High-sound-insulation electrically operated gate system for large reverberation room

Abstract

The invention discloses a high-sound-insulation electric door system for a large reverberation room, and aims to provide a technical scheme for effectively solving the problems that a traditional electric door system is poor in sound insulation, unstable in door body, difficult to open and the like in a high-sound-intensity environment. The high-sound-insulation electrically operated gate system comprises a gate body assembly, a driving assembly, a sealing assembly, a cover plate assembly, a guiding assembly and the like, the functions of efficient sound insulation, overturning resistance and passage opening can be achieved in a high-sound-intensity test, and the test accuracy of a reverberation chamber and the stability of an experimental environment are greatly improved. The system can meet the strict requirements of a large reverberation room under the extreme audio test condition, the high sound insulation performance of the door body in the closed state is ensured through the special material and structural design, the sound insulation effect can be further improved through the air bag sealing system, and meanwhile stable opening and closing and long-term use stability of the door body are ensured.

Description

Technical Field

[0001] This application belongs to the technical field of high sound insulation electric door systems, specifically relating to a high sound insulation electric door system for large reverberation chambers. Background Technology

[0002] In modern acoustic testing, especially for large reverberation chambers, the requirements are increasingly stringent. Ensuring smooth door opening and stability while maintaining high sound insulation is a major technological challenge. As a specialized environment for acoustic testing, a reverberation chamber requires both effective sound insulation and rapid passage, particularly under high sound intensity conditions. Traditional electric door systems often struggle to meet these demands. Because the opening and closing of reverberation chamber doors is affected by the test sound intensity, many existing door systems suffer from inadequate sound insulation and sound wave penetration when closed, and may even exhibit instability and difficulty in opening over long-term use. Especially for large reverberation chambers, the door's size and weight necessitate that the door's guiding and driving systems possess sufficient strength and precision to ensure stability during operation.

[0003] Furthermore, existing high-sound-insulation door systems generally lack good sealing designs, resulting in ineffective sound insulation performance. While most systems can provide some sound insulation, the gaps after the door is closed due to poor sealing allow sound waves to penetrate, failing to completely block sound wave propagation and thus affecting the accuracy and reliability of test results. Therefore, developing a new type of high-sound-insulation electric door system that can ensure sound insulation performance under high-intensity sound fields while also ensuring smooth opening and closing and easy operation has become an urgent technical challenge to be solved in the field of acoustic laboratories and testing equipment. Summary of the Invention

[0004] One objective of this application is to provide a high-sound-insulation electric door system for large reverberation chambers. This system employs a sealed structure and an efficient drive mechanism to effectively reduce sound wave penetration during door opening and closing, while ensuring stable door operation. By incorporating sealing airbags around the door and utilizing air pressure principles, the system achieves highly efficient sound insulation when the door is closed. Furthermore, a special guiding device ensures the stability of the door during opening and closing, avoiding common problems of unstable operation and poor sound insulation found in traditional electric doors.

[0005] To achieve the above objectives, the first aspect of this application provides a high sound insulation electric door system for a large reverberation chamber. The high sound insulation electric door system is installed at the doorway of the reverberation chamber and is used to achieve sound insulation, anti-overturning and passage functions in high sound intensity tests.

[0006] The high sound insulation electric door system includes:

[0007] A door assembly comprising two door panels that can move toward each other, each door panel being able to move along a bottom guide assembly on the ground and a top guide assembly on the top;

[0008] The drive assembly, connected to each door, is used to drive the door to open and close along the bottom guide rail;

[0009] A sealing assembly includes a first sealing member and a second sealing member, wherein the first sealing member is disposed around the door opening and the second sealing member is disposed on the edge of each door body away from the door opening, so that when the door body is closed, it is inflated to fit against the door body and fill the gap between the door bodies.

[0010] The cover plate assembly is located on one side of the bottom of the doorway and is used to descend to form a passage surface with the ground when the door is opened, and rise to a clearance position before the door is closed.

[0011] A top guide assembly includes a guide wheel disposed at the top of the door and a top guide rail fixed to the wall of the reverberation chamber. The guide wheel rolls within the top guide rail to ensure stable opening and closing of the door.

[0012] The bottom guide assembly includes a bottom guide rail disposed on the door body and bottom guide wheels disposed on both sides of the bottom guide rail. The bottom guide wheels and the bottom guide rail form a double-sided limiting cooperation to ensure that the door body runs smoothly during opening and closing.

[0013] Furthermore, each of the gate bodies includes a gate frame and a filling material layer disposed inside the gate frame; the filling material layer is concrete or sound-absorbing damping material to provide sound insulation and load-bearing performance.

[0014] Furthermore, the drive components are all fixedly installed at both ends of the bottom of the doorway. The drive components include a rack, a gear, and a motor. The rack is fixedly connected to the corresponding door body through a rack support fixedly installed on one side of the bottom of each door body. The gear is installed at the bottom of the rack and meshes with the rack. The motor is fixedly installed on one side of the bottom of the door through a mounting bracket.

[0015] Furthermore, the first sealing component is a door opening perimeter sealing airbag arranged around the door opening, and the door opening perimeter sealing airbag is fixedly installed on the wall of the reverberation chamber; the second sealing component includes an intermediate sealing airbag and a wedge, and the intermediate sealing airbag and the wedge are respectively arranged on the side edges of different door bodies.

[0016] Furthermore, a channel is provided on the bottom front side of the door assembly, the cover plate assembly is disposed in the channel and the drive assembly is disposed below the cover plate assembly; the cover plate assembly includes a cover plate and an electric push rod connected to the cover plate.

[0017] Furthermore, one end of the electric push rod is fixed in the pit structure inside the channel, and the other end is connected to the bottom of the cover plate; one end of the cover plate is fixedly connected to the bottom surface through a rotary bearing, so that the cover plate moves down when the door is opened so that its upper surface is flush with the ground, and moves up to avoid the door before the door is closed.

[0018] Furthermore, the top guide assembly includes a top guide rail fixing device, a top guide rail, and a top guide wheel; the top guide rail fixing device is fixedly installed on the surface of the top wall of the reverberation chamber, and the top guide rail is fixedly installed at the bottom of the top guide rail fixing device.

[0019] Furthermore, each of the gate bodies is fixedly provided with top guide wheels at both ends of the top, and the top guide wheels can roll within the top guide rail.

[0020] Furthermore, the bottom guide assembly includes a traveling wheel, a bottom guide rail, and a bottom guide wheel; each of the bottom ends of the gate body is provided with a traveling wheel; the bottom guide rail is fixed to the ground by anchor bolts, and the traveling wheel can roll on the bottom guide rail.

[0021] Furthermore, each of the walking wheels is provided with a bottom guide wheel on both sides, and the bottom guide wheel contacts the side of the bottom guide rail to limit the lateral displacement of the door.

[0022] The embodiments of this application have the following technical effects:

[0023] (1) This application provides a high sound insulation electric door system for large reverberation chambers. Through the systematic integration of door structure, sealing structure, drive structure and guide structure, the entire door has significantly better sound insulation stability, structural strength and operational reliability than the prior art in high sound intensity test environment. Attached Figure Description

[0024] The accompanying drawings, as part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application, but do not constitute an undue limitation of this application. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0025] Figure 1 This is a front view of a high-sound-insulation electric door system for a large reverberation chamber according to this application, when the door is closed.

[0026] Figure 2 This is a side view of a high-sound-insulation electric door system for a large reverberation chamber according to this application;

[0027] Figure 3 This is a partial enlarged view of the bottom of a side view of a high sound insulation electric door system for a large reverberation chamber according to this application;

[0028] Figure 4 for Figure 2 A magnified view of a section at point I;

[0029] Figure 5 for Figure 2 Enlarged view of section II in the middle;

[0030] Figure 6 This is a top view of a high-sound-insulation electric door system for a large reverberation chamber as described in this application, when the door is closed.

[0031] Figure 7 This is a top view of a high-sound-insulation electric door system for a large reverberation chamber as described in this application, when the door is open.

[0032] Figure 8 for Figure 6 A magnified view of a section at point III.

[0033] in:

[0034] 1. Right-side gate; 2. Left-side gate; 3. Central sealing airbag; 4. Sealing airbags around the door opening; 5. Top guide wheel; 6. Top guide rail; 7. Rack; 8. Gear; 9. Motor; 10. Bottom guide wheel; 11. Traveling wheel; 12. Bottom guide rail; 13. Electric push rod; 14. Cover plate; 15. Top guide rail fixing device; 16. Wedge; 17. Mounting base; 18. Rotary bearing; 19. Rack support. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this disclosure clearer, the disclosure will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0036] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the disclosure. The singular forms “a,” “the,” and “the” as used in the embodiments of this disclosure 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 similarly intended.

[0037] It should be understood that although the terms first, second, third, etc., may be used to describe embodiments of this disclosure, 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 without departing from the scope of embodiments of this disclosure, and similarly, second may also be referred to as first. Furthermore, the terms "first," "second," "third," etc., are configured for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] 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.

[0039] 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.

[0040] In the description of this disclosure, it should be noted that, unless otherwise expressly 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.

[0041] 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.

[0042] This application discloses a high-sound-insulation electric door system for large reverberation chambers. It addresses the long-standing technical pain points of existing large reverberation chambers under high sound intensity test environments, such as insufficient sound insulation, easy deformation of door structure, unstable operation, poor sealing performance, restricted passage, and insufficient reliability of drive mechanism. Through the systematic linkage design of door body components, drive components, sealing components, cover plate components, top guide components, and bottom guide components, an electric door system with high sound insulation, high stability, high strength, high safety, and high operational reliability is formed.

[0043] Traditional large reverberation chamber doors are often susceptible to structural vibrations under high sound pressure environments due to their large size and high mass. In addition, factors such as unstable door guide structures, reliance on hard contact for door sealing, insufficient or uneven thrust in the drive mechanism lead to problems such as deviation of the running trajectory, incomplete closure, severe sound leakage at door gaps, aging of seals leading to deterioration of sound insulation performance, increased opening resistance or even jamming. Ultimately, this reduces the acoustic testing accuracy of the reverberation chamber and fails to meet the stringent requirements for airtightness and sound insulation performance in high sound intensity tests.

[0044] This application addresses the aforementioned deficiencies in the existing technology by providing an integrated high-sound-insulation electric door system. This system enables the door to maintain long-term stable operation in high-load, high-vibration, and even high-dynamic sound pressure environments. Furthermore, the soft airbag sealing method effectively avoids the unavoidable gap problems of hard-contact sealing, significantly improving the overall sound insulation performance of the reverberation chamber.

[0045] This application employs two door panels that can move in opposite directions, each consisting of a door frame and internal filling with concrete or sound-absorbing damping material. This structural design significantly enhances the door's sound insulation and structural load-bearing capacity. Unlike traditional doors that use lightweight filling panels or thin-layer sound insulation structures, this application uses high-density or high-damping sound-absorbing materials, enabling the door to effectively attenuate sound energy propagation, forming a high-quality sound barrier interface. Simultaneously, it enhances the overall rigidity of the door, making it less prone to structural deformation under high sound pressure or vibration conditions, thus preventing sound leakage caused by changes in the sealing interface due to structural deformation. This structural characteristic of the door not only improves sound insulation performance but also provides a physical basis for maintaining a stable posture during operation, ensuring reliable guidance and sealing effects in the subsequent system operation.

[0046] Regarding the stability of the door's operation, this application constructs a double-layered guiding structure using a top guide assembly and a bottom guide assembly. The top guide assembly includes a top guide rail fixing device, a top guide rail, and top guide wheels. The bottom guide assembly includes traveling wheels, a bottom guide rail, and bottom guide wheels. The door forms a multi-point guiding path within the top and bottom guide rails, ensuring the door maintains a straight and stable movement during opening and closing, avoiding lateral swaying, overturning, or trajectory deviation caused by inertia, door weight eccentricity, or sound pressure. In particular, the bottom guide wheels located on both sides of each traveling wheel can form a double-sided limiting engagement with the side of the bottom guide rail. This limiting method significantly restricts the lateral displacement of the door, ensuring that the door will not tilt laterally or collide with the side wall of the guide rail during movement. Compared to traditional solutions relying on a single-sided guide rail, this double-rail, lateral limiting structure is better suited to the actual working conditions of large reverberation chamber doors with high weight, high inertia, and frequent operation, greatly improving the stability of door opening and closing and the reliability of long-term operation.

[0047] Regarding the drive mechanism, this application employs a combination of rack, pinion, and motor drive. All drive components are fixed at both ends of the bottom of the doorway. Each rack is fixed to the bottom of the door body via rack supports, and the gear is located at the bottom of the rack and meshes with it. The motor is mounted on the side of the bottom of the doorway via a mounting bracket. The core technological advantage of this drive method lies in its ability to stably and linearly transmit the power output from the motor to the door body, allowing the door to move smoothly along the bottom guide rail. Traditional reverberation chamber doors commonly use push rods, chains, or even manual operation. These methods suffer from insufficient power, large starting impact, uneven transmission, and inaccurate control when dealing with high-quality doors. Especially when the door body has slight misalignment or increased frictional resistance, the force transmission is prone to jamming. This application, through rack and pinion meshing transmission, allows the driving force to be evenly applied to the bottom of the door body, avoiding the force concentration problem of push-pull structures and ensuring stable operation of the door even under high friction and high load conditions. Furthermore, since the motor is fixed in the bottom structure, it is easier to generate a stable driving torque in the direction of force, which fundamentally improves the reliability and impact resistance of the door during operation.

[0048] Regarding sealing performance, this application constructs a two-layer independent airbag-type sealing system by setting a first sealing component and a second sealing component. This solves the problems commonly found in traditional doors, such as uneven hard contact of the sealing surface, incomplete adhesion of the sealing strip, and the presence of tiny gaps after the door is closed, leading to sound leakage. The first sealing component is a sealing airbag arranged around the door opening. Because the airbag can produce a certain thickness of flexible expansion after inflation, it can automatically compensate for minor errors in the manufacturing or installation of the door, ensuring a stable fit between the door and the perimeter of the door opening after closure, avoiding structural gaps that affect sound insulation. The second sealing component is set on the opposite side edges of the two doors, using a middle sealing airbag or a combination of airbag and wedge block structure. This allows the middle gap area to be fully filled by the inflated airbag after the two doors are completely closed, forming a central sealing band and completely eliminating the sound leakage path between the doors. Traditional door seam sealing typically employs rubber strips or rigid sealing structures. These structures rely on the mechanical precision of the door during closure; even slight deviations in the door can lead to seal failure. This application, however, utilizes a flexible sealing method created by inflating an airbag, making the sealing interface more suitable for the high sound insulation requirements of a reverberation chamber. More importantly, the vibration-absorbing properties of the inflated airbag can absorb some structural vibrations, further blocking possible sound energy transmission paths through the structure, resulting in more stable and reliable overall sound insulation performance.

[0049] Specifically, this embodiment provides a high-sound-insulation electric door system for a large reverberation chamber, which is installed at the doorway of the reverberation chamber.

[0050] Specifically, the overall structure of the high sound insulation electric door system includes a right door 1, a left door 2, a middle sealing airbag 3, sealing airbags around the door opening 4, a top guide wheel 5, a top guide rail 6, a rack 7, a gear 8, a motor 9, a bottom guide wheel 10, a traveling wheel 11, a bottom guide rail 12, an electric push rod 13, a cover plate 14, a top guide rail fixing device 15, a wedge block 16, a mounting base 17, and a rotary bearing 18. Through the cooperation of these components, an electric door system that can maintain high sound insulation performance, high operational stability, and continuous durability in a high-intensity reverberation environment is formed.

[0051] Specifically, in this embodiment, the left door 2 and the right door 1 together constitute a door assembly, and each door is composed of a door frame and an internal filling material layer.

[0052] Specifically, the filling material layer uses concrete or sound-absorbing damping material, which can significantly improve the overall sound insulation and damping performance and enhance the structural strength of the door. This allows the two doors to maintain shape stability and uniform stress distribution even under large size, heavy weight, and high sound pressure conditions, and to be less susceptible to structural deformation due to vibration.

[0053] Specifically, the two doors can translate along the top guide assembly and the bottom guide assembly respectively to achieve the opening and closing function of the doors.

[0054] Specifically, the top guide wheel 5 of the top guide assembly is fixedly installed at the top ends of the left door 2 and the right door 1. The top guide rail 6 provides stable guidance through its limiting function. The top guide rail 6 is fixed to the top wall structure of the reverberation chamber by the top guide rail fixing device 15, so that the top guide rail 6 is located in a stable force-bearing surface and can withstand the upward guiding force and part of the lateral force generated during the operation of the door. This ensures that the top running trajectory of the two doors is always on the preset path and does not swing or derail.

[0055] Specifically, the bottom guide assembly consists of a bottom guide rail 12, traveling wheels 11, and bottom guide wheels 10. The bottom guide rail 12 is made of high-strength metal material and is fixed to the floor of the reverberation chamber with anchor bolts, so that it is tightly integrated with the building structure. The traveling wheels 11 are respectively set at the bottom ends of the right door 1 and the left door 2, so that they roll on the bottom guide rail 12 to support the weight of the door and provide the main rolling support force. The bottom guide wheels 10 are set on both sides of each traveling wheel 11, so that they form a double-sided limiting contact with the side of the bottom guide rail 12. This double-sided contact method effectively suppresses the lateral displacement of the door caused by inertia, vibration or driving force deviation, ensuring that the door will not deviate from the trajectory under high load conditions, thereby achieving the purpose of anti-overturning and anti-swaying.

[0056] Specifically, in order to drive the two gate bodies 1 and 2 to open and close, this embodiment sets drive components at both ends of the bottom of the gate opening.

[0057] Specifically, the drive assembly includes a rack 7, a gear 8, and a motor 9.

[0058] Specifically, the rack 7 is installed on the bottom side edge of the left gate 2 and the right gate 1, and is fixedly connected to the corresponding gate body by the rack support 19 fixedly set on one side of the bottom of each gate body. The tooth surface of the rack 7 faces the bottom guide rail 12 and maintains meshing with the gear 8.

[0059] Specifically, gear 8 is made of high-strength mechanical steel and is fixedly connected to the output shaft of motor 9. When motor 9 is powered on, it outputs torque quickly and stably. Through the meshing of gear 8 and rack 7, the driving power is evenly transmitted to the left gate 2 and the right gate 1, so that the gate moves linearly along the bottom guide rail 12.

[0060] Specifically, the motor 9 is fixed to one side of the bottom of the reverberation chamber door opening by the mounting base 17, so that the vibration generated by it during operation can be absorbed by the building structure, thereby reducing the interference of motor vibration on the door's running trajectory, and avoiding the loosening of sealing components or uneven guide pressure caused by motor structure vibration, ensuring a smooth and shock-free driving process.

[0061] Specifically, the meshing transmission method of rack 7 and gear 8 has higher transmission rigidity, lower friction loss and smoother control precision compared with traditional chain drive or push rod drive. This makes the speed change of the gate body more gentle during the start-up, operation and stop process, avoiding gate body jumping or structural impact caused by instantaneous fluctuation of driving force. This allows the whole system to remain stable and have a long service life under high frequency opening and closing conditions.

[0062] Specifically, in order to ensure the sound insulation performance of the system, this embodiment implements a double-layer sealing system, wherein the first sealing component, namely the sealing airbag 4 around the door opening, is installed around the door opening of the reverberation chamber and is fixed to the wall of the reverberation chamber by means of fixing components or structural groove embedding.

[0063] Specifically, when the left door 2 and the right door 1 are closed towards the center, the sealing airbags 4 around the door opening are inflated by the air source system, so that their outer surfaces flexibly fit the outer edges of the two door bodies 1 and 2. The flexible expansion achieves a tight fit, compensating for the millimeter-level errors that occur in the door bodies during long-term operation or installation, so that the sealing interface is not affected by slight dimensional deviations, and ensuring the airtightness of the door opening.

[0064] Specifically, the second sealing component includes an intermediate sealing airbag 3 and a wedge 16. The intermediate sealing airbag 3 is located on the opposite side edge of the left door 2 or the right door 1, while the wedge 16 is generally located at the corresponding position of the other door, so that it can form a cooperative structure with the intermediate sealing airbag 3.

[0065] Specifically, when the two doors are closed, the intermediate sealing airbag 3 inflates and fills the gap between the two doors 1 and 2, forming a centrally sealed interface. Meanwhile, the wedge block 16, through its wedge-shaped structure, embeds itself between the intermediate sealing airbags, preventing over-inflation and effectively blocking the sound leakage path between the two doors. This dual-sealing system overcomes the limitations of traditional rigid rubber strip sealing methods, not only automatically compensating for dimensional errors but also absorbing vibrations and attenuating solid-borne sound transmission, significantly improving sound insulation performance.

[0066] Specifically, in order to ensure the safety and ease of use of the drive components, a cover plate assembly is installed at the bottom of the door opening, wherein the cover plate 14 is installed in the channel at the bottom of the door body and is raised and lowered by an electric push rod 13.

[0067] Specifically, one end of the electric push rod 13 is fixed in the pit structure at the bottom of the channel, and the other end is connected to the bottom of the cover plate 14. The cover plate 14 can be moved up and down by the extension and retraction of the electric push rod 13.

[0068] Specifically, when the door is open, the cover plate 14 is pushed to the lowered position by the electric push rod 13, making the upper surface of the cover plate 14 flush with the ground, forming a continuous passage plane. This prevents personnel or equipment from being affected by structural protrusions when passing through the doorway, improving safety and convenience. When the door is about to close, the electric push rod 13 drives the cover plate 14 to the avoidance position, ensuring that the cover plate 14 does not interfere with the door structure and that the door can close smoothly along the bottom guide rail 12.

[0069] Specifically, one end of the cover plate 14 is fixed to the bottom ground structure through a rotary bearing 18, so that the cover plate 14 can rotate stably along the rotation center of the rotary bearing 18 during the movement, avoiding skew and jamming, thereby maintaining the stability and reliability of the lifting action.

[0070] Specifically, after the door is closed, the cover plate 14 can also protect the drive components below from external dust, debris or mechanical impact, extend the overall life of the drive system and make system maintenance easier.

[0071] Specifically, the working process of the high sound insulation electric door system provided in this application is as follows:

[0072] The opening process of the high sound insulation electric door is as follows: Before the high sound insulation electric door is ready to be opened, the system first confirms whether the door is completely closed and sealed. At this time, the middle sealing airbag 3 and the sealing airbags 4 around the door opening are inflated, so that the entire outer contour of the door and the surrounding area of ​​the door opening are in a completely sealed interface. This stage is not the direct action of the opening procedure, but its release process is the first step of the opening action chain, because the middle sealing airbag 3 and the sealing airbags 4 around the door opening are tightly pressed against the periphery of the door when inflated, making it unable to slide.

[0073] Therefore, at the start of opening, the control system first sends a deflation command to the airbag supply unit, causing the middle sealing airbag 3 to gradually contract and the sealing airbags 4 around the door opening to gradually shrink, so that the left door 2 and the right door 1 are no longer subjected to the inward pressing pressure from the sealing airbags, thereby restoring the door to a state where it can slide freely.

[0074] This deflation process is a necessary condition for the door to start its translational movement. Because the airbag seal is a soft-fitting sealing structure, it will form a stable pressure locking interface when it is inflated. When the airbag is not released, the door will be unable to overcome this surface pressure and move no matter how much translational driving force it is subjected to.

[0075] With the airbag fully deflated, the door becomes movable. At this point, the drive assembly begins operation. Motor 9 receives stable support from the mounting base 17 fixed to the bottom side wall of the doorway, allowing the counter-torque generated during motor startup to be absorbed by the doorway structure, thus ensuring the output power is transmitted smoothly to gear 8 to the maximum extent. After motor 9 starts, its output shaft rotates, driving gear 8, fixed at its output end, to rotate continuously. Gear 8 accurately meshes with the teeth of rack 7 at the bottom of the left door 2 and right door 1, causing the teeth of gear 8 to push rack 7 tooth by tooth during rotation, resulting in linear movement of rack 7 along the guide rail. Since rack 7 is fixed to the bottom side of the door, pushing rack 7 effectively pushes the door itself to move.

[0076] At this point, the gate officially enters the opening stage. Under the meshing action of rack 7 and gear 8, the right gate 1 and the left gate 2 move outward along the two sides of the bottom guide rail 12 respectively. The movement of the gate is mainly supported by the traveling wheels 11. The traveling wheels 11 roll smoothly in the bottom guide rail 12. Under the height restriction of the bottom guide rail 12, the weight of the gate is fully supported and will not sink or derail. At the same time, the bottom guide wheels 10, as lateral constraint elements, form a clamping limit on both sides of the side wall of the guide rail. Through the contact between the bottom guide wheels 10 and the side wall of the bottom guide rail 12, the gate will not shift to the side due to uneven power, inertial force or slight external interference, ensuring that the gate maintains a strictly linear motion trajectory in the opening direction.

[0077] Meanwhile, the top guide wheel 5 forms an upper stable limit through the constraint of the top guide rail 6, so that the posture of the door in the vertical direction is doubly restricted on both the upper and lower sides, ensuring that the door will not tilt forward, backward, or swing left and right at the top. Since the top guide rail 6 is fixed in the upper structure of the reverberation chamber through the top guide rail fixing device 15, the constraint force on the top guide wheel 5 has extremely high stability and anti-deformation ability. The entire door forms a stable limiting structure under the combined action of the top and bottom guide systems, thus allowing only linear displacement of the door parallel to the guide rail direction, so that the door will not deviate in posture whether it is running at high speed or long stroke.

[0078] As motor 9 continues to rotate, gear 8 continuously pushes rack 7, thereby further pushing the two doors to gradually slide in the opening direction until the doors are fully open. At this point, the doorway area presents its maximum passage width, and the entire opening process is complete. This opening link is particularly critical in large reverberation chambers because the entry and exit of equipment usually requires a large passageway. During this stage, the doors must not only operate smoothly but also ensure that they do not generate mechanical collisions, cause noise pollution, or deviate from their trajectory, so as not to affect the acoustic conditions of the reverberation chamber. Therefore, this technical solution achieves this high-precision operation through multiple guidance and multi-point drive constraints.

[0079] At this time, the cover plate 14 begins to descend. Since the cover plate 14 was originally in the passage protection state, that is, the cover plate 14 was in the rising avoidance position when the door was closed, it was retracted upward by the control of the electric push rod 13 to avoid interference with the door. Therefore, after the door is opened, the electric push rod 13 will receive the descending command and extend its telescopic rod outward by the fixed installation method installed at one end, so that the cover plate 14 descends along the preset rotation path through the rotary bearing 18 between the fixed structure on the ground, so that the upper surface of the cover plate 14 is finally flush with the floor of the reverberation chamber, forming a continuous and flat passage.

[0080] The closing process of the high sound insulation electric door system is as follows: First, before the door closes, it must be ensured that the cover plate 14 does not obstruct the door's operation. Therefore, the electric push rod 13 first receives the control command to extend and retract, causing the cover plate 14 to rise from the initial lowering position to the avoidance position. This rising action is achieved through the linear extension and retraction of the electric push rod 13, and with the rotary bearing 18 as the fulcrum, the cover plate 14 can flip along the position of the fixed rotary bearing 18 to enter the rising avoidance state. This state ensures that the bottom guide rail 12 below the door position is completely exposed, allowing the traveling wheels 11 to smoothly enter the guide rail groove, thereby preventing the door from mechanical interference from the cover plate structure.

[0081] As the cover plate 14 is fully raised, the motor 9 begins to run in reverse, and its output shaft drives the gear 8 to rotate in the opposite direction. The gear 8 acts on the rack 7, causing the rack 7 to move the left door 2 and the right door 1 along the bottom guide rail 12 towards the center. At this time, the traveling wheel 11 once again bears the main weight support. The bottom guide wheel 10 achieves continuous lateral limit by contacting the side wall of the bottom guide rail 12. The top guide wheel 5 and the top guide rail 6 maintain upper posture control, so that the door does not shake, deviate, or get stuck during the sliding towards the center, ensuring that the door can accurately reach the final closed position.

[0082] As the doors gradually move towards the center, the distance between the right door 1 and the left door 2 continuously decreases until the two doors are completely fitted together in the middle. At this point, the closing action of the doors is complete, but the doors have only achieved mechanical closure and have not yet entered the soundproof locking state. To achieve high sound insulation performance, this system also needs to perform a sealing action. First, the intermediate sealing airbag 3 begins to inflate. Air pressure is supplied to the inside of the airbag through the inflation source, causing the intermediate sealing airbag 3 to gradually expand and fit outwards to the joint surface between the two doors. Due to the flexible expansion characteristics of the intermediate sealing airbag 3, it can automatically compensate for the small gaps between the two doors, so that the central gap between the two doors is completely filled, forming a seamless sealing interface. At the same time, the wedge 16, through its inherent wedge-shaped structure, is embedded between the intermediate sealing airbags 3 to prevent them from over-expanding, thereby enabling the central gap to achieve the high sound insulation level required by the reverberation chamber.

[0083] After the central gap is sealed, the sealing airbags 4 around the door opening begin to expand. They are installed around the door opening and can apply uniform pressure to the outer edges of the left door 2 and the right door 1 respectively, so that the edges of the door body are all formed into a flexible seal. This airbag seal can automatically compensate for the slight dimensional changes between the door body and the door opening caused by time, temperature and stress, thereby forming a stable sealing ring around the door.

[0084] As the surrounding air-sealed airbags 4 fully expand, the boundary of the entire door body forms a highly continuous, closed, and seamless sound insulation structure, enabling the high sound insulation electric door system to withstand the high sound intensity and pressure generated inside the reverberation chamber without sound leakage or damage to the sound field characteristics due to structural gaps.

[0085] The above description is merely a preferred embodiment of this application and is not intended to limit this application in any way. Although this application has disclosed the preferred embodiment as above, it is not intended to limit this application. Any person skilled in the art can make some modifications or alterations to the above-mentioned technical content to create equivalent embodiments without departing from the scope of the technical solution of this application. The implementation schemes in the above embodiments can be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this application without departing from the content of the technical solution of this application shall still fall within the scope of this application.

Claims

1. A high-sound-insulation electric door system for large reverberation chambers, characterized in that, The high sound insulation electric door system is installed at the doorway of the reverberation chamber to achieve sound insulation, anti-overturning and passage functions in the high sound intensity test; The high sound insulation electric door system includes: A door assembly comprising two door panels that can move toward each other, each door panel being able to move along a bottom guide assembly on the ground and a top guide assembly on the top; The drive assembly, connected to each door, is used to drive the door to open and close along the bottom guide rail; A sealing assembly includes a first sealing member and a second sealing member, wherein the first sealing member is disposed around the door opening and the second sealing member is disposed on the edge of each door body away from the door opening, so that when the door body is closed, it is inflated to fit against the door body and fill the gap between the door bodies. The cover plate assembly is located on one side of the bottom of the doorway and is used to descend to form a passage surface with the ground when the door is opened, and rise to a clearance position before the door is closed. A top guide assembly includes a guide wheel disposed at the top of the door and a top guide rail fixed to the wall of the reverberation chamber. The guide wheel rolls within the top guide rail to ensure stable opening and closing of the door. The bottom guide assembly includes a bottom guide rail disposed on the door body and bottom guide wheels disposed on both sides of the bottom guide rail. The bottom guide wheels and the bottom guide rail form a double-sided limiting cooperation to ensure that the door body runs smoothly during opening and closing.

2. A high-sound-insulation electric door system for a large reverberation chamber according to claim 1, characterized in that, Each gate body includes a gate frame and a filling material layer disposed inside the gate frame; the filling material layer is concrete or sound-absorbing damping material to provide sound insulation and load-bearing performance.

3. A high-sound-insulation electric door system for a large reverberation chamber according to claim 1, characterized in that, The drive components are all fixedly installed at both ends of the bottom of the doorway. The drive components include a rack, a gear, and a motor. The rack is fixedly connected to the corresponding door body through a rack support fixedly installed on one side of the bottom of each door body. The gear is located at the bottom of the rack and meshes with the rack. The motor is fixedly installed on one side of the bottom of the door through a mounting bracket.

4. A high-sound-insulation electric door system for a large reverberation chamber according to claim 1, characterized in that, The first sealing component is a door opening perimeter sealing airbag arranged around the door opening, and the door opening perimeter sealing airbag is fixedly installed on the wall of the reverberation chamber; the second sealing component includes an intermediate sealing airbag and a wedge, and the intermediate sealing airbag and the wedge are respectively arranged on the side edge of different door bodies.

5. A high-sound-insulation electric door system for a large reverberation chamber according to claim 1, characterized in that, A channel is provided on the bottom front side of the door assembly, the cover plate assembly is disposed in the channel and the drive assembly is disposed below the cover plate assembly; the cover plate assembly includes a cover plate and an electric push rod connected to the cover plate.

6. A high-sound-insulation electric door system for a large reverberation chamber according to claim 5, characterized in that, One end of the electric push rod is fixed in the pit structure inside the passage, and the other end is connected to the bottom of the cover plate; one end of the cover plate is fixedly connected to the bottom surface through a rotary bearing, so that the cover plate moves down when the door is opened so that its upper surface is flush with the ground, and moves up to avoid the door before the door is closed.

7. A high-sound-insulation electric door system for a large reverberation chamber according to claim 1, characterized in that, The top guide assembly includes a top guide rail fixing device, a top guide rail, and a top guide wheel; the top guide rail fixing device is fixedly installed on the surface of the top wall of the reverberation chamber, and the top guide rail is fixedly installed at the bottom of the top guide rail fixing device.

8. A high-sound-insulation electric door system for a large reverberation chamber according to claim 7, characterized in that, Each of the gate bodies is fixedly equipped with top guide wheels at both ends of the top, and the top guide wheels can roll within the top guide rail.

9. A high-sound-insulation electric door system for a large reverberation chamber according to claim 1, characterized in that, The bottom guide assembly includes a traveling wheel, a bottom guide rail, and a bottom guide wheel; each of the bottom ends of the gate body is provided with a traveling wheel; the bottom guide rail is fixed to the ground by anchor bolts, and the traveling wheel can roll on the bottom guide rail.

10. A high-sound-insulation electric door system for a large reverberation chamber according to claim 9, characterized in that, Each of the walking wheels is provided with a bottom guide wheel on both sides, and the bottom guide wheel contacts the side of the bottom guide rail to limit the lateral displacement of the door.

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