A combined flexible sound-absorbing and sound-isolating barrier

Abstract

The present invention relates to the technical field of sound-absorbing and sound-isolating barriers, and discloses a combined flexible sound-absorbing and sound-isolating barrier, comprising a mounting base, a plurality of sound barriers being arranged on the top of the mounting base, an aluminum plate being arranged on the outer surface of the sound barriers as a protective layer thereof, the aluminum plate being fixedly connected to a second mounting frame and a first mounting frame; a splicing assembly for connecting the aluminum plates of adjacent sound insulation screens to ensure a stable connection and sealing between the sound insulation barrier units; a supporting assembly for supporting the aluminum plates to ensure the stability and wind resistance of the sound insulation barriers, the supporting assembly comprising a mounting plate fixedly connected to the outside of the two. The barrier support angle can be flexibly adjusted by swinging the angle of one end of the supporting rod, thereby optimizing the sound wave reflection and absorption path, changing the sound wave incident angle, causing the sound wave reflection direction to deviate from the sensitive area, and extending the sound wave propagation path within the barrier material, thereby improving the sound absorption and sound-isolating effect.

Description

Technical Field

[0001] The present invention relates to the technical field of sound absorbing and isolating barriers, in particular to a combined flexible sound absorbing and isolating barrier. Background Art

[0002] With rapid economic development and the continuous advancement of urbanization, noise pollution has become an unresolved environmental issue in today's society. In areas such as major transportation routes, industrial areas, and construction sites, noise not only seriously impacts the quality of life of surrounding residents but can also cause damage to people's physical and mental health, such as sleep disorders, hearing loss, and cardiovascular disease. Therefore, effective noise control and isolation are particularly important. Sound-absorbing and sound-isolating barriers, as a common noise control device, are widely used in various places where noise reduction is required. Their primary function is to reduce noise by blocking the propagation of sound waves and reflecting and absorbing sound wave energy.

[0003] However, the existing sound-absorbing and isolating barriers have some limitations. First, the supporting structure of most sound-absorbing and isolating barriers is fixed and cannot be flexibly adjusted according to different sound source positions, directions and environmental conditions, resulting in the inability to optimize the sound wave reflection and absorption paths, and the sound wave incident angle cannot be effectively changed, so that some sound waves may be directly reflected to sensitive areas, or it is difficult to achieve accurate isolation of specific sound sources; in addition, the fixed support angle may be insufficient in wind resistance and structural safety when facing wind loads or other external forces, and structural stress is easily concentrated, affecting the service life and reliability of the barrier; secondly, the existing sound-absorbing and isolating barriers are often complicated to operate when splicing multiple units, requiring the use of complex tools and a large amount of manpower, resulting in low installation efficiency, long construction period and high labor costs.

[0004] To this end, a combined flexible sound-absorbing and sound-isolating barrier is proposed to solve the above problems. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the present invention provides a combined flexible sound-absorbing and sound-isolating barrier, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a combined flexible sound-absorbing and sound-insulating barrier, comprising:

[0007] A mounting base, wherein a plurality of sound insulation barriers are provided on the top of the mounting base, and an aluminum plate is provided on the outer surface of the sound insulation barrier as a protective layer thereof, and the aluminum plate is fixedly connected to the mounting frame 2 and the mounting frame 1;

[0008] Splicing components are used to connect the aluminum plate protective layers of adjacent noise barriers to ensure a stable connection and sealing between noise barrier units;

[0009] A support assembly is used to support the aluminum plate protective layer of the sound insulation barrier to ensure the stability and wind resistance of the sound insulation barrier. The support assembly includes a mounting plate fixedly connected to the outside of the two, and a plurality of mounting holes are equidistantly provided on the inner side of the mounting plate. A movable seat is slidably connected to the inside of the mounting plate, and a driving screw 2 is threadedly connected to the through hole on the outer side of the movable seat. A moving rod 2 is fixedly connected to the outer side of the driving screw 2. Two moving rods 1 are slidably connected to the inner side of the movable seat, and the two moving rods 1 are connected by a reset spring. The outer side of the movable seat is rotatably connected to a support plate, and the bottom end of the support plate is hinged to the support seat.

[0010] Preferably, the splicing assembly includes a driving screw rod 1 rotatably mounted inside the mounting frame 2, the external thread of the driving screw rod 1 is connected to a plurality of movable plates, the outer sides of the movable plates are rotatably connected to two connecting rods, the inner side of the mounting frame 2 is provided with a plurality of through holes, the inner sides of the through holes are slidably connected to plug rods, and the inner side of the mounting frame 1 is provided with a plurality of slots.

[0011] Preferably, one end of the moving rod is configured to be conical, and a plurality of ground anchors are provided on the outer surface of the support seat.

[0012] Preferably, one end of each of the connecting rods away from the movable plate is movably connected to one end of the insertion rod at the corresponding position.

[0013] Preferably, the top of the second mounting bracket is rotatably connected to a rotating knob, and the top of the first driving screw is fixedly connected to the outer side of the rotating knob.

[0014] Preferably, one end of the moving rod 1 away from the return spring is plugged into the inner side of the mounting hole, and one end of the moving rod 2 is provided with an inclined surface.

[0015] Preferably, a limiting groove is provided on the inner side of the mounting base, a plurality of pulleys are slidably connected inside the limiting groove, and the bottoms of the mounting frame 1 and the mounting frame 2 are rotatably connected to the tops of the pulleys.

[0016] Preferably, the longitudinal section of the insertion rod is set to be square, and one end of the insertion rod is plugged into and fitted with the inner side of the slot.

[0017] Preferably, the outer surface of the sound barrier is provided with folds.

[0018] Preferably, a guide rod is slidably connected to the inner through hole of the movable plate, and the upper and lower ends of the guide rod are fixedly connected to the inner wall of the second mounting frame.

[0019] The present invention provides a combined flexible sound-absorbing and sound-insulating barrier, which has the following beneficial effects:

[0020] 1. The present invention flexibly adjusts the support angle of the sound barrier by swinging the angle of one end of the support rod, thereby optimizing the sound wave reflection and absorption path, changing the sound wave incident angle, making the sound wave reflection direction deviate from the sensitive area, and extending the sound wave propagation path in the barrier material, thereby improving the sound absorption and insulation effect, flexibly responding to changes in the position and direction of different sound sources, always aiming at the main sound source, and achieving precise partitioning; adjusting the support angle can also reduce the impact of wind load, improve wind resistance stability, disperse structural stress, and enhance the stability and safety of the overall structure.

[0021] 2. The present invention can quickly connect multiple sound insulation barriers. The operation is simple and quick, and does not require complex tools and a large amount of manpower. It significantly improves installation efficiency, shortens the construction period, and reduces labor costs. At the same time, the rapid splicing method allows the overall length and coverage of the barrier to be flexibly adjusted according to actual site requirements.

[0022] 3. The present invention uses a retractable pleated design to make the length and shape of the sound barrier flexible and variable, easily adapting to different installation spaces. At the same time, the pleated structure of the sound barrier forms multiple air layers and reflective surfaces when it is retracted and expanded, and the sound waves are reflected and refracted multiple times, extending the path, thereby greatly improving the sound absorption effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A perspective view of the present invention;

[0024] Figure 2 Schematic diagram of the sound insulation barrier structure of the present invention;

[0025] Figure 3 This is a structural schematic diagram of the second mounting frame of the present invention;

[0026] Figure 4 is a cross-sectional view of a mounting frame of the present invention;

[0027] Figure 5 This is a schematic diagram of the mounting base structure of the present invention;

[0028] Figure 6 For the present invention Figure 4 Enlarged view of point A in the middle;

[0029] Figure 7 For the present invention Figure 2 Enlarged view of point B in the middle;

[0030] Figure 8 It is a schematic structural diagram of the movable seat of the present invention.

[0031] Figure 9 It is a schematic diagram of the sound insulation barrier structure of the present invention.

[0032] Among them, 1. Mounting base; 2. Sound insulation barrier; 3. Turning knob; 401. Drive screw 1; 402. Insert rod; 403. Move plate; 404. Slot; 405. Connecting rod; 501. Support plate; 502. Support seat; 503. Mounting plate; 504. Mounting hole; 505. Movable seat; 506. Drive screw 2; 507. Move rod 1; 508. Return spring; 509. Move rod 2; 6. Mounting frame 1; 7. Mounting frame 2; 8. Limiting slot; 9. Pulley. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the present specification. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] Please see the attached Figure 1 -Attached Figure 9 The first embodiment of the present invention provides a combined flexible sound-absorbing and sound-insulating barrier, comprising:

[0035] A mounting base 1 is provided, with multiple sound barriers 2 mounted on top. The outer surfaces of the sound barriers 2 are protected by aluminum plates, which are fixedly connected to mounting brackets 2 (7) and 1 (6). The sound barriers 2 are composed of a flexible sound-absorbing and insulating layer and a rigid aluminum plate protective layer. The aluminum plate protective layer is secured to the outer surface of the sound barrier 2 via a removable connection (e.g., screws). If the width of the sound barrier 2 needs to be adjusted to accommodate a different installation space, the existing aluminum plate protective layer can be removed using a simple removal tool and replaced with a new aluminum plate matching the size of the adjusted sound barrier 2. The shape and size of the new aluminum plate are compatible with the adjusted sound barrier 2, ensuring that it effectively protects the flexible sound-absorbing and insulating material within. This ensures the adaptability of the sound barrier 2 to different installation spaces, significantly improving its ease of maintenance and replacement, and ensuring the overall structural stability and functionality of the sound barrier 2.

[0036] The splicing assembly is used to connect the aluminum plate protective layers of adjacent sound barriers 2 to ensure a stable connection and sealing between the units of the sound barrier 2; the splicing assembly includes a driving screw 401 rotatably mounted inside the mounting frame 2 7, the external thread of the driving screw 401 is connected to multiple movable plates 403, the outer side of the movable plate 403 is rotatably connected to two connecting rods 405, the inner side of the mounting frame 2 7 is provided with multiple through holes, the inner side of the through holes is slidably connected to the insertion rod 402, and the inner side of the mounting frame 6 is provided with multiple slots 404; the ends of the multiple connecting rods 405 away from the movable plate 403 are respectively movably connected to one end of the insertion rod 402 at the corresponding position; the top of the mounting frame 2 7 is rotatably connected to the rotating knob 3, the top of the driving screw 401 is fixedly connected to the outer side of the rotating knob 3, and the rotating knob 3 can easily drive the driving screw 401 to rotate; the longitudinal section of the insertion rod 402 is set to be square, and one end of the insertion rod 402 is plugged into the inner side of the slot 404. Mounting Frame 2 (7) is symmetrically equipped with identical assembly components on both sides, each comprising a drive screw 1 (401), a movable plate 403, a connecting rod 405, and an insertion rod 402. Each side of Mounting Frame 2 (7) plugs into the adjacent Mounting Frame 1 (6). The left side of Mounting Frame 2 (7) plugs into slots 404 of Mounting Frame 1 (6) on one side via insertion rods 402, while the right side plugs into slots 404 of Mounting Frame 1 (6) on the other side via another set of insertion rods 402. Rotating Knob 3 synchronously rotates the drive screws 1 (401) on both sides, allowing the insertion rods 402 on both sides to simultaneously insert into their corresponding slots 404, achieving a secure connection between the three.

[0037] Specifically, when the driving screw 401 rotates, the movable plate 403 moves along the axial direction of the driving screw 401, and a guide rod is slidably connected to the inner through hole of the movable plate 403, and the upper and lower ends of the guide rod are fixedly connected to the inner wall of the mounting frame 7; the guide rod provides guidance and support for the movable plate 403, ensuring that the movable plate 403 can move smoothly in a straight line under the drive of the driving screw 401, preventing the movable plate 403 from tilting or offsetting during the movement.

[0038] The connecting rod 405 drives the insertion rod 402 to move, thereby realizing the plug-in fit between the insertion rod 402 and the slot 404. The insertion rod 402 realizes the tight connection of adjacent sound insulation barriers 2 and plays the role of fixing and positioning.

[0039] A support assembly is used to support the aluminum plate protective layer of the sound insulation barrier 2 to ensure the stability and wind resistance of the sound insulation barrier 2. The support assembly is arranged on the outside of the mounting frame 1 6 and the mounting frame 2 7. The support assembly includes a mounting plate 503 fixedly connected to the outside of the two. A plurality of mounting holes 504 are equidistantly provided on the inner side of the mounting plate 503. A movable seat 505 is slidably connected inside the mounting plate 503. A driving screw 2 506 is threadedly connected to the outer through hole of the movable seat 505. A moving rod 2 509 is fixedly connected to the outer side of the driving screw 2 506. Two moving rods 1 507 are slidably connected to the inner side of the movable seat 505. The two moving rods 1 507 are connected by a reset spring 508. The outer side of the movable seat 505 is rotatably connected to the support plate 501, and the bottom end of the support plate 501 is hinged to the support seat 502.

[0040] The support plate 501 is connected to the movable seat 505 , and the movable seat 505 is installed in the mounting hole 504 of the mounting plate 503 .

[0041] The outer surface of the support base 502 is provided with a plurality of ground anchors, and the support base 502 is fixed to the ground through the ground anchors.

[0042] One end of the moving rod 1 507 is set to be conical, and the end of the moving rod 1 507 away from the return spring 508 is plugged into the inner side of the mounting hole 504, and one end of the moving rod 2 509 is set with an inclined surface.

[0043] Specifically, when the driving screw 2 506 is rotated, the moving rod 2 509 moves along the thread direction, pushing the moving rod 1 507 to expand outward. One end of the moving rod 2 509 is provided with an inclined surface. When the moving rod 2 509 moves, the inclined surface contacts the conical surface of the moving rod 1 507, forcing the moving rod 1 507 to move outward.

[0044] The reset spring 508 is used to provide elastic force to reset the two moving rods 507, thereby facilitating the subsequent movement of the movable seat 505.

[0045] When the driving screw rod 2 506 continues to advance, the inclined surface of the moving rod 2 509 pushes the tapered end of the moving rod 1 507, forcing the moving rod 1 507 to overcome the elastic force of the return spring 508 and extend outward until it is inserted into the mounting hole 504; when the driving screw rod 2 506 is rotated back in the opposite direction, the return spring 508 releases the elastic force, and the two moving rods 1 507 are pulled back inward synchronously to achieve unlocking and resetting.

[0046] The end of the moving rod 507 away from the return spring 508 is plugged into the inner side of the mounting hole 504, which realizes the quick locking and unlocking function of the movable seat 505. When the position of the movable seat 505 needs to be adjusted, the moving rod 1 507 is automatically retracted under the elastic action of the return spring 508, and the movable seat 505 can slide smoothly; and when the movable seat 505 moves to the appropriate position, the moving rod 1 507 is quickly unfolded and inserted into the mounting hole 504 by driving the screw rod 2 506 and the moving rod 2 509, thereby completing the locking of the movable seat 505. The operation is convenient and efficient.

[0047] Through the synergistic effect of the above-mentioned structures, the supporting assembly can flexibly adjust the supporting angle of the sound barrier 2, optimize the sound wave reflection and absorption path, and improve the acoustic performance and stability of the sound barrier 2.

[0048] Specifically, the multiple ground anchors arranged on the outer surface of the support seat 502 are used to firmly fix it on the ground. After the ground anchors penetrate deep into the ground, they can resist various external loads, such as wind loads, sound wave impact forces, and the torque generated by the barrier's own weight, etc., to prevent the support seat 502 from being displaced, tilted or overturned, thereby providing a stable and reliable support foundation for the sound insulation barrier 2.

[0049] The ground anchor can transfer the wind load to the underground through the support base 502, and use the anchoring force of the soil to resist the wind force, thereby reducing the risk of wind damage to the barrier and ensuring the safety of the barrier under severe weather conditions such as strong winds.

[0050] Sound barrier 2 is made of a flexible sound-insulating material. Its outer surface is pleated with folds, 5 to 10 mm deep and 10 to 15 mm apart. These folds create a wave-like pattern, increasing the barrier's surface area and the reflection paths for sound waves. The pleated design gives sound barrier 2 a wavy appearance, increasing the surface area and the sense of layering. The pleated structure also increases the reflection and refraction paths for sound waves on the barrier's surface. When sound waves strike the barrier's surface, they are reflected and refracted multiple times on the pleated reflective surfaces, extending the sound wave's propagation path within the barrier. This increases the opportunity for the sound waves to be absorbed and converted into heat energy by the porous sound-absorbing material within the barrier, thereby enhancing sound absorption. The flexible sound-absorbing and insulating material is made of EPDM rubber sheets, which have good elasticity and weather resistance. It can maintain stable sound-absorbing and insulating performance under different environmental conditions and effectively absorb and isolate noise. A layer of aluminum plate is added to the outside of the sound insulation material. The aluminum plate is used as an external protective layer to effectively prevent the internal EPDM rubber sheet and other flexible sound-absorbing and insulating materials from being eroded by the external environment, such as ultraviolet rays, acid rain, air pollution, etc., which can slow down the aging speed of the internal materials and extend their service life. The flexible sound-absorbing and insulating material is an EPDM rubber sheet with a thickness of 1.5-2mm and a density of 0.65-0.85g / cm³, and is covered with a 0.5mm aluminum plate on the outside.

[0051] A limiting groove 8 is provided on the inner side of the mounting base 1 , and a plurality of pulleys 9 are slidably connected inside the limiting groove 8 . The bottoms of the mounting frame 1 6 and the mounting frame 2 7 are rotatably connected to the tops of the pulleys 9 .

[0052] Secure the mounting base 1 to the ground to ensure the stability of the entire device. Then, install the pulley 9 into the retaining groove 8 on the inside of the base to provide support and guidance for the splicing and movement of the noise barrier 2. Secure the support base 502 to the ground using ground anchors. The support base 502 is connected to the movable base 505 via the support plate 501, providing stable support for the noise barrier 2.

[0053] Specifically, when repositioning or moving the sound barrier 2 unit, covered by the aluminum sheet protective layer, pulley 9 rolls within retaining groove 8 defined within mounting base 1. This rolling motion smoothly drives mounting brackets 1 6 and 2 7, which are rotatably connected to the top of pulley 9, along with the aluminum sheet protective layer and the sound insulation material beneath it. The design of pulley 9 ensures smooth movement, significantly reducing friction and operational difficulty. Furthermore, the structure of retaining groove 8 provides the necessary support and guidance for pulley 9, ensuring the stability and precise alignment of the sound barrier 2 unit during movement.

[0054] When it is necessary to quickly splice two sound barrier 2 units covered with a protective layer of aluminum plate, first align the mounting frame 2 7 of one of the units and insert it into the preset groove inside the mounting frame 1 6 of the other unit. Then, by turning the rotating knob 3, the driving screw 1 401 fixedly connected thereto is driven to rotate, thereby causing the movable plate 403 connected to the external thread of the driving screw 1 401 to move axially. The movement of the movable plate 403 will drive the connecting rod 405 rotatably connected thereto to swing, and the other end of the connecting rod 405 is connected to the insertion rod 402, thereby guiding the insertion rod 402 to slide in the through hole of the mounting frame 2 7 and smoothly insert it into the corresponding slot 404 on the inner side of the mounting frame 1 6, thereby achieving a stable splicing of the two sound barrier 2 units. The entire process does not require reliance on complex tools or a large amount of manpower. It is simple and quick to operate, significantly improving installation efficiency, shortening the construction period, and reducing labor costs. In addition, the square design of the insertion rod 402 ensures a tight fit with the slot 404, effectively preventing the insertion rod from rotating in the slot, and further ensuring stability after splicing.

[0055] In areas with strong winds or typhoons / storms, in order to reduce the impact of wind loads on the sound barrier, prevent the structure from tipping over or displacing, and disperse the concentrated stress of wind pressure on the support points to improve wind resistance, it is necessary to adjust its posture by increasing the support angle (reducing the projected area of ​​the windward surface of the sound barrier) or making the sound barrier form a certain angle with the wind direction; the specific operation is as follows: first, move the movable seat 505 so that it slides along the inner wall of the mounting plate 503, thereby changing the inclination angle of the sound barrier 2. After the movable seat 505 moves to the appropriate position, rotate the drive screw 2 506, and the drive screw 2 506 drives the movable rod 2 509 to move. One end of the movable rod 2 509 is provided with an inclined surface. During the movement process, the inclined surface contacts the conical surface at one end of the two movable rods 1 507, forcing the two movable rods 1 507 to move away from each other until one end thereof is firmly inserted into the interior of the mounting hole 504, thereby fixing the movable seat 505 in the current position and completing the adjustment of the support angle of the sound barrier 2.

[0056] The outer surface of sound barrier 2 is pleated, and the pleated structure is made of a flexible sound-absorbing and insulating material. When the length and shape of the barrier need to be changed to accommodate different installation spaces, the barrier 2 can be expanded or contracted by moving mounting brackets 1 (6) and 2 (7). During this expansion and contraction process, the material in the pleated sections forms different air layers and reflective surfaces. Sound waves are reflected and refracted multiple times between these air layers and reflective surfaces, extending the sound wave propagation path within the barrier and enhancing the sound absorption and insulation effect.

[0057] When sound waves are incident on the sound barrier 2, they first come into contact with the surface of the sound barrier 2. Due to the inclination angle and pleated structure of the sound barrier 2, the sound waves are reflected and refracted on the surface of the barrier. Part of the sound waves are reflected to the non-sensitive area, while the other part of the sound waves enter the interior of the sound barrier 2. The sound waves entering the interior of the sound barrier 2 are absorbed and blocked by the porous sound-absorbing material and the sound-insulating material. The sound-absorbing material converts the sound wave energy into heat energy, while the sound-insulating material prevents the sound waves from penetrating the sound barrier 2, thereby achieving effective control of the sound waves and reducing noise propagation.

[0058] Under the action of wind load or other external forces, the impact force of wind on the sound barrier 2 can be reduced by adjusting the support angle; the cooperation between the support seat 502 and the ground anchor enhances the wind resistance stability of the sound barrier 2, prevents the sound barrier 2 from tipping over or displacing under the action of wind, and reasonably disperses the structural stress of the sound barrier 2, avoiding local stress concentration, thereby improving the stability and safety of the entire device.

[0059] The "support angle" used in this application refers to the angle θ between the plane of the aluminum plate protective layer of the sound barrier 2 and the vertical plane. When θ = 0°, the barrier is vertical. When θ > 0°, the top of the barrier tilts toward or away from the sound source. By varying θ, the sound wave reflection path and wind resistance are optimized. In Example 1, the support angle θ = 0°, at which point the sound barrier 2 remains vertical.

[0060] Example 2: Compared with Example 1, the difference is that the support angle of Example 1 is 0 degrees, and the support angle of Example 2 is 30 degrees. 。 , that is, the top of the noise barrier 2 is tilted 30 degrees toward the sound source side 。 .

[0061] Example 3: Compared with Example 1, the difference is that the support angle of Example 1 is 0 degrees, and the support angle of Example 3 is 45 degrees, that is, the top of the sound barrier 2 is inclined 45 degrees toward the sound source side.

[0062] Comparative Example 1: Current non-metallic barrier.

[0063] Comparative Example 2: Compared with Example 1, the difference is that the flexible sound-absorbing and insulating material has no wrinkle structure.

[0064] In accordance with GB / T20247-2006, the sound absorption coefficient of Examples 1-3 of the present invention was tested in a professional acoustic laboratory at a test frequency of 500 Hz. The wind pressure resistance performance test was conducted in accordance with GB / T15227-2019, and the residual deformation and maximum elastic deflection under positive pressure P = 8000 Pa and negative pressure P = -8000 Pa were tested. The test results are shown in Table 1.

[0065] Table 1 Sound absorption coefficient and wind pressure resistance test results

[0066] serial number Sound absorption coefficient test Residual deformation / mm Maximum elastic deflection / mm Example 1 0.82 1.04 15.5 Example 2 0.85 0.92 13.9 Example 3 0.87 0.81 12.5

[0067] According to GB / T20247-2006 standard, the sound absorption coefficient of Example 1, Comparative Example 1 and Comparative Example 2 of the present invention was tested in a professional acoustic laboratory. The test frequency range was 100 Hz to 4000 Hz. The specific data are shown in Table 2 below.

[0068] Table 2 Test results of sound absorption coefficient frequency characteristics

[0069] Frequency (Hz) Example 1 Comparative Example 1 Comparative Example 2 100 0.38 0.32 0.36 500 0.82 0.75 0.79 1000 0.85 0.77 0.82 2000 0.90 0.68 0.88 4000 0.78 0.62 0.75

[0070] In summary, the experimental examples and comparative analysis above demonstrate that the modular flexible sound-absorbing barrier of the present invention offers significant advantages in terms of sound absorption and isolation. Adjusting the support angle effectively optimizes the sound wave reflection and absorption paths, and the pleated structure significantly improves the sound absorption coefficient. Compared with traditional fixed barriers, the barrier of the present invention demonstrates superior noise attenuation and can better meet noise control requirements.

[0071] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A combined flexible sound absorbing and insulating barrier, characterized in that: include: A mounting base (1), wherein a plurality of sound insulation barriers (2) are provided on the top of the mounting base (1), wherein an aluminum plate is provided on the outer surface of the sound insulation barrier (2) as a protective layer thereof, and the aluminum plate is fixedly connected to a second mounting frame (7) and a first mounting frame (6); A support assembly for supporting the aluminum plate to ensure the stability and wind resistance of the sound insulation barrier (2), the support assembly comprising a mounting plate (503) fixedly connected to the outside of the second mounting frame (7) and the first mounting frame (6), the inner side of the mounting plate (503) is provided with mounting holes (504) at equal intervals, the interior of the mounting plate (503) is slidably connected to a movable seat (505), the outer through hole of the movable seat (505) is threadedly connected to a second driving screw (506), the outer side of the second driving screw (506) is fixedly connected to a second moving rod (509), the inner side of the movable seat (505) is slidably connected to two first moving rods (507), the two first moving rods (507) are connected via a return spring (508), the outer side of the movable seat (505) is rotatably connected to a support plate (501), and the bottom end of the support plate (501) is hinged to a support seat (502); The splicing assembly is used to connect the aluminum plate protective layers of adjacent noise barriers (2) to ensure a stable connection and sealing between the units of the noise barriers (2).

2. A combined flexible sound absorbing and insulating barrier according to claim 1, characterized in that: The splicing assembly includes a driving screw rod (401) rotatably mounted inside the second mounting frame (7), the external thread of the driving screw rod (401) is connected to a plurality of movable plates (403), the outer sides of the movable plates (403) are rotatably connected to a plurality of connecting rods (405), the inner side of the second mounting frame (7) is provided with a plurality of through holes, the inner sides of the through holes are slidably connected to the insertion rods (402), and the inner side of the first mounting frame (6) is provided with a plurality of slots (404).

3. The combined flexible sound absorbing and isolating barrier according to claim 1, characterized in that: One end of the movable rod (507) is configured to be conical, and a plurality of ground anchors are provided on the outer surface of the support seat (502).

4. A combined flexible sound absorbing and isolating barrier according to claim 2, characterized in that: One end of each of the connecting rods (405) away from the movable plate (403) is movably connected to one end of the insertion rod (402) at the corresponding position.

5. The combined flexible sound absorbing and isolating barrier according to claim 2, characterized in that: The top of the second mounting frame (7) is rotatably connected to a rotating knob (3), and the top of the first driving screw (401) is fixedly connected to the outer side of the rotating knob (3).

6. The combined flexible sound absorbing and isolating barrier according to claim 1, characterized in that: One end of the moving rod 1 (507) away from the return spring (508) is plugged into the inner side of the mounting hole (504), and one end of the moving rod 2 (509) is provided with an inclined surface.

7. The combined flexible sound absorbing and isolating barrier according to claim 1, characterized in that: A limiting groove (8) is provided on the inner side of the mounting base (1), and a plurality of pulleys (9) are slidably connected inside the limiting groove (8). The bottoms of the mounting frame 1 (6) and the mounting frame 2 (7) are rotatably connected to the tops of the pulleys (9).

8. The combined flexible sound absorbing and isolating barrier according to claim 2, characterized in that: The longitudinal section of the insertion rod (402) is arranged to be square, and one end of the insertion rod (402) is plugged into and fitted with the inner side of the slot (404).

9. The combined flexible sound absorbing and isolating barrier according to claim 1, characterized in that: The outer surface of the noise barrier (2) is provided with folds.

10. The combined flexible sound absorbing and isolating barrier according to claim 2, characterized in that: A guide rod is slidably connected to the inner through hole of the movable plate (403), and the upper and lower ends of the guide rod are fixedly connected to the inner wall of the second mounting frame (7).

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