4905results about "Sound proofing" patented technology

The utility model belongs to the technical field of stone curtain walls, discloses a dry-hanging stone curtain wall convenient to maintain, and aims to solve the problems proposed in the background technology, the following scheme is proposed: the dry-hanging stone curtain wall comprises galvanized steel plates which are fixed on a mounting wall surface at equal intervals, and four corners of each galvanized steel plate are respectively provided with a cross-shaped adjusting groove in a penetrating manner; and a fixing hanging frame is welded to the outer wall of the middle of the galvanized steel plate, a first circular through groove is formed in the outer wall of the fixing hanging frame in a penetrating mode, and a corner connector is fixedly connected to the inner wall of the fixing hanging frame in an inserted mode. According to the overall firmness of the keel frame, the keel frame is matched with expansion bolts at the four corners of a galvanized steel sheet for stress reinforcement, inclined upward pulling force is arranged on the back face of the square tube keel frame for reinforcement, the overall stability of the keel frame is improved, and the connection between the square tube keel frame and the transverse keel frame is firm. And stress reinforcement is carried out by adopting double modes of insertion connection and bolt fixation, so that the overall safety of the stone curtain wall can be improved.

Systems and devices are disclosed herein for absorbing unwanted target sounds. In one example, an acoustic scatterer for absorbing a target sound includes a housing defining a plurality of channels having an open end and a terminal end. The terminal ends of the plurality of channels are separate from each other and extend along a length of the housing. The acoustic scatterer also includes one or more spacers subdividing the plurality of channels along the length of the housing. In another example, a system for absorbing a target sound includes a plurality of acoustic scatterers, each having a housing that defines a plurality of channels having an open end and a terminal end. The terminal ends of the plurality of channels are separate from each other and extend along a length of the housing. The plurality of acoustic scatterers are stacked on top of each other in a lengthwise direction.

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 utility model relates to the technical field of building materials, in particular to an assembly type PC wallboard structure which comprises two butt-joint openings symmetrically formed in the bottom end of a wallboard body, two clamping plates are symmetrically arranged in the butt-joint openings, sliding columns in sliding connection with the wallboard body are fixedly connected to the side walls of the two clamping plates, and the side walls of the two clamping plates are fixedly connected with the bottom end of the wallboard body. The top of the wallboard body is symmetrically and fixedly connected with one ends of two connecting columns. According to the wall board, the two T-shaped blocks on the top of the wall board body are inserted into the grooves in the bottom end of the other wall board body, when the T-shaped blocks abut against the inclined plane portions of the clamping plates in a sliding mode, the clamping plates can abut against the two sides by a certain distance, and then the clamping plates are rapidly reset under extrusion of the reset springs; the T-shaped block can be clamped and positioned through the two clamping plates, so that the T-shaped block can be limited through the butt joint opening in the bottom end of the wallboard body and the cover plate, the PC wallboard can be quickly assembled, and the assembling efficiency of the PC wallboard is improved.

The utility model relates to a modular building connecting node easy to assemble, which comprises a plurality of modules needing to be assembled mutually and connecting components used for connecting the modules, a box type node connecting box is arranged on the splicing corner of each module, bolt holes and positioning holes are respectively arranged on the splicing surface of the node connecting box, and the bolt holes and the positioning holes are connected with the connecting components. The other face of the node connecting box is further provided with an operation opening penetrating through an inner cavity of the node connecting box. The connecting assembly comprises a connecting plate and a positioning insertion block, a bolt hole and a positioning hole are formed in the connecting plate, and the positioning insertion block is inserted into the positioning hole of the connecting plate; connecting assemblies are arranged between the mutually-spliced modules, the two ends of the positioning inserting blocks are embedded into positioning holes of the joint connecting boxes on the mutually-spliced modules respectively, and the connecting plates and the mutually-spliced modules are fixedly connected through high-strength bolts. The module has the advantages that the module is convenient to hoist and align and easy to assemble, the assembling efficiency of a modular building can be improved, and a good sound insulation effect can be achieved.

The invention relates to the technical field of intelligent construction, in particular to an ultra-low energy consumption building structure based on light materials and an intelligent construction method.The ultra-low energy consumption building structure based on the light materials comprises an outer wall and a window, the outer wall is composed of a structural layer, a heat insulation layer, a waterproof layer, a heat preservation layer, a decoration layer and a plate buckle structure and used for heat preservation, heat insulation and control of indoor and outdoor heat exchange, and the window is composed of a window frame, glass and sealing strips. The fresh air heat recovery system is used for optimizing a heat transfer path, reducing heating, refrigeration and ventilation energy consumption of a building, preventing moisture from invading a room and avoiding wall mildew and structural damage, and the fresh air heat recovery system is composed of a heat exchange system, a power system, a filtering system, a box body and a control system and is used for ventilation, air exchange, air purification and indoor environment adjustment, so that the energy consumption of an air conditioning system is reduced, and the energy consumption of the air conditioning system is reduced. The energy-saving technology of light materials is adopted, energy consumption and carbon emission are reduced, the intelligent construction scheme is adopted, the construction period is shortened, and the construction cost is reduced.

To provide a sound insulation sheet member which is excellent in sound insulation performance in a low frequency band and which has a compact configuration. A sound insulation sheet member 1 including a substrate 2 and a concavo-convex structure 3 placed on at least one surface of the substrate 2, in which the concavo-convex structure 3 is provided by repeatedly arranging a plurality of units each defined as a concavo-convex unit shape 4 including a linear convex portion 5, in one direction at substantially constant intervals on the surface of the substrate 2.

The utility model provides a noise reduction and sound insulation assembly convenient to replace, relates to the technical field of sound insulation plates, and solves the problems that when the noise reduction and sound insulation assembly is applied to some temporary noise reduction and sound insulation positions, the noise reduction and sound insulation assembly often needs to be disassembled and assembled for multiple times, but the noise reduction and sound insulation assembly is inconvenient to replace after being disassembled for multiple times. The noise reduction and sound insulation assemblies collide with one another, so that sound insulation parts of the noise reduction and sound insulation assemblies are damaged, and the service life of the noise reduction and sound insulation assemblies is affected. The noise reduction and sound insulation assembly convenient to replace is characterized in that a connecting frame is mounted at the top of a protective frame; through the arrangement of a protective layer and a barrier layer, the noise reduction and sound insulation assembly is protected through the cooperation of the protective layer and the barrier layer, and when the protective layer and the barrier layer are excessively damaged and cannot be normally used, a fixed insertion block top plate can be separated from a fixed insertion groove, so that the limitation of a connecting frame is relieved, and the protective layer and the barrier layer on the connecting frame are replaced; therefore, the noise reduction and sound insulation assembly can be repeatedly used, and the service life is effectively prolonged.

The utility model relates to the technical field of heat preservation buildings, and provides an integrated energy-saving heat preservation building structure which comprises a non-dismantling formwork body, heat preservation nails penetrating through the non-dismantling formwork body are movably connected to one side of the non-dismantling formwork body at equal intervals, and a plastering mortar layer is fixedly connected to one side of the non-dismantling formwork body. One side of the plastering mortar layer is fixedly connected with a reinforcing frame, one side of the reinforcing frame is fixedly connected with a decorative face, one end of the non-dismantling formwork body is fixedly connected with a clamping plate, and the other end of the non-dismantling formwork body is provided with a clamping groove. The clamping plates slide in the clamping grooves, elastic deformation of the elastic pieces is utilized, the elastic pieces are made to be tightly attached to one sides of the clamping plates, then the fastening performance of sliding clamping of the clamping plates and the interiors of the reserved grooves is improved, quick and firm splicing and assembling between the non-dismantling formwork bodies are achieved, follow-up corresponding construction operation is facilitated, and the practicability of the non-dismantling formwork bodies is improved.

A thermoplastic frame for holding acoustical material has extruded square plastic tubing that is inserted or snap-fit onto corner connectors and T-connectors to make an enclosure that houses and compresses the acoustic material. During assembly of the frame, the acoustic material is inserted in the open side of a secondary frame assembly and enclosed and compressed with a cap assembly snap-fit onto the secondary frame assembly.

The invention provides a fabricated building wall and a construction method.The wall comprises a frame keel, a noise reduction keel, a wall core material and an outer wallboard, an annular cavity with openings in the two sides is formed in the frame keel, and the noise reduction keel and the wall core material are located in the annular cavity; openings in the two sides of the annular cavity are blocked by the external wall panel; the cross section of the noise reduction keel comprises at least two Z-shaped structures connected end to end, and the Z-shaped structures are used for dividing the annular cavity into a plurality of noise reduction reflection cavities. The noise reduction keel is optimally designed, and the wall body core material and the vibration reduction strips with the sound absorption effect are additionally arranged, so that the sound insulation performance of the wall body is effectively improved, the sound insulation effect of the wall body is improved without thickening the wall body or increasing the number of external wall panels, and the problems of cost increase, quality reduction and the like caused by the sound insulation effect are avoided; by optimally designing the shapes and structures of the joints of the heaven and earth keels, the side wrapping keels, the vibration reduction keels and the wall body core materials, the installation efficiency, stability and tightness of the wall body are improved.

The invention discloses an assembly type efficient sound insulation cover convenient to install, and relates to the technical field of sound insulation covers. Comprising a plurality of pieces of main body square steel, the main body square steel are linearly and evenly distributed at equal intervals, jacking mechanisms used for improving the bottom supporting strength are arranged on the inner walls of the main body square steel correspondingly, and assembly type connecting mechanisms used for improving the connecting strength and stability are installed in the main body square steel correspondingly; according to the assembly type efficient sound insulation cover convenient to install, main body square steel is inserted and limited in a penetrating and inserting mode through the assembly type connecting mechanism, the defect that limiting performance is insufficient due to the fact that a lap joint mode is directly used in a traditional structure is overcome, the whole assembly process is simpler and more convenient, rubber pads and expansion water stop strips are arranged at splicing joints, and the assembly efficiency is improved. The vibration transmission of equipment can be blocked, the inherent frequency is kept away from the vibration frequency of the equipment, secondary noise caused by resonance is avoided, meanwhile, through gaps are reduced, the noise is prevented from leaking from the insertion hole position, and the problem of noise leakage is solved.

A set of parts intended to form a floor (1) and / or a ceiling of at least one room in a building, which set includes a first set of elements (2) each having a first face (2a) substantially flat and a second face (2b) opposite the first face, which second face has a profile (3) having an angular geometry such that two elements can fit together, which set also includes a second set of acoustic attenuation elements (4, 5-1, 5-2) intended to be placed between two elements of said first set which are fitted together, for each element of the first set the angular geometry of the profile is the same and is present on the whole of the second face, which acoustic attenuation elements have an angular geometry which follows that of the profile and are positioned in a hollow, respectively on a ridge, formed by the profile of the elements of the first layer.

An integral assembly type operating room takes an operating room as a medical unit, an enclosure structure comprising a bottom groove, an outer groove, a main beam, a wall plate, an inclined ceiling hanging groove, a filling plate hanging groove, an air supply ceiling, cleaning equipment and a power distribution system are integrally and modularly designed, and industrial production and standardized installation are achieved. After assembly is completed, the cleaning equipment wrapped by the silencing enclosure is integrally installed in a passageway between the decorative plate and the framework, an air return opening and an air exhaust opening are formed in the framework, and the air return opening and the air exhaust opening are connected with the cleaning equipment and an exhaust fan through composite silencing air pipes correspondingly. By means of the double noise reduction scheme formed by the composite noise reduction air pipe and the noise reduction enclosure structure, noise generated by the cleaning equipment and regeneration noise generated in the air flowing process can be effectively controlled within the standard range. The invention further provides an assembly method of the integral assembly type operating room, through the assembly method, the integral type operating room can be rapidly assembled, the assembly efficiency is improved, and the construction period is greatly shortened.

The invention relates to a sound absorber (1) for a traffic route noise protection wall, wherein the sound absorber (1) comprises at least one plastic foam board (2). According to the invention, a first surface (3) of the plastic foam board (2) has a predeterminable number of sound absorber recesses (4) for predetermination of the absorption behavior with a predeterminable frequency response, wherein each of the sound absorber recesses (4) extends only through part of the thickness (5) of the plastic foam board (2).

The invention relates to the technical field of floor slab concrete, and discloses aerated concrete applied to sound insulation and heat preservation of a floor slab and a preparation method of the aerated concrete aiming at the problems that an existing sound insulation floor slab containing the aerated concrete is poor in structural stability, namely the sound insulation effect and the long-term effect of mechanical properties are poor and the like. Comprising 30-40 parts of fly ash, 25-35 parts of sand, 15-20 parts of ardealite, 10-15 parts of quick lime, 5-8 parts of silicon-aluminum porous microspheres, 3-5 parts of slaked lime, 1-2 parts of Fe3O4-polypropylene fiber and 0.2-0.5 part of aluminum powder. The preparation method of the silicon-aluminum porous microspheres comprises the following steps: mixing a silicon source, an aluminum source and a surfactant, and uniformly stirring to obtain silicon-aluminum homogenate; and adding nano titanium dioxide, carrying out ultrasonic dispersion and freeze drying, transferring into a heating furnace, and heating and calcining to obtain the silicon-aluminum porous microspheres. The supporting and strengthening effects on pores are realized through gas production reaction and the like in the material, so that the structural strength and durability of the aerated concrete are improved.

A partial enclosure for inhibiting sound passing into and out of the partial enclosure includes an absorber-barrier or an absorber-barrier-absorber, each made from sound absorbing material and sound barrier material and arranged to form the partial enclosure. The enclosure also includes an adaptive frequency matched sound-masking system. The absorber-barrier or absorbed-barrier-absorber is positioned to block or inhibit unwanted sound from various positions of a source of the unwanted sound, or motion of the source of the unwanted sound. The adaptive frequency matched sound-masking system includes a sound generating device arranged on or in the partial enclosure to emit anti-noise signal to cancel or inhibit the unwanted sound.

A sound absorbing device according to an exemplary embodiment of the present invention comprises a plurality of sound absorbing cells arranged adjacent to each other on a plane, and each of the plurality of sound absorbing cells includes: a chamber having a volume therein, and in which a plurality of micro holes is perforated on a front surface in which a sound wave is incident; and a neck part introduced and extended to a rear of the front surface and penetrated by a through hole for communicating the outside and the chamber.

The utility model relates to an assembly type damping composite infilled wall with an energy dissipation damping part maintenance device. The energy dissipation damping piece can be sealed, and fire prevention, corrosion prevention, water prevention, heat preservation and sound insulation can be achieved. The composite filled wallboards are installed in the structural frame and connected with the structural frame, the structural frame comprises frame columns and frame beams, and an energy dissipation damping part is connected between the upper composite filled wallboard and the lower composite filled wallboard. A slidable connecting device is installed on the outer side of the energy dissipation damping part and comprises a cover plate, a sliding groove and a sliding rail, the sliding rail is arranged on the inner side of the cover plate, and the sliding rail is embedded in the sliding groove in the inner side of the cover plate and fixedly connected with the embedded steel plate or the embedded steel bar on the lower portion of the upper composite filling wall plate. The slidable connecting device is convenient to mount and dismount, and convenience is provided for overhaul, maintenance and replacement of the energy dissipation damping part; and meanwhile, the fireproof, anti-corrosion, waterproof, heat-insulating and sound-insulating effects can be realized.

The invention provides a light heat preservation partition wall connecting structure of a building aluminum plate curtain wall and an installation method, and relates to the technical field of curtain wall construction.The light heat preservation partition wall connecting structure of the building aluminum plate curtain wall comprises a first vertical supporting rod, a second vertical supporting rod, a first transverse supporting rod, a second transverse supporting rod, a heat preservation inner partition wall and an aluminum panel; the first vertical supporting rod is connected to a wall through the first transverse supporting rod, the second vertical supporting rod is connected to the wall through the second transverse supporting rod, the first vertical supporting rod is arranged on the side, away from the wall, of the second vertical supporting rod, and the aluminum panel is installed on the first vertical supporting rod through a first connecting structure. The heat preservation inner partition wall and the wall face are arranged in parallel in a spaced mode and perpendicularly connected to the first transverse supporting rod and / or the second transverse supporting rod through a second connecting structure. The connecting structure enables the aluminum panel and the thermal insulation inner partition wall to be connected more firmly, can effectively improve the construction quality of the inner partition wall of the building aluminum plate curtain wall project, and is firm in installation and remarkable in economic benefit.

The invention relates to the field of assembly type floor support plates, and particularly discloses an assembly type disassembly-free heat preservation bottom die reinforcement cage floor support plate which comprises a heat preservation bottom die, a plurality of connecting parts used for being connected with prefabricated reinforcement cages are arranged at the top of the heat preservation bottom die, and a heat preservation core layer is arranged in the heat preservation bottom die. A first cavity with adjustable cavity volume and a second cavity communicated with the first cavity are formed in the heat preservation core layer, the first cavity is located above the second cavity, the volume of the second cavity is larger than that of the first cavity, the first cavity and the second cavity form a sound absorption resonance structure, and the sound absorption resonance structure is arrayed in the heat preservation core layer. The bottom formwork integrates the functions of heat preservation, sound insulation, flame retardance and the formwork, the construction procedure of secondary heat preservation and sound insulation and the formwork dismantling procedure are reduced, and the building efficiency is improved.

The invention relates to a novel sound barrier plate, and belongs to the field of buildings and engineering. The formula comprises a bottom layer material formula and a surface layer material formula, wherein the bottom layer material formula comprises the following components in percentage by mass: 38-50% of diatomite; 15-30% of blast furnace slag; 5-12% of calcite; 2-6% of calcined talc; 2-5% of potassium feldspar; 3-8% of kaolin; 5 to 13% of bentonite; 5-10% of quartz; 2-6% of iron oxide red; 0.2%-0.8% of a foaming agent; 0.1 to 0.4 percent of a water reducing agent; the formula of the surface layer material comprises the following components in percentage by mass: 32-55% of perlite micro powder; 15-27% of calcined talc; 17 to 27% of bentonite; 4-10% of kaolin; 0.1-0.3% of a foaming agent; 0.1 to 0.4 percent of a water reducing agent; the preparation method of the sound barrier plate adopts a secondary material distribution forming process. The foamed ceramic composite sound barrier plate is of a double-layer structure and is provided with the sound insulation back plate; and through high-temperature firing, layering and cracking are avoided in use. The bottom-layer material replaces a base plate, so that the process production cost is reduced; the surface of the bottom layer material is flat after foaming and firing, cutting is not needed, and material waste is reduced. According to the invention, blast furnace slag is used as a raw material, which is an effective way for turning blast furnace slag into wealth.

The utility model belongs to the field of curtain wall decoration, and relates to an assembly type telescopic partition wall plugging system between a glass curtain wall and an inner partition wall, which comprises a concrete partition wall, a stand column, and a partition wall plugging system and a plugging clamping system which are arranged between the concrete partition wall and the stand column, the partition wall plugging system comprises two partition wall section bars, and a buckle smoothing mechanism used for stretching and retracting is arranged at the connecting position of the two partition wall section bars. The blocking and clamping system comprises buckle bases fixed to the concrete partition wall and the stand column correspondingly, and the ends, away from the buckle smoothing mechanism, of the two partition wall sectional materials are assembled with the two buckle bases in a clamped mode correspondingly. The energy-saving curtain wall is simple in structure and easy to construct, the cost of later maintenance is greatly saved, the performance of the curtain wall in the aspect of green building energy conservation is ensured to the maximum extent, and the use energy consumption of a building is reduced.

The invention provides a movable sound insulation dustproof construction shed, a plurality of supporting mechanisms are sequentially arranged in a shed body in the X-axis direction, and each supporting mechanism comprises two telescopic rods oppositely arranged in the Y-axis direction, a supporting assembly erected on the two telescopic rods and a walking assembly connected to the lower end of each telescopic rod; each telescopic rod is provided with a first limiting assembly used for limiting a sound insulation plate installed on the telescopic rod, and the supporting assembly comprises a first arc-shaped supporting rod and a second arc-shaped supporting rod which are used for supporting the shed body located at the upper ends of the two telescopic rods and can be oppositely folded. The walking assembly is used for driving each telescopic rod to move or stop, so that the problems that an existing dustproof noise reduction shed lacks comprehensive shielding and sound insulation measures on a device to be shielded, and sound insulation felt cloth is inconvenient to disassemble and assemble, so that the dustproof noise reduction effect and stability of the dustproof noise reduction shed are poor are solved.

The steel bar truss prefabricated part comprises a bottom plate and a plurality of steel bar trusses arranged above the bottom plate, and the steel bar trusses are connected with the bottom plate and distributed at intervals. A plurality of core molds which are distributed at intervals are arranged between the adjacent steel bar trusses; the first plate bottom steel bars are arranged above the bottom plate in parallel and are distributed at intervals, and gaps are formed between the first plate bottom steel bars and the bottom surfaces of the bottom plate and the core mold. The prefabricated part is high in integration degree, light in self-weight, convenient to produce in an automatic factory, small in consumption of reinforcing steel bars and concrete, light in self-weight, good in heat preservation and sound insulation effect, convenient to construct and better in economical efficiency, and a floor slab structure formed after concrete is poured is small in consumption of the reinforcing steel bars and the concrete.

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 discloses an assembly type prefabricated concrete heat preservation and sound insulation floor slab, and relates to the technical field of prefabricated floor slabs. The assembly type prefabricated concrete heat preservation and sound insulation floor slab comprises a prefabricated bottom plate, a heat preservation layer plate is arranged on one surface of the prefabricated bottom plate, first heat preservation and sound insulation plates are arranged on the heat preservation layer plate and arranged in a state with a dead zone, and a non-dead zone of each first heat preservation and sound insulation plate is used for heat preservation and sound insulation; and the panel layer is poured on the side, close to the first heat preservation and sound insulation plate, of the prefabricated bottom plate, and the panel layer can fill the goaf. The face plate layers are in contact with the heat preservation layer plates after being poured, so that the contact area between the layer plates is increased, the contact strength between the layer plates is improved, a layer plate sandwich structure is formed, direct covering type installation of heat preservation plates in the traditional sense is improved through the structure, the connection strength between the structures is improved, and the heat preservation effect is improved. And meanwhile, the heat bridge effect is blocked by utilizing the low heat conductivity of the first heat-insulating and sound-insulating plate, so that the heat-insulating and sound-insulating effects are greatly improved.

The utility model relates to the technical field of solar sound insulation, in particular to a solar sound insulation screen device which comprises an installation box, a forward and reverse rotation motor is fixedly connected in the installation box, a first gear is installed at the output end of the forward and reverse rotation motor, and a half gear is connected to the surface of the first gear in an engaged mode. According to the utility model, by arranging the first baffle plate, the sealing gaskets, the sound absorption plate, the sound insulation plate, the protection plate, the toothed plate and the telescopic cylinder, when the telescopic cylinder controls the toothed plate to move downwards to transmit the second gear, the photovoltaic panel is overturned upwards, and when the photovoltaic panel is in a vertical state, the sealing gaskets are attached to each other, so that the photovoltaic panel is prevented from being hit by rainy seasons or hails, and the service life of the photovoltaic panel is prolonged. Meanwhile, under the action of the protection plate, the surface of the photovoltaic panel is effectively protected, the situation that external objects collide with the photovoltaic panel, the photovoltaic panel is damaged and use is affected is avoided, and meanwhile under the action of the sound absorption plate and the sound insulation plate, the sound insulation effect on the photovoltaic panel is effectively achieved.

The invention discloses a polyester fiber acoustical board with high yield strength. The polyester fiber acoustical board comprises a micro-perforated metal surface layer, a gradient density polyester fiber layer, a honeycomb metal framework layer and an elastic damping bottom layer which are sequentially stacked and fixed through mucilage glue from top to bottom. A vertically-distributed metal surrounding plate is arranged around the side edge of the micro-perforated metal surface layer, the metal surrounding plate and the micro-perforated metal surface layer are of an integrally-formed structure, and the gradient density polyester fiber layer and the honeycomb metal framework layer are wrapped by the metal surrounding plate. And the honeycomb metal framework layer is fixed with the adjacent upper and lower layers through mucilage glue, and is also fixed with the metal coaming through rivets. By means of the innovative composite lamination design, the strength defect of a traditional polyester fiber acoustic board is effectively overcome. The micro-perforated metal surface layer and the integrally formed metal coaming form a rigid outer frame, so that the internal fiber layer is protected from mechanical damage, and the overall flexural rigidity is remarkably improved through the bearing effect of the metal framework.