A fine assembly system and process for low-frequency, broadband, thin-layer metamaterial structural modules for anechoic chambers

Abstract

The present invention discloses a fine assembly system and process for low-frequency, broadband, thin-layer metamaterial structural modules for anechoic chambers, in particular, a size-adjustable fine assembly system; the system comprises a main bearing portion arranged on the top and side walls of a building body, a position adjustment portion adjustable in position on the main bearing portion, and a sound-absorbing structural module limitedly arranged on the position adjustment portion; the fine assembly system comprises a main bearing device, a fine adjustment device, and an assembly process between the low-frequency, broadband, thin-layer metamaterial structural modules. The fine assembly system can easily adapt to the assembly of low-frequency, broadband, thin-layer metamaterial structural modules after size changes, and perform fine adjustments to achieve the purpose of fine assembly. The fine assembly system and process have the characteristics of low cost, simple installation and adjustment, convenient disassembly and transportation, flexible use, high utilization rate, fine adjustment, simple and reliable assembly and process, and strong operability.

Description

Technical Field

[0001] The present invention relates to the technical field of assembly of architectural acoustics and noise control, and in particular to a fine assembly system and process for a low-frequency, broadband, thin-layer metamaterial structure module for an anechoic chamber. Background Art

[0002] Anechoic chambers are laboratories used in acoustic measurement research. They artificially simulate an ideal environment free of acoustic interference, providing a low-noise test environment in a semi-free or free-field space. They are extremely important laboratories in electroacoustic and noise testing and are widely used. Anechoic chambers are categorized as semi-anechoic chambers and full-anechoic chambers. Full-anechoic chambers have sound-absorbing materials covering all six surfaces: the four walls, ceiling, and floor. Semi-anechoic chambers have sound-absorbing materials covering all five surfaces: the four walls and ceiling.

[0003] The anechoic materials used in traditional anechoic chambers are typically sound-absorbing wedges or flat, porous sound-absorbing materials. In recent years, the development of acoustic metamaterial technology has provided a new approach to noise reduction in anechoic chambers. There are already domestic projects using anechoic metamaterials in these chambers. However, these metastructured chambers are all newly built, rather than retrofitted from traditional anechoic chambers. This is because changes in the size and shape of the anechoic material modules can lead to mismatches. Furthermore, with the continuous development of acoustic metamaterials and increasing noise reduction requirements, the metamaterial modules used in anechoic chambers need to be frequently updated to achieve lower anechoic frequencies, wider frequency bands, and improved noise reduction performance. Obviously, the size and shape of updated and newly designed anechoic modules may change, but the existing anechoic module mounting brackets are not compatible with these changes. Consequently, replacing anechoic modules requires replanning and reconstructing the anechoic chamber, wasting significant time and money.

[0004] Currently, there is no sophisticated assembly system, process, or technique for the low-frequency, broadband, thin-layer metamaterial structure module for an anechoic chamber according to the present invention. Summary of the Invention

[0005] The purpose of the present invention is to provide a fine assembly system and process for low-frequency, broadband, thin-layer metamaterial structure modules for anechoic chambers, so as to solve the above-mentioned defects in the prior art.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] The present invention provides a fine assembly system and process for a low-frequency, broadband, thin-layer metamaterial structural module for an anechoic chamber, comprising a main load-bearing portion arranged on the top and side walls of a building body, a position adjustment portion adjustable on the main load-bearing portion, and a sound-absorbing structural module limitedly arranged on the position adjustment portion.

[0008] Furthermore, the main bearing portion includes a side wall main bearing portion provided on the inner side wall of the building body;

[0009] The side wall main bearing part is a suspended side wall main bearing part;

[0010] Or / and, the side wall main bearing portion is a supporting side wall main bearing portion.

[0011] Furthermore, the main bearing portion of the suspended side wall includes longitudinal reinforcements vertically arranged at each corner of the building and transverse reinforcements connecting adjacent longitudinal reinforcements;

[0012] The longitudinal and transverse reinforcements form a "mouth" structure;

[0013] The upper and lower ends of the longitudinal reinforcement are fixedly connected to the ceiling and the ground respectively.

[0014] Furthermore, the two longitudinal ribs are connected by a suspension position adjustment portion; the suspension position adjustment portion includes a side wall suspension adjustment rod for installing the side wall sound absorption structure module, and a fixed suspension sleeve for connecting the longitudinal ribs and the side wall suspension adjustment rod;

[0015] The side wall sound absorption structure module is detachably arranged on the side wall suspension adjustment rod;

[0016] The side wall sound absorption structure module is hung on the side wall suspension adjustment rod through an inverted U-shaped hook;

[0017] The fixed hanging sleeve is a three-way structure, which is connected to the side wall hanging adjustment rod and is positioned on the longitudinal reinforcement through bolts;

[0018] Alternatively, the fixed hanging sleeve is a four-way structure, one end hole of which is connected to the side wall hanging adjustment rod, and after being sleeved on the longitudinal reinforcement, it is positioned on the longitudinal reinforcement by bolts.

[0019] Furthermore, the main bearing portion of the braced side wall includes longitudinal reinforcements vertically arranged at each corner of the building and adjustable support portions connecting adjacent longitudinal reinforcements via a plurality of support position adjustment portions;

[0020] The adjustable support portion is in the shape of a plate, a mesh, a multi-rod shape, or a combination thereof;

[0021] The upper limit of the adjustable support portion is provided with a detachable side wall sound absorption structure module.

[0022] Furthermore, the main bearing part further includes a ceiling main bearing part arranged on the top of the building body;

[0023] The main bearing part of the ceiling includes a slide rail provided along the wall at the top of the building body; a ceiling hanging position adjustment part is provided at the upper limit of the slide rail, and a ceiling sound absorption structure module is suspended on the ceiling hanging position adjustment part;

[0024] The ceiling suspension position adjustment unit includes a ceiling suspension adjustment rod disposed on the slide rail and close to the ceiling; wherein both ends of the ceiling suspension adjustment rod are disposed on the slide rail through ceiling rod fixing sleeves;

[0025] A plurality of hooks for installing the ceiling sound absorption structure module are also suspended on the ceiling suspension adjustment rod through a connecting sleeve;

[0026] The ceiling sound absorption structure module is a porous multi-flow layer sound absorption structure.

[0027] Furthermore, the sound absorbing structure module is arranged on the inner wall of the sound insulation room through the main bearing part and the position adjustment part to form a super-structured anechoic chamber.

[0028] Furthermore, the sound-absorbing structure module is arranged on the ground on both sides of the road through the main bearing part and the position adjustment part to form a sound-absorbing barrier.

[0029] Compared with the prior art, the beneficial technical effect of the present invention is as follows: in this application, when the low-frequency, broadband, thin-layer metamaterial structure module for an anechoic chamber is updated, or in order to test a new low-frequency, broadband, thin-layer metamaterial structure module for an anechoic chamber, the previous low-frequency, broadband, thin-layer metamaterial structure module for an anechoic chamber can be directly removed, and the new low-frequency, broadband, thin-layer metamaterial structure module for an anechoic chamber can be easily and finely assembled, thereby solving the problems of needing to rebuild the anechoic chamber, which is time-consuming, labor-intensive, and has a long cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention will be further described below with reference to the accompanying drawings.

[0031] Figure 1 Structural diagram of an embodiment of the present invention

[0032] Figure 2 Sound-absorbing structure module

[0033] Figure 3 Structural diagram of an embodiment of the present invention

[0034] Figure 4 Mesh support position adjustment unit

[0035] Figure 5 Combined support position adjustment unit

[0036] Figure 6 Structural diagram of an embodiment of the present invention

[0037] Figure 7Low-frequency, broadband, thin-layer metamaterial structure module with hooks

[0038] Description of the accompanying drawings:

[0039] 1. Suspended side wall main load-bearing part; 2. Suspended position adjustment part; 3. Sound-absorbing structure module; 4. Side wall suspension adjustment rod; 5. Fixed suspension sleeve; 6. Supported side wall main load-bearing part; 7. Supported position adjustment part; 8. Adjustable support part; 9. Fixed support sleeve; 10. Ceiling main load-bearing part; 11. Ceiling suspension position adjustment part; 12. Ceiling suspension adjustment rod; 13. Ceiling rod fixing sleeve; 14. Round rod suspension sleeve; 15. Sound-absorbing structure module. DETAILED DESCRIPTION

[0040] The present application discloses a fine assembly system and process for a low-frequency, broadband, thin-layer metamaterial structural module for an anechoic chamber, comprising a main load-bearing portion arranged on the top and side walls of a building body, a position adjustment portion adjustable on the main load-bearing portion, and a sound-absorbing structural module limitedly mounted on the position adjustment portion.

[0041] The main bearing part includes a side wall main bearing part installed on the inner wall of the building body;

[0042] Specifically, the side wall main bearing portion is a suspended side wall main bearing portion 1 ; or the side wall main bearing portion is a supported side wall main bearing portion 6 .

[0043] In this embodiment, the main bearing portion 1 of the suspended side wall includes longitudinal reinforcements vertically installed at each corner of the building and transverse reinforcements connecting adjacent longitudinal reinforcements;

[0044] Specifically, the longitudinal reinforcement and the transverse reinforcement form a "mouth" structure; the upper and lower ends of the longitudinal reinforcement are fixedly connected to the ceiling and the ground respectively.

[0045] In this embodiment, the two longitudinal reinforcements are connected by a suspension position adjustment portion 2; the suspension position adjustment portion 2 includes a side wall suspension adjustment rod 4 for mounting the side wall sound absorption structure module 3, and a fixed suspension sleeve 5 for connecting the longitudinal reinforcement and the side wall suspension adjustment rod 4;

[0046] The side wall sound absorbing structure module 3 is detachably mounted on the side wall hanging adjustment rod 4; specifically, the side wall sound absorbing structure module 3 is hung on the side wall hanging adjustment rod 4 via an inverted U-shaped hook;

[0047] In this embodiment, the fixed hanging sleeve 5 is a three-way structure, which is connected to the side wall hanging adjustment rod 4 and is positioned on the longitudinal reinforcement by bolts; the fixed hanging sleeve 5 is a four-way structure, one end hole of which is connected to the side wall hanging adjustment rod 4, and after it is sleeved on the longitudinal reinforcement, it is positioned on the longitudinal reinforcement by bolts.

[0048] In this embodiment, the main bearing portion 6 of the braced side wall comprises longitudinal reinforcements vertically installed at each corner of the building and adjustable support portions 8 connected to adjacent longitudinal reinforcements via a plurality of support position adjustment portions 7;

[0049] The adjustable support portion 8 is in the shape of a plate, a mesh, a multi-rod shape, or a combination thereof;

[0050] The upper limit position of the adjustable support portion 8 is provided with a detachable side wall sound absorption structure module.

[0051] In this embodiment, the main bearing part further includes a ceiling main bearing part 10 provided at the top of the building body; the ceiling main bearing part 10 includes a slide rail installed along a wall at the top of the building body; a ceiling hanging position adjustment part 11 is provided at the upper limit of the slide rail, and a ceiling sound absorbing structure module 15 is suspended on the ceiling hanging position adjustment part 11;

[0052] The ceiling suspension position adjustment unit 11 includes a ceiling suspension adjustment rod 12 mounted on the slide rail and close to the ceiling; both ends of the ceiling suspension adjustment rod 12 are arranged on the slide rail through ceiling rod fixing sleeves 13;

[0053] A plurality of hooks for mounting the ceiling sound absorbing structure module 15 are also provided on the ceiling suspension adjustment rod 12 through a connecting sleeve;

[0054] The ceiling sound absorption structure module 15 is a porous multi-flow layer sound absorption structure.

[0055] In this embodiment, the sound-absorbing structural module is installed on the inner wall of the soundproof room through the main bearing portion and the position adjustment portion to form a super-structured anechoic chamber. The sound-absorbing structural module can also be installed on the ground on both sides of the road through the main bearing portion and the position adjustment portion to form a sound-absorbing barrier.

[0056] Example 1

[0057] As shown in FIG1 and FIG2 , the present invention includes a relatively independently installed suspended side wall main bearing portion 1 , a suspended position adjustment portion 2 , and a sound absorbing structure module 3 .

[0058] The main bearing portion 1 of the suspended side wall comprises longitudinal bars vertically installed at each corner of the building and transverse bars connecting adjacent longitudinal bars;

[0059] Specifically, the longitudinal reinforcement and the transverse reinforcement form a "mouth" structure; the upper and lower ends of the longitudinal reinforcement are fixedly connected to the ceiling and the ground respectively.

[0060] In this embodiment, the two longitudinal reinforcements are connected by a suspension position adjustment portion 2; the suspension position adjustment portion 2 includes a side wall suspension adjustment rod 4 for mounting the side wall sound absorption structure module 3, and a fixed suspension sleeve 5 for connecting the longitudinal reinforcement and the side wall suspension adjustment rod 4;

[0061] The side wall sound absorbing structure module 3 is detachably mounted on the side wall hanging adjustment rod 4; specifically, the side wall sound absorbing structure module 3 is hung on the side wall hanging adjustment rod 4 via an inverted U-shaped hook;

[0062] In this embodiment, the fixed hanging sleeve 5 is a three-way structure, which is connected to the side wall hanging adjustment rod 4 and is positioned on the longitudinal reinforcement by bolts; the fixed hanging sleeve 5 is a four-way structure, one end hole of which is connected to the side wall hanging adjustment rod 4, and after being sleeved on the longitudinal reinforcement, it is positioned on the longitudinal reinforcement by bolts;

[0063] The installation of a suspended position adjustment unit 2 allows for the rational division of the wall space based on the dimensions of the low-frequency, broadband, thin-layer metamaterial structure module. The suspended position adjustment unit 2 comprises a finely adjustable rod and a fixed suspension sleeve 5. When assembling the low-frequency, broadband, thin-layer metamaterial structure module, the finely adjustable rod can be moved and finely adjusted in a predetermined manner on the suspended sidewall main support portion 1 based on the dimensions and positional relationships of the low-frequency, broadband, thin-layer metamaterial structure module. The fixed suspension sleeve 5 can be moved and finely adjusted in a predetermined manner on the finely adjustable rod based on the dimensions and positional relationships of the low-frequency, broadband, thin-layer metamaterial structure module, allowing for precise assembly of the low-frequency, broadband, thin-layer metamaterial structure module. The dimensions of the low-frequency, broadband, thin-layer metamaterial structure module include its width, height, or length. Movement includes up and down, left and right, or forward and backward movement.

[0064] The suspended sidewall main support portion 1 is bolted to the top wall and the ground. It is preferably made of steel. The sound-absorbing structure module is a low-frequency, broadband, thin-layer metamaterial structure with an inverted U-shaped hook welded to it, which is suspended from the suspended position adjustment portion 2.

[0065] Example 2

[0066] As shown in FIG3 , the present invention includes relatively independently arranged supporting side wall main bearing parts 6 and supporting position adjustment parts 7 .

[0067] The installation of a support-type position adjustment portion 7 allows for the rational division of the wall space based on the dimensions of the low-frequency, broadband, thin-layer metamaterial structure module. The support-type position adjustment portion 7 comprises an adjustable support portion 8 and a fixed support sleeve 9. When assembling the low-frequency, broadband, thin-layer metamaterial structure module, the adjustable support portion 8 can be moved and finely adjusted in a predetermined manner on the supporting sidewall main bearing portion 6 based on the module's dimensions and positional relationship. The fixed support sleeve 9 is used to secure and adjust the adjustable support portion 8. The dimensions of the low-frequency, broadband, thin-layer metamaterial structure module can be the module's width, height, or length. Movement can be up and down.

[0068] The supporting side wall main bearing portion 6 is fixedly connected to the top wall and the ground via bolts. Preferably, the supporting side wall main bearing portion 6 is made of steel. The low-frequency, broadband, thin-layer metamaterial structure module can be directly placed on the supporting position adjustment portion 7. The supporting position adjustment portion 7 can be mesh-shaped, as shown in Figure 4, or modular, as shown in Figure 5.

[0069] Example 3

[0070] As shown in FIG6 , the present invention includes a relatively independently arranged main ceiling bearing portion 10 , a ceiling suspension position adjusting portion 11 , and a sound absorbing structure module 15 as shown in FIG7 .

[0071] The suspended position adjustment unit 2 includes a ceiling suspension position adjustment unit 11, which is mounted on the main ceiling support 10. The installation of the ceiling suspension position adjustment unit 11 allows for the rational division of the ceiling space according to the size of the low-frequency, broadband, thin-layer metamaterial structure module. The ceiling suspension position adjustment unit 11 comprises a ceiling suspension adjustment rod 12, a ceiling suspension adjustment rod fixing sleeve 13 mounted on the rod, and a ceiling suspension adjustment rod suspension sleeve 14 mounted on the rod. When assembling the low-frequency, broadband, thin-layer metamaterial structure module, the ceiling suspension adjustment rod 12 can be moved and finely adjusted on the main ceiling support 10 in a predetermined manner based on the size and positional relationship of the low-frequency, broadband, thin-layer metamaterial structure module. The ceiling rod fixing sleeve 13 is used for adjustment and fixation. The sound-absorbing structure module 15 is suspended on the upper round rod suspension sleeve 14. The round rod suspension sleeve 14 can be moved and finely adjusted on the ceiling suspension adjustment rod 12 in a predetermined manner based on the size and positional relationship of the low-frequency, broadband, thin-layer metamaterial structure module, allowing for precise assembly of the low-frequency, broadband, thin-layer metamaterial structure module. The size of the low-frequency broadband thin-layer metamaterial structure module includes the width, height or length of the low-frequency broadband thin-layer metamaterial structure module. The movement includes left-right movement or front-back movement.

[0072] The main roof supporting part 10 is fixedly connected to the roof by bolts. The main roof supporting part 10 is preferably made of steel.

[0073] The above embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by persons skilled in the art shall fall within the scope of protection defined by the claims of the present invention.

Claims

1. A fine assembly system for low-frequency, broadband, thin-layer metamaterial structural modules for anechoic chambers, characterized by: It includes a main bearing part arranged on the top and side walls of the building body, a position adjustment part adjustable on the main bearing part, and a sound absorbing structure module limitedly arranged on the position adjustment part; The main bearing portion includes a side wall main bearing portion provided on the inner side wall of the building body; The side wall main bearing part is a suspended side wall main bearing part; The main bearing part of the suspended side wall includes longitudinal bars vertically arranged at each corner of the building and transverse bars connecting adjacent longitudinal bars; The longitudinal and transverse reinforcements form a "mouth" structure; The upper and lower ends of the longitudinal reinforcement are fixedly connected to the ceiling and the ground respectively; The two longitudinal ribs are connected via a suspended position adjustment portion; The suspension position adjustment portion includes a finely adjustable rod, a side wall suspension adjustment rod for mounting a side wall sound absorption structure module, and a fixed suspension sleeve for connecting the finely adjustable rod and the side wall suspension adjustment rod; The side wall sound absorption structure module is detachably arranged on the side wall suspension adjustment rod; The side wall sound absorption structure module is hung on the side wall suspension adjustment rod through an inverted U-shaped hook; the fixed suspension sleeve is a three-way structure, which is connected to the side wall suspension adjustment rod and is positioned on the finely adjustable rod through bolts; Alternatively, the fixed suspension sleeve is a four-way structure, one end hole of which is connected to the side wall suspension adjustment rod, and after being sleeved on the finely adjustable rod, it is positioned on the finely adjustable rod by bolts; The finely adjustable rod can be moved and finely adjusted in a predetermined manner on the main bearing portion of the suspended side wall according to the size and shape and position relationship of the low-frequency broadband thin-layer metamaterial structure module; The fixed suspension sleeve can be moved and finely adjusted in a predetermined manner on the side wall suspension adjustment rod according to the size and shape and position relationship of the low-frequency broadband thin-layer metamaterial structure module; the movement includes up and down movement, left and right movement, or front and back movement.

2. The fine assembly system of low-frequency, broadband, thin-layer metamaterial structure modules for anechoic chambers according to claim 1 is characterized by: The side wall main bearing portion also includes a supporting side wall main bearing portion; The main bearing portion of the supporting side wall includes longitudinal reinforcements vertically arranged at each corner of the building and adjustable supporting portions connected to adjacent longitudinal reinforcements via a plurality of supporting position adjustment portions; The adjustable support portion is in the shape of a plate, a mesh, a multi-rod shape, or a combination thereof; The upper limit of the adjustable support portion is provided with a detachable side wall sound absorption structure module.

3. The fine assembly system of low-frequency, broadband, thin-layer metamaterial structure modules for an anechoic chamber according to claim 1 is characterized by: The main bearing part also includes a ceiling main bearing part arranged on the top of the building body; The main bearing part of the ceiling includes a slide rail provided along the wall at the top of the building body; a ceiling hanging position adjustment part is provided at the upper limit of the slide rail, and a ceiling sound absorption structure module is suspended on the ceiling hanging position adjustment part; The ceiling suspension position adjustment unit includes a ceiling suspension adjustment rod disposed on the slide rail and close to the ceiling; wherein both ends of the ceiling suspension adjustment rod are disposed on the slide rail through ceiling rod fixing sleeves; A plurality of hooks for installing the ceiling sound absorption structure module are also suspended on the ceiling suspension adjustment rod through a connecting sleeve; The ceiling sound absorption structure module is a porous multi-flow layer sound absorption structure.

4. The fine assembly system of low-frequency, broadband, thin-layer metamaterial structure modules for an anechoic chamber according to any one of claims 1 to 3, characterized in that: The sound absorbing structure module is arranged on the inner wall of the sound insulation room through the main bearing part and the position adjustment part to form a super-structured anechoic chamber.

5. The fine assembly system of low-frequency, broadband, thin-layer metamaterial structure modules for an anechoic chamber according to any one of claims 1 to 3, characterized in that: The sound absorbing structure module is arranged on the ground at both sides of the road through the main bearing part and the position adjustment part to form a sound absorption screen.

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