Sound insulation sealing structure

Abstract

The invention provides a sound insulation sealing structure which comprises an embedded assembly arranged on the peripheral wall face of a reverberation room door body and used for forming an assembly groove in the periphery of the reverberation room door body. The embedded assembly further comprises an inflation and deflation pipeline, and the inflation and deflation pipeline communicates with an external air source and is configured to provide an inflation and deflation channel. The air bag mounting base is arranged in the assembling groove and fixedly connected with the assembling groove, a containing groove is formed in the inner side of the air bag mounting base, and a ventilation structure communicated with the inflation and deflation pipeline is arranged in the containing groove; the at least one sealing air bag is arranged in the containing groove, and each sealing air bag is provided with at least two clamping bosses; and the pressing block assembly is fixedly connected with the air bag mounting base, presses the clamping boss and is configured to limit the displacement of the sealing air bag in the air bag mounting base.

Description

Technical Field

[0001] This application relates to the field of acoustic testing equipment technology, and more specifically, to a sound-insulating sealing structure. Background Technology

[0002] In the field of high-intensity acoustic testing equipment, the reverberation chamber, as a core testing device simulating the high-intensity acoustic environment experienced by spacecraft during on-orbit and launch phases, is widely used in high-intensity acoustic vibration testing and performance verification of spacecraft structures and equipment. To meet the requirements for spacecraft products entering and exiting the testing space, the reverberation chamber walls typically have door openings and are equipped with door structures. However, a gap of 45mm to 70mm exists between the door and the wall, requiring a dedicated sound-insulating sealing structure to achieve a tight seal. Otherwise, sound leakage will occur in the test sound field, reducing the simulation accuracy of the acoustic test and compromising the acoustic environment safety outside the reverberation chamber. However, existing reverberation chamber doors often use adhesive bonding to fix the sealing airbag in the mounting groove. Over time, the adhesive ages, causing the sealing ring to detach, and the airbag cannot fully retract into the groove. During the opening and closing of the door, the airbag is easily damaged by friction, preventing inflation. This not only results in a loss of sound insulation and sealing effect but, in severe cases, can also obstruct the normal opening and closing of the door, rendering the reverberation chamber unusable and affecting the development and testing progress of spacecraft models. Therefore, developing a sound insulation and sealing structure for the reverberation chamber door that can effectively prevent the sealing airbag from falling off, improve the sound insulation and sealing effect, and has high operational reliability has become a key issue that urgently needs to be solved in the field of high-intensity acoustic testing equipment technology. Summary of the Invention

[0003] The purpose of this application is to address the technical problems in related technologies by providing a sound-insulating and sealing structure. The specific solution is as follows: The first aspect of this application provides a soundproof sealing structure, comprising: an embedded component disposed on the periphery wall of a reverberation chamber door, for forming an assembly groove around the reverberation chamber door; the embedded component further comprising an inflation / deflation pipeline connected to an external air source and configured to provide an inflation / deflation channel; an airbag mounting base disposed in the assembly groove and fixedly connected to the assembly groove, the airbag mounting base having an inner receiving groove, and the receiving groove having a ventilation structure connected to the inflation / deflation pipeline; a sealing airbag, at least one of the sealing airbags being disposed in the receiving groove, each of the sealing airbags having at least two snap-fit ​​protrusions; and a pressure block assembly fixedly connected to the airbag mounting base and pressing the snap-fit ​​protrusions, configured to restrict the displacement of the sealing airbag within the airbag mounting base.

[0004] In some embodiments, the sealing airbag includes: an airbag body with an air inlet and outlet at the bottom, the air inlet and outlet being connected to the inflation / deflation pipeline; a side wing disposed on the outside of the airbag body, the snap-fit ​​protrusion being disposed on the side wing and configured to cooperate with the pressure block assembly to achieve anti-drop-off limiting of the sealing airbag.

[0005] In some embodiments, the pressure block assembly includes a snap-fit ​​groove disposed on the side of the pressure block assembly adjacent to the sealing airbag. The snap-fit ​​groove and the snap-fit ​​boss form a snap-fit ​​structure, configured to achieve bidirectional limiting of the sealing airbag in the axial and radial directions, preventing the sealing airbag from falling out of the receiving groove.

[0006] In some embodiments, the snap-fit ​​groove is a dovetail-shaped anti-detachment groove, and the snap-fit ​​boss is a trapezoidal snap-fit ​​boss adapted to the dovetail-shaped anti-detachment groove. The trapezoidal snap-fit ​​boss is embedded and engaged in the dovetail-shaped anti-detachment groove, configured to enable the pressure block assembly and the sealing airbag to form a snap-fit ​​limit.

[0007] In some embodiments, the pressure block assembly includes: a first pressure block, at least two of which are provided and are securely connected to the airbag mounting base, wherein the two first pressure blocks are symmetrically arranged on both sides of the sealing airbag and configured to press and fix the corresponding snap-fit ​​boss of the sealing airbag.

[0008] In some embodiments, in response to the soundproof sealing structure including two or more of the sealing airbags, the pressure block assembly further includes: a second pressure block, which is fastened to the airbag mounting base and configured to press and fix with adjacent snap-fit ​​bosses of two adjacent sealing airbags.

[0009] In some embodiments, an adhesive layer is provided between the pre-embedded component and the airbag mounting base, configured to enhance the sealing and connection strength of the connection surface and help reduce gap sound leakage.

[0010] In some embodiments, the pre-embedded component includes: a pre-embedded part, which is a pre-embedded fixing structure, wherein the surface of the pre-embedded part is flush with the wall of the reverberation chamber, and the width of the pre-embedded part is greater than the width of the airbag mounting base, configured to ensure the connection strength of the sound insulation and sealing structure.

[0011] In some embodiments, a grouting sealing layer is provided between the airbag mounting base and the embedded part, configured to fill the gap between the airbag mounting base and the embedded part and block the sound leakage path.

[0012] In some embodiments, the side wings and the airbag body are made of an integral molding process, and the snap-fit ​​boss and the side wings are made of the same material to ensure the sealing performance and structural strength of the overall airbag structure and avoid air leakage or breakage at the connection.

[0013] Compared with related technologies, the above-described solutions of this application have at least the following beneficial effects: The sound insulation and sealing structure provided in this application includes a sealing airbag with a snap-fit ​​boss. The snap-fit ​​boss can cooperate with the pressure block assembly to form a snap-fit ​​structure, which can achieve axial and radial bidirectional limiting of the sealing airbag in high sound intensity and strong vibration environment, effectively preventing the airbag from falling off, slipping, or deviating. The overall structure has stronger stability, better sound insulation and sealing effect, and significantly improved service life.

[0014] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0015] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings: Figure 1 This is a schematic diagram of a soundproof seal according to an exemplary embodiment.

[0016] Figure 2 This is a schematic diagram of the structure of a sealed airbag according to an exemplary embodiment.

[0017] Figure label: 1000 sound insulation and sealing structure; Embedded components 100, embedded parts 110, adjusting devices 120, inflation / deflation pipelines 130, airbag mounting base 200, sealing airbag 300, airbag body 310, side wings 320, snap-fit ​​bosses 321, pressure block assembly 400, first pressure block 410, second pressure block 420. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. “Multiple” generally includes at least two, and other quantifiers are similar.

[0020] It should be understood that although the terms "first," "second," "third," etc., may be used in the embodiments of this application, these descriptions should not be limited to these terms. These terms are only used to distinguish the described objects. For example, "first" may also be referred to as "second," and similarly, "second" may also be referred to as "first," without departing from the scope of the embodiments of this application. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] It should be understood that the term "and / or" as used herein is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0022] It is further understood that the terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “up,” “down,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0023] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] Depending on the context, the words “if” or “suppose” as used here can be interpreted as “when” or “in response to determination” or “in response to detection.” Similarly, depending on the context, the phrases “if determination” or “if detection (of the stated condition or event)” can be interpreted as “when determination” or “in response to determination” or “when detection (of the stated condition or event)” or “in response to detection (of the stated condition or event).”

[0025] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or device. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or device that includes said element.

[0026] In related technologies, sound insulation and sealing structures often use inflatable sealing airbags as the sealing body. These airbags are fixed to the door perimeter in mounting grooves by adhesive bonding or pressing with ordinary flat pressure strips. Embedded parts are set inside the wall to install the airbag base, and an inflation port is set at the bottom of the airbag to connect to an external air source to achieve inflation and deflation sealing. However, this design has many technical problems: in environments with high sound intensity and strong vibration, the adhesive is prone to aging and failure; the flat pressure strip cannot restrict the axial and radial displacement of the airbag, which can lead to the airbag easily loosening, lifting, or falling out; and there is no positioning structure between the airbag and the pressure block, which can easily slip circumferentially and move radially during repeated inflation and deflation, resulting in gaps and misalignment. At the same time, the sealing reinforcement between the embedded parts and the airbag base is insufficient, resulting in gaps and sound leakage, and loose connections, which further increases the risk of airbag loosening.

[0027] To address the aforementioned technical problems, this application provides a soundproof sealing structure, comprising: an embedded component disposed on the periphery of the reverberation chamber door, used to form an assembly groove around the reverberation chamber door; the embedded component further comprising an inflation / deflation pipeline connected to an external air source, configured to provide an inflation / deflation channel; an airbag mounting base disposed in the assembly groove and fixedly connected to the assembly groove, the airbag mounting base having an inner receiving groove, and the receiving groove having a ventilation structure connected to the inflation / deflation pipeline; a sealing airbag, at least one of the sealing airbags disposed in the receiving groove, each sealing airbag having at least two snap-fit ​​protrusions; and a pressure block assembly fixedly connected to the airbag mounting base and pressing the snap-fit ​​protrusions, configured to restrict the displacement of the sealing airbag within the airbag mounting base.

[0028] The sound insulation and sealing structure provided in this application includes a sealing airbag with a snap-fit ​​boss. The snap-fit ​​boss can cooperate with the pressure block assembly to form a snap-fit ​​structure, which can achieve axial and radial bidirectional limiting of the sealing airbag in high sound intensity and strong vibration environment, effectively preventing the airbag from falling off, slipping, or deviating. The overall structure has stronger stability, better sound insulation and sealing effect, and significantly improved service life, effectively reducing sound leakage and ensuring the smooth progress of reverberation chamber sound test.

[0029] The optional embodiments of this application are described in detail below with reference to the accompanying drawings.

[0030] This application provides a sound insulation and sealing structure 1000 for use in the door of a high-intensity reverberation chamber, including a pre-embedded component 100, an airbag mounting base 200, a sealing airbag 300, and a pressure block component 400.

[0031] In some embodiments, the pre-embedded component 100 includes a pre-embedded part 110 and an adjustment device 120. The pre-embedded part 110 and the adjustment device 120 are fixed by screw connection or welding. An assembly groove composed of the pre-embedded component 100 is formed at the perimeter wall of the reverberation chamber door.

[0032] The embedded part 110 is a pre-embedded fixing structure, preferably a plate-shaped rigid metal structure, such as a steel plate or an aluminum alloy plate. The surface of the embedded part 110 is smoothed, and the pre-embedding work is completed during the civil construction stage of the wall around the reverberation chamber door opening. The outer surface of the pre-embedded part 110 after pre-embedding is flush with the wall surface of the reverberation chamber, reducing the connection gap when connecting subsequent components.

[0033] In some embodiments, the width of the embedded part 110 is greater than the width of the airbag mounting base 200. The width of the embedded part 110 is at least 50mm wider than the airbag mounting base 200, configured to further improve installation stability and adaptability, and ensure the connection strength of the sound insulation and sealing structure 1000. For example, the width of the embedded part 110 is 80mm, and the width of the airbag mounting base 200 is 30mm.

[0034] The structural design of the embedded part 110 being more than 50mm wider than the airbag mounting base 200 provides installation tolerance space during the assembly process. Even if the embedded part 110 is slightly offset, the airbag mounting base 200 can be accurately fixed within the effective range of the embedded part 110 without having to re-chisel and modify the wall to adjust the position of the embedded part 110, thus reducing the difficulty of construction and assembly.

[0035] At the same time, this size difference design can significantly increase the contact area between the embedded part 110 and the wall, disperse the vibration load transmitted by the airbag mounting base 200, avoid cracking or loosening at the connection between the embedded part 110 and the wall due to excessive local stress, ensure the installation firmness of the entire sound insulation and sealing structure 1000, and adapt to the special use environment of continuous strong vibration in high sound intensity reverberation chamber.

[0036] In addition, the dimensional difference between the embedded part 110 and the airbag mounting base 200 can provide space for the bonding materials of the subsequent adhesive layer and grouting sealing layer, which can fill all the gaps between the airbag mounting base 200 and the embedded part 110, and completely block the path of sound leakage through the gaps.

[0037] In some embodiments, the adjustment device 120 is a spacing adjustment structure with a screw fine-tuning spacing adjustment function. The adjustment stroke of the adjustment device 120 is adapted to a door opening gap range of 45mm to 70mm and is configured to adjust the assembly position of the sealing airbag 300.

[0038] In some embodiments, the adjustment device 120 may be composed of an L-shaped rigid metal structure. The L-shaped structural design can adapt to the installation space layout between the reverberation chamber wall and the airbag mounting base 200, taking into account both the spacing adjustment and structural support functions, and further improving the installation stability and spatial adaptability of the overall sealing structure.

[0039] In some embodiments, such as Figure 1 As shown, one side of the adjusting device 120 is fixedly connected to the connecting surface of the embedded part 110, and the other side is fixedly connected to the outer wall of the airbag mounting base 200. The connection between the adjusting device 120, the embedded part 110, and the airbag mounting base 200 can be a screw connection or welding. This configuration is designed to precisely adjust the distance between the airbag mounting base 200 and the reverberation chamber door, compensating for potential dimensional errors in the production or pre-processing stages, ensuring that the sealing airbag 300 can precisely fit against the edge of the door, thus guaranteeing a sealing effect.

[0040] In some embodiments, the pre-embedded component 100 further includes an inflation / deflation pipeline 130. The inflation / deflation pipeline 130 is a flexible pipe with high pressure resistance and leak-proof characteristics, which can adapt to the installation space of the reverberation chamber, avoid air path blockage caused by pipe bending, and ensure smooth inflation / deflation operation. The diameter of the inflation / deflation pipeline 130 is adapted to the inlet and outlet of the sealing airbag 300. One end of the inflation / deflation pipeline 130 is sealed and snapped or glued to the inlet and outlet of the sealing airbag 300, and the other end is connected to an external air source or vacuum pump, and a sealing gasket is provided at the connection position. The inflation / deflation pipeline 130 provides a stable inflation / deflation channel for the sealing airbag 300, realizing the inflation expansion and deflation contraction of the sealing airbag 300, effectively preventing air leakage in the air distribution channel, ensuring that the airbag can quickly reach the preset inflation pressure and maintain stable pressure, so that the airbag fits tightly with the door and improves the sealing effect.

[0041] In some embodiments, the airbag mounting base 200 is an annular rigid structure that is adapted to the contour of the doorway of the reverberation chamber. The airbag mounting base 200 has an internal receiving groove that matches the shape of the sealing airbag 300, configured to provide installation space for the sealing airbag 300, restricting the overall displacement of the sealing airbag 300, allowing the sealing airbag 300 to fit snugly against the airbag mounting base 200, reducing the gap between the sealing airbag 300 and the airbag mounting base 200, and reducing the gap between the airbag mounting base 200 and the embedded part 110, thus structurally blocking the path of sound leakage.

[0042] In some embodiments, the sealing airbag 300 is housed in the receiving groove of the airbag mounting base 200. The sealing airbag 300 may be made of rubber and has an air inlet and outlet at the bottom. The air inlet and outlet are connected to the inflation / deflation pipeline 130 and form a sealed connection. This configuration is to achieve the sealing of the reverberation chamber door by inflating and deflating the sealing airbag 300.

[0043] In some embodiments, the sealing airbag 300 includes an airbag body 310 and at least two side wings 320. Each side wing 320 has at least one snap-fit ​​boss 321 integrally formed on it. The snap-fit ​​boss 321 is used to engage with the pressure block assembly 400 to limit the sealing airbag 300 and prevent the sealing airbag 300 from falling off.

[0044] This application does not impose a specific limit on the number of side wings 320; there can be two or more. The side wings 320 can be disposed on both sides of the airbag body 310 or on the periphery of the airbag body 310. The side wings 320 are integrally formed with the airbag body 310, reducing structural gaps and avoiding air leakage or structural breakage caused by connection gaps.

[0045] In some embodiments, the side wing 320 of the sealing airbag 300 is provided with a positioning protrusion on the side facing the inner wall of the receiving groove. The positioning protrusion is a long strip-shaped protrusion that extends circumferentially along the side wing 320. The cross-sectional shape of the positioning protrusion is precisely matched with the positioning groove opened at the corresponding position on the inner wall of the receiving groove.

[0046] The positioning protrusion can be embedded in the positioning groove to form a tight concave-convex fit. The positioning protrusion cooperates with the snap-fit ​​protrusion 321 on the outer side of the side wing 320 to form a double limiting structure, which further restricts the circumferential sliding and radial movement of the sealing airbag 300 in the receiving groove, enhances the anti-dislodgement effect of the sealing airbag 300, and ensures that the sealing airbag 300 maintains a stable assembly position under high sound intensity vibration environment, avoiding sealing failure or structural damage caused by displacement.

[0047] In some embodiments, the pressure block assembly 400 is fixedly connected to the airbag mounting base 200 and presses against the locking boss 321, configured to limit the displacement of the sealing airbag 300 within the airbag mounting base 200, thereby achieving anti-detachment fixation of the sealing airbag 300.

[0048] The pressure block assembly 400 is provided with a snap-fit ​​groove on the side adjacent to the sealing airbag 300. The snap-fit ​​groove and the snap-fit ​​protrusion 321 of the sealing airbag 300 form a snap-fit ​​structure, which can realize the bidirectional limiting of the sealing airbag 300 in the axial and radial directions, effectively preventing the sealing airbag 300 from falling out of the receiving groove. This replaces the traditional glue bonding and ordinary flat pressure strip pressing method, improving the fixing reliability.

[0049] Furthermore, the snap-fit ​​groove can be a dovetail-shaped anti-detachment groove, and the snap-fit ​​boss 321 is a trapezoidal snap-fit ​​boss 321 adapted to the dovetail-shaped anti-detachment groove. The trapezoidal snap-fit ​​boss 321 is embedded and snapped into the dovetail-shaped anti-detachment groove. This structural design can further improve the stability of the snap-fit ​​limit, prevent the snap-fit ​​boss 321 from coming loose from the snap-fit ​​groove, and facilitate precise positioning during assembly.

[0050] In some embodiments, such as Figure 1 As shown, the pressure block assembly 400 includes a first pressure block 410, of which at least two are provided and are securely connected to the airbag mounting base 200. The two first pressure blocks 410 are symmetrically arranged on both sides of the sealing airbag 300 and configured to press and fix with the corresponding snap-fit ​​protrusions 321 of the sealing airbag 300. By symmetrically pressing, the force on both sides of the sealing airbag 300 is evenly distributed, avoiding deformation or tearing of the airbag caused by excessive local force, and further enhancing the tightness of the snap-fit ​​protrusions 321 and the snap-fit ​​grooves.

[0051] In some embodiments, in response to the sound insulation sealing structure 1000 including two or more sealing airbags 300, the pressure block assembly 400 further includes a second pressure block 420. The second pressure block 420 is fastened to the airbag mounting base 200 and configured to press and fix with adjacent snap-fit ​​protrusions 321 of two adjacent sealing airbags 300. The second pressure block 420 enables the connection and fixation of adjacent sealing airbags 300, avoids gaps and misalignments between adjacent airbags, ensures the continuity of the seal, reduces the number of pressure blocks used, simplifies the assembly process, and improves the assembly efficiency and sealing reliability in multi-airbag scenarios.

[0052] In some embodiments, an adhesive layer is provided between the embedded component 100 and the airbag mounting base 200. The adhesive layer is a high-adhesion, aging-resistant, and vibration-resistant sealing adhesive material, such as polyurethane sealant or epoxy structural adhesive. It fully covers the connection surface between the embedded component 100 and the airbag mounting base 200 and fits seamlessly. This configuration enhances the sealing and connection strength of the connection surface, helps reduce gap leakage, and can also buffer the impact force caused by vibration, prevent the connection surface from loosening, and indirectly protect the stability of the snap-fit ​​structure.

[0053] In some embodiments, a grouting sealing layer is provided between the airbag mounting base 200 and the embedded part 110. The grouting sealing layer is formed by casting epoxy grout and is cast into all gaps between the airbag mounting base 200 and the embedded part 110. After curing, it forms a seamless and rigid sealing structure. It is configured to fill the gaps between the airbag mounting base 200 and the embedded part 110, block the sound leakage path at the gaps, greatly improve the overall sound insulation and sealing effect, and at the same time enhance the connection strength between the airbag mounting base 200 and the embedded part 110, improve the vibration resistance of the overall structure, and adapt to the continuous vibration environment of the high-intensity reverberation chamber.

[0054] In some embodiments, the assembly method of the above-mentioned sound insulation and sealing structure 1000 includes the following steps: First, during the civil construction stage of the reverberation chamber, the wall embedded part 110 of the reverberation chamber is embedded in a preset position to ensure that the surface of the embedded part 110 is flush with the wall surface, and the surface of the embedded part 110 is cleaned after curing; Second, an adhesive layer is laid on the connecting surface of the embedded part 110, and one end of the adjustment device 120 is fixed to the embedded part 110 by screws or welding, and the spacing of the adjustment device 120 is adjusted to a preset value according to the gap size between the reverberation chamber door and the wall; Third, the airbag mounting base 200 is fixed to the other end of the adjustment device 120 by screws or welding to ensure that the receiving groove of the base faces the door side; Fourth, the sealing airbag 300 is precisely housed in the receiving groove of the airbag mounting base 200, so that the air inlet and outlet of the airbag face a preset direction. Fifth step: Press the first pressing block 410 and the second pressing block 420 of the pressing block assembly 400 onto the side wing 320 of the sealing airbag 300 respectively, so that the snap-fit ​​boss 321 of the sealing airbag 300 and the snap-fit ​​groove of the pressing block are precisely snapped into place. Insert connecting screws and tighten the pressing block assembly 400 and the airbag mounting base 200 according to the preset torque to achieve locking and fixing of the pressing block assembly 400 and the airbag mounting base 200. Sixth step: Connect one end of the inflation / deflation pipeline 130 to the air inlet / outlet of the sealing airbag 300 in a sealed manner, and connect the other end to an external air source or vacuum pump. Seventh step: Pour grouting material into the gap between the airbag mounting base 200 and the pre-embedded part 110 on the wall of the reverberation chamber, ensuring that the grouting material fully fills all gaps. After a preset time, a grouting sealing layer is formed, completing the assembly of the entire sealing structure. The preset time can be 24-48 hours.

[0055] The sound insulation and sealing structure 1000 provided in this application can completely solve the problem of airbag detachment, achieve sound insulation and sealing of the high-intensity reverberation chamber, and improve the sealing effect. It solves the problems of airbag damage, detachment, or inability to inflate caused by scraping in related technologies, ensures the sound insulation and sealing effect, improves the operational reliability of the reverberation chamber door system, reduces equipment maintenance costs, and ensures the smooth progress of spacecraft model development and testing.

[0056] The specific structure, working principle, and beneficial effects of the sound insulation and sealing structure provided in this application embodiment can be referred to the sound insulation and sealing structure described in any of the above embodiments, and will not be repeated here.

[0057] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the systems or apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the descriptions are relatively simple, and relevant parts can be referred to the method section.

[0058] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A soundproof sealing structure, characterized in that, include: An embedded component is set on the wall around the reverberation chamber door to form an assembly groove around the reverberation chamber door; the embedded component also includes a gas filling and discharging pipeline, which is connected to an external gas source and configured to provide a gas filling and discharging channel. An airbag mounting base is disposed in the assembly slot and fixedly connected to the assembly slot. An accommodating slot is provided on the inner side of the airbag mounting base, and a ventilation structure communicating with the inflation / deflation pipeline is provided inside the accommodating slot. A sealing airbag, at least one of the sealing airbags is disposed in the receiving groove, and each of the sealing airbags has at least two snap-fit ​​protrusions; The pressure block assembly is fixedly connected to the airbag mounting base and presses against the snap-fit ​​boss, configured to limit the displacement of the sealing airbag within the airbag mounting base.

2. The sound insulation and sealing structure according to claim 1, characterized in that, The sealing airbag includes: The airbag body has an air inlet and outlet at the bottom, and the air inlet and outlet are connected to the inflation and deflation pipeline; The side wing is located on the outside of the airbag body, and the snap-fit ​​protrusion is located on the side wing, configured to cooperate with the pressure block assembly to achieve the anti-drop limit of the sealed airbag.

3. The sound insulation and sealing structure according to claim 2, characterized in that, The briquetting assembly includes: A snap-fit ​​groove is provided on the side of the pressure block assembly adjacent to the sealing airbag. The snap-fit ​​groove and the snap-fit ​​protrusion form a snap-fit ​​structure, which is configured to realize the bidirectional limiting of the sealing airbag in the axial and radial directions, and prevent the sealing airbag from falling out of the receiving groove.

4. The sound insulation and sealing structure according to claim 3, characterized in that, The snap-fit ​​groove is a dovetail-shaped anti-detachment groove, and the snap-fit ​​protrusion is a trapezoidal snap-fit ​​protrusion adapted to the dovetail-shaped anti-detachment groove. The trapezoidal snap-fit ​​protrusion is embedded and snapped into the dovetail-shaped anti-detachment groove, configured to make the pressure block assembly and the sealing airbag form a snap-fit ​​limit.

5. The sound insulation and sealing structure according to claim 4, characterized in that, The briquetting assembly includes: At least two first pressure blocks are provided and are securely connected to the airbag mounting base. The two first pressure blocks are symmetrically arranged on both sides of the sealing airbag and configured to press and fix the corresponding snap-fit ​​protrusion of the sealing airbag.

6. The sound insulation and sealing structure according to claim 5, characterized in that, In response to the soundproof sealing structure comprising two or more of the sealing airbags, the pressure block assembly further includes: The second pressure block is fastened to the airbag mounting base and is configured to press and fix the adjacent snap-fit ​​protrusions of the two adjacent sealing airbags.

7. The sound insulation and sealing structure according to claim 1, characterized in that, An adhesive layer is provided between the pre-embedded component and the airbag mounting base, which is configured to enhance the sealing and connection strength of the connection surface and help reduce sound leakage through gaps.

8. The sound insulation and sealing structure according to claim 1, characterized in that, The embedded components include: The embedded part is a pre-embedded fixing structure. The surface of the embedded part is flush with the wall of the reverberation chamber, and the width of the embedded part is greater than the width of the airbag mounting base. This configuration is to ensure the connection strength of the sound insulation and sealing structure.

9. The sound insulation and sealing structure according to claim 8, characterized in that, A grouting sealing layer is provided between the airbag mounting base and the embedded part, which is configured to fill the gap between the airbag mounting base and the embedded part and block the sound leakage path.

10. The sound insulation and sealing structure according to claim 2, characterized in that, The side wings and the airbag body are made of the same integral molding process, and the snap-fit ​​boss and the side wings are made of the same material to ensure the sealing performance and structural strength of the overall airbag structure and avoid air leakage or breakage at the connection.

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