Multifunctional noise reduction device

Abstract

The utility model belongs to the field of sound insulation and noise reduction, and particularly discloses a multifunctional noise reduction device which comprises a noise reduction mechanism which comprises two baffles and a noise reduction assembly located between the two baffles. The noise reduction assembly comprises two layers of sound insulation cloth located between the baffles, a sound insulation felt located between the two layers of sound insulation cloth and sound absorption cotton arranged between the sound insulation felt and the sound insulation cloth. The fixed connecting mechanism comprises a plurality of rotary connecting assemblies arranged on the four edges of the baffle and a supporting and fixing assembly arranged at the bottom of the baffle; the double-layer sound insulation cloth is matched with the sound absorption cotton, the mechanical property and the acoustic impedance characteristic of materials are utilized, sound energy passing is reduced to the maximum extent, the overall sound absorption performance is improved, the sound insulation and noise reduction performance of the device is improved, the noise reduction assembly can be attached to noise equipment with the curved surface appearance through the flexible materials of the noise reduction assembly, and the noise reduction effect is good. A noise reduction fence and a noise reduction screen can be formed, and the application range is widened.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of sound insulation and noise reduction, specifically relates to a multifunctional noise reduction device. BACKGROUND

[0002] Noise usually refers to those unwanted or interfering nature of sound, it can be environmental noise, mechanical noise, biological noise, etc. ; Noise has different definitions and influences in different fields, such as in environmental protection, noise pollution is regarded as a threat to human health and quality of life;

[0003] Noise sources include indoor workshop machinery emitted noise, outdoor construction emitted noise, etc., noise pollution seriously affects the work of workers and the rest of the surrounding people.

[0004] Traditionally, metal partitions are used to isolate noise sources from the external environment, however, the sound insulation and noise reduction performance of metal partitions is not ideal, and the workshop space is limited, which is not convenient for noise reduction of small noise equipment, and the noise equipment in construction needs to be moved frequently, which is not easy to disassemble and assemble, and is not convenient for personnel to use. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a multifunctional noise reduction device to solve the problems in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A multifunctional noise reduction device, comprising a noise reduction mechanism, two baffles and a noise reduction assembly between the two baffles, the noise reduction assembly comprising two layers of sound insulation cloth between the baffles, sound insulation felt between the two layers of sound insulation cloth and sound absorbing cotton between the sound insulation felt and the sound insulation cloth, a fixed connection mechanism comprising a plurality of rotating connection assemblies arranged on the four edges of the baffle and a support fixing assembly arranged at the bottom of the baffle.

[0008] Preferably, the noise reduction assembly is provided with a plurality of metal eyelets on the four edges, a plurality of threaded rods one are arranged between the baffles, a through hole one is arranged at each of the four corners of the baffle, the threaded rod one penetrates the metal eyelet and two through holes one, and the threaded rod one is threadedly connected with a nut one at both ends.

[0009] Preferably, the rotating connection assembly comprises a plurality of through holes two arranged on the four edges of the baffle, a hinge plate is arranged at the front end of the baffle around the through hole two, and a through hole three is arranged on the hinge plate.

[0010] Preferably, a plurality of threaded rods II are arranged between the baffles, the threaded rods II penetrating the metal eyelet, the through hole III and the two through holes II, and the threaded rods II are threadedly connected with nuts II at two ends.

[0011] Preferably, the support fixing assembly comprises a plurality of trapezoidal clamping grooves arranged on four edges of the baffle, two support seats arranged at the bottom of the baffle, an insertion slot arranged on the support seat at the periphery of the baffle, and a limiting bolt threadedly arranged at two ends of the support seat.

[0012] Preferably, the inner side of the insertion slot is provided with an elastic clamping block, and the elastic clamping block is matched with the trapezoidal clamping groove.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] The utility model discloses a double-layer sound insulation cloth is cooperated with sound absorption cotton, utilizes the mechanical property and acoustic impedance characteristic of material, reduces sound energy through and improves the sound absorption performance of whole to the maximum, improves the sound insulation and noise reduction performance of device, improves the strength and protection effect of device through the baffle.

[0015] The utility model discloses a double-layer sound insulation cloth is cooperated with sound absorption cotton, utilizes the mechanical property and acoustic impedance characteristic of material, reduces sound energy through and improves the sound absorption performance of whole to the maximum, improves the sound insulation and noise reduction performance of device, improves the strength and protection effect of device through the baffle. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be briefly introduced to the drawing needed to be used in the embodiment description, and obviously, the drawing in the following description is only some embodiments of the utility model, and for the ordinary skilled person in the art, under the premise of not paying the creative labor, other drawings can also be obtained according to these drawings. Wherein:

[0017] Figure 1 It is the whole structure schematic diagram of the utility model;

[0018] Figure 2 It is the structure schematic diagram of the noise reduction mechanism of the utility model;

[0019] Figure 3 It is the structure schematic diagram of the rotating connection assembly of the utility model;

[0020] Figure 4 It is the structure schematic diagram of the support fixing assembly of the utility model.

[0021] In the figure: 1, noise reduction mechanism; 101, baffle; 102, sound insulation cloth; 103, sound insulation felt; 104, sound-absorbing cotton; 105, metal eyelet; 106, through hole one; 107, threaded rod one; 108, nut one; 2, fixed connection mechanism; 201, rotary connection assembly; 2011, through hole two; 2012, through hole three; 2013, threaded rod two; 2014, nut two; 2015, hinged plate; 202, support fixing assembly; 2021, trapezoidal clamping groove; 2022, support seat; 2023, elastic clamping block; 2024, limiting bolt; 2025, slot. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purposes, features and advantages of the present application more apparent and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0023] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can be practiced in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the connotation of the present application, therefore the present application is not limited by the specific embodiments disclosed below.

[0024] Secondly, "one embodiment" or "embodiment" referred to herein means that a specific feature, structure or characteristic can be included in at least one implementation of the present application. "In one embodiment" appearing in different places in this specification does not mean the same embodiment, nor is it an independent or alternative embodiment that excludes other embodiments.

[0025] As shown in the accompanying drawings Figure 1 to the accompanying Figure 4 drawings:

[0026] Embodiment one: the present embodiment provides a multifunctional noise reduction device, which comprises a noise reduction mechanism 1, two baffles 101, and a noise reduction assembly between the two baffles 101; the noise reduction assembly comprises two layers of sound insulation cloth 102 between the baffles 101, sound insulation felt 103 between the two layers of sound insulation cloth 102, and sound-absorbing cotton 104 arranged between the sound insulation felt 103 and the sound insulation cloth 102; a fixed connection mechanism 2, comprising a plurality of rotary connection assemblies 201 arranged on the four sides of the baffle 101, and a support fixing assembly 202 arranged at the bottom of the baffle 101.

[0027] Specifically, a plurality of metal eyelets 105 are arranged on the four sides of the noise reduction assembly, a plurality of threaded rods one 107 are arranged between the baffles 101, a through hole one 106 is arranged at each of the four corners of the baffle 101, the threaded rod one 107 penetrates the metal eyelet 105 and the two through holes one 106, and the threaded rod one 107 is threadedly connected with the nut one 108 at both ends.

[0028] As can be seen from the above, the noise reduction assembly is provided with two layers of sound insulation cloth 102, the outer sound insulation cloth 102 adopts high-density polymer composite material, these materials have a large surface density, and the transmission loss (TL) of sound waves is improved to inhibit the transmission of sound waves, the sound-absorbing cotton 104 arranged in the middle is composed of porous or fibrous material, such as polyurethane fiber, which utilizes the air viscous resistance and fiber friction in the microstructure of the material to convert sound wave energy into heat energy, reduces sound wave scattering and internal resonance, and the inner sound insulation cloth 102 uses high-density material similar to or complementary to the first layer to provide a double sound insulation effect, especially to enhance the absorption and isolation of low-frequency sound waves, to use the mechanical properties and acoustic impedance characteristics of the material to maximize the reduction of sound energy and improve the overall sound absorption performance;

[0029] The baffle 101 shields and protects the noise reduction assembly, improves the strength of the device, avoids damage to the noise reduction assembly caused by external structure collision, and facilitates outdoor use of the device;

[0030] The worker respectively rotates and removes the nut 108 at both ends of the threaded rod 107, then pulls out the threaded rod 107 from the device, separates the two baffles 101 from each other, separates the noise reduction assembly from the baffles 101, and then pastes the noise reduction assembly on the surface of the instrument or wall, so that the noise reduction assembly is tightly attached to the surface of the instrument or wall through the flexible material, and the noise reduction assembly is completely attached, facilitating indoor use of the device, such as noise equipment with curved outer surface in a processing field, etc., a plurality of noise reduction assemblies can be connected by passing the rope through the metal eyelet 105, or the noise reduction assembly can be hung by passing the rope through the metal eyelet 105, so that the noise generation place is completely shielded by the plurality of noise reduction assemblies.

[0031] Embodiment two: the embodiment is basically the same as the previous embodiment, the difference is that the rotating connection assembly 201 includes a plurality of through holes two 2011 arranged on the four edges of the baffle 101, and the front end of the baffle 101 around the through hole two 2011 is provided with a hinge plate 2015, and the hinge plate 2015 is provided with a through hole three 2012.

[0032] Specifically, a plurality of threaded rods two 2013 are arranged between the baffles 101, the threaded rods two 2013 pass through the metal eyelet 105, the through hole three 2012 and the two through holes two 2011, and the threaded rods two 2013 are threadedly connected with the nuts two 2014 at both ends.

[0033] As can be seen from the above, when the device is used outdoors, such as in a construction site, a corresponding number of devices can be selected according to the specifications of the noise source. After the threaded rod 2013 passes through the through hole 2012, the threaded rod 2013 is fixed to the baffle 101 by the nut 2014. The hinged plate 2015 is fixed to the baffle 101, and then the other end of the hinged plate 2015 is connected to another baffle 101 through the above steps. Then, the multiple devices are connected together with the hinged plate 2015 as the center, and the baffle 101 is rotated towards the hinged plate 2015. The adjacent devices form an angle, and the connection is adjusted in sequence to form a noise reduction fence that covers the noise source.

[0034] In this embodiment, the support and fixing assembly 202 includes a plurality of trapezoidal clamping grooves 2021 arranged on the four edges of the baffle 101, two support seats 2022 arranged at the bottom of the baffle 101, and an insertion slot 2025 arranged on the support seat 2022 at the periphery of the baffle 101. The limiting bolt 2024 is threadedly arranged at both ends of the support seat 2022.

[0035] Specifically, the inner side of the insertion slot 2025 is provided with an elastic clamping block 2023, and the elastic clamping block 2023 is matched with the trapezoidal clamping groove 2021.

[0036] As can be seen from the above, when the personnel need to reduce the noise of small indoor equipment, the baffle 101 is inserted into the insertion slot 2025 on the support seat 2022, and the support seat 2022 is moved until the elastic clamping block 2023 is aligned with the trapezoidal clamping groove 2021. The elastic clamping block 2023 will be clamped into the trapezoidal clamping groove 2021 by its own elasticity, which not only self-limits the position of the support seat 2022, but also prompts the personnel that the support seat 2022 has been installed to the specified position, having a foolproof effect. Then rotate the limiting bolt 2024 until the front end contacts the baffle 101, and the contact friction force can be used to limit the position of the support seat 2022. The support seat 2022 increases the contact range of the device with the ground, and can stand the device on the ground to form a noise reduction screen for small noise equipment, increasing the application range of the device and facilitating personnel use. When the support seat 2022 needs to be removed, the elastic clamping block 2023 will slide out of the trapezoidal clamping groove 2021 by using the inclined surface of the trapezoidal clamping groove 2021, without causing excessive resistance to the removal of the support seat 2022.

[0037] The design application is applied in a noise reduction scene. By removing the baffle 101, the noise reduction assembly can be deformed according to the shape of the noise equipment and tightly fit with the noise equipment. Multiple devices are connected together by the hinged plate 2015 to form a noise reduction fence. The support seat 2022 is installed at the bottom or side of the device to form a noise reduction screen. The application range is increased by adjusting the use scene.

[0038] It is important to note that the construction and arrangements of the application shown in the various exemplary embodiments are illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications can be made to the embodiments without departing from the novel teachings and advantages of the subject matter described herein (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters, mounting arrangements, use of materials, colors, orientations, locations, and the like). For example, the elements shown as integrally formed can be constructed of multiple parts or elements, the position of elements can be reversed or otherwise varied, and the nature or number of elements or positions can be modified or changed. Accordingly, all such modifications are intended to be included within the scope of the present inventive subject matter. The order or sequence of any process or method steps can be varied or re-sequenced without departing from the subject matter described herein. Any "open / closed" claims are intended to encompass the structure described herein, and not just the structure equivalent, but also the equivalent structure. Other substitutions, modifications, changes, and omissions can be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present inventive subject matter. Accordingly, the present inventive subject matter is not limited to particular embodiments described, but extends to various modifications that nevertheless fall within the scope of the appended claims.

[0039] Furthermore, in the interest of providing a concise description of the exemplary embodiments, not all features of an actual implementation can be described (i.e., those unrelated to the best mode of practicing the present inventive subject matter, or those that are common to the art are not described).

[0040] It is to be understood that in the development of any actual implementation, numerous implementation-specific decisions can be made. These development efforts can significantly impact the complexity of the illustrative embodiments described herein and the specifics of the illustrative embodiments can be incorporated into other implementations all without departing from the spirit and scope of the present inventive subject matter.

[0041] It should be noted that the above-mentioned embodiments are only used to illustrate the technical solutions of the present application but not to limit the present application, and although the present application is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the present application, and all should be included in the scope of the claims of the present application.

Claims

1. A multi-functional noise reduction device, characterized by: The utility model relates to a noise reduction mechanism (1) which comprises two baffles (101) and a noise reduction assembly between the two baffles (101). The noise reduction assembly comprises two layers of soundproof cloth (102) between the baffles (101), soundproof felt (103) between the two layers of soundproof cloth (102), and sound-absorbing cotton (104) between the soundproof felt (103) and the soundproof cloth (102). The fixing connection mechanism (2) comprises a plurality of rotating connection assemblies (201) arranged on the four sides of the baffles (101) and a support fixing assembly (202) arranged at the bottom of the baffles (101). A plurality of metal eyelets (105) are arranged on the four sides of the noise reduction assembly, a plurality of threaded rods (107) are arranged between the baffles (101), a plurality of through holes (106) are arranged at the four corners of the baffles (101), the threaded rods (107) pass through the metal eyelets (105) and the two through holes (106), and nuts (108) are threadedly connected to the two ends of the threaded rods (107).

2. The multi-functional noise reduction device of claim 1, wherein: The rotating connection assembly (201) comprises a plurality of through holes (2011) arranged on the four sides of the baffles (101), a hinge plate (2015) arranged at the front end of the baffles (101) on the periphery of the through holes (2011), and a through hole (2012) arranged on the hinge plate (2015).

3. The multi-functional noise reduction device of claim 1, wherein: A plurality of threaded rods (2013) are arranged between the baffles (101), the threaded rods (2013) pass through the metal eyelets (105), the through hole (2012), and the two through holes (2011), and nuts (2014) are threadedly connected to the two ends of the threaded rods (2013).

4. The multi-functional noise reduction device of claim 3, wherein: The support fixing assembly (202) comprises a plurality of trapezoidal clamping grooves (2021) arranged on the four sides of the baffles (101), two support seats (2022) arranged at the bottom of the baffles (101), an insertion slot (2025) arranged on the support seat (2022) on the periphery of the baffles (101), and limiting bolts (2024) threadedly arranged at the two ends of the support seat (2022).

5. The multi-functional noise reduction device of claim 1, wherein: An elastic clamping block (2023) is arranged on the inner side of the insertion slot (2025), and the elastic clamping block (2023) is matched with the trapezoidal clamping groove (2021).

6. The multi-functional noise reduction device of claim 5, wherein: ​

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