65 results about "Sound barrier" patented technology

This invention discloses a reconstituted bamboo sound barrier and its manufacturing method, relating to the field of sound barrier technology. Specifically, it is a reconstituted bamboo sound barrier comprising spaced, inclined columns, with standard modular screen bodies fixed between the columns by clamping angle steel. The screen body uses a reconstituted bamboo main screen body as the core sound-absorbing body, combined with reconstituted bamboo panels, reconstituted bamboo cavities, reinforcing frames, and other components. The reconstituted bamboo panels have 0.3mm-1.0mm micro-perforations, forming an auxiliary sound-absorbing structure with the sealed reconstituted bamboo cavities, enhancing the sound absorption effect of the reconstituted bamboo main screen body. The diffusion texture of the reconstituted bamboo main screen body disperses reflected sound waves, improving the uniformity of the sound field, allowing more sound energy to "penetrate" into the sound-absorbing material and be consumed. The manufacturing process involves bamboo bundle pretreatment, shaping, and assembly, resulting in a product with low cost, light weight, good durability, environmental friendliness, and excellent acoustic performance, suitable for noise control on highways, railways, and other road sections.

An acoustic blanket absorbs acoustic energy and reduces noise in a launch vehicle. The acoustic blanket may be overlaid on a wall of a payload fairing of the launch vehicle. Materials and construction of the acoustic blanket allow for a relatively thin and light sound barrier. The acoustic blanket may comprise vertically-lapped polyester that is overlaid with a lightweight melamine foam. This combination of materials creates an acoustic impedance mismatch between layers that leads to absorption of acoustic energy across a relatively broad range of frequency bands. The acoustic blanket has a particular heat seal pattern that helps absorb noise while allowing the acoustic blanket to be relatively soft and flexible, which is useful for attaching the acoustic blanket to a curved wall of a fairing or other launch vehicle shapes. The acoustic blanket utilizes micro-perforations on multiple sides to allow for movement of air / venting while maintaining the bulk materials inside.

The present application relates to the field of rail transportation, in particular to a full-closed sound barrier for rail transportation, comprising a first sound barrier and a second sound barrier, a first channel and a second channel are formed on both sides between the first sound barrier and the second sound barrier, and a sound-absorbing assembly is arranged in the first channel and the second channel, the sound-absorbing assembly is provided with a first sound-absorbing module and a second sound-absorbing module, and a flow path for air circulation is formed between the first sound-absorbing module and the second sound-absorbing module, air flows through the flow path formed by the first sound-absorbing module and the second sound-absorbing module, noise energy is effectively reflected, scattered and absorbed during the propagation process, thereby effectively attenuating the sound wave intensity, greatly reducing the noise level, and gradually weakening the sound wave intensity. The present application also relates to a mounting method of the full-closed sound barrier for rail transportation.

This invention provides a laser cutting machine for sound barrier processing, relating to the field of laser processing equipment technology. It includes a worktable with a cutting machine mounted on its upper surface, and a laser head connected to the cutting machine. It also includes a dust extraction mechanism, comprising a mounting sleeve fixedly fitted onto the outer wall of the laser head. A hydraulic cylinder is connected to the side wall of the mounting sleeve. Two sets of mounting rings are provided on the side walls of the mounting sleeve. A connecting tube is slidably connected within each set of mounting rings. A magnetic ball is rotatably connected to the bottom of the connecting tube, and the magnetic ball abuts against the upper surface of the worktable. A sliding sleeve is slidably connected within the connecting tube. A straight rod is fixedly connected to the center of the sliding sleeve. A swing rod is hinged to the lower end of the straight rod, and a magnetic chuck is hinged to the other end of the swing rod. The magnetic chuck and the magnetic ball attract each other with opposite poles. This cutting machine, through its dust extraction mechanism, achieves efficient coordination between cutting operations and dust collection.

The application discloses a movable membrane-shaped metamaterial sound barrier, which comprises a thin film noise reduction unit and a structure fixing unit for arranging and fixing the thin film noise reduction unit, wherein the thin film noise reduction unit comprises a microporous membrane, a first cavity, a first sound insulation layer, a second cavity and a second sound insulation layer arranged along the sound wave propagation direction, and the microporous membrane is provided with a plurality of micropores for absorbing sound waves; when sound waves enter the first cavity through the microporous membrane, the micropores and the first cavity are used for preliminary noise reduction to reduce reflected sound generated by the sound waves; the sound energy of the transmitted sound waves is reduced through the first sound insulation layer and the second sound insulation layer; and the sound energy of the transmitted sound waves is further reduced through the second cavity. The application further provides an installation method. The sound barrier provided by the application is convenient to disassemble and assemble and has the effects of sound insulation and sound absorption, so that the noise pollution of construction equipment in a construction site can be effectively reduced.

This invention discloses a prestressed sound barrier structure with an arc-shaped pre-arched keel and its manufacturing method, relating to the field of sound barrier technology. The prestressed sound barrier structure includes a screen shell and a keel; the screen shell includes a front panel and a back panel, the front panel having a plurality of sound-absorbing holes, and the keel being disposed between the front panel and the back panel; in the installed state, at least a portion of the keel has an arched structure, and the arched structure presses against the inner side of the back panel, forcing the back panel to undergo an outward arc-shaped pre-arched deformation. The solution provided by this invention can reduce the deflection value of the screen shell when subjected to wind pressure loads.

The utility model discloses a sound barrier with a drainage function. The sound barrier comprises a base part, a barrier part and a support part. The base part is provided with a drainage cavity and a top drainage groove, the bottom wall of the drainage groove is an inclined arc-shaped surface with a low middle part and two high ends, the middle part is provided with a water leakage hole communicated with the drainage cavity, the support part is provided with a splicing groove, the bottom of the barrier part is slidably inserted into the splicing groove through the splicing part to be fixed, and the surface of the barrier plate is provided with a vertical flow guide strip which is composed of an arc-shaped noise reduction plate and a flow guide plate. The drainage channel is internally filled with sound absorption materials, a rain baffle is arranged at the top of the drainage channel, a permeable plate is embedded in the road side of the drainage cavity, a detachable filter plate is arranged at the top of the drainage channel, an outlet of the drainage cavity is connected with a drainage pipe, and a one-way swing baffle is arranged in the drainage pipe. The arc-shaped noise reduction plate and the sound absorption material cooperate to enhance the noise reduction effect, and the maintenance convenience is improved through detachable assembly.

This application relates to the field of image processing technology, and in particular to a machine vision-based method for detecting the filling quality of sound-absorbing materials in sound barriers. The method includes: acquiring a sequence of synchronized infrared and visible light video frames, performing pixel-level registration, and then stitching them together to form multi-channel input features; constructing a detection network containing an improved octave convolution module to decompose the multi-channel input features into three branches: high-frequency, mid-frequency, and low-frequency; generating an offset field and performing deformable convolution on the mid-frequency branch; averaging the variance of each channel in the feature map along the channel dimension, adding a minimum constant, and taking the square root as a temperature coefficient; performing cross-frequency fusion through a cross-attention mechanism; and extracting the low-frequency feature map as a spatial prior weight matrix when a defect region exists in the current frame, which is then fed back to the next frame after inter-frame motion compensation. This application can introduce mid-frequency transition band information and combine the differences in local spatial distribution of dual modalities to adjust the convolution sampling position, reducing boundary jitter and missed detections in video stream detection.

A high-altitude hoisting device suitable for sound barrier components relates to the technical field of hoisting device, including device body, the device body is equipped with support, the support is equipped with top plate, the top plate is provided with suspension assembly along the width direction slidingly, the inner wall of the support is provided with two support plates on both sides, the middle of two support plates is equipped with fixed frame, the fixed frame is provided with limiting assembly along the height direction slidingly, the limiting assembly includes lifting plate, the center of the lifting plate is provided with blanking groove for the sound barrier component to pass through, by setting the slidable movable part and the limiting wheel along the peripheral direction at the blanking groove of the lifting plate, a multidirectional embracing limiting structure can be formed, so that the swing and rotation caused by high-altitude wind power or vehicle body shaking can be effectively constrained, and the round stick design of the limiting wheel enables the component to smoothly slide along the vertical direction while being limited, so that the limiting effect is ensured, and the normal descending movement is not hindered.

The application provides a novel impact-resistant anti-collision anti-falling sound barrier, compared with the existing sound barrier structure, which sets a rubber strip between the limiting structure and the blocking structure, can not only prevent rigid contact between the screen body and the stand column, but also can enhance the connection strength between the limiting structure and the blocking structure, has the best anti-collision effect, the screen body is set to be a telescopic structure, can not only avoid installation errors, improve the size adaptability of the screen body, improve the installation efficiency, but also can be broken at the telescopic part when suffering from impact, avoid the screen body from falling off the stand column and falling on the road to cause secondary injury, has great application value.

This invention belongs to the field of road traffic noise control and acoustic computation technology, and relates to a physical information neural network-driven method for sound barrier shape optimization based on the isogeometric singular boundary method. The method includes: NURBS parameterization and boundary discretization based on the sound barrier's geometric design requirements; constructing an acoustic analysis model based on acoustic control equations and boundary conditions; calculating the average sound pressure level within the observation area using the isogeometric singular boundary method and using it as the objective function; constructing a physical information neural network, constraining the control point update range through a coordinate mapping layer and bounded activation functions, and iteratively optimizing using the average sound pressure level of the observation area as the loss function; and outputting the optimized sound barrier geometry after network convergence and evaluating the noise reduction effect. This invention combines the isogeometric singular boundary method with a physical information neural network, eliminating the need for mesh reconstruction and sensitivity analysis, achieving efficient adaptive optimization of the sound barrier geometry, and effectively improving the noise reduction performance of the sound barrier.

The utility model discloses a sound barrier foam aluminum screen body mounting structure, include: stand, left and right interval arrangement setting, the opposite side of two adjacent stands is equipped with the installation groove, foam aluminum screen body, between two adjacent stands, left and right sides are embedded in corresponding installation groove respectively, pre -tightening spare, is located in the left and right sides of foam aluminum screen body, and pre -tightening spare swing installation is in corresponding installation groove, sound -absorbing structure, is located in the front side of foam aluminum screen body, and is pressed between foam aluminum screen body and pre -tightening spare, adjusting part, install in stand, be used for pushing pre -tightening spare and foam aluminum screen body contact, the utility model discloses adopt foam aluminum screen body as main sound insulation structure, and it has good sound absorption performance and lightweight features. Pre -tightening spare and adjusting part realize the elimination of foam aluminum screen body mounting gap, ensure that foam aluminum screen body is closely combined with stand after installation, effectively avoided the screen body loosening and noise because of vehicle vibration or external force, improved the stability and service life of sound barrier.

The utility model relates to the technical field of sound barriers, and discloses an efficient sound insulation blocking sound barrier which comprises a first sound barrier body, the upper surface of the first sound barrier body is slidably connected with a second sound barrier body, a supporting block is fixedly connected to the interior of the first sound barrier body, and the upper surface of the supporting block is fixedly connected with a clamping block. A fixing block is fixedly connected to the interior of the second sound barrier, one end of a first spring is fixedly connected to the lower surface of the fixing block, a rotating block is fixedly connected to the other end of the first spring, a fixing shaft is rotatably connected to the interior of the rotating block, and a connecting plate is fixedly connected to the outer wall of the fixing shaft. According to the utility model, the first sound barrier and the second sound barrier are aligned, and the first sound barrier and the second sound barrier are quickly spliced for use through the matching of the supporting block, the clamping block, the fixed block, the first spring, the rotating block, the fixed shaft and the connecting plate, so that the effects of quickly splicing and reducing the installation time are achieved, and the working efficiency is improved.

This invention discloses an on-site load mechanical performance testing device for a sound barrier steel column structure, belonging to the technical field of load mechanical performance testing. It includes a loading support, formed by welding steel pipes to create a multi-layered spatial truss frame; a pulley system comprising multiple pulleys evenly spaced at the top of the loading support frame; pulleys evenly spaced at the center of the outer vertical surface of the loading support frame, adjustable up and down along the outer vertical surface; multiple steel cables, with fixed ends sleeved and connected to the sound barrier steel column, and free ends extending horizontally, passing over a pulley, and then extending downwards along the outer vertical surface of the loading support frame; and multiple counterweights, each fixedly connected to the free end of one of the steel cables. This invention discloses an on-site load mechanical performance testing device and method for a sound barrier steel column structure, with a simple structure and convenient loading test operation.

The utility model relates to the technical field of guardrails, concretely to a railway guardrail, including two symmetrical support columns and the sound barrier of insertion between two support columns, the support column top is equipped with the adjustable height's vaulting rail subassembly, the support column one side wall is equipped with a plurality of pivot seat, pivot seat all are all pivotally connected with the connecting seat, the connecting seat outside all are equipped with the universal joint, the sound barrier outer wall all are equipped with T type block, two clamping grooves between being equipped with the reinforcing rod, the reinforcing rod both ends all are equipped with the clamping column, this railway guardrail passes through the setting support column with fixed seat, and the fixed seat is fixed through a plurality of ground insertion rods and inserts the ground, and the detachable sound barrier of insertion between support columns reduces the noise penetration influence, under the cooperation of arc rail board, reduces the person or small animal vaulting integral guardrail, and the stability of combination is increased through a plurality of reinforcing rods between two support columns, and the adjacent two guardrails are inserted and cooperated through the universal joint with the ladder type slot on the connecting seat with the ladder type block.

The utility model belongs to the technical field of sound barrier, concretely relates to a sound barrier convenient to replace sound absorption board sound insulation board and laminated glass, including two steel columns and setting in one group steel column inside multiple push mechanism, two steel columns are installed with laminated glass body and sound insulation board body between another steel column inside setting up multiple groups for clamping frame and forming frame's elastic clamping mechanism, the frame is installed in the outer periphery of laminated glass body, and the forming frame is installed in the outer periphery of sound insulation board body. The utility model discloses through setting up the push mechanism and elastic clamping mechanism of frame or forming frame both sides, utilizes the adjustment of the tensioning wire on push mechanism, can drive frame or forming frame to produce displacement, carries out replacement and tightens the limit. The operation flow can realize the convenient replacement of laminated glass or sound insulation board, significantly optimizes the dismounting and replacement step, improves the replacement efficiency.

The application relates to a sound barrier and a vehicle, the sound barrier being used for the vehicle, the sound barrier comprising a screen body and a connecting device, the screen body being used for covering at least part of a vehicle body; the connecting device comprising a first connecting component and a second connecting component, one of the first connecting component and the second connecting component being connected with the screen body, the other of the first connecting component and the second connecting component being connected with the vehicle body, and the first connecting component and the second connecting component being connected with each other to mount the screen body on the vehicle body. The screen body is mounted on the vehicle body through the connecting device, the vehicle-mounted deployment of the sound barrier is realized, the construction difficulty and construction cost are reduced, and the interference on the urban landscape is reduced.

The utility model relates to the field of sound barrier installation especially detachable sound barrier pre -buried connecting sleeve, technical scheme: detachable sound barrier pre -buried connecting sleeve, including pre -buried base, pre -buried shell, anchor plate and pre -buried sleeve, the upper end center of pre -buried base is fixed with pre -buried screw rod, the outer wall of pre -buried shell is provided with thread layer, the outer wall of pre -buried shell is opened and is provided with two groups of first through -hole of left and right symmetry distribution, the utility model discloses through pre -buried shell and first through -hole can avoid the concrete of pouring the pre -buried sleeve and pre -buried screw rod fixed lock of thread connection to reduce the influence that concrete deck receives in the process of dismounting pre -buried sleeve, and the pre -buried base, pre -buried sleeve and anchor plate of thread connection of thread connection, then can be convenient for subsequent user to the convenience of maintaining sound barrier, solved the problem that the existing sound barrier pre -buried connecting sleeve is inconvenient to dismount when using, and can easily cause greater damage to concrete deck.

The utility model provides a sound barrier foundation, the utility model belongs to sound barrier field, include: foundation base group, the both sides of steel structure are provided with a foundation base group respectively, every foundation base group includes: a plurality of foundation base, a plurality of foundation base equal interval set up on the concrete and all are connected with steel structure, every foundation base includes: upper seat, upper seat is used for connecting with steel structure, embedded bolt group, one end is inserted in the concrete, and the other end is connected with upper seat. Purpose at to solve the problem of insufficient stability of sound barrier foundation structure in prior art. The technical effect reached is: realize the sound barrier foundation of relatively stable.

The utility model discloses a combined sound barrier mounting support and combined sound barrier, solve the technical problem that there is larger gap between stand and sound absorption board and rainwater gathers in the dead angle of sound absorption board bottom in prior art. The mounting support includes the support structure of interval arrangement, still includes the drainage sound absorption structure of interval arrangement, and every drainage sound absorption structure is installed between two adjacent support structures and is located below the sound absorption component, the support structure includes the support mechanism of opposite setting, the support mechanism includes stand and base, the cross section of stand is T shape, two strip through -holes are equipped on the base, the cross section of drainage sound absorption structure is inverted U shape, is equipped with first drainage hole on the top surface, is equipped with sound absorption hole on the side. The combined sound barrier includes the sound absorption component of interval arrangement, still includes the combined sound barrier mounting support of above, and every sound absorption component is installed between two adjacent support structures and is located above the drainage sound absorption structure.

The application provides an optimal installation method and system of an active control noise reduction sound barrier, and belongs to the technical field of noise control.The active control noise reduction sound barrier comprises a source noise reduction module and a sound barrier, the method blocks the propagation path of a noise sound field through the sound barrier to form a sound shadow area, and the noise sound field is a primary sound field; the primary sound field is gathered at the top of the sound barrier to form a new diffraction sound source; the active noise reduction module is arranged at the top of the sound barrier to emit anti-sound to reduce the diffraction sound emitted by the diffraction sound source, and the area of the sound shadow area is enlarged to form an interference area; the enlarged sound shadow area and the formed interference area are superposed to form a noise reduction area after the noise reduction effect is superposed. The application overcomes the shortcomings of limited noise reduction effect of a traditional passive noise reduction measure on low-frequency noise and the insufficient low-frequency noise attenuation capacity of limited geometric size, so that the overall noise reduction performance of the sound barrier is improved.

The utility model discloses a device for elevated bridge sound barrier installation, including base, the top of base is fixed with support, be equipped with the hoist mechanism for driving sound barrier and landing in vertical direction on the support, the sound barrier of existing is inconvenient with the alignment of installation groove when installing, the utility model discloses through installing the positioning leaning board on the side of base, when moving base is close to two barrier installation columns, can make sound barrier fast positioning to the vertical plane of with installation groove coincidence through the surface of two barrier installation columns of the positioning leaning board abutting, realize the preliminary positioning of sound barrier, through the setting of base surface horizontal correction mechanism, after completing the preliminary positioning of sound barrier, can drive two push -board each other far away and abut in the inside of two barrier installation columns through drive mechanism, realize the secondary positioning of sound barrier, thereby make the lifting mechanism when driving sound barrier drops, and sound barrier can accurately insert into the installation groove.

The application provides a damping and noise reduction device for a floating buoy sonar and belongs to the technical field of damping and noise reduction. The device solves the problem of double interference of floating buoy platform vibration and self-noise and flow noise, which leads to low signal-to-noise ratio, poor precision and poor environmental adaptability of the vector sonar detection, and the limited effect of the existing single damping or noise reduction means. The damping and noise reduction device comprises a fairing, a sound barrier and a sonar fairing, the vector sonar array is arranged in the sonar fairing, the sound barrier is arranged above the sonar fairing, the fairing is connected above the sound barrier, the damping disc is arranged in the cavity formed by the sound barrier and the fairing, the damping disc is connected with the cable, the cable is connected with the buoy, the sound barrier comprises a circular assembly and a plurality of spherical assemblies, the circular assembly is connected with the sonar fairing, and the plurality of spherical assemblies are arranged on the outer side of the circular assembly in the circumferential direction. The device is mainly used for damping and noise reduction of the floating buoy sonar.

This application discloses a positioning device and construction method for pre-embedded steel plates used in the fixing of sound barriers. The positioning device for pre-embedded steel plates includes a support rod and an adjusting frame. The support rod is connected to pre-embedded parts on the highway, and an installation steel plate is fitted onto the support rod. The adjusting frame is placed on the side formwork and has at least three sets of height adjusting components. The movable end of each set of height adjusting components is connected to the installation steel plate. The support rod has a limiting component, which is used to lock the position of the installation steel plate after the height adjusting components have adjusted the position of the installation steel plate. The support rod facilitates the determination of the position of the installation steel plate on the horizontal plane. Subsequently, the height position and levelness of the installation steel plate are adjusted by the height adjusting components. Finally, the limiting component locks the installation steel plate onto the support rod, reducing the possibility of displacement of the installation steel plate position due to subsequent pouring construction, thereby maximizing the positional and horizontal accuracy of the installation steel plate.

The application relates to a traffic engineering sound barrier mounting structure and belongs to the technical field of traffic engineering, which comprises a lime crash barrier, the top of the lime crash barrier is provided with a plurality of H-shaped steel columns, a frame body is slidably connected between two H-shaped steel columns, a transparent sound insulation board is arranged in the frame body, and louvered sound absorption boards are arranged on the two sides of the frame body. The H-shaped steel column, the frame body, the louvered sound absorption board and the back plate and other components are small in size and light in weight, do not need to rely on large hoisting equipment, can be manually or by small tools, are especially suitable for complex terrains such as mountains and river channels, and are firmly connected to the lime crash barrier through fixing bolts during installation, and then the louvered sound absorption board, the back plate and the frame body and other components are slidably clamped between the two H-shaped steel columns, the requirement for the construction space is greatly reduced, the construction flexibility is improved, and the transportation and installation costs are reduced.

The utility model discloses an adjustable highway sound barrier relates to sound barrier technical field, including vertical positioning frame, the inner wall movable insertion of vertical positioning frame has from below and upwards laminated first combination barrier and second combination barrier, and the contact end movable joint of first combination barrier and second combination barrier, first combination barrier includes positioning board and turnover board. The utility model discloses through the positioning board and turnover board of first combination barrier can rotate around axle rod, can arrange vertically up and down, form conventional sound barrier structure, satisfy general noise reduction demand, can also stack in front and back, form thickening structure, when facing high noise road section or special noise environment, can effectively improve the noise reduction effect. Meanwhile, first combination barrier and second combination barrier also can be adjusted through movable joint, and this kind of multi -mode adjustment function makes sound barrier can according to different highway environment, noise intensity factor, adjusts structure flexibly.

The utility model relates to noise protection equipment technical field, specifically disclose a kind of spliced anti-falling sound barrier, including support rod, rolling ball, limit block and height adjusting part, the double limit of rolling ball is realized by trapezoidal block and rolling groove in limit block and utilizes the rolling effect of rolling ball to buffer, prevent sound barrier from falling;Adjacent limit block is fixed using screw rod, and quick splicing is realized;Scissor type telescopic stand is adjusted height in cooperation with guide slide, the design has the advantages of convenient installation, high stability, strong adaptability etc., is applicable to the place, such as road, bridge, and needs the place of noise reduction.

The application discloses a rail transit ground line noise-reducible trackside integrated system, which is characterized by comprising a plurality of base structures arranged along the extension direction of the track, wherein each base structure is provided with a pre-embedded part; a stand is connected to each pre-embedded part, a cross beam is arranged at the top of the stand, and a dispersing platform walkway board is arranged on the cross beam; a plurality of mounting hole groups are arranged on at least one side of the stand, and a cable bracket is arranged on part or all of the mounting hole groups; a sound barrier screen body is vertically arranged between two adjacent stands, and the sound barrier screen body is transversely arranged between two adjacent cross beams. The application adopts an integrated, standardized, modular and prefabricated design scheme, saves installation space, improves construction and installation efficiency, reduces operation and maintenance cost, and saves the cost of the trackside system.

The utility model relates to high -speed railway road sound barrier technical field, concretely is a kind of high-speed railway road sound barrier with wind -guiding structure, the lower portion of stand is equipped with rigid pedestal one, and rigid pedestal one and stand are inlayed connection, the rear end of adjusting swivel rod is rotatably connected in adjusting swivel rod, the upper portion of adjusting swivel rod is equipped with adjusting nut, and adjusting nut and adjusting swivel rod are welded, the middle portion of adjusting swivel rod is equipped with fastening nut, and fastening nut and adjusting swivel rod are threadedly connected, the lower portion of adjusting swivel rod is equipped with support rod;Beneficial effect is: stand realizes length adjustment by adjusting swivel rod in the telescopic support rod, after fastening nut locking, and rigid pedestal two form triangular support structure, enhance wind load capacity;Air deflector realizes airflow self-adapting deflection by return spring, and air deflector gap formed by cooperation connecting rod effectively reduces wind pressure, simultaneously sound-absorbing board has noise reduction function, and overall structure gives consideration to stability and functionality.

The utility model belongs to the field of sound barrier, concretely relates to a modularization sound barrier structure of noise treatment, including a plurality of stand and a plurality of sound barrier unit board of sliding connection between adjacent stand, mutual contact between adjacent sound barrier unit board, the inboard fixed connection of stand has a plurality of support block, the upper end of each support block all is fixedly connected with the plug -in column, the left and right sides of sound barrier unit board all are fixedly connected with the side plate. The utility model discloses the quick installation and dismounting of sound barrier unit board are realized through the sliding fit of plug -in column and bush, has improved construction efficiency, and sets up the steel wire rope in the inside of sound barrier unit board simultaneously, and the steel wire rope is set up and is penetrated unit board, when sound barrier unit board is impacted, using steel wire rope and the relative rotation of bush and plug -in column can effectively improve the impact resistance of sound barrier unit board.