A sound-insulating and pressure-resistant type of timber

Abstract

This utility model discloses a sound-insulating and pressure-resistant timber frame, comprising a timber frame body. A first side and a second side of the timber frame body are connecting contact surfaces. Multiple grooves are evenly distributed on both the first and second sides, each groove having a curved bottom. The grooves on the first and second sides are symmetrically distributed. The interior of the timber frame body contains at least two sets of cavities, each set including a first cavity and a second cavity, symmetrically distributed along the axial direction of the timber frame body. A first curved surface support is provided on one inner wall of the first cavity, and a second curved surface support is provided on one inner wall of the second cavity. This design utilizes the axially arranged cavities within the timber frame, with their curved surface supports, to increase the number of sound wave reflections within the cavities. The sound-absorbing cotton filling the cavities further enhances their sound absorption efficiency, thus improving the sound insulation effect. The curved surface supports within the cavities reduce and disperse stress concentration in the timber frame.

Description

Technical Field

[0001] This utility model relates to the field of timber technology, and in particular to a sound-insulating and pressure-resistant timber. Background Technology

[0002] Timber is a widely used building material, commonly used in concrete pouring construction as a support material for formwork, and as structural support columns and beams. It is also used to construct the framework of residences, such as walls, floors, and roofs, as well as in hotels, office buildings, and shopping malls. Timber can be used for interior partitions, ceilings, and wall decorations. Its lightweight and high-strength characteristics make it an ideal choice for multi-story buildings and large-span spaces. However, the sound insulation performance of a single layer of timber is relatively poor. According to the law of mass, the greater the surface density of a material, the greater its sound insulation. Timber has a relatively low surface density, therefore its sound insulation effect is not as good as that of thicker materials such as brick walls and concrete walls.

[0003] When timber is used in residential buildings, hotels, office buildings, and other places with high sound insulation requirements, its inherent noise reduction and sound insulation properties are poor. Therefore, it's difficult to achieve an effective balance between lightweight, high strength, and sound insulation. This necessitates adding sound-absorbing materials or other soundproofing treatments to the partitions and ceilings where timber is used, resulting in unsatisfactory overall sound insulation. Therefore, a type of timber is needed that can maintain its load-bearing and compressive strength while also possessing sound-absorbing and sound-insulating properties to enhance the overall sound insulation of partitions and ceilings. Utility Model Content

[0004] This utility model addresses the technical problem of balancing the sound insulation effect and compressive strength of timber when it is used in partition walls and ceilings. It provides a sound-insulating and compressive-resistant timber, which includes a timber body. The first side and the second side of the timber body are connecting contact surfaces. The first side and the second side are each uniformly provided with multiple grooves. The bottom of each groove is curved, and the grooves on the first side and the grooves on the second side are distributed symmetrically.

[0005] The interior of the timber body is provided with at least two sets of cavities, each set including a first cavity and a second cavity, the first cavity and the second cavity being symmetrically distributed along the axial direction of the timber body;

[0006] The first cavity has a first curved surface support on one side of its inner wall, and the second cavity has a second curved surface support on one side of its inner wall.

[0007] Preferably, in the above technical solution, the number of grooves on the first side and the second side is three, and each groove extends along the axial direction of the wooden block body.

[0008] Preferably, in the above technical solution, the inner wall of each groove is coated with a water-based damping coating.

[0009] Preferably, in the above technical solution, the principal curvature direction of the first curved surface support and the corresponding point of the bottom curved surface of the groove on the first side is the same, and the difference in the principal curvature radius does not exceed 0.05mm, ensuring that the curvature direction is consistent. The principal curvature direction of the second curved surface support and the corresponding point of the bottom curved surface of the groove on the second side is the same, and the difference in the principal curvature radius does not exceed 0.05mm, ensuring that the curvature direction is consistent.

[0010] Preferably, in the above technical solution, the interior of the first cavity and the second cavity are filled with sound-insulating cotton.

[0011] Preferably, in the above technical solution, at least three circular through holes are provided between the two sets of cavity groups, and the three circular through holes are distributed along the axial direction of the timber body.

[0012] Preferably, in the above technical solution, the inner wall of the circular through hole is provided with a first rib and a second rib at axial intervals, and there is a height difference between the first rib and the second rib in the axial direction of the through hole, so that an annular groove is formed between them around the inner wall of the through hole.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This invention utilizes multiple grooves along the sides of the timber and a water-based damping coating applied within these grooves to increase the number of scattering and reflections of sound waves, thereby enhancing sound energy absorption. Furthermore, the axially arranged cavity group inside the timber utilizes its curved surface support to increase the number of sound wave reflections within the cavity. The sound-absorbing cotton filling the cavity group further improves its sound absorption efficiency, thus enhancing the sound insulation effect. The curved surface support within the cavity group, with its principal curvature aligned with the bottom curvature of the grooves, reduces and disperses stress concentration in the timber, compensating to some extent for the stress limitations imposed by the cavities and balancing its own stress characteristics with its sound insulation effect.

[0015] This invention utilizes a circular through-hole in the center of a wooden block. The annular groove formed by the first and second ribs within the circular through-hole allows sound waves to enter the hole and, through reflection and friction against the hole wall, convert sound energy into heat energy, thus achieving the sound absorption effect of the circular hole. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a sound-insulating and pressure-resistant timber according to this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of one end of a sound-insulating and pressure-resistant timber according to the present invention;

[0018] Figure 3 for Figure 2 A partial enlarged view of the central circular through-hole and the second cavity;

[0019] Figure 4 This is a schematic diagram of the cross-section of a sound-insulating and pressure-resistant timber according to the present invention;

[0020] Figure 5 This is a cross-sectional view of the internal structure of the circular through hole in a sound-insulating and pressure-resistant timber according to this utility model.

[0021] Explanation of key figure labels:

[0022] 1-Wooden block body, 11-First side, 12-Second side, 13-Cavity group, 14-Circular through hole, 101-Groove, 131-First cavity, 132-Second cavity, 133-Sound insulation cotton, 141-First rib, 142-Second rib, 143-Annular groove, 1011-Water-based damping coating, 1311-First curved surface support, 1321-Second curved surface support. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figures 1-5As shown, this utility model discloses a sound-insulating and pressure-resistant timber frame, comprising a timber frame body 1. The first side 11 and the second side 12 of the timber frame body 1 are connecting contact surfaces. Each of the first side 11 and the second side 12 is uniformly provided with multiple grooves 101. The bottom of each groove 101 is curved, and the grooves 101 on the first side 11 and the second side 12 are distributed symmetrically. In this embodiment, the number of grooves 101 on both the first side 11 and the second side 12 is three, and each groove 101 extends along the axial direction of the timber frame body 1. When multiple timber frames are connected side-by-side, the first side 11 and the second side 12 of two timber frames are in contact and fit together, forming a flat through-hole between the grooves 101. Sound waves are scattered and reflected within the flat through-hole, improving the sound energy absorption rate. The interior of the timber frame body 1 is provided with at least two sets of cavity groups 13. In this embodiment, there are two sets of cavity groups 13, arranged in a stacked manner parallel to the sides of the timber frame. The cavity assembly 13 includes a first cavity 131 and a second cavity 132, which are symmetrically distributed along the axial direction of the timber body 1. A first curved surface support 1311 is provided on one inner wall of the first cavity 131, and a second curved surface support 1321 is provided on one inner wall of the second cavity 132. The first curved surface support 1311 and the second curved surface support 1321 can provide stress dispersion in the vertical direction of the timber, reducing stress concentration caused by the cavities and preventing collapse and breakage due to stress concentration. The principal curvature direction of the first curved surface support 1311 is the same as that of the bottom curved surface of the groove 101 on the first side 11, and the difference in the principal curvature radius does not exceed 0.05 mm, ensuring consistent curvature direction. Similarly, the principal curvature direction of the second curved surface support 1321 is the same as that of the bottom curved surface of the groove 101 on the second side 12, and the difference in the principal curvature radius does not exceed 0.05 mm, ensuring consistent curvature direction. When the principal curvature direction of the first curved surface support 1311 is the same as that of the bottom curved surface of the groove 101 on the first side 11, and the principal curvature direction of the second curved surface support 1321 is the same as that of the bottom curved surface of the groove 101 on the second side 12, this structure can maximize the effective dispersion of the emergency concentration of the timber in the vertical direction. The stress is decomposed along the connection area between the bottom curved surface of the groove 101 and the first curved surface support 1311 and the second curved surface support 1321, avoiding the timber from breaking or collapsing from the cavity assembly 13 during the stress process, and to a certain extent compensating for the stress constraint imposed by the cavity. The interior of the first cavity 131 and the second cavity 132 is filled with sound insulation cotton 133.The first cavity 131 and the second cavity 132 are filled with sound insulation cotton 133, forming a "wood-sound absorption layer-wood" structure. When sound waves enter the microporous sound insulation cotton, there are a large number of interconnected tiny pores. When the sound waves propagate in the pores, the air molecules repeatedly rub against the pore walls. At the same time, the air itself has viscous resistance, which causes the sound energy to be gradually converted into heat energy, thereby widening the sound absorption band and improving the sound absorption efficiency.

[0025] It should be further explained that at least three circular through holes 14 are provided between the two sets of cavity groups 13, and the three circular through holes 14 are distributed along the axial direction of the timber body 1. The inner wall of each circular through hole 14 is provided with a first rib 141 and a second rib 142 spaced apart along the axial direction, and there is a height difference between the first rib 141 and the second rib 142 in the axial direction of the through hole, forming an annular groove 143 surrounding the inner wall of the through hole. The tubular arrangement of the vertical hole structure is more conducive to dispersing sound pressure. The annular groove 143 formed between the first rib 141 and the second rib 142 inside the circular through hole 14 helps the sound waves to undergo multiple diffusion and reflection within the hole, consuming sound energy, reducing airborne sound transmission, and improving sound absorption efficiency. Furthermore, the small circular through holes 14 distributed along the axial direction have almost no impact on the stress conditions of the timber itself.

[0026] This invention utilizes multiple grooves along the sides of the timber and a water-based damping coating applied within these grooves to increase the number of scattering and reflections of sound waves, thereby enhancing sound energy absorption. Furthermore, the axially arranged cavity group within the timber utilizes its curved surface support to increase the number of sound wave reflections within the cavity. The sound-absorbing cotton filling the cavity group further improves its sound absorption efficiency, enhancing the sound insulation effect. The curved surface support within the cavity group shares the same principal curvature as the bottom curved surface of the grooves, reducing and dispersing stress concentration in the timber, thus compensating to some extent for the stress limitations imposed by the cavity and balancing its own stress characteristics with its sound insulation effect. The circular through-hole in the center of the timber, with its annular groove formed by the first and second ribs, allows sound waves to enter the pore and, through reflection and friction against the pore wall, convert sound energy into heat energy, achieving the sound absorption effect of the circular hole. This solves the technical problem of balancing the sound insulation effect and stress resistance of timber when used in partition walls and ceilings.

[0027] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A sound-insulating and pressure-resistant timber, characterized in that: The material includes a wooden block body (1), wherein the first side (11) and the second side (12) of the wooden block body (1) are connecting contact surfaces, and the first side (11) and the second side (12) are each uniformly provided with a plurality of grooves (101), the bottom of each groove (101) is curved, and the grooves (101) of the first side (11) and the grooves (101) of the second side (12) are distributed in a symmetrical manner; The interior of the timber body (1) is provided with at least two sets of cavities (13), each set of cavities (13) including a first cavity (131) and a second cavity (132), the first cavity (131) and the second cavity (132) being symmetrically distributed along the axial direction of the timber body (1); The first cavity (131) has a first curved surface support (1311) on one side of its inner wall, and the second cavity (132) has a second curved surface support (1321) on one side of its inner wall.

2. The sound-insulating and compression-resistant timber according to claim 1, characterized in that: The first side (11) and the second side (12) each have three grooves (101), and each groove (101) extends along the axial direction of the wooden block body (1).

3. The sound-insulating and compression-resistant timber according to claim 2, characterized in that: The inner wall of each groove (101) is coated with a water-based damping coating (1011).

4. The sound-insulating and compression-resistant timber according to claim 1, characterized in that: The first curved support (1311) and the bottom curved surface of the groove (101) on the first side (11) have the same principal curvature direction at the corresponding point, and the difference in principal curvature radius does not exceed 0.05mm, ensuring that the curvature direction is consistent. The second curved support (1321) and the bottom curved surface of the groove (101) on the second side (12) have the same principal curvature direction at the corresponding point, and the difference in principal curvature radius does not exceed 0.05mm, ensuring that the curvature direction is consistent.

5. The sound-insulating and compression-resistant timber according to claim 4, characterized in that: The first cavity (131) and the second cavity (132) are filled with sound-absorbing cotton (133).

6. The sound-insulating and compression-resistant timber according to claim 1, characterized in that: At least three circular through holes (14) are provided between the two sets of cavity groups (13), and the three circular through holes (14) are distributed along the axial direction of the wooden body (1).

7. The sound-insulating and compression-resistant timber according to claim 6, characterized in that: The inner wall of the circular through hole (14) is provided with a first rib (141) and a second rib (142) spaced apart along the axial direction, and there is a height difference between the first rib (141) and the second rib (142) in the axial direction of the through hole, so that an annular groove (143) is formed between them around the inner wall of the through hole.

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