807results about "Noise reduction construction" patented technology

The embodiment of the invention discloses a noise reduction regulation and control method and device for a self-adaptive sound barrier and a medium, and relates to the technical field of noise reduction, and the method comprises the steps: collecting multi-source vehicle noise data which comprises current sound pressure signal time sequence data, preposed sound pressure signal time sequence data and preposed vehicle point cloud data, according to the front sound pressure signal time sequence data and the front vehicle point cloud data, determining a noise source position prediction result corresponding to a sound barrier front node so as to perform sound field prediction on the sound barrier node, and determining a corresponding sound field energy distribution thermodynamic diagram; according to a preset sensitive frequency band threshold value, a target noise high-frequency band needing to be offset is determined in the sound field energy distribution thermodynamic diagram, so that a reverse sound wave signal corresponding to a phase array offset module is generated, and the target noise high-frequency band is offset; and according to the current sound pressure signal time sequence data and the reinforcement learning strategy, determining dynamic sound absorption regulation and control parameters of the dynamic sound absorption module so as to absorb a low-frequency band.

The invention relates to the technical field of sound absorption, noise reduction and impact resistance, in particular to a multifunctional tunable bionic sound absorption and collision prevention integrated superstructure and a preparation method thereof.The multifunctional tunable bionic sound absorption and collision prevention integrated superstructure comprises a shell, an upper sound absorption layer, a lower sound absorption layer and a middle collision prevention layer, the sound absorption layer is provided with a plurality of curved-surface microwell plates which are connected end to end to form a cavity, and the embedded pipe is combined with the cavity to form a Helmholtz resonator; the anti-collision layer is composed of an energy absorption unit array. The preparation method comprises the steps that a three-dimensional model is firstly built, then a laser scanning mode and parameter printing are set, then heat treatment is conducted, then cutting and layer taking are conducted, and finally the superstructure is manufactured through glue joint. The sound absorption and noise reduction functions and the energy absorption and anti-collision functions are integrated, the sound absorption performance is improved through the bionic structure, energy is efficiently absorbed through the middle layer dot matrix, adjustable performance and lightweight design are achieved through parameterized design, the additive manufacturing process is simple, convenient and efficient, and large-scale production and application are facilitated.

The invention discloses an integrated photovoltaic sound barrier which comprises a single-face power generation photovoltaic sound barrier module, a sound barrier interaction module and a double-face power generation photovoltaic sound barrier module. The structures of the single-sided power generation photovoltaic sound barrier module, the sound barrier interaction module and the double-sided power generation photovoltaic sound barrier module are constructed to be stacked up and down to form a photovoltaic sound barrier body, so that full-frequency noise within the range of 200Hz-2000Hz is effectively absorbed. According to the photovoltaic sound barrier, the photovoltaic power generation function and the sound absorption and insulation noise reduction function of the photovoltaic sound barrier are integrated, through modular design and stacking assembly, the use area and the power generation efficiency of a photovoltaic assembly are effectively improved, the sound absorption frequency band is widened, and the noise reduction effect is improved.

The present invention relates to a noise barrier wall panel that is lighter and more structurally sound than existing concrete noise barrier wall panels. The panel has a metal frame that is reinforced via metal strapping in key areas to prevent sagging. The panel has a plurality of layers forming a laminate that can be fixedly attached to the frame. A finish coating layer may have a plurality of designs, logos, symbols, or textures which may mimic building materials or scenery.

The invention provides a production method of a road sound barrier with light weight, high strength, corrosion resistance and strong sound absorption, and belongs to the technical field of road sound barriers, the production method comprises the following steps: collecting a traffic noise sample by using a high-precision microphone array, extracting noise spectrum characteristics by using a Noi seSpecNet model, and determining that the main noise frequency band is 500-4000 Hz; optimal perforation parameters are calculated through the model; accurately perforating the UHPC board according to the optimized parameters; the perforated UHPC board, basalt fiber cloth, a through-hole ceramic board, a sound insulation felt and other materials are bonded according to the sequence and technology to form a multi-layer composite structure; curing and curing in a constant-temperature and constant-humidity environment; carrying out acoustic performance testing; and finally, the qualified sound barrier unit is installed on a foundation structure and subjected to protection treatment. According to the method, the technical problem that a road sound barrier in the prior art is difficult to realize efficient sound absorption for traffic noise of a specific frequency band is solved.

The utility model discloses a road bridge noise reduction device of road bridge engineering, and relates to the technical field of road bridge sound insulation, the road bridge noise reduction device comprises a base (1) and a sound insulation layer (4), the base (1) is provided with an installation frame (2), the two sides of the installation frame (2) are respectively provided with a convex block (3) and an inlet opening (22), the installation frame (2) is of a concentric-square-shaped structure, the inner side of the installation frame (2) is provided with an installation groove (21), and the installation groove (21) is provided with a sound insulation layer (4). The sound insulation layer (4) is arranged in the mounting groove (21) through the inlet opening (22), a fixing mechanism (5) is arranged at the end, close to the inlet opening (22), of the mounting frame (2), the fixing mechanism (5) is attached to the sound insulation layer (4), and the problems that an existing sound reduction device is generally of an integrated structure, the occupied space is large, and the manufacturing cost is high are solved. And once the device is damaged, the device is difficult to overhaul or disassemble and assemble.

The invention discloses a wind power generation sound barrier, and relates to the technical field of sound-absorbing barriers, and the wind power generation sound barrier comprises a sound barrier which is used for being installed beside an external road and used for absorbing noise generated by motor vehicle driving; a plurality of groups of sound barriers can be spliced to define a length-adjustable sound absorption structure; airflow generated when a motor vehicle passes through the sound barrier drives the generator to operate and generate electricity through the driving wheel, the turbine-shaped blades are driven by the airflow generated when the motor vehicle runs to rotate, kinetic energy which is originally wasted is converted into electric energy, and energy recycling is achieved; the total length of the sound barrier and the density of the generator set can be flexibly adjusted according to the road length and the traffic flow through the combination of the spliced sound barrier unit and the multiple groups of independent power generation units (driving wheels and generators), and the requirements of different scenes are met.

The invention provides a modularized installation and construction method for a semi-closed sound barrier of a high-speed railway, and belongs to the technical field of semi-closed sound barriers of high-speed railways. Comprising a road surface, sound absorption barriers are arranged on the left side and the right side of the road surface respectively, high-precision sound pressure sensors are arranged on the inner side surfaces, close to the left side and the right side, of the sound absorption barriers respectively, and a broadband frequency analyzer is connected to the bottoms of the high-precision sound pressure sensors. A solar photovoltaic power generation function and a noise reduction function of the sound barrier are combined by arranging the photovoltaic panel on the outer side of the arc-shaped sound absorption barrier, in addition, the high-precision sound pressure sensor, the broadband frequency analyzer and the intelligent control system are fused into an intelligent monitoring sound barrier module through the intelligent technology, and a noise monitoring sensor, an environment monitoring sensor and other sensors are integrated; the noise level, the air quality, the temperature, the humidity and other environmental parameters around the sound barrier are monitored in real time, data are transmitted to the management center, and the performance state of the sound barrier and the change of the surrounding environment are known in time through data analysis.

The present invention discloses a rail transit sound barrier based on phononic crystal cells, which is divided into several cells of equal volume by dividing modules; a resonance cavity with an opening on one side is embedded in each cell; one side of the opening of the resonance cavity faces the sound source; the opening extends outward in a trumpet shape to increase the sound receiving area; several phononic crystal cells that do not contact each other are fixedly arranged in the resonance cavity; the resonance cavity in the present invention can achieve triple acoustic performance improvements, namely sound insulation, sound elimination and sound absorption: its overall appearance belongs to a Holmhelix resonance cavity, which is itself a good sound elimination device, which is the first sound elimination; the trumpet-like opening structure on the sound source side is conducive to the introduction of sound waves, and the phononic crystal cells are arranged inside, which is the second sound insulation of the device; the tail adopts a boss with the same size as the end of the trumpet mouth, which is conducive to the flow of sound waves, and a certain thickness of sound-absorbing rock wool is used on the inner wall of the tail, which is the third sound absorption.

The invention discloses a sound barrier made of a tailing material and a preparation method of the sound barrier, and belongs to the technical field of sound barriers. The sound barrier comprises a base material, a functional additive and a self-healing additive, and the base material mainly adopts tailing particles and is compounded with alumina powder, Portland cement and nano-hydroxyapatite; the functional additive is prepared from a polypyrrole-polyaniline compound, silicon dioxide nano aerogel, nano molybdenum disulfide particles and polyacrylate coated paraffin microcapsules; the self-healing additive is prepared from polyurethane coated epoxy resin microcapsules, polyurethane coated amine curing agent microcapsules, CaCO3 microcrystals, nano montmorillonite particles and nano nickel coated carbon particles. Resource utilization of the tailings is achieved, and the mechanical property, the sound absorption and insulation performance, the self-healing performance and the weather resistance of the sound barrier are remarkably improved.

The utility model relates to the technical field of sound barriers, in particular to a sound barrier with a protection mechanism, and adopts the technical scheme that the sound barrier with the protection mechanism comprises stand columns, a barrier plate, grooves, convex blocks, a protection plate and first anchoring holes; three barrier plates which are arranged from top to bottom are arranged between the two stand columns which are opposite in the left-right direction, grooves are formed in the stand columns, the left sides and the right sides of the barrier plates are fixedly connected with protruding blocks matched with the grooves, the front portions and the rear portions of the stand columns are each provided with two protection plates located at the joints of the barrier plates, and four first anchoring holes are formed in each protection plate. According to the sound barrier, an existing sound barrier is improved, the protection plates located on the front side and the rear side of the joint of the barrier plates are additionally arranged on the stand columns, the protection plates are tightly attached to the joint of the barrier plates, the joint of the barrier plates is protected, the phenomena of air leakage and sound leakage at the joint of the barrier plates can be prevented, and the noise reduction efficiency of the sound barrier is improved.

The utility model discloses a sound barrier structure arranged back to a noise source, which comprises a T-shaped device body, the top end of the device body is provided with a sound absorber structure, the sound absorber structure comprises a plurality of tip sound absorbers which are arranged in sequence, each tip sound absorber is of an isosceles right triangle structure, and the tip sound absorbers are arranged at the top end of the T-shaped device body. The first right-angle side of each tip sound absorber serves as the bottom of the tip sound absorber and is connected with the top end of the T-shaped device body, the first right-angle sides and the inclined sides are arranged in the mode that the first right-angle sides and the inclined sides do not face a noise source, namely the second right-angle sides are opposite to the noise source, and the second right-angle side of each tip sound absorber serves as the height of the tip sound absorber and is right opposite to the noise source in a vertical mode. Compared with the prior art, the sound barrier structure has the highest insertion loss value within the center frequency range of 500 Hz to 1600 Hz, so that the sound wave absorption rate is highest, and the noise reduction effect is best.

The invention discloses a sound barrier self-adaptive acoustic diffuser regulation and control method, equipment and a medium, and relates to the technical field of sound barrier regulation and control. The method comprises the steps that noise signals on the two sides of a sound barrier are collected, and traffic flow data and meteorological parameters are synchronously obtained; performing multi-scale spectrum analysis on the noise signal to obtain spectrum features; calculating a sound field coupling effect between adjacent units according to the topological connection relationship of the diffuser units; inputting the spectrum characteristics, the traffic flow, the meteorological parameters and the sound field coupling effect into a pre-trained mapping model to generate a regulation and control instruction; the diffuser units are driven to adjust geometric parameters according to the regulation and control instruction, the adjustment priority of the diffuser units is distributed, and the geometric parameters comprise the groove depth and the distance between every two adjacent units. According to the method, the wide-frequency-band noise suppression effect is improved, the sound energy transfer matrix is constructed, the insertion loss contribution rate is calculated, the priority is scientifically distributed and adjusted, and overall performance reduction caused by local optimization is avoided.

The invention provides a resonant cavity broadband sound barrier based on a double-helix acoustic black hole. The resonant cavity broadband sound barrier comprises a plurality of double-helix acoustic black hole resonant cavity broadband sound absorption structure cells and a supporting and connecting assembly. The multiple double-spiral acoustic black hole resonant cavity broadband sound absorption structure cells are connected together through the supporting and connecting assemblies, and a plate-shaped sound barrier is formed; the double-spiral acoustic black hole resonant cavity broadband sound absorption structure cell is in the shape of a hollow regular hexagon nut, the inner side face of the cell is open, and six cavities with the inner sides open are formed in the cell. Two spiral curved surface rolling plates with the same or different spiral curve parameters are arranged in each cavity; the curved surface of the spiral curved surface rolling plate is perpendicular to the upper end face and the lower end face of the double-spiral acoustic black hole resonant cavity broadband sound absorption structure cell. A plurality of protruding teeth are distributed on the inner side face and the outer side face of the spiral curved-surface rolling plate. The invention has the advantages that the broadband sound absorption characteristic is realized; certain ventilation and lighting performance is achieved, and the driving environment of an inner channel of the closed traffic sound barrier can be more comfortable.

The invention discloses a novel double-sided photovoltaic sound barrier, and relates to the field of photovoltaic technology, the novel double-sided photovoltaic sound barrier comprises two mounting parts, and a transparent ultramicro perforated panel assembly and a photovoltaic panel assembly are inserted between the two mounting parts; locking units used for synchronously locking the transparent ultramicro perforated panel assembly and the photovoltaic panel assembly are arranged on the two mounting pieces respectively, and each locking unit comprises a first locking rod and a second locking rod which are slidably connected to the corresponding mounting pieces respectively; the operation part is arranged on the mounting piece and is used for driving the first lock rod to be slidably inserted into a first lock hole formed in the transparent ultramicro perforated panel assembly and driving the second lock rod to be slidably inserted into a second lock hole formed in the photovoltaic panel assembly; an operator can lock and fix the transparent ultramicro perforated panel assembly and the photovoltaic panel assembly on the mounting piece only by one step, so that the transparent ultramicro perforated panel assembly and the photovoltaic panel assembly can be more stably mounted on the mounting piece while the operation of the operator is facilitated.

The utility model relates to a staggered and superposed wave-shaped sound barrier which comprises a base and a frame. The base is fixedly connected with the frame, and the plate body, the first wave-shaped screen body assembly and the second wave-shaped screen body assembly are sequentially installed on the inner side of the frame from front to back. Wherein the first wave-shaped screen body assembly and the second wave-shaped screen body assembly are similar in structure, each wave-shaped screen body assembly is composed of a plurality of wave-shaped sound absorption strips, and the left side face and the right side face of each wave-shaped sound absorption strip are both wave faces; the wave-shaped sound-absorbing strips in the first wave-shaped screen body assembly and the wave-shaped sound-absorbing strips in the second wave-shaped screen body assembly are arranged in a staggered manner, are overlapped with each other and then are fixedly connected with the plate body; and a wave-shaped sound barrier is formed. According to the wave-shaped sound barrier, the two layers of wave-shaped screen body structures are overlapped in a staggered mode, so that the path of sound waves is more complex when the sound waves pass through the sound barrier, the reflection, diffraction and absorption capacities of the screen bodies on noise are improved, noise energy is effectively weakened, meanwhile, the sound barrier can present rich light and shadow effects and dynamic aesthetic feeling along with changes of light rays and observation angles, and the sound barrier is more attractive. And the appearance is more attractive.

The utility model discloses a windproof and dustproof fence device for a construction site, and belongs to the technical field of fence devices. Comprising a plurality of stand columns, a base is fixedly arranged at the bottom ends of the stand columns, two positioning pieces are installed on each stand column in a threaded mode, a baffle is installed on any two stand columns through the positioning pieces in a threaded mode, each baffle comprises a rectangular frame, and one baffle can be installed through any two stand columns in an assembled mode, so that the enclosing wall structure is assembled and formed. Each baffle is composed of a rectangular frame and a corrugated plate, the corrugated plate is used for blocking wind, the corrugated plate with a plurality of noise reduction holes is used for reducing dust and noise, convex mounting grooves are formed in the rectangular frames and matched with oval grooves formed in the stand columns, and therefore water pipes can be conveniently mounted and arranged along the enclosing wall structure in a penetrating mode. Therefore, the wall structure has the functions of atomizing, spraying, dedusting and purifying the environment, and the wall structure is simple in overall structure and design, convenient to assemble, mount and dismount and high in practicability.

The utility model provides a sound insulation screen for roads and bridges, belongs to the technical field of sound insulation facilities for roads and bridges, and aims to solve the problem that the sound insulation screen is easy to be greatly impacted due to the fact that strong wind directly blows on the sound insulation screen in the prior art. Comprising a sound-proof screen body, a sound-proof top plate, sound-proof blocking pieces, wind shields, driving windmills, sound-proof cleaning mechanisms and sound-proof stabilizing mechanisms. The sound insulation top plate is fixedly connected to the upper portion of the sound insulation screen body. The sound insulation blocking pieces are fixedly connected to the front portion of the sound insulation top plate. The wind shield is rotationally connected to the upper portion of the inner side of the sound insulation screen body. The cleaning limiting sliding grooves are formed in the upper end and the lower end of the inner side of the sound insulation screen body correspondingly. The driving windmills are rotationally connected to the upper end of the rear portion of the sound insulation screen body. The sound insulation cleaning mechanism is arranged in the sound insulation screen main body; the sound insulation stabilizing mechanism is arranged at the upper end of the rear portion of the sound insulation screen body, impact of strong wind on the sound insulation screen is reduced, and the installation stability of the sound insulation screen is guaranteed.

The invention discloses a trough beam structure capable of separating pedestrians from vehicles, belongs to the field of bridge engineering, and solves the problems that the clearance below a bridge is difficult to meet the flood discharge requirement after the bridge is level-crossed with a dike, the noise and tail gas pollution of a motor vehicle lane is serious, and the pedestrian experience feeling is poor. A groove-shaped beam is of a groove-shaped structure formed by a bottom plate and web plates on the two sides of the bottom plate, cantilever plates are arranged on the two sides of the groove-shaped beam respectively, and bridge railings are arranged on the outer sides of the cantilever plates; the bottom plate is used for arranging a motorway, and the cantilever plate is used for arranging a sidewalk. By adopting the through channel beam structure and the cantilever slab overhanging structure, the height of the bridge building is effectively reduced, navigation and flood discharge clearance under the bridge are ensured, and roads on two banks do not need to be lifted; the webs on the two sides of the channel beam are used for conducting hard isolation on the sidewalk and the motorway, separation of people and vehicles is achieved, intersection possibly existing between a slow pedestrian space and the motorway is avoided, potential safety hazards are reduced, and noise and tail gas are isolated.

The invention discloses an ultra-wide-band noise reduction and bearing function integrated metamaterial structure sound barrier. The ultra-wide-band noise reduction and bearing function integrated metamaterial structure sound barrier comprises a multifunctional integrated screen body and a porous metamaterial sound absorber. The multifunctional integrated screen body comprises a composite non-uniform hollowed-out plate and a cavity, the composite non-uniform hollowed-out plate is arranged at the open end of the cavity, and partition plates are arranged in the cavity to divide the cavity into a plurality of sub-cavities; the porous super-structure sound absorber comprises a plurality of high-porosity sound absorption media arranged in the corresponding sub-cavities, and sound wave regulation and control channels are formed in the high-porosity sound absorption media. The metamaterial structure sound barrier is applied to the field of acoustic noise reduction, the metamaterial structure sound barrier can obtain low-frequency and ultra-wide-band efficient sound absorption performance, the overall rigidity of the sound barrier is improved, the longitudinal supporting area of the sound barrier is increased, the ultra-wide-band sound insulation performance of the sound barrier is greatly improved, meanwhile, the bearing capacity of a sound barrier body is greatly improved, and the noise reduction effect is good. The integration of the ultra-wideband efficient noise reduction performance and the high bearing function of the sound barrier with the metamaterial structure is realized.

The invention discloses a photovoltaic sound barrier panel and a photovoltaic module, and relates to the technical field of photovoltaic modules, the photovoltaic sound barrier panel comprises a vertical sound barrier frame, a supporting frame body, a photovoltaic power generation array and a guide rail transmission mechanism, the photovoltaic power generation array is arranged in the sound barrier frame, the vertical installation adaptability of the photovoltaic power generation array to linear scenes such as roads and railways is reserved, and the photovoltaic power generation array can be installed on the sound barrier frame. The arrangement area of a photovoltaic panel array is greatly expanded through a folding and array structure of a photovoltaic power generation array, and multi-dimensional utilization of sunlight is realized by matching with the design of an openable photovoltaic integrated cavity and a light guide window of a back noise panel; the condensation reflecting plate and the arc-shaped protrusion of the back noise panel gather back side scattered light and then introduce the light through the window, so that the photovoltaic panel array can dynamically adjust the angle to receive illumination in the optimal posture, and the power generation efficiency is greatly improved compared with a traditional fixed vertical installation mode.

The utility model discloses a cadmium telluride power generation glass sound barrier which comprises a base frame, the base frame is of a U-shaped structure, movable grooves are formed in the inner walls of the two sides of the base frame, a lower sound insulation plate is arranged at the lower end in the base frame, a plurality of upper sound insulation plates are installed on the inner side of the base frame above the lower sound insulation plate, and movable blocks are arranged on the outer walls of the two sides of the upper sound insulation plates. A plurality of locking bolts are installed on the outer surfaces of the two sides of the base frame, one ends of the locking bolts penetrate through the base frame and are in threaded connection with the surfaces of the movable blocks, bottom frames are arranged on the two sides of the bottom end of the base frame, two L-shaped positioning bases are arranged on the outer walls of the bottom frames, and first cadmium telluride power generation glass is installed on the outer wall of one side of the lower sound insulation plate. Second cadmium telluride power generation glass is installed on the outer wall of the side, away from the first cadmium telluride power generation glass, of the lower sound insulation plate. According to the utility model, the purpose that the sound barrier is easy to replace and maintain is achieved, the energy utilization efficiency is improved, and the stability of the sound barrier in use is improved.

The invention discloses a sound barrier auxiliary rapid installation tool and method, and relates to the technical field of sound barrier plate installation. Comprising a telescopic joint, a rotary hoisting head arranged at the top of the telescopic joint, telescopic rods arranged at the two ends of the telescopic joint and protection devices arranged at the two ends of the telescopic rods and used for clamping rubber strips at the ends of a sound barrier screen body or supporting the screen body, and the protection devices completely cover and protect the rubber strips. And the screen body cannot be blocked by the rubber strip and can be smoothly lowered, so that the rubber strip can be prevented from being damaged, and the screen body can be smoothly mounted.

The invention relates to a road sound insulation board for traffic engineering, and belongs to the technical field of road sound insulation boards, the road sound insulation board comprises a mounting base, a sound insulation board body is detachably connected to the top of the mounting base, silencing holes are formed in the surface of the sound insulation board body, and a water storage cavity is formed in the sound insulation board body. According to the green plant pot and the first spraying pipe, when sound insulation operation is conducted on a road through the road sound insulation board, in order to improve the multifunctionality of the sound insulation board in daily use and achieve the multiple noise reduction effect on road noise, a planting rod is turned over to be in a horizontal state, and the green plant pot is placed outside the planting rod; a first spraying pipe is opened to spray green plants, meanwhile, a control valve outside a connecting pipe is opened, a municipal water source is conveyed into a water storage cavity under the formation of a circulating opening, a sound insulation means is added in a sound insulation plate, and multiple noise reduction operation is performed on noise under the sound insulation condition of the sound insulation plate; and the aesthetic effect of the sound insulation plate in daily use is increased.

The invention discloses a sound barrier rapid installation structure, system and installation method, and relates to the technical field of sound barrier installation, and the sound barrier rapid installation structure comprises a pressing plate base and a buckle pressing plate. The pressing plate base is in a long strip shape and provided with a mounting groove extending in the length direction of the pressing plate base. An opening extending in the length direction is formed in one side of the mounting groove; the buckle pressing plate comprises a pressing plate and a buckle; two side edges in the width direction of the pressing plate are used for respectively pressing the outer side surfaces of two adjacent screen bodies; the lower side of the pressing plate is fixedly connected with a buckle extending in the length direction of the pressing plate. Blocking parts protruding inwards are arranged on one or two inner side walls, in the width direction, of the mounting groove, and matching parts protruding outwards are arranged on one or two outer side walls, in the width direction, of the buckle; and the buckle can be inserted into the mounting groove through the opening. The method has the advantages of being high in construction efficiency, few in installation materials, low in cost, free of material falling risks, free of maintenance in the later period, capable of reducing accident disputes and the like.

The invention discloses a sound barrier sealing system, a metal screen body, a transparent screen body and a sound barrier system, and relates to the technical field of sound barrier sealing, the sound barrier sealing system comprises a first sealing joint, a second sealing joint, a third sealing joint and a pressing plate, the first sealing joint is integrally formed by the metal wall face of the metal screen body, and the second sealing joint is integrally formed by the metal wall face of the transparent screen body; the edge of the top extends outwards to form a first baffle; the second sealing joint is provided with a clamping groove and a second baffle plate; the clamping groove is used for inserting and clamping the edge of the transparent screen body; the third sealing joint is provided with a clamping groove and a third baffle, the clamping groove is used for allowing the edge of the transparent screen body to be inserted and clamped, and the third baffle is used for being in lap joint with the lower surface of the other adjacent transparent screen body; the pressing plate is detachably arranged on the cross beam, and the edge of the pressing plate in the width direction is used for being in lap joint with the upper surface of the metal screen body and / or the transparent screen body. According to the invention, all nodes in the totally-enclosed sound barrier system are designed, the purpose of waterproofing gaps at all nodes is achieved, and the waterproof effect is good.

The utility model discloses a trough beam structure capable of separating pedestrians from vehicles, belongs to the field of bridge engineering, and solves the problems that the clearance below a bridge is difficult to meet the flood discharge requirement after the bridge is level-crossed with a dike, the noise and tail gas pollution of a motor vehicle lane is serious, and the pedestrian experience feeling is poor. A channel beam is of a channel structure formed by a bottom plate and web plates on the two sides of the bottom plate, cantilever plates are arranged on the two sides of the channel beam respectively, and bridge railings are arranged on the outer sides of the cantilever plates. The bottom plate is used for arranging a motorway, and the cantilever plate is used for arranging a sidewalk. By adopting the through channel beam structure and the cantilever slab overhanging structure, the height of the bridge building is effectively reduced, navigation and flood discharge clearance under the bridge are ensured, and roads on two banks do not need to be lifted; the webs on the two sides of the channel beam are used for conducting hard isolation on a sidewalk and a motorway, separation of people and vehicles is achieved, potential safety hazards are reduced, and noise and tail gas are isolated.

The utility model belongs to the technical field of mounting brackets, and discloses an adjustable bracket for a photovoltaic isolation barrier, which comprises two pile foundations, the tops of the two pile foundations are connected with a foundation, the foundation is provided with a mounting groove, an abutting ring is arranged in the mounting groove, the lower side of the abutting ring and the inner bottom of the mounting groove form a gear cavity, and the gear cavity is connected with the foundation. A stand column is placed in the mounting groove, a sliding groove is formed in the side of the stand column, a lead screw is rotationally installed in the sliding groove, a first bevel gear is installed at the lower end of the lead screw, the lead screw is sleeved with an upper frame fixing block, the lead screw is in threaded connection with a lower frame fixing block, and the upper frame fixing block and the lower frame fixing block are each provided with a fixing hole. A flange is integrally arranged at the bottom of the lower frame fixing block; and a rotating rod is rotationally installed in the gear cavity, the power end of the rotating rod is connected with a hand wheel, the rotating rod is provided with a second bevel gear, the end of the rotating rod is integrally connected with a hexagonal column, and the hexagonal column is sleeved with a hexagonal barrel.

The utility model relates to the technical field of acoustic boards, in particular to an acoustic board for an elevated frame, which comprises a base, two mounting insertion holes are arranged on one side of the base, and two U-shaped mounting frames are clamped on the outer surface of the base. The acoustic board for the elevated frame has the advantages that the acoustic board for the elevated frame is divided into a plurality of parts through matched arrangement of the base, the mounting insertion hole, the U-shaped mounting frame, the connecting plate, the mounting bolt, the U-shaped adjusting shell, the adjusting bolt, the first fixing insertion hole, the lifting rod, the adjusting insertion hole, the second fixing insertion hole, the acoustic board and the acoustic board fixing structure; the volume occupied by the acoustic board for the elevated frame during transportation is reduced, transportation operation is facilitated, the appropriate number of acoustic boards can be selected according to the actual situation during use, the height of the lifting rod is adjusted, the acoustic boards are easy and convenient to mount and dismount, and the acoustic board is convenient to use. Therefore, the acoustic board for the elevated frame can meet the requirement for sound insulation operation at a large height.

The utility model relates to the technical field of sound barriers, in particular to a photovoltaic street lamp and sound barrier integrated structure which comprises a support, a plurality of stand columns, purlines and partition plates, the stand columns are evenly arranged, the purlines are connected between the tops of every two adjacent stand columns, and the partition plates are connected between the bottoms of every two adjacent stand columns. The barrier mechanism comprises a barrier plate and a barrier support connected with the stand columns and used for fixing the barrier plate. The lamp mechanism comprises a lamp pole connected with one end of the stand column and a lamp assembly connected with the other end of the stand column. And the photovoltaic panel is fixedly connected with the purline. The photovoltaic panel, the lamp mechanism and the barrier mechanism are integrated, the photovoltaic panel is fixedly connected with the purline, the street lamp is installed on the stand column, and the barrier support and the stand column fix the barrier plate, so that the complexity that the photovoltaic street lamp and the sound barrier are installed separately is simplified, and the trouble that spaces are reserved for the street lamp and the sound barrier separately is avoided; the design and construction efficiency is effectively improved, and a more appropriate solution is provided for application in a space-limited area.