall panel 1 , between the keel 3 and the second wall panel 2 , and between the support keel 4 and the second wall panel 2 .

The sound insulation strips 5 are arranged so that there is no hard connection (direct connection) between the keel 3 and the first wall panel 1, between the keel 3 and the second wall panel 2, and between the supporting keel 4 and the second wall panel 2, The attenuation of sound energy is enhanced by the sound insulation strip 5, so as to achieve the purpose of enhancing sound insulation.

In some exemplary embodiments, the first cavity 61 is filled with a sound absorbing material, and the height of the sound absorbing material is smaller than that of the first cavity 61 . The height of the sound absorbing material is 3 mm to 10 mm smaller than the height of the first cavity 61 .

In some exemplary embodiments, the height of the keel is 25mm, the height of the first cavity 61 formed by the keel is 25mm, the height of the sound absorbing material is 20mm, and the first cavity 61 has a height of 5mm that is not full, so that the The sound-absorbing material does not create a sound bridge, which improves the sound insulation effect of the wall.

In some exemplary embodiments, as shown in FIG. 7 , the second cavity 62 is filled with a sound absorbing material 8 , and the height of the sound absorbing material 8 is smaller than that of the second cavity 62 , so that the sound absorbing material 8 does not generate Sound bridge to improve the sound insulation effect of the wall.

In some exemplary embodiments, the sound absorbing material 8 is formed of porous materials such as glass wool, rock wool or ceramic wool.

In some exemplary embodiments, the first wall panel 1 and the second wall panel 2 may be single-layer wall panels or multi-layer wall panels.

In some exemplary embodiments, the wall thickness of the keel 3 is smaller than the wall thickness of the support keel 4 . In an exemplary embodiment, the wall thickness of the keel 3 is 0.6 mm, and the wall thickness of the supporting keel 4 is 0.8 mm.

In some exemplary embodiments, the first wallboard 1 and the second wallboard 2 may be gypsum boards, such as: ordinary paper gypsum boards, refractory gypsum boards (such as glass fiber felt gypsum boards), etc.; Plates of other materials.

The following is a combination of three wall structures to describe their sound insulation effects.

①Wall 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

②Wall 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 (fill with 50 thick rock wool) + 12 thick ordinary gypsum board + 9.5 thick ordinary gypsum board

③Wall 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 keel of the embodiment of the application + 75 light steel keel (filled with 50 thick rock wool) + 64 keel of the embodiment of the application + 12 thick ordinary gypsum Board + 9.5 thick ordinary gypsum board (the wall structure refers to the structure shown in Figure 6, except that the first wallboard and the second wallboard are formed by two layers of gypsum boards with a thickness of 9.5 and 12)

Table 1

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

The low-frequency sound insulation of the lightweight wall is poor, mainly because the wall panel is relatively light, and it is difficult to block the low-frequency sound with a large vibration amplitude and a long wavelength. The use of the Z-shaped keel and the keel of the embodiment of the present application can make up for the disadvantage that the low-frequency sound insulation performance of the gypsum board wall using the light steel keel is poor.

It can be seen from Table 1 that the keel of the embodiment of the application is in the low frequency range, that is, between 125 Hz and 315 Hz, and the sound absorption and noise reduction effect of the keel of the embodiment of the application is better than that of the Z-shaped keel, which can make up for the low-frequency range of the Z-shaped keel. The internal noise reduction effect is not ideal. The wall using the keel of the embodiment of the present application has a good sound absorption and noise reduction effect in the low frequency range, and reduces the pollution of low frequency noises such as motors and fans.

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

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 the patent protection of this application still needs to be The scope defined by the appended claims shall prevail.

Claims

A keel, comprising: a first fixed arm, a connecting arm and a second fixed arm connected in sequence, the first fixed arm and the second fixed arm are arranged in parallel, the connecting arm is arranged obliquely, and the connecting arm The end connected with the second fixing arm is inclined toward the side away from the first fixing arm.
The keel of claim 1, wherein a support edge is provided at one end of the second fixed arm away from the first fixed arm, the support edge is bent toward the side where the first fixed arm is located, and The height of the support edge is smaller than the height of the keel.
The keel according to claim 2, wherein the supporting edge is a straight edge vertically arranged relative to the second fixing arm;

Alternatively, the supporting edge is an oblique edge disposed obliquely relative to the second fixing arm, and the included angle between the supporting edge and the second fixing arm is an obtuse angle.
The keel of claim 2, wherein the distance between the supporting edge and the end surface of the first fixing arm away from the second fixing arm is 3 mm to 10 mm.
The keel according to any one of claims 1 to 4, wherein one end of the first fixing arm away from the second fixing arm is provided with a curling edge, and the curling edge faces the place where the second fixing arm is located One side is bent, and the height of the bead is smaller than the height of the keel.
The keel according to any one of claims 1 to 4, wherein the included angle between the connecting arm and the first fixing arm is 100° to 160°.
The keel of any one of claims 1 to 4, wherein the width of the first fixation arm is different from the width of the second fixation arm.
The keel according to any one of claims 1 to 4, wherein the damping keel has a width of 50mm to 150mm, a height of 10mm to 50mm, a wall thickness of 0.4mm to 1mm, and is made of galvanized steel strip .
A sound insulation wall unit, comprising: a first wall panel, a second wall panel and the joist according to any one of claims 1 to 8, the first wall panel and the second wall panel passing through the The keel is connected, and a first cavity is formed between the first wall panel and the second wall panel.
The sound insulation wall unit according to claim 9, wherein the width of the first fixing arm is smaller than the width of the second fixing arm, and the first wall panel is connected to the second fixing arm of the keel, The second wall panel is connected to the first fixed arm of the keel.
The sound insulation wall unit according to claim 10, wherein a gap exists between the supporting edge of the second fixing arm and the second wall panel, and the gap is 3mm to 12mm.
The sound insulation wall unit according to claim 11, wherein the first wall panel and the second fixing arm are connected by screws, and the second wall panel and the first fixing arm are connected by screws.
A wall body, comprising: a first wall body unit, a second wall body unit, a support keel and the keel according to any one of claims 1 to 8, the keels are fixed on both sides of the support keel , the keels on both sides are respectively connected with the first wall unit and the second wall unit; or, the wall includes: two sound insulation walls according to any one of claims 9 to 12 A body unit and a support keel, and both sides of the support keel are respectively connected with the second wall panels in the sound insulation wall body unit.
The wall of claim 13, wherein both ends of the keel are free ends.
The wall body according to claim 13, wherein the keel is arranged horizontally or vertically or inclined.