Sound insulation laminated glass for bullet train

Abstract

The invention discloses bullet train sound insulation laminated glass, and relates to the technical field of high-pressure glass, the bullet train sound insulation laminated glass comprises a main body, multiple groups of high-pressure outer glass are arranged on both sides of the main body, multiple groups of sealing strips matched with the high-pressure outer glass are arranged on both sides of the main body, multiple groups of micro hydraulic cylinders are arranged in the main body, and moving blocks are arranged at the output ends of the micro hydraulic cylinders; and the moving blocks are matched with the high-pressure outer glass, multiple sets of motors are arranged in the main body, and cross rods are arranged at the output ends of the motors. During high-speed operation, air in front of a main body is compressed to generate resistance, high-pressure outer glass is impacted by airflow to cause wind pressure change and micro-deformation, meanwhile, a vibration sensor detects the vibration amplitude, when the vibration amplitude exceeds a threshold value, a motor is started, a cross-shaped sleeve drives a sleeve and a worm to rotate, and a residual worm gear is driven to enable the high-pressure outer glass to adjust the inclination angle around a rotating shaft; a sound wave reflection path is changed, resonance is reduced, wind noise is reduced, wind pressure self-adaptive sealing and dynamic sound insulation optimization are achieved, and the overall reliability is improved.

Description

Technical Field

[0001] This invention relates to the field of high-pressure glass technology, specifically to a soundproof laminated glass for high-speed trains. Background Technology

[0002] The background technology of soundproof laminated glass for high-speed trains stems from the dual requirements of noise control and safety performance in modern rail transit. With the rapid development of high-speed rail, aerodynamic noise, wheel-rail noise, and equipment vibration noise generated during train operation are transmitted into the carriage through the windows, directly affecting passenger comfort. Although traditional single-layer or double-glazed glass has a certain sound insulation effect, it is difficult to meet the requirements of high-speed trains with speeds of over 300 kilometers per hour for blocking broadband noise. To address this, the industry has drawn on aviation glass and architectural acoustics technologies to develop multi-layer composite soundproof laminated glass: its core is to sandwich a layer of glass between two tempered glass layers. Special acoustic damping materials convert sound energy into heat energy through a viscoelastic layer; at the same time, an unequal thickness glass design is used to break the sound wave resonance frequency, and edge sealing technology is combined to prevent sound bridge effect. This technology also incorporates explosion-proof characteristics. When the outer glass is impacted and breaks, the middle layer can maintain its integrity to prevent fragments from flying. Early patents showed that this structure can improve noise transmission loss by about five to eight decibels, but there are technical bottlenecks such as interlayer bubbles and high-temperature delamination. Mass production was only achieved with the application of vacuum hot pressing technology and nano-filling technology. Currently, this technology has become the standard configuration of the windows of the new generation of high-speed trains.

[0003] Existing high-speed train glass often suffers from the following drawbacks: First, traditional parallel-mounted glass is prone to resonance with low-frequency sound waves generated by wheel-rail vibration, resulting in a significant reduction in sound insulation performance, especially at high speeds. Some models use a fixed tilt angle design, which can improve sound insulation in specific frequency bands, but cannot adapt to the dynamic changes in the noise spectrum when the train changes speed, making it difficult to meet the sound insulation requirements at different speeds. Existing tilt angle adjustment schemes also have defects: electric systems rely on continuous power supply, increasing energy consumption and the risk of failure; mechanical adjustment lacks real-time response capability. In addition, wind pressure fluctuations at high speeds can cause slight deformation of the glass, resulting in gaps at the sealing interface and exacerbating aerodynamic noise leakage. Traditional sealing materials are prone to plastic deformation after long-term pressure, losing their elastic compensation ability. Summary of the Invention

[0004] Based on this, the purpose of this invention is to provide a soundproof laminated glass for high-speed trains, which solves the technical problems of parallel installation of high-speed train glass easily resonating with low-frequency vibrations, reducing the sound insulation effect; fixed tilt angle design cannot adapt to noise changes during speed changes; electric adjustment has high energy consumption and mechanical adjustment has slow response; high-speed wind pressure causes glass deformation and sound leakage; and traditional sealing materials are prone to aging and failure.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a soundproof laminated glass for high-speed trains, comprising a main body, multiple sets of high-pressure outer glass on both sides of the main body, multiple sets of sealing strips that cooperate with the high-pressure outer glass on both sides of the main body, multiple sets of miniature hydraulic cylinders inside the main body, a moving block at the output end of the miniature hydraulic cylinders and the moving block cooperating with the high-pressure outer glass, multiple sets of motors inside the main body, a cross rod at the output end of the motor, a sleeve on the outside of the cross rod, a worm gear connected to one end of the sleeve, and a residual worm wheel at the top of the worm gear.

[0006] By adopting the above technical solution, during the operation of the main body, the air in front of the main body will be compressed due to the high speed of the main body. The friction between the surface of the main body and the air will cause relative air resistance. At this time, the high-pressure outer glass installed inside the main body will be impacted by the high-speed airflow. This will cause the high-pressure outer glass to be slightly deformed due to the change in wind pressure outside the vehicle at high speed, resulting in sound leakage through gaps.

[0007] Furthermore, multiple sets of inner glass are provided on both sides of the main body. The top of the residual worm wheel is fixed to the high-pressure outer glass by screws. Multiple sets of grooves are opened inside the sleeve, and the grooves cooperate with the cross rod. The outer thread of the worm gear meshes with the teeth at the bottom end of the residual worm wheel.

[0008] By adopting the above technical solution, the air pressure sensor installed inside the main body will measure the air pressure outside. That is, when the main body is moving at high speed, the air pressure difference with the outside is Y. Then the air pressure sensor will not transmit an electrical signal to the main controller to start multiple sets of miniature hydraulic cylinders installed inside the main body. When the external air pressure exceeds Y, it reaches Y.

[0009] Furthermore, both ends of the high-pressure outer glass are equipped with rotating shafts, and the main body has multiple cavities that cooperate with the rotating shafts. The main body also has through holes that cooperate with the air pressure sensor and movable cavities that cooperate with the moving block.

[0010] By adopting the above technical solution, the air pressure sensor will transmit an electrical signal to the main controller, which will then control multiple sets of micro hydraulic cylinders to output displacement at corresponding distances. This will control the moving block set at the output end of the micro hydraulic cylinder to move the fixed high-pressure outer glass, making the distance between the high-pressure outer glass and the sealing strip more compact. When the wind pressure increases, it will push the glass to move slightly inward, enhancing the sealing performance and preventing sound leakage from gaps.

[0011] Furthermore, a sealed door is provided at one end of the main body, two sets of high-speed wheels are provided at the bottom of the main body, the moving block is fixed to the high-pressure outer glass with screws, and a vibration sensor is provided inside the main body.

[0012] By adopting the above technical solution, the vibration sensor installed inside the main body is also in working condition. When the vibration sensor detects a vibration amplitude of S during normal operation, the main control console will not start the motor. However, when the vibration sensor detects a larger vibration amplitude that exceeds the threshold of S, the main control console will control the motor to start. The motor output end will be connected to a cross sleeve, which will rotate the sleeve engaged on its outer side. The rotation of the sleeve will cause the worm to rotate. When the worm rotates, it will transmit the rotational force to the residual worm wheel through the thread. The residual worm wheel will then drive the high-pressure outer glass fixed at its top to rotate around the axis of rotation to a certain extent. This achieves the effect of dynamically changing the tilt angle to change the sound wave reflection path, reducing resonance peaks, improving low-frequency sound insulation, optimizing the reflection direction of high-frequency airflow noise through the tilt angle, and reducing wind noise.

[0013] In summary, the present invention has the following beneficial effects: When the main body is running at high speed, the air in front of it is compressed, generating resistance. The high-pressure outer glass is impacted by the airflow, causing changes in wind pressure and slight deformation, which may produce sound leakage. The air pressure sensor monitors the external air pressure. When the air pressure exceeds the threshold, the micro hydraulic cylinder is activated to push the moving block to move the high-pressure outer glass slightly inward, enhancing the fit with the sealing strip. At the same time, the vibration sensor detects the vibration amplitude. When the vibration exceeds the threshold, the motor is activated, which drives the sleeve and worm gear to rotate through the cross sleeve. This drives the residual worm wheel to adjust the tilt angle of the high-pressure outer glass around the rotation axis, changing the sound wave reflection path, reducing resonance and wind noise, achieving wind pressure adaptive sealing and dynamic sound insulation optimization, and improving overall reliability. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure from a first perspective of the present invention;

[0015] Figure 2 This is a schematic diagram of the overall structure of the present invention from a second perspective;

[0016] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0017] Figure 4 This is a partial structural schematic diagram of the present invention;

[0018] Figure 5 For the present invention Figure 4 Enlarged view of point A;

[0019] Figure 6 For the present invention Figure 4 Enlarged view of point B;

[0020] Figure 7 This is a partial structural diagram of the present invention;

[0021] Figure 8This is a partial side view of the present invention.

[0022] Figure 9 For the present invention Figure 8 Enlarged view of point C.

[0023] In the diagram: 1. Main body; 2. High-speed wheel; 3. Sealed door; 4. High-pressure outer glass; 5. Air pressure sensor; 6. Inner glass; 7. Residual worm gear; 8. Worm gear; 9. Motor; 10. Sleeve; 11. Vibration sensor; 12. Miniature hydraulic cylinder; 13. Moving block; 14. Cross sleeve; 15. Groove; 16. Movable cavity; 17. Sealing strip; 18. Rotating shaft. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0025] The embodiments of the present invention will now be described.

[0026] A type of soundproof laminated glass for high-speed trains, such as Figures 1-9 As shown, the system includes a main body 1, with multiple sets of high-pressure outer glass 4 on both sides of the main body 1, and multiple sets of sealing strips 17 that cooperate with the high-pressure outer glass 4 on both sides of the main body 1. Multiple sets of micro hydraulic cylinders 12 are installed inside the main body 1. The output end of the micro hydraulic cylinder 12 is equipped with a moving block 13, and the moving block 13 cooperates with the high-pressure outer glass 4. Multiple sets of motors 9 are installed inside the main body 1. The output end of the motor 9 is equipped with a cross rod 14. A sleeve 10 is installed on the outside of the cross rod 14. One end of the sleeve 10 is connected to a worm gear 8. The top of the worm gear 8 is equipped with a residual worm wheel 7. During the operation of the main body 1, the air in front of the main body 1 is compressed due to the high speed of the high-speed movement. The friction between the surface of the main body 1 and the air causes relative air resistance. At this time, the high-pressure outer glass 4 installed inside the main body 1 will be impacted by the high-speed airflow. This will cause the high-pressure outer glass 4 to deform slightly due to the change in wind pressure outside the vehicle during high-speed driving, resulting in gaps and sound leakage.

[0027] For example, multiple sets of inner glass 6 are provided on both sides of the main body 1. The top of the residual worm wheel 7 is fixed to the high-pressure outer glass 4 by screws. Multiple sets of grooves 15 are opened inside the sleeve 10, and the grooves 15 cooperate with the cross rod 14. The outer thread of the worm 8 meshes with the bottom teeth of the residual worm wheel 7. The air pressure sensor 5 installed inside the main body 1 measures the air pressure outside. When the air pressure of the main body 1 is Y1, the air pressure sensor 5 will not transmit an electrical signal to the main controller to start multiple sets of micro hydraulic cylinders 12 installed inside the main body 1. When the external air pressure exceeds Y1 and reaches Y2.

[0028] For example, both ends of the high-pressure outer glass 4 are provided with rotating shafts 18. The main body 1 has multiple cavities that cooperate with the rotating shafts 18. The main body 1 has through holes that cooperate with the air pressure sensor 5. The main body 1 has movable cavities that cooperate with the moving block 13. The air pressure sensor 5 transmits electrical signals to the main controller, which then controls multiple sets of micro hydraulic cylinders 12 to output displacements of corresponding distances. This controls the moving block 13 at the output end of the micro hydraulic cylinder 12 to move the fixed high-pressure outer glass 4, making the distance between the high-pressure outer glass 4 and the sealing strip 17 more compact. When the wind pressure increases, the glass is pushed slightly inward to enhance the sealing performance and prevent sound leakage from gaps.

[0029] For example, a sealing door 3 is provided at one end of the main body 1, and two sets of high-speed wheels 2 are provided at the bottom of the main body 1. The moving block 13 is fixed to the high-pressure outer glass 4 by screws. A vibration sensor 11 is provided inside the main body 1. The vibration sensor 11 inside the main body 1 is also in working condition. When the vibration sensor 11 detects a vibration amplitude of S1, the main control console will not start the motor 9. However, when the vibration amplitude detected by the vibration sensor 11 is large and exceeds the threshold, that is, reaches S2, the main control console will control the motor 9 to start and then... The cross sleeve 14 set at the output end of the machine 9 rotates synchronously with the sleeve 10 engaged on its outer side. The rotation of the sleeve 10 causes the worm 8 to rotate. When the worm 8 rotates, it transmits the rotational force to the residual worm wheel 7 through the thread. At this time, the residual worm wheel 7 drives the high-pressure outer glass 4 fixed at its top to rotate around the axis 18 with a certain amplitude. This achieves the effect of dynamically changing the tilt angle to change the sound wave reflection path, reduce resonance peaks, improve low-frequency sound insulation, optimize the reflection direction of high-frequency airflow noise through the tilt angle, and reduce wind noise.

[0030] The working principle of this invention is as follows: During use, when the main body 1 is moving at high speed, the air in front of the main body 1 is compressed. The friction between the surface of the main body 1 and the air causes relative air resistance. At this time, the high-pressure outer glass 4 installed inside the main body 1 will be impacted by the high-speed airflow, which will cause the high-pressure outer glass 4 to be slightly deformed due to the change in wind pressure outside the vehicle when driving at high speed, resulting in sound leakage through gaps.

[0031] At this time, the air pressure sensor 5 installed inside the main body 1 will measure the air pressure outside. When the main body 1 moves at high speed, the air pressure value outside is Y1. Then the air pressure sensor 5 will not transmit an electrical signal to the main controller to start multiple sets of miniature hydraulic cylinders 12 installed inside the main body 1. When the external air pressure value exceeds Y1 and reaches Y2.

[0032] At this time, the air pressure sensor 5 will send an electrical signal to the main controller, which will then control multiple sets of micro hydraulic cylinders 12 to output displacement at corresponding distances. This will control the moving block 13 set at the output end of the micro hydraulic cylinder 12 to move the fixed high-pressure outer glass 4, making the distance between the high-pressure outer glass 4 and the sealing strip 17 more compact. When the wind pressure increases, it will push the glass to move slightly inward, enhancing the sealing performance and preventing gaps and sound leakage.

[0033] Meanwhile, the vibration sensor 11 installed inside the main body 1 is also in working condition. When the vibration sensor 11 detects a vibration amplitude of S1 during normal operation, the main control console will not start the motor 9. However, when the vibration amplitude detected by the vibration sensor 11 is large and exceeds the threshold, i.e., reaches S2, the main control console will control the motor 9 to start. The cross sleeve 14 installed at the output end of the motor 9 will synchronously rotate the sleeve 10 that is engaged on its outer side. The rotation of the sleeve 10 will cause the worm 8 to rotate. When the worm 8 rotates, it will transmit the rotational force to the residual worm wheel 7 through the thread. At this time, the residual worm wheel 7 will drive the high-pressure outer glass 4 fixed at its top to rotate around the axis 18 with a certain amplitude. This achieves the effect of changing the sound wave reflection path by dynamically changing the tilt angle, reducing resonance peaks, improving low-frequency sound insulation, optimizing the reflection direction of high-frequency airflow noise through the tilt angle, and reducing wind noise.

[0034] The above structure achieves wind pressure adaptive sealing. When the wind pressure increases, it pushes the high-pressure outer glass 4 to move slightly inward to enhance the sealing performance; when the wind pressure decreases, it returns to its original position. Furthermore, by dynamically disrupting the acoustic resonance, it solves the low-frequency sound insulation bottleneck and improves reliability.

[0035] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A type of soundproof laminated glass for high-speed trains, comprising a main body (1), characterized in that: Multiple sets of high-pressure outer glass (4) are provided on both sides of the main body (1). Multiple sets of sealing strips (17) that cooperate with the high-pressure outer glass (4) are provided on both sides of the main body (1). Multiple sets of micro hydraulic cylinders (12) are provided inside the main body (1). A moving block (13) is provided at the output end of the micro hydraulic cylinder (12), and the moving block (13) cooperates with the high-pressure outer glass (4). Multiple sets of motors (9) are provided inside the main body (1). A cross rod (14) is provided at the output end of the motor (9). A sleeve (10) is provided on the outside of the cross rod (14). A worm (8) is connected to one end of the sleeve (10). A residual worm wheel (7) is provided at the top of the worm (8).

2. The soundproof laminated glass for high-speed trains according to claim 1, characterized in that: The main body (1) has multiple sets of inner glass (6) on both sides, and the top of the residual worm gear (7) is fixed to the high-pressure outer glass (4) by screws.

3. The soundproof laminated glass for high-speed trains according to claim 1, characterized in that: The sleeve (10) has multiple sets of grooves (15) inside, and the grooves (15) cooperate with the cross rod (14). The outer thread of the worm (8) meshes with the bottom teeth of the residual worm wheel (7).

4. The soundproof laminated glass for high-speed trains according to claim 1, characterized in that: The high-pressure outer glass (4) is equipped with a rotating shaft (18) at both ends, and the main body (1) has multiple cavities that cooperate with the rotating shaft (18).

5. The soundproof laminated glass for high-speed trains according to claim 1, characterized in that: The main body (1) has a through hole that cooperates with the air pressure sensor (5) and an active cavity (16) that cooperates with the moving block (13).

6. The soundproof laminated glass for high-speed trains according to claim 1, characterized in that: A sealing door (3) is provided at one end of the main body (1), and two sets of high-speed wheels (2) are provided at the bottom of the main body (1).

7. The soundproof laminated glass for high-speed trains according to claim 1, characterized in that: The movable block (13) is fixed to the high-pressure outer glass (4) by screws, and a vibration sensor (11) is installed inside the main body (1).

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