Noise monitoring system for high-speed construction

Abstract

The invention relates to a noise monitoring system for high-speed construction, which belongs to the technical field of construction noise monitoring and comprises a first monitor, a second monitor, a master control system and an anti-noise device. The anti-noise devices are arranged on the two sides of a highway, and the first monitor and the second monitor are arranged on the inner side and the outer side of any anti-noise device respectively. The first monitor and the second monitor are both connected with the main control system, the first monitor is used for monitoring noise generated in a construction area and uploading the noise to the main control system, and the main control system drives the anti-noise device to adjust the thickness or height according to noise data uploaded by the first monitor; the second monitor is used for monitoring the volume after noise reduction and uploading the volume data to the main control system, and the main control system drives the anti-noise device to actively prevent and treat the construction noise according to the volume data uploaded by the second monitor, so that the problem that a complex noise source generated in high-speed construction is unstable is solved, and the construction noise monitoring and preventing and treating effects are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of construction noise monitoring, and in particular relates to a noise monitoring system for high-speed construction. Background Art

[0002] In the field of high-speed construction, with the acceleration of urbanization and the continuous advancement of infrastructure construction, various high-speed construction projects such as roads, bridges, subways, etc. are increasingly frequent. However, these construction processes are often accompanied by a large number of mechanical operations, material transportation and manual operations, which inevitably generate a lot of noise.

[0003] For example, heavy machinery and equipment such as excavators, bulldozers, road rollers, and pile drivers commonly used on construction sites will generate high-intensity noise during operation due to friction, vibration, and collision of mechanical parts. Frequently entering and exiting transport vehicles, such as heavy trucks and loaders, also generate engine noise, tire-road friction noise, and brake noise during driving, which are also important sources of construction noise. Due to the long construction period of highways and the complex and diverse construction content, the construction machinery and quantity required at different construction stages are different. Even in the same construction stage, the number of construction machinery invested will change, which will cause the occurrence time and intensity of construction noise to be more random and irregular, making it difficult to predict and control. In addition, there are many types of construction machinery, and the noise characteristics of different equipment are different. Some noises are relatively stable, some are periodic, and some have sudden peaks, which further increases the difficulty of noise monitoring and prevention.

[0004] Therefore, there is a need for a system that can monitor and prevent noise in a construction environment with complex sound sources. Summary of the invention

[0005] In order to solve the above problems existing in the prior art, the present invention provides a noise monitoring system for high-speed construction, which solves the problem that there are many types of construction machinery and the noise sources generated by construction are complex, which further increases the difficulty of noise monitoring and prevention.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A noise monitoring system for high-speed construction, comprising a first monitoring instrument, a second monitoring instrument, a main control system and a noise prevention device; the noise prevention device is arranged on both sides of the high-speed road, and the first monitoring instrument and the second monitoring instrument are arranged on the inner side and the outer side of the noise prevention device respectively;

[0008] The first monitor and the second monitor are both connected to the main control system. The first monitor is used to monitor the type of noise generated in the construction area and upload the data to the main control system. The main control system drives the noise prevention device to adjust the thickness or height according to the noise data uploaded by the first monitor. The second monitor is used to monitor the volume after noise reduction and upload the volume data to the main control system. The main control system drives the noise prevention device to actively prevent and control construction noise according to the volume data uploaded by the second monitor.

[0009] Preferably, the noise reduction device includes a first noise reduction plate and a second noise reduction plate; it also includes a moving mechanism and a height adjustment mechanism; the first noise reduction plate is fixedly arranged on the side of the highway, the height adjustment mechanism is installed on the first noise reduction plate, the height adjustment mechanism is connected to the second noise reduction plate, the moving mechanism is installed on the top of the first noise reduction plate, and the other end of the moving mechanism is also rotatably connected to the second noise reduction plate; the height adjustment mechanism includes a first screw motor, an adjustment block and a support plate; the first screw motor is electrically connected to the main control system, the first screw motor is installed on the side of the first noise reduction plate close to the second noise reduction plate, the adjustment block is coaxially connected to the output shaft of the first screw motor, and one end of the support plate is hinged to the adjustment block and the other end is hinged to the second noise reduction plate.

[0010] Preferably, the first noise reduction plate and the second noise reduction plate are each provided with four sealing edges on opposite sides, and the sealing edges and the first noise reduction plate and the second noise reduction plate form a closed sound insulation space.

[0011] Preferably, the moving mechanism comprises two rotating shafts, the two rotating shafts are rotatably connected to the first noise reduction plate and the second noise reduction plate respectively, and the two rotating shafts are respectively located at the left and right sides of the first noise reduction plate and the second noise reduction plate.

[0012] Preferably, there are multiple noise reduction devices, and multiple noise reduction devices are installed along the side of the highway to form a noise reduction wall. The noise reduction device also includes a third noise reduction plate and a telescopic rod. The third noise reduction plate moves relative to the second noise reduction plate through the telescopic rod, and the third noise reduction plate is located on the side of the second noise reduction plate away from the first noise reduction plate; the moving mechanism includes a moving drive member and multiple interlocking moving members, the moving drive member is installed on the first noise reduction plate located at the end of the noise reduction wall and connected to the third noise reduction plate, and the moving drive member is electrically connected to the main control system; any of the interlocking moving members is installed on adjacent noise reduction devices, and when the third noise reduction plate at the end of the noise reduction wall moves, it drives the adjacent third noise reduction plate to move.

[0013] Preferably, the interlocking moving part includes a linkage shaft, two transmission spur teeth and two transmission round teeth; the two transmission spur teeth are respectively hinged to the adjacent third noise reduction plates, and the two transmission round teeth are respectively rotatably set on the adjacent first noise reduction plates, and any transmission spur tooth is meshed with the transmission round teeth, and the linkage shaft is coaxially fixedly installed with the two round teeth.

[0014] Preferably, the mobile driving member includes a second screw motor, a driving spherical tooth and a driving spur tooth; the second screw motor and the driving spherical tooth are both installed on the top of the first noise reduction plate, the driving spherical tooth and the screw of the second screw motor are coaxially connected, and the driving spur tooth and the driving spherical tooth are meshed; the driving spur tooth is provided with a rotating connection part, and the rotating connection part is rotatably connected to the third noise reduction plate.

[0015] Preferably, the first noise reduction board and the second noise reduction board are multi-layer composite sound insulation boards.

[0016] Preferably, a serrated wall for noise reduction is provided on a side of the second noise reduction plate opposite to the first noise reduction plate.

[0017] Preferably, the noise reduction device also includes an active noise reduction mechanism, which is arranged on a side of the first noise reduction plate close to the construction area, and the active noise reduction mechanism includes a microphone, a signal processing unit and a speaker; the microphone and the speaker are both electrically connected to the signal processing unit, the microphone is used to collect noise generated by the construction and upload it to the signal processing unit, the signal processing unit is connected to the main control system, the main control system sends instructions to the signal processing unit according to the noise-reduced data uploaded by the second monitor, and the signal processing unit sends a sound wave signal with a phase opposite to the noise to the speaker according to the noise data uploaded by the microphone.

[0018] The beneficial effects of the present invention are:

[0019] The present application increases the height of the noise-proofing device or adjusts its structure to enhance the reflection and scattering capabilities of high-frequency noise; if it is low-frequency noise, the thickness of the noise-proofing device is increased to better absorb the low-frequency noise. By monitoring the frequency characteristics of construction noise, the noise-proofing device is driven to perform targeted protection, which can solve the problem of unstable complex noise sources generated during high-speed construction and improve the monitoring and prevention effects of construction noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0021] Figure 1 A schematic diagram of the structure of a noise monitoring system in a high state provided in one embodiment of the present invention;

[0022] Figure 2 It is a structural schematic diagram of a noise monitoring system provided in one embodiment of the present invention in a thickness state;

[0023] Figure 3 It is a schematic diagram of the installation structure of the mobile mechanism provided in one embodiment of the present invention;

[0024] Figure 4 A schematic diagram of a connection structure of a first noise reduction plate and a second noise reduction plate provided in one embodiment of the present invention;

[0025] Figure 5 It is a left-side structural schematic diagram of a third noise reduction plate provided in one embodiment of the present invention;

[0026] Legend: 11. First monitor; 12. Second monitor; 3. Noise-proof device; 31. First noise reduction plate; 32. Second noise reduction plate; 33. Sealing edge; 34. Third noise reduction plate; 35. Telescopic rod; 4. Moving mechanism; 41. Rotating shaft; 42. Moving drive member; 421. Second screw motor; 422. Driving round teeth; 423. Driving spur teeth; 43. Interlocking moving member; 431. Linkage rotating shaft; 432. Transmission spur teeth; 433. Transmission round teeth; 5. Height adjustment mechanism; 51. First screw motor; 52. Adjustment block; 53. Support plate; 6. Sawtooth wall; 71. Speaker. DETAILED DESCRIPTION

[0027] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0028] like Figure 1-Figure 5 As shown, a noise monitoring system for high-speed construction includes a first monitoring instrument 11, a second monitoring instrument 12, a main control system and a noise prevention device 3; the noise prevention device 3 is arranged on both sides of the highway, and the first monitoring instrument 11 and the second monitoring instrument 12 are arranged on the inner side and the outer side of the noise prevention device 3 respectively;

[0029] During high-speed construction, the sound source of machinery is not fixed. If the measures to directly prevent and control the unstable sound sources generated during construction are not mature, it will be difficult to achieve effective monitoring and prevention of construction noise. However, regardless of whether the noise is generated by mobile or fixed sources, high-speed construction has strict control over each link. Therefore, regardless of whether the sound source is mobile or fixed, the frequency of the noise generated by the construction will not change much. Therefore, targeted prevention and control based on the frequency characteristics of the noise during the construction process can produce obvious noise monitoring and prevention effects. For example, the thickness of the sound barrier is positively correlated with its sound insulation effect. Especially in the control of low-frequency noise, thicker sound barriers can more effectively block low-frequency sound waves. The wavelength of low-frequency sound waves is longer, so a thicker barrier is needed to form effective reflection and isolation; in this embodiment, the first monitor 11 and the second monitor 12 are both connected to the main control system, and the first monitor 11 is used to monitor the type of noise generated in the construction area and upload it to the main control system. The main control system drives the noise prevention device 3 to adjust the thickness or height according to the noise data uploaded by the first monitor 11; the first monitor 11 can analyze the frequency distribution of the noise signal through the built-in acoustic sensor and signal processing algorithm to identify the wavelength type of the noise (existing technology), that is, long-wave (low-frequency) and short-wave (high-frequency) noise. When the first monitor 11 identifies that there are components with longer wavelengths in the noise, it uploads the wavelength-related data to the main control system. After receiving the data, the main control system will preliminarily determine that the low-frequency noise has a greater impact on the surrounding environment, and the main control system will preliminarily adjust the thickness of the noise prevention device 3. By increasing the thickness of the noise prevention device 3, it is effective Absorb and isolate low-frequency noise; when the first monitoring instrument 11 recognizes that there are shorter wavelength components in the noise, the main control system drives the noise reduction device 3 to adjust its height, increase the height of the noise reduction device 3 to change the propagation path of the sound waves, reduce the linear propagation of high-frequency noise, and use the reflection and scattering effects of the ground and other obstacles to further reduce the impact of high-frequency noise; convert the complex noise source generated in the construction area into the frequency of the acquired noise and prevent and control it according to the frequency characteristics of the noise, increase the thickness of the noise reduction device 3 to absorb low-frequency noise, and at the same time, the noise reduction device 3 can also switch from the thickness state to the height state, and increase the height of the noise reduction device 3 to prevent and control high-frequency noise. The complex noise generated in the construction area will always spread to the surroundings, and the noise in the diffusion process will spread at the frequency when it is formed. Therefore, by changing the thickness and height of the noise reduction device 3, the problem that the complex noise source in the construction area is difficult to prevent and control can be solved.

[0030] The second monitor 12 is deployed on the outside of the noise reduction device 3, and is responsible for monitoring the noise level after the noise reduction process and uploading the monitored volume data to the main control system. The main control system evaluates whether the noise reduction of the current noise reduction device 3 has achieved the expected noise reduction effect based on the data of the second monitor 12. If it is found that the noise still has a great impact on the surrounding environment, the noise reduction device 3 also has the function of active prevention and control. At this time, the main control system drives the noise reduction device 3 to cancel the sound, actively reduce noise, and further improve the noise prevention and control effect.

[0031] In summary, the present application increases the height of the noise reduction device 3 or adjusts its structure to enhance the reflection and scattering capabilities of high-frequency noise; if there is a lot of residual low-frequency noise, the thickness of the noise reduction device 3 will be increased to better absorb the low-frequency noise. By monitoring the frequency characteristics of the construction noise and driving the noise reduction device 3 for targeted protection, the problem of complex noise sources generated in high-speed construction can be solved, and the monitoring and prevention effects of construction noise are improved.

[0032] In one embodiment, the noise reduction device 3 includes a first noise reduction plate 31 and a second noise reduction plate 32; it also includes a moving mechanism 4 and a height adjustment mechanism 5; the first noise reduction plate 31 is fixedly arranged on the side of the highway, the height adjustment mechanism 5 is installed on the first noise reduction plate 31, the height adjustment mechanism 5 is connected to the second noise reduction plate 32, the moving mechanism 4 is installed on the top of the first noise reduction plate 31, and the other end of the moving mechanism 4 is also connected to the second noise reduction plate 32; the height adjustment mechanism 5 includes a first screw motor 51, an adjustment block 52 and a support plate 53; the screw motor is electrically connected to the main control system, the first screw motor 51 is installed on the side of the first noise reduction plate 31 close to the second noise reduction plate 32, and the adjustment block 52 is coaxially threaded with the output shaft of the first screw motor 51; first, the main control system issues a height adjustment instruction according to environmental noise monitoring data or preset conditions;

[0033] The command is transmitted to the first screw motor 51 through an electrical connection as the basis for the motor start and rotation direction. After receiving the command from the main control system, the first screw motor 51 starts to work and generates a rotational motion. Since the adjustment block 52 is coaxially connected to the output shaft of the first screw motor 51, the adjustment block 52 will move downward with the rotation of the first screw motor 51, and drive the support plate 53 to move downward. The two ends of the support plate 53 are respectively hinged to the adjustment block 52 and the second noise reduction plate 32. The downward movement of the support plate 53 drives the second noise reduction plate 32 to rotate; at the same time, the second noise reduction plate 32 is rotationally connected to the first noise reduction plate 31 through the rotating shaft 41;

[0034] Therefore, under the downward pulling force of the support plate 53, the second noise reduction plate 32 and the rotating shaft 41 rotate counterclockwise. Since the rotating shaft 41 is installed on the upper side of the first noise reduction plate 31, the second noise reduction plate 32 supplements the height from the top of the first noise reduction plate 31; similarly, when the adjustment block 52 moves downward, the second noise reduction plate 32 rotates clockwise, and the height and thickness states are adjusted by changing the movement direction of the adjustment block 52.

[0035] In one embodiment, the moving mechanism 4 includes two rotating shafts 41, one end of any rotating shaft 41 is fixedly connected to the first noise reduction plate 31, and the other end is rotatably connected to the second noise reduction plate 32, and the two rotating shafts 41 are respectively located on the left and right sides of the first noise reduction plate 31 and the second noise reduction plate 32; the rotating shaft 41 includes two rotating rods and a supporting rod, one rotating rod is fixedly set on the first noise reduction plate 31, and the other rotating rod is rotatably connected to the second noise reduction plate 32, and the two rotating rods are fixedly installed at the ends of the supporting rods, so that the second noise reduction plate 32 rotates around the rotating rod connected thereto, and the support rod provides stable rotation support for the second noise reduction plate 32.

[0036] In one embodiment, four sealing edges 33 are provided on the adjacent sides of the first noise reduction plate 31 and the second noise reduction plate 32. The sealing edges 33 and the first noise reduction plate 31 and the second noise reduction plate 32 form a closed soundproof space. When sound waves enter the closed soundproof space, the sound waves will be reflected multiple times between the first noise reduction plate 31 and the second noise reduction plate 32, and interact with the noise reduction material, thereby being effectively attenuated. Since the closed soundproof space is formed, external noise is difficult to penetrate the soundproof space, and the internal sound is also effectively confined within the space, thereby significantly improving the overall soundproof effect.

[0037] In one embodiment, since high-speed construction is carried out in stages, it is only necessary to install the noise-proofing device 3 in the construction area. However, the existing noise-proofing device 3 is limited in length. In order to completely cover the construction area, multiple noise-proofing devices 3 need to be installed. When the thickness of the noise-proofing wall needs to be adjusted, the noise-proofing device 3 is switched from the height state to the thickness state. Then, when the first monitoring instrument 11 identifies the presence of shorter wavelength components in the noise, the wavelength-related data is uploaded to the main control system. After receiving the data, the main control system will preliminarily determine that the low-frequency noise has a greater impact on the surrounding environment. The main control system starts the mobile drive 42. After receiving the signal, the mobile drive 42 starts to work and drives the third noise reduction plate 34 directly connected thereto to move along the rear end of the first noise reduction plate 31, thereby increasing the distance between the first noise reduction plate 31 and the third noise reduction plate 34.

[0038] An interlocking moving part 43 is installed between adjacent noise reduction devices 3, which can ensure that when one third noise reduction plate 34 moves, it can drive the adjacent third noise reduction plates 34 to move synchronously, that is, in order to save costs, only one driving source can drive the remaining third noise reduction plates 34 to move. Specifically, when the third noise reduction plate 34 at the end starts to move, it establishes a connection with the adjacent third noise reduction plate 34 through the interlocking moving part 43, and transmits the moving force to it. The chain reaction will propagate along the entire noise reduction wall, so that all the third noise reduction plates 34 can move synchronously and coordinately, thereby increasing the thickness of the noise reduction wall and effectively absorbing and isolating low-frequency noise.

[0039] Specifically, one end of the telescopic rod 35 is fixed to the second noise reduction plate 32, and the other end is fixed to the third noise reduction plate 34. The telescopic rod 35 has the function of extending and shortening the length. When the third noise reduction plate 34 is driven to move, the length of the telescopic rod 35 becomes longer, thereby causing the third noise reduction plate 34 to move relative to the second noise reduction plate 32, thereby increasing the distance between the two. At the same time, since the first noise reduction plate 31 is also fixed, the third noise reduction plate 34 also increases the distance from the first noise reduction plate 31 when moving, thereby increasing the thickness of the noise protection wall.

[0040] In one embodiment, the interlocking moving member 43 includes a linkage shaft 431, two transmission spur teeth 432 and two transmission round teeth 433; the two transmission spur teeth 432 are respectively hinged to the adjacent third noise reduction plate 34, and the two transmission round teeth 433 are respectively rotatably set on the adjacent first noise reduction plate 31, and any transmission spur tooth 432 is meshed with the transmission round teeth 433, and the linkage shaft 431 is coaxially fixedly installed with the two transmission round teeth 433. When the third noise reduction plate 34 is driven to move by the mobile driving member 42, the transmission round teeth 433 thereon will be driven to move as the active wheel, and the transmission round teeth 433 at the other end drive the transmission round teeth 433 on the other noise reduction plate as the driven wheel to rotate synchronously through the linkage shaft 431, thereby driving the adjacent third noise reduction plate 34 to move. Through the meshing of the transmission spur teeth 432 and the transmission round teeth 433 and the synchronization of the linkage shaft 431, the adjacent third noise reduction plate 34 can automatically and synchronously adjust its position.

[0041] In one embodiment, the second screw motor 421 is installed on the top of the first noise reduction plate 31 as a power source. The second screw motor 421 rotates. Since the driving spherical teeth 422 are coaxially connected to the second screw motor 421, the driving spherical teeth 422 also rotates accordingly. The driving spherical teeth 422 rotate and drive the spur teeth 423 to move linearly through the meshing relationship, and the rotational motion of the driving spherical teeth 422 is changed into the linear motion of the driving spur teeth 423. The third noise reduction plate 34 connected to the driving spur teeth 423 is driven as a driving source to move, so that the distance between the third noise reduction plate 34 and the second noise reduction plate 32 increases.

[0042] The setting of the rotating connection part ensures that when the second noise reduction plate 32 is switched to the height state, the driving spur teeth 423 are fixed, and the second noise reduction plate 32 and the driving spur teeth 423 rotate. Similarly, the transmission spur teeth 432 are hinged to the third noise reduction plate 34, so that when the second noise reduction plate 32 is changed to the height state, the third noise reduction plate 34 can rotate with the second noise reduction plate 32 while maintaining the meshing relationship between the transmission spur teeth 432 and the transmission round teeth 433, that is, the transmission spur teeth 432 and the transmission round teeth 433 remain stationary, and the third noise reduction plate 34 rotates relative to the transmission spur teeth 432, so that the movements between the moving mechanism 4 and the height adjustment mechanism 5 will not interfere with each other.

[0043] In one embodiment, the first noise reduction plate 31 and the second noise reduction plate 32 are multi-layer composite sound insulation plates, which are composed of multiple layers of sound insulation materials with different densities. When sound waves propagate inside the multi-layer composite sound insulation plates, the interfaces between the multiple layers of composite materials will produce a damping effect, so that the sound wave energy is continuously weakened and dissipated during the propagation process.

[0044] In one embodiment, a serrated wall 6 for noise reduction is provided on one side of the second noise reduction plate 32 close to the first noise reduction plate 31. The serrated wall 6 can utilize the diffraction and reflection principles of sound waves to scatter part of the noise energy to different directions, thereby reducing the linear propagation of noise.

[0045] In one embodiment, the noise reduction device 3 also includes an active noise reduction mechanism, which is arranged on the side of the first noise reduction plate 31 close to the construction area, and the active noise reduction mechanism includes a microphone, a signal processing unit and a speaker 71; the microphone and the speaker 71 are both electrically connected to the signal processing unit, and the microphone is used to collect the noise generated by the construction and upload it to the signal processing unit. The signal processing unit is connected to the main control system, and the main control system sends instructions to the signal processing unit according to the noise-reduced data uploaded by the second monitor 12, and the signal processing unit sends a sound wave signal with a phase opposite to the noise to the speaker 71 according to the noise data uploaded by the microphone; the speaker 71 emits a sound wave signal with a phase opposite to the noise, which meets the noise generated by the construction in space and cancels each other out. Due to the opposite phases, the sound wave energy is weakened or even completely canceled out after the two are superimposed, thus achieving the purpose of noise reduction; combining passive noise reduction and active noise reduction technology can achieve multi-level and all-round control of construction noise; this comprehensive noise reduction solution is more effective than a single noise reduction method and can reduce the impact of construction noise on the surrounding environment; the dynamic noise reduction system can dynamically adjust the sound wave signal according to the noise data collected by the microphone in real time to ensure that it matches the phase and amplitude of the construction noise. This flexibility enables the system to effectively respond to construction noise sources of different types and intensities; effectively reducing construction noise and improving the working environment in the construction area and its surroundings.

[0046] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A noise monitoring system for high-speed construction, characterized in that: It includes a first monitor, a second monitor, a main control system and a noise prevention device; the noise prevention device is arranged on both sides of the highway, and the first monitor and the second monitor are arranged on the inner side and the outer side of the noise prevention device respectively; The first monitor and the second monitor are both connected to the main control system. The first monitor is used to monitor the type of noise generated in the construction area and upload the data to the main control system. The main control system drives the noise prevention device to adjust the thickness or height according to the noise data uploaded by the first monitor. The second monitor is used to monitor the volume after noise reduction and upload the volume data to the main control system. The main control system drives the noise prevention device to actively prevent and control construction noise according to the volume data uploaded by the second monitor.

2. A noise monitoring system for high-speed construction according to claim 1, characterized in that: The noise reduction device includes a first noise reduction plate and a second noise reduction plate; it also includes a moving mechanism and a height adjustment mechanism; the first noise reduction plate is fixedly arranged on the side of the highway, the height adjustment mechanism is installed on the first noise reduction plate, the height adjustment mechanism is connected to the second noise reduction plate, the moving mechanism is installed on the top of the first noise reduction plate, and the other end of the moving mechanism is also rotatably connected to the second noise reduction plate; the height adjustment mechanism includes a first screw motor, an adjustment block and a support plate; the first screw motor is electrically connected to the main control system, the first screw motor is installed on the side of the first noise reduction plate close to the second noise reduction plate, the adjustment block is coaxially connected to the output shaft of the first screw motor, and one end of the support plate is hinged to the adjustment block and the other end is hinged to the second noise reduction plate.

3. A noise monitoring system for high-speed construction according to claim 2, characterized in that: Four sealing edges are arranged on opposite sides of the first noise reduction plate and the second noise reduction plate, and the sealing edges and the first noise reduction plate and the second noise reduction plate form a closed sound insulation space.

4. A noise monitoring system for high-speed construction according to claim 3, characterized in that: The moving mechanism includes two rotating shafts, which are rotatably connected to the first noise reduction plate and the second noise reduction plate respectively, and the two rotating shafts are respectively located at the left and right sides of the first noise reduction plate and the second noise reduction plate.

5. A noise monitoring system for high-speed construction according to claim 3, characterized in that: There are multiple noise reduction devices, and multiple noise reduction devices are installed along the side of the highway to form a noise reduction wall. The noise reduction device also includes a third noise reduction plate and a telescopic rod. The third noise reduction plate moves relative to the second noise reduction plate through the telescopic rod, and the third noise reduction plate is located on the side of the second noise reduction plate away from the first noise reduction plate; the moving mechanism includes a moving drive member and multiple interlocking moving members, the moving drive member is installed on the first noise reduction plate located at the end of the noise reduction wall and connected to the third noise reduction plate, and the moving drive member is electrically connected to the main control system; any of the interlocking moving members is installed on adjacent noise reduction devices, and when the third noise reduction plate at the end of the noise reduction wall moves, it drives the adjacent third noise reduction plate to move.

6. A noise monitoring system for high-speed construction according to claim 5, characterized in that: The interlocking moving part includes a linkage shaft, two transmission spur teeth and two transmission round teeth; the two transmission spur teeth are respectively hinged to the adjacent third noise reduction plates, and the two transmission round teeth are respectively rotatably set on the adjacent first noise reduction plates, and any transmission spur tooth is meshed with the transmission round teeth, and the linkage shaft is coaxially fixedly installed with the two round teeth.

7. A noise monitoring system for high-speed construction according to claim 5, characterized in that: The mobile driving member includes a second screw motor, a driving spherical tooth and a driving spur tooth; the second screw motor and the driving spherical tooth are both installed on the top of the first noise reduction plate, the driving spherical tooth and the screw of the second screw motor are coaxially connected, and the driving spur tooth and the driving spherical tooth are meshed; the driving spur tooth is provided with a rotating connection part, and the rotating connection part is rotatably connected to the third noise reduction plate.

8. A noise monitoring system for high-speed construction according to claim 2, characterized in that: The first noise reduction board and the second noise reduction board are multi-layer composite sound insulation boards.

9. A noise monitoring system for high-speed construction according to claim 2, characterized in that: A sawtooth wall for noise reduction is arranged on one side of the second noise reduction plate opposite to the first noise reduction plate.

10. A noise monitoring system for high-speed construction according to claim 7, characterized in that: The noise reduction device also includes an active noise reduction mechanism, which is arranged on a side of the first noise reduction plate close to the construction area, and includes a microphone, a signal processing unit and a speaker; the microphone and the speaker are both electrically connected to the signal processing unit, and the microphone is used to collect noise generated by the construction and upload it to the signal processing unit, and the signal processing unit is connected to the main control system, and the main control system sends instructions to the signal processing unit according to the noise-reduced data uploaded by the second monitor, and the signal processing unit sends a sound wave signal with a phase opposite to the noise to the speaker according to the noise data uploaded by the microphone.

Images